JP6062992B2 - Uniaxial shearing crusher, fixed blade, and rotary blade support holder - Google Patents

Uniaxial shearing crusher, fixed blade, and rotary blade support holder Download PDF

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JP6062992B2
JP6062992B2 JP2015077023A JP2015077023A JP6062992B2 JP 6062992 B2 JP6062992 B2 JP 6062992B2 JP 2015077023 A JP2015077023 A JP 2015077023A JP 2015077023 A JP2015077023 A JP 2015077023A JP 6062992 B2 JP6062992 B2 JP 6062992B2
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blade
rotary
rotary blade
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fixed blade
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JP2015127059A (en
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裕樹 本田
裕樹 本田
正直 足立
正直 足立
実 小野
実 小野
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Resonac Holdings Corp
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Showa Denko KK
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Description

本発明は、例えば都市ごみ、産業廃棄物等の被破砕物を破砕する一軸剪断式破砕機、並びに一軸剪断式破砕機に用いられる固定刃及び回転刃支持ホルダに関する。 The present invention relates to a uniaxial shearing crusher that crushes objects to be crushed, such as municipal waste and industrial waste, and a fixed blade and a rotary blade support holder used in the uniaxial shearing crusher .

従来、都市ごみ、産業廃棄物等の被破砕物を破砕する一軸剪断式破砕機として、例えば、図２２乃至図２８に示すもの（特許文献１参照）が知られている。図２２は、従来例の一軸剪断式破砕機の断面図である。図２３は、図２２に示す一軸剪断式破砕機における回転刃と固定刃の協働関係を説明するもので、（Ａ）は回転刃の刃部の刃先が固定刃のすくい面上にきたときの状態の断面模式図、（Ｂ）は（Ａ）における矢印２３Ｂで示す部分の拡大図である。図２４は、図２２に示す一軸剪断式破砕機における回転刃と固定刃の協働関係を説明するもので、（Ａ）は回転刃の刃部の刃元が固定刃のすくい面上にきたときの状態の断面模式図、（Ｂ）は（Ａ）の状態から回転刃の回転が進行した状態の断面模式図である。図２５は、図２４（Ａ）における矢印２５−２５から見た模式図である。図２６は、図２２に示す一軸剪断式破砕機に用いられる回転体の部分正面図である。図２７は、図２２に示す一軸剪断式破砕機に用いられる回転刃組立体の分解斜視図である。図２８は、図２２に示す一軸剪断式破砕機に用いられる固定刃組立体の部分平面図である。 図２２に示す一軸剪断式破砕機１０１は、被破砕物Ｗを破砕するものであって、内部に破砕室１０３を形成した破砕機体１０２を備えている。破砕機体１０２の破砕室１０３内には、回転軸１０４が回転可能に設けられている。回転軸１０４の外周には、回転軸１０４とともに回転可能な回転体１０５が設けられている。   2. Description of the Related Art Conventionally, as a uniaxial shearing type crusher that crushes objects to be crushed, such as municipal waste and industrial waste, for example, the one shown in FIGS. FIG. 22 is a cross-sectional view of a conventional uniaxial shear crusher. FIG. 23 explains the cooperative relationship between the rotary blade and the fixed blade in the uniaxial shearing crusher shown in FIG. 22, and (A) shows when the blade tip of the rotary blade comes on the rake face of the fixed blade. (B) is an enlarged view of a portion indicated by an arrow 23B in (A). FIG. 24 explains the cooperative relationship between the rotary blade and the fixed blade in the uniaxial shearing crusher shown in FIG. 22, and (A) shows the blade base of the rotary blade on the rake face of the fixed blade. (B) is a cross-sectional schematic diagram of the state which rotation of the rotary blade advanced from the state of (A). FIG. 25 is a schematic view seen from the arrow 25-25 in FIG. FIG. 26 is a partial front view of a rotating body used in the uniaxial shearing crusher shown in FIG. 27 is an exploded perspective view of a rotary blade assembly used in the uniaxial shearing crusher shown in FIG. FIG. 28 is a partial plan view of a fixed blade assembly used in the uniaxial shearing crusher shown in FIG. A uniaxial shearing crusher 101 shown in FIG. 22 crushes the object to be crushed W and includes a crusher body 102 in which a crushing chamber 103 is formed. A rotating shaft 104 is rotatably provided in the crushing chamber 103 of the crusher body 102. A rotating body 105 that can rotate together with the rotating shaft 104 is provided on the outer periphery of the rotating shaft 104.

この回転体１０５の外周には、図２２及び図２６に示すように、複数の回転刃組立体１０６が取り付けられている。各回転刃組立体１０６は、後述する固定刃組立体１１０の固定刃１１１と協働して被破砕物Ｗを破砕する回転刃１０７と、回転刃１０７を支持する回転刃支持ホルダ１０８とを備えている。回転体１０５の外周面には、図２６に示すように、円周方向に延びる複数個の弧状溝１０５ａが軸方向に沿って並列に形成されている。各弧状溝１０５ａには、回転刃組立体１０６を取付けるための取付溝１０５ｂが設けられている。取付溝１０５ｂは、円周方向に沿って所定ピッチで複数個形成され、軸方向に沿って隣り合う取付溝１０５ｂの位相が少しずつずれるように形成されている。このため、取付溝１０５ｂに取り付けられた回転刃組立体１０６の回転刃１０７は、円周方向に沿って所定ピッチで複数個配置されるとともに、軸方向に沿って隣り合う回転刃１０７の位相が少しずつずれるように配置される。   A plurality of rotary blade assemblies 106 are attached to the outer periphery of the rotary body 105 as shown in FIGS. Each rotary blade assembly 106 includes a rotary blade 107 that crushes the object W to be crushed in cooperation with a fixed blade 111 of a fixed blade assembly 110 described later, and a rotary blade support holder 108 that supports the rotary blade 107. ing. As shown in FIG. 26, a plurality of arc-shaped grooves 105a extending in the circumferential direction are formed in parallel on the outer peripheral surface of the rotating body 105 along the axial direction. Each arcuate groove 105 a is provided with a mounting groove 105 b for mounting the rotary blade assembly 106. A plurality of mounting grooves 105b are formed at a predetermined pitch along the circumferential direction, and are formed such that the phases of the mounting grooves 105b adjacent to each other along the axial direction are slightly shifted. Therefore, a plurality of rotary blades 107 of the rotary blade assembly 106 attached to the attachment groove 105b are arranged at a predetermined pitch along the circumferential direction, and the phases of the adjacent rotary blades 107 along the axial direction are the same. It is arranged so that it is shifted little by little.

回転刃１０７は、図２７に示すように、正方形断面の角柱状に形成され、その表面の四個の稜線のうちの略Ｖ字状をなして隣り合う二つの稜線及び残りの略Ｖ字状をなして隣り合う二つの稜線をそれぞれ刃部１０７ａとしている。回転刃１０７は、刃部１０７ａの摩耗状況を見て裏返して用い、その裏面の四個の稜線のうちの略Ｖ字状をなして隣り合う二つの稜線及び残りの略Ｖ字状をなして隣り合う二つの稜線もそれぞれ刃部１０７ａとしている。   As shown in FIG. 27, the rotary blade 107 is formed in a square column shape having a square cross section, and has two ridge lines adjacent to each other in the form of a substantially V-shape among the four ridge lines on the surface, and the remaining substantially V-shape. Two ridge lines adjacent to each other are defined as blade portions 107a. The rotary blade 107 is used by turning over in view of the state of wear of the blade portion 107a, and is formed in a substantially V-shape among the four ridge lines on the back surface thereof and the adjacent two ridge lines and the remaining substantially V-shape. Two adjacent ridge lines are also defined as blade portions 107a.

回転刃支持ホルダ１０８は、図２７に示すように、角ブロック状のホルダ本体１０８ａを備えている。ホルダ本体１０８ａの前面側には、回転刃１０７を収容する回転刃収容凹部１０８ｂが形成されている。回転刃収容凹部１０８ｂは、図２７に示すように、ホルダ本体１０８ａの幅方向の中央部において上側に開いた互いになす角度が９０度のＶ字状凹部に形成されている。回転刃支持ホルダ１０８の回転刃収容凹部１０８ｂには、図２７に示すように、回転刃１０７がその表面１０７ｂ側を前面側にして収容され。回転刃１０７は取付ボルト１０７ｄにより取付孔１０８ｃ及びねじ孔１０７ｃを介して回転刃支持ホルダ１０８に取り付けられる。回転刃ホルダ組立体１０６は、回転体１０５の取付溝１０５ｂに回転刃１０７を前側にして取付ボルト１０７ｅにより取り付けられる。   As shown in FIG. 27, the rotary blade support holder 108 includes a square block-shaped holder body 108a. A rotary blade housing recess 108b for housing the rotary blade 107 is formed on the front surface side of the holder main body 108a. As shown in FIG. 27, the rotary blade accommodating recess 108b is formed as a V-shaped recess having an angle of 90 degrees and opened upward at the center in the width direction of the holder body 108a. As shown in FIG. 27, the rotary blade 107 is accommodated in the rotary blade housing recess 108b of the rotary blade support holder 108 with the surface 107b side of the rotary blade support holder 108 as the front surface side. The rotary blade 107 is attached to the rotary blade support holder 108 through the attachment hole 108c and the screw hole 107c by the attachment bolt 107d. The rotary blade holder assembly 106 is attached to the mounting groove 105b of the rotator 105 with the mounting blade 107e with the rotary blade 107 on the front side.

また、破砕機体１０２の破砕室１０３内には、図２２に示すように、固定刃組立体１１０が設けられている。固定刃組立体１１０は、回転刃１０７と協働して被破砕物Ｗを破砕する複数の固定刃１１１と、固定刃１１１を取り付けた取付座体１１２とを備えている。
複数の固定刃１１１は、図２８に示すように、並列方向（図２８における左右方向）に並べられて取付座体１１２に取り付けられる。各固定刃１１１は、略矩形状板で構成され、回転刃１０７の刃部１０７ａに対向する略Ｖ字状をなして隣り合う二つの稜線からなる複数の刃部１１１ａを備えている。略Ｖ字状をなす固定刃１１１の刃部１１１ａは、取付座体１１２の一端縁（図２８における下端縁）に並列に複数並べて形成されている。 Further, as shown in FIG. 22, a fixed blade assembly 110 is provided in the crushing chamber 103 of the crusher body 102. The fixed blade assembly 110 includes a plurality of fixed blades 111 for crushing the object to be crushed W in cooperation with the rotary blade 107 and an attachment seat body 112 to which the fixed blades 111 are attached.
As shown in FIG. 28, the plurality of fixed blades 111 are arranged in the parallel direction (the left-right direction in FIG. 28) and attached to the mounting seat 112. Each fixed blade 111 is formed of a substantially rectangular plate, and includes a plurality of blade portions 111 a formed of two ridge lines adjacent to each other in a substantially V shape facing the blade portion 107 a of the rotary blade 107. A plurality of blade portions 111 a of the fixed blade 111 having a substantially V shape are formed side by side in parallel with one end edge (lower end edge in FIG. 28) of the mounting seat 112.

各刃部１１１ａは、図２３（Ａ）及び図２８に示すように、固定刃１１１の表面（図２３（Ａ）において上側の面）と裏面との双方に形成されている。被破砕物Ｗの破砕に際しては、図２３（Ａ），（Ｂ）に示すように、表面側の刃部１１１ａを用いるが、刃部１１１ａの摩耗状況を見て裏返して用い、その場合、裏面側に形成されている刃部１１１ａを用いる。   As shown in FIGS. 23A and 28, each blade portion 111a is formed on both the front surface (the upper surface in FIG. 23A) and the back surface of the fixed blade 111. When crushing the object W to be crushed, as shown in FIGS. 23 (A) and 23 (B), the blade 111a on the front surface side is used. The blade portion 111a formed on the side is used.

取付座体１１２は、図２８に示すように、表面側に固定刃１１１を取り付けるための取付凹部１１２ａを備えている。固定刃１１１は、刃部１１１ａが取付座体１１２から突出するように取付凹部１１２ａに取り付けられる。固定刃１１１の取付けに際しては、調節ボルト１１４及びナット１１５により刃部１１１ａの突出量を調節しておいてから、固定刃１１１に形成された長孔１１１ｅを介して取付けボルト１１３により固定刃１１１を着脱自在に取付座体１１２に取付固定する。そして、図２３（Ａ）に示すように、固定刃１１１の刃部１１１ａが回転体１０５の方に向くようにして取付座体１１２が破砕機体１０２に取り付けられ、これにより固定刃組立体１１０が破砕機体１０２に取り付けられる。   As shown in FIG. 28, the mounting seat 112 includes a mounting recess 112a for mounting the fixed blade 111 on the front surface side. The fixed blade 111 is attached to the attachment recess 112a so that the blade portion 111a protrudes from the attachment seat body 112. When attaching the fixed blade 111, the protruding amount of the blade portion 111 a is adjusted by the adjusting bolt 114 and the nut 115, and then the fixed blade 111 is attached by the mounting bolt 113 through the long hole 111 e formed in the fixed blade 111. It is fixed to the mounting seat 112 so as to be detachable. Then, as shown in FIG. 23A, the mounting seat 112 is attached to the crusher body 102 so that the blade portion 111a of the fixed blade 111 faces the rotating body 105, whereby the fixed blade assembly 110 is It is attached to the crusher body 102.

ここで、固定刃組立体１１０は、図２２に示すように、固定刃１１１の表面としてのすくい面１１１ｂが水平軸線Ｌに対して回転軸１０４に向かって前下がり状に角度α分傾斜配置されている。また、固定刃組立体１１０は、固定刃１１１のすくい面１１１ｂが回転軸１０４の中心軸Ｏに対して距離Ｅ分ずらして配置されている。これにより、図２３（Ａ）に示すように、回転刃１０７の回転方向前面であるすくい面と固定刃１１１の表面であるすくい面１１１ｂとが剪断開始時において剪断角度θとなるように配置されている。   Here, in the fixed blade assembly 110, as shown in FIG. 22, the rake face 111b as the surface of the fixed blade 111 is inclined with respect to the horizontal axis L so as to be lowered forward toward the rotation axis 104 by an angle α. ing. Further, the fixed blade assembly 110 is arranged such that the rake face 111 b of the fixed blade 111 is shifted from the central axis O of the rotation shaft 104 by a distance E. As a result, as shown in FIG. 23A, the rake face that is the front surface of the rotary blade 107 in the rotational direction and the rake face 111b that is the surface of the fixed blade 111 are arranged at a shear angle θ at the start of shearing. ing.

被破砕物Ｗの破砕に際し、回転刃１０７の刃部１０７ａは、回転軸１０４の中心軸Ｏを中心に円運動をし、刃部１０７ａの刃先１０７ａａの回転軌跡は、図２３（Ａ）に示すように、Ｃとなる。一方、固定刃１１１の各刃部１１１ａは、Ｖ字状の隣り合う稜線が凹曲線状となる形状に形成されている。そして、図２３（Ａ）に示すように、回転刃１０７の刃部１０７ａの刃先１０７ａａが固定刃１１０のすくい面１１１ｂ上にきたときに、図２３（Ｂ）に示すように、回転刃１０７の刃部１０７ａの刃先１０７ａａと固定刃１１１の刃部１１１ａと隙間がΔ１となるように固定刃１１１の刃部１１１ａが形成されている。そして、固定刃１１１の刃部１１１ａを含む逃げ面１１１ｄは、刃部１０７ａの回転軌跡面と可及的に近接する近接面に形成されている。   When crushing the object to be crushed W, the blade portion 107a of the rotary blade 107 moves circularly about the central axis O of the rotary shaft 104, and the rotation locus of the blade edge 107aa of the blade portion 107a is shown in FIG. Thus, C is obtained. On the other hand, each blade part 111a of the fixed blade 111 is formed in a shape in which adjacent V-shaped ridgelines are concave. As shown in FIG. 23A, when the blade edge 107aa of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110, as shown in FIG. The blade portion 111a of the fixed blade 111 is formed so that the gap between the blade edge 107aa of the blade portion 107a and the blade portion 111a of the fixed blade 111 is Δ1. And the flank 111d including the blade part 111a of the fixed blade 111 is formed on a close surface as close as possible to the rotation locus surface of the blade part 107a.

そして、破砕機体１０２の回転体１０５の下方位置には、図２２に示すように、複数の排出孔１０９ａを有するスクリーン板１０９が設置されている。
このように構成された一軸剪断式破砕機１０１において、図２２に示すように、被破砕物Ｗが破砕室１０３内に投入される。一方、回転体１０５に取り付けられた回転刃１０７は回転している。投入された被破砕物Ｗは、回転する回転刃１０７の刃部１０７ａに引っ掛けられて固定刃１１０の刃部１１０ａのところに至る。そして、回転刃１０７の刃部１０７ａの回転が続行すると、回転刃１０７の刃部１０７ａと固定刃１１１の刃部１１１ａを含む逃げ面１１１ｄとの隙間において、被破砕物Ｗは、回転する回転刃１０７の刃部１０７ａに引きずられる。回転刃１０７の固定刃１１１に対する相対移動による被破砕物Ｗに対する剪断力と、前記隙間において被破砕物Ｗを引きずる被破砕物Ｗに対する引張力との相乗効果により、被破砕物Ｗは破砕される。そして、破砕された被破砕物Ｗは下方にあるスクリーン板１０９の排出孔１０９ａから外部に排出されるのである。 And the screen board 109 which has the some discharge hole 109a is installed in the downward position of the rotary body 105 of the crushing machine body 102, as shown in FIG.
In the uniaxial shearing type crusher 101 configured as described above, the object to be crushed W is put into the crushing chamber 103 as shown in FIG. On the other hand, the rotary blade 107 attached to the rotary body 105 is rotating. The charged material W to be crushed is hooked on the blade portion 107 a of the rotating rotary blade 107 and reaches the blade portion 110 a of the fixed blade 110. And if rotation of the blade part 107a of the rotary blade 107 continues, the to-be-crushed object W will rotate in the clearance between the blade part 107a of the rotary blade 107 and the flank 111d including the blade part 111a of the fixed blade 111. It is dragged to 107 blade part 107a. The to-be-crushed object W is crushed by the synergistic effect of the shearing force on the to-be-crushed object W by the relative movement of the rotary blade 107 with respect to the fixed blade 111 and the tensile force to the to-be-crushed object W that drags the to-be-crushed object W in the gap. . Then, the crushed object W is discharged to the outside from the discharge hole 109a of the screen plate 109 below.

特許第４１６４８１１号公報Japanese Patent No. 4164811

しかしながら、図２２乃至図２８に示した従来の一軸剪断式破砕機１０１にあっては、以下の問題点があった。
即ち、図２３（Ａ），（Ｂ）に示すように、回転刃１０７の刃部１０７ａの刃先１０７ａａが固定刃１１０のすくい面１１１ｂ上にきたときに、回転刃１０７の刃部１０７ａの刃先１０７ａａと固定刃１１１の刃部１１１ａを含む逃げ面１１１ｄとの隙間はΔ１と小さくなっている。 However, the conventional uniaxial shear crusher 101 shown in FIGS. 22 to 28 has the following problems.
That is, as shown in FIGS. 23A and 23B, when the blade edge 107aa of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110, the blade edge 107aa of the blade portion 107a of the rotary blade 107. And the clearance surface 111d including the blade portion 111a of the fixed blade 111 is as small as Δ1.

また、回転刃１０７の回転が続行し、図２４（Ａ）に示すように、回転刃１０７の刃部１０７ａの刃元１０７ａｂが固定刃１１０のすくい面１１１ｂ上にくる。このときには、図２５に示すように、回転刃１０７の刃部１０７ａの刃先１０７ａａと固定刃１１１の刃部１１１ａを含む逃げ面１１１ｄとの隙間はΔ１となっている。また、回転刃１０７の刃部１０７ａの刃元１０７ａｂと固定刃１１１の刃部１１１ａを含む逃げ面１１１ｄとの隙間はΔ２である。   Further, the rotation of the rotary blade 107 continues, and the blade base 107ab of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110 as shown in FIG. At this time, as shown in FIG. 25, the gap between the blade edge 107aa of the blade portion 107a of the rotary blade 107 and the flank 111d including the blade portion 111a of the fixed blade 111 is Δ1. Further, the gap between the blade base 107ab of the blade portion 107a of the rotary blade 107 and the flank 111d including the blade portion 111a of the fixed blade 111 is Δ2.

一方、回転刃１０７の刃部１０７ａの刃元１０７ａｂが固定刃１１０のすくい面１１１ｂ上にきたときには、図２５に示すように、回転刃支持ホルダ１０８の肩部１０８ｃと、回転刃１０７の刃部１０７ａと対向する固定刃１１１の刃部１１１ａに隣接する刃部１１１ａを含む逃げ面１１１ｄとの間には、Δ１やΔ２と比較してとても大きな隙間Ａが存在する。
このような大きな隙間Ａが、回転刃ホルダ１０８の肩部１０８ｃと、回転刃１０７の刃部１０７ａと対向する固定刃１１１の刃部１１１ａに隣接する刃部１１１ａを含む逃げ面１１１ｄとの間に存在すると、次の問題が生じることになる。 On the other hand, when the blade base 107ab of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110, the shoulder portion 108c of the rotary blade support holder 108 and the blade portion of the rotary blade 107 as shown in FIG. There is a very large gap A between Δ1 and Δ2 between the flank 111d including the blade portion 111a adjacent to the blade portion 111a of the fixed blade 111 facing 107a.
Such a large gap A is formed between the shoulder 108c of the rotary blade holder 108 and the flank 111d including the blade 111a adjacent to the blade 111a of the fixed blade 111 facing the blade 107a of the rotary blade 107. If present, the following problems will arise.

即ち、回転刃１０７が回転して固定刃１１１と協働して被破砕物Ｗを破砕している際に、被破砕物Ｗが、当該隙間Ａからすり抜け、破砕されずにスクリーン板１０９上に落下することがあった。このように、破砕されずにスクリーン板１０９上に落下した被破砕物Ｗは、再度、破砕機によって破砕する必要があり、破砕効率が極めて悪かった。特に、回転刃支持ホルダ１０８の材質は、加工を容易にするために比較的軟質の炭素鋼等が用いられている。このため、破砕を長期にわたり繰り返すと、回転刃ホルダ１０８の肩部１０８ｃが摩耗し、ますます当該隙間Ａが大きくなってしまう傾向にある。隙間Ａが大きくなると、被破砕物Ｗのすり抜け量が多くなり、ますます破砕効率が悪くなってしまうという問題点があった。   That is, when the rotary blade 107 rotates and collides with the fixed blade 111 to crush the object to be crushed, the object to be crushed W passes through the gap A and is not crushed on the screen plate 109. There was a fall. Thus, the to-be-crushed object W which fell on the screen board 109 without being crushed had to be crushed again by a crusher, and the crushing efficiency was extremely poor. In particular, as the material of the rotary blade support holder 108, relatively soft carbon steel or the like is used in order to facilitate processing. For this reason, if crushing is repeated over a long period of time, the shoulder 108c of the rotary blade holder 108 is worn, and the gap A tends to become larger. When the gap A becomes large, there is a problem that the amount of slipping of the object to be crushed W increases and the crushing efficiency becomes worse.

また、図２２、図２３（Ａ）及び図２４（Ａ）に示すように、固定刃１１１の刃部１１１ａの先端は、固定刃１１１の板厚方向に沿う平坦面１１１ｃで形成されている。
前述したように、回転刃１０７の刃部１０７ａの刃元１０７ａｂが固定刃１１０のすくい面１１１ｂ上にきたときには、図２５に示すように、回転刃１０７の刃部１０７ａの刃元１０７ａｂと固定刃１１１の刃部１１１ａを含む逃げ面１１１ｄとの隙間はΔ２となっている。このとき、回転刃１０７の刃部１０７ａの刃元１０７ａｂと固定刃１１１の刃部１１１ａを含む逃げ面１１１ｄとの隙間と、回転刃１０７の刃部１０７ａの刃元１０７ａｂと固定刃１１１の刃部１１１ａの平坦面１１１ｃとの間の隙間とは、同等で、当該回転刃１０７の刃部１０７ａの刃元１０７ａｂと固定刃１１１の刃部１１１ａの平坦面１１１ｃとの間の隙間は、比較的小さくΔ２となっている。 As shown in FIGS. 22, 23 (A) and 24 (A), the tip of the blade portion 111 a of the fixed blade 111 is formed by a flat surface 111 c along the plate thickness direction of the fixed blade 111.
As described above, when the blade base 107ab of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110, as shown in FIG. 25, the blade base 107ab of the blade portion 107a of the rotary blade 107 and the fixed blade The clearance from the flank 111d including the 111 blade portion 111a is Δ2. At this time, the clearance between the blade base 107ab of the blade portion 107a of the rotary blade 107 and the flank 111d including the blade portion 111a of the fixed blade 111, the blade base 107ab of the blade portion 107a of the rotary blade 107, and the blade portion of the fixed blade 111. The gap between the flat surface 111c of 111a is the same, and the gap between the blade base 107ab of the blade portion 107a of the rotary blade 107 and the flat surface 111c of the blade portion 111a of the fixed blade 111 is relatively small. Δ2.

しかし、図２４（Ｂ）に示すように、回転刃１０７がさらに回転し回転刃１０７の刃部１０７ａが固定刃１１１の平坦面１１１ｃの中央部に交差する位置にくると、当該回転刃１０７の刃部１０７ａの刃元１０７ａｂと固定刃１１１の刃部１１１ａの平坦面１１１ｃとの間の隙間（回転刃１０７の刃部１０７ａに沿う長さ）は、図２４（Ｂ）に示すように、Δ２からΔ３に広がってしまう。この回転刃１０７の刃部１０７ａの刃元１０７ａｂと固定刃１１１の刃部１１１ａの平坦面１１１ｃとの間の隙間は、回転刃１０７の回転が続行するとさらに大きくなる。この理由は、固定刃１１１の刃部１１１ａの先端が平坦面で形成されているからである。   However, as shown in FIG. 24B, when the rotary blade 107 further rotates and the blade portion 107a of the rotary blade 107 comes to a position intersecting the central portion of the flat surface 111c of the fixed blade 111, the rotary blade 107 As shown in FIG. 24B, the gap between the blade base 107ab of the blade 107a and the flat surface 111c of the blade 111a of the fixed blade 111 (the length along the blade 107a of the rotary blade 107) is Δ2. To Δ3. The clearance between the blade base 107ab of the blade portion 107a of the rotary blade 107 and the flat surface 111c of the blade portion 111a of the fixed blade 111 further increases as the rotation of the rotary blade 107 continues. This is because the tip of the blade portion 111a of the fixed blade 111 is formed as a flat surface.

回転刃１０７が固定刃１１１を通過するまで、当該回転刃１０７の刃部１０７ａの刃元１０７ａｂと固定刃１１１の刃部１１１ａの平坦面１１１ｃとの間の隙間が小さいままなら問題はないが、当該隙間が大きくなると、回転刃１０７が回転して固定刃１１１と協働して被破砕物Ｗを破砕している際に、被破砕物Ｗが、当該隙間からすり抜け、破砕されずにスクリーン板１０９上に落下することがあった。
従って、本発明はこれら従来の課題を解決するためになされたものであり、その目的は、回転刃と固定刃とが協働して被破砕物を破砕する際に、被破砕物の破砕効率を向上させた一軸剪断式破砕機、固定刃、及び回転刃支持ホルダを提供することにある。 Until the rotary blade 107 passes through the fixed blade 111, there is no problem if the gap between the blade base 107ab of the blade portion 107a of the rotary blade 107 and the flat surface 111c of the blade portion 111a of the fixed blade 111 remains small. When the gap becomes larger, the rotary blade 107 rotates and cooperates with the fixed blade 111 to crush the object to be crushed W, and the object to be crushed passes through the gap and is not crushed. 109 could fall.
Accordingly, the present invention has been made to solve these conventional problems, and its purpose is to crush the object to be crushed when the rotating blade and the fixed blade cooperate to crush the object to be crushed. An object of the present invention is to provide a uniaxial shearing type crusher , a fixed blade, and a rotary blade support holder that are improved.

上記課題を解決するため、本発明のある態様に係る一軸剪断式破砕機は、内部に破砕室を形成した破砕機体と、前記破砕室内に回転可能に設けられた回転軸と、該回転軸の外周に前記回転軸とともに回転可能に設けられた回転体と、該回転体の外周に取り付けられた回転刃組立体と、前記破砕室内に設けられた固定刃とを備え、前記回転刃組立体が、前記固定刃と協働して被破砕物を破砕する回転刃と、該回転刃を支持する回転刃支持ホルダとを備え、前記回転刃の刃部が略Ｖ字状をなして隣り合う二つの直線状の稜線からなり、前記固定刃の刃部が前記回転刃の刃部としての二つの直線状の稜線に対向する略Ｖ字状をなして隣り合う二つの稜線からなると共に、前記固定刃の刃部を並列に複数並べて形成した一軸剪断式破砕機であって、前記回転刃の刃部と対向する前記固定刃の刃部の先端に先鋭部を設け、該先鋭部を、前記回転刃の刃部の刃元との間の隙間を、前記回転刃の回転方向に沿って一定間隔に保持するように形成したことを特徴としている。
この態様に係る一軸剪断式破砕機において、「一定間隔に保持する」とは、回転刃の回転の進行によって当該隙間がなるべく拡大しないように、当該隙間の拡大見込み分を設計上無理のない程度で回転に沿った形状で補充することを意味し、隙間の寸法が厳密に一定であるか一定でないかを問わない。
また、この一軸剪断式破砕機において、前記固定刃は、各々の前記刃部から前記固定刃の板厚方向中央に向かって延びる逃げ面を備え、前記先鋭部は、回転軸側で交わる一対の前記逃げ面の交線に形成され、前記先鋭部は、前記回転刃の刃元の回転軌跡から一定の間隔となるようにしてもよい。
また、この一軸剪断式破砕機において、前記逃げ面は、前記回転刃の対応する刃部との間の隙間を前記回転刃の回転方向に沿って一定間隔に形成されてもよい。
また、この一軸剪断式破砕機において、前記回転刃の刃部の刃元側に位置する前記回転刃支持ホルダの肩部に突起部を設けてもよい。
また、この一軸剪断式破砕機において、前記回転刃は、前記回転体の円周方向に沿って複数個配置されてもよい。
さらに、上記課題を解決するため、本発明のある態様に係る固定刃は、内部に破砕室を形成した破砕機体と、前記破砕室内に回転可能に設けられた回転軸と、該回転軸の外周に前記回転軸とともに回転可能に設けられた回転体と、該回転体の外周に取り付けられた回転刃組立体と、前記破砕室内に設けられた固定刃とを備え、前記回転刃組立体が、前記固定刃と協働して被破砕物を破砕する回転刃と、該回転刃を支持する回転刃支持ホルダとを備え、前記回転刃の刃部が略Ｖ字状をなして隣り合う二つの直線状の稜線からなる一軸剪断式破砕機のための固定刃であって、前記固定刃は、前記回転刃の刃部としての二つの直線状の稜線に対向する略Ｖ字状をなして隣り合う二つの稜線からなる刃部と、 前記回転刃の刃部と対向する前記固定刃の刃部の先端に先鋭部とを備え、該先鋭部と前記回転刃の刃部の刃元との間の隙間が、前記回転刃の回転方向に沿って一定間隔に保持されるように前記粉砕室内に固定されることを特徴としている。
また、この固定刃において、前記固定刃の刃部から前記固定刃の板厚方向中央に向かって延びる逃げ面を備え、前記先鋭部は、回転軸側で交わる一対の前記逃げ面の交線に形成され、前記一軸剪断式破砕機に取り付けられた場合に、前記先鋭部は、前記回転刃の刃元の回転軌跡から一定の間隔となるようにしてもよい。
また、この固定刃において、前記一軸剪断式破砕機に取り付けられた場合に、前記逃げ面は、前記回転刃の対応する刃部との間の隙間を前記回転刃の回転方向に沿って一定間隔に形成されてもよい。
加えて、上記課題を解決するため、本発明のある態様に係る回転刃支持ホルダは、内部に破砕室を形成した破砕機体と、前記破砕室内に回転可能に設けられた回転軸と、該回転軸の外周に前記回転軸とともに回転可能に設けられた回転体と、該回転体の外周に取り付けられた回転刃組立体と、前記破砕室内に設けられた固定刃とを備え、前記回転刃組立体が、前記固定刃と協働して被破砕物を破砕する回転刃と、該回転刃を支持する回転刃支持ホルダとを備え、前記回転刃の刃部が略Ｖ字状をなして隣り合う二つの直線状の稜線からなり、前記固定刃の刃部が前記回転刃の刃部としての二つの直線状の稜線に対向する略Ｖ字状をなして隣り合う二つの稜線からなると共に、前記固定刃の刃部を並列に複数並べて形成した一軸剪断式破砕機のための回転刃支持ホルダであって、前記回転刃の刃部と対向する前記固定刃の刃部の先端に先鋭部を設け、該先鋭部を、前記回転刃の刃部の刃元との間の隙間を、前記回転刃の回転方向に沿って一定間隔に保持するように形成され、前記回転刃支持ホルダは、前記回転刃の刃部の刃元側に位置する肩部に突起部を備えたことを特徴としている。
In order to solve the above problems, a uniaxial shearing type crusher according to an aspect of the present invention includes a crusher body in which a crushing chamber is formed, a rotating shaft rotatably provided in the crushing chamber, A rotary body provided on the outer periphery of the rotary body so as to be rotatable together with the rotary shaft; a rotary blade assembly attached to the outer periphery of the rotary body; and a fixed blade provided in the crushing chamber. A rotary blade that crushes the object to be crushed in cooperation with the fixed blade, and a rotary blade support holder that supports the rotary blade, and the blade portions of the rotary blade are adjacent to each other in a substantially V shape. It consists of two straight ridgelines, and the blade portion of the fixed blade is composed of two ridgelines adjacent to each other in a substantially V shape facing two linear ridgelines as blade portions of the rotary blade, and the fixed blade A uniaxial shear type crusher formed by arranging a plurality of blade parts in parallel, A sharpened portion is provided at the tip of the blade portion of the fixed blade facing the blade portion of the rotary blade, and the sharpened portion is spaced from the blade base of the blade portion of the rotary blade in the rotation direction of the rotary blade. It is characterized by being formed so as to be held at a constant interval along.
In the uniaxial shearing type crusher according to this aspect, “holding at a constant interval” means that the expected expansion of the gap is as easy as possible to prevent the gap from expanding as much as possible by the progress of rotation of the rotary blade. It means to replenish with a shape along the rotation, and it does not matter whether the size of the gap is strictly constant or not constant.
Further, in this uniaxial shearing type crusher, the fixed blade includes a flank surface extending from each of the blade portions toward the center in the plate thickness direction of the fixed blade, and the sharpened portion intersects with a pair of rotating shafts. It may be formed at a line of intersection of the flank surfaces, and the sharpened portion may be at a constant interval from the rotation trajectory of the blade base of the rotary blade.
In the uniaxial shearing type crusher, the clearance surface may be formed at a constant interval along a rotation direction of the rotary blade with a clearance between the rotary blade and a corresponding blade portion of the rotary blade.
In the uniaxial shearing crusher, a protrusion may be provided on the shoulder of the rotary blade support holder located on the blade base side of the blade portion of the rotary blade.
In the uniaxial shear crusher, a plurality of the rotary blades may be arranged along a circumferential direction of the rotating body.
Furthermore, in order to solve the above-described problems, a fixed blade according to an aspect of the present invention includes a crusher body in which a crushing chamber is formed, a rotating shaft rotatably provided in the crushing chamber, and an outer periphery of the rotating shaft. A rotary body provided rotatably with the rotary shaft, a rotary blade assembly attached to an outer periphery of the rotary body, and a fixed blade provided in the crushing chamber, the rotary blade assembly comprising: A rotary blade for crushing the object to be crushed in cooperation with the fixed blade; and a rotary blade support holder for supporting the rotary blade, and the blade portions of the rotary blade are adjacent to each other in a substantially V shape. A fixed blade for a uniaxial shearing crusher composed of straight ridge lines, wherein the fixed blades are adjacent to each other in a substantially V shape facing two linear ridge lines as blade portions of the rotary blade. A blade portion composed of two ridge lines that fit together, and the fixed blade facing the blade portion of the rotary blade. The tip of the blade portion is provided with a sharpened portion, and the crushing is performed so that a gap between the sharpened portion and the blade base of the blade portion of the rotary blade is maintained at a constant interval along the rotation direction of the rotary blade. It is characterized by being fixed indoors.
Further, the fixed blade includes a flank extending from the blade portion of the fixed blade toward the center in the plate thickness direction of the fixed blade, and the sharpened portion is a line of intersection between the pair of flank surfaces that intersect on the rotating shaft side. When formed and attached to the uniaxial shearing type crusher, the sharpened portion may be at a constant interval from the rotation trajectory of the base of the rotary blade.
Further, in this fixed blade, when the fixed blade is attached to the uniaxial shearing type crusher, the clearance surface is spaced from the corresponding blade portion of the rotary blade at a constant interval along the rotation direction of the rotary blade. May be formed.
In addition, in order to solve the above-described problem, a rotary blade support holder according to an aspect of the present invention includes a crusher body in which a crushing chamber is formed, a rotating shaft rotatably provided in the crushing chamber, and the rotation A rotary body provided on the outer periphery of the shaft so as to be rotatable together with the rotary shaft; a rotary blade assembly attached to the outer periphery of the rotary body; and a fixed blade provided in the crushing chamber; The solid body includes a rotary blade that crushes the object to be crushed in cooperation with the fixed blade, and a rotary blade support holder that supports the rotary blade, and the blade portion of the rotary blade forms a substantially V shape and is adjacent to the rotary blade. It consists of two straight ridgelines that meet, and the blade portion of the fixed blade consists of two ridgelines that are adjacent to each other in a substantially V shape facing the two straight ridgelines as the blade portion of the rotary blade, A uniaxial shear type crusher formed by arranging a plurality of blade portions of the fixed blades in parallel. The rotary blade support holder is provided with a sharpened portion at the tip of the blade portion of the fixed blade facing the blade portion of the rotary blade, and the sharpened portion is provided between the blade base of the blade portion of the rotary blade. The gap is formed so as to be held at a constant interval along the rotation direction of the rotary blade, and the rotary blade support holder includes a protrusion on a shoulder portion located on the blade base side of the blade portion of the rotary blade. It is characterized by that.

本発明に係る一軸剪断式破砕機によれば、回転刃の刃部と対向する固定刃の刃部の先端に先鋭部を設け、該先鋭部を、回転刃の刃部の刃元との間の隙間を、回転刃の回転方向に沿って一定間隔に保持するように形成したので、回転刃と固定刃とが協働して被破砕物を破砕する際に、回転刃の刃部の刃元と固定刃の刃部の先端に設けた先鋭部との間の隙間を一定にすることができる。これにより、被破砕物が、当該隙間からすり抜けるのを防止し、被破砕物の破砕効率を一層向上することができる。回転刃と固定刃とが協働して被破砕物を破砕する際に、一定間隔に保持されている回転刃の刃部の刃元と固定刃の刃部の先鋭部との隙間においても、被破砕物は、回転する回転刃の刃部に引きずられる。回転刃の固定刃に対する相対移動による被破砕物に対する剪断力に加えて、一定間隔に保持されている回転刃の刃部の刃元と固定刃の刃部の先鋭部との隙間において被破砕物を引きずる被破砕物に対する引張力の相乗効果により、被破砕物の破砕効率が向上する。   According to the uniaxial shearing crusher according to the present invention, a sharpened portion is provided at the tip of the blade portion of the fixed blade facing the blade portion of the rotary blade, and the sharpened portion is provided between the blade portion of the blade portion of the rotary blade. Is formed so as to be held at a constant interval along the rotation direction of the rotary blade. When the rotary blade and the fixed blade cooperate to crush the object to be crushed, the blade of the rotary blade The gap between the base and the sharpened portion provided at the tip of the blade portion of the fixed blade can be made constant. Thereby, it can prevent that a to-be-crushed object slips through the said clearance gap, and can further improve the crushing efficiency of a to-be-crushed object. When the rotary blade and the fixed blade cooperate to crush the object to be crushed, even in the gap between the blade base of the rotary blade and the sharp edge of the fixed blade held at a constant interval, The object to be crushed is dragged by the blade part of the rotating rotary blade. In addition to the shearing force on the object to be crushed by the relative movement of the rotary blade to the fixed blade, the object to be crushed in the gap between the blade base of the rotary blade and the sharp edge of the fixed blade held at a constant interval Due to the synergistic effect of tensile force on the object to be crushed, the efficiency of crushing the object to be crushed is improved.

本発明の実施形態に係る一軸剪断式破砕機の断面図である。It is sectional drawing of the uniaxial shearing type crusher which concerns on embodiment of this invention. 図１に示す一軸剪断式破砕機における回転刃と固定刃の協働関係を説明するもので、（Ａ）は回転刃の刃部の刃先が固定刃のすくい面上にきたときの状態の断面模式図、（Ｂ）は（Ａ）における矢印２Ｂで示す部分の拡大図である。FIG. 2 explains the cooperative relationship between a rotary blade and a fixed blade in the uniaxial shearing crusher shown in FIG. 1, and (A) is a cross-section when the blade tip of the rotary blade comes on the rake face of the fixed blade. Schematic diagram, (B) is an enlarged view of the portion indicated by arrow 2B in (A). 図１に示す一軸剪断式破砕機における回転刃と固定刃の協働関係を説明するもので、回転刃の刃部の刃先が固定刃の逃げ面の頂点にきたときの状態の断面模式図である。FIG. 2 is a cross-sectional schematic diagram illustrating a cooperative relationship between a rotary blade and a fixed blade in the uniaxial shearing crusher shown in FIG. 1 when the blade tip of the rotary blade comes to the apex of the fixed blade flank. is there. 図１に示す一軸剪断式破砕機における回転刃と固定刃の協働関係を説明するもので、回転刃の刃部の刃元が固定刃のすくい面上にきたときの状態の断面模式図である。FIG. 2 is a cross-sectional schematic diagram illustrating a cooperative relationship between a rotary blade and a fixed blade in the uniaxial shearing crusher shown in FIG. 1 when the blade portion of the rotary blade comes on the rake face of the fixed blade. is there. 図４における矢印５−５から見た模式図である。It is the schematic diagram seen from the arrow 5-5 in FIG. 図１に示す一軸剪断式破砕機における回転刃と固定刃の協働関係を説明するもので、回転刃の刃部の刃先が固定刃の裏側のすくい面上にきたときの状態の断面模式図である。FIG. 2 is a cross-sectional schematic diagram illustrating the cooperative relationship between the rotary blade and the fixed blade in the uniaxial shearing crusher shown in FIG. 1 when the blade tip of the rotary blade comes on the rake face on the back side of the fixed blade. It is. 図１に示す一軸剪断式破砕機における回転刃と固定刃の協働関係を説明するもので、回転刃が固定刃を通過した後の状態の断面模式図である。FIG. 2 is a schematic cross-sectional view of a state after the rotary blade has passed through the fixed blade, illustrating the cooperative relationship between the rotary blade and the fixed blade in the uniaxial shear crusher shown in FIG. 1. 図１に示す一軸剪断式破砕機に用いられる回転体を示し、（Ａ）は回転体の部分正面模式図、（Ｂ）は（Ａ）における８Ｂ−８Ｂ線に沿う断面図である。The rotary body used for the uniaxial shearing type crusher shown in FIG. 1 is shown, (A) is a partial front schematic diagram of a rotary body, (B) is sectional drawing which follows the 8B-8B line in (A). 図１に示す一軸剪断式破砕機に用いられる回転刃組立体の分解斜視図である。It is a disassembled perspective view of the rotary blade assembly used for the uniaxial shear type crusher shown in FIG. 回転刃組立体を構成する回転刃支持ホルダを示し、（Ａ）は平面図、（Ｂ）は正面図、（Ｃ）は左側面図である。The rotary blade support holder which comprises a rotary blade assembly is shown, (A) is a top view, (B) is a front view, (C) is a left view. 回転刃組立体を構成する回転刃支持ホルダを示し、（Ａ）は図１０（Ａ）における１１Ａ−１１Ａ線に沿う断面図、（Ｂ）は図１０（Ａ）における１１Ｂ−１１Ｂ線に沿う断面図、（Ｃ）は図１０（Ａ）における矢印１１Ｃ−１１Ｃ方向から見た図である。The rotary blade support holder which comprises a rotary blade assembly is shown, (A) is sectional drawing which follows the 11A-11A line in FIG. 10 (A), (B) is the cross section which follows the 11B-11B line in FIG. 10 (A). FIG. 10C is a view seen from the direction of the arrow 11C-11C in FIG. 図１に示す一軸剪断式破砕機に用いられる固定刃組立体の部分平面図である。It is a fragmentary top view of the fixed blade assembly used for the uniaxial shear type crusher shown in FIG. 固定刃組立体を構成する中央固定刃の斜視図である。It is a perspective view of the center fixed blade which comprises a fixed blade assembly. 図１３に示す中央固定刃を示し、（Ａ）は平面図、（Ｂ）は正面図である。The center fixed blade shown in FIG. 13 is shown, (A) is a top view, (B) is a front view. 図１３に示す中央固定刃を示し、（Ａ）は右側面図、（Ｂ）は左側面図、（Ｃ）は背面図である。The center fixed blade shown in FIG. 13 is shown, (A) is a right side view, (B) is a left side view, and (C) is a rear view. 固定刃組立体を構成する右側固定刃の斜視図である。It is a perspective view of the right side fixed blade which comprises a fixed blade assembly. 図１６に示す右側固定刃を示し、（Ａ）は平面図、（Ｂ）は正面図である。The right side fixed blade shown in FIG. 16 is shown, (A) is a top view, (B) is a front view. 図１６に示す右側固定刃を示し、（Ａ）は右側面図、（Ｂ）は左側面図、（Ｃ）は背面図である。The right fixed blade shown in FIG. 16 is shown, (A) is a right side view, (B) is a left side view, and (C) is a rear view. 固定刃組立体を構成する左側固定刃の斜視図である。It is a perspective view of the left side fixed blade which comprises a fixed blade assembly. 図１９に示す左側固定刃を示し、（Ａ）は平面図、（Ｂ）は正面図である。The left fixed blade shown in FIG. 19 is shown, (A) is a plan view, and (B) is a front view. 図１９に示す左側固定刃を示し、（Ａ）は右側面図、（Ｂ）は左側面図、（Ｃ）は背面図である。The left fixed blade shown in FIG. 19 is shown, (A) is a right side view, (B) is a left side view, and (C) is a rear view. 従来例の一軸剪断式破砕機の断面図である。It is sectional drawing of the uniaxial shearing type crusher of a prior art example. 図２２に示す一軸剪断式破砕機における回転刃と固定刃の協働関係を説明するもので、（Ａ）は回転刃の刃部の刃先が固定刃のすくい面上にきたときの状態の断面模式図、（Ｂ）は（Ａ）における矢印２３Ｂで示す部分の拡大図である。FIG. 22 is a diagram for explaining the cooperative relationship between the rotary blade and the fixed blade in the uniaxial shearing crusher shown in FIG. 22, and (A) is a cross-section of the state when the blade tip of the rotary blade comes on the rake face of the fixed blade. Schematic (B) is an enlarged view of a portion indicated by arrow 23B in (A). 図２２に示す一軸剪断式破砕機における回転刃と固定刃の協働関係を説明するもので、（Ａ）は回転刃の刃部の刃元が固定刃のすくい面上にきたときの状態の断面模式図、（Ｂ）は（Ａ）の状態から回転刃の回転が進行した状態の断面模式図である。FIG. 22 illustrates the cooperative relationship between the rotary blade and the fixed blade in the uniaxial shearing crusher shown in FIG. 22, and (A) shows the state when the blade base of the rotary blade comes on the rake face of the fixed blade. Cross-sectional schematic diagram, (B) is a schematic cross-sectional diagram of the state in which the rotation of the rotary blade has progressed from the state of (A). 図２４（Ａ）における矢印２５−２５から見た模式図である。It is the schematic diagram seen from the arrow 25-25 in FIG. 図２２に示す一軸剪断式破砕機に用いられる回転体の部分正面図である。It is a partial front view of the rotary body used for the uniaxial shearing type crusher shown in FIG. 図２２に示す一軸剪断式破砕機に用いられる回転刃組立体の分解斜視図である。It is a disassembled perspective view of the rotary blade assembly used for the uniaxial shear type crusher shown in FIG. 図２２に示す一軸剪断式破砕機に用いられる固定刃組立体の部分平面図である。It is a fragmentary top view of the fixed blade assembly used for the uniaxial shear type crusher shown in FIG.

以下、本発明の実施の形態を図面を参照して説明する。
図１に示す一軸剪断式破砕機１は、被破砕物Ｗを破砕するものであって、内部に破砕室３を形成した破砕機体２を備えている。破砕機体２の破砕室３内には、回転軸４が回転可能に設けられている。回転軸４の外周には、回転軸４とともに回転可能な回転体５が設けられている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A uniaxial shearing crusher 1 shown in FIG. 1 crushes an object W to be crushed and includes a crusher body 2 in which a crushing chamber 3 is formed. A rotating shaft 4 is rotatably provided in the crushing chamber 3 of the crushing machine body 2. A rotating body 5 that can rotate together with the rotating shaft 4 is provided on the outer periphery of the rotating shaft 4.

この回転体５の外周には、図１及び図８に示すように、複数の回転刃組立体６が取り付けられている。各回転刃組立体６は、後述する固定刃組立体１０の固定刃１１と協働して被破砕物Ｗを破砕する回転刃７と、回転刃７を支持する回転刃支持ホルダ８とを備えている。回転体５の外周面には、図８（Ａ）,（Ｂ）に示すように、円周方向に延びる複数個の弧状溝５ａが軸方向に沿って並列に形成されている。各弧状溝５ａには、回転刃組立体６を取付けるための取付溝５ｂが設けられている。取付溝５ｂは、円周方向に沿って所定ピッチで複数個形成され、軸方向に沿って隣り合う取付溝５ｂの位相が少しずつずれるように形成されている。このため、取付溝５ｂに取り付けられた回転刃組立体６の回転刃７は、円周方向に沿って所定ピッチで複数個配置されるとともに、軸方向に沿って隣り合う回転刃７の位相が少しずつずれるように配置される。   As shown in FIGS. 1 and 8, a plurality of rotary blade assemblies 6 are attached to the outer periphery of the rotary body 5. Each rotary blade assembly 6 includes a rotary blade 7 for crushing an object W to be crushed in cooperation with a fixed blade 11 of a fixed blade assembly 10 to be described later, and a rotary blade support holder 8 for supporting the rotary blade 7. ing. As shown in FIGS. 8A and 8B, a plurality of arc-shaped grooves 5 a extending in the circumferential direction are formed in parallel along the axial direction on the outer peripheral surface of the rotating body 5. Each arcuate groove 5 a is provided with a mounting groove 5 b for mounting the rotary blade assembly 6. A plurality of mounting grooves 5b are formed at a predetermined pitch along the circumferential direction, and are formed such that the phases of the mounting grooves 5b adjacent to each other along the axial direction are slightly shifted. Therefore, a plurality of rotary blades 7 of the rotary blade assembly 6 attached to the attachment groove 5b are arranged at a predetermined pitch along the circumferential direction, and the phases of the adjacent rotary blades 7 along the axial direction are the same. It is arranged so that it is shifted little by little.

回転刃７は、図９に示すように、正方形断面の角柱状に形成され、その表面７ｂの四個の稜線のうちの略Ｖ字状をなして隣り合う二つの稜線及び残りの略Ｖ字状をなして隣り合う二つの稜線をそれぞれ刃部７ａとしている。回転刃７は、刃部７ａの摩耗状況を見て裏返して用い、その裏面の四個の稜線のうちの略Ｖ字状をなして隣り合う二つの稜線及び残りの略Ｖ字状をなして隣り合う二つの稜線もそれぞれ刃部７ａとしている。回転刃７の材質としては、例えば、超硬合金が使用される。   As shown in FIG. 9, the rotary blade 7 is formed in a square column shape having a square cross section, and the two ridge lines adjacent to each other in the form of a substantially V-shape among the four ridge lines of the surface 7 b and the remaining substantially V-shape. Two ridge lines that are adjacent to each other are formed as blade portions 7a. The rotary blade 7 is used by turning over in view of the state of wear of the blade portion 7a, and is formed in a substantially V-shape among the four ridge lines on the back surface thereof and the two adjacent ridge lines and the remaining substantially V-shape. Two adjacent ridgelines are also defined as blade portions 7a. As a material of the rotary blade 7, for example, a cemented carbide is used.

回転刃支持ホルダ８は、図２及び図９に示すように、回転方向である前後方向及び回転軸方向である幅方向に延びる角ブロック状のホルダ本体８ａを備えている。このホルダ本体８ａの回転方向前側には、回転刃７を収容する回転刃収容凹部８ｂが形成されている。回転刃収容凹部８ｂは、図９及び図１０（Ｂ）に示すように、ホルダ本体８ａの幅方向の中央部において上側に開いた互いになす角度が９０度のＶ字形に凹んでいる。そして、ホルダ本体８ａの回転刃収容凹部８ｂの回転方向後側には、ホルダ本体８ａからＶ字形に突出するＶ字形突起部８ｃが設けられている。Ｖ字形突起部８ｃの形状については、後に詳述する。また、ホルダ本体８ａには、回転刃収容凹部８ｂの幅方向両側からＶ字形突起部８ｃの幅方向両側にかけて前後方向に延びる１対の肩部８ｄが形成されている。各肩部８ｄは、回転刃７を回転刃収容凹部８ｂに収容したときに回転刃７の刃部７ａの刃元７ａｂ側に位置する。各肩部８ｄには、突起部８ｅ及び溝８ｆが設けられている。突起部８ｅ及び溝８ｆについては、後に詳述する。回転刃支持ホルダ８の材質としては、例えば、耐摩耗性に優れた低合金鋼が使用される。   As shown in FIGS. 2 and 9, the rotary blade support holder 8 includes a rectangular block-shaped holder body 8 a extending in the front-rear direction that is the rotation direction and the width direction that is the rotation axis direction. A rotary blade housing recess 8b for housing the rotary blade 7 is formed on the front side in the rotational direction of the holder body 8a. As shown in FIGS. 9 and 10B, the rotary blade accommodating recess 8b is recessed in a V shape having an angle of 90 degrees opened upward at the center in the width direction of the holder body 8a. And the V-shaped protrusion part 8c which protrudes in a V shape from the holder main body 8a is provided in the rotation direction rear side of the rotary blade accommodation recessed part 8b of the holder main body 8a. The shape of the V-shaped protrusion 8c will be described in detail later. The holder main body 8a is formed with a pair of shoulder portions 8d extending in the front-rear direction from both sides in the width direction of the rotary blade accommodating recess 8b to both sides in the width direction of the V-shaped protrusion 8c. Each shoulder portion 8d is located on the blade base 7ab side of the blade portion 7a of the rotary blade 7 when the rotary blade 7 is received in the rotary blade receiving recess 8b. Each shoulder 8d is provided with a protrusion 8e and a groove 8f. The protrusion 8e and the groove 8f will be described in detail later. As a material of the rotary blade support holder 8, for example, low alloy steel having excellent wear resistance is used.

回転刃支持ホルダ８の回転刃収容凹部８ｂには、図９に示すように、回転刃７がその表面７ｂ側を前面側にして収容される。回転刃７は取付ボルト７ｄにより取付孔８ｊ及びねじ孔７ｃを介して回転刃支持ホルダ８に取り付けられる。この際、刃部７ａの刃先７ａａが上側に、刃部７ａの刃元７ａｂが下側になるように回転刃７を取り付ける。回転刃組立体６は、回転体５の取付溝５ｂに回転刃７を前側にして、回転刃支持ホルダ８に形成された取付孔８ｉを介して取付ボルト７ｅにより取り付けられる。   As shown in FIG. 9, the rotary blade 7 is accommodated in the rotary blade receiving recess 8b of the rotary blade support holder 8 with the front surface 7b side being the front side. The rotary blade 7 is attached to the rotary blade support holder 8 through the attachment hole 8j and the screw hole 7c by the attachment bolt 7d. At this time, the rotary blade 7 is attached so that the blade edge 7aa of the blade portion 7a is on the upper side and the blade base 7ab of the blade portion 7a is on the lower side. The rotary blade assembly 6 is attached to the mounting groove 5b of the rotary body 5 with the mounting blade 7e through the mounting hole 8i formed in the rotary blade support holder 8 with the rotary blade 7 in front.

また、破砕機体２の破砕室３内には、図１に示すように、固定刃組立体１０が設けられている。固定刃組立体１０は、回転刃７と協働して被破砕物Ｗを破砕する複数の固定刃１１と、固定刃１１を取り付けた取付座体１２とを備えている。
複数の固定刃１１は、図１２に示すように、並列に並べられて取付座体１２に取り付けられる。具体的には、図１３乃至図１５に示す中央の固定刃１１と、この中央の固定刃１１の右側に配置された、図１６乃至図１８に示す右側の固定刃１１と、中央の固定刃１１の左側に配置された、図１９乃至図２１に示す左側の固定刃１１とが、並列に並べられて取付座体１２に取り付けられる。 Further, a fixed blade assembly 10 is provided in the crushing chamber 3 of the crushing machine body 2 as shown in FIG. The fixed blade assembly 10 includes a plurality of fixed blades 11 for crushing the object to be crushed W in cooperation with the rotary blade 7 and a mounting seat 12 to which the fixed blades 11 are attached.
As shown in FIG. 12, the plurality of fixed blades 11 are arranged in parallel and attached to the attachment seat body 12. Specifically, the central fixed blade 11 shown in FIGS. 13 to 15, the right fixed blade 11 shown in FIGS. 16 to 18 disposed on the right side of the central fixed blade 11, and the central fixed blade The left fixed blade 11 shown in FIG. 19 to FIG. 21 disposed on the left side of 11 is arranged in parallel and attached to the mounting seat 12.

中央、右側及び左側の各固定刃１１は、基本構成及び基本形状は同一であるので、図１３乃至図１５に示す中央の固定刃１１の構成のみについて説明する。中央の固定刃１１は、図１３乃至図１５に示すように、略矩形状板で構成され、回転刃７の刃部７ａに対向する略Ｖ字状をなして隣り合う二つの稜線からなる複数の刃部１１ａを備えている。刃部１１ａは、図１４（Ｂ）、図１５（Ａ）,(Ｂ)に示すように、固定刃１１の表面（すくい面１１ｂ）と裏面との双方に形成されている。刃部１１ａは、固定刃１１の一端縁（図１２における下端縁）に沿って並列に並べて複数形成されている。また、固定刃１１の表裏面に形成された各刃部１１ａからは、固定刃１１の板厚方向中央に向けて延びる逃げ面１１ｄが形成されている。各逃げ面１１ｄの形状については、後に詳述する。また、固定刃１１の表裏面に形成された刃部１１ａの先端には、先鋭部１１ｃが形成されている。先鋭部１１ｃの形状についても、後に詳述する。被破砕物Ｗの破砕に際しては、図１に示すように、表面側の刃部１１ａを用いるが、刃部１１ａの摩耗状況を見て裏返して用い、その場合、裏面側に形成されている刃部１１ａを用いる。固定刃１１の材質としては、例えば、合金工具鋼が使用される。   Since the basic configuration and the basic shape of the fixed blades 11 at the center, the right side, and the left side are the same, only the configuration of the central fixed blade 11 shown in FIGS. 13 to 15 will be described. As shown in FIGS. 13 to 15, the central fixed blade 11 is formed of a substantially rectangular plate, and includes a plurality of adjacent ridgelines that form a substantially V shape facing the blade portion 7 a of the rotary blade 7. The blade part 11a is provided. The blade portion 11a is formed on both the front surface (rake surface 11b) and the back surface of the fixed blade 11, as shown in FIGS. 14B, 15A, and 15B. A plurality of blade portions 11a are formed side by side along one edge of the fixed blade 11 (lower edge in FIG. 12). Further, flank surfaces 11 d extending toward the center in the plate thickness direction of the fixed blade 11 are formed from the blade portions 11 a formed on the front and back surfaces of the fixed blade 11. The shape of each flank 11d will be described in detail later. A sharpened portion 11 c is formed at the tip of the blade portion 11 a formed on the front and back surfaces of the fixed blade 11. The shape of the sharpened portion 11c will also be described in detail later. When crushing the object W to be crushed, as shown in FIG. 1, the blade portion 11a on the front surface side is used. However, the blade portion 11a is used by turning over to see the wear state of the blade portion 11a. Part 11a is used. As a material of the fixed blade 11, for example, alloy tool steel is used.

取付座体１２は、図１２に示すように、表面側に各固定刃１１を取り付けるための取付凹部１２ａを備えている。各固定刃１１は、刃部１１ａが取付座体１２から突出するように取付凹部１２ａに取り付けられる。各固定刃１１の取付けに際しては、調節ボルト１４及びナット１５により刃部１１ａの突出量を調節しておいてから、固定刃１１に形成された長孔１１ｅを介して取付けボルト１３により固定刃１１を着脱自在に取付座体１２に取付固定する。そして、図１に示すように、固定刃１１の刃部１１ａが回転体５の方に向くようにして取付座体１２が破砕機体２に取り付けられ、これにより固定刃組立体１０が破砕機体２に取り付けられる。   As shown in FIG. 12, the mounting seat 12 includes mounting recesses 12 a for mounting the fixed blades 11 on the surface side. Each fixed blade 11 is attached to the attachment recess 12 a so that the blade portion 11 a protrudes from the attachment seat body 12. When attaching each fixed blade 11, the protruding amount of the blade portion 11 a is adjusted by the adjusting bolt 14 and the nut 15, and then the fixed blade 11 is attached by the mounting bolt 13 through the long hole 11 e formed in the fixed blade 11. Is fixedly attached to the mounting seat 12 in a detachable manner. Then, as shown in FIG. 1, the mounting seat 12 is attached to the crushing machine body 2 so that the blade portion 11 a of the fixed blade 11 faces the rotating body 5, whereby the fixed blade assembly 10 is attached to the crushing machine body 2. Attached to.

ここで、固定刃組立体１０は、図１に示すように、固定刃１１の表面としてのすくい面１１ｂが水平軸線Ｌに対して回転軸４に向かって前下がり状に角度α分傾斜配置されている。また、固定刃組立体１０は、固定刃１１のすくい面１１ｂが回転軸４の中心軸Ｏに対して距離Ｅ分ずらして配置されている。これにより、図２（Ａ）に示すように、回転刃７の回転方向前面であるすくい面と固定刃１１の表面であるすくい面１１ｂとが剪断開始時において剪断角度θとなるように配置されている。   Here, as shown in FIG. 1, in the fixed blade assembly 10, a rake face 11 b as a surface of the fixed blade 11 is inclined with respect to the horizontal axis L toward the rotary shaft 4 by an angle α. ing. Further, in the fixed blade assembly 10, the rake face 11 b of the fixed blade 11 is arranged so as to be shifted from the center axis O of the rotating shaft 4 by the distance E. As a result, as shown in FIG. 2A, the rake face that is the front surface of the rotary blade 7 in the rotational direction and the rake face 11b that is the surface of the fixed blade 11 are arranged at a shear angle θ at the start of shearing. ing.

被破砕物Ｗの破砕に際し、回転刃７の刃部７ａは、回転軸４の中心軸Ｏを中心に円運動をする。回転刃７の刃部７ａの刃先７ａａの回転軌跡は、図２（Ａ）、図３、図４、図６及び図７に示すように、Ｈとなる。
一方、固定刃１１の刃部１１ａは、Ｖ字状の隣り合う稜線が凹曲線状となる形状に形成されている。そして、図２（Ｂ）に示すように、回転刃７の刃部７ａの刃先７ａａが固定刃１１のすくい面１１ｂ上にきたときに、回転刃７の刃部７ａの刃先７ａａと固定刃１１の刃部１１ａと隙間がδ１となるように固定刃１１の刃部１１ａが形成されている。そして、固定刃１１の刃部１１ａを含む逃げ面１１ｄの形状は、回転刃７の刃部７ａとの間の隙間を回転刃７の回転方向に沿って一定間隔に保持するように形成されている。ここで、「一定間隔に保持する」とは、回転刃７の回転の進行によって当該隙間がなるべく拡大しないように、当該隙間の拡大見込み分を設計上無理のない程度で回転に沿った形状で補充することを意味し、隙間の寸法が厳密に一定であるか一定でないかを問わない。図４に示すように、回転刃７の刃部７ａの刃元７ａｂが固定刃１１のすくい面１１ｂ上にきたときには、図５に示すように、回転刃７の刃部７ａの刃先７ａａと固定刃１１の刃部１１ａを含む逃げ面１１ｄと隙間は、一定に保持されδ１のままである。一方、回転刃７の刃部７ａの刃元７ａｂと固定刃１１の刃部１１ａを含む逃げ面１１ｄと隙間は、δ１よりもやや大きくδ２である。回転刃７の刃部７ａと固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間の隙間は、回転刃７の刃先７ａａから刃元７ａｂにかけてδ１からδ２にかけて斬次増加し、この隙間が回転刃７の回転方向に沿って一定間隔に保持されている。隙間δ１は、回転刃７の刃部７ａの刃先７ａａと固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間が可及的に近接するように維持されていればよい。また、隙間δ２は、隙間δ１よりも大きいが、回転刃７の刃部７ａの刃元７ａｂと固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間が可及的に近接するように維持されていればよい。
ここでは隙間δ２が隙間δ１よりやや大きい場合の態様を説明したが、本発明においてはこの態様に限定されず、隙間δ２は隙間δ１と同等あるいは小さくても構わない。 When crushing the object to be crushed W, the blade portion 7 a of the rotary blade 7 performs a circular motion around the central axis O of the rotary shaft 4. The rotation locus of the blade edge 7aa of the blade portion 7a of the rotary blade 7 is H as shown in FIG. 2 (A), FIG. 3, FIG. 4, FIG.
On the other hand, the blade portion 11a of the fixed blade 11 is formed in a shape in which adjacent V-shaped ridge lines are concave curves. 2B, when the blade edge 7aa of the blade portion 7a of the rotary blade 7 comes on the rake face 11b of the fixed blade 11, the blade edge 7aa of the blade portion 7a of the rotary blade 7 and the fixed blade 11 The blade portion 11a of the fixed blade 11 is formed so that the clearance from the blade portion 11a is δ1. And the shape of the flank 11d including the blade part 11a of the fixed blade 11 is formed so as to hold a gap between the rotary blade 7 and the blade part 7a at regular intervals along the rotation direction of the rotary blade 7. Yes. Here, “holding at a constant interval” means a shape that follows the rotation to the extent that the expected expansion of the gap is not unreasonable in design so that the gap is not enlarged as much as possible by the rotation of the rotary blade 7. It means replenishment, and it does not matter whether the dimension of the gap is strictly constant or not constant. As shown in FIG. 4, when the blade base 7 ab of the blade portion 7 a of the rotary blade 7 comes on the rake face 11 b of the fixed blade 11, as shown in FIG. 5, it is fixed to the cutting edge 7 aa of the blade portion 7 a of the rotary blade 7. The clearance surface 11d including the blade portion 11a of the blade 11 and the gap are kept constant and remain δ1. On the other hand, the clearance surface 11d including the blade base 7ab of the blade portion 7a of the rotary blade 7 and the blade portion 11a of the fixed blade 11 and the gap are slightly larger than δ1 and δ2. The clearance between the blade portion 7a of the rotary blade 7 and the flank 11d including the blade portion 11a of the fixed blade 11 increases gradually from δ1 to δ2 from the cutting edge 7aa to the blade base 7ab of the rotary blade 7, and this clearance is increased. The rotating blades 7 are held at regular intervals along the rotation direction. The clearance δ1 may be maintained so that the cutting edge 7aa of the blade portion 7a of the rotary blade 7 and the flank 11d including the blade portion 11a of the fixed blade 11 are as close as possible. Further, although the gap δ2 is larger than the gap δ1, the gap δ2 is maintained so that the blade base 7ab of the blade portion 7a of the rotary blade 7 and the flank 11d including the blade portion 11a of the fixed blade 11 are as close as possible. It only has to be done.
Here, a mode in which the gap δ2 is slightly larger than the gap δ1 has been described. However, the present invention is not limited to this mode, and the gap δ2 may be equal to or smaller than the gap δ1.

そして、固定刃１１の刃部１１ａの先端に設けられた先鋭部１１ｃの形状は、刃部１１ａの先端から尖るように形成され、回転刃７の刃部７ａの刃元７ａｂとの間の隙間を回転刃７の回転方向に沿って一定間隔に保持する形状になっている。ここで、「一定間隔に保持する」とは、回転刃７の回転の進行によって当該隙間がなるべく拡大しないように、当該隙間の拡大見込み分を設計上無理のない程度で回転に沿った形状で補充することを意味し、隙間の寸法が厳密に一定であるか一定でないかを問わない。即ち、図５に示すように、回転刃７の刃部７ａの刃元７ａｂが固定刃１１のすくい面１１ｂ上にきたときには、回転刃７の刃部７ａの刃元７ａｂと固定刃１１の刃部１１ａを含む逃げ面１１ｄと隙間は、δ２である。この回転刃７の刃部７ａの刃元７ａｂが固定刃１１のすくい面１１ｂ上にきたときの、回転刃７の刃部７ａの刃元７ａｂと固定刃１１の刃部１１ａを含む逃げ面１１ｄとの隙間と、回転刃７の刃部７ａの刃元７ａｂと先鋭部１１ｃとの間の隙間とは同一であり、δ２である。先鋭部１１ｃの形状は、当該隙間を、回転刃７の回転方向に沿って一定間隔δ２に保持するように形成されている。具体的に述べると、図４において、回転刃７の刃部７ａの刃元７ａｂの回転軌跡Ｆと先鋭部１１ｃの先端部との間がδ２となるように、先鋭部１１ｃは形成されている。   And the shape of the sharpened part 11c provided in the front-end | tip of the blade part 11a of the fixed blade 11 is formed so that it may sharpen from the front-end | tip of the blade part 11a, and the clearance gap between the blade base 7ab of the blade part 7a of the rotary blade 7a Are held at regular intervals along the rotational direction of the rotary blade 7. Here, “holding at a constant interval” means a shape that follows the rotation to the extent that the expected expansion of the gap is not unreasonable in design so that the gap is not enlarged as much as possible by the rotation of the rotary blade 7. It means replenishment, and it does not matter whether the dimension of the gap is strictly constant or not constant. That is, as shown in FIG. 5, when the blade base 7ab of the blade portion 7a of the rotary blade 7 comes on the rake face 11b of the fixed blade 11, the blade base 7ab of the blade portion 7a of the rotary blade 7 and the blade of the fixed blade 11 The clearance surface 11d including the portion 11a and the gap are δ2. When the blade base 7ab of the blade portion 7a of the rotary blade 7 comes on the rake face 11b of the fixed blade 11, a clearance surface 11d including the blade base 7ab of the blade portion 7a of the rotary blade 7 and the blade portion 11a of the fixed blade 11 is obtained. And the gap between the blade base 7ab of the blade portion 7a of the rotary blade 7 and the sharpened portion 11c are the same, and is δ2. The shape of the sharpened portion 11 c is formed so as to hold the gap at a constant interval δ2 along the rotation direction of the rotary blade 7. Specifically, in FIG. 4, the sharpened portion 11c is formed so that the distance between the rotation locus F of the blade base 7ab of the blade portion 7a of the rotary blade 7 and the tip of the sharpened portion 11c is δ2. .

また、回転刃支持ホルダ８は、被破砕物Ｗの破砕に際し、回転軸４の中心軸Ｏを中心に円運動をする。回転刃支持ホルダ８は、前述したように、ホルダ本体８ａの回転刃収容凹部８ｂの回転方向後側にＶ字状突起部８ｃを備えている。このＶ字状突起部８ｃの頂線８ｈを含む外形形状は、固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間の隙間を回転刃支持ホルダ８の回転方向に沿って一定間隔に保持するように形成されている。ここで、「一定間隔に保持する」とは、回転刃７の回転の進行によって当該隙間がなるべく拡大しないように、当該隙間の拡大見込み分を設計上無理のない程度で回転に沿った形状で補充することを意味し、隙間の寸法が厳密に一定であるか一定でないかを問わない。具体的に述べると、Ｖ字状突起部８ｃの頂線８ｈは、図１０（Ｃ）に示すように、回転軸４の中心軸Ｏからの半径がＨｌの円弧状に形成されている。そして、半径がＨｌの円弧状の頂線８ｈの回転軌跡と、回転刃７の刃部７ａの刃先７ａａの回転軌跡Ｈとが同一になっている。従って、Ｖ字状突起部８ｃの頂線８ｈと固定刃１１の刃部１１ａを含む逃げ面１１ｄと隙間は、Ｖ字状突起部８ｃの頂線８ｈが固定刃１１のすくい面１１ｂ上にきてから固定刃１１の先端部を通り過ぎるまで一定に保持され、図５に示すδ１である。一方、回転刃支持ホルダ８の刃元７ａｂ側の肩部８ｄ（Ｖ字状突起部８ｃの付け根の部分）には、図１０（Ａ）,（Ｂ），（Ｃ）及び図１１（Ａ），（Ｂ），（Ｃ）に示すように、回転軸４の中心軸Ｏからの半径がＦｌの円弧状に形成された溝底８ｇを有する溝８ｆが形成されている。そして、半径がＦｌの円弧状の溝底８ｇの回転軌跡と、回転刃７の刃部７ａの刃元７ａｂの回転軌跡Ｆとが同一になっている。従って、溝８ｆの円弧状溝底８ｇと固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間の隙間、具体的には、溝８ｆの円弧状溝底８ｇと固定刃１１に設けられた先鋭部１１ｃとの間の隙間は、溝８ｆの円弧状溝底８ｇが固定刃１１のすくい面１１ｂ上にきてから固定刃１１の先端部を通り過ぎるまで一定に保持され、図５に示すδ２である。Ｖ字状突起部８ｃの外形と固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間の隙間は、Ｖ字状突起部８ｃの頂線８ｈから溝底８ｇにかけてδ１からδ２にかけて斬次増加し、この隙間が回転刃７の回転方向に沿って一定間隔に保持されている。   Further, the rotating blade support holder 8 performs a circular motion around the central axis O of the rotating shaft 4 when the object W is crushed. As described above, the rotary blade support holder 8 includes the V-shaped protrusion 8c on the rear side in the rotation direction of the rotary blade housing recess 8b of the holder body 8a. The outer shape including the top line 8h of the V-shaped protrusion 8c keeps the gap between the fixed blade 11 and the flank 11d including the blade portion 11a at a constant interval along the rotation direction of the rotary blade support holder 8. It is formed to do. Here, “holding at a constant interval” means a shape that follows the rotation to the extent that the expected expansion of the gap is not unreasonable in design so that the gap is not enlarged as much as possible by the rotation of the rotary blade 7. It means replenishment, and it does not matter whether the dimension of the gap is strictly constant or not constant. More specifically, the top line 8h of the V-shaped protrusion 8c is formed in an arc shape having a radius H1 from the central axis O of the rotating shaft 4, as shown in FIG. The rotation trajectory of the arcuate top line 8h having a radius H1 and the rotation trajectory H of the blade edge 7aa of the blade portion 7a of the rotary blade 7 are the same. Therefore, the top line 8h of the V-shaped protrusion 8c and the clearance surface 11d including the blade part 11a of the fixed blade 11 are spaced from the clearance surface 11d on the rake face 11b of the fixed blade 11. 5 until it passes through the tip of the fixed blade 11 and is δ1 shown in FIG. On the other hand, the shoulder portion 8d on the blade base 7ab side of the rotary blade support holder 8 (the base portion of the V-shaped projection portion 8c) is shown in FIGS. 10 (A), 10 (B), 10 (C) and 11 (A). , (B), (C), a groove 8f having a groove bottom 8g formed in an arc shape with a radius Fl from the central axis O of the rotating shaft 4 is formed. The rotation locus of the arc-shaped groove bottom 8g having the radius Fl and the rotation locus F of the blade base 7ab of the blade portion 7a of the rotary blade 7 are the same. Accordingly, the gap between the arcuate groove bottom 8g of the groove 8f and the clearance surface 11d including the blade portion 11a of the fixed blade 11, specifically, the arcuate groove bottom 8g of the groove 8f and the fixed blade 11 are provided. The gap between the sharpened portion 11c is held constant until the arcuate groove bottom 8g of the groove 8f passes over the rake face 11b of the fixed blade 11 and passes the tip of the fixed blade 11, and is shown in FIG. It is. The clearance between the outer shape of the V-shaped protrusion 8c and the flank 11d including the blade 11a of the fixed blade 11 increases gradually from δ1 to δ2 from the top line 8h to the groove bottom 8g of the V-shaped protrusion 8c. The gap is held at a constant interval along the rotation direction of the rotary blade 7.

更に、回転刃７の刃部７ａの刃元７ａｂ側に位置する回転刃支持ホルダ８の両肩部８ｄには、前述したように、１対の突起部８ｅが設けられている。各突起部８ｅは、溝底８ｇを挟んでＶ字状突起部８ｃの幅方向外側に位置し、根元から上方に向けて斬次細くなるように形成されている。そして、各突起部８ｅの幅方向内側面は、回転刃７の刃部７ａと対向する固定刃１１の刃部１１ａに隣接する固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間の隙間を、回転刃支持ホルダ８の回転方向に沿って一定間隔に保持するように形成されている。ここで、「一定間隔に保持する」とは、回転刃７の回転の進行によって当該隙間がなるべく拡大しないように、当該隙間の拡大見込み分を設計上無理のない程度で回転に沿った形状で補充することを意味し、隙間の寸法が厳密に一定であるか一定でないかを問わない。具体的に述べると、突起部８ｅと、隣接する固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間の隙間は、回転刃支持ホルダ８の肩部８ｄが固定刃１１のすくい面１１ｂ上にきてから固定刃１１の先端部を通り過ぎるまで一定間隔に保持される。突起部８ｅと逃げ面１１ｄとの間の隙間は、Ｖ字状突起部８ｃの外形と、回転刃７の刃部７ａと対向する固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間の隙間と同程度である。各突起部８ｅの頂線は、図１０（Ｃ）に示すように、回転軸４の中心軸Ｏからの半径がＧｌの円弧状に形成されている。そして、半径がＧｌの円弧状の頂線の回転軌跡は、図１において、Ｇで示される。   Further, as described above, a pair of protrusions 8e is provided on both shoulder portions 8d of the rotary blade support holder 8 located on the blade base 7ab side of the blade portion 7a of the rotary blade 7. Each protrusion 8e is located on the outer side in the width direction of the V-shaped protrusion 8c across the groove bottom 8g, and is formed so as to become gradually thinner upward from the root. And the width direction inner side surface of each projection part 8e is the clearance gap between the flank 11d containing the blade part 11a of the fixed blade 11 adjacent to the blade part 11a of the fixed blade 11 which opposes the blade part 7a of the rotary blade 7. FIG. Are formed at regular intervals along the rotational direction of the rotary blade support holder 8. Here, “holding at a constant interval” means a shape that follows the rotation to the extent that the expected expansion of the gap is not unreasonable in design so that the gap is not enlarged as much as possible by the rotation of the rotary blade 7. It means replenishment, and it does not matter whether the dimension of the gap is strictly constant or not constant. More specifically, the clearance between the protrusion 8e and the flank 11d including the blade 11a of the adjacent fixed blade 11 is such that the shoulder 8d of the rotary blade support holder 8 is on the rake surface 11b of the fixed blade 11. It is held at a constant interval until it passes through the tip of the fixed blade 11 after arriving. The clearance between the protrusion 8e and the flank 11d is between the outer shape of the V-shaped protrusion 8c and the flank 11d including the blade 11a of the fixed blade 11 facing the blade 7a of the rotary blade 7. It is about the same as the gap. As shown in FIG. 10C, the top line of each protrusion 8e is formed in an arc shape having a radius G1 from the central axis O of the rotating shaft 4. The rotation trajectory of the arc-shaped top line having a radius G1 is indicated by G in FIG.

そして、破砕機体２の回転体５の下方位置には、図１に示すように、複数の排出孔９ａを有するスクリーン板９が設置されている。
このように構成された一軸剪断式破砕機１において、図１に示すように、被破砕物Ｗが破砕室３内に投入される。一方、回転体５に取り付けられた回転刃７は、図２（Ａ）、図３、図４、図６及び図７に示すように、回転軸４の中心軸Ｏを中心に回転する。 And the screen board 9 which has the some discharge hole 9a is installed in the downward position of the rotary body 5 of the crushing machine body 2, as shown in FIG.
In the uniaxial shearing type crusher 1 configured as described above, the object to be crushed W is put into the crushing chamber 3 as shown in FIG. On the other hand, the rotary blade 7 attached to the rotary body 5 rotates around the central axis O of the rotary shaft 4 as shown in FIGS. 2 (A), 3, 4, 6 and 7.

破砕室３に投入された被破砕物Ｗは、回転する回転刃７の刃部７ａに引っ掛けられて固定刃１１の刃部１１ａのところに至る。そして、回転刃７の刃部７ａの回転が続行し、回転刃支持ホルダ８が固定刃１１を通過する。この際、回転刃７の刃部７ａと固定刃１１の刃部１１ａを含む逃げ面１１ｄとの隙間において、被破砕物Ｗは、回転する回転刃７の刃部７ａに引きずられる。ここで、回転刃７の固定刃１１に対する相対移動による被破砕物Ｗに対する剪断力と、前記隙間において被破砕物Ｗを引きずる被破砕物Ｗに対する引張力との相乗効果により、被破砕物Ｗは破砕される。
そして、破砕された被破砕物Ｗは下方にあるスクリーン板９の排出孔９ａから外部に排出されるのである。 The object to be crushed W put into the crushing chamber 3 is hooked on the blade part 7 a of the rotating rotary blade 7 and reaches the blade part 11 a of the fixed blade 11. Then, the rotation of the blade portion 7 a of the rotary blade 7 continues, and the rotary blade support holder 8 passes through the fixed blade 11. At this time, the object to be crushed W is dragged by the blade portion 7 a of the rotating rotary blade 7 in the gap between the blade portion 7 a of the rotary blade 7 and the flank 11 d including the blade portion 11 a of the fixed blade 11. Here, due to the synergistic effect of the shearing force on the object to be crushed W by the relative movement of the rotary blade 7 with respect to the fixed blade 11 and the tensile force on the object to be crushed W that drags the object to be crushed W in the gap, the object to be crushed W becomes It is crushed.
The crushed object W is discharged to the outside through the discharge holes 9a of the screen plate 9 below.

ここで、本実施形態に係る一軸剪断式破砕機１にあっては、回転刃７の刃部７ａの刃元７ａｂ側に位置する回転刃支持ホルダ８の肩部８ｄに、突起部８ｅが設けられている。このため、回転刃７と固定刃１１とが協働して被破砕物Ｗを破砕する際に、回転刃支持ホルダ８の肩部８ｄと、回転刃７の刃部７ａと対向する固定刃１１の刃部１１ａに隣接する刃部１１ａを含む逃げ面１１ｄとの間に突起部８ｅが存在し、当該肩部８ｄと当該固定刃１１の逃げ面１１ｄとの間の隙間が小さくなる。これにより、被破砕物Ｗが、当該隙間からすり抜けるのを防止し、被破砕物Ｗの破砕効率を向上することができる。   Here, in the uniaxial shear crusher 1 according to the present embodiment, the protrusion 8e is provided on the shoulder 8d of the rotary blade support holder 8 located on the blade base 7ab side of the blade portion 7a of the rotary blade 7. It has been. For this reason, when the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed, the fixed blade 11 facing the shoulder portion 8d of the rotary blade support holder 8 and the blade portion 7a of the rotary blade 7. The protrusion 8e is present between the flank 11d including the blade 11a adjacent to the blade 11a, and the gap between the shoulder 8d and the flank 11d of the fixed blade 11 is reduced. Thereby, it can prevent that the to-be-crushed object W slips through the said clearance gap, and can improve the crushing efficiency of the to-be-crushed object W.

また、本実施形態に係る一軸剪断式破砕機１にあっては、突起部８ｅを、回転刃７の刃部７ａと対向する固定刃１１の刃部１１ａに隣接する固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間の隙間を、回転刃支持ホルダ８の回転方向に沿って一定間隔に保持するように形成してある。このため、回転刃７と固定刃１１とが協働して被破砕物Ｗを破砕し、回転刃支持ホルダ８が固定刃１１を通過する際に、回転刃７を支持する回転刃支持ホルダ８の突起部８ｅと当該固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間の隙間を一定間隔に保持することができる。これにより、被破砕物Ｗが、当該隙間からすり抜けるのを防止し、被破砕物Ｗの破砕効率を一層向上することができる。回転刃７と固定刃１１とが協働して被破砕物Ｗを破砕し、回転刃支持ホルダ８が固定刃１１を通過する際に、一定間隔に保持されている回転刃支持ホルダ８の突起部８ｅと当該固定刃１１の刃部１１ａを含む逃げ面１１ｄとの隙間において、被破砕物Ｗは、回転する回転刃支持ホルダ８の突起部８ｅに引きずられる。回転刃７の固定刃１１に対する相対移動による被破砕物Ｗに対する剪断力に加えて、一定間隔に保持されている回転刃支持ホルダ８の突起部８ｅと当該固定刃１１の刃部１１ａを含む逃げ面１１ｄとの隙間において被破砕Ｗ物を引きずる被破砕物Ｗに対する引張力の相乗効果が発揮される。これにより、被破砕物Ｗの破砕効率が向上する。
なお、図２２乃至図２８に示した従来の一軸剪断式破砕機１０１にあっては、回転刃１０７の刃部１０７ａの刃元１０７ａｂが固定刃１１０のすくい面１１１ｂ上にきたときには、図２５に示すように、回転刃支持ホルダ１０８の肩部１０８ｃと固定刃１１１の刃部１１１ａを含む逃げ面１１１ｄとの間には、大きな隙間Ａが存在した。 Further, in the uniaxial shearing crusher 1 according to the present embodiment, the protruding portion 8e has the blade portion 11a of the fixed blade 11 adjacent to the blade portion 11a of the fixed blade 11 facing the blade portion 7a of the rotary blade 7. Is formed so as to be held at a constant interval along the rotation direction of the rotary blade support holder 8. For this reason, the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed, and the rotary blade support holder 8 that supports the rotary blade 7 when the rotary blade support holder 8 passes through the fixed blade 11. The gap between the protruding portion 8e and the flank 11d including the blade portion 11a of the fixed blade 11 can be maintained at a constant interval. Thereby, it can prevent that the to-be-crushed object W slips through the said clearance gap, and can further improve the crushing efficiency of the to-be-crushed object W. The protrusions of the rotary blade support holder 8 that are held at regular intervals when the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed and the rotary blade support holder 8 passes through the fixed blade 11. In the gap between the portion 8e and the flank 11d including the blade portion 11a of the fixed blade 11, the object W to be crushed is dragged by the protruding portion 8e of the rotating blade support holder 8 that rotates. In addition to the shearing force on the object W to be crushed by the relative movement of the rotary blade 7 with respect to the fixed blade 11, the clearance including the protrusion 8 e of the rotary blade support holder 8 and the blade portion 11 a of the fixed blade 11 held at a constant interval. A synergistic effect of the tensile force on the object to be crushed W that drags the object to be crushed in the gap with the surface 11d is exhibited. Thereby, the crushing efficiency of the to-be-crushed object W improves.
In the conventional uniaxial shearing crusher 101 shown in FIGS. 22 to 28, when the blade base 107ab of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110, FIG. As shown, there is a large gap A between the shoulder 108c of the rotary blade support holder 108 and the flank 111d including the blade 111a of the fixed blade 111.

また、本実施形態に係る一軸剪断式破砕機１にあっては、回転刃支持ホルダ８において、回転刃収容凹部８ｂの回転方向後側に形成されたＶ字形突起部８ｃの頂線８ｈを含む外形形状を、回転刃７の刃部７ａと対向する固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間の隙間が回転刃支持ホルダ８の回転方向に沿って一定間隔に保持されるように形成した。このため、回転刃７と固定刃１１とが協働して被破砕物Ｗを破砕し、回転刃支持ホルダ８が固定刃１１を通過する際に、回転刃支持ホルダ８のＶ字状突起部８ｃの外形と固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間の隙間を一定にすることができる。これにより、被破砕物Ｗが、当該隙間からすり抜けるのを防止し、被破砕物Ｗの破砕効率を一層向上することができる。回転刃７と固定刃１１とが協働して被破砕物Ｗを破砕し、回転刃支持ホルダ８が固定刃１１を通過する際に、一定間隔に保持されているＶ字状突起部８ｃの外形と固定刃１１の刃部１１ａを含む逃げ面１１ｄとの隙間においても、被破砕物Ｗは、回転する回転刃支持ホルダ８のＶ字状突起部８ｃに引きずられる。回転刃７の固定刃１１に対する相対移動による被破砕物Ｗに対する剪断力に加えて、一定間隔に保持されている回転刃支持ホルダ８のＶ字状突起部８ｃの外形と固定刃１１の刃部１１ａを含む逃げ面１１ｄとの隙間において被破砕物Ｗを引きずる被破砕物Ｗに対する引張力の相乗効果が発揮される。これにより、被破砕物Ｗの破砕効率が向上する。   Further, in the uniaxial shearing crusher 1 according to the present embodiment, the rotary blade support holder 8 includes the top line 8h of the V-shaped protrusion 8c formed on the rear side in the rotation direction of the rotary blade housing recess 8b. The outer shape of the clearance between the blade 7a of the rotary blade 7 and the flank 11d including the blade 11a of the fixed blade 11 facing the blade 7a is maintained at regular intervals along the rotational direction of the rotary blade support holder 8. Formed. For this reason, when the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed, and the rotary blade support holder 8 passes through the fixed blade 11, the V-shaped protrusion of the rotary blade support holder 8. The gap between the outer shape of 8c and the flank 11d including the blade portion 11a of the fixed blade 11 can be made constant. Thereby, it can prevent that the to-be-crushed object W slips through the said clearance gap, and can further improve the crushing efficiency of the to-be-crushed object W. When the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed, and the rotary blade support holder 8 passes through the fixed blade 11, the V-shaped projections 8c that are held at regular intervals. Even in the gap between the outer shape and the flank 11 d including the blade portion 11 a of the fixed blade 11, the object to be crushed W is dragged by the V-shaped protrusion 8 c of the rotating blade support holder 8 that rotates. In addition to the shearing force on the object W to be crushed by the relative movement of the rotary blade 7 with respect to the fixed blade 11, the outer shape of the V-shaped protrusion 8 c of the rotary blade support holder 8 held at a constant interval and the blade portion of the fixed blade 11. The synergistic effect of the tensile force with respect to the material to be crushed W that drags the material to be crushed W in the gap with the flank 11d including 11a is exhibited. Thereby, the crushing efficiency of the to-be-crushed object W improves.

また、本実施形態に係る一軸剪断式破砕機１にあっては、回転刃７の刃部７ａと対向する固定刃１１の刃部１１ａの先端に、回転刃７の刃部７ａの刃元７ａｂとの間の隙間を回転刃７の回転方向に沿って一定間隔に保持する先鋭部１１ｃを設けた。このため、回転刃と固定刃とが協働して被破砕物を破砕し、回転刃支持ホルダ８が固定刃１１を通過する際に、回転刃７の刃部７ａの刃元７ａｂと固定刃１１の刃部１１ａの先端に設けた先鋭部１１ｃとの間の隙間を一定間隔に保持することができる。これにより、被破砕物Ｗが、固定刃１１の刃部１１ａの先端と回転刃７との間の隙間からすり抜けるのを防止し、被破砕物Ｗの破砕効率を一層向上することができる。回転刃７と固定刃１１とが協働して被破砕物Ｗを破砕する際に、一定間隔に保持されている回転刃７の刃部７ａの刃元７ａｂと固定刃１１の先鋭部１１ｃとの隙間においても、被破砕物Ｗは、回転する回転刃７の刃部７ａに引きずられる。回転刃７の固定刃１１に対する相対移動による被破砕物Ｗに対する剪断力に加えて、一定間隔に保持されている回転刃７の刃部７ａの刃元７ａｂと固定刃１１の先鋭部１１ｃとの隙間において被破砕物Ｗを引きずる被破砕物Ｗに対する引張力の相乗効果が発揮される。これにより、被破砕物Ｗの破砕効率が向上する。   Further, in the uniaxial shearing crusher 1 according to the present embodiment, the blade base 7ab of the blade portion 7a of the rotary blade 7 is provided at the tip of the blade portion 11a of the fixed blade 11 facing the blade portion 7a of the rotary blade 7. A sharpened portion 11c is provided to hold the gap between the two at a constant interval along the rotation direction of the rotary blade 7. For this reason, when the rotary blade and the fixed blade cooperate to crush the object to be crushed and the rotary blade support holder 8 passes through the fixed blade 11, the blade base 7ab of the blade portion 7a of the rotary blade 7 and the fixed blade It is possible to maintain a gap between the 11 blade portions 11a and the sharpened portion 11c provided at the tip of the blade portion 11a at a constant interval. Thereby, it can prevent that the to-be-crushed object W slips through the clearance gap between the front-end | tip of the blade part 11a of the fixed blade 11, and the rotary blade 7, and can improve the crushing efficiency of the to-be-crushed object W further. When the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed, the blade base 7ab of the blade portion 7a of the rotary blade 7 and the sharpened portion 11c of the fixed blade 11 that are held at regular intervals. Even in the gap, the object to be crushed W is dragged by the blade portion 7a of the rotating blade 7 that rotates. In addition to the shearing force on the object W to be crushed by the relative movement of the rotary blade 7 with respect to the fixed blade 11, the cutting edge 7 ab of the blade portion 7 a of the rotary blade 7 and the sharpened portion 11 c of the fixed blade 11 held at regular intervals. The synergistic effect of the tensile force with respect to the material to be crushed W that drags the material to be crushed W in the gap is exhibited. Thereby, the crushing efficiency of the to-be-crushed object W improves.

なお、図２２乃至図２８に示した従来の一軸剪断式破砕機１０１にあっては、固定刃１１１の刃部１１１ａの先端が平坦面１１１ｃに形成されている。このため、回転刃１０７の刃部１０７ａの刃元１０７ａｂが固定刃１１０のすくい面１１１ｂ上にきたときから回転刃１０７がさらに回転すると、当該回転刃１０７の刃部１０７ａの刃元１０７ａｂと固定刃１１１の刃部１１１ａの平坦面１１１ｃとの間の隙間は、徐々に大きくなってしまっていた。   In the conventional uniaxial shear crusher 101 shown in FIGS. 22 to 28, the tip of the blade portion 111a of the fixed blade 111 is formed on the flat surface 111c. For this reason, when the rotary blade 107 further rotates from the time when the blade base 107ab of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110, the blade base 107ab of the blade portion 107a of the rotary blade 107 and the fixed blade The gap between the 111 blade portion 111a and the flat surface 111c gradually increased.

更に、本実施形態に係る一軸剪断式破砕機１にあっては、回転刃７の刃部７ａの刃元７ａｂ側に位置する回転刃支持ホルダ８の肩部８ｄに、固定刃１１の先鋭部１１ｃとの間の隙間を回転支持ホルダ８の回転方向に沿って一定間隔に保持する溝８ｆを形成した。このため、回転刃７と固定刃１１とが協働して被破砕物Ｗを破砕し、回転刃支持ホルダ８が固定刃１１を通過する際に、回転刃７の刃部７ａの刃元７ａｂ側に位置する回転刃支持ホルダ８の肩部８ｄに形成された溝８ｆと固定刃１１の先鋭部１１ｃとの間の隙間を一定間隔に保持することができる。これにより、被破砕物Ｗが、当該隙間からすり抜けるのを防止し、被破砕物Ｗの破砕効率を一層向上することができる。回転刃７と固定刃１１とが協働して被破砕物Ｗを破砕し、回転刃支持ホルダ８が固定刃１１を通過する際に、一定間隔に保持されている回転刃支持ホルダ８の肩部８ｄに形成された溝８ｆと固定刃１１の先鋭部１１ｃとの隙間においても、被破砕物Ｗは、回転する回転刃支持ホルダ８に形成された溝８ｆに引きずられる。回転刃７の固定刃１１に対する相対移動による被破砕物Ｗに対する剪断力に加えて、一定間隔に保持されている回転刃支持ホルダ８の肩部８ｄに形成された溝８ｆと固定刃１１の先鋭部１１ｃとの隙間において被破砕物Ｗを引きずる被破砕物Ｗに対する引張力の相乗効果が発揮される。これにより、被破砕物Ｗの破砕効率が向上する。   Furthermore, in the uniaxial shearing crusher 1 according to the present embodiment, the sharpened portion of the fixed blade 11 is placed on the shoulder portion 8d of the rotary blade support holder 8 located on the blade base 7ab side of the blade portion 7a of the rotary blade 7. Grooves 8f that hold the gaps between the rotating support holder 8 at a constant interval along the rotation direction of the rotation support holder 8 were formed. For this reason, when the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed and the rotary blade support holder 8 passes through the fixed blade 11, the blade base 7ab of the blade portion 7a of the rotary blade 7 is used. A gap between the groove 8f formed in the shoulder portion 8d of the rotary blade support holder 8 positioned on the side and the sharpened portion 11c of the fixed blade 11 can be maintained at a constant interval. Thereby, it can prevent that the to-be-crushed object W slips through the said clearance gap, and can further improve the crushing efficiency of the to-be-crushed object W. When the rotary blade 7 and the fixed blade 11 cooperate to crush the object to be crushed W and the rotary blade support holder 8 passes through the fixed blade 11, the shoulder of the rotary blade support holder 8 held at a constant interval. Even in the gap between the groove 8f formed in the portion 8d and the sharpened portion 11c of the fixed blade 11, the crushed object W is dragged by the groove 8f formed in the rotating rotary blade support holder 8. In addition to the shearing force on the object W to be crushed by the relative movement of the rotary blade 7 with respect to the fixed blade 11, the groove 8 f formed in the shoulder 8 d of the rotary blade support holder 8 held at a constant interval and the sharpness of the fixed blade 11. The synergistic effect of the tensile force with respect to the material to be crushed W that drags the material to be crushed W in the gap with the portion 11c is exhibited. Thereby, the crushing efficiency of the to-be-crushed object W improves.

なお、長期にわたり一軸剪断式破砕機１によって被破砕物Ｗを破砕していると、比較的軟質の炭素鋼等で製造されている回転刃支持ホルダ８は、Ｖ字状突起部８ｃ、溝８ｆや突起部８ｅのところが摩耗してくる。この場合、固定刃１１の刃部１１ａを含む逃げ面１１ｄとＶ字状突起部８ｃとの間の隙間、前記逃げ面１１ｄと溝８ｆとの間の隙間、及び前記逃げ面１１ｄと突起部８ｅとの間の隙間が大きくなってくる。当該隙間が大きくなりすぎると、破砕効率が低下するため、回転刃支持ホルダ８を交換する必要がある。本実施形態に係る一軸剪断式破砕機１においては、初期において前記隙間が比較的小さく一定間隔に保持されているため、回転刃支持ホルダ８の交換スパンを長くすることができる。   Note that when the object to be crushed W is crushed by the uniaxial shear crusher 1 over a long period of time, the rotary blade support holder 8 made of relatively soft carbon steel or the like has a V-shaped protrusion 8c and a groove 8f. And the protruding portion 8e wears out. In this case, the clearance between the flank 11d including the blade portion 11a of the fixed blade 11 and the V-shaped protrusion 8c, the clearance between the flank 11d and the groove 8f, and the clearance 11d and the protrusion 8e. The gap between and becomes larger. If the gap becomes too large, the crushing efficiency is lowered, so that the rotary blade support holder 8 needs to be replaced. In the uniaxial shearing type crusher 1 according to the present embodiment, the gap is relatively small and held at a constant interval in the initial stage, so that the replacement span of the rotary blade support holder 8 can be lengthened.

以上、本発明の実施形態について説明してきたが、本発明はこれに限定されずに種々の変更、改良を行うことができる。
例えば、突起部８ｅの形状は、必ずしも、回転刃７の刃部７ａと対向する固定刃１１の刃部１１ａに隣接する固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間の隙間を、回転刃支持ホルダ８の回転方向に沿って一定間隔に保持するように形成しなくてもよい。
また、回転刃７の刃部７ａと対向する固定刃１１の刃部１１ａを含む逃げ面１１ｄの形状は、必ずしも、回転刃７の刃部７ａとの間の隙間が回転刃７の回転方向に沿って一定間隔に保持されるように形成しなくてもよい。 As mentioned above, although embodiment of this invention has been described, this invention is not limited to this, A various change and improvement can be performed.
For example, the shape of the protruding portion 8e is not necessarily the gap between the flank 11d including the blade portion 11a of the fixed blade 11 adjacent to the blade portion 11a of the fixed blade 11 facing the blade portion 7a of the rotary blade 7. It does not have to be formed so as to be held at regular intervals along the rotation direction of the rotary blade support holder 8.
Further, the shape of the flank 11 d including the blade portion 11 a of the fixed blade 11 facing the blade portion 7 a of the rotary blade 7 is not necessarily limited to the clearance between the blade portion 7 a of the rotary blade 7 and the rotational direction of the rotary blade 7. It is not necessary to form it so that it may be kept at regular intervals along.

また、回転刃７を支持する回転刃支持ホルダ８において、回転刃収容凹部８ｂの回転方向後側にＶ字状突起部８ｃを必ずしも設ける必要はない。また、回転刃支持ホルダ８が固定刃１１を通過できる形状であれば、Ｖ字状突起部８ｃの頂線８ｈを含む外形形状を、必ずしも、固定刃１１の刃部１１ａを含む逃げ面１１ｄとの間の隙間が回転刃支持ホルダ８の回転方向に沿って一定間隔に保持する必要もない。
更に、回転刃支持ホルダ８が固定１１を通過できる形状であれば、回転刃７の刃部７ａの刃元７ａｂ側に位置する回転刃支持ホルダ８の肩部８ｄに、必ずしも、固定刃１１の先鋭部１１ｃとの間の隙間を回転支持ホルダ８の回転方向に沿って回転方向に沿って一定間隔に保持する溝８ｆを形成する必要はない。 Further, in the rotary blade support holder 8 that supports the rotary blade 7, it is not always necessary to provide the V-shaped protrusion 8 c on the rear side in the rotation direction of the rotary blade housing recess 8 b. Further, if the rotary blade support holder 8 has a shape that can pass through the fixed blade 11, the outer shape including the top line 8 h of the V-shaped protrusion 8 c is not necessarily the flank 11 d including the blade portion 11 a of the fixed blade 11. It is not necessary to keep the gap between the two at regular intervals along the rotation direction of the rotary blade support holder 8.
Furthermore, if the rotary blade support holder 8 has a shape that can pass through the fixed 11, the shoulder portion 8 d of the rotary blade support holder 8 positioned on the blade base 7 ab side of the blade portion 7 a of the rotary blade 7 is not necessarily attached to the shoulder portion 8 d. It is not necessary to form the groove 8f that holds the gap between the sharpened portion 11c at a constant interval along the rotation direction of the rotation support holder 8 along the rotation direction.

１ 一軸剪断式破砕機
２ 破砕機体
３ 破砕室
４ 回転軸
５ 回転体
６ 回転刃組立体
７ 回転刃
７ａ 刃部
７ａａ 刃先
７ａｂ 刃元
７ｂ 表面
７ｃ ねじ孔
７ｄ 取付ボルト
７ｅ 取付ボルト
８ 回転刃支持ホルダ
８ａ ホルダ本体
８ｂ 回転刃収容凹部
８ｃ Ｖ字状突起部
８ｄ 肩部
８ｅ 突起部
８ｆ 溝
８ｇ 溝底
８ｈ 頂線
８ｉ 取付孔
８ｊ 取付孔
９ スクリーン板
１０固定刃組立体
１１ 固定刃
１１ａ 刃部
１１ｂ すくい面
１１ｃ 先鋭部
１１ｄ 逃げ面
１１ｅ 長孔
１２ 取付座体
１２ａ 取付凹部
１３ 取付ボルト
１４ 調節ボルト
１５ ナット DESCRIPTION OF SYMBOLS 1 Uniaxial shearing crusher 2 Crushing machine body 3 Crushing chamber 4 Rotating shaft 5 Rotating body 6 Rotating blade assembly 7 Rotating blade 7a Blade part 7aa Blade tip 7ab Blade base 7b Surface 7c Screw hole 7d Mounting bolt 7e Mounting bolt 8 Rotating blade support holder 8a Holder body 8b Recessed blade housing recess 8c V-shaped projection 8d Shoulder 8e Projection 8f Groove 8g Groove bottom 8h Top line 8i Mounting hole 8j Mounting hole 9 Screen plate 10 Fixed blade assembly 11 Fixed blade 11a Blade portion 11b Rake Surface 11c Pointed portion 11d Flank 11e Long hole 12 Mounting seat 12a Mounting recess 13 Mounting bolt 14 Adjustment bolt 15 Nut

Claims (9)

内部に破砕室を形成した破砕機体と、前記破砕室内に回転可能に設けられた回転軸と、該回転軸の外周に前記回転軸とともに回転可能に設けられた回転体と、該回転体の外周に取り付けられた回転刃組立体と、前記破砕室内に設けられた固定刃とを備え、前記回転刃組立体が、前記固定刃と協働して被破砕物を破砕する回転刃と、該回転刃を支持する回転刃支持ホルダとを備え、前記回転刃の刃部が略Ｖ字状をなして隣り合う二つの直線状の稜線からなり、前記固定刃の刃部が前記回転刃の刃部としての二つの直線状の稜線に対向する略Ｖ字状をなして隣り合う二つの稜線からなると共に、前記固定刃の刃部を並列に複数並べて形成した一軸剪断式破砕機であって、
前記回転刃の刃部と対向する前記固定刃の刃部の先端に先鋭部を設け、
該先鋭部を、前記回転刃の刃部の刃元との間の隙間を、前記回転刃の回転方向に沿って一定間隔に保持するように形成したことを特徴とする一軸剪断式破砕機。 A crushing machine body having a crushing chamber formed therein, a rotating shaft rotatably provided in the crushing chamber, a rotating body rotatably provided with the rotating shaft on an outer periphery of the rotating shaft, and an outer periphery of the rotating body A rotary blade assembly attached to the crushing chamber and a fixed blade provided in the crushing chamber, wherein the rotary blade assembly cooperates with the fixed blade to crush the object to be crushed, and the rotation A rotary blade support holder for supporting the blade, wherein the blade portion of the rotary blade is formed in two substantially straight V-shaped ridge lines, and the blade portion of the fixed blade is the blade portion of the rotary blade A uniaxial shearing type crusher formed by arranging a plurality of blade portions of the fixed blade side by side in parallel and comprising two adjacent ridge lines in a substantially V shape opposite to the two linear ridge lines as
A sharpened portion is provided at the tip of the blade portion of the fixed blade facing the blade portion of the rotary blade,
The single-shaft shearing type crusher characterized in that the sharpened portion is formed so as to keep a gap between the blade portion of the rotary blade and the blade base at a constant interval along the rotation direction of the rotary blade. 前記固定刃は、前記固定刃の前記刃部から前記固定刃の板厚方向中央に向かって延びる逃げ面を備え、前記先鋭部は、回転軸側で交わる一対の前記逃げ面の交線に形成され、前記先鋭部は、前記回転刃の刃元の回転軌跡から一定の間隔であることを特徴とする請求項１に記載の一軸剪断式破砕機。The fixed blade includes a flank extending from the blade portion of the fixed blade toward the center in the thickness direction of the fixed blade, and the sharpened portion is formed at a line of intersection of the pair of flank on the rotating shaft side. The uniaxial shearing crusher according to claim 1, wherein the sharpened portion has a constant interval from a rotation trajectory of the blade base of the rotary blade. 前記逃げ面は、前記回転刃の対応する刃部との間の隙間を前記回転刃の回転方向に沿って一定間隔に形成されていることを特徴とする請求項２に記載の一軸剪断式破砕機。3. The uniaxial shearing type crushing according to claim 2, wherein the flank is formed with a gap between a corresponding blade portion of the rotary blade and a constant interval along a rotation direction of the rotary blade. Machine. 前記回転刃の刃部の刃元側に位置する前記回転刃支持ホルダの肩部に突起部を設けたことを特徴とする請求項１〜３のいずれか一項に記載の一軸剪断式破砕機。The uniaxial shear type crusher according to any one of claims 1 to 3, wherein a protrusion is provided on a shoulder portion of the rotary blade support holder located on a blade base side of the blade portion of the rotary blade. . 前記回転刃は、前記回転体の円周方向に沿って複数個配置されることを特徴とする請求項１〜４のいずれか一項に記載の一軸剪断式破砕機。The uniaxial shear type crusher according to any one of claims 1 to 4, wherein a plurality of the rotary blades are arranged along a circumferential direction of the rotary body. 内部に破砕室を形成した破砕機体と、前記破砕室内に回転可能に設けられた回転軸と、該回転軸の外周に前記回転軸とともに回転可能に設けられた回転体と、該回転体の外周に取り付けられた回転刃組立体と、前記破砕室内に設けられた固定刃とを備え、前記回転刃組立体が、前記固定刃と協働して被破砕物を破砕する回転刃と、該回転刃を支持する回転刃支持ホルダとを備え、前記回転刃の刃部が略Ｖ字状をなして隣り合う二つの直線状の稜線からなる一軸剪断式破砕機のための固定刃であって、A crushing machine body having a crushing chamber formed therein, a rotating shaft rotatably provided in the crushing chamber, a rotating body rotatably provided with the rotating shaft on an outer periphery of the rotating shaft, and an outer periphery of the rotating body A rotary blade assembly attached to the crushing chamber and a fixed blade provided in the crushing chamber, wherein the rotary blade assembly cooperates with the fixed blade to crush the object to be crushed, and the rotation A rotary blade support holder that supports the blade, and the blade portion of the rotary blade is a fixed blade for a uniaxial shearing crusher consisting of two linear ridge lines adjacent to each other in a substantially V shape,
前記固定刃は、The fixed blade is
前記回転刃の刃部としての二つの直線状の稜線に対向する略Ｖ字状をなして隣り合う二つの稜線からなる刃部と、A blade portion composed of two ridge lines adjacent to each other in a substantially V shape opposed to two linear ridge lines as the blade portion of the rotary blade;
前記回転刃の刃部と対向する前記固定刃の刃部の先端に先鋭部とを備え、A sharpened portion is provided at the tip of the blade portion of the fixed blade facing the blade portion of the rotary blade,
該先鋭部と前記回転刃の刃部の刃元との間の隙間が、前記回転刃の回転方向に沿って一定間隔に保持されるように前記粉砕室内に固定されることを特徴とする一軸剪断式破砕機のための固定刃。A uniaxial shaft characterized in that a gap between the sharpened portion and a blade base of the blade portion of the rotary blade is fixed in the grinding chamber so as to be held at a constant interval along the rotation direction of the rotary blade. Fixed blade for shear type crusher. 前記固定刃の刃部から前記固定刃の板厚方向中央に向かって延びる逃げ面を備え、前記先鋭部は、回転軸側で交わる一対の前記逃げ面の交線に形成され、前記一軸剪断式破砕機に取り付けられた場合に、前記先鋭部は、前記回転刃の刃元の回転軌跡から一定の間隔となることを特徴とする請求項６に記載の一軸剪断式破砕機のための固定刃。A flank extending from the blade portion of the fixed blade toward the center of the plate thickness direction of the fixed blade is provided, and the sharpened portion is formed at a line of intersection of the pair of flank on the rotating shaft side, and the uniaxial shear type The fixed blade for a uniaxial shear type crusher according to claim 6, wherein, when attached to a crusher, the sharpened portion has a constant interval from a rotation trajectory of a blade base of the rotary blade. . 前記一軸剪断式破砕機に取り付けられた場合に、前記逃げ面は、前記回転刃の対応する刃部との間の隙間を前記回転刃の回転方向に沿って一定間隔に形成されていることを特徴とする請求項７に記載の一軸剪断式破砕機のための固定刃。When attached to the uniaxial shearing type crusher, the clearance surface is formed at regular intervals along the rotation direction of the rotary blade with a clearance from the corresponding blade portion of the rotary blade. A fixed blade for a single-shaft shearing crusher according to claim 7. 内部に破砕室を形成した破砕機体と、前記破砕室内に回転可能に設けられた回転軸と、該回転軸の外周に前記回転軸とともに回転可能に設けられた回転体と、該回転体の外周に取り付けられた回転刃組立体と、前記破砕室内に設けられた固定刃とを備え、前記回転刃組立体が、前記固定刃と協働して被破砕物を破砕する回転刃と、該回転刃を支持する回転刃支持ホルダとを備え、前記回転刃の刃部が略Ｖ字状をなして隣り合う二つの直線状の稜線からなり、前記固定刃の刃部が前記回転刃の刃部としての二つの直線状の稜線に対向する略Ｖ字状をなして隣り合う二つの稜線からなると共に、前記固定刃の刃部を並列に複数並べて形成した一軸剪断式破砕機のための回転刃支持ホルダであって、A crushing machine body having a crushing chamber formed therein, a rotating shaft rotatably provided in the crushing chamber, a rotating body rotatably provided with the rotating shaft on an outer periphery of the rotating shaft, and an outer periphery of the rotating body A rotary blade assembly attached to the crushing chamber and a fixed blade provided in the crushing chamber, wherein the rotary blade assembly cooperates with the fixed blade to crush the object to be crushed, and the rotation A rotary blade support holder for supporting the blade, wherein the blade portion of the rotary blade is formed in two substantially straight V-shaped ridge lines, and the blade portion of the fixed blade is the blade portion of the rotary blade Rotating blade for a uniaxial shearing type crusher comprising two ridge lines adjacent to each other in a substantially V shape facing two linear ridge lines, and a plurality of blade portions of the fixed blades arranged in parallel A support holder,
前記回転刃の刃部と対向する前記固定刃の刃部の先端に先鋭部を設け、該先鋭部を、前記回転刃の刃部の刃元との間の隙間を、前記回転刃の回転方向に沿って一定間隔に保持するように形成され、A sharpened portion is provided at the tip of the blade portion of the fixed blade facing the blade portion of the rotary blade, and the sharpened portion is separated from the blade base of the blade portion of the rotary blade by the rotation direction of the rotary blade. Is formed to hold at regular intervals along the
前記回転刃支持ホルダは、前記回転刃の刃部の刃元側に位置する肩部に突起部を備えたことを特徴とする一軸剪断式破砕機のための回転刃支持ホルダ。The rotary blade support holder for a uniaxial shearing type crusher, wherein the rotary blade support holder includes a protrusion on a shoulder portion located on a blade base side of the blade portion of the rotary blade.
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