JPH0372121A - Device for attaching/detaching working tool of boom type working machine - Google Patents
Device for attaching/detaching working tool of boom type working machineInfo
- Publication number
- JPH0372121A JPH0372121A JP20907389A JP20907389A JPH0372121A JP H0372121 A JPH0372121 A JP H0372121A JP 20907389 A JP20907389 A JP 20907389A JP 20907389 A JP20907389 A JP 20907389A JP H0372121 A JPH0372121 A JP H0372121A
- Authority
- JP
- Japan
- Prior art keywords
- connecting shaft
- boom
- fitted
- fixing pin
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008602 contraction Effects 0.000 claims description 3
- 230000037431 insertion Effects 0.000 description 9
- 238000003780 insertion Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3627—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a longitudinal locking element
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3672—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat where disengagement is effected by a mechanical lever or handle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Shovels (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、フロントローダ等のブーム式作業機の作業具
着脱装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a work implement attachment/detachment device for a boom type work machine such as a front loader.
(従来の技術)
従来、トラクタ等の走行車体に装着されるブーム式作業
機として例えばフロントローダがあり、該フロントロー
ダは、トラクタの車体に立設される左右1対のマストと
、マストの上端部に枢支連結された左右1対のブームと
、両ブームの先端部に連結された作業具としてのパケッ
トとを備え、ブームとマスト間にはブームを上下揺動さ
せるブームシリンダが設けられ、ブームとパケット間に
はパケットを回動操作するためのパケットシリンダが設
けられている。(Prior Art) Conventionally, there is a front loader, for example, as a boom-type working machine mounted on a traveling vehicle body such as a tractor. It is equipped with a pair of left and right booms that are pivotally connected to the top and a packet serving as a working tool that is connected to the tips of both booms, and a boom cylinder that swings the boom up and down is provided between the boom and the mast. A packet cylinder for rotating the packet is provided between the boom and the packet.
パケットの背面側には左右1対の取付ブラケツトが設け
られており、各取付ブラケツトは左右l対の連結板を備
えている。左右の連結板には夫々上下1対のピン挿通孔
が形成されており、再連結板間にパケットシリンダの端
部及びブームの先端部が挿入され、上側の各ピン挿通孔
及びパケットシリンダの端部を貫通状として上抜止ピン
が着脱自在に装着されると共に、下側の各ピン挿通孔及
びブーム先端部を貫通状として下抜止ピンが着脱自在に
装着されることにより、パケットが着脱自在に装着され
る構造とされていた。例えば実開昭60−87250号
に開示の如くである。A pair of left and right mounting brackets are provided on the back side of the packet, and each mounting bracket is provided with a pair of left and right connecting plates. A pair of upper and lower pin insertion holes are formed in each of the left and right connecting plates, and the end of the packet cylinder and the tip of the boom are inserted between the reconnecting plates, and each upper pin insertion hole and the end of the packet cylinder are inserted between the reconnecting plates. The packet can be attached and detached by making the upper stop pin penetrating through the lower part and removably attaching it, and by making the lower pin insertion hole and the boom tip part pass through and attaching and detaching the lower retaining pin. It was designed to be installed. For example, it is disclosed in Japanese Utility Model Application No. 87250/1983.
(発明が解決しようとする課題)
しかしながら、上記のパケット着脱構造によれば、パケ
ットの交換やフォーク等の他の作業具に交換する際、左
右1対で、かつ上下1対の計4本の抜止ピンを取外す必
要があり、また取付ける際にはシリンダの端部と連結板
の各ピン挿通孔、及びブームの先端部と連結板の各ピン
挿通孔を夫々計4か所で個々に合致させて抜止ピンを装
着する必要があり9、着脱作業が面倒であった。(Problem to be Solved by the Invention) However, according to the above-mentioned packet attachment/detachment structure, when replacing the packet or replacing it with another work tool such as a fork, a total of four It is necessary to remove the retaining pin, and when installing it, match the end of the cylinder with each pin insertion hole of the connecting plate, and the tip of the boom with each pin insertion hole of the connecting plate at a total of 4 locations. It was necessary to attach a stopper pin9, making attachment and detachment work troublesome.
そこで、本発明は上記問題点に鑑み、パケット等の作業
具の着脱作業を容易化したものを提供することを目的と
する。SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a device that facilitates the attachment and detachment of work tools such as packets.
(課題を解決するための手段〉
その技術的手段は、走行車体側に、ブームシリンダによ
り上下揺動自在に左右1対のブームが支持され、各ブー
ムに作業具シリンダの一端部が夫々枢支されると共に、
該シリンダの他端部及びブームの先端部が、作業具背面
側に設けられた左右1対の取付ブラケフトに夫々上下に
離間して着脱自在に連結され、作業具シリンダの伸縮に
より作業具が回動自在とされてなるものにおいて、各ブ
ームの先端部と各作業具シリンダの前記他端部が夫々、
リンク板で連結されると共に、ブームの先端部及び作業
具シリンダの他端部に左右方向両側に突出する連結軸部
が設けられ、上側の連結軸部は左右一体とされ、各取付
ブラケットは夫々左右1対の連結板を備え、各連結板の
上部には、上側の連結軸部を上方に案内する後方開放状
のガイド部と、該ガイド部上端に位置して連結軸部が下
方より嵌脱自在に嵌合される嵌合凹部とを有する土俵合
部が設けられ、各連結板の下部には、前記嵌合凹部と連
結軸部との嵌合状態で下側の連結軸部が後方より嵌脱自
在に嵌合される下嵌合部が設けられ、各連結軸部と各嵌
合部との嵌合状態で、リンク仮に設けられた保合部に係
脱自在に係合する固定ピンが取付ブラケットに軸心方向
移動自在に設けられ、固定ピンを係合方向に付勢する付
勢バネが設けられると共に、固定ピンを付勢バネに抗し
て前記係合位置から退避した連結準備位置で係止する係
止部が設けられ、各連結軸部と各嵌合部との嵌合時に、
固定ピンの係止状態を解除する解除操作部がリンク板に
設けられてなる点にある。(Means for solving the problem) The technical means is that a pair of left and right booms are supported on the traveling vehicle body side by boom cylinders so as to be able to swing up and down, and one end of a work tool cylinder is pivotally supported on each boom. Along with being
The other end of the cylinder and the tip of the boom are removably connected to a pair of left and right mounting brackets provided on the back side of the work implement, separated vertically, and the work implement is rotated by expansion and contraction of the work implement cylinder. In a movable device, the tip of each boom and the other end of each work implement cylinder are each
In addition to being connected by a link plate, a connecting shaft portion is provided at the tip of the boom and the other end of the work implement cylinder that protrudes to both sides in the left and right direction, and the upper connecting shaft portion is integrated on the left and right sides, and each mounting bracket is It is equipped with a pair of left and right connecting plates, and the upper part of each connecting plate has a rear-open guide part that guides the upper connecting shaft part upward, and a guide part that is located at the upper end of the guide part and into which the connecting shaft part is fitted from below. A dohyo mating part having a fitting recess that can be removably fitted is provided at the lower part of each connecting plate, and the lower connecting shaft part is disposed rearwardly when the fitting recess and the connecting shaft part are fitted together. A lower fitting part is provided which is removably fitted to the lower fitting part, and when each connecting shaft part and each fitting part are fitted, the fixing part is removably engaged with a temporarily provided retaining part of the link. A connection in which a pin is provided on a mounting bracket so as to be movable in an axial direction, a biasing spring is provided for biasing the fixed pin in the engagement direction, and the fixed pin is retracted from the engagement position against the biasing spring. A locking part that locks in the ready position is provided, and when each connecting shaft part and each fitting part are fitted,
A release operation part for releasing the locking state of the fixing pin is provided on the link plate.
(作 用)
本発明によれば、作業具13を取外す場合には、ブーム
9を下げて地上に作業具13を下ろし、その状態で、固
定ピン45を係合部46から離脱させ、下嵌合部42よ
り下側の連結軸部30を離脱させ、さらに土俵合部41
より上側の連結軸部31を離脱させればよい。(Function) According to the present invention, when removing the working tool 13, the boom 9 is lowered to lower the working tool 13 to the ground, and in this state, the fixing pin 45 is disengaged from the engaging portion 46, and the lower fitting is performed. The connecting shaft portion 30 below the joining portion 42 is removed, and the dohyo joining portion 41 is removed.
It is only necessary to remove the upper connecting shaft portion 31.
次に作業具13を取付ける場合には、固定ピン45を付
勢バネ54の付勢力に抗して連結準備位置に退避させて
係止部56に係止させ、上側の連結軸部31を土俵合部
41のガイド部39に当て、ガイド部39の案内の下、
嵌合凹部40に嵌合させ、その後、下嵌合部42に下側
の連結軸部30を嵌合させれば、固定ピン45の係止部
56に対する係止状態が解除操作部63によって解除さ
れ、付勢バネ54の付勢力により、固定ピン45が軸心
方向に移動されて保合部46に係脱自在に自動的に係合
し、ロック状態が得られる。Next, when attaching the work tool 13, the fixing pin 45 is retracted to the connection preparation position against the urging force of the urging spring 54 and is locked in the locking part 56, and the upper connecting shaft part 31 is fixed to the ring. Place it on the guide part 39 of the joining part 41, and under the guidance of the guide part 39,
By fitting the fixing pin 45 into the fitting recess 40 and then fitting the lower connecting shaft portion 30 into the lower fitting portion 42, the locking state of the fixing pin 45 with respect to the locking portion 56 is released by the release operation portion 63. The fixing pin 45 is moved in the axial direction by the biasing force of the biasing spring 54 and automatically engages with the retaining portion 46 in a detachable manner, thereby obtaining a locked state.
この着脱作業時において、上側の連結軸部31が左右一
体とされているため、左右のブーム9やリンク板24等
が同期して動き、着脱作業が円滑に行なえる。During this attachment/detachment operation, since the upper connecting shaft portions 31 are integrated on the left and right sides, the left and right booms 9, link plates 24, etc. move synchronously, and the attachment/detachment operation can be performed smoothly.
(実施例〉
以下、本発明の実施例を図面に基づいて説明すると、第
1図乃至第6図において、1はトラクタの車体で、前車
軸受台2、エンジン3、ミッションケース4等を剛結合
して構成され、エンジン3はボンネット5で被覆されて
いる。(Embodiment) Hereinafter, embodiments of the present invention will be described based on the drawings. In Figs. The engine 3 is covered with a bonnet 5.
8はブーム式作業機としてのフロントローダで、車体1
のボンネット5両側に位置する左右1対のブーム9と、
各ブーム9を枢軸10を介して上下揺動自在に枢支する
左右l対のマストエlと、ブーム9を昇降させるための
左右1対のブームシリンダ12と、ブーム9の前端部に
連結された作業具としてのパケット13と、バケツロ3
を回動させる°ための左右l対の作業具シリンダとして
のパケットシリンダニ4と、マスト1)から前方斜め下
方に突出され、ボンネット5両側に沿って前後方向に設
けられた左右1対のブレイス15とを備えている。また
左右のブレイス15の前端部は連結材16で互いに連結
されている。8 is a front loader as a boom type work machine, and the vehicle body 1
a pair of left and right booms 9 located on both sides of the hood 5;
A pair of left and right mast elements 1 for vertically swingingly supporting each boom 9 via a pivot 10, a pair of left and right boom cylinders 12 for raising and lowering the boom 9, and a pair of left and right boom cylinders 12 connected to the front end of the boom 9. Packet 13 as a work tool and bucket bucket 3
A pair of left and right packet cylinder cylinders 4 serve as working tool cylinders for rotating the hood, and a pair of left and right braces protrude diagonally downward from the mast 1) and are provided in the front-rear direction along both sides of the bonnet 5. 15. Further, the front end portions of the left and right braces 15 are connected to each other by a connecting member 16.
18は取付ブラケットで、トラクタ車体lの前後方向中
途部の左右側部に外側方突出状に設けられており、この
取付ブラケット18にマスト1)の下端部が上方側から
着脱自在にテーパ嵌合され、これら両者にまたがって挿
抜自在に挿通された固定具(図示省略)により着脱自在
に連結固定される。Reference numeral 18 denotes a mounting bracket, which is provided in an outwardly projecting manner on the left and right sides of the tractor body l in the longitudinal direction. and are removably connected and fixed by a fixture (not shown) inserted and removably inserted across both.
ブームシリンダ12はブーム9の下側で、ブーム9とマ
スト1)間に亘って配設され、パケットシリンダ14は
ブーム9の上側で、ブーム9とパケット13間に亘って
配設されている。The boom cylinder 12 is disposed below the boom 9 and between the boom 9 and the mast 1 ), and the packet cylinder 14 is disposed above the boom 9 between the boom 9 and the packet 13 .
ブーム9のピン挿通孔を備えた先端部20とパケットシ
リンダ14のピン挿通孔を備えた前端部21には夫々連
結ピン22.23が貫通状に設けられ、各連結ピン22
.23の両側突出部には夫々リンク板24が嵌装される
と共にカラー26.27が装着され、止め輪28.29
で抜止め保持されており、この両側突出状のカラー26
.27部分が連結軸部30.31を構成している。ここ
に各先端部20と前端部21とは各リンク板24により
互いに所定間隔に保持される。尚、この所定間隔は左右
同一に構成されており、従来と同一間隔とされている。Connecting pins 22 and 23 are provided in a penetrating manner in the tip end 20 of the boom 9 and the front end 21 of the packet cylinder 14 and having the pin insertion hole, respectively.
.. Link plates 24 are fitted to the protruding parts on both sides of 23, and collars 26 and 27 are attached, and retaining rings 28 and 29 are attached.
The collars 26 protruding on both sides are held in place by
.. 27 constitutes a connecting shaft portion 30.31. Here, each tip portion 20 and front end portion 21 are held at a predetermined distance from each other by each link plate 24. Note that this predetermined interval is configured to be the same on the left and right sides, and is the same as the conventional one.
また上側の連結ピン23はバイブ体32の溶接により、
左右一体構造とされている。さらに各リンク板24の前
縁側上部は互いに内向き折曲状とされ、挿入ガイド部3
3を構成している。In addition, the upper connecting pin 23 is welded to the vibe body 32.
The left and right sides are integrated. Furthermore, the upper portions of the front edges of each link plate 24 are bent inwardly, and the insertion guide portion 3
3.
パケット13の背面側には各ブーム9やパケットシリン
ダ14と対応して左右1対の取付ブラケット37が設け
られており、各取付ブラケット37は夫々所定間隔を有
して対向された左右1対の連結板38を備え、各連結板
38の上部には、上側の連結ピン23の各連結軸部31
を上方に案内する後方開放状のガイド部39と、該ガイ
ド部39上端に位置して連結軸部31が下方より嵌脱自
在に嵌合される下向き開放状の嵌合凹部40とを有する
上嵌合部41が設けられている。また各連結板38の下
部には、前記嵌合凹部40と連結軸部31との嵌合状態
で、下側の両側連結軸部30が後方より嵌脱自在に嵌合
される後方開放状の下嵌合部42が設けられている。A pair of left and right mounting brackets 37 are provided on the back side of the packet 13 in correspondence with each boom 9 and packet cylinder 14, and each mounting bracket 37 has a pair of left and right mounting brackets 37 facing each other with a predetermined interval. A connecting plate 38 is provided, and each connecting shaft portion 31 of the upper connecting pin 23 is provided on the upper part of each connecting plate 38.
The upper part has a rear-opening guide part 39 that guides the upper part upward, and a downwardly-opening fitting recess 40 located at the upper end of the guide part 39 and into which the connecting shaft part 31 is removably fitted from below. A fitting portion 41 is provided. Further, the lower part of each connecting plate 38 has a rear open shape into which the lower both side connecting shaft parts 30 are removably fitted from the rear when the fitting recess 40 and the connecting shaft part 31 are fitted together. A lower fitting portion 42 is provided.
パケット13背面と上下の連結ピン22.23間には、
連結軸部30.31と各嵌合部41.42との嵌合状態
でロックすべく、固定装置44が具備されており、該固
定装置44は、取付ブラケット37側に設けられた固定
ピン45と、リンク板24側に設けられた保合部46と
を備えてなる。Between the back of the packet 13 and the upper and lower connecting pins 22 and 23,
A fixing device 44 is provided to lock the connecting shaft portion 30.31 and each fitting portion 41.42 in the fitted state. and a retaining portion 46 provided on the link plate 24 side.
固定ピン45は第1図に示される如く、再連結板38の
上端間に亘って架設された上支持板47及び、再連結板
38の下部間に亘って架設された上下1対の中支持板4
8、下支持板49に夫々形成された嵌通孔50,51.
52間に夫々嵌通状とされ、固定ピン45の中途部に径
方向外方に溶接等により張出状に設けられた1対の係合
羽根53が中支持板48上面に当接状に係止されている
。また上支持板47と係合羽根53間にはコイルバネよ
りなる付勢バネ54が圧縮状に套嵌されており、係合羽
根53を介して固定ピン45を下方に弾発付勢している
。58はバネ受は座金である。固定ピン45の上方突出
端には略90度屈曲状とされた操作部55が備えられて
いる。ここに固定ピン45は操作部55により付勢バネ
54の付勢力に抗して軸心方向、即ちパケット13の背
面に沿って上下方向に操作自在とされる。また上支持板
47と中支持板48間の所定位置−側には、固定ピン4
5の軸心回りの回動操作により一方の係合羽根53が係
止される係止部56が張出状に設けられている。57は
ストッパで係合羽根53に接離自在に当接され、固定ピ
ン45の回動量を規制している。一方、前記保合部46
は、各リンク板24の下部間に亘って架設された連結板
60と、連結板60の前面より前方突出状に設けられた
各連結ピン22.23と各嵌合部41.42との嵌合状
態で、中支持体4日と下支持板49間に位置される突出
板61とを備えてなり、突出板61の固定ピン45対応
位置には固定ピン45が嵌脱自在に嵌通される係合孔6
2が設けられている。また一方のリンク板24には、前
記嵌合状態で、係合羽根53と係止部56との係止状態
を解除すべく、他方の係合羽根53を押動して固定ピン
45を解除方向に回動させる解除操作部63が前方突出
状に設けられている。As shown in FIG. 1, the fixing pin 45 has an upper support plate 47 installed between the upper ends of the reconnection plate 38 and a pair of upper and lower middle supports installed between the lower ends of the reconnection plate 38. Board 4
8. Fitting holes 50, 51 formed in the lower support plate 49, respectively.
A pair of engagement blades 53 are fitted between the fixing pins 45 and protrude outward in the radial direction by welding or the like in the middle of the fixing pin 45, and are in contact with the upper surface of the middle support plate 48. It is locked. Further, a biasing spring 54 made of a coil spring is compressedly fitted between the upper support plate 47 and the engagement blade 53, and resiliently biases the fixing pin 45 downward via the engagement blade 53. . 58, the spring holder is a washer. An operating portion 55 bent approximately 90 degrees is provided at the upwardly projecting end of the fixing pin 45 . Here, the fixing pin 45 is made freely operable in the axial direction, that is, in the vertical direction along the back surface of the packet 13, by the operating portion 55 against the biasing force of the biasing spring 54. Furthermore, a fixing pin 4 is provided at a predetermined position between the upper support plate 47 and the middle support plate 48 on the negative side.
A locking portion 56 is provided in an overhanging manner to lock one of the engagement blades 53 when the blade 5 is rotated about the axis. Reference numeral 57 denotes a stopper that is brought into contact with the engagement blade 53 so as to be able to move toward and away from the engagement blade 53, and regulates the amount of rotation of the fixing pin 45. On the other hand, the retaining portion 46
is a connection plate 60 installed across the lower part of each link plate 24, each connection pin 22.23 provided in a forward protruding shape from the front surface of the connection plate 60, and each fitting part 41.42. In the assembled state, it comprises a protruding plate 61 located between the middle support body 4 and the lower support plate 49, and the fixing pin 45 is removably fitted into the position of the protruding plate 61 corresponding to the fixing pin 45. engagement hole 6
2 is provided. In addition, in one link plate 24, in order to release the locked state between the engaging blade 53 and the locking portion 56 in the above-mentioned fitted state, the other engaging blade 53 is pushed to release the fixing pin 45. A release operation section 63 that is rotated in the direction is provided in a forward-projecting shape.
65は土侵入防止板で、パケット13側からこぼれた土
等が取付ブラケット37内に入らないよう上支持板47
後端縁に上方突出状に設けられている。Reference numeral 65 denotes a soil intrusion prevention plate, which is attached to the upper support plate 47 to prevent soil spilled from the packet 13 side from entering the mounting bracket 37.
It is provided on the rear end edge in an upwardly projecting manner.
本発明の実施例は以上のように構成されており、パケッ
ト13を取外す場合には、操作部55を付勢バネ54に
抗して引き上げ、所定位置で回動させて、係合羽根53
を解除操作部63上に乗せて係止させる。The embodiment of the present invention is configured as described above, and when the packet 13 is to be removed, the operating section 55 is pulled up against the biasing spring 54, rotated at a predetermined position, and the engaging blade 53 is removed.
is placed on the release operation part 63 and locked.
この状態にあっては、固定ピン45は係合部46の係合
孔62より離脱している。そしてパケットシリンダ14
を伸して、車体1を後退させると下級合部42より連結
軸部30が離脱し、さらにブーム9を下げて車体1を後
退させると上級合部41より連結軸部31が離脱する。In this state, the fixing pin 45 is disengaged from the engagement hole 62 of the engagement portion 46. and packet cylinder 14
When the vehicle body 1 is extended and the vehicle body 1 is moved backward, the connecting shaft portion 30 is detached from the lower joining portion 42, and when the boom 9 is further lowered and the vehicle body 1 is moved backward, the connecting shaft portion 31 is removed from the upper joining portion 41.
この際、固定ピン45は付勢バネ54の付勢力により下
方に移動される。At this time, the fixing pin 45 is moved downward by the urging force of the urging spring 54.
次にバケツ)13を取付ける場合には、第6図に示され
る如く、予め固定ピン45を上方に引き上げて係合羽根
53を係止部56に係止させて保合位置から退避した連
結準備位置で保持させておく。そしてブーム9の先端部
20及びパケットシリンダ14の前端部21を下げた状
態で車体1を前進させれば、リンク板24前端部が再連
結板38間に挿入されると共に、各パケットシリンダ1
4の前端部21両側の連結軸部31が上級合部41のガ
イド部39に夫々当接される。このリンク板24の再連
結板38間挿入時において、挿入ガイド部33が設けら
れていることから、再連結板38間に円滑に案内される
。次にブームシリンダ12を伸ばしてブーム9を上昇さ
せれば、連結軸部31が嵌合凹部40に嵌合される。そ
の状態で、パケットシリンダ14を短縮すれば、下側の
連結軸部30が相対的に下級合部42に嵌合された状態
が得られる。Next, when attaching the bucket) 13, as shown in FIG. 6, the fixing pin 45 is pulled upward, the engagement blade 53 is engaged with the locking part 56, and the connection is prepared by retreating from the locking position. Hold it in position. When the vehicle body 1 is moved forward with the tip end 20 of the boom 9 and the front end 21 of the packet cylinder 14 lowered, the front end of the link plate 24 is inserted between the reconnection plates 38, and each packet cylinder 1
The connecting shaft portions 31 on both sides of the front end portion 21 of 4 are brought into contact with the guide portions 39 of the upper joint portion 41, respectively. When the link plate 24 is inserted between the reconnection plates 38, since the insertion guide portion 33 is provided, the link plate 24 is smoothly guided between the reconnection plates 38. Next, when the boom cylinder 12 is extended and the boom 9 is raised, the connecting shaft portion 31 is fitted into the fitting recess 40. In this state, if the packet cylinder 14 is shortened, a state is obtained in which the lower connecting shaft portion 30 is relatively fitted into the lower connecting portion 42.
この際、解除操作部63が係合部m53を押動して固定
ピン45を解除方向に回動操作し、係合羽根53と係止
部56との係止状態が解除され、固定ピン45は付勢バ
ネ54の付勢力で下方に移動され、第1図に示される如
く、固定ピン45が係合部46の係合孔62及び下支持
板49の挿通孔52に亘って嵌通されたロック状態が得
られる。以上のように、固定ピン45のワンタッチ操作
でパケット13の着脱が行なえ、従来の如く、ブームの
先端部やパケットシリンダの前端部を個々に連結して合
計4本の抜止ピンを着脱する構造と比較して着脱作業が
容易となる。At this time, the release operation part 63 pushes the engagement part m53 and rotates the fixing pin 45 in the release direction, and the engagement state between the engagement blade 53 and the engagement part 56 is released, and the fixing pin 45 is moved downward by the urging force of the urging spring 54, and as shown in FIG. A locked state is obtained. As described above, the packet 13 can be attached and detached by one-touch operation of the fixing pin 45, and unlike the conventional structure, the tip of the boom and the front end of the packet cylinder are connected individually and a total of four retaining pins are attached and detached. In comparison, attachment and detachment work is easier.
またブーム9の先端部20とパケットシリンダ14の前
端部21とがリンク板24で所定間隔を有した状態が保
持され、ガイド部39の案内の下、嵌合凹部40と連結
軸部31とが嵌合され、その嵌合状態で下級合部42と
連結軸部30とが嵌合される構造であり、従来の如く、
ブームの先端部やパケットシリンダ・の前端部を個々に
各ピン挿通孔と合致させる場合と比較して、この点から
も着脱作業が容易化される。さらに上側の連結軸部31
が左右一体に構成されているため、各シリンダ12.1
4の伸縮に連動して左右が同期して動き、この点からも
着脱作業が容易、円滑となる。そしてフォーク等のその
他の作業具に同様構造の取付ブラケット37を備えてお
けば、交換作業も容易に行なえる。また固定装置44を
取付ブラケット37のパケット13背面と各連結軸部3
0.31間のデッドスペースを利用して設けた構造であ
り、後方に突出せず、コンパクトに構成でき、再連結板
38で保護された構造となり、損傷防止も図れる利点が
ある。Further, the distal end portion 20 of the boom 9 and the front end portion 21 of the packet cylinder 14 are maintained at a predetermined distance by the link plate 24, and the fitting recess 40 and the connecting shaft portion 31 are connected under the guidance of the guide portion 39. It is a structure in which the lower fitting part 42 and the connecting shaft part 30 are fitted in the fitted state, and as in the conventional case,
This also makes the attachment/detachment work easier compared to the case where the tip of the boom or the front end of the packet cylinder is individually aligned with each pin insertion hole. Further upper connecting shaft portion 31
Since the left and right are integrated, each cylinder 12.1
The left and right sides move synchronously in conjunction with the expansion and contraction of 4, making attachment and detachment easy and smooth. If other working tools such as a fork are provided with a mounting bracket 37 having a similar structure, replacement work can be easily performed. In addition, the fixing device 44 is attached to the back of the packet 13 of the mounting bracket 37 and each connecting shaft portion 3.
This structure is provided by utilizing a dead space of 0.31 mm, does not protrude rearward, can be constructed compactly, and is protected by the reconnection plate 38, which has the advantage of being able to prevent damage.
尚、上記実施例において、上側の連結軸部31がバイブ
体32により互いに連結一体化された構造を示している
が、左右連続状の連結ピンであってもよい。Although the above embodiment shows a structure in which the upper connecting shaft portions 31 are integrally connected to each other by the vibrator body 32, it may be a connecting pin that is continuous on the left and right sides.
(発明の効果)
本発明によれば、各ブームの先端部と各作業具シリンダ
の他端部が夫々、リンク板で連結されると共に、ブーム
の先端部及び作業具シリンダの他端部に左右方向両側に
突出する連結軸部が設けられ、上側の連結軸部は左右一
体とされ、各取付ブラケットは夫々左右1対の連結板を
備え、各連結板の上部には、上側の連結軸部を上方に案
内する後方開放状のガイド部と、該ガイド部上端に位置
して連結軸部が下方より嵌脱自在に嵌合される嵌合凹部
とを有する上嵌合部が設けられ、各連結板の下部には、
前記嵌合凹部と連結軸部との嵌合状態で下側の連結軸部
が後方より嵌脱自在に嵌合される下域合部が設けられ、
各連結軸部と各嵌合部との嵌合状態で、リンク板に設け
られた保合部に係脱自在に係合する固定ピンが取付ブラ
ケットに軸心方向移動自在に設けられ、固定ピンを係合
方向に付勢する付勢バネが設けられると共に、固定ピン
を付勢バネに抗して前記係合位置から退避した連結準備
位置で係止する係止部が設けられ、各連結軸部と各嵌合
部との嵌合時に、固定ピンの係止状態を解除する解除操
作部がリンク板に設けられてなるものであり、固定ピン
の操作によるワンタッチ操作で作業具とブーム側との着
脱作業が容易に行なえ、また各連結軸部と各嵌合部との
嵌合によって位置合せも円滑になされ、さらに上側の連
結軸部が左右一体に構成されているため、左右が同期し
て動き、着脱作業が円滑となる。(Effects of the Invention) According to the present invention, the tip of each boom and the other end of each work implement cylinder are connected by a link plate, and the tip of the boom and the other end of the work implement cylinder are Connecting shaft parts are provided that protrude on both sides in the direction, and the upper connecting shaft part is integrated on the left and right sides, and each mounting bracket is provided with a pair of left and right connecting plates, and the upper connecting shaft part is attached to the top of each connecting plate. An upper fitting part is provided, which has a rear-open guide part that guides the parts upward, and a fitting recess, which is located at the upper end of the guide part and into which the connecting shaft part is removably fitted from below. At the bottom of the connecting plate,
A lower joint portion is provided in which the lower connecting shaft portion is removably fitted from the rear when the fitting recess and the connecting shaft portion are fitted together;
A fixing pin that removably engages with a retaining part provided on the link plate when each connecting shaft part and each fitting part are fitted is provided on the mounting bracket so as to be movable in the axial direction. A biasing spring that biases the fixing pin in the engagement direction is provided, and a locking portion that engages the fixing pin in a connection preparation position retracted from the engagement position against the biasing spring is provided. A release operation part is provided on the link plate to release the locked state of the fixing pin when the part and each fitting part are mated, and a one-touch operation by operating the fixing pin releases the work tool and the boom side. It is easy to attach and detach the connectors, and the alignment is smooth due to the engagement of each connecting shaft with each fitting part.Furthermore, since the upper connecting shaft is constructed as one piece, the left and right sides are synchronized. It moves smoothly, making attachment and detachment work smooth.
図面は本発明の実施例を示し、第1図は要部側断面図、
第2図は第1図■−■線断面矢視図、第3図は第1図■
−■線断面矢視図、第4図は第1図IV−IV線断面矢
視図、第5図は全体側面図、第6図は装着時の要部側面
図である。
1・・・車体、8・・・フロントローダ、9・・・ブー
ム、12・・・ブームシリンダ、13・・・パケット、
14・・・パケットシリンダ、24・・・リンク板、3
0・・・連結軸部、31・・・連結軸部、37・・・取
付ブラケット、38・・・連結板、39・・・ガイド部
、40・・・嵌合凹部、41・・・上嵌合部、42・・
・下域合部、45・・・固定ピン、46・・・係合部、
54・・・付勢バネ、56・・・係止部、63・・・解
除操作部。
特 許 出 願 人 久保田鉄工株式会社−12:The drawings show an embodiment of the present invention, and FIG. 1 is a side sectional view of the main part;
Figure 2 is a cross-sectional view taken along the line ■-■ in Figure 1, and Figure 3 is a cross-sectional view from Figure 1 ■.
4 is a cross-sectional view taken along the line IV--IV in FIG. 1, FIG. 5 is an overall side view, and FIG. 6 is a side view of main parts when installed. 1... Vehicle body, 8... Front loader, 9... Boom, 12... Boom cylinder, 13... Packet,
14... Packet cylinder, 24... Link board, 3
0...Connection shaft part, 31...Connection shaft part, 37...Mounting bracket, 38...Connection plate, 39...Guide part, 40...Fitting recess, 41...Top Fitting portion, 42...
・Lower region joining part, 45...fixing pin, 46...engaging part,
54...Biasing spring, 56...Locking part, 63...Release operation part. Patent applicant: Kubota Iron Works Co., Ltd.-12:
Claims (1)
自在に左右1対のブームが支持され、各ブームに作業具
シリンダの一端部が夫々枢支されると共に、該シリンダ
の他端部及びブームの先端部が、作業具背面側に設けら
れた左右1対の取付ブラケットに夫々上下に離間して着
脱自在に連結され、作業具シリンダの伸縮により作業具
が回動自在とされてなるものにおいて、各ブームの先端
部と各作業具シリンダの前記他端部が夫々、リンク板で
連結されると共に、ブームの先端部及び作業具シリンダ
の他端部に左右方向両側に突出する連結軸部が設けられ
、上側の連結軸部は左右一体とされ、各取付ブラケット
は夫々左右1対の連結板を備え、各連結板の上部には、
上側の連結軸部を上方に案内する後方開放状のガイド部
と、該ガイド部上端に位置して連結軸部が下方より嵌脱
自在に嵌合される嵌合凹部とを有する上嵌合部が設けら
れ、各連結板の下部には、前記嵌合凹部と連結軸部との
嵌合状態で下側の連結軸部が後方より嵌脱自在に嵌合さ
れる下嵌合部が設けられ、各連結軸部と各嵌合部との嵌
合状態で、リンク板に設けられた係合部に係脱自在に係
合する固定ピンが取付ブラケットに軸心方向移動自在に
設けられ、固定ピンを係合方向に付勢する付勢バネが設
けられると共に、固定ピンを付勢バネに抗して前記係合
位置から退避した連結準備位置で係止する係止部が設け
られ、各連結軸部と各嵌合部との嵌合時に、固定ピンの
係止状態を解除する解除操作部がリンク板に設けられて
なることを特徴とするブーム式作業機の作業具着脱装置
。(1) On the traveling vehicle side, the boom cylinder swings up and down,
A pair of left and right booms are freely supported, one end of a work tool cylinder is pivotally supported on each boom, and the other end of the cylinder and the tip of the boom are connected to the left and right booms provided on the back side of the work tool. In a device in which the work implement is removably connected to a pair of mounting brackets, spaced apart vertically from each other, and is rotatable by the expansion and contraction of the work implement cylinder, the tip of each boom and the above-mentioned components of each work implement cylinder are The ends are connected by a link plate, and a connecting shaft portion is provided at the tip of the boom and the other end of the work tool cylinder, protruding to both sides in the left-right direction, and the upper connecting shaft portion is integrated into the left and right sides, Each mounting bracket is equipped with a pair of left and right connecting plates, and on the top of each connecting plate,
an upper fitting section having a rear-open guide section that guides the upper connecting shaft section upward; and a fitting recess that is located at the upper end of the guide section and into which the connecting shaft section is removably fitted from below. A lower fitting part is provided at the lower part of each connecting plate, into which the lower connecting shaft part is removably fitted from the rear when the fitting recess and the connecting shaft part are fitted together. A fixing pin is provided on the mounting bracket so as to be movable in the axial direction, and is movable in the axial direction, and is removably engaged with the engaging part provided on the link plate when each connecting shaft part and each fitting part are in the fitted state. A biasing spring that biases the pin in the engagement direction is provided, and a locking portion that engages the fixing pin in a connection preparation position retracted from the engagement position against the biasing spring is provided, and each connection A work implement attachment/detachment device for a boom-type work machine, characterized in that a link plate is provided with a release operation part for releasing the locking state of a fixing pin when a shaft part and each fitting part are fitted together.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20907389A JPH0372121A (en) | 1989-08-10 | 1989-08-10 | Device for attaching/detaching working tool of boom type working machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20907389A JPH0372121A (en) | 1989-08-10 | 1989-08-10 | Device for attaching/detaching working tool of boom type working machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0372121A true JPH0372121A (en) | 1991-03-27 |
Family
ID=16566809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20907389A Pending JPH0372121A (en) | 1989-08-10 | 1989-08-10 | Device for attaching/detaching working tool of boom type working machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0372121A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2826028A1 (en) * | 2001-06-19 | 2002-12-20 | Klac Industrie | Quick fastener for fixing tool to end of loader arm comprises two parts, one comprising shaft engaging hook forming open bearing, hook has extension piece and clamping part is inserted in space between it and shaft |
ES2192478A1 (en) * | 2002-02-25 | 2003-10-01 | Martinez De Lahidalga Aracama | Method of attachment between the arm and accessories of excavators. |
WO2010008151A3 (en) * | 2008-07-15 | 2010-04-29 | 대호 주식회사 | Loader attachment mounting apparatus for movable work vehicle and loader equipped with said loader attachment mounting apparatus |
-
1989
- 1989-08-10 JP JP20907389A patent/JPH0372121A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2826028A1 (en) * | 2001-06-19 | 2002-12-20 | Klac Industrie | Quick fastener for fixing tool to end of loader arm comprises two parts, one comprising shaft engaging hook forming open bearing, hook has extension piece and clamping part is inserted in space between it and shaft |
WO2002103121A1 (en) * | 2001-06-19 | 2002-12-27 | Klac Industrie | Quick fastener for fixing a tool to the end of the arm of a loader or similar device |
ES2192478A1 (en) * | 2002-02-25 | 2003-10-01 | Martinez De Lahidalga Aracama | Method of attachment between the arm and accessories of excavators. |
WO2010008151A3 (en) * | 2008-07-15 | 2010-04-29 | 대호 주식회사 | Loader attachment mounting apparatus for movable work vehicle and loader equipped with said loader attachment mounting apparatus |
US8790063B2 (en) | 2008-07-15 | 2014-07-29 | Daeho Co., Ltd. | Attachment mounting apparatus for movable work vehicle |
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