JP3751388B2 - Lifting reversing hole forming member of lifting reversing jig - Google Patents

Lifting reversing hole forming member of lifting reversing jig Download PDF

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JP3751388B2
JP3751388B2 JP33382096A JP33382096A JP3751388B2 JP 3751388 B2 JP3751388 B2 JP 3751388B2 JP 33382096 A JP33382096 A JP 33382096A JP 33382096 A JP33382096 A JP 33382096A JP 3751388 B2 JP3751388 B2 JP 3751388B2
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hole forming
hole
opening
mounting piece
lifting
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JPH10166347A (en
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恭司 高見
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恭司 高見
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Description

【０００１】
【発明の属する技術分野】
本発明は、例えば、断面略Ｕ字状をなすコンクリート製Ｕ字溝の両側壁の略重心位置の部分に埋設され、前記コンクリート製Ｕ字溝の吊上げ反転穴を形成するために用いられる吊上げ反転穴形成部材に関するものである。
【０００２】
【従来技術】
従来より近年に至るまで、発明者らは、大型で重量のあるコンクリート製品、特に大型で重量のあるコンクリート製Ｕ字溝を安全かつスムーズにＵ字溝の両側壁２カ所で吊り上げ、所定の場所まで移動し、そして表向きに反転させる吊上げ反転治具並びに当該吊上げ反転治具を差し込めるよう両側壁略重心位置に吊上げ反転穴を形成したコンクリート製Ｕ字溝等を開発し、製造してきた。
【０００３】
そして、本件発明者らがなしたこの様な一連の発明群によって、従来のコンクリート製Ｕ字溝の敷設作業は飛躍的な発展をとげ、本件発明者らが開発したＦＧ式吊上げ反転治具並びにＦＧ式コンクリート製品は建設土木業者及び作業者にとって欠かせぬものとなった（図４乃至図７参照）。
【０００４】
【発明が解決しようとする課題】
本件発明はかかる従来からなされている本件発明者の一連の発明群の改良に係るもので、吊上げ反転穴付きＵ字溝を製造する際に、コンクリートモルタルがＵ字溝の吊上げ反転穴に入り込まず、また、製造されたＵ字溝を吊上げ反転治具で吊り上げる作業がスムーズに確実に行え、かつＵ字溝の敷設作業中においても吊上げ反転穴に挿入した吊上げ反転棒が不意に抜出することのない吊上げ反転穴形成部材を提供することを目的とするものである。
【０００５】
【課題を解決するための手段】
本発明は、
両側壁略中央に埋設され、コンクリート製品を吊上げて反転しうる吊上げ反転穴を形成する吊上げ反転穴形成部材であり、
該吊上げ反転穴形成部材は、円筒パイプ状をなす穴形成本体と、穴形成本体の略中間部で外側に向かって略円盤状に張り出すアンカー部材と、
前記穴形成本体の両端に嵌め込まれる可撓性を有するキャップ部材と、
を有してなり、
一方側に嵌め込まれるキャップ部材は、穴形成本体の端部外周に添着する輪状の装着片と、該装着片の端部から穴形成本体の一方側開口を閉塞するよう円状に張り出すキャップ部とを備え、かつ、前記キャップ部には、吊上げ反転穴となる穴形成本体の開口に差し込まれる吊り上げ反転棒の径より狭小の径とした開口が切り取り形成可能とされ、
他方側に嵌め込まれるキャップ部材は、穴形成本体の他方側開口端部内周面に添着して該開口端部内側に係止する内側装着片を有し、かつ内側装着片から穴形成本体の他方側開口を閉塞するよう円状に張り出すキャップ部とを備えて形成され、吊上げ反転穴となる穴形成本体の開口に差し込まれる吊り上げ反転棒の先端部が前記内側装着片で係止可能とされたことを特徴とし、
または、
両側壁略中央に埋設され、コンクリート製Ｕ字溝を吊上げて反転しうる吊上げ反転穴を形成する吊上げ反転穴形成部材であり、
該吊上げ反転穴形成部材は、円筒パイプ状をなす穴形成本体と、穴形成本体の略中間部で外側に向かって略円盤状に張り出すアンカー部材と、
前記穴形成本体の両端に嵌め込まれる可撓性を有するキャップ部材と、
を有してなり、
一方側に嵌め込まれるキャップ部材は、穴形成本体の端部外周に添着する輪状の装着片と、該装着片の端部から穴形成本体の一方側開口を閉塞するよう円状に張り出すキャップ部とを備え、かつ、前記キャップ部には、吊上げ反転穴となる穴形成本体の開口に差し込まれる吊り上げ反転棒の径より狭小の径とした開口が切り取り形成可能とされ、
他方側に嵌め込まれるキャップ部材は、吊上げ反転穴形成本体の他方側開口端部外周面及び内周面にそれぞれ添着し、該開口端部を挟持する外側装着片と内側装着片とを有し、かつ外側装着片から穴形成本体の他方側開口を閉塞するよう円状に張り出すキャップ部とを備えて形成され、
吊上げ反転穴となる穴形成本体の開口に差し込まれる吊り上げ反転棒の先端部が前記内側装着片で係止可能とされたことを特徴とし、
または、
断面略Ｕ字状をなすコンクリート製Ｕ字溝の両側壁略中央に埋設され、コンクリート製Ｕ字溝を吊上げて反転しうる吊上げ反転穴を形成する吊上げ反転穴形成部材であり、
該吊上げ反転穴形成部材は、円筒パイプ状をなす穴形成本体と、穴形成本体が軸方向に圧縮され、略中間部で外側に向かって前記穴形成本体自体が略円盤状に張り出して形成されたアンカー部材と、
前記穴形成本体の両端に嵌め込まれる可撓性を有するキャップ部材と、
を有してなり、
一方側に嵌め込まれるキャップ部材は、穴形成本体の端部外周に添着する輪状の装着片と、該装着片の端部から穴形成本体の一方側開口を閉塞するよう円状に張り出すキャップ部とを備え、かつ、前記キャップ部には、吊上げ反転穴となる穴形成本体の開口に差し込まれる吊り上げ反転棒の径より狭小の径とした開口が切り取り形成可能とされ、
他方側に嵌め込まれるキャップ部材は、吊上げ反転穴形成本体の他方側開口端部外周面及び内周面にそれぞれ添着し、該開口端部を挟持する外側装着片と内側装着片とを有し、かつ外側装着片から穴形成本体の他方側開口を閉塞するよう円状に張り出すキャップ部とを備えて形成され、
吊上げ反転穴となる穴形成本体の開口に差し込まれる吊り上げ反転棒の先端部が前記内側装着片で係止可能とされたことを特徴とする。
【０００６】
（作用）
本発明では、吊上げ反転穴形成部材における穴形成本体の両端に嵌め込まれる可撓性を有するキャップ部材につき、
一方側に嵌め込まれるキャップ部材は、穴形成本体の端部外周に添着する輪状の装着片と、該装着片の端部から穴形成本体の一方側開口を閉塞するよう円状に張り出すキャップ部とを備えて形成し、かつ、前記キャップ部には、吊上げ反転穴となる穴形成本体の開口に差し込まれる吊り上げ反転棒の径より狭小の径とした開口が切り取り形成可能とされている。
【０００７】
よって、吊上げ反転穴に吊上げ反転棒を差し込む際には狭小な開口のヒレ部が前記吊上げ反転棒を圧接し、もって吊上げ反転棒の不意な抜出を防止できる。
また、他方側に嵌め込まれるキャップ部材には、穴形成本体の他方側開口端部外周面及び内周面にそれぞれ添着し、該開口端部を挟持する外側装着片と内側装着片とを有し、かつ外側装着片から穴形成本体の他方側開口を閉塞するよう円状に張り出すキャップ部とを備えて形成されている。
【０００８】
従って、差し込まれた吊上げ反転棒の先端部が穴形成本体の奥側でさらに、内側装着片で係止されることとなり、前記一方側に嵌め込まれたキャップ部材のヒレ部で吊上げ反転棒の基端部が圧接されることも相俟って、吊上げ反転棒の不意抜出につき、確実に対応することが出来る。
【０００９】
【発明の実施の態様】
以下、本発明を図に示す好適な実施の態様に基づいて説明する。
図７において、符号１はコンクリート製のＵ字溝を示す。
該コンクリート製Ｕ字溝１の両側壁２，２にはその略中央位置に吊上げ反転穴３，３が形成されている。
【００１０】
しかして、当該吊上げ反転穴３は、吊上げ反転穴形成部材４をコンクリート製Ｕ字溝１の側壁２内に埋設することにより形成される（図１参照）。
ここで、図１から理解されるように、吊上げ反転穴形成部材４は、円筒パイプ状をなす穴形成本体５と、穴形成本体５の軸方向略中間位置で外側に略円盤状に張り出すアンカー部材６と、穴形成部材５の両端に嵌め込まれた可撓性部材からなる第１キャップ部材７及び第２キャップ部材８とを有して構成されている。
【００１１】
前記アンカー部材６の構成について本発明では何ら限定されるものではない。
従って円盤状に形成した別部材を穴形成本体５に直角に差し込んで固定し、これによりアンカー部材６を形成しても構わないし、穴形成本体５を軸方向に向かって圧縮させ、略中間部に穴形成本体５自体の肉を外側に略円盤状に張り出させ、もってアンカー部材６としても構わないものである。
【００１２】
次に、第１キャップ部材７は柔軟性を有する可撓性部材、例えばプラスチック部材等で構成されており、穴形成本体５につき、外側の開口、すなわち吊上げ反転棒２３（図２参照）が差し込まれる側の開口に取り付けられるもので、穴形成本体５の端部外周に添着する輪状の装着片９と、該装着片９の端部から穴形成本体５の開口を閉塞するよう円状に張り出すキャップ部１０とを備えて構成されている。
【００１３】
そして、前記キャップ部材１０には、差し込まれる吊上げ反転棒２３の径より小さい径とされた円状の開口２４が穿設出来るようミシン目１２が設けられている。
よって、作業者はそのミシン目１２に沿って打ち抜けば、キャップ部１０に前記吊上げ反転棒２３の径より狭小な円状の開口２４が形成されることとなる。
【００１４】
しかして、このキャップ部１０の狭小開口２４に吊上げ反転棒２３を差し込むと、該吊上げ反転棒２３の外周を前記狭小開口２４の外縁に形成された押圧ヒレ部１１が圧接し、これにより、例えば吊上げ反転作業中の吊上げ反転棒２３の不意抜出を確実阻止することが出来る。
次に第２キャップ部材８につき説明すると、該第２キャップ部材８は穴形成本体５の他方側開口、すなわちコンクリート製Ｕ字溝１の側壁２の内部に埋設される側に取り付けられるものである。
【００１５】
該第２キャップ部材８は、図１、図２から理解されるように穴形成本体５の他方側開口端１５の外周面１３及び内周面１４にそれぞれ添着し、もって他方側開口端１５を挟持する外側装着片１６と内側装着片１７とを有している。
さらに、外側装着片１６の基端部からは穴形成本体５の他方側開口を閉塞するよう円状に張り出すキャップ部１８を有している。
【００１６】
ここで、内側装着片１７であるが、その基端側から先端側に向かって厚みが先細りとなるよう形成しておいても構わない。
この様に形成された第２キャップ部材８は、コンクリート製Ｕ字溝１の内部に埋設され、コンクリート製Ｕ字溝１の製造時にコンクリートが穴形成本体５のパイプ内に浸入するのを防止するものとなる。
【００１７】
そして、吊上げ反転棒２３を差し込んだ際、その先端部は内側装着片１７で圧接され、前記基端部での押圧ヒレ部１１での圧接も相俟って、吊上げ反転棒２３の不意の抜出を確実に阻止することが出来る。
図３に第２キャップ部材８に他の実施例を示す。
この実施例では、内側装着片１７のみを有しており、外部装着片１６を有していない。しかし、外部装着片１６がなくとも充分に他方側開口を塞ぐ機能を果たしうる。
【００１８】
以上において、次に本発明の使用状態につき従来例の図を参照して説明する。
まず、図４乃至図６から理解されるように、外型枠１９と内型枠２０とでコンクリート製Ｕ字溝１形成用の型枠は構成されている。
そして、この外型枠１９の略中央には透孔２１が穿設されており、該透孔２１に支持棒２２を差し込み、その支持棒２２に吊上げ反転穴形成部材４を被嵌させてこれを型枠内にセットする様になっている。
【００１９】
この際、吊上げ反転穴形成部材４の第１キャップ部材７には前記支持棒２２あるいは吊上げ反転棒の径より狭小とされた径の円状をなす開口２４が穿設できるよう切り取り可能なミシン目１２が形成されており、例えば支持棒２２を穴形成本体５に挿入することによりミシン目１２に沿って開口できるようになっている。
【００２０】
しかして、この第１キャップ部材７が、コンクリート製Ｕ字溝１の外側に位置する様、すなわち外型枠１９の内側に接するよう吊上げ反転部材４を支持棒２２に被嵌させる。
すると、第１キャップ部材７のキャップ部１０に形成された開口の押圧ヒレ部１１が前記支持棒２２に圧接し、型枠内にコンクリートを充填する際、吊上げ反転部材４内に前記コンクリートが浸入するのを防止することもできる。
【００２１】
ついで、型枠内にコンクリートを充填して固化させ、コンクリートが固化した後は外型枠１９を脱型する。
そして、その状態から吊上げ反転治具の吊上げ反転棒２３を、製造されたコンクリート製Ｕ字溝１の両側壁に形成された吊上げ反転穴３，３に差し込み、そのまま上方へ吊上げてＵ字溝１を内型枠２０から外す。
【００２２】
そして、製造された多数のＵ字溝１は前記の寝かせられた状態で所定の収納場所に収納される。
ここで、Ｕ字溝１を吊上げて反転させる方法につき説明する。
まず、吊上げ反転棒２３をコンクリート製Ｕ字溝１の両側壁２，２の吊上げ反転穴３，３に挿入する。この際、吊上げ反転穴３には第１キャップ部材７の狭小な開口２４が露出されており、その狭小開口２４に吊上げ反転棒２３を挿入すると、開口２４が狭小であるため、押圧ヒレ部材１１が吊上げ反転棒２３外周に圧接し、摩擦抵抗を生じる。
【００２３】
さらに吊上げ反転棒２３を奥まで挿入すると、その先端部が第２キャップ部材８の内側装着片１７に当たり、吊上げ反転棒２３は強引に引き抜かないと抜けない状態となる。
この様に簡単な操作で、吊上げ反転棒２３の強固な嵌め付けが出来、コンクリート製Ｕ字溝１の吊上げ反転作業を安全かつスムーズに行うことが出来る。
【００２４】
【発明の効果】
本発明は以上の構成よりなる。
そして、本発明によれば、吊上げ反転穴付きＵ字溝を製造する際に、コンクリートモルタルがＵ字溝の吊上げ反転穴に入り込まず、また、製造されたＵ字溝を吊上げ反転治具で吊り上げる作業がスムーズに、かつ確実に行える吊上げ反転穴形成部材を提供できる。
【図面の簡単な説明】
【図１】本発明の一実施例を示す断面図である。
【図２】本発明の使用状態説明図である。
【図３】第２キャップ部材の他の実施例を示す説明図である。
【図４】コンクリート製Ｕ字溝の型枠を示す説明図である。
【図５】コンクリート製Ｕ字溝の作製状態を説明する説明図である。
【図６】型枠の脱型状態を説明する説明図である。
【図７】コンクリート製Ｕ字溝を説明する説明図である。
【符号の説明】
１ コンクリート製Ｕ字溝
２ 側壁
３ 吊上げ反転穴
４ 吊上げ反転穴形成部材
５ 穴形成本体
６ アンカー部材
７ 第１キャップ部材
８ 第２キャップ部材
９ 装着片
１０ キャップ部
１１ 押圧ヒレ部
１２ ミシン目
１３ 外周面
１４ 内周面
１５ 他方側開口端
１６ 外側装着片
１７ 内側装着片
１８ キャップ部
１９ 外型枠
２０ 内型枠
２１ 透孔
２２ 支持棒
２３ 吊上げ反転棒
２４ 狭小開口[0001]
BACKGROUND OF THE INVENTION
The present invention is, for example, a lifting reversal used to form a lifting reversal hole of the concrete U-shaped groove embedded in a portion of a substantially center of gravity on both side walls of a concrete U-shaped groove having a substantially U-shaped cross section. The present invention relates to a hole forming member.
[0002]
[Prior art]
From the past until recently, the inventors have lifted large and heavy concrete products, particularly large and heavy concrete U-grooves at two places on both side walls of the U-groove safely and smoothly. Has been developed and manufactured, such as a lifting reversing jig that moves to the front and reverses upside down, and a concrete U-shaped groove formed with a lifting reversal hole at the center of gravity on both side walls so that the lifting reversing jig can be inserted.
[0003]
And, by such a series of inventions made by the present inventors, the laying work of the conventional concrete U-shaped groove has drastically developed, and the FG type lifting reversing jig developed by the present inventors, FG concrete products have become indispensable for construction engineers and workers (see FIGS. 4 to 7).
[0004]
[Problems to be solved by the invention]
The present invention relates to the improvement of a series of inventions of the present inventors that have been made in the past, and when manufacturing a U-shaped groove with a lifting reversal hole, the concrete mortar does not enter the lifting reversal hole of the U-shaped groove. Also, it is possible to smoothly and reliably lift the manufactured U-shaped groove with the lifting and reversing jig, and the lifting reversing rod inserted into the lifting and reversing hole can be pulled out unexpectedly even during the U-shaped groove laying work. It is an object of the present invention to provide a lifting reversal hole forming member having no gap.
[0005]
[Means for Solving the Problems]
The present invention
It is a lifting reversal hole forming member that is embedded in the center of both side walls and forms a lifting reversal hole that can lift and reverse a concrete product,
The lifting reversal hole forming member includes a hole-forming main body having a cylindrical pipe shape, an anchor member projecting outward in a substantially disk shape at a substantially middle portion of the hole-forming main body,
A flexible cap member fitted to both ends of the hole-forming body;
Having
The cap member fitted on one side includes a ring-shaped mounting piece attached to the outer periphery of the end portion of the hole forming body, and a cap portion projecting in a circular shape so as to close one side opening of the hole forming body from the end portion of the mounting piece And the cap part can be cut and formed with an opening having a diameter narrower than the diameter of the lifting reversal rod inserted into the opening of the hole forming main body to be the lifting reversal hole,
The cap member to be fitted to the other side has an inner mounting piece that is attached to the inner peripheral surface of the other opening end of the hole forming body and is locked to the inner side of the opening end, and from the inner mounting piece to the other of the hole forming main body A cap portion projecting in a circular shape so as to close the side opening, and the tip end portion of the lifting reversal rod inserted into the opening of the hole forming main body serving as the lifting reversal hole can be locked by the inner mounting piece. It is characterized by
Or
It is a lifting reversal hole forming member that is buried in the approximate center of both side walls and that forms a lifting reversal hole that can be reversed by lifting a concrete U-shaped groove,
The lifting reversal hole forming member includes a hole-forming main body having a cylindrical pipe shape, an anchor member projecting outward in a substantially disk shape at a substantially middle portion of the hole-forming main body,
A flexible cap member fitted to both ends of the hole-forming body;
Having
The cap member fitted on one side includes a ring-shaped mounting piece attached to the outer periphery of the end portion of the hole forming body, and a cap portion projecting in a circular shape so as to close one side opening of the hole forming body from the end portion of the mounting piece And the cap part can be cut and formed with an opening having a diameter narrower than the diameter of the lifting reversal rod inserted into the opening of the hole forming main body to be the lifting reversal hole,
The cap member fitted on the other side has an outer mounting piece and an inner mounting piece that are attached to the outer peripheral surface and inner peripheral surface of the other opening end portion of the lifting reversal hole forming body, respectively, and sandwich the opening end portion. And formed with a cap portion projecting in a circular shape so as to close the other side opening of the hole forming body from the outer mounting piece,
The tip of the lifting reversal rod inserted into the opening of the hole forming main body that becomes the lifting reversal hole can be locked with the inner mounting piece,
Or
A lifting reversal hole forming member that is embedded in substantially the center of both side walls of a concrete U-shaped groove having a substantially U-shaped cross section and forms a lifting reversal hole that can be reversed by lifting the concrete U-shaped groove,
The lifting reversal hole forming member is formed by a hole forming main body having a cylindrical pipe shape, a hole forming main body being compressed in the axial direction, and the hole forming main body itself projecting outward in a substantially intermediate portion in a substantially disk shape. Anchor members,
A flexible cap member fitted to both ends of the hole-forming body;
Having
The cap member fitted on one side includes a ring-shaped mounting piece attached to the outer periphery of the end portion of the hole forming body, and a cap portion projecting in a circular shape so as to close one side opening of the hole forming body from the end portion of the mounting piece And the cap part can be cut and formed with an opening having a diameter narrower than the diameter of the lifting reversal rod inserted into the opening of the hole forming main body to be the lifting reversal hole,
The cap member fitted on the other side has an outer mounting piece and an inner mounting piece that are attached to the outer peripheral surface and inner peripheral surface of the other opening end portion of the lifting reversal hole forming body, respectively, and sandwich the opening end portion. And formed with a cap portion projecting in a circular shape so as to close the other side opening of the hole forming body from the outer mounting piece,
The tip of the lifting reversing rod inserted into the opening of the hole forming main body serving as the lifting reversal hole can be locked with the inner mounting piece.
[0006]
(Function)
In the present invention, the flexible cap member fitted into both ends of the hole forming body in the lifting reversal hole forming member,
The cap member fitted on one side includes a ring-shaped mounting piece attached to the outer periphery of the end portion of the hole forming body, and a cap portion projecting in a circular shape so as to close one side opening of the hole forming body from the end portion of the mounting piece In the cap portion, an opening having a diameter narrower than the diameter of the lifting reversal rod inserted into the opening of the hole forming main body serving as the lifting reversal hole can be cut and formed.
[0007]
Therefore, when the lifting reversal rod is inserted into the lifting reversal hole, the fin portion of the narrow opening presses the lifting reversal rod, thereby preventing the lifting reversal rod from being unexpectedly pulled out.
The cap member fitted on the other side has an outer mounting piece and an inner mounting piece that are attached to the outer peripheral surface and inner peripheral surface of the other opening end of the hole forming body, respectively, and sandwich the opening end. And a cap portion protruding in a circular shape so as to close the other side opening of the hole forming body from the outer mounting piece.
[0008]
Therefore, the tip of the inserted lifting reversing rod is further locked by the inner mounting piece on the back side of the hole forming main body, and the base of the lifting reversing rod is held by the fin portion of the cap member fitted on the one side. Combined with the fact that the ends are pressed together, it is possible to reliably cope with the unexpected withdrawal of the lifting reversal rod.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on preferred embodiments shown in the drawings.
In FIG. 7, reference numeral 1 denotes a concrete U-shaped groove.
On both side walls 2 and 2 of the concrete U-shaped groove 1, lifting reversal holes 3 and 3 are formed at substantially the center position.
[0010]
Thus, the lifting reversal hole 3 is formed by embedding the lifting reversal hole forming member 4 in the side wall 2 of the concrete U-shaped groove 1 (see FIG. 1).
Here, as can be understood from FIG. 1, the lifting and reversing hole forming member 4 protrudes outward in a substantially disk shape at a substantially intermediate position in the axial direction of the hole forming main body 5 having a cylindrical pipe shape and the hole forming main body 5. The anchor member 6 includes a first cap member 7 and a second cap member 8 made of a flexible member fitted to both ends of the hole forming member 5.
[0011]
The configuration of the anchor member 6 is not limited at all in the present invention.
Therefore, another member formed in a disk shape may be inserted into the hole forming body 5 at a right angle and fixed to form the anchor member 6, and the hole forming body 5 may be compressed in the axial direction to substantially Further, the hole forming main body 5 itself may be protruded outwardly in a substantially disk shape, so that the anchor member 6 may be used.
[0012]
Next, the first cap member 7 is formed of a flexible member having flexibility, such as a plastic member, and an outer opening, that is, a lifting reversal bar 23 (see FIG. 2) is inserted into the hole forming body 5. A ring-shaped mounting piece 9 attached to the outer periphery of the end portion of the hole forming body 5 and a circular shape so as to close the opening of the hole forming body 5 from the end portion of the mounting piece 9. The cap part 10 to take out is comprised.
[0013]
The cap member 10 is provided with a perforation 12 so that a circular opening 24 having a diameter smaller than the diameter of the lifting reversal rod 23 to be inserted can be formed.
Therefore, when the operator punches along the perforation 12, a circular opening 24 narrower than the diameter of the lifting and reversing rod 23 is formed in the cap portion 10.
[0014]
When the lifting reversal rod 23 is inserted into the narrow opening 24 of the cap portion 10, the pressing fin portion 11 formed on the outer edge of the narrow opening 24 is pressed against the outer periphery of the lifting reversal rod 23. Unintentional removal of the lifting reversal rod 23 during lifting reversal work can be reliably prevented.
Next, the second cap member 8 will be described. The second cap member 8 is attached to the opening on the other side of the hole forming body 5, that is, the side embedded in the side wall 2 of the concrete U-shaped groove 1. .
[0015]
As can be understood from FIGS. 1 and 2, the second cap member 8 is attached to the outer peripheral surface 13 and the inner peripheral surface 14 of the other opening end 15 of the hole forming body 5, respectively, so that the other opening end 15 is formed. The outer mounting piece 16 and the inner mounting piece 17 are sandwiched.
Further, the outer mounting piece 16 has a cap portion 18 that protrudes in a circular shape so as to close the other side opening of the hole forming body 5 from the base end portion.
[0016]
Here, although it is the inner side mounting piece 17, you may form so that thickness may taper off toward the front end side from the base end side.
The second cap member 8 formed in this way is embedded in the concrete U-shaped groove 1 and prevents the concrete from entering the pipe of the hole forming body 5 when the concrete U-shaped groove 1 is manufactured. It will be a thing.
[0017]
When the lifting reversing rod 23 is inserted, the tip end portion thereof is pressed by the inner mounting piece 17, and in combination with the pressing contact at the pressing fin portion 11 at the base end portion, the lifting reversing rod 23 is unexpectedly pulled out. It can be surely prevented from coming out.
FIG. 3 shows another embodiment of the second cap member 8.
In this embodiment, only the inner mounting piece 17 is provided, and the external mounting piece 16 is not provided. However, even if there is no external mounting piece 16, the function of sufficiently closing the other side opening can be achieved.
[0018]
The use state of the present invention will now be described with reference to the drawings of the conventional example.
First, as can be understood from FIGS. 4 to 6, the outer mold frame 19 and the inner mold frame 20 constitute the concrete U-shaped groove 1 forming frame.
A through hole 21 is formed in the approximate center of the outer mold 19, and a support bar 22 is inserted into the through hole 21, and the lifting reversal hole forming member 4 is fitted into the support bar 22. Is set in the formwork.
[0019]
At this time, the first cap member 7 of the lifting reversal hole forming member 4 can be cut so that a circular opening 24 having a diameter narrower than the diameter of the support rod 22 or the lifting reversal rod can be drilled. 12 is formed. For example, the support rod 22 can be opened along the perforation 12 by inserting the support rod 22 into the hole forming body 5.
[0020]
Thus, the lifting reversal member 4 is fitted onto the support rod 22 so that the first cap member 7 is positioned outside the concrete U-shaped groove 1, that is, in contact with the inside of the outer mold frame 19.
Then, the pressing fin portion 11 of the opening formed in the cap portion 10 of the first cap member 7 comes into pressure contact with the support rod 22, and the concrete enters the lifting reversal member 4 when filling the mold into the concrete. Can also be prevented.
[0021]
Next, the mold is filled with concrete and solidified. After the concrete is solidified, the outer mold 19 is removed.
Then, from that state, the lifting reversal rod 23 of the lifting reversing jig is inserted into the lifting reversal holes 3 and 3 formed on both side walls of the manufactured concrete U-shaped groove 1 and lifted upward as it is to form the U-shaped groove 1. Is removed from the inner mold 20.
[0022]
And many manufactured U-shaped groove | channels 1 are accommodated in a predetermined | prescribed storage location in the said laid state.
Here, a method for lifting and reversing the U-shaped groove 1 will be described.
First, the lifting reversal bar 23 is inserted into the lifting reversal holes 3 and 3 of the both side walls 2 and 2 of the concrete U-shaped groove 1. At this time, the narrow opening 24 of the first cap member 7 is exposed in the lifting reversal hole 3, and when the lifting reversal rod 23 is inserted into the narrow opening 24, the opening 24 is narrow, so that the pressing fin member 11 Is brought into pressure contact with the outer periphery of the lifting and reversing rod 23 to generate frictional resistance.
[0023]
When the lifting reversal bar 23 is further inserted to the back, the tip end of the lifting reversal bar 23 comes into contact with the inner mounting piece 17 of the second cap member 8, and the lifting reversal bar 23 cannot be pulled out unless it is pulled out forcibly.
In this way, the lifting reversal rod 23 can be firmly fitted by simple operation, and the lifting reversal operation of the concrete U-shaped groove 1 can be performed safely and smoothly.
[0024]
【The invention's effect】
The present invention has the above configuration.
According to the present invention, when manufacturing the U-shaped groove with the lifting reversal hole, the concrete mortar does not enter the lifting reversal hole of the U-shaped groove, and the manufactured U-shaped groove is lifted by the lifting reversal jig. It is possible to provide a lifting reversal hole forming member that can perform work smoothly and reliably.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of the present invention.
FIG. 2 is an explanatory diagram of a use state of the present invention.
FIG. 3 is an explanatory view showing another embodiment of the second cap member.
FIG. 4 is an explanatory view showing a concrete U-shaped groove form.
FIG. 5 is an explanatory view for explaining a production state of a concrete U-shaped groove.
FIG. 6 is an explanatory diagram for explaining a mold release state of the mold.
FIG. 7 is an explanatory diagram for explaining a concrete U-shaped groove.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Concrete U-shaped groove 2 Side wall 3 Lifting inversion hole 4 Lifting inversion hole forming member 5 Hole formation main body 6 Anchor member 7 First cap member 8 Second cap member 9 Mounting piece 10 Cap part 11 Pressing fin part 12 Perforation 13 Outer circumference Surface 14 Inner peripheral surface 15 Opening end 16 on the other side Outer mounting piece 17 Inner mounting piece 18 Cap portion 19 Outer mold frame 20 Inner mold frame 21 Through hole 22 Support bar 23 Lifting reversing bar 24 Narrow opening

Claims (3)

両側壁略中央に埋設され、コンクリート製品を吊上げて反転しうる吊上げ反転穴を形成する吊上げ反転穴形成部材であり、
該吊上げ反転穴形成部材は、円筒パイプ状をなす穴形成本体と、穴形成本体の略中間部で外側に向かって略円盤状に張り出すアンカー部材と、
前記穴形成本体の両端に嵌め込まれる可撓性を有するキャップ部材と、
を有してなり、
一方側に嵌め込まれるキャップ部材は、穴形成本体の端部外周に添着する輪状の装着片と、該装着片の端部から穴形成本体の一方側開口を閉塞するよう円状に張り出すキャップ部とを備え、かつ、前記キャップ部には、吊上げ反転穴となる穴形成本体の開口に差し込まれる吊り上げ反転棒の径より狭小の径とした開口が切り取り形成可能とされ、
他方側に嵌め込まれるキャップ部材は、穴形成本体の他方側開口端部内周面に添着して該開口端部内側に係止する内側装着片を有し、かつ内側装着片から穴形成本体の他方側開口を閉塞するよう円状に張り出すキャップ部とを備えて形成され、吊上げ反転穴となる穴形成本体の開口に差し込まれる吊り上げ反転棒の先端部が前記内側装着片で係止可能とされたことを特徴とする吊上げ反転穴形成部材。It is a lifting reversal hole forming member that is embedded in the center of both side walls and forms a lifting reversal hole that can lift and reverse a concrete product,
The lifting reversal hole forming member includes a hole-forming main body having a cylindrical pipe shape, an anchor member projecting outward in a substantially disk shape at a substantially middle portion of the hole-forming main body,
A flexible cap member fitted to both ends of the hole-forming body;
Having
The cap member fitted on one side includes a ring-shaped mounting piece attached to the outer periphery of the end portion of the hole forming body, and a cap portion projecting in a circular shape so as to close one side opening of the hole forming body from the end portion of the mounting piece And the cap part can be cut and formed with an opening having a diameter narrower than the diameter of the lifting reversal rod inserted into the opening of the hole forming main body to be the lifting reversal hole,
The cap member to be fitted to the other side has an inner mounting piece that is attached to the inner peripheral surface of the other opening end of the hole forming body and is locked to the inner side of the opening end, and from the inner mounting piece to the other of the hole forming main body A cap portion projecting in a circular shape so as to close the side opening, and the tip end portion of the lifting reversal rod inserted into the opening of the hole forming main body serving as the lifting reversal hole can be locked by the inner mounting piece. A lifting reversal hole forming member characterized by that. 両側壁略中央に埋設され、コンクリート製品を吊上げて反転しうる吊上げ反転穴を形成する吊上げ反転穴形成部材であり、
該吊上げ反転穴形成部材は、円筒パイプ状をなす穴形成本体と、穴形成本体の略中間部で外側に向かって略円盤状に張り出すアンカー部材と、
前記穴形成本体の両端に嵌め込まれる可撓性を有するキャップ部材と、
を有してなり、
一方側に嵌め込まれるキャップ部材は、穴形成本体の端部外周に添着する輪状の装着片と、該装着片の端部から穴形成本体の一方側開口を閉塞するよう円状に張り出すキャップ部とを備え、かつ、前記キャップ部には、吊上げ反転穴となる穴形成本体の開口に差し込まれる吊り上げ反転棒の径より狭小の径とした開口が切り取り形成可能とされ、
他方側に嵌め込まれるキャップ部材は、穴形成本体の他方側開口端部外周面及び内周面にそれぞれ添着すると共に該開口端部を挟持する外側装着片と内側装着片とを有し、かつ外側装着片から穴形成本体の他方側開口を閉塞するよう円状に張り出すキャップ部とを備えて形成され、吊上げ反転穴となる穴形成本体の開口に差し込まれる吊り上げ反転棒の先端部が前記内側装着片で係止可能とされたことを特徴とする吊上げ反転穴形成部材。It is a lifting reversal hole forming member that is embedded in the center of both side walls and forms a lifting reversal hole that can lift and reverse a concrete product,
The lifting reversal hole forming member includes a hole-forming main body having a cylindrical pipe shape, an anchor member projecting outward in a substantially disk shape at a substantially middle portion of the hole-forming main body,
A flexible cap member fitted to both ends of the hole-forming body;
Having
The cap member fitted on one side includes a ring-shaped mounting piece attached to the outer periphery of the end portion of the hole forming body, and a cap portion projecting in a circular shape so as to close one side opening of the hole forming body from the end portion of the mounting piece And the cap part can be cut and formed with an opening having a diameter narrower than the diameter of the lifting reversal rod inserted into the opening of the hole forming main body to be the lifting reversal hole,
The cap member fitted to the other side has an outer mounting piece and an inner mounting piece that are attached to the outer peripheral surface and the inner peripheral surface of the other opening end portion of the hole forming body and sandwich the opening end portion, and the outer side. A cap portion projecting in a circular shape so as to close the other side opening of the hole forming body from the mounting piece, and the tip of the lifting reversing rod inserted into the opening of the hole forming body serving as the lifting reversal hole is the inner side A lifting reversal hole forming member characterized in that it can be locked with a mounting piece. 断面略Ｕ字状をなすコンクリート製Ｕ字溝の両側壁略中央に埋設され、コンクリート製Ｕ字溝を吊上げて反転しうる吊上げ反転穴を形成する吊上げ反転穴形成部材であり、
該吊上げ反転穴形成部材は、円筒パイプ状をなす穴形成本体と、穴形成本体が軸方向に圧縮され、略中間部で外側に向かって前記穴形成本体自体が略円盤状に張り出して形成されたアンカー部材と、
前記穴形成本体の両端に嵌め込まれる可撓性を有するキャップ部材と、
を有してなり、
一方側に嵌め込まれるキャップ部材は、穴形成本体の端部外周に添着する輪状の装着片と、該装着片の端部から穴形成本体の一方側開口を閉塞するよう円状に張り出すキャップ部とを備え、かつ、前記キャップ部には、吊上げ反転穴となる穴形成本体の開口に差し込まれる吊り上げ反転棒の径より狭小の径とした開口が切り取り形成可能とされ、
他方側に嵌め込まれるキャップ部材は、穴形成本体の他方側開口端部外周面及び内周面にそれぞれ添着すると共に該開口端部を挟持する外側装着片と内側装着片とを有し、かつ外側装着片から穴形成本体の他方側開口を閉塞するよう円状に張り出すキャップ部とを備えて形成され、吊上げ反転穴となる穴形成本体の開口に差し込まれる吊り上げ反転棒の先端部が前記内側装着片で係止可能とされたことを特徴とする吊上げ反転穴形成部材。A lifting reversal hole forming member that is embedded in substantially the center of both side walls of a concrete U-shaped groove having a substantially U-shaped cross section and forms a lifting reversal hole that can be reversed by lifting the concrete U-shaped groove,
The lifting reversal hole forming member is formed by a hole forming main body having a cylindrical pipe shape, a hole forming main body being compressed in the axial direction, and the hole forming main body itself projecting outward in a substantially intermediate portion in a substantially disk shape. Anchor members,
A flexible cap member fitted to both ends of the hole-forming body;
Having
The cap member fitted on one side includes a ring-shaped mounting piece attached to the outer periphery of the end portion of the hole forming body, and a cap portion projecting in a circular shape so as to close one side opening of the hole forming body from the end portion of the mounting piece And the cap part can be cut and formed with an opening having a diameter narrower than the diameter of the lifting reversal rod inserted into the opening of the hole forming main body to be the lifting reversal hole,
The cap member fitted to the other side has an outer mounting piece and an inner mounting piece that are attached to the outer peripheral surface and the inner peripheral surface of the other opening end portion of the hole forming body and sandwich the opening end portion, and the outer side. A cap portion projecting in a circular shape so as to close the other side opening of the hole forming body from the mounting piece, and the tip of the lifting reversing rod inserted into the opening of the hole forming body serving as the lifting reversal hole is the inner side A lifting reversal hole forming member characterized in that it can be locked with a mounting piece.
JP33382096A 1996-12-13 1996-12-13 Lifting reversing hole forming member of lifting reversing jig Expired - Lifetime JP3751388B2 (en)

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