JPWO2020044570A1 - Coupler for attachment - Google Patents

Coupler for attachment Download PDF

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JPWO2020044570A1
JPWO2020044570A1 JP2020540016A JP2020540016A JPWO2020044570A1 JP WO2020044570 A1 JPWO2020044570 A1 JP WO2020044570A1 JP 2020540016 A JP2020540016 A JP 2020540016A JP 2020540016 A JP2020540016 A JP 2020540016A JP WO2020044570 A1 JPWO2020044570 A1 JP WO2020044570A1
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coupler
attachment
locking
connecting pin
arm
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敏治 植田
忠男 吉川
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Ueda Industrial Co Ltd
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Ueda Industrial Co Ltd
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    • 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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

構造が簡略であることで、組み立てが容易であるとともに故障の恐れが少ないアタッチメント用カプラを、安価に提供する。ショベル側の操作によりアタッチメントが取り付け可能なアタッチメント用カプラを提供する。一端側にショベルのアーム２０１側への連動連結部９を備えるとともに、他端側にアタッチメント１００の連結ピン１０１への係止部１１を備える一対のカプラ部材３のそれぞれが、途中部で互いが回転可能に軸支されて一体に構成され、アーム２０１側の作動によりカプラ部材３が互いに回転変位されることで、カプラ部材３それぞれの係止部１１に連結ピン１０１が係止されるもの。Since the structure is simple, an attachment coupler that is easy to assemble and has a low risk of failure can be provided at low cost. Provided is an attachment coupler to which an attachment can be attached by operating the shovel side. Each of the pair of coupler members 3 having an interlocking connecting portion 9 to the arm 201 side of the excavator on one end side and a locking portion 11 to the connecting pin 101 of the attachment 100 on the other end side are in the middle of each other. The coupling pin 101 is rotatably supported and integrally configured, and the coupler members 3 are rotationally displaced from each other by the operation of the arm 201 side, so that the connecting pin 101 is locked to the locking portion 11 of each of the coupler members 3.

Description

この発明は、ショベルのアームへ各種アタッチメントを取り付けるためのアタッチメント用カプラに関する。 The present invention relates to an attachment coupler for attaching various attachments to the arm of an excavator.

土木工事現場等においては、ショベルのアームにアタッチメント用カプラを介して各種アタッチメントを取り付けることが行われている。アタッチメント用カプラを使用することで、異なる連結形態を持つ各種のアタッチメントがアームに連結使用される。この種アタッチメント用カプラとして、油圧シリンダーを使用して可動フックを作動することでアタッチメントに連結する構成のものが提供されている。この構成のアタッチメント用カプラの場合、油圧シリンダーを備えることで構成が複雑となって組み立てに手間がかかるとともに、故障発生の恐れがあり、さらに、コストが高くなる問題があった。 At civil engineering sites and the like, various attachments are attached to the arm of a shovel via an attachment coupler. By using the attachment coupler, various attachments having different connection forms are connected and used to the arm. As a coupler for this kind of attachment, a coupler having a configuration of connecting to an attachment by operating a movable hook using a hydraulic cylinder is provided. In the case of the coupler for attachment having this configuration, the provision of the hydraulic cylinder complicates the configuration, takes time and effort for assembly, may cause a failure, and further increases the cost.

日本国特許番号 ２７５６０７８ Japanese patent number 2756078

この発明では、構造が簡略であることで、組み立てが容易であるとともに故障の恐れが少ないアタッチメント用カプラを、安価に提供することを目的とする。ショベル側の操作によりアタッチメントが取り付けられるアタッチメント用カプラを提供することを目的とする。 It is an object of the present invention to provide an attachment coupler which is easy to assemble and has a low risk of failure because of its simple structure at low cost. It is an object of the present invention to provide an attachment coupler to which an attachment can be attached by operating the excavator side.

この発明では、一端側にショベルのアーム側への連動連結部を備えるとともに、他端側にアタッチメントの連結ピンへの係止部を備える一対のカプラ部材のそれぞれが、途中部で互いが回転可能に軸支されて一体に構成され、前記アーム側の作動により前記カプラ部材が互いに回転変位されることで、前記カプラ部材それぞれの係止部に前記連結ピンが係止されることを特徴とするアタッチメント用カプラを提供する。
上記構成によれば、アーム側の作動により一対のカプラ部材が互いに回転変位されることで、カプラ部材それぞれの係止部にアタッチメントの連結ピンが係止される。アタッチメント用カプラ自身に油圧シリンダー等の駆動機構を設けないことで、構成が簡略なものとなる。ショベル側の操作によりアタッチメントの取り付けが行える。
係止部に連結ピンが係止されるのに連動して連結ピンを係止部に固定支持する固定支持手段を備える構成とすることで、固定支持のための物品を用いることなく、ショベル側の操作により自動的に連結ピンが係止部に固定支持される。とくに、一方のカプラ部材に一方の連結ピンを固定支持した状態において、他方のカプラ部材に他方の連結ピンを係止する作業が安定して行われる。
固定支持手段の固定支持を解除する解除手段を備える構成とすることで、係止ピンの固定支持の解除が容易に行われる。
一対のカプラ部材が略同形である構成とすることで、製造が容易、かつ、安価に行われる。In the present invention, each of the pair of coupler members having an interlocking connecting portion to the arm side of the excavator on one end side and a locking portion to the connecting pin of the attachment on the other end side can rotate each other in the middle portion. It is characterized in that the coupler members are rotationally displaced from each other by the operation of the arm side, so that the connecting pin is locked to the locking portion of each of the coupler members. Provide a coupler for attachment.
According to the above configuration, the pair of coupler members are rotationally displaced from each other by the operation of the arm side, so that the connecting pin of the attachment is locked to the locking portion of each coupler member. By not providing a drive mechanism such as a hydraulic cylinder on the attachment coupler itself, the configuration is simplified. The attachment can be attached by operating the excavator side.
By providing a fixed support means for fixing and supporting the connecting pin to the locking portion in conjunction with the locking of the connecting pin to the locking portion, the shovel side can be used without using an article for fixed support. The connecting pin is automatically fixedly supported by the locking portion by the operation of. In particular, in a state where one connecting pin is fixedly supported by one coupler member, the work of locking the other connecting pin to the other coupler member is stably performed.
By providing a release means for releasing the fixed support of the fixed support means, the fixed support of the locking pin can be easily released.
By making the pair of coupler members substantially the same shape, it is easy to manufacture and inexpensive.

この発明によれば、組み立てが容易であるとともに故障の恐れが少ないアタッチメント用カプラが、安価に提供される。ショベル側の操作によりアタッチメントの取り付けが容易に行われる。 According to the present invention, an attachment coupler that is easy to assemble and has a low risk of failure is provided at low cost. The attachment can be easily attached by operating the excavator side.

この発明のアタッチメント用カプラの実施形態の正面図Front view of the embodiment of the coupler for attachment of the present invention. この発明のアタッチメント用カプラの実施形態の平面図Top view of the embodiment of the coupler for attachment of the present invention. この発明のアタッチメント用カプラの実施形態の側面図Side view of the embodiment of the coupler for attachment of this invention この発明のアタッチメント用カプラの実施形態の要部の拡大斜視図Enlarged perspective view of the main part of the embodiment of the coupler for attachment of the present invention. この発明のアタッチメント用カプラの実施形態の要部の拡大断面図Enlarged sectional view of the main part of the embodiment of the coupler for attachment of the present invention. この発明のアタッチメント用カプラの実施形態の使用説明図Explanatory drawing of use of embodiment of the coupler for attachment of this invention この発明のアタッチメント用カプラの実施形態の使用説明図Explanatory drawing of use of embodiment of the coupler for attachment of this invention この発明のアタッチメント用カプラの実施形態の動作説明図An operation explanatory view of the embodiment of the coupler for attachment of this invention. この発明のアタッチメント用カプラの実施形態の動作説明図An operation explanatory view of the embodiment of the coupler for attachment of this invention. この発明のアタッチメント用カプラの実施形態の動作説明図An operation explanatory view of the embodiment of the coupler for attachment of this invention. この発明のアタッチメント用カプラの実施形態の動作説明図An operation explanatory view of the embodiment of the coupler for attachment of this invention.

図１はこの発明のアタッチメント用カプラの正面図、図２は同平面図、図３は同側面図である。アタッチメント用カプラ１は略同形の一対のカプラ部材３のそれぞれが、線対称配置される位置において、途中部で互いが回転可能に軸支ピン５で軸支されて一体に構成されている。カプラ部材３は相対して位置する側フレーム７を備え、その側フレーム７の上部の相対する位置にショベルのアーム側への連動連結部となる連結軸支穴９を備えるとともに、下部の相対する位置間にアタッチメント１００の連結ピン１０１への係止部となる係止用溝部１１を備えている。
アタッチメント用カプラ１は、アタッチメント１００の連結ピン１０１の係止用溝部１１からの離脱を阻止する固定支持手段と、固定支持手段の離脱阻止を解除する解除手段とを備えており、以下、図４を参照してその構造について説明する。
固定支持手段は、連結ピン１００の押さえ片１７と、係止ローラ１９と、作動レバー２７と、ロック体３３とを備えて構成される。押さえ片１７は相対する側フレーム７間に固定状態に配置される第１ロッド１５に回転可能に装着される第１管体１２に一体に固定されて設けられている。係止ローラ１９は第１管体１２に固定取付けされる支持部材２９に回転可能に取り付けられ、押さえ片１７と同期して回転変位する。作動レバー２７は折れ曲がり形態で、その折れ曲がり位置が一方の側フレーム７に固定取付けされた軸支ロッド１４に回転可能に軸支持されて設けられ、その下端を被押し込み部２３とし上端を係止部２５としている。押さえ片１７は下部に連結ピン１００の押さえ部２０を、上部にロック面１６を持つ突出部１８をそれぞれ一体に備えている。押さえ部２０は係止用溝部１１の上縁中央に設けられた切り欠き部８に嵌入する状態において連結ピン１００を押さえる。作動レバー２７の被押し込み部２３は係止用溝部１１の窓穴３１に臨むように位置し、係止部２５は係止ローラ１９に係止可能に設けられている。また、作動レバー２７は軸支位置より上部がコイルバネ２２により後方に引っ張り付勢されていて、これにより自由状態においては被押し込み部２３が係止用溝部１１の窓穴３１から突出する。
ロック体３３は相対する側フレーム７間に固定状態に配置される第２ロッド３７の太径部３７ａに回転可能に装着される第２管体３９の一端側に固定されて設けられている。ロック体３３は前方へ突出しその前面をロック面４１とする突出部４３を備えている。４４は係止ローラで、第２管体３９の他端側に固定取付けされる支持部材４５に回転可能に取り付けられ、ロック体３３と同期して回転変位する。支持部材４５はコイルバネ３２により前方に引っ張り付勢されていて、これにより第２管体３９は前方方向に回転付勢されている。
解除手段は操作部３５と、係止用ブロック４９とを備えて構成される。第２ロッド３７の先端側の細径部３７ｂに回転可能に装着される角状の第３管体４７の一端側に、係止凹部３６を備える係止用ブロック４９が固定されて設けられている。係止用ブロック４９の係止凹部３６に上記係止ローラ４４が位置する。第３管体４７の他端側に固定取付けされる操作部材５３にハンドル５７が取り付けられ、操作部材５３とハンドル５７とが操作部３５を構成する。操作部３５は側フレーム７の外面に配置され、側フレーム７外面にはハンドル５７の操作案内表示６０が、図１に示すように「着」「脱」と付されている。ハンドル５７は、図５に示すように、ケース７０内にコイルバネ７２により前方に突出付勢されるプランジャ７４が設けられ、プランジャ７４の基部が持ち手７６とされて構成されている。ハンドル５７が回転操作されることでプランジャ７４の端部が操作案内表示６０「着」「脱」に対応配置される係止穴６２に係止し、持ち手７６がコイルバネ７２の付勢力に抗して引かれることで、プランジャ７４の端部が係止穴６２から離脱される。
以下、動作説明を行う。アタッチメント用カプラ１は、図６、図７に示すようにショベルのアーム２０１端とリンク２０２端に連結軸支穴９部分が連結されて用いられ、ショベル側においてアーム２０１とリンク２０２とが作動操作されることでカプラ部材３のそれぞれが互いに回転変位される。８０のそれぞれは当接支持片であり、カプラ部材３のそれぞれが図６に示すように最も開かれた際に互いに当接し、その開き角度を規定してカプラ部材３のそれぞれが安定作動されるようにしている。図８はカップラ部材３の係止用溝部１１にアタッチメント１００の連結ピン１０１が係止されていない状態、図９は係止している状態を示す。係止されていない状態においては、押さえ片１７の押さえ部２０は上方に位置して係止用溝部１１は開いた状態となっている。また、作動レバー２７はコイルバネ２２に付勢されて被押し込み部２３を係止用溝部１１の窓穴３１から突出させ、かつ、その係止部２５は係止ローラ１９に係止している。また、その際には、ロック体３３のロック面４１は押さえ片１７のロック面１６に係止しておらず、ハンドル５７は「脱」の操作案内表示６０側に位置しており、そのプランジャ７４の端部は「脱」側の係止穴６２に係止している。さらに、図１０はその際の係止用ブロック５３の係止凹部３６への係止ローラ４４の係止状態を示し、係止ローラ４４は係止凹部３６の一方側面３６ａに係止している。
係止用溝部１１内に連結ピン１０１を係止させる際には、それに先立ち、ハンドル５７を操作することでプランジャ７４の端部を「脱」側の係止穴６２から離脱させ、さらに、ハンドル５７を「着」側に回転操作することで「着」の係止穴６２に係止させる。図１１はその際の係止用ブロック４９の係止凹部３６への係止ローラ４４の係止状態を示し、係止ローラ４４は係止凹部３６の他方側面３６ｂに近接して位置し、両側にクリアランスＣ１、Ｃ２が存在している。これによりロック体３３はコイルバネ３２により回転付勢された状態において下面側が押さえ片１７の突出部１８上に当接する状態となる。
次に、図８の状態においてアーム２０１とリンク２０２とが作動操作されて、一方のカプラ部材３の開いた係止用溝部１１内に連結ピン１０１を位置させることで、連結ピン１０１が窓穴３１から突出する作動レバー２７の被押し込み部２３を押し込み、これによりコイルバネ２２の付勢力に抗して作動レバー２７が回転し、作動レバー２７の係止部２５が係止ローラ１９から外れる。係止ローラ１９が外れることで支持部材２９が自由状態となってそれに一体の第１管体１２と押さえ片１７とが自重により前方に回転し、押さえ部２０がアタッチメント１００の連結ピン１０１を押さえる状態となる。押さえ片１７の前方への回転は、突出部１８の上面がコイルバネ３２により回転付勢されているロック体３３の下面を押し上げながら行われ、ロック体３３の先端を突出部１８先端が越えることでロック面１６がロック面４１に相対してコイルバネ３２の付勢力により互いが弾力的に当接して係止する（図４に示す状態）。このように、ロック面１６がロック面４１に弾力的に当接して係止することで、押さえ片１７がロックされ、連結ピン１０１が係止用溝部１１内に押さえ部１７で押さえられて固定保持される。
上記の突出部１８の上面がロック体３３の下面を押し上げる際には、係止ローラ４４は係止凹部３６内において図１１におけるクリアランスＣ２の距離左方に移動し、ロック体３３の先端を突出部１８先端が越える際に係止ローラ４４は係止凹部３６内において図１１におけるアランスＣ１＋クリアランスＣ２の距離右方に移動し、係止ローラ４４が係止凹部３６の一方側面３６ａに係止する図１０の状態に戻る。図６はアーム２０１側のカプラ部材３に連結ピン１０１が固定保持された状態を示す。このように一方の連結ピン１０１を固定保持する状態において上記と同様にしてアーム２０１とリンク２０２とが作動操作されて、他方のカプラ部材３の係止用溝部１１にアタッチメント１００の連結ピン１０１が上記と同様にして固定保持される。これにより図７に示すように、アーム２０１側とリンク２０２側の両方のカプラ部材３に連結ピン１０１が固定保持されてアタッチメント１００が取り付けられ、アタッチメント１００による作業可能状態となる。
アタッチメント１００を取り外す際には、まず、先に離脱させるカプラ部材３のハンドル５７を操作することでプランジャ７４の端部を「着」側の係止穴６２から離脱させ、さらに、ハンドル５７を「脱」側に回転操作することでプランジャ端部を「脱」側の係止穴６２へ係止する。図１０に示す状態において、ハンドル５７が「脱」側に回転操作されることで係止ローラ４４が係止凹部３６の一方側面３６ａに押されて係止ローラ４４が変位する。これに伴ってロック体３３が回転変位してロック面１６がロック面４１から外れ、押さえ片１７は自由状態となる。この状態においてアーム２０１とリンク２０２とが作動操作されることでカプラ部材３が変位されて係止用溝部１１内から連結ピン１０１が離脱される。その際に押さえ片１７は連結ピン１０１に沿って押し上げられて開かれて係止ローラ１９が回転変位し、かつ、被押し込み部２３の連結ピン１０１による押し込みが解除されることで、作動レバー２７はコイルバネ２２の付勢力により回転して係止部２５が係止ローラ１９に係止する状態に復帰する。同様にして他方のカプラ部材３から連結ピン１０１を離脱させることで、アタッチメント１００の取り外しが行われる。1 is a front view of the attachment coupler of the present invention, FIG. 2 is a plan view, and FIG. 3 is a side view. The attachment coupler 1 is integrally configured such that each of a pair of coupler members 3 having substantially the same shape are axially supported by a shaft support pin 5 so as to be rotatable each other in the middle at a position where they are arranged line-symmetrically. The coupler member 3 is provided with a side frame 7 located relative to each other, and is provided with a connecting shaft support hole 9 serving as an interlocking connection portion to the arm side of the excavator at a facing position on the upper portion of the side frame 7, and is opposed to the lower portion. A locking groove 11 is provided between the positions to serve as a locking portion for the attachment 100 to the connecting pin 101.
The attachment coupler 1 includes a fixed support means for preventing the attachment 100 from being detached from the locking groove portion 11 of the connecting pin 101, and a release means for releasing the detachment prevention of the fixed support means. The structure will be described with reference to.
The fixed support means includes a holding piece 17 of the connecting pin 100, a locking roller 19, an operating lever 27, and a locking body 33. The holding piece 17 is integrally fixed to and provided on the first tubular body 12 rotatably mounted on the first rod 15 arranged in a fixed state between the opposing side frames 7. The locking roller 19 is rotatably attached to the support member 29 fixedly attached to the first tubular body 12, and is rotationally displaced in synchronization with the holding piece 17. The actuating lever 27 is in a bent form, and the bent position is provided so as to be rotatably supported by a shaft support rod 14 fixedly attached to one side frame 7, the lower end thereof is a pushed portion 23, and the upper end is a locking portion. It is set to 25. The holding piece 17 is integrally provided with a holding portion 20 of a connecting pin 100 at the lower portion and a protruding portion 18 having a locking surface 16 at the upper portion. The pressing portion 20 presses the connecting pin 100 in a state of being fitted into the notch portion 8 provided at the center of the upper edge of the locking groove portion 11. The pushed-in portion 23 of the operating lever 27 is positioned so as to face the window hole 31 of the locking groove portion 11, and the locking portion 25 is provided so as to be lockable on the locking roller 19. Further, the upper part of the actuating lever 27 is pulled backward by the coil spring 22 from the shaft support position, whereby the pushed portion 23 protrudes from the window hole 31 of the locking groove portion 11 in the free state.
The lock body 33 is fixedly provided on one end side of the second tube body 39 rotatably mounted on the large diameter portion 37a of the second rod 37 arranged in a fixed state between the opposing side frames 7. The lock body 33 has a protrusion 43 that protrudes forward and has a lock surface 41 on the front surface thereof. Reference numeral 44 denotes a locking roller, which is rotatably attached to a support member 45 fixedly attached to the other end side of the second tube body 39, and is rotationally displaced in synchronization with the lock body 33. The support member 45 is pulled forward and urged by the coil spring 32, whereby the second tubular body 39 is rotationally urged in the forward direction.
The releasing means includes an operation unit 35 and a locking block 49. A locking block 49 provided with a locking recess 36 is fixedly provided on one end side of a square third tube 47 rotatably attached to a small diameter portion 37b on the tip end side of the second rod 37. There is. The locking roller 44 is located in the locking recess 36 of the locking block 49. The handle 57 is attached to the operation member 53 fixedly attached to the other end side of the third pipe body 47, and the operation member 53 and the handle 57 form the operation unit 35. The operation unit 35 is arranged on the outer surface of the side frame 7, and the operation guide display 60 of the handle 57 is attached to the outer surface of the side frame 7 with “arrival” and “detachment” as shown in FIG. As shown in FIG. 5, the handle 57 is configured such that a plunger 74 is provided in the case 70 to be urged forward by a coil spring 72, and the base of the plunger 74 is a handle 76. By rotating the handle 57, the end of the plunger 74 is locked in the locking hole 62 arranged corresponding to the operation guidance display 60 "arrival" and "disengagement", and the handle 76 resists the urging force of the coil spring 72. The end of the plunger 74 is disengaged from the locking hole 62 by being pulled.
The operation will be described below. As shown in FIGS. 6 and 7, the attachment coupler 1 is used by connecting the connecting shaft support hole 9 portion to the arm 201 end and the link 202 end of the excavator, and the arm 201 and the link 202 are operated on the excavator side. By doing so, each of the coupler members 3 is rotationally displaced from each other. Each of the 80s is a contact support piece, and each of the coupler members 3 abuts against each other when the coupler members 3 are most opened as shown in FIG. 6, and each of the coupler members 3 is stably operated by defining the opening angle thereof. I am doing it. FIG. 8 shows a state in which the connecting pin 101 of the attachment 100 is not locked in the locking groove portion 11 of the coupler member 3, and FIG. 9 shows a state in which the connecting pin 101 is locked. In the unlocked state, the holding portion 20 of the holding piece 17 is located above and the locking groove portion 11 is in an open state. Further, the operating lever 27 is urged by the coil spring 22 to project the pushed portion 23 from the window hole 31 of the locking groove portion 11, and the locking portion 25 is locked to the locking roller 19. Further, at that time, the lock surface 41 of the lock body 33 is not locked to the lock surface 16 of the holding piece 17, and the handle 57 is located on the operation guidance display 60 side of "disengagement", and the plunger is provided. The end of 74 is locked in the locking hole 62 on the "disengagement" side. Further, FIG. 10 shows a state in which the locking roller 44 is locked in the locking recess 36 of the locking block 53 at that time, and the locking roller 44 is locked to one side surface 36a of the locking recess 36. ..
Before locking the connecting pin 101 in the locking groove 11, the end of the plunger 74 is separated from the locking hole 62 on the "disengagement" side by operating the handle 57, and further, the handle is further engaged. By rotating the 57 to the "arrival" side, the 57 is locked in the "arrival" locking hole 62. FIG. 11 shows the locking state of the locking roller 44 in the locking recess 36 of the locking block 49 at that time, and the locking roller 44 is located close to the other side surface 36b of the locking recess 36 and is located on both sides. Clearances C1 and C2 are present in. As a result, the lock body 33 is in a state where the lower surface side is in contact with the protruding portion 18 of the holding piece 17 in a state of being rotationally urged by the coil spring 32.
Next, in the state of FIG. 8, the arm 201 and the link 202 are operated to position the connecting pin 101 in the open locking groove 11 of one of the coupler members 3, so that the connecting pin 101 is a window hole. The pressed portion 23 of the operating lever 27 protruding from 31 is pushed in, whereby the operating lever 27 rotates against the urging force of the coil spring 22, and the locking portion 25 of the operating lever 27 is disengaged from the locking roller 19. When the locking roller 19 is disengaged, the support member 29 is in a free state, and the first tube body 12 and the holding piece 17 integrated with the support member 29 rotate forward due to their own weight, and the holding portion 20 holds the connecting pin 101 of the attachment 100. It becomes a state. The forward rotation of the holding piece 17 is performed while the upper surface of the protruding portion 18 pushes up the lower surface of the lock body 33 whose upper surface is rotationally urged by the coil spring 32, and the tip of the protruding portion 18 exceeds the tip of the lock body 33. The lock surface 16 elastically abuts and locks each other with respect to the lock surface 41 due to the urging force of the coil spring 32 (state shown in FIG. 4). In this way, the lock surface 16 elastically abuts on the lock surface 41 and locks, so that the holding piece 17 is locked, and the connecting pin 101 is held and fixed in the locking groove portion 11 by the holding portion 17. Be retained.
When the upper surface of the protruding portion 18 pushes up the lower surface of the lock body 33, the locking roller 44 moves to the left by the distance of the clearance C2 in FIG. 11 in the locking recess 36, and the tip of the lock body 33 protrudes. When the tip of the portion 18 crosses, the locking roller 44 moves to the right by the distance of allance C1 + clearance C2 in FIG. 11 in the locking recess 36, and the locking roller 44 is locked to one side surface 36a of the locking recess 36. Return to the state shown in FIG. FIG. 6 shows a state in which the connecting pin 101 is fixedly held by the coupler member 3 on the arm 201 side. In this state, the arm 201 and the link 202 are operated in the same manner as described above in the state where one of the connecting pins 101 is fixedly held, and the connecting pin 101 of the attachment 100 is placed in the locking groove 11 of the other coupler member 3. It is fixedly held in the same manner as above. As a result, as shown in FIG. 7, the connecting pin 101 is fixedly held and held on both the coupler member 3 on the arm 201 side and the link 202 side, the attachment 100 is attached, and the attachment 100 is in a workable state.
When removing the attachment 100, first, by operating the handle 57 of the coupler member 3 to be detached first, the end portion of the plunger 74 is detached from the locking hole 62 on the "wearing" side, and further, the handle 57 is "removed". By rotating to the "disengagement" side, the end of the plunger is locked to the locking hole 62 on the "disengagement" side. In the state shown in FIG. 10, when the handle 57 is rotated to the “disengagement” side, the locking roller 44 is pushed by one side surface 36a of the locking recess 36, and the locking roller 44 is displaced. Along with this, the lock body 33 is rotationally displaced, the lock surface 16 is disengaged from the lock surface 41, and the holding piece 17 is in a free state. In this state, when the arm 201 and the link 202 are operated, the coupler member 3 is displaced and the connecting pin 101 is separated from the inside of the locking groove portion 11. At that time, the holding piece 17 is pushed up and opened along the connecting pin 101, the locking roller 19 is rotationally displaced, and the pushing by the connecting pin 101 of the pushed portion 23 is released, so that the operating lever 27 is released. Is rotated by the urging force of the coil spring 22 and returns to the state where the locking portion 25 is locked to the locking roller 19. Similarly, the attachment 100 is removed by detaching the connecting pin 101 from the other coupler member 3.

１ アタッチメント用カプラ
３ カプラ部材
９ 連結軸支穴（連動連結部）
１１ 係止用溝部 （係止部）
１７ 押さえ片（固定支持手段）
１９ 係止ローラ（固定支持手段）
２７ 作動レバー（固定支持手段）
３３ ロック体（固定支持手段）
３５ 操作部（解除手段）
４３ 係止用ブロック（解除手段）
１００ アタッチメント
１０１ 連結ピン
２０１ アーム1 Attachment coupler 3 Coupler member 9 Connecting shaft support hole (interlocking connecting part)
11 Locking groove (locking part)
17 Holding piece (fixed support means)
19 Locking roller (fixed support means)
27 Actuating lever (fixed support means)
33 Lock body (fixed support means)
35 Operation unit (release means)
43 Locking block (release means)
100 Attachment 101 Connecting Pin 201 Arm

Claims (4)

一端側にショベルのアーム側への連動連結部を備えるとともに、他端側にアタッチメントの連結ピンへの係止部を備える一対のカプラ部材のそれぞれが、途中部で互いが回転可能に軸支されて一体に構成され、
前記アーム側の作動により前記カプラ部材が互いに回転変位されることで、前記カプラ部材それぞれの係止部に前記連結ピンが係止される、
ことを特徴とするアタッチメント用カプラ。Each of the pair of coupler members having an interlocking connection portion to the arm side of the excavator on one end side and a locking portion to the connection pin of the attachment on the other end side are pivotally supported by each other in the middle portion. Is configured as one
The coupler members are rotationally displaced from each other by the operation on the arm side, so that the connecting pin is locked to the locking portion of each of the coupler members.
A coupler for attachments that is characterized by that. 前記係止部に前記連結ピンが係止されるのに連動して前記連結ピンを前記係止部に固定支持する固定支持手段を備える請求項１記載のアタッチメント用カプラ。 The attachment coupler according to claim 1, further comprising a fixed support means for fixing and supporting the connecting pin to the locking portion in conjunction with the locking of the connecting pin to the locking portion. 前記固定支持手段の固定支持を解除する解除手段を備える請求項２記載のアタッチメント用カプラ。 The attachment coupler according to claim 2, further comprising a releasing means for releasing the fixed support of the fixed support means. 前記一対のカプラ部材が略同形である請求項１記載のアタッチメント用カプラ。 The attachment coupler according to claim 1, wherein the pair of coupler members have substantially the same shape.
JP2020540016A 2018-08-28 2018-08-28 Coupler for attachment Pending JPWO2020044570A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/032516 WO2020044570A1 (en) 2018-08-28 2018-08-28 Attachment coupler

Publications (1)

Publication Number Publication Date
JPWO2020044570A1 true JPWO2020044570A1 (en) 2021-12-16

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ID=69643184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020540016A Pending JPWO2020044570A1 (en) 2018-08-28 2018-08-28 Coupler for attachment

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JP (1) JPWO2020044570A1 (en)
WO (1) WO2020044570A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5859809U (en) * 1981-10-14 1983-04-22 丸山　満 Catcher for bucket crushers, etc. with adjustable pin receiver spacing
JPS61137927A (en) * 1984-12-07 1986-06-25 ジェー・アール・ビー・カンパニー・インコーポレイテッド Rapid release hitch for attachment to excavator arm

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5859809U (en) * 1981-10-14 1983-04-22 丸山　満 Catcher for bucket crushers, etc. with adjustable pin receiver spacing
JPS61137927A (en) * 1984-12-07 1986-06-25 ジェー・アール・ビー・カンパニー・インコーポレイテッド Rapid release hitch for attachment to excavator arm

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