JP2017214199A - Connection device and connection method for connecting unit attachments of construction machine - Google Patents

Connection device and connection method for connecting unit attachments of construction machine Download PDF

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JP2017214199A
JP2017214199A JP2016109831A JP2016109831A JP2017214199A JP 2017214199 A JP2017214199 A JP 2017214199A JP 2016109831 A JP2016109831 A JP 2016109831A JP 2016109831 A JP2016109831 A JP 2016109831A JP 2017214199 A JP2017214199 A JP 2017214199A
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connector
cylinder
unit attachment
hole
attachment
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JP6638558B2 (en
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鉄平 前藤
Teppei Maefuji
鉄平 前藤
大輔 高岡
Daisuke Takaoka
大輔 高岡
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Kobelco Construction Machinery Co Ltd
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Kobelco Construction Machinery Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a connection device and connection method capable of connecting unit attachments, while avoiding significant weight increase of the attachments.SOLUTION: A connection device (10) for connecting a first unit attachment and a second unit attachment, comprises: a connection pin (80) formed into a cylindrical shape having an inner peripheral face for surrounding an inner space (S); and an insertion device (12). The insertion device (12) comprises a rod (30), a cylinder (20), a cylinder holding part (40) for holding the cylinder (20) in a state of extending over a first facing part and a second facing part, and a reaction force generation member (50) for coming into contact with the first unit attachment or second unit attachment from the second side to the first side, in a state of being connected to a tip end part (30a) of the rod, thereby generating reaction force required for the cylinder (20) to insert the connection pin (80) into each insertion hole (116h, 118h) following to shrinkage of the rod (30).SELECTED DRAWING: Figure 4

Description

本発明は、クレーン等の建設機械のアタッチメントを構成する単位アタッチメント同士を連結する連結装置に関するものである。   The present invention relates to a connecting device that connects unit attachments constituting an attachment of a construction machine such as a crane.

一般に、建設機械は、走行可能な走行体に装着されたブーム等のアタッチメントを有しており、このアタッチメントは、連結ピンにより互いに連結されることが可能な複数の単位アタッチメントを含むことが多い。また、前記連結ピンを単位アタッチメントに挿入するための装置が公知である。例えば、特許文献１には、単位ブーム同士を連結する連結ピンを当該単位ブームに挿入するための連結ピン挿入構造が開示されている。具体的に、この構造は、連結ピンを単位ブームに挿入することが可能なアクチュエータと、このアクチュエータを保持する保持機構と、を有している。アクチュエータは、連結ピンの挿抜が可能な油圧シリンダを有している。保持機構は、単位ブームに固定されている。具体的に、単位ブームは、一対の主柱と、一対の主柱のうち当該単位ブームに隣接する単位ブームと対向する側の端部同士を連結する第１副柱と、一対の主柱のうち第１副柱が位置する側と反対側の端部同士を連結する第２副柱と、を有しており、保持機構は、取付部材を介して第１副柱に固定されている。また、各主柱のうち第１副柱が位置する側の端部には、連結ピンの挿通を許容する連結穴を有する第１連結部が設けられており、各主柱のうち第２副柱が位置する側の端部には、連結ピンの挿通を許容する連結穴を有する第２連結部が設けられている。各連結穴は、それぞれ副柱の軸方向と平行な方向に連結部を貫通している。   In general, a construction machine has an attachment such as a boom attached to a travelable traveling body, and this attachment often includes a plurality of unit attachments that can be connected to each other by a connection pin. Also, a device for inserting the connecting pin into the unit attachment is known. For example, Patent Document 1 discloses a connection pin insertion structure for inserting a connection pin for connecting unit booms into the unit boom. Specifically, this structure includes an actuator capable of inserting the connecting pin into the unit boom, and a holding mechanism that holds the actuator. The actuator has a hydraulic cylinder in which the connecting pin can be inserted and removed. The holding mechanism is fixed to the unit boom. Specifically, the unit boom includes a pair of main pillars, a first sub pillar that connects ends of the pair of main pillars facing the unit boom adjacent to the unit boom, and a pair of main pillars. Of these, the second sub-column that connects ends opposite to the side on which the first sub-column is located, and the holding mechanism is fixed to the first sub-column via an attachment member. Moreover, the 1st connection part which has the connection hole which accept | permits the insertion of a connection pin is provided in the edge part by which the 1st sub pillar is located among each main pillar, A second connecting portion having a connecting hole that allows insertion of the connecting pin is provided at an end portion on the side where the column is located. Each connecting hole passes through the connecting portion in a direction parallel to the axial direction of the sub pillar.

この連結ピン挿入構造では、以下のようにして連結ピンが挿入される。まず、特定の単位ブームの第１副柱に固定された保持機構にアクチュエータが取り付けられる。そして、特定の単位ブームの第１連結部の連結穴と、特定の単位ブームに連結される単位ブームの第２連結部の連結穴と、が副柱の軸方向と平行な方向に重なるように両単位ブームが配置された状態において、油圧シリンダによって連結ピンが外向きに押圧されることにより当該連結ピンが各連結穴に挿入される。これにより、単位ブーム同士が互いに連結される。   In this connection pin insertion structure, the connection pin is inserted as follows. First, an actuator is attached to a holding mechanism fixed to the first sub-post of a specific unit boom. And the connection hole of the 1st connection part of a specific unit boom and the connection hole of the 2nd connection part of the unit boom connected with a specific unit boom overlap in the direction parallel to the axial direction of a sub pillar. In a state where both unit booms are disposed, the connecting pin is inserted into each connecting hole by pressing the connecting pin outward by the hydraulic cylinder. Thereby, unit booms are mutually connected.

特開２００９−１７３４２４号公報JP 2009-173424 A

特許文献１に記載される連結ピン挿入構造は、油圧シリンダによって連結ピンを外向きに押し込むときに必要な反力をアクチュエータと保持機構との間に生じさせる構造であり、また、この保持機構が単位ブームに固定されているので、ブームが重量化する。   The connecting pin insertion structure described in Patent Document 1 is a structure that generates a reaction force required between the actuator and the holding mechanism when the connecting pin is pushed outward by a hydraulic cylinder. Since it is fixed to the unit boom, the boom becomes heavy.

本発明の目的は、アタッチメントの著しい重量化を回避しながら単位アタッチメント同士を連結することが可能な連結装置及び連結方法を提供することである。   An object of the present invention is to provide a connecting device and a connecting method capable of connecting unit attachments while avoiding significant weighting of the attachments.

前記課題を解決するための手段として、本発明は、建設機械のアタッチメントを構成する第１単位アタッチメント及び第２単位アタッチメントであって、前記第１単位アタッチメントとして、前記第２単位アタッチメントと対向するとともに当該第１単位アタッチメントと前記第２単位アタッチメントとが互いに対向する方向と交差する交差方向に延びる第１対向部を含む第１本体と、前記第１本体のうち前記第１対向部が位置する側の端部に接続された第１コネクタであって当該第１コネクタを前記交差方向に貫通する第１貫通孔を有する第１コネクタと、を有するものと、前記第２単位アタッチメントとして、前記第１単位アタッチメントと対向するとともに前記交差方向に延びる第２対向部を含む第２本体と、前記第２本体のうち前記第２対向部が位置する側の端部に接続された第２コネクタであって当該第２コネクタを前記交差方向に貫通する第２貫通孔を有する第２コネクタと、を有するものと、を連結する連結装置であって、内部空間を取り囲む内周面を有する筒状に形成されており、前記第１貫通孔内及び前記第２貫通孔内に挿入されることが可能な連結ピンと、前記第１単位アタッチメントと前記第２単位アタッチメントとが互いに連結されるように前記連結ピンを前記第１コネクタ及び前記第２コネクタに挿入する挿入装置と、を備え、前記挿入装置は、前記連結ピンの内部空間を挿通可能な形状を有するロッドと、前記ロッドを伸縮させるシリンダと、前記第１単位アタッチメントの第１貫通穴と前記第２単位アタッチメントの第２貫通穴とが前記交差方向に重なった状態において、前記シリンダが前記第１対向部及び前記第２対向部に対して前記交差方向に沿って相対変位可能となるように当該第１対向部及び当該第２対向部に跨った状態で前記シリンダを保持するシリンダ保持部と、前記ロッドの先端部に対して着脱自在に接続可能で、かつ、前記交差方向について前記第１コネクタ及び前記第２コネクタを基準として前記第１対向部及び前記第２対向部が位置する第１側から当該第１側と反対に位置する第２側に向かって前記連結ピンの内部空間及び各貫通孔内を通過するように配置された前記ロッドの先端部に接続された状態で前記第１単位アタッチメント又は前記第２単位アタッチメントに対して前記第２側から前記第１側に向かって当接することにより、前記シリンダ保持部が前記第１対向部及び前記第２対向部に跨った状態において前記ロッドが縮むのに伴って前記シリンダが各対向部に対して前記第１コネクタ及び前記第２コネクタに向かって相対変位しながら前記連結ピンを前記第１貫通孔及び前記第２貫通孔内に挿入するのに必要な反力を生じさせる反力生成用部材と、を備える、連結装置を提供する。   As means for solving the problems, the present invention provides a first unit attachment and a second unit attachment constituting an attachment of a construction machine, wherein the first unit attachment is opposed to the second unit attachment. A first body including a first facing portion extending in a crossing direction intersecting a direction in which the first unit attachment and the second unit attachment face each other; and a side of the first body where the first facing portion is located A first connector connected to an end of the first connector and having a first connector having a first through-hole penetrating the first connector in the intersecting direction, and the second unit attachment as the first connector A second body including a second facing portion facing the unit attachment and extending in the intersecting direction; A second connector connected to an end portion on the side where the two opposing portions are located, and having a second connector having a second through-hole penetrating the second connector in the crossing direction. A connecting device, which is formed in a cylindrical shape having an inner peripheral surface surrounding an internal space, and can be inserted into the first through hole and the second through hole, and the first An insertion device for inserting the connection pin into the first connector and the second connector so that the unit attachment and the second unit attachment are connected to each other, and the insertion device is an internal space of the connection pin. A rod having a shape that allows insertion of the rod, a cylinder that expands and contracts the rod, a first through hole of the first unit attachment, and a second through hole of the second unit attachment in the intersecting direction. In this state, the cylinder straddles the first facing portion and the second facing portion so that the cylinder can be relatively displaced along the intersecting direction with respect to the first facing portion and the second facing portion. A cylinder holding portion for holding the cylinder, and a detachable connection to the tip end portion of the rod, and the first opposing portion and the second connector with respect to the crossing direction with reference to the first connector and the second connector; The tip of the rod disposed so as to pass through the internal space of each of the connecting pins and the inside of each through hole from the first side where the second facing portion is located toward the second side located opposite to the first side. The cylinder holding portion is in contact with the first unit attachment or the second unit attachment from the second side toward the first side in a state where the cylinder holding portion is connected to the first unit attachment. As the rod contracts in a state straddling the direction portion and the second facing portion, the cylinder is relatively displaced toward the first connector and the second connector with respect to each facing portion while the connecting pin is moved. And a reaction force generating member that generates a reaction force required to be inserted into the first through hole and the second through hole.

本連結装置では、連結ピンが内部空間を有する筒状であるので、シリンダ保持部が第１対向部及び第２対向部に跨るようにこれら対向部上に配置され、かつ、前記第１側から前記第２側に向かって連結ピンの内部空間及び各貫通孔内を通過するように配置されたロッドの先端部に反力生成用部材が接続された状態で当該反力生成用部材が第１単位アタッチメント又は第２単位アタッチメントに当接することにより、反力生成用部材と第１アタッチメント又は第２アタッチメントとの間にシリンダが連結ピンを各貫通孔内に挿入するのに必要な反力が生成される。このため、前記状態でロッドが縮むのに伴って、シリンダ保持部が各対向部上を摺動しながら、つまり、シリンダが各対向部に対して第１コネクタ及び第２コネクタに近づく方向に相対変位しながら当該シリンダにより連結ピンが各貫通孔内に押し込まれる。よって、従来のように、連結ピンが各貫通孔内に挿入されるときに必要な反力を生じさせるために単位アタッチメントに常設される専用部材（シリンダを固定するための部材）の省略が可能となるので、アタッチメントが軽量化される。   In the present coupling device, since the coupling pin has a cylindrical shape having an internal space, the cylinder holding portion is disposed on these facing portions so as to straddle the first facing portion and the second facing portion, and from the first side. The reaction force generating member is in the state where the reaction force generating member is connected to the inner space of the connecting pin and the tip of the rod disposed so as to pass through each through hole toward the second side. Abutting against the unit attachment or the second unit attachment generates a reaction force necessary for the cylinder to insert the connecting pin into each through hole between the reaction force generating member and the first attachment or the second attachment. Is done. Therefore, as the rod contracts in the above state, the cylinder holding portion slides on each facing portion, that is, the cylinder moves relative to each facing portion in the direction approaching the first connector and the second connector. The connecting pin is pushed into each through hole by the cylinder while being displaced. Therefore, as in the past, it is possible to omit a dedicated member (member for fixing the cylinder) that is permanently installed in the unit attachment in order to generate a reaction force required when the connecting pin is inserted into each through hole. Therefore, the attachment is lightened.

この場合において、前記シリンダ保持部は、前記シリンダに接続されており、前記第１対向部と前記第２対向部に跨る跨り部と、前記跨り部に接続されており、前記第１対向部及び前記第２対向部に当接することにより前記交差方向と直交する方向についての前記跨り部の位置を規定する位置規定部と、を有することが好ましい。   In this case, the cylinder holding portion is connected to the cylinder, is connected to the straddling portion straddling the first facing portion and the second facing portion, and is connected to the straddling portion, and the first facing portion and It is preferable to have a position defining portion that defines the position of the straddling portion in a direction orthogonal to the intersecting direction by contacting the second facing portion.

このようにすれば、シリンダが各対向部に対して第１コネクタ及び第２コネクタに近づく方向に相対変位するときに当該シリンダが前記交差方向と直交する方向に変位するのが規制されるので、シリンダによる連結ピンの押込みが安定する。   In this way, the cylinder is restricted from being displaced in a direction perpendicular to the intersecting direction when the cylinder is relatively displaced in a direction approaching the first connector and the second connector with respect to each facing portion. Pushing of connecting pin by cylinder is stable.

また、本発明は、前記連結装置と、前記連結ピンにより互いに連結された前記単位アタッチメントから当該連結ピンを引き抜くときに用いられる抜取ユニットと、を備える連結及び切り離し装置であって、前記抜取ユニットは、前記ロッドの先端部に対して着脱自在に接続可能で、かつ、前記交差方向について前記第１側から前記第２側に向かって前記連結ピンの内部空間を通過するように配置された前記ロッドの先端部に接続された状態で前記ロッドが縮むのに伴って前記第１貫通孔内及び前記第２貫通孔内を通りながら前記連結ピンを前記シリンダ側に押出可能な押出部材と、前記連結ピンの軸方向と直交する方向について当該連結ピンの外側において前記シリンダと前記第１コネクタ及び前記第２コネクタとの間に介在した状態で前記シリンダと前記第１コネクタ又は前記第２コネクタとに当接することにより、前記ロッドが縮められるときに前記シリンダが前記連結ピンの軸方向について前記第１コネクタ及び前記第２コネクタから離間した位置から前記第１コネクタ及び前記第２コネクタに近づくのを規制するとともに、前記ロッドが縮むのに伴って当該ロッドの先端部に接続された前記押出部材が前記貫通孔内を通りながら前記連結ピンを前記シリンダ側に押し出すのに必要な反力を生じさせる介在部材と、を有する、連結及び切り離し装置を提供する。   Further, the present invention is a connecting and disconnecting device comprising the connecting device and a sampling unit used when pulling out the connecting pin from the unit attachments connected to each other by the connecting pin, wherein the sampling unit is The rod is detachably connectable to the tip of the rod and is disposed so as to pass through the internal space of the connecting pin from the first side toward the second side in the intersecting direction. An extruding member capable of extruding the connecting pin to the cylinder side while passing through the first through hole and the second through hole as the rod contracts while being connected to the tip of In a state of being interposed between the cylinder and the first connector and the second connector on the outside of the connecting pin in a direction orthogonal to the axial direction of the pin. The cylinder is brought into contact with the first connector or the second connector from the position where the cylinder is separated from the first connector and the second connector in the axial direction of the connecting pin when the rod is contracted. While restricting approaching the first connector and the second connector, the push-out member connected to the tip of the rod passes through the through-hole as the rod contracts, and the connecting pin is inserted into the cylinder. And an interposing member for generating a reaction force necessary to push the side.

この装置では、単位アタッチメントから連結ピンを抜き取るために従来必要であった前記専用部材を用いることなく各単位アタッチメントから連結ピンを抜き取ることが可能となる。具体的に、シリンダと第１コネクタ及び第２コネクタとの間に介在部材が配置され、かつ、連結ピンの内部空間を通過するように配置されたロッドの先端部に押出部材が接続された状態でロッドが縮められることにより、介在部材は、シリンダと第１コネクタ又は第２コネクタとに当接することでシリンダが各コネクタに近づくのを規制しながら押出部材が連結ピンをシリンダ側に向けて押圧するのに必要な反力を生成する。よって、ロッドが縮むのに伴って連結ピンが各貫通孔から押し出される。   In this apparatus, it is possible to extract the connecting pin from each unit attachment without using the dedicated member that has been conventionally required for extracting the connecting pin from the unit attachment. Specifically, an interposition member is arranged between the cylinder and the first connector and the second connector, and the push member is connected to the tip of the rod arranged to pass through the internal space of the connecting pin When the rod is shrunk, the interposition member abuts against the cylinder and the first connector or the second connector, thereby restricting the cylinder from approaching each connector, and the pushing member presses the connecting pin toward the cylinder. The reaction force necessary to do is generated. Therefore, the connecting pin is pushed out from each through hole as the rod contracts.

この場合において、前記介在部材は、前記シリンダに対し当該シリンダの軸方向と直交する方向から係合可能な形状を有することが好ましい。   In this case, it is preferable that the interposition member has a shape that can be engaged with the cylinder from a direction orthogonal to the axial direction of the cylinder.

このようにすれば、シリンダに対し当該シリンダの軸方向と直交する方向から介在部材を係合させることができるので、シリンダへの介在部材の取り付けが容易になる。   If it does in this way, since an interposition member can be engaged with a cylinder from the direction orthogonal to the axial direction of the said cylinder, attachment of the interposition member to a cylinder becomes easy.

また、本発明は、建設機械のアタッチメントを構成する第１単位アタッチメント及び第２単位アタッチメントであって、前記第１単位アタッチメントとして、前記第２単位アタッチメントと対向するとともに当該第１単位アタッチメントと前記第２単位アタッチメントとが互いに対向する方向と交差する交差方向に延びる第１対向部を含む第１本体と、前記第１本体のうち前記第１対向部が位置する側の端部に接続された第１コネクタであって当該第１コネクタを前記交差方向に貫通する第１貫通孔を有する第１コネクタと、を有するものと、前記第２単位アタッチメントとして、前記第１単位アタッチメントと対向するとともに前記交差方向に延びる第２対向部を含む第２本体と、前記第２本体のうち前記第２対向部が位置する側の端部に接続された第２コネクタであって当該第２コネクタを前記交差方向に貫通する第２貫通孔を有する第２コネクタと、を有するものと、を連結する連結方法であって、内部空間を取り囲む内周面を有する筒状に形成されており、前記第１貫通孔内及び前記第２貫通孔内に挿入されることが可能な連結ピンを用意する工程と、前記第１単位アタッチメントの第１貫通孔と前記第２単位アタッチメントの第２貫通孔とが前記交差方向に重なるように前記第１単位アタッチメント及び前記第２単位アタッチメントとを配置する工程と、前記交差方向について前記第１コネクタ及び前記第２コネクタを基準として前記第１対向部及び前記第２対向部が位置する第１側から当該第１側と反対に位置する第２側に向かって前記連結ピンの内部空間及び各貫通孔内にロッドを挿通した後、当該ロッドの先端部に、前記第１アタッチメント又は前記第２アタッチメントに対して前記第２側から前記第１側に当接する反力生成用部材を接続することにより、シリンダが各対向部に対して各コネクタに近づく方向に相対変位しながら前記連結ピンを各貫通孔内に押し込むのに必要な反力が前記第１アタッチメント又は前記第２アタッチメントと前記反力生成用部材との間に生じる反力発生状態を形成する工程と、前記反力発生状態で前記ロッドを縮めることにより、前記シリンダを各対向部に対して前記第１コネクタ及び前記第２コネクタ側に相対変位させながら当該シリンダで前記連結ピンを押圧し、当該連結ピンを前記第１貫通孔内及び前記第２貫通孔内に挿入することにより前記第１単位アタッチメントと前記第２単位アタッチメントとが互いに連結する工程と、を含む、連結方法を提供する。   Further, the present invention is a first unit attachment and a second unit attachment that constitute an attachment of a construction machine, wherein the first unit attachment is opposed to the second unit attachment and the first unit attachment and the first unit attachment. A first body including a first facing portion extending in a crossing direction intersecting a direction in which the two unit attachments face each other, and a first body connected to an end portion of the first body on the side where the first facing portion is located. A first connector having a first through hole penetrating the first connector in the intersecting direction, and as the second unit attachment, facing the first unit attachment and the intersecting A second body including a second facing portion extending in a direction, and an end of the second body on the side where the second facing portion is located And a second connector having a second through hole penetrating the second connector in the intersecting direction, and a connection method for connecting the second connector and an inner space surrounding the inner space A step of preparing a connecting pin which is formed in a cylindrical shape having a peripheral surface and can be inserted into the first through hole and the second through hole; and the first through hole of the first unit attachment Disposing the first unit attachment and the second unit attachment such that a hole and a second through hole of the second unit attachment overlap in the intersecting direction; and the first connector and the first in the intersecting direction From the first side where the first opposing portion and the second opposing portion are located with respect to the two connectors toward the second side located opposite to the first side, the internal space of the connecting pin and each penetration After inserting the rod inside, by connecting a reaction force generating member that contacts the first side from the second side to the first attachment or the second attachment to the tip of the rod, The reaction force required to push the connecting pin into each through hole while the cylinder is relatively displaced in the direction approaching each connector with respect to each facing portion is the first attachment or the second attachment and the reaction force generation A step of forming a reaction force generation state generated between the member and the member, and the rod is contracted in the reaction force generation state so that the cylinder is relatively opposed to the first connector and the second connector side with respect to each facing portion. By pressing the connecting pin with the cylinder while being displaced, and inserting the connecting pin into the first through hole and the second through hole, the first unit attachment member is inserted. And connecting the second unit attachment to each other.

この連結方法では、内部空間を有する筒状に形成された連結ピンが用いられるとともにその連結ピンの内部空間を前記第１側から前記第２側に向かって通過するように配置されたロッドの先端に反力生成用部材が接続され、この反力生成用部材を第１アタッチメント又は第２アタッチメントに対して前記第２側から前記第１側に当接させることによって連結ピンを各貫通孔内に挿入するのに必要な反力を生じさせる。このため、その状態（反力発生状態）でロッドが縮められることにより、シリンダが各対向部に対して第１コネクタ及び前記第２コネクタに近づく方向に相対変位しながら当該シリンダにより連結ピンが各貫通孔内に押し込まれる。よって、従来のように、連結ピンが各貫通孔内に挿入されるときに必要な反力を生じさせるために単位アタッチメントに常設される専用部材（シリンダを固定するための部材）の省略が可能となるので、アタッチメントが軽量化される。   In this connection method, a connecting pin formed in a cylindrical shape having an internal space is used, and a tip of a rod arranged so as to pass through the internal space of the connecting pin from the first side toward the second side. The reaction force generating member is connected to the first attachment or the second attachment, and the connection pin is brought into each through hole by bringing the reaction force generation member into contact with the first attachment from the second side to the first attachment. The reaction force necessary for insertion is generated. For this reason, when the rod is contracted in this state (reaction force generation state), the cylinder is relatively displaced in the direction approaching the first connector and the second connector with respect to each opposing portion, and the connecting pin is moved by the cylinder. It is pushed into the through hole. Therefore, as in the past, it is possible to omit a dedicated member (member for fixing the cylinder) that is permanently installed in the unit attachment in order to generate a reaction force required when the connecting pin is inserted into each through hole. Therefore, the attachment is lightened.

また、本発明は、建設機械のアタッチメントを構成する第１単位アタッチメント及び第２単位アタッチメントであって、前記第１単位アタッチメントとして、前記第２単位アタッチメントと対向するとともに当該第１単位アタッチメントと前記第２単位アタッチメントとが互いに対向する方向と交差する交差方向に延びる第１対向部を含む第１本体と、前記第１本体のうち前記第１対向部が位置する側の端部に接続された第１コネクタであって当該第１コネクタを前記交差方向に貫通する第１貫通孔を有する第１コネクタと、を有するものと、前記第２単位アタッチメントとして、前記第１単位アタッチメントと対向するとともに前記交差方向に延びる第２対向部を含む第２本体と、前記第２本体のうち前記第２対向部が位置する側の端部に接続された第２コネクタであって当該第２コネクタを前記交差方向に貫通する第２貫通孔を有する第２コネクタと、を有するものの前記第１貫通孔と前記第２貫通孔とに対し、内部空間を取り囲む内周面を有する筒状に形成されており前記第１貫通孔内及び前記第２貫通孔内に挿入されることが可能な連結ピンを挿入するための挿入装置であって、前記連結ピンの内部空間を挿通可能な形状を有するロッドと、前記ロッドを伸縮させるシリンダと、前記第１単位アタッチメントの第１貫通穴と前記第２単位アタッチメントの第２貫通穴とが前記交差方向に重なった状態において、前記シリンダが前記第１対向部及び前記第２対向部に対して前記交差方向に沿って相対変位可能となるように当該第１対向部及び当該第２対向部に跨った状態で前記シリンダを保持するシリンダ保持部と、前記ロッドの先端部に対して着脱自在に接続可能で、かつ、前記交差方向について前記第１コネクタ及び前記第２コネクタを基準として前記第１対向部及び前記第２対向部が位置する第１側から当該第１側と反対に位置する第２側に向かって前記連結ピンの内部空間及び各貫通孔内を通過するように配置された前記ロッドの先端部に接続された状態で前記第１単位アタッチメント又は前記第２単位アタッチメントに対して前記第２側から前記第１側に向かって当接することにより、前記シリンダ保持部が前記第１対向部及び前記第２対向部に跨った状態において前記ロッドが縮むのに伴って前記シリンダが各対向部に対して前記第１コネクタ及び前記第２コネクタに向かって相対変位しながら前記連結ピンを前記第１貫通孔及び前記第２貫通孔内に挿入するのに必要な反力を生じさせる反力生成用部材と、を備える、挿入装置を提供する。   Further, the present invention is a first unit attachment and a second unit attachment that constitute an attachment of a construction machine, wherein the first unit attachment is opposed to the second unit attachment and the first unit attachment and the first unit attachment. A first body including a first facing portion extending in a crossing direction intersecting a direction in which the two unit attachments face each other, and a first body connected to an end portion of the first body on the side where the first facing portion is located. A first connector having a first through hole penetrating the first connector in the intersecting direction, and as the second unit attachment, facing the first unit attachment and the intersecting A second body including a second facing portion extending in a direction, and an end of the second body on the side where the second facing portion is located A second connector having a second through hole penetrating the second connector in the intersecting direction, the inner portion of the second connector having an inner portion An insertion device for inserting a connecting pin which is formed in a cylindrical shape having an inner peripheral surface surrounding a space and can be inserted into the first through hole and the second through hole, A rod having a shape that can be inserted through the internal space of the connecting pin, a cylinder that expands and contracts the rod, a first through hole of the first unit attachment, and a second through hole of the second unit attachment are in the intersecting direction. In the overlapped state, the cylinder straddles the first facing portion and the second facing portion so as to be relatively displaceable along the intersecting direction with respect to the first facing portion and the second facing portion. Before A cylinder holding portion for holding a cylinder, and a detachable connection to a tip portion of the rod, and the first facing portion and the first connector with respect to the intersecting direction with respect to the first connector and the second connector. From the first side where the two opposing parts are located toward the second side located opposite to the first side, the inner space of the connecting pin and the tip of the rod arranged to pass through each through hole The cylinder holding portion is brought into contact with the first unit attachment or the second unit attachment in a connected state from the second side toward the first side, whereby the cylinder holding portion is moved to the first facing portion and the second unit attachment. The cylinder is relatively displaced toward the first connector and the second connector with respect to each facing portion as the rod contracts in a state of straddling the facing portion. There is provided an insertion device comprising: a reaction force generating member that generates a reaction force necessary to insert a pin into the first through hole and the second through hole.

本挿入装置では、シリンダ保持部が第１対向部及び第２対向部に跨るようにこれら対向部上に配置され、かつ、前記第１側から前記第２側に向かって連結ピンの内部空間及び各貫通孔内を通過するように配置されたロッドの先端部に反力生成用部材が接続された状態で当該反力生成用部材が第１単位アタッチメント又は第２単位アタッチメントに当接することにより、反力生成用部材と第１アタッチメント又は第２アタッチメントとの間にシリンダが連結ピンを各貫通孔内に挿入するのに必要な反力が生成される。このため、前記状態でロッドが縮むのに伴って、シリンダ保持部が各対向部上を摺動しながら、つまり、シリンダが各対向部に対して第１コネクタ及び第２コネクタに近づく方向に相対変位しながら当該シリンダにより連結ピンが各貫通孔内に押し込まれる。よって、従来のように、連結ピンが各貫通孔内に挿入されるときに必要な反力を生じさせるために単位アタッチメントに常設される専用部材（シリンダを固定するための部材）の省略が可能となるので、アタッチメントが軽量化される。   In this insertion device, the cylinder holding portion is disposed on these facing portions so as to straddle the first facing portion and the second facing portion, and the internal space of the connecting pin from the first side toward the second side and When the reaction force generation member is in contact with the first unit attachment or the second unit attachment in a state where the reaction force generation member is connected to the tip of the rod arranged to pass through each through hole, A reaction force necessary for the cylinder to insert the connecting pin into each through hole is generated between the reaction force generating member and the first attachment or the second attachment. Therefore, as the rod contracts in the above state, the cylinder holding portion slides on each facing portion, that is, the cylinder moves relative to each facing portion in the direction approaching the first connector and the second connector. The connecting pin is pushed into each through hole by the cylinder while being displaced. Therefore, as in the past, it is possible to omit a dedicated member (member for fixing the cylinder) that is permanently installed in the unit attachment in order to generate a reaction force required when the connecting pin is inserted into each through hole. Therefore, the attachment is lightened.

以上のように、本発明によれば、アタッチメントの著しい重量化を回避しながら単位アタッチメント同士を連結することが可能な連結装置及び連結方法を提供することができる。   As described above, according to the present invention, it is possible to provide a connecting device and a connecting method capable of connecting unit attachments while avoiding a significant weight increase of attachments.

本発明の第一実施形態の建設機械の側面図である。It is a side view of the construction machine of the first embodiment of the present invention. 図１に示される建設機械の単位アタッチメントの平面図である。It is a top view of the unit attachment of the construction machine shown by FIG. 図２に示される単位アタッチメントの側面図である。It is a side view of the unit attachment shown by FIG. 連結ピンを挿入する前の状態の連結装置の近傍の拡大図である。It is an enlarged view of the vicinity of the coupling device in the state before inserting the coupling pin. 連結ピンを挿入した後の状態の連結装置の近傍の拡大図である。It is an enlarged view of the vicinity of the coupling device in the state after inserting the coupling pin. 図４のＶＩ−ＶＩ線での断面図である。It is sectional drawing in the VI-VI line of FIG. 図４のＶＩＩ−ＶＩＩ線から見た図である。It is the figure seen from the VII-VII line of FIG. 連結ピンを抜く前の状態の連結及び切り離し装置の近傍の拡大図である。It is an enlarged view of the vicinity of the connection and disconnection device in a state before the connection pin is pulled out. 連結ピンを抜いた後の状態の連結及び切り離し装置の近傍の拡大図である。It is an enlarged view of the vicinity of the connection and disconnection device after the connection pin is pulled out. 図８のＸ−Ｘ線での断面図である。It is sectional drawing in the XX line of FIG. 図８のＸＩ−ＸＩ線での断面図である。It is sectional drawing in the XI-XI line of FIG. 図８のＸＩＩ−ＸＩＩ線での断面図である。It is sectional drawing in the XII-XII line | wire of FIG. 介在部材の反力生成部の変形例を示す図である。It is a figure which shows the modification of the reaction force production | generation part of an interposed member. 介在部材の反力生成部の変形例を示す図である。It is a figure which shows the modification of the reaction force production | generation part of an interposed member. 介在部材の規制部及びシリンダの当接部の変形例を示す図である。It is a figure which shows the modification of the control part of an interposed member, and the contact part of a cylinder. 介在部材の規制部、シリンダの凹部形成部及び当接部の変形例を示す図である。It is a figure which shows the modification of the control part of an interposed member, the recessed part formation part of a cylinder, and a contact part.

本発明の一実施形態の連結装置１０について、図面を参照しながら説明する。   A connecting device 10 according to an embodiment of the present invention will be described with reference to the drawings.

図１は、本実施形態の建設機械１００の全体構成を示す。なお、図１には、建設機械１００としてクレーンが示されている。この建設機械１００は、建設機械本体１０２と、建設機械本体１０２に装着されたアタッチメント１０４と、を備えている。アタッチメント１０４は、建設機械本体１０２に起伏方向に回動可能となるように装着されたブーム１０６と、ブーム１０６の先端に接続されたジブ１０８と、を有している。   FIG. 1 shows an overall configuration of a construction machine 100 according to the present embodiment. In FIG. 1, a crane is shown as the construction machine 100. The construction machine 100 includes a construction machine main body 102 and an attachment 104 attached to the construction machine main body 102. The attachment 104 includes a boom 106 that is mounted on the construction machine main body 102 so as to be rotatable in the up-and-down direction, and a jib 108 that is connected to the tip of the boom 106.

ブーム１０６は、複数の単位アタッチメントに相当する複数の単位ブーム１０６Ａ〜１０６Ｆを有している。ブーム１０６は、各単位ブーム１０６Ａ〜１０６Ｆが直列に接続されることにより構成されている。本実施形態では、複数の単位ブームは、基端ブーム１０６Ａと、第１中間ブーム１０６Ｂと、第２中間ブーム１０６Ｃと、第３中間ブーム１０６Ｄと、第４中間ブーム１０６Ｅと、先端ブーム１０６Ｆと、を有している。基端ブーム１０６Ａは、建設機械本体１０２に装着される。この基端ブーム１０６Ａに対し、第１中間ブーム１０６Ｂ〜第４中間ブーム１０６Ｅがこの順に直列に接続される。先端ブーム１０６Ｆは、第４中間ブーム１０６Ｅに接続される。   The boom 106 has a plurality of unit booms 106A to 106F corresponding to a plurality of unit attachments. The boom 106 is configured by connecting the unit booms 106A to 106F in series. In the present embodiment, the plurality of unit booms include a proximal boom 106A, a first intermediate boom 106B, a second intermediate boom 106C, a third intermediate boom 106D, a fourth intermediate boom 106E, and a distal boom 106F. have. The proximal boom 106A is attached to the construction machine main body 102. The first intermediate boom 106B to the fourth intermediate boom 106E are connected in series to the base end boom 106A in this order. The tip boom 106F is connected to the fourth intermediate boom 106E.

第１中間ブーム１０６Ｂ〜第４中間ブーム１０６Ｅは、本実施形態では、互いに同じ形状を有している。ただし、これらの形状（長さや断面積等）は、互いに異なっていてもよい。図２及び図３には、第１中間ブーム１０６Ｂが示されている。第１中間ブーム１０６Ｂは、中間ブーム本体１０６ｂと、第１コネクタ１１６と、第２コネクタ１１８と、を有している。中間ブーム本体１０６ｂは、上下２組の一対の主柱１１０（４本の主柱）と、第１副柱１１２と、第２副柱１１４と、斜材１１７と、を有している。   In the present embodiment, the first intermediate boom 106B to the fourth intermediate boom 106E have the same shape. However, these shapes (length, cross-sectional area, etc.) may be different from each other. 2 and 3 show the first intermediate boom 106B. The first intermediate boom 106B includes an intermediate boom body 106b, a first connector 116, and a second connector 118. The intermediate boom body 106b has two pairs of upper and lower main pillars 110 (four main pillars), a first sub pillar 112, a second sub pillar 114, and an oblique member 117.

図２に示されるように、第１副柱１１２は、各主柱１１０と直交する姿勢（第１中間ブーム１０６Ｂと第２中間ブーム１０６Ｃとが互いに対向する方向と直交する姿勢）で一対の主柱１１０の長手方向の一端部同士を接続している。第２副柱１１４は、各主柱１１０と直交する姿勢（第１副柱１１２と平行な姿勢）で一対の主柱１１０の長手方向の他端部同士を接続している。ここで、第１中間ブーム１０６Ｂの第１副柱１１２は、一対の主柱１１０のうち第２中間ブーム１０６Ｃと対向する側の端部に接続されており、第２中間ブーム１０６Ｃの第２副柱１１４は、一対の主柱１１０のうち第１中間ブーム１０６Ｂと対向する側の端部に接続されている。つまり、第１副柱１１２は、第１対向部を構成し、第２副柱１１４は、第２対向部を構成し、中間ブーム本体１０６ｂは、第１本体を構成する。斜材１１７は、一対の主柱１１０及び各副柱１１２，１１４の双方に交差する姿勢で一対の主柱１１０に接続されている。各副柱１１２，１１４及び各斜材１１７は、円筒状の外周面を有している。   As shown in FIG. 2, the first sub-pillar 112 has a pair of main pillars in a posture perpendicular to each main pillar 110 (a posture perpendicular to the direction in which the first intermediate boom 106B and the second intermediate boom 106C face each other). One end portions of the pillars 110 in the longitudinal direction are connected to each other. The second sub-column 114 connects the other ends in the longitudinal direction of the pair of main columns 110 in a posture orthogonal to each main column 110 (a posture parallel to the first sub-column 112). Here, the first sub pillar 112 of the first intermediate boom 106B is connected to the end of the pair of main pillars 110 facing the second intermediate boom 106C, and the second sub boom 112C of the second intermediate boom 106C is connected. The pillar 114 is connected to the end of the pair of main pillars 110 on the side facing the first intermediate boom 106B. That is, the 1st sub pillar 112 comprises a 1st opposing part, the 2nd sub pillar 114 comprises a 2nd opposing part, and the intermediate | middle boom main body 106b comprises a 1st main body. The diagonal member 117 is connected to the pair of main pillars 110 in a posture that intersects both the pair of main pillars 110 and the sub pillars 112 and 114. Each of the sub-pillars 112 and 114 and each of the diagonal members 117 have a cylindrical outer peripheral surface.

第１コネクタ１１６は、主柱１１０の一端部（第１副柱１１２が接続されている側の端部）に接続されている。第１コネクタ１１６は、第１副柱１１２の軸方向と平行な方向について互いに対向する一対の対向片を有している。図３に示されるように、第１コネクタ１１６は、当該第１コネクタ１１６を第１副柱１１２の軸方向と平行な方向に貫通する第１貫通孔１１６ｈを有している。   The first connector 116 is connected to one end of the main pillar 110 (the end on the side to which the first sub pillar 112 is connected). The first connector 116 has a pair of facing pieces that face each other in a direction parallel to the axial direction of the first sub-pillar 112. As shown in FIG. 3, the first connector 116 has a first through hole 116 h that penetrates the first connector 116 in a direction parallel to the axial direction of the first sub-pillar 112.

第２コネクタ１１８は、主柱１１０の他端部（第２副柱１１４が接続されている側の端部）に接続されている。図２に示されるように、第２コネクタ１１８は、第１コネクタ１１６（一対の対向片）に嵌合可能である。図３に示されるように、第２コネクタ１１８は、当該第２コネクタ１１８を第２副柱１１４の軸方向と平行な方向に貫通する第２貫通孔１１８ｈを有している。この第２貫通孔１１８ｈは、第２コネクタ１１８が第１コネクタ１１６に嵌合した状態において、第１貫通孔１１６ｈと第１副柱１１２の軸方向と平行な方向に重なる位置に形成されている。   The second connector 118 is connected to the other end of the main pillar 110 (the end on the side to which the second sub pillar 114 is connected). As shown in FIG. 2, the second connector 118 can be fitted to the first connector 116 (a pair of opposed pieces). As shown in FIG. 3, the second connector 118 has a second through hole 118 h that penetrates the second connector 118 in a direction parallel to the axial direction of the second sub pillar 114. The second through hole 118h is formed at a position that overlaps the first through hole 116h and a direction parallel to the axial direction of the first sub pillar 112 in a state where the second connector 118 is fitted to the first connector 116. .

なお、ジブ１０８は、ブーム１０６と同様の構造を有しているため、このジブ１０８の説明は省略する。   Since the jib 108 has the same structure as the boom 106, the description of the jib 108 is omitted.

次に、連結装置１０について説明する。連結装置１０は、互いに隣接する単位アタッチメント（例えば、第１中間ブーム１０６Ｂ及び第２中間ブーム１０６Ｃ）同士を連結する装置である。この連結装置１０は、連結ピン８０と、挿入装置１２と、を有している。   Next, the coupling device 10 will be described. The connecting device 10 is a device that connects adjacent unit attachments (for example, the first intermediate boom 106B and the second intermediate boom 106C) to each other. The coupling device 10 includes a coupling pin 80 and an insertion device 12.

連結ピン８０は、内部空間Ｓ（図４等を参照）を取り囲む内周面を有する筒状である。本実施形態では、連結ピン８０は、円筒状である。連結ピン８０の外径は、各貫通孔１１６ｈ，１１８ｈに挿入可能な寸法に設定されている。   The connecting pin 80 has a cylindrical shape having an inner peripheral surface that surrounds the internal space S (see FIG. 4 and the like). In the present embodiment, the connecting pin 80 is cylindrical. The outer diameter of the connecting pin 80 is set to a dimension that can be inserted into each of the through holes 116h and 118h.

挿入装置１２は、互いに隣接する単位アタッチメント同士が互いに連結されるように連結ピン８０を第１コネクタ１１６及び第２コネクタ１１８に挿入する装置である。挿入装置１２は、シリンダ２０と、ロッド３０と、シリンダ保持部４０と、反力生成用部材５０と、を有している。   The insertion device 12 is a device that inserts the connecting pin 80 into the first connector 116 and the second connector 118 so that adjacent unit attachments are connected to each other. The insertion device 12 includes a cylinder 20, a rod 30, a cylinder holding unit 40, and a reaction force generating member 50.

シリンダ２０は、円筒状を呈するシリンダ本体２２を有している。シリンダ本体２２内には、当該シリンダ本体２２内をロッド室２０ｒとヘッド室２０ｈとに仕切るピストン２１が配置されている。ロッド室２０ｒ内及びヘッド室２０ｈ内には、作動油が供給される。   The cylinder 20 has a cylinder body 22 that has a cylindrical shape. In the cylinder main body 22, a piston 21 that partitions the cylinder main body 22 into a rod chamber 20r and a head chamber 20h is disposed. Hydraulic oil is supplied into the rod chamber 20r and the head chamber 20h.

ロッド３０は、連結ピン８０の内部空間Ｓに挿通されることが可能な形状を有する。ロッド３０の基端部は、ピストン２１に接続されている。ロッド３０の先端部３０ａは、シリンダ本体２２外に位置している。このロッド３０の先端部３０ａには、雄ねじ部が形成されている。ロッド３０は、シリンダ２０により伸縮される。   The rod 30 has a shape that can be inserted into the internal space S of the connecting pin 80. The proximal end portion of the rod 30 is connected to the piston 21. The tip 30 a of the rod 30 is located outside the cylinder body 22. A male screw portion is formed at the tip portion 30 a of the rod 30. The rod 30 is expanded and contracted by the cylinder 20.

シリンダ保持部４０は、シリンダ２０が第１副柱１１２及び第２副柱１１４に対して第１副柱１１２及び第２副柱１１４の軸方向と平行な方向（以下、「挿抜方向」という）に沿って相対変位可能となるように第１副柱１１２及び第２副柱１１４に跨った状態でシリンダ２０を保持する。図６に示されるように、シリンダ保持部４０は、跨り部４２と、位置規定部４４と、を有する。   The cylinder holding portion 40 has a direction in which the cylinder 20 is parallel to the axial direction of the first sub-column 112 and the second sub-column 114 with respect to the first sub-column 112 and the second sub-column 114 (hereinafter referred to as “insertion / removal direction”). The cylinder 20 is held in a state straddling the first sub-column 112 and the second sub-column 114 so as to be relatively displaceable along the first sub-column 112. As shown in FIG. 6, the cylinder holding part 40 includes a straddling part 42 and a position defining part 44.

跨り部４２は、シリンダ本体２２に接続されており、第１副柱１１２と第２副柱１１４に跨る。本実施形態では、跨り部４２は、直線状に延びる形状を有しており、シリンダ本体２２の軸方向と直交する姿勢でシリンダ本体２２の外周面に接続されている。跨り部４２の長さは、各貫通孔１１６ｈ，１１８ｈが挿抜方向に重なる状態（図４に示される状態）における第１副柱１１２及び第２副柱１１４間の距離以上に設定されている。   The straddling portion 42 is connected to the cylinder body 22 and straddles the first sub pillar 112 and the second sub pillar 114. In the present embodiment, the straddling portion 42 has a shape extending linearly, and is connected to the outer peripheral surface of the cylinder body 22 in a posture orthogonal to the axial direction of the cylinder body 22. The length of the straddling portion 42 is set to be equal to or greater than the distance between the first sub-pillar 112 and the second sub-pillar 114 in a state where the through holes 116h and 118h overlap in the insertion / extraction direction (the state shown in FIG. 4).

位置規定部４４は、跨り部４２に接続されており、第１副柱１１２と第２副柱１１４とに当接することにより前記挿抜方向と直交する方向（第１副柱１１２と第２副柱１１４とを結ぶ方向）についてのシリンダ２０（跨り部４２）の位置を規定する。具体的に、位置規定部４４は、前記挿抜方向と直交する方向について各副柱１１２，１１４に対して内側から接触する接触面を有している。この接触面は、各副柱１１２，１１４の外周面に沿うように湾曲する形状を有している。つまり、位置規定部４４が各副柱１１２，１１４に当接することにより、シリンダ２０の前記挿抜方向と直交する方向（第１副柱１１２及び第２副柱１１４を結ぶ方向）への変位が規制される。   The position defining portion 44 is connected to the straddling portion 42 and is in contact with the first sub-column 112 and the second sub-column 114 to thereby intersect the direction perpendicular to the insertion / extraction direction (the first sub-column 112 and the second sub-column). The position of the cylinder 20 (stretching portion 42) with respect to the direction linking to 114) is defined. Specifically, the position defining portion 44 has a contact surface that comes into contact with each of the sub-pillars 112 and 114 in the direction orthogonal to the insertion / extraction direction. The contact surface has a shape that curves along the outer peripheral surface of each of the sub-pillars 112 and 114. That is, when the position defining portion 44 abuts on each of the sub-pillars 112 and 114, the displacement of the cylinder 20 in the direction orthogonal to the insertion / extraction direction (the direction connecting the first sub-column 112 and the second sub-column 114) is restricted. Is done.

反力生成用部材５０は、ロッド３０の先端部３０ａに対して着脱自在に接続可能である。具体的に、反力生成用部材５０は、前記先端部３０ａに形成された雄ねじ部に螺合する雌ねじ部を有している。この反力生成用部材５０は、シリンダ保持部４０が第１副柱１１２及び第２副柱１１４に跨るようにこれら副柱１１２，１１４上に配置され、かつ、前記挿抜方向について第１コネクタ１１６及び第２コネクタ１１８を基準として第１副柱１１２及び第２副柱１１４が位置する第１側から当該第１側と反対に位置する第２側に向かって連結ピン８０の内部空間Ｓ及び各貫通孔１１６ｈ，１１８ｈを通過するように配置されたロッド３０の先端部３０ａに接続された状態（図４に示される状態）で第１コネクタ１１６に対して前記第２側から前記第１側に向かって当接することにより、ロッド３０が縮むのに伴ってシリンダ２０が各副柱１１２，１１４に対して第１コネクタ１１６及び第２コネクタ１１８に向かって相対変位しながら連結ピン８０を第１貫通孔１１６ｈ及び第２貫通孔１１８ｈ内に挿入するのに必要な反力を生じさせる。具体的に、反力生成用部材５０は、前記雌ねじ部を有する反力生成用部材本体５２と、第１コネクタ１１６に当接する当接脚部５４と、を有している。   The reaction force generating member 50 can be detachably connected to the distal end portion 30 a of the rod 30. Specifically, the reaction force generating member 50 has an internal thread portion that is screwed into an external thread portion formed at the distal end portion 30a. The reaction force generating member 50 is disposed on the sub-pillars 112 and 114 so that the cylinder holding portion 40 straddles the first sub-column 112 and the second sub-column 114, and the first connector 116 in the insertion / extraction direction. And the internal space S of the connecting pin 80 and each of the second sub-poles 114 and the second side located opposite to the first side from the first side where the first sub-pillar 112 and the second sub-column 114 114 are located with reference to the second connector 118. From the second side to the first side with respect to the first connector 116 in a state of being connected to the distal end portion 30a of the rod 30 disposed so as to pass through the through holes 116h and 118h (the state shown in FIG. 4). As the rod 30 contracts, the cylinder 20 is relatively displaced toward the first connector 116 and the second connector 118 with respect to the sub-pillars 112 and 114 as the rod 30 contracts. 0 causes a reaction force required to insert the first through hole 116h and the second through hole 118h. Specifically, the reaction force generation member 50 includes a reaction force generation member main body 52 having the female screw portion and a contact leg portion 54 that contacts the first connector 116.

反力生成用部材本体５２は、各貫通孔１１６ｈ，１１８ｈよりも大きな外形を有している。本実施形態では、反力生成用部材本体５２は、図７に示されるように、円板状に形成されている。ただし、反力生成用部材本体５２の形状は、円板状に限られない。反力生成用部材本体５２は、各貫通孔１１６ｈ，１１８ｈよりも大きな外形を有するのであれば、十字状、星形、長方形等に形成されてもよい。この反力生成用部材本体５２の中央に前記雌ねじ部が形成されている。   The reaction force generating member main body 52 has a larger outer shape than the through holes 116h and 118h. In the present embodiment, the reaction force generating member main body 52 is formed in a disk shape as shown in FIG. However, the shape of the reaction force generating member main body 52 is not limited to a disk shape. The reaction force generating member main body 52 may be formed in a cross shape, a star shape, a rectangular shape, or the like as long as it has an outer shape larger than the through holes 116h and 118h. The female thread portion is formed at the center of the reaction force generating member main body 52.

当接脚部５４は、反力生成用部材本体５２の外縁から当該反力生成用部材本体５２の厚さ方向に突出する形状を有している。本実施形態では、当接脚部５４は、円筒状に形成されている。この当接脚部５４は、ロッド３０の先端部３０ａに反力生成用部材本体５２が接続された状態で第１コネクタ１１６の外側面（前記挿抜方向について第１コネクタ１１６及び第２コネクタ１１８を基準として第１副柱１１２及び第２副柱１１４が位置する第１側と反対側の側面）に当接する。ただし、当接脚部５４は、各主柱１１０の外側面に当接する形状であってもよい。   The contact leg portion 54 has a shape protruding from the outer edge of the reaction force generation member main body 52 in the thickness direction of the reaction force generation member main body 52. In the present embodiment, the contact leg portion 54 is formed in a cylindrical shape. The abutment leg portion 54 has an outer surface of the first connector 116 (with the first connector 116 and the second connector 118 in the insertion / extraction direction) in a state where the reaction force generating member main body 52 is connected to the tip portion 30a of the rod 30. As a reference, the first sub pillar 112 and the second sub pillar 114 are in contact with a side surface opposite to the first side. However, the contact leg portion 54 may have a shape that contacts the outer surface of each main pillar 110.

次に、互いに隣接する第１単位アタッチメント及び第２単位アタッチメント同士を連結する方法について説明する。以下、図４及び図５を参照しながら、第１単位アタッチメントが第１中間ブーム１０６Ｂであり、第２単位アタッチメントが第２中間ブーム１０６Ｃである場合について説明する。この連結方法は、連結ピン用意工程と、配置工程と、反力発生状態形成工程と、連結工程と、を含む。   Next, a method for connecting the first unit attachment and the second unit attachment adjacent to each other will be described. Hereinafter, the case where the first unit attachment is the first intermediate boom 106B and the second unit attachment is the second intermediate boom 106C will be described with reference to FIGS. This connection method includes a connection pin preparation step, an arrangement step, a reaction force generation state formation step, and a connection step.

連結ピン用意工程では、前記連結ピン８０、すなわち、内部空間Ｓを取り囲む内周面を有し円筒状を呈する連結ピン８０が用意される。   In the connecting pin preparing step, the connecting pin 80, that is, the connecting pin 80 having an inner peripheral surface surrounding the inner space S and having a cylindrical shape is prepared.

配置工程では、第１中間ブーム１０６Ｂの第１貫通穴１１６ｈと第２中間ブーム１０６Ｃの第２貫通穴１１８ｈとが前記挿抜方向に重なるように第１中間ブーム１０６Ｂと第２中間ブーム１０６Ｃとが配置される。   In the arrangement step, the first intermediate boom 106B and the second intermediate boom 106C are arranged such that the first through hole 116h of the first intermediate boom 106B and the second through hole 118h of the second intermediate boom 106C overlap in the insertion / removal direction. Is done.

反力発生状態形成工程では、シリンダ保持部４０が第１副柱１１２及び第２副柱１１４に跨るようにこれら副柱１１２，１１４上に配置され、かつ、前記第１側から前記第２側に向かって連結ピン８０の内部空間Ｓ及び各貫通孔１１６ｈ，１１８ｈを通過するように配置されたロッド３０の先端部３０ａに反力生成用部材５０が接続される。そして、反力生成用部材５０が第１中間ブーム１０６Ｂの第１コネクタ１１６の外側面に当接することにより、シリンダ２０が各副柱１１２，１１４に対して各コネクタ１１６，１１８に近づく方向に相対変位しながら連結ピン８０を各貫通孔１１６ｈ，１１８ｈ内に挿入するのに必要な反力が第１コネクタ１１６と反力生成用部材５０との間に生じる反力発生状態が形成される。   In the reaction force generation state forming step, the cylinder holding portion 40 is disposed on the sub-pillars 112 and 114 so as to straddle the first sub-pillar 112 and the second sub-pillar 114, and from the first side to the second side. The reaction force generating member 50 is connected to the distal end portion 30a of the rod 30 disposed so as to pass through the internal space S of the connecting pin 80 and the through holes 116h and 118h. The reaction force generating member 50 abuts against the outer surface of the first connector 116 of the first intermediate boom 106B, so that the cylinder 20 is relatively moved toward the connectors 116 and 118 with respect to the auxiliary pillars 112 and 114. A reaction force generation state in which a reaction force necessary to insert the connecting pin 80 into each of the through holes 116 h and 118 h while being displaced occurs between the first connector 116 and the reaction force generating member 50 is formed.

連結工程では、前記反力発生状態においてロッド３０が縮められる（ロッド室２０ｒに作動油が供給される）ことにより、シリンダ２０が各副柱１１２，１１４に対して第１コネクタ１１６及び第２コネクタ１１８側に相対変位しながら連結ピン８０を押圧し、当該連結ピン８０を各貫通孔１１６ｈ，１１８ｈ内に挿入することにより第１中間ブーム１０６Ｂと第２中間ブーム１０６Ｃとが互いに連結される。よって、従来必要であった専用部材、すなわち、連結ピンが各貫通孔内に挿入されるときに必要な反力を生じさせるために単位アタッチメントに常設される部材（シリンダを固定するための部材）の省略が可能となるので、アタッチメントが軽量化される。   In the connecting step, the rod 30 is contracted in the reaction force generation state (operating oil is supplied to the rod chamber 20r), so that the cylinder 20 is connected to the sub-columns 112 and 114 by the first connector 116 and the second connector. The first intermediate boom 106 </ b> B and the second intermediate boom 106 </ b> C are connected to each other by pressing the connecting pin 80 while being relatively displaced toward the 118 side and inserting the connecting pin 80 into the through holes 116 h and 118 h. Therefore, a dedicated member that has been conventionally required, that is, a member that is permanently installed in the unit attachment to generate a reaction force required when the connecting pin is inserted into each through hole (a member for fixing the cylinder). Can be omitted, so the attachment is lightened.

また、位置規定部４４が各副柱１１２，１１４に接触しているため、シリンダ２０が各副柱１１２，１１４に対して第１コネクタ１１６及び第２コネクタ１１８に近づく方向に相対変位するときに当該シリンダ２０が各副柱１１２，１１４の軸方向と直交する方向に変位するのが規制される。よって、シリンダ２０による連結ピン８０の押込みが安定する。   In addition, since the position defining portion 44 is in contact with each of the sub-pillars 112 and 114, the cylinder 20 is relatively displaced with respect to each of the sub-pillars 112 and 114 in a direction approaching the first connector 116 and the second connector 118. The cylinder 20 is restricted from being displaced in a direction orthogonal to the axial direction of each of the sub pillars 112 and 114. Therefore, the pushing of the connecting pin 80 by the cylinder 20 is stabilized.

なお、連結ピン８０の挿入完了後、反力生成用部材５０がロッド３０の先端部３０ａから取り外され、ロッド３０が連結ピン８０内から抜かれる。   After the insertion of the connecting pin 80 is completed, the reaction force generating member 50 is removed from the distal end portion 30a of the rod 30, and the rod 30 is removed from the connecting pin 80.

次に、図８〜図１２を参照しながら、連結及び切り離し装置について説明する。連結及び切り離し装置は、前記連結装置１０と、互いに隣接する単位アタッチメント（例えば、第１中間ブーム１０６Ｂ及び第２中間ブーム１０６Ｃ）に装着された連結ピン８０を引き抜く（取外す）ときに用いられる引抜ユニット６０と、を備えている。引抜ユニット６０は、押出部材６５と、介在部材７０と、を有している。   Next, the connection and disconnection device will be described with reference to FIGS. The connecting and disconnecting device is used when the connecting device 10 and the connecting pin 80 attached to the unit attachments (for example, the first intermediate boom 106B and the second intermediate boom 106C) adjacent to each other are extracted (removed). 60. The drawing unit 60 includes an extrusion member 65 and an interposition member 70.

押出部材６５は、ロッド３０の先端部３０ａに着脱自在に接続可能である。具体的に、押出部材６５は、前記先端部３０ａに形成された雄ねじ部に螺合する雌ねじ部を有している。押出部材６５は、シリンダ保持部４０が第１副柱１１２及び第２副柱１１４に跨るようにこれら副柱１１２，１１４上に配置され、かつ、前記第１側から前記第２側に向かって連結ピン８０の内部空間Ｓ及び各貫通孔１１６ｈ，１１８ｈを通過するように配置されたロッド３０の先端部３０ａに接続された状態において、ロッド３０が縮むのに伴って第１貫通孔１１６ｈ及び第２貫通孔１１８ｈ内を通りながら連結ピン８０をシリンダ２０側に押出可能である。具体的に、押出部材６５は、図１２に示されるように、連結ピン８０の外径よりも小さくかつ連結ピン８０の内径よりも大きな直径を有する円板状に形成されている。つまり、押出部材６５は、ロッド３０の先端部３０ａに接続された状態でロッド３０が縮められたときに、連結ピン８０の外端面（前記挿抜方向について第１コネクタ１１６及び第２コネクタ１１８を基準として第１副柱１１２及び第２副柱１１４が位置する側と反対側の端面）をシリンダ２０に向かって押圧する。なお、押出部材６５の形状は、円板状に限られない。押出部材６５は、第１貫通孔１１６ｈ及び第２貫通孔１１８ｈ内を通りながら連結ピン８０をシリンダ２０側に押出可能であれば、十字状、星形、長方形等に形成されてもよい。   The pushing member 65 can be detachably connected to the distal end portion 30 a of the rod 30. Specifically, the pushing member 65 has a female screw portion that is screwed into a male screw portion formed at the tip portion 30a. The pushing member 65 is disposed on the sub pillars 112 and 114 so that the cylinder holding portion 40 straddles the first sub pillar 112 and the second sub pillar 114, and from the first side toward the second side. In the state connected to the inner space S of the connecting pin 80 and the tip 30a of the rod 30 disposed so as to pass through the through holes 116h and 118h, the first through hole 116h and the first The connecting pin 80 can be pushed out to the cylinder 20 side while passing through the two through holes 118h. Specifically, as shown in FIG. 12, the pushing member 65 is formed in a disk shape having a diameter smaller than the outer diameter of the connecting pin 80 and larger than the inner diameter of the connecting pin 80. That is, when the rod 30 is contracted in a state where it is connected to the distal end portion 30a of the rod 30, the push-out member 65 is based on the outer end surface of the connecting pin 80 (the first connector 116 and the second connector 118 with respect to the insertion / extraction direction). The end face on the opposite side to the side where the first sub pillar 112 and the second sub pillar 114 are located) is pressed toward the cylinder 20. The shape of the push member 65 is not limited to a disk shape. The pushing member 65 may be formed in a cross shape, a star shape, a rectangular shape, or the like as long as the connecting pin 80 can be pushed out to the cylinder 20 side while passing through the first through hole 116h and the second through hole 118h.

介在部材７０は、シリンダ２０と各１コネクタ１１６，１１８との間に介在することにより、ロッド３０が縮められるときにシリンダ本体２２が各コネクタ１１６，１１８から離間した位置から挿抜方向に沿って各コネクタ１１６，１１８に近づくのを規制するとともに、ロッド３０が縮むのに伴って先端部３０ａに接続された押出部材６５が連結ピン８０をシリンダ２０側に押し出すのに必要な反力を生じさせる。具体的に、介在部材７０は、規制部７２と、反力生成部７４と、を有している。   The interposition member 70 is interposed between the cylinder 20 and each of the connectors 116 and 118 so that when the rod 30 is contracted, the cylinder body 22 is separated from the connectors 116 and 118 along the insertion / removal direction. While restricting the approach to the connectors 116 and 118, as the rod 30 contracts, the pushing member 65 connected to the tip 30a generates a reaction force required to push the connecting pin 80 toward the cylinder 20 side. Specifically, the interposition member 70 includes a restriction unit 72 and a reaction force generation unit 74.

規制部７２は、シリンダ本体２２に対して当該シリンダ本体２２の軸方向と直交する方向から係合可能な形状を有している。つまり、規制部７２は、シリンダ本体２２の外周面の一部を露出させるとともにシリンダ本体２２の外周面の残りの部位を覆う。具体的に、図１０に示されるように、規制部７２は、シリンダ本体２２の外周面に沿うように湾曲する形状（略Ｕ字状）に形成されている。なお、図１０では、シリンダ本体２２の内部の詳細が省略され、斜線で示されている。   The restricting portion 72 has a shape that can be engaged with the cylinder body 22 from a direction orthogonal to the axial direction of the cylinder body 22. That is, the restricting portion 72 exposes a part of the outer peripheral surface of the cylinder body 22 and covers the remaining part of the outer peripheral surface of the cylinder body 22. Specifically, as shown in FIG. 10, the restricting portion 72 is formed in a shape (substantially U-shaped) that curves along the outer peripheral surface of the cylinder body 22. In FIG. 10, details inside the cylinder body 22 are omitted, and are shown by diagonal lines.

シリンダ２０は、シリンダ本体２２の外周面に接続された当接部２４及び凹部形成部２６をさらに有している。当接部２４は、シリンダ本体２２の外周面から当該シリンダ本体２２の径方向の外向きに張り出す形状を有している。当接部２４は、シリンダ本体２２の周方向の全域にわたって連続する形状を有している。凹部形成部２６は、シリンダ本体２２の軸方向について当接部２４よりもロッド３０の先端部３０ａが位置する側に位置している。凹部形成部２６は、当接部２４と同じ形状を有している。凹部形成部２６と当接部２４との間の寸法は、規制部７２の厚さに設定されている。つまり、凹部形成部２６と当接部２４との間には、規制部７２が嵌まり込むことが可能な凹部が形成されている。   The cylinder 20 further includes a contact portion 24 and a recess forming portion 26 connected to the outer peripheral surface of the cylinder body 22. The contact portion 24 has a shape that projects outward from the outer peripheral surface of the cylinder body 22 in the radial direction of the cylinder body 22. The contact portion 24 has a shape that is continuous over the entire circumferential direction of the cylinder body 22. The recessed portion forming portion 26 is located on the side where the distal end portion 30a of the rod 30 is located with respect to the axial direction of the cylinder body 22 relative to the contact portion 24. The recess forming part 26 has the same shape as the contact part 24. The dimension between the recess forming part 26 and the contact part 24 is set to the thickness of the restricting part 72. That is, a concave portion into which the restricting portion 72 can be fitted is formed between the concave portion forming portion 26 and the contact portion 24.

反力生成部７４は、規制部７２の外縁から当該７２の厚さ方向に突出する形状を有している。反力生成部７４の軸方向の長さは、連結ピン８０のシリンダ２０側の端部がシリンダ２０に当接したときに連結ピン８０の挿入端部が第１コネクタ１１６のうちの内側の対向片の第１貫通孔１１６ｈ内に位置する程度に設定される。図８及び図１１に示されるように、反力生成部７４は、連結ピン８０の外径よりも大きな形状を有する。このため、反力生成部７４の内側を当該反力生成部７４の軸方向に沿って連結ピン８０が変位するのが許容される。   The reaction force generation unit 74 has a shape protruding from the outer edge of the regulation unit 72 in the thickness direction of the 72. The axial length of the reaction force generating portion 74 is such that when the end of the connecting pin 80 on the cylinder 20 side comes into contact with the cylinder 20, the insertion end of the connecting pin 80 faces the inner side of the first connector 116. It is set to such an extent that it is located in the first through hole 116h of the piece. As shown in FIGS. 8 and 11, the reaction force generation unit 74 has a shape larger than the outer diameter of the connecting pin 80. For this reason, the connecting pin 80 is allowed to displace inside the reaction force generation unit 74 along the axial direction of the reaction force generation unit 74.

次に、図８及び図９を参照しながら、第１中間ブーム１０６Ｂの第１貫通孔１１６ｈ及び第２中間ブーム１０６Ｃの第２貫通孔１１８ｈに装着されている連結ピン８０を抜き取る方法（第１中間ブーム１０６Ｂから第２中間ブーム１０６Ｃを切り離す方法）を説明する。   Next, with reference to FIGS. 8 and 9, a method of extracting the connecting pin 80 mounted in the first through hole 116h of the first intermediate boom 106B and the second through hole 118h of the second intermediate boom 106C (first A method for separating the second intermediate boom 106C from the intermediate boom 106B will be described.

連結ピン８０を抜き取る工程では、シリンダ保持部４０が第１副柱１１２及び第２副柱１１４に跨るようにこれら副柱１１２，１１４上に配置され、かつ、各貫通孔１１６ｈ，１１８ｈ内に装着されている連結ピン８０の内部空間Ｓを前記第１側から前記第２側に向かって通過するように配置されたロッド３０の先端部３０ａに押出部材６５が接続される。また、介在部材７０がシリンダ２０と各コネクタ１１６，１１８との間に配置される。具体的に、規制部７２が当接部２４と凹部形成部２６との間の凹部に係合するように介在部材７０がシリンダ本体２２に対して当該シリンダ本体２２の軸方向と直交する方向から取り付けられる。そして、その状態において、ロッド室２０ｒに作動油が供給されることによりロッド３０が縮められる。このとき、介在部材７０は、シリンダ２０の当接部２４と第１コネクタ１１６の内側面とに当接することによってシリンダ２０が各コネクタ１１６，１１８に近づくのを規制しながら押出部材６５が連結ピン８０をシリンダ２０側に向けて押圧するのに必要な反力を生成するので、ロッド３０が縮むのに伴って、連結ピン８０が各貫通孔１１６ｈ，１１８ｈから押し出される。よって、単位アタッチメントから連結ピンを抜き取るために従来必要であった前記専用部材の省略が可能となるので、アタッチメントが軽量化される。   In the step of extracting the connecting pin 80, the cylinder holding portion 40 is disposed on the sub-pillars 112 and 114 so as to straddle the first sub-pillar 112 and the second sub-pillar 114, and is mounted in the through holes 116h and 118h. The pushing member 65 is connected to the distal end portion 30a of the rod 30 that is disposed so as to pass through the internal space S of the connecting pin 80 that is formed from the first side toward the second side. In addition, the interposition member 70 is disposed between the cylinder 20 and the connectors 116 and 118. Specifically, the interposition member 70 from the direction orthogonal to the axial direction of the cylinder main body 22 with respect to the cylinder main body 22 so that the restricting portion 72 engages with the concave portion between the contact portion 24 and the concave portion forming portion 26. It is attached. In this state, the rod 30 is contracted by supplying hydraulic oil to the rod chamber 20r. At this time, the interposition member 70 contacts the contact portion 24 of the cylinder 20 and the inner surface of the first connector 116, thereby restricting the cylinder 20 from approaching each of the connectors 116 and 118, while the push member 65 is connected to the connecting pin. Since a reaction force necessary to press 80 toward the cylinder 20 is generated, the connecting pin 80 is pushed out from the through holes 116h and 118h as the rod 30 contracts. Therefore, the dedicated member, which has been conventionally necessary for extracting the connecting pin from the unit attachment, can be omitted, so that the attachment is lightened.

なお、今回開示された実施形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した実施形態の説明ではなく特許請求の範囲によって示され、さらに特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。   The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

例えば、連結装置１０は、ジブ１０８を構成する単位ジブ同士を連結する際や、基端ブーム１０６Ａと第１中間ブーム１０６Ｂとを連結する際に用いられてもよい。   For example, the coupling device 10 may be used when unit jibs constituting the jib 108 are coupled to each other, or when the proximal boom 106A and the first intermediate boom 106B are coupled.

また、介在部材７０の反力生成部７４は、図１３に示されるように、各コネクタ１１６，１１８の基端部に接触する形状であってもよいし、図１４に示されるように、各主柱１１０に接触する形状であってもよい。   Further, the reaction force generation portion 74 of the interposition member 70 may be shaped to contact the proximal end portions of the connectors 116 and 118 as shown in FIG. 13, or as shown in FIG. The shape which contacts the main pillar 110 may be sufficient.

また、図１５に示されるように、介在部材７０の規制部７２の外径及び内径が反力生成部７４のそれと同じに設定され、シリンダ２０の当接部２４が規制部７２に対して軸方向に当接可能な大きさに設定されてもよい。   Further, as shown in FIG. 15, the outer diameter and inner diameter of the restricting portion 72 of the interposed member 70 are set to be the same as those of the reaction force generating portion 74, and the contact portion 24 of the cylinder 20 is pivoted with respect to the restricting portion 72. You may set to the magnitude | size which can contact | abut to a direction.

また、図１６に示されるように、規制部７２の外径及び内径が反力生成部７４から離間するにしたがって次第に小さくなるように設定され、凹部形成部２６の外径が当接部２４に近づくにしたがって次第に小さくなるように設定され、当接部２４が規制部７２に対して軸方向に当接可能な大きさに設定されてもよい。   In addition, as shown in FIG. 16, the outer diameter and inner diameter of the restricting portion 72 are set to gradually decrease as the distance from the reaction force generating portion 74 increases, and the outer diameter of the concave portion forming portion 26 is set to the contact portion 24. It may be set so as to gradually decrease as it approaches, and the contact portion 24 may be set to a size that can contact the restriction portion 72 in the axial direction.

１０ 連結装置
１２ 挿入装置
２０ シリンダ
３０ ロッド
３０ａ 先端部
４０ シリンダ保持部
４２ 跨り部
４４ 位置規定部
５０ 反力生成用部材
６０ 引抜ユニット
６５ 押出部材
７０ 介在部材
８０ 連結ピン
１００ 建設機械
１０２ 建設機械本体
１０４ アタッチメント
１０６ ブーム
１０６Ａ 基端ブーム（単位アタッチメント）
１０６Ｂ 第１中間ブーム（単位アタッチメント）
１０６ｂ 中間ブーム本体（第１本体）
１０６Ｃ 第２中間ブーム（単位アタッチメント）
１０６Ｄ 第３中間ブーム（単位アタッチメント）
１０６Ｅ 第４中間ブーム（単位アタッチメント）
１０６Ｆ 先端ブーム（単位アタッチメント）
１０８ ジブ
１１０ 主柱
１１２ 第１副柱
１１４ 第２副柱
１１６ 第１コネクタ
１１６ｈ 第１貫通孔
１１８ 第２コネクタ
１１８ｈ 第２貫通孔
Ｓ 内部空間 DESCRIPTION OF SYMBOLS 10 Connection apparatus 12 Insertion apparatus 20 Cylinder 30 Rod 30a Tip part 40 Cylinder holding part 42 Stretching part 44 Position-defining part 50 Reaction force generation member 60 Pull-out unit 65 Extrusion member 70 Interposition member 80 Connection pin 100 Construction machine 102 Construction machine body 104 Attachment 106 Boom 106A Base end boom (unit attachment)
106B 1st intermediate boom (unit attachment)
106b Intermediate boom body (first body)
106C Second intermediate boom (unit attachment)
106D Third intermediate boom (unit attachment)
106E Fourth intermediate boom (unit attachment)
106F Tip boom (unit attachment)
108 Jib 110 Main pillar 112 First sub pillar 114 Second sub pillar 116 First connector 116h First through hole 118 Second connector 118h Second through hole S Internal space

Claims (6)

建設機械のアタッチメントを構成する第１単位アタッチメント及び第２単位アタッチメントであって、前記第１単位アタッチメントとして、前記第２単位アタッチメントと対向するとともに当該第１単位アタッチメントと前記第２単位アタッチメントとが互いに対向する方向と交差する交差方向に延びる第１対向部を含む第１本体と、前記第１本体のうち前記第１対向部が位置する側の端部に接続された第１コネクタであって当該第１コネクタを前記交差方向に貫通する第１貫通孔を有する第１コネクタと、を有するものと、前記第２単位アタッチメントとして、前記第１単位アタッチメントと対向するとともに前記交差方向に延びる第２対向部を含む第２本体と、前記第２本体のうち前記第２対向部が位置する側の端部に接続された第２コネクタであって当該第２コネクタを前記交差方向に貫通する第２貫通孔を有する第２コネクタと、を有するものと、を連結する連結装置であって、
内部空間を取り囲む内周面を有する筒状に形成されており、前記第１貫通孔内及び前記第２貫通孔内に挿入されることが可能な連結ピンと、
前記第１単位アタッチメントと前記第２単位アタッチメントとが互いに連結されるように前記連結ピンを前記第１コネクタ及び前記第２コネクタに挿入する挿入装置と、を備え、
前記挿入装置は、
前記連結ピンの内部空間を挿通可能な形状を有するロッドと、
前記ロッドを伸縮させるシリンダと、
前記第１単位アタッチメントの第１貫通穴と前記第２単位アタッチメントの第２貫通穴とが前記交差方向に重なった状態において、前記シリンダが前記第１対向部及び前記第２対向部に対して前記交差方向に沿って相対変位可能となるように当該第１対向部及び当該第２対向部に跨った状態で前記シリンダを保持するシリンダ保持部と、
前記ロッドの先端部に対して着脱自在に接続可能で、かつ、前記交差方向について前記第１コネクタ及び前記第２コネクタを基準として前記第１対向部及び前記第２対向部が位置する第１側から当該第１側と反対に位置する第２側に向かって前記連結ピンの内部空間及び各貫通孔内を通過するように配置された前記ロッドの先端部に接続された状態で前記第１単位アタッチメント又は前記第２単位アタッチメントに対して前記第２側から前記第１側に向かって当接することにより、前記シリンダ保持部が前記第１対向部及び前記第２対向部に跨った状態において前記ロッドが縮むのに伴って前記シリンダが各対向部に対して前記第１コネクタ及び前記第２コネクタに向かって相対変位しながら前記連結ピンを前記第１貫通孔及び前記第２貫通孔内に挿入するのに必要な反力を生じさせる反力生成用部材と、を備える、連結装置。 A first unit attachment and a second unit attachment constituting an attachment of a construction machine, wherein the first unit attachment is opposed to the second unit attachment and the first unit attachment and the second unit attachment are mutually A first main body including a first facing portion extending in a crossing direction intersecting a facing direction; and a first connector connected to an end portion of the first main body on the side where the first facing portion is located. A first connector having a first through-hole penetrating the first connector in the intersecting direction, and a second facing as the second unit attachment facing the first unit attachment and extending in the intersecting direction A second body connected to the end of the second body on the side where the second opposing portion is located. A coupling device for coupling a second connector having a second through hole a Kuta penetrating the second connector in the intersecting direction, and those having, a,
A connecting pin that is formed in a cylindrical shape having an inner peripheral surface that surrounds an internal space and can be inserted into the first through hole and the second through hole;
An insertion device for inserting the connection pin into the first connector and the second connector so that the first unit attachment and the second unit attachment are connected to each other;
The insertion device is
A rod having a shape capable of being inserted through the internal space of the connecting pin;
A cylinder for expanding and contracting the rod;
In a state where the first through hole of the first unit attachment and the second through hole of the second unit attachment overlap with each other in the intersecting direction, the cylinder is in contact with the first facing portion and the second facing portion. A cylinder holding portion for holding the cylinder in a state straddling the first facing portion and the second facing portion so as to be capable of relative displacement along the intersecting direction;
A first side on which the first opposing portion and the second opposing portion are located with respect to the first connector and the second connector with respect to the crossing direction as a reference with respect to the crossing direction. The first unit in a state of being connected to the internal space of the connecting pin and the tip of the rod disposed so as to pass through the through hole toward the second side opposite to the first side The rod in the state where the cylinder holding portion straddles the first opposing portion and the second opposing portion by contacting the attachment or the second unit attachment from the second side toward the first side. As the cylinder contracts, the cylinder is relatively displaced toward the first connector and the second connector with respect to the opposing portions, and the connecting pin is moved through the first through hole and the second through hole. And a reaction force generation member for generating a reaction force required to insert within the coupling device. 請求項１に記載の連結装置において、
前記シリンダ保持部は、
前記シリンダに接続されており、前記第１対向部と前記第２対向部に跨る跨り部と、
前記跨り部に接続されており、前記第１対向部及び前記第２対向部に当接することにより前記交差方向と直交する方向についての前記跨り部の位置を規定する位置規定部と、を有する、連結装置。 The connection device according to claim 1,
The cylinder holding part is
Connected to the cylinder, and straddling part straddling the first opposing part and the second opposing part,
A position defining portion that is connected to the straddling portion and defines the position of the straddling portion in a direction orthogonal to the intersecting direction by contacting the first facing portion and the second facing portion; Connecting device. 請求項１又は２に記載の連結装置と、
前記連結ピンにより互いに連結された前記単位アタッチメントから当該連結ピンを引き抜くときに用いられる抜取ユニットと、を備える連結及び切り離し装置であって、
前記抜取ユニットは、
前記ロッドの先端部に対して着脱自在に接続可能で、かつ、前記交差方向について前記第１側から前記第２側に向かって前記連結ピンの内部空間を通過するように配置された前記ロッドの先端部に接続された状態で前記ロッドが縮むのに伴って前記第１貫通孔内及び前記第２貫通孔内を通りながら前記連結ピンを前記シリンダ側に押出可能な押出部材と、
前記連結ピンの軸方向と直交する方向について当該連結ピンの外側において前記シリンダと前記第１コネクタ及び前記第２コネクタとの間に介在した状態で前記シリンダと前記第１コネクタ又は前記第２コネクタとに当接することにより、前記ロッドが縮められるときに前記シリンダが前記連結ピンの軸方向について前記第１コネクタ及び前記第２コネクタから離間した位置から前記第１コネクタ及び前記第２コネクタに近づくのを規制するとともに、前記ロッドが縮むのに伴って当該ロッドの先端部に接続された前記押出部材が前記貫通孔内を通りながら前記連結ピンを前記シリンダ側に押し出すのに必要な反力を生じさせる介在部材と、を有する、連結及び切り離し装置。 The connecting device according to claim 1 or 2,
A connecting and disconnecting device comprising: a sampling unit used when pulling out the connecting pin from the unit attachment connected to each other by the connecting pin;
The sampling unit is
The rod is detachably connectable to the tip of the rod and is disposed so as to pass through the internal space of the connecting pin from the first side toward the second side in the intersecting direction. An extruding member capable of extruding the connecting pin to the cylinder side while passing through the first through hole and the second through hole as the rod contracts in a state of being connected to the tip part;
The cylinder and the first connector or the second connector in a state of being interposed between the cylinder and the first connector and the second connector outside the connection pin in a direction perpendicular to the axial direction of the connection pin. When the rod is contracted, the cylinder approaches the first connector and the second connector from a position separated from the first connector and the second connector in the axial direction of the connecting pin. As the rod contracts, the pushing member connected to the tip of the rod generates a reaction force required to push the connecting pin toward the cylinder while passing through the through hole. A connecting and disconnecting device having an interposition member. 請求項３に記載の連結及び切り離し装置において、
前記介在部材は、前記シリンダに対し当該シリンダの軸方向と直交する方向から係合可能な形状を有する、連結及び切り離し装置。 The connection and disconnection device according to claim 3,
The interposition member has a shape that can be engaged with the cylinder from a direction orthogonal to the axial direction of the cylinder. 建設機械のアタッチメントを構成する第１単位アタッチメント及び第２単位アタッチメントであって、前記第１単位アタッチメントとして、前記第２単位アタッチメントと対向するとともに当該第１単位アタッチメントと前記第２単位アタッチメントとが互いに対向する方向と交差する交差方向に延びる第１対向部を含む第１本体と、前記第１本体のうち前記第１対向部が位置する側の端部に接続された第１コネクタであって当該第１コネクタを前記交差方向に貫通する第１貫通孔を有する第１コネクタと、を有するものと、前記第２単位アタッチメントとして、前記第１単位アタッチメントと対向するとともに前記交差方向に延びる第２対向部を含む第２本体と、前記第２本体のうち前記第２対向部が位置する側の端部に接続された第２コネクタであって当該第２コネクタを前記交差方向に貫通する第２貫通孔を有する第２コネクタと、を有するものと、を連結する連結方法であって、
内部空間を取り囲む内周面を有する筒状に形成されており、前記第１貫通孔内及び前記第２貫通孔内に挿入されることが可能な連結ピンを用意する工程と、
前記第１単位アタッチメントの第１貫通孔と前記第２単位アタッチメントの第２貫通孔とが前記交差方向に重なるように前記第１単位アタッチメント及び前記第２単位アタッチメントとを配置する工程と、
前記交差方向について前記第１コネクタ及び前記第２コネクタを基準として前記第１対向部及び前記第２対向部が位置する第１側から当該第１側と反対に位置する第２側に向かって前記連結ピンの内部空間及び各貫通孔内にロッドを挿通した後、当該ロッドの先端部に、前記第１アタッチメント又は前記第２アタッチメントに対して前記第２側から前記第１側に当接する反力生成用部材を接続することにより、シリンダが各対向部に対して各コネクタに近づく方向に相対変位しながら前記連結ピンを各貫通孔内に押し込むのに必要な反力が前記第１アタッチメント又は前記第２アタッチメントと前記反力生成用部材との間に生じる反力発生状態を形成する工程と、
前記反力発生状態で前記ロッドを縮めることにより、前記シリンダを各対向部に対して前記第１コネクタ及び前記第２コネクタ側に相対変位させながら当該シリンダで前記連結ピンを押圧し、当該連結ピンを前記第１貫通孔内及び前記第２貫通孔内に挿入することにより前記第１単位アタッチメントと前記第２単位アタッチメントとが互いに連結する工程と、を含む、連結方法。 A first unit attachment and a second unit attachment constituting an attachment of a construction machine, wherein the first unit attachment is opposed to the second unit attachment and the first unit attachment and the second unit attachment are mutually A first main body including a first facing portion extending in a crossing direction intersecting a facing direction; and a first connector connected to an end portion of the first main body on the side where the first facing portion is located. A first connector having a first through-hole penetrating the first connector in the intersecting direction, and a second facing as the second unit attachment facing the first unit attachment and extending in the intersecting direction A second body connected to the end of the second body on the side where the second opposing portion is located. A connecting method of connecting a second connector having a second through hole a Kuta penetrating the second connector in the intersecting direction, and those having, a,
A step of preparing a connecting pin which is formed in a cylindrical shape having an inner peripheral surface surrounding an internal space and can be inserted into the first through hole and the second through hole;
Disposing the first unit attachment and the second unit attachment such that a first through hole of the first unit attachment and a second through hole of the second unit attachment overlap in the intersecting direction;
The crossing direction from the first side where the first opposing part and the second opposing part are located with respect to the first connector and the second connector as a reference, toward the second side located opposite to the first side. After inserting the rod into the internal space of the connecting pin and each through hole, the reaction force that contacts the first side from the second side to the first attachment or the second attachment at the tip of the rod By connecting the generating member, the reaction force required to push the connecting pin into each through-hole while the cylinder is relatively displaced in the direction approaching each connector with respect to each facing portion causes the first attachment or the Forming a reaction force generation state generated between the second attachment and the reaction force generation member;
The connecting pin is pressed by the cylinder while the cylinder is relatively displaced toward the first connector and the second connector with respect to each facing portion by contracting the rod in the reaction force generating state. Connecting the first unit attachment and the second unit attachment to each other by inserting the first unit attachment into the first through hole and the second through hole. 建設機械のアタッチメントを構成する第１単位アタッチメント及び第２単位アタッチメントであって、前記第１単位アタッチメントとして、前記第２単位アタッチメントと対向するとともに当該第１単位アタッチメントと前記第２単位アタッチメントとが互いに対向する方向と交差する交差方向に延びる第１対向部を含む第１本体と、前記第１本体のうち前記第１対向部が位置する側の端部に接続された第１コネクタであって当該第１コネクタを前記交差方向に貫通する第１貫通孔を有する第１コネクタと、を有するものと、前記第２単位アタッチメントとして、前記第１単位アタッチメントと対向するとともに前記交差方向に延びる第２対向部を含む第２本体と、前記第２本体のうち前記第２対向部が位置する側の端部に接続された第２コネクタであって当該第２コネクタを前記交差方向に貫通する第２貫通孔を有する第２コネクタと、を有するものの前記第１貫通孔と前記第２貫通孔とに対し、内部空間を取り囲む内周面を有する筒状に形成されており前記第１貫通孔内及び前記第２貫通孔内に挿入されることが可能な連結ピンを挿入するための挿入装置であって、
前記連結ピンの内部空間を挿通可能な形状を有するロッドと、
前記ロッドを伸縮させるシリンダと、
前記第１単位アタッチメントの第１貫通穴と前記第２単位アタッチメントの第２貫通穴とが前記交差方向に重なった状態において、前記シリンダが前記第１対向部及び前記第２対向部に対して前記交差方向に沿って相対変位可能となるように当該第１対向部及び当該第２対向部に跨った状態で前記シリンダを保持するシリンダ保持部と、
前記ロッドの先端部に対して着脱自在に接続可能で、かつ、前記交差方向について前記第１コネクタ及び前記第２コネクタを基準として前記第１対向部及び前記第２対向部が位置する第１側から当該第１側と反対に位置する第２側に向かって前記連結ピンの内部空間及び各貫通孔内を通過するように配置された前記ロッドの先端部に接続された状態で前記第１単位アタッチメント又は前記第２単位アタッチメントに対して前記第２側から前記第１側に向かって当接することにより、前記シリンダ保持部が前記第１対向部及び前記第２対向部に跨った状態において前記ロッドが縮むのに伴って前記シリンダが各対向部に対して前記第１コネクタ及び前記第２コネクタに向かって相対変位しながら前記連結ピンを前記第１貫通孔及び前記第２貫通孔内に挿入するのに必要な反力を生じさせる反力生成用部材と、を備える、挿入装置。 A first unit attachment and a second unit attachment constituting an attachment of a construction machine, wherein the first unit attachment is opposed to the second unit attachment and the first unit attachment and the second unit attachment are mutually A first main body including a first facing portion extending in a crossing direction intersecting a facing direction; and a first connector connected to an end portion of the first main body on the side where the first facing portion is located. A first connector having a first through-hole penetrating the first connector in the intersecting direction, and a second facing as the second unit attachment facing the first unit attachment and extending in the intersecting direction A second body connected to the end of the second body on the side where the second opposing portion is located. A second connector having a second through-hole penetrating the second connector in the intersecting direction, the inner circumference surrounding the internal space with respect to the first through-hole and the second through-hole An insertion device for inserting a connecting pin that is formed in a cylindrical shape having a surface and can be inserted into the first through hole and the second through hole,
A rod having a shape capable of being inserted through the internal space of the connecting pin;
A cylinder for expanding and contracting the rod;
In a state where the first through hole of the first unit attachment and the second through hole of the second unit attachment overlap with each other in the intersecting direction, the cylinder is in contact with the first facing portion and the second facing portion. A cylinder holding portion for holding the cylinder in a state straddling the first facing portion and the second facing portion so as to be capable of relative displacement along the intersecting direction;
A first side on which the first opposing portion and the second opposing portion are located with respect to the first connector and the second connector with respect to the crossing direction as a reference with respect to the crossing direction. The first unit in a state of being connected to the internal space of the connecting pin and the tip of the rod disposed so as to pass through the through hole toward the second side opposite to the first side The rod in the state where the cylinder holding portion straddles the first opposing portion and the second opposing portion by contacting the attachment or the second unit attachment from the second side toward the first side. As the cylinder contracts, the cylinder is relatively displaced toward the first connector and the second connector with respect to the opposing portions, and the connecting pin is moved through the first through hole and the second through hole. And a reaction force generation member for generating a reaction force required to insert within the insertion device.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009173424A (en) * 2008-01-28 2009-08-06 Kobelco Cranes Co Ltd Unit boom
JP2010089776A (en) * 2008-09-22 2010-04-22 Manitowoc Crane Companies Ltd Trunnion transportation system and crane using same
JP2011042460A (en) * 2009-08-21 2011-03-03 Kobelco Cranes Co Ltd Jib joining pin urging device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009173424A (en) * 2008-01-28 2009-08-06 Kobelco Cranes Co Ltd Unit boom
JP2010089776A (en) * 2008-09-22 2010-04-22 Manitowoc Crane Companies Ltd Trunnion transportation system and crane using same
JP2011042460A (en) * 2009-08-21 2011-03-03 Kobelco Cranes Co Ltd Jib joining pin urging device

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