JP3949824B2 - lift device - Google Patents

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Publication number
JP3949824B2
JP3949824B2 JP24616898A JP24616898A JP3949824B2 JP 3949824 B2 JP3949824 B2 JP 3949824B2 JP 24616898 A JP24616898 A JP 24616898A JP 24616898 A JP24616898 A JP 24616898A JP 3949824 B2 JP3949824 B2 JP 3949824B2
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JP
Japan
Prior art keywords
casing
tip
pulley
movable pulley
slide base
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JP24616898A
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Japanese (ja)
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JP2000073683A (en
Inventor
純孝 斉藤
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Hirado Kinzoku Kogyo Co Ltd
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Hirado Kinzoku Kogyo Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、昇降装置に関するものである。
【0002】
【従来の技術】
従来、バックホーのブームの先端部に石割機や削岩機等の作業機を昇降可能に装着するための昇降装置としては、バックホーのブームの先端に上下方向へ向けて伸延させたケーシングを取付け、同ケーシングの内部に油圧シリンダをシリンダロッドの先端を下方へ向けて配設し、同シリンダロッドの先端に作業機を装着しており、油圧シリンダのシリンダロッドを進退させることにより作業機を昇降させるべく構成していた。
【0003】
【発明が解決しようとする課題】
ところが、上記従来の作業機の昇降装置にあっては、油圧シリンダのシリンダロッドの先端に作業機を装着していたため、作業機を最下降させる場合には、油圧シリンダの先端にシリンダロッドの全長を伸長させた状態とする一方、作業機を最上昇させる場合には、油圧シリンダの内部にシリンダロッドの全長を収容させた状態としなければならず、昇降装置の全長が作業機の昇降距離の約2倍以上もの長さとなってしまい、昇降装置が大型化してしまうといった不具合があった。
【0004】
【課題を解決するための手段】
そこで、請求項1に記載の本発明では、バックホーのブームの先端部に作業機を昇降可能に装着するための昇降装置において、上下に伸延させた矩形箱型状のケーシングと、このケーシングの前壁における左右端縁部に沿わせて上下方向に伸延させて取付けた左右一対のガイドレールと、このガイドレールに上下方向へ向けて摺動自在に取付けて昇降自在としたスライド台と、前記ケーシングの内側上部に取り付けてシリンダロッドの先端を下方へ向けた油圧式のシリンダと、前記シリンダロッドの先端に取付けた動滑車支持台と、この動滑車支持台に上下一対としてそれぞれ回動自在に軸支された上下の動滑車と、前記ケーシングの上端部の前壁寄りに回動自在に軸支された前記動滑車より小径の上側定滑車と、前記ケーシングの下端部の前壁寄りに回動自在に軸支された前記動滑車より小径の下側定滑車と、前記ケーシングの上端に基端を連結して前記上側の動滑車の下側部と前記上側定滑車の上側部に巻回して前記ケーシングの前壁の前方側で前記スライド台の上部に先端を連結した上側のワイヤーと、前記ケーシングの下端に基端を連結して前記下側の動滑車の上側部と前記下側定滑車の下側部に巻回して前記ケーシングの前壁の前方側で前記スライド台の下部に先端を連結した下側のワイヤーと、前記シリンダロッドの先端よりも上方で前記上側のワイヤーに当接させたテンションローラと、設けて、前記油圧式のシリンダで前記シリンダロッドを進退移動させることにより前記動滑車支持台に枢支された上下の動滑車を昇降させて前記スライド台を昇降させ、前記スライド台に装着した前記作業機を昇降可能とした。
【0006】
【発明の実施の形態】
本発明に係る昇降装置は、ケーシングに、作業機を装着するためのスライド台を昇降自在に配設するとともに、ケーシングに動滑車をスライド台の昇降方向に沿わせて昇降自在に配設し、同動滑車に巻回したワイヤーの両端をケーシングの上端部とスライド台とにそれぞれ連結し、しかも、動滑車とケーシングとの間に、動滑車を昇降させるための動滑車昇降手段を介設したものである。
【0007】
従って、動滑車昇降手段による動滑車の昇降長さに対して作業機をその2倍の距離をも昇降させることができ、作業機の昇降長さを従来と同様とした場合には、昇降装置の小型・軽量化を図ることができる。
【0008】
また、スライド台とケーシングの下端部との間にもワイヤーを設けることにより、ケーシングの傾斜状態にかかわらずスライド台を確実に移動させることができ、昇降装置を傾斜させた状態で作業機を使用することができる。
【0009】
【実施例】
以下に、本発明の実施例について図面を参照しながら説明する。
【0010】
図1は、本発明に係る昇降装置1を具備する石割作業機2の使用状態を示した図であり、同石割作業機2は、バックホー3のブーム4の先端にバケット5を取付け、同バケット5の左側壁6に昇降装置1を取付け、同昇降装置1に作業機としての石割機8を取付けている。尚、作業機としては、石割機8に限らず、削岩機や破砕機等の各種のものを用いることができる。
【0011】
そして、石割作業機2は、バックホー3のブーム4を変位移動して、石割機8を石盤9に予め掘削した掘削孔10の近傍位置に移動し、掘削孔10の内部に石割機8の先端に下方へ向けて突設した左右一対の拡開片11,11'を挿入し、掘削孔10の内部で拡開片11,11'を左右に拡開することにより、掘削孔10の周辺に亀裂を生じさせて石割作業を行うものである。
【0012】
昇降装置1は、上下に伸延させた矩形箱型状のケーシング12の後壁13の下端部に上下一対のブラケット14,14'を間隔を開けて取付けている。
【0013】
このように、石割作業機2は、重量物であるバケット5に昇降装置1を固着しているため、石割作業時の振動が石割機8から昇降装置1を介してバケット5に伝達しても、バケット5で振動が吸収されて、バックホー3には振動が伝達されることはなく、バックホー3に乗車する作業者に不快感を与えずに、石割作業を円滑に行うことができる。
【0014】
ケーシング12の前壁15には、左右一対のガイドレール16,16'を前壁15の左右端縁部に沿わせて上下方向に伸延させた状態で取付け、同ガイドレール16,16'に、石割機8を装着するためのスライド台17を上下方向へ向けて摺動自在に取付けている。
【0015】
スライド台17は、基板18の前側下部に支持ブラケット19を取付け、同支持ブラケット19に石割機8を取付ける一方、基板18の左右端縁に上下一対の車輪支持ブラケット20,20 を後方へ向けて突設し、各車輪支持ブラケット20に転動車輪(図示省略)を車軸21を介して回動自在に取付け、同転動車輪と基板18とによってガイドレール16,16'を挟持している。
【0016】
ケーシング12の内側上部には、動滑車昇降手段7としての油圧式のシリンダ22をシリンダロッド23の先端を下方へ向けて取付け、同シリンダロッド23の先端に動滑車支持台24を取付け、同動滑車支持台24に上下一対の動滑車25,26 を回動自在に軸支している。図中、39は上側カバー体である。
【0017】
そして、動滑車25,26 は、シリンダ22のシリンダロッド23を進退移動させることにより、スライド台17の移動方向に沿って昇降するようにしている。
【0018】
上下の動滑車25,26 には、ケーシング12とスライド台17との間に張設した上下一対のワイヤー27,28 をそれぞれ巻回している。
【0019】
すなわち、上側のワイヤー27は、ケーシング12の上端にワイヤー27の基端を連結し、ワイヤー27の基端部分27a を下方へ向けて伸延させて上側の動滑車25の下側部に巻回し、ワイヤー27の中途部分27b を上方へ向けて伸延させて、ケーシング12の上端部に回動自在に軸支した上側定滑車29の上側部に巻回し、ワイヤー27の先端部分27c を下方へ向けて伸延させ、スライド台17の上部にワイヤー27の先端を連結している。図中、34はテンションローラ、35,36 は連結具である。
【0020】
一方、下側のワイヤー28は、ケーシング12の下端にワイヤー28の基端を連結し、ワイヤー28の基端部分28a を上方へ向けて伸延させて下側の動滑車26の上側部に巻回し、ワイヤー28の中途部分28b を下方へ向けて伸延させて、ケーシング12の下端部に回動自在に軸支した下側定滑車30の下側部に巻回し、ワイヤー28の先端部分28c を上方へ向けて伸延させ、スライド台17の下部にワイヤー28の先端を連結している。図中、37,38 は連結具である。
【0021】
そして、昇降装置1は、図3に示すように、シリンダ22のシリンダロッド23を下方へ向けて進出させると、上下の動滑車25,26 が降下し、それに伴って、上側のワイヤー27が緊張する一方、下側のワイヤー28が弛緩し、スライド台17が上昇して、石割機8が上昇する。
【0022】
一方、昇降装置1は、図4に示すように、シリンダ22のシリンダロッド23を上方へ向けて退去させると、上下の動滑車25,26 が上昇し、それに伴って、上側のワイヤー27が弛緩する一方、下側のワイヤー28が緊張し、スライド台17が降下して、石割機8が降下する。
【0023】
このように、昇降装置1は、シリンダ22のシリンダロッド23を進退させることにより、動滑車25,26 を昇降させ、それに伴って、スライド台17を昇降させて石割機8を昇降させている。その際に、動滑車25,26 の昇降によって、ワイヤー27,28 の基端部分27a,28a と中途部分27b,28b のうち動滑車25,26 の昇降長さに相当する部分の長さがワイヤー27,28 の先端部分27c,28c に増減されることとなるため、石割機8は、動滑車25,26 の昇降長さの2倍の距離を昇降することができる。
【0024】
従って、石割機8の昇降長さを従来と同様の長さとした場合には、シリンダ22のシリンダロッド23の長さを半分に短縮することができ、昇降装置1の全長を短くして小型化を図ることができる。
【0025】
尚、本実施例においては、スライド台17とケーシング12の下端との間にもワイヤー28を設けているが、ケーシング12を常に上下方向に向けた状態で使用する場合には、下側のワイヤー28を設けなくても、重力の作用によってスライド台17を降下させることができる。また、下側のワイヤー28に代えて、スライド台17とケーシング12の下端との間にスプリングやゴムベルト等の弾性部材によってスライド台17を下方へ向けて付勢してもよい。
【0026】
一方、本実施例のように、スライド台17とケーシング12の下端との間にもワイヤー28を設けることにより、スライド台17を確実に移動させることができ、ケーシング12を傾斜させた状態で使用することもできる。
【0027】
ケーシング12の下端には、下側カバー体31を取付け、同下側カバー体31の前部にリング状の保護環32を前方へ向けて突設し、同保護環32の中空部に石割機8の左右拡開片11,11'を挿入して、保護環32によって左右拡開片11,11'を保護する一方、下側カバー体31の下部にガイドロッド33を下方へ向けて突設している。
【0028】
石割機8は、図5に示すように、中空円筒状の支持筒40の内部に中空円筒状のくさび杆ケース41を回動自在に挿通し、同くさび杆ケース41の基端にくさび杆進退用油圧シリンダー42を連設する一方、くさび杆ケース41の先端に拡開片支持ケース43を連設している。
【0029】
支持筒40は、外周面前部にモータ支持板44を連設し、同モータ支持板44の上部に拡開片回動用油圧モータ45を取付けるとともに、同拡開片回動用油圧モータ45に前記くさび杆ケース41を連動連結している。
【0030】
すなわち、拡開片回動用油圧モータ45のモータ軸46に駆動平歯車47を取付ける一方、くさび杆ケース41の外周面に従動平歯車48を取付け、同従動平歯車48に前記駆動平歯車47を中間平歯車49を介して連動連結している。図中、50は軸受、51は中間平歯車49の回動軸、52はくさび杆ケース41に従動平歯車48を取付けるための取付リングである。
【0031】
そして、拡開片回動用油圧モータ45を駆動して、くさび杆ケース41を回動することによって、くさび杆ケース41の先端に連設した左右拡開片11,11'を軸線廻りに回動するようにしている。従って、左右拡開片11,11'の拡開方向を軸線廻りに回動することができる。
【0032】
くさび杆進退用油圧シリンダー42は、先端に先鋭状のくさび杆53を鉛直下方に向けて連結しており、同くさび杆53は、くさび杆ケース41の中空部に挿通している。図中、57は連結具である。
【0033】
そして、くさび杆進退用油圧シリンダー42を作動することによって、くさび杆53を上下方向に進退作動するようにしている。
【0034】
拡開片支持ケース43は、先端に円筒を縦方向に2分割した形状の一対の左右拡開片11,11'を下方に向けて挟持している。すなわち、拡開片支持ケース43の内部に左右拡開片11,11'の基端を挿入し、同左右拡開片11,11'の基端部に連結した挟持体54,54 をスプリング55,55 によって拡開片支持ケース43を内側方に向けて付勢することにより、左右拡開片11,11'の基端部を挟持している。図中、56,56 は解除レバーであり、同解除レバー56,56 を操作することにより挟持体54,54 をスプリング55,55 の付勢力に抗して拡げて、拡開片支持ケース43の先端から左右拡開片11,11'を取り外せるようにしている。
【0035】
左右拡開片11,11'の間には、図6に示すように、前記くさび杆53の先端を収容している。
【0036】
そして、石割作業時においては、図7に示すように、くさび杆進退用油圧シリンダー42を作動し、くさび杆53を下方に進出させることにより、くさび杆53の先端外側面が左右拡開片11,11'の先端内側面に当接して、左右拡開片11,11'を左右方向に拡開するようにしている。
【0037】
【発明の効果】
本発明は、以上説明したような形態で実施され、以下に記載されるような効果を奏する。
【0038】
求項1に記載の本発明では、バックホーのブームの先端部に作業機を昇降可能に装着するための昇降装置において、上下に伸延させた矩形箱型状のケーシングと、このケーシングの前壁における左右端縁部に沿わせて上下方向に伸延させて取付けた左右一対のガイドレールと、このガイドレールに上下方向へ向けて摺動自在に取付けて昇降自在としたスライド台と、前記ケーシングの内側上部に取り付けてシリンダロッドの先端を下方へ向けた油圧式のシリンダと、前記シリンダロッドの先端に取付けた動滑車支持台と、この動滑車支持台に上下一対としてそれぞれ回動自在に軸支された上下の動滑車と、前記ケーシングの上端部の前壁寄りに回動自在に軸支された前記動滑車より小径の上側定滑車と、前記ケーシングの下端部の前壁寄りに回動自在に軸支された前記動滑車より小径の下側定滑車と、前記ケーシングの上端に基端を連結して前記上側の動滑車の下側部と前記上側定滑車の上側部に巻回して前記ケーシングの前壁の前方側で前記スライド台の上部に先端を連結した上側のワイヤーと、前記ケーシングの下端に基端を連結して前記下側の動滑車の上側部と前記下側定滑車の下側部に巻回して前記ケーシングの前壁の前方側で前記スライド台の下部に先端を連結した下側のワイヤーと、前記シリンダロッドの先端よりも上方で前記上側のワイヤーに当接させたテンションローラと、設けて、前記油圧式のシリンダで前記シリンダロッドを進退移動させることにより前記動滑車支持台に枢支された上下の動滑車を昇降させて前記スライド台を昇降させ、前記スライド台に装着した前記作業機を昇降可能としたことによって、油圧式のシリンダのシリンダロッドによって昇降される動滑車支持台の昇降長さに対して作業機をその2倍の距離をも昇降させることができ、従って、作業機の昇降長さを従来と同様とした場合には、昇降装置の小型・軽量化を図ることができる。
【図面の簡単な説明】
【図1】本発明に係る昇降装置を具備した石割作業機を示す斜視図。
【図2】昇降装置を示す正面図。
【図3】石割機本体を上昇させた状態の昇降装置を示す側面図。
【図4】石割機本体を降下させた状態の昇降装置を示す側面図。
【図5】石割機本体を示す断面図。
【図6】左右拡開片を閉じた状態を示す説明図。
【図7】左右拡開片を開いた状態を示す説明図。
【符号の説明】
1 昇降装置
2 石割作業機
3 バックホー
4 ブーム
5 バケット
7 動滑車昇降手段
8 石割機
11,11' 拡開片
12 ケーシング
17 スライド台
22 シリンダ
23 シリンダロッド
24 動滑車支持台
25,26 動滑車
27,28 ワイヤー
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lifting device.
[0002]
[Prior art]
Conventionally, as an elevating device for mounting a working machine such as a stone splitting machine or a rock drill to be able to move up and down at the tip of the backhoe boom, a casing extended in the vertical direction is attached to the tip of the backhoe boom, A hydraulic cylinder is arranged inside the casing with the tip of the cylinder rod facing downward, and a work implement is mounted on the tip of the cylinder rod, and the work implement is moved up and down by advancing and retracting the cylinder rod of the hydraulic cylinder. It was configured accordingly.
[0003]
[Problems to be solved by the invention]
However, in the conventional lifting device for a working machine, since the working machine is mounted on the tip of the cylinder rod of the hydraulic cylinder, when the work machine is lowered to the lowest position, the entire length of the cylinder rod is attached to the tip of the hydraulic cylinder. When the work implement is raised to the maximum, the entire length of the cylinder rod must be accommodated inside the hydraulic cylinder, and the total length of the lifting device is equal to the lift distance of the work implement. There was a problem that the length was about twice or more and the lifting device was enlarged.
[0004]
[Means for Solving the Problems]
Accordingly, in the present invention described in claim 1, in a lifting device for mounting the work implement to the tip of the boom of the backhoe so that it can be lifted up and down, a rectangular box-shaped casing extended up and down, A pair of left and right guide rails that are vertically extended along the left and right edges of the wall, a slide base that is slidably attached to the guide rails in the vertical direction, and that can be raised and lowered; and the casing A hydraulic cylinder attached to the inner upper portion of the cylinder rod with the tip of the cylinder rod facing downward, a movable pulley support attached to the tip of the cylinder rod, and a pair of upper and lower pivots on the movable pulley support. The upper and lower movable pulleys supported, the upper fixed pulley having a smaller diameter than the movable pulley pivotally supported near the front wall of the upper end portion of the casing, and the lower end portion of the casing A lower fixed pulley having a smaller diameter than the moving pulley pivotally supported near the wall, a base end connected to an upper end of the casing, and a lower portion of the upper moving pulley and an upper side of the upper fixed pulley An upper wire having a distal end connected to an upper portion of the slide base on the front side of the front wall of the casing and a base end connected to a lower end of the casing, and an upper portion of the lower movable pulley. A lower wire wound around the lower portion of the lower fixed pulley and connected to the lower end of the slide base on the front side of the front wall of the casing, and the upper wire above the tip of the cylinder rod. A tension roller abutting against the wire, and moving the cylinder rod forward and backward with the hydraulic cylinder to raise and lower the upper and lower movable pulleys pivotally supported by the movable pulley support base, Lift and lower The working machine mounted on de table was set to be raised and lowered.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The lifting device according to the present invention, in the casing, a slide table for mounting the work implement is disposed so as to be movable up and down, and a movable pulley is disposed in the casing so as to be movable up and down along the lifting direction of the slide table, Both ends of the wire wound around the movable pulley are connected to the upper end of the casing and the slide base, respectively, and a moving pulley lifting / lowering means for raising and lowering the moving pulley is interposed between the moving pulley and the casing. Is.
[0007]
Therefore, the working machine can be lifted up and down twice as much as the moving pulley ascending / descending length by the moving pulley ascending / descending means. Can be reduced in size and weight.
[0008]
In addition, by providing a wire between the slide base and the lower end of the casing, the slide base can be reliably moved regardless of the tilted state of the casing, and the working machine can be used with the lifting device tilted. can do.
[0009]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0010]
FIG. 1 is a view showing a usage state of a stone splitting machine 2 equipped with a lifting device 1 according to the present invention. The stone splitting machine 2 has a bucket 5 attached to the tip of a boom 4 of a backhoe 3, and the bucket The lifting device 1 is attached to the left side wall 6 of 5, and the stone splitting machine 8 as a working machine is attached to the lifting device 1. In addition, as a working machine, not only the stone splitting machine 8 but various things, such as a rock drill and a crusher, can be used.
[0011]
Then, the stone splitting machine 2 moves the boom 4 of the backhoe 3 to displace the stone splitting machine 8 to a position near the excavation hole 10 excavated in the stone plate 9 in advance. A pair of left and right expanded pieces 11, 11 ′ projecting downward is inserted into the borehole 10, and the expanded pieces 11, 11 ′ are expanded leftward and rightward inside the borehole 10, thereby The cracking process is performed to perform the stone breaking work.
[0012]
The elevating device 1 has a pair of upper and lower brackets 14 and 14 ′ attached to a lower end portion of a rear wall 13 of a rectangular box-shaped casing 12 extended vertically.
[0013]
In this way, since the stone splitting machine 2 has the lifting device 1 fixed to the heavy bucket 5, even if vibration during the stone splitting work is transmitted from the stone splitting device 8 to the bucket 5 via the lifting device 1. The vibration is absorbed by the bucket 5, and no vibration is transmitted to the backhoe 3, so that the chopping work can be performed smoothly without causing discomfort to the operator who gets on the backhoe 3.
[0014]
A pair of left and right guide rails 16 and 16 'are attached to the front wall 15 of the casing 12 so as to extend vertically along the left and right end edges of the front wall 15, and the guide rails 16 and 16' A slide base 17 for mounting the stone splitting machine 8 is slidably attached in the vertical direction.
[0015]
The slide base 17 has a support bracket 19 attached to the lower front side of the substrate 18 and the stone splitting machine 8 attached to the support bracket 19, while a pair of upper and lower wheel support brackets 20 and 20 are directed rearward at the left and right edges of the substrate 18. A rolling wheel (not shown) is rotatably mounted on each wheel support bracket 20 via an axle 21 so that the guide rails 16 and 16 ′ are sandwiched between the rolling wheel and the substrate 18.
[0016]
A hydraulic cylinder 22 as a moving pulley lifting / lowering means 7 is attached to the inner upper portion of the casing 12 with the tip of the cylinder rod 23 facing downward, and a moving pulley support 24 is attached to the tip of the cylinder rod 23. A pair of upper and lower movable pulleys 25 and 26 are rotatably supported on the pulley support base 24. In the figure, 39 is an upper cover body.
[0017]
The movable pulleys 25 and 26 are moved up and down along the moving direction of the slide base 17 by moving the cylinder rod 23 of the cylinder 22 forward and backward.
[0018]
A pair of upper and lower wires 27 and 28 stretched between the casing 12 and the slide base 17 are wound around the upper and lower movable pulleys 25 and 26, respectively.
[0019]
That is, the upper wire 27 connects the proximal end of the wire 27 to the upper end of the casing 12, extends the proximal end portion 27a of the wire 27 downward, and is wound around the lower portion of the upper movable pulley 25, The middle portion 27b of the wire 27 is extended upward and wound around the upper portion of the upper fixed pulley 29 pivotally supported on the upper end portion of the casing 12, and the tip portion 27c of the wire 27 is directed downward. The tip of the wire 27 is connected to the upper part of the slide base 17. In the figure, 34 is a tension roller, and 35 and 36 are connecting tools.
[0020]
On the other hand, the lower wire 28 connects the base end of the wire 28 to the lower end of the casing 12, extends the base end portion 28a of the wire 28 upward, and is wound around the upper portion of the lower movable pulley 26. The middle portion 28b of the wire 28 is extended downward and wound around the lower portion of the lower fixed pulley 30 pivotally supported at the lower end portion of the casing 12, and the tip portion 28c of the wire 28 is moved upward. The tip of the wire 28 is connected to the lower part of the slide base 17. In the figure, reference numerals 37 and 38 denote connecting tools.
[0021]
Then, as shown in FIG. 3, when the cylinder rod 23 of the cylinder 22 is advanced downward, the elevating device 1 moves down the upper and lower movable pulleys 25 and 26, and accordingly, the upper wire 27 is tensioned. On the other hand, the lower wire 28 relaxes, the slide base 17 rises, and the stone splitting machine 8 rises.
[0022]
On the other hand, as shown in FIG. 4, in the lifting device 1, when the cylinder rod 23 of the cylinder 22 is retracted upward, the upper and lower movable pulleys 25 and 26 rise, and accordingly, the upper wire 27 is relaxed. On the other hand, the lower wire 28 is tensioned, the slide table 17 is lowered, and the stone splitting machine 8 is lowered.
[0023]
In this manner, the lifting device 1 moves the movable pulleys 25 and 26 up and down by moving the cylinder rod 23 of the cylinder 22 forward and backward, and accordingly, raises and lowers the slide table 17 to raise and lower the stone splitter 8. At that time, as the moving pulleys 25 and 26 are moved up and down, the lengths of the base end portions 27a and 28a of the wires 27 and 28 and the lengths of the intermediate portions 27b and 28b corresponding to the moving heights of the moving pulleys 25 and 26 become the Since the front and rear end portions 27c and 28c of 27 and 28 are increased or decreased, the stone splitting machine 8 can move up and down a distance twice as long as the moving pulleys 25 and 26.
[0024]
Therefore, when the lifting / lowering length of the stone splitting machine 8 is the same as the conventional length, the length of the cylinder rod 23 of the cylinder 22 can be shortened by half, and the overall length of the lifting / lowering device 1 can be shortened and downsized. Can be achieved.
[0025]
In this embodiment, the wire 28 is also provided between the slide base 17 and the lower end of the casing 12. However, when the casing 12 is always used in the vertical direction, the lower wire is used. Even if 28 is not provided, the slide table 17 can be lowered by the action of gravity. Further, instead of the lower wire 28, the slide table 17 may be urged downward by an elastic member such as a spring or a rubber belt between the slide table 17 and the lower end of the casing 12.
[0026]
On the other hand, by providing the wire 28 between the slide base 17 and the lower end of the casing 12 as in the present embodiment, the slide base 17 can be reliably moved, and the casing 12 is used in an inclined state. You can also
[0027]
A lower cover body 31 is attached to the lower end of the casing 12, and a ring-shaped protective ring 32 is projected forward from the front portion of the lower cover body 31, and a stone splitting machine is formed in the hollow portion of the protective ring 32. 8 left and right expanded pieces 11 and 11 ′ are inserted and the left and right expanded pieces 11 and 11 ′ are protected by a protection ring 32, while a guide rod 33 projects downward from the lower cover body 31. is doing.
[0028]
As shown in FIG. 5, the stone splitting machine 8 rotatably inserts a hollow cylindrical wedge case 41 into the hollow cylindrical support tube 40, and advances and retracts the wedge at the base end of the wedge rod case 41. While the hydraulic cylinder 42 is continuously provided, the expanding piece support case 43 is continuously provided at the tip of the wedge rod case 41.
[0029]
The support cylinder 40 has a motor support plate 44 connected to the front part of the outer peripheral surface, and an expansion piece rotating hydraulic motor 45 is attached to the upper portion of the motor support plate 44, and the wedge is attached to the expansion piece rotation hydraulic motor 45.杆 Case 41 is linked and connected.
[0030]
That is, the drive spur gear 47 is attached to the motor shaft 46 of the expanding piece rotating hydraulic motor 45, while the driven spur gear 48 is attached to the outer peripheral surface of the wedge rod case 41, and the drive spur gear 47 is attached to the driven spur gear 48. The intermediate spur gear 49 is used for interlocking connection. In the figure, 50 is a bearing, 51 is a rotation shaft of the intermediate spur gear 49, and 52 is a mounting ring for mounting the driven spur gear 48 on the wedge rod case 41.
[0031]
Then, by driving the expanding piece rotating hydraulic motor 45 and rotating the wedge rod case 41, the left and right expanding pieces 11, 11 'connected to the tip of the wedge rod case 41 are rotated around the axis. Like to do. Therefore, the expanding direction of the left and right expanding pieces 11, 11 ′ can be rotated around the axis.
[0032]
The wedge cylinder advancing / retreating hydraulic cylinder 42 has a sharp wedge 53 connected to the tip thereof vertically downward, and the wedge 53 is inserted through a hollow portion of the wedge casing 41. In the figure, 57 is a connector.
[0033]
Then, by operating the wedge rod advance / retreat hydraulic cylinder 42, the wedge rod 53 is moved forward and backward.
[0034]
The widening piece support case 43 holds a pair of left and right widening pieces 11, 11 ′ having a shape in which a cylinder is divided into two in the longitudinal direction at the tip, and is directed downward. That is, the bases of the left and right widened pieces 11, 11 ′ are inserted into the inside of the widened piece support case 43, and the sandwiching bodies 54, 54 connected to the base ends of the left and right widened pieces 11, 11 ′ are connected to the spring 55 , 55 urge the expanding piece support case 43 inward, thereby holding the base end portions of the left and right expanding pieces 11, 11 ′. In the figure, reference numerals 56 and 56 denote release levers. By operating the release levers 56 and 56, the holding bodies 54 and 54 are expanded against the urging force of the springs 55 and 55, and The left and right expanding pieces 11, 11 ′ can be removed from the tip.
[0035]
As shown in FIG. 6, the front end of the wedge ridge 53 is accommodated between the left and right expanded pieces 11, 11 ′.
[0036]
Then, at the time of the chopping work, as shown in FIG. 7, the wedge rod advancing / retracting hydraulic cylinder 42 is operated to advance the wedge rod 53 downward, so that the outer surface of the front end of the wedge rod 53 is expanded left and right. , 11 ′ abuts on the inner surface of the tip, and the left and right expanding pieces 11, 11 ′ are expanded in the left-right direction.
[0037]
【The invention's effect】
The present invention is implemented in the form as described above, and has the following effects.
[0038]
In the present invention according to Motomeko 1, the lifting device for vertically movably mounting the working machine to the tip of the boom backhoe, a rectangular box-shaped casing which has distracted vertically, the front wall of the casing A pair of left and right guide rails that are vertically extended along the left and right edges, a slide base that is slidably attached to the guide rails in the vertical direction, and is movable up and down, and the casing. A hydraulic cylinder mounted on the inner top with the tip of the cylinder rod facing downward, a moving pulley support attached to the tip of the cylinder rod, and a pair of upper and lower pivots on the moving pulley support. Upper and lower movable pulleys, an upper fixed pulley having a smaller diameter than the movable pulley rotatably supported near the front wall of the upper end portion of the casing, and a front wall of the lower end portion of the casing A lower fixed pulley having a smaller diameter than the movable pulley rotatably supported, and a base end connected to the upper end of the casing, and wound around the lower portion of the upper movable pulley and the upper portion of the upper fixed pulley. An upper wire having a tip connected to the upper part of the slide base on the front side of the front wall of the casing, and a base end connected to the lower end of the casing to connect the upper side and the lower side of the lower pulley The lower wire is wound around the lower side of the fixed pulley and connected to the lower end of the slide base on the front side of the front wall of the casing, and the upper wire is higher than the front end of the cylinder rod. A tension roller that is in contact, and by moving the cylinder rod forward and backward with the hydraulic cylinder, the upper and lower movable pulleys pivotally supported by the movable pulley support are raised and lowered to raise and lower the slide table, On the slide table By wearing the the working machine and movable up and down, it can also raise and lower the distance working machine twice against movable pulley support base of the lift length that is raised and lowered by hydraulic cylinders of the cylinder rod Therefore, when the lifting / lowering length of the work implement is the same as that of the prior art, the lifting / lowering device can be reduced in size and weight.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a stone splitting machine equipped with a lifting device according to the present invention.
FIG. 2 is a front view showing the lifting device.
FIG. 3 is a side view showing the lifting device in a state in which the stone splitting machine main body is raised.
FIG. 4 is a side view showing the lifting device in a state where the main body of the stone split machine is lowered.
FIG. 5 is a cross-sectional view showing a stone split machine body.
FIG. 6 is an explanatory view showing a state in which the left and right expanding pieces are closed.
FIG. 7 is an explanatory view showing a state where left and right expanding pieces are opened.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lifting apparatus 2 Stone splitting machine 3 Backhoe 4 Boom 5 Bucket 7 Moving pulley lift means 8 Stone splitting machine
11,11 'expansion piece
12 casing
17 Slide table
22 cylinders
23 Cylinder rod
24 Moving pulley support
25,26 movable pulley
27,28 wire

Claims (1)

バックホーのブームの先端部に作業機を昇降可能に装着するための昇降装置において、
上下に伸延させた矩形箱型状のケーシングと、
このケーシングの前壁における左右端縁部に沿わせて上下方向に伸延させて取付けた左右一対のガイドレールと、
このガイドレールに上下方向へ向けて摺動自在に取付けて昇降自在としたスライド台と、
前記ケーシングの内側上部に取り付けてシリンダロッドの先端を下方へ向けた油圧式のシリンダと、
前記シリンダロッドの先端に取付けた動滑車支持台と、
この動滑車支持台に上下一対としてそれぞれ回動自在に軸支された上下の動滑車と、
前記ケーシングの上端部の前壁寄りに回動自在に軸支された前記動滑車より小径の上側定滑車と、
前記ケーシングの下端部の前壁寄りに回動自在に軸支された前記動滑車より小径の下側定滑車と、
前記ケーシングの上端に基端を連結して前記上側の動滑車の下側部と前記上側定滑車の上側部に巻回して前記ケーシングの前壁の前方側で前記スライド台の上部に先端を連結した上側のワイヤーと、
前記ケーシングの下端に基端を連結して前記下側の動滑車の上側部と前記下側定滑車の下側部に巻回して前記ケーシングの前壁の前方側で前記スライド台の下部に先端を連結した下側のワイヤーと、
前記シリンダロッドの先端よりも上方で前記上側のワイヤーに当接させたテンションローラと、
を設けて、前記油圧式のシリンダで前記シリンダロッドを進退移動させることにより前記動滑車支持台に枢支された上下の動滑車を昇降させて前記スライド台を昇降させ、前記スライド台に装着した前記作業機を昇降可能としたことを特徴とする昇降装置。
In the lifting device for mounting the work machine to the tip of the boom of the backhoe so that it can be lifted and lowered,
A rectangular box-shaped casing extended vertically;
A pair of left and right guide rails attached to extend in the vertical direction along the left and right edges of the front wall of the casing;
A slide base that is slidably mounted on this guide rail in a vertical direction and can be raised and lowered,
A hydraulic cylinder attached to the inside upper part of the casing and having the tip of the cylinder rod directed downward;
A movable pulley support attached to the tip of the cylinder rod;
An upper and lower movable pulley pivotally supported as a pair of upper and lower by this movable pulley support base,
An upper fixed pulley having a smaller diameter than the movable pulley pivotally supported near the front wall of the upper end portion of the casing;
A lower constant pulley having a smaller diameter than the movable pulley pivotally supported near the front wall of the lower end of the casing;
A base end is connected to the upper end of the casing, wound around the lower side of the upper movable pulley and the upper side of the upper fixed pulley, and the front end is connected to the upper portion of the slide base on the front side of the front wall of the casing. The upper wire
A base end is connected to the lower end of the casing, wound around the upper side of the lower moving pulley and the lower side of the lower fixed pulley, and the front end of the lower end of the slide base on the front side of the front wall of the casing The lower wire connecting the
A tension roller in contact with the upper wire above the tip of the cylinder rod;
And moving the cylinder rod forward and backward by the hydraulic cylinder to raise and lower the upper and lower movable pulleys pivotally supported by the movable pulley support base to raise and lower the slide base and attach the slide base to the slide base. A lifting device characterized in that the working machine can be lifted and lowered.
JP24616898A 1998-08-31 1998-08-31 lift device Expired - Lifetime JP3949824B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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JP3949824B2 true JP3949824B2 (en) 2007-07-25

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Publication number Priority date Publication date Assignee Title
KR102346251B1 (en) * 2020-07-01 2022-01-03 주식회사 제이에스씨 Multifunctional attachment tool
KR102588283B1 (en) * 2021-10-14 2023-10-12 주식회사 제이에스씨 Safety device for attachment tool with multi-function
KR200496899Y1 (en) * 2021-12-07 2023-05-30 박준범 Core tension stand and Drilling device including the same

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