JPH0327083Y2

JPH0327083Y2 -

Info

Publication number: JPH0327083Y2
Application number: JP19280285U
Authority: JP
Priority date: 1985-12-13
Filing date: 1985-12-13
Publication date: 1991-06-12
Also published as: JPS6299649U

Description

【考案の詳細な説明】〔産業上の利用分野〕本考案は、走行機体から延出したアームの先端
に、上下揺動自在にシヨベルを取付け、長手方向
の中間部を前記アームに枢支したチルトアーム、
及び、前記チルトアームの一端部と前記シヨベル
とにわたつて連動連結したリンク部材を設け、前
記走行機体とチルトアームの他端部とにわたつて
シヨベル揺動操作用のチルトシリンダを設け、前
記シヨベルに代えフオークを付換え自在にしてあ
るシヨベルローダに関する。[Detailed description of the invention] [Industrial application field] The present invention has a shovel attached to the tip of an arm extending from a traveling machine body so as to be able to swing vertically, and a longitudinally intermediate portion pivoted to the arm. tilt arm,
A link member interlockingly connected between one end of the tilt arm and the shovel is provided, a tilt cylinder for swinging the shovel is provided between the traveling body and the other end of the tilt arm, and the shovel This invention relates to a shovel loader in which the fork can be freely replaced.

[Conventional technology]

従来、上記シヨベルローダでは、シヨベルに代
えてフオークを付換えるに、アーム先端部に枢支
したシヨベルを外してフオークを枢支する枢支部
を設け、シヨベル揺動操作用のリンク部材先端を
シヨベルに対して着脱自在に連動連結し、前記リ
ンク部材先端を、シヨベルに代えてフオークに連
設した支持部に連結させていた。 Conventionally, in the above-mentioned shovel loader, when replacing the shovel with a fork, the shovel pivoted at the tip of the arm is removed and a pivot is provided to pivot the fork, and the tip of the link member for swinging the shovel is attached to the shovel. The tip of the link member was connected to a support part connected to the fork instead of the shovel.

[Problem that the invention attempts to solve]

しかし、アームを上昇させながらフオークを一
定の姿勢で平行移動させるには、チルトシリンダ
をアームの昇降操作に伴つて連続的に伸縮調整し
なければならず、非常に操作が複雑でフオークに
よる昇降作業性を著しく低下させる欠点があつ
た。 However, in order to move the fork in parallel in a constant posture while raising the arm, the tilt cylinder must be adjusted to expand and contract continuously as the arm is raised and lowered, making the operation extremely complicated and raising and lowering the fork. There were drawbacks that significantly reduced performance.

本考案の目的は、簡単な操作でフオークをほぼ
一定の姿勢で昇降させられるようにする点にあ
る。 The purpose of the present invention is to enable a fork to be raised and lowered in a substantially constant posture with simple operation.

[Means for solving problems]

本考案のシヨベルローダの特徴構成は、リンク
部材をチルトアームに着脱自在に連結し、フオー
クに連設した支持部に揺動自在に取付けるフオー
ク用リンク部材が、着脱自在にチルトシリンダと
同軸芯状に連結する連結部を、前記チルトアーム
に形成し、アームに対する前記フオークの枢支軸
芯と前記支持部に対する前記フオーク用リンク部
材の連結中心との間の距離と、前記アームの上下
揺動軸芯と前記チルトシリンダの走行機体に対す
る連結中心との間の距離、及び、前記チルトアー
ムの枢支軸芯と前記チルトアームに対する前記チ
ルトシリンダの連結中心との間の距離が同じであ
り、前記フオーク用リンク部材の長さが、前記チ
ルトアームの枢支軸芯と前記フオークの前記枢支
軸芯との間の距離と同じであることにあり、その
作用効果は次の通りである。 The characteristic configuration of the shovel loader of the present invention is that the link member is detachably connected to the tilt arm, and the link member for the fork, which is swingably attached to the support part connected to the fork, is detachably attached coaxially with the tilt cylinder. A connecting portion to be connected is formed on the tilt arm, and a distance between a pivot axis of the fork to the arm and a connecting center of the fork link member to the support portion, and a vertical swing axis of the arm. and the center of connection of the tilt cylinder to the traveling body, and the distance between the pivot axis of the tilt arm and the center of connection of the tilt cylinder to the tilt arm are the same; The length of the link member is the same as the distance between the pivot axis of the tilt arm and the pivot axis of the fork, and its effects are as follows.

[Effect]

つまり、シヨベルに代えてフオークを付換える
に、リンク部材をチルトアームから取外すと共
に、アームに枢支するフオークの支持部と、チル
トアームに形成した連結部に、フオーク用リンク
部材を連結させるだけで、アームに対するフオー
クの枢支軸芯、前記支持部に対するフオーク用リ
ンク部材の連結中心、チルトアームに対するチル
トシリンダの連結中心、並びに、チルトアームの
枢支軸芯を結ぶフオークの支持部と、フオーク用
リンク部材と、チルトアームの一部と、アームの
一部とによつて、平行四辺形状の平行四連リンク
機構が形成され、また、チルトシリンダの長さ
を、アームの上下揺動軸芯とチルトアームの枢支
軸芯との間の距離に合わせれば、アームの上下揺
動軸芯、チルトアームの枢支軸芯、チルトアーム
に対するチルトシリンダの連結中心、並びに、チ
ルトシリンダの走行機体に対する連結中心を結ぶ
アームの一部と、チルトアームの一部と、チルト
シリンダと、走行機体の一部とによつても平行四
連リンク機構が形成されるために、アームの昇降
に伴つて支持部を連結したフオークが平行に移動
する。 In other words, to replace the shovel with a fork, all you have to do is remove the link member from the tilt arm and connect the fork link member to the fork support part that pivots on the arm and the connection part formed on the tilt arm. , a pivot axis of the fork to the arm, a connection center of the fork link member to the support part, a connection center of the tilt cylinder to the tilt arm, and a support part of the fork that connects the pivot axis of the tilt arm; The link member, part of the tilt arm, and part of the arm form a parallelogram-shaped parallel quadruple link mechanism, and the length of the tilt cylinder is set to the vertical swing axis of the arm. If you match the distance between the pivot axis of the tilt arm, the vertical swing axis of the arm, the pivot axis of the tilt arm, the connection center of the tilt cylinder to the tilt arm, and the connection of the tilt cylinder to the traveling body. A parallel four-link mechanism is also formed by a part of the arm connecting the center, a part of the tilt arm, a tilt cylinder, and a part of the traveling body, so as the arm moves up and down, the support part The connected forks move in parallel.

[Effect of idea]

従つて、アームを昇降操作するだけの簡単な操
作だけで、フオークを一定の姿勢で昇降させるこ
とができ、しかも、チルトシリンダの長さ調整に
よつて平行移動させるフオークの姿勢を簡単に変
化させられ、シヨベルローダでのフオークを利用
した荷の昇降作業性を至つて簡単な構造で向上さ
せることができた。 Therefore, the fork can be raised and lowered in a fixed posture by simply raising and lowering the arm, and the posture of the fork can be easily changed by adjusting the length of the tilt cylinder. This made it possible to improve the workability of lifting and lowering loads using a fork on a shovel loader with an extremely simple structure.

〔Example〕

次に、本考案の実施例を、図面に基づいて説明
する。 Next, embodiments of the present invention will be described based on the drawings.

第２図に示すように、前車輪１を備えた走行機
体３前部の前側に、シヨベル作業装置８を設ける
と共に、後車輪２を備えた走行機体３後部の上部
に、搭乗運転部１０を設けて胴折れ型のシヨベル
ローダを構成してある。 As shown in FIG. 2, a shovel working device 8 is provided on the front side of the front part of the traveling machine body 3 equipped with the front wheels 1, and a boarding operation section 10 is installed at the upper part of the rear part of the traveling machine body 3 equipped with the rear wheels 2. A bendable type shovel loader is constructed.

前記シヨベル作業装置８を構成するに、前記走
行機体３から左右一対のアーム４，４を機体前方
に向けて軸芯P₂周りで上下揺動自在に延出する
と共に、前記両アーム４，４夫々において、それ
と走行機体３とにわたつてアーム用の油圧シリン
ダ５を架設連結し、そして、前記両アーム４，４
の先端どうしにわたつて夫々ブラケツト１１，１
１を介してシヨベル６を軸芯P₃周りで上下揺動
自在に、且つ、着脱自在に取付け、両アーム４，
４の長手方向中間部間を一体連結状態に形成する
連設部４Ａのほぼ中央位置で、チルトアーム７の
長手方向の中間部を枢支し、チルトアーム７の一
端部とシヨベル６に付設したブラケツト１２とに
わたつてリンク部材１３を着脱自在に連動連結
し、チルトアーム７の他端部と走行機体３とにわ
たつてシヨベル上下揺動操作用のチルトシリンダ
９を設け、もつて、油圧シリンダ５によるアーム
４の駆動揺動操作によりシヨベル６を昇降操作
し、そして、チルトシリンダ９によるチルトアー
ム７とリンク部材１３の駆動屈伸操作によりシヨ
ベル６を駆動揺動操作するように構成してある。 The shovel working device 8 is constructed by extending a pair of left and right arms 4, 4 from the traveling machine body 3 toward the front of the machine body so as to be able to swing up and down about an axis _P2 , and both arms 4, 4. In each, a hydraulic cylinder 5 for an arm is constructed and connected between it and the traveling body 3, and both the arms 4, 4
brackets 11 and 1 respectively across the tips of the
1, the shovel 6 is attached so that it can freely swing up and down around the axis P ₃ and can be attached and detached, and both arms 4,
The intermediate portion in the longitudinal direction of the tilt arm 7 is pivotally supported at approximately the center of the connecting portion 4A that integrally connects the intermediate portions in the longitudinal direction of the tilt arm 7, and is attached to one end portion of the tilt arm 7 and the shovel 6. A link member 13 is removably interlocked with the bracket 12, and a tilt cylinder 9 for vertically swinging the shovel is provided between the other end of the tilt arm 7 and the traveling body 3. The shovel 6 is raised and lowered by driving and swinging the arm 4 by the tilt cylinder 9, and the shovel 6 is driven and moved by driving and bending the tilt arm 7 and the link member 13 by the tilt cylinder 9.

前記リンク部材１３をチルトアーム７から取外
した状態で、シヨベル６に代えてフオーク１５を
取付けるに、第１図に示すように、フオーク１５
に対してほぼ直交する方向に連設した支持部１５
Ａに揺動自在に取付けるフオーク用リンク部材２
３を設け、このフオーク用リンク部材２３の遊端
が、着脱自在にチルトシリンダ９と同軸芯状に連
結する連結部２４を、チルトアーム７に形成し、
アーム４に対するフオーク１５の枢支軸芯P₃と
支持部１５Ａに対するフオーク用リンク部材２３
の連結中心Ｘとの間の距離と、アーム４の上下揺
動軸芯P₂とチルトシリンダ９の走行機体３に対
する連結中心Ｙとの間の距離、及び、チルトアー
ム７の枢支軸芯P₄とチルトアーム７に対するチ
ルトシリンダ９の連結中心Ｚとの間の距離を同じ
に設定し、フオーク用リンク部材２３の長さを、
チルトアーム７の枢支軸芯P₄とフオーク１５の
枢支軸芯P₃との間の距離と同じに設定してある。 When attaching the fork 15 in place of the shovel 6 with the link member 13 removed from the tilt arm 7, as shown in FIG.
The support portion 15 is connected in a direction substantially perpendicular to the support portion 15.
Fork link member 2 swingably attached to A
3, and a connecting portion 24 is formed on the tilt arm 7, and the free end of the fork link member 23 is removably connected coaxially with the tilt cylinder 9,
The pivot axis _P3 of the fork 15 with respect to the arm 4 and the fork link member 23 with respect to the support portion 15A
the distance between the connection center X of the arm 4, the distance between the vertical swing axis _P2 of the arm 4 and the connection center Y of the tilt cylinder 9 with respect to the traveling body 3, and the pivot axis P of the tilt arm 7. ₄ and the connection center Z of the tilt cylinder 9 to the tilt arm 7 are set to be the same, and the length of the fork link member 23 is
The distance is set to be the same as the distance between the pivot axis P ₄ of the tilt arm 7 and the pivot axis P ₃ of the fork 15.

従つて、前記油圧シリンダ５を伸縮させてアー
ムを昇降させても、フオーク１５は、上記構造に
よる４連リンク機構によつて同じ姿勢を保つたま
ま第１図仮想線で示すように、平行移動する。 Therefore, even if the hydraulic cylinder 5 is expanded and contracted to raise and lower the arm, the fork 15 remains in the same posture due to the four-link mechanism having the above-mentioned structure, and is not moved in parallel as shown by the imaginary line in FIG. do.

[Brief explanation of the drawing]

図面は本考案に係るシヨベルローダの実施例を
示し、第１図はフオークを取付けた時の作用説明
を示す要部側面図、第２図はシヨベルローダの全
体側面図である。３……走行機体、４……アーム、６……シヨベ
ル、７……チルトアーム、９……チルトシリン
ダ、１３……リンク部材、１５……フオーク、１
５Ａ……支持部、２３……フオーク用リンク部
材、P₂……揺動軸芯、P₃，P₄……枢支軸芯、Ｘ，
Ｙ，Ｚ……連結中心。 The drawings show an embodiment of the shovel loader according to the present invention, and FIG. 1 is a side view of essential parts showing an explanation of the operation when a fork is attached, and FIG. 2 is a side view of the entire shovel loader. 3... Traveling body, 4... Arm, 6... Shovel, 7... Tilt arm, 9... Tilt cylinder, 13... Link member, 15... Fork, 1
5A... Support part, 23... Link member for fork, P ₂ ... Swing axis, P ₃ , P ₄ ... Pivot axis, X,
Y, Z...Connection center.

Claims

[Scope of utility model registration request]

a tilt arm 7 having a shovel 6 attached to the tip of an arm 4 extending from the traveling body 3 so as to be able to swing up and down, and having a longitudinally intermediate portion pivoted to the arm 4;
A link member 13 is provided interlockingly connected between one end of the tilt arm 7 and the shovel 6, and a tilt cylinder for swinging the shovel is provided between the traveling body 3 and the other end of the tilt arm 7. 9 is provided, and a fork 15 is provided in place of the shovel 6.
In the shovel loader, the link member 13 is detachably connected to the tilt arm 7, and the fork link member 23 is swingably attached to a support portion 15A connected to the fork 15. , a connection part that is removably connected coaxially with the tilt cylinder 9 is formed on the tilt arm 7, and the fork 15 is connected to the pivot axis P ₃ of the fork 15 with respect to the arm 4, and the fork is connected with the support part 15A. Connection center X of link member 23
and the vertical swing axis of the arm 4.
The distance between P ₂ and the connection center Y of the tilt cylinder 9 to the traveling body 3, and the pivot axis P ₄ of the tilt arm 7 and the tilt arm 7
The distance between the connection center Z of the tilt cylinder 9 and the fork link member 23 is the same, and the length of the fork link member 23 is the same as the pivot axis of the tilt arm 7.
A shovel loader in which the distance between P ₄ and the pivot axis P ₃ of the fork 15 is the same.