JPH026126Y2

JPH026126Y2 -

Info

Publication number: JPH026126Y2
Application number: JP9657183U
Authority: JP
Priority date: 1983-06-24
Filing date: 1983-06-24
Publication date: 1990-02-14
Also published as: JPS604641U

Description

【考案の詳細な説明】本考案はドーザーシヨベル、ホイールローダ、
パワーシヨベル等の掘削積込機の捕正装置に関す
るものである。[Detailed description of the invention] This invention is used for dozer shovels, wheel loaders,
This invention relates to a capture device for excavation and loading machines such as power shovels.

従来、この種の掘削積込機としては、第１図に
示すように、ブームａ、アームｂ、バケツト１７
を備え、せれぞれをブームシリンダｄ、アームシ
リンダｅ、バケツトシリンダｆで上下揺動して掘
削積込みするようにしたものが知られている。 Conventionally, this type of excavation loading machine has a boom a, an arm b, and a bucket 17, as shown in Fig. 1.
It is known to have a boom cylinder d, an arm cylinder e, and a bucket cylinder f, each of which is vertically swung for excavation and loading.

この様な掘削積込機により、第１図仮想線で示
すように、バケツトｃを水平に移動して水平掘削
する場合には、ブームａ、アームｂ、バケツトｃ
が円弧運動するから、各シリンダｄ，ｅ，ｆを伸
縮作動してブームａ、アームｂ、バケツトｃを揺
動させなければならず、この様に各シリンダｄ，
ｅ，ｆを動作制御するのは非常に面倒である。 When using such an excavation/loading machine to horizontally move bucket c to perform horizontal excavation as shown by the imaginary line in Figure 1, boom a, arm b, bucket c
moves in an arc, so each cylinder d, e, and f must be telescopically operated to swing the boom a, arm b, and bucket c, and in this way, each cylinder d,
It is extremely troublesome to control the operations of e and f.

そこで、本出願人は先に第２図に示すように揺
動自在なるブーム１に揺動可能に連結されたアー
ム２に補正レバ３を揺動可能に設け、アーム２に
補正用シリンダ４の一端側を揺動可能に設けると
共に、アーム２に揺動可能に取付けられたバケツ
ト５にバケツト用シリンダ６の一端側を揺動可能
に設け、ブーム１に補正リンク７の一端側を揺動
可能に設け、補正用シリンダ４の他端側を補正レ
バ３に連結すると共に、バケツト用シリンダ６の
他端側と補正リンク７の他端側とを、補正レバ３
に連結し、アームシリンダ８が伸長するとブーム
シリンダ９が縮少するようにした補正装置を出願
した。 Therefore, as shown in FIG. 2, the applicant previously provided a correction lever 3 in a swingable manner to an arm 2 which is swingably connected to a swingable boom 1, and installed a correction cylinder 4 in the arm 2. One end side is swingably provided, one end side of the bucket cylinder 6 is swingably provided on the bucket belt 5 which is swingably attached to the arm 2, and one end side of the compensation link 7 is swingably provided on the boom 1. The other end of the correction cylinder 4 is connected to the correction lever 3, and the other end of the bucket cylinder 6 and the other end of the correction link 7 are connected to the correction lever 3.
The patent application has been filed for a correction device in which the boom cylinder 9 is retracted when the arm cylinder 8 is extended.

しかし、この補正装置であると補正レバ３、補
正用シリンダ４がアーム２に装着してあるので、
作業機全体の重心位置が先端（アーム２側）に移
動し、安定性、強度の面に悪影響があるとの不具
合を有する。 However, in this correction device, the correction lever 3 and the correction cylinder 4 are attached to the arm 2, so
The problem is that the center of gravity of the entire working machine moves toward the tip (toward the arm 2 side), which adversely affects stability and strength.

本考案は上記の事情に鑑みなされたものであ
り、その日的は、自動的に水平掘削できると共
に、安定性強度の面で優れた掘削積込機の補正装
置を提供することである。 The present invention was developed in view of the above circumstances, and its purpose is to provide a correction device for an excavator and loader that can automatically perform horizontal excavation and is excellent in terms of stability and strength.

以下第３図以降を参照して本考案の実施例を説
明する。 Embodiments of the present invention will be described below with reference to FIG. 3 and subsequent figures.

第３図は全体図であり、下部走行体Ａには上部
車体Ｂが施回自在に装着され、上部車体Ｂに掘削
積込機Ｃが装着してあつて、パワーシヨベルを構
成している。 FIG. 3 is an overall view, in which an upper vehicle body B is rotatably mounted on the lower traveling body A, and an excavator and loader C is mounted on the upper vehicle body B, thereby forming a power shovel.

前記掘削積込機Ｃは、上部車体Ｂにはピン１０
で上下揺動自在に枢着連結した第１ブーム１１、
第１ブーム１１にピン１２で枢着した第２ブーム
１３、第２ブーム１３の先端部にピン１４で上下
揺動自在に枢着連結したアーム１５、アーム１５
の先端部にピン１６で上下揺動自在に枢着連結し
たバケツト１７を備えている。 The excavating and loading machine C has a pin 10 on the upper body B.
a first boom 11 which is pivotably connected to be able to swing up and down;
A second boom 13 is pivotally connected to the first boom 11 with a pin 12; an arm 15 is pivotally connected to the tip of the second boom 13 with a pin 14;
A bucket 17 is provided at the tip of the bucket 17, which is pivotally connected to the tip of the bucket 17 by a pin 16 so as to be able to swing vertically.

前記上部車体Ｂと第１ブーム１１との間にはブ
ームシリンダ１８がピン１９，２０で枢着連結さ
れ、第１ブーム１１と第２ブーム１３との間には
ブーム調整シリンダ２１がピン２２，２３で枢着
連結され、第２ブーム１３とアーム１５との間に
は補正シリンダ２７がピン２５，２６で枢着連結
され、バケツト１７と第２ブーム１３との間には
バケツトシリンダ２４がピン２８，２９で枢着連
結され、第１ブーム１１とアーム１５とにはアー
ムシリンダ３０がピン３１，３２で枢着連結され
ている。 A boom cylinder 18 is pivotally connected between the upper vehicle body B and the first boom 11 by pins 19 and 20, and a boom adjustment cylinder 21 is connected between the first boom 11 and the second boom 13 by pins 22 and 20. A correction cylinder 27 is pivotally connected between the second boom 13 and the arm 15 through pins 25 and 26, and a bucket cylinder 24 is connected between the bucket 17 and the second boom 13. An arm cylinder 30 is pivotally connected to the first boom 11 and arm 15 through pins 31 and 32.

前記ブームシリンダ１８、アームシリンダ３
０、バケツトシリンダ２４、ブーム調整シリンダ
２１には、ブーム操作弁３３、ヤーム操作弁３
４、バケツト操作弁３５、ブーム調整操作弁３６
を介してポンプ３７の吐出圧油が供給制御される
と共に、ブーム調整シリンダ２１の第１、第２室
２１₁，２１₂と補正シリンダ２７の第１、第２室
２７₁，２７₂はそれぞれ連通されて相互に逆方向
に伸縮作動するようにしてある。 The boom cylinder 18 and the arm cylinder 3
0, bucket cylinder 24, boom adjustment cylinder 21, boom operation valve 33, yard operation valve 3
4. Bucket operation valve 35, boom adjustment operation valve 36
The discharge pressure oil of the pump 37 is controlled to be supplied through the pump 37, and the first and second chambers 21 ₁ and 21 ₂ of the boom adjustment cylinder 21 and the first and second chambers 27 ₁ and 27 ₂ of the correction cylinder 27 are controlled respectively. They are communicated with each other so that they can expand and contract in opposite directions.

しかして、アームシリンダ３０を伸張するとア
ーム１５がピン１４を中心として上方に揺動する
と共に、補正シリンダ２７が縮少し、ブーム調整
シリンダ２１が伸張するから第２ブーム１３がピ
ン１２を中心として下方に揺動する。 When the arm cylinder 30 is extended, the arm 15 swings upward about the pin 14, the correction cylinder 27 is contracted, and the boom adjustment cylinder 21 is extended, so that the second boom 13 is moved downward about the pin 12. to sway.

それによつて、アーム１５が下方に移動するの
で、バケツト１７は地表に沿つて水平に移動す
る。 As a result, the arm 15 moves downward, and the bucket 17 moves horizontally along the ground surface.

したがつて、自動的に水平掘削を行なうことが
できる。 Therefore, horizontal excavation can be performed automatically.

また、アーム１５には何らの補正手段が装着さ
れていないから、掘削積込機Ｃの重心はブーム寄
位置となり、安定性が向上すると共に、強度的に
も優れたものとなる。 Further, since no correction means is attached to the arm 15, the center of gravity of the excavating and loading machine C is located near the boom, improving stability and providing excellent strength.

本考案は以上の様になり、アームシリンダ３０
を伸張するとアーム１５が上方に揺動すると共
に、補正シリンダ２７が縮少し、ブーム調整シリ
ンダ２１が伸張するから第２ブーム１３が下方に
揺動する。 The present invention is as described above, and the arm cylinder 30
When extended, the arm 15 swings upward, the correction cylinder 27 contracts, and the boom adjustment cylinder 21 extends, causing the second boom 13 to swing downward.

これによつて、アーム１５が下方に移動するの
で、バケツト１７は地表に沿つて水平に移動す
る。 As a result, the arm 15 moves downward, and the bucket 17 moves horizontally along the ground surface.

また、アーム１５には何らの捕正手段が装着さ
れていないから、掘削積込機Ｃの重心はブーム寄
位置となり、安定性が向上すると共に、強度的に
も優れたものとなる。 Further, since no catching means is attached to the arm 15, the center of gravity of the excavating and loading machine C is located close to the boom, improving stability and providing excellent strength.

したがつて、自動的に水平掘削できると共に、
安定性、強度の面で優れたものとなる。 Therefore, horizontal excavation can be performed automatically, and
It has excellent stability and strength.

[Brief explanation of drawings]

第１図、第２図は従来例の説明図、第３図は本
考案の実施例を示す全体説明図、第４図は油圧回
路図である。１１は第１ブーム、１３は第２ブーム、１５は
アーム、１７はバケツト、１８はブームシリン
ダ、２１はブーム調整シリンダ、２４はバケツト
シリンダ、２７は補正シリンダ、３０はアームシ
リンダ。 1 and 2 are explanatory diagrams of a conventional example, FIG. 3 is an overall explanatory diagram showing an embodiment of the present invention, and FIG. 4 is a hydraulic circuit diagram. 11 is a first boom, 13 is a second boom, 15 is an arm, 17 is a bucket, 18 is a boom cylinder, 21 is a boom adjustment cylinder, 24 is a bucket cylinder, 27 is a correction cylinder, and 30 is an arm cylinder.

Claims

[Scope of utility model registration request]

A first boom 11 is provided on the vehicle body so as to be swingable up and down,
A boom cylinder 18 is pivotally connected between the first boom 11 and the vehicle body, and the first boom 1
1 is provided with a second boom 13 that can freely swing up and down, and a boom adjustment cylinder 21 is provided between the second boom 13 and the first boom 11 so that when the boom adjustment cylinder 21 is extended, the second boom 13 is moved downward. An arm 15 is attached to the second boom 13 so as to be able to swing up and down, and the arm 15 includes a bucket 17 that can be moved up and down.
and the second boom 13, the bucket cylinder 2
4 are pivotally connected, and the first boom 11 and arm 1
The arm cylinder 30 is pivotally connected to the second boom 1 so that the arm 15 swings upward when the arm cylinder 30 is extended.
A correction cylinder 27 is pivotally connected between the correction cylinder 27 and the arm 15 so that the correction cylinder 27 contracts when the arm 15 swings upward.
and the boom adjustment cylinder 21 are hydraulically connected so that when the correction cylinder 27 is retracted, the boom adjustment cylinder 21 is extended.