JPS59160656U - Control unit for rotating arm of backhoe work vehicle - Google Patents
Control unit for rotating arm of backhoe work vehicleInfo
- Publication number
- JPS59160656U JPS59160656U JP5324083U JP5324083U JPS59160656U JP S59160656 U JPS59160656 U JP S59160656U JP 5324083 U JP5324083 U JP 5324083U JP 5324083 U JP5324083 U JP 5324083U JP S59160656 U JPS59160656 U JP S59160656U
- Authority
- JP
- Japan
- Prior art keywords
- arm
- end portion
- work vehicle
- hydraulic cylinder
- hydraulic motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面は本考案の実施例を示し、第１図は作業車の全体側
面図、第２図はアームの正面図、第３図は第２図の■−
■縦断面図である。 ７・・・・・・ブーム、８・・
・・・・アーム、８ａ・・・・・・アーム基端側部分、
８ｂ・・・・・・アーム先端側部分、９・・・・・・パ
ケット、２８・・・・・・ブレーキ用油圧シリンダ、Ｂ
・・・・・・ネガティブブレーキ、Ｃ３・・・・・・ア
ーム揺動用油圧シリンダ、Ｃ４・・・・・・パケット揺
動用油圧シリンダ、Ｍ・・・・・・油圧モータ、■・・
・・・・制御弁。The drawings show an embodiment of the present invention, in which Fig. 1 is an overall side view of the working vehicle, Fig. 2 is a front view of the arm, and Fig. 3 is a view of the part shown in Fig. 2.
■It is a vertical cross-sectional view. 7...Boom, 8...
...Arm, 8a...Arm proximal end part,
8b... Arm tip side part, 9... Packet, 28... Brake hydraulic cylinder, B
...Negative brake, C3...Hydraulic cylinder for arm swing, C4...Hydraulic cylinder for packet swing, M...Hydraulic motor, ■...
...Control valve.
Claims (1)
用油圧シリンダＣ３及び前記ブーム７に連結されたアー
ム基端側部分８ａと、パケット９及びパケット回動用シ
リンダＣ１を備えたアーム先端側部分８ｂに分割形成し
、前記アーム先端側部分８ｂをその長手方向への軸芯２
周りで油圧モータＭにより回転自在に前記アーム基端側
部分８ａに取付けたバッグホウ作業車において、前記ア
ーム基端側部分８ａに対するアーム先端側部分８ｂの回
転を阻止するネガティブレーキＢを、油圧シリンダ２８
により作用解除自在に設け、前記ブレーキ用油圧シリン
ダ２８の油路に、前記油圧モータＭの作動に際してのみ
ブレーキ解除用圧油が供給されるように、前記油圧モー
タＭの操作に連係して自動操作される制御弁■を設けで
あるバックホウ作業車の回転アーム用操作部。 １An arm 8 that is swingably attached to the boom 7 is divided into an arm swinging hydraulic cylinder C3 and an arm base end portion 8a connected to the boom 7, and an arm tip end portion that includes a packet 9 and a packet rotation cylinder C1. 8b, and the arm tip end portion 8b is aligned with the axis 2 in the longitudinal direction.
In the baghoe work vehicle, which is rotatably attached to the arm proximal end portion 8a by a hydraulic motor M, a negative rake B that prevents rotation of the arm distal end portion 8b with respect to the arm proximal end portion 8a is moved by a hydraulic cylinder 28.
automatic operation in conjunction with the operation of the hydraulic motor M so that pressure oil for brake release is supplied to the oil passage of the brake hydraulic cylinder 28 only when the hydraulic motor M is activated; The operating part for the rotary arm of a backhoe work vehicle is equipped with a control valve. 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5324083U JPS59160656U (en) | 1983-04-09 | 1983-04-09 | Control unit for rotating arm of backhoe work vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5324083U JPS59160656U (en) | 1983-04-09 | 1983-04-09 | Control unit for rotating arm of backhoe work vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59160656U true JPS59160656U (en) | 1984-10-27 |
| JPH0124213Y2 JPH0124213Y2 (en) | 1989-07-24 |
Family
ID=30183588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5324083U Granted JPS59160656U (en) | 1983-04-09 | 1983-04-09 | Control unit for rotating arm of backhoe work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59160656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6225627A (en) * | 1985-07-26 | 1987-02-03 | Komatsu Ltd | Controller for power shovel |
-
1983
- 1983-04-09 JP JP5324083U patent/JPS59160656U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6225627A (en) * | 1985-07-26 | 1987-02-03 | Komatsu Ltd | Controller for power shovel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0124213Y2 (en) | 1989-07-24 |
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