JPS60178067U - Brake protection device for hydraulic actuator - Google Patents
Brake protection device for hydraulic actuatorInfo
- Publication number
- JPS60178067U JPS60178067U JP6297384U JP6297384U JPS60178067U JP S60178067 U JPS60178067 U JP S60178067U JP 6297384 U JP6297384 U JP 6297384U JP 6297384 U JP6297384 U JP 6297384U JP S60178067 U JPS60178067 U JP S60178067U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic actuator
- brake
- hydraulic
- protection device
- brake protection
- 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.)
- Pending
Links
Landscapes
- Operation Control Of Excavators (AREA)
- Component Parts Of Construction Machinery (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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は油圧ショベルの概略構成の側面図、第２図は従
来の旋回用油圧モータの駆動回路図、第３図は本考案の
実施例に係る旋回用油圧モータの駆動回路図である：
・ １・・・・・・下部走行体、２・・・・・・上部
旋回体、３・・・・・・フロント機構、１０・・・・・
・旋回輪、１１・・・・・・旋回用油圧モータ、１１ａ
−・・・・・クラッチ板、１２・・・・・・油圧ポンプ
、１５，２７・・・・・・切換弁、２１・・・・・・ブ
レーキ、２２・・・・・・シリンダ室、２３・・・・・
・ピストン、２４・・・・・・押えばね、２５・・・・
・・摩擦板、２６・・・・・・パイロット油圧ポンプ、
３０・・・・・・ブロック弁。FIG. 1 is a side view of a schematic configuration of a hydraulic excavator, FIG. 2 is a drive circuit diagram of a conventional swing hydraulic motor, and FIG. 3 is a drive circuit diagram of a swing hydraulic motor according to an embodiment of the present invention.・ 1...Lower traveling body, 2...Upper rotating body, 3...Front mechanism, 10...
・Swivel wheel, 11... Hydraulic motor for swing, 11a
-...Clutch plate, 12...Hydraulic pump, 15, 27...Switching valve, 21...Brake, 22...Cylinder chamber, 23...
・Piston, 24...Push it, 25...
...Friction plate, 26...Pilot hydraulic pump,
30...Block valve.
Claims (1)
の油圧アクチュエータと、この油圧アクチュエータを制
動するブレーキと、このブレーキに対して圧油の給排を
行なって当該ブレーキの動作を制御する第１の切換弁と
を備えたものにおいて、前記第１の切換弁が前記ブレー
キの制動動作側に切換えられたとき前記油圧源と前記油
圧アクチュエータの油圧回路を遮断する第２の切換弁を
設けたことを特徴とする油圧アクチュエータのブレーキ
保護装置。A hydraulic source, a hydraulic actuator for driving an inertial load driven by the hydraulic source, a brake for braking the hydraulic actuator, and a hydraulic actuator for controlling the operation of the brake by supplying and discharging pressure oil to the brake. A second switching valve is provided that cuts off the hydraulic circuit of the hydraulic power source and the hydraulic actuator when the first switching valve is switched to the braking operation side of the brake. A brake protection device for a hydraulic actuator, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6297384U JPS60178067U (en) | 1984-05-01 | 1984-05-01 | Brake protection device for hydraulic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6297384U JPS60178067U (en) | 1984-05-01 | 1984-05-01 | Brake protection device for hydraulic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60178067U true JPS60178067U (en) | 1985-11-26 |
Family
ID=30592685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6297384U Pending JPS60178067U (en) | 1984-05-01 | 1984-05-01 | Brake protection device for hydraulic actuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60178067U (en) |
-
1984
- 1984-05-01 JP JP6297384U patent/JPS60178067U/en active Pending
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