JPH01133504U - - Google Patents
Info
- Publication number
- JPH01133504U JPH01133504U JP2697588U JP2697588U JPH01133504U JP H01133504 U JPH01133504 U JP H01133504U JP 2697588 U JP2697588 U JP 2697588U JP 2697588 U JP2697588 U JP 2697588U JP H01133504 U JPH01133504 U JP H01133504U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pressure
- cylinder
- hydraulic cylinder
- hydraulic
- 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
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図は第１の考案の実施例の構成を示す断面
図、第２図は第２の考案の実施例の構成を示す断
面図である。
２…油圧源、３…方向切換弁、４…シリンダチ
ユーブ、１３，１４…バイパス用油路、１６，１
７…開閉弁、３１…シリンダチユーブ、４０，４
１…パイロツト弁、５０，５１…油路、５３，５
４…開閉弁。
FIG. 1 is a sectional view showing the structure of an embodiment of the first invention, and FIG. 2 is a sectional view showing the structure of an embodiment of the second invention. 2... Hydraulic power source, 3... Directional switching valve, 4... Cylinder tube, 13, 14... Bypass oil path, 16, 1
7... Opening/closing valve, 31... Cylinder tube, 40, 4
1... Pilot valve, 50, 51... Oil path, 53, 5
4...Opening/closing valve.
Claims (1)
圧油によつて作動する油圧シリンダにおいて、該
油圧シリングのシリンダチユーブに油タンクへの
戻り回路となるバイパスを設けるとともに、シリ
ンダ室が高圧時に前記バイパスを閉じ、低圧時に
は該バイパスを開く開閉弁を設けたことを特徴と
する油圧シリンダ。 (2) 油圧源から方向切換弁を介して供給される
圧油によつて作動する油圧シリンダにおいて、前
記方向切換弁とシリンダ室との間の油路に該油路
を絞る開閉弁と、シリンダ室が高圧時には該開閉
弁を開き、低圧時には該開閉弁を絞り側に切り換
えるパイロツト弁を設けたことを特徴とする油圧
シリンダ。[Claims for Utility Model Registration] (1) In a hydraulic cylinder operated by pressure oil supplied from a hydraulic source through a directional control valve, a bypass serving as a return circuit to an oil tank is provided in the cylinder tube of the hydraulic cylinder. 1. A hydraulic cylinder, further comprising an on-off valve that closes the bypass when the pressure in the cylinder chamber is high and opens the bypass when the pressure is low. (2) In a hydraulic cylinder operated by pressure oil supplied from a hydraulic source via a directional control valve, an on-off valve that throttles the oil passage between the directional control valve and the cylinder chamber, and a cylinder A hydraulic cylinder comprising a pilot valve that opens the on-off valve when the pressure in the chamber is high and switches the on-off valve to the throttle side when the pressure is low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2697588U JPH01133504U (en) | 1988-02-29 | 1988-02-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2697588U JPH01133504U (en) | 1988-02-29 | 1988-02-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01133504U true JPH01133504U (en) | 1989-09-12 |
Family
ID=31249078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2697588U Pending JPH01133504U (en) | 1988-02-29 | 1988-02-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01133504U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003083306A (en) * | 2001-09-10 | 2003-03-19 | Kuken:Kk | Air saw |
-
1988
- 1988-02-29 JP JP2697588U patent/JPH01133504U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003083306A (en) * | 2001-09-10 | 2003-03-19 | Kuken:Kk | Air saw |