JPH0362687U - - Google Patents
Info
- Publication number
- JPH0362687U JPH0362687U JP12049789U JP12049789U JPH0362687U JP H0362687 U JPH0362687 U JP H0362687U JP 12049789 U JP12049789 U JP 12049789U JP 12049789 U JP12049789 U JP 12049789U JP H0362687 U JPH0362687 U JP H0362687U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- working chamber
- valve
- hydraulic cylinder
- area side
- 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
- 239000007788 liquid Substances 0.000 claims description 6
Landscapes
- Control Of Presses (AREA)
- Press Drives And Press Lines (AREA)
Description
第１図および第２図は本考案の一実施例を示し
、第１図は液圧作動機の側面図、第２図は液圧回
路、第３図は従来例の液圧回路である。
６……液圧シリンダ、７……液体タンク、８…
…液体ポンプ、９……電動機、１０……弁手段、
１４Ａ，１４Ｂ……作用室、１５，１６……流路
、１７……方向切換弁、１８……開閉弁、２０，
２４……逆止め弁、２２……液圧制御弁。
1 and 2 show an embodiment of the present invention, in which FIG. 1 is a side view of a hydraulic actuator, FIG. 2 is a hydraulic circuit, and FIG. 3 is a conventional hydraulic circuit. 6...Hydraulic cylinder, 7...Liquid tank, 8...
...Liquid pump, 9...Electric motor, 10...Valve means,
14A, 14B...action chamber, 15, 16...channel, 17...direction switching valve, 18...opening/closing valve, 20,
24... Check valve, 22... Hydraulic pressure control valve.
Claims (1)
へ摺動自在に嵌挿して受圧面積の異なる作用室を
区割形成した加圧加工作業用の液圧シリンダと、
液圧シリンダへ供給する圧力液体を得るための圧
力源と、液圧シリンダの作動制御を行う弁手段と
を具備し、液圧シリンダには各作用室へ交互に圧
力源からの圧力液体を供給したり各作用室の液体
を低圧側へ排出したりするよう各作用室に流路を
介して方向切換弁を接続し、液圧シリンダの小面
積側作用室へ接続の流路に大面積側作用室内圧力
をパイロツト圧力として開作動する開閉弁を介設
すると共に、開閉弁と小面積側作用室間を接続す
る流路より分岐して大面積側作用室へ接続の流路
に短絡接続した接続路に、大面積側作用室内圧力
をパイロツト圧力として開作動する液圧制御弁と
小面積側作用室から液圧制御弁への液体流れを許
容して逆止め弁とを直列介装し、液圧制御弁は開
作動圧力を開閉弁の開作動圧力よりも低く設定し
て設けて成る液圧作動機。 A hydraulic cylinder for pressurized processing work, in which a piston having a rod is slidably inserted into a cylinder tube to form divided working chambers with different pressure receiving areas;
The hydraulic cylinder is equipped with a pressure source for obtaining pressure liquid to be supplied to the hydraulic cylinder and a valve means for controlling the operation of the hydraulic cylinder, and the hydraulic cylinder is alternately supplied with pressure liquid from the pressure source to each working chamber. A directional control valve is connected to each working chamber via a flow path so that the liquid in each working chamber can be discharged to the low pressure side, and the flow path connected to the working chamber on the small area side of the hydraulic cylinder is connected to the large area side. An on-off valve that opens using the pressure in the working chamber as pilot pressure is installed, and a flow path that connects the on-off valve and the small-area side working chamber is branched off to a short-circuit connection to the flow path that connects to the large-area side working chamber. A hydraulic control valve that opens using the pressure in the large-area side working chamber as a pilot pressure and a check valve that allows liquid to flow from the small-area side working chamber to the hydraulic pressure control valve are interposed in series in the connecting path, A hydraulic control valve is a hydraulic actuator whose opening operating pressure is set lower than the opening operating pressure of an on-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12049789U JPH0810470Y2 (en) | 1989-10-13 | 1989-10-13 | Hydraulic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12049789U JPH0810470Y2 (en) | 1989-10-13 | 1989-10-13 | Hydraulic actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0362687U true JPH0362687U (en) | 1991-06-19 |
| JPH0810470Y2 JPH0810470Y2 (en) | 1996-03-29 |
Family
ID=31668573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12049789U Expired - Fee Related JPH0810470Y2 (en) | 1989-10-13 | 1989-10-13 | Hydraulic actuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0810470Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010069371A (en) * | 2001-03-15 | 2001-07-25 | 송영권 | Apparatus press union eyelet |
-
1989
- 1989-10-13 JP JP12049789U patent/JPH0810470Y2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010069371A (en) * | 2001-03-15 | 2001-07-25 | 송영권 | Apparatus press union eyelet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0810470Y2 (en) | 1996-03-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |