JPS5872504U - Fluid pressure control device - Google Patents
Fluid pressure control deviceInfo
- Publication number
- JPS5872504U JPS5872504U JP16730081U JP16730081U JPS5872504U JP S5872504 U JPS5872504 U JP S5872504U JP 16730081 U JP16730081 U JP 16730081U JP 16730081 U JP16730081 U JP 16730081U JP S5872504 U JPS5872504 U JP S5872504U
- Authority
- JP
- Japan
- Prior art keywords
- pilot
- valve
- pressure
- pressure control
- control device
- 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
- 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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来装置の油圧回路図、第２図は本考案の実施
例を示す油圧回路図である。
１・・・・・・可変容量形ポンプ、２・・・・・・ポン
プライン、３・・・・・・流体圧モータ、−４，６・・
・・・・切換弁、７．８・・・・・・パイロット操作弁
、９，１０・・・・・・操作レバー、１６・・・・・・
定容量形ポンプ、３３・・・・・・レギュレータ、３８
・・・・・・主リリーフ弁、３９・・・・・・オンオフ
切換弁、４０・・・・・・圧力制御弁、４２・・・・・
・パイロット弁。FIG. 1 is a hydraulic circuit diagram of a conventional device, and FIG. 2 is a hydraulic circuit diagram showing an embodiment of the present invention. 1... Variable displacement pump, 2... Pump line, 3... Fluid pressure motor, -4, 6...
...Switching valve, 7.8... Pilot operation valve, 9, 10... Operation lever, 16...
Fixed displacement pump, 33...Regulator, 38
...Main relief valve, 39...On-off switching valve, 40...Pressure control valve, 42...
・Pilot valve.
Claims (1)
と可変容量形ポンプとを接続するポンプラインに主リリ
ーフ弁を配設した流体圧制御装置において、主リリーフ
弁のベントラインに、前記切換弁の切換操作に用いるパ
イロット圧によって切換わるオンオフ切換弁と、前記パ
イロット圧に応じて設定圧力が変化する圧力制御弁とを
介装し、前記オンオフ切換弁はパイロット圧をうけない
時ベントラインをしゃ断し、パイロット圧をうけるとベ
ントラインを連通ずるようにしたことを特徴とする流体
圧制御装置。 ２ 圧力制御弁およびオンオフ切換弁にパイロット圧を
供給するパイロット通路に、同一ポンプラインにある他
のアクチュエータを接続したパイロット操作の切換弁の
パイロット圧によって切換わるパイロット弁を介装し、
このパイロット弁はパイロット圧をうけない時パイロッ
ト通路を連通し、パイロット圧をうけるとパイロット通
路をしゃ断する構成とした実用新案登録請求の範囲第１
項記載の流体圧制御装置。[Scope of Claim for Utility Model Registration] 1. In a fluid pressure control device in which a main relief valve is disposed in a pump line connecting a pilot-operated switching valve connected to an actuator and a variable displacement pump, a vent line of the main relief valve is , an on-off switching valve that is switched by pilot pressure used for the switching operation of the switching valve, and a pressure control valve whose set pressure changes according to the pilot pressure, and when the on-off switching valve does not receive pilot pressure. A fluid pressure control device characterized in that a vent line is cut off and the vent line is opened when pilot pressure is applied. 2. A pilot valve that is switched by the pilot pressure of a pilot-operated switching valve connected to another actuator in the same pump line is installed in the pilot passage that supplies pilot pressure to the pressure control valve and the on/off switching valve,
This pilot valve has a configuration in which the pilot passage is communicated when not receiving pilot pressure, and the pilot passage is cut off when receiving pilot pressure.
The fluid pressure control device described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16730081U JPS5872504U (en) | 1981-11-09 | 1981-11-09 | Fluid pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16730081U JPS5872504U (en) | 1981-11-09 | 1981-11-09 | Fluid pressure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5872504U true JPS5872504U (en) | 1983-05-17 |
Family
ID=29959399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16730081U Pending JPS5872504U (en) | 1981-11-09 | 1981-11-09 | Fluid pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5872504U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9226489B2 (en) | 2011-03-18 | 2016-01-05 | Ecolab Usa Inc. | Heat system for killing pests |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5178503A (en) * | 1974-12-30 | 1976-07-08 | Hitachi Construction Machinery | Yuatsushoberuno yuatsuseigyosochi |
| JPS5321379A (en) * | 1976-08-11 | 1978-02-27 | Nippon Sharyo Seizo Kk | Pressure controllable hydraulic circuit |
| JPS5663102A (en) * | 1979-10-29 | 1981-05-29 | Kobe Steel Ltd | Turning oil-pressure circuit for oil-pressure shovel, etc. |
| JPS5680507A (en) * | 1979-12-05 | 1981-07-01 | Kobe Steel Ltd | Control circuit for actuator |
-
1981
- 1981-11-09 JP JP16730081U patent/JPS5872504U/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5178503A (en) * | 1974-12-30 | 1976-07-08 | Hitachi Construction Machinery | Yuatsushoberuno yuatsuseigyosochi |
| JPS5321379A (en) * | 1976-08-11 | 1978-02-27 | Nippon Sharyo Seizo Kk | Pressure controllable hydraulic circuit |
| JPS5663102A (en) * | 1979-10-29 | 1981-05-29 | Kobe Steel Ltd | Turning oil-pressure circuit for oil-pressure shovel, etc. |
| JPS5680507A (en) * | 1979-12-05 | 1981-07-01 | Kobe Steel Ltd | Control circuit for actuator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9226489B2 (en) | 2011-03-18 | 2016-01-05 | Ecolab Usa Inc. | Heat system for killing pests |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5876463U (en) | Hydraulic motor brake release device | |
| JPS5876853U (en) | hydraulic drive | |
| JPS5872504U (en) | Fluid pressure control device | |
| JPS6038901U (en) | fluid brake device | |
| JPS61133102U (en) | ||
| JPS59194603U (en) | Switching delay prevention device for directional valves | |
| JPS59146603U (en) | Hydraulic pilot circuit warm-up device | |
| JPS5835689U (en) | Flow control device for constant output variable displacement hydraulic pump | |
| JPS5882504U (en) | Hydraulic circuit control device | |
| JPS59167098U (en) | Marine propulsion system | |
| JPS58152578U (en) | Pump flow control device | |
| JPS5882557U (en) | Hydraulic closed circuit device | |
| JPS5889601U (en) | Hydraulic circuit device for switching operation | |
| JPS587902U (en) | hydraulic control device | |
| JPS5864691U (en) | Hook operation mechanism | |
| JPS60143067U (en) | Hydraulic release type brake device | |
| JPS6028284U (en) | Hydraulic pump control device | |
| JPS60191704U (en) | hydraulic system | |
| JPS59102649U (en) | Hydraulic drive control device | |
| JPS5949002U (en) | Unloading circuit device for variable displacement hydraulic pump equipped with constant pressure regulator | |
| JPS58123903U (en) | hydraulic control circuit | |
| JPS6120901U (en) | Pump control circuit for cranes, etc. | |
| JPS6062559U (en) | Hydraulic breaker attachment device for work trolley | |
| JPS60187000U (en) | Press brake safety device | |
| JPS5899350U (en) | Control mechanism of swing motor |