JPH0177101U - - Google Patents
Info
- Publication number
- JPH0177101U JPH0177101U JP1987172194U JP17219487U JPH0177101U JP H0177101 U JPH0177101 U JP H0177101U JP 1987172194 U JP1987172194 U JP 1987172194U JP 17219487 U JP17219487 U JP 17219487U JP H0177101 U JPH0177101 U JP H0177101U
- Authority
- JP
- Japan
- Prior art keywords
- switching valve
- switching
- opening
- valve
- pump
- 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
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図はこの考案の１実施例を示す油圧回路図
、第２図はこの考案を構成する圧力センサの他の
実施例、第３図は従来例の油圧回路図である。
１……ポンプ、２……流量制御弁、３……開度
センサ、４〜７……切換弁、８……チエツク弁、
９……アキユムレータ、１０……圧力センサ、１
４〜１７……アクチユエータ、２７……供給流路
。
FIG. 1 is a hydraulic circuit diagram showing one embodiment of this invention, FIG. 2 is another embodiment of a pressure sensor constituting this invention, and FIG. 3 is a hydraulic circuit diagram of a conventional example. 1...Pump, 2...Flow rate control valve, 3...Opening sensor, 4-7...Switching valve, 8...Check valve,
9...Accumulator, 10...Pressure sensor, 1
4-17... actuator, 27... supply channel.
Claims (1)
する複数のアクチユエータと、前記ポンプから前
記アクチユエータへ供給される圧油の方向を制御
する複数の切換弁と、前記切換弁にポンプの吐出
流体を供給する供給流路と、供給流路から逆流を
遮断するチエツク弁を介して接続され他のアクチ
ユエータを駆動するアキユムレータとよりなる油
圧制御回路において、ポンプと前記供給流路との
間に設け切換弁の切換信号を受けて前記切換弁の
切換に先立ち該切換弁に個別に設定された開度に
制御される電磁制御式流量制御弁と、流量制御弁
の開度が前記切換弁の個別開度設定値以下のとき
切換弁切換えの指令をすべく開度を検出する開度
センサと、前記切換弁の切換信号が無い場合にア
キユムレータの充填の完了（未了）に応じて前記
流量制御弁の開度を最小（最大）に制御すべく充
填を検出する圧力センサとを具備することを特徴
とする油圧制御回路。 (2) 圧力センサが圧力スイツチであることを特
徴とする実用新案登録請求の範囲第１項記載の油
圧制御回路。 (3) アキユムレータがピストン形アキユムレー
タであり、圧力センサが前記アキユムレータの充
填限でピストンにより作動する位置検出センサで
あることを特徴とする実用新案登録請求の範囲第
１項記載の油圧制御装置。[Claims for Utility Model Registration] (1) A pump, a plurality of actuators driven by pressure oil from the pump, and a plurality of switching valves that control the direction of the pressure oil supplied from the pump to the actuator. , a hydraulic control circuit comprising a supply passage for supplying fluid discharged from the pump to the switching valve, and an accumulator connected via a check valve for blocking backflow from the supply passage and driving another actuator; an electromagnetically controlled flow control valve which is provided between the supply flow path and is controlled to an opening degree individually set for the switching valve in response to a switching signal from the switching valve, and prior to switching of the switching valve; An opening sensor detects the opening in order to issue a command to switch the switching valve when the opening is less than the individual opening setting value of the switching valve, and a sensor that detects the opening of the switching valve when the switching signal of the switching valve is not received. and a pressure sensor that detects filling so as to control the opening degree of the flow rate control valve to a minimum (maximum) according to the flow rate control valve. (2) The hydraulic control circuit according to claim 1, wherein the pressure sensor is a pressure switch. (3) The hydraulic control device according to claim 1, wherein the accumulator is a piston-type accumulator, and the pressure sensor is a position detection sensor operated by a piston at the filling limit of the accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987172194U JPH0177101U (en) | 1987-11-11 | 1987-11-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987172194U JPH0177101U (en) | 1987-11-11 | 1987-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0177101U true JPH0177101U (en) | 1989-05-24 |
Family
ID=31464174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987172194U Pending JPH0177101U (en) | 1987-11-11 | 1987-11-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0177101U (en) |
-
1987
- 1987-11-11 JP JP1987172194U patent/JPH0177101U/ja active Pending
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