JPS5992201U - hydraulic control device - Google Patents
hydraulic control deviceInfo
- Publication number
- JPS5992201U JPS5992201U JP18834682U JP18834682U JPS5992201U JP S5992201 U JPS5992201 U JP S5992201U JP 18834682 U JP18834682 U JP 18834682U JP 18834682 U JP18834682 U JP 18834682U JP S5992201 U JPS5992201 U JP S5992201U
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- control device
- valve
- pressure
- hydraulic control
- 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
図面はこの考案の実施例を示すもので、第１図は第１実
施例の回路図、第２図は第１実施例の断面図、第３図は
第２実施例の要部断面図である。
１・・・・・・可変ポンプ、３． ６． ７・・・・・
・中立通路、ａ、 ｂ・・・・・・バルブ機構、９・
・・・・・圧力発生源たる絞り、１０・・・・・・絞り
、３１・・・・・・流量調整切換弁、６８・・・・・・
メータリングバルブ。The drawings show embodiments of this invention; Fig. 1 is a circuit diagram of the first embodiment, Fig. 2 is a sectional view of the first embodiment, and Fig. 3 is a sectional view of essential parts of the second embodiment. be. 1...variable pump, 3. 6. 7...
・Neutral passage, a, b... Valve mechanism, 9.
... Restriction that is a pressure generation source, 10 ... Restriction, 31 ... Flow rate adjustment switching valve, 68 ...
metering valve.
Claims (1)
制御ができるバルブ機構を備えた油圧制御装置において
、アクチェータの負荷変動に関係なく、常に開口面積に
応じた一定の流量を供給する流量調整切換弁と、この流
量調整切換弁の切換動作によって動作するメータリング
バルブと、当該バルブ機構が中立位置にあるときに開く
中立通路を設け、この中立通路の流通過程に絞りを設け
° るとともに、この絞りの下流側にネガティブ
制御用のパイロット圧を発生させるための圧力発生源を
設け、この圧力発生源の圧力に応じて可変ポンプの吐出
圧を調整する傾転角制御装置を備えたネガティブコント
ロール機構とからなり、上記メータリングバルブには、
当該アクチェータの戻り側の流量を再生させる再生機構
を設けた油圧制御装置。In a hydraulic control device equipped with a valve mechanism that can perform meter-in control according to the amount of movement of the spool of the flow rate adjustment switching valve, the flow rate adjustment switching valve always supplies a constant flow rate according to the opening area, regardless of load fluctuations on the actuator. A metering valve that is operated by the switching operation of the flow rate adjustment switching valve, and a neutral passage that opens when the valve mechanism is in the neutral position are provided, and a restriction is provided in the flow process of this neutral passage. A negative control mechanism is provided with a pressure generation source for generating pilot pressure for negative control on the downstream side of the system, and is equipped with a tilting angle control device that adjusts the discharge pressure of the variable pump according to the pressure of this pressure generation source. The above metering valve consists of:
A hydraulic control device equipped with a regeneration mechanism that regenerates the flow rate on the return side of the actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18834682U JPS5992201U (en) | 1982-12-13 | 1982-12-13 | hydraulic control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18834682U JPS5992201U (en) | 1982-12-13 | 1982-12-13 | hydraulic control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5992201U true JPS5992201U (en) | 1984-06-22 |
Family
ID=30406343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18834682U Pending JPS5992201U (en) | 1982-12-13 | 1982-12-13 | hydraulic control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5992201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998036175A1 (en) * | 1997-02-17 | 1998-08-20 | Komatsu Ltd. | Meter-out flow rate control valve |
-
1982
- 1982-12-13 JP JP18834682U patent/JPS5992201U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998036175A1 (en) * | 1997-02-17 | 1998-08-20 | Komatsu Ltd. | Meter-out flow rate control valve |
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