JPH02149882U - - Google Patents
Info
- Publication number
- JPH02149882U JPH02149882U JP5905389U JP5905389U JPH02149882U JP H02149882 U JPH02149882 U JP H02149882U JP 5905389 U JP5905389 U JP 5905389U JP 5905389 U JP5905389 U JP 5905389U JP H02149882 U JPH02149882 U JP H02149882U
- Authority
- JP
- Japan
- Prior art keywords
- diameter piston
- receiving chamber
- discharge passage
- pressure receiving
- small
- 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
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
第１図、第２図、第３図、第４図は本考案の第
１・第２・第３・第４実施例の線図的構成説明図
、第５図、第６図はポンプ特性の図表、第７図は
従来例の説明図である。
１０は可変容量ポンプ、１０ａは吐出路、１１
は容量可変部材、１２は大径ピストン、１３は小
径ピストン、１４はロードセンシング弁。
Figures 1, 2, 3, and 4 are diagrammatic configuration explanatory diagrams of the first, second, third, and fourth embodiments of the present invention, and Figures 5 and 6 are pump characteristics. FIG. 7 is an explanatory diagram of a conventional example. 10 is a variable displacement pump, 10a is a discharge path, 11
12 is a large diameter piston, 13 is a small diameter piston, and 14 is a load sensing valve.
Claims (1)
ピストン１２で容量小方向、小径ピストン１３で
容量大方向に作動し、その大径ピストン受圧室１
２ａをロードセンシング弁１４で吐出路１０ａに
連通制御し、前記小径ピストン受圧室１３ａを吐
出路１０ａに接続し、 前記ロードセンシング弁１４を吐出路１０ａと
大径ピストン受圧室１２ａの連通面積小方向に押
すバネ１９を設け、該バネ１９のセツト荷重を吐
出圧に比例して小さくする手段を設けたことを特
徴とする可変容量ポンプの容量制御装置。[Claims for Utility Model Registration] The capacity adjustment member 11 of the variable displacement pump 10 is operated in the direction of small capacity by the large diameter piston 12 and in the direction of large capacity by the small diameter piston 13, and the large diameter piston pressure receiving chamber 1
2a is controlled to communicate with the discharge passage 10a by a load sensing valve 14, the small diameter piston pressure receiving chamber 13a is connected to the discharge passage 10a, and the load sensing valve 14 is controlled to communicate with the discharge passage 10a and the large diameter piston pressure receiving chamber 12a in a direction with a small communication area. 1. A displacement control device for a variable displacement pump, characterized in that a spring 19 is provided to push the pump, and means is provided to reduce the set load of the spring 19 in proportion to the discharge pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5905389U JPH02149882U (en) | 1989-05-24 | 1989-05-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5905389U JPH02149882U (en) | 1989-05-24 | 1989-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02149882U true JPH02149882U (en) | 1990-12-21 |
Family
ID=31585214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5905389U Pending JPH02149882U (en) | 1989-05-24 | 1989-05-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02149882U (en) |
-
1989
- 1989-05-24 JP JP5905389U patent/JPH02149882U/ja active Pending