JPH0482384U - - Google Patents
Info
- Publication number
- JPH0482384U JPH0482384U JP12504790U JP12504790U JPH0482384U JP H0482384 U JPH0482384 U JP H0482384U JP 12504790 U JP12504790 U JP 12504790U JP 12504790 U JP12504790 U JP 12504790U JP H0482384 U JPH0482384 U JP H0482384U
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- switching valve
- servo piston
- supplies
- spring
- 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
- 230000008713 feedback mechanism Effects 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Reciprocating Pumps (AREA)
Description
第１図は本考案の実施例を示す断面図、第２図
はその回路図、第３図は従来例の断面図、第４図
はその回路図である。
２０は可変ポンプ、２１は斜板、２２はサーボ
ピストン、２３は第１室、２４は切換弁、２５は
第２室、３０はスプリング、３６はソレノイド。
FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a circuit diagram thereof, FIG. 3 is a sectional view of a conventional example, and FIG. 4 is a circuit diagram thereof. 20 is a variable pump, 21 is a swash plate, 22 is a servo piston, 23 is a first chamber, 24 is a switching valve, 25 is a second chamber, 30 is a spring, and 36 is a solenoid.
Claims (1)
ストン２２と、このサーボピストン２２を流量減
方向に移動する第２室２５に自己の吐出圧油を供
給する切換弁２４と、この切換弁２４を中立位置
に保持するスプリング３０と、前記サーボピスト
ン２２の移動によつてスプリング３０の取付け荷
重を制御するフイードバツク機構と、前記切換弁
２４にスプリング３０に抗する方向の力を付与す
るソレノイド３６を備え、 前記サーボピストン２２を流量増方向に押す第
１室２３に自己の吐出圧油を供給し、前記切換弁
２４を連通方向に押す受圧室に自己の吐出圧油を
供給するようにしたことを特徴とする可変ポンプ
の流量制御装置。[Claims for Utility Model Registration] A servo piston 22 connected to the swash plate 21 of the variable pump 20, and a switching valve 24 that supplies its own discharge pressure oil to the second chamber 25 that moves the servo piston 22 in the flow rate reduction direction. a spring 30 that holds the switching valve 24 in a neutral position; a feedback mechanism that controls the mounting load of the spring 30 by movement of the servo piston 22; and a force acting on the switching valve 24 in a direction that resists the spring 30. It supplies its own discharge pressure oil to the first chamber 23 that pushes the servo piston 22 in the flow rate increasing direction, and supplies its own discharge pressure oil to the pressure receiving chamber that pushes the switching valve 24 in the communication direction. A flow rate control device for a variable pump, characterized in that the flow rate control device is configured to supply a variable pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12504790U JPH0482384U (en) | 1990-11-29 | 1990-11-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12504790U JPH0482384U (en) | 1990-11-29 | 1990-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0482384U true JPH0482384U (en) | 1992-07-17 |
Family
ID=31872667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12504790U Pending JPH0482384U (en) | 1990-11-29 | 1990-11-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0482384U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002202063A (en) * | 2000-12-28 | 2002-07-19 | Kayaba Ind Co Ltd | Swash plate type piston pump |
| WO2017195589A1 (en) * | 2016-05-10 | 2017-11-16 | 川崎重工業株式会社 | Tilt angle control device for hydraulic rotary machine |
-
1990
- 1990-11-29 JP JP12504790U patent/JPH0482384U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002202063A (en) * | 2000-12-28 | 2002-07-19 | Kayaba Ind Co Ltd | Swash plate type piston pump |
| WO2017195589A1 (en) * | 2016-05-10 | 2017-11-16 | 川崎重工業株式会社 | Tilt angle control device for hydraulic rotary machine |
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