JPH0161475U - - Google Patents
Info
- Publication number
- JPH0161475U JPH0161475U JP15595587U JP15595587U JPH0161475U JP H0161475 U JPH0161475 U JP H0161475U JP 15595587 U JP15595587 U JP 15595587U JP 15595587 U JP15595587 U JP 15595587U JP H0161475 U JPH0161475 U JP H0161475U
- Authority
- JP
- Japan
- Prior art keywords
- displacement pump
- spool
- pump
- horsepower
- variable displacement
- 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 6
- 238000010586 diagram Methods 0.000 description 3
Description
第１図及び第２図はそれぞれ本考案の実施例の
油圧回路図、第３図は本考案のＰｄ―Ｑ線図、第
４図は従来装置の油圧回路図である。
１……可変容量形ポンプ、２……サーボシリン
ダ、３……サーボ弁、４……スリーブ、５……ス
プール、８……馬力設定ばね、１０，１０′，１
１，１１′，１２，１２′……パイロツトピスト
ン、１７，１７′……切換弁。
1 and 2 are hydraulic circuit diagrams of an embodiment of the present invention, FIG. 3 is a Pd-Q diagram of the present invention, and FIG. 4 is a hydraulic circuit diagram of a conventional device. 1... Variable displacement pump, 2... Servo cylinder, 3... Servo valve, 4... Sleeve, 5... Spool, 8... Horsepower setting spring, 10, 10', 1
1, 11', 12, 12'...Pilot piston, 17, 17'...Switching valve.
Claims (1)
ーボシリンダと、一端にポンプの吐出圧力を導き
他端に馬力設定ばねを配設したスプールとスプー
ルに嵌挿され且つサーボシリンダと連動するスリ
ーブとでサーボシリンダを制御するサーボ弁を含
む可変容量形ポンプの馬力制御装置において、サ
ーボ弁のスプールの一端に馬力設定ばねに対抗す
る受圧面積を違えた複数のパイロツトピストンを
設け、これらのパイロツトピストンと可変容量形
ポンプとの間に吐出圧力をパイロツトピストンに
選択的に導くための切換弁を介装したことを特徴
とする可変容量形ポンプの馬力制御装置。 It consists of a servo cylinder that controls the pump tilting angle of a variable displacement pump, a spool that conducts the pump discharge pressure at one end and a horsepower setting spring at the other end, and a sleeve that is inserted into the spool and interlocks with the servo cylinder. In a horsepower control device for a variable displacement pump that includes a servo valve that controls a servo cylinder, a plurality of pilot pistons with different pressure receiving areas opposing a horsepower setting spring are provided at one end of the spool of the servo valve, and A horsepower control device for a variable displacement pump, characterized in that a switching valve for selectively guiding discharge pressure to a pilot piston is interposed between the displacement pump and the displacement pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15595587U JPH0161475U (en) | 1987-10-12 | 1987-10-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15595587U JPH0161475U (en) | 1987-10-12 | 1987-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0161475U true JPH0161475U (en) | 1989-04-19 |
Family
ID=31434052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15595587U Pending JPH0161475U (en) | 1987-10-12 | 1987-10-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0161475U (en) |
-
1987
- 1987-10-12 JP JP15595587U patent/JPH0161475U/ja active Pending
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