JPH0218661U - - Google Patents
Info
- Publication number
- JPH0218661U JPH0218661U JP9556088U JP9556088U JPH0218661U JP H0218661 U JPH0218661 U JP H0218661U JP 9556088 U JP9556088 U JP 9556088U JP 9556088 U JP9556088 U JP 9556088U JP H0218661 U JPH0218661 U JP H0218661U
- Authority
- JP
- Japan
- Prior art keywords
- swash plate
- line
- piston
- servo cylinder
- 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
- 238000006073 displacement reaction Methods 0.000 claims 2
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Reciprocating Pumps (AREA)
Description
第１図は本考案にかかる斜板式ポンプの容量制
御装置を示す配管図、第２図は同容量制御装置を
簡略的に示す模式図、第３図は他の実施例を示す
配管図、第４図は従来例を示す配管図である。
１……斜板、３……バイアスピストン、４……
制御ピストン、５……サーボシリンダ、５１……
第１室、５２……第２室、６……電磁比例切換弁
、Ｌ１……圧力ライン、Ｌ２……タンクライン、
Ｌ３……第１制御ライン、Ｌ４……第２制御ライ
ン。
Fig. 1 is a piping diagram showing a capacity control device for a swash plate pump according to the present invention, Fig. 2 is a schematic diagram simply showing the same capacity control device, and Fig. 3 is a piping diagram showing another embodiment. FIG. 4 is a piping diagram showing a conventional example. 1... Swash plate, 3... Bias piston, 4...
Control piston, 5... Servo cylinder, 51...
1st chamber, 52...2nd chamber, 6...electromagnetic proportional switching valve, L1...pressure line, L2...tank line,
L3...first control line, L4...second control line.
Claims (1)
量制御を行うようにした斜板式ポンプの容量制御
装置であつて、前記斜板１の傾斜角を中立方向に
調整する制御ピストン４を備えたサーボシリンダ
５と、圧力ラインＬ１とタンクラインＬ２とに接
続され、これら圧力ラインＬ１及びタンクライン
Ｌ２を、前記サーボシリンダ５における前記ピス
トン４を挟んで第１室５１に連通する第１制御ラ
インＬ３と、第２室５２に連通する第２制御ライ
ンＬ４との一方と他方とに可逆的に、かつ、所望
開度に選択する４ポート電磁比例切換弁６と、前
記斜板１に作用する傾転モーメントを打ち消す付
勢力を与えたモーメントキヤンセル用バイアスピ
ストン３とを備えていることを特徴とする斜板式
ポンプの容量制御装置。 A displacement control device for a swash plate type pump, which is equipped with a swash plate 1 and is configured to perform capacity control by adjusting the inclination angle of the swash plate 1, and includes a control piston 4 that adjusts the inclination angle of the swash plate 1 to a neutral direction. A first control unit connected to the servo cylinder 5 provided with the servo cylinder 5, a pressure line L1 and a tank line L2, and communicating the pressure line L1 and the tank line L2 to the first chamber 51 across the piston 4 in the servo cylinder 5. A 4-port electromagnetic proportional switching valve 6 that reversibly selects one and the other of the line L3 and a second control line L4 communicating with the second chamber 52 to a desired opening degree acts on the swash plate 1. 1. A displacement control device for a swash plate type pump, comprising: a moment canceling bias piston 3 which applies a biasing force to cancel out a tilting moment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9556088U JPH0218661U (en) | 1988-07-19 | 1988-07-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9556088U JPH0218661U (en) | 1988-07-19 | 1988-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0218661U true JPH0218661U (en) | 1990-02-07 |
Family
ID=31320238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9556088U Pending JPH0218661U (en) | 1988-07-19 | 1988-07-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0218661U (en) |
-
1988
- 1988-07-19 JP JP9556088U patent/JPH0218661U/ja active Pending