JPH0160003U - - Google Patents
Info
- Publication number
- JPH0160003U JPH0160003U JP15539287U JP15539287U JPH0160003U JP H0160003 U JPH0160003 U JP H0160003U JP 15539287 U JP15539287 U JP 15539287U JP 15539287 U JP15539287 U JP 15539287U JP H0160003 U JPH0160003 U JP H0160003U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- hydraulic motor
- capacity control
- capacity
- self
- 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 9
- 238000010586 diagram Methods 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 1
Description
第１図は本考案の第１の実施例を示す油圧回路
図、第２図は同じく第２の実施例を示す油圧回路
図、第３図は従来技術を示す油圧回路図、第４図
は他の従来技術を示す油圧回路図である。
１……油圧モータ、１Ａ……容量可変部、３…
…高圧選択弁、４……アクチユエータ、３１……
容量制御弁、３５……選択切換弁、４１……パイ
ロツト圧切換弁。
Fig. 1 is a hydraulic circuit diagram showing the first embodiment of the present invention, Fig. 2 is a hydraulic circuit diagram also showing the second embodiment, Fig. 3 is a hydraulic circuit diagram showing the prior art, and Fig. 4 is a hydraulic circuit diagram showing the second embodiment. FIG. 3 is a hydraulic circuit diagram showing another conventional technique. 1...Hydraulic motor, 1A...Variable capacity section, 3...
...High pressure selection valve, 4... Actuator, 31...
Capacity control valve, 35... selection switching valve, 41... pilot pressure switching valve.
Claims (1)
タと、該油圧モータの容量可変部を駆動する容量
可変アクチユエータとを備えた油圧モータの容量
制御装置において、前記油圧モータに供給するモ
ータ自己圧の大きさに応じて前記容量可変アクチ
ユエータを作動する自己圧制御とモータ自己圧の
大きさに拘らず前記容量可変アクチユエータを大
容量または小容量一定に保つ固定容量制御とに制
御可能な油圧パイロツト式の容量制御弁と、該容
量制御弁に給排するパイロツト圧を直接的または
間接的に切換えることにより、該容量制御弁を自
己圧制御または固定容量制御のいずれか一方に選
択的に切換える選択切換弁とから構成したことを
特徴とする油圧モータの容量制御装置。 (2) 前記選択切換弁を切換えることにより、固
定容量制御時には前記容量制御弁に外部油圧源か
らのパイロツト圧を直接供給するように構成して
なる実用新案登録請求の範囲(1)項記載の油圧モ
ータの容量制御装置。 (3) 前記選択切換弁を切換えることにより、パ
イロツト切換弁を作動し、固定容量制御時には該
パイロツト圧切換弁を介して前記容量制御弁にモ
ータ自己圧をパイロツト圧として間接的に供給す
るように構成してなる実用新案登録請求の範囲(1
)項記載の油圧モータの容量制御装置。[Claims for Utility Model Registration] (1) A displacement control device for a hydraulic motor comprising a variable displacement hydraulic motor having a variable displacement section and a variable displacement actuator for driving the variable displacement section of the hydraulic motor, self-pressure control that operates the variable capacity actuator according to the magnitude of motor self-pressure supplied to the hydraulic motor; and fixed-capacity control that maintains the variable displacement actuator at a constant large or small capacity regardless of the magnitude of motor self-pressure. By directly or indirectly switching the pilot pressure supplied and discharged to and from the hydraulic pilot type capacity control valve, the capacity control valve can be controlled to either self-pressure control or fixed capacity control. A displacement control device for a hydraulic motor, comprising a selection switching valve that selectively switches to one side. (2) The utility model according to claim (1), wherein pilot pressure from an external hydraulic source is directly supplied to the capacity control valve during fixed capacity control by switching the selection switching valve. Hydraulic motor capacity control device. (3) By switching the selection switching valve, a pilot switching valve is operated, and during fixed displacement control, motor self-pressure is indirectly supplied as pilot pressure to the capacity control valve via the pilot pressure switching valve. Scope of claim for utility model registration consisting of (1)
) A displacement control device for a hydraulic motor as described in item ).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15539287U JPH0160003U (en) | 1987-10-09 | 1987-10-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15539287U JPH0160003U (en) | 1987-10-09 | 1987-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0160003U true JPH0160003U (en) | 1989-04-17 |
Family
ID=31432983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15539287U Pending JPH0160003U (en) | 1987-10-09 | 1987-10-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0160003U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01203701A (en) * | 1988-02-05 | 1989-08-16 | Kawasaki Heavy Ind Ltd | Speed changeover device of hydraulic motor for vehicle running |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59175605A (en) * | 1983-03-22 | 1984-10-04 | Kayaba Ind Co Ltd | Control device for variable hydraulic actuator |
| JPS62132002A (en) * | 1985-12-04 | 1987-06-15 | Hitachi Constr Mach Co Ltd | Hydraulic driving device |
-
1987
- 1987-10-09 JP JP15539287U patent/JPH0160003U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59175605A (en) * | 1983-03-22 | 1984-10-04 | Kayaba Ind Co Ltd | Control device for variable hydraulic actuator |
| JPS62132002A (en) * | 1985-12-04 | 1987-06-15 | Hitachi Constr Mach Co Ltd | Hydraulic driving device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01203701A (en) * | 1988-02-05 | 1989-08-16 | Kawasaki Heavy Ind Ltd | Speed changeover device of hydraulic motor for vehicle running |
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