JPH032901U - - Google Patents
Info
- Publication number
- JPH032901U JPH032901U JP6417089U JP6417089U JPH032901U JP H032901 U JPH032901 U JP H032901U JP 6417089 U JP6417089 U JP 6417089U JP 6417089 U JP6417089 U JP 6417089U JP H032901 U JPH032901 U JP H032901U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic motor
- tank
- drives
- continuously variable
- variable speed
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案の実施例を示す油圧モータの容
量制御回路図、第２図は従来例を示す油圧モータ
の容量制御回路図である。
１…油圧モータ、２…無段変速制御バルブ、３
…モード切換弁、４…オリフイスバイパス弁、５
…小径ピストン、６…大径ピストン、８…バイパ
スポート、９…油圧ポンプ、１０…タンク、１８
…オリフイス。
FIG. 1 is a hydraulic motor capacity control circuit diagram showing an embodiment of the present invention, and FIG. 2 is a hydraulic motor capacity control circuit diagram showing a conventional example. 1... Hydraulic motor, 2... Continuously variable speed control valve, 3
...Mode switching valve, 4...Orifice bypass valve, 5
...Small diameter piston, 6...Large diameter piston, 8...Bypass port, 9...Hydraulic pump, 10...Tank, 18
...orifice chair.
Claims (1)
る油室と小容量側へ駆動する油室とを、油圧モー
タを駆動する油圧ポンプの吐出圧に応動する無段
変速制御バルブを介して選択的に油圧ポンプとタ
ンクとに接続するとともに、このタンクとの接続
部にオリフイスを介装した油圧モータの容量制御
回路において、無段変速制御バルブを強制的に大
容量側へ切り換える手段を備えるとともに、前記
オリフイスをバイパスするバイパスポートを無段
変速制御バルブに設け、このバイパスポートとタ
ンクとをポンプ吐出圧の低圧時に開く遮断弁を介
して接続したことを特徴とする油圧モータの容量
制御回路。 The oil chamber that drives the capacity change means of the hydraulic motor toward the large capacity side and the oil chamber that drives it toward the small capacity side are selectively controlled via a continuously variable speed control valve that responds to the discharge pressure of the hydraulic pump that drives the hydraulic motor. In the capacity control circuit of the hydraulic motor, which is connected to a hydraulic pump and a tank, and an orifice is interposed in the connection with the tank, a means is provided for forcibly switching a continuously variable speed control valve to a large capacity side, A capacity control circuit for a hydraulic motor, characterized in that a bypass port for bypassing the orifice is provided in a continuously variable speed control valve, and the bypass port and a tank are connected via a shutoff valve that opens when the pump discharge pressure is low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6417089U JPH032901U (en) | 1989-06-01 | 1989-06-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6417089U JPH032901U (en) | 1989-06-01 | 1989-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH032901U true JPH032901U (en) | 1991-01-11 |
Family
ID=31594868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6417089U Pending JPH032901U (en) | 1989-06-01 | 1989-06-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH032901U (en) |
-
1989
- 1989-06-01 JP JP6417089U patent/JPH032901U/ja active Pending