JPS5471261A - Controlling device in oil pressure driving device - Google Patents
Controlling device in oil pressure driving deviceInfo
- Publication number
- JPS5471261A JPS5471261A JP13787377A JP13787377A JPS5471261A JP S5471261 A JPS5471261 A JP S5471261A JP 13787377 A JP13787377 A JP 13787377A JP 13787377 A JP13787377 A JP 13787377A JP S5471261 A JPS5471261 A JP S5471261A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- reduced
- port
- valve
- rotational number
- 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
Landscapes
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
- Control Of Fluid Gearings (AREA)
Abstract
PURPOSE: To provide the subject controlling device wherein the supply pressure of a forward-and-rearward movement and speed control valve is controlled by a valve operating in relation to the rotational number of an engine, thereby to maintain the rotational number of the engine at a constant value.
CONSTITUTION: The port 18a of a POC valve 18 of a control circuit A is connected to the exhaust side of a controlling pump 15 through a variable throttle 19 acting in linkage with a throttle lever 24, and the port 18b thereof is communicated with a tank 56. The change-over port 16b of a relief valve 16 and the port 16a thereof are connected to the forward and rear parts of a variable throttle 19 at the exhaust side of a control pump 15. Since the relief pressure becomes the supply pressure of the forward-and-rearward movement and speed control valve, a load becomes great and the rotational number of the engine is reduced. When the relief pressure decreased, the output pressure of the speed control valve is reduced. Accordingly, the angle of an inclined plate becomes small, and the load of the engine is reduced is reduced and the rotational number is returned to the original number.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13787377A JPS5471261A (en) | 1977-11-18 | 1977-11-18 | Controlling device in oil pressure driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13787377A JPS5471261A (en) | 1977-11-18 | 1977-11-18 | Controlling device in oil pressure driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5471261A true JPS5471261A (en) | 1979-06-07 |
Family
ID=15208692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13787377A Pending JPS5471261A (en) | 1977-11-18 | 1977-11-18 | Controlling device in oil pressure driving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5471261A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4376371A (en) * | 1979-10-09 | 1983-03-15 | Kabushiki Kaisha Komatsu Seisakusho | Hydraulic circuit for a hydraulically driven vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS509496U (en) * | 1973-05-29 | 1975-01-30 | ||
| JPS50124055A (en) * | 1974-02-13 | 1975-09-29 | ||
| DE2603563A1 (en) * | 1976-01-30 | 1977-08-04 | Linde Ag | CONTROL DEVICE FOR AN UNIT CONTAINING AT LEAST TWO PUMPS |
-
1977
- 1977-11-18 JP JP13787377A patent/JPS5471261A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS509496U (en) * | 1973-05-29 | 1975-01-30 | ||
| JPS50124055A (en) * | 1974-02-13 | 1975-09-29 | ||
| DE2603563A1 (en) * | 1976-01-30 | 1977-08-04 | Linde Ag | CONTROL DEVICE FOR AN UNIT CONTAINING AT LEAST TWO PUMPS |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4376371A (en) * | 1979-10-09 | 1983-03-15 | Kabushiki Kaisha Komatsu Seisakusho | Hydraulic circuit for a hydraulically driven vehicle |
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