JPS5797089A - Controller for variable volumetric hydraulic pump - Google Patents
Controller for variable volumetric hydraulic pumpInfo
- Publication number
- JPS5797089A JPS5797089A JP55170887A JP17088780A JPS5797089A JP S5797089 A JPS5797089 A JP S5797089A JP 55170887 A JP55170887 A JP 55170887A JP 17088780 A JP17088780 A JP 17088780A JP S5797089 A JPS5797089 A JP S5797089A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic pump
- controlled
- prime mover
- variable volumetric
- discharge pressure
- 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.)
- Granted
Links
Abstract
PURPOSE: To enable controlling thrust capacity of a variable volumetric hydraulic pump which is simple in the structure and made into small compaction in such a way that a spring is provided at one end of a control member together with the working of discharge pressure to be produced by another hydraulic pump through its own discharge pressure and a pressure reducing valve.
CONSTITUTION: When discharge pressure Pda of 3a grows more than the established pressure Po out of variable volumetric hydraulic pumps 3a, 3b which are driven by one prime mover 1, since a piston 16a moves to the left against a spring 17a, angle of rake for the hydraulic pump 3a is decreased, discharge rate Q is reduced, input torque T of the hydraulic pump 3a is controlled in such a way that is may be the value To in 1/2 of the maximum output torque of the prime mover 1. Further, when input torque of the partner hydraulic pump 3b stands at less than To, the input torque of the hydraulic pump 3a can be increased until the total value of the input torques of the both pumps 3a, 3b becomes To. Thus, thrust capacity of the hydraulic pump can be controlled by means of a simple and small compaction of device is controlled, and effective utilization of the output torque of the prime mover 1.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55170887A JPS5797089A (en) | 1980-12-05 | 1980-12-05 | Controller for variable volumetric hydraulic pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55170887A JPS5797089A (en) | 1980-12-05 | 1980-12-05 | Controller for variable volumetric hydraulic pump |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5797089A true JPS5797089A (en) | 1982-06-16 |
JPH0125906B2 JPH0125906B2 (en) | 1989-05-19 |
Family
ID=15913153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55170887A Granted JPS5797089A (en) | 1980-12-05 | 1980-12-05 | Controller for variable volumetric hydraulic pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5797089A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4498847A (en) * | 1982-06-29 | 1985-02-12 | Kabushiki Kaisha Komatsu Seisakusho | Control system for variable displacement hydraulic pumps |
JPS60198387A (en) * | 1984-03-21 | 1985-10-07 | Hitachi Constr Mach Co Ltd | Inlet control device for hydraulic pump |
US8777341B2 (en) | 2009-04-16 | 2014-07-15 | Electrolux Do Brasil S.A. | Sliding shelves for refrigerators and freezers |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5416701A (en) * | 1977-07-07 | 1979-02-07 | Kobe Steel Ltd | Control circuit of variable capacity hydraulic pump for hydraulic shovel |
-
1980
- 1980-12-05 JP JP55170887A patent/JPS5797089A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5416701A (en) * | 1977-07-07 | 1979-02-07 | Kobe Steel Ltd | Control circuit of variable capacity hydraulic pump for hydraulic shovel |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4498847A (en) * | 1982-06-29 | 1985-02-12 | Kabushiki Kaisha Komatsu Seisakusho | Control system for variable displacement hydraulic pumps |
JPS60198387A (en) * | 1984-03-21 | 1985-10-07 | Hitachi Constr Mach Co Ltd | Inlet control device for hydraulic pump |
JPH0451671B2 (en) * | 1984-03-21 | 1992-08-19 | Hitachi Construction Machinery | |
US8777341B2 (en) | 2009-04-16 | 2014-07-15 | Electrolux Do Brasil S.A. | Sliding shelves for refrigerators and freezers |
Also Published As
Publication number | Publication date |
---|---|
JPH0125906B2 (en) | 1989-05-19 |
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