Hydraulic pump
By introducing an external pressure control design to control the deflection angle of the swashplate in the hydraulic pump, the problem of excessive driving torque in low-temperature environments is solved, and the miniaturization and energy efficiency of the hydraulic pump are improved.
CN115853731BActive Publication Date: 2026-07-21COMMETESCO GMBH
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- COMMETESCO GMBH
- Filing Date
- 2019-04-29
- Publication Date
- 2026-07-21
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Figure CN115853731B_ABST
Abstract
Provided is a hydraulic pump capable of reducing the starting torque of a drive source. The hydraulic pump (10) includes: a cylinder block (30) having a plurality of cylinder bores (32) and configured to be rotatable; a piston (38) movably held in each cylinder bore (32); a swash plate (40) that controls the amount of movement of the piston (38) in accordance with the magnitude of a deflection angle; a first urging member (50) for urging the swash plate (40) in a direction in which the deflection angle of the swash plate (40) decreases; and a second urging member (60) for urging the swash plate (40) in a direction in which the deflection angle of the swash plate (40) increases under the action of a pressure supplied from the outside.
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