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US 2022/0333586 A1Published application
Tilt linkage for variable stroke pump
AssigneeCw Holdings Ltd
InventorsJianki Wang, Zhe Huangpu, Milton Anderson, Xiaonan Zhai, Leslie Wise
Life of this patent
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Abstract
A variable stroke high pressure pump is disclosed. The pump uses a wobble plate design with dynamically variable tilt to provide continuous adjustment of pump stroke length and output. Dynamically variable tilt is accomplished using a linearly actuated tilt thruster rotationally coupled to the drive shaft to maintain a selected tilt of the wobble plate through the rotation of the wobble plate.
Claims20
A variable stroke pump, comprising:
- a drive shaft coupled to a drive;
- a wobble plate rotationally coupled to the drive shaft;
- a plurality of displacement rods coupled to the wobble plate;
- and
- a tilt actuator assembly rotationally coupled to the drive shaft, the tilt actuator assembly comprising:
- a slider disposed around the drive shaft and rotationally coupled to the drive shaft;
- a linear actuator disposed within the drive shaft and coupled to the slider by a pin disposed in a cross-bore of the drive shaft;
- and
- a thruster assembly coupling the slider to the wobble plate with a yaw limit assembly for controlling yaw movement of the wobble plate.
6 more elements
A variable stroke pump, comprising:
- a drive shaft;
- a wobble plate rotationally coupled to the drive shaft;
- a plurality of displacement rods coupled to a first surface of the wobble plate and extending through a bearing plate;
- and
- a tilt actuator assembly rotationally coupled to the drive shaft, the tilt actuator assembly comprising:
- a slider disposed around the drive shaft and rotationally coupled to the drive shaft;
- a linear actuator disposed within the drive shaft and coupled to the slider by a pin disposed in a cross-bore of the drive shaft;
- and
- a thruster assembly comprising a thrust block coupled to a second surface of the wobble plate, opposite from the first surface, and a thrust rod coupled to the slider and rotationally captured within the thrust block.
6 more elements
A variable stroke pump, comprising:
- a drive shaft;
- a wobble plate rotationally coupled to the drive shaft;
- a plurality of displacement rods coupled to the wobble plate and extending through a bearing plate, each displacement rod comprising a first section and a second section coupled together by an attachment plate;
- and
- a tilt actuator assembly rotationally coupled to the drive shaft, the tilt actuator assembly comprising:
- a slider disposed around the drive shaft and rotationally coupled to the drive shaft;
- a linear actuator disposed within the drive shaft and coupled to the slider by a pin disposed in a cross-bore of the drive shaft;
- and
- a thruster assembly comprising a thrust block coupled to the wobble plate and a thrust rod coupled to the slider and rotationally captured within the thrust block.
6 more elements
Dependencies are inferred from the claim text.