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US 2021/0332809 A1Published application
Tilt linkage for variable stroke pump
AssigneeCw Holdings Ltd
InventorsJianke 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
An apparatus, 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 crosshead slidably coupled to the drive shaft using a key and coupled to a linear actuator disposed within the drive shaft;
- and
- a thruster assembly coupled to the slider, extending to the wobble plate, and coupled to the wobble plate by a rotational thrust bearing comprising a yaw limit assembly for controlling yaw movement of the wobble plate.
5 more elements
An apparatus, 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;
- and
- a tilt actuator assembly slidably disposed around, and rotationally coupled to, the drive shaft, the tilt actuator assembly comprising:
- a crosshead slidably coupled to the drive shaft using a key that engages with a guide ring fused to the drive shaft, wherein the crosshead is also coupled to a linear actuator disposed within the drive shaft and extending through the bearing plate;
- and
- a thruster assembly coupled to the slider by an axle block, extending to the wobble plate, and coupled to the wobble plate by a rotational thrust bearing attached to the wobble plate at a location spaced radially from a center of the wobble plate.
5 more elements
An apparatus, comprising:
- a drive shaft;
- a wobble plate rotationally coupled to the drive shaft;
- a plurality of displacement rods coupled to the wobble plate;
- and
- a tilt actuator assembly slidably disposed around, and rotationally coupled to, the drive shaft, the tilt actuator assembly comprising:
- a crosshead slidably coupled to the drive shaft by a key and coupled to a linear actuator disposed within the drive shaft;
- and
- a thruster assembly coupled to the drive shaft by an axle block and to the wobble plate by a thrust block comprising a yaw limit assembly for controlling yaw movement of the wobble plate.
5 more elements
Dependencies are inferred from the claim text.