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US 10,670,003 B1Granted
Tilt linkage for variable stroke pump
AssigneeCw Holdings Ltd
InventorsJianke Wang, Zhe Huangpu, Milton Anderson, Xiaonan Zhai, Leslie Wise
Life of this patent
Estimating the term…
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.
Claims27
A pump, comprising:
- a drive shaft coupled to a drive;
- a wobble plate attached to the drive shaft by a swivel mount;
- a plurality of displacement rods, each having a first end and a second end, with the first end of each displacement rod disposed against a first surface of the wobble plate and the second end of each displacement rod connected with a plunger;
- and
- a tilt actuator assembly disposed around the drive shaft, the tilt actuator assembly comprising a slider having an interior surface with a slot formed therein and a thruster assembly coupled to the slider and extending toward a second surface of the wobble plate opposite the first surface, the tilt actuator assembly further comprising a key extending radially outward from the drive shaft and mated with the slot and a linear actuator slidably disposed against the slider.
2 more elements
A pump, comprising:
- a drive shaft coupled to a drive;
- a wobble plate attached to the drive shaft by a ball-shaped swivel mount with a wobble plate key extending radially inward from the wobble plate to the swivel mount;
- a plurality of displacement rods, each having a first end and a second end, with the first end of each displacement rod disposed against a first surface of the wobble plate and the second end of each displacement rod connected with a plunger;
- a tilt pad bearing between each displacement rod and the wobble plate;
- a tilt actuator assembly disposed around the drive shaft, the tilt actuator assembly comprising a slider with a slot formed therein and a thruster assembly coupled to the slider and extending toward a second surface of the wobble plate opposite the first surface;
- and
- a key extending radially outward from the drive shaft and mated with the slot.
4 more elements
A pump, comprising:
- a drive shaft coupled to a drive;
- a wobble plate attached to the drive shaft by a swivel mount with a wobble plate key extending radially inward from the wobble plate to the swivel mount;
- a plurality of displacement rods, each having a first end and a second end, with the first end of each displacement rod disposed against a first surface of the wobble plate and the second end of each displacement rod connected with a plunger;
- a tilt pad bearing between each displacement rod and the wobble plate;
- a tilt actuator assembly disposed around the drive shaft, the tilt actuator assembly comprising a slider with an interior surface that has a slot formed therein and a thruster assembly coupled to an exterior surface of the slider and extending toward a second surface of the wobble plate opposite the first surface, the slider attached to the drive shaft by a guide ring;
- a key extending radially outward from the drive shaft and the guide ring, and mated with the slot;
- and
- a linear actuator slidably disposed within the drive shaft and coupled to the slider and to a hydraulic member located at a fluid end of the pump.
5 more elements
Dependencies are inferred from the claim text.