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US 9,021,799 B1Granted
Hydraulic motor assembly
AssigneeHydro-Gear Limited Partnership
InventorsMichael W. Taylor, Heath F. McCormick, Thomas J. Langenfeld, Nathan W. Bonny
Life of this patent
Estimating the term…
Abstract
A hydraulic motor assembly capable of precise control having a housing, a hydraulic mounting surface located in the housing, a cylinder block rotatably disposed on the hydraulic mounting surface, a motor shaft engaged to the cylinder block and supported proximate to a first end, a plurality of cooperating gears located in the housing and rotationally engaged to a second end of the motor shaft, an output shaft rotationally engaged to the plurality of cooperating gears, a speed sensor located proximate to one of the plurality of cooperating gears, wherein the speed sensor transmits a signal indicative of the rotational speed of the one of the plurality of cooperating gears.
Claims24
A hydraulic motor assembly comprising:
- a housing comprising a main housing having a first surface and an opposing second surface, a motor housing engaged to the first surface of the main housing to form a motor chamber, and a gear housing engaged to the opposing second surface of the main housing to form a gear chamber, wherein the housing further comprises a running surface and a pair of passages, wherein a first of the pair of passages connects a first port on the running surface to an inlet port on the exterior of the housing, and a second of the pair of passages connects a second port on the running surface to a discharge port on the exterior of the housing;
- a cylinder block located in the motor chamber and rotatably disposed on the running surface;
- a motor shaft axially engaged to the cylinder block to rotate therewith, wherein the motor shaft extends from the motor chamber to the gear chamber;
- a gear set disposed in the gear chamber and rotatably engaged to the motor shaft;
- a tubular output shaft rotatably engaged to the gear set;
- and
- a speed sensor located in part adjacent to the gear set to measure the rotational speed of one of the gears of the gear set.
4 more elements
A hydraulic motor assembly including a hydraulic motor having a cylinder block and an electronic controller to meter the flow of hydraulic fluid from a pump in fluid communication with the hydraulic motor based at least in part on sensor feedback from the hydraulic motor, the hydraulic motor assembly comprising:
- a housing comprising a main housing, a motor housing engaged to the main housing to form a motor chamber, and a gear housing engaged to the main housing to form a gear chamber;
- a hydraulic mounting surface located in the housing, wherein the cylinder block is rotatably disposed on the hydraulic mounting surface;
- a motor shaft axially engaged to the cylinder block and supported by the hydraulic mounting surface proximate to a first end of the motor shaft, the motor shaft extending from the motor chamber through the main housing and to the gear chamber;
- a plurality of cooperating gears located in the housing and rotationally engaged to a second end of the motor shaft;
- an output shaft rotationally engaged to the plurality of cooperating gears;
- and
- a speed sensor located proximate to one of the plurality of cooperating gears, wherein the speed sensor transmits a signal to the electronic controller indicative of the rotational speed of the one of the plurality of cooperating gears.
4 more elements
A hydraulic motor assembly comprising:
- a housing having a motor chamber and a gear chamber;
- a running surface disposed in the motor chamber and comprising a first port and a second port;
- a hydraulic circuit in communication with the running surface and comprising a first passage connecting the first port on the running surface to an inlet port on the exterior of the housing, and a second passage connecting the second port on the running surface to a discharge port on the exterior of the housing;
- a cylinder block located in the motor chamber and rotatably disposed on the running surface and in fluid communication with the hydraulic circuit through the first port and the second port;
- a motor shaft axially engaged to the cylinder block to rotate therewith, wherein the motor shaft extends from the motor chamber to the gear chamber;
- a gear set disposed in the gear chamber and rotatably engaged to the motor shaft;
- an output shaft rotatably engaged to the gear set;
- a check valve located in the discharge port;
- and
- an internal case drain in fluid communication with the discharge port that enables fluid to flow from the motor chamber to the discharge port.
7 more elements
A hydraulic motor assembly comprising:
- a housing having a motor chamber, a gear chamber, a running surface, and a pair of passages, wherein a first of the pair of passages connects a first port on the running surface to an inlet port on the exterior of the housing and a second of the pair of passages connects a second port on the running surface to a discharge port on the exterior of the housing, wherein the running surface includes an internal case drain formed therein placing the motor chamber in fluid communication with the discharge port, wherein the internal case drain includes an annular groove formed in the running surface and a slot formed in the running surface, wherein the annular groove surrounds the first port and the second port and the slot places the annular groove in fluid communication with the second port;
- a cylinder block located in the motor chamber and rotatably disposed on the running surface;
- a motor shaft axially engaged to the cylinder block to rotate therewith, wherein the motor shaft extends from the motor chamber to the gear chamber;
- a gear set disposed in the gear chamber and rotatably engaged to the motor shaft;
- a tubular output shaft rotatably engaged to the gear set;
- and
- a speed sensor located in part adjacent to the gear set to measure the rotational speed of one of the gears of the gear set.
4 more elements
A hydraulic motor assembly comprising:
- a housing having a motor chamber, a gear chamber, a running surface, and a pair of passages, wherein a first of the pair of passages connects a first port on the running surface to an inlet port on the exterior of the housing and a second of the pair of passages connects a second port on the running surface to a discharge port on the exterior of the housing, the discharge port having an inside diameter greater than an inside diameter of the inlet port;
- a cylinder block located in the motor chamber and rotatably disposed on the running surface;
- a motor shaft axially engaged to the cylinder block to rotate therewith, wherein the motor shaft extends from the motor chamber to the gear chamber;
- a gear set disposed in the gear chamber and rotatably engaged to the motor shaft;
- a tubular output shaft rotatably engaged to the gear set;
- and
- a speed sensor located in part adjacent to the gear set to measure the rotational speed of one of the gears of the gear set.
4 more elements
Dependencies are inferred from the claim text.