Adjustable hydraulic motor apparatus
AssigneeHydro-Gear Limited Partnership
InventorsMichael L. Bennett, Matthew C. Roney, Scott E. Windhorst, Thomas J. Langenfeld, Raymond Hauser
Life of this patent
Estimating the term…
Abstract
A hydraulic motor assembly having a hydraulic motor mounted in a motor housing and an axle mounted in a separate axle housing. A ring gear and a port block are mounted between the motor housing and the axle housing. A swash plate is mounted in the motor housing and is engaged to the hydraulic motor to control the hydraulic output thereof, and the swash plate is movable between at least a first position and a second position.
Claims24
A hydraulic motor assembly, comprising:
- a hydraulic motor mounted in a motor housing;
- a swash plate mounted in the motor housing and engaged to the hydraulic motor to control the hydraulic output thereof, the swash plate being movable between at least a first position and a second position;
- an axle drivingly engaged to the hydraulic motor and located in an axle housing;
- and
- a ring gear and a port block mounted between the motor housing and the axle housing, so that the external surface of the ring gear forms a part of the external housing of the assembly.
A hydraulic motor assembly, comprising:
- a motor housing comprising a port block and an external casing secured to the port block to form a sump;
- a hydraulic motor comprising a cylinder block located in the sump, a plurality of pistons in the cylinder block and a motor shaft engaged to and driven by the cylinder block;
- a swash plate located in the sump and engaged to the pistons, wherein the swash plate is movable between a first position and a second position to change the output of the hydraulic motor;
- a ring gear assembly comprising a ring gear and a plurality of planet gears engaged to the motor shaft and the ring gear;
- and
- a single axle mounted in an axle housing and driven by the ring gear assembly.
A hydraulic motor assembly, comprising:
- an external housing;
- a hydraulic motor rotatably mounted on a port block and having a cylinder block located in the external housing, a plurality of axial pistons located in the cylinder block and a motor shaft engaged to and driven by the cylinder block;
- a swash plate located in the external housing and engaged to the axial pistons;
- a control member engaged to the swash plate to change the angle of the swash plate with respect to the axis of the motor shaft, wherein a portion of the control member extends out of the external housing;
- a gear assembly located in the external housing and comprising a plurality of gears engaged to the motor shaft;
- and
- a single axle mounted in and extending from the external housing and driven by the gear assembly, wherein the axle and motor shaft are collinear.
A hydraulic motor assembly, comprising:
- a motor housing comprising a port block and an external casing secured to the port block to form a sump;
- a hydraulic motor comprising a cylinder block located in the sump, a plurality of pistons in the cylinder block and a motor shaft engaged to and driven by the cylinder block;
- a swash plate located in the sump and engaged to the pistons, wherein the swash plate is movable between a first position and a second position to change the output of the hydraulic motor;
- a ring gear assembly comprising a plurality of gears engaged to the motor shaft;
- an axle mounted in an axle housing and driven by the ring gear assembly;
- an actuator mounted in the motor housing to move the swash plate between positions;
- and
- a first stop formed on the actuator, wherein the first stop engages an interior surface of the motor housing at a first location to limit the range of motion of the actuator in a first direction.
Dependencies are inferred from the claim text.