Hydraulic pump or motor with mounting configuration for increased torque

Patent metadata

Field	Value
Publication number	US-12209598-B2
Application number	US-202418587050-A
Country	US
Kind code	B2
Filing date	Feb 26, 2024
Priority date	Feb 9, 2021
Publication date	Jan 28, 2025
Grant date	Jan 28, 2025

Abstract

A hydraulic pump or motor includes a mounting flange that is disposed at the first end of the housing. The mounting flange defines a pair of bolt receiving slots that are disposed along the X-axis on either side of the shaft. The pair of bolt receiving slots each define a radius center that are spaced away from each other a X dimension, and a pilot projection extends longitudinally away from the mounting flange, defining a pilot projection diameter. A ratio of the X dimension to the pilot projection diameter ranges from 1.1 to 1.5.

First claim

What is claimed is:

1. A hydraulic pump or motor with a mounting configuration for transferring torque, comprising: a shaft defining a longitudinal axis, a Y-axis extending upwardly and orthogonally from the longitudinal axis, and an X-axis extending orthogonally to the longitudinal axis, and the Y-axis; a housing defining a first longitudinal end, a second longitudinal end, and a cavity that extends from the first longitudinal end to the second longitudinal end; a plurality of mechanical components including one hydraulic interacting component that are disposed in the cavity; wherein a mounting flange is disposed at the first longitudinal end of the housing, the shaft extends from the cavity past the first longitudinal end of the housing and through the mounting flange, the mounting flange defining a pair of bolt receiving slots that are disposed along the X-axis on either side of the shaft, the pair of bolt receiving slots each define a radius center that are spaced away from each other a X dimension, the mounting flange further defines a pilot projection configured for aligning the pump or motor with a recess in an adjoining device and sealing a joint between the pump or motor and the adjoining device against passage of fluid, the pilot projection extending longitudinally away from the mounting flange, defining a pilot projection diameter, and a ratio of the X dimension to the pilot projection diameter ranges from 1.1 to 1.5.

2. The hydraulic pump or motor with a mounting configuration for transferring torque of claim 1 , wherein each of the pair of bolt receiving slots defines a Y dimension, and a ratio of the X dimension to the Y dimension ranges from 9.6 to 9.8.

3. The hydraulic pump or motor with a mounting configuration for transferring torque of claim 2 , wherein the X dimension ranges from 148.0 mm to 152.0 mm, the Y dimension ranges from 15.0 mm to 16.0 mm, and the pilot projection diameter ranges from 112.0 mm to 115.0 mm.

4. The hydraulic pump or motor with a mounting configuration for transferring torque of claim 3 , wherein the shaft receives or delivers more than 500 n/m of torque.

5. The hydraulic pump or motor with a mounting configuration for transferring torque of claim 1 , wherein the plurality of mechanical components including one hydraulic interacting component that are disposed in the housing includes at least one of the following: a vane, a piston, and a swash plate.

6. A hydraulic pump or motor with a mounting configuration for transferring torque, comprising: a shaft defining a longitudinal axis, a Y-axis extending upwardly and orthogonally from the longitudinal axis, and an X-axis extending orthogonally to the longitudinal axis, and the Y-axis; a housing defining a first longitudinal end, a second longitudinal end, and a cavity that extends from the first longitudinal end to the second longitudinal end; a plurality of mechanical components including one hydraulic interacting components that are disposed in the cavity; wherein a mounting flange is disposed at the first longitudinal end of the housing, the shaft extends from the cavity past the first longitudinal end of the housing and through the mounting flange, the mounting flange defining a pair of bolt receiving slots that are disposed along the X-axis on either side of the shaft, the pair of bolt receiving slots each define a radius center that are spaced away from each other a X dimension, and a Y-dimension that defines a width of the slot, and a ratio of the X-dimension to the Y-dimension ranges from 9.5 to 9.8, the mounting flange further defines a pilot projection configured for aligning the pump or motor with a recess in an adjoining device and sealing a joint between the pump or motor and the adjoining device against passage of fluid.

7. The hydraulic pump or motor with a mounting configuration for transferring torque of claim 6 , the pilot projection defining a pilot projection diameter, and a ratio of the pilot projection diameter to the Y-dimension ranges from 7.3 to 7.5.

8. The hydraulic pump or motor with a mounting configuration for transferring torque of claim 7 , wherein the X dimension ranges from 148.0 mm to 152.0 mm, the Y dimension ranges from 15.0 mm to 16.0 mm, and the pilot projection diameter ranges from 112.0 mm to 115.0 mm.

9. The hydraulic pump or motor with a mounting configuration for transferring torque of claim 8 , wherein the shaft receives or delivers more than 500 n/m of torque.

10. The hydraulic pump or motor with a mounting configuration for transferring torque of claim 6 , wherein the plurality of mechanical components including one hydraulic interacting component that are disposed in the housing includes at least one of the following: a vane, a piston, and a swash plate.

11. A hydraulic fan pump assembly comprising: a shaft defining a longitudinal axis, a Y-axis extending upwardly and orthogonally from the longitudinal axis, and an X-axis extending orthogonally to the longitudinal axis, and the Y-axis; a housing defining a first longitudinal end, a second longitudinal end, and a cavity that extends from the first longitudinal end to the second longitudinal end; a plurality of mechanical components including at least one hydraulic driven component that are disposed in the cavity; wherein a mounting flange is disposed at the first longitudinal end of the housing, the shaft extends from the cavity past the first longitudinal end of the housing and through the mounting flange, the mounting flange defining a pair of bolt receiving slots that are disposed along the X-axis on either side of the shaft, the pair of bolt receiving slots each define a radius center that are spaced away from each other a X dimension, the mounting flange further defines a pilot projection configured for aligning the pump or motor with a recess in an adjoining device and sealing a joint between the pump or motor and the adjoining device against passage of fluid, the pilot projection extending longitudinally away from the mounting flange, defining a pilot projection diameter, and a ratio of the X dimension to the pilot projection diameter ranges from 1.1 to 1.5.

12. The hydraulic fan pump assembly of claim 11 , wherein each of the pair of bolt receiving slots defines a Y dimension, and a ratio of the X dimension to the Y-dimension ranges from 9.5 to 9.8.

13. The hydraulic fan pump assembly of claim 12 , wherein the X dimension ranges from 148.0 mm to 152.0 mm, the Y dimension ranges from 15.0 mm to 16.0 mm, and the pilot projection diameter ranges from 112.0 mm to 115.0 mm.

14. The hydraulic fan pump assembly of claim 13 , wherein the shaft transmits more than 500 n/m of torque.

15. The hydraulic fan pump assembly of claim 11 , wherein the plurality of mechanical components including the at least one hydraulically driven component that are disposed in the housing includes at least one of the following: a vane, a piston, and a swash plate.

16. The hydraulic fan pump assembly of claim 11 , further comprising an O-ring that is configured to fit into a slot of the pilot projection that defines an inner diameter that ranges from 104.0 mm to 108.0 mm.

17. The hydraulic fan pump assembly of claim 11 , wherein, the shaft defines an exposed free end that includes teeth.

18. The hydraulic fan pump assembly of claim 11 , further comprising a pair of M14 bolts that each pass longitudinally through each of the pair bolt receiving slots.

19. The hydraulic fan pump assembly of claim 11 , further comprising a relief valve assembly that is attached to the housing.

20. The hydr

Assignees

• Caterpillar Inc

Inventors

• Speichinger Justin Douglas
• Stive Ramalho
• Hopf Darren Joseph
• Bernard Aurelien Herve
• Rousseau Paul Alan

Classifications

• F04D25/04

  the pump being fluid-driven {(pumps driven by exhaust gases F02B37/00, F02B39/00; turbochargers F02C6/12)} · CPC title

• F04B1/12

  having cylinder axes coaxial with, or parallel or inclined to, main shaft axis · CPC title

• F04C2/34

  having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members · CPC title

• F15B15/08 Primary

  Characterised by the construction of the motor unit · CPC title

• F04B53/16 Primary

  Casings; Cylinders; Cylinder liners or heads; Fluid connections · CPC title