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BR-112023016013-B1 - HYDRAULIC MOTOR OR PUMP ASSEMBLY

BR112023016013B1BR 112023016013 B1BR112023016013 B1BR 112023016013B1BR-112023016013-B1

Abstract

FEMALE MOUNTING MEMBER. This is a female mounting member (300) configured to correspond to a hydraulic pump or fan. The member (300) includes a body that defines a projecting receiving cavity (87, 302) which defines a cavity diameter (D302) and a first threaded hole (304) which defines a first threaded hole diameter (D304). A ratio between the cavity diameter (D302) and the first threaded hole diameter (D304) is in the range of 8.0 to 8.15.

Inventors

  • JUSTIN D. SPEICHINGER
  • Stive RAMALHO
  • DARREN J. HOPF
  • AURELIEN H. BERNARD
  • PAUL A. ROUSSEAU

Assignees

  • CATERPILLAR INC

Dates

Publication Date
20260317
Application Date
20220204
Priority Date
20210209

Claims (9)

  1. 1. Hydraulic motor or pump assembly, characterized in that it comprises: - a housing (210) defining a first longitudinal end (212) and a second longitudinal end (214) and a cavity extending from the first longitudinal end (212) towards the second longitudinal end (214) containing a plurality of mechanical components including a hydraulic pump or fan (46, 48); - a rod (202) defining a longitudinal geometric axis (204), a Y geometric axis (206) extending upwards and orthogonally from the longitudinal geometric axis (204), and an X geometric axis (208) extending orthogonally to the longitudinal geometric axis (204) and the Y geometric axis (206), the rod (202) extending from the cavity beyond the first longitudinal end (212) of the housing (210); - a mounting flange (216) disposed at the first longitudinal end (212), said mounting flange (216) defining a pair of dowel receiving slots (218) which are arranged along the geometric axis X on either side of the rod (202), each pair of dowel receiving slots (218) defining a center radius (220) which are spaced from each other in a dimension X (222); - a pilot projection (224) extending longitudinally in the opposite direction to the mounting flange (216), defining a pilot projection diameter (226), a ratio of dimension X (222) to pilot projection diameter (226) varying from 1.1 to 1.5; wherein the housing (210) is fixed to a female mounting member (300) which is configured to couple to a hydraulic pump or fan (46, 48), wherein the female mounting member (300) comprises: a body defining a projection receiving cavity (87, 302) which defines a cavity diameter (D302), and a first threaded hole (304) which defines a first threaded hole diameter (D304); wherein the ratio between the cavity diameter (D302) and the first threaded hole diameter (D304) is in the range of 8.0 to 8.15.
  2. 2. Hydraulic motor or pump assembly, according to claim 1, characterized in that the cavity diameter (D302) is in the range of 113.0 mm to 115.0 mm.
  3. 3. Hydraulic motor or pump assembly, according to claim 2, characterized in that the first threaded hole diameter (D304) is in the range of 13.0 mm to 15.0 mm.
  4. 4. Hydraulic motor or pump assembly, according to claim 3, characterized in that the cavity (302) extends completely through the body.
  5. 5. Hydraulic motor or pump assembly, according to claim 4, characterized in that the first threaded hole (304) is an M14 tapered hole with a depth of 30.0 mm.
  6. 6. Hydraulic motor or pump assembly, according to claim 1, characterized in that the body defines a second threaded hole (304a) which is spaced at a minimum center-to-center distance (306) and a ratio between the minimum center-to-center distance (306) and the cavity diameter (D302) is in the range of 1.30 to 1.35.
  7. 7. Hydraulic motor or pump assembly, according to claim 6, characterized in that the minimum center-to-center distance (306) is in the range of 140.0 mm to 160.0 mm.
  8. 8. Hydraulic motor or pump assembly, according to claim 7, characterized in that the minimum center-to-center distance (306) is in the range of 148.0 mm to 152.0 mm.
  9. 9. Hydraulic motor or pump assembly, according to claim 6, characterized in that the minimum center-to-center distance (306) is in the range of 145.0 mm to 155.0 mm, and the cavity diameter (D302) is in the range of 113.0 mm to 115.0 mm.

Description

Field of Technique [001] The present disclosure relates to hydraulic pumps or driving machines that are used in motor assemblies and the like. Specifically, the present disclosure relates to a mounting configuration for such pumps or driving machines that allows a pump or driving machine rod to accommodate increased torque. Background [002] Engine assemblies often employ hydraulic pumps or drive machines that supply hydraulic oil at high pressures, or convert hydraulic oil at high pressures or high flow rates to high torque supplied by the rod. Some hydraulic pumps or drive machines are coupled to a fan that moves air through a radiator to cool the coolant that is used to cool the engine. One way to increase the cooling efficiency of the cooling system is to run the fan faster, which requires more torque and typically a larger hydraulic pump and/or drive machine. [003] However, there may be limited space in the engine compartment and/or it may be more expensive to employ a larger drive machine and/or hydraulic pump, which makes the use of such a drive machine and/or pump impractical. In addition, it may be desirable to retrofit engines already in the field with a more robust drive machine without significantly altering the engine design. [004] As can be seen, there is currently a trade-off between improved cooling efficiency for an engine's cooling system and the cost and/or size of the hydraulic drive machine. Summary [005] A hydraulic pump or drive machine is provided with a mounting configuration for coupling to a female mounting member to provide an assembly to accommodate increased torque, according to an embodiment of the present disclosure. The assembly may comprise a rod defining a longitudinal geometric axis, a Y-axis extending upward and orthogonally from the longitudinal geometric axis, and an X-axis extending orthogonally to the longitudinal geometric axis and the Y-axis; a housing defining a first longitudinal end, a second longitudinal end, and a cavity extending from the first longitudinal end toward the second longitudinal end; and a plurality of mechanical components, including a hydraulic interaction component, which are disposed in the cavity. The rod may extend from the cavity beyond the first longitudinal end of the housing, and a mounting flange may be disposed at the first longitudinal end of the housing. The mounting flange can define a pair of dowel receiving slots that are arranged along the geometric X-axis on either side of the rod, and each of the pair of dowel receiving slots can define radius centers that are spaced from each other in an X-dimension. A pilot projection can extend longitudinally in the opposite direction to the mounting flange, thus defining a pilot projection diameter, and a ratio between the X-dimension and the pilot projection diameter can be in the range of 1.1 to 1.5. Additionally, a female mounting member can be provided that defines a pilot projection receiving cavity that corresponds to the pilot projection, a first threaded hole that is aligned with a radius center, and a second threaded hole that is aligned with a radius center. [006] A female mounting member is provided that is configured to couple to a hydraulic pump or fan, according to an embodiment of the present disclosure. The member may comprise a body defining a projecting receiving cavity that defines a cavity diameter and a first threaded hole that defines a first threaded hole diameter. A ratio between the cavity diameter and the first threaded hole diameter may be in the range of 8.0 to 8.15. [007] A female mounting member that is configured to couple to a hydraulic pump or fan, according to another embodiment of the present disclosure, may comprise a body that defines a projecting receiving cavity that defines a cavity diameter, a first threaded hole and a second threaded hole that is spaced at a minimum center-to-center distance from the first threaded hole. A ratio between the minimum center-to-center distance and the cavity diameter may be in the range of 1.30 to 1.35. Brief Description of the Drawings [008] The attached drawings, which are incorporated into this descriptive report and constitute a part thereof, illustrate various embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure. In the drawings: Figure 1 is a perspective view of a hydraulic excavator that may use an engine employing a hydraulic pump or drive machine that has a mounting configuration to handle increased torque, according to various embodiments of the present disclosure. [009] Figure 2 is a schematic view of the excavator engine of Figure 1 shown by itself, which illustrates the hydraulic engine pump that powers the hydraulic fan driving machine. [0010] Figure 3 is a perspective view of the hydraulic fan pump of Figure 2 shown in isolation. [0011] Figure 4 is a left side view of the hydraulic fan pump of Figure 3, which represents its mounting flange, pi