Axial piston unit for integrated wheel hub

A technology of axial piston and integrated wheel, which is applied in the field of integrated hub assembly and integrated hub, and can solve the problem of not having enough space for positioning

Inactive Publication Date: 2003-04-23
SAUER DANFOSS NORDBERG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, in applications where variable displacement hydraulic motors are required, there is insufficient space in the bore of the main shaft bearing to locate and fit the swash plate and servo system of the variable displacement hydraulic unit

Method used

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  • Axial piston unit for integrated wheel hub
  • Axial piston unit for integrated wheel hub
  • Axial piston unit for integrated wheel hub

Examples

Experimental program
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Embodiment Construction

[0019] In FIG. 1 , the integrated hub assembly of the present invention is indicated generally at 10 . The hub assembly 10 includes a hub 12 having an outwardly directed flange 13 onto which a wheel (not shown) is conventionally mounted. The hub 12 has an inner portion 14 and an outer portion 16 , and an open or hollow middle portion 18 with a centerline of rotation 20 . Since wheel hub assemblies can be used to set wheels on both sides of the vehicle and on both sides of the driven wheels, the terms "inner" and "outer" are used herein to determine which are located away from the driven wheels and which are close to them, respectively. drive wheel set. Similarly, an inboard or inward direction means extending away from the wheel, and an outboard or outward direction means extending toward the wheel.

[0020] Referring to Figure 1 and figure 2 The hub assembly 10 has a spindle assembly 22 including an elongated spindle 24 and a cover 26 connected to the spindle 24 by convent...

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PUM

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Abstract

An integrated wheel hub assembly includes a hydrostatic spindle assembly that has a spindle with a hydrostatic rotational power unit and integral high-pressure passageways therein, a wheel hub rotatably supported by the spindle assembly, and an axle shaft extending through the spindle for transmitting power from the hydrostatic unit to the wheel hub through a planetary gear set reducer. For radial compactness, the swashplate of the hydrostatic power unit resides outside the wheel hub.

Description

Background of the invention [0001] The present invention is in the field of integrated hubs combining hydraulic rotary power units with mechanical gear drive assemblies such as planetary gear set reducers. In particular, the present invention relates to a novel and compact construction of a hydrostatic rotary power unit within an integrated hub. [0002] A common approach to an integrated hub structure is to place the swashplate or axial piston unit of the hydraulic rotary power unit deep within a larger cavity formed in the fixed main shaft. The main shaft, in turn, is buried deeper and rotatably supports the rotating hub of the integrated hub with the assistance of suitable bearings between the inner side of the hub and the outer side of the main shaft. The cylinder and piston assembly of the hydraulic unit is located in the cavity between the swash plate and the main opening of the cavity. A separate end cover section with suitable high pressure ports for the hydraulic un...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B60K7/00F03C1/253
CPCB60K17/046B60K7/0015B60K2007/0092B60K2007/0038
InventorJ·C·汉塞尔
OwnerSAUER DANFOSS NORDBERG