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Cage and hydraulic pump or motor including the cage

A technology for cages and hydraulic pumps, which is applied to components, pumps, piston pumps, etc. of pumping devices for elastic fluids, and can solve the problem of increasing equipment maintenance costs, frequent replacement of cages, and lowering of cages, hydraulic pumps or motors Service life and other issues

Active Publication Date: 2020-10-02
DANFOSS POWER SYSTEMS (ZHEJIANG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for traditionally designed cages, under conditions of high rotational speed or high working pressure, the stress is excessively concentrated at both ends of the stress-carrying part, thereby easily exceeding the physical endurance limit of the material constituting the cage, Cracks in the parts bearing the stress, seriously reducing the service life of the cage, hydraulic pump or motor, and technicians have to replace the cage frequently, which increases the maintenance cost of the equipment

Method used

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  • Cage and hydraulic pump or motor including the cage
  • Cage and hydraulic pump or motor including the cage
  • Cage and hydraulic pump or motor including the cage

Examples

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Embodiment Construction

[0019] In the following description, similar reference numerals will be used to describe similar technical features via different embodiments of the present invention.

[0020] Unless stated otherwise, technical features specifically described for a given embodiment may be combined with technical features described in the context of other embodiments by way of non-limiting example.

[0021] figure 1 A cage or platen 200 according to one embodiment of the invention is shown. The cage or pressure plate is used to limit the movement of the return plate 230 or the sliding shoe 240 of the hydraulic pump or motor, for example, Figure 5 is a schematic side view of installing the cage 200 in place in a hydraulic pump or motor according to an embodiment of the present invention. For clarity of illustration, Figure 5 Only schematically shows the three components of the cage 200, the return plate 230 and the sliding shoe 240 when they are installed in place, other components are omi...

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PUM

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Abstract

The invention discloses a retainer for a hydraulic pump or motor. The retainer is provided with a working surface, and comprises a stress surface and end part surfaces, wherein the stress surface is used for bearing the acting force applied by parts of the hydraulic pump or the motor during shifting, and the end part surfaces are recessed relative to the stress surface.

Description

technical field [0001] Embodiments of the present invention generally relate to cages, and more particularly, to a cage, and a hydraulic pump or motor including the same. Background technique [0002] When the hydraulic pump or motor operates at a high speed or high working pressure, the return plate and the sliding shoe will move axially. In order to limit the maximum amount of axial movement of the return disc and the sliding shoe, a cage or a pressure plate is usually used. When it is installed in place, the cage does not contact the return disc and the sliding shoe, but keeps a certain distance, so that the When working, limit the movement of the return plate and the sliding shoe within a certain range. Generally, the surface of the retainer that restricts the movement of the return disc and the shoe (that is, the part that bears the stress) is called the working surface, and the working surface bears the force generated when it contacts the moving return plate and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B53/00F04B9/10F03C1/00
CPCF03C1/002F04B9/10F04B53/00
Inventor 王晓刚郭志敏卡斯滕·费宾
Owner DANFOSS POWER SYSTEMS (ZHEJIANG) CO LTD