Bearing element for slide bearing utilized for supporting drive shaft of hydraulic machine i.e. axial piston pump, has supporting rod elastically deformable such that bending of drive shaft and/or misalignment in rod is compensated

A technology of bearing components and sliding bearings, which is applied in the field of hydraulic presses and can solve problems such as deformation and sliding bearing wear

Inactive Publication Date: 2013-04-24
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The axial bending of the shaft is compensated by the elastic deformation of the bearing part, which otherwise has the disadvantageous consequence that the outer cylindrical surface, that is to say the sliding surface of the bearing part, is strongly deformed, whereby the sliding bearing is subjected to Relatively greater wear and tear

Method used

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  • Bearing element for slide bearing utilized for supporting drive shaft of hydraulic machine i.e. axial piston pump, has supporting rod elastically deformable such that bending of drive shaft and/or misalignment in rod is compensated
  • Bearing element for slide bearing utilized for supporting drive shaft of hydraulic machine i.e. axial piston pump, has supporting rod elastically deformable such that bending of drive shaft and/or misalignment in rod is compensated
  • Bearing element for slide bearing utilized for supporting drive shaft of hydraulic machine i.e. axial piston pump, has supporting rod elastically deformable such that bending of drive shaft and/or misalignment in rod is compensated

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Embodiment Construction

[0032] according to figure 1 The axial piston machine shown is an axial piston machine, in particular an axial piston pump of swash plate design, which is designated by the applicant as type A10 VO 45 and which is also operated with HFC fluids. The axial piston machine has a drive shaft 2 , in particular a drive shaft designated A10 by the applicant, which is slidingly mounted in a machine housing 8 of a hydraulic machine 1 via two plain bearings 4 and 6 according to the invention. The slide bearings 4 and 6 each have a bearing part 10 or 12 according to the invention, by means of which shaft deflections of the drive shaft and concentricity errors or misalignment errors of the slide bearings 4 and 6 can be compensated. On the slide-mounted drive shaft 2 a cylindrical roller 13 is arranged in the axial direction between the slide bearings 4 and 6 . The cylindrical drum is penetrated by the drive shaft 2 , wherein the cylindrical drum 13 and the drive shaft 2 are connected so tha...

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Abstract

The element (10) has an inner annular surface (56) for torque-proof connection with a drive shaft (2) of a hydraulic machine (1), and an outer annular surface designed as a radial sliding surface. The sliding surface is formed in a bearing retainer in a sliding manner. The annular surfaces are connected with one another over an elastically deformable supporting rod. The supporting rod is elastically deformable such that bending of the drive shaft and / or misalignment in the supporting rod is compensated. The supporting rod has an annular recess formed between the annular surfaces. An independent claim is also included for a hydraulic machine i.e. axial piston pump in swash plate construction type.

Description

technical field [0001] The invention relates to a bearing part, a slide bearing having such a bearing part for supporting a drive shaft of a hydraulic machine, and a hydraulic machine having such a slide bearing. Background technique [0002] A hydraulic machine of the swash plate type in the form of an axial piston machine is known from DE 103 00 070 A1. The hydraulic machine has a drive shaft connected to a drive. The hydraulic machine is supported radially and axially in the machine housing via two roller bearings arranged in an X-arrangement. During the operation of the axial piston machine, due to the asymmetric drive force of the drive unit acting on the drive shaft, the drive shaft undergoes axial bending. This leads to a very uneven loading of the rolling bearing, whereby the rolling bearing has increased wear, which in turn leads to a relatively short service life and relatively short maintenance intervals. Furthermore, with such rolling bearings it is essentiall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C27/02
CPCF16C17/10F04B1/122F16C23/04F04B1/2014F03C1/0644
Inventor G·盖泽
Owner ROBERT BOSCH GMBH
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