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Method and device for monitoring the quality, particularly the stiffness and the phase, of a hydroelastic joint

A technology for elastic joints and performance, which is applied in the field of controlling the performance of hydro-elastic joints, and can solve the problems of not allowing to test the characteristics of hydraulic components.

Inactive Publication Date: 2014-01-22
ANVIS SD FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method disclosed in this patent application does not allow to examine the characteristics of the hydraulic components of the hydroelastic joint

Method used

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  • Method and device for monitoring the quality, particularly the stiffness and the phase, of a hydroelastic joint
  • Method and device for monitoring the quality, particularly the stiffness and the phase, of a hydroelastic joint
  • Method and device for monitoring the quality, particularly the stiffness and the phase, of a hydroelastic joint

Examples

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Embodiment Construction

[0044] exist figure 1In it, a hydroelastic joint 1 comprises an outer cylindrical metal support element 10 with a collar 11 folded down, an inner support element 12 initially coaxial with the outer support element 10, a plastic spacer fitted on the inner support element 12 13. Several elastic sections 14, 15 and 16 machined to increase the viscosity and glued or fitted on one or the other support element, and two hydroelastic cavities 17. In the present exemplary embodiment, the elastic joint 1 has a theoretical working axis 18 which is likewise the axis of symmetry of the elastic joint. During the production cycle, this elastic joint is placed between two housings 20 and 21 which press the elastic joint on the outer support element 10 with a force sufficient to avoid any slipping of the elastic joint during impacts, while Permanent deformation thereof is also avoided. In this embodiment, the circular collar 11 of the outer support element 10 rests on the two half-shells 20 ...

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Abstract

A process for testing the quality, in particular the stiffness and the phase, of an elastic joint for connecting two other parts while filtering vibrations transmitted between these two other parts, said elastic joint being meant to work in axial, radial or torsional direction, disposing or not disposing of one or more hydro-elastic chambers and of two cylindrical concentric support elements, the inner support element being located to a large extend inside the volume defined by the outer support element, the two support elements being connected by a set of components made of rubber or elastomer or, if applicable, of plastic and metallic parts, wherein said support elements are themselves respectively attached to the two other parts which the elastic joint connects, wherein a technique of testing by impact is applied within the timing of the production line of the elastic joint, i.e. less than 10 seconds per cycle, for identifying good joints from bad ones through a frequential analysis of the oscillation of the impacted area of the elastic joint, characterized in that the values of the phase shift of the frequential analysis are compared with a bandwidth of permissible phase shift.

Description

technical field [0001] The present invention relates to a method and a device for controlling the properties of a hydro-elastic joint, in particular stiffness and phase. The most common fields of application of these devices are those involved in establishing the ground contact of automobiles or utility vehicles, especially when they are used as spacers between the saddle and the chassis or as motor supports or as transmission elements or for establishing the vehicle's This is the case for torsional vibration absorbers of ground-contacting elements. Background technique [0002] In the following, the generic term "elastic joint" will be used to denote these spacers, supports or articulations, except in cases where specific characteristics of one or the other product are stated. [0003] These elastic joints are located on the contact surfaces of the two parts to be connected and are used to filter and change the phase of the vibrations transmitted between the two parts to b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/08G01M13/00
CPCG01M13/022G01M7/08
Inventor 塞尔日·韦尔热
Owner ANVIS SD FRANCE
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