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Air spring stiffness characteristic test device

A technology of air spring and test device, which is applied in the direction of measuring device, testing of mechanical parts, testing of machine/structural parts, etc. The effect of large scope and simple fixture structure

Pending Publication Date: 2020-05-08
DONGFENG DANA AXLE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Invention CN202420840U provides a kind of air spring dynamic stiffness test device, which can test the dynamic stiffness characteristics of the air spring. The test device is easy to be unstable when loaded, and the load measurement accuracy is low when the dynamic stiffness is loaded at high frequency

Method used

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Embodiment Construction

[0011] Such as figure 1 , figure 2 , image 3 As shown, the present invention has a horizontal structure, and the main supporting bodies include a wedge-shaped support 5, a guide support 6, and an air spring support 7, and the bases of the three are fixed on the ground. The base of the joint one 8 is connected with the right side end face of the wedge-shaped support 5, and the height is adjustable, and a rotating pair is connected between the actuator cylinder block 9 and the joint one 8. The actuating head 1 and the joint 2 10 are also connected by a rotating pair. This connection can avoid space interference when the actuating head 1 moves due to over-constraint. The base of the joint 2 10 is fixed on the slide rail gas spring connecting plate 2 by bolts. At the same time, the bottom surface of the gas spring connecting plate 2 of the slide rail is connected with the guide rail 11. The two are sliding pairs, and its main function is to guide and reduce friction. The guide...

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Abstract

The invention relates to an air spring stiffness characteristic test device used for an automobile suspension component characteristic test. An integrated sensor is fixed on the outer wall of an actuating cylinder body, an electro-hydraulic servo device is connected to the actuating cylinder; a wedge-shaped bracket, a guide bracket and an air spring bracket are fixedly arranged on the ground; a connector 1 is fixed to the wedge-shaped support and connected to the actuating cylinder body through a revolute pair, an actuating head is connected to a connector 2 through a revolute pair, and a baseof the connector 2 is fixed to a left side surface of a sliding rail air spring connecting plate; the bottom surface of the sliding rail air spring connecting plate is matched with a guide rail whichis installed on a guide rail supporting plate, and the guide rail supporting plate is fixed to the guide bracket; a right side of the sliding rail air spring connecting plate is connected to an air spring base, the upper end face of the air spring is connected to a triangular plate which is provided with an air spring air path interface, and a bottom surface is fixed on the air spring bracket. According to the invention, the stiffness of the high-load and large-stroke air spring can be effectively tested, the test precision is high, the loading range is large, and meanwhile a clamp is simplein structure and convenient to assemble and disassemble.

Description

technical field [0001] The invention relates to the technical field of characteristic test of automobile suspension components, in particular to a test device for testing the stiffness characteristic of an air spring. Background technique [0002] Air springs are used more and more widely in the field of automobile manufacturing, and they are indispensable elastic components in automobile suspensions. Especially in the field of passenger cars, which have higher and higher requirements for ride comfort, the importance of air springs has been recognized to a certain extent. High attention, compared with the traditional coil spring, its bearing capacity is strong, the stroke is large, and it is resistant to breakdown. The biggest advantage is that the nonlinear stiffness characteristic can improve the ride comfort of the vehicle, reduce the dynamic load of the wheel on the ground, and prolong the use of vehicle parts. life. The stiffness of the air spring in use is affected by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01M17/04
CPCG01M13/00G01M17/04
Inventor 曾洋洋龚炫卢金良邵庆刚
Owner DONGFENG DANA AXLE
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