Fatigue testing device for lateral dynamic bending of piston rod of vibration damper

A dynamic bending and fatigue test technology, applied in measuring devices, using repetitive force/pulse force to test the strength of materials, instruments, etc. Convenience and the effect of ensuring product quality
CN101696920AActive Publication Date: 2010-04-21锦州万友机械部件有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
锦州万友机械部件有限公司
Publication Date
2010-04-21

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Abstract

The invention relates to a fatigue testing device for lateral dynamic bending of a piston rod of a vibration damper, which is provided with a simple harmonic motion mechanism driven by a driving device to be used for providing simple harmonic excitation; a spring support is sleeved outside an output component of the simple harmonic motion mechanism; two pressure springs which are arranged from top to bottom are arranged in the spring support; the output component of the simple harmonic motion mechanism is clamped between the two pressure springs; the upper end of the spring support is connected with a force sensor; the upper end of the force sensor is connected with a universal connector; and the device is also provided with a fixing clamp and a data acquiring and processing system, wherein the signal output end of the force sensor is connected with the data acquiring and processing system. The invention has the advantage that bidirectional symmetric exciting force with the same maximum value can be applied to piston rods of various specifications to enable each piston rod to complete excitation for the set times under a certain excitation frequency, thus the fatigue strength of lateral dynamic bending of the piston rod of the vibration damper can be detected to ensure the product quality.
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Description

technical field

[0001] The invention relates to a device for fatigue testing the piston rod of the automobile shock absorber, in particular to a lateral dynamic bending fatigue test device for the piston rod of the shock absorber. Background technique

[0002] The shock absorber in the automobile suspension system mostly adopts the double cylinder piston type hydraulic shock absorber. In the automobile suspension system, the shock absorber is installed in parallel with the elastic element, its upper end is connected with the frame or body, and its lower end is connected with the axle. When the car is running, the piston rod of the shock absorber not only bears the random alternating axial force, but also bears the random alternating lateral force. The alternating lateral force is easy to cause fatigue fracture of the piston rod, so the piston rod bends laterally Fatigue life is related to the stability and safety of vehicle driving. However, there is no special device for ...

Claims

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