Apparatus and method for vertical fatigue test of vertical leaf spring

Abstract

An experimental device and method for the vertical and longitudinal fatigue of a longitudinally arranged leaf spring are disclosed. The device includes a right lifting lug fixing seat, a left liftinglug bearing seat disposed on the left side of the right lug fixing seat, a middle fixing frame arranged vertically and fixed to the middle section of a longitudinally arranged leaf spring, a verticalforce applying frame connected with a vertical loading device and arranged vertically, and a longitudinal connecting seat connected with a longitudinal loading device and arranged longitudinally. Thedevice is characterized in that a left lifting lug of the leaf spring can be installed on the left lifting lug bearing seat in a swinging manner; a right lifting lug is fixed on the right lifting lugfixing seat; and the middle fixing frame is disposed in the vertical force applying frame, is rotationally connected with the vertical force applying frame, and is connected with the longitudinal connecting seat in a universal movable manner, so as to transfer the vertical load on the vertical force applying frame and / or the longitudinal load on the longitudinal connecting seat to the leaf spring.The device and the method can be used to detect the longitudinal fatigue life of the leaf spring, and can improve the reliability and authenticity of fatigue experiment of leaf spring loading in a composite direction.

Description

technical field [0001] The invention relates to a vertical and longitudinal fatigue test device and method for a vertical plate spring, which is used for performing vertical and longitudinal fatigue tests on a vertical plate spring. Background technique [0002] The leaf spring is generally fixed on the axle with two or two U-shaped bolts, and the bushings are pressed into the lug holes at both ends of the spring. The right hanging lug is connected with the front bracket by a leaf spring pin to form a fixed fulcrum; the left hanging lug is connected with the hanging lug which is hinged on the hanging lug bracket and can swing freely through the front leaf spring lifting lug pin, thus ensuring When the spring deforms, the distance between the centerlines of the two lifting lugs may change. [0003] With the improvement of automobile comfort and energy saving and environmental protection requirements, the requirements for lightweight automobiles are getting higher and higher....

AI Technical Summary

Problems solved by technology

In this plan, the test tooling for three-way loading of the leaf spring is given, but it is not installed according to the actual installation structure of the leaf spring on the car. Are not the same

[0009] Thus, in the prior art, there is no composite loading device designed according to the actual installation method, size and loading motion deformation characteristics of the vertical leaf spring on the automobile, and the reliability of the fatigue experiment of the composite direction loading of the leaf spring and authenticity needs to be improved

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