Device and method for testing weld fatigue capability of automobile rear tie rod
A fatigue capacity and tie rod technology, which is applied in the direction of applying repetitive force/pulsation force to test the strength of materials, can solve the problem of weld fatigue capacity that cannot be tested for tie rods, shorten the verification period, save costs, and improve verification efficiency. Effect
Pending Publication Date: 2022-04-15
CHONGQING CHANGAN AUTOMOBILE CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to provide a device for testing the weld fatigue capacity of the rear tie rod of the automobile, so as to solve the problem that the fatigue capacity of the weld seam of the tie rod cannot be tested in the prior art; the second purpose proposes a test based on the device method
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[0033] The implementation of the technical solutions of the present invention will be described below with reference to the accompanying drawings and preferred embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, but not for limiting the protection scope of the present invention.
[0034] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components r...
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The invention relates to a device and method for testing the weld fatigue capability of an automobile rear tie rod, and the device comprises an actuator which comprises a support and a fixed mandrel, the support is fixedly arranged, the fixed mandrel can penetrate through a liner tube of the rear tie rod and the support at the same time, a rear pull cross rod is fixed on the support, the device also comprises a fisheye connecting rod, and the fisheye connecting rod is connected with the fixed mandrel. The end of the fisheye connecting rod is connected with a fisheye hole of the fisheye ball hinge assembly, the fisheye connecting rod can penetrate through a U-shaped support of a rear transverse pull rod and is fixed, an axial connector of the fisheye ball hinge assembly is connected with a piston rod of an actuator, and the axis of the fisheye connecting rod intersects with the axis of the fisheye connecting rod. According to the invention, only one actuator is adopted, a bending moment load and a torsion load can be loaded, loading in two directions with the largest rear tie rod weld joint damage is simulated, the verification period is shortened, the verification efficiency is improved, and the cost is saved.
Description
technical field [0001] The invention relates to the technical field of auto parts, in particular to the technology of verifying the fatigue ability of the welding seam of the rear tie rod of the automobile. Background technique [0002] The rear axle tie rod of the car is located in the rear axle part of the car. It is an important connector connecting the two rear wheels of the car and an important part to ensure the safe driving of the car. The rear axle longitudinal tie rod is used to stabilize the rear axle. [0003] The structure of the rear tie rod of the car is as figure 1 As shown, it includes liner 1 , connecting rod 2 and U-shaped bracket 3 connected in sequence, and the welding seam of the rear tie rod is located at position A, that is, the joint between connecting rod 2 and U-shaped bracket 3 . At present, in the automotive industry, the welding seam fatigue verification of automotive rear tie rod parts is based on the way that the actuator applies tension and ...
Claims
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IPC IPC(8): G01N3/36
Inventor 秦中洋
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD