Fatigue testing machine for torsion spring

Abstract

The invention relates to a fatigue testing machine for a torsion spring. According to the fatigue testing machine, a torsion spring fixture (4) comprises a sliding plate (6) and at least one fixing plate (7), wherein the fixing plates (7) are vertically fixed at the upper end face of a stander (1), and the planes of the fixing plates (7) are vertical to the axis of an output shaft of a motor (2); at least one deflector rod (9) is arranged at one side of the sliding plate (6), close to the fixing plates (7), the middle parts of the deflector rods (9) are connected into sliding chutes (8) in a sliding way, limiting rods (10) in one-to-one correspondence with the deflector rods (9) are arranged on the planes of the fixing plates (7) above the free ends of the deflector rods (9), sleeving rods (11) for sleeving the torsion spring are arranged right below the limiting rods (10) on the planes of the fixing plates (7), the sliding chutes (8) are located between the limiting rods (10) and the sleeving rods (11), and the distances between the limiting rods (10) and the sleeving rods (11) are shorter than the length of a twisted foot of the torsion spring. Compared with the prior art, the fatigue testing machine has the characteristics that the structure is simpler, the parts and components are fewer, the stability is better, the obtained test data is closer to an actual use condition, and the test efficiency is higher.

Description

technical field [0001] The invention relates to a torsion spring fatigue testing machine. Background technique [0002] At present, torsion springs are widely used in various fields, and the failure of torsion springs is generally fatigue failure, so the fatigue test of torsion springs is more important. The torsion spring fatigue testing machine of the prior art is not only complicated in structure, has many parts, is not easy to assemble, and has high preparation costs; it is relatively simple in structure, requires workers to manually carry out the test, and has poor stability during the test. The data difference during use is relatively large; and the torsion spring fatigue testing machine of the prior art can only carry out the fatigue test to one torsion spring at a time, so the test efficiency is low. Contents of the invention [0003] Aiming at the above problems, the present invention provides a torsion spring fatigue testing machine with a simpler structure, few...

AI Technical Summary

Problems solved by technology

The torsion spring fatigue testing machine of the prior art is not complicated in structure, has many parts, is not easy to assemble, and has high preparation cost; it is relatively simple in structure, requires workers to manually carry out the test, and the stability during the test is relatively poor. The data difference during use is relatively large; and the torsion spring fatigue testing machine of the prior art can only carry out the fatigue test to a torsion spring at a time, so the test efficiency is low

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