Apparatus of detecting spring performance and usage method thereof

Abstract

The invention discloses an apparatus of detecting spring performance and a usage method thereof. The apparatus comprises a cavity, a shaft sleeve, a spring, a main shaft, a bolt, a support cover plate, a fork-type connecting rod, a contact terminal, a push plate, a spindle nut, a spring pad, a fastening pin, a rotation shaft, a check ring, a lever arm, a bolt, a limiting flange, a stroke touch block, a positioning bolt, a check decoupling assembly, a tension sensor and a data processor. The shaft sleeve, the main shaft and the spring are installed in the cavity. The main shaft passes through a center hole of the cavity. Two ends of the cavity are provided with the support cover plate and the limiting flange. The fork-type connecting rod and the lever arm are fastened by the fastening pin and then are clamped on the support cover plate through the rotation shaft. The push plate, the spring pad and the spindle nut are successively installed on one end of the main shaft. The stroke touch block, the positioning bolt and the check decoupling assembly are installed on the other end of the main shaft. For the spring with a stretched length requirement, a stretched length of the spring can be verified and a stiffness coefficient of the spring can be measured. A digital processing technology is introduced, operation is simple and detection efficiency is high.

Description

technical field [0001] The invention relates to mechanical testing equipment, in particular to a device and a method for testing spring performance. Background technique [0002] Before each batch of spring leaves the factory, a tensile test must be done to check the stiffness coefficient of the spring. However, for springs with stretching length requirements, it is also necessary to verify whether their stretching length meets the requirements. It is a bit unsuitable for the advanced measuring instruments. It is often necessary to change the weight several times to achieve the required stretching length. There are too many operating steps, which is a bit cumbersome. According to Hooke's law F=K·ΔL, imagine that if there is a device that can give the measured spring a continuously increasing tension until the stretching length required by the spring is reached, then measure the tension on the spring and calculate it The stiffness coefficient of the spring achieves the effec...

AI Technical Summary

Problems solved by technology

[0002] Before each batch of spring leaves the factory, a tensile test must be done to check the stiffness coefficient of the spring. However, for springs with stretching length requirements, it is also necessary to verify whether their stretching length meets the requirements. It is a bit unsuitable for the measuring instrument. It is often necessary to change the weight several times to achieve the required stretching length. There are too many operating steps, which is a bit cumbersome.

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