How to reduce the crack phenomenon of serpentine spring coupling

At present, because of the complex shape of the snake reed in the snake spring coupling and the related curved tooth surface on the outer tooth shaft sleeve, its manufacture is more difficult. In the manufacture of snake reed, not only need more special forming dies, but also difficult to meet the design requirements in dimension accuracy. The forming of the snake spring is achieved by using the mold in the state of heating, and then the heat treatment. In the heat treatment, the circular arc of the spring is prone to micro-cracks and other problems.

In order to reduce the fracture of the snake spring coupling, we need to do the following:

(1) Pay attention to the adjustment of concentricity error and Angle error between the two connecting axes, and try to be smaller than the design requirements.

(2) Improve the quality of the spring sheet. Special attention should be paid to material, hardness, heat treatment quality, etc., after heat treatment, there should be no cracks and other defects, pay attention to cleaning the sharp corners and sharp edges of the reed and tooth corners); Improve the machining quality of curved tooth surface.

(3) Reasonable selection of grease, not dilute lubricating oil, and the application of larger viscosity aluminum disulfide grease.

(4) to control the load, not full load use; Reduce the frequency of brake smell, especially emergency braking.

(5) When updating, new elastic rod pin type coupling should be used.

Because hot installation of the snake spring coupling needs to be carried out in a high temperature or a tense state, we should have a full estimate of some possible problems, and should try to avoid them in advance. If they happen, we will not panic on the spot, take timely measures to deal with them. First of all, it is necessary to make every operator understand the operation steps, to achieve a clear division of labor, and to stick to the post in the event of an accident. Secondly, it is required to calibrate the axis of the coupling horizontally or vertically, and align the coupling hole with the position of the shaft end. The position of the collision block should be adjusted carefully, carefully and correctly.