The vacuum fatigue test results of stainless steel compression spring cycling show that:

1. Medium sized industrial spring scroll

It could be the cause of a series of steel spring fractures Based on the combination of and, a rigid flexible coupling dynamics considering the flexibility of a series of steel springs has been established The development of Italian intercity train type air springs, the development of Italian intercity train type air springs, introduces the main technical parameter requirements, structural design, and finite element analysis of Italian intercity train type air springs, and conducts experimental verification of air spring types. After product installation and application testing, the results show that all functions of the air spring meet the technical requirements The motion rules of a spring oscillator in a lubricated horizontal plane, and the motion rules of a spring oscillator in a lubricated horizontal plane. In a nonlinear two degree of freedom spring oscillator, the model of motion in the lubricated horizontal plane has a motion differential equation

2. Jiangyin Spring

The gap sealing design of the spring indicates the change rules of radial stiffness under different radial force angles and offset distances Theoretical analysis was conducted on the stiffness of Archimedean spiral, and the axial stiffness formula was obtained. It was proposed to evaluate the spring function using the stiffness stress coefficient Finally, the theory is applied to finite element simulation. Under the same axial stiffness, comparing five types of vortex profiles, the Archimedean spiral has the smallest maximum stress and is suitable for long life The application of spring contact fingers in handcart circuit breakers, and the application of spring contact fingers in handcart circuit breakers are discussed in response to the problem of excessive clamping force of the plum blossom contacts in handcart circuit breakers, which can easily cause climbing during the pushing process of the handcart Analyze the causes of the climbing problem and combine the advantages of the spring contact finger, such as multiple contact points and good conductivity, through prototype testing and experimental verification

3. Air spring shock absorber

Optimize the scale of the connecting plate, establish a mathematical model for the optimized spring operation arrangement, and simulate it separately The simulation results show that the arranged output characteristics can achieve outstanding matching with the load power of the circuit breaker, and the optimized contact spring pressure is Microscopic arrangement and conflict function analysis of nitriding layer in spring steel, microscopic arrangement and conflict function analysis of nitriding layer in spring steel, in order to improve the wear resistance of spring steel surface, nitriding treatment was carried out at different times and temperatures, and the microscopic arrangement, hardness, and conflict function were experimentally tested The research results indicate that the nitriding layer forms an uncorroded bright compound layer, while the dispersed layer turns black due to the etching effect