The air spring suspension device maintains a constant height under load changes and is a suspension device with stepping characteristics. This has been applied to foreign suburban trains with good performance. DC passenger electric vehicles (940BMC and 604CTC) with secondary air spring suspension have been put into trial operation in the Churchgate-Virar section of the Western Railway Company since March 2000, and their operational performance is so far satisfied. Basic Principles of Air Springs The basic principle of air springs is that the air mass in the pressure vessel is compressed to generate force. The shape, size, and internal pressure of the container determine the static force of the air spring, while the dynamic force is determined by the change in internal pressure and the effective area of ​​the air spring when the height changes. When the vehicle equipped with the air spring suspension is loaded or unloaded in a stationary state, the height is controlled to increase or decrease the amount of air in the air spring to maintain the set height of the air spring. In this way, a certain amount of pressure in the air spring can be increased or decreased, resulting in a re-equilibrium with a lifting force that is currently matched by the downward force due to the new load condition. There is a small hole between the air spring and the auxiliary gas storage tank. The self-damping characteristic can be obtained by using the small hole of suitable size. The resistance generated by the air flow through the small hole acts as a damping function, and the vertical and lateral overall performance of the air spring depends on The air capacity, the shape and size of the air cylinder, the characteristics of the air used, and the multivariate index. Air suspension device The suspension device with secondary air spring has been used in Indian railways. Through the simulation study of NUCARS, a vehicle dynamics software package provided by AAR, it has achieved the best stability and comfort for air spring vehicles. Optimized values ​​for the required stiffness and damping characteristics. A detailed vibration test will be carried out on the prototype to determine the validity of the test results and, if possible, further optimization. Micro Gas Torch,Gun Torch Head,Gas Butane Blow Torch Burner Welding Flame Gun Shangqiu Zhengtu Hardware Technology Co,.Ltd , https://www.zlztlighter.com
Installation of gas springs for foreign railways