Study on the vibration characteristics of coke pushing ram in the coke pushing process

Abstract

Serious vibrations can occur in the coke pushing ram in the coke pushing process and may directly affect the regular production of coke oven, in order to avoid vibration, it is necessary to study the vibration characteristics of coke pushing ram. In this article, the coke pushing resistance is derived via the coke pushing current and a mathematical model of coke pushing ram in the coke pushing process is established to study the vibration mechanism of coke pushing ram. The results indicate that in the low-velocity and heavy-load coke pushing process after the slipper enters the carbonization chamber, the coke pushing velocity is less than the critical velocity, which indicates that the stick-slip vibration occurs in the coke pushing ram, and the factors affecting the coke pushing ram stability mainly include the difference between the static and dynamic friction coefficients, stiffness, and damping. The results are validated by numerical simulation and experiment test.