Vibration Analysis of Multi-rope Friction Hoist and Shaft Tower

As multi-rope friction hoist works under the conditions of heavy-load, impact and frequent starting-braking, the structural vibration of shaft tower is induced, also the hoisting capacity of mine and production safety are seriously affected. Taking the multi-rope friction hoist and shaft tower of a specific mine as engineering background, by vibration testing and analysis of hoisting equipment, the reasons of generating exciting force are determined when multi-rope friction hoist works. The finite element model of shaft tower structure was established by ANSYS. Based on the modal analysis and dynamic response analysis of the finite element model, the variation regularity of vibration displacement amplitude and dynamic stress amplitude with hoisting speed is obtained. A reasonable range of working speed for hoisting system is given based on integrating the running situation of hoist and analysis of dynamic properties.