(College of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China)


Abstract: Aiming at the problem that the maximum stress dynamic change of the main shaft part during the lifting and lowering process of the friction hoist was difficult to grasped, the stress variation characteristics of the liftingstationarydownward process of a new type of friction hoist main shaft device were studied. The finite element software ANSYS was used to establish the static analysis model of the main friction hoist spindle device，the ADAMS discrete flexible joint method was used to establish the steel wire rope. The finite element software ANSYS was used to establish the rigidflexible coupling model of the friction hoist spindle device, and the stress cloud diagram of the main shaft of the hoist during a liftingstationarydecentralization process was obtained. The results show that the main axis stress is minimum in the stationary phase. In the clockwise acceleration phase, the guidance friction hoist spindle obtained the maximum stress in the whole process. In the counterclockwise acceleration phase, the main friction hoist spindle obtained the maximum stress in the whole process. In the clockwise deceleration phase, the main friction heist spindle obtained the maximum stress in the lifting stage. In the counterclockwise deceleration phase, the guidance friction hoist spindle obtained the maximum stress in the lowering stage.
Key words: friction hoist; spindle stress; rigidflexible coupling; dynamics