Dynamic Research On On System And Key Components Of Tower Friction Hoister

Performance of coal mine hoister is good or not directly affects the mining safety and life safety of the mine personnel.With the continuous development of mining machinery and technology progress as well as the growing demand for resources,the elevator is moving in the direction of large-scale,high-speed,overloading,puts forward higher and higher requirements on its performance.In this paper,through theoretical analysis,numerical simulation and experimental research on the method of combining the tower friction hoist system and key parts dynamic problems are studied.The main work is as follows:(1)In tower friction hoister as research object,to balance the rope as independent variables to consider with damping,will consider for the mass,stiffness and damping system,the dynamic system with time,hoist system more degrees of freedom nonlinear dynamic model is established.On the basis of considering practical simplified multiple degrees of freedom model,established tower hoist nonlinear dynamic model of five degrees of freedom and two degrees of freedom system unilateral and equation.Study theory is helpful to further the study of complex elevator key components in the cases of dynamic problems;(2)Hoisting rope is regarded as viscoelastic body,longitudinal coupling movement of lifting equipment for the dynamics modeling,and was used to solve the model.Bearing cage hoisting system are analyzed in detail the working process of the equipment,considering the elastic and damping characteristics of bearing equipment,the cage bearing instantaneous dynamic behavior of the model,the simulation analysis and combined with examples.(3)Skip hoisting system unloading device for mechanics analysis,a dynamic model of the unloading work;At the same time skip loading work of transient dynamics model is set up;Combined with the working process of the skip anti-slip tension analyzed.Happened to improve device status has carried on the detailed discussion and analysis,using the theory of the state overwind six degrees of freedom nonlinear dynamic model is set up,and combined with the simulation analysis on the model.(4)By finite element method of hoisting machine work mechanism of static analysis,modal analysis and dynamic analysis.Analysis will increase machine work mechanism as a whole,fully considering the mutual coupling effect of each element of work mechanism,and studies theory of dynamic design work for hoist mechanism provides a theoretical basis(5)By the self-developed hoist equipment,the use of TC-3 c elevator safety performance tester measuring velocity,acceleration and the operation process of hoist tension changes;The application of a new generation of Somat testing system for elevator work institution has carried on the field test the change of the stress;Ascending motor mechanics model established by comparing the simulation results,Verifying validity and feasibility study theory.Provide the basis for improve motor mechanics analysis and dynamic design,can further perfect the design theory of hoist.