Friction Mine Hoist Dynamic Simulation And Test Study Mechanical Manufacture And Automation

Mine hoist system, as the key part in the transportation of personnel, coal andmining equipment, is crucial for the safety and efficiency of the mining industry. Multi-rope friction hoist, when compared with its winding counterpart, shows great advantagein its compact shape and small volume. It is also easy to manufacture, convenient totransportation, and what’s more important, it enjoys high reliability and adapts to deepwell production. It has been widely used in mine hoisting system and become a kind ofequipment that been widely used in mine hoist production.With the deepening mine hoist depth, increasing mine hoist lifting weight, moreand more urgent requirement of high production and efficiency. The depth as well as thespeed of the hoist is improving. This increases the cable tension, intensify the cagevibration and the dynamic characteristics of the lifting system becomes more and morecomplex. Traditional analog and experience methods has not been able to solve theproblem of hoist dynamic design caused by high speed and overloading. Therefore, it isnecessary to apply the modern design method to high speed and overloading liftingdesign and make the efforts on mine hoist system dynamic study.The cable is the carrier of the friction mine hoist in dynamic transmission. Duringthe procedure of friction mine hoist working, the cable not only performed like largedeformation of flexible dynamics behavior but also performed as the dynamic change innonlinear contact with friction wheel. Relative node method, which takes the advantageof the theory that the relative translational displacement and the relative angulardisplacement between nodes t may describe the structure of large deformationmechanics behavior, can describe the cable dynamic behavior accurately. Therefore thispaper uses the relative node method to build the dynamics model of the mine hoist’scable. Using this model can make predictions about the cable tension and cage vibrationof the mine hoist under different velocity, acceleration and frictional coefficient. Such model is conducive for the study about the cable tension and cage vibration under theinfluence of various velocities, different acceleration, changing in the length of the cableand the friction wheel diameter. This paper also intends to clarify the impact of theacceleration and deceleration on the cable tension, and thus tries to find a way to limitor eliminate the elastic vibration of the cable and reduce the cable tension. And finally,the author tries to optimize the design of the mine hoist lifting system, and thereforeimprove the reliability and economy of the mine hoist system. The experiment researchis conducted on the base of numerical simulation. Through comparison between the testdata and simulation data, the author attests the availability of the building model method.This theoretical foundation of this paper is based on the theory of multi-bodydynamics and the virtual prototype technology, under the help of which the authorsuccessfully builds the virtual prototype model of the multi-rope mine hoist underdifferent parameters, and then makes dynamics simulation. The result of the research iscarried out after a meticulous study of the cable tension, cage vibration, anddeformation of the friction wheel under different velocity and acceleration. Comparedthe test results with the simulation results can verify the reliability of the virtualprototype technology. The applicability of such technology is so flexible that it can beextended beyond the mine hoist system to other similar flexible transportation systems,so this paper provides an economic and feasible research method about the flexibletransmission system dynamic research.