Research On Mulit-functional Rope Adjusting Device

With rapid development of China’s modernization, the demand of coalresources continue to increase has put forward higher requirements for the safeand efficient production of mine shaft hoisting system. Rope adjusting work isan important work to maintain the vertical shaft hoisting system. Reliable ropeadjusting device and rope adjusting technological process ensure rope adjustingoperation safety and fast. The existing rope adjusting device can only adjustone-side’s rope and its function is single. The existing rope adjusting device hasdifficulties in releasing rope and can’t achieve the security protection forhoisting system. The present rope adjusting device has been unable to meet theapplication requirements.Through analyzing and comparing the existing domestic and foreign ropeadjusting devices, aiming at their shortage, fully considering the actual needs,this paper proposed a plan of multi-functional rope adjusting device. It canachieve rope adjusting function, security protection function and rope clampingfunction. This paper designed the mechanical part, hydraulic part and electricalcontrol part of the device, introduced the composition of each part and how toachieve each functions. By analyzing various working conditions of multifunction rope adjustingdevices and existing wedge rope locking device, this paper designed a new rackand pinion rope locking component. Through the mechanical analyzing ofgrabbing rope and clamping rope, this paper pointed out that security protectiongrabbing force should be less than the minimum rope breaking force and alsopointed out self-locking condition of the rope locking component. The lockingrope process is dynamic simulated by ADMES. The simulation results show thatrack and pinion rope locking component can lock the rope safety at differentworking conditions. The simulation results provide the basis for the realizationof each function of multifunctional rope adjusting device.The key parameters of security protection function are the response timeand the synchronization of grabbing rope. This paper established the hydraulicsystem model by using AMEsim, simulation researched the impact on responsetime when using accumulator as power source and impact on synchronization ofgrabbing rope when using synchronous shunt motor. The simulation resultsshow that after using synchronous shunt motor, the synchronization of grabbingrope error does not exceed3%. It can feed the actual needs.The working load of multifunction rope adjusting device eventuallytransferred to the bearing members. The bearing members are formed by themain board, mobile bearing module and the short bearing beam. This paperanalyzed the working situation of the main board, mobile bearing module andthe short bearing beam, and then made a preliminary structural design. This paper used Solidworks software to create their3D model and then analyzed theirstructure by finite element analysis with ANSYS Workbench software. Thenmade the optimization of structural design and got more reasonable structurewhich provides a theoretical basis for structure design.