Research On Heavy Load And Deep Mine Adjust Rope System

With the development of mine elevator equipment for efficient, large-scale and automation direction, mine elevator technology has been developing rapidly. And kilometers deep mine will be more and more. This type of mine is characteristic of heavy load, high efficiency, shaft bottom deep etc. However, for this condition of heavy load and deep mine, the present adjust rope device is difficult to meet the application requirements. The adjust rope process exist the problem of tedious steps, potential safety hazard and occupancy long time etc.This paper fully considers the key influence factors of adjust rope work and compares the present adjust rope process. And then, aimed at the limit of the present adjust rope device, design a set of adjust rope system which can adapt to all kind of vertical shaft (especially heavy load and deep) condition. Adopting the mechatronics and hydraulics integration thought, the system is designed in detail from machine, electricity and liquid three aspects. Meanwhile, its working principle and adjusting rope technological process are introduced.Through the common lock institutions scheme comparison, this paper designs the lock rope device which adopt the wedge self-locking principle and add increase force institutions. Wedge angle of the double wedge mechanism is determined through theoretical analysis, which makes the lock rope device not only realize self-locking, but also achieve the purpose of fast release rope. The increase force institutions is designed by lever principle, and make it have compact structure and reliable increase force. The lock rope device is dynamic simulated by ANSYS/IS-DYNA. The simulation results show that the lock rope device realize self-locking, the increase force can effectively improve the lock rope security and stability, and reduce rope wear. The simulation results provide a theoretical basis for design. The interlock control of lock rope device ensure the system always maintain stability lock for the hoist vessel in the process of adjust rope.Through apply the synchronous valve control circuit in the hydraulic systems, the four stepping cylinder of lifting device realize synchronous expansion action, and ensure the synchronizing lifting device simultaneously ascend and down the hoist vessel, also effectively improve the load conditions of the system structure. The coordinate of synchronizing lifting device and locking device can realize to online continuous adjust the first-rope, and ensure the first-rope length can be adjusted properly once.Mobile bearing device adopts "truck crane" work principle, the ascending jack and mobile wheels alternately bear the instant load, which make the system realizes fast in place and rapid offline. Above and under bearing beam are optimized by ANSYS finite element analysis and get a reasonable structure, which provides theory basis for structure design. Make a prototype, build experimental platform and conduct experiment research. Test results show that the lock rope device can realize to lock and ascend the 60t first-rope and ascend vessels; the coordinate action of each device can realize to online continuous adjust the first-rope; Mobile bearing device can realize fast in place and rapid offline. In short, the system can adapt to all kind of vertical shaft (especially heavy load and deep) condition.