Dynamic Simulation Of The Wire Ropes Traction Device Winding Progress And Its Structure Optimization

In recent years, with the increasing demand for electric power in many industries, the construction of power transmission network had been vigorously carried out in our country. The tension stringing was the key process of power grid construction, as its core equipment, the performance of the 90 k N wire hydraulic traction machine played an important role during the construction of power grid efficiency. However, due to the action of the poor working environment in the wild and the high tension line, the traction drum and wire rope would appear wear and tear obviously, at the same time, because of the design of the traction machine’s key parts was lack of the characterization of the mechanical properties data, the design often depended on experience, this made the main parts appear deformation, fold-collapse and other phenomenon due to the lack of performance design redundancy or performance, So it was necessary to carry out dynamic simulation and structural optimization of the traction machine’s key components traction device. In this paper, during the deeply research on the winding process of the wire rope traction device, using the dynamic simulation and finite element analysis method to realize the structure optimization of the traction drum and other key components based on orthogonal test method. The specific research works were as follows:(1) Aiming at the problem of serious wear of the traction drum and wire rope, the winding process was studied by the theory of mathematics and mechanics, obtaining the attenuation regularities of wire rope tension, proposing the average compressive stress of traction drum to be the evaluation parameters of the wear during the same time, the main factors affected the wear between traction drum and wire rope were determined on that basis, and discussed its affection on the wear mechanism.(2) According to the actual design of traction device and combining with the design specifications, selecting the level value of each factor, the orthogonal text was designed by set the average compressive stress from wire rope to traction drum groove in the state of tension stringing as the index value, 27 geometric models of the rigid body of the traction drums were established by using the combination of factors in each test group, the flexible body model of wire ropes were built based on the bushing method at the same time, and exerted the corresponding constraints, drive and loads according to the actual condition of the traction device, the establishment of dynamic simulation model of the wire rope winding through the traction drum was completed.(3) With the aid of the dynamic simulation software ADAMS, the dynamic simulation of the winding process of the 27 groups of the wire rope winding through the traction drum were carried out which based on the orthogonal experimental design method, and the results of the simulation were analyzed, through the analysis and comparison of the calculation and simulation value of the wire rope tension, the reliability of the dynamic simulation model was verified, and aimed at the multiple sets simulation results of the orthogonal test, a set of parameters to minimize the average compressive stress was obtained by using the variance analysis method, and left it as the structure improvement parameter of the traction drum, the structure optimization of the traction drum was finished at last.(4) The whole geometry model and its dynamic simulation model of the traction device were established by the help of the traction drum which the structure had been optimized, the dynamic simulation of the winding process of the traction device was carried out, the stress state of the connecting rod and the drum shaft were obtained, and put this stress state as the parts’ load to conduct the statics analysis through the ANSYS Workbench software, the structure optimization aimed to light weight of the connecting rod and the drum shaft was carried out according to the result of the stress analysis, and then did the static analysis again to prove the optimization scheme validity, the overall structure optimization of the wire rope traction device was realized finally.