Study On Dynamics Of Dump Rail For 32t Up-open Fan Gate Skip

The rail automatic dump is one of the most frequently used dump patterns. The off-time hoisting system will cut down and the work efficiency of mine will be improved when using this dump way. At the same time, the cost of the installation and operational maintenance of the system are relatively low, which leads to great welcome in the mine industry.When the rail automatic dump is used for large-tonnage skips, the strength needed to open the strobe has increased and the amount of force that the rail bears would also increase exponentially. Furthermore, the stress of curved rail is extremely heterogeneous, which results in abrasion of the dump wheel and curved rail. Thus giving rise to potential safety hazard and bringing out unnecessary lose to business.The paper regards the 32 tons of up-open fan gate as research objects, aiming to optimize the shapes of rail curve, analyzing the disadvantages of unloading rails at present, comparing the stress state of the four unloading rail curves at work to find out shapes of rail that are more appropriate for the 32 tons of skip. The research content of this paper are as follows:(1) Firstly, analyze to the structure and work theory of the skip, coming up with potential problems among unloading process; Then take theoretical calculates to the stress of rail, finding out influential factors of stress; At last, build the solid model of skip.(2) For the problems, study and build mathematical model for the four rail curves, by applying theoretical knowledge, achieving the skip angular velocity and angular acceleration curve of strobe, opening of each kind of rails by calculating and seeding out ideal curves by comparing and analyzing.(3) Build solid models for each rail in the 3D modeling software, matching each rail with its skip in the assembling module, then conserve the models of the skips and rails in general format and import it to simulation software, acquiring each rail force diagram and the velocity diagram and acceleration diagram of unloading wheels by simulating, verifying the correctness of ideal unloading rails.(4) Analyze primary abrasion forms of the rails and take checking of the contiguous fatigue intensity of ideal rails to verify whether the rail is satisfied with the requirement of the material intensity. Take finite element analysis of the rails with ABAQUS software and compare with the conclusion of theoretical calculation to verify the correctness of calculations.