Research on the Optimum Arrangement of Cut-Off Teeth for EBZ-135 Cantilever Type Roadheader Working Conditions
In order to solve the problems of serious vibration of the cutting head and large difference of force on the teeth under drilling and cross-cutting conditions,numerical simulation software was used to simulate and analyse the coal cutting process of the cutting head under drilling and cross-cutting conditions,and it was found that the difference of combined external force on the teeth under cross-cutting and drilling conditions was large,and the variation coefficient of the teeth under cross-cutting condition was 0.842,and that of the cutting head was 1.715,and that of the teeth under drilling condition was 1.361,and that of the teeth under drilling condition was 1.361,and that of the teeth under drilling condition was 1.363,and that of the head was 1.363.The variation coefficient of each cut-off tooth is 1.361 and the variation coefficient of cut-off head is 2.047.According to the results of the simulation study,the optimal design of the cut-off pitch of cut-off tooth is carried out,and the best cut-off pitch is determined,and it is found that the difference coefficient of the average value of the combined external force of the cut-off tooth decreases significantly after the optimization,which disperses the force of the cut-off tooth and enhances the life of the cut-off tooth,and contributes to the high efficiency of cut-off of roadheading machine.
NETL
NSTL
万方数据
