Abstract
In order to make the coal mining machine adapt the narrow work space underground, and the height of shearer is decided by the planetary gear transmission mechanism of traction unit. In this paper, the volume of planetary gear transmission mechanism is selected as objective function, and module of gear, teeth of sun gear, width of gear are considered as design variables based on mechanical transmission theory, and the optimized mathematical model of the planetary gear transmission mechanism of traction unit is established. The optimized mathematical model is solved by SQP(sequential quadratic programming) basd on Matlab program, the volume of planetary gear transmission mechanism reduces 20.22%, and the height of shearer decreases 11.3%.
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