| The explosion-proof motor, used in the machine for excavating thin coal bed, has a technical developing trend of more power and more power density. Along with the continuous increase of the design capacity of motor unit volume losses in the motor increase, which lead to the rise of temperature in every part of the motor. So improving cooling system and confining temperature difference become one primary problem in the development of technology in the machine for excavating coal. Aim the problem,three sides include reasonable selection of motor materials, optimization of electromagnetic design and optimization of cooler are researched, which reduce power losses and make distribution of heat suited.Electromagnetic parameter and power loss are calculated according to electric engineer theory and related research results. Secondly, For the structure of the electrical characteristics and performance requirements, combined with the cooling system of motor-related technical requirements, Reciprocation watercourse is adapted to cooling system whose Production process with easy and low-cost manufacturing. Thirdly, the fluid and the thermal force is checked numerically. Finally, In order to ensure safe and stable running of motor ,the frame and shaft of stiffness and strength are calculated.Every job is done in the light of reasonable foundation and related check. The electromagnetic loss is the base of thermal force calculation, thermal force and the fluid used to check the rationality of waterway structure. The mechanical force is assured the operation reliability of motor.The design of the motor is reasonable according to operation result in the practice.
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