The structure and principle of the drum gear coupling before improvement

The structure and principle of the drum gear coupling before improvement

　　The connection between the motor and the coupling before the improvement is: the mating part of the motor and the half coupling 4 is 6mm, the length is 32mm, there is no keyway on the shaft, and the key connection cannot transmit torque. According to the assembly requirements of the motor, the motor and the half Between the coupling holes adopt transitional fit, the torque is mainly transmitted by the two M5 set screws fixed on the half coupling. During use, this structure has the following shortcomings:

　　(1) There is a line-to-surface contact between the motor shaft and the set screw, the contact surface is extremely small, and the transmission torque is limited.

　　(2) The threaded connection does not have the anti-loosening function. After several disassembly and long-term operation, the relative rotation and axial movement of the half coupling shaft and the motor shaft will cause the equipment to fail to work.