Speed reduction structure of three-phase asynchronous motor

The utility model discloses a speed reduction structure of a three-phase asynchronous motor, which comprises a speed reducer box body, a dismounting assembly is arranged on the outer side of the speed reducer box body, a heat dissipation filtering assembly is arranged below the dismounting assembly, and a pop-up assembly is arranged at the top end of the speed reducer box body. The dismounting assembly comprises placing grooves formed in the two sides of the top end of the reducer box body, clamping grooves are formed in the two sides of one end of the inner side of each placing groove, a second through hole is formed in one end of the outer side of each placing groove in a penetrating mode, a clamping column is arranged on the inner wall of each second through hole, and one end of the outer side of each clamping column is fixedly connected with a connecting plate. One end of the inner side of the connecting plate is fixedly connected with a tension spring, and one end of the inner side of the tension spring