Motor anti-loosening device of high-speed bar double-length shear switch

The utility model discloses a high-speed bar double-length shear switch motor anti-loosening device which comprises a horizontally-arranged supporting plate supporting the tail of a motor, a side edge plate is arranged on the side face of the supporting plate, and the bottom of the supporting plate is connected to a base on the ground through a vertically-arranged lead screw. A cylinder with threads is vertically arranged on the base and connected with the bottom of the lead screw in a matched mode, the top of the lead screw is smooth and inserted into a sleeve at the bottom of the supporting plate, and a nut used for driving the lead screw to rotate so as to adjust the height of the supporting plate is fixedly arranged on the lead screw. Compared with the prior art, the problem that the yield and the service life of related equipment are affected due to the fact that a motor of an existing high-speed bar double-length shear switch is easy to loosen can be solved. 本实用新型公开了一种高速棒材倍尺剪转辙器电机防松装置，包括托住电机尾部的水平设置的支撑板，