Tail cover device of electric connector

The utility model relates to an adjustable rapid installation electric connector tail cover device, which is suitable for the field of machinery. An existing circular electric connector tail cover is manually installed, the tightening force cannot be measured and calculated, and the problem that the tail cover is too loose or too tight easily occurs. Comprising a mounting base, a connecting block, a movable guide rail, a movable sliding block and an electric connector, a base mounting hole and a threaded hole are formed in the mounting base, and the bottom of the connecting block is connected with the mounting base through the threaded hole; two ends of the connecting block are connected with movable guide rails; the movable sliding block moves on the movable guide rail and is provided with a cylindrical pin and a limiting groove, the limiting groove and the cylindrical pin can fix a flange plate on the connector to the device, then a torque wrench is used for tightening a tail cover of the connector, and the