Rotary inserting buckle for overhead working truck

A plug comprises a plug main body and a connecting part connected with the plug main body, stop parts are symmetrically arranged at one end, far away from the plug main body, of the connecting part, a jack and a mounting hole are formed in a socket, the jack is communicated with the surface of the socket, the jack is communicated with the mounting hole, and the mounting hole is communicated with the plug main body. The side wall of the mounting hole is provided with a top block, an elastic piece and a detection element, the detection element is fixed on the side wall of the mounting hole, one end of the elastic piece is propped against the detection end of the detection element, the other end of the elastic piece is connected with the top block, and the shape of the jack is matched with the shape of one end of the plug provided with the stop part. The end, provided with the stop part, of the plug penetrates through the insertion hole to be inserted into the installation hole, then can be clamped in the instal