Connecting device

The invention provides a connecting device, and aims to solve the problems that in the prior art, a transport vehicle and a transport article are inconvenient to fix, and the connecting device is not suitable for transporting various articles in the transport process. The connecting device comprises a mounting seat which is connected with a transportation device; one end of the limiting stopper is hinged with the mounting seat; one end of the buffer is hinged with the other end of the limiter; one end of the bent arm is hinged with the other end of the buffer; one end of the handle is hinged with the other end of the bent arm; one end of the hook is hinged with the handle; wherein the axes of all the hinge points are parallel to one another, and after the axes of the hinge positions of the bent arm, the handle and the hook are located on the same plane, the buffer shrinks, so that the bent arm and the handle are in contact, and locking is completed. One end of the connecting piece is connected through the scr