Connecting mechanism beneficial to butt joint of trolleys

The utility model aims to provide the connecting mechanism beneficial to trolley butt joint, which is convenient to operate, good in positioning and butt joint effects and lower in cost. The connecting assembly is arranged at the butt joint end of the trolley, the hand brake assembly is arranged at the control end of the trolley, the connecting assembly comprises a clamping hook mounting seat, a rotating shaft, a clamping hook and a torsional spring, and the clamping hook is hinged to the clamping hook mounting seat through the rotating shaft. The torsion spring is connected to the rotating shaft in a sleeving mode, the two acting ends of the torsion spring are matched with the clamping hook and the clamping hook installation base respectively, the clamping hook is matched with a clamping block arranged at the butt joint end of a wire body, a brake cable connected with the hand brake assembly is arranged at the lower end of the clamping hook, and the hand brake assembly controls the clamping hook through the