Torque conversion device

The invention belongs to the technical field of torque conversion sliding tables, and discloses a torque conversion device. The device comprises a shell, and a connecting cross rod is arranged in the shell; the torque changing device further comprises first suction components and second suction components, the first suction components and the second suction components are connected to the connecting transverse rod in an inserted mode, the second suction components are inserted between the first suction components, and every two adjacent first suction components are connected through a first spring. Every two adjacent first suction component and second suction component are rotationally connected through a connecting rod, and the connecting rods are the same in length. An air cylinder is erected on the outer side of the shell, a telescopic rod is installed in the air cylinder and connected with the first suction component located at the foremost end in the sliding direction, and the air cylinder drives the fir