Coupling torsion detection device

The utility model discloses a coupler torsion detection device which comprises a base, a torsion detector is fixedly installed on one side of the base, a fixing block is fixedly installed on the other side of the base, a groove is formed in the fixing block, a through groove is formed in one side of the groove, a first threaded rod is arranged in the groove in a penetrating mode, and a second threaded rod is arranged in the through groove in a penetrating mode. A sliding block is arranged on the first threaded rod, one side of the sliding block penetrates through the through groove, a moving plate is fixedly connected to one side of the sliding block, a servo motor is installed at the lower end of the moving plate, the output end of the servo motor is connected with a connecting rod through a coupler, and a first clamp is fixedly connected to the lower end of the connecting rod; a supporting block is fixedly installed at the upper end of the base, a second clamp is fixedly installed at the upper end of the su