Torque measuring instrument

The invention discloses a torque measuring instrument which comprises a flat plate, a transmission part plate is arranged on one side of the top end of the flat plate, a first supporting frame is arranged on one side of the top end of the transmission part plate, a driving motor is fixedly inserted into the upper portion of the first supporting frame, and a second supporting frame is arranged in the middle of the top end of the transmission part plate. A torque sensor is fixedly installed at the top end of the second supporting frame, a guide sliding block is arranged on the side, away from the first supporting frame, of the top end of the transmission part plate, a supporting bearing seat is arranged at the top end of the guide sliding block, and a supporting bearing is fixedly clamped to the upper portion of the supporting bearing seat. According to the invention, the center of the test bearing and the center of the supporting bearing can be conveniently kept consistent, when adjustment is not aligned, misa