Robot joint torque calibration platform

The invention discloses a robot joint torque calibration platform which comprises a lever which is arranged in the horizontal direction and can rotate along a rotating center located in the middle of the lever and arranged in the vertical direction, and the end of each of the two ends of the lever is provided with an arc face extending in the vertical direction; each cambered surface of the lever is connected with one plate-shaped structure, and the plate-shaped structures extend in the tangential direction of the horizontal direction of the cambered surfaces; fixed pulleys are respectively arranged on two sides of the fixed pulley and the lever; the two sides of the lever are respectively provided with one connecting rope, one end of each connecting rope is connected with the plate-shaped structure, the other end of each connecting rope is connected with the balancing weight, and the middle of each connecting rope is arranged on the fixed pulley. According to the simple torque calibration system disclosed by