Direct-measuring-type torque signal measuring device

The invention relates a torque signal obtaining device, in particular to a direct-measuring-type torque signal measuring device which is used for an upper-rotation and level-luffing tower crane. The direct-measuring-type torque signal measuring device comprises a gravity sensor, a connecting screw rod, a front support seat, a back support seat and a nut, wherein the front support seat and the back support seat are welded on a to-be-measured stressed rod part, and the gravity sensor is arranged on the front support seat and the back support seat; the direct-measuring-type torque signal measuring device is characterized in that one end of the gravity sensor is provided with a lug plate, the lug plate is connected with a connecting plate, the connecting plate is connected with the back support seat, the other end of the gravity sensor is provided with a threaded hole, the connecting screw rod is arranged in the threaded hole, and the connecting screw rod and the front support seat are connected and fixed through the nut. The direct-measuring-type torque signal measuring device has reasonable structural design, accurate measurement, small volume and high stability and can realize the accurate adjustment within a small range without debugging and correcting the torque signal often.