Infrared torque measurer

The utility model relates to an infrared type torque measuring instrument, and is characterized in that a rotating axle concentric with a rotating component to be measured is fixed on the rotating component to be measured, a power electrical brush and a emitting circuit on the an axle are fixed on the rotating axle, the output of a strain sensing element on the rotating component to be measured is connected with the emitting circuit on the axle, the signal sent from the emitting circuit on the axle on the rotating axle is received by a receiving circuit, and the output of the receiving circuit is connected with a computer or a display device. Because the utility model adopts the infrared transferring method to perform transmission of the straining signal on the rotating component, the signal is received by photo rectifiers on a still object, and sent to a PC to perform the signal disposal, to obtain the measure result, and when the utility model is used in toque measure, the error is small, and the data accuracy is high.