Mechanical connection structure for detecting dynamic torque by adopting static torque sensor

Abstract

A mechanical connection structure for detecting dynamic torque by adopting a static torque sensor comprises a detected motor, a rotating shaft load regulator and the static torque sensor. The rotating shaft load regulator is installed between the motor and the static torque sensor, and the rotating shaft load regulator, the motor and the static torque sensor are coaxially connected. The mechanical connection structure has the advantages that as a detection shaft of the static torque sensor does not rotate and only twists and deforms, the mechanical connection structure is simple, mature in technology and stable in performance, and the static torque sensor is superior to a dynamic torque sensor of the same grade and the same specification in accuracy and performance stability; accordingly, the accuracy and stability of data detection are improved by adopting the static torque sensor; the rotating speed, detected by the static torque sensor, of the motor is higher than the rotating speed, detected by the dynamic torque sensor, of the motor, and therefore the applicable rotating speed range of the mechanical connection structure is larger; because the price of the static torque sensor is far lower than that of the dynamic torque sensor, the cost for detecting the dynamic torque of the motor or other rotating shaft power machines is lowered.

Description

technical field [0001] The invention relates to the technical field of mechanical torque detection of a rotating shaft, and relates to a mechanical connection structure that uses a static torque sensor to detect dynamic torque. Background technique [0002] See figure 1 , the dynamic torque detection of the motor, including the motor 1 under test, the dynamic torque sensor 2, and the magnetic powder clutch 3. The motor 1 under test is coaxially connected with the dynamic torque sensor 2 and the magnetic powder brake 3 with a shaft coupling. The rotating shaft of the motor 1 drives the dynamic torque sensor 2 and the shaft of the magnetic powder clutch 3 to rotate together, adjusts the working current of the magnetic powder brake 3, and applies a resistance torque to the rotating shaft of the motor 1, and the dynamic torque sensor 2 directly connected with the motor 1 coaxially outputs dynamic torque. The torque detection data is given to the torque display instrument, and ...

AI Technical Summary

Problems solved by technology

It is precisely because of the rotational movement between the resistance strain sensing device on the shaft of the dynamic torque sensor and the power supply and signal output device outside the shaft, which results in the performance of power supply to the resistance strain sensing device and the transmission of torque sensing signals to the outside of the shaft. It is not stable enough, resulting in relatively large differences in the detected torque data in different time periods under the same detection conditions, resulting in inaccurate and stable detection data; the second is due to the need to supply power and The torque sensing signal is transmitted outside the shaft, so that the maximum speed of the dynamic torque sensor shaft is limited, that is, the dynamic torque sensor can only be used for dynamic torque detection of motor shafts with low speeds, and cannot be used for dynamic torque detection of motor shafts with higher speeds. Torque detection; third, the structure of the dynamic torque sensor is complex and the price is high, resulting in high cost of dynamic torque detection of the motor shaft

Images