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Clamp ring type torque sensor

A torque sensor and clamp ring technology, applied in the field of fast-installed torque sensors, can solve the problems of large measurement error, long waiting time for shutdown, poor stability, etc., achieve measurement accuracy and stability assurance, improve reliability, and ensure stability sexual effect

Inactive Publication Date: 2006-03-29
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many types of torque sensors, but they will put forward various requirements for the use environment, drive shaft structure, size, material, installation conditions, etc., and are suitable for different applications; when used in industries with harsh environments On-site, and it is not allowed to modify the existing equipment, the known better method is to paste resistance strain gauges on the transmission shaft to form an electric bridge, that is, to use the transmission shaft as an elastic body, and construct a resistance-strain type torque sensor on site to measure Take the torque of the transmission shaft; but this method requires a professional on-site operation, so the waiting time for the shutdown is longer, and due to the environment, adhesive, pasting process, etc., the stability is poor in long-term use, and the measurement error will become more and more Big

Method used

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  • Clamp ring type torque sensor

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Embodiment Construction

[0009] In the laboratory environment, the resistance strain gauge (2) is pasted on the elastic body (3) of the clamp ring torque sensor, and the necessary bridging, compensation, protection and calibration are carried out to make the clamp ring torque sensor; (4), the nut (5) clamps the clamp ring type torque sensor on the transmission shaft (1), and exerts a clamping force as large as possible. In order to prevent the bolts and nuts from loosening during long-term use, the nut (5) adopts anti- Loose nuts, which can be welded firmly with the bolts if necessary; the sharp-toothed contact surfaces at both ends of the sensor, under the action of clamping force, "mesh" with the surface of the drive shaft. When a torque acts on the drive shaft, the torque makes the sensor The cross-section of the transmission shaft corresponding to both ends produces a relative torsion angle, and the "meshing" surface of the transmission shaft / sensor transmits this relative torsion angle to the sens...

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Abstract

The present invention relates to a clamp ring type torque sensor for obtaining drive shaft torque. Said sensor adopts semi-ring design, and said sensor can be quickly clamp-mounted on the drive shaft only by utilizing holt and nut. When the torque is received by drive shaft, the shearing deformation which is directly proportional to the torque on the drive shaft can be transferred to the sensor elastic body on which a strain foil is stuck so as to obtain the torque signal of said drive shaft. Said invention also provides the design method of said sensor elastic body.

Description

Technical field [0001] The invention relates to a sensor for measuring the torque of a transmission shaft, which is a torque sensor designed according to the measurement principle of a resistance strain gauge and capable of fast installation. Background technique [0002] At present, there are many types of torque sensors, but they will put forward various requirements for the use environment, drive shaft structure, size, material, installation conditions, etc., and are suitable for different applications; when used in industries with harsh environments On-site, and it is not allowed to modify the existing equipment, the known better method is to paste resistance strain gauges on the transmission shaft to form an electric bridge, that is, to use the transmission shaft as an elastic body, and construct a resistance-strain type torque sensor on site to measure Take the torque of the transmission shaft; but this method requires a professional on-site operation, so the waiting t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/00
Inventor 吴伯农孟荣光
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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