In-situ calibration device and method for field torque

Abstract

The invention discloses an in-situ calibration device and method for a field torque. The in-situ calibration device comprises an equal armed lever, two radial bearings, two pure torque radial supporting mechanisms capable of moving opposite and a controllable hydraulic jacking mechanism; the equal armed lever is connected with the pure torque radial supporting mechanisms via the radial bearings and is coaxial with the two pure torque radial supporting mechanisms, a standard torque sensor is arranged between the two pure torque radial supporting mechanisms coaxially, one end of each flexible connecting mechanism is connected with the pure torque radial supporting mechanism via the radial bearing, while the other end is coaxially connected with a field torque measuring end; the controllable hydraulic jacking mechanism is arranged on a bottom plate below any of two arms of the equal armed lever and applies an upward force to the equal armed lever, the torque is transferred to the standard torque sensor, and then the torque value is displayed via a torque measuring instrument. The in-situ calibration device, which is provided with the equal armed lever, the controllable hydraulic jacking mechanism and the pure torque radial supporting mechanisms, is simple in structure and accurate in test data, and can quickly realize the traceability of a measured value.

Description

technical field [0001] The invention relates to an on-site torque in-situ calibration device, which can meet the requirement of a metering technical institution for accurate calibration of the on-site torque. Background technique [0002] At present, domestic on-site torque and speed measuring instruments all use the method of inspection for traceability, and only the 704th Research Institute of China Shipbuilding Industry Corporation has the ability to verify the torque above 5000Nm. Not only disassembly and assembly is troublesome, but also the verification takes too long (usually about 1 month), which affects the normal inspection work of the enterprise. At the same time, disassembly and assembly cause coaxiality deviation, which affects the accuracy of the indication value. [0003] In the prior art, patent CN101216363A discloses a calibration device for a torque measuring instrument, which includes a frame, a force arm and a force arm, one end of the force arm is connec...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems in the prior art that the disassembly and assembly of the torque sensor is troublesome, the coaxiality of the measurement shaft system is affected, the calibration state is inconsistent with the use state, and the accuracy cannot be guaranteed, etc., the present invention further provides a torque sensor that can perform in-situ calibration on the spot. Device and method

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