Jack calibration device and calibration method

Abstract

The invention relates to a jack calibration device comprising two jacks on the left and right, and is characterized in that the jack calibration device further comprises a data exchange box, a first pressure sensor, a second pressure sensor, a first displacement sensor, a second displacement sensor, a first load sensor, a second load sensor, and anchoring blocks and a pressure-receiving device arranged between the two jacks; a third load sensor is mounted inside the pressure-receiving device; and a calibration method has a high degree of intelligence and high technical content. Friction loss coefficients of the two jacks as active and passive ends can be obtained simultaneously by one calibration, and on-site construction needs can be met to guide the construction better. The operation issimple with no need for manual collection and processing of quantities, and the system automatically performs collection and processing. The jack calibration device and calibration method have a highjack calibration speed and a high efficiency, and have high technical, economical and practical guiding significance for the calibration of high-demanding and complex prestressed construction tensionjacks.

Description

technical field [0001] The invention relates to a jack calibration device and a calibration method, especially a jack calibration method using a load sensor, which is suitable for calibration of tension jacks involving prestressed engineering in nuclear power projects, LNG projects, long-span bridges and civil construction industries, and belongs to construction The field of construction technology. Background technique [0002] The traditional calibration method for tension jacks is to install the inspection oil pressure gauge on the oil pump of the jack, perform calibration on the testing machine, record the readings (KN) of the dial of the testing machine and the readings (MPa) of the corresponding jack oil gauge one by one, and sort them out The readings of the dial of the testing machine and the oil gauge of the jack form the curve and linear equation of KN-MPa. The operation process of the calibration method of the above-mentioned jack is simple, and the calibration r...

AI Technical Summary

Problems solved by technology

The operation process of the calibration method of the above-mentioned jack is simple, and the calibration results can meet the general calibration of jacks involved in tensioning construction, but in high-demand and more complex tensioning construction, the calibration results of the above-mentioned jacks are difficult to meet the requirements, and there is no result in the calibration report. The friction loss coefficient inside the jack (including the friction loss coefficient of the active end and the passive end), and the intelligent operation degree and technical content of this calibration method are relatively low

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