Device for measuring creep deformation of eddy current

Abstract

The invention discloses a device for measuring creep deformation of eddy current. The device comprises an eddy current displacement sensor device and a bracket, wherein the eddy current sensor device comprises a data acquisition display, a sensor extension cable, a sensor probe and a sensor probe fixing screw; the bracket comprises a sensor probe bracket and a target board bracket; two longitudinal and transverse reinforcing plates are arranged in each bracket; two bolt holes for fixing the brackets are formed; a sensor probe mounting hole is formed in the upper end of a sensor bracket board; the sensor probe bracket and the target board bracket are provided with a sensor bracket fixing bolt and a target bracket fixing bolt; each bolt is provided with a bolt washer. The device can be used for testing data accurately, efficiently and conveniently, and is convenient and rapid for mounting.

Description

technical field [0001] The invention relates to the field of electronic inductance and building materials, in particular to an eddy current creep deformation measurement device. Background technique [0002] The eddy current displacement sensor is widely used in electric power, electronics, petroleum, chemical industry, metallurgy, construction, building materials and other industries due to its good reliability, wide measurement range, high measurement sensitivity and high measurement accuracy. The monitoring of the displacement of large rotating machinery bearings and the shrinkage of concrete building materials plays an important role. [0003] Concrete is one of the main building materials of buildings, and its performance is closely related to the life and safety of buildings. As one of the important indicators for the long-term and durability evaluation of concrete materials, compression creep has a significant impact on the design of buildings and the evaluation of ...

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Problems solved by technology

[0004] Existing technology, the deformation measurement device used in conjunction with the spring compression creep meter in the test method GB / T 50082-2009 "Standard for Test Methods of Long-term Performance and Durability of Ordinary Concrete", usually uses a differential strain gauge or a steel string strain gauge The built-in deformation measurement devices such as gauges, or the external strain measurement devices bonded with brackets or the attached contact extensometer measurement devices, etc., their disadvantages are: the use of embedded test devices is expensive, and the service life of the strain gauge is relatively long. Short; while the externally mounted bonded or attached deformation measuring device has poor positioning accuracy and poor firmness after positioning, etc.

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