Unidirectional force monitoring apparatus and monitoring method

Abstract

The invention discloses a unidirectional force monitoring apparatus and a monitoring method, and belongs to the technical field of sensing. The apparatus comprises a housing, the housing is of a step annular structure, the outer rim of the inner side of the housing is provided with a projection, the housing comprises an upper housing and a lower housing, the upper housing and the lower housing are symmetrically arranged at an upper position and a lower position, the two step rings of the housing form a groove, a supporting body is arranged inside a cavity formed by buckling the upper housing and the lower housing, the supporting body is of a cylinder structure which is hollow inside, the positions, which are in contact with the supporting body, of the upper housing and the lower housing are each provided with an elastic cushion, the outer side of the supporting body is successively provided with a reflection layer and a variable color ring which are disposed between the upper housing and the lower housing, the variable color ring is of a cylinder structure which is hollow inside, and a polaroid is arranged at the outer side of the variable ring. According to the invention, uniform pressure generated by a uniform load mechanism is converted into different colors through a display apparatus, and a unidirectional force is determined through observing the different colors of the display apparatus. The apparatus and method provided by the invention have great significance on construction quality management and safe production of a bolt fastening structure and anchor pole support project.

Description

technical field [0001] The invention relates to a unidirectional force monitoring device and a monitoring method, which belong to the field of sensing technology. Background technique [0002] There are many occasions in engineering that need to monitor or display unidirectional force, such as bolt fastening force in important occasions, anchor rod or anchor cable axial force in geotechnical engineering. It is very important to display these forces timely and accurately for the safety of engineering facilities. There are two types of traditional unidirectional force monitoring devices. One uses a power source, such as a strain gauge type, which uses the strain of the anchor rod to detect the stress of the anchor rod. However, due to the need for a power source, the safety management is complicated. The other type does not require power supply, there are hydraulic type and pressure sensitive paper type. The hydraulic type is composed of a hydraulic pressure box and a pressur...

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Problems solved by technology

[0004] Chinese patent CN203452813U discloses a scheme for judging the axial force by observing the displacement of the high-strength spring, but because the displacement is too small, it is very difficult to judge the axial force of the bolt directly by visually observing the amount of deformation

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