A tension machine for adjusting the tension of sensing optical cable

Abstract

The invention discloses a tension machine for adjusting the tension of a sensing optical cable, which relates to the technical field of sensing optical cable installation, and comprises a frame, which is a box structure or a frame structure, and a tension meter, a tension gauge, and a tension gauge are installed on the frame. Pulley and a plurality of winding wheels, tensioning wheel and a plurality of winding wheels are jointly wound with a stay rope, and one end of the stay rope is fixed with the tension gauge; a linear drive for driving the movement of the tensioning pulley is also installed on the frame structure. The invention can flexibly apply prestress to the sensing optical cable while ensuring that the prestress value applied along the sensing optical cable remains consistent.

Description

technical field [0001] The invention relates to the technical field of installation of sensing optical cables, in particular to a tensioning machine for adjusting the tension of sensing optical cables. Background technique [0002] Due to its own particularity, underground tunnels will be affected by various factors such as geology, terrain, and climatic conditions during construction and operation. Therefore, in order to ensure the safe use of engineering facilities, safety monitoring of the tunnel structure in operation is carried out. , it is necessary to ensure the safety of the main structure. The existing tunnel structure health monitoring technology has the following shortcomings: (1) All of them are arranged in points, and the layout is often random, and the most dangerous places may often be missed; (2) The survival rate is low, and in some harsh environments In the geotechnical environment, it is easy to be damaged by the environment and lose its effectiveness; (3...

AI Technical Summary

Problems solved by technology

Existing health monitoring technologies for tunnel structures have the following deficiencies: (1) they are all point-type layouts, which are often random, and the most dangerous places may often be missed; (2) the survival rate is low, and in some harsh In the rock and soil environment, it is easily damaged by the environment and loses its effectiveness; (3) the degree of real-time, parallel and automatic monitoring is not high; (4) there is a lack of long-distance and large-area monitoring technology

[0004] Generally speaking, if the fiber is not pre-stretched, the fiber segment between the two fixed points is in a relaxed state; when the structure is deformed, although the fiber is stretched with the deformation of the structure, it is still possible In a state of relaxation and no stress change, the fiber optic strain instrument cannot normally capture the strain value of the structure or capture the incomplete strain value

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