Strain gauge relating to steel cable strain measurement

Abstract

The utility model discloses a strain gauge relating to steel cable strain measurement, which comprises a steel cable body, two sides of the upper part of the steel cable body are respectively provided with an upper clamping plate, two sides of the lower part of the steel cable body are respectively provided with a lower clamping plate, and the upper clamping plates and the lower clamping plates are fastened through a fixing mechanism. And the upper clamping plate and the lower clamping plate are fixed on the surface of the steel cable body, after fixation, if the steel cable body deforms, the upper clamping plate and the lower clamping plate on the two sides can be driven to move, at the moment, the detection resistor also deforms, the resistance changes after the detection resistor deforms, and then the effect of conducting strain measurement on the steel cable is achieved.

Description

Technical Field

[0001] This utility model relates to the field of steel cable strain measurement, specifically a strain gauge for steel cable strain measurement. Background Technology

[0002] In the field of building engineering, strain gauges, as the core components for monitoring structural stress and deformation, are widely used in the health monitoring of the main structure of buildings. Traditional strain gauges are attached or embedded in the surface or interior of concrete, steel structures, etc., and can effectively capture linear strain data of the structure under load, providing key basis for building safety assessment.

[0003] Existing strain gauges have significant limitations in application scenarios. For flexible load-bearing components such as steel cables commonly used in engineering projects such as bridges and long-span spatial structures, traditional strain gauges are difficult to directly adapt to the curved surface shape and dynamic stress characteristics of steel cables due to limitations in structural design and installation methods. As a tension member, the strain distribution of steel cables is characterized by concentration along the axial direction and large changes in surface curvature. Traditional planar bonded strain gauges cannot closely fit the curved surface of the steel cable, which can easily lead to distortion of measurement data. Therefore, it is necessary to design a strain gauge that involves the measurement of steel cable strain to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a strain gauge for measuring the strain of steel cables, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a strain gauge relating to steel cable strain measurement, comprising a steel cable body, upper clamping plates provided on both sides above the steel cable body, and lower clamping plates provided on both sides below the steel cable body, wherein the upper clamping plates and the lower clamping plates are fastened together by a fixing mechanism.

[0006] Preferably, detection resistors are fixedly installed on the surfaces of the upper and lower clamping plates by openings. The front ends of the two detection resistors pass through the upper and lower clamping plates respectively and extend to the outside of the upper and lower clamping plates respectively. Detection wires are fixedly installed on the front ends of the detection resistors.

[0007] Preferably, the fixing mechanism includes through holes formed at the top of the upper clamping plate and the lower clamping plate, and a bolt is slidably connected inside the upper through hole, the bottom end of the bolt passing through the lower clamping plate and extending to the outside of the lower clamping plate.

[0008] Preferably, a nut is threaded onto the surface of the bolt and below the lower clamping plate.

[0009] Preferably, a second anti-slip pad that works in conjunction with the steel cable body is fixedly installed on the inner side of the upper clamping plate.

[0010] Preferably, a first anti-slip pad that works in conjunction with the steel cable body is fixedly installed on the inner side of the lower clamping plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The strain gauge involved in steel cable strain measurement is provided by setting an upper clamp and a lower clamp, and fixing the upper clamp and the lower clamp to the surface of the steel cable body. After fixing, if the steel cable body deforms, it can drive the upper clamp and the lower clamp on both sides to move. At this time, the detection resistor can also deform. After the detection resistor deforms, the resistance changes, thereby achieving the effect of strain measurement of the steel cable.

[0013] 2. The strain gauge involved in measuring the strain of the steel cable, by setting bolts and nuts, allows the upper and lower clamping plates to be fastened to the surface of the steel cable body. After the upper and lower clamping plates are in contact with the steel cable body, the first and second anti-slip pads can prevent the upper and lower clamping plates from sliding with the steel cable body, thereby improving the stability after the upper and lower clamping plates are fixed. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a side view of the internal structure of the upper and lower clamping plates of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the nut, the first anti-slip pad, and the second anti-slip pad of this utility model.

[0017] In the diagram: 1. Steel cable body; 2. Upper clamping plate; 3. Lower clamping plate; 4. Detection resistor; 5. Detection line; 6. Through hole; 7. Bolt; 8. Nut; 9. First anti-slip pad; 10. Second anti-slip pad. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1

[0020] Please refer to Figure 1-3As shown, this utility model provides a strain gauge for measuring the strain of a steel cable, including a steel cable body 1, upper clamping plates 2 are provided on both sides above the steel cable body 1, and lower clamping plates 3 are provided on both sides below the steel cable body 1. The upper clamping plates 2 and the lower clamping plates 3 are fastened together by a fixing mechanism.

[0021] Specifically, detection resistors 4 are fixedly installed on the surfaces of the upper clamping plate 2 and the lower clamping plate 3 through openings. The front ends of the two detection resistors 4 pass through the upper clamping plate 2 and the lower clamping plate 3 respectively and extend to the outside of the upper clamping plate 2 and the lower clamping plate 3 respectively. Detection lines 5 are fixedly installed on the front ends of the detection resistors 4. By setting up the upper clamping plate 2 and the lower clamping plate 3 and fixing the upper clamping plate 2 and the lower clamping plate 3 to the surface of the steel cable body 1, if the steel cable body 1 deforms after fixing, it can drive the upper clamping plate 2 and the lower clamping plate 3 on both sides to move. At this time, the detection resistors 4 can also deform. After the detection resistors 4 deform, their resistance changes, thereby achieving the effect of strain measurement of the steel cable.

[0022] Specifically, the fixing mechanism includes through holes 6 opened at the top of the upper clamping plate 2 and the lower clamping plate 3. A bolt 7 is slidably connected inside the upper through hole 6. The bottom end of the bolt 7 passes through the lower clamping plate 3 and extends to the outside of the lower clamping plate 3. A nut 8 is threadedly connected to the surface of the bolt 7 and located below the lower clamping plate 3. A second anti-slip pad 10 that cooperates with the steel cable body 1 is fixedly installed on the inner side of the upper clamping plate 2. A first anti-slip pad 9 that cooperates with the steel cable body 1 is fixedly installed on the inner side of the lower clamping plate 3. By setting the bolt 7 and the nut 8, the upper clamping plate 2 and the lower clamping plate 3 can be fastened to the surface of the steel cable body 1 by the bolt 7 and the nut 8. After the upper clamping plate 2 and the lower clamping plate 3 are attached to the steel cable body 1, the first anti-slip pad 9 and the second anti-slip pad 10 can prevent the upper clamping plate 2 and the lower clamping plate 3 from sliding with the steel cable body 1, thereby improving the stability of the upper clamping plate 2 and the lower clamping plate 3 after fixing.

[0023] Working principle: This utility model relates to a strain gauge for measuring the strain of steel cables. By setting an upper clamping plate 2 and a lower clamping plate 3, and fixing the upper clamping plate 2 and the lower clamping plate 3 to the surface of the steel cable body 1, if the steel cable body 1 deforms after fixing, it can drive the upper clamping plate 2 and the lower clamping plate 3 on both sides to move. At this time, the detection resistor 4 can also deform. After the detection resistor 4 deforms, its resistance changes, thereby achieving the effect of measuring the strain of the steel cable. At the same time, by setting bolts 7 and nuts 8, the upper clamping plate 2 and the lower clamping plate 3 can be fastened to the surface of the steel cable body 1. After the upper clamping plate 2 and the lower clamping plate 3 are in contact with the steel cable body 1, the first anti-slip pad 9 and the second anti-slip pad 10 can prevent the upper clamping plate 2 and the lower clamping plate 3 from sliding with the steel cable body 1, thereby improving the stability after fixing the upper clamping plate 2 and the lower clamping plate 3.

[0024] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A strain gauge involving a wire strain measurement, comprising a wire body (1), characterized in that: The upper clamping plate (2) is arranged on both sides of the steel cable body (1), the lower clamping plate (3) is arranged on both sides of the lower side of the steel cable body (1), and the upper clamping plate (2) and the lower clamping plate (3) are fastened through a fixing mechanism.

2. A strain gauge involving measurement of strain in a wire rope according to claim 1, characterized in that: The surfaces of the upper clamping plate (2) and the lower clamping plate (3) are fixedly installed with detection resistors (4) through openings, the front ends of the two detection resistors (4) respectively penetrate the upper clamping plate (2) and the lower clamping plate (3) and respectively extend to the outside of the upper clamping plate (2) and the lower clamping plate (3), and the front ends of the detection resistors (4) are fixedly installed with detection lines (5).

3. A strain gauge involving measurement of strain in a wire cable as claimed in claim 1, wherein: The fixing mechanism comprises through holes (6) arranged at the top of the upper clamping plate (2) and the lower clamping plate (3), and a bolt (7) is slidably connected to the inside of the through hole (6) on the upper side.

4. A strain gauge involving measurement of strain in a wire cable according to claim 3, characterized in that: The surface of the bolt (7) and below the lower clamping plate (3) are threadedly connected with a nut (8).

5. A strain gauge involving measurement of strain in a wire cable as claimed in claim 1, wherein: The inner side of the upper clamping plate (2) is fixedly installed with a second anti-skid pad (10) used in cooperation with the steel cable body (1).

6. A strain gauge involving measurement of strain in a wire cable as claimed in claim 1, wherein: The inner side of the lower clamping plate (3) is fixedly installed with a first anti-skid pad (9) used in cooperation with the steel cable body (1).

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