Recoverable strain gauge installed on steel bridge and provided with protection structure

Abstract

The utility model discloses a recoverable strain gauge installed on a steel bridge and provided with a protection structure. The strain gauge mainly comprises a steel base plate (1), a strain gauge main body (2), a data line (3), a U-shaped sliding seat (4), a bolt (5), a protective cover (6) with a sliding rail and an elastic rubber band (7), and is characterized in that the steel base plate (1) is fixed on a steel bridge through welding, the U-shaped sliding seat (4) is fastened with the steel base plate (1) through the bolt (5), the protective cover (6) with the sliding rail is connected with the U-shaped sliding seat (4) through a groove of the U-shaped sliding seat (4), and the elastic rubber band (7) is fixed on the U-shaped sliding seat (4). And the sliding rail type protective cover (6) is fastened by an elastic rubber band (7) after being mounted in place. The strain gauge has the characteristics that wind and rain erosion is effectively blocked, the service life of the strain gauge is prolonged, and the measurement precision is improved; (2) compared with a traditional strain gauge protection cover, the characteristics of a measurement section are not changed, and the measurement result is more accurate; recycling is convenient, and the construction cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a recoverable strain gauge with a protective structure installed on a steel bridge and belongs to a strain gauge and a protective structure integrated equipment used on a steel bridge. BACKGROUND

[0002] The strain gauge is used for measuring the strain and stress of a steel structure to ensure the safety and controllability of the structure. The traditional strain gauge is directly welded. If the strain gauge is installed when the steel bridge prefabricated component is installed, the strain gauge can be damaged due to transportation and hoisting. In addition, the strain gauge is difficult to weld due to the influence of the anticorrosive paint on the steel structure at the construction site. After the construction is completed, the strain gauge is difficult to recover. Furthermore, the protective structure of the traditional strain gauge is a protective cover which is directly welded on the steel bridge to change the cross-section characteristics and affect the measurement results. Therefore, the recoverable strain gauge with a protective structure is needed. SUMMARY

[0003] In order to solve the problems of the traditional strain gauge and its protective cover, such as difficult welding, difficult installation and difficult recovery, the utility model discloses a recoverable strain gauge with a protective structure installed on a steel bridge. The utility model has the following beneficial effects: ①The steel backing plate can be welded with the steel bridge component when the prefabricated component is installed. Because the component is not painted with anticorrosive paint during the process, the welding is more convenient. In addition, the steel backing plate will not be damaged due to hoisting and transportation. The steel backing plate can also be installed at the steel bridge construction site with high flexibility; ②At the construction site, the equipment can be installed only with a wrench, which is convenient and fast; ③The equipment with the sliding rail type protective cover can be opened at any time to check the state of the strain gauge main body and replace the damaged strain gauge main body in time; ④The protective structure of the equipment can effectively prevent the strain gauge main body from being eroded by wind and rain to improve the measurement accuracy and service life; ⑤Compared with the traditional protective cover which is directly welded on the steel bridge, the protective structure of the equipment will not change the measurement cross-section characteristics and will not affect the measurement results; ⑥After the construction is completed, the equipment can be quickly recovered and recycled.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a recoverable strain gauge with a protective structure installed on a steel bridge mainly comprises a steel backing plate (1), a strain gauge main body (2), a data line (3), a U-shaped sliding seat (4), a bolt (5), a sliding rail type protective cover (6) and an elastic rubber band (7).

[0005] The steel backing plate of the recoverable strain gauge with a protective structure installed on a steel bridge should be pre-punched and threaded. When the steel bridge prefabricated component is installed, the steel backing plate can be welded on the component or welded at the steel bridge construction site.

[0006] The both ends of the strain gauge of the recoverable strain gauge with a protective structure installed on a steel bridge should be pre-punched and threaded. The bolt is inserted into the both ends to fasten the strain gauge on the steel backing plate.

[0007] The slide rail type protective cover is welded by thin steel sheet, and the slide rail is welded on the inner side of the protective cover, the U-shaped slide base is made of solid square steel, and needs to be pre-punched, the hole position is aligned with the hole position of the steel pad, and the two are connected by bolts, the U-shaped slide base is slotted along the side surface, and the size is matched with the inner slide rail of the slide rail type protective cover.

[0008] The left and right slide rail type protective covers are tightened by elastic rubber bands after being installed in place, so that the rigid connection is prevented from changing the cross-section characteristics and affecting the measurement results. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 is an exploded view of the self-protection structure recyclable strain gauge.

[0010] Figure 2 is a perspective view of the self-protection structure recyclable strain gauge.

[0011] Figure 3 is a top view of the U-shaped slide base 4.

[0012] Figure 4 is a side view of the U-shaped slide base 4.

[0013] Figure 5 is a front view of the U-shaped slide base 4.

[0014] Figure 6 is a top view of the slide rail type protective cover 6.

[0015] Figure 7 is a side view of the slide rail type protective cover 6.

[0016] Figure 8 is a front view of the slide rail type protective cover 6.

[0017] In the drawings, 1 is a steel pad, 2 is a strain gauge body, 3 is a data line, 4 is a U-shaped slide base, 5 is a bolt, 6 is a slide rail type protective cover, and 7 is an elastic rubber band. DETAILED DESCRIPTION

[0018] In order to have a deeper understanding of the technical features, purposes and effects of the present application, the specific implementation mode of the present application will be described with reference to the drawings.

[0019] Please refer to the drawings, the utility model example, a kind of recoverable strain gauge with protective structure on steel bridge, including steel backing plate 1, strain gauge main body 2, data line 3, U-shaped slide 4, bolt 5, with slide rail type protective cover 6, elastic rubber band 7.Strain gauge main body 2, data line 3, U-shaped slide 4, bolt 5, with slide rail type protective cover 6, elastic rubber band 7 can be recycled and reused.

[0020] Its specific implementation includes the following steps:

[0021] A steel backing plate 1 is pre-punched and threaded after welding on steel member, strain gauge main body 2 both sides are punched, and connected with steel backing plate by bolt 5.

[0022] B U-shaped slide 4 is pre-punched, and the hole position is aligned with steel backing plate 1, and the two are connected by bolt 5, and U-shaped slide 4 is slotted along its side.

[0023] C with slide rail type protective cover 6 is welded by thin steel sheet, and slide rail is welded on its inner side, the size of slide rail is consistent with the side groove of U-shaped slide 4, and the two are connected.

[0024] D after installation of left and right two sides with slide rail type protective cover 6, it is fastened by elastic rubber band 7, to prevent rigid connection from changing section characteristics, to avoid affecting measurement results.

[0025] In the implementation process, the recoverable strain gauge with protective structure on steel bridge is simple in manufacturing material, convenient in installation process, accurate in measurement data, and is worth popularizing.

[0026] Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A recoverable strain gauge with a protective structure mounted on a steel bridge, mainly composed of a steel pad (1), a strain gauge body (2), a data line (3), a U-shaped slide (4), a bolt (5), a protective cover with sliding rail (6), and an elastic rubber band (7), characterized in that Steel pad (1) is fixed on the steel bridge by welding, U-shaped slide (4) is fastened with steel pad (1) by bolt (5), and slide rail type protective cover (6) is connected with U-shaped slide (4) through the recess of U-shaped slide (4).

2. A strain gauge with protective structure mounted on a steel bridge according to claim 1, characterized in that, U-shaped slide (4) is made of solid square steel, and is slotted along the side surface, and needs to be pre-punched, and the hole position is aligned with the hole position of steel pad (1).

3. A strain gauge with protective structure mounted on a steel bridge according to claim 1, characterized in that, Slide rail type protective cover (6) is welded by thin steel sheet, and the slide rail matched with U-shaped slide (4) is welded at the corresponding position on the inner side.

4. The strain gauge according to claim 1, wherein the strain gauge is installed on a steel bridge and has a protective structure. After the installation of slide rail type protective cover (6) is completed, the elastic rubber band (7) is tightened, the slide rail type protective cover (6) can be opened at any time, and the state of strain gauge body (2) can be checked.

5. The strain gauge according to claim 1, wherein the strain gauge is installed on a steel bridge and has a protective structure. The strain gauge body (2) can be replaced after being damaged by loosening the bolt (5).

6. The strain gauge according to claim 1, wherein the strain gauge is installed on a steel bridge and has a protective structure. The strain gauge body (2), data line (3), U-shaped slide (4), bolt (5), slide rail type protective cover (6) and elastic rubber band (7) can be installed on site, and are convenient and fast.

7. The strain gauge according to claim 1, wherein the strain gauge is installed on a steel bridge and has a protective structure. The strain gauge body (2), data line (3), U-shaped slide (4), bolt (5), slide rail type protective cover (6) and elastic rubber band (7) can be recycled and used repeatedly.

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