CN218865018U

CN218865018U - Bridge detection device based on optical fiber

Info

Publication number: CN218865018U
Application number: CN202223597664.XU
Authority: CN
Inventors: 陈凯
Original assignee: Jiangsu Guangwei Sensing Equipment Co ltd
Current assignee: Jiangsu Guangwei Sensing Equipment Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-04-14
Anticipated expiration: 2032-12-29

Abstract

The embodiment of the utility model discloses bridge detection device based on optic fibre relates to optical fiber detection technical field, bridge detection device based on optic fibre includes: the first optical fiber (10) is arranged at the position to be detected of the bridge; the optical fiber traction device comprises a gear transmission part (20), a first optical fiber (10) is wound on one side of the gear transmission part (20), a second optical fiber (30) is connected with the first optical fiber (10) through the gear transmission part (20), and the gear transmission part (20) is used for transmitting the traction force of the first optical fiber (10) to the second optical fiber (30); the second optical fiber (30) is wound on the opposite side of the first optical fiber (10) through the gear transmission component (20), and the second optical fiber (30) is connected with the optical fiber detection device (40). The optical fiber is adopted to replace the existing electronic sensor, so that the corrosion and the damage caused by a humid environment can be effectively avoided, and meanwhile, the gear transmission component is adopted, so that the deformation quantity can be greatly amplified, and the detection sensitivity and the accuracy are improved.

Description

Bridge detection device based on optical fiber

Technical Field

The utility model relates to an optical fiber detection technical field specifically relates to a bridge detection device based on optic fibre.

Background

In order to meet the requirement that people cross obstacles (such as rivers) in life, various roads exist, and the bridges are often arranged, so that whether the bridges are normally used or not is related to the travel safety of people.

In the daily use process, the safety of the bridge needs to be detected, for example, the structural health of places such as underground pipe gallery tunnels of the bridge needs to be detected, and once the bridge is found to have structural change or deformation, corresponding remedial measures or safety protection measures need to be taken immediately to prevent safety accidents or prolong the service life of the bridge.

In the existing detection method, an electronic sensor is generally adopted for detection, however, the detection position is often located underground, at the lower part of a bridge and the like, and is in a wet state all the year round, so that the electronic sensor is easily damaged, and the existing detection method cannot meet the actual requirements because the existing electronic sensor has high protection level and high cost.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned technical problem that exists among the prior art, the embodiment of the utility model provides a bridge detection device based on optic fibre through adopting the current electronic sensor of optic fibre replacement, can effectively avoid the corruption and the damage that humid environment caused, adopts gear drive part simultaneously, can enlarge deformation volume greatly to improve detectivity and accuracy nature.

In order to achieve the above object, an embodiment of the present invention provides a bridge detection device based on optical fiber, the bridge detection device based on optical fiber includes: the first optical fiber is arranged at the position to be detected of the bridge; a gear transmission part through which a first optical fiber is wound and a second optical fiber is linked with the first optical fiber, the gear transmission part being used to transmit a traction force of the first optical fiber to the second optical fiber; the second optical fiber is wound through the gear transmission component and is opposite to the first optical fiber, and the second optical fiber is connected with an optical fiber detection device.

Preferably, the first optical fiber is a tight-buffered optical fiber.

Preferably, the gear transmission member includes a body, and a first concave wheel disposed at one side of the body and a second concave wheel disposed at an opposite side of the body from the first concave wheel, the first optical fiber is wound through the first concave wheel, the second optical fiber is wound through the second concave wheel, and the body includes a gear transmission structure.

Preferably, the gear transmission structure comprises a first gear, a first shaft, a second gear, a second shaft, a third gear and a third shaft, wherein the first shaft and the second shaft penetrate through the center of the first gear, the second gear penetrates through the center of the second gear, the third shaft penetrates through the center of the third gear, the first shaft further penetrates through the center of the first concave gear, and the first gear, the second gear and the third gear are in gear joint in sequence.

Preferably, the gear ratio of the gear transmission structure is 1.

Preferably, the optical fiber detection device is an optical time domain reflectometer.

Preferably, the optical time domain reflectometer is FS790.

Through the technical scheme provided by the utility model, the utility model discloses following technological effect has at least:

by improving the existing detection medium and replacing the electronic sensor by adopting the optical fiber which can not be corroded and damaged by the humid environment, the corrosion or damage of the humid environment in a bridge or a tunnel to the detection medium is effectively avoided; on the other hand, the gear transmission component is adopted to amplify the fine deformation of the bridge or the tunnel, so that the fine deformation of the bridge or the tunnel can be accurately detected, and the detection sensitivity and the accuracy are greatly improved.

Other features and advantages of embodiments of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention, but do not constitute a limitation of the embodiments of the invention. In the drawings:

fig. 1 is a schematic structural diagram of a bridge inspection device based on optical fibers according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a gear transmission part in the bridge inspection device based on optical fiber according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a gear transmission structure in a bridge detection device based on optical fibers according to an embodiment of the present invention.

Description of the reference numerals

10 first optical fiber 20 gear transmission part

201 body 202 first concave wheel

203 second concave wheel 204 gear transmission structure

2041 first toothed wheel 2042 first shaft

2043 second Gear 2044 second shaft

2045 third Gear 2046 second shaft

30 second optical fiber 40 optical fiber detection device

Detailed Description

The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description herein is only intended to illustrate and explain embodiments of the present invention, and is not intended to limit embodiments of the present invention.

The terms "system" and "network" in the embodiments of the present invention may be used interchangeably. The term "plurality" means two or more, and in view of this, the term "plurality" may also be understood as "at least two" in the embodiments of the present invention. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and succeeding related objects are in an "or" relationship, unless otherwise specified. In addition, it should be understood that the terms "first," "second," and the like in the description of the embodiments of the present invention are used for distinguishing between descriptions and not necessarily for describing a sequential or chronological order, unless otherwise indicated.

Referring to fig. 1, an embodiment of the present invention provides an optical fiber-based bridge detecting device, which includes: the first optical fiber 10 is arranged at a position to be detected of the bridge; a gear transmission member 20 through which a first optical fiber 10 is wound through one side of the gear transmission member 20, a second optical fiber 30 linked with the first optical fiber 10 through the gear transmission member 20, the gear transmission member 20 for transmitting a drawing force of the first optical fiber 10 to the second optical fiber 30; the second optical fiber 30 is wound through the gear transmission part 20 and opposite to the first optical fiber 10, and the second optical fiber 30 is connected with the optical fiber detection device 40.

In a possible embodiment, during the monitoring process of the bridge or the low tunnel, the existing electronic sensing device is replaced by an optical fiber, for example, in the embodiment of the present invention, the first optical fiber 10 is used as the detection medium, the first optical fiber 10 is wound through one side of the specially prepared gear transmission part 20, for example, one side of the gear transmission part 20 is provided with a pulley, the first optical fiber 10 is wound through the groove of the pulley to be synchronously connected with the gear transmission part 20, during the use process, the first optical fiber 10 is subjected to the action force of the bridge or the tunnel to be displaced, and further the action force is transmitted to the pulley of the gear transmission part 20.

In order to improve the accuracy of detection, avoid the detection deviation because of the deformation or the displacement of optic fibre itself leads to, preferably, in the embodiment of the utility model provides an, first optic fibre 10 is tight set optic fibre, and the displacement that takes place from this first optic fibre all has the deformation in bridge or tunnel to cause.

Referring to fig. 2, in the embodiment of the present invention, the gear transmission component includes a body 201, a first concave wheel 202 disposed on one side of the body 201, and a second concave wheel 203 disposed on the opposite side of the body from the first concave wheel 202, the first optical fiber 10 is wound around the first concave wheel 202, the second optical fiber 30 is wound around the second concave wheel 203, and the body 201 includes a gear transmission structure 204.

Further, referring to fig. 3, in the embodiment of the present invention, the gear transmission structure 204 includes a first gear 2041, a first shaft 2042 and a second gear 2043 which pass through the center of the first gear 2041, a second shaft 2044 and a third gear 2045 which pass through the center of the second gear 2043, and a third shaft 2046 which passes through the center of the third gear 2045, wherein the first shaft 2042 further passes through the center of the first concave wheel 202, the third shaft 2046 further passes through the center of the second concave wheel 203, and the first gear 2041, the second gear 2043, and the third gear 2045 are sequentially engaged.

In a specific implementation process, the acting force received by the first optical fiber 10 is transmitted to the first concave wheel 202, and causes the first concave wheel 202 to rotate, the first concave wheel 202 drives the first shaft 2042 connected thereto to rotate, and further drives the first gear 2041 to rotate, and then the second gear 2043 and the third gear 2045, which are sequentially meshed with each other, are provided with different numbers of teeth of each gear, so as to achieve a transmission ratio of the acting force received by the first optical fiber 10 in the transmission process, in an embodiment of the present invention, the transmission ratio of the gear transmission structure 204 is 1. Preferably, in the embodiment of the present invention, the gear ratio of the gear transmission structure 204 is 1. Namely, after the transmission of the gear transmission part 20, the displacement change output through the second concave wheel 203 is increased by 100 times, the displacement of the second optical fiber 30 connected with the second concave wheel 203 will be greatly changed at the moment, the optical fiber detection device 40 connected with the second optical fiber 30 can accurately detect the displacement change, and further detect that the bridge or the tunnel currently detected has certain deformation, and according to the deformation, a technician can accurately analyze whether the current bridge or the tunnel needs to be maintained or overhauled.

In the embodiment of the present invention, the optical fiber detection device 40 is an optical time domain reflectometer. Preferably, in the embodiment of the present invention, the optical time domain reflectometer is FS790.

The embodiment of the utility model provides an in, come to regard as the medium that carries out long-time control to bridge or tunnel through adopting the current electronic sensor of optic fibre replacement, can effectively avoid because of the erosion and the damage that humid environment leads to the electronic product, improved detection reliability and detection stability greatly, adopt gear drive part 20 to enlarge the detection to the slight deformation in bridge or tunnel simultaneously, can improve detectivity and accuracy nature greatly, satisfied actual user demand.

The above describes in detail optional implementation manners of embodiments of the present invention with reference to the accompanying drawings, however, the embodiments of the present invention are not limited to the details in the above implementation manners, and in the technical concept scope of the embodiments of the present invention, it is possible to perform various simple modifications on the technical solutions of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present invention do not separately describe various possible combinations.

In addition, various different implementation manners of the embodiments of the present invention can be combined arbitrarily, and as long as it does not violate the idea of the embodiments of the present invention, it should be considered as the disclosure of the embodiments of the present invention.

Claims

1. An optical fiber-based bridge inspection device, comprising:

the first optical fiber (10) is arranged at the position to be detected of the bridge;

a gear transmission member (20), a first optical fiber (10) being wound through one side of the gear transmission member (20), a second optical fiber (30) being linked with the first optical fiber (10) through the gear transmission member (20), the gear transmission member (20) being for conducting a traction force of the first optical fiber (10) to the second optical fiber (30);

the second optical fiber (30) is wound through the gear transmission part (20) and is opposite to the first optical fiber (10), and the second optical fiber (30) is connected with an optical fiber detection device (40).

2. The optical fiber-based bridge inspection device of claim 1, wherein the first optical fiber (10) is a tight-buffered optical fiber.

3. The optical fiber-based bridge inspection device of claim 1, wherein the geared assembly (20) comprises a body (201), and a first concave wheel (202) disposed on one side of the body (201) and a second concave wheel (203) disposed on the body (201) on an opposite side of the first concave wheel (202), the first optical fiber (10) being wound through the first concave wheel (202), the second optical fiber (30) being wound through the second concave wheel (203), the body (201) comprising a geared structure (204).

4. The fiber optic-based bridge inspection device of claim 3, wherein the geared architecture (204) comprises a first gear (2041) and a first shaft (2042) extending through a center of the first gear (2041), a second gear (2043) and a second shaft (2044) extending through a center of the second gear (2043), a third gear (2045) and a third shaft (2046) extending through a center of the third gear (2045), wherein the first shaft (2042) also extends through a center of the first concave wheel (202), wherein the third shaft (2046) also extends through a center of the second concave wheel (203), and wherein the first gear (2041), the second gear (2043) and the third gear (2045) are sequentially toothed.

5. The optical fiber-based bridge inspection device of claim 3, wherein the gear transmission structure (204) has a transmission ratio of 1.

6. The optical fiber-based bridge inspection device of claim 5, wherein the gear transmission structure (204) has a transmission ratio of 1.

7. The optical fiber-based bridge inspection device of claim 1, wherein the optical fiber inspection device (40) is an optical time domain reflectometer.

8. The optical fiber-based bridge inspection device of claim 7, wherein the optical time domain reflectometer is FS790.