Portable installation tool for optical fiber strain sensor

Abstract

The invention discloses a portable mounting tool for an optical fiber strain sensor, and belongs to the technical field of mounting tools for optical fiber strain sensors, and the portable mounting tool for the optical fiber strain sensor comprises a gun stock tool main body, a polishing mechanism, an injection mechanism, a positioning mechanism, a pasting mechanism, an adjustable pre-fixing mechanism and a joint pre-placing mechanism are integrated on the gun stock tool main body; the installation efficiency of the optical fiber strain sensor is remarkably improved, the installation time and labor cost are reduced, the accuracy of the pasting position of the sensor and the consistency of the polishing degree are ensured, and the measurement precision and reliability of the sensor are improved. Due to the portable design, the tool can be conveniently carried to various installation sites, and the installation requirements in different environments are met. Through the optimized integrated design of the polishing mechanism, the injection mechanism, the positioning mechanism, the pasting mechanism and the adjustable pre-fixing mechanism in the installation tool, the pasting quality and stability of the optical fiber strain sensor are improved.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber strain sensor installation tools, and in particular to a portable installation tool for an optical fiber strain sensor. Background Art

[0002] Structural monitoring collects and analyzes physical quantities that reflect the state of the structure in real time through a sensor network, such as strain, temperature, displacement, acceleration, and vibration mode. After obtaining this information, it uses advanced signal processing methods to process the information and extract characteristic parameters that reflect the state of the structure, thereby achieving the purpose of intelligently evaluating the health status, operating status, reliability, durability, and bearing capacity of the structure, and playing a role in controlling or eliminating the further development of safety hazards in the early stages of structural damage.

[0003] With the continuous development of fiber optic sensing technology, fiber optic strain sensors with excellent electrical insulation and anti-electromagnetic interference capabilities have been widely used in the field of structural monitoring. However, in the actual installation process, the traditional manual pasting installation method is inconvenient to operate, and there are problems such as inaccurate pasting position, inconsistent polishing degree, and uneven adhesive application. Due to the small size of the fiber optic strain sensor and high installation accuracy requirements, the traditional installation method is often difficult to meet the requirements. Not only is the installation efficiency low, but it is also easy to damage the fiber optic strain sensor, affecting its performance and service life. It is difficult to ensure the installation accuracy and pasting quality of the fiber optic strain sensor, resulting in measurement errors and reduced reliability. In addition, most of the existing fiber optic strain sensor installation tools are large in size, inconvenient to carry and operate in a small space, and cannot meet the needs of rapid on-site installation. Therefore, a portable special tool is needed to improve the installation consistency and efficiency of the fiber optic strain sensor. Summary of the invention

[0004] In view of the shortcomings of existing optical fiber strain sensors, such as the large number of installation tools, inconvenient operation, inaccurate pasting position, inconsistent polishing degree and uneven application of adhesive, the present invention provides a portable installation tool for optical fiber strain sensors to solve the problems of complex operation, low efficiency and poor consistency of installed sensors in the traditional optical fiber strain sensor installation process.

[0005] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0006] Provided is a portable installation tool for an optical fiber strain sensor, which includes a buttstock tool body, on which a grinding mechanism, an injection mechanism, a positioning mechanism, a pasting mechanism, an adjustable pre-fixing mechanism, and a joint pre-placement mechanism are integrated;

[0007] The polishing mechanism comprises a polishing head which is detachably connected to the upper end surface of the front end of the butt tooling body, and the polishing head is used for polishing the surface of the installation area of ​​the optical fiber strain sensor.

[0008] The injection mechanism includes multiple injection joints, multiple injection pipes, multiple injection switches and multiple solvent tanks; multiple injection joints are arranged on the front end surface of the front end of the butt tooling body; multiple injection pipes are arranged inside the butt tooling body; multiple solvent tanks are arranged on the rear end surface of the rear end of the butt tooling body, and the multiple solvent tanks are respectively filled with different solvents, and each solvent tank is connected to an extrusion device; one end of each injection pipe is connected to an injection joint, and the other end is connected to a solvent tank, and each injection pipe is provided with an injection switch.

[0009] The positioning mechanism is used to mark the installation center and adhesive coating range of the optical fiber strain sensor on the surface of the polished installation area;

[0010] The pasting mechanism is used to fix the position of the installed optical fiber strain sensor;

[0011] The adjustable pre-fixing mechanism includes an optical fiber holder for fixing optical fibers at both ends of the optical fiber strain sensor;

[0012] The connector pre-placement mechanism is used to place the injection connector.

[0013] Furthermore, the grinding head is threadedly connected to the upper end surface of the front end of the gunstock tooling body, so that the grinding head can be quickly replaced and installed.

[0014] Furthermore, the injection mechanism includes three injection joints, three injection pipes, three injection switches and three solvent tanks, and the three solvent tanks are respectively filled with a cleaning solvent, an adhesive and a debonding solvent.

[0015] Furthermore, each extrusion device includes a push rod, a push plate and an extrusion handle; the top of the push rod is arranged in the solvent tank and a push plate is arranged on it, the cross-section of the push plate is the same as the cross-section of the solvent tank, and the bottom of the push rod is located outside the solvent tank; the extrusion handle is arranged below the main body of the gun stock tooling, the extrusion handle is in a "7"-shaped structure, the middle part of the extrusion handle is rotatably connected to the main body of the gun stock tooling, and the horizontal section of the extrusion handle is in contact with the bottom of the push rod.

[0016] Furthermore, a gripping handle is provided on the lower end surface of the rear end of the gunstock tooling body; the vertical section of the squeezing handle is located on the left side of the gripping handle. The gripping handle is used to cooperate with the squeezing handle, so that the operator can squeeze out different solvents in multiple solvent tanks by pressing the vertical section of the squeezing handle.

[0017] Furthermore, the positioning mechanism includes an installation center positioning stamp and an adhesive coating range positioning stamp arranged on the front side of the buttstock tooling body; a cross mark is arranged in the middle of the installation center positioning stamp, and the adhesive coating range positioning stamp is a rectangular structure with four corner marks of the coating area arranged around it.

[0018] Furthermore, the pasting mechanism includes a tape installation box and a cutting head arranged on the lower end surface of the front end of the gunstock tooling body, and the cutting head is located at one side of the tape installation box outlet; an aluminum foil tape is arranged in the tape installation box. The aluminum foil tape adheres the optical fiber strain sensor to the installation area to fix the installation position of the optical fiber strain sensor and prevent the optical fiber strain sensor from falling off.

[0019] Furthermore, the adjustable pre-fixing mechanism includes two optical fiber holders, which are arranged horizontally at intervals, and each optical fiber holder is slidably connected to the front side of the buttstock tooling body.

[0020] Two optical fiber holders are slidably arranged on the front side of the butt tooling body. The distance between the two optical fiber holders can be adjusted to adapt to optical fiber strain sensors of different models. The two optical fiber holders are respectively used to hold and fix the optical fibers on both sides of the optical fiber strain sensor to prevent the optical fibers on both sides from moving and causing the optical fiber strain sensor to fall off during installation.

[0021] Furthermore, the joint pre-placement mechanism includes a placement box arranged at the front end of the buttstock tooling body, and the placement box is used to place the injection joint.

[0022] Furthermore, the material of the main body of the buttstock tooling is aluminum alloy, which enables a lightweight design of the installation tooling, making it easy to carry and use in various complex environments.

[0023] The beneficial effects of the present invention are as follows: the portable installation tool for optical fiber strain sensors of the present invention significantly improves the installation efficiency of optical fiber strain sensors, reduces installation time and labor costs, ensures the accuracy of the sensor pasting position, the consistency of the polishing degree, and improves the sensor measurement accuracy and reliability. The portable design of the tool is convenient to carry to various installation sites to meet the installation requirements in different environments. The optimized integrated design of the polishing mechanism, injection mechanism, positioning mechanism, pasting mechanism, and adjustable pre-fixing mechanism in the installation tool improves the pasting quality and stability of the optical fiber strain sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure is a front view structural schematic diagram of a portable installation tool for optical fiber strain sensors.

[0025] Figure 2 The figure is a side view structural schematic diagram of a portable installation tool for optical fiber strain sensors.

[0026] Figure 3 The figure is a top view structural diagram of a portable installation tool for optical fiber strain sensors.

[0027] Among them, 1. Gunstock tooling body; 2. Grinding head; 3. Injection joint; 4. Injection fittings; 5. Injection switch; 6. Solvent tank; 7. Fiber optic holder; 8. Push rod; 9. Push plate; 10. Squeeze handle; 11. Holding handle; 12. Installation center positioning stamp; 13. Adhesive coating range positioning stamp; 14. Tape installation box; 15. Cutting head; 16. Placement box. DETAILED DESCRIPTION

[0028] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0029] like Figure 1 to Figure 3 As shown, the present invention provides a portable installation tool for optical fiber strain sensors, which includes a gunstock tool body 1. Preferably, but not limited to, the material of the gunstock tool body 1 is high-strength and lightweight aluminum alloy, so that the entire installation tool is lightweight in design and easy to carry and use in various complex environments.

[0030] The gunstock tooling body 1 is integrated with a grinding mechanism, an injection mechanism, a positioning mechanism, a pasting mechanism, an adjustable pre-fixing mechanism and a joint pre-releasing mechanism.

[0031] The polishing mechanism includes a polishing head 2 detachably connected to the upper end surface of the front end of the gunstock tooling body 1, and the polishing head 2 is used to polish the surface of the installation area of ​​the optical fiber strain sensor. Specifically, the polishing head 2 is threadedly connected to the upper end surface of the front end of the gunstock tooling body 1, so that the polishing head 2 can be quickly replaced and installed.

[0032] The injection mechanism includes multiple injection connectors 3, multiple injection pipe fittings 4, multiple injection switches 5 and multiple solvent tanks 6; multiple injection connectors 3 are arranged on the front end surface of the front end of the butt tooling body 1; multiple injection pipe fittings 4 are arranged inside the butt tooling body 1; multiple solvent tanks 6 are arranged on the rear end surface of the rear end of the butt tooling body 1, and the multiple solvent tanks 6 are respectively filled with different solvents, and each solvent tank 6 is connected to an extrusion device; one end of each injection pipe fitting 4 is connected to an injection connector 3, and the other end is connected to a solvent tank 6, and each injection pipe fitting 4 is provided with an injection switch 5.

[0033] As a specific design mode of the injection mechanism, the injection mechanism includes three injection joints 3, three injection pipes 4, three injection switches 5 and three solvent tanks 6, and the three solvent tanks 6 are respectively filled with cleaning solvent, adhesive and debonding solvent. Each extrusion device includes a push rod 8, a push plate 9 and an extrusion handle 10; the top of the push rod 8 is arranged in the solvent tank 6 and a push plate 9 is arranged on it, the cross section of the push plate 9 is the same as the cross section of the solvent tank 6, and the bottom of the push rod 8 is located outside the solvent tank 6; the extrusion handle 10 is arranged below the gun stock tooling body 1, and the extrusion handle 10 is a "7"-shaped structure, the middle part of the extrusion handle 10 is rotatably connected to the gun stock tooling body 1, and the horizontal section of the extrusion handle 10 contacts the bottom of the push rod 8. Pressing the vertical section of the extrusion handle 10, the extrusion handle 10 rotates around its own middle part, so that the horizontal section of the extrusion handle 10 moves up to push the push rod 8 and the push plate 9 at its top to move up in the solvent tank 6, so as to squeeze out the solvent in the solvent tank 6.

[0034] The lower end surface of the rear end of the gunstock tooling body 1 is provided with a gripping handle 11; the vertical section of the squeezing handle 10 is located on the left side of the gripping handle 11. The gripping handle 11 is used to cooperate with the squeezing handle 10, so that the operator can squeeze out different solvents in multiple solvent tanks 6 by pressing the vertical section of the squeezing handle 10.

[0035] The positioning mechanism is used to mark the installation center and adhesive coating range of the optical fiber strain sensor on the surface of the polished installation area; specifically, Figure 1 As shown, the positioning mechanism includes an installation center positioning stamp 12 and an adhesive coating range positioning stamp 13 arranged on the front side of the buttstock tooling body 1; a cross mark is arranged in the middle of the installation center positioning stamp 12, and the adhesive coating range positioning stamp 13 is a rectangular structure with four corner marks of the coating area arranged around it.

[0036] The pasting mechanism is used to fix the position of the installed optical fiber strain sensor; specifically, the pasting mechanism includes a tape installation box 14 and a cutting head 15 arranged on the lower end surface of the front end of the gunstock tooling body 1, and the cutting head 15 is located at the outlet side of the tape installation box 14; an aluminum foil tape is arranged in the tape installation box 14. The aluminum foil tape adheres the optical fiber strain sensor to the installation area to fix the installation position of the optical fiber strain sensor and prevent the optical fiber strain sensor from falling off.

[0037] like Figure 1As shown, the adjustable pre-fixing mechanism includes an optical fiber holder 7 for fixing the optical fibers at both ends of the optical fiber strain sensor; the two optical fiber holders 7 are arranged horizontally at intervals, and each optical fiber holder 7 is slidably connected to the front of the gunstock tooling body 1. The two optical fiber holders 7 are slidably arranged on the front of the gunstock tooling body 1, and the spacing between the two optical fiber holders 7 can be adjusted to adapt to different types of optical fiber strain sensors, and the two optical fiber holders 7 are respectively used to lift and fix the optical fibers on both sides of the optical fiber strain sensor to prevent the optical fiber strain sensor from falling off due to the movement of the optical fibers on both sides.

[0038] The connector pre-placement mechanism is used to place the injection connector 3. Specifically, the connector pre-placement mechanism includes a placement box 16 arranged at the front end of the butt tooling body 1. The placement box 16 is used to place the injection connector 3, so as to facilitate the subsequent replacement of different injection connectors 3 according to different usage requirements.

[0039] The specific use steps of the installation tool in the present invention are as follows: use the grinding head 2 to roughly grind the surface of the installation area, the size of the grinding area is 40×40mm, take out the injection connector 3 for cleaning from the placement box 16, adjust the injection switch 5 and press the squeeze handle 10 to spray alcohol solvent to clean the grinding area. The size of the optical fiber strain sensor is 25×3mm, and the distance between the two optical fiber holders 7 is adjusted to 35mm; use the installation center positioning stamp 12 and the adhesive coating range positioning stamp 13 to mark the installation center and the adhesive coating range in the grinding area. Replace the injection connector 3 with a glue coating connector, evenly apply epoxy resin adhesive on the installation surface of the optical fiber strain sensor, and after the adhesive is slightly cured, bond the optical fiber strain sensor to the installation center. The optical fibers at both ends of the optical fiber strain sensor are respectively inserted into the optical fiber holder 7 to prevent the movement of the optical fibers at both ends from causing the optical fiber strain sensor installation to fall off. Take out the aluminum foil tape with a length of more than 30 mm from the tape installation box 14, cut the aluminum foil tape with the cutting head 15, stick the aluminum foil tape on the surface of the optical fiber strain sensor and the surface of the installation area, and apply pressure with fingers for 15 seconds. Replace the injection connector 3 with a connector for adhesive remover, spray the adhesive remover on the optical fiber holder 7, and remove the optical fiber holder 7 from the surface of the installation area 30 seconds after spraying, completing the adhesive installation of the optical fiber strain sensor.

[0040] In summary, the portable installation tool for optical fiber strain sensors of the present invention significantly improves the installation efficiency of optical fiber strain sensors, reduces installation time and labor costs, ensures the accuracy of the sensor pasting position, the consistency of the polishing degree, and improves the sensor measurement accuracy and reliability. The portable design of the tool is convenient to carry to various installation sites to meet the installation requirements in different environments. The optimized integrated design of the polishing mechanism, injection mechanism, positioning mechanism, pasting mechanism, and adjustable pre-fixing mechanism in the installation tool improves the pasting quality and stability of the optical fiber strain sensor.

Claims

1. A portable installation tool for optical fiber strain sensor, characterized in that: It comprises a gunstock tooling body, on which a grinding mechanism, an injection mechanism, a positioning mechanism, a pasting mechanism, an adjustable pre-fixing mechanism and a joint pre-releasing mechanism are integrated; The polishing mechanism comprises a polishing head detachably connected to the upper end surface of the front end of the butt tooling body, and the polishing head is used to polish the surface of the installation area of ​​the optical fiber strain sensor; The injection mechanism includes a plurality of injection joints, a plurality of injection pipes, a plurality of injection switches and a plurality of solvent tanks; the plurality of injection joints are arranged on the front side end surface of the front end of the butt tooling body; the plurality of injection pipes are arranged inside the butt tooling body; the plurality of solvent tanks are arranged on the rear side end surface of the rear end of the butt tooling body, the plurality of solvent tanks are respectively filled with different solvents, and each solvent tank is connected to an extrusion device; one end of each injection pipe is connected to an injection joint, and the other end is connected to a solvent tank, and each injection pipe is provided with an injection switch; The positioning mechanism is used to mark the installation center of the optical fiber strain sensor and the adhesive coating range on the surface of the polished installation area; The pasting mechanism is used to fix the position of the installed optical fiber strain sensor; The adjustable pre-fixing mechanism includes an optical fiber holder for fixing the optical fibers at both ends of the optical fiber strain sensor; The joint pre-placing mechanism is used for placing the injection joint.

2. The portable installation tool for optical fiber strain sensor according to claim 1, characterized in that: The grinding head is threadedly connected to the upper end surface of the front end of the gunstock tooling body.

3. The portable installation tool for optical fiber strain sensor according to claim 1, characterized in that: The injection mechanism comprises three injection joints, three injection pipes, three injection switches and three solvent tanks, wherein the three solvent tanks are respectively filled with a cleaning solvent, an adhesive and a debonding solvent.

4. The portable installation tool for optical fiber strain sensor according to claim 3 is characterized in that: Each of the extrusion devices includes a push rod, a push plate and an extrusion handle; the top of the push rod is arranged in the solvent tank and the push plate is arranged on it, the cross-section of the push plate is the same as the cross-section of the solvent tank, and the bottom of the push rod is located outside the solvent tank; the extrusion handle is arranged below the main body of the gun stock tooling, the extrusion handle is in a "7" shape, the middle part of the extrusion handle is rotatably connected to the main body of the gun stock tooling, and the horizontal section of the extrusion handle is in contact with the bottom of the push rod.

5. The portable installation tool for optical fiber strain sensor according to claim 4, characterized in that: A holding handle is arranged on the lower end surface of the rear end of the butt tooling body; and the vertical section of the squeezing handle is located on the left side of the holding handle.

6. The portable installation tool for optical fiber strain sensor according to claim 1, characterized in that: The positioning mechanism includes an installation center positioning stamp and an adhesive coating range positioning stamp arranged on the front side of the buttstock tooling body; a cross mark is arranged in the middle of the installation center positioning stamp, and the adhesive coating range positioning stamp is a rectangular structure with four corner marks of the coating area arranged around it.

7. The portable installation tool for optical fiber strain sensor according to claim 1, characterized in that: The pasting mechanism comprises a tape installation box and a cutting head arranged on the lower end surface of the front end of the gunstock tooling body, and the cutting head is located at one side of the outlet of the tape installation box; and an aluminum foil tape is arranged in the tape installation box.

8. The portable installation tool for optical fiber strain sensor according to claim 1, characterized in that: The adjustable pre-fixing mechanism includes two optical fiber holders, which are arranged horizontally at intervals, and each optical fiber holder is slidably connected to the front side of the gunstock tooling body.

9. The portable installation tool for optical fiber strain sensor according to claim 1, characterized in that: The joint pre-placement mechanism comprises a placement box arranged at the front end of the buttstock tooling body.

10. The portable installation tool for optical fiber strain sensor according to any one of claims 1 to 9, characterized in that: The material of the buttstock tooling body is aluminum alloy.

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