Bridge deflection monitoring and early warning device

Abstract

The application relates to a bridge deflection monitoring and early warning device, and relates to the technical field of bridge deflection monitoring, which comprises a deflection detector, a lens is arranged on the deflection detector, a fixing box is fixedly arranged on the deflection detector, the lens is located in the fixing box, and a light transmission hole is arranged on the fixing box and faces the lens; an active belt is wound on a releasing roller, one end of the active belt away from the releasing roller is wound on a winding roller, the active belt passes in front of the lens, a motor for driving the winding roller to rotate is arranged on the fixing box, a plurality of cleaning bodies are arranged on the inner side of the active belt, a plurality of through holes are arranged on the active belt, the cleaning bodies and the through holes are alternately distributed in the length direction of the active belt, and the cleaning bodies can be in contact with the lens. The application has the effects that the cleaning layer is prevented from being polluted after being cleaned for many times, the cleaning effect is prevented from being reduced, and the device can be used for a long time in an outdoor environment with more dust.

Description

Technical Field

[0001] This application relates to the field of bridge deflection monitoring technology, and in particular to a bridge deflection monitoring and early warning device. Background Technology

[0002] Bridge deflection monitoring and early warning devices typically require deflection measuring instruments, which are used to measure deflection. Deflection measuring instruments can measure the change in vertical distance from an object above at any angle. They are mainly used for measuring the static and dynamic deflection of bridges; bridge completion acceptance and appraisal; inspection of special bridges such as military pontoon bridges and suspension bridges; deformation and vibration displacement monitoring of dams and wharves; or deformation and vibration displacement monitoring of beams and columns in large-span structures, high-rise buildings, lifting machinery, drilling platforms, etc.

[0003] A related technology discloses a device for monitoring bridge deflection, comprising a deflection meter with a lens mounted on its front. A mounting box is fixedly mounted on the deflection meter, and a panel is rotatably mounted on the mounting box. The panel is located in front of the lens and has a through-hole directly opposite the lens. A cleaning layer is provided on the inner side of the panel, allowing it to contact the lens. When the front of the deflection meter becomes heavily dusty, the panel rotates, allowing the cleaning layer to contact and wipe the lens, thus ensuring the accuracy of bridge deflection monitoring.

[0004] In the process of developing this application, it was found that the technology has at least the following problems: In outdoor environments, especially in the working environment of bridge completion acceptance and appraisal, there is a lot of dust. After cleaning the lens multiple times, the cleaning layer in this technology will also be contaminated by the dust on the lens, resulting in a decrease in the cleaning effect and making it difficult to support the long-term use of the device. Utility Model Content

[0005] To prevent the cleaning layer from becoming contaminated after repeated cleaning, thus reducing the cleaning effect and to ensure that the device can be used for a long time in dusty outdoor environments, this application provides a bridge deflection monitoring and early warning device.

[0006] The bridge deflection monitoring and early warning device provided in this application adopts the following technical solution:

[0007] A bridge deflection monitoring and early warning device includes a deflection detector with a lens. A fixed housing is fixedly mounted on the deflection detector, and the lens is located inside the fixed housing. A light-transmitting hole facing the lens is opened on the fixed housing. A take-up roller and an unwind roller are rotatably mounted inside the fixed housing. The take-up roller is located on one side of the lens, and the unwind roller is located on the other side of the lens. A movable belt is wound around the unwind roller, with one end of the movable belt away from the unwind roller wound onto the take-up roller. The movable belt passes in front of the lens. A motor for driving the take-up roller to rotate is mounted on the fixed housing. A plurality of cleaning bodies are arranged inside the movable belt, and a plurality of through holes are opened on the movable belt. The cleaning bodies and the through holes are alternately distributed along the length of the movable belt. The cleaning bodies can contact the lens, and the through holes can face the lens.

[0008] By adopting the above technical solution, when the lens of the deflection measuring instrument needs to be cleaned, the motor starts and drives the take-up roller to rotate. The rotation of the take-up roller drives the movable belt to move from the unwind roller to the take-up roller. During the movement of the movable belt, the cleaning body on the inner side of the movable belt comes into contact with the lens. The cleaning body wipes the lens surface, removing dust and other stains from the lens. Finally, the through hole on the movable belt moves to be directly opposite the lens. The lens can monitor bridge deflection through the through hole and the light-transmitting hole without affecting the normal operation of the monitoring work. After the cleaning body is used, it becomes dusty. The used cleaning body is wound onto the take-up roller with the movable belt. The unwind roller continuously releases the movable belt with clean cleaning body, so that the cleaning body is not reused and can be continuously renewed, always maintaining the cleaning effect on the lens. In this way, the problem of the cleaning effect decreasing after multiple cleanings of the cleaning layer in the prior art is solved, ensuring that the device can be used for a long time in dusty outdoor environments, improving the accuracy and continuity of bridge deflection monitoring.

[0009] Preferably, a set of guide rollers is rotatably arranged inside the fixed box, the guide rollers are located on both sides of the lens, and the guide rollers abut against the movable belt.

[0010] By adopting the above technical solution, when the movable belt moves between the take-up roller and the unwind roller, it will pass around the guide roller. The guide roller makes the movable belt parallel and close to the lens surface, thereby ensuring that the cleaning body can stably and thoroughly wipe the lens surface, minimizing the possibility of poor contact between the cleaning body and the lens due to the deviation of the movable belt, which would affect the cleaning effect. At the same time, the guide roller provides guidance and support for the movement of the movable belt, reducing the shaking and loosening of the movable belt during the movement process, ensuring the smooth operation of the movable belt, and further ensuring that the cleaning body can clean the lens in an orderly and continuous manner.

[0011] Preferably, the cleaning body includes a wet wipe, which is fixed inside the movable belt and is soaked in cleaning solution.

[0012] By adopting the above technical solution, when the motor drives the take-up roller to move the movable belt, the cleaning solution makes it easier for the wet wipes to wipe away impurities as they pass over the lens surface. Compared with ordinary cleaning solutions, the wet wipes soaked in cleaning solution can dissolve oily stains and stubborn dust more efficiently, greatly improving the cleaning effect.

[0013] Preferably, a sealing strip is provided on the movable belt wound on the unwinding roller, and the edge of the sealing strip is glued to the inner side of the movable belt. The sealing strip and the movable belt together wrap the wet wipe wound on the unwinding roller.

[0014] By adopting the above technical solution, when the wet wipes are not in use, the combined wrapping of the sealing strip and the movable strip can prevent the cleaning solution inside the wet wipes from evaporating, thus maintaining the wet wipes' moisture and cleaning ability.

[0015] Preferably, the sealing strip has an integrally formed tear-off portion at the end that first separates from the unwinding roller, and the tear-off portion is fixedly connected to the outer side of the movable belt.

[0016] By adopting the above technical solution, when the sealing strip is about to detach from the unwinding roller along with the movable belt, the tearing part is constrained by the outer side of the movable belt that has not detached from the unwinding roller, and cannot detach from the unwinding roller along with the front section of the movable belt. This forces the adhesive between the sealing strip and the movable belt to break, and the sealing strip detaches from the side of the movable belt facing the lens, exposing the wet wipe. The exposure of the wet wipe is automatically completed during the movement of the movable belt.

[0017] Preferably, the cleaning body further includes an absorbent towel, which is fixed to the inside of the movable belt and is located between the wet wipe and the through hole.

[0018] By adopting the above technical solution, during the process of moving the cleaning body to clean the lens using the movable belt, the wet wipes first use the cleaning solution to dissolve and wipe the dust and stains on the lens surface, completing the initial cleaning; then the absorbent wipes move closely to the lens surface, wiping away the residual cleaning solution and the wastewater generated during the wiping process, minimizing the water stains or dirt formed by residual cleaning solution, which could affect the lens's light transmittance and the accuracy of the monitoring data.

[0019] Preferably, the fixing box includes a box body and a top cover. The box body is fixedly connected to the deflection detector, and the top cover is detachably connected to the box body by bolts. A first mounting plate and a second mounting plate are rotatably arranged on the box body and the top cover, respectively. The first mounting plate has a first slot. One end of the take-up roller is inserted into one of the first slots, and the other end of the take-up roller is inserted into the other first slot. The motor is fixed to the box body, and the drive shaft of the motor is coaxially fixed to the first mounting plate on the box body. The second mounting plate has a second slot. One end of the unwinding roller is inserted into one of the second slots, and the other end of the unwinding roller is inserted into the other second slot.

[0020] By adopting the above technical solution, the box body and the top cover of the fixed box are detachably connected by bolts, which facilitates the installation and replacement of the take-up roller and the unwind roller. When the movable belt needs to be replaced, the unwind roller or the take-up roller can be taken out of the slot and replaced simply by removing the top cover. The motor drives the first mounting plate on the box body to rotate coaxially to transmit power to the take-up roller.

[0021] Preferably, a friction disc is fixedly provided on any of the second mounting plates, and the friction disc is in contact with the box body or the top cover.

[0022] By adopting the above technical solution, the friction disc generates resistance when it contacts the box or top cover, which in turn creates resistance to the rotation of the unwind roller. This helps to prevent the unwind roller from rotating freely due to inertia or slack during the winding of the movable belt, thereby keeping the movable belt taut and ensuring the contact effect between the cleaning body and the lens.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up a fixed box, take-up roller, unwind roller, movable belt, motor, cleaning body, through hole, and guide roller, the unidirectional movement of the movable belt enables the one-time use and continuous renewal of the cleaning body, minimizing the risk of contamination from repeated use and resulting in a decrease in cleaning effect. This ensures the continuity of lens cleaning and the reliability of monitoring work, and is suitable for long-term use in dusty outdoor environments.

[0025] 2. By setting up wet wipes, sealing strips, tear-off parts, and absorbent wipes, the wet wipes are soaked in cleaning solution to enhance the cleaning ability of stubborn stains, the sealing strips wrap the wet wipes to prevent the cleaning solution from evaporating, the tear-off parts automatically peel off the sealing strips during the movement of the moving belt, and the absorbent wipes absorb residual liquid on the lens surface to minimize water stains affecting light transmittance.

[0026] 3. By setting up a box body, top cover, first mounting plate, second mounting plate, first slot, second slot, and friction plate, the detachable fixed box facilitates the installation and replacement of the take-up roller, unwind roller, and movable belt, improving maintenance efficiency. The friction plate creates rotational resistance on the unwind roller, improving the tension of the movable belt, ensuring the pressure of the cleaning body in contact with the lens, making the through hole and lens accurately aligned, and improving the stability of the device operation and the accuracy of monitoring data. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of a bridge deflection monitoring and early warning device provided in the embodiments of this application.

[0028] Figure 2 This is a cross-sectional structural diagram of a bridge deflection monitoring and early warning device provided in the embodiments of this application.

[0029] Figure 3 This is a partial enlarged view of the unwinding roller of a bridge deflection monitoring and early warning device provided in the embodiments of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Deflection measuring instrument; 11. Lens; 2. Fixing box; 21. Box body; 211. Motor; 212. Light-transmitting hole; 22. Top cover; 23. First mounting plate; 231. First slot; 232. Take-up roller; 24. Second mounting plate; 241. Second slot; 242. Unwind roller; 243. Friction disc; 25. Guide roller; 3. Moving belt; 31. Cleaning body; 311. Wet wipe; 312. Sealing strip; 3121. Tear-off part; 313. Absorbent wipe; 32. Through hole. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a bridge deflection monitoring and early warning device. (Refer to...) Figure 1 and Figure 2 The device includes a deflection measuring instrument 1, with a lens 11 at its front end. A mounting box 2 is fixedly mounted on the outer casing of the deflection measuring instrument 1, with the lens 11 located inside the mounting box 2. The mounting box 2 has a light-transmitting hole 212 facing the lens 11. The mounting box 2 includes a rectangular box body 21 and a top cover 22. The box body 21 is fixedly connected to the outer casing of the deflection measuring instrument 1, and the top cover 22 is detachably connected to the box body 21 by bolts. The light-transmitting hole 212 is located at the front of the box body 21.

[0033] Reference Figure 1 and Figure 2 Inside the housing 21, a take-up roller 232 and an unwind roller 242 are vertically and rotatably mounted. The take-up roller 232 is located on one side of the lens 11, and the unwind roller 242 is located on the other side of the lens 11. A movable belt 3, which is a flexible strip structure, is wound around the unwind roller 242. The end of the movable belt 3 away from the unwind roller 242 is wound around the take-up roller 232. The movable belt 3 passes in front of the lens 11, and a motor 211 for driving the take-up roller 232 to rotate is mounted on the fixed housing 2. Several cleaning bodies 31 are arranged on the inner side of the movable belt 3, and several through holes 32 are opened on the movable belt 3. The cleaning bodies 31 and the through holes 32 are alternately distributed and spaced apart from each other along the length of the movable belt 3. The cleaning bodies 31 can contact the lens 11, and the through holes 32 can be directly opposite the lens 11.

[0034] Reference Figure 1 and Figure 2A set of guide rollers 25 are vertically rotatably mounted on the fixed box 2. The guide rollers 25 are located on both sides of the lens 11. The common cross-section of the set of guide rollers 25 is flush with the surface of the lens 11. The movable belt 3 passes around all the guide rollers 25 and abuts against the inner side of the guide rollers 25. The top of the guide rollers 25 can be detached from the top cover 22. Specifically, the bottom of the top cover 22 has a circular groove, and the top of the guide rollers 25 is inserted into the circular groove.

[0035] Reference Figure 1 and Figure 2 The cleaning unit 31 includes a wet wipe 311 and an absorbent wipe 313, both of which are fixed inside the movable belt 3. The wet wipe 311 is soaked in cleaning solution, which can be water, alcohol-based cleaning solution, or other options depending on the nature of the dust in the working environment. The cleaning solution is used to dissolve oil and dust on the surface of the lens 11. The absorbent wipe 313 is made of non-woven fabric and is used to absorb residual liquid on the lens 11.

[0036] Reference Figure 3 A sealing strip 312 is provided on the movable belt 3 wound around the unwinding roller 242. The edge of the sealing strip 312 is glued to the inner side of the movable belt 3. The middle part of the sealing strip 312 forms a closed space with the inner side of the movable belt 3 to wrap the wet wipe 311 and prevent the cleaning liquid from evaporating or becoming contaminated. A tear-off part 3121 is integrally formed at the end of the sealing strip 312 that is first separated from the unwinding roller 242. The tear-off part 3121 and the sealing strip 312 are wound together on the unwinding roller 242 with the movable belt 3. The tear-off part 3121 is fixed to the outer side of the movable belt 3, and there is no connection between the tear-off part 3121 and the inner side of the movable belt 3. When the movable belt 3 is unwound from the unwinding roller 242, the tear-off part 3121 is pulled by the outer side of the unwound part of the movable belt 3, forcing the adhesive between the sealing strip 312 and the movable belt 3 to break and separate, exposing the wet wipe 311 covered under the sealing strip 312.

[0037] Reference Figure 1 and Figure 2Each of the housing 21 and the top cover 22 is rotatably equipped with a first mounting plate 23 and a second mounting plate 24. The first mounting plate 23 has a first slot 231 with a polygonal cross-section. One end of a take-up roller 232 is inserted into one of the first slots 231, and the other end is inserted into the other first slot 231. A motor 211 is fixed to the housing 21, and the drive shaft of the motor 211 is coaxially fixed to the first mounting plate 23 on the housing 21. The motor 211 drives the first mounting plate 23 on the housing 21 to rotate coaxially, transmitting power to the take-up roller 232. The second mounting plate 24 has a second slot 241, also with a polygonal cross-section. One end of a unwind roller 242 is inserted into one of the second slots 241, and the other end is inserted into the other second slot 241. When the movable belt 3 needs to be replaced, simply remove the top cover 22 to open the fixing box 2, pull the unwinding roller 242 out of the second slot 241, and pull the winding roller 232 out of the first slot 231 for replacement.

[0038] Reference Figure 2 The edge of the second mounting plate 24 is provided with a friction plate 243. The friction plate 243 is made of rubber and contacts the inner wall of the box 21. It provides damping for the unwinding roller 242 through friction, preventing the unwinding roller 242 from rotating freely and ensuring that the movable belt 3 is always in a taut state.

[0039] The implementation principle of the bridge deflection monitoring and early warning device in this application embodiment is as follows: When the surface of the lens 11 is contaminated with dust, the motor 211 is started, the take-up roller 232 rotates and takes up the movable belt 3, and the unwind roller 242 simultaneously releases a new movable belt 3. When the movable belt 3 passes the guide roller 25, the cleaning body 31 adheres to the surface of the lens 11. The wet wipe 311 first dissolves the stains with cleaning fluid, and the absorbent wipe 313 then absorbs the residual liquid. After cleaning is completed, the through hole 32 is aligned with the lens 11, and the lens 11 performs monitoring work through the through hole 32 and the light transmission hole 212. The used cleaning body 31 is wound along with the movable belt 3 to the take-up roller 232, and the unwind roller 242 continuously provides the movable belt 3 with fresh cleaning body 31, so as to avoid the pollution problem caused by the reuse of the cleaning body 31 as much as possible, and ensure that the device can operate stably for a long time in a dusty environment.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bridge deflection monitoring and early warning device, comprising a deflection detector (1), wherein the deflection detector (1) is equipped with a lens (11), characterized in that: The deflection measuring instrument (1) is fixedly equipped with a fixed box (2), and the lens (11) is located inside the fixed box (2). The fixed box (2) has a light-transmitting hole (212) facing the lens (11). A take-up roller (232) and an unwind roller (242) are rotatably arranged inside the fixed box (2). The take-up roller (232) is located on one side of the lens (11), and the unwind roller (242) is located on the other side of the lens (11). A movable belt (3) is wound on the unwind roller (242), and the movable belt (3) is away from the unwind roller (242). The end is wound on the take-up roller (232), the movable belt (3) passes in front of the lens (11), the fixed box (2) is provided with a motor (211) for driving the take-up roller (232) to rotate, a number of cleaning bodies (31) are provided on the inner side of the movable belt (3), a number of through holes (32) are opened on the movable belt (3), the cleaning bodies (31) and the through holes (32) are alternately distributed in the length direction of the movable belt (3), the cleaning bodies (31) can contact the lens (11), and the through holes (32) can be directly opposite the lens (11).

2. The bridge deflection monitoring and early warning device of claim 1, wherein: A set of guide rollers (25) are rotatably arranged inside the fixed box (2). The guide rollers (25) are located on both sides of the lens (11) and abut against the movable belt (3).

3. The bridge deflection monitoring and early warning device of claim 1, wherein: The cleaning body (31) includes a wet wipe (311) which is fixed inside the movable belt (3) and is soaked in cleaning solution.

4. The bridge deflection monitoring and early warning device of claim 3, wherein: A sealing strip (312) is provided on the movable belt (3) wound on the unwinding roller (242). The edge of the sealing strip (312) is glued to the inner side of the movable belt (3). The sealing strip (312) and the movable belt (3) together wrap the wet towel (311) wound on the unwinding roller (242).

5. The bridge deflection monitoring and warning device of claim 4, wherein: The sealing strip (312) has an integrally formed tear-off part (3121) at the end that first separates from the unwinding roller (242), and the tear-off part (3121) is fixedly connected to the outer side of the movable belt (3).

6. The bridge deflection monitoring and warning device of claim 3, wherein: The cleaning body (31) also includes an absorbent towel (313), which is fixed to the inside of the movable belt (3) and is located between the wet wipe (311) and the through hole (32).

7. The bridge deflection monitoring and warning device of claim 1, wherein: The fixing box (2) includes a box body (21) and a top cover (22). The box body (21) is fixedly connected to the deflection detector (1). The top cover (22) is detachably connected to the box body (21) by bolts. A first mounting plate (23) and a second mounting plate (24) are rotatably arranged on the box body (21) and the top cover (22), respectively. A first slot (231) is provided on the first mounting plate (23). One end of the winding roller (232) is inserted into one of the first slots (231). Inside, the other end of the take-up roller (232) is inserted into another first slot (231), the motor (211) is fixed on the box body (21), the drive shaft of the motor (211) is coaxially fixed with the first mounting plate (23) on the box body (21), the second mounting plate (24) has a second slot (241), one end of the unwind roller (242) is inserted into one of the second slots (241), and the other end of the unwind roller (242) is inserted into another second slot (241).

8. The bridge deflection monitoring and warning device of claim 7, wherein: A friction disc (243) is fixedly provided on any of the second mounting discs (24), and the friction disc (243) is in contact with the housing (21) or the top cover (22).

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