A municipal bridge displacement detection device and method

Abstract

The application relates to the field of bridge detection, and provides a municipal bridge displacement detection device and method, a municipal bridge displacement detection device, which comprises a monitoring box and further comprises an extension support mechanism, the extension support mechanism comprises a Z-shaped column and two electric telescopic columns, the two electric telescopic columns are connected with two ends of the Z-shaped column respectively, a sedimentation-preventing base is fixedly connected to the lower end of the electric telescopic column, and the sedimentation-preventing base is fixedly connected to the ground; a photovoltaic panel, a wiping and dust-removing mechanism, a driving mechanism and a liquid storage mechanism are arranged on one of the electric telescopic columns, the photovoltaic panel is slidingly connected to the electric telescopic column, and the driving mechanism is connected with the photovoltaic panel. The application significantly improves the precision, stability and long-term reliability of bridge displacement detection, and can automatically clean the photovoltaic panel.

Description

Technical Field

[0001] This invention relates to the field of bridge inspection technology, specifically to a displacement detection device and method for municipal bridges. Background Technology

[0002] Chinese utility model patent CN222865919U discloses a road and bridge settlement displacement detection device, belonging to the technical field of detection devices. It includes a foundation and a road and bridge pier. A monitoring box is fixedly installed on the upper surface of the foundation, located on one side of the road and bridge pier. A fixing block is fixedly installed on the outer wall of the road and bridge pier near the monitoring box. An L-shaped bracket is fixedly installed on the outer wall of one side of the fixing block. This application uses the fixing block to fix the L-shaped bracket and the road and bridge pier together, so that when the bridge settles, it moves downwards along with the L-shaped bracket. When the L-shaped bracket moves downwards, it drives a rotating rod to rotate, adjusting the position of the moving block. By observing the movement distance of the moving block on a scale, the drop height of the bridge structure can be read. When the lower end of the L-shaped bracket continues to move downwards and comes into contact with a pressure sensor, it indicates that the bridge settlement distance is about to exceed the reasonable range. An alarm signal is sent through the signal processing module to alert the bridge monitoring personnel.

[0003] However, the aforementioned patents have the following drawbacks: The settlement of bridge piers is often accompanied by the settlement of the foundation around the bridge piers. The monitoring box is installed on the foundation around the bridge piers, and the monitoring box will also settle, which will lead to inaccurate settlement detection data of the monitoring box. The photovoltaic panels of the solar power generation device on the monitoring box are exposed to the outside for a long time, making them prone to dust accumulation and damage from foreign objects. Cleaning the photovoltaic panels requires staff to go to the site for cleaning, which requires a lot of manual intervention and is quite troublesome and time-consuming. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention aims to provide a municipal bridge displacement detection device and method. To solve these problems, this invention employs the following technical solution: A displacement detection device for municipal bridges includes a monitoring box and an extension support mechanism. The extension support mechanism includes a U-shaped column and two electrically operated telescopic columns. The two electrically operated telescopic columns are respectively connected to both ends of the U-shaped column. An anti-settlement base is fixed to the lower end of the electrically operated telescopic column and is fixed to the ground. The monitoring box is connected to the U-shaped column. One of the electric telescopic columns is equipped with a photovoltaic panel, a wiping and dust removal mechanism, a drive mechanism, and a liquid storage mechanism. The photovoltaic panel is slidably connected to the electric telescopic column, and the drive mechanism is connected to the photovoltaic panel.

[0005] Optionally, one of the electric telescopic columns has a component cavity, the photovoltaic panel is slidably connected to the inner wall of the component cavity, and the driving mechanism includes a cylinder, the cylinder is fixedly connected to the inner wall of the component cavity, and the photovoltaic panel and the piston rod of the cylinder are fixedly connected.

[0006] Optionally, the liquid storage mechanism includes a water collection cavity formed on one of the electric telescopic columns, the bottom wall of the water collection cavity is connected to the top wall of the component cavity through a water transmission channel, and a water collection plate is fixedly connected to the inner wall of the water collection cavity, the water collection plate extending to the outside of the electric telescopic column.

[0007] Optionally, the wiping and dust removal mechanism includes a second permanent magnet, a T-plate, a pressure strip, a cleaning cotton strip, a fixing strip, and a blocking block. The second permanent magnet and the T-plate are slidably connected to the inner wall of the component cavity. The second permanent magnet is connected to the inner wall of the component cavity through an elastic element. The T-plate is fixed to the second permanent magnet and passes through a water transmission channel. The T-plate has a perforation and extends to the outside of the electric telescopic column. The pressure strip is fixed to the T-plate. The cleaning cotton strip is connected to the inner wall of the component cavity. The fixing strip and the blocking block are both fixed to the inner wall of the component cavity. The fixing strip and the cleaning cotton strip abut against each other. The cleaning cotton strip abuts against the photovoltaic panel. The top wall of the photovoltaic panel is fixed with a first permanent magnet strip.

[0008] Optionally, the cleaning tampon can be detachably connected to the inner wall of the component cavity.

[0009] Optionally, the top wall of the second permanent magnet is higher than the top wall of the first permanent magnet strip.

[0010] Optionally, each end of the C-shaped column has a groove, and an intelligent pressure sensor is embedded in the top wall of the groove. The two electric telescopic columns are slidably connected in the two grooves, with the upper end of the electric telescopic column abutting against the top wall of the groove. A processing module is provided inside the electric telescopic column.

[0011] Optionally, both bends of the U-shaped column are connected with reinforcing bars.

[0012] Optionally, the reinforcing ribs may be made of stainless steel.

[0013] A method for detecting the displacement of municipal bridges, which utilizes a municipal bridge displacement detection device to detect the settlement displacement of bridge piers.

[0014] The present invention has the following beneficial effects: To address the issue of inaccurate measurements caused by the synchronous settlement of the detection benchmark with the foundation in existing technologies, an extended support mechanism is implemented. This mechanism uses a U-shaped column and two electrically operated telescopic columns to form a cross-regional support structure, with anti-settlement bases installed at the bottom of the electric telescopic columns. The overall support points are positioned on stable ground far from the area affected by bridge pier settlement. Simultaneously, intelligent pressure sensors are installed at the connection points between the U-shaped and electric telescopic columns, working in conjunction with the internal processing module of the electric telescopic columns to achieve adaptive height adjustment. This ensures that the support benchmark of the monitoring box does not change with the settlement of the foundation around the bridge pier. In the event of localized ground settlement, the electric telescopic columns automatically compensate for the height and maintain the force balance of the U-shaped column, preventing structural tilting and measurement benchmark drift. This significantly improves the accuracy, stability, and long-term reliability of bridge displacement detection. To address the issues of dust accumulation on photovoltaic panels and reliance on manual cleaning in existing technologies, a dust removal mechanism is integrated into an electric telescopic column. The magnetic linkage between permanent magnet strip one and permanent magnet two controls the opening and closing of the water transfer channel, triggering water supply and wet wiping during the extension process and dry wiping and water squeezing during the retraction process. This achieves automatic wet and dry wiping cycle cleaning of the photovoltaic panel, continuously removing surface dust without manual intervention and preventing material degradation caused by moisture retention. Furthermore, when not in operation, the panel can be retracted into the component cavity for protection, improving photovoltaic power generation efficiency, reducing maintenance costs, and enhancing the device's environmental adaptability. Attached Figure Description

[0015] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0016] Figure 1 This is a structural schematic diagram of a municipal bridge displacement detection device and method according to the present invention; Figure 2 This is a cross-sectional view of one of the electrically operated telescopic columns in this invention; Figure 3 This is a schematic diagram of the component cavity in this invention; Figure 4 This is a schematic diagram of the wiping and dust removal mechanism and the driving mechanism in this invention; Figure 5 This is a schematic diagram of the connection between the U-shaped column and one of the electrically operated telescopic columns in this invention.

[0017] Attached reference numerals: 1. Monitoring box; 2. C-shaped column; 3. Reinforcing rib; 4. Electric telescopic column; 5. Anti-settlement base; 6. Water collection chamber; 7. Water collection tray; 8. Cylinder; 9. Photovoltaic panel; 10. Component cavity; 11. Water transmission channel; 12. Permanent magnet strip one; 13. Permanent magnet two; 14. Elastic element one; 15. T-plate; 16. Pressure strip; 17. Cleaning cotton strip; 18. Fixing strip; 19. Perforation; 20. Blocking block; 21. Intelligent pressure sensor. Detailed Implementation

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

[0019] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the addition of "a," "b," "c," and "d" after the component names is for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] like Figures 1-5As shown, a municipal bridge displacement detection device includes a monitoring box 1 and an extension support mechanism. The extension support mechanism includes a U-shaped column 2 and two electrically operated telescopic columns 4, which are respectively connected to both ends of the U-shaped column 2. An anti-settlement base 5 is fixedly connected to the lower end of the electrically operated telescopic column 4 and is fixed to the ground. The monitoring box 1 is connected to the U-shaped column 2. One of the electrically operated telescopic columns 4 is equipped with a photovoltaic panel 9, a wiping and dust removal mechanism, a drive mechanism, and a liquid storage mechanism. The photovoltaic panel 9 is slidably connected to the electrically operated telescopic column 4, and the drive mechanism is connected to the photovoltaic panel 9, thereby realizing the construction of a stable support system away from the settlement area of ​​the bridge pier and realizing the integrated function of power supply and self-cleaning of the device.

[0022] Furthermore, one of the electric telescopic columns 4 has a component cavity 10, the photovoltaic panel 9 is slidably connected to the inner wall of the component cavity 10, and the driving mechanism includes a cylinder 8, which is fixedly connected to the inner wall of the component cavity 10. The photovoltaic panel 9 and the piston rod of the cylinder 8 are fixedly connected, thereby realizing the switching between driving the photovoltaic panel 9 to extend for work and to retract for protection, thus improving environmental adaptability.

[0023] Regarding the liquid storage mechanism, it includes a water collection chamber 6 located on one of the electrically retractable columns 4. The bottom wall of the water collection chamber 6 is connected to the top wall of the component cavity 10 via a water transmission channel 11. A water collection tray 7 is fixedly attached to the inner wall of the water collection chamber 6, extending to the outside of the electrically retractable column 4. This mechanism is used to collect and store rainwater and transport it to a clean area, thereby achieving the recycling of water resources.

[0024] Regarding the wiping and dust removal mechanism, it includes a permanent magnet 13, a T-plate 15, a pressure strip 16, a cleaning cotton strip 17, a fixing strip 18, and a blocking block 20. The permanent magnet 13 and the T-plate 15 are slidably connected to the inner wall of the component cavity 10. The permanent magnet 13 is connected to the inner wall of the component cavity 10 through an elastic element 14. The T-plate 15 is fixed to the permanent magnet 13 and passes through the water transmission channel 11. A perforation 19 is provided on the T-plate 15, which extends to the outside of the electric telescopic column 4. The pressure strip 16 is fixed to the T-plate 15. The cleaning cotton strip 17 is connected to the inner wall of the component cavity 10. The fixing strip 18 and the blocking block 20 are both fixed to the inner wall of the component cavity 10. The fixing strip 18 and the cleaning cotton strip 17 abut against each other. The cleaning cotton strip 17 abuts against the photovoltaic panel 9. A permanent magnet strip 12 is fixed to the top wall of the photovoltaic panel 9. It enables rainwater utilization and automatic water supply for wet and dry wiping of photovoltaic panels 9, as well as water circuit opening and closing control, thereby improving dust removal efficiency.

[0025] To facilitate the replacement and maintenance of the cleaning tampons 17 and improve ease of use, the cleaning tampons 17 are detachably connected to the inner wall of the component cavity 10.

[0026] It is worth noting that the top wall of the second permanent magnet 13 is higher than the top wall of the first permanent magnet strip 12.

[0027] Preferably, both ends of the C-shaped column 2 are provided with grooves, and intelligent pressure sensors 21 are embedded in the top walls of the grooves. The two electric telescopic columns 4 are slidably connected in the two grooves respectively, with the upper ends of the electric telescopic columns 4 abutting against the top walls of the grooves. A processing module is provided inside the electric telescopic columns 4. This enables real-time detection of the support force and allows for adaptive adjustment of the electric telescopic columns 4, maintaining structural stability.

[0028] To enhance the structural strength of the C-shaped column 2, reinforcing bars 3 are connected to both bends of the C-shaped column 2.

[0029] In the selection of materials, the reinforcing rib 3 is made of stainless steel.

[0030] A method for detecting the displacement of municipal bridges, which utilizes a municipal bridge displacement detection device to detect the settlement displacement of bridge piers.

[0031] The complete working principle of this invention: The detection device is installed as follows: Two electric telescopic columns 4 are fixed on the ground away from the area affected by bridge pier settlement. The anti-settlement base 5 at the bottom of the electric telescopic column 4 is connected to the ground. The preferred connection steps are: survey the ground at the installation location, select an area away from the bridge pier foundation that is geologically stable and not prone to settlement as the support point, clean and level the ground at the installation location to ensure that the ground at the installation location is flat and has sufficient bearing capacity, and then carry out foundation construction at the selected location. Pre-embedded steel plates or concrete foundations can be used. Installation holes are excavated in the ground, the pre-embedded parts are placed in the holes and concrete is poured to form a high-strength fixed foundation. After the concrete reaches the design strength, the anti-settlement base 5 is placed on the foundation and rigidly connected to the pre-embedded parts by high-strength bolts or welding, so that the anti-settlement base 5 and the ground form a stable integral structure.

[0032] Align the two grooves at both ends of the C-shaped column 2 with the upper ends of the two electric telescopic columns 4 and insert them for sliding connection. The upper end of the electric telescopic column 4 abuts against the top wall of the groove, so that the intelligent pressure sensor 21 on the top wall of the groove can detect the pressure data between the electric telescopic column 4 and the groove in real time. Connect the fixing block of the monitoring box 1 to the bridge pier (the connection method refers to the existing technology).

[0033] When the detection device is working: The structure of the monitoring box 1 is based on the existing technology, that is, the monitoring box 1 is equipped with components such as a fixed block, an L-shaped bracket, and a moving block.

[0034] When the bridge pier settles, the pier causes the fixed block on the monitoring box 1 to move. By observing the scale, the staff can read the distance the moving block has moved, thus conveniently and accurately reading the height of the bridge's main body's descent.

[0035] Since the two anti-settlement bases 5 are far from the foundation near the bridge pier, the ground near the two anti-settlement bases 5 will not be affected by the settlement of the bridge pier. Therefore, the position of the monitoring box 1 will not move, which greatly improves the accuracy of the monitoring box 1.

[0036] If the ground connected to one of the anti-settlement bases 5 settles, the electric telescopic column 4 on that anti-settlement base 5 will also move downwards. The pressure between the upper end of the electric telescopic column 4 and the intelligent pressure sensor 21 will change, and the pressure data detected by the intelligent pressure sensor 21 will change significantly. When the processing module on the electric telescopic column 4 recognizes the significant change in pressure data, the processing module controls the electric telescopic column 4 to extend, thereby moving the upper end of the electric telescopic column 4 upwards. This restores the pressure between the upper end of the electric telescopic column 4 and the inner wall of the groove to an appropriate range, so that the electric telescopic column 4 can effectively support the C-shaped column 2, prevent the other electric telescopic column 4 from being overloaded, and also prevent the C-shaped column 2 from tilting or shifting due to unbalanced forces on both sides.

[0037] The data transmission method between the processing module and the smart pressure sensor 21 can be either wired or wireless.

[0038] During rainy days, the water collection tray 7 can collect rainwater. The rainwater collected by the water collection tray 7 enters the water collection chamber 6 for storage, realizing rainwater utilization, environmental protection and energy saving. The T-shaped plate 15 blocks the water transmission channel 11 to prevent rainwater from flowing out.

[0039] In terms of power supply and environmental adaptability, the photovoltaic panel 9 installed on the electric telescopic column 4 provides power support for the entire testing device. The photovoltaic panel 9 is driven by the cylinder 8 to extend and retract within the component cavity 10: during daytime operation, the cylinder 8 drives the photovoltaic panel 9 to extend to improve the light reception efficiency; in inclement weather or at night, the cylinder 8 drives the photovoltaic panel 9 to retract into the component cavity 10, thereby providing protection.

[0040] During the rightward extension of the photovoltaic panel 9, permanent magnet strip 12 and permanent magnet 13 are magnetically connected. Permanent magnet 13, T-plate 15, and pressure strip 16 overcome the elastic force of elastic element 14 and move to the right. The perforation 19 and water transmission channel 11 are connected. Rainwater in the water collection chamber 6 flows through the perforation 19 to the cleaning cotton strip 17 to wet it. The wetted cleaning cotton strip 17 cleans and wipes the top wall of the photovoltaic panel 9, removing dust and impurities, improving light absorption efficiency and photoelectric conversion rate. After permanent magnet 13 moves to the right and abuts against the blocking block 20, the photovoltaic panel 9 and permanent magnet strip 12 continue to move to the right. After detaching from the magnetic connection with permanent magnet 13, permanent magnet 13 quickly moves to the left and resets under the elastic force of elastic element 14. T-plate 15 re-seals water transmission channel 11 to prevent rainwater loss and waste. Pressure strip 16 impacts cleaning cotton strip 17, and cleaning cotton strip 17, together with fixing strip 18, squeezes cleaning cotton strip 17, thereby squeezing out the water inside cleaning cotton strip 17, reducing water retention inside cleaning cotton strip 17, effectively preventing mildew, odor or material performance degradation caused by long-term dampness in cleaning cotton strip 17, thereby extending the service life of cleaning cotton strip 17 and improving the continuous operation of the device.

[0041] During the process of moving the photovoltaic panel 9 to the left for storage, the cleaning cotton strip 17 performs a preliminary dry wipe on the top wall of the photovoltaic panel 9, which, combined with the wet wipe when the photovoltaic panel 9 moves to the right and extends, forms a dual cleaning function of dry wiping and wet wiping.

[0042] Beneficial effects of this invention: To address the problem of inaccurate measurements caused by the synchronous settlement of the detection benchmark with the foundation in existing technologies, an extended support mechanism is set up. This mechanism utilizes a U-shaped column 2 and two electrically operated telescopic columns 4 to form a cross-regional support structure. An anti-settlement base 5 is installed at the bottom of the electrically operated telescopic columns 4, placing the overall support point on stable ground far from the area affected by bridge pier settlement. Simultaneously, an intelligent pressure sensor 21 is installed at the connection between the U-shaped column 2 and the electrically operated telescopic columns 4, working in conjunction with the internal processing module of the electrically operated telescopic columns 4 to achieve adaptive height adjustment. This ensures that the support benchmark of the monitoring box 1 does not change with the settlement of the foundation around the bridge pier. When local ground settlement occurs, the electrically operated telescopic columns 4 automatically compensate for the height and maintain the force balance of the U-shaped column 2, preventing structural tilting and measurement benchmark drift, significantly improving the accuracy, stability, and long-term reliability of bridge displacement detection. To address the problem of dust accumulation in existing photovoltaic panels and reliance on manual cleaning, a dust removal mechanism is integrated into the electric telescopic column 4. The magnetic linkage between permanent magnet strip 12 and permanent magnet 2 is used to control the opening and closing of the water transmission channel 11. This triggers water supply and wet wiping actions during the extension of the photovoltaic panel 9, and completes dry wiping and water squeezing reset during the retraction process. This achieves automatic wet and dry wiping cycle cleaning of the photovoltaic panel 9, continuously removing surface dust without manual intervention and preventing material deterioration caused by moisture retention. At the same time, it can be stored in the component cavity 10 for protection when not in operation, which improves photovoltaic power generation efficiency, reduces maintenance costs, and enhances the environmental adaptability of the device.

[0043] The components, modules, mechanisms, and devices in this invention that are not described in detail are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A municipal bridge displacement detection device comprising a monitoring box (1), characterized in that, It also includes an extension support mechanism, which includes a U-shaped column (2) and two electric telescopic columns (4). The two electric telescopic columns (4) are connected to both ends of the U-shaped column (2) respectively. The lower end of the electric telescopic column (4) is fixed with an anti-settlement base (5). The anti-settlement base (5) is fixed to the ground. The monitoring box (1) is connected to the U-shaped column (2). One of the electric telescopic columns (4) is equipped with a photovoltaic panel (9), a wiping and dust removal mechanism, a drive mechanism and a liquid storage mechanism. The photovoltaic panel (9) is slidably connected to the electric telescopic column (4), and the drive mechanism is connected to the photovoltaic panel (9).

2. A municipal bridge displacement detection device according to claim 1, characterized in that, in one of the following... The electric telescopic column (4) has a component cavity (10) and the photovoltaic panel (9) is slidably connected to the inner wall of the component cavity (10). The driving mechanism includes a cylinder (8) which is fixed to the inner wall of the component cavity (10). The photovoltaic panel (9) and the piston rod of the cylinder (8) are fixedly connected.

3. The displacement detection device for municipal bridges according to claim 2, characterized in that, The liquid storage mechanism includes a water collection cavity (6) opened on one of the electric telescopic columns (4). The bottom wall of the water collection cavity (6) is connected to the top wall of the component cavity (10) through a water transmission channel (11). A water collection plate (7) is fixed to the inner wall of the water collection cavity (6) and extends to the outside of the electric telescopic column (4).

4. The displacement detection device for municipal bridges according to claim 3, characterized in that, The wiping and dust removal mechanism includes a second permanent magnet (13), a T-plate (15), a pressure strip (16), a cleaning cotton strip (17), a fixing strip (18), and a blocking block (20). The second permanent magnet (13) and the T-plate (15) are slidably connected to the inner wall of the component cavity (10). The second permanent magnet (13) is connected to the inner wall of the component cavity (10) through an elastic element (14). The T-plate (15) is fixed to the second permanent magnet (13). The T-plate (15) passes through the water transmission channel (11). A perforation (19) is provided on the plate (15). The T-shaped plate (15) extends to the outside of the electric telescopic column (4). The pressure strip (16) is fixed to the T-shaped plate (15). The cleaning cotton strip (17) is connected to the inner wall of the component cavity (10). The fixing strip (18) and the blocking block (20) are both fixed to the inner wall of the component cavity (10). The fixing strip (18) and the cleaning cotton strip (17) abut against each other. The cleaning cotton strip (17) and the photovoltaic panel (9) abut against each other. A permanent magnet strip (12) is fixed to the top wall of the photovoltaic panel (9).

5. A municipal bridge displacement detection device according to claim 4, characterized in that, The cleaning tampon (17) is detachably connected to the inner wall of the component cavity (10).

6. A municipal bridge displacement detection device according to claim 5, characterized in that, The top wall of the second permanent magnet (13) is higher than the top wall of the first permanent magnet (12).

7. A municipal bridge displacement detection device according to claim 1, characterized in that, The C-shaped column (2) has grooves at both ends, and a smart pressure sensor (21) is embedded in the top wall of the groove. The two electric telescopic columns (4) are slidably connected in the two grooves respectively. The upper end of the electric telescopic column (4) abuts against the top wall of the groove. A processing module is provided inside the electric telescopic column (4).

8. A municipal bridge displacement detection device according to claim 1, characterized in that, The two bends of the zigzag column (2) are each connected with reinforcing bars (3).

9. A municipal bridge displacement detection device according to claim 1, characterized in that, The reinforcing rib (3) is made of stainless steel.

10. A method for detecting displacement of municipal bridges, characterized in that, The municipal bridge displacement detection device according to any one of claims 1-9 is used to detect the settlement displacement of bridge piers.

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