A bridge pier settlement monitoring device

By designing an adaptive active vertical guide traction measurement mechanism and an angle measurement component for a bridge pier settlement monitoring device, the problem of comprehensive monitoring of bridge pier settlement and tilt was solved, device failure was avoided, and the safety and comprehensiveness of monitoring were improved.

CN224499471UActive Publication Date: 2026-07-14GUANGZHOU CHENG AN LUQIAO DETECTION CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGZHOU CHENG AN LUQIAO DETECTION CO LTD
Filing Date
2025-07-01
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing bridge pier settlement monitoring devices are insufficient to comprehensively monitor the settlement and tilt of bridge piers, and are prone to failure when bridge piers tilt.

Method used

A bridge pier settlement monitoring device was designed, comprising a fixed base, an L-shaped support, an adaptive movable vertical guide traction measurement mechanism, a connecting rod, a fixed plate, a transparent box, and an angle measurement component. The device utilizes a universal support component and a universal traction component to achieve adaptive following of tilt, preventing the entire device from tilting or being squeezed. Combined with the angle measurement component, it enables multi-directional tilt angle monitoring.

Benefits of technology

It enables comprehensive monitoring of bridge pier settlement and tilting, avoids monitoring device failure, improves the comprehensiveness and safety of monitoring, and facilitates subsequent processing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of pier settlement monitoring devices, including the settlement monitoring device body of being installed in pier one side, the settlement monitoring device body includes: fixed seat, top fixedly connected with L-shaped support;Self-adapting movable vertical guide pulling measurement mechanism, is embedded and fixed on the top inner wall of L-shaped support;Connecting rod, fixedly connected in self-adapting movable vertical guide pulling measurement mechanism left side.The utility model is provided with a series of structures, can monitor pier settlement and when its inclination can be integrated self-adapting follow the inclination mode of measuring piece, the stress phenomenon of whole monitoring device and ground connection is resolved, avoid the whole monitoring device whole body is pulled and tilted and rises or is pressed and squeezed and is broken to cause monitoring work failure phenomenon, satisfy settlement monitoring demand, and it is convenient to monitor inclination angle in pier inclination settlement multidirection, improve monitoring comprehensiveness, facilitate personnel better understanding pier settlement state to facilitate subsequent accurate processing, improve use safety.
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Description

Technical Field

[0001] This utility model relates to the field of bridge pier settlement monitoring technology, specifically a bridge pier settlement monitoring device. Background Technology

[0002] A complete bridge mainly consists of a superstructure, a substructure, and a bearing system. The substructure mainly includes piers, abutments, and foundations. As structural components supporting the superstructure, piers transfer dead loads and live loads such as those from vehicles to the foundations, thereby ensuring the safety and stability of the bridge. However, under load, soil layers at a certain depth will undergo varying degrees of compression deformation, leading to pier settlement. To prevent settlement from causing damage and to determine settlement control measures, it is necessary to regularly monitor and provide feedback on the settlement deformation data of the piers.

[0003] Chinese patent CN220062935U discloses a bridge settlement monitoring device. This device consists of a mounting base, a mounting plate, movable slide rails, a movable monitoring component, and a bridge connecting component. The mounting plate has a mounting groove at its vertical center. Two sets of movable slide rails are symmetrically arranged on both sides of the mounting groove. Each set of slide rails has a monitoring scale attached to its surface. The movable monitoring component is slidably mounted on the two sets of slide rails on both sides. One side of the bridge connecting component is connected and fixed to the bridge, while the other side of the bridge connecting component passes through the mounting groove and connects to the movable monitoring component. By comparing the monitoring scales on the movable monitoring component and the movable slide rails, the magnitude of the bridge settlement can be observed.

[0004] While the aforementioned technologies enable settlement monitoring and facilitate regular observation and recording of settlement scale readings for settlement assessment, they still present the following problems in practical use: 1. In addition to settlement, bridge piers may tilt due to human, construction, or environmental factors. Tilt is also a major factor affecting the safe use of bridge piers, and comprehensive monitoring is difficult to achieve solely through vertical monitoring; 2. Relying solely on fixed vertical connections for monitoring inevitably leads to the monitoring device tilting or being damaged when the bridge pier tilts, causing monitoring to fail and failing to meet settlement monitoring requirements. Therefore, this application proposes a bridge pier settlement monitoring device to address the aforementioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a bridge pier settlement monitoring device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bridge pier settlement monitoring device, comprising a settlement monitoring device body installed on one side of the bridge pier, the settlement monitoring device body comprising:

[0007] The fixed base has an L-shaped support fixedly connected to the top;

[0008] An adaptive movable vertical guide tensioning and measuring mechanism is embedded and fixed on the top inner wall of the L-shaped support;

[0009] The connecting rod is fixedly connected to the left side of the adaptive movable vertical guide traction measurement mechanism;

[0010] The fixing plate is fixedly installed on the right side of the pier with four bolts and is fixedly connected to the left end of the connecting rod;

[0011] A transparent box is fixedly connected to the front side of the connecting rod;

[0012] Angle measuring components, consisting of two sets, are fixedly connected to the inner top wall of the transparent box in different orientations; the two angle measuring components are used to measure the tilt angle in different directions when the pier tilts, causing the connecting rod and the transparent box to tilt.

[0013] The adaptive active vertical guide tension measurement mechanism includes:

[0014] The universal support assembly is embedded and fixed on the inner wall of the top of the L-shaped support;

[0015] The measuring rod is fixedly connected to the bottom of the universal support assembly, and the outer side of the measuring rod is provided with a vertical guide sleeve.

[0016] The universal traction assembly is fixedly connected to the left side of the vertical guide sleeve and to the right end of the connecting rod. The universal support assembly is used to provide movable support for the measuring rod. The vertical guide sleeve is used to slide up and down the measuring rod when the bridge pier settles and the connecting rod moves down. The downward movement of the vertical guide sleeve changes the position of its bottom aligned with the scale of the measuring rod, allowing personnel to make settlement judgments. The universal traction assembly is used to pull or push the vertical guide sleeve to change its lateral position when the bridge pier tilts and the connecting rod tilts. The universal support assembly also provides the condition for the measuring rod to tilt laterally along with the vertical guide sleeve.

[0017] Preferably, the universal support assembly includes a first spherical sleeve that is embedded and fixed on the inner wall of the top of the L-shaped support. The bottom of the first spherical sleeve is set as an opening. A first universal ball is movably fitted inside the first spherical sleeve. The bottom of the first universal ball is fixedly connected to the top of the measuring rod.

[0018] Preferably, the universal joint assembly includes a second spherical sleeve fixedly connected to the left side of the vertical guide sleeve. The left side of the second spherical sleeve is set as an opening. A second universal ball is movably fitted inside the second spherical sleeve. The left side of the second universal ball is fixedly connected to the right end of the connecting rod.

[0019] Preferably, the angle measuring component includes a semicircular protractor fixedly connected to the inner wall of the top of the transparent box. The two semicircular protractors are arranged in the left-right and front-back directions, respectively. Angle scale lines are provided on the front side of the left semicircular protractor and the right side of the right semicircular protractor. Support shafts are fixedly connected to the top front side of the left semicircular protractor and the top right side of the right semicircular protractor. A rotating sleeve is rotatably sleeved on the support shaft. A counterweight is fixedly connected to the bottom of the rotating sleeve. A pointer is fixedly connected to the bottom of the counterweight. The pointer is engaged with the corresponding angle scale line.

[0020] Preferably, the top of the fixing base has six mounting holes in a rectangular shape.

[0021] Preferably, bolt mounting holes are provided at all four corners of the right side of the fixing plate.

[0022] Preferably, the transparent box body consists of a transparent box with an opening on the rear side and a cover plate fixed to the rear side of the transparent box by four screws, and the rear side of the cover plate is fixedly connected to the front side of the connecting rod.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. By using a combination of fixed plates, connecting rods, fixed seats, L-shaped supports, universal bracing components, measuring rods, vertical guide sleeves, and universal traction components, the settlement of bridge piers can be monitored.

[0025] Furthermore, by utilizing the universal support assembly to provide movable support for the measuring rod, and in conjunction with the universal traction assembly to form a movable traction between the vertical guide sleeve and the connecting rod, the measuring component can adaptively follow the tilt when the pier tilts. This resolves the stress phenomenon at the connection between the entire monitoring device and the ground, and avoids the phenomenon that the entire monitoring device is pulled, tilted, or squeezed and damaged, which would cause the monitoring work to fail, thus meeting the settlement monitoring requirements.

[0026] 2. By using the connecting rods, fixing plates, angle measuring components, and transparent boxes, the tilt angle can be monitored from multiple directions when the bridge pier tilts and settles, improving the comprehensiveness of the monitoring and providing monitoring personnel with a better understanding of the bridge pier's settlement status, so that personnel can take better measures in the future and improve the safety of use.

[0027] This utility model, through a series of structures, enables the monitoring of bridge pier settlement. When the pier tilts, the measuring components can adaptively follow the tilt, thus mitigating the stress on the connection between the monitoring device and the ground. This prevents the entire monitoring device from being pulled, tilted, or damaged by tilting and squeezing, which could lead to monitoring failure. It meets the needs of settlement monitoring and facilitates multi-directional monitoring of tilt angles when the bridge pier is tilting and settling, improving the comprehensiveness of monitoring. This allows personnel to better understand the settlement status of the bridge pier for accurate subsequent handling and enhances safety. Attached Figure Description

[0028] Figure 1 This is a cross-sectional structural diagram of a bridge pier settlement monitoring device proposed in this utility model, installed on one side of a bridge pier.

[0029] Figure 2 This is a three-dimensional structural diagram of a bridge pier settlement monitoring device proposed in this utility model;

[0030] Figure 3 for Figure 2 A schematic diagram of the rear view structure;

[0031] Figure 4 for Figure 1 A magnified structural diagram of part A in the diagram.

[0032] In the diagram: 100, pier; 1, fixed seat; 2, L-shaped support; 201, first spherical sleeve; 202, first universal ball joint; 203, measuring rod; 204, vertical guide sleeve; 205, second universal ball joint; 206, second spherical sleeve; 3, connecting rod; 301, fixed plate; 4, transparent box; 401, semi-circular protractor; 402, support shaft; 403, rotating sleeve; 404, counterweight; 405, pointer. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] like Figures 1 to 4 As shown in the figure, the bridge pier settlement monitoring device proposed in this embodiment includes a settlement monitoring device body installed on one side of the bridge pier 100. The settlement monitoring device body includes:

[0035] The fixed base 1 has an L-shaped support 2 fixedly connected to its top. The top of the fixed base 1 is rectangular and has six mounting holes.

[0036] An adaptive movable vertical guide traction measurement mechanism is embedded and fixed on the top inner wall of the L-shaped support 2;

[0037] Connecting rod 3 is fixedly connected to the left side of the adaptive movable vertical guide traction measurement mechanism;

[0038] The fixing plate 301 is fixedly installed on the right side of the pier 100 by four bolts and is fixedly connected to the left end of the connecting rod 3. Bolt mounting holes are provided at the four corners of the right side of the fixing plate 301.

[0039] The transparent box 4 is fixedly connected to the front side of the connecting rod 3. The transparent box 4 consists of a transparent box with an opening on the rear side and a cover plate fixed to the rear side of the transparent box by four screws. The rear side of the cover plate is fixedly connected to the front side of the connecting rod 3.

[0040] Angle measuring components, consisting of two sets, are fixedly connected to the top inner wall of the transparent box 4 in different orientations; the two angle measuring components are used to measure the tilt angle in different directions when the pier 100 tilts, causing the connecting rod 3 and the transparent box 4 to tilt.

[0041] The adaptive active vertical guide tension measurement mechanism includes:

[0042] The universal support assembly is embedded and fixed on the top inner wall of the L-shaped support 2;

[0043] The measuring rod 203 is fixedly connected to the bottom of the universal support assembly, and the outer side of the measuring rod 203 is provided with a vertical guide sleeve 204.

[0044] The universal connecting component is fixedly connected to the left side of the vertical guide sleeve 204 and to the right end of the connecting rod 3. The universal support component is used to provide movable support for the measuring rod 203. The vertical guide sleeve 204 is used to slide up and down the measuring rod 203 when the pier 100 settles and causes the connecting rod 3 to move down. The downward movement of the vertical guide sleeve 204 changes the position of its bottom aligned with the scale of the measuring rod 203 for personnel to make settlement judgments. The universal connecting component is used to pull or push the vertical guide sleeve 204 to change its lateral position when the pier 100 tilts and causes the connecting rod 3 to tilt. The universal support component is also used to provide the measuring rod 203 with the condition that it can tilt laterally along with the vertical guide sleeve 204.

[0045] Specifically, the universal support assembly includes a first spherical sleeve 201 that is embedded and fixed on the top inner wall of the L-shaped support 2. The bottom of the first spherical sleeve 201 is set as an opening. A first universal ball 202 is movably sleeved inside the first spherical sleeve 201. The bottom of the first universal ball 202 is fixedly connected to the top of the measuring rod 203.

[0046] In this embodiment: the first universal ball 202 and the first spherical sleeve 201 are configured to cooperate. The first universal ball 202 can rotate in multiple directions within the first spherical sleeve 201 to achieve movable support for the measuring rod 203. In addition, the first spherical sleeve 201 is used to fasten and position the first universal ball 202, so that the vertical displacement of the measuring rod 203 will not occur. This provides only the condition for the measuring rod 203 to swing and tilt, avoiding the phenomenon of jamming when the vertical guide sleeve 204 follows the connecting rod 3 to tilt laterally.

[0047] Furthermore, the universal joint assembly includes a second spherical sleeve 206 fixedly connected to the left side of the vertical guide sleeve 204. The left side of the second spherical sleeve 206 is set as an opening. A second universal ball 205 is movably sleeved inside the second spherical sleeve 206. The left side of the second universal ball 205 is fixedly connected to the right end of the connecting rod 3.

[0048] In this embodiment: the second spherical sleeve 206 and the second universal ball joint 205 cooperate to allow the connecting rod 3 to slide downwards along with the pier 100 as the connecting rod 3 moves downwards. The connecting rod 3 then drives the vertical guide sleeve 204 to slide downwards on the measuring rod 203 via the second spherical sleeve 206 and the second universal ball joint 205, thus measuring the settlement. Although the second spherical sleeve 206 and the second universal ball joint 205 are movably connected, the vertical guide sleeve 204 can only slide vertically against the outside of the measuring rod 203. Furthermore, the measuring rod 203 is suspended and cannot move downwards, and the tension created by the connecting rod 3 prevents the measuring rod 203 from tilting when the pier 100 is not tilted. It can swing on its own, thus preventing the vertical guide sleeve 204 from tilting and displacing independently, ensuring the settlement measurement work; in addition, when the pier 100 tilts and causes the connecting rod 3 to tilt, the connecting rod 3 tilts to the left, right, front or back, respectively, causing the second universal ball 205 to rotate in the corresponding direction within the second spherical sleeve 206. When the connecting rod 3 follows the tilting displacement of the pier, it also drives the measuring rod 203 to rotate and tilt in the corresponding direction through the second spherical sleeve 206, the second universal ball 205 and the vertical guide sleeve 204 in sequence. By using the movable connection to follow the tilt, it avoids the phenomenon of the connecting rod 3 breaking and jamming, which would cause the entire device to be pulled, squeezed and displaced by the pier.

[0049] Furthermore, the angle measuring component includes a semicircular protractor 401 fixedly connected to the inner wall of the top of the transparent box 4. The two semicircular protractors 401 are arranged in the left-right and front-back directions respectively. Angle scale lines are provided on the front side of the left semicircular protractor 401 and the right side of the right semicircular protractor 401. Support shafts 402 are fixedly connected to the top front side of the left semicircular protractor 401 and the top right side of the right semicircular protractor 401. A rotating sleeve 403 is rotatably sleeved on the support shaft 402. A bearing is fixedly sleeved inside the rotating sleeve 403. The inner ring of the bearing is fixedly sleeved with the outer side of the corresponding support shaft, which achieves the effect of rotating the rotating sleeve 403. A counterweight 404 is fixedly connected to the bottom of the rotating sleeve 403. A pointer 405 is fixedly connected to the bottom of the counterweight 404. The pointer 405 cooperates with the corresponding angle scale line.

[0050] In this embodiment: the semicircular protractor 401, protractor scale, support shaft 402, rotating sleeve 403, counterweight 404, and pointer 405 work together so that when the pier 100 tilts, causing the connecting rod 3 to tilt as well, the connecting rod 3 will cause the transparent box 4 fixed to it to tilt as well. The transparent box 4 will cause the two semicircular protractors 401 to tilt as well. When tilting to the left or right, under the weight of the counterweight 404 on the left side, the counterweight 404 on the left side will cause the pointer 405 on the left side to automatically maintain a vertical state. At this time, when the semicircular protractor 401 on the left side rotates and tilts, it will cause the corresponding support shaft 402 to rotate adaptively within the rotating sleeve 403. At this time, the pointer 405 on the left side will indicate the left... When the position of the angle scale line on the semicircular protractor 401 on the side changes, the left and right tilt state can be determined by periodically recording the indicated value. When tilting forward or backward, under the action of the weight of the counterweight 404 on the right side, the counterweight 404 on the right side drives the pointer 405 on the right side to automatically maintain the vertical state. At this time, when the semicircular protractor 401 on the right side rotates and tilts, it drives the corresponding support shaft 402 to rotate adaptively in the rotating sleeve 403. At this time, the pointer 405 on the right side indicates that the position of the angle scale line on the semicircular protractor 401 on the right side changes. By periodically recording the indicated value, the forward and backward tilt state can be determined, realizing the effect of multi-directional monitoring of the tilt angle when the pier 100 tilts and settles.

[0051] The usage method of this embodiment is as follows: When using the pier settlement monitoring device, the fixing plate 301 is fixed to one side of the pier 100 with four bolts. Then, the fixing seat 1 is fixed to the ground outside the pier 100 using external bolts and six mounting holes on the fixing seat 1. When the pier 100 settles, the fixing plate 301 will drive the connecting rod 3 to move downward as a whole. The connecting rod 3 will drive the vertical guide sleeve 204 to slide downward on the measuring rod 203 through the second spherical sleeve 206 and the second universal ball 205. As the vertical guide sleeve 204 moves downward, its bottom changes its alignment with the outside of the measuring rod 203. The scale position is marked, and personnel regularly inspect and record the aligned scale position to know the settlement distance of pier 100, thus achieving the effect of monitoring the settlement of pier 100; in addition, although the second spherical sleeve 206 and the second universal ball 205 are movably connected, the vertical guide sleeve 204 can only slide vertically against the outside of the measuring rod 203, and the measuring rod 203 is suspended and cannot move down, and the tension formed by the connecting rod 3 prevents the measuring rod 203 from swinging on its own when the pier 100 is not tilted, so there will be no phenomenon of the vertical guide sleeve 204 tilting and displacing alone, thus ensuring the settlement measurement work;

[0052] When the pier 100 tilts, the pier 100 tilts as a whole through the fixed plate 301, causing the connecting rod 3 to tilt. When the connecting rod 3 tilts to the left, right, forward, or backward, it causes the second universal ball 205 to rotate in the corresponding direction within the second spherical sleeve 206. When the connecting rod 3 follows the tilting displacement of the pier, it also drives the measuring rod 203 to rotate and tilt in the corresponding direction through the second spherical sleeve 206, the second universal ball 205, and the vertical guide sleeve 204. By using the movable connection to follow the tilt, the phenomenon of the connecting rod 3 breaking and causing the entire device to be pulled, squeezed, and displaced by the pier is avoided. This achieves the method of the measuring component adaptively following the tilt when the pier 100 tilts, which resolves the stress phenomenon at the connection between the entire monitoring device and the ground. This avoids the phenomenon of the entire monitoring device being pulled, tilted, or broken by tilting and squeezing, thus failing the monitoring work and meeting the settlement monitoring requirements.

[0053] When the connecting rod 3 tilts, it also causes the transparent box 4, which is fixed to it, to tilt as well. The transparent box 4 causes the two semicircular protractors 401 to tilt as well. When tilting to the left or right, under the weight of the counterweight 404 on the left, the counterweight 404 causes the pointer 405 on the left to automatically maintain a vertical position. At this time, when the semicircular protractor 401 on the left rotates and tilts, it causes the corresponding support shaft 402 to rotate adaptively within the rotating sleeve 403. At this time, the position of the protractor scale line indicated by the pointer 405 on the left semicircular protractor 401 changes. By periodically recording the indicated value, the left or right tilt state can be determined. When tilting forward or backward, the counterweight on the right... Under the influence of its own weight, the counterweight 404 on the right side drives the pointer 405 on the right side to automatically maintain a vertical position. At this time, when the semicircular protractor 401 on the right side rotates and tilts, it causes the corresponding support shaft 402 to rotate adaptively within the rotating sleeve 403. At this time, the position of the protractor scale line indicated by the pointer 405 on the right side changes. By periodically recording the indicated value, the forward and backward tilting status can be determined, realizing the effect of multi-directional monitoring of the tilting angle when the pier 100 tilts and settles. This improves the comprehensiveness of monitoring and provides monitoring personnel with a better understanding of the settlement status of the pier 100, so that personnel can carry out better subsequent handling and improve the safety of use.

[0054] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bridge pier settlement monitoring device, comprising a settlement monitoring device body installed on one side of a bridge pier (100), characterized in that: The main body of the settlement monitoring device includes: The fixed base (1) has an L-shaped support (2) fixedly connected to the top; An adaptive active vertical guide traction measurement mechanism is embedded and fixed on the top inner wall of the L-shaped support (2); The connecting rod (3) is fixedly connected to the left side of the adaptive movable vertical guide traction measurement mechanism; The fixing plate (301) is fixedly installed on the right side of the pier (100) by four bolts and is fixedly connected to the left end of the connecting rod (3); A transparent box (4) is fixedly connected to the front side of the connecting rod (3); Angle measuring components, consisting of two sets, are fixedly connected to the top inner wall of the transparent box (4) in different orientations; The adaptive active vertical guide tension measurement mechanism includes: The universal support assembly is embedded and fixed on the top inner wall of the L-shaped support (2); The measuring rod (203) is fixedly connected to the bottom of the universal support assembly, and the outer side of the measuring rod (203) is provided with a vertical guide sleeve (204); The universal joint assembly is fixedly connected to the left side of the vertical guide sleeve (204) and fixedly connected to the right end of the connecting rod (3).

2. The bridge pier settlement monitoring device according to claim 1, characterized in that: The universal support assembly includes a first spherical sleeve (201) that is embedded and fixed on the inner wall of the top of the L-shaped support (2). The bottom of the first spherical sleeve (201) is set as an opening. A first universal ball (202) is movably sleeved inside the first spherical sleeve (201). The bottom of the first universal ball (202) is fixedly connected to the top of the measuring rod (203).

3. The bridge pier settlement monitoring device according to claim 1, characterized in that: The universal joint assembly includes a second spherical sleeve (206) fixedly connected to the left side of the vertical guide sleeve (204). The left side of the second spherical sleeve (206) is set as an opening. A second universal ball (205) is movably sleeved inside the second spherical sleeve (206). The left side of the second universal ball (205) is fixedly connected to the right end of the connecting rod (3).

4. The bridge pier settlement monitoring device according to claim 1, characterized in that: The angle measuring component includes a semicircular protractor (401) fixedly connected to the inner wall of the top of the transparent box (4). The two semicircular protractors (401) are arranged in the left-right and front-back directions respectively. Angle scale lines are provided on the front side of the left semicircular protractor (401) and the right side of the right semicircular protractor (401). A support shaft (402) is fixedly connected to the top of the front side of the left semicircular protractor (401) and the top of the right side of the right semicircular protractor (401). A rotating sleeve (403) is rotatably sleeved on the support shaft (402). A counterweight (404) is fixedly connected to the bottom of the rotating sleeve (403). A pointer (405) is fixedly connected to the bottom of the counterweight (404). The pointer (405) is matched with the corresponding angle scale line.

5. The bridge pier settlement monitoring device according to claim 1, characterized in that: The top of the mounting base (1) is rectangular and has six mounting holes.

6. The bridge pier settlement monitoring device according to claim 1, characterized in that: Bolt mounting holes are provided at the four corners of the right side of the fixing plate (301).

7. The bridge pier settlement monitoring device according to claim 1, characterized in that: The transparent box (4) consists of a transparent box with an opening on the rear side and a cover plate fixed to the rear side of the transparent box by four screws. The rear side of the cover plate is fixedly connected to the front side of the connecting rod (3).