Bridge support displacement real-time detection device and method for bridge installation

Abstract

The invention discloses a bridge support displacement real-time detection device for bridge installation and a method thereof. The bridge support displacement real-time detection device comprises a base plate, a plurality of displacement detection mechanisms, an optical strain system, a clamping piece, a movable plate, a moving plate, a rotating plate, a movable piece, a rotating ring plate, an abutting plate, a fixed cylinder, a sleeve rod and a limiting sliding plate control piece. The whole device is clamped into a bridge support padstone, so that the position of a rotating ring plate corresponds to the position of the bridge support padstone, and the position of a displacement detection mechanism corresponds to the position of a bridge support; a threaded rod is rotated, so that a rotating ring plate is clamped and fixed to the side of a bridge support padstone, then an adjusting gear is rotated, a limiting sliding plate drives a movable plate to incline, a displacement detection mechanism inclines, the inclination angle of the displacement detection mechanism is adjusted, and the follow-up displacement detection mechanism abuts against and makes contact with a bridge support at the inclination angle conveniently; and finally, the cylinder is started to move the displacement detection mechanism on the outer surface of the bridge support. The mode is simple to operate, and the displacement detection mechanisms do not need to be adjusted and fixed one by one.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge bearing detection structures, and in particular to a real-time detection device and method for bridge bearing displacement for bridge installation. Background Art

[0002] In bridge engineering, after the cap beam is cast, the bridge bearing pedestal is cast on the top surface of the cap beam, and the bridge bearing is placed stably in the center of the bridge bearing pedestal. Finally, the precast beam slab is placed on the top of the bridge bearing to complete the erection of the bridge.

[0003] When detecting the displacement of a bridge bearing, multiple displacement detection mechanisms need to be placed close to the outer surface of the bridge bearing. The existing real-time detection device for bridge bearing displacement requires adjusting the displacement detection mechanisms one by one to bring them close to the bridge and fix them one by one, which is inconvenient to operate and multiple displacement detection mechanisms cannot be adjusted and fixed at the same time.

[0004] To this end, we propose a real-time detection device and method for bridge bearing displacement for bridge installation. Summary of the invention

[0005] The object of the present invention is to provide a real-time detection device for bridge bearing displacement for bridge installation to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides a real-time detection device for displacement of a bridge bearing for bridge installation, comprising a base plate, on which a plurality of displacement detection mechanisms are movably matched, and on which an optical strain system for measuring the deformation of the outer surface of the bridge bearing is provided; It also includes a clamping member and two movable plates and a moving plate connected and fixed to the displacement detection mechanism, wherein the movable plate is movably penetrated by a rotating plate that is distributed obliquely, and the two rotating plates are rotatably connected to the two ends of the moving plate, and the base plate is provided with a movable member, and the movable moving plate enables the multiple displacement detection mechanisms to move synchronously and press against the outer surface of the bridge support through the movable member; A plurality of rotating ring plates, the ends of which are rotatably connected to a pressing plate, the clamping member is used between two rotating ring plates to make the rotating ring plates rotate and press against the corners of the bridge support pedestal stone, and the pressing plate forms a pressing force between the base plate and the side of the bridge support pedestal stone; The rotating ring plate is slidably matched with a fixed cylinder connected and fixed with the base plate, a sleeve rod is movably sleeved in the fixed cylinder, a limiting slide plate is fixedly connected to the top of the sleeve rod and slides with the movable plate, and a control part for rotating the limiting slide plate is provided on the base plate.

[0007] Preferably, the movable part includes a baffle plate fixedly connected to the base plate, a cylinder is fixedly connected to the baffle plate, an output shaft of the cylinder is fixedly connected to the movable plate, the base plate is a U-shaped structure, fixed plates are fixedly connected at both ends of the base plate, and a movable groove is provided on the fixed plate to slide with the rotating plate.

[0008] Preferably, the clamping member includes two threaded rods connected and fixed to each other, the thread directions of the two threaded rods are arranged in opposite directions, and sliders are threadedly connected to the two threaded rods, the top of the slider is rotatably connected to the end of the rotating ring plate, and the bottom of the slider is rotatably connected to the pressure plate through a torsion spring.

[0009] Preferably, an arc groove for slidingly cooperating with the fixed tube is provided in the middle of the rotating ring plate, and a clamping groove for clamping with the corner of the bridge support pedestal stone is provided on the side of the rotating ring plate.

[0010] Preferably, the clamping member further comprises a connecting plate rotatably connected to the base plate, two ends of the connecting plate are rotatably connected to the ends of the two pressure plates respectively, and the end of the other pressure plate is pressed and fitted with the baffle.

[0011] Preferably, the control member comprises an adjusting gear rotatably connected to the base plate, and the adjusting gear is fixedly connected to a sleeve rod penetrating into the base plate.

[0012] Preferably, the base plate is rotatably connected to a toggle gear passing through the base plate, the pitch circle radius of the toggle gear is smaller than the pitch circle radius of the adjusting gear, and an elastic plate is rotatably connected inside the base plate.

[0013] An operating method of a real-time detection device for bridge bearing displacement for bridge installation, according to the above-mentioned real-time detection device for bridge bearing displacement for bridge installation, the specific operating method includes the following steps: S1, rotating the threaded rod to make the two sliders approach each other, thereby rotating the two rotating ring plates, making the ends of the two rotating ring plates move away from each other, thereby opening the gap between the two rotating ring plates; S2, sliding the movable plate along the rotating plate toward the fixed plate, so that the plurality of displacement detection mechanisms are moved away from each other; S3, insert the entire device through the gap, so that the position of the rotating ring plate corresponds to the position of the bridge support pedestal stone, and the position of the displacement detection mechanism corresponds to the bridge support; S4, rotating the threaded rod in the opposite direction, so that the rotating ring plate is clamped and fixed with the side of the bridge support pedestal, one of the pressing plates presses against the side of the bridge support pedestal, and the other pressing plate presses against the baffle; S5, rotating the adjusting gear, so that the limit slide plate drives the movable plate to tilt, thereby tilting the displacement detection mechanism, adjusting the tilt angle of the displacement detection mechanism, so that the displacement detection mechanism can be pressed against the bridge support at an inclined angle in the future; S6. Start the cylinder to move the displacement detection mechanism to the outer surface of the bridge support.

[0014] Compared with the prior art, the present invention has the following beneficial effects: First, the threaded rod is rotated to make the two sliders approach each other, thereby rotating the two rotating ring plates, making the ends of the two rotating ring plates move away from each other, thereby opening the gap between the two rotating ring plates, and sliding the movable plate along the rotating plate toward the fixed plate, thereby making the multiple displacement detection mechanisms move away from each other; Insert the whole device through the gap so that the position of the rotating ring plate corresponds to the position of the bridge support pad stone, and the position of the displacement detection mechanism corresponds to the bridge support; The threaded rod is rotated in the opposite direction to make the rotating ring plate clamped and fixed with the side of the bridge support pedestal, one pressing plate presses the side of the bridge support pedestal, and the other pressing plate presses on the baffle plate, and then the adjusting gear is rotated to make the limit slide drive the movable plate to tilt, so that the displacement detection mechanism is tilted, and the inclination angle of the displacement detection mechanism is adjusted, so that the subsequent displacement detection mechanism presses and contacts the bridge support at an inclined angle, and finally the cylinder is started to move the displacement detection mechanism to the outer surface of the bridge support; This method is easy to operate and does not require adjusting and fixing multiple displacement detection mechanisms one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the matching structure of the overall structure of the present invention, the bridge support pedestal stone and the bridge support; Figure 2 It is a side view schematic diagram of the matching structure of the overall structure of the present invention, the bridge support pedestal stone and the bridge support; Figure 3 It is a schematic diagram of the split structure of the overall structure of the present invention and the bridge support pedestal stone and the bridge support; Figure 4 It is a schematic diagram of the detachable structure of the rotating plate and the fixed plate of the present invention; Figure 5 It is a schematic diagram of the detachable structure of the limiting slide plate and the rotating ring plate of the present invention; Figure 6 This is a schematic diagram of the structure of the control component of the present invention being separated from the base plate and the rotating ring plate; Figure 7 It is a schematic diagram of the split structure of the fixing cylinder and the sleeve rod of the present invention; Figure 8 It is a schematic diagram of the split structure of a slider and a threaded rod in the present invention; Fig. 9 It is a schematic diagram of the split structure of the threaded rod and another sliding block of the present invention; Fig.10 It is a schematic diagram of the split structure of the pressure plate and the connecting plate of the present invention; Fig.11 It is a schematic diagram of the matching structure of the rotating plate, the movable plate and the fixed plate of the present invention; Fig.12 This is a schematic diagram of the structure of the rotating plate of the present invention being detached from the movable plate and the fixed plate; Fig.13 It is a schematic diagram of the disassembled structure of the movable plate and the limiting slide plate of the present invention.

[0016] In the figure: 1. base plate; 2. displacement detection mechanism; 3. movable plate; 4. moving plate; 5. rotating plate; 6. rotating ring plate; 7. pressure plate; 8. fixed cylinder; 9. sleeve rod; 10. limit slide plate; 11. baffle plate; 12. cylinder; 13. fixed plate; 14. movable groove; 15. threaded rod; 16. slider; 17. arc groove; 18. clamping groove; 19. connecting plate; 20. adjusting gear; 21. toggle gear; 22. elastic plate; 23. limit ring plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 13 The present invention provides a real-time detection device for displacement of a bridge support for bridge installation, comprising: a base plate 1, on which a plurality of displacement detection mechanisms 2 are movably matched, wherein the displacement detection mechanism 2 in the present solution comprises a horizontal displacement sensor and a vertical displacement sensor, and the specific details are as follows: a displacement detection mechanism 2 in a bridge support displacement detection device of the prior art CN210981200U; The displacement detection mechanism 2 is provided with an optical strain system for measuring the deformation of the outer surface of the bridge bearing. The optical strain system in the present application includes a camera, a handheld computer, a telescopic bracket, and a tripod. The camera includes a camera working part, a signal transceiver, a base, and a spherical pan-tilt head. The spherical pan-tilt head is controlled by wirelessly connecting the signal transceiver to the handheld computer to realize the rotation of the camera; the working section of the camera working part is circular, including a high-definition spherical infrared lens with a CMOS image sensor arranged in the center and a plurality of infrared LEDs arranged at the edge of the working section; the camera is fixed on the telescopic bracket, and the telescopic bracket includes a bracket base, a telescopic component, a driving mechanism and a control system. The control system is wirelessly connected to the handheld computer, and the telescopic component is composed of a plurality of sections of telescopic aluminum-magnesium alloy tubes that are overlapped and retractable. For specific technical details, please refer to the bridge bearing deformation disease detection system with publication number CN105091770B.

[0019] It is worth noting that the optical strain system can also be used to measure the length, width, thickness and surface roughness of the support; It also includes: a clamping member and two movable plates 3 and a moving plate 4 connected and fixed to the displacement detection mechanism 2, the movable plate 3 is movably penetrated by a rotating plate 5 that is distributed obliquely, the two rotating plates 5 are rotatably connected to both ends of the moving plate 4, and a movable member is provided on the base plate 1, and the movable moving plate 4 enables the multiple displacement detection mechanisms 2 to move synchronously and press against the outer surface of the bridge support through the movable member; A plurality of rotating ring plates 6, the ends of the rotating ring plates 6 are rotatably connected with a pressing plate 7, and a clamping member is used between two rotating ring plates 6 to make the rotating ring plates 6 rotate and press against the corners of the bridge support pedestal stone, and the pressing plate 7 forms a pressing force between the base plate 1 and the side of the bridge support pedestal stone; A fixed cylinder 8 connected and fixed to the base plate 1 is slidably matched on the rotating ring plate 6, a sleeve rod 9 is movably sleeved in the fixed cylinder 8, and a limiting slide plate 10 sliding with the movable plate 3 is fixedly connected to the top of the sleeve rod 9, and a control part for rotating the limiting slide plate 10 is provided on the base plate 1.

[0020] An operating method of a real-time detection device for bridge bearing displacement for bridge installation, according to the above-mentioned real-time detection device for bridge bearing displacement for bridge installation, the specific operating method includes the following steps: S1, rotating the threaded rod 15, so that the two sliders 16 approach each other, thereby rotating the two rotating ring plates 6, so that the ends of the two rotating ring plates 6 move away from each other, so that the gap between the two rotating ring plates 6 is opened; S2, sliding the movable plate 3 along the rotating plate 5 toward the fixed plate 13, so that the multiple displacement detection mechanisms 2 are away from each other; S3, insert the entire device through the gap, so that the position of the rotating ring plate 6 corresponds to the position of the bridge support shim, and the position of the displacement detection mechanism 2 corresponds to the bridge support; S4, reversely rotate the threaded rod 15 to clamp and fix the rotating ring plate 6 with the side of the bridge support pedestal stone, one pressing plate 7 presses the side of the bridge support pedestal stone, and the other pressing plate 7 presses the baffle 11; S5, rotating the adjusting gear 20, so that the limit slide plate 10 drives the movable plate 3 to tilt, thereby tilting the displacement detection mechanism 2, adjusting the tilt angle of the displacement detection mechanism 2, so that the subsequent displacement detection mechanism 2 presses against the bridge bearing at an inclined angle; S6. Start the cylinder 12 to move the displacement detection mechanism 2 to the outer surface of the bridge support, so that the displacement detection mechanism 2 can perform real-time detection on the displacement of the bridge support.

[0021] The movable part includes a baffle 11 connected and fixed to the base plate 1, a cylinder 12 is fixedly connected to the baffle 11, an output shaft of the cylinder 12 is connected and fixed to the movable plate 4, the base plate 1 is a U-shaped structure, and fixed plates 13 are fixedly connected to both ends of the base plate 1, and a movable groove 14 is opened on the fixed plate 13 to slide with the rotating plate 5;

[0022] When the rotating ring plate 6 and the pressure plate 7 are connected and fixed with the bridge bearing pedestal, the movable plate 4 is moved by the cylinder 12, and under the limiting action of the movable groove 14, the rotating plate 5 is driven to move, so that the movable plate 3 slides along the limiting slide plate 10, so that the movable plate 3 and the movable plate 4 approach each other and move close to the bridge bearing, thereby driving multiple displacement detection mechanisms 2 to move close to the bridge bearing, so that the displacement detection mechanism 2 can stably contact the outer surface of the bridge bearing, which is convenient for the displacement detection mechanism 2 to perform real-time detection of the displacement of the bridge bearing.

[0023] The clamping member includes two threaded rods 15 connected and fixed to each other, the thread directions of the two threaded rods 15 are arranged in opposite directions, the two threaded rods 15 are threadedly connected with sliders 16, the top of the slider 16 is rotatably connected to the end of the rotating ring plate 6, and the bottom of the slider 16 is rotatably connected to the pressure plate 7 through a torsion spring; By rotating the threaded rod 15, the slider 16 moves along the threaded rod 15, and the two sliders 16 move away from or towards each other, and the sliders 16 will not tilt at an angle. This is because the two limit ring plates 23 fixed on the outer surface of the fixed cylinder 8 limit the rotating ring plate 6, thereby ensuring the stable movement of the rotating ring plate 6, and no vertical angle change occurs, that is, the rotating ring plate 6 moves horizontally relative to the base plate 1; The two sliders 16 move, and the rotating ring plate 6 rotates through the restriction of the fixed cylinder 8, and the rotating ring plate 6 presses against the corners of the bridge support pedestal (the clamping groove 18 on the rotating ring plate 6 is tightly clamped with the corners of the bridge support pedestal), and at the same time, the pressing plate 7 is pressed against the side of the bridge support pedestal through the torsion spring, so that the whole device is stably connected with the bridge support pedestal, wherein the fixed cylinder 8 and the arc groove 17 slide relative to each other adaptively; Among them, the position of the threaded rod 15 is not fixed, and is not connected and fixed to the base plate 1, which is convenient for the rotation of the rotating ring plate 6. Through the sliding cooperation of the arc plate, the position of the rotating ring plate 6 and the pressure plate 7 is adaptively adjusted, which makes it convenient for the entire device to be tightly clamped and fixed with the bridge support pedestal stone.

[0024] An arc groove 17 that slides with the fixed tube 8 is provided in the middle of the rotating ring plate 6, and a clamping groove 18 that is clamped with the corner of the bridge support pedestal stone is provided on the side of the rotating ring plate 6. The rotating ring plate 6 rotates close to the corner of the bridge support pedestal stone, so that the clamping groove 18 is clamped and fixed with the corner of the bridge support pedestal stone, and a rubber layer is provided on the clamping groove 18, so that the clamping groove 18 is tightly clamped and fixed with the corner of the bridge support pedestal stone.

[0025] The clamping member further includes a connecting plate 19 rotatably connected to the base plate 1, and two ends of the connecting plate 19 are rotatably connected to the ends of the two pressing plates 7, respectively, and the end of the other pressing plate 7 is pressed and matched with the baffle 11; When the threaded rod 15 rotates to drive the rotating ring plate 6 to rotate and press against the bridge support pedestal, the sliders 16 approach each other, causing the connecting plate 19 to rotate, thereby cooperating with the action of the torsion spring to further promote the rotation of the pressure plate 7, so that the pressure plate 7 is tightly pressed against the side of the bridge support pedestal, and cooperates with the slot 18 of the rotating ring plate 6 to stably connect and fix the base plate 1 to the bridge support pedestal.

[0026] It is worth noting that: one pressure plate 7 presses against the bridge support pedestal, and the other pressure plate 7 presses against the baffle plate 11. The two pressure plates 7 cooperate with each other to adaptively adjust the position of the limiting ring plate, and the horizontal plane position of the threaded rod 15 also changes adaptively. The arc groove 17 on the limiting ring plate and the fixed tube 8 slide adaptively, so that the pressure plate 7 and the rotating ring plate 6 are automatically adjusted and fixed more tightly to the bridge support pedestal.

[0027] The control component includes an adjusting gear 20 rotatably connected to the base plate 1. The adjusting gear 20 is fixedly connected to a sleeve rod 9 inserted into the base plate 1. By rotating the adjusting gear 20, the sleeve rod 9 rotates, thereby rotating the limiting slide plate 10 and keeping the fixed cylinder 8 stationary.

[0028] A toggle gear 21 passing through the base plate 1 is rotatably connected to the base plate 1, and the pitch circle radius of the toggle gear 21 is smaller than the pitch circle radius of the adjusting gear 20. An elastic plate 22 is rotatably connected inside the base plate 1. By rotating the toggle gear 21, the toggle gear 21 rotates, driving the adjusting gear 20 to rotate, thereby causing the sleeve rod 9 located in the fixed cylinder 8 to rotate, thereby causing the limiting slide plate 10 on the top of the sleeve rod 9 to rotate, wherein the limiting slide plate 10 is a U-shaped structure, thereby causing the movable plate 3 to tilt synchronously, thereby adjusting the angle of the displacement detection mechanism 2, so that the subsequent displacement detection mechanism 2 moves at this angle and presses against the outer surface of the bridge bearing without affecting the sliding fit between the movable plate 3 and the limiting slide plate 10.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A real-time detection device for bridge bearing displacement for bridge installation, characterized in that: include: A base plate (1), wherein a plurality of displacement detection mechanisms (2) are movably engaged with the base plate (1), and an optical strain system for measuring deformation of a bridge support is provided on the displacement detection mechanism (2); It also comprises: a clamping member and two movable plates (3) and a movable plate (4) connected and fixed to the displacement detection mechanism (2); a rotating plate (5) movably penetrates the movable plate (3) and is distributed in an inclined manner; the two rotating plates (5) are rotatably connected to both ends of the movable plate (4); a movable member is provided on the base plate (1); and the movable movable plate (4) causes the plurality of displacement detection mechanisms (2) to move synchronously and press against the outer surface of the bridge support through the movable member; A plurality of rotating ring plates (6), the ends of the rotating ring plates (6) being rotatably connected to a pressure plate (7), the clamping member being used between two rotating ring plates (6) to enable the rotating ring plates (6) to rotate and press against the corners of the bridge support pedestal stone, and the pressure plate (7) to form a pressure between the base plate (1) and the side of the bridge support pedestal stone; The rotating ring plate (6) is slidably matched with a fixed cylinder (8) which is connected and fixed to the base plate (1); a sleeve rod (9) is movably sleeved in the fixed cylinder (8); a limit slide plate (10) which slides with the movable plate (3) is fixedly connected to the top of the sleeve rod (9); and a control member for rotating the limit slide plate (10) is provided on the base plate (1).

2. A real-time detection device for displacement of a bridge support for bridge installation according to claim 1, characterized in that: The movable part comprises a baffle (11) connected and fixed to the base plate (1), a cylinder (12) being fixedly connected to the baffle (11), an output shaft of the cylinder (12) being connected and fixed to the movable plate (4), the base plate (1) being in a U-shaped structure, fixed plates (13) being fixedly connected at both ends of the base plate (1), and a movable groove (14) being provided on the fixed plate (13) for slidingly cooperating with the rotating plate (5).

3. A real-time detection device for bridge bearing displacement for bridge installation according to claim 2, characterized in that: The clamping member comprises two threaded rods (15) connected and fixed to each other, the thread directions of the two threaded rods (15) being arranged in opposite directions, and sliders (16) being threadedly connected to the two threaded rods (15), the top of the slider (16) being rotatably connected to the end of the rotating ring plate (6), and the bottom of the slider (16) being rotatably connected to the pressure plate (7) via a torsion spring.

4. A real-time detection device for bridge bearing displacement for bridge installation according to claim 3, characterized in that: The middle of the rotating ring plate (6) is provided with an arc groove (17) for slidingly cooperating with the fixed cylinder (8), and the side of the rotating ring plate (6) is provided with a clamping groove (18) for clamping with the corner of the bridge support pad stone.

5. A real-time detection device for displacement of a bridge support for bridge installation according to claim 4, characterized in that: The clamping member further comprises a connecting plate (19) rotatably connected to the base plate (1), two ends of the connecting plate (19) being rotatably connected to the ends of the two pressing plates (7) respectively, and the end of the other pressing plate (7) being pressed and matched with the baffle plate (11).

6. A real-time detection device for displacement of a bridge support for bridge installation according to claim 5, characterized in that: The control component comprises an adjusting gear (20) rotatably connected to the base plate (1); the adjusting gear (20) is fixedly connected to a sleeve rod (9) inserted into the base plate (1).

7. A real-time detection device for bridge bearing displacement for bridge installation according to claim 6, characterized in that: The base plate (1) is rotatably connected to a toggle gear (21) that passes through the base plate (1); the pitch circle radius of the toggle gear (21) is smaller than the pitch circle radius of the adjustment gear (20); and an elastic plate (22) is rotatably connected inside the base plate (1).

8. An operating method of a real-time detection device for bridge bearing displacement for bridge installation, characterized in that: According to a real-time detection device for bridge bearing displacement for bridge installation according to any one of claims 1 to 7, the specific operation method comprises the following steps: S1, rotating the threaded rod (15) so that the two sliders (16) approach each other, thereby rotating the two rotating ring plates (6) so that the ends of the two rotating ring plates (6) move away from each other, thereby opening the gap between the two rotating ring plates (6); S2, sliding the movable plate (3) along the rotating plate (5) in the direction of the fixed plate (13), so that the plurality of displacement detection mechanisms (2) are moved away from each other; S3, inserting the entire device through the gap so that the position of the rotating ring plate (6) corresponds to the position of the bridge support pedestal stone, and the position of the displacement detection mechanism (2) corresponds to the bridge support; S4, rotating the threaded rod (15) in the opposite direction, so that the rotating ring plate (6) is clamped and fixed to the side of the bridge support pedestal stone, one of the pressing plates (7) presses against the side of the bridge support pedestal stone, and the other pressing plate (7) presses against the baffle plate (11); S5, rotating the adjusting gear (20) so that the limiting slide plate (10) drives the movable plate (3) to tilt, thereby tilting the displacement detection mechanism (2), and adjusting the tilt angle of the displacement detection mechanism (2) so that the displacement detection mechanism (2) can subsequently press against the bridge support at the tilted angle; S6. Start the cylinder (12) to move the displacement detection mechanism (2) onto the outer surface of the bridge support.

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