Bridge deformation monitoring equipment for safe construction

Abstract

The application relates to a bridge deformation monitoring device for safe construction, and belongs to the technical field of bridge construction. The bridge deformation monitoring device for safe construction comprises a rotating plate, a connecting block rotatably connected to the rear end of the rotating plate, a mounting frame rotatably connected to the rear end of the connecting block, a height monitoring device arranged at the rear end of the mounting frame, an expansion monitoring device arranged at the front end of the rotating plate, positioning devices arranged at the front end of the expansion monitoring device, the positioning devices being used for locking the device after being attached to the sidewall of a pier, and supporting devices arranged at the bottom of the expansion monitoring device. The expansion monitoring device and the positioning devices are arranged to realize the monitoring of the expansion of the pier. The height monitoring device is arranged to realize the monitoring of the settlement of the bridge surface or the pier by monitoring the pressure of the first pressure sensor. The supporting devices are arranged to realize the monitoring of the settlement of the pier.

Description

Technical Field

[0001] This invention belongs to the field of bridge construction technology, specifically relating to a bridge deformation monitoring device for safe construction. Background Technology

[0002] In modern construction engineering, deformation monitoring of bridges has become an important part of the construction process. There are generally three methods for monitoring deformation during bridge construction: first, geodetic control surveying, also known as conventional ground surveying, which is the main means of deformation observation; second, special surveying methods, including tilt measurement and laser collimation measurement; and third, ground stereophotogrammetry.

[0003] Traditional bridge deformation monitoring methods mainly rely on manual measurement or simple sensors. These methods have drawbacks such as low measurement accuracy, poor real-time performance, and high labor intensity. Therefore, those skilled in the art provide a bridge deformation monitoring device for safe construction to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this invention is to provide a bridge deformation monitoring device for safe construction that is simple in structure and reasonably designed in order to solve the above problems.

[0005] The present invention achieves the above objectives through the following technical solutions: A bridge deformation monitoring device for safe construction includes a rotating plate, a connecting block rotatably connected to the rear end of the rotating plate, an installation frame rotatably connected to the rear end of the connecting block, a height monitoring device at the rear end of the installation frame, an expansion monitoring device at the front end of the rotating plate, positioning devices on both sides of the front end of the expansion monitoring device, the positioning devices being used to lock the device after it fits against the side wall of the bridge pier, and support devices on both sides of the bottom end of the expansion monitoring device. The expansion monitoring device includes a sliding shell fixedly connected to the front end of the rotating plate. Adjusting tubes are slidably connected to both sides of the inner wall of the sliding shell. An adjustment mechanism that cooperates with the two adjusting tubes is provided in the middle of the inner wall of the sliding shell. After the positioning device fixes the pier, the adjustment mechanism generates a relative displacement when the pier expands.

[0006] As a further optimization of the present invention, the height monitoring device includes a monitoring shell, a connecting pipe fixedly connected to the side wall of the monitoring shell, a first pressure sensor fixedly connected to one end of the connecting pipe, a first sliding plate that cooperates with the first pressure sensor being slidably sealed on the inner wall of the connecting pipe, and a monitoring mechanism being provided on the inner wall of the monitoring shell.

[0007] As a further optimization of the present invention, the monitoring mechanism includes first adjusting blocks that are slidably connected to both ends of the inner wall of the monitoring shell, and first screws threaded through the middle portions of the two first adjusting blocks respectively. One end of each of the two first screws is rotatably connected to a second sliding plate that is sealed and slidable with the inner wall of the monitoring shell. A first spring is fixedly connected between the two second sliding plates. The other end of one of the first screws is rotatably connected to a mounting plate, and the other end of the other first screw is rotatably connected to a mounting bracket.

[0008] As a further optimization of the present invention, the adjustment mechanism includes a mounting block fixedly connected to the middle of the inner wall of the sliding shell, a bidirectional lead screw rotatably passing through the middle of the mounting block, a driven gear fixedly sleeved in the middle of the bidirectional lead screw, a servo motor fixedly connected to the middle of the inner wall of the sliding shell, a transmission gear meshing with the driven gear fixedly sleeved at the output end of the servo motor, and an adaptive module provided on the inner wall of the adjustment tube.

[0009] As a further optimization of the present invention, the adaptive module includes a second adjusting block threaded onto one end of a bidirectional lead screw, the second adjusting block being slidably connected to the inner wall of an adjusting tube, a second spring fixedly connected to one side of the second adjusting block and fixedly connected to the inner wall of the adjusting tube, and a ratchet rack cooperating with a positioning device fixedly connected to the front end of the adjusting tube.

[0010] As a further optimization of the present invention, the positioning device includes a movable plate slidably connected to the front end of the adjusting tube, a pressure block slidably passing through one side of the movable plate, a pressure plate fixedly connected to one end of the pressure block, a laser rangefinder fixedly connected to the bottom end of the movable plate, and a locking mechanism provided on the inner wall of the pressure plate.

[0011] As a further optimization of the present invention, the locking mechanism includes two limiting rods fixedly connected to the inner wall of the moving plate. The side walls of the two limiting rods are slidably fitted with pawls that slide through the rear end of the inner wall of the moving plate, and the pawls cooperate with the ratchet rack. The side walls of the two limiting rods are respectively fitted with a third spring fixedly connected to the front end of the pawl, and a limiting module is provided in the middle of the front end of the pawl.

[0012] As a further optimization of the present invention, the limiting module includes a pressure rod fixedly connected to the front end of the pawl, and two inclined grooves are formed at the top end of the pressure rod. The inner walls of the two inclined grooves are slidably connected to a slide rod fixedly connected to the pressure block.

[0013] As a further optimization of the present invention, the support device includes a rotating sleeve rotatably connected to one side of the bottom end of the sliding shell, a second screw is threadedly connected to the inner wall of the rotating sleeve, the bottom end of the second screw is rotatably connected to the sleeve, and an auxiliary monitoring mechanism is provided on the inner wall of the sleeve.

[0014] As a further optimization of the present invention, the auxiliary monitoring mechanism includes a second pressure sensor fixedly connected to the top of the inner wall of the sleeve, a top block fixedly connected to the output end of the second pressure sensor, and a plurality of balls rotatably connected to the bottom end of the top block.

[0015] The beneficial effects of this invention are as follows: 1. In this invention, by setting up an expansion monitoring device and a positioning device, a servo motor drives the transmission gear to rotate. The meshing of the transmission gear and the driven gear drives the bidirectional lead screw to rotate, causing the second adjusting block to move along the side wall of the bidirectional lead screw. As the second adjusting block moves, it compresses the second spring and ensures that the distance between the two adjusting tubes is greater than the diameter of the pier. At the same time, the moving plate at the front end of the sliding adjusting tube slides towards the middle of the sliding shell, so that the pressure plate contacts the side wall of the pier. After the pressure plate contacts the side wall of the pier, it exerts pressure on the pressure block, causing the pressure block to drive the sliding rod to slide in the inclined groove. The pressure rod further applies pressure to the pawl, locking the pawl and the ratchet rack to prevent loosening during monitoring. When the pier expands, it can exert pressure on the pressure plate, thereby driving the two adjusting tubes to move outwards respectively. At this time, the distance between the two laser rangefinders changes, realizing the monitoring of the pier expansion.

[0016] 2. In this invention, by setting up a height monitoring device, and based on the installation position of the expansion monitoring device, when it is necessary to detect bridge deck settlement, the monitoring shell can be rotated to adjust the distance between the two first screws, and the mounting plate can be installed at the bottom of the bridge deck. Similarly, when it is necessary to detect bridge pier settlement, the above operation can be repeated to install the mounting plate on the ground. When the bridge deck or bridge pier settles, the first screw will generate pressure on the hydraulic oil in the monitoring shell through the second sliding plate, thereby transmitting the pressure generated by the hydraulic oil to the first sliding plate, and using the first pressure sensor to monitor the pressure, thus realizing the detection of bridge deck or bridge pier settlement.

[0017] 3. In this invention, by setting up a support device, when the bridge deck is being inspected, rotating the second screw to place the top block on the ground supports the expansion monitoring device. When the bridge deck settles, the position of the expansion monitoring device does not change, so the pressure of the second pressure sensor in the sleeve does not change. When monitoring the bridge pier, the second screw can be rotated to bring the sleeve into contact with the bridge deck, and the pressure change of the second pressure sensor in the sleeve can be monitored in real time. When the bridge pier settles, the value of the second pressure sensor will decrease as the expansion monitoring device descends, thus realizing the monitoring of the bridge pier settlement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the overall structure of another usage state of the present invention; Figure 3 This is a schematic diagram of the overall structure of the height monitoring device of the present invention; Figure 4 This is a schematic diagram of the overall structure of the height monitoring device of the present invention from another perspective; Figure 5 This is a schematic diagram of the overall structure of the expansion monitoring device, positioning device, and support device of the present invention. Figure 6 This is a schematic diagram of the overall structure of the expansion monitoring device and positioning device of the present invention; Figure 7 This is a cross-sectional structural schematic diagram of the expansion monitoring device of the present invention; Figure 8 This is a schematic diagram of the internal structure of the expansion monitoring device of the present invention; Figure 9 This is a schematic diagram of the overall structure of the positioning device of the present invention; Figure 10 This is an exploded structural diagram of the positioning device of the present invention; Figure 11 This is a schematic diagram of the overall structure of the support device of the present invention; Figure 12 This is an exploded structural diagram of the support device of the present invention; Figure 13 This is a schematic diagram of the internal overall structure of the height monitoring device of the present invention; Figure 14 This is a schematic diagram of the internal structure of the moving plate of the positioning device of the present invention.

[0019] In the diagram: 1. Height monitoring device; 101. Monitoring housing; 102. First pressure sensor; 103. Connecting pipe; 104. First screw; 105. First sliding plate; 106. First spring; 107. Second sliding plate; 108. First adjusting block; 2. Expansion monitoring device; 201. Sliding housing; 202. Adjusting pipe; 203. Servo motor; 204. Transmission gear; 205. Bidirectional lead screw; 206. Driven gear; 207. Ratchet; 208. Second adjusting block; 209. Second spring; 210. Mounting block; 3. Positioning device; 301. Moving plate; 302. Pressure plate; 303. Pawl; 304. Laser rangefinder; 305. Pressure block; 306. Limiting rod; 307. Third spring; 308. Sliding rod; 309. Pressure rod; 310. Inclined groove; 4. Support device; 401. Rotating sleeve; 402. Top block; 403. Sleeve; 404. Second screw; 405. Ball bearing; 406. Second pressure sensor; 5. Mounting plate; 6. Connecting block; 7. Mounting bracket; 8. Rotating plate. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example: Figure 1 , Figure 2 As shown, a bridge deformation monitoring device for safe construction includes a rotating plate 8, a connecting block 6 rotatably connected to the rear end of the rotating plate 8, and a mounting frame 7 rotatably connected to the rear end of the connecting block 6. The connecting block 6 and the mounting frame 7 are provided on the rotating plate 8, so that the angles of the height monitoring device 1 and the expansion monitoring device 2 can be adjusted arbitrarily before installation, so that the device can be adapted to bridge piers of different specifications and shapes. The height monitoring device 1 is provided at the rear end of the mounting frame 7, and the expansion monitoring device 2 is provided at the front end of the rotating plate 8. Positioning devices 3 are provided on both sides of the front end of the expansion monitoring device 2. The positioning devices 3 are used to lock the device after it fits against the side wall of the bridge pier. Supporting devices 4 are provided on both sides of the bottom end of the expansion monitoring device 2.

[0022] like Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in order to drive the positioning device 3 to move relative to the bridge pier when the bridge pier itself expands, an expansion monitoring device 2 is set up to detect the expansion of the bridge pier. The expansion monitoring device 2 includes a sliding shell 201 fixedly connected to the front end of the rotating plate 8. Adjustment tubes 202 are slidably connected to both sides of the inner wall of the sliding shell 201. After the positioning device 3 fixes the bridge pier, the adjustment mechanism generates relative displacement when the bridge pier expands.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 13As shown, a height monitoring device 1 is installed to detect the bridge deck height and pier height according to the installation status. The height monitoring device 1 includes a monitoring shell 101. A connecting pipe 103 is fixedly connected to the side wall of the monitoring shell 101. A first pressure sensor 102 is fixedly connected to one end of the connecting pipe 103. A first sliding plate 105 that cooperates with the first pressure sensor 102 is slidably sealed on the inner wall of the connecting pipe 103. First adjusting blocks 108 are slidably connected to both ends of the inner wall of the monitoring shell 101. First screws 104 are threaded through the middle parts of the two first adjusting blocks 108 respectively. One end of each of the two first screws 104 rotates... A second sliding plate 107 is dynamically connected and slides in a sealed manner with the inner wall of the monitoring shell 101. Hydraulic oil is injected into the sealed space formed between the two second sliding plates 107, the first sliding plate 105 and the monitoring shell 101 to transmit the pressure generated during monitoring to the first pressure sensor 102 for monitoring. When the bridge deck or pier settles, the first screw 104 will generate pressure on the hydraulic oil in the monitoring shell 101 through the second sliding plates 107, thereby transmitting the pressure generated by the hydraulic oil to the first sliding plate 105, and using the first pressure sensor 102 to monitor the pressure, so as to realize the detection of bridge deck or pier settlement.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 13 As shown, a first spring 106 is fixedly connected between the two second sliding plates 107. By providing the first spring 106 in the monitoring shell 101, the two second sliding plates 107 can be in a balanced state in the monitoring shell 101 when the mounting plate 5 is installed, which effectively improves the stability of the detection. The other end of one of the first screws 104 is rotatably connected to the mounting plate 5, and the other end of the first screw 104 is rotatably connected to the mounting frame 7. Depending on the installation position of the expansion monitoring device 2, when it is necessary to detect the settlement of the bridge deck, the monitoring shell 101 can be rotated to adjust the distance between the two first screws 104 and install the mounting plate 5 at the bottom of the bridge deck. Similarly, when it is necessary to detect the settlement of the bridge pier, the above operation can be repeated to install the mounting plate 5 on the ground.

[0025] like Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, a mounting block 210 is fixedly connected to the middle of the inner wall of the sliding shell 201. A bidirectional lead screw 205 rotatably passes through the middle of the mounting block 210. A driven gear 206 is fixedly sleeved in the middle of the bidirectional lead screw 205. A servo motor 203 is fixedly connected to the middle of the inner wall of the sliding shell 201. A transmission gear 204 that meshes with the driven gear 206 is fixedly sleeved at the output end of the servo motor 203. The servo motor 203 drives the transmission gear 204 to rotate. The meshing of the transmission gear 204 and the driven gear 206 drives the bidirectional lead screw 205 to rotate, so that the second adjusting block 208 moves along the side wall of the bidirectional lead screw 205.

[0026] like Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, a second adjusting block 208 is threaded onto one end of the bidirectional lead screw 205. The second adjusting block 208 is slidably connected to the inner wall of the adjusting tube 202. A second spring 209 is fixedly connected to one side of the second adjusting block 208 and is also fixedly connected to the inner wall of the adjusting tube 202. The elastic force generated by the first spring 106 and the second spring 209 is much smaller than the pressure generated during bridge settlement monitoring and will not affect the monitoring results. A ratchet rack 207 that cooperates with the positioning device 3 is fixedly connected to the front end of the adjusting tube 202. As the second adjusting block 208 moves, the second adjusting block 208 will compress the second spring 209 and ensure that the distance between the two adjusting tubes 202 is greater than the diameter of the pier.

[0027] like Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 9 , Figure 10 and Figure 14 As shown, in order to prevent damage to the device due to rigid connection when the bridge pier expands, a positioning device 3 is provided. The positioning device 3 includes a movable plate 301 that is slidably connected to the front end of the adjusting pipe 202. A pressure block 305 is slidably passed through one side of the movable plate 301. A pressure plate 302 is fixedly connected to one end of the pressure block 305. A laser rangefinder 304 is fixedly connected to the bottom end of the movable plate 301. The movable plate 301 at the front end of the adjusting pipe 202 is slid towards the middle of the sliding shell 201, so that the pressure plate 302 contacts the side wall of the bridge pier. After the pressure plate 302 contacts the side wall of the bridge pier, the pressure plate 302 will exert pressure on the pressure block 305, thereby causing the pressure block 305 to drive the slide rod 308 to slide in the inclined groove 310.

[0028] like Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 9 , Figure 10 and Figure 14 As shown, two limiting rods 306 are fixedly connected to the inner wall of the movable plate 301. Pads 303, which slide through the rear end of the inner wall of the movable plate 301, are slidably sleeved on the side walls of the two limiting rods 306. The pawls 303 cooperate with a ratchet rack 207. In their natural state, due to the elastic force of the third spring 307, the pawls 303 and ratchet rack 207 are always engaged. Simultaneously, the third spring 307 generates elastic force on the pawls 303, further ensuring the ratchet rack 207 and pawls 303 are in contact, preventing loosening. This allows the movable plate 301 to move unidirectionally. During reverse movement, the locked state of the ratchet rack 207 and pawls 303 will drive the adjusting tube 202 to move, enabling expansion monitoring. The side walls of the two limiting rods 306 are respectively sleeved with pawls fixedly connected to the front ends of the pawls 303. The third spring 307 has a pressure rod 309 fixedly connected to the front end of the pawl 303. The top of the pressure rod 309 has two inclined grooves 310. The inclined grooves 310 on the pressure rod 309 are inclined and can slide along the inclined grooves 310 when the pressure block 305 moves inward, further applying pressure to the pawl 303, thereby effectively improving the stability of the pawl 303. The inner walls of the two inclined grooves 310 are slidably connected to the sliding rods 308 which are fixedly connected to the pressure block 305. The pressure rods 309 further apply pressure to the pawl 303, so that the pawl 303 and the ratchet rack 207 are locked together, preventing loosening during the monitoring process. When the pier expands, it can generate pressure on the pressure plate 302, thereby driving the two adjusting tubes 202 to move outward respectively. At this time, the distance between the two laser rangefinders 304 changes, realizing the monitoring of the pier expansion.

[0029] like Figure 1 , Figure 2 , Figure 11 and Figure 12As shown, in order to eliminate the impact of pier settlement on the monitoring device when detecting the bridge deck height, a support device 4 is set up. The support device 4 includes a rotating sleeve 401 rotatably connected to one side of the bottom of the sliding shell 201. A second screw 404 is threadedly connected to the inner wall of the rotating sleeve 401. A sleeve 403 is rotatably connected to the bottom of the second screw 404. When detecting the bridge deck, rotating the second screw 404 to place the top block 402 on the ground is used to support the expansion monitoring device 2. When the bridge deck settles, the position of the expansion monitoring device 2 does not change, so the pressure of the second pressure sensor 406 in the sleeve 403 does not change. When monitoring the pier, the second screw 404 can be rotated to bring the sleeve 403 into contact with the bridge deck, and the pressure change of the second pressure sensor 406 in the sleeve 403 can be monitored in real time. When the pier settles, the value of the second pressure sensor 406 will decrease as the expansion monitoring device 2 descends, thus realizing the monitoring of pier settlement.

[0030] like Figure 1 , Figure 2 , Figure 11 and Figure 12 As shown, a second pressure sensor 406 is fixedly connected to the top of the inner wall of the sleeve 403. A top block 402 is fixedly connected to the output end of the second pressure sensor 406. Several balls 405 are rotatably connected to the bottom end of the top block 402. The balls 405 are provided at the bottom end of the top block 402. By rotating the balls 405 in the top block 402, the second screw 404 can be used to adjust the top block 402 to fit against the surface of the object, thus preventing damage to the device.

[0031] It should be noted that this bridge deformation monitoring device for safe construction utilizes a servo motor 203 to drive a transmission gear 204 to rotate. The meshing of the transmission gear 204 and the driven gear 206 drives a bidirectional lead screw 205 to rotate, causing the second adjusting block 208 to move along the side wall of the bidirectional lead screw 205. As the second adjusting block 208 moves, it compresses the second spring 209, ensuring that the distance between the two adjusting tubes 202 is greater than the diameter of the pier. Simultaneously, the sliding plate 301 at the front end of the adjusting tube 202 slides towards the middle of the sliding shell 201, thus... The pressure plate 302 contacts the side wall of the pier. Upon contact, the pressure plate 302 exerts pressure on the pressure block 305, causing the pressure block 305 to slide the sliding rod 308 in the inclined groove 310. This, in turn, uses the pressure rod 309 to further apply pressure to the pawl 303, locking it against the ratchet rack 207 to prevent loosening during monitoring. When the pier expands, pressure is applied to the pressure plate 302, causing the two adjusting tubes 202 to move outwards. This changes the distance between the two laser rangefinders 304, thus enabling the monitoring of the pier's expansion. Based on the installation position of the expansion monitoring device 2, when it is necessary to detect bridge deck settlement, the monitoring housing 101 can be rotated to adjust the distance between the two first screws 104, and the mounting plate 5 can be installed at the bottom of the bridge deck. Similarly, when it is necessary to detect pier settlement, the above operation can be repeated to install the mounting plate 5 on the ground. When the bridge deck or pier settles, the first screws 104 will generate pressure on the hydraulic oil in the monitoring housing 101 through the second sliding plate 107, thereby transmitting the pressure generated by the hydraulic oil to the first sliding plate 105, and using the first pressure sensor 102 to monitor the pressure, thus realizing the detection of bridge deck or pier settlement. When inspecting the bridge deck, rotating the second screw 404 to place the top block 402 on the ground supports the expansion monitoring device 2. When the bridge deck settles, the position of the expansion monitoring device 2 does not change, so the pressure of the second pressure sensor 406 in the sleeve 403 does not change. When monitoring the bridge pier, the second screw 404 can be rotated to bring the sleeve 403 into contact with the bridge deck, and the pressure change of the second pressure sensor 406 in the sleeve 403 can be monitored in real time. When the bridge pier settles, the value of the second pressure sensor 406 will decrease as the expansion monitoring device 2 descends, thus realizing the monitoring of the bridge pier settlement.

[0032] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A bridge deformation monitoring device for safe construction, comprising a rotating plate (8), characterized in that: The rear end of the rotating plate (8) is rotatably connected to a connecting block (6), the rear end of the connecting block (6) is rotatably connected to a mounting frame (7), the rear end of the mounting frame (7) is provided with a height monitoring device (1), the front end of the rotating plate (8) is provided with an expansion monitoring device (2), the front ends of the expansion monitoring device (2) are respectively provided with positioning devices (3), the positioning devices (3) are used to lock the device after fitting against the side wall of the pier, and the bottom ends of the expansion monitoring device (2) are respectively provided with support devices (4). The expansion monitoring device (2) includes a sliding shell (201) fixedly connected to the front end of the rotating plate (8). Adjustment tubes (202) are slidably connected to both sides of the inner wall of the sliding shell (201). An adjustment mechanism that cooperates with the two adjustment tubes (202) is provided in the middle of the inner wall of the sliding shell (201). After the positioning device (3) fixes the pier, the adjustment mechanism generates a relative displacement when the pier expands.

2. The bridge deformation monitoring device for safe construction according to claim 1, characterized in that: The height monitoring device (1) includes a monitoring shell (101), a connecting pipe (103) is fixedly connected to the side wall of the monitoring shell (101), a first pressure sensor (102) is fixedly connected to one end of the connecting pipe (103), a first sliding plate (105) that cooperates with the first pressure sensor (102) is sealed and slidably on the inner wall of the connecting pipe (103), and a monitoring mechanism is provided on the inner wall of the monitoring shell (101).

3. The bridge deformation monitoring device for safe construction according to claim 2, characterized in that: The monitoring mechanism includes a first adjusting block (108) that is slidably connected to both ends of the inner wall of the monitoring shell (101). A first screw (104) is threaded through the middle of each of the two first adjusting blocks (108). A second sliding plate (107) that is sealed and slids with the inner wall of the monitoring shell (101) is rotatably connected to one end of each of the two first screws (104). A first spring (106) is fixedly connected between the two second sliding plates (107). A mounting plate (5) is rotatably connected to the other end of one of the first screws (104), and the other end of the other first screw (104) is rotatably connected to the mounting bracket (7).

4. The bridge deformation monitoring device for safe construction according to claim 1, characterized in that: The adjustment mechanism includes a mounting block (210) fixedly connected to the middle of the inner wall of the sliding shell (201). A bidirectional lead screw (205) is rotatably passed through the middle of the mounting block (210). A driven gear (206) is fixedly sleeved in the middle of the bidirectional lead screw (205). A servo motor (203) is fixedly connected to the middle of the inner wall of the sliding shell (201). A transmission gear (204) meshing with the driven gear (206) is fixedly sleeved at the output end of the servo motor (203). An adaptive module is provided on the inner wall of the adjustment tube (202).

5. A bridge deformation monitoring device for safe construction according to claim 4, characterized in that: The adaptive module includes a second adjusting block (208) threaded onto one end of a bidirectional lead screw (205). The second adjusting block (208) is slidably connected to the inner wall of the adjusting tube (202). A second spring (209) is fixedly connected to one side of the second adjusting block (208) and fixedly connected to the inner wall of the adjusting tube (202). A ratchet rack (207) that cooperates with the positioning device (3) is fixedly connected to the front end of the adjusting tube (202).

6. A bridge deformation monitoring device for safe construction according to claim 5, characterized in that: The positioning device (3) includes a movable plate (301) slidably connected to the front end of the regulating tube (202). A pressure block (305) is slidably passed through one side of the movable plate (301). A pressure plate (302) is fixedly connected to one end of the pressure block (305). A laser rangefinder (304) is fixedly connected to the bottom end of the movable plate (301). A locking mechanism is provided on the inner wall of the pressure plate (302).

7. A bridge deformation monitoring device for safe construction according to claim 6, characterized in that: The locking mechanism includes two limiting rods (306) fixedly connected to the inner wall of the moving plate (301). The side walls of the two limiting rods (306) are slidably fitted with pawls (303) that slide through the rear end of the inner wall of the moving plate (301). The pawls (303) cooperate with the ratchet rack (207). The side walls of the two limiting rods (306) are respectively fitted with third springs (307) fixedly connected to the front end of the pawls (303). A limiting module is provided at the middle of the front end of the pawls (303).

8. A bridge deformation monitoring device for safe construction according to claim 7, characterized in that: The limiting module includes a pressure rod (309) fixedly connected to the front end of the pawl (303). The top end of the pressure rod (309) has two inclined grooves (310), and the inner walls of the two inclined grooves (310) are slidably connected to a slide rod (308) fixedly connected to the pressure block (305).

9. A bridge deformation monitoring device for safe construction according to any one of claims 1-8, characterized in that: The support device (4) includes a rotating sleeve (401) rotatably connected to one side of the bottom end of the sliding shell (201). A second screw (404) is threadedly connected to the inner wall of the rotating sleeve (401). A sleeve (403) is rotatably connected to the bottom end of the second screw (404). An auxiliary monitoring mechanism is provided on the inner wall of the sleeve (403).

10. A bridge deformation monitoring device for safe construction according to claim 9, characterized in that: The auxiliary monitoring mechanism includes a second pressure sensor (406) fixedly connected to the top of the inner wall of the sleeve (403). The output end of the second pressure sensor (406) is fixedly connected to a top block (402), and the bottom end of the top block (402) is rotatably connected to a number of balls (405).

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