Bridge displacement monitoring device and monitoring method thereof

Abstract

The invention discloses a bridge displacement monitoring device which comprises a base, a stand column is installed at the top of the base, an assembly box is installed at the top of the stand column, a horizontal adjusting mechanism is installed at the bottom of the inner side of the assembly box, a rotating device is installed at the top of the horizontal adjusting mechanism, and the rotating device is connected with a detection device. And the assembly box is provided with transparent tempered glass on the outer side of the detection device. According to the invention, the laser detector in the detection device is installed on the rotating device, the horizontal adjustment is carried out through the horizontal adjustment mechanism, and the plurality of targets are respectively installed on each measurement point of the bridge, so that the rotating device can drive the laser detector to automatically carry out rotary monitoring. The laser beam emitted by the laser detector can irradiate on the target, the photosensitive sensor on the target receives the reflected light signal, and the displacement of the bridge can be accurately calculated by analyzing the position change of the light spot on the target, so that the monitoring data is more comprehensive, a large amount of time required by manual testing can be saved, and the device is suitable for long-term monitoring of the bridge.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge displacement monitoring, and in particular relates to a bridge displacement monitoring device and a monitoring method thereof. Background Art

[0002] With the continuous expansion and improvement of modern transportation networks, bridges, as a key component of transportation infrastructure, are increasing in scale and complexity from small urban overpasses to large cross-sea and cross-river bridges. In the long-term service of bridges, they are subject to the combined effects of various complex factors such as vehicle loads, wind, temperature changes, and earthquakes, and the structural displacement will inevitably change. These displacement changes are key indicators reflecting the health of bridge structures. Even extremely subtle displacement anomalies may indicate potential structural safety hazards. Therefore, accurate and real-time monitoring of bridge displacement is crucial to ensuring the safe operation of bridges, extending their service life, and ensuring smooth traffic. However, at present, detection is mainly carried out by manual means and monitoring by displacement sensors. The manual detection method has the disadvantages of being troublesome, labor-intensive, expensive, long construction period, affecting traffic, and requiring professional personnel to conduct on-site measurements. The displacement sensor method monitors a single part, and the monitoring data is not comprehensive enough. Therefore, a bridge displacement monitoring device and a monitoring method are urgently needed to solve the above problems. Summary of the invention

[0003] In view of the problems raised by the above background technology, the purpose of the present invention is to provide a bridge displacement monitoring device and a monitoring method thereof.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0005] A bridge displacement monitoring device comprises a base, a column is installed on the top of the base, an assembly box is installed on the top of the column, a horizontal adjustment mechanism is installed on the inner bottom of the assembly box, a rotating device is installed on the top of the horizontal adjustment mechanism, the rotating device is connected to a detection device, and the assembly box is installed with transparent tempered glass on the outer side of the detection device;

[0006] The horizontal adjustment mechanism comprises a support column installed at the bottom center of the assembly box, a ball is installed on the top of the support column, a ball seat is movably installed on the top of the ball, a horizontal adjustment plate is installed on the top of the ball seat, the rotating device is installed on the horizontal adjustment plate, threaded seats are installed on the four sides of the bottom of the assembly box, a screw is installed in the threaded seat, an adjusting threaded column is installed on the top of the screw, the top of the adjusting threaded column is set in a spherical structure, and a hexagonal torsion block is installed at the bottom of the screw;

[0007] The detection device comprises a laser detector and a plurality of targets. The laser detector is installed at the power output end of the rotating device, and the plurality of targets are respectively installed on the bridge.

[0008] It is further defined that the inner sides of the assembly box are provided with reinforcement frames, the reinforcement frames are provided with sleeves, the inner sides of the sleeves are provided with limit plates slidably, the limit plates are connected with a slide bar, one side of the slide bar passes through the sleeve and extends to the outside thereof, the outer side of the slide bar is provided with a locking block, the inner side of the locking block is provided with a spring, the other side of the spring is provided on the sleeve, the locking block enables the outer side to be provided with a transmission plate, the outer side of the transmission plate is provided with a movable block, the outer side of the movable block is provided with an arc groove, a threaded limit block is provided in the arc groove, the outer side of the movable block is slidably connected with a support guide seat, the bottom of the support guide seat is provided in the assembly box, the inner sides of the transmission plates on both sides are provided with tooth plates, the tooth plates on both sides are meshed with rotating gears, the rotating gears are connected with a rotating rod, the lower side of the rotating rod is provided with a hand push handle, the bottom of the rotating rod is provided with a bearing, and the bearing is provided in the assembly box. Such a structural design plays a role in fixing the adjustment thread column.

[0009] It is further defined that the inner bottom of the assembly box is provided with grooves on the inner sides of the bearings on both sides, and movable limit blocks are hingedly installed in the grooves. Such a structural design has a limit effect on the hand push handle.

[0010] It is further defined that a through slot is provided at the middle position of the base, mounting planes are provided on both sides of the base, a protective seat is installed on the mounting plane, the protective seat is provided with a slide slot, a guide rod is installed in the slide slot, buffer seats are slidably connected to both sides of the guide rod, buffer seats on both sides are connected to buffer springs, the free ends of the buffer springs are installed on the side walls of the slide slot, the buffer seat is provided with a first hinge seat, the first hinge seat is connected to a buffer rod, the other side of the buffer rod is connected to a second hinge seat, and the second hinge seats on both sides are connected to arc-shaped buffer plates. Such a structural design enables the base to have an anti-collision effect and reduce the damage to the base caused by impact.

[0011] It is further defined that a screw is installed in the column, bearing seats are installed on the upper and lower sides of the screw, a servo motor is connected to the bottom of the screw, the servo motor is installed in the through slot of the base, the screw is connected to a rectangular nut moving seat, a push rod is fixedly installed on four sides of the rectangular nut moving seat, the top of the push rod passes through the column and is connected to a lock plate, and the lock plate is locked and installed at the bottom of the assembly box. Such a structural design enables the assembly box to adjust its height position.

[0012] It is further defined that a protective shell is provided on the outer side of the servo motor, and the protective shell is installed in the through slot. Such a structural design has a protective effect on the servo motor and prolongs the service life of the servo motor.

[0013] It is further defined that a mounting frame is installed on the top of the assembly box, a solar panel is installed on the mounting frame, an output end of the solar panel is connected to a battery, and the battery is installed in the assembly box. Such a structural design achieves the effect of solving energy problems.

[0014] It is further defined that the assembly box is provided with an assembly seat on both sides, a mesh plate is provided on the outer side of the assembly seat, a cooling fan is provided on the inner side of the assembly seat, and a dustproof net is provided between the mesh plate and the cooling fan. Such a structural design improves the use effect of dustproof and heat dissipation.

[0015] It is further defined that the output end of the storage battery is connected to the rotating device, the detection device, the servo motor and the cooling fan. Such a structural design is convenient for power supply.

[0016] A monitoring method for a bridge displacement monitoring device, characterized in that it comprises the following steps:

[0017] S1: Install the base 1 on the bridge to be monitored, install the laser detector in the detection device on the rotating device, and install multiple targets on various measuring points of the bridge respectively;

[0018] S2: Adjust the horizontal adjustment mechanism to ensure that the laser detector is in a horizontal working state, then start the servo motor, the servo motor drives the lead screw to rotate along the bearing seat, so that the rotating lead screw drives the rectangular nut moving seat to move up and down, the rectangular nut moving seat drives the push rod, the top of the push rod pushes the lock plate, the lock plate pushes the assembly box, and the assembly box drives the laser detector to adjust the height position;

[0019] S3: During use, the rotating device drives the laser detector to move so that the laser beam emitted by the laser detector can be projected onto the target. The photosensitive sensor on the target receives the reflected light signal. By analyzing the position change of the light spot on the target, the displacement of the bridge can be accurately calculated with an accuracy of millimeters or sub-millimeter levels. After the laser detector performs laser monitoring on multiple targets, the target can be detected again after a period of time. Thus, through multiple detections and analysis of the detected data, the displacement of the bridge after long-term use can be calculated.

[0020] The beneficial effects of the present invention are as follows: the present invention installs the laser detector in the detection device on the rotating device, performs horizontal adjustment through the horizontal adjustment mechanism, drives the lead screw through the motor, adjusts the height of the assembly box as a whole, and installs multiple targets on various measuring points of the bridge respectively, so that the rotating device can drive the laser detector to automatically perform rotation monitoring, so that the laser beam emitted by the laser detector can be projected on the target, and the photosensitive sensor on the target receives the reflected light signal. By analyzing the position change of the light spot on the target, the displacement of the bridge can be accurately calculated with an accuracy of millimeter or sub-millimeter level, making the monitoring data more comprehensive, saving a lot of time required for manual testing, and being suitable for long-term monitoring of bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0022] Figure 1 This is a schematic diagram of the axial structure of a bridge displacement monitoring device according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the transverse cross-sectional structure of an assembly box of a bridge displacement monitoring device according to an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of a vertical cross-sectional structure of an assembly box of a bridge displacement monitoring device according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of a sleeve cross-sectional structure of a bridge displacement monitoring device according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the axial structure of a movable block of a bridge displacement monitoring device according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the enlarged structure of point A of a bridge displacement monitoring device according to an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the installation structure of a hand push handle of a bridge displacement monitoring device according to an embodiment of the present invention;

[0029] The main component symbols are described as follows:

[0030] Base 1, column 2, assembly box 3, horizontal adjustment mechanism 4, rotating device 5, detection device 6, transparent tempered glass 7, support column 8, ball 9, ball seat 10, horizontal adjustment plate 11, threaded seat 12, screw 13, adjustment threaded column 14, hexagonal twist block 15, reinforcement frame 16, sleeve 17, limit plate 18, slide bar 19, lock block 20, spring 21, transmission plate 22, movable block 23, arc groove 24, thread limit block 25, support guide seat 26, tooth plate 27, rotating gear 28, rotating rod 29, hand push handle 3 0, bearing 31, groove 32, movable limit block 33, through groove 34, installation plane 35, protective seat 36, slide groove 37, guide rod 38, buffer seat 39, buffer spring 40, first hinge seat 41, buffer rod 42, second hinge seat 43, arc buffer plate 44, screw 45, bearing seat 46, servo motor 47, rectangular nut moving seat 48, push rod 49, lock disk 50, protective shell 51, mounting frame 52, solar panel 53, battery 54, assembly seat 55, mesh plate 56, cooling fan 57, dustproof net 58. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Embodiment 1, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a bridge displacement monitoring device is provided, wherein a column 2 is installed on the top of a base 1, an assembly box 3 is installed on the top of the column 2, a horizontal adjustment mechanism 4 is installed on the inner bottom of the assembly box 3, a rotating device 5 is installed on the top of the horizontal adjustment mechanism 4, the rotating device 5 is connected to a detection device 6, and a transparent tempered glass 7 is installed on the outer side of the detection device 6 of the assembly box 3;

[0033] The horizontal adjustment mechanism 4 includes a support column 8 installed at the bottom center of the assembly box 3, a ball 9 is installed on the top of the support column 8, a ball seat 10 is movably installed on the top of the ball 9, a horizontal adjustment plate 11 is installed on the top of the ball seat 10, and the rotating device 5 is installed on the horizontal adjustment plate 11. Threaded seats 12 are installed on the four sides of the bottom of the assembly box 3, and a screw 13 is installed in the threaded seat 12. An adjusting threaded column 14 is installed on the top of the screw 13. The top of the adjusting threaded column 14 is set in a spherical structure, and a hexagonal twisting block 15 is installed at the bottom of the screw 13;

[0034] The detection device 6 includes a laser detector and a plurality of targets. The laser detector is installed at the power output end of the rotating device 5, and the plurality of targets are respectively installed on the bridge.

[0035] In this embodiment, before use, the base 1 is installed on the bridge to be monitored, the detection device 6 is installed in the assembly box 3, the laser detector in the detection device 6 is installed on the rotating device 5, and multiple targets are respectively installed on various measuring points of the bridge. Then, the horizontal adjustment mechanism 4 is adjusted, and the four hexagonal twisting blocks 15 at the bottom of the assembly box 3 are rotated to make the hexagonal twisting blocks 15 drive the screw rod 13 to move up and down along the threaded seat 12, so that the screw rod 13 drives the adjusting threaded column 14 to move up or down, so that the top of the adjusting threaded column 14 pushes the horizontal adjustment plate 11, and the horizontal adjustment plate 11 drives the ball seat 10 to move along the ball 9. The horizontal position can be adjusted, and there is a spirit level at the bottom of the horizontal adjustment plate 11. The spirit level at the bottom of the horizontal adjustment plate 11 can be used to clearly check whether the horizontal adjustment plate 11 is in a horizontal state. When the horizontal adjustment plate 11 is adjusted to be horizontal, the transparent tempered glass 7 can be covered on the outside of the assembly box 3 for practical use. When in use, the rotating device 5 drives the laser detector to move, so that the laser beam emitted by the laser detector can be shot at the target, and the photosensitive sensor on the target receives the reflected light signal. By analyzing the position change of the light spot on the target, the displacement of the bridge can be accurately calculated, and the accuracy can reach millimeter or sub-millimeter level, which can be suitable for long-term monitoring of the bridge.

[0036] Embodiment 2, as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this embodiment adds the following structure on the basis of embodiment 1, reinforcement frames 16 are installed on both sides of the interior of the assembly box 3, sleeves 17 are installed on the reinforcement frames 16, and limit plates 18 are slidably installed on both sides of the interior of the sleeve 17, and the limit plates 18 are connected to the slide bar 19, one side of the slide bar 19 passes through the sleeve 17 and extends to the outside thereof, a locking block 20 is installed on the outside of the slide bar 19, a spring 21 is installed on the inside of the locking block 20, and the other side of the spring 21 is installed on the sleeve 17, and the locking block 20 is installed on the outside with a transmission plate 22, and the outside of the transmission plate 22 A movable block 23 is installed, an arc groove 24 is provided on the outer side of the movable block 23, a threaded limit block 25 is installed in the arc groove 24, a support guide seat 26 is slidably connected to the outer side of the movable block 23, the bottom of the support guide seat 26 is installed in the assembly box 3, tooth plates 27 are installed on the inner sides of the transmission plates 22 on both sides, a rotating gear 28 is meshingly installed between the tooth plates 27 on both sides, the rotating gear 28 is connected to a rotating rod 29, a hand push handle 30 is installed on the lower side of the rotating rod 29, a bearing 31 is installed at the bottom of the rotating rod 29, and the bearing 31 is installed in the assembly box 3.

[0037] In this embodiment, before adjusting the horizontal adjustment mechanism 4, the hand push handle 30 is first pushed, so that the hand push handle 30 drives the rotating rod 29 to rotate 90° along the bearing 31, so that the rotating rod 29 drives the rotating gear 28 to rotate. After the rotating gear 28 rotates, the toothed plates 27 meshing on both sides of the rotating gear 28 move, and then the toothed plate 27 drives the transmission plate 22, and the transmission plate 22 drives the movable block 23 to slide toward the middle along the support guide seat 26, so that the movable block 23 drives the threaded limit block 25 to withdraw from the limit fixation of the adjusting threaded column 14. At the same time, when the transmission plate 22 moves toward the middle, it will push the locking block 20, and the locking block 20 will push the sliding rod 19. The sliding rod 19 slides along the sleeve 17 and pushes the limit plate 18 in the sleeve 17. The locking block 20 can also be used to slide and improve the stability of the movement, and the locking block 20 can squeeze the spring 21, so that the spring 21 is compressed and deformed under the force, and after rebounding, when the threaded limit block 25 withdraws from the limiting fixation of the adjusting threaded column 14, the horizontal adjustment mechanism 4 can be adjusted. After the adjustment is completed, the hand push handle 30 is driven to reset. At this time, under the effect of the spring 21, the effect of automatic reset can be achieved, and the movable block 23 can also be pushed, so that the movable block 23 pushes the threaded limit block 25 to be squeezed on the adjusting threaded column 14, so that the threaded limit block 25 limits the lower side of the thread of the adjusting threaded column 14, and at the same time increases the friction force, so as to reduce the occurrence of errors in the use process, and the horizontal state of the horizontal adjustment plate 11 changes after the hexagonal twisting block 15 is operated.

[0038] Embodiment 3, as Figure 7 As shown, this embodiment adds the following structure on the basis of the embodiment 2: the inner bottom of the assembly box 3 is provided with a groove 32 on the inner side of the bearings 31 on both sides, and a movable limit block 33 is hingedly installed in the groove 32.

[0039] In this embodiment, during use, when the push handle 30 is pushed and rotated 90°, the movable limit block 33 in the groove 32 can be rotated to change the movable limit block 33 from a horizontal state to a vertical state. At this time, the hand pushing the push handle 30 can be released so that the movable limit block 33 can limit the push handle 30 to prevent it from resetting under the action of the rebound force of the spring 21.

[0040] Embodiment 4, as Figure 2 and Figure 3As shown, this embodiment adds the following structure on the basis of embodiment 1: a through groove 34 is provided in the middle position of the base 1, and mounting planes 35 are provided on both sides of the base 1. A protective seat 36 is installed on the mounting plane 35, and the protective seat 36 is provided with a slide groove 37. A guide rod 38 is installed in the slide groove 37. Buffer seats 39 are slidably connected to both sides of the guide rod 38. The buffer seats 39 on both sides are connected to buffer springs 40. The free ends of the buffer springs 40 are installed on the side walls of the slide groove 37. The buffer seat 39 is installed with a first hinge seat 41. The first hinge seat 41 is connected to a buffer rod 42. The other side of the buffer rod 42 is connected to a second hinge seat 43, and the second hinge seats 43 on both sides are connected to arc-shaped buffer plates 44.

[0041] In this embodiment, an arc-shaped buffer plate 44 is provided. During use, when an impact occurs, the arc-shaped buffer plate 44 is subjected to force to push the second hinged seat 43, the second hinged seat 43 pushes the buffer rod 42, the buffer rod 42 pushes the first hinged seat 41, and the first hinged seat 41 pushes the buffer seat 39 to slide in the slide groove 37 along the guide rod 38. The buffer seat 39 squeezes the buffer spring 40 while sliding, and the elastic potential energy of the buffer spring 40 reduces the damage to the base 1 caused by the impact, thereby improving the stable use of the detection device 6.

[0042] Embodiment 5, as Figure 2 and Figure 3 As shown, this embodiment adds the following structure on the basis of embodiment 1: a screw rod 45 is installed in the column 2, bearing seats 46 are installed on the upper and lower sides of the screw rod 45, a servo motor 47 is connected to the bottom of the screw rod 45, the servo motor 47 is installed in the through groove 34 of the base 1, the screw rod 45 is connected to a rectangular nut moving seat 48, and a push rod 49 is fixedly installed on the four sides of the rectangular nut moving seat 48, the top of the push rod 49 passes through the column 2 and is connected to a locking disk 50, and the locking disk 50 is locked and installed at the bottom of the assembly box 3.

[0043] In this embodiment, before use, the servo motor 47 can be started, and the servo motor 47 drives the screw rod 45 to rotate along the bearing seat 46, so that the rotating screw rod 45 drives the rectangular nut moving seat 48 to move up and down, and the rectangular nut moving seat 48 drives the push rod 49, and the top of the push rod 49 pushes the lock plate 50, and the lock plate 50 pushes the assembly box 3 to adjust the height position, thereby further improving the monitoring effect of the detection device 6.

[0044] Embodiment 6, as Figure 2 and Figure 3 As shown, this embodiment adds the following structure on the basis of embodiment 5: a protective shell 51 is provided on the outer side of the servo motor 47 , and the protective shell 51 is installed in the through groove 34 .

[0045] In this embodiment, by providing the protective shell 51 , the servo motor 47 can be protected from water and dust, thereby further extending the service life of the servo motor 47 .

[0046] Embodiment 7, as Figure 2 and Figure 3 As shown, this embodiment adds the following structure on the basis of embodiment 1: a mounting frame 52 is installed on the top of the assembly box 3, a solar panel 53 is installed on the mounting frame 52, and the output end of the solar panel 53 is connected to a battery 54, and the battery 54 is installed in the assembly box 3.

[0047] In this embodiment, when in use, solar energy can be converted into electrical energy through the solar panel 53, and the electrical energy is transmitted to the battery 54, which outputs the electrical energy for use, thereby achieving the effect of saving energy.

[0048] Embodiment 8, as Figure 1 , Figure 2 and Figure 6 As shown, this embodiment adds the following structure on the basis of embodiment 1: assembly seats 55 are installed on both sides of the assembly box 3, a mesh plate 56 is installed on the outer side of the assembly seat 55, a cooling fan 57 is installed on the inner side of the assembly seat 55, and a dustproof net 58 is installed between the mesh plate 56 and the cooling fan 57 of the assembly seat 55.

[0049] In this embodiment, when the heat energy emitted by the laser detector and the battery 54 during operation accumulates in the assembly box 3, the cooling fan 57 is started, and the heat in the assembly box 3 is discharged from the mesh plate 56 through the cooling fan 57, and the heat is quickly dissipated to achieve a rapid heat dissipation effect, and the dustproof net 58 can prevent external dust from entering.

[0050] Embodiment 9, as Figure 3 As shown, this embodiment adds the following structure on the basis of Embodiment 7, the output end of the battery 54 is connected to the rotating device 5, the detection device 6, the servo motor 47 and the cooling fan 57.

[0051] In this embodiment, during use, the battery 54 can supply power to the rotating device 5, the detecting device 6, the servo motor 47 and the cooling fan 57 to enable them to move.

[0052] A monitoring method for a bridge displacement monitoring device, characterized in that it comprises the following steps:

[0053] S1: Install the base 1 on the bridge to be monitored, install the laser detector in the detection device 6 on the rotating device 5, and install multiple targets on various measuring points of the bridge respectively;

[0054] S2: The horizontal adjustment mechanism 4 is adjusted to ensure that the laser detector is in a horizontal working state, and then the servo motor 47 can be started. The servo motor 47 drives the screw rod 45 to rotate along the bearing seat 46, so that the rotating screw rod 45 drives the rectangular nut moving seat 48 to move up and down, and the rectangular nut moving seat 48 drives the push rod 49. The top of the push rod 49 pushes the lock plate 50, and the lock plate 50 pushes the assembly box 3. The assembly box 3 drives the laser detector to adjust the height position;

[0055] S3: During use, the rotating device 5 drives the laser detector to move so that the laser beam emitted by the laser detector can be projected onto the target. The photosensitive sensor on the target receives the reflected light signal. By analyzing the position change of the light spot on the target, the displacement of the bridge can be accurately calculated with an accuracy of millimeters or sub-millimeter levels. After the laser detector performs laser monitoring on multiple targets, the target can be detected again after a period of time. Thus, through multiple detections and analysis of the detected data, the displacement of the bridge after long-term use can be calculated.

[0056] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A bridge displacement monitoring device, characterized in that: The invention comprises a base (1), a column (2) is installed on the top of the base (1), an assembly box (3) is installed on the top of the column (2), a horizontal adjustment mechanism (4) is installed on the inner bottom of the assembly box (3), a rotating device (5) is installed on the top of the horizontal adjustment mechanism (4), the rotating device (5) is connected to a detection device (6), and the assembly box (3) is installed with transparent tempered glass (7) on the outer side of the detection device (6); The horizontal adjustment mechanism (4) comprises a support column (8) installed at the bottom center of the assembly box (3), a ball (9) is installed on the top of the support column (8), a ball seat (10) is movably installed on the top of the ball (9), a horizontal adjustment plate (11) is installed on the top of the ball seat (10), the rotating device (5) is installed on the horizontal adjustment plate (11), threaded seats (12) are installed on the four sides of the bottom of the assembly box (3), a screw rod (13) is installed in the threaded seat (12), an adjustment threaded column (14) is installed on the top of the screw rod (13), the top of the adjustment threaded column (14) is spherical, and a hexagonal twisting block (15) is installed on the bottom of the screw rod (13); The detection device (6) comprises a laser detector and a plurality of targets, wherein the laser detector is installed at the power output end of the rotating device (5), and the plurality of targets are respectively installed on the bridge.

2. A bridge displacement monitoring device according to claim 1, characterized in that: Reinforcement frames (16) are installed on both sides of the interior of the assembly box (3), and a sleeve (17) is installed on the reinforcement frame (16). Limiting plates (18) are slidably installed on both sides of the interior of the sleeve (17), and the limiting plates (18) are connected to a sliding rod (19). One side of the sliding rod (19) passes through the sleeve (17) and extends to the outside thereof. A locking block (20) is installed on the outside of the sliding rod (19), and a spring (21) is installed on the inner side of the locking block (20). The other side of the spring (21) is installed on the sleeve (17). The locking block (20) is installed on the outer side with a transmission plate (22), and a movable block (23) is installed on the outer side of the transmission plate (22). An arc groove (24) is provided on the outer side of the movable block (23), a threaded limit block (25) is installed in the arc groove (24), a support guide seat (26) is slidably connected to the outer side of the movable block (23), the bottom of the support guide seat (26) is installed in the assembly box (3), tooth plates (27) are installed on the inner sides of the transmission plates (22) on both sides, a rotating gear (28) is meshed and installed between the tooth plates (27) on both sides, the rotating gear (28) is connected to a rotating rod (29), a hand push handle (30) is installed on the lower side of the rotating rod (29), a bearing (31) is installed at the bottom of the rotating rod (29), and the bearing (31) is installed in the assembly box (3).

3. A bridge displacement monitoring device according to claim 2, characterized in that: The inner bottom of the assembly box (3) is provided with grooves (32) on the inner sides of the bearings (31) on both sides, and movable limit blocks (33) are hingedly installed in the grooves (32).

4. A bridge displacement monitoring device according to claim 3, characterized in that: A through groove (34) is provided at the middle position of the base (1), and mounting planes (35) are provided on both sides of the base (1). A protective seat (36) is installed on the mounting plane (35), and the protective seat (36) is provided with a slide groove (37). A guide rod (38) is installed in the slide groove (37). Buffer seats (39) are slidably connected to the two sides of the guide rod (38), and the buffer seats (39) on both sides are connected to buffer springs (40). The free ends of the buffer springs (40) are installed on the side walls of the slide groove (37). The buffer seat (39) is installed with a first hinge seat (41), and the first hinge seat (41) is connected to a buffer rod (42). The other side of the buffer rod (42) is connected to a second hinge seat (43), and the second hinge seats (43) on both sides are connected to arc-shaped buffer plates (44).

5. A bridge displacement monitoring device according to claim 4, characterized in that: A screw rod (45) is installed in the column (2), and bearing seats (46) are installed on the upper and lower sides of the screw rod (45). The bottom of the screw rod (45) is connected to a servo motor (47), and the servo motor (47) is installed in the through groove (34) of the base (1). The screw rod (45) is connected to a rectangular nut moving seat (48), and a push rod (49) is fixedly installed on four sides of the rectangular nut moving seat (48). The top of the push rod (49) passes through the column (2) and is connected to a locking disk (50). The locking disk (50) is locked and installed at the bottom of the assembly box (3).

6. A bridge displacement monitoring device according to claim 5, characterized in that: A protective shell (51) is provided on the outer side of the servo motor (47), and the protective shell (51) is installed in the through slot (34).

7. A bridge displacement monitoring device according to claim 6, characterized in that: A mounting frame (52) is installed on the top of the assembly box (3), a solar panel (53) is installed on the mounting frame (52), an output end of the solar panel (53) is connected to a storage battery (54), and the storage battery (54) is installed in the assembly box (3).

8. A bridge displacement monitoring device according to claim 7, characterized in that: The assembly box (3) is provided with an assembly seat (55) on both sides, a mesh plate (56) is provided on the outer side of the assembly seat (55), a cooling fan (57) is provided on the inner side of the assembly seat (55), and a dustproof net (58) is provided between the mesh plate (56) and the cooling fan (57) of the assembly seat (55).

9. The bridge displacement monitoring device according to claim 8, characterized in that: The output end of the storage battery (54) is connected to the rotating device (5), the detecting device (6), the servo motor (47) and the cooling fan (57).

10. A monitoring method based on the bridge displacement monitoring device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Install the base on the bridge to be monitored, install the laser detector in the detection device on the rotating device, and install multiple targets on various measuring points of the bridge; S2: Adjust the horizontal adjustment mechanism to ensure that the laser detector is in a horizontal working state, then start the servo motor, the servo motor drives the lead screw to rotate along the bearing seat, so that the rotating lead screw drives the rectangular nut moving seat to move up and down, the rectangular nut moving seat drives the push rod, the top of the push rod pushes the lock plate, the lock plate pushes the assembly box, and the assembly box drives the laser detector to adjust the height position; S3: During use, the rotating device drives the laser detector to move so that the laser beam emitted by the laser detector can be projected onto the target. The photosensitive sensor on the target receives the reflected light signal. By analyzing the position change of the light spot on the target, the displacement of the bridge can be accurately calculated. After the laser detector performs laser monitoring on multiple targets, the target can be detected again after a period of time. Thus, through multiple detections and analysis of the detected data, the displacement of the bridge after long-term use can be calculated.

Images