A bridge construction displacement monitoring device

Abstract

The invention discloses a bridge construction displacement monitoring device, which relates to the field of bridge safety and includes an infrared monitoring sensor, wherein the front and rear of the infrared monitoring sensor are both provided with a connection structure, wherein the connection structure includes a fixed ball seat, wherein the interior of the fixed ball seat penetrates through the front and is rotatably connected to a ball hinge body, wherein the outer surface of the ball hinge body is fixedly connected to a connecting rod 1, wherein one end of the connecting rod 1 is fixedly connected to a connecting frame, wherein a sliding plate is provided inside the connecting frame, wherein the top, bottom and both sides of the sliding plate are fixedly connected to sliders, wherein four sliding grooves are provided inside the connecting frame, wherein six springs are provided between the rear of the sliding plate and the rear of the interior of the connecting frame, and a ball shell is fixedly installed at the front of the sliding plate. By providing a connection structure, the invention not only prolongs the service life of the device, but also ensures the accuracy and reliability of the monitoring data.

Description

Technical Field

[0001] The invention relates to the field of bridge safety, and in particular to a bridge construction displacement monitoring device. Background Art

[0002] Bridges are divided into bridge piers and piers. It is normal for bridges to expand and contract due to heat during daily use. In order to prevent the bridge from breaking due to thermal expansion and contraction, the bridge is designed in multiple sections. There will be a gap between each section of the bridge, which is called the bridge expansion joint. In order to prevent the bridge from expanding and contracting too much, making the expansion joint too short or too long, causing bridge damage and safety accidents, monitoring equipment is needed to monitor the length of the bridge expansion joint to avoid the expansion joint being too long or too short.

[0003] The existing bridge construction displacement monitoring device is directly and rigidly connected to the bridge. Therefore, when the bridge expands and contracts due to heat, the monitoring device will undergo rigid deformation, which will cause damage to the monitoring device. After the bridge is opened to traffic, there will be vehicles driving on the bridge deck, causing the bridge to vibrate slightly, which will in turn drive the monitoring device to vibrate, causing deviations in the length of the monitored expansion joint, making the monitoring verticality inaccurate, and causing resonance between the monitoring device and the bridge, thereby inducing damage to the monitoring device. Summary of the invention

[0004] The main purpose of the present invention is to provide a bridge construction displacement monitoring device, which can effectively solve the technical problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A bridge construction displacement monitoring device, comprising an infrared monitoring sensor, wherein the front and rear of the infrared monitoring sensor are both provided with a connection structure, wherein the connection structure comprises a fixed ball seat, wherein the interior of the fixed ball seat penetrates the front portion and is rotatably connected to a ball hinge body, wherein the outer surface of the ball hinge body is fixedly connected to a connecting rod 1, and one end of the connecting rod 1 is fixedly connected to a connecting frame;

[0007] A sliding plate is provided inside the connecting frame, and sliders are fixedly connected to the top, bottom and both sides of the sliding plate, four sliding grooves are opened inside the connecting frame, six springs are provided between the rear part of the sliding plate and the rear part of the interior of the connecting frame, a ball shell is fixedly installed on the front part of the sliding plate, a ball is rotatably connected to the interior of the ball shell through the front part, and the outer surface of the ball is fixedly connected to connecting rod 2.

[0008] As a further solution of the present invention, one end of the spring is fixedly connected to the rear portion of the sliding plate, and the other end of the spring is fixedly connected to the rear portion of the interior of the connection frame.

[0009] As a further solution of the present invention, the sliding block is located inside the sliding groove, and the sliding block is slidably connected to the sliding groove.

[0010] As a further solution of the present invention, the front portion of the fixed ball seat passes through the rear portion and is threadedly connected with six fixing bolts, and the fixed ball seat is embedded and fixedly installed on the side of the bridge body by the six fixing bolts.

[0011] As a further scheme of the present invention, the adjacent ends of the two connecting rods 2 are provided with a retaining structure, and the retaining structure includes a connecting ring 1 and a connecting ring 2, the adjacent ends of the two connecting rods 2 are fixedly connected to the connecting ring 1, the inner ring of the connecting ring 1 is rotatably connected to the two rotating rods 1, the adjacent ends of the two rotating rods 1 are rotatably connected to the outer surface of the connecting ring 2, the inner ring of the connecting ring 2 is rotatably connected to the two rotating rods 2, the adjacent ends of the two rotating rods 2 are rotatably connected to a connecting body, the bottom of the infrared monitoring sensor is fixedly connected to the top of the connecting body, and a counterweight block is fixedly installed on the bottom of the connecting body.

[0012] As a further solution of the present invention, the weight of the counterweight block is greater than the weight of the connector and the infrared monitoring sensor as a whole, the top of the counterweight block is in the shape of a truncated cone, and the bottom of the counterweight block is in the shape of a cylinder.

[0013] As a further solution of the present invention, the two rotating rods 1 are located on the same axis, the two rotating rods 2 are located on the same axis, and the axes of the two rotating rods 1 and the axes of the two rotating rods 2 are arranged in a cross shape.

[0014] As a further scheme of the present invention, the outer surfaces of the two connecting rods are provided with swinging floating structures near the top and the bottom, and the swinging floating structure includes a rotating rod 1 and a rotating rod 2, the outer surface of the connecting rod 2 is fixedly connected to a fixed block 1 near one end of the top, one end of the rotating rod 1 is rotatably connected to the fixed block 1, one side of the rotating rod 1 is fixedly connected to a vertical rotating shaft by the other end passing through the other side, the other end of the rotating rod 1 is rotatably connected to the rotating rod 2 through the vertical rotating shaft, the top of the rotating rod 2 is fixedly connected to a horizontal rotating shaft by one end passing through the bottom, one end of the rotating rod 2 is rotatably connected to the fixed block 2 through the horizontal rotating shaft, the top and bottom of the fixed block 2 are fixedly installed with fixing boxes, and both sides of the rotating rod 2 are fixedly installed with fixing boxes near the other end, the fixed boxes are rotatably connected with a straight rod inside, and the outer surface of the straight rod is fixedly connected to six deceleration fan blades, and one side of the deceleration fan blade passes through the other side and a plurality of holes are opened.

[0015] As a further solution of the present invention, one end of the deceleration blade is fitted with the inner wall of the fixed box, the interior of the fixed box is located between two connected deceleration blades and is filled with damping oil, and the second fixed block is fixedly installed on the side of the bridge body.

[0016] As a further solution of the present invention, the top and bottom of the horizontal rotating shaft respectively pass through the interior of the two vertically installed fixed boxes and are fixedly connected to the two straight rods, the two ends of the vertical rotating shaft respectively pass through the interior of the two horizontally installed fixed boxes and are fixedly connected to the two straight rods, the rotation direction between the rotating rod one and the rotating rod two is the vertical direction, the rotation direction between the rotating rod two and the fixed block two is the horizontal direction, and the top of the infrared monitoring sensor is higher than the top height of the fixed block two.

[0017] The beneficial effects of the present invention are as follows:

[0018] By setting up a connection structure and adopting multiple elastic connection methods, the elastic connection method of the fixed ball seat, ball hinge body and connection frame allows the monitoring device to deform elastically freely with the thermal expansion and contraction of the bridge body. This design not only extends the service life of the device, but also ensures the accuracy and reliability of the monitoring data;

[0019] Through the elastic connection, when the bridge body vibrates slightly due to the passage of vehicles, the monitoring device will not vibrate along with the bridge body, thus reducing the possibility of resonance between the device and the bridge body, thereby ensuring the stability of the device and further extending its service life.

[0020] By setting up a holding structure, no matter whether the bridge body shakes up and down or left and right, the holding structure can respond to the shaking in time, so that the infrared monitoring sensor can maintain a vertical and stable state, effectively suppressing the influence of small vibrations caused by vehicles running on the bridge on the infrared sensor. This anti-shake design ensures the continuous and stable operation of the monitoring device, thereby improving the accuracy and practicality of the monitoring data;

[0021] By setting up a swing-floating structure, it can respond to the left and right, up and down shaking of the bridge body. Through the coordinated work of the rotating rod 1, the transmission rod 2 and the deceleration fan blades, the damping oil inside the multiple fixed boxes slowly flows between the multiple deceleration fan blades through a number of holes, effectively reducing the swing amplitude of the monitoring device. This stability improvement measure ensures that the monitoring device can operate stably and continuously output accurate data under various environmental conditions;

[0022] By utilizing the optimized combination of rotating rod 1, rotating rod 2, fixed block 1 and deceleration fan blades, the adaptability of the monitoring device to vibrations in different directions is effectively controlled. This carefully designed structure not only improves the reliability of the device, but also simplifies the maintenance and adjustment process, further optimizing the overall performance of the bridge monitoring system.

[0023] The monitoring device effectively ensures the safe operation of the bridge structure through precise monitoring, flexible connection design and improved anti-interference ability, and provides important technical support and data basis for bridge safety supervision and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a bridge construction displacement monitoring device according to the present invention;

[0025] Figure 2 This is a schematic diagram of a bridge construction displacement monitoring device of the present invention installed inside a bridge body expansion joint;

[0026] Figure 3 This is a dissection diagram of the connection structure of a bridge construction displacement monitoring device of the present invention;

[0027] Figure 4 This is a rear perspective view of a dissected connection structure of a bridge construction displacement monitoring device according to the present invention;

[0028] Figure 5 A schematic diagram of a retaining structure of a bridge construction displacement monitoring device according to the present invention;

[0029] Figure 6 A top view of a retaining structure of a bridge construction displacement monitoring device according to the present invention;

[0030] Figure 7 This is a dissecting diagram of the floating structure after a bridge construction displacement monitoring device of the present invention is installed inside the expansion joint of the bridge body;

[0031] Figure 8 A bridge construction displacement monitoring device according to the present invention Figure 7 A magnified view of part A;

[0032] Fig. 9 This is a horizontal split diagram of the rotating rod 1, rotating rod 2, and fixed block 2 structures of a bridge construction displacement monitoring device of the present invention.

[0033] In the figure: 1. infrared monitoring sensor; 2. connecting structure; 3. holding structure; 4. pendulum floating structure; 5. bridge body; 6. fixed ball seat; 7. ball joint body; 8. connecting rod 1; 9. connecting frame; 10. sliding plate; 11. slider; 12. slide groove; 13. ball shell; 14. sphere; 15. connecting rod 2; 16. connecting ring 1; 17. connecting ring 2; 18. connecting body; 19. counterweight block; 20. rotating rod 1; 21. rotating rod 2; 22. fixed block 1; 23. rotating rod 1; 24. rotating rod 2; 25. fixed block 2; 26. fixed box; 27. straight rod; 28. deceleration fan blade; 29. ​​horizontal rotating shaft; 30. vertical rotating shaft; 31. spring. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] like Figure 1 - Fig. 9 As shown, a bridge construction displacement monitoring device includes an infrared monitoring sensor 1, the front and rear of the infrared monitoring sensor 1 are both provided with a connecting structure 2, the connecting structure 2 includes a fixed ball seat 6, the interior of the fixed ball seat 6 penetrates the front and is rotatably connected to a ball hinge body 7, the outer surface of the ball hinge body 7 is fixedly connected to a connecting rod 8, and one end of the connecting rod 8 is fixedly connected to a connecting frame 9;

[0036] A sliding plate 10 is provided inside the connecting frame 9, and sliders 11 are fixedly connected to the top, bottom and both sides of the sliding plate 10. Four sliding grooves 12 are opened inside the connecting frame 9. Six springs 31 are provided between the rear part of the sliding plate 10 and the rear part of the interior of the connecting frame 9. A ball shell 13 is fixedly installed at the front part of the sliding plate 10. A ball 14 is rotatably connected to the interior of the ball shell 13 passing through the front part, and a connecting rod 15 is fixedly connected to the outer surface of the ball 14.

[0037] In this embodiment, one end of the spring 31 is fixedly connected to the rear portion of the sliding plate 10, and the other end of the spring 31 is fixedly connected to the rear portion of the inner portion of the connecting frame 9;

[0038] Two fixed ball seats 6 are respectively embedded and fixedly installed on the adjacent sides of the two sections of the bridge body 5 by multiple fixing bolts. The gap between the two sections of the bridge body 5 is the bridge expansion joint. When the fixed ball seats 6 are installed, since the top of the infrared monitoring sensor 1 is higher than the top height of the fixed block 25, the top of the infrared monitoring sensor 1 will emit infrared rays to the bridge bodies 5 at both ends. The length of the infrared rays is the length of the expansion joint. By monitoring the length of the infrared rays, the displacement of the bridge body 5 due to thermal expansion and contraction can be monitored.

[0039] When the bridge body 5 undergoes thermal expansion, the two sections of the bridge body 5 move closer to each other, driving the two connecting structures 2 to move closer to each other. The infrared monitoring sensor 1 does not move relative to the two sections of the bridge body 5, thereby shortening the length of the infrared rays emitted by the infrared monitoring sensor 1, which means that the expansion joint becomes shorter. When the bridge body 5 undergoes cold contraction, its movement is the same as above.

[0040] The process of the connection structure 2 moving due to thermal expansion is that the fixed ball seat 6, the ball hinge body 7, the connecting rod 8 and the connection frame 9 move together, while the sliding plate 10 does not move compared to the connection frame 9, that is, the connection frame 9 slides along the sliding plate 10 through the mutual cooperation of the four sliding grooves 12 and the four sliding blocks 11, and the multiple springs 31 thereof are stretched;

[0041] When the bridge body 5 expands or contracts due to thermal expansion and contraction, the fixed ball seat 6 and the ball hinge body 7 are elastically connected, the ball shell 13 and the ball body 14 are also elastically connected, and the connecting frame 9 and the sliding plate 10 are also elastically connected. Therefore, the monitoring device will not only undergo elastic deformation along with the thermal expansion and contraction of the bridge body 5 when the bridge body 5 expands or contracts due to thermal expansion and contraction, but also undergo elastic deformation due to multiple elastic connections, making it less likely for the monitoring device to be damaged.

[0042] In this embodiment, the slider 11 is located inside the slide groove 12 , and the slider 11 is slidably connected to the slide groove 12 .

[0043] In this embodiment, the front portion of the fixed ball seat 6 passes through the rear portion and is threadedly connected with six fixing bolts, and the fixed ball seat 6 is embedded and fixedly installed on the side of the bridge body 5 by the six fixing bolts.

[0044] In this embodiment, the close ends of the two connecting rods 15 are provided with a holding structure 3, and the holding structure 3 includes a connecting ring 16 and a connecting ring 17. The close ends of the two connecting rods 15 are fixedly connected to the connecting ring 16, and the inner ring of the connecting ring 16 is rotatably connected to two rotating rods 1 20. The close ends of the two rotating rods 1 20 are rotatably connected to the outer surface of the connecting ring 17. The inner ring of the connecting ring 17 is rotatably connected to two rotating rods 21. The close ends of the two rotating rods 21 are rotatably connected to a connecting body 18. The bottom of the infrared monitoring sensor 1 is fixedly connected to the top of the connecting body 18, and a counterweight 19 is fixedly installed at the bottom of the connecting body 18.

[0045] After the bridge is opened to traffic, there will be vehicles driving on the bridge deck, causing the bridge body 5 to vibrate slightly. The holding structure 3 can prevent the infrared monitoring sensor 1 from remaining stationary, so that the infrared monitoring sensor 1 will not vibrate along with the bridge body 5, thereby ensuring that the infrared monitoring sensor 1 will not generate inaccurate monitoring data due to the vibration of the bridge body 5.

[0046] The working principle of the holding structure 3 is that the bridge body 5 vibrates, causing the connecting structure 2 to vibrate together, and then causing the connecting rod 2 15 to vibrate. When the connecting rod 2 15 vibrates up and down, the connecting ring 1 16 does not move compared to the connecting ring 1 16, and the connecting ring 2 17 rotates along the front-back direction. However, due to the action of the counterweight 19, the connecting body 18, the infrared monitoring sensor 1 and the connecting ring 2 17 do not rotate, so that they always maintain a vertical state, ensuring the accuracy of the monitoring data.

[0047] When the connecting rod 2 15 shakes left and right, it drives the connecting ring 16 to rotate left and right, and drives the connecting ring 2 17 to rotate left and right through the two rotating rods 1 20. The connecting body 18 and the infrared monitoring sensor 1 are under the left and right of the counterweight block 19 and will not shake left and right, so that the infrared monitoring sensor 1 always remains in a vertical state.

[0048] In this embodiment, the weight of the counterweight 19 is greater than the weight of the connector 18 and the infrared monitoring sensor 1 as a whole. The top of the counterweight 19 is in the shape of a truncated cone, and the bottom of the counterweight 19 is in the shape of a cylinder.

[0049] In this embodiment, the two first rotating rods 20 are located on the same axis, the two second rotating rods 21 are located on the same axis, and the axes of the two first rotating rods 20 and the axes of the two second rotating rods 21 are arranged in a cross shape.

[0050] In this embodiment, the outer surfaces of the two connecting rods 15 are both provided with a swinging floating structure 4 near the top and the bottom. The swinging floating structure 4 includes a rotating rod 1 23 and a rotating rod 24. The outer surface of the connecting rod 2 15 is fixedly connected to a fixed block 22 near one end of the top. One end of the rotating rod 1 23 is rotatably connected to the fixed block 22. One side of the rotating rod 1 23 is fixedly connected to a vertical rotating shaft 30 passing through the other side. The other end of the rotating rod 1 23 is rotatably connected to the rotating rod 2 24 through the vertical rotating shaft 30. The rotating rod 2 2 A horizontal rotating shaft 29 is fixedly connected to the top of the second rotating rod 24 by one end and penetrates through the bottom. One end of the second rotating rod 24 is rotatably connected to the second fixed block 25 through the horizontal rotating shaft 29. The top and bottom of the second fixed block 25 are fixedly installed with a fixing box 26. The two sides of the second rotating rod 24 are also fixedly installed with a fixing box 26 by the other end. The interior of the fixing box 26 is rotatably connected to a straight rod 27. The outer surface of the straight rod 27 is fixedly connected to six deceleration blades 28. One side of the deceleration blade 28 penetrates through the other side and a plurality of holes are opened;

[0051] When the bridge body 5 shakes left and right, the connecting rod 2 15 moves left and right, and through the cooperation of the rotating rod 1 23 and the fixed block 1 22, the rotating rod 24 and the horizontal rotating shaft 29 are driven to rotate horizontally along the fixed block 25. When the rotating horizontal rotating shaft 29 rotates horizontally, the two straight rods 27 fixedly connected thereto are driven to rotate together, and then the multiple speed reduction blades 28 fixed thereto are rotated together, so that the damping oil inside the two fixed boxes 26 slowly flows between the multiple speed reduction blades 28 through a number of holes, so that the rotation speed of the speed reduction blades 28 is reduced, and then the rotation speed of the rotating rod 24 is reduced. Therefore, when the bridge body 5 shakes left and right and drives the monitoring device to swing left and right, its swing amplitude is greatly reduced, thereby improving the left and right stability of the monitoring device after being elastically connected to the two sections of the bridge body 5 through the two connecting structures 2;

[0052] When the bridge body 5 shakes up and down, the connecting rod 2 15 moves up and down. Since the rotating rod 24 and the fixed block 25 can only rotate horizontally, when the connecting rod 2 15 moves up and down, the rotating rod 24 does not move, and the rotating rod 1 23 rotates up and down. Similarly to the above, the up and down rotation speed of the rotating rod 1 23 is reduced. Therefore, when the bridge body 5 shakes up and down and drives the monitoring device to swing up and down, its swing amplitude is greatly reduced. Therefore, the up and down stability of the monitoring device after being elastically connected to the two sections of the bridge body 5 through the two connecting structures 2 is improved.

[0053] In this embodiment, one end of the deceleration blade 28 is in contact with the inner wall of the fixed box 26 , and the interior of the fixed box 26 between two connected deceleration blades 28 is filled with damping oil, and the fixed block 25 is fixedly installed on the side of the bridge body 5 .

[0054] In this embodiment, the top and bottom of the horizontal rotating shaft 29 respectively pass through the interior of the two vertically installed fixed boxes 26 and are fixedly connected to the two straight rods 27, and the two ends of the vertical rotating shaft 30 respectively pass through the interior of the two horizontally installed fixed boxes 26 and are fixedly connected to the two straight rods 27. The rotation direction between the rotating rod 1 23 and the rotating rod 2 24 is the vertical direction, and the rotation direction between the rotating rod 2 24 and the fixed block 2 25 is the horizontal direction. The top of the infrared monitoring sensor 1 is higher than the top height of the fixed block 25.

[0055] It should be noted that the present invention is a bridge construction displacement monitoring device. When in use, two fixed ball seats 6 are respectively embedded and fixedly installed on the adjacent sides of two sections of the bridge body 5 by multiple fixing bolts. The gap between the two sections of the bridge body 5 is the bridge expansion joint. When the fixed ball seats 6 are installed, since the top of the infrared monitoring sensor 1 is higher than the top height of the fixed block 25, the top of the infrared monitoring sensor 1 will emit infrared rays to the bridge bodies 5 at both ends. The length of the infrared rays is the length of the expansion joint. By monitoring the length of the infrared rays, the displacement of the bridge body 5 due to thermal expansion and contraction can be monitored.

[0056] When the bridge body 5 undergoes thermal expansion, the two sections of the bridge body 5 move closer to each other, driving the two connecting structures 2 to move closer to each other. The infrared monitoring sensor 1 does not move relative to the two sections of the bridge body 5, thereby shortening the length of the infrared rays emitted by the infrared monitoring sensor 1, which means that the expansion joint becomes shorter. When the bridge body 5 undergoes cold contraction, its movement is the same as above.

[0057] The process of the connection structure 2 moving due to thermal expansion is that the fixed ball seat 6, the ball hinge body 7, the connecting rod 1 8 and the connection frame 9 move together, while the sliding plate 10 does not move compared to the connection frame 9, that is, the connection frame 9 slides along the sliding plate 10 through the mutual cooperation of the four sliding grooves 12 and the four sliding blocks 11, and the multiple springs 31 thereof are stretched;

[0058] When the bridge body 5 undergoes thermal expansion and contraction, since the fixed ball seat 6 and the ball hinge body 7 are elastically connected, the ball shell 13 and the ball body 14 are also elastically connected, and the connecting frame 9 and the sliding plate 10 are also elastically connected, the monitoring device not only undergoes elastic deformation along with the thermal expansion and contraction of the bridge body 5 when the bridge body 5 undergoes thermal expansion and contraction, but also undergoes multiple elastic connection modes, making the monitoring device less likely to be damaged;

[0059] After the bridge is opened to traffic, there will be vehicles driving on the bridge deck, causing the bridge body 5 to vibrate slightly. The holding structure 3 can prevent the infrared monitoring sensor 1 from remaining stationary, so that the infrared monitoring sensor 1 will not vibrate along with the bridge body 5, thereby ensuring that the infrared monitoring sensor 1 will not generate inaccurate monitoring data due to the vibration of the bridge body 5.

[0060] The working principle of the holding structure 3 is that the bridge body 5 vibrates, causing the connecting structure 2 to vibrate together, and then causing the connecting rod 2 15 to vibrate. When the connecting rod 2 15 vibrates up and down, the connecting ring 1 16 does not move compared to the connecting ring 1 16, and the connecting ring 2 17 rotates along the front-back direction. However, due to the action of the counterweight 19, the connecting body 18, the infrared monitoring sensor 1 and the connecting ring 2 17 do not rotate, so that they always maintain a vertical state, ensuring the accuracy of the monitoring data.

[0061] When the connecting rod 2 15 shakes left and right, it drives the connecting ring 1 16 to rotate left and right, and drives the connecting ring 2 17 to rotate left and right through the two rotating rods 1 20, while the connecting body 18 and the infrared monitoring sensor 1 are under the left and right of the counterweight block 19, and will not shake left and right, so that the infrared monitoring sensor 1 always maintains a vertical state;

[0062] When the bridge body 5 shakes left and right, the connecting rod 2 15 moves left and right, and through the cooperation of the rotating rod 1 23 and the fixed block 1 22, the rotating rod 24 and the horizontal rotating shaft 29 are driven to rotate horizontally along the fixed block 25. When the rotating horizontal rotating shaft 29 rotates horizontally, the two straight rods 27 fixedly connected thereto are driven to rotate together, and then the multiple speed reduction blades 28 fixed thereto are rotated together, so that the damping oil inside the two fixed boxes 26 slowly flows between the multiple speed reduction blades 28 through a number of holes, so that the rotation speed of the speed reduction blades 28 is reduced, and then the rotation speed of the rotating rod 24 is reduced. Therefore, when the bridge body 5 shakes left and right and drives the monitoring device to swing left and right, its swing amplitude is greatly reduced, thereby improving the left and right stability of the monitoring device after being elastically connected to the two sections of the bridge body 5 through the two connecting structures 2;

[0063] When the bridge body 5 shakes up and down, the connecting rod 2 15 moves up and down. Since the rotating rod 24 and the fixed block 25 can only rotate horizontally, when the connecting rod 2 15 moves up and down, the rotating rod 24 does not move, and the rotating rod 1 23 rotates up and down. Similarly to the above, the up and down rotation speed of the rotating rod 1 23 is reduced. Therefore, when the bridge body 5 shakes up and down and drives the monitoring device to swing up and down, its swing amplitude is greatly reduced. Therefore, the up and down stability of the monitoring device after being elastically connected to the two sections of the bridge body 5 through the two connecting structures 2 is improved.

[0064] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A bridge construction displacement monitoring device, comprising an infrared monitoring sensor (1), characterized in that: The front and rear parts of the infrared monitoring sensor (1) are both provided with a connection structure (2), the connection structure (2) comprising a fixed ball seat (6), the interior of the fixed ball seat (6) passing through the front part and rotatably connected to a ball hinge body (7), the outer surface of the ball hinge body (7) is fixedly connected to a connecting rod 1 (8), and one end of the connecting rod 1 (8) is fixedly connected to a connecting frame (9); A sliding plate (10) is arranged inside the connecting frame (9), and sliders (11) are fixedly connected to the top, bottom and both sides of the sliding plate (10). Four sliding grooves (12) are provided inside the connecting frame (9), and six springs (31) are arranged between the rear of the sliding plate (10) and the rear of the interior of the connecting frame (9). A ball shell (13) is fixedly installed at the front of the sliding plate (10), and a ball (14) is rotatably connected to the interior of the ball shell (13) penetrating the front, and a second connecting rod (15) is fixedly connected to the outer surface of the ball (14); One end of the spring (31) is fixedly connected to the rear portion of the sliding plate (10), and the other end of the spring (31) is fixedly connected to the rear portion of the interior of the connecting frame (9); The slider (11) is located inside the slide groove (12), and the slider (11) is slidably connected to the slide groove (12); The front part of the fixed ball seat (6) passes through the rear part and is threadedly connected with six fixing bolts, and the fixed ball seat (6) is embedded and fixedly installed on the side of the bridge body (5) by the six fixing bolts; The adjacent ends of the two connecting rods (15) are provided with a retaining structure (3), the retaining structure (3) comprising a connecting ring (16) and a connecting ring (17), the adjacent ends of the two connecting rods (15) are fixedly connected to the connecting ring (16), the inner ring of the connecting ring (16) is rotatably connected to two rotating rods (20), the adjacent ends of the two rotating rods (20) are rotatably connected to the outer surface of the connecting ring (17), the inner ring of the connecting ring (17) is rotatably connected to two rotating rods (21), the adjacent ends of the two rotating rods (21) are rotatably connected to a connecting body (18), the bottom of the infrared monitoring sensor (1) is fixedly connected to the top of the connecting body (18), and a counterweight (19) is fixedly installed on the bottom of the connecting body (18); The weight of the counterweight block (19) is greater than the weight of the connecting body (18) and the infrared monitoring sensor (1) as a whole, the top of the counterweight block (19) is in the shape of a truncated cone, and the bottom of the counterweight block (19) is in the shape of a cylinder; The two rotating rods 1 (20) are located on the same axis, the two rotating rods 2 (21) are located on the same axis, and the axes of the two rotating rods 1 (20) and the axes of the two rotating rods 2 (21) are arranged in a cross shape; The outer surfaces of the two connecting rods (15) are both provided with a swinging floating structure (4) near the top and the bottom, and the swinging floating structure (4) comprises a rotating rod (23) and a rotating rod (24). The outer surface of the connecting rod (15) is fixedly connected to a fixed block (22) near one end of the top, and one end of the rotating rod (23) is rotatably connected to the fixed block (22). One side of the rotating rod (23) is fixedly connected to a vertical rotating shaft (30) passing through the other side, and the other end of the rotating rod (23) is rotatably connected to the rotating rod (24) via the vertical rotating shaft (30). The rotating rod (24) is ) is fixedly connected with a horizontal rotating shaft (29) at one end of the top of the rotating rod (24) and passing through the bottom; one end of the rotating rod (24) is rotatably connected with a fixed block (25) via the horizontal rotating shaft (29); a fixed box (26) is fixedly installed at the top and bottom of the fixed block (25); a fixed box (26) is also fixedly installed at the other end of both sides of the rotating rod (24); a straight rod (27) is rotatably connected inside the fixed box (26); six deceleration blades (28) are fixedly connected to the outer surface of the straight rod (27); one side of the deceleration blade (28) passes through the other side and is provided with a plurality of holes; One end of the deceleration blade (28) is in contact with the inner wall of the fixing box (26); the interior of the fixing box (26) is located between two connected deceleration blades (28) and is filled with damping oil; and the second fixing block (25) is fixedly mounted on the side of the bridge body (5); The top and bottom of the horizontal rotating shaft (29) respectively penetrate the interior of the two vertically mounted fixed boxes (26) and are fixedly connected to the two straight rods (27); the two ends of the vertical rotating shaft (30) respectively penetrate the interior of the two horizontally mounted fixed boxes (26) and are fixedly connected to the two straight rods (27); the rotating direction between the rotating rod 1 (23) and the rotating rod 2 (24) is a vertical direction; the rotating direction between the rotating rod 2 (24) and the fixed block 2 (25) is a horizontal direction; and the top of the infrared monitoring sensor (1) is higher than the top height of the fixed block 2 (25).

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