Dynamic displacement measuring device for bridge health state monitoring

Abstract

The utility model relates to the technical field of bridge monitoring equipment, and discloses a dynamic displacement measuring device for monitoring the health state of a bridge, which comprises a bridge body, and the front surface of the bridge body is movably connected with a first fixing plate. According to the dynamic displacement measuring device for bridge health state monitoring, when a bridge generates dynamic displacement, a vertical block is extruded, so that the vertical block drives a rack to move downwards, the rack is engaged with a gear, the rack drives a circular shaft to rotate through the gear, and then the circular shaft drives an extrusion shaft to rotate through a rotating rod; at the moment, an extrusion shaft extrudes a metal rod in rotation to enable the metal rod to move rightwards along the surface of a conductive square rod, a metal block slides along the surface of a copper wire under the driving of the metal rod, the resistance value of current entering the copper wire is increased, and then a resistance sensor detects resistance change and sends information to a worker in real time. Therefore, the dynamic displacement of the bridge can be accurately monitored in real time.

Description

Technical Field

[0001] This utility model relates to the field of bridge monitoring equipment technology, and more specifically, to a dynamic displacement measuring device for monitoring the health status of bridges. Background Technology

[0002] A bridge generally refers to a structure built across rivers, lakes, or seas to allow vehicles and pedestrians to pass smoothly. To adapt to the rapidly developing modern transportation industry, the term "bridge" has also come to refer to structures built across mountains, challenging geological conditions, or to meet other transportation needs, making travel more convenient.

[0003] In existing technologies, when vehicles frequently cross a bridge, the bridge's internal materials are subjected to alternating stresses due to repeated dynamic displacements. If these alternating stresses exceed the material's fatigue limit, micro-cracks will form within the material, endangering the overall safety of the bridge. Furthermore, since bridges are composed of multiple components connected by connectors, dynamic displacements will generate additional stresses and deformations at the connection points, affecting the collaborative work between components and weakening the overall structural performance of the bridge. Traditional bridge health monitoring mostly relies on regular inspections by staff using equipment. However, this method is difficult to monitor the bridge's condition in real time and is susceptible to interference from external vibrations, resulting in significant data errors. Therefore, it sometimes fails to detect subtle changes in the bridge, necessitating improvements. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a dynamic displacement measuring device for bridge health status monitoring, which has the advantage of real-time and accurate monitoring of the vertical displacement of the bridge.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dynamic displacement measuring device for bridge health status monitoring, comprising:

[0006] The bridge body has a first fixing plate movably connected to its front side, and a fixing box is fixedly installed on the outer surface of the first fixing plate.

[0007] The monitoring device is housed inside a fixed enclosure;

[0008] The monitoring mechanism includes a rack, the outer surface of which is movably sleeved with the interior of the top of the fixed box. A gear is meshed with the outer surface of the rack, and a round shaft is fixedly sleeved inside the gear. The rear end of the round shaft is movably sleeved with the interior of the fixed box. A rotating rod is fixedly sleeved with the front end of the round shaft. A pressing shaft is fixedly sleeved inside the bottom end of the rotating rod. A metal rod is movably connected to the outer surface of the pressing shaft. A conductive square rod is movably sleeved inside the top end of the metal rod. Both ends of the conductive square rod are fixedly connected to the interior of the fixed box. A metal block is fixedly installed on the front of the metal rod. A copper wire is slidably connected to the outer surface of the metal block. An insulating block is fixedly sleeved inside the copper wire. Both ends of the insulating block are fixedly connected to the interior of the fixed box. A resistance sensor is provided at the left end of the copper wire, and the outer surface of the resistance sensor is fixedly connected to the interior of the fixed box.

[0009] As a preferred embodiment of this utility model, a vertical block is movably sleeved inside the top of the first fixing plate, the top of the vertical block abuts against the outer surface of the bridge body, and the bottom of the vertical block is fixedly connected to the top of the rack.

[0010] As a preferred embodiment of this utility model, a spring is fixedly installed on the outer surface of the vertical block, and the other end of the spring is fixedly connected to the outer surface of the first fixing plate.

[0011] As a preferred technical solution of this utility model, a fixing block is fixedly installed at the bottom end of the first fixing plate, the back of the fixing block is in contact with the outer surface of the bridge body, and limit grooves are opened on both the left and right sides of the front of the fixing block.

[0012] As a preferred embodiment of this utility model, a second fixing plate is fixedly installed at the bottom end of the fixing block. The back of the second fixing plate is in contact with the outer surface of the bridge body. A cylinder is fixedly sleeved inside the bottom end of the second fixing plate, and a lifting plate is fixedly installed at the top end of the cylinder.

[0013] As a preferred embodiment of this utility model, a hinge block is fixedly installed at the top of the lifting plate, a movable rod is hinged inside the hinge block, and a short shaft is movably sleeved inside the other end of the movable rod.

[0014] As a preferred embodiment of this utility model, a slider is fixedly installed at the rear end of the short shaft, the outer surface of the slider is slidably connected to the inside of the limiting groove, a movable block is fixedly installed at the rear end of the slider, and a clamping plate is fixedly installed on the outer surface of the movable block.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This dynamic displacement measuring device for bridge health status monitoring compresses a vertical block when the bridge experiences dynamic displacement. This causes the vertical block to drive a rack downwards. Since the rack meshes with a gear, the rack drives a circular shaft to rotate via the gear. The circular shaft then drives a pressing shaft to rotate via a rotating rod. During this rotation, the pressing shaft compresses a metal rod, causing it to move to the right along the surface of the conductive square rod. The metal block then slides along the surface of a copper wire under the influence of the metal rod. At this point, the resistance of the current entering the copper wire increases. Subsequently, a resistance sensor detects the resistance change and sends information to the staff in real time, thereby enabling real-time and accurate monitoring of the bridge's dynamic displacement.

[0017] 2. This dynamic displacement measuring device for bridge health status monitoring, when the cylinder is running, will drive the lifting plate downward. At this time, the lifting plate will drive two movable rods to move through the hinge block. Then, the two movable rods will drive two sliders to move through the two short shafts. At this time, the two sliders will drive two movable blocks and two clamping plates to move towards each other along the inside of the limiting groove. Then, the two clamping plates will clamp the bridge body in the opposite direction, so that the measuring device can be easily installed with the bridge. Due to the design of the clamping plates, the fixing effect of the measuring device can be guaranteed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is a cross-sectional view of the fixing block of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the clamping plate of this utility model;

[0022] Figure 5 This is a cross-sectional view of the fixing box of this utility model;

[0023] Figure 6 This is a schematic diagram of the motion rod structure of this utility model.

[0024] In the diagram: 1. Bridge body; 2. First fixing plate; 3. Fixing box; 4. Rack; 5. Gear; 6. Round shaft; 7. Rotating rod; 8. Extrusion shaft; 9. Metal rod; 10. Conductive square rod; 11. Metal block; 12. Copper wire; 13. Insulating block; 14. Resistance sensor; 15. Vertical block; 16. Spring; 17. Fixing block; 18. Limiting groove; 19. Second fixing plate; 20. Cylinder; 21. Lifting plate; 22. Hinge block; 23. Movable rod; 24. Short shaft; 25. Slider; 26. Movable block; 27. Clamping plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1 to 6 As shown, this utility model provides a dynamic displacement measuring device for bridge health status monitoring, comprising:

[0027] The bridge body 1 has a first fixing plate 2 movably connected to its front side, and a fixing box 3 is fixedly installed on the outer surface of the first fixing plate 2.

[0028] The monitoring agency is located inside the fixed box 3;

[0029] The monitoring mechanism includes a rack 4, the outer surface of which is movably connected to the inside of the top of the fixed box 3. A gear 5 is meshed with the outer surface of the rack 4. A round shaft 6 is fixedly connected inside the gear 5. The rear end of the round shaft 6 is movably connected to the inside of the fixed box 3. A rotating rod 7 is fixedly connected to the front end of the round shaft 6. A pressing shaft 8 is fixedly connected to the bottom end of the rotating rod 7. A metal rod 9 is movably connected to the outer surface of the pressing shaft 8. A conductive square rod 10 is movably connected to the top end of the metal rod 9. Both ends of the conductive square rod 10 are fixedly connected to the inside of the fixed box 3. A metal block 11 is fixedly installed on the front of the metal rod 9. A copper wire 12 is slidably connected to the outer surface of the metal block 11. An insulating block 13 is fixedly connected inside the copper wire 12. Both ends of the insulating block 13 are fixedly connected to the inside of the fixed box 3. A resistance sensor 14 is provided at the left end of the copper wire 12. The outer surface of the resistance sensor 14 is fixedly connected to the inside of the fixed box 3.

[0030] Due to the design of the conductive square rod 10, electricity can be transmitted to the interior of the metal rod 9. The electricity inside the metal rod 9 can be conducted to the copper wire 12 via the metal block 11. Due to the design of the resistance sensor 14, the resistance value of the copper wire 12 can be monitored in real time. Since the outer surface of the rack 4 is movably connected to the interior of the top of the fixed box 3, and since the rack 4 is meshed with the gear 5, when the rack 4 moves downward along the interior of the top of the fixed box 3, it will drive the round shaft 6 to rotate through the gear 5. At this time, the round shaft 6 will drive the pressing shaft 8 to rotate through the rotating rod 7. At this time, the pressing shaft 8 will press the interior of the metal rod 9 during rotation, causing the metal rod 9 to move to the right along the surface of the conductive square rod 10. At this time, the metal block 11 will slide along the surface of the copper wire 12 under the action of the metal rod 9. At this time, the resistance value of the current entering the interior of the copper wire 12 will increase. At this time, the resistance sensor 14 will detect the resistance change and send information to the staff's mobile phone in real time via the network.

[0031] Among them, a vertical block 15 is movably sleeved inside the top of the first fixed plate 2, the top of the vertical block 15 abuts against the outer surface of the bridge body 1, and the bottom of the vertical block 15 is fixedly connected to the top of the rack 4.

[0032] When a vehicle passes the top of the bridge body 1, it will cause the bridge body 1 to move dynamically. At this time, the bridge body 1 will squeeze the top of the vertical block 15, causing the vertical block 15 to move downward along the inside of the first fixed plate 2. At this time, the rack 4 will move downward under the action of the vertical block 15.

[0033] A spring 16 is fixedly installed on the outer surface of the vertical block 15, and the other end of the spring 16 is fixedly connected to the outer surface of the first fixing plate 2.

[0034] When the vertical block 15 moves, it will cause the spring 16 to deform. Due to the elastic force of the spring 16, the movement of the vertical block 15 will have a good restoring effect.

[0035] Among them, a fixing block 17 is fixedly installed at the bottom of the first fixing plate 2. The back of the fixing block 17 is in contact with the outer surface of the bridge body 1. Limiting grooves 18 are opened on both the left and right sides of the front of the fixing block 17.

[0036] Due to the design of the two limiting slots 18, the object located inside them will be limited to moving only left and right.

[0037] The bottom end of the fixing block 17 is fixedly installed with a second fixing plate 19. The back of the second fixing plate 19 is in contact with the outer surface of the bridge body 1. The bottom end of the second fixing plate 19 is fixedly sleeved with a cylinder 20. The top end of the cylinder 20 is fixedly installed with a lifting plate 21.

[0038] When cylinder 20 is running, the top of cylinder 20 will drive the lifting plate 21 to move downward.

[0039] The top of the lifting plate 21 is fixedly installed with a hinge block 22, and a movable rod 23 is hinged inside the hinge block 22. A short shaft 24 is movably sleeved inside the other end of the movable rod 23.

[0040] When the lifting plate 21 moves downward, it will drive the two movable rods 23 to move through the hinge block 22. At this time, the other ends of the two movable rods 23 will drive the two short shafts 24 to move respectively.

[0041] Among them, a slider 25 is fixedly installed at the rear end of the short shaft 24, the outer surface of the slider 25 is slidably connected to the inside of the limiting groove 18, a movable block 26 is fixedly installed at the rear end of the slider 25, and a clamping plate 27 is fixedly installed on the outer surface of the movable block 26.

[0042] When the two short shafts 24 move, they will drive the two sliders 25 to move along the inside of the limiting groove 18. Due to the limiting inside the two limiting grooves 18, the two sliders 25 will move towards each other along the inside of the two limiting grooves 18. At the same time, the two sliders 25 will drive the two clamping plates 27 to move towards each other through the two movable blocks 26. Then, the two clamping plates 27 will clamp the bridge body 1 in the process of moving towards each other, so that the measuring device can be easily connected to the bridge body 1. Furthermore, due to the design of the clamping plate 27, the connection strength between the measuring device and the bridge body 1 can be enhanced.

[0043] Working principle and usage process of this utility model:

[0044] First, the operator places the back sides of the first fixing plate 2, fixing block 17, and second fixing plate 19 against the outer surface of the bridge body 1. At this time, the top of the vertical block 15 will abut against the surface of the bridge body 1. Then, the operator activates the cylinder 20. The top of the cylinder 20 will drive the lifting plate 21 to move downward. At this time, the lifting plate 21 will drive the two movable rods 23 to move through the hinge block 22. At the same time, the other ends of the two movable rods 23 will drive the two short shafts 24 to move. The two short shafts 24 will then drive the two sliders 25 to move along the inside of the two limiting grooves 18. Due to the design of the inside of the two limiting grooves 18, the two sliders will move along the inside of the two limiting grooves 18. The movement of block 25 is limited. At this time, the two sliders 25 will move towards each other along the inside of the two limiting grooves 18 under the drive of the two short shafts 24. At this time, the two sliders 25 will drive the two clamping plates 27 to move towards each other through the two movable blocks 26. When the two clamping plates 27 contact the outer surface of the bridge body 1 during the movement towards each other, the two clamping plates 27 will clamp and fix the outer surface of the bridge body 1, thereby realizing the function of making it convenient to install the measuring device with the bridge body 1. Due to the shape design of the clamping plate 27, the clamping effect of the clamping plate 27 on the bridge body 1 can be increased, making the connection between the measuring device and the bridge body 1 more secure.

[0045] When a vehicle passes over the bridge body 1, it causes the bridge body 1 to shift downwards. At this time, the bridge body 1 compresses the top of the vertical block 15, causing the vertical block 15 to move downwards along the interior of the first fixed plate 2. During this process, the vertical block 15 causes the spring 16 to deform. Due to the design of the spring 16, it can effectively reset the movement of the vertical block 15. Simultaneously, the vertical block 15 drives the rack 4 to move downwards along the interior of the top of the fixed box 3. Since the outer surface of the rack 4 meshes with the outer surface of the gear 5, when the rack 4 moves downwards, it drives the gear 5 to rotate. The gear 5 then drives the round shaft 6 to rotate around the point of engagement with the fixed box 3. Simultaneously, the round shaft 6 drives the rotating rod 7 to rotate, and then the rotating rod 7 drives the extruder... The pressure shaft 8 rotates around the circular shaft 6. During this rotation, the outer surface of the pressure shaft 8 will squeeze and push the interior of the metal rod 9, causing the metal rod 9 to move to the right along the outer surface of the conductive square rod 10. At this time, the metal rod 9 will drive the metal block 11 to slide along the outer surface of the copper wire 12. Since the conductive square rod 10 can transmit power to the interior of the metal block 11 through the metal rod 9, and the power entering the interior of the metal block 11 can enter the interior of the resistance sensor 14 through the copper wire 12, the internal resistance of the metal block 11 will increase when it slides to the right along the copper wire 12. At this time, the resistance sensor 14 will detect the change in resistance and send information to the staff's mobile phone in real time via the network, thereby realizing the function of real-time and accurate monitoring of the dynamic displacement of the bridge body 1.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dynamic displacement measuring device for monitoring the health status of bridges, characterized in that, Including: The bridge body (1) has a first fixing plate (2) movably connected to its front side, and a fixing box (3) is fixedly installed on the outer surface of the first fixing plate (2). The monitoring mechanism is located inside the fixed box (3); The monitoring mechanism includes a rack (4), the outer surface of which is movably sleeved with the inside of the top of the fixed box (3). A gear (5) is meshed with the outer surface of the rack (4). A round shaft (6) is fixedly sleeved inside the gear (5). The rear end of the round shaft (6) is movably sleeved with the inside of the fixed box (3). A rotating rod (7) is fixedly sleeved at the front end of the round shaft (6). A pressing shaft (8) is fixedly sleeved inside the bottom end of the rotating rod (7). A metal rod (9) is movably connected to the outer surface of the pressing shaft (8). The inner surface of the top end of the metal rod (9) is... A conductive square rod (10) is movably sleeved on the part. Both ends of the conductive square rod (10) are fixedly connected to the inside of the fixed box (3). A metal block (11) is fixedly installed on the front of the metal rod (9). A copper wire (12) is slidably connected to the outer surface of the metal block (11). An insulating block (13) is fixedly sleeved inside the copper wire (12). Both ends of the insulating block (13) are fixedly connected to the inside of the fixed box (3). A resistance sensor (14) is provided at the left end of the copper wire (12). The outer surface of the resistance sensor (14) is fixedly connected to the inside of the fixed box (3).

2. The dynamic displacement measuring device for bridge health monitoring according to claim 1, characterized in that: A vertical block (15) is movably sleeved inside the top of the first fixing plate (2). The top of the vertical block (15) abuts against the outer surface of the bridge body (1), and the bottom of the vertical block (15) is fixedly connected to the top of the rack (4).

3. The dynamic displacement measuring device for bridge health monitoring according to claim 2, characterized in that: A spring (16) is fixedly installed on the outer surface of the vertical block (15), and the other end of the spring (16) is fixedly connected to the outer surface of the first fixing plate (2).

4. The dynamic displacement measuring device for bridge health monitoring according to claim 1, characterized in that: A fixing block (17) is fixedly installed at the bottom end of the first fixing plate (2). The back of the fixing block (17) is in contact with the outer surface of the bridge body (1). Limiting grooves (18) are opened on the left and right sides of the front of the fixing block (17).

5. The dynamic displacement measuring device for bridge health monitoring according to claim 4, characterized in that: The bottom end of the fixing block (17) is fixedly installed with a second fixing plate (19). The back of the second fixing plate (19) is in contact with the outer surface of the bridge body (1). The bottom end of the second fixing plate (19) is fixedly sleeved with a cylinder (20). The top end of the cylinder (20) is fixedly installed with a lifting plate (21).

6. The dynamic displacement measuring device for bridge health monitoring according to claim 5, characterized in that: A hinge block (22) is fixedly installed at the top of the lifting plate (21). A movable rod (23) is hinged inside the hinge block (22). A short shaft (24) is movably sleeved inside the other end of the movable rod (23).

7. A dynamic displacement measuring device for bridge health monitoring according to claim 6, characterized in that: A slider (25) is fixedly installed at the rear end of the short shaft (24). The outer surface of the slider (25) is slidably connected to the inside of the limiting groove (18). A movable block (26) is fixedly installed at the rear end of the slider (25). A clamping plate (27) is fixedly installed on the outer surface of the movable block (26).

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