Bridge deformation monitoring device

Abstract

The application relates to a bridge deformation monitoring device, which comprises a telescopic detection mechanism, a dislocation detection mechanism and a control feedback mechanism. The telescopic detection mechanism comprises two supporting plates vertically arranged in the inside of a telescopic joint and a telescopic measuring rod arranged between the two supporting plates, a single supporting plate is connected to a single steel beam of a bridge telescopic joint device, the telescopic measuring rod is vertically arranged with the supporting plate, and the two ends of the telescopic measuring rod are spherically connected with the supporting plate. The dislocation detection mechanism comprises a detection ring sleeved at the end of the telescopic measuring rod, an elastic connecting piece arranged between the detection ring and the supporting plate and a dislocation sensor hinged between the detection ring and the supporting plate, a gap is left between the detection ring and the telescopic measuring rod, and the elastic connecting piece and the dislocation sensor are both arranged with a plurality of pieces in the circumferential direction of the detection ring. The control feedback mechanism comprises a mounting plate and a controller, the telescopic measuring rod and the dislocation sensor are both electrically connected to the controller, and the controller is internally provided with a wireless sending module. The application has the effect of improving the use safety of the bridge.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bridge detection, in particular to a bridge deformation monitoring device. BACKGROUND

[0002] The deformation joint is the general term of expansion joint, settlement joint and shock absorption joint. In order to meet the requirements of bridge deformation, space is usually reserved between the two beam ends of the bridge, between the beam end and the abutment or at the hinged position of the bridge, and the bridge expansion joint device is arranged. The expansion joint can freely expand in two directions parallel and perpendicular to the bridge axis, is firm and reliable, and should be smooth, without sudden jump and noise when the vehicle passes. The expansion joint mainly adjusts the displacement between the superstructure caused by vehicle load and bridge building materials and connection.

[0003] After the bridge is built and put into use, the general staff will regularly detect the expansion joint of the bridge by special measuring equipment to ensure that the expansion joint can be normally used. Not only the use cost is high, but also only the condition of the expansion joint at a certain time can be measured, and the state of the bridge expansion joint cannot be comprehensively monitored, which affects the safety of the bridge use. SUMMARY

[0004] In order to comprehensively monitor the deformation state of the bridge and improve the safety of the bridge use, the present application provides a bridge deformation monitoring device.

[0005] The bridge deformation monitoring device provided by the present application adopts the following technical scheme:

[0006] A bridge deformation monitoring device, comprising: an expansion detection mechanism, the expansion detection mechanism comprising two supporting plates vertically arranged inside the expansion joint and an expansion measuring rod arranged between the two supporting plates, a single supporting plate being connected to a single steel beam of the bridge expansion joint device, the expansion measuring rod being arranged vertically to the supporting plate, the two ends of the expansion measuring rod being ball-jointed to the supporting plate, and the expansion measuring rod being used for detecting the distance between the two supporting plates;

[0007] A misalignment detection mechanism, the misalignment detection mechanism comprising a detection ring sleeved on the end of the expansion measuring rod, an elastic connecting piece arranged between the detection ring and the supporting plate, and a misalignment sensor hinged between the detection ring and the supporting plate, a gap being left between the detection ring and the expansion measuring rod, and the elastic connecting piece and the misalignment sensor each being arranged in several along the circumference of the detection ring;

[0008] A control feedback mechanism, the control feedback mechanism comprising a mounting plate arranged on the connecting plate and a controller arranged at the bottom of the mounting plate, the mounting plate being arranged horizontally, the expansion measuring rod and the misalignment sensor each being electrically connected to the controller, and the controller being internally provided with a wireless sending module.

[0009] By adopting the technical scheme, the telescopic measuring rod is connected between the two supporting plates, when the gap between the two steel beams in the bridge expansion device changes, the distance between the two supporting plates is monitored in real time by the telescopic measuring rod, and the data is transmitted to the controller. At the same time, if the two supporting plates are misaligned, the telescopic measuring rod will be greatly inclined, and the data of the misalignment sensor will be transmitted to the controller.

[0010] The controller receives and analyzes the data of the telescopic measuring rod and the misalignment sensor, if the misalignment sensor data is normal and the displacement value measured by the telescopic measuring rod is large, it indicates that the expansion joint is too large. If the misalignment sensor data is abnormal and the displacement value measured by the telescopic measuring rod is large but within a certain range, it indicates that the bridge is misaligned. The specific data is set according to the site conditions, when the value is abnormal, the wireless sending module built-in the controller sends an alarm to the staff, reminding the staff to check the site, to ensure the safe use of the bridge. In addition, the overall structure of the application is simple, reliable, low cost and suitable for wide use.

[0011] Optionally, the two supporting plates are provided with ball head seats on the side close to each other, the telescopic measuring rod comprises a ball head connected inside each ball head seat, a connecting shaft connected to each ball head, and a displacement sensor arranged between the two connecting shafts, and the two ends of the displacement sensor are provided with connecting sleeves, and the connecting sleeves and the connecting shafts can produce axial displacement.

[0012] By adopting the above technical scheme, the ball head seat and the ball head are connected, so that the telescopic measuring rod rotates more freely, when the distance between the two connecting shafts changes, the data of the displacement sensor will change. The connecting sleeve and the connecting shaft can produce axial displacement, so that the overall length of the telescopic measuring rod can be adjusted, and the telescopic measuring rod can be shortened for installation.

[0013] Optionally, the connecting sleeve and the connecting shaft are threadedly connected, and the threads on the two connecting shafts are opposite in rotation direction.

[0014] By adopting the above technical scheme, rotating the connecting sleeve will cause axial displacement between the connecting sleeve and the connecting shaft, thereby adjusting the length of the telescopic measuring rod.

[0015] Optionally, the connecting sleeve is sleeved on the outside of the connecting shaft, and a locking screw is threadedly connected to the connecting sleeve, the locking screw penetrates through the connecting sleeve and abuts against the connecting shaft.

[0016] By adopting the above technical scheme, when the locking screw is loosened, the connecting sleeve and the connecting shaft can be slidably connected, so as to realize the length adjustment of the telescopic measuring rod. After adjustment, the locking screw can be tightened.

[0017] Optionally, the connecting shaft is provided with a abutting plane along the axial direction thereof, and the end of the locking screw is provided with a friction pad which abuts against the abutting plane.

[0018] By adopting the above technical scheme, the locking screw with the friction pad abuts against the abutting plane, thereby increasing the friction between the locking screw and the connecting shaft, improving the locking effect, and reducing the possibility of axial displacement between the connecting sleeve and the connecting shaft during work.

[0019] Optionally, the connecting shaft is provided with a limiting groove along the axial direction thereof, and the connecting sleeve is provided with a limiting block which is in sliding fit with the limiting groove.

[0020] By adopting the above technical scheme, the limiting block and the limiting groove are in sliding fit, thereby circumferentially limiting the connecting shaft, and reducing the possibility that the locking screw cannot abut against the abutting plane after the connecting shaft rotates.

[0021] Optionally, the detection ring is provided with one at each end of the telescopic measuring rod, and the gap between the inner circle of one detection ring and the telescopic measuring rod is greater than the gap between the inner circle of the other detection ring and the telescopic measuring rod.

[0022] By adopting the above technical scheme, two detection rings are provided, and the gaps between the inner circles of the two detection rings and the telescopic measuring rod are inconsistent, thereby grading the misalignment degree of the bridge.

[0023] Optionally, the elastic connecting piece is located on the side of the detection ring body close to the supporting plate, the elastic connecting piece is a spring or an elastic rod, and the axis of the elastic connecting piece is parallel to the axis of the detection ring.

[0024] By adopting the above technical scheme, the spring or the elastic rod is used to connect the detection ring to the supporting plate, thereby realizing the fixation of the detection ring while enabling the detection ring to move.

[0025] Optionally, the misalignment sensor is arranged on the outer circle of the detection ring, and the end of the misalignment sensor away from the detection ring is inclined away from the center of the detection ring.

[0026] By adopting the above technical scheme, the misalignment sensor is arranged on the outer circle of the detection ring in an inclined manner, thereby providing a larger arrangement space for the misalignment sensor and improving the adaptability of the misalignment sensor.

[0027] Optionally, the two supporting plates are provided with horizontal supporting portions on the sides close to each other, the supporting portions are close to the bottom positions of the supporting plates, and the mounting plate is arranged on the supporting portions.

[0028] By adopting the above technical scheme, the mounting plate is supported by the supporting portions, thereby making the work of the mounting plate more stable and reducing the possibility of falling of the mounting plate.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. The telescopic measuring rod is connected between two supporting plates. When the gap between the two steel beams in the bridge expansion device changes, the distance between the two supporting plates is monitored in real time by the telescopic measuring rod, and the data is transmitted to the controller. At the same time, if the two supporting plates are misaligned, the telescopic measuring rod will be greatly inclined, and the misalignment sensor data will be transmitted to the controller. The controller receives and analyzes the data of the telescopic measuring rod and the misalignment sensor. If the misalignment sensor data is normal and the displacement value measured by the telescopic measuring rod is large, it indicates that the expansion joint is too large. If the misalignment sensor data is abnormal and the displacement value measured by the telescopic measuring rod is large but within a certain range, it indicates that the bridge is misaligned. The specific data is set according to the site conditions. When the value is abnormal, the wireless sending module built-in the controller sends an alarm to the staff, reminding the staff to check the site and ensure the safe use of the bridge. The overall structure of the present application is simple, reliable, low in cost, and suitable for wide use.

[0031] 2. The ball head seat and the ball head are connected, so that the telescopic measuring rod can rotate more freely. When the distance between the two connecting shafts changes, the data of the displacement sensor will change. The connecting sleeve and the connecting shaft can produce axial displacement, so that the overall length of the telescopic measuring rod can be adjusted, and the telescopic measuring rod can be shortened for installation.

[0032] 3. Two detection rings are provided, and the gaps between the inner circles of the two detection rings and the telescopic measuring rod are inconsistent, so as to classify and monitor the misalignment degree of the bridge. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the embodiment 1 of the present application.

[0034] Figure 2 It is a schematic diagram of the misalignment detection mechanism structure in the embodiment 1 of the present application.

[0035] Figure 3 It is a schematic diagram of the connecting structure of the connecting shaft and the connecting sleeve in the embodiment 2 of the present application.

[0036] Figure 4 It is a schematic diagram of the structure of the connecting shaft itself in the embodiment 2 of the present application.

[0037] Figure 5 It is a schematic diagram of the connecting structure of the limiting block and the limiting groove in the embodiment 2 of the present application.

[0038] Explanation of reference signs:

[0039] 01, steel beam; 1, expansion detection mechanism; 11, supporting plate; 111, ball head seat; 112, supporting part; 12, expansion measuring rod; 121, ball head; 122, connecting shaft; 123, displacement sensor; 124, connecting sleeve; 2, misalignment detection mechanism; 21, detection ring; 22, elastic connecting piece; 23, misalignment sensor; 3, control feedback mechanism; 31, mounting plate; 32, controller; 4, locking screw; 41, friction pad; 51, abutting plane; 52, limiting groove; 53, limiting block. DETAILED DESCRIPTION

[0040] The application will be further described below with reference to the accompanying drawings. Figures 1-5 The application will be further described below with reference to the accompanying drawings.

[0041] The application discloses a bridge deformation monitoring device.

[0042] Embodiment 1

[0043] Referring to Figure 1 A bridge deformation monitoring device, comprising an expansion detection mechanism 1, a misalignment detection mechanism 2 and a control feedback mechanism 3, the expansion detection mechanism 1 and the misalignment detection mechanism 2 are both arranged between two steel beams 01 of a bridge expansion joint device, the size of the expansion joint is detected through the expansion detection mechanism 1, the misalignment degree of the bridge is detected through the misalignment detection mechanism 2, and data is transmitted to the control feedback mechanism 3, the data is monitored and analyzed through the control feedback mechanism 3, and the staff is timely alarmed when there is a safety hazard.

[0044] Referring to Figure 1 and Figure 2 The expansion detection mechanism 1 comprises a supporting plate 11 and an expansion measuring rod 12, the supporting plate 11 is vertically arranged, and two supporting plates 11 are arranged in parallel, a single supporting plate 11 is fixedly connected to a single steel beam 01 of the bridge expansion joint device, and the fixing mode can adopt the form of spot welding. A ball head seat 111 is fixedly arranged on one side of each of the two supporting plates 11. The expansion measuring rod 12 comprises a ball head 121, a connecting shaft 122 and a displacement sensor 123, one ball head 121 is journally arranged in each ball head seat 111, and the ball diameter of the ball head 121 is greater than the opening of the ball head seat 111. One connecting shaft 122 is fixedly connected to each ball head 121, and the displacement sensor 123 is located between the two connecting shafts 122. Connecting sleeves 124 are fixedly arranged at both ends of the displacement sensor 123, the connecting sleeves 124 are threadedly connected to the connecting shafts 122, and the thread rotation directions of the two connecting shafts 122 are opposite.

[0045] Referring to Figure 1 and Figure 2, when installing, the length of the telescopic measuring rod 12 can be adjusted by rotating the connecting sleeve 124, so that the telescopic detection mechanism 1 is conveniently installed between the two steel beams 01 of the bridge expansion joint device. When the size of the expansion joint changes, the value of the displacement sensor 123 will change, so that the distance between the two supporting plates 11 is monitored in real time through the telescopic measuring rod 12, and the data is transmitted to the control feedback mechanism 3.

[0046] With reference to Figure 2 , the dislocation detection mechanism 2 comprises a detection ring 21, an elastic connecting piece 22 and a dislocation sensor 23, the detection ring 21 is sleeved outside each connecting shaft 122, a gap is left between the detection ring 21 and the telescopic measuring rod 12, and the gap between the inner circle of one detection ring 21 and the telescopic measuring rod 12 is greater than the gap between the inner circle of the other detection ring 21 and the telescopic measuring rod 12. The elastic connecting piece 22 is provided between each detection ring 21 and each supporting plate 11, and three are taken as an example in the embodiment, the three elastic connecting pieces 22 are distributed along the circumferential direction of the detection ring 21, the elastic connecting piece 22 is a spring or an elastic rod, and a cylindrical elastic rod is taken as an example in the embodiment, the elastic rod is made of rubber, and the axis of the elastic connecting piece 22 is parallel to the axis of the detection ring 21. The detection ring 21 is elastically supported by the elastic rod.

[0047] With reference to Figure 2 , the dislocation sensor 23 is provided on the outer circle of each detection ring 21, and two are taken as an example in the embodiment, one dislocation sensor 23 is located directly below the detection ring 21, the central angle of the detection ring 21 between the two dislocation sensors 23 is 90°, and the dislocation sensor 23 is a linear displacement sensor in the embodiment. One end of the dislocation sensor 23 is hinged to the outer circle of the detection ring 21, the other end of the dislocation sensor 23 is inclined away from the center of the detection ring 21, and is hinged to the supporting plate 11. The dislocation sensor 23 is arranged on the outer circle of the detection ring 21, so that the dislocation sensor 23 has more arrangement space, thereby adapting to more types of linear displacement sensors 123.

[0048] With reference to Figure 2 , when the two supporting plates 11 are greatly dislocated during work, the telescopic measuring rod 12 will be greatly tilted, and when the tilt amplitude of the telescopic measuring rod 12 reaches a certain degree, the detection ring 21 will be touched, and the dislocation sensor 23 will generate an electric signal after the detection ring 21 moves, one dislocation sensor 23 mainly monitors the dislocation in the horizontal direction, and the other dislocation sensor 23 mainly monitors the dislocation in the vertical direction, and transmits the electric signal to the control feedback mechanism 3, and the data is processed through the control feedback mechanism 3.

[0049] With reference to Figure 1 and Figure 2, the control feedback mechanism 3 comprises a mounting plate 31 and a controller 32, and the two supporting plates 11 are integrally formed with supporting portions 112 on the side close to each other, the supporting portions 112 are horizontally arranged and located at the bottom of the supporting plates 11. The opposite sides of the mounting plate 31 are fixedly connected to the supporting portions 112, and the controller 32 is fixedly arranged at the bottom of the mounting plate 31. The controller 32 is internally provided with a wireless sending module and is electrically connected to the displacement sensor 123 and the dislocation sensor 23.

[0050] With reference to Figure 2 , the controller 32 receives and analyzes the data of the telescopic measuring rod 12 and the dislocation sensor 23. If the data of the dislocation sensor 23 is normal and the displacement value of the displacement sensor 123 is large, it indicates that the expansion joint is too large. If the data of the dislocation sensor 23 is abnormal and the displacement value of the displacement sensor 123 is large but within a certain range, it indicates that the bridge has dislocation. If the data of the dislocation sensor 23 is normal and the displacement value of the displacement sensor 123 is large, it indicates that the bridge dislocation is serious. The specific data is set according to the site condition. When the value is abnormal, the wireless sending module in the controller 32 sends an alarm to the staff, reminding the staff to conduct on-site inspection and ensure the safe use of the bridge.

[0051] The implementation principle of the bridge deformation monitoring device in the embodiment is as follows: during the use of the bridge, the two supporting plates 11 move synchronously with the two steel beams 01 in the bridge expansion device, the controller 32 receives and processes the electrical signals of the displacement sensor 123 and the dislocation sensor 23. When the expansion joint is large, the distance between the two supporting plates 11 is large, and the inclination range of the telescopic measuring rod 12 is small, which indicates that the expansion joint is too large. When the bridge has dislocation, the distance between the two supporting plates 11 is large, and the inclination range of the telescopic measuring rod 12 is large and collides with the measuring ring, which indicates that the bridge has dislocation. When the controller 32 analyzes the data and finds that the bridge has safety hazards, the wireless sending module in the controller 32 sends an alarm to the staff, reminding the staff to conduct on-site inspection and finally ensure the safe use of the bridge.

[0052] Embodiment 2

[0053] With reference to Figure 3 , the difference between the embodiment and the embodiment 1 is that the connecting sleeve 124 is slidably arranged outside the connecting shaft 122, the locking screw 4 is threadedly connected to the connecting sleeve 124 and abuts against the connecting shaft 122. After the locking screw 4 is tightened, the connecting sleeve 124 is locked, so that the connecting sleeve 124 and the connecting shaft 122 cannot axially slide.

[0054] With reference to Figure 4 and Figure 5In order to improve the locking effect of the locking screw 4, the connecting shaft 122 is provided with a resisting flat surface 51 along the axial direction, a limiting groove 52 is formed on the connecting shaft 122 along the axial direction, and a limiting block 53 is fixedly arranged on the connecting sleeve 124 and is in sliding fit with the limiting groove 52, so that the relative rotation between the connecting shaft 122 and the connecting sleeve 124 is not easy to occur. The friction pad 41 is fixedly arranged at the end of the locking screw 4 and is in abutment with the resisting flat surface 51. Thus, the friction pad 41 is in abutment on the resisting flat surface 51, so that the locking screw 4 works more reliably.

[0055] The implementation principle of the embodiment 2 is that when the locking screw 4 is loosened, the connecting sleeve 124 and the connecting shaft 122 are in sliding fit, so as to adjust the length of the telescopic measuring rod 12. After adjustment, the locking screw 4 is tightened, so that the friction pad 41 is in abutment on the resisting flat surface 51.

[0056] The above are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made on the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A bridge deformation monitoring device, characterized in that, include: The expansion joint detection mechanism (1) includes two support plates (11) vertically arranged inside the expansion joint and an expansion measuring rod (12) arranged between the two support plates (11). Each support plate (11) is connected to a single steel beam (01) of the bridge expansion joint device. The expansion measuring rod (12) is arranged perpendicularly to the support plate (11). Both ends of the expansion measuring rod (12) are ball-jointed with the support plate (11). The expansion measuring rod (12) is used to detect the distance between the two support plates (11). The misalignment detection mechanism (2) includes a detection ring (21) sleeved on the end of the telescopic measuring rod (12), an elastic connector (22) disposed between the detection ring (21) and the support plate (11), and a misalignment sensor (23) hinged between the detection ring (21) and the support plate (11). A gap is left between the detection ring (21) and the telescopic measuring rod (12). Several of the elastic connector (22) and the misalignment sensor (23) are arranged around the detection ring (21). The control feedback mechanism (3) includes a mounting plate (31) on the connecting plate and a controller (32) at the bottom of the mounting plate (31). The mounting plate (31) is horizontally positioned. The telescopic measuring rod (12) and the misalignment sensor (23) are electrically connected to the controller (32). The controller (32) has a built-in wireless transmission module.

2. The bridge deformation monitoring device according to claim 1, characterized in that: Both of the two trays (11) are provided with ball head seats (111) on their adjacent sides. The telescopic measuring rod (12) includes a ball head (121) connected inside each ball head seat (111), a connecting shaft (122) connected to each ball head (121), and a displacement sensor (123) provided between the two connecting shafts (122). Both ends of the displacement sensor (123) are provided with connecting sleeves (124), and axial displacement can be generated between the connecting sleeves (124) and the connecting shafts (122).

3. The bridge deformation monitoring device according to claim 2, characterized in that: The connecting sleeve (124) is threadedly connected to the connecting shaft (122), and the threads on the two connecting shafts (122) are in opposite directions.

4. The bridge deformation monitoring device according to claim 2, characterized in that: The connecting sleeve (124) is slidably sleeved on the outside of the connecting shaft (122). A locking screw (4) is threaded onto the connecting sleeve (124). The locking screw (4) passes through the connecting sleeve (124) and abuts against the connecting shaft (122).

5. A bridge deformation monitoring device according to claim 4, characterized in that: The connecting shaft (122) has a mating plane (51) along its axial direction, and the end of the locking screw (4) is provided with a friction pad (41), which abuts against the mating plane (51).

6. A bridge deformation monitoring device according to claim 5, characterized in that: A limiting groove (52) is provided on the connecting shaft (122) along its axial direction, and a limiting block (53) is provided on the connecting sleeve (124), and the limiting block (53) slides in cooperation with the limiting groove (52).

7. A bridge deformation monitoring device according to claim 1, characterized in that: One detection ring (21) is provided at each end of the telescopic measuring rod (12), and the gap between the inner ring of one detection ring (21) and the telescopic measuring rod (12) is greater than the gap between the inner ring of the other detection ring (21) and the telescopic measuring rod (12).

8. A bridge deformation monitoring device according to claim 1, characterized in that: The elastic connector (22) is located on the side of the detection ring (21) body close to the support plate (11). The elastic connector (22) is a spring or an elastic rod. The axis of the elastic connector (22) is parallel to the axis of the detection ring (21).

9. A bridge deformation monitoring device according to claim 1, characterized in that: The misalignment sensor (23) is set on the outer ring of the detection ring (21), and the end of the misalignment sensor (23) away from the detection ring (21) is tilted away from the center of the detection ring (21).

10. A bridge deformation monitoring device according to claim 1, characterized in that: Both of the two trays (11) are provided with a horizontal support part (112) on one side close to each other. The support part (112) is located near the bottom of the tray (11), and the mounting plate (31) is provided on the support part (112).

Images