Bridge expansion joint capable of monitoring displacement amount

Abstract

The utility model relates to a kind of bridge expansion joint of displacement amount can be monitored, monitoring component is equipped between two beam bodies, monitoring component includes the piston cylinder A along vertical direction and the piston cylinder B along bridge horizontal axial direction, piston cylinder A and piston cylinder B respectively are equipped with piston in each, the port of piston cylinder B is connected with the downside of piston cylinder A, piston cylinder A top is equipped with air vent, the piston in piston cylinder B is connected with piston rod, piston cylinder A and piston cylinder B are connected with the beam body of one side, piston rod is connected with the beam body of another side, the internal space of mutual communication between piston cylinder A and piston cylinder B is filled with liquid, the inside diameter of piston cylinder A and piston cylinder B is equivalent, monitoring component further includes liquid level sensor, microprocessor and wireless sending module, liquid level sensor is arranged in the bottom of piston cylinder A inner chamber, and wireless sending module is connected with the data between liquid level sensor through microprocessor.The utility model has the function of real-time monitoring the displacement of beam body in bridge axial direction.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint technology, specifically to a bridge expansion joint that can monitor displacement. Background Technology

[0002] To accommodate bridge deck deformation, bridge expansion joints are typically installed between the ends of two beams, between a beam end and an abutment, or at the hinged joints of the bridge. These expansion joints must be able to expand and contract freely in both directions parallel and perpendicular to the bridge axis, ensuring robustness and reliability. Traditional bridge expansion joints lack the ability to monitor beam displacement, relying instead on visual inspection by specialized personnel. This approach is inefficient, failing to detect even slight displacement changes and consuming significant manpower. Utility Model Content

[0003] The purpose of this invention is to provide a bridge expansion joint that can monitor displacement, and has the function of real-time monitoring of the displacement of the beam in the axial direction of the bridge.

[0004] The technical solution of this utility model is as follows:

[0005] A bridge expansion joint capable of monitoring displacement includes beams, toothed plates, channel steel, rubber water-blocking strips, and a monitoring component. Each of the two beams has a toothed plate at its top and a channel steel on its opposite sides. A rubber water-blocking strip is installed between the two channel steels. A monitoring component is located below the rubber water-blocking strip between the two beams. The monitoring component includes a piston cylinder A along the vertical direction and a piston cylinder B along the horizontal axis of the bridge. A piston is slidably connected inside each of piston cylinders A and B. The port of piston cylinder B is connected to the lower side of piston cylinder A. The piston cylinder A has a vent at its top. The piston inside the piston cylinder B is connected to a piston rod. The piston cylinder A and piston cylinder B are connected to a beam on one side, and the piston rod is connected to a beam on the other side. The internal space between the piston cylinders A and B is filled with liquid. The inner diameters of the piston cylinders A and B are similar. The monitoring component also includes a liquid level sensor, a microprocessor, and a wireless transmission module. The liquid level sensor is located at the bottom of the inner cavity of the piston cylinder A, and the wireless transmission module is connected to the liquid level sensor via the microprocessor.

[0006] Preferably, the monitoring component further includes a base plate, the end of which is connected to the beam, the top of which is provided with piston cylinder A and piston cylinder B, and the bottom of which is provided with a microprocessor and a wireless transmission module.

[0007] Preferably, the monitoring component further includes a battery, which is located at the bottom of the base plate, and the liquid level sensor, microprocessor and wireless transmission module are each electrically connected to the battery.

[0008] Preferably, the side wall of the beam is provided with a mounting groove, the end of the base plate is inserted into the mounting groove, the mounting groove and the base plate are respectively provided with corresponding screw holes, and the connection between the mounting groove and the base plate is fixed by screwing connecting screws into the overlapping screw holes.

[0009] Preferably, a fixed seat is provided on the side of the beam near the piston rod, and a movable block is movably connected to the fixed seat. The movable block moves relative to the fixed seat in a plane perpendicular to the horizontal axis of the bridge, and the end of the piston rod away from the piston is connected to the movable block.

[0010] Preferably, the fixed base includes a circular movable cavity and a circular opening leading to the movable cavity. The plane of the movable cavity is perpendicular to the axial direction of the bridge, and the circular opening points towards the piston rod. The movable block includes circular plates located on both sides and a connecting block located between the two circular plates. The circular plate on one side is connected to the piston rod, while the circular plate on the other side slides within the movable cavity. The diameter of the movable cavity is greater than the diameter of the circular plate, and the thickness of the movable cavity is approximately equal to the thickness of the circular plate. The diameter of the circular plate is greater than the diameter of the circular opening, and the size of the connecting block is smaller than the size of the circular opening.

[0011] Preferably, the air exchange port is equipped with a filter head.

[0012] Preferably, the inner wall of the piston cylinder A is provided with a pair of symmetrical slide rails along the length direction, and the outer wall of the piston of the piston cylinder A is provided with a slide groove that is slidably connected to the slide rails.

[0013] Preferably, the piston cylinder A has a blocking ring along the circumference below the air exchange port in its inner cavity.

[0014] The beneficial technical effects of this utility model are as follows:

[0015] By using piston cylinder A, piston cylinder B, piston, piston rod, and liquid level sensor in combination, the displacement of the beam in the axial direction of the bridge is measured. The liquid level sensor, microprocessor, and wireless transmission module work together to transmit the measurement data in real time, which is then received by a receiving device equipped with a corresponding wireless receiving module, achieving real-time monitoring. Piston cylinders A and B have similar inner diameters and are interconnected, their internal spaces filled with liquid. When the beam undergoes displacement in the axial direction of the bridge, the activated piston rod moves the connected piston within piston cylinder B. This changes the amount of liquid in piston cylinder B, which in turn changes the amount of liquid in piston cylinder A. The horizontal displacement of the piston in piston cylinder B is equivalent to the rise and fall of the liquid level in piston cylinder A. The change in the height of the liquid level in piston cylinder A is measured by the liquid level sensor to determine the magnitude of the beam's displacement in the axial direction of the bridge. Attached Figure Description

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0017] Appendix Figure 1 This is a front-view cross-sectional view of the present invention.

[0018] Appendix Figure 2 This is a top view of the present invention with the toothed plate, channel steel, and rubber water-blocking strip removed.

[0019] Appendix Figure 3 for Figure 1 Enlarged view of part A.

[0020] Appendix Figure 4 This is a schematic diagram of the fixed base.

[0021] Appendix Figure 5 This is a cross-sectional view of piston cylinder A.

[0022] In the diagram: 1-Beam, 2-Toothed plate, 3-Channel steel, 4-Rubber water baffle, 5-Monitoring component, 6-Piston cylinder A, 7-Piston cylinder B, 8-Piston, 9-Ventilation port, 10-Piston rod, 11-Level sensor, 12-Microprocessor, 13-Wireless transmission module, 14-Base plate, 15-Battery, 16-Mounting groove, 17-Connecting screw, 18-Fixed seat, 19-Moving block, 20-Moving cavity, 21-Circular opening, 22-Filter head, 23-Slide rail, 24-Slide groove, 25-Blocking ring. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] Example:

[0025] like Figures 1 to 5As shown, this embodiment provides a bridge expansion joint capable of monitoring displacement, including a beam 1, a toothed plate 2, a channel steel 3, a rubber water-blocking strip 4, and a monitoring component 5. The top of each of the two beams 1 is provided with a toothed plate 2, and the opposite surfaces of the two beams 1 are each provided with a channel steel 3. A rubber water-blocking strip 4 is installed between the two channel steels 3. A monitoring component 5 is located below the rubber water-blocking strip 4 between the two beams 1. The monitoring component 5 includes a piston cylinder A6 along the vertical direction and a piston cylinder B7 along the horizontal axis of the bridge. A piston 8 is slidably connected inside each of the piston cylinders A6 and B7. The port of the piston cylinder B7 is connected to the lower side of the piston cylinder A6. The piston cylinder A6 is connected to the piston cylinder B7, which has a vent 9 at the top. The piston 8 inside the piston cylinder B7 is connected to the piston rod 10. The piston cylinders A6 and B7 are connected to the beam 1 on one side, and the piston rod 10 is connected to the beam 1 on the other side. The internal space between the piston cylinders A6 and B7 is filled with liquid. The inner diameters of the piston cylinders A6 and B7 are similar. The monitoring component 5 also includes a liquid level sensor 11, a microprocessor 12, and a wireless transmission module 13. The liquid level sensor 11 is located at the bottom of the inner cavity of the piston cylinder A6. The wireless transmission module 13 is connected to the liquid level sensor 11 via the microprocessor 12.

[0026] By using piston cylinder A6, piston cylinder B7, piston 8, piston rod 10, and liquid level sensor 11 together, the displacement of beam 1 in the axial direction of the bridge is measured. By using liquid level sensor 11, microprocessor 12, and wireless transmission module 13 together, the measurement data of liquid level sensor 11 is transmitted outward in real time, and the data is received by a receiving device equipped with a corresponding wireless receiving module, realizing the effect of real-time monitoring. The internal space between piston cylinder A6 and piston cylinder B7 is filled with liquid. When the displacement of beam 1 in the axial direction of the bridge changes, the piston rod 10 is pulled and drives the connected piston 8 to move in piston cylinder B7. By changing the liquid volume in piston cylinder B7, the liquid volume in piston cylinder A6 changes. The inner diameters of piston cylinder A6 and piston cylinder B7 are similar. The magnitude of the horizontal displacement of piston 8 in piston cylinder B7 is similar to the magnitude of the rise and fall of the liquid level in piston cylinder A6. Thus, the displacement of beam 1 in the axial direction of the bridge is obtained by measuring the height change of the liquid level in piston cylinder A6 by liquid level sensor 11. The vent 9 is used to ensure that the air above the liquid surface in the piston cylinder A6 is at normal pressure, and the piston 8 inside the piston cylinder A6 is used to prevent the liquid from coming into direct contact with the air.

[0027] Furthermore, the monitoring component 5 also includes a base plate 14, the end of which is connected to the beam 1. The top of the base plate 14 is provided with piston cylinder A6 and piston cylinder B7, and the bottom of the base plate 14 is provided with microprocessor 12 and wireless transmission module 13.

[0028] The base plate 14 provides a stable mounting surface for each component of the monitoring assembly 5.

[0029] Furthermore, the monitoring component 5 also includes a battery 15, which is located at the bottom of the base plate 14. The liquid level sensor 11, the microprocessor 12, and the wireless transmission module 13 are each electrically connected to the battery 15.

[0030] Battery 15 provides the power required for the operation of the level sensor 11, microprocessor 12, and wireless transmission module 13.

[0031] Furthermore, the side wall of the beam 1 is provided with a mounting groove 16, and the end of the base plate 14 is inserted into the mounting groove 16. The mounting groove 16 and the base plate 14 are respectively provided with corresponding screw holes. The connection between the mounting groove 16 and the base plate 14 is fixed by screwing in the overlapping screw holes.

[0032] The connecting screw 17 is easy to operate and provides a secure connection. The mounting slot 16 facilitates the installation and removal of the base plate 14 onto the beam 1.

[0033] Furthermore, a fixed seat 18 is provided on the side of the beam 1 near the piston rod 10, and a movable block 19 is movably connected to the fixed seat 18. The movable block 19 moves relative to the fixed seat 18 in a plane perpendicular to the horizontal axis of the bridge, and the end of the piston rod 10 away from the piston 8 is connected to the movable block 19.

[0034] By using the fixed seat 18 and the movable block 19 together, the impact of bridge displacement in a plane perpendicular to the bridge's horizontal axis on the connection of the piston rod 10 is reduced, thus lowering the risk of damage to the piston rod 10. When the bridge experiences displacement in a plane perpendicular to its horizontal axis, the fixed seat 18 moves relative to the movable block 19, but the movable block 19 does not cause the connected piston rod 10 to move.

[0035] Furthermore, the fixed base 18 includes a circular movable cavity 20 and a circular opening 21 leading to the movable cavity 20. The plane of the movable cavity 20 is perpendicular to the axial direction of the bridge. The circular opening 21 points towards the piston rod 10. The movable block 19 includes circular plates located on both sides and a connecting block located between the two circular plates. One circular plate is connected to the piston rod 10, while the other circular plate slides within the movable cavity 20. The diameter of the movable cavity 20 is greater than the diameter of the circular plate. The thickness of the movable cavity 20 is comparable to the thickness of the circular plate. The diameter of the circular plate is greater than the diameter of the circular opening 21. The size of the connecting block is smaller than the size of the circular opening 21.

[0036] The movable cavity 20 provides space for the inner circular plate to move, and the circular opening 21 provides space for the connecting block to move. The outer circular plate is used to cover the circular opening 21, reducing the probability of external impurities entering the movable cavity 20 of the fixed seat 18. Specifically, in this embodiment, a connecting plate is provided on the outer end of the piston rod 10, and corresponding threaded holes are provided between the connecting plate and the outer circular plate. The connection between the piston rod 10 and the movable block 19 is fixed by screwing the connecting screw 17 into the overlapping threaded holes.

[0037] Furthermore, a filter head 22 is provided on the air exchange port 9.

[0038] Impurities are blocked by the filter head 22, reducing the probability of external impurities entering the piston cylinder A6. Specifically, in this embodiment, a buckle is provided on the outside of the piston cylinder A6 at the air exchange port 9, and the filter head 22 is provided with a corresponding slot for the buckle. The filter head 22 is installed at the air exchange port 9 by the combination of the buckle and the slot.

[0039] Furthermore, a pair of symmetrical slide rails 23 along the length direction are provided on the inner wall of the piston cylinder A6, and a slide groove 24 that is slidably connected to the slide rails 23 is provided on the outer wall of the piston 8 of the piston cylinder A6.

[0040] By using the slide rail 23 and the slide groove 24 together, the movement trajectory of the piston 8 inside the piston cylinder A6 is restricted, thereby improving the stability of the piston 8 sliding inside the piston cylinder A6.

[0041] Furthermore, a blocking ring 25 is provided around the circumference of the inner cavity of piston cylinder A6 below the air exchange port 9.

[0042] The blocking ring 25 prevents the piston 8 from rising to the vent 9 and causing liquid to leak out from the vent 9.

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

[0044] Mounting slots 16 and fixed seats 18 are installed at the relative positions of the two beams 1, and then the base plate 14 is installed in the mounting slots 16. Next, the piston rod 10 is connected to the movable block 19 on the fixed seat 18. Then, the channel steel 3, the rubber water-blocking belt 4, and the toothed plate 2 are installed in sequence. Finally, the liquid level sensor 11, the microprocessor 12, and the wireless transmission module 13 are activated. When the beam 1 is displaced in the axial direction of the bridge, the beam 1 moves the connected piston rod 10 through the fixed seat 18 and the movable block 19. The moving piston rod 10 moves the connected piston 8, which in turn causes the liquid volume in the piston cylinder A6 and piston cylinder B7 to change accordingly. The liquid level sensor 11 obtains the data on the change in the liquid level in piston cylinder A6, and the data is transmitted to the corresponding receiving device through the microprocessor 12 and the wireless transmission module 13.

[0045] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A bridge expansion joint capable of monitoring displacement, comprising beams, toothed plates, channel steel, rubber water-blocking strips, and monitoring components, wherein each of the two beams has a toothed plate on its top, each of the two beams has a channel steel on its opposite surfaces, and a rubber water-blocking strip is installed between the two channel steels, characterized in that: A monitoring assembly is installed between the two beams below the rubber water-blocking strip. The monitoring assembly includes a piston cylinder A along the vertical direction and a piston cylinder B along the horizontal axis of the bridge. A piston is slidably connected inside each of the piston cylinders A and B. The port of the piston cylinder B is connected to the lower side of the piston cylinder A. A vent is provided at the top of the piston cylinder A. A piston rod is connected to the piston inside the piston cylinder B. The piston cylinders A and B are connected to one side of the beam, and the piston rod is connected to the other side of the beam. The internal space between the piston cylinders A and B is filled with liquid. The inner diameters of the piston cylinders A and B are similar. The monitoring assembly also includes a liquid level sensor, a microprocessor, and a wireless transmission module. The liquid level sensor is located at the bottom of the inner cavity of the piston cylinder A, and the wireless transmission module is connected to the liquid level sensor via the microprocessor.

2. The bridge expansion joint capable of monitoring displacement according to claim 1, characterized in that: The monitoring component also includes a base plate, the end of which is connected to the beam. The top of the base plate is provided with piston cylinder A and piston cylinder B, and the bottom of the base plate is provided with a microprocessor and a wireless transmission module.

3. A bridge expansion joint capable of monitoring displacement according to claim 2, characterized in that: The monitoring component also includes a battery located at the bottom of the base plate, and the level sensor, microprocessor, and wireless transmission module are each electrically connected to the battery.

4. A bridge expansion joint capable of monitoring displacement according to claim 2, characterized in that: The beam has a mounting groove on its side wall. The end of the base plate is inserted into the mounting groove. The mounting groove and the base plate are respectively provided with corresponding screw holes. The connection between the mounting groove and the base plate is fixed by screwing connecting screws into the overlapping screw holes.

5. A bridge expansion joint capable of monitoring displacement according to claim 1, characterized in that: A fixed seat is provided on the side of the beam near the piston rod, and a movable block is movably connected to the fixed seat. The movable block moves relative to the fixed seat in a plane perpendicular to the horizontal axis of the bridge. The end of the piston rod away from the piston is connected to the movable block.

6. A bridge expansion joint capable of monitoring displacement according to claim 5, characterized in that: The fixed base includes a circular movable cavity and a circular opening leading to the movable cavity. The plane of the movable cavity is perpendicular to the axial direction of the bridge. The circular opening points towards the piston rod. The movable block includes circular plates located on both sides and a connecting block located between the two circular plates. One of the circular plates is connected to the piston rod, while the other circular plate slides within the movable cavity. The diameter of the movable cavity is greater than the diameter of the circular plate, and the thickness of the movable cavity is approximately equal to the thickness of the circular plate. The diameter of the circular plate is greater than the diameter of the circular opening, and the size of the connecting block is smaller than the size of the circular opening.

7. A bridge expansion joint capable of monitoring displacement according to claim 1, characterized in that: The air exchange port is equipped with a filter head.

8. A bridge expansion joint capable of monitoring displacement according to claim 1, characterized in that: The inner wall of the piston cylinder A is provided with a pair of symmetrical slide rails along the length direction, and the outer wall of the piston of the piston cylinder A is provided with a slide groove that is slidably connected to the slide rails.

9. A bridge expansion joint capable of monitoring displacement according to claim 1, characterized in that: The piston cylinder A has a blocking ring along its circumference below the air exchange port in its inner cavity.

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