Adjustable bridge expansion joint protection device

By introducing a buffer and disassembly mechanism into the bridge expansion joint protection device, the problem of easy damage to the protective plate under compression is solved, realizing the buffering and shock absorption and quick replacement of the protective plate, thereby improving the service life of the bridge and driving safety.

CN224016128UActive Publication Date: 2026-03-20HEILONGJIANG SIYUAN ENGINEERING TECHNOLOGY GROUP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-17
Publication Date
2026-03-20

AI Technical Summary

Technical Problem

The protective plates of existing bridge expansion joint protection devices lack cushioning after being squeezed, leading to deformation and damage of the protective plates, shortening their service life, and affecting the stability and safety of the bridge structure.

Method used

An adjustable bridge expansion joint protection device is adopted, which includes a protective plate, a buffer mechanism, a friction mechanism, and a disassembly mechanism. Through components such as springs, rubber plates, and connecting rods, the protective plate can be buffered and quickly disassembled, reducing the impact force on the bridge and improving installation efficiency.

Benefits of technology

It extends the service life of protective panels and bridge expansion joints, improves driving comfort, reduces noise, lowers maintenance costs, and ensures smooth and safe roads.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of bridge expansion joint protection, and discloses an adjustable bridge expansion joint protection device which comprises a protection plate, a plurality of water flowing grooves are formed in the top of the protection plate, the periphery of the protection plate is connected with a dismounting mechanism in a sliding mode, and the interior of the protection plate is connected with two buffering mechanisms in a sliding mode. The bottom of the protection plate is rotatably connected with two friction mechanisms, the bottom of the protection plate is fixedly connected with two telescopic rods, the buffer mechanism comprises a fixed block, the fixed block is slidably connected into the protection plate, the bottom of the fixed block is fixedly connected with a stabilizing rod, and the stabilizing rod is sleeved with a first spring. According to the utility model, the impact damage to the expansion joint and the bridge structure can be reduced, the service lives of the expansion joint and the bridge structure can be prolonged, the maintenance cost can be reduced, the driving comfort can be greatly improved, the bumping can be reduced, the driving safety can be guaranteed, the noise generated by vibration can be reduced, and a quieter traffic environment can be created.
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Description

TECHNICAL FIELD

[0001] The utility model relates to bridge expansion joint protection technical field especially adjustable bridge expansion joint protection device. BACKGROUND

[0002] Bridge expansion joint is mainly used to deal with the expansion deformation of bridge caused by temperature change, concrete shrinkage and creep, vehicle load impact, etc., can make the bridge freely expand in the length direction, avoid the damage caused by excessive stress in the structure, ensure the stability of bridge structure, also can ensure the smooth passing of vehicle, reduce the phenomenon of jumping, prolong the service life of bridge.

[0003] The adjustable bridge expansion joint protection device basic structure mainly has the protection plate and the water channel. The protection plate covers the expansion joint and plays a protection role, and the bottom is connected with the related component stable device. The water channel is opened at the top of the protection plate, can quickly drain the water on the bridge, avoid the erosion of expansion joint, ensure the stability of bridge structure, prolong the service life.

[0004] In the prior art, part of the expansion joint protection device in the process of using, if the expansion joint top protection plate is extruded, the impact force generated by the vehicle driving will directly act on the protection plate and the expansion joint. This is easy to cause the deformation and damage of the protection plate, shorten its service life, also will make the expansion joint bear excessive pressure, accelerate the wear and aging, affect the stability of bridge structure, increase the safety hidden danger, for this adjustable bridge expansion joint protection device is proposed to solve the above problems. Utility model content

[0005] In order to make up for the above shortage, the utility model provides adjustable bridge expansion joint protection device, aims at improving the problem that the protection plate is difficult to buffer after being extruded in prior art, then increasing the wear of protection plate and expansion joint, so as to reduce the service life.

[0006] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0007] Adjustable bridge expansion joint protection device, including protection plate, the top of protection plate is equipped with a plurality of water channels, the periphery of protection plate is slidably connected with dismounting mechanism, the inside of protection plate is slidably connected with two buffer mechanisms, the bottom of protection plate is rotatably connected with two friction mechanisms, the bottom of protection plate is fixedly connected with two expansion joints;

[0008] The buffering mechanism includes a fixed block, the fixed block is slidingly connected inside the protective plate, the bottom of the fixed block is fixedly connected with a stabilizing rod, the outside of the stabilizing rod is sleeved with a spring one, the outside of the stabilizing rod is slidingly connected with a sliding ring, the bottom of the stabilizing rod is fixedly connected with a supporting ring, the left side of the sliding ring is rotatably connected with a rotating rod, the other end of the rotating rod is rotatably connected to the left side of the supporting ring, and the bottoms of the two supporting rings are fixedly connected with rubber plates two;

[0009] As a further description of the above technical solution:

[0010] The dismounting mechanism includes a plurality of sealing gaskets, the outside of the sealing gaskets is fixedly connected around the inside of the protective plate, the inside of the sealing gasket is slidingly connected with a connecting rod, the top of the connecting rod is fixedly connected with a handle, and the outside of the connecting rod is sleeved with a spring two;

[0011] As a further description of the above technical solution:

[0012] The inside of the protective plate is fixedly connected with a clamping plate around, the outside of the connecting rod is fixedly connected with a cross pin, and the bottom of the protective plate is fixedly connected with a rubber plate one around;

[0013] As a further description of the above technical solution:

[0014] The bottom and left end of the rubber plate one are fixedly connected with a ground groove, and the outside of the cross pin is slidingly connected inside the clamping plate;

[0015] As a further description of the above technical solution:

[0016] The friction mechanism includes two engaging rods, the top of the engaging rods is rotatably connected to the bottom and left end of the protective plate, the other end of the engaging rod is rotatably connected with a pushing block, and the bottom of the pushing block is fixedly connected with a sliding block;

[0017] As a further description of the above technical solution:

[0018] The top of the rubber plate two is fixedly connected with two positioning blocks, the top of the positioning block is provided with a sliding groove, and the outside of the sliding block is slidingly connected inside the sliding groove;

[0019] As a further description of the above technical solution:

[0020] One end of the spring one is fixedly connected to one side of the sliding ring, and the other end of the spring one is fixedly connected to one side of the supporting ring;

[0021] As a further description of the above technical solution:

[0022] The bottom of the pushing block is in contact with the top of the positioning block, and the positioning block is shaped as an inverted triangle.

[0023] The utility model has the advantages of the following:

[0024] 1、The utility model discloses, can make the protective plate drive rubber board one to descend, when the protective plate is in the process of descending, can extrude the sliding ring and move, when the sliding ring is in the process of moving, can extrude the stable rod and contract, realize can reduce the impact damage to expansion joint and bridge structure, prolong the service life of both, reduce maintenance cost, can greatly improve the driving comfort, reduce the jolt, guarantee the driving safety, can also reduce the noise produced due to vibration, create more quiet traffic environment.

[0025] 2、The utility model discloses, through rotating the handle and rotating, when the handle is in the process of rotating, can drive the connecting rod and rotate, when the connecting rod is in the process of rotating, can drive the cross pin and rotate, realize can greatly improve the installation efficiency, let bridge be put into use as soon as possible, save time and cost, in the bridge operation stage, once the protective plate is damaged or needs to overhaul expansion joint, can be removed and replaced quickly, maximumly reduce the interference to traffic, guarantee the road smooth. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the three-dimensional schematic view of the adjustable bridge expansion joint protection device provided by the utility model;

[0027] Figure 2 It is the structural schematic view of the flow water channel of the adjustable bridge expansion joint protection device provided by the utility model;

[0028] Figure 3 It is the enlarged view of A in Figure 2

[0029] Figure 4 It is the structural schematic view of the protective plate of the adjustable bridge expansion joint protection device provided by the utility model;

[0030] Figure 5 It is the enlarged view of B in Figure 4

[0031] Figure 6 It is the structural schematic view of the pushing block of the adjustable bridge expansion joint protection device provided by the utility model.

[0032] LEGEND:

[0033] ​​1, the protective plate; 2, water channel; 3, rubber plate one; 4, buffer mechanism; 401, fixed block; 402, stabilizing bar; 403, spring one; 404, sliding ring; 405, support ring; 406, rotating rod; 407, rubber plate two; 5, friction mechanism; 501, push block; 502, sliding block; 503, positioning block; 504, sliding groove; 505, connecting rod; 6, dismounting mechanism; 601, sealing gasket; 602, connecting rod; 603, handle; 604, spring two; 605, clamping plate; 606, cross pin; 607, ground groove; 7, telescopic rod. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0035] Referring to Figures 1 to 3 An embodiment provided by the utility model: adjustable bridge expansion joint protection device, including the protective plate 1, the protective plate 1 is in the whole protection device and plays the basic load bearing and protection effect, the top of the protective plate 1 is provided with multiple water channels 2, and the water channels 2 are regularly distributed, which can quickly and effectively guide the bridge water to drain, and the periphery of the protective plate 1 is slidably connected with the dismounting mechanism 6, the dismounting mechanism 6 can quickly dismount the protective plate 1, the dismounting mechanism 6 includes multiple sealing gaskets 601, the outer parts of the multiple sealing gaskets 601 are fixedly connected to the periphery of the inside of the protective plate 1, the sealing gasket 601 can effectively prevent foreign matters from entering the expansion joint area, the inside of the sealing gasket 601 is slidably connected with the connecting rod 602, the connecting rod 602 can move in the inside of the sealing gasket 601, the top of the connecting rod 602 is fixedly connected with the handle 603, and the connecting rod 602 can be rotated by rotating the handle 603.

[0036] The outer part of the connecting rod 602 is sleeved with spring two 604, which has elastic reset function. The inner part of the protection plate 1 is fixedly connected with clamping plates 605 around. The clamping plates 605 can play a limiting role. The outer part of the connecting rod 602 is fixedly connected with a cross pin 606, which can play a limiting role through the cross pin 606. The bottom of the protection plate 1 is fixedly connected with rubber plates one 3 at the front and rear ends. The rubber plates one 3 can absorb the potential energy brought by the vehicle. The bottom of the rubber plates one 3 is fixedly connected with ground grooves 607 at the left and right ends. The ground grooves 607 are holes opened on the ground. The outer part of the cross pin 606 is slidably connected in the inner part of the clamping plate 605. By rotating the cross pin 606, the protection plate 1 can be separated from the ground. The bottom of the protection plate 1 is fixedly connected with two telescopic rods 7. When the protection plate 1 is extruded, the telescopic rods 7 can be shrunk.

[0037] Referring to Figure 4 and Figure 5 , the inner part of the protection plate 1 is slidably connected with two buffer mechanisms 4. The buffer mechanisms 4 can prolong the service life of the protection plate 1 and prevent the expansion joint from being damaged. The buffer mechanism 4 comprises a fixed block 401 slidably connected in the inner part of the protection plate 1. The fixed block 401 prevents falling off. The bottom of the fixed block 401 is fixedly connected with a stabilizing rod 402, which can play a supporting role. The outer part of the stabilizing rod 402 is sleeved with a spring one 403, which has good elastic potential energy storage and release capacity. When subjected to external force, it can effectively buffer the impact. The outer part of the stabilizing rod 402 is slidably connected with a sliding ring 404, which can be displaced when subjected to extrusion of the protection plate 1. One end of the spring one 403 is fixedly connected to one side of the sliding ring 404. The sliding ring 404 can extrude the spring one 403. The bottom of the stabilizing rod 402 is fixedly connected with a supporting ring 405, which can play a supporting effect. The other end of the spring one 403 is fixedly connected to one side of the supporting ring 405. The supporting ring 405 can achieve the effect of absorbing potential energy for the spring one 403. The left side of the sliding ring 404 is rotatably connected with a rotating rod 406. The other end of the rotating rod 406 is rotatably connected to the left side of the supporting ring 405. When the sliding ring 404 is contracted, the rotating rod 406 can be contracted. The bottoms of the two supporting rings 405 are fixedly connected with rubber plates two 407, which can block external objects from entering the expansion joint.

[0038] Referring to Figure 4 and Figure 6The bottom of the protective plate 1 is rotationally connected with two friction mechanisms 5, the friction mechanism 5 can increase the friction, the friction mechanism 5 comprises two connecting rods 505, the connecting rod 505 can transmit kinetic energy, the top of the two connecting rods 505 is rotationally connected with the bottom of the protective plate 1 left and right ends, when the protective plate 1 is extruded, it can be transmitted to the connecting rod 505, the other end of the connecting rod 505 is rotationally connected with the push block 501, so that the connecting rod 505 pushes the push block 501 to move, the bottom of the push block 501 is fixedly connected with the sliding block 502, when the push block 501 moves, the sliding block 502 can be driven to move, the top of the rubber plate two 407 is fixedly connected with two positioning blocks 503, the positioning block 503 plays a limiting role, the positioning block 503 is in the shape of an inverted triangle, the shape of the inverted triangle can increase the friction, the bottom of the push block 501 is in contact with the top of the positioning block 503, the push block 501 can move at the bottom of the positioning block 503, so that the movement between the two is difficult, so that the protective plate 1 has power in the process of descending, the top of the positioning block 503 is provided with a sliding groove 504, the outer sliding block 502 is slidingly connected in the sliding groove 504, the sliding groove 504 can limit the movement path of the sliding block 502.

[0039] Working principle: when the vehicle rolls to the surface of the protective plate 1, the protective plate 1 drives the rubber plate one 3 to descend, when the protective plate 1 descends, the sliding ring 404 can be extruded to move, when the sliding ring 404 moves, the stabilizing rod 402 can be extruded to shrink, so that the stabilizing rod 402 is deformed, when the sliding ring 404 moves, the rotating rod 406 can be extruded to shrink, so as to protect the protective plate 1, and prevent the vehicle from jolting, at the same time, when the protective plate 1 is extruded by the vehicle, the connecting rod 505 can be driven to move, when the connecting rod 505 moves, the push block 501 can be pushed to move, so that the push block 501 drives the sliding block 502 to displace, the sliding block 502 can slide in the sliding groove 504 of the positioning block 503, so as to increase the friction between the push block 501 and the positioning block 503, so as to achieve the effect of secondary unloading, when the protective plate 1 descends, the protective plate 1 can be rebounded to the original position through the spring one 403 and the telescopic rod 7, and then the rubber plate two 407 can prevent water from entering the expansion joint, and can prevent the expansion joint from being damaged.

[0040] When the protective plate 1 needs to be disassembled, first, the handle 603 is rotated, the connecting rod 602 is rotated when the handle 603 rotates, the cross pin 606 is rotated when the connecting rod 602 rotates, and the cross pin 606 is slid out of the inside of the clamping plate 605 through the spring two 604 when the cross pin 606 rotates, so that the protective plate 1 is disassembled, and the installation efficiency is greatly improved. The sealing gasket 601 can prevent water from entering the inside of the protective plate 1, the water channel 2 opened at the top of the protective plate 1 can prevent water accumulation, and the water in the expansion joint can be prevented from entering.

[0041] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. An adjustable bridge expansion joint protection device, comprising a protective plate (1), characterized in that: The top of the protective plate (1) is provided with multiple water channels (2), the four sides of the protective plate (1) are slidably connected with disassembly mechanisms (6), the inside of the protective plate (1) is slidably connected with two buffer mechanisms (4), the bottom of the protective plate (1) is rotatably connected with two friction mechanisms (5), and the bottom of the protective plate (1) is fixedly connected with two telescopic rods (7). The buffer mechanism (4) includes a fixed block (401), which is slidably connected inside the protective plate (1). A stabilizing rod (402) is fixedly connected to the bottom of the fixed block (401). A spring (403) is sleeved on the outside of the stabilizing rod (402). A sliding ring (404) is slidably connected to the outside of the stabilizing rod (402). A support ring (405) is fixedly connected to the bottom of the stabilizing rod (402). A rotating rod (406) is rotatably connected to the left side of the sliding ring (404). The other end of the rotating rod (406) is rotatably connected to the left side of the support ring (405). Rubber plates (407) are fixedly connected to the bottom of the two support rings (405).

2. The adjustable bridge expansion joint protection device according to claim 1, characterized in that: The disassembly mechanism (6) includes multiple sealing gaskets (601), the exterior of which is fixedly connected to the interior periphery of the protective plate (1). A connecting rod (602) is slidably connected inside the sealing gasket (601), a handle (603) is fixedly connected to the top of the connecting rod (602), and a spring (604) is sleeved on the exterior of the connecting rod (602).

3. The adjustable bridge expansion joint protection device according to claim 2, characterized in that: The protective plate (1) is fixedly connected to a clamping plate (605) on all four sides inside, and a cross pin (606) is fixedly connected to the outside of the connecting rod (602). A rubber plate (3) is fixedly connected to the front and rear ends of the bottom of the protective plate (1).

4. The adjustable bridge expansion joint protection device according to claim 3, characterized in that: The bottom left and right ends of the rubber plate (3) are fixedly connected to the ground groove (607), and the outside of the cross pin (606) is slidably connected to the inside of the card plate (605).

5. The adjustable bridge expansion joint protection device according to claim 1, characterized in that: The friction mechanism (5) includes two connecting rods (505). The tops of the two connecting rods (505) are rotatably connected to the bottom left and right ends of the protective plate (1), respectively. The other end of the connecting rod (505) is rotatably connected to a push block (501), and the bottom of the push block (501) is fixedly connected to a slider (502).

6. The adjustable bridge expansion joint protection device according to claim 5, characterized in that: Two positioning blocks (503) are fixedly connected to the top of the second rubber plate (407). The top of the positioning block (503) is provided with a groove (504), and the outside of the slider (502) is slidably connected to the inside of the groove (504).

7. The adjustable bridge expansion joint protection device according to claim 1, characterized in that: One end of the spring (403) is fixedly connected to one side of the sliding ring (404), and the other end of the spring (403) is fixedly connected to one side of the support ring (405).

8. The adjustable bridge expansion joint protection device according to claim 6, characterized in that: The bottom of the push block (501) is in contact with the top of the positioning block (503), and the positioning block (503) is in the shape of an inverted triangle.