Adjustable anti-falling beam device for highway bridge

Abstract

This utility model relates to the technical field of bridge connection components and discloses an adjustable anti-falling beam device for highway bridges, including a first mounting block. A lower support plate is fixedly connected to the lower surface of the first mounting block, and a fixed shaft is fixedly connected to the middle of the upper surface of the lower support plate. The top end of the fixed shaft is fixedly connected to the top of the inner surface of the first mounting block. This utility model, by setting up a worm gear, worm, driving rod, trapezoidal block, and triangular block, allows the worm gear to rotate around the fixed shaft when the operator rotates the worm. Simultaneously, the driving rod and trapezoidal blocks move with the rotation of the worm gear, causing the four trapezoidal blocks to move in opposite directions. As the trapezoidal blocks move, the contact position between the trapezoidal blocks and the triangular blocks changes, thus changing the distance between the triangular block and the first mounting block, achieving the function of adjusting the overall height of the first mounting block.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge connection components, and more specifically, to an adjustable anti-falling beam device for highway bridges. Background Technology

[0002] Anti-falling beam devices are safety protection structures in bridge engineering, used to prevent the beam from detaching from the supports and collapsing during earthquakes or accidental impacts. They are usually composed of high-strength steel components or composite dampers, and constrain the relative displacement between the beam and the pier through anchoring, limiting or energy dissipation mechanisms. The design must take into account both structural stiffness and buffer performance, and adapt to different bridge types and span requirements. This device can effectively improve the seismic performance and overall stability of bridges, and is especially suitable for bridge construction in earthquake-prone areas.

[0003] A search revealed a bridge anti-falling beam device and an anti-falling beam support with publication number CN210216131U. The background section addressed the problem that existing bridge supports are numerous and modifying them one by one would be a huge undertaking, and that the displacement of the beam caused by vehicles passing on the bridge would lead to continuous friction between the upper and lower support plates and the concrete structure, affecting the service life of the supports. The solution then addressed these problems by setting up pre-embedded plates for the beam body, pre-embedded plates for the piers, and cable assemblies.

[0004] However, in the above scheme, the spacing between the upper and lower support plates is not adjustable, which requires construction workers to customize it according to the spacing between the beam and the pier. This greatly increases the production cost of the anti-fall beam support and is not conducive to the rapid construction of the bridge. Therefore, it needs to be improved. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides an adjustable anti-fall beam device for highway bridges, which has the advantage of adjustable spacing between the upper and lower support plates.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable anti-falling beam device for highway bridges, comprising a first mounting block, a lower support plate fixedly connected to the lower surface of the first mounting block, a fixed shaft fixedly connected to the middle of the upper surface of the lower support plate, the top end of the fixed shaft fixedly connected to the top of the inner surface of the first mounting block, a worm gear movably sleeved on the outer surface of the fixed shaft and located inside the first mounting block, a worm movably mounted on the left side of the inner surface of the first mounting block, the rear end of the worm penetrating the first mounting block and extending to the rear side of the first mounting block, a driving rod movably connected to the inner surface of the worm gear, four trapezoidal blocks fixedly connected to the upper surface of the driving rod, the outer surfaces of the four trapezoidal blocks movably connected to the inner surface of the top of the first mounting block, and triangular blocks movably connected to the upper surfaces of the four trapezoidal blocks, with a connecting plate fixedly connected to the upper surface of the triangular blocks.

[0007] As a preferred embodiment of this utility model, a spring is fixedly connected to the upper surface of the first mounting block, the top end of the spring is fixedly connected to the lower surface of the connecting plate, a limiting plate is fixedly connected to the outer surface of the triangular block, and the upper surface of the limiting plate is fixedly connected to the lower surface of the connecting plate.

[0008] As a preferred embodiment of this utility model, a second mounting block is fixedly connected to the upper surface of the connecting plate, a grooved plate is fixedly connected to the upper surface of the second mounting block, an annular closed cable is movably connected to the inner surface of the grooved plate, and the outer surface of the annular closed cable is movably connected to the inner surface of the lower support plate.

[0009] As a preferred technical solution of this utility model, a pressure block is movably connected to the upper surface of the groove plate, an upper support plate is fixedly connected to the upper surface of the pressure block, clamping blocks are movably connected to the inner surfaces of both sides of the pressure block, and an L-shaped block located outside the pressure block is fixedly connected to the lower surface of the clamping block. There are two L-shaped blocks, and the other ends of the two L-shaped blocks penetrate through the second mounting block and extend into the interior of the second mounting block.

[0010] As a preferred embodiment of this utility model, limit blocks are fixedly connected to the outer surfaces of the front and rear sides of the two L-shaped blocks, and the outer surfaces of the two L-shaped blocks are movably connected to the lower surface of the groove plate.

[0011] As a preferred technical solution of this utility model, a double-threaded rod is movably installed on the rear surface of the second mounting block. The front end of the double-threaded rod passes through the second mounting block and the connecting plate in sequence and extends to the front surface of the second mounting block. The front and rear sides of the outer surface of the double-threaded rod are threaded with movable plates. There are two movable plates. The lower surfaces of the two movable plates are hinged with connecting rods. There are four connecting rods. The four connecting rods are arranged in pairs. The other end of each pair of connecting rods is hinged to the lower surface of two L-shaped blocks respectively.

[0012] As a preferred technical solution of this utility model, a limiting rod located on the left side of the double-threaded rod is fixedly sleeved on the front surface of the second mounting block. The rear end of the limiting rod passes through the second mounting block, the moving plate and the connecting plate in sequence and extends to the rear surface of the second mounting block. The outer surface of the limiting rod and the inner surface of the moving plate are movably sleeved.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention utilizes a worm gear, worm, driving rod, trapezoidal block, and triangular block. When the operator rotates the worm, the worm gear is driven by the outer surface of the worm, causing it to rotate around a fixed axis. Simultaneously, the driving rod and trapezoidal block move with the rotation of the worm gear, resulting in the four trapezoidal blocks moving in opposite directions. As the trapezoidal blocks move, the contact position between them and the triangular block changes, thus altering the distance between the triangular block and the first mounting block. This allows for adjustment of the distance between the lower and upper support plates. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the rear side of the present invention;

[0017] Figure 3 This is a cross-sectional view of the side of the present invention;

[0018] Figure 4 This is a cross-sectional view of the No. 2 mounting block of this utility model;

[0019] Figure 5 This is a cross-sectional view of the No. 1 mounting block of this utility model.

[0020] In the diagram: 1. Mounting block 1; 2. Lower support plate; 3. Fixed shaft; 4. Worm gear; 5. Worm; 6. Driving rod; 7. Trapezoidal block; 8. Triangular block; 9. Connecting plate; 10. Spring; 11. Limiting plate; 12. Mounting block 2; 13. Groove plate; 14. Annular closed cable; 15. Pressure block; 16. Upper support plate; 17. L-shaped block; 18. Clamping block; 19. Limiting block; 20. Double-threaded rod; 21. Moving plate; 22. Connecting rod; 23. Limiting rod. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 5 As shown, this utility model provides an adjustable anti-falling beam device for highway bridges, including a first mounting block 1. A lower support plate 2 is fixedly connected to the lower surface of the first mounting block 1. A fixed shaft 3 is fixedly connected to the middle of the upper surface of the lower support plate 2. The top end of the fixed shaft 3 is fixedly connected to the top of the inner surface of the first mounting block 1. A worm gear 4 located inside the first mounting block 1 is movably sleeved on the outer surface of the fixed shaft 3. A worm 5 is movably installed on the left side of the inner surface of the first mounting block 1. The rear end of the worm 5 passes through the first mounting block 1 and extends to the rear side of the first mounting block 1. A driving rod 6 is movably connected to the inner surface of the worm gear 4. The upper surface of the driving rod 6 is fixedly... Four trapezoidal blocks 7 are fixedly connected. The outer surfaces of the four trapezoidal blocks 7 are movably connected to the inner surface of the top of the first mounting block 1. Triangular blocks 8 are movably connected to the upper surfaces of the four trapezoidal blocks 7. A connecting plate 9 is fixedly connected to the upper surface of the triangular blocks 8. The rotation of the worm gear 5 will drive the worm wheel 4, which will start to rotate around the fixed shaft 3. At the same time, the inner surface of the worm wheel 4 will drive the driving rod 6, so that the four trapezoidal blocks 7 will start to move in opposite directions. The design of the trapezoidal blocks 7 and the triangular blocks 8 means that the triangular blocks 8 and the connecting plate 9 will move up and down as the trapezoidal blocks 7 move.

[0023] Among them, the upper surface of the first mounting block 1 is fixedly connected to a spring 10, the top of the spring 10 is fixedly connected to the lower surface of the connecting plate 9, and the outer surface of the triangular block 8 is fixedly connected to a limiting plate 11, the upper surface of the limiting plate 11 is fixedly connected to the lower surface of the connecting plate 9. The design of the spring 10 plays the role of flexibly connecting the triangular block 8 and the connecting plate 9. The spring 10 is made of spring steel with low creep rate. The design of the limiting plate 11 plays the role of blocking and limiting the trapezoidal block 7.

[0024] The upper surface of the connecting plate 9 is fixedly connected to the second mounting block 12, the upper surface of the second mounting block 12 is fixedly connected to the grooved plate 13, the inner surface of the grooved plate 13 is movably connected to the annular closed cable 14, and the outer surface of the annular closed cable 14 is movably connected to the inner surface of the lower support plate 2. The driving rod 6 clamps the grooved plate 13 and the lower support plate 2 inside the driving rod 6. This design can effectively constrain the displacement between the first mounting block 1 and the connecting plate 9, and at the same time play a good role in shock absorption and preventing beam fall.

[0025] The upper surface of the grooved plate 13 is movably connected to a pressure block 15, and the upper surface of the pressure block 15 is fixedly connected to an upper support plate 16. The inner surfaces of the left and right sides of the pressure block 15 are movably connected to clamping blocks 18. The lower surface of the clamping blocks 18 is fixedly connected to an L-shaped block 17 located outside the pressure block 15. There are two L-shaped blocks 17. The other end of the two L-shaped blocks 17 passes through the second mounting block 12 and extends into the interior of the second mounting block 12. The design of the L-shaped blocks 17 and the second mounting block 12 allows the two L-shaped blocks 17 to move towards and away from each other along the inner surface of the second mounting block 12. At the same time, the design of the clamping blocks 18 allows the pressure block 15 to be stuck on the upper surface of the grooved plate 13 under the action of the two clamping blocks 18 when the two clamping blocks 18 are moving towards each other, thereby limiting the annular closed cable 14.

[0026] Among them, the outer surfaces of the front and rear sides of the two L-shaped blocks 17 are fixedly connected to the limiting blocks 19, and the outer surfaces of the two L-shaped blocks 17 are movably connected to the lower surface of the groove plate 13. The positions of the two L-shaped blocks 17 are symmetrical about the groove plate 13, and the design of the limiting blocks 19 plays a role in limiting the movement range of the L-shaped blocks 17, thereby ensuring that the two L-shaped blocks 17 will not detach from the inner surface of the second mounting block 12.

[0027] Among them, a double-threaded rod 20 is movably installed on the rear surface of the second mounting block 12. The front end of the double-threaded rod 20 passes through the second mounting block 12 and the connecting plate 9 in sequence and extends to the front surface of the second mounting block 12. The front and rear sides of the outer surface of the double-threaded rod 20 are threaded with movable plates 21. There are two movable plates 21. The lower surface of the two movable plates 21 is hinged with connecting rods 22. There are four connecting rods 22. The four connecting rods 22 are in groups of two. The other end of each group of connecting rods 22 is hinged to the lower surface of two L-shaped blocks 17 respectively. When the double-threaded rod 20 starts to rotate, the movable plates 21 will start to move under the drive of the double-threaded rod 20. At the same time, the movement of the movable plates 21 will cause the connecting rods 22 to start to rotate. At this time, the other end of the connecting rods 22 will drive the L-shaped blocks 17, thereby causing the two L-shaped blocks 17 to start to move towards and away from each other.

[0028] Among them, the front surface of the second mounting block 12 is fixedly sleeved with a limiting rod 23 located on the left side of the double-threaded rod 20. The rear end of the limiting rod 23 passes through the second mounting block 12, the moving plate 21 and the connecting plate 9 in sequence and extends to the rear surface of the second mounting block 12. The outer surface of the limiting rod 23 and the inner surface of the moving plate 21 are movably sleeved. The design of the limiting rod 23 ensures that when the two moving plates 21 move, the direction of movement of the moving plates 21 is restricted by the limiting rod 23, thereby ensuring that the two moving plates 21 will move stably in opposite directions.

[0029] Working principle and usage process of this utility model:

[0030] When the operator needs to adjust the spacing between the No. 1 mounting block 1 and the connecting plate 9, the operator first rotates the double-threaded rod 20, so that the two moving plates 21 begin to move towards each other under the drive of the double-threaded rod 20. As the moving plates 21 move, the connecting rod 22 will start to rotate, thereby driving the two L-shaped blocks 17 to move away from each other. Finally, the two clamping blocks 18 will no longer be in contact with the pressure block 15. At this time, the pressure block 15 and the upper support plate 16 can be directly removed.

[0031] Then, the operator aligns the annular closed cable 14 with the groove at the bottom of the lower support plate 2 and rotates the worm gear 5. As the worm gear 5 rotates, the worm wheel 4 will start to rotate under the drive of the outer surface of the worm gear 5. At the same time, the driving rod 6 and the trapezoidal block 7 will start to move with the rotation of the inner surface of the worm wheel 4, so that the four trapezoidal blocks 7 move towards each other. As the trapezoidal blocks 7 move, the contact position between the trapezoidal blocks 7 and the triangular blocks 8 will change. At this time, the distance between the triangular block 8 and the first mounting block 1 will decrease until the annular closed cable... When 14 can no longer fit over the grooved plate 13 and the lower support plate 2, the operator can remove the annular closed cable 14 and replace it with a new one. Then, the operator can rotate the worm gear 5 again to allow the new annular closed cable 14 to enter the groove of the grooved plate 13 and the lower support plate 2. At this point, the operator can cover the pressure block 15 and rotate the double-threaded rod 20 to fix the pressure block 15 back above the grooved plate 13. Thus, the overall height adjustment of the lower support plate 2 and the upper support plate 16 is completed.

[0032] 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.

[0033] 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 highway bridge adjustable anti-falling beam device, comprising a mounting block (1), characterized in that: A lower support plate (2) is fixedly connected to the lower surface of the first mounting block (1). A fixed shaft (3) is fixedly connected to the middle of the upper surface of the lower support plate (2). The top end of the fixed shaft (3) is fixedly connected to the top of the inner surface of the first mounting block (1). A worm gear (4) located inside the first mounting block (1) is movably sleeved on the outer surface of the fixed shaft (3). A worm (5) is movably installed on the left side of the inner surface of the first mounting block (1). The rear end of the worm (5) penetrates the first mounting block (1). 1) and extends to the rear side of the first mounting block (1), the inner surface of the worm gear (4) is movably connected to the driving rod (6), the upper surface of the driving rod (6) is fixedly connected to the trapezoidal block (7), the number of trapezoidal blocks (7) is four, the outer surface of the four trapezoidal blocks (7) is movably connected to the inner surface of the top of the first mounting block (1), the upper surface of the four trapezoidal blocks (7) is movably connected to the triangular block (8), and the upper surface of the triangular block (8) is fixedly connected to the connecting plate (9).

2. A highway bridge adjustable anti-collapse device according to claim 1, characterized in that: A spring (10) is fixedly connected to the upper surface of the first mounting block (1). The top end of the spring (10) is fixedly connected to the lower surface of the connecting plate (9). A limit plate (11) is fixedly connected to the outer surface of the triangular block (8). The upper surface of the limit plate (11) is fixedly connected to the lower surface of the connecting plate (9).

3. A highway bridge adjustable anti-collapse device according to claim 1, characterized in that: The upper surface of the connecting plate (9) is fixedly connected to the second mounting block (12), the upper surface of the second mounting block (12) is fixedly connected to the groove plate (13), the inner surface of the groove plate (13) is movably connected to the annular closed cable (14), and the outer surface of the annular closed cable (14) is movably connected to the inner surface of the lower support plate (2).

4. A highway bridge adjustable anti-collapse device according to claim 3, characterized in that: The upper surface of the groove plate (13) is movably connected to a pressure block (15), the upper surface of the pressure block (15) is fixedly connected to an upper support plate (16), the inner surfaces of the left and right sides of the pressure block (15) are movably connected to clamping blocks (18), the lower surface of the clamping block (18) is fixedly connected to an L-shaped block (17) located outside the pressure block (15), there are two L-shaped blocks (17), the other end of the two L-shaped blocks (17) penetrates through the second mounting block (12) and extends into the interior of the second mounting block (12).

5. A highway bridge adjustable anti-collapse device according to claim 4, characterized in that: Limiting blocks (19) are fixedly connected to the outer surfaces of the front and rear sides of the two L-shaped blocks (17), and the outer surfaces of the two L-shaped blocks (17) are movably connected to the lower surface of the groove plate (13).

6. A highway bridge adjustable anti-collapse device according to claim 3, characterized in that: A double-threaded rod (20) is movably mounted on the rear surface of the second mounting block (12). The front end of the double-threaded rod (20) passes through the second mounting block (12) and the connecting plate (9) in sequence and extends to the front surface of the second mounting block (12). The front and rear sides of the outer surface of the double-threaded rod (20) are threaded with movable plates (21). There are two movable plates (21). The lower surfaces of the two movable plates (21) are hinged with connecting rods (22). There are four connecting rods (22). The four connecting rods (22) are in groups of two. The other end of each group of connecting rods (22) is hinged to the lower surface of two L-shaped blocks (17).

7. A highway bridge adjustable anti-falling beam device according to claim 3, characterized in that: The front surface of the second mounting block (12) is fixedly fitted with a limiting rod (23) located on the left side of the double-threaded rod (20). The rear end of the limiting rod (23) passes through the second mounting block (12), the moving plate (21) and the connecting plate (9) in sequence and extends to the rear surface of the second mounting block (12). The outer surface of the limiting rod (23) and the inner surface of the moving plate (21) are movably fitted together.

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