Large-span trestle anti-deformation reinforcing support structure

Abstract

This invention relates to the field of steel trestle technology, and more particularly to a deformation-resistant reinforced support structure for a long-span trestle. It includes two parallel support beams, with several supporting beams fixedly installed between the two support beams. A bridge deck is fixedly installed on the upper surface of each supporting beam, with the joint between every two adjacent bridge decks located in the middle of the upper surface of the supporting beam. The lower surfaces of the bridge decks press against the upper surfaces of the support beams on both sides. Several vertical railings are fixedly installed on one side of each support beam, and the cross-section of each vertical railing is L-shaped. This invention adds pressure plates to strengthen the overall strength of the trestle, effectively suppressing loosening and warping of the bridge deck, concealing and protecting cables to prevent exposure, scratches, and trampling, significantly improving on-site safety. The overall structure is easy to assemble and disassemble, and the components can be flexibly reset, facilitating later maintenance and reuse.

Description

Technical Field

[0001] This invention relates to the field of steel trestle technology, and in particular to a deformation-resistant reinforced support structure for long-span trestle bridges. Background Technology

[0002] Long-span steel trestle bridges are commonly used steel structure facilities for temporary passage and maintenance, and are widely used in construction sites, water-crossing sections, temporary passages, and other scenarios. Existing steel trestle bridges are mostly assembled from vertical railings, support beams, and bridge decks. The overall assembly structure is simple, and conventionally, only simple overlaps or ordinary bolts are used for fixing and limiting.

[0003] Under the continuous effects of long-term vehicle traffic, pedestrian trampling, and environmental wind vibration, the connection between the bridge deck and the frame is prone to loosening, warping, and displacement, gradually reducing the overall structural stability. This not only affects the comfort of passage but can also pose safety hazards in severe cases, shortening the overall service life of the steel trestle bridge.

[0004] Meanwhile, currently, most cables for steel trestle bridges are laid directly and exposed on the bridge deck surface, lacking dedicated storage and restraint structures. Exposed cables are easily damaged and aged by pedestrians stepping on them, vehicles scraping them, and external impacts; moreover, without fixed constraints, the cables are prone to swinging and pulling during use, easily leading to wire wear and detachment, affecting site cleanliness and posing safety risks such as leakage and line faults. Therefore, a deformation-resistant reinforced support structure for long-span trestle bridges is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by proposing a deformation-resistant reinforced support structure for long-span trestle bridges.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a deformation-resistant reinforced support structure for a long-span trestle bridge, comprising two parallel support beams, several supporting beams fixedly installed between the two support beams, a bridge deck fixedly installed on the upper surface of the supporting beams, the joint between every two adjacent bridge decks being located in the middle of the upper surface of the supporting beam, the lower surfaces of the bridge decks pressing against the upper surfaces of the support beams on both sides, and several vertical railings fixedly installed on one side of the support beams, the cross-section of the vertical railings being L-shaped; A pressure plate is slidably mounted on one side of the vertical railing, and the pressure plate presses against the upper surface edge of the bridge deck. A fixing plate is fixedly connected to the upper surface of the pressure plate near the rear of the vertical railing. A movable block is connected to one side of the front surface of the fixing plate through a first elastic mechanism. A pushing surface is provided on the side of the movable block near the vertical railing. A movable plate is slidably connected to the other side of the front surface of the fixing plate along the front-back direction. A limiting plate is connected to the front surface of the movable plate through a second elastic mechanism. A pressing mechanism is provided on the front surface of the limiting plate to press against the outer surface of the vertical railing. A linkage mechanism is provided between the movable block and the movable plate.

[0007] Preferably, the upper surface of the pressure plate is provided with a slot, and the edge of the vertical frame is slidably inserted into the inside of the slot.

[0008] Preferably, the first elastic mechanism includes a first guide bar and a first T-shaped rod fixedly connected to the rear surface of the moving block. Both the first T-shaped rod and the first guide bar slide through the outer surface of the fixed plate. A first compression spring is sleeved on the outer surface of the first T-shaped rod, and the first compression spring is located between the moving block and the fixed plate.

[0009] Preferably, a second guide bar is fixedly connected to the rear surface of the movable plate, and the rear end of the second guide bar slides through the outer surface of the fixed plate.

[0010] Preferably, the second elastic mechanism includes a second T-shaped rod fixedly connected to the rear surface of the limiting plate, the second T-shaped rod slidingly penetrating the outer surface of the moving plate, a second compression spring sleeved on the outer surface of the second T-shaped rod, the second compression spring being located between the moving plate and the limiting plate, and a third guide bar fixedly connected to one side of the rear surface of the limiting plate, the third guide bar slidingly penetrating the outer surface of the fixed plate.

[0011] Preferably, the linkage mechanism includes a rotating cylinder rotatably connected to the upper surface of the pressure plate via a rotating shaft. Transmission rods are slidably inserted at both ends of the rotating cylinder. Connecting shafts are fixedly connected to the ends of the transmission rods on both sides that are far apart. Connecting seats are rotatably sleeved on the outer side of the connecting shafts. The connecting seats on both sides are fixedly disposed at the corners of the moving block and the sides of the moving plate, respectively.

[0012] Preferably, a mounting plate is fixedly connected to the lower end of the vertical frame, one side edge of the mounting plate is fixedly connected to the side surface of the support beam, and a limiting pad is fixedly connected to the lower surface of the pressure plate, the limiting pad being located in the gap between the vertical frame and the support beam.

[0013] Preferably, several horizontal railings are fixedly connected to one side surface of several vertical railings, and several steel legs are fixedly installed on the lower surface of the support beam.

[0014] Preferably, the pressing mechanism includes a limiting block fixedly connected to the front surface of the limiting plate. The upper surface of the limiting block has a sliding groove, and a pressure block is slidably embedded in the inner side of the sliding groove. A T-shaped post is fixedly connected to one side surface of the pressure block, and the T-shaped post slides through the side wall of the sliding groove. A friction pad is fixedly connected to the other side surface of the pressure block, and the friction pad contacts the outer surface of the vertical frame. Guide surfaces are respectively provided at the front corners of the limiting block, the pressure block, and the friction pad. A friction roller is rotatably connected to the upper end of the front surface of the limiting plate. One side surface of the friction roller contacts the outer surface of the vertical frame, and the lower surface of the friction roller contacts the upper surface of the pressure block.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The invention adds a pressure plate structure, which effectively suppresses the stress deformation of long-span trestle bridges, prevents the bridge deck from loosening and warping, and improves the overall structural stability and deformation resistance. 2. In this invention, the cable is concealed and stored in the gap between the support beam and the vertical frame, avoiding exposed laying, avoiding scratching or stepping on the cable, avoiding cable swinging, and reducing safety hazards. 3. The present invention is easy to install and disassemble, and the components can be automatically and elastically reset, which facilitates later maintenance, cable maintenance and component reuse. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a deformation-resistant reinforced support structure for a long-span trestle bridge according to the present invention. Figure 2 This invention relates to a deformation-resistant reinforced support structure for a long-span trestle bridge. Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the vertical railing of a deformation-resistant reinforced support structure for a long-span trestle bridge according to the present invention; Figure 4 This invention relates to a deformation-resistant reinforced support structure for a long-span trestle bridge. Figure 3 Enlarged view at point B in the middle; Figure 5 This is a schematic diagram of the pressure plate of a deformation-resistant reinforced support structure for a large-span trestle bridge according to the present invention. Figure 6 This invention relates to a deformation-resistant reinforced support structure for a long-span trestle bridge. Figure 5 Enlarged view at point C; Figure 7 This is a schematic diagram of the limiting plate of a deformation-resistant reinforced support structure for a large-span trestle bridge according to the present invention; Figure 8 This is a cross-sectional view of the rotating cylinder of a large-span trestle bridge anti-deformation reinforcement support structure according to the present invention; Figure 9This is a schematic diagram from below one side of a large-span trestle bridge deformation-resistant reinforced support structure according to the present invention. Figure 10 This invention relates to a deformation-resistant reinforced support structure for a long-span trestle bridge. Figure 9 Enlarged view of point D in the middle.

[0017] The components are as follows: 1. Pressure plate; 2. Bayonet; 3. Fixing plate; 4. Moving block; 5. Pushing surface; 6. First T-shaped rod; 7. First compression spring; 8. First guide bar; 9. Moving plate; 10. Second guide bar; 11. Second T-shaped rod; 12. Second compression spring; 13. Limiting plate; 14. Third guide bar; 15. Limiting block; 16. Slide groove; 17. Pressure block; 18. Friction pad; 19. T-shaped column; 20. Guide surface; 21. Friction roller; 22. Rotating cylinder; 23. Transmission rod; 24. Rotating shaft; 25. Connecting seat; 26. Connecting shaft; 27. Limiting pad; 28. Vertical railing; 29. ​​Mounting plate; 30. Support beam; 31. Support beam; 32. Bridge deck; 33. Horizontal railing; 34. Steel support leg; 35. Cable. Detailed Implementation

[0018] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0019] like Figures 1-10 The large-span trestle bridge anti-deformation reinforcement support structure shown includes two parallel support beams 30, and several supporting beams 31 are fixedly installed between the two support beams 30. Bridge deck 32 is fixedly installed on the upper surface of the supporting beams 31. The joint between every two adjacent bridge decks 32 is located in the middle of the upper surface of the supporting beam 31. The lower surface of the bridge deck 32 presses against the upper surface of the support beams 30 on both sides. Several vertical railings 28 are fixedly installed on one side of the support beams 30. The cross-section of the vertical railings 28 is L-shaped. A pressure plate 1 is slidably mounted on one side of the vertical railing 28. The pressure plate 1 presses against the edge of the upper surface of the bridge deck 32. A fixing plate 3 is fixedly connected to the upper surface of the pressure plate 1 near the rear of the vertical railing 28. A moving block 4 is connected to one side of the front surface of the fixing plate 3 through a first elastic mechanism. A pushing surface 5 is provided on the side of the moving block 4 near the vertical railing 28. A moving plate 9 is slidably connected to the other side of the front surface of the fixing plate 3 in the front-back direction. A limiting plate 13 is connected to the front surface of the moving plate 9 through a second elastic mechanism. A pressing mechanism is provided on the front surface of the limiting plate 13 to press against the outer surface of the vertical railing 28. A linkage mechanism is provided between the moving block 4 and the moving plate 9.

[0020] The upper surface of the pressure plate 1 has a slot 2, and the edge of the vertical frame 28 slides into the inside of the slot 2. This achieves mutual combination and positioning, ensuring the stability of the overall splicing structure.

[0021] The first elastic mechanism includes a first guide bar 8 and a first T-shaped rod 6 fixedly connected to the rear surface of the movable block 4. Both the first T-shaped rod 6 and the first guide bar 8 slide through the outer surface of the fixed plate 3. The first guide bar 8 can slide back and forth smoothly, playing a guiding and limiting role. A first compression spring 7 is sleeved on the outer surface of the first T-shaped rod 6. The first compression spring 7 is located between the movable block 4 and the fixed plate 3. The movable block 4 is reset by relying on the elastic deformation of the first compression spring 7.

[0022] The rear surface of the movable plate 9 is fixedly connected to a second guide bar 10. The rear end of the second guide bar 10 slides through the outer surface of the fixed plate 3, forming a stable guiding structure through sliding cooperation. This effectively restricts the movement trajectory of the movable plate 9, prevents deviation or tilting during use, and ensures smooth and stable reciprocating motion.

[0023] The second elastic mechanism includes a second T-shaped rod 11 fixedly connected to the rear surface of the limiting plate 13. The second T-shaped rod 11 slides through the outer surface of the moving plate 9 and can slide flexibly back and forth. A second compression spring 12 is sleeved on the outer surface of the second T-shaped rod 11. The second compression spring 12 is located between the moving plate 9 and the limiting plate 13. A third guide bar 14 is fixedly connected to one side of the rear surface of the limiting plate 13. The third guide bar 14 slides through the outer surface of the fixed plate 3 and plays an auxiliary guiding role to improve the stability of the structure.

[0024] The linkage mechanism includes a rotating cylinder 22 rotatably connected to the upper surface of the pressure plate 1 via a rotating shaft 24. The rotating cylinder 22 can rotate flexibly around the rotating shaft 24. Transmission rods 23 are slidably inserted at both ends of the rotating cylinder 22, which can adaptively adjust the overall length according to the angle change. Connecting shafts 26 are fixedly connected to the ends of the two transmission rods 23 that are far apart. Connecting seats 25 are rotatably sleeved on the outer side of the connecting shafts 26. The connecting seats 25 on both sides are fixedly set at the corner of the moving block 4 and the side of the moving plate 9, respectively, to ensure that the connection of the transmission rods 23 can rotate flexibly, thereby realizing linkage transmission.

[0025] A mounting plate 29 is fixedly connected to the lower end of the vertical frame 28. One edge of the mounting plate 29 is fixedly connected to the side surface of the support beam 30 to ensure a tight and secure connection that is not prone to detachment. A limiting pad 27 is fixedly connected to the lower surface of the pressure plate 1. The limiting pad 27 is located in the gap between the vertical frame 28 and the support beam 30. The limiting pad 27 is made of flexible rubber and plastic material and is used to neatly store the bottom cable 35. It does not require pressing the surface of the cable 35, but only restricts the cable 35 from swinging up and down significantly.

[0026] Several vertical railings 28 are fixedly connected to several horizontal railings 33 on one side surface, forming an integrated protective fence frame. Several steel legs 34 are fixedly installed on the lower surface of the support beam 30, so that the overall load-bearing force is even and the upper structure is stably supported.

[0027] The clamping mechanism includes a limiting block 15 fixedly connected to the front surface of the limiting plate 13. A groove 16 is provided on the upper surface of the limiting block 15. A pressure block 17 is slidably embedded in the inner side of the groove 16. A T-shaped post 19 is fixedly connected to one side surface of the pressure block 17. The T-shaped post 19 slides through the side wall of the groove 16 to guide and limit the lateral movement of the pressure block 17. A friction pad 18 is fixedly connected to the other side surface of the pressure block 17. The friction pad 18 contacts the outer surface of the vertical railing 28 to increase the limiting friction. Guide surfaces 20 are provided at the front corners of the limiting block 15, the pressure block 17 and the friction pad 18 to avoid interference and prevent corners from scratching, ensuring smooth and complete clamping action. A friction roller 21 is rotatably connected to the upper end of the front surface of the limiting plate 13. One side surface of the friction roller 21 contacts the outer surface of the vertical railing 28, and the lower surface of the friction roller 21 contacts the upper surface of the pressure block 17. The friction roller 21 is made of a hard, wear-resistant polyurethane-coated metal core material, which is pressure-resistant, not easily deformed, and provides sufficient friction when in contact with the surface. The friction pad 18 is made of a high-strength, non-slip rubber composite wear-resistant substrate, which will not scratch the paint surface of the railing when it is attached and clamped, and is not easy to crack or fall off under long-term pressure.

[0028] During installation, cable 35 is first laid between support beam 30 and vertical frame 28, and supported by mounting plate 29. Then, pressure plate 1 is assembled. After aligning the clamp 2 with vertical frame 28 and completing the connection, it is pressed down. The specific assembly process is as follows: When clamp 2 is fitted onto the side edge of vertical frame 28, vertical frame 28 contacts and presses against pushing surface 5, driving moving block 4 to move backward and compressing first compression spring 7. While moving, moving block 4 drives rotating cylinder 22 to rotate around rotating shaft 24. The transmission rods 23 on both sides swing synchronously with rotating cylinder 22 and slide relative to rotating cylinder 22, thereby pulling moving plate 1. 9. The device moves forward, during which the limiting block 15 abuts against the rear surface of the vertical railing 28, and the second compression spring 12 is squeezed. When the latch 2 is fully engaged with the side edge of the vertical railing 28, the limiting block 15 is released from obstruction, and the elastic thrust of the second compression spring 12 pushes the limiting block 15 and the friction roller 21 forward as a whole, fitting and limiting them against the side of the vertical railing 28. After that, the pressure plate 1 is pressed down continuously, and the friction roller 21 rolls along the surface of the vertical railing 28, simultaneously driving the pressure block 17 to move closer to one side of the vertical railing 28, so that the friction pad 18 is tightly pressed against the outer wall of the vertical railing 28, thereby ensuring the overall stability of the assembly and fixation of the pressure plate 1.

[0029] After the pressure plate 1 is installed in place, its bottom is pressed tightly against the surface of the bridge panel 32, which can reinforce and constrain the bridge panel 32 and prevent the bridge panel 32 from loosening or shifting during long-term use.

[0030] Meanwhile, the cable 35 is stored and hidden in the area under the bridge deck 32, and is constrained within the gap between the vertical railing 28 and the support beam 30, which effectively prevents the cable 35 from swaying and swinging, and also avoids accidental contact and scratching by passing pedestrians and vehicles, thus improving safety.

[0031] During the subsequent disassembly, first lift the pressure plate 1 upwards to release the friction pad 18 from its pressing state on the vertical railing 28, maintaining only slight contact. Then, push the limiting plate 13 backwards and squeeze the second compression spring 12. After the limiting block 15 is completely separated from the side limit of the vertical railing 28, the latch 2 can be separated from the vertical railing 28. After the latch 2 is completely separated from the limit, release the limiting plate 13. Driven by the elastic force of the first compression spring 7, and with the rear limit constraint of the first T-shaped rod 6, the moving block 4 moves forward to complete the reset. At the same time, under the elastic force of the second compression spring 12, and relying on the rear limit of the second T-shaped rod 11, the moving plate 9 and the limiting plate 13 separate to the maximum distance. As the moving block 4 moves forward to reset, the moving plate 9 is driven to return to its original position synchronously through the linkage transmission of the rotating cylinder 22 and the transmission rod 23, so that the overall structure returns to its initial state, which is convenient for the repeated assembly and use of the pressure plate 1.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A deformation-resistant reinforced support structure for a long-span trestle bridge, comprising two parallel support beams (30), characterized in that: Several supporting beams (31) are fixedly installed between the two supporting beams (30). Bridge deck (32) is fixedly installed on the upper surface of the supporting beam (31). The joint of each two adjacent bridge decks (32) is located in the middle of the upper surface of the supporting beam (31). The lower surfaces of the bridge deck (32) press against the upper surfaces of the supporting beams (30) on both sides. Several vertical railings (28) are fixedly installed on one side of the supporting beam (30). The cross-section of the vertical railings (28) is L-shaped. A pressure plate (1) is slidably mounted on one side of the vertical railing (28). The pressure plate (1) presses against the upper surface edge of the bridge deck (32). A fixing plate (3) is fixedly connected to the upper surface of the pressure plate (1) and near the rear of the vertical railing (28). A moving block (4) is connected to one side of the front surface of the fixing plate (3) through a first elastic mechanism. A pushing surface (5) is provided on the side of the moving block (4) near the vertical railing (28). A moving plate (9) is slidably connected to the other side of the front surface of the fixing plate (3) along the front-back direction. A limiting plate (13) is connected to the front surface of the moving plate (9) through a second elastic mechanism. A pressing mechanism is provided on the front surface of the limiting plate (13) to press against the outer surface of the vertical railing (28). A linkage mechanism is provided between the moving block (4) and the moving plate (9).

2. The deformation-resistant reinforced support structure for a long-span trestle bridge according to claim 1, characterized in that: The upper surface of the pressure plate (1) is provided with a slot (2), and the edge of the vertical frame (28) is slidably inserted into the inside of the slot (2).

3. The deformation-resistant reinforced support structure for a long-span trestle bridge according to claim 1, characterized in that: The first elastic mechanism includes a first guide bar (8) and a first T-shaped rod (6) fixedly connected to the rear surface of the moving block (4). The first T-shaped rod (6) and the first guide bar (8) slide through the outer surface of the fixed plate (3). A first compression spring (7) is sleeved on the outer surface of the first T-shaped rod (6). The first compression spring (7) is located between the moving block (4) and the fixed plate (3).

4. The deformation-resistant reinforced support structure for a long-span trestle bridge according to claim 1, characterized in that: The rear surface of the movable plate (9) is fixedly connected to a second guide bar (10), and the rear end of the second guide bar (10) slides through the outer surface of the fixed plate (3).

5. The deformation-resistant reinforced support structure for a long-span trestle bridge according to claim 1, characterized in that: The second elastic mechanism includes a second T-shaped rod (11) fixedly connected to the rear surface of the limiting plate (13). The second T-shaped rod (11) slides through the outer surface of the moving plate (9). A second compression spring (12) is sleeved on the outer surface of the second T-shaped rod (11). The second compression spring (12) is located between the moving plate (9) and the limiting plate (13). A third guide bar (14) is fixedly connected to one side of the rear surface of the limiting plate (13). The third guide bar (14) slides through the outer surface of the fixed plate (3).

6. The deformation-resistant reinforced support structure for a long-span trestle bridge according to claim 1, characterized in that: The linkage mechanism includes a rotating cylinder (22) rotatably connected to the upper surface of the pressure plate (1) via a rotating shaft (24). Transmission rods (23) are slidably inserted at both ends of the rotating cylinder (22). A connecting shaft (26) is fixedly connected to the opposite ends of the transmission rods (23) on both sides. A connecting seat (25) is rotatably sleeved on the outer side of the connecting shaft (26). The connecting seats (25) on both sides are fixedly set at the corner of the moving block (4) and the side of the moving plate (9).

7. The deformation-resistant reinforced support structure for a long-span trestle bridge according to claim 1, characterized in that: The lower end of the vertical railing (28) is fixedly connected to an installation plate (29), one side edge of the installation plate (29) is fixedly connected to the side surface of the support beam (30), and the lower surface of the pressure plate (1) is fixedly connected to a limiting pad (27), which is located in the gap between the vertical railing (28) and the support beam (30).

8. The deformation-resistant reinforced support structure for a long-span trestle bridge according to claim 1, characterized in that: Several horizontal railings (33) are fixedly connected to one side surface of several vertical railings (28), and several steel legs (34) are fixedly installed on the lower surface of the support beam (30).

9. The deformation-resistant reinforced support structure for a long-span trestle bridge according to claim 1, characterized in that: The pressing mechanism includes a limiting block (15) fixedly connected to the front surface of the limiting plate (13). A groove (16) is provided on the upper surface of the limiting block (15). A pressure block (17) is slidably embedded in the inner side of the groove (16). A T-shaped column (19) is fixedly connected to one side surface of the pressure block (17). The T-shaped column (19) slides through the side wall of the groove (16). A friction pad (18) is fixedly connected to the other side surface of the pressure block (17). The friction pad (18) contacts the outer surface of the vertical railing (28). A guide surface (20) is provided at the front corner of the limiting block (15), the pressure block (17) and the friction pad (18). A friction roller (21) is rotatably connected to the upper end of the front surface of the limiting plate (13). One side surface of the friction roller (21) contacts the outer surface of the vertical railing (28). The lower surface of the friction roller (21) contacts the upper surface of the pressure block (17).

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