Railway bridge walkway assembly

Abstract

A railway bridge walkway assembly, relating to the field of railway bridge construction technology, provides a railway bridge walkway assembly that can be connected to railway bridge supports at any position, has low requirements for working conditions, is anti-loosening and vibration-damping, lightweight, high-strength, and has a long service life. The invention includes a walkway and several rack and pinion fasteners; the walkway includes several rectangular plate-shaped walkway units; one side of each walkway unit has several protruding connecting blocks, and the other side has several concave connecting grooves, with the protruding connecting blocks and concave connecting grooves adapted to each other; one end of each walkway unit has an upper connecting block, and the other end has a lower connecting block, with the upper connecting block and lower connecting block adapted to each other; the bottom surface of each walkway unit has a longitudinally formed mounting groove; the rack and pinion fasteners are L-shaped, with their upper ends connected to the mounting groove, and the shape of the rack and pinion fasteners is adapted to the mounting groove, allowing the rack and pinion fasteners to be adjusted and connected to any longitudinal position within the mounting groove.

Description

Technical Field

[0001] This invention relates to the field of railway bridge construction technology, and specifically to a railway bridge pedestrian slab assembly. Background Technology

[0002] Existing railway bridge pedestrian slabs are typically made of precast concrete components, with concrete filling the spaces between the slabs. Chinese patent CN201776828U discloses a precast pedestrian slab component, which is formed by adding concrete and other materials into a mold, followed by vibration, compaction, curing, and demolding; several precast components are then spliced ​​and paved to form a pedestrian slab of the required size.

[0003] Existing walking boards have the following drawbacks:

[0004] ① Precast pedestrian slab components are typically installed in single-span configurations. In practical applications, due to varying spacing between bridge supports and complex working conditions, coupled with the fixed length of the precast pedestrian slab components, insufficient overlap between the slab ends and the bridge supports often occurs, posing a risk of component detachment. Furthermore, external factors such as railway bridge vibrations can loosen and dislodge the concrete filling between the pedestrian slabs, posing a safety threat to pedestrians or vehicles below. Simultaneously, bridge vibrations can also cause significant movement of the pedestrian slabs, exacerbating the risk of detachment and creating a substantial safety hazard.

[0005] ② Each square meter of concrete walkway weighs up to 200 kilograms, making it inconvenient to transport and difficult to work at heights. In addition, the walkway puts great load-bearing pressure on the hollow piers and bridge supports of the bridge, affecting the lifespan of the bridge.

[0006] ③ Concrete pedestrian slabs have poor cold resistance and will crack after freezing and severe cold, and usually have a service life of only 2 years. Summary of the Invention

[0007] To address the above problems, this invention provides a railway bridge pedestrian board assembly that can be connected to railway bridge supports at any location, is anti-loosening and vibration-damping, has reliable connections, is lightweight and high-strength, and has a long service life.

[0008] The technical solution of this invention is as follows:

[0009] A railway bridge pedestrian walkway assembly includes a walkway and a plurality of rack and pinion fasteners;

[0010] The walking board comprises several rectangular plate-shaped walking board units;

[0011] The walking board unit has several protruding connecting blocks on one side and several concave connecting grooves on the other side, with the protruding connecting blocks and the concave connecting grooves being adapted to each other; one end of the walking board unit has an upper connecting block and the other end has a lower connecting block, with the upper connecting block and the lower connecting block being adapted to each other;

[0012] The bottom surface of the walking board unit has a mounting groove along the longitudinal direction; the rack buckle is L-shaped and its upper end is connected to the mounting groove. The shape of the rack buckle is adapted to the mounting groove, so that the rack buckle can be adjusted to be connected to any longitudinal position of the mounting groove.

[0013] Furthermore, the sidewall of the mounting groove is provided with a mounting rail with a regularly arranged concave-convex structure, and the upper end of the rack buckle is provided with mounting teeth that are adapted to the mounting rail.

[0014] Furthermore, the convex connecting block and the concave connecting groove are connected by a wedge shape.

[0015] Furthermore, the convex connecting block and the concave connecting groove, the upper connecting block and the lower connecting block, and the mounting groove and the rack buckle are all connected by fasteners;

[0016] The convex connecting block, the concave connecting groove, the upper connecting block, and the lower connecting block are all provided with connecting holes that are compatible with the fastener;

[0017] The bottom surface of the mounting groove is provided with several openings that are compatible with the fastener, and the top surface of the rack buckle is provided with mounting holes that are compatible with the fastener.

[0018] Furthermore, the opening on the bottom surface of the mounting groove is an oblong hole.

[0019] Furthermore, two longitudinal cutting grooves are provided on the top surface of the walking board unit at the position corresponding to the mounting groove, and the width of the elongated hole is not greater than the distance between the two cutting grooves.

[0020] Furthermore, a boss is provided at the top end of the upper surface of the rack buckle, and the height of the boss is less than the height of the mounting rail.

[0021] Furthermore, the upper surface of the lower end of the rack buckle is provided with a concave-convex structure.

[0022] Furthermore, it also includes railing fixing buckles;

[0023] The railing fixing buckle includes a claw and a claw mounting base, and the claw mounting base is connected to the walking board.

[0024] Furthermore, the gripper mounting base is provided with a slide rail, and the gripper is provided with a slide groove, the slide rail being adapted to the slide groove.

[0025] Furthermore, the inner surface of the gripper is provided with a reverse tooth-like structure.

[0026] Furthermore, the fastener includes an anti-loosening bolt, which is an internal hexagonal pan head bolt; the connecting holes of the convex connecting block and the lower connecting block, and the mounting holes of the rack and pinion are all fitted with nuts that are compatible with the anti-loosening bolt.

[0027] Furthermore, the top surface of the walking plate unit is evenly covered with concave and convex textures.

[0028] Furthermore, a transverse cutting groove is provided on the top surface of the walking board unit.

[0029] Furthermore, several windproof grooves are provided on both sides of the walking board unit, and the windproof grooves of two adjacent walking board units are enclosed to form a windproof hole.

[0030] Furthermore, the walking plate unit is made of SMC composite material or DMC composite material.

[0031] Furthermore, the dimensions of the walking board unit are: length × width × height = 3000mm × 300mm × 70mm or 3000mm × 250mm × 70mm or 3000mm × 150mm × 70mm.

[0032] This invention discloses a railway bridge walkway assembly. By creating mounting grooves on the bottom surface of the walkway and using compatible rack and pinion fasteners, a reliable connection is achieved between the walkway and the railway bridge support at any longitudinal position. This effectively improves the longitudinal connection reliability of the walkway in application environments with varying railway bridge support spacing. It also provides excellent anti-loosening and vibration-damping performance under high-altitude, high-vibration conditions, eliminating safety hazards such as concrete falling or walkway detachment associated with traditional concrete walkways. Furthermore, this invention uses railing fixing buckles to clamp the railway bridge support railings, preventing lateral movement of the walkway and further improving its vibration and wind resistance, ensuring a stable connection in the designated position even in harsh and extreme environments. The windproof grooves and cutting grooves in this invention also address the issue of water drainage from the walkway surface.

[0033] The railway bridge pedestrian slab assembly of this invention is lightweight and high-strength, weighing approximately 20-30 kg per square meter, only about 1 / 6 the weight of a traditional concrete pedestrian slab. This railway bridge pedestrian slab assembly also exhibits strong cold resistance, maintaining stable and reliable strength even in freezing and frigid environments, with a service life exceeding 15 years, sufficient to cover the entire service life of the railway bridge. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the present invention.

[0035] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0036] Figure 3 This is a top view of the walking board unit in this invention.

[0037] Figure 4 This is a bottom view of the walking board unit in this invention.

[0038] Figure 5 This is a front view of the walking board unit in this invention.

[0039] Figure 6 This is a three-dimensional schematic diagram of the walking plate unit in this invention.

[0040] Figure 7 This is a schematic diagram of the rack and pinion mechanism in this invention.

[0041] Figure 8 This is a schematic diagram of the railing fixing buckle in this invention.

[0042] Figure 9 This is a schematic diagram of the gripper mounting base of the railing fixing buckle in this invention.

[0043] Figure 10 This is a schematic diagram of the anti-loosening bolt in this invention.

[0044] Figure 11 This is an application illustration of the present invention. Figure 1 ,

[0045] Figure 12 This is an application illustration of the present invention. Figure 2 .

[0046] In the diagram: 1-Walking board, 11-Walking board unit, 111-Protruding connecting block, 112-Concave connecting groove, 113-Upper connecting block, 114-Lower connecting block, 115-Mounting groove, 1150-Oblong hole, 1151-Mounting rail, 116-Cutting groove, 117-Windproof groove, 118-Rough and concave texture; 2-Rack and pinion buckle, 20-Mounting hole, 21-Mounting tooth, 22-Boss; 3-Guardrail fixing buckle, 31-Claw, 311-Slide groove, 32-Claw mounting seat, 321-Slide rail; 4-Anti-loosening bolt; 5-Bracket, 51-Bracket railing. Implementation

[0047] The following is in conjunction with the appendix Figure 1-12 This further illustrates the present invention.

[0048] The present invention provides a railway bridge walkway assembly for laying on a support 5 of a railway bridge. One side of the support 5 is connected to the railway bridge and the other side is connected to the support railing 51. The present invention includes a walkway 1 and a plurality of rack and pinion buckles 2.

[0049] The walking board 1 includes several rectangular plate-shaped walking board units 11;

[0050] One side of the walking board unit 11 is provided with a protruding connecting block 111, and the other side is provided with a concave connecting groove 112. The protruding connecting block 111 and the concave connecting groove 112 are adapted to each other. The protruding connecting block 111 and the concave connecting groove 112 between two adjacent walking board units 11 are connected to form a wider plate-like structure, realizing the lateral expansion of the walking board 1. One end of the walking board unit 11 is provided with an upper connecting block 113, and the other end is provided with a lower connecting block 114. The upper connecting block 113 and the lower connecting block 114 are adapted to each other. The upper connecting block 113 and the lower connecting block 114 between two adjacent walking board units 11 are connected to form a longer plate-like structure, realizing the longitudinal expansion of the walking board 1. The walking board 1 achieves the length and width required by the installation environment of the bracket 5 through the side-to-side connection and / or end-to-end connection between the walking board units 11. The connection between the walking board units 11 can adopt a snap connection, wedge connection or other connection method.

[0051] The bottom surface of the walkway unit 11 has a longitudinally provided mounting groove 115; the rack buckle 2 is L-shaped, with the upper end connected to the mounting groove 115 and the lower end used to connect to the bracket 5. The shape of the upper end of the rack buckle 2 is adapted to the mounting groove 115, so that the rack buckle 2 can be adjusted to be connected to any longitudinal position of the mounting groove 115, realizing the locking and fixing of the walkway 1 to the bracket 5 at any longitudinal position. This effectively solves the defect of insufficient overlap with the bracket 5 that is easy to occur when fixing the length of precast concrete components in the prior art, and eliminates safety hazards such as concrete falling or local walkway detachment.

[0052] The side wall of the mounting groove 115 is provided with a mounting rail 1151 with a regularly arranged concave and convex structure. The upper end of the rack buckle 2 is provided with a mounting tooth 21 that matches the mounting rail 1151, so that the rack buckle 2 can lock and fix the walking plate 1 and the bracket 5 at any position by inserting the mounting tooth 21 into any position of the mounting rail 1151, or by using a gear-like meshing structure.

[0053] The convex connecting block 111 and the concave connecting groove 112 are connected by a wedge shape. The convex connecting block 111 is a wedge block and the concave connecting groove 112 is a wedge opening. The cooperation between the wedge block and the wedge opening is used to achieve the lateral locking of the walking plate 1.

[0054] The convex connecting block 111 and the concave connecting groove 112, the upper connecting block 113 and the lower connecting block 114, and the mounting groove 115 and the rack buckle 2 are all connected by fasteners.

[0055] The convex connecting block 111, the concave connecting groove 112, the upper connecting block 113, and the lower connecting block 114 are all provided with connecting holes that are compatible with the fasteners, so that the fasteners can connect the convex connecting block 111 and the concave connecting groove 112, or the upper connecting block 113 and the lower connecting block 114, into a whole through the connecting holes, thereby realizing the locking and fixing between adjacent walking plate units 11.

[0056] The bottom surface of the mounting groove 115 is provided with several openings that are compatible with the fasteners, and the top surface of the rack buckle 2 is provided with mounting holes 20 that are compatible with the fasteners, so that the fasteners can fasten the walking plate 1 and the rack buckle 2 through the openings and mounting holes 20; the shape of the openings can be circular or other shapes.

[0057] The bottom surface of the mounting slot 115 has an oblong hole 1150. Since the oblong hole 1150 has longitudinal position adjustment space, compared with the round hole, it can better adapt to the fine adjustment needs of the connection position between the walking plate 1 and the rack buckle 2. Even if the oblong hole 1150 is not opened at the connection position between the walking plate 1 and the bracket 5, the walking plate 1 can be connected to the bracket 5 through the rack buckle 2 by opening the oblong hole 1150 on the walking plate 1 on site. The accuracy requirement of opening the hole on site is low and it is simple and easy to do.

[0058] Two longitudinal cutting grooves 116 are provided on the top surface of the walkway unit 11, corresponding to the mounting groove 115. The width of the elongated hole 1150 is not greater than the distance between the two cutting grooves 116. These grooves are used for lateral positioning when drilling the elongated hole 1150 on site, thereby improving the accuracy of drilling. The cutting grooves 116 also have drainage and air guiding functions.

[0059] The top surface of the upper end of the rack buckle 2 is provided with a boss 22, the height of which is less than the height of the mounting rail 1151. Due to the presence of the boss 22, a gap is formed between the rack buckle 2 and the mounting groove 115, which has the function of absorbing vibration and reducing vibration. The lower end of the rack buckle 2 abuts against the bracket 5 and the upper end abuts against the walking plate unit 11. When the rack buckle 2 is tilted, the rack buckle 2 and the bracket 5 are only in line contact. At this time, by adjusting the fasteners, the line contact between the rack buckle 2 and the bracket 5 can be adjusted to surface contact, thereby increasing the contact friction between the two.

[0060] The upper surface of the lower end of the rack buckle 2 has a concave-convex structure to increase the friction between the rack buckle 2 and the contact surface of the bracket 5, preventing the walking board 1 from slipping. The rack buckle 2 can be made of weather-resistant engineering plastics, such as polyamide or modified polyethylene.

[0061] It also includes railing fixing buckles 3;

[0062] The railing fixing buckle 3 includes a claw 31 and a claw mounting base 32. The claw mounting base 32 is connected to the walkway 1, and the claw 31 is used to clamp the support railing 51, enhancing the connection strength between the walkway 1 and the support 5. It is mainly used for wind protection and to prevent the walkway 1 from slipping laterally. The claw 31 and the claw mounting base 32 can be connected in an adjustable manner to adapt to the fine-tuning requirements of the lateral installation space.

[0063] The gripper mounting base 32 is equipped with a slide rail 321, and the gripper 31 is equipped with a slide groove 311. The slide rail 321 and the slide groove 311 are adapted to each other, allowing the slide groove 311 to slide laterally on the slide rail 321. This is used to adapt to the installation fine-tuning requirements when the lateral distance between the walking board 1 and the support railing 5 is not uniform. This ensures that within a specific range on the gripper mounting base 32, whether near or far, the walking board 1 and the support railing 5 can be reliably connected by the railing fixing buckle 3. After the gripper 31 is adjusted to the required position, the gripper 31 is locked to the gripper mounting base 32 using self-drilling screws. The gripper mounting base 32 is provided with an opening for connecting to the side of the walking board unit 11 using fasteners.

[0064] The inner surface of the gripper 31 is provided with a reverse tooth-like structure, that is, the tooth-like structure faces away from the opening of the gripper 31, which is used to increase the friction between the contact surface of the gripper 31 and the support railing 51, making the connection of the gripper 31 on the support railing 51 easier to enter and harder to exit, thus improving the connection reliability between the two.

[0065] Fasteners include anti-loosening bolts 4, which are hexagonal pan head bolts; the connecting holes of the convex connecting block 111 and the lower connecting block 114, and the mounting holes 20 of the rack and pinion buckle 2 are all fitted with nuts that are compatible with the anti-loosening bolts 4, so that the connection between the walking board units 11 and the connection between the walking board unit 11 and the rack and pinion buckle 2 can be operated through the upper space of the walking board 1, avoiding the safety risks of working under the board surface and effectively reducing the installation difficulty of the walking board 1 in high-altitude operations.

[0066] The top surface of the walking board unit 11 is evenly covered with concave and convex textures 118 for anti-slip purposes.

[0067] A transverse cutting groove 116 is also provided on the top surface of the walkway unit 11. When the length of the walkway unit 11 is greater than the length required for the actual application environment, the longitudinal cutting and positioning of the walkway unit 11 can be achieved through the transverse cutting groove 116, so that it is shortened to the required length. At the same time, the transverse cutting groove 116 has the function of identifying the length of the walkway unit 11, so that its length can be directly identified without the need for on-site measurement, simplifying on-site construction. For example, a transverse cutting groove 116 can be set every 50cm or 80cm.

[0068] Several windproof grooves 117 are provided on both sides of the walking board unit 11. The windproof grooves 117 of two adjacent walking board units 11 are enclosed to form windproof holes, which are used to reduce the wind resistance of the walking board 1 in the wind of train passage or natural wind, and enhance the connection reliability between the walking board 1 and the support 5. At the same time, the windproof grooves 117 or windproof holes also have the functions of drainage and weight reduction.

[0069] The material of the walking board unit 11 is SMC composite material, DMC composite material or other thermosetting plastic.

[0070] The preferred dimensions of the walking board unit 11 are: length × width × height = 3000mm × 300mm × 70mm, 3000mm × 250mm × 70mm, or 3000mm × 150mm × 70mm. The length and width of the walking board unit 11 are typically calculated based on the center-to-center distance between the connecting holes at both ends or sides of the walking board unit 11.

[0071] Regarding the content disclosed in this invention, the following points need to be explained:

[0072] (1) The embodiments disclosed in this invention are merely examples, and the technical solutions implemented by other equivalent modifications fall within the scope of protection of this invention;

[0073] (2) Where there is no conflict, the technical features disclosed in this invention can be combined with each other to obtain new embodiments;

[0074] The above are merely specific embodiments disclosed in this invention, but the scope of protection of this disclosure is not limited thereto. Any technical solutions obtained by those skilled in the art after modifying or transforming certain technical features based on the content disclosed in this invention should be within the scope of protection of this invention.

Claims

1. A railway bridge pedestrian slab assembly, characterized in that, Includes a walking board and several toothed buckles; The walking board comprises several rectangular plate-shaped walking board units; The walking board unit has several protruding connecting blocks on one side and several concave connecting grooves on the other side, with the protruding connecting blocks and the concave connecting grooves being adapted to each other; one end of the walking board unit has an upper connecting block and the other end has a lower connecting block, with the upper connecting block and the lower connecting block being adapted to each other; The bottom surface of the walking board unit has a mounting groove along the longitudinal direction; the rack buckle is L-shaped and its upper end is connected to the mounting groove. The shape of the rack buckle is adapted to the mounting groove, so that the rack buckle can be adjusted to be connected to any longitudinal position of the mounting groove. The sidewall of the mounting groove is provided with a mounting rail with a regularly arranged concave-convex structure, and the upper end of the rack buckle is provided with mounting teeth that are adapted to the mounting rail; the opening on the bottom surface of the mounting groove is an oblong hole.

2. A railway bridge pedestrian slab assembly according to claim 1, characterized in that, The convex connecting block and the concave connecting groove are connected by a wedge shape.

3. A railway bridge pedestrian slab assembly according to claim 2, characterized in that, The convex connecting block and the concave connecting groove, the upper connecting block and the lower connecting block, and the mounting groove and the rack buckle are all connected by fasteners; The convex connecting block, the concave connecting groove, the upper connecting block, and the lower connecting block are all provided with connecting holes that are compatible with the fastener; The bottom surface of the mounting groove is provided with several openings that are compatible with the fastener, and the top surface of the rack buckle is provided with mounting holes that are compatible with the fastener.

4. A railway bridge pedestrian slab assembly according to claim 1, characterized in that, Two longitudinal cutting grooves are provided on the top surface of the walking board unit at the position corresponding to the mounting groove, and the width of the elongated hole is not greater than the distance between the two cutting grooves.

5. A railway bridge pedestrian slab assembly according to claim 3, characterized in that, The top surface of the upper end of the rack buckle is provided with a boss, and the height of the boss is less than the height of the mounting rail.

6. A railway bridge pedestrian slab assembly according to claim 1, characterized in that, The upper surface of the lower end of the rack buckle is provided with a concave-convex structure.

7. A railway bridge pedestrian slab assembly according to claim 1, characterized in that, It also includes railing fixing buckles; The railing fixing buckle includes a claw and a claw mounting base, and the claw mounting base is connected to the walking board.

8. A railway bridge pedestrian slab assembly according to claim 7, characterized in that, The gripper mounting base is provided with a slide rail, and the gripper is provided with a slide groove, the slide rail being adapted to the slide groove.

9. A railway bridge pedestrian slab assembly according to claim 7, characterized in that, The inner surface of the gripper is provided with a reverse tooth-like structure.

10. A railway bridge pedestrian slab assembly according to claim 3, characterized in that, The fasteners include anti-loosening bolts, which are hexagonal pan head bolts; the connecting holes of the convex connecting block and the lower connecting block, and the mounting holes of the rack and pinion, are all fitted with nuts that are compatible with the anti-loosening bolts.

11. A railway bridge pedestrian slab assembly according to claim 1, characterized in that, The top surface of the walking board unit is evenly covered with concave and convex textures.

12. A railway bridge pedestrian slab assembly according to claim 4, characterized in that, A transverse cutting groove is also provided on the top surface of the walking board unit.

13. A railway bridge pedestrian slab assembly according to claim 1, characterized in that, Several windproof grooves are provided on both sides of the walking board unit, and the windproof grooves of two adjacent walking board units are enclosed to form a windproof hole.

14. A railway bridge pedestrian slab assembly according to claim 1, characterized in that, The walking board unit is made of SMC composite material or DMC composite material.

15. A railway bridge pedestrian slab assembly according to claim 1, characterized in that, The dimensions of the walking board unit are: length × width × height = 3000mm × 300mm × 70mm or 3000mm × 250mm × 70mm or 3000mm × 150mm × 70mm.

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