Safety protection devices for walking during bridge superstructure construction

Abstract

This utility model proposes a safety protection device for walking during bridge superstructure construction, belonging to the field of bridge construction technology. The device includes two movable trolleys mounted above the bridge deck, each trolley equipped with a winch connected to a steel wire rope. A suspended platform is connected to the bottom of the steel wire rope and positioned below the bridge deck. Reinforcing cages for guardrail construction are located on both sides of the bridge deck. The device also includes a stabilizing mechanism fitted onto the steel wire rope and a fixing mechanism connected to the rear end of the trolleys. This utility model, applied during bridge structure construction, solves the problem of wear and tear on the steel wire rope and bridge deck caused by gaps between them and weather conditions such as wind. It also improves the overall stability of the suspended platform, enhances the convenience of trolley fixing, and facilitates trolley movement.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, specifically to a safety protection device for walking during bridge superstructure construction. Background Technology

[0002] A certain project involves extensive construction on provincial and local county roads. During bridge superstructure construction, certain sections lack the conditions for erecting protective scaffolding, and such erection would consume construction time and incur high costs. Considering construction efficiency, protective effectiveness, and cost-effectiveness, a plan is proposed to upgrade and modify the existing guardrail construction protection equipment. The main idea is to draw inspiration from the design of bridge maintenance aerial work platforms, mechanizing the existing guardrail construction protection facilities to enable flexible movement and hydraulic or mechanical deployment of the work platform. This will allow for the protection of the bottom of the box girder from above during bridge superstructure construction.

[0003] A search revealed that existing technologies, such as the bridge maintenance suspended platform disclosed in patent CN 109208471 A, although capable of protecting the bottom of the beam, still have the following drawbacks;

[0004] First, the ropes are some distance from the side of the bridge deck. Affected by weather and wind, the ropes sway and rub against the side of the bridge deck, causing rope wear and affecting the overall stability of the suspended platform structure. Second, using counterweights for fixation requires purchasing or fabricating them, increasing material costs. Furthermore, moving the counterweights directly to the construction position is difficult, requiring manual loading and unloading, which is time-consuming and labor-intensive. Utility Model Content

[0005] To address the problems existing in the background technology, this utility model proposes a safety protection device for walking during bridge superstructure construction. This utility model effectively solves the problems of friction between the wire rope and the bridge deck, and high material costs during fixing. By stabilizing the relative position of the wire rope and the bridge deck through a stabilizing mechanism, friction between the wire rope and the bridge deck is prevented, resulting in greater structural stability and safety. Simultaneously, it extends the service life of the wire rope, improving construction quality and efficiency.

[0006] The technical solution to the technical problem solved by this utility model is as follows:

[0007] A bridge superstructure construction walking safety protection device includes two movable trolleys, which are set above the bridge deck. A winch is installed on the trolley, and a wire rope is connected to the winch. The bottom of the wire rope is connected to a suspended basket, which is set below the bridge deck. Reinforcing cages for making guardrails are set on both sides of the bridge deck.

[0008] It also includes a stabilizing mechanism, which includes a sleeve fitted onto the wire rope, the sleeve being slidably connected to the wire rope, and a slot on the sleeve for the wire rope to pass through; the front end of a crossbar is connected to the outer wall of the sleeve, the rear end of the crossbar is connected to a first fixing plate, and a threaded rod is threadedly connected to the first fixing plate; a top plate is provided inside the reinforcing cage, the top plate being detachably connected to the reinforcing cage, and the end of the threaded rod abutting against the surface of the top plate; a limiting rod is detachably connected to the crossbar, and the limiting rod abutting against the side of the bridge deck.

[0009] Preferably, the trolley includes a chassis, with rollers connected to the bottom of the chassis, a fixed frame connected to the rear end of the chassis, a winch connected to the fixed frame, a vertical rod connected to the front end of the chassis, a support rod connected to the vertical rod, and pulley blocks respectively provided on the vertical rod and the support rod, with wire ropes laid on the pulley blocks.

[0010] Preferably, a first reinforcing rod is connected between the vertical rod and the chassis, diagonal braces are connected to both sides of the chassis, a crossbeam is connected to the diagonal braces, a support rod is connected to the crossbeam, and a second reinforcing rod is connected between the vertical rod and the support rod.

[0011] Preferably, the crossbar has a through hole, and the limiting rod can be inserted into the through hole.

[0012] Preferably, the limiting rod is T-shaped.

[0013] Preferably, limiting blocks are provided on the left and right sides of the top plate, a guide tube is connected to one side of the top plate, and one end of the threaded rod is inserted into the guide tube.

[0014] Preferably, a fixing mechanism is provided below the fixing frame; the fixing mechanism includes a second fixing plate, a vertical plate and a horizontal plate; the bridge deck is provided with a number of U-shaped ribs spaced apart, the horizontal plate is detachably connected between two adjacent U-shaped ribs, the lower end of the vertical plate is connected to the horizontal plate, the upper end of the vertical plate is connected to the second fixing plate, and the second fixing plate is bolted to the fixing frame.

[0015] Preferably, the horizontal plate has a groove, and the U-shaped rib is engaged in the groove.

[0016] Preferably, the horizontal plate is provided with threaded holes, and the threaded holes are connected to set screws, with the bottom of the set screws supporting the bridge deck.

[0017] Preferably, the suspended basket is surrounded by guardrails.

[0018] The above technical solution has the following advantages or beneficial effects:

[0019] 1. By using a stabilizing mechanism, direct friction between the wire rope and the concrete structure of the bridge deck is avoided, limiting the swaying of the wire rope, improving the overall stability of the suspended platform, and preventing wear on the wire rope.

[0020] 2. By using the U-shaped ribs pre-installed on the bridge deck as fixed support points, and through the cooperation of the U-shaped ribs and the fixing mechanism, the trolley can be stably fixed. There is no need to purchase and manufacture counterweights, which reduces material costs. It is also detachable, making it more convenient to push the trolley forward and solving the problem of difficult movement and disassembly of the current trolley. Attached Figure Description

[0021] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0022] Figure 1 This is a perspective view of the present invention.

[0023] Figure 2 This is a front view of the present invention.

[0024] Figure 3 This is a three-dimensional view of the stabilizing mechanism in this utility model.

[0025] Figure 4 This is a front view of the stabilizing mechanism in this utility model.

[0026] Figure 5 It is a 3D view of a single trolley structure.

[0027] Figure 6 This is a three-dimensional view of the fixing mechanism in this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Trolley; 2. Bridge deck; 3. Winch; 4. Wire rope; 5. Suspended basket; 6. Reinforcing cage; 7. Sleeve; 8. Horizontal bar; 9. First fixing plate; 10. Threaded rod; 11. Top plate; 12. Limiting rod; 13. Chassis; 14. Roller; 15. Vertical bar; 16. First reinforcing bar; 17. Diagonal brace; 18. Crossbeam; 19. Second reinforcing bar; 20. Support rod; 21. Pulley block; 22. Fixing frame; 23. Guide tube; 24. Second fixing plate; 25. Vertical plate; 26. Horizontal plate; 27. U-shaped rib; 28. Groove; 29. ​​Top screw. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] like Figure 1 - Figure 6As shown in the figure, this embodiment proposes a safety protection device for walking during the construction of the bridge superstructure. The construction platform mainly includes two movable trolleys 1, which are set above the bridge deck 2. A winch 3 is installed on the trolley 1, and the winch 3 is connected to a steel wire rope 4. The steel wire rope 4 is connected to a suspended basket 5, which is set below the bridge deck 2. The device also includes a stabilizing mechanism. The stabilizing mechanism solves the problem of friction between the steel wire rope 4 and the bridge deck 2 by stabilizing the relative position of the steel wire rope 4 and the bridge deck 2, thereby improving the stability and safety of the device.

[0032] In some embodiments, the stabilizing mechanism includes a sleeve 7 fitted onto the wire rope 4. The sleeve 7 is slidably connected to the wire rope 4. A slot is provided on the sleeve 7 for the wire rope 4 to pass through. The wire rope 4 can slide inside the sleeve 7 by passing through the slot, and the sleeve 7 also serves to limit and protect the wire rope 4.

[0033] In some embodiments, the outer wall of the sleeve 7 is connected to the front end of the crossbar 8 by welding to ensure the reliability of the connection; the rear end of the crossbar 8 is connected to the first fixing plate 9, which can also be connected by welding; the first fixing plate 9 is threadedly connected to the threaded rod 10, and the first fixing plate 9 is provided with a threaded hole adapted to the threaded rod 10, and the extension length can be adjusted by rotating the threaded rod 10.

[0034] In some embodiments, a top plate 11 is provided inside the reinforcing cage 6, and the top plate 11 is close to the reinforcing cage 6; one end of the threaded rod 10 is supported on the surface of the top plate 11, and the top plate 11 is tightened by adjusting the extension length of the threaded rod 10, thereby fixing the stabilizing mechanism and stabilizing the position of the wire rope 4.

[0035] In some embodiments, limiting blocks are provided on both sides of the top plate 11. The limiting blocks can be connected to the top plate 11 by welding. The limiting blocks can limit the position of the top plate 11 on the reinforcing cage 6. A guide tube 23 is connected to one side of the top plate 11. The guide tube 23 can be connected to the top plate 11 by welding. One end of the threaded rod 10 is inserted into the guide tube 23. The guide tube 23 can guide the threaded rod 10 and prevent the threaded rod 10 from shifting during the supporting process. A notch is provided at the bottom of the top plate 11. The crossbar 8 can pass through the notch and extend to the outside of the reinforcing cage 6. The limiting rod 12 can also be inserted through this notch, which facilitates installation and disassembly.

[0036] In some embodiments, the crossbar 8 is provided with a through hole, the size of which is adapted to the limiting rod 12, and can be installed and disassembled by plugging in; the limiting rod 12 is T-shaped, with its lower end inserted into the through hole and close to the bridge panel 2, and its upper end close to the crossbar 8, which can play a good limiting role.

[0037] During installation, first move the trolley 1 to the construction position, place the crossbar 8 between the two vertical bars of the reinforcing cage 6, move the position of the crossbar 8 so that the sleeve 7 is fitted onto the wire rope 4, insert the limiting rod 12 into the through hole on the crossbar 8, push the crossbar 8 forward so that the limiting rod 12 is on the outside of the bridge deck 2, place the top plate 11 on the inside of the reinforcing cage 6, and the crossbar 8 is locked in the notch of the top plate 11. Screw the threaded rod 10 into the threaded hole on the first fixing plate 9 so that the threaded rod 10 is supported in the guide tube 23 on the top plate 11. Screw until it can no longer be rotated to complete the installation.

[0038] In some embodiments, the trolley 1 includes a chassis 13, with rollers 14 connected to the bottom of the chassis 13. The connection method can be welding. The rollers 14 can be casters and have a braking device to facilitate the movement and fixation of the trolley 1. The rear end of the chassis 13 is connected to a fixing frame 22, which can also be connected by welding. The fixing frame 22 is connected to a winch 3, which can be bolted to facilitate the maintenance and replacement of the winch 3.

[0039] In some embodiments, the front end of the chassis 13 is connected to a vertical rod 15, and the vertical rod 15 is connected to a support rod 20. The connection can be made by welding to ensure the reliability of the connection. Pulley blocks 21 are respectively provided on the vertical rod 15 and the support rod 20. The wire rope 4 is laid on the pulley block 21. The pulley block 21 can change the direction of force on the wire rope 4, so that the winch 3 drives the basket 5 to rise and fall through the wire rope 4.

[0040] In some embodiments, a first reinforcing rod 16 is connected between the vertical rod 15 and the chassis 13, diagonal braces 17 are connected to both sides of the chassis 13, a crossbeam 18 is connected to the diagonal brace 17, a support rod 20 is connected to the crossbeam 18, and a second reinforcing rod 19 is connected between the vertical rod 15 and the support rod 20. All of the above connections can be made by welding, which further enhances the stability and strength of the overall structure of the trolley 1.

[0041] In some embodiments, a fixing mechanism is provided below the fixing frame 22. The fixing mechanism can firmly fix the trolley 1 to the bridge panel 2. The fixing mechanism includes a second fixing plate 24, a vertical plate 25 and a horizontal plate 26. The bridge panel 2 is provided with a number of U-shaped ribs 27 arranged at intervals. The horizontal plate 26 is provided with a groove 28 and a threaded hole adapted to the set screw 29. By rotating the set screw 29, the horizontal plate 26 is pressed upward against the U-shaped ribs 27. The U-shaped ribs 27 are locked in the groove 28. The size of the groove 28 is adapted to the U-shaped ribs 27. The horizontal plate 26 and the U-shaped ribs 27 are connected by a snap-fit ​​method, which facilitates installation and disassembly and improves the stability of the device.

[0042] In some embodiments, the lower end of the vertical plate 25 is connected to the horizontal plate 26, and the upper end of the vertical plate 25 is connected to the second fixing plate 24 by welding. The second fixing plate 24 is bolted to the fixing frame 22, and corresponding bolt holes are provided on the second fixing plate 24 and the fixing frame 22 respectively. The two are fixed by bolts to ensure that the fixing mechanism is firmly connected to the trolley 1.

[0043] During installation, first move the trolley 1 to the construction position, insert the horizontal plate 26 between two adjacent U-shaped ribs 27, so that the U-shaped ribs 27 are locked in the groove of the horizontal plate 26, adjust the position of the horizontal plate 26 so that the second fixing plate 24 is aligned with the through hole of the fixing frame 22, insert the bolts into them and tighten them to fix them, screw the set screw 29 into the threaded hole of the horizontal plate 26 so that the horizontal plate 26 pushes the U-shaped ribs 27 upward to complete the installation.

[0044] In some embodiments, the suspended platform 5 is surrounded by guardrails, which can be connected to the suspended platform 5 by welding, effectively ensuring the safety of construction personnel inside the suspended platform 5.

[0045] In summary, this device has a stable structure, high safety, and is easy to operate. It can be quickly installed or disassembled without complicated tools, preventing the problem of steel wire rope friction with the bridge deck during construction. It is also easy to move, eliminating the need for manual loading and unloading of counterweights, thus improving construction efficiency.

[0046] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0047] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. A safety protection device for walking during construction of the superstructure of a bridge, comprising two movable trolleys (1), the trolleys (1) being positioned above the bridge deck (2), a winch (3) being mounted on the trolleys (1), a wire rope (4) being connected to the winch (3), a suspended basket (5) being connected to the bottom of the wire rope (4), the suspended basket (5) being positioned below the bridge deck (2), and steel cages (6) for constructing guardrails being provided on both sides of the bridge deck (2), characterized in that: It also includes a stabilizing mechanism, which includes a sleeve (7) fitted on the wire rope (4), the sleeve (7) being slidably connected to the wire rope (4), and a slot on the sleeve (7) for the wire rope (4) to pass through; the outer wall of the sleeve (7) is connected to the front end of the crossbar (8), the rear end of the crossbar (8) is connected to the first fixing plate (9), and a threaded rod (10) is threadedly connected to the first fixing plate (9); a top plate (11) is provided inside the steel cage (6), the top plate (11) is detachably connected to the steel cage (6), and the end of the threaded rod (10) is supported on the surface of the top plate (11); a limiting rod (12) is detachably connected to the crossbar (8), and the limiting rod (12) is supported on the side of the bridge deck (2).

2. The bridge superstructure construction travel safety guard according to claim 1, characterized in that, The trolley (1) includes a chassis (13), with rollers (14) connected to the bottom of the chassis (13), a fixed frame (22) connected to the rear end of the chassis (13), a winch (3) connected to the fixed frame (22), a vertical rod (15) connected to the front end of the chassis (13), a support rod (20) connected to the vertical rod (15), and pulley blocks (21) respectively provided on the vertical rod (15) and the support rod (20), with a wire rope (4) laid on the pulley blocks.

3. The bridge superstructure construction travel safety guard of claim 2, wherein, The first reinforcing rod (16) is connected between the vertical rod (15) and the chassis (13). The diagonal braces (17) are connected to both sides of the chassis (13). The crossbeam (18) is connected to the diagonal brace (17). The support rod (20) is connected to the crossbeam (18). The second reinforcing rod (19) is connected between the vertical rod (15) and the support rod (20).

4. The bridge superstructure construction walkway safety guard of claim 1, wherein, A through hole is provided on the crossbar (8), and the limiting rod (12) can be inserted into the through hole.

5. The bridge superstructure construction walkway safety guard of claim 1, wherein, The limit rod (12) is T-shaped.

6. The bridge superstructure construction walkway safety guard of claim 1, wherein, Limiting blocks are provided on the left and right sides of the top plate (11). One side of the top plate (11) is connected to the guide tube (23), and one end of the threaded rod (10) is inserted into the guide tube (23).

7. The bridge superstructure construction walkway safety guard of claim 3, wherein, A fixing mechanism is provided below the fixing frame (22); the fixing mechanism includes a second fixing plate (24), a vertical plate (25) and a horizontal plate (26); the bridge deck (2) is provided with a number of U-shaped ribs (27) spaced apart, and the horizontal plate (26) is detachably connected between two adjacent U-shaped ribs (27), the lower end of the vertical plate (25) is connected to the horizontal plate (26), the upper end of the vertical plate (25) is connected to the second fixing plate (24), and the second fixing plate (24) is bolted to the fixing frame (22).

8. The bridge superstructure construction walkway safety guard of claim 7, wherein, The horizontal plate (26) has a groove (28), and the U-shaped rib (27) is inserted into the groove (28).

9. The bridge superstructure construction walkway safety guard of claim 7, wherein, The horizontal plate (26) is provided with a threaded hole, and the threaded hole is connected to the set screw (29). The bottom of the set screw (29) is supported on the bridge panel (2).

10. The bridge superstructure construction walkway safety guard of claim 1, wherein The hanging basket (5) is surrounded by railings.

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