Bridge deck manhole protection device

Abstract

The utility model discloses a bridge deck manhole protection device, two groups of symmetrical first guardrails and two groups of symmetrical second guardrails form a rectangular frame through connecting pieces, each first guardrail comprises a first vertical rod and a second vertical rod which are arranged on two sides, one side of each first vertical rod is fixedly connected with an upper sleeve rod, a lower sleeve rod and an auxiliary rod, the auxiliary rod is located between the upper sleeve rod and the lower sleeve rod, and positioning pieces are installed on the surfaces of the sleeve rods. An upper first rack, a lower first rack and a sliding rod are fixedly connected to the side, close to the first vertical rod, of the second vertical rod, and the sliding rod is located between the upper first rack and the lower first rack. The upper sleeve rod and the lower sleeve rod are movably connected with the corresponding upper first rack and the corresponding lower first rack respectively. And the auxiliary rod is sleeved on the sliding rod. By adjusting the positions of the sleeve rod, the rack, the auxiliary rod and the sliding rod, the protection range of the protection device can be adjusted, the protection range is reduced for a small hole, and the occupied space of the protection device can be saved.

Description

Technical Field

[0001] The utility model relates to the field of safety protection, in particular to a protection device for bridge deck manholes. Background Art

[0002] For the holes on the bridge deck, generally, protective covers or protective fences are used for protection to prevent people from falling.

[0003] For the protective cover, an ordinary cover is a flat plate. The cover covers the hole, and a rope is used to surround it for reminder. Since the holes have different sizes, different sizes of covers are needed to fit different sizes of holes. As an improvement, some covers have an adjustment function. For example, a kind of adjustable hole protection device disclosed in CN 221590510 U includes a support skeleton fixed on the floor slab around the hole or other reliable supports, a bearing space is arranged on the support skeleton; an adjusting device is arranged on both sides of the support skeleton, and the adjusting device can adjust the size of the bearing space; a protective template is arranged in the bearing space and can isolate and protect the hole. This kind of adjustable hole protection device can be suitable for the protection of holes of various sizes by setting a support skeleton with an adjustable bearing space size.

[0004] Regarding the protective fence, it is generally a square integral structure formed by welding. When in use, it is directly moved to the hole to surround the hole area, allowing people to bypass the fence to prevent people from falling into the hole. However, since the size of the welded protective fence cannot be changed, and the holes have different sizes, for some smaller holes, the overly large protective railing will occupy a large amount of space on the bridge deck, affecting the passage of normal operating personnel and vehicles.

[0005] The Chinese patent document CN 213774813 U discloses a protective fence for holes in building engineering structures. The protective fence for holes in building engineering structures includes a frame mechanism and a clamping mechanism. The frame mechanism includes a rectangular frame, a first connection component and a second connection component. The first connection component includes a first connecting rod and a first stop block, and the second connection component includes a second connecting rod and a second stop block. The first connecting rod is connected to one side of the rectangular frame, and the first connecting rod is arranged in two symmetrically distributed. This protective fence can achieve the purpose of adjusting the protection area size, but in some cases, a frame-shaped protective fence is required, and four groups of this protective fence need to be spliced for use. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a protection device for bridge deck manholes that can adapt to holes of different sizes and whose size is adjustable.

[0007] The technical solution for achieving the purpose of the present utility model is a bridge deck manhole protection device, which includes a first guardrail and a second guardrail. Two groups of symmetric first guardrails and two groups of symmetric second guardrails form a rectangular frame through connecting pieces, and the structures of the first guardrail and the second guardrail are the same; the first guardrail includes first vertical rods and second vertical rods on both sides. On one side of the first vertical rod, two upper and lower sleeve rods and an auxiliary rod are fixedly connected. The auxiliary rod is located between the upper and lower sleeve rods, and a positioning member is installed on the surface of the sleeve rod.

[0008] On the side of the second vertical rod close to the first vertical rod, two upper and lower first racks and a sliding rod are fixedly connected. The sliding rod is located between the upper and lower first racks.

[0009] The upper and lower sleeve rods are respectively movably connected to the corresponding upper and lower first racks; the auxiliary rod is sleeved on the sliding rod.

[0010] A groove is opened at the top of the sleeve rod, and the first rack is sleeved inside the sleeve rod.

[0011] The positioning member includes a fixed seat fixed on the surface of the sleeve rod. A second rack is movably connected inside the fixed seat, and the second rack meshes with the first rack.

[0012] Both ends of the second rack are fixedly connected with extension plates. Chute grooves are opened on both sides of the fixed seat, and limiting blocks are fixedly connected inside the chute grooves.

[0013] Limiting grooves are opened on both sides of the extension plate. The limiting grooves are located on the surface of the limiting block and are movably connected with it.

[0014] Furthermore, springs are provided on both sides of the fixed seat at the bottom of the extension plate. Both ends of the spring are respectively fixedly connected with the extension plate and the sleeve rod, and a damper is provided inside the spring.

[0015] A positioning hole is opened inside the fixed seat. A positioning block is movably sleeved inside the positioning hole. One end of the positioning block is fixedly connected with a U-shaped rod. There are two groups of positioning blocks, which are fixedly connected through the U-shaped rod. One end of the positioning block is located on the top of the extension plate and is movably connected with it.

[0016] Preferably, a reflective member is also provided in front of the first vertical rod and the second vertical rod.

[0017] Preferably, reflective strips are installed on the sides of the sleeve rod, the auxiliary rod, the first rack and the sliding rod facing the outside.

[0018] The distance between the upper sleeve rod and the uppermost auxiliary rod is sufficient for people to climb over. If the overall height of the protection device is not high, construction workers can also directly step over it.

[0019] The present utility model has positive effects:

[0020] By adjusting the positions of the adjusting sleeve rod and the rack, as well as the auxiliary rod and the sliding rod, the protection range of the utility model can be adjusted. For smaller holes, the protection range can be reduced, saving the floor space occupied by the protection device.

[0021] The protection device of the utility model is provided with a reflective member, which can make the guardrail more eye-catching and improve the safety prompt effect. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of the bridge deck of the utility model.

[0023] Figure 2 is Figure 1 the overall exploded structure diagram of.

[0024] Figure 3 It is a schematic diagram of the exploded structure of the first guardrail.

[0025] Figure 4 is Figure 3 the enlarged structure diagram of part A of.

[0026] Figure 5 It is an enlarged schematic diagram of the exploded structure of the positioning member.

[0027] Figure 6 It is an enlarged schematic diagram of the second rack structure.

[0028] The markings in the above-mentioned drawings are as follows:

[0029] The first guardrail 1, the connecting column 11, the second guardrail 2, the first vertical rod 31, the sleeve rod 32, the auxiliary rod 33, the groove 331, the second vertical rod 34, the first rack 35, the sliding rod 36, the positioning member 37, the fixed seat 371, the second rack 372, the extension plate 373, the spring 3731, the chute 374, the limit block 375, the limit groove 376, the positioning hole 377, the positioning block 378, the U-shaped rod 379, the reflective member 4, the mounting plate 41, the reflective plate 42, the bolt 43, the reflective strip 44. Detailed Description of the Invention

[0030] The following are some of the multiple possible embodiments of the present utility model, aiming to provide a basic understanding of the present utility model, and not aiming to identify the key or decisive elements of the present utility model or limit the scope to be protected. It is easy to understand that according to the technical solution of the present utility model, without changing the substantial spirit of the present utility model, those of ordinary skill in the art can propose other interchangeable implementation manners. Therefore, the following specific embodiments are only illustrative descriptions of the technical solution of the present utility model, and should not be regarded as all of the present utility model or regarded as a limitation or restriction on the technical solution of the present utility model. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indication also changes accordingly.

[0031] (Embodiment 1)

[0032] See Figures 1 to Figure 6 , the bridge deck manhole protection device of this embodiment includes a first guardrail 1, connecting columns 11 fixed on both sides of the first guardrail 1, and a second guardrail 2 fixed at the other ends of the connecting columns 11. There are two groups of the first guardrail 1 and the second guardrail 2 respectively and they are symmetric to each other, and the first guardrail 1 and the second guardrail 2 form a square, and the first guardrail 1 and the second guardrail 2 are fixedly connected through the connecting columns 11.

[0033] The first guardrail 1 and the second guardrail 2 have the same structure, and only the first guardrail 1 will be described here. The first guardrail 1 includes a first vertical rod 31 and a second vertical rod 34. A sleeve rod 32 and an auxiliary rod 33 are fixedly connected to one side of the first vertical rod 31. The auxiliary rod 33 is located inside the sleeve rod 32. There are two groups of the auxiliary rod 33 and the sleeve rod 32 respectively. The sleeve rods 32 are symmetric to each other. A positioning member 37 is installed on the surface of the sleeve rod 32. A reflective member 4 is installed on one side of the first guardrail 1 and the second guardrail 2.

[0034] The space between the upper sleeve rod 32 and the uppermost auxiliary rod 33 is relatively large, allowing construction workers to climb in.

[0035] On one side of the second vertical rod 34 and close to the first vertical rod 31, a first rack 35 and a slide rod 36 are fixedly connected. There are two groups of the first rack 35 and the slide rod 36 respectively. The first racks 35 are symmetric to each other. The sleeve rod 32 and the first rack 35, and the auxiliary rod 33 and the slide rod 36 are on the same horizontal plane, so as to facilitate adjusting the distance between the first vertical rod 31 and the second vertical rod 34, and further achieving the purpose of adjusting the coverage range of the guardrail.

[0036] A groove 331 is formed at the top of the sleeve rod 32. The first rack 35 is located inside the sleeve rod 32 and is movably sleeved thereon. The sliding rod 36 is located inside the auxiliary rod 33 and is movably sleeved thereon. In this way, the stability during the adjustment of the first vertical rod 31 and the second vertical rod 34 can be ensured. At the same time, the surface of the first rack 35 is located inside the groove 331 to facilitate the positioning operation of the positioning member 37. Meanwhile, the arrangement of the auxiliary rod 33 and the sliding rod 36 can increase the stability of the first vertical rod 31 and the second vertical rod 34.

[0037] The positioning member 37 includes a fixed seat 371 fixed on the surface of the sleeve rod 32. A second rack 372 is movably connected inside the fixed seat 371. The second rack 372 meshes with the first rack 35 through the groove 331. Meanwhile, the inside of the fixed seat 371 communicates with the groove 331 to facilitate the positioning of the first rack 35 and thus achieve the locking purpose.

[0038] Extension plates 373 are fixedly connected to both ends of the second rack 372. Sliding grooves 374 are formed on both sides of the fixed seat 371. A limiting block 375 is fixedly connected inside the sliding groove 374. The extension plate 373 is located inside the sliding groove 374 and is movably connected thereto. The extension plate 373 extends to the outside of the fixed seat 371 through the sliding groove 374, which can make the second rack 372 more stable during lifting and avoid jamming.

[0039] Limiting grooves 376 are formed on both sides of the extension plate 373. The limiting grooves 376 are located on the surface of the limiting block 375 and are movably connected thereto, which can ensure the stability of the second rack 372 during lifting.

[0040] Springs 3731 are provided at the bottom of the extension plate 373 and on both sides of the fixed seat 371. Both ends of the spring 3731 are fixedly connected to the extension plate 373 and the sleeve rod 32 respectively. A damping is provided inside the spring 3731. The spring 3731 can make the second rack 372 have elasticity through the extension plate 373 to facilitate the meshing with the first rack 35 or not.

[0041] A positioning hole 377 is formed inside the fixed seat 371. A positioning block 378 is movably sleeved inside the positioning hole 377. One end of the positioning block 378 is fixedly connected with a U-shaped rod 379. There are two groups of positioning blocks 378, which are fixedly connected through the U-shaped rod 379. One end of the positioning block 378 is located on the top of the extension plate 373 and is movably connected thereto. There are two groups of limiting blocks 375 inside one group of limiting grooves 376 and they are symmetric to each other. The positioning block 378 is located inside the two groups of limiting blocks 375 and there is no interference between them. The extension plate 373 is limited by the positioning block 378, which can make the second rack 372 mesh with the first rack 35, and thus achieve the purpose of locking the first vertical rod 31 and the second vertical rod 34, and further adjust the covering range inside the guardrail.

[0042] The reflective member 4 includes a mounting plate 41 fixed to one side of the first vertical rod 31. A reflector 42 is mounted on the surface of the mounting plate 41. Both ends of the reflector 42 are movably sleeved with bolts 43. One end of the bolt 43 penetrates through the reflector 42 and extends into the interior of the mounting plate 41 and is threadedly connected thereto. The reflector 42 is connected to the mounting plate 41 through the bolts 43, so as to achieve the purpose of quickly disassembling and replacing the reflector 42, thereby saving time and improving work efficiency. At the same time, the mounting plate 41 is located at the connection of the first guardrail 1 and the second guardrail 2, that is, on one side of the connecting column 11.

[0043] Reflective strips 44 are mounted on one side of the sleeve rod 32, the auxiliary rod 33, the first rack 35 and the slide rod 36. The reflective strips 44 are arranged at equal intervals. The arrangement of the reflective strips 44 on the surface of the first rack 35 and the slide rod 36 can prevent people from ignoring the existence of the two, thereby increasing vigilance.

[0044] During use, determine the diameter of the hole. Then, by pushing the first guardrail 1 and the second guardrail 2, when pushing the second guardrail 2, the second vertical rod 34 in the first guardrail 1 will push the first rack 35 and the slide rod 36 towards the sleeve rod 32 and the auxiliary rod 33 due to the pressure and move inside the sleeve rod 32 and the auxiliary rod 33, so that the second vertical rod 34 slowly approaches the first vertical rod 31.

[0045] When the distance between the two reaches a small part larger than the diameter of the hole, the second rack 372 can be pressed to drive the extension plate 373 to descend along the inside of the chute 374 until it meshes with the first rack 35 through the groove 331, and the positioning block 378 is inserted into the positioning hole 377, and the positioning block 378 is located at the top of the extension plate 373 to complete the positioning of the second vertical rod 34. Similarly, when pushing the first guardrail 1, the diameter of the other direction of the guardrail can be changed, so that holes of different specifications can be covered.

[0046] Through the settings of the reflector 42 and the reflective strips 44, the guardrail can be made more eye-catching; at the same time, when the reflector 42 is damaged, the bolts 43 can be directly rotated to disassemble and replace it, so as to achieve the purpose of quickly replacing the reflector 42. In addition, the arrangement of the reflective strips 44 on one side of the first rack 35 and the slide rod 36 can prevent people from ignoring the second vertical rod 34, and at the same time, as Figure 3 shown, the setting of the reflective strips 44 will not affect the operation of adjusting the size of the guardrail.

Claims

1. A bridge deck manhole protection device, comprising a first guardrail (1) and a second guardrail (2), wherein two groups of symmetric first guardrails (1) and two groups of symmetric second guardrails (2) form a rectangular frame through connecting pieces, and it is characterized in that: The structures of the first guardrail (1) and the second guardrail (2) are the same; The first guardrail (1) includes first vertical rods (31) and second vertical rods (34) on both sides. On one side of the first vertical rod (31), two upper and lower sleeve rods (32) and an auxiliary rod (33) are fixedly connected. The auxiliary rod (33) is located between the two upper and lower sleeve rods (32). A positioning member (37) is installed on the surface of the sleeve rod (32); On the side of the second vertical rod (34) close to the first vertical rod (31), two upper and lower first racks (35) and a sliding rod (36) are fixedly connected. The sliding rod (36) is located between the two upper and lower first racks (35); The two upper and lower sleeve rods (32) are respectively movably connected to the corresponding two upper and lower first racks (35); the auxiliary rod (33) is sleeved on the sliding rod (36).

2. The bridge deck manhole protection device according to claim 1, characterized in that: A groove (331) is opened at the top of the sleeve rod (32), and the first rack (35) is sleeved inside the sleeve rod (32).

3. The bridge deck manhole protection device according to claim 2, characterized in that: The positioning member (37) includes a fixed seat (371) fixed on the surface of the sleeve rod (32). A second rack (372) is movably connected inside the fixed seat (371), and the second rack (372) meshes with the first rack (35).

4. The bridge deck manhole protection device according to claim 3, characterized in that: Both ends of the second rack (372) are fixedly connected with extension plates (373). Chute grooves (374) are opened on both sides of the fixed seat (371), and a limiting block (375) is fixedly connected inside the chute grooves (374); Limiting grooves (376) are opened on both sides of the extension plate (373). The limiting grooves (376) are located on the surface of the limiting block (375) and are movably connected thereto.

5. The bridge deck manhole protection device according to claim 4, wherein: Springs (3731) are provided at the bottom of the extension plate (373) and on both sides of the fixed seat (371). Both ends of the springs (3731) are respectively fixedly connected with the extension plate (373) and the sleeve rod (32). A damping is provided inside the springs (3731).

6. The bridge deck manhole protection device according to claim 5, wherein: A positioning hole (377) is opened inside the fixed seat (371). A positioning block (378) is movably sleeved inside the positioning hole (377). One end of the positioning block (378) is fixedly connected with a U-shaped rod (379). There are two groups of positioning blocks (378), which are fixedly connected through the U-shaped rod (379). One end of the positioning block (378) is located on the top of the extension plate (373) and is movably connected thereto.

7. The bridge deck manhole protection device according to claim 1, characterized in that: A reflective member (4) is also provided in front of the first vertical rod (31) and the second vertical rod (34).

8. The bridge deck manhole protection device according to claim 1, characterized in that: Reflective strips (44) are installed on the outer sides of the sleeve rod (32), the auxiliary rod (33), the first rack (35) and the sliding rod (36).

9. The bridge deck manhole protection device according to claim 1, characterized in that: The distance between the upper sleeve rod (32) and the uppermost auxiliary rod (33) is large enough for a person to climb over.

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