Tunnel light transition zone top opening anti-falling device

Abstract

The utility model relates to the technical field of tunnel light transition zone structures, in particular to a tunnel light transition zone top opening anti-falling device which comprises a double-layer stacked anti-falling structure, and the anti-falling structure is installed on the top face of a side wall of a top opening of a tunnel light transition zone through a fixing piece and covers the range of the top opening. The anti-falling structure comprises a stainless steel woven mesh located on the upper layer and a stainless steel mesh located on the lower layer, wherein the mesh size of the stainless steel woven mesh is smaller than that of the stainless steel mesh. The utility model has the advantages that the operation period safety of the perforated structure is ensured while the light transmission effect of the light transition zone is not influenced; through the design of a double-layer anti-falling structure, the anti-falling effect is improved; and the design thought is simple, the construction step sequence is concise, the structural integrity is good, good innovativeness and application value are achieved, and the method is suitable for popularization.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel optical transition zone structure, specifically to a fall prevention device with an opening at the top of a tunnel optical transition zone. Background Technology

[0002] Currently, considering the needs of landscape and light transition in the open section of the tunnel, a light transition zone with openings can be set at the top of the open section after exiting the buried section. The concrete roof slab of the light transition zone needs to have openings of different sizes according to the needs of light transition, so that light can be introduced into the tunnel through these openings. At the same time, the area between the openings can be further planted with greenery to enhance the overall landscape of the tunnel.

[0003] However, openings at the top of the light transition zone pose certain safety hazards to tunnel operation, mainly in the following ways: ① Soil, gravel, and dead leaves from planting vegetation on the top may fall through the openings, affecting traffic safety; ② Pedestrians climbing or vegetation maintenance personnel may fall through the openings. Most existing opening designs lack protective measures, resulting in significant safety risks. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a fall arrest device for the top opening of the tunnel light transition zone. Through a double-layer fall arrest structure, it can prevent possible falls and solve the safety problems of falling rocks and personnel that may be caused by the top opening of the tunnel light transition zone.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A fall arrest device for a top opening in a tunnel light transition zone is characterized in that: the fall arrest device comprises a double-layered fall arrest structure, the fall arrest structure being installed on the top surface of the side wall of the top opening in the tunnel light transition zone by fasteners and covering the area of ​​the top opening; the fall arrest structure comprises a stainless steel woven mesh in the upper layer and a stainless steel mesh sheet in the lower layer, wherein the mesh size of the stainless steel woven mesh is smaller than the mesh size of the stainless steel mesh sheet.

[0007] The fall protection structure is fixedly connected to the top surface of the top opening side wall by stainless steel plate strips and expansion bolts, wherein the stainless steel plate strips are laid flat on the fall protection structure, and the expansion bolts pass through the stainless steel plate strips, the fall protection structure and the top opening side wall for fixing.

[0008] The wire diameter of the stainless steel woven mesh is smaller than that of the stainless steel mesh sheet.

[0009] The stainless steel woven mesh has a wire diameter of 1.5mm and a mesh size of 1.5cm × 1.5cm.

[0010] The stainless steel mesh has a wire diameter of 4mm and a mesh size of 15×15cm.

[0011] The expansion bolts used are M10 expansion bolts.

[0012] The advantages of this utility model are: it ensures the safety of the opening structure during operation without affecting the light transmission effect of the light transition zone; the double-layer anti-fall structure design improves the anti-fall effect; the design concept is simple, the construction steps are concise, the overall structure is good, and it has good innovation and application value, making it suitable for promotion. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0014] The features and other related features of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art:

[0015] like Figure 1 As shown in the figure, numbers 1-5 represent: expansion bolt 1, stainless steel plate strip 2, stainless steel woven mesh 3, stainless steel mesh sheet 4, and top opening side wall 5, respectively.

[0016] Example: Figure 1 As shown, the anti-fall device with a top opening in the tunnel light transition zone in this embodiment is designed for the top opening position of the tunnel light transition zone. The top opening position has a top opening sidewall 5, and the opening area is the area enclosed by the top opening sidewall 5.

[0017] Specifically, such as Figure 1 As shown, the fall protection device in this embodiment includes the fall protection structure, which comprises an upper layer of stainless steel woven mesh 3 and a lower layer of stainless steel mesh 4. The mesh size of the stainless steel woven mesh 3 is smaller than that of the stainless steel mesh 4, but the wire diameter of the stainless steel woven mesh 3 is smaller than that of the stainless steel mesh 4. In this way, the stainless steel woven mesh 3 in the upper and lower stacked fall protection structure, with its smaller mesh size and finer wire diameter, is mainly used to prevent falling rocks, soil, dead branches and leaves, etc., and to prevent objects from falling into the top opening. The stainless steel mesh 4, with its larger mesh size and thicker wire diameter, is mainly used to prevent falls, that is, to a certain extent, it strengthens the support of the upper stainless steel woven mesh 3, ensuring that the overall fall protection structure has a certain strength to resist the fall of heavier objects.

[0018] like Figure 1As shown, the fall arrestor structure is fixedly installed on the top surface of the top opening side wall 5 by expansion bolts 1 and stainless steel plate strips 2, covering the area of ​​the top opening to ensure all-round fall protection. Specifically, the stainless steel plate strips 2 are laid flat on the fall arrestor structure, and the expansion bolts 1 pass through the stainless steel plate strips 2, stainless steel woven mesh 3, and stainless steel mesh 4 to fix it to the top opening side wall 5.

[0019] This embodiment includes the following construction steps during construction:

[0020] 1) Select stainless steel woven mesh 3 and stainless steel mesh sheet 4 of appropriate size according to the opening range of the enclosed area of ​​the top opening side wall 5.

[0021] 2) Lay stainless steel mesh 4 flat within the opening area enclosed by the top opening side wall 5, and continue to lay the upper layer of stainless steel woven mesh 3 flat.

[0022] 3) Lay stainless steel strip 2 flat on the top surface of the side wall 5 with the top opening. The area covered by the stainless steel strip 2 should meet the structural strength requirements of the fall arrestor.

[0023] 4) Use expansion bolts 1 to fix the device to the top opening side wall 5. Several expansion bolts 1 are arranged at certain intervals along the circumference of the top opening side wall 5, generally preferably 30-50cm (the specific interval is determined by calculation). This completes the installation of the fall protection device.

[0024] In this embodiment, the wire diameter of the stainless steel woven mesh 3 is 1.5mm, and the mesh size is 1.5cm × 1.5cm.

[0025] The stainless steel mesh 4 has a wire diameter of 4mm and a mesh size of 15×15cm.

[0026] Expansion bolt 1 is an M10 expansion bolt.

[0027] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A tunnel optical transition zone top opening anti-falling device, characterized in that: The anti-falling device comprises double-layered stacked anti-falling structures, which are installed on the top surface of the top opening side wall of the tunnel light transition zone through fixing members and cover the range of the top opening; the anti-falling structures comprise a stainless steel woven mesh in the upper layer and a stainless steel mesh in the lower layer, wherein the mesh size of the stainless steel woven mesh is smaller than that of the stainless steel mesh.

2. The tunnel optical transition band top opening anti-falling device according to claim 1, characterized in that: The anti-falling structures are fixedly connected with the top surface of the top opening side wall through stainless steel plate strips and expansion bolts, wherein the stainless steel plate strips are laid on the anti-falling structures, and the expansion bolts pass through the stainless steel plate strips, the anti-falling structures and the top opening side wall.

3. The tunnel optical transition band top opening anti-falling device according to claim 2, characterized in that: The expansion bolts are M10 expansion bolts.

4. The tunnel optical transition band top opening anti-falling device according to claim 1, characterized in that: The wire diameter of the stainless steel woven mesh is smaller than that of the stainless steel mesh.

5. The tunnel optical transition band top opening anti-falling device according to claim 1, characterized in that: The wire diameter of the stainless steel woven mesh is 1.5 mm, and the mesh size is 1.5 cm x 1.5 cm.

6. The tunnel optical transition band top opening anti-falling device according to claim 1, characterized in that: The wire diameter of the stainless steel mesh is 4 mm, and the mesh size is 15 x 15 cm.

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