Crawling ladder structure for laying waterproof layer at tunnel open cut tunnel section

Abstract

The utility model discloses a tunnel open cut tunnel section waterproof layer laying ladder stand structure, which relates to the technical field of tunnel construction and comprises a construction frame, the cross section of the construction frame is of a semi-circular ring structure, and the lower ends of the two sides of the construction frame are respectively provided with a first ladder stand frame and a second ladder stand frame. Crawling ladder protection cages are arranged between the upper ends of the outer surfaces of the first crawling ladder frame and the second crawling ladder frame and the lower end of the construction frame, supporting pulleys are arranged on the lower surface of the construction frame, and limiting pulleys are arranged on the inner surfaces of the first crawling ladder frame and the second crawling ladder frame; the self-made crawling ladder has the advantages that the self-made crawling ladder is easy to manufacture, low in manufacturing cost, good in safety and the like, an operator can freely climb up and down the crawling ladder, and the crawling ladder can be easily moved to a designated place to continue construction after construction of an area is completed. And the construction efficiency is improved while the safety is ensured.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to a ladder structure for laying a waterproof layer in the open section of a tunnel. Background Technology

[0002] The open-cut section of a tunnel is a special part of tunnel engineering. It is a tunnel structure constructed using the cut-and-cover method at the tunnel entrance or in a road cut. The open-cut section is usually composed of structures such as arches, sidewalls, and inverts. Its functions are significant. On the one hand, it protects the stability of the slopes at the tunnel entrance and the invert, preventing hazards such as landslides and rockfalls. On the other hand, it effectively connects the tunnel to the external road, playing an irreplaceable role in adapting to changes in terrain and resisting the influence of natural factors. When constructing the open-cut section, waterproofing is required on the upper wall of the tunnel. Scaffolding is usually used as a construction platform for the waterproofing layer, but construction is difficult due to terrain limitations. Using a suspended platform is not only expensive but also cannot meet the construction requirements due to terrain limitations. Utility Model Content

[0003] The purpose of this utility model is to provide a ladder structure for laying waterproof layers in open tunnel sections, in order to solve the problems mentioned in the background art, where scaffolding is usually used as a construction platform during the construction of waterproof layers in open tunnels, which is difficult to carry out due to terrain. If a suspended platform is used to provide the working platform, the cost is high and it is also subject to terrain, which cannot meet the construction requirements.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a ladder structure for laying a waterproof layer in a tunnel open section, comprising a construction frame, wherein the cross-section of the construction frame is a semi-circular ring structure, and a first ladder frame and a second ladder frame are respectively provided at the lower ends of both sides of the construction frame. A ladder guard cage is provided between the upper end of the outer surface of the first ladder frame and the second ladder frame and the lower end of the construction frame. A supporting pulley is provided on the lower surface of the construction frame, and a limiting pulley is provided on the inner surface of the first ladder frame and the second ladder frame. An opening is provided at the lower end of the first ladder frame and the second ladder frame and below the ladder guard cage.

[0005] Preferably, support beams are provided on the front and rear sides of the lower surface of the construction frame corresponding to the support pulleys, and on the front and rear sides of the inner surfaces of the first and second climbing ladder frames corresponding to the limiting pulleys. The support pulleys and the limiting pulleys are fixedly connected to the inner ends of the support beams by bolts, and a tie rod is provided between each set of support beams.

[0006] Preferably, the cross-section of the ladder cage is a cage-like frame structure with a semi-circular upper end and a vertical lower end, and the upper end of the ladder cage is positioned at a 45° angle to the cross-section of the construction frame.

[0007] Preferably, both the first ladder frame and the second ladder frame are equipped with ladders inside.

[0008] Preferably, the construction frame is provided with construction crossbeams inside.

[0009] Compared with the existing technology, the beneficial effects of this utility model are: when constructing the waterproof layer of a tunnel, it replaces the construction method of erecting scaffolding as a construction platform and using a suspended platform truck to provide a working platform. The advantages of using a self-made climbing ladder are that it is simple to manufacture, low in cost, and safe. Workers can freely climb up and down the ladder, and after completing the construction of an area, the ladder can be easily moved to a designated location to continue construction, ensuring safety while improving construction efficiency. Attached Figure Description

[0010] Figure 1 This is an isometric view of the main structure of this utility model;

[0011] Figure 2 This is a front sectional view of the main structure of this utility model;

[0012] Figure 3 This is a front view schematic diagram of the main structure of this utility model;

[0013] Figure 4 This is a right-side view of the main structure of this utility model.

[0014] In the diagram: 1-Construction frame, 2-First ladder frame, 3-Second ladder frame, 4-Ladder cage, 5-Support pulley, 6-Limiting pulley, 7-Opening, 8-Opening, 9-Tie rod, 10-Ladder, 11-Construction beam. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4This utility model provides a ladder structure for laying a waterproof layer in a tunnel open section, including a construction frame 1. The cross-section of the construction frame 1 is a semi-circular ring structure. A first ladder frame 2 and a second ladder frame 3 are respectively provided at the lower ends of the two sides of the construction frame 1. A ladder cage 4 is provided between the upper end of the outer surface of the first ladder frame 2 and the second ladder frame 3 and the lower end of the construction frame 1. A supporting pulley 5 is provided on the lower surface of the construction frame 1. A limiting pulley 6 is provided on the inner surface of the first ladder frame 2 and the second ladder frame 3. An opening 7 is provided at the lower end of the first ladder frame 2 and the second ladder frame 3 and below the ladder cage 4.

[0017] In use, a first-level ladder frame 2 and a second-level ladder frame 3 are installed on both sides of the construction frame 1. A support pulley 5 is installed at the lower end of the construction frame 1. A limiting pulley 6 is installed inside the first-level ladder frame 2 and the second-level ladder frame 3. The construction frame 1, carrying the first-level ladder frame 2 and the second-level ladder frame 3 on both sides, is positioned at the upper end of the tunnel's open-cut section via the support pulley 5 and the limiting pulley 6. This allows the construction frame 1, carrying the first-level ladder frame 2 and the second-level ladder frame 3 on both sides, to move along the upper end of the tunnel's open-cut section via the support pulley 5 and the limiting pulley 6. Ladder cages 4 are installed on both sides of ladder frame 2 and ladder frame 3. Openings 7 are set at the bottom of ladder frame 2 and ladder frame 3. After the entire ladder structure is set on the open section of the tunnel, workers enter the interior of ladder cage 4 through openings 7 and climb to the position of construction frame 1 through ladder frame 2 and ladder frame 3. Workers carry out waterproofing work on the open section of the tunnel at the position of construction frame 1. Workers can freely climb up and down the ladder and can easily move the ladder to the designated location to continue construction after completing a section.

[0018] Support beams 8 are provided on the front and rear sides of the lower surface of the construction frame 1, corresponding to the positions of the supporting pulleys 5, and on the front and rear sides of the inner surfaces of the first ladder frame 2 and the second ladder frame 3, corresponding to the positions of the limiting pulleys 6. The supporting pulleys 5 and the limiting pulleys 6 are fixedly connected to the inner ends of the support beams 8 by bolts. A tie rod 9 is provided between each set of support beams 8. Through the support beams 8, the supporting pulleys 5 are firmly fixed to the lower part of the construction frame 1, and the limiting pulleys 6 are firmly fixed to the inner sides of the first ladder frame 2 and the second ladder frame 3. The tie rods 9 between the support beams 8 improve the connection strength of the supporting pulleys 5 and the limiting pulleys 6.

[0019] The cross-section of the climbing ladder cage 4 is a cage-like frame structure with a semi-circular arc structure at the top and a vertical structure at the bottom. The upper end of the climbing ladder cage 4 is positioned at a 45° angle to the cross-section of the construction frame 1. The upper end of the construction frame 1 is designed as an open structure to facilitate waterproofing work on the upper part of the tunnel's open section from the location of the construction frame 1.

[0020] Both the first climbing frame 2 and the second climbing frame 3 are equipped with climbing ladders 10 inside. Workers can freely climb to the top of the overall structure through the climbing ladders 10 inside the first climbing frame 2 and the second climbing frame 3, which facilitates construction.

[0021] The construction frame 1 is equipped with a construction beam 11 inside. The construction beam 1 is set at the position of the construction frame 1, and the workers can stand on the position of the construction beam 1 to facilitate the waterproofing construction.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ladder structure for laying a waterproof layer in the open section of a tunnel, characterized in that: The system includes a construction frame (1) with a semi-circular cross-section. A first climbing frame (2) and a second climbing frame (3) are respectively provided at the lower ends of both sides of the construction frame (1). A climbing cage (4) is provided between the upper end of the outer surface of the first climbing frame (2) and the second climbing frame (3) and the lower end of the construction frame (1). A supporting pulley (5) is provided on the lower surface of the construction frame (1). A limiting pulley (6) is provided on the inner surface of the first climbing frame (2) and the second climbing frame (3). An opening (7) is provided at the lower end of the first climbing frame (2) and the second climbing frame (3) and below the climbing cage (4).

2. The ladder structure for laying a waterproof layer in a tunnel open section according to claim 1, characterized in that: Support beams (8) are provided on the front and rear sides of the lower surface of the construction frame (1) corresponding to the support pulleys (5), and on the front and rear sides of the inner surfaces of the first ladder frame (2) and the second ladder frame (3) corresponding to the limiting pulleys (6). The support pulleys (5) and the limiting pulleys (6) are fixedly connected to the inner ends of the support beams (8) by bolts. Tie rods (9) are provided between each set of support beams (8) in the front and rear.

3. The ladder structure for laying a waterproof layer in a tunnel open section according to claim 1, characterized in that: The cross-section of the climbing ladder cage (4) is a cage-like frame structure with a semi-circular arc structure at the top and a vertical structure at the bottom. The top of the climbing ladder cage (4) is positioned at a 45° angle to the cross-section of the construction frame (1).

4. The ladder structure for laying waterproof layer in open-cut tunnel sections according to claim 1, characterized in that: Both the first climbing ladder frame (2) and the second climbing ladder frame (3) are equipped with climbing ladders (10).

5. The ladder structure for laying a waterproof layer in a tunnel open-cut section according to claim 1, characterized in that: The construction frame (1) is equipped with a construction beam (11) inside.

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