Foundation pit tool type suspension step ladder

Abstract

The utility model discloses a foundation pit tool type suspension step ladder, which belongs to the technical field of step ladders and is characterized by comprising a bearing wall and a cage body, a concrete foundation block is arranged on the right side of the bearing wall, a cantilever beam is arranged at the top of the concrete foundation block, and one side, close to the cage body, of the cantilever beam is welded with the cage body. The problems that when an existing foundation pit tool type suspended step ladder is used, the step ladder can only be installed after foundation pit excavation is completed, an appropriate personnel up-and-down channel is lacked in the excavation process, constructors are inconvenient to pass through, the construction efficiency is low, the construction cost is high, and the like are solved. The problems that existing step ladders are not high in use efficiency and have certain safety risks, and traditional step ladders are difficult to achieve flexible conversion of functions in different construction stages, inconvenient to meet diversified requirements in actual construction and inconvenient to use by users are solved.

Description

Technical Field

[0001] This utility model relates to the field of stair technology, and in particular to a pit-type suspended staircase. Background Technology

[0002] Prefabricated, modular step ladders are now widely used in the construction phase of underground structures. These ladders are located at the bottom of the excavation pit and are installed layer by layer from the bottom to the top of the pit after excavation is completed. They are securely connected to the pit's sidewalls to allow for worker access. However, because these modular step ladders are located at the bottom of the pit, they can only be installed after excavation is complete. During the excavation process, because the modular step ladders are not yet ready for conventional installation, workers can only reach the work surface via vehicle ramps. This process presents disadvantages such as mixed pedestrian and vehicle traffic, inconvenient construction, and low utilization efficiency.

[0003] During the excavation of the foundation pit, construction workers can only reach the work surface via vehicle ramps. Therefore, the excavation of the foundation pit presents disadvantages such as mixed traffic of people and vehicles, inconvenience of construction, and low utilization efficiency.

[0004] An existing patent (publication number: CN212176685U) discloses a tool-type suspended step ladder for foundation pits, including at least two support brackets fixedly installed at the edge of the foundation pit and a step ladder installed below the support brackets. Each support bracket has a vertical pole fixedly installed below it. This application has the effect of being built from top to bottom and growing with the depth of the foundation pit, which facilitates foundation pit construction.

[0005] To address the aforementioned issues, existing patents offer solutions. However, existing pit-mounted suspended staircases require installation only after the pit excavation is complete. During the excavation process, the lack of suitable access for personnel leads to inconvenience, low construction efficiency, and low utilization rate. Furthermore, they pose certain safety risks. In addition, traditional staircases cannot flexibly switch functions at different construction stages, making them unsuitable for meeting diverse needs in actual construction and inconvenient for users.

[0006] Therefore, a tool-type suspended ladder for foundation pits is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a tool-type suspended staircase for foundation pits, which can solve the problems of existing tool-type suspended staircases for foundation pits. The staircases can only be installed after the foundation pit is excavated. During the excavation process, there is a lack of suitable access for personnel, which leads to inconvenience for construction workers, low construction efficiency, low utilization efficiency, and certain safety risks. In addition, traditional staircases are difficult to flexibly switch functions at different construction stages, which is not convenient to meet the diverse needs of actual construction and is inconvenient for users.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a pit-mounted suspended ladder, comprising a load-bearing wall and a cage, wherein a concrete foundation block is provided on the right side of the load-bearing wall, a cantilever beam is provided on the top of the concrete foundation block, the side of the cantilever beam near the cage is welded to the cage, a diagonal brace is provided at the bottom of the cantilever beam, and an I-beam waist beam is provided on the left side of the load-bearing wall.

[0009] Preferably, a pre-installed steel plate is provided on the left side of the load-bearing wall, and the left side of the pre-installed steel plate is bolted to the right side of the diagonal brace.

[0010] Preferably, the inner wall of the concrete foundation block is provided with a first bolt, and the surface of the first bolt is movably connected to the inner wall of the cantilever beam.

[0011] Preferably, the surface of the first bolt is threaded with a first nut, and the bottom of the first nut is in close contact with the top of the cantilever beam.

[0012] Preferably, the inner wall of the load-bearing wall is provided with a second bolt, the surface of which is movably connected to the inner wall of the cantilever beam.

[0013] Preferably, the second bolt has a second nut threaded onto its surface, and the bottom of the second nut is in close contact with the top of the cantilever beam.

[0014] Preferably, the inner wall of the load-bearing wall is provided with a fixing rod assembly, and the surface of the fixing rod assembly is movably connected to the inner wall of the cage.

[0015] Preferably, a ladder assembly is bolted to the inner wall of the cage, and a protective net assembly is provided on the inner wall of the cage.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This application utilizes a load-bearing wall, cage, concrete foundation block, cantilever beam, diagonal bracing, and I-beam wainscoting. By placing the concrete foundation block on the right side of the load-bearing wall and then mounting the cantilever beam on top of it, the cage can be pre-installed during the excavation process, meeting the passage requirements of construction personnel. The welding of the cantilever beam to the cage enhances the connection stability, and the bottom diagonal bracing further reinforces the cantilever structure, improving overall stability. The I-beam wainscoting on the left side of the load-bearing wall effectively distributes and transfers the load, making the cage safer and more reliable during construction. Furthermore, this structure allows for gradual installation as the excavation depth increases, and after excavation, it can be easily converted into a ground-mounted cage, seamlessly connecting different construction stages, improving construction efficiency, ensuring personnel safety, and reducing construction costs. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the foundation pit tool-type suspended ladder of this utility model;

[0019] Figure 2 This is a structural diagram of the first bolt of this utility model;

[0020] Figure 3 This is a structural diagram of the diagonal brace of this utility model;

[0021] Figure 4 This is a structural diagram of the I-beam web beam of this utility model;

[0022] Figure 5 This is a side view of the ladder assembly of this utility model.

[0023] In the diagram, 1. Load-bearing wall; 2. Cage; 3. Concrete foundation block; 4. Cantilever beam; 5. Diagonal brace; 6. I-beam wainscoting; 7. Pre-installed steel plate; 8. First bolt; 9. First nut; 10. Second bolt; 11. Second nut; 12. Fixing rod assembly; 13. Ladder assembly; 14. Protective net assembly. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-5 The present invention provides the following technical solution:

[0026] The pit-mounted suspended staircase includes a load-bearing wall 1 and a cage 2. A concrete foundation block 3 is provided on the right side of the load-bearing wall 1. A cantilever beam 4 is provided on the top of the concrete foundation block 3. The side of the cantilever beam 4 closest to the cage 2 is welded to the cage 2. A diagonal brace 5 is provided at the bottom of the cantilever beam 4. An I-beam waist beam 6 is provided on the left side of the load-bearing wall 1.

[0027] In this embodiment: by setting up a load-bearing wall 1, a cage 2, a concrete foundation block 3, a cantilever beam 4, diagonal bracing 5, and an I-beam waist beam 6, and by setting the concrete foundation block 3 on the right side of the load-bearing wall 1, and then setting the cantilever beam 4 on top of the concrete foundation block 3, the cage 2 can be installed in advance during the excavation of the foundation pit, meeting the passage needs of construction personnel. The welding of the cantilever beam 4 to the cage 2 enhances the connection stability, and the bottom diagonal bracing 5 further strengthens the cantilever structure and improves the overall stability. The I-beam waist beam 6 set on the left side of the load-bearing wall 1 can effectively distribute and transfer the load, making the cage 2 safer and more reliable during construction. At the same time, this structure is easy to install downwards section by section as the excavation depth of the foundation pit is increased, and can be easily converted into a ground-mounted cage 2 after the foundation pit is excavated, seamlessly connecting different construction stages, improving construction efficiency, ensuring the safety of personnel passage, and reducing construction costs.

[0028] Specifically, such as Figure 3 As shown, a pre-installed steel plate 7 is provided on the left side of the load-bearing wall 1, and the left side of the pre-installed steel plate 7 is bolted to the right side of the diagonal brace 5.

[0029] Specifically, such as Figure 2 As shown, the inner wall of the concrete foundation block 3 is provided with a first bolt 8, and the surface of the first bolt 8 is movably connected to the inner wall of the cantilever beam 4.

[0030] Specifically, such as Figure 2 As shown, the surface of the first bolt 8 is threaded with a first nut 9, and the bottom of the first nut 9 is in close contact with the top of the cantilever beam 4.

[0031] In this embodiment: the steel plate 7 pre-installed on the left side of the load-bearing wall 1 is bolted to the diagonal brace 5, which facilitates the quick installation and positioning of the diagonal brace 5, enhances the reliability of the connection between the diagonal brace 5 and the load-bearing wall 1, further stabilizes the cantilever structure, and effectively improves the overturning resistance of the suspended staircase during construction. The first bolt 8 is set on the inner wall of the concrete foundation block 3. When installing the cantilever beam 4, the cantilever beam 4 is placed in the installation position, and the first nut 9 is rotated on the surface of the first bolt 8 so that the bottom of the first nut 9 is in close contact with the top of the cantilever beam 4, which facilitates the strengthening of the stability of the cantilever beam 4 during installation.

[0032] Specifically, such as Figure 3 As shown, a second bolt 10 is provided on the inner wall of the load-bearing wall 1, and the surface of the second bolt 10 is movably connected to the inner wall of the cantilever beam 4.

[0033] Specifically, such as Figure 3 As shown, the surface of the second bolt 10 is threaded with a second nut 11, and the bottom of the second nut 11 is in close contact with the top of the cantilever beam 4.

[0034] In this embodiment, the second bolt 10 and the second nut 11 on the inner wall of the load-bearing wall 1 are used to connect the cantilever beam 4, which can enhance the stability of the cantilever beam 4 when it is fixed and ensure the stability of the cage 2 during installation.

[0035] Specifically, such as Figure 4 As shown, a fixing rod assembly 12 is provided on the inner wall of the load-bearing wall 1, and the surface of the fixing rod assembly 12 is movably connected to the inner wall of the cage 2.

[0036] Specifically, such as Figure 4 , Figure 5 As shown, a ladder assembly 13 is bolted to the inner wall of the cage 2, and a protective net assembly 14 is provided on the inner wall of the cage 2.

[0037] In this embodiment: the fixed rod assembly 12 realizes the movable connection between the cage 2 and the bearing wall 1, which facilitates the installation of the cage 2 section by section as the excavation depth of the foundation pit increases, and can buffer the force to a certain extent. The ladder assembly 13 and the protective net assembly 14 provide construction personnel with a safe passage to go up and down and comprehensive protection, effectively preventing personnel from falling and ensuring the safety of construction personnel.

[0038] Working Principle: During the use of the load-bearing wall 1 and cage 2, the cage 2, concrete foundation block 3, cantilever beam 4, diagonal brace 5, and I-beam waist beam 6 are installed. The concrete foundation block 3 is set on the right side of the load-bearing wall 1, and the cantilever beam 4 is set on top of the concrete foundation block 3. The cage 2 can be installed in advance during the foundation pit excavation, meeting the passage needs of construction personnel. The cantilever beam 4 is welded to the cage 2 to enhance the connection stability. The bottom diagonal brace 5 further strengthens the cantilever structure and improves the overall stability. The I-beam waist beam 6 set on the left side of the load-bearing wall 1 can effectively distribute and transfer the load, making the cage 2 safer and more reliable during construction. At the same time, this structure is easy to install downwards section by section as the foundation pit excavation depth increases, and can be easily converted into a ground-mounted cage 2 after the foundation pit excavation is completed, seamlessly connecting different construction stages, improving construction efficiency, ensuring personnel passage safety, and reducing construction costs.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A foundation tooling suspended stairway comprising a load bearing wall (1) and a cage (2) characterised in that: The right side of the bearing wall (1) is provided with a concrete foundation block (3), the top of the concrete foundation block (3) is provided with a cantilever beam (4), the cantilever beam (4) is welded to the cage (2) near one side of the cage (2), and the bottom of the cantilever beam (4) is provided with an inclined bracing rod (5); the left side of the bearing wall (1) is provided with an I-beam waist beam (6).

2. A pit tool suspended stair according to claim 1, wherein: The left side of the bearing wall (1) is provided with a pre-assembled steel plate (7), and the left side of the pre-assembled steel plate (7) is bolted to the right side of the inclined bracing rod (5).

3. The excavation tool-style suspended stairway of claim 1, wherein: The inner wall of the concrete foundation block (3) is provided with a first bolt (8), and the surface of the first bolt (8) is movably connected with the inner wall of the cantilever beam (4).

4. A pit tool suspended stair according to claim 3, wherein: The surface of the first bolt (8) is threadedly connected with a first nut (9), and the bottom of the first nut (9) is in close contact with the top of the cantilever beam (4).

5. The excavation tool-style suspended stairway of claim 1, wherein: The inner wall of the bearing wall (1) is provided with a second bolt (10), and the surface of the second bolt (10) is movably connected with the inner wall of the cantilever beam (4).

6. A pit tool suspended stair according to claim 5, wherein: The surface of the second bolt (10) is threadedly connected with a second nut (11), and the bottom of the second nut (11) is in close contact with the top of the cantilever beam (4).

7. The excavation tool-style suspended stairway of claim 1, wherein: The inner wall of the bearing wall (1) is provided with a fixed rod assembly (12), and the surface of the fixed rod assembly (12) is movably connected with the inner wall of the cage (2).

8. The excavation tool-style suspended stairway of claim 1, wherein: The inner wall of the cage (2) is bolted with a ladder assembly (13), and the inner wall of the cage (2) is provided with a protective net assembly (14).

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