Auxiliary tool for reinforcing deep foundation pit ladder cage

The ladder cage reinforcement auxiliary tool, consisting of support rods, reinforcing beams, and connecting ends, solves the problem of preventing lateral tilting when the ladder cage is long or has a large tilt angle, thereby improving the stability and safety of the ladder cage.

CN224161488UActive Publication Date: 2026-04-24CHINA RAILWAY NO 2 ENG GROUP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY NO 2 ENG GROUP CO LTD
Filing Date
2025-05-06
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Existing deep foundation pit cages have weak anti-tilting capabilities when they are long or have a large inclination angle, and are prone to tilting due to external forces, which affects stability.

Method used

A ladder cage reinforcement auxiliary tool is composed of support rods, reinforcing beams, and connecting ends. The support rods are fixedly connected to the side wall of the ladder cage by the reinforcing beams and connected to the retaining wall of the foundation pit, thereby strengthening the support structure and improving the anti-tilting ability.

Benefits of technology

When the cage is long or has a large tilt angle, it improves the stability of the cage, prevents it from tilting due to external forces, and enhances the safety and stability of the cage.

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Abstract

The deep foundation pit ladder cage reinforcing auxiliary tool comprises a supporting rod, a reinforcing beam and a connecting end, the supporting rod is composed of a left connecting rod, a right connecting rod and a threaded sleeve, the left connecting rod and the right connecting rod are located at the two ends of the threaded sleeve respectively and are in threaded connection with the threaded sleeve, and a mounting plate is arranged at the end of the right connecting rod. The end of the left connecting rod is connected with the outer side wall of a connecting end, the connecting end is connected to the surface of the reinforcing beam in a buckled mode, a buckling groove is formed in the connecting position of the connecting end and the reinforcing beam, a fixing pin connected in an inserted mode is arranged on the side wall of the buckling groove, the fixing pin penetrates through the connecting end and the reinforcing beam, and the two ends of the reinforcing beam are fixedly connected with connecting corner brackets respectively. The supporting rods, the reinforcing beams and the connecting ends are utilized to form the elevator cage reinforcing auxiliary tool, a supporting structure can be added to improve the anti-roll capacity under the condition that the elevator cage is long or the inclination angle is large, the supporting rods with the side walls capable of being connected with a foundation pit enclosure wall are matched, and the elevator cage is prevented from inclining due to the action of external force.
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Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to an auxiliary tool for reinforcing deep foundation pit ladder cages. Background Technology

[0002] In the complex environment of current deep foundation pit construction, ensuring the safe access of workers is not only a crucial aspect of construction management but also a prerequisite for guaranteeing project progress and quality. With the continuous expansion of urban construction, deep foundation pit projects are increasing in number, depth, and scale, placing higher demands on the design and safety performance of prefabricated pedestrian ladders—the passage facilities for workers within the foundation pit.

[0003] Currently, ladder cages used in the market are usually installed by assembly. This method has weak anti-tilting capabilities when the ladder cage is long or has a large inclination angle, and the ladder cage is prone to tilting under heavy loads. Therefore, a deep foundation pit ladder cage reinforcement auxiliary tool is proposed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an auxiliary tool for reinforcing deep foundation pit cages, solving the problem that existing long or steeply inclined cages have weak anti-tilting capabilities during use. This utility model utilizes support rods, reinforcing beams, and connecting ends to form a cage reinforcement auxiliary tool. The reinforcing beams are inclined and fixedly connected to the side wall of the cage. This increases the support structure to improve anti-tilting capabilities when the cage is long or steeply inclined. Combined with the support rods that can be connected to the foundation pit retaining wall, it prevents the cage from tilting due to external forces and improves the stability of the cage.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a deep foundation pit ladder cage reinforcement auxiliary tool, comprising a support rod, a reinforcement beam, and a connecting end. The support rod consists of a left connecting rod, a right connecting rod, and a threaded sleeve. The left and right connecting rods are located at both ends of the threaded sleeve and are threadedly connected to it. The end of the right connecting rod is provided with a mounting plate. The end of the left connecting rod is connected to the outer wall of the connecting end. The connecting end is fastened to the surface of the reinforcement beam. A fastening groove is provided at the connection between the connecting end and the reinforcement beam. A fixing pin for insertion connection is provided on the side wall of the fastening groove. The fixing pin passes through the connecting end and the reinforcement beam. Connecting angle brackets are fixedly connected to both ends of the reinforcement beam.

[0008] As an improvement to the above technical solution, the mounting plate is rotatably connected to the right connecting rod, and the surface of the mounting plate is provided with several anchoring holes.

[0009] As an improvement to the above technical solution, the surfaces of the left connecting rod and the right connecting rod are respectively provided with threaded grooves with opposite directions of rotation, and the sidewall of the threaded sleeve is provided with symmetrically distributed cross-sections.

[0010] As an improvement to the above technical solution, a rotating seat one is provided at the connection point between the connecting end and the left connecting rod, and a rotating seat two is provided at the connection point between the right connecting rod and the mounting plate.

[0011] As an improvement to the above technical solution, the reinforcing beam is made of channel steel and is welded to the connecting angle frame.

[0012] As an improvement to the above technical solution, the connecting angle brackets are distributed in an L-shape, and the side walls of the connecting angle brackets are provided with riveting holes.

[0013] (III) Beneficial Effects

[0014] This utility model provides an auxiliary tool for reinforcing deep foundation pits with ladder cages. It has the following beneficial effects:

[0015] This utility model utilizes a support rod, a reinforcing beam, and a connecting end to form an auxiliary tool for reinforcing a ladder cage. The reinforcing beam is fixedly connected to the side wall of the ladder cage at an incline. This can increase the support structure to improve the anti-tilting ability when the ladder cage is long or has a large tilt angle. In conjunction with the support rod that can be connected to the retaining wall of the foundation pit, it can prevent the ladder cage from tilting due to external forces and improve the stability of the ladder cage. Attached Figure Description

[0016] Figure 1 This is a side view of the installation structure of the auxiliary tool for reinforcing deep foundation pit ladder cages according to this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the deep foundation pit ladder cage reinforcement auxiliary tool of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the connecting end of this utility model.

[0019] In the diagram: Support rod-1, Reinforcing beam-2, Connecting end-3, Left connecting rod-4, Right connecting rod-5, Threaded sleeve-6, Mounting plate-7, Fastening groove-8, Fixing pin-9, Connecting bracket-10, Anchoring hole-11, Threaded groove-12, Cut surface-13, Rotating seat one-14, Rotating seat two-15, Riveting hole-16. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-3 This utility model provides a technical solution: a deep foundation pit ladder cage reinforcement auxiliary tool, including a support rod 1, a reinforcement beam 2, and a connecting end 3. The support rod 1 is composed of a left connecting rod 4, a right connecting rod 5, and a threaded sleeve 6. The left connecting rod 4 and the right connecting rod 5 are located at the two ends of the threaded sleeve 6 and are threadedly connected to the threaded sleeve 6. The end of the right connecting rod 5 is provided with a mounting plate 7. The end of the left connecting rod 4 is connected to the outer side wall of the connecting end 3. The connecting end 3 is fastened to the surface of the reinforcement beam 2. The connection between the connecting end 3 and the reinforcement beam 2 is provided with a fastening groove 8. The side wall of the fastening groove 8 is provided with a fixing pin 9 for insertion connection. The fixing pin 9 passes through the connecting end 3 and the reinforcement beam 2. The two ends of the reinforcement beam 2 are respectively fixedly connected with connecting angle brackets 10.

[0022] In a further improvement, the mounting plate 7 is rotatably connected to the right connecting rod 5, and the surface of the mounting plate 7 is provided with a plurality of anchor holes 11. By providing a plurality of anchor holes 11 on the surface of the mounting plate 7, it is convenient to use anchor rods to fix the mounting plate 7 to the surface of the foundation pit retaining wall, which facilitates the support of the ladder cage and improves the stability of the connection between the ladder cage and the foundation pit side wall.

[0023] Further improvements include the left connecting rod 4 and the right connecting rod 5 having oppositely oriented threaded grooves 12 on their surfaces, and the threaded sleeve 6 having symmetrically distributed cross-sections 13 on its sidewall. By providing the reversed threaded grooves 12 on the surfaces of the left connecting rod 4 and the right connecting rod 5, it is convenient to simultaneously lock the left connecting rod 4 and the right connecting rod 5 when rotating the threaded sleeve 6, thereby improving the uniformity of force distribution. In conjunction with the cross-sections 13 on the sidewall of the threaded sleeve 6, the stability of the tool engaging with the threaded sleeve 6 is improved.

[0024] In a further improvement, a rotating seat 14 is provided at the connection point between the connecting end 3 and the left connecting rod 4, and a rotating seat 25 is provided at the connection point between the right connecting rod 5 and the mounting plate 7. By providing rotating seats 14 and 25 at both ends of the support rod 1 respectively, it is convenient to adjust the fixed position of the mounting plate 7 and improve the convenience of construction operations.

[0025] Further improvements include the reinforcement beam 2 being made of channel steel, which is welded to the connecting angle bracket 10. By using channel steel to make the reinforcement beam 2, the structural strength of the reinforcement beam 2 is improved, while the procurement cost of the reinforcement beam 2 is reduced and the processing convenience of the reinforcement beam 2 is improved.

[0026] Specifically, the connecting angle brackets 10 are arranged in an L-shape, and the side walls of the connecting angle brackets 10 are provided with riveting holes 16. By adopting the L-shaped design of the connecting angle brackets 10, it is convenient to fasten the connecting angle brackets 10 to the steel structure at the corner of the ladder cage. With the riveting holes 16 on the surface of the connecting angle brackets 10, it is easy to rivet and fix the connecting angle brackets 10 to the ladder cage.

[0027] In use, the reinforcing beam 2 is placed at an angle on the side wall of the cage. The L-shaped connecting corner pieces at both ends of the reinforcing rod are fastened to the corners of the cage and fixed with rivets. The connecting end 3 is fastened to the surface of the reinforcing rod and fixed with the fixing pin 9 passing through the connecting end 3 and the reinforcing rod. The mounting plate 7 at the right end of the support rod 1 is pressed tightly against the surface of the pit retaining wall and fixed with the anchor rod. Finally, the threaded sleeve 6 is rotated with a tool to extend and retract the left connecting rod 4 and the right connecting rod 5, thereby improving the stability of the connection between the cage and the pit retaining wall.

[0028] The problem solved by this utility model is that ladder cages used in the market are usually installed by assembly. When the ladder cage is long or has a large tilt angle, its anti-tilting ability is weak, and the ladder cage is prone to tilting after being subjected to large forces. This utility model uses a support rod 1, a reinforcing beam 2 and a connecting end 3 to form a ladder cage reinforcement auxiliary tool. The reinforcing beam 2 is inclined and fixedly connected to the side wall of the ladder cage. When the ladder cage is long or has a large tilt angle, it can increase the support structure to improve the anti-tilting ability. In conjunction with the support rod 1, which can be connected to the pit retaining wall, the ladder cage is prevented from tilting due to external forces, thus improving the stability of the ladder cage.

[0029] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as “first,” “second,” “third,” or “fourth” may explicitly or implicitly include at least one of those features.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A deep foundation pit ladder cage reinforcement auxiliary tool, comprising a support rod (1), a reinforcement beam (2), and a connecting end (3), characterized in that: The support rod (1) consists of a left connecting rod (4), a right connecting rod (5) and a threaded sleeve (6). The left connecting rod (4) and the right connecting rod (5) are located at both ends of the threaded sleeve (6) and are threadedly connected to the threaded sleeve (6). The end of the right connecting rod (5) is provided with a mounting plate (7). The end of the left connecting rod (4) is connected to the outer wall of the connecting end (3). The connecting end (3) is fastened to the surface of the reinforcing beam (2). The connection between the connecting end (3) and the reinforcing beam (2) is provided with a fastening groove (8). The side wall of the fastening groove (8) is provided with a fixing pin (9) for insertion connection. The fixing pin (9) passes through the connecting end (3) and the reinforcing beam (2). The two ends of the reinforcing beam (2) are respectively fixedly connected with connecting brackets (10).

2. The auxiliary tool for reinforcing deep foundation pit ladder cages according to claim 1, characterized in that: The mounting plate (7) is rotatably connected to the right connecting rod (5), and the surface of the mounting plate (7) is provided with several anchoring holes (11).

3. The auxiliary tool for reinforcing deep foundation pit ladder cages according to claim 1, characterized in that: The surfaces of the left connecting rod (4) and the right connecting rod (5) are respectively provided with threaded grooves (12) with opposite directions of rotation, and the side wall of the threaded sleeve (6) is provided with symmetrically distributed cross-sections (13).

4. The auxiliary tool for reinforcing deep foundation pit ladder cages according to claim 1, characterized in that: A rotating seat one (14) is provided at the connection point between the connecting end (3) and the left connecting rod (4), and a rotating seat two (15) is provided at the connection point between the right connecting rod (5) and the mounting plate (7).

5. The auxiliary tool for reinforcing deep foundation pit ladder cages according to claim 1, characterized in that: The reinforcing beam (2) is made of channel steel and is welded to the connecting angle bracket (10).

6. The auxiliary tool for reinforcing deep foundation pit ladder cages according to claim 1, characterized in that: The connecting brackets (10) are arranged in an L-shape, and the side walls of the connecting brackets (10) are provided with rivet holes (16).