Cage type climbing prevention ladder
By designing anti-climb doors on cage-type ladders and utilizing steel door frames, steel gratings, and ear plate structures, the problem of climbing by non-professionals has been solved, improving both safety and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING ZHONGWANG GROUP CO LTD
- Filing Date
- 2025-03-28
- Publication Date
- 2026-04-10
AI Technical Summary
The existing cage-style climbing ladders cannot effectively prevent non-professional maintenance personnel taller than 1.8m from climbing, posing a safety hazard.
A cage-type anti-climb ladder was designed, including an anti-climb door. The anti-climb door consists of a steel frame, a steel grid, a first ear plate, and a second ear plate. The anti-climb door is sealed by locking the through holes of the ear plates. The anti-climb door can be flipped open. The structure is enhanced in terms of stability and safety by combining steel supports and a flat steel frame.
It effectively prevents unauthorized personnel from climbing, improving safety, while being easy to operate and enhancing structural stability and protective effect.
Smart Images
Figure CN224107201U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a cage type ladder stand for mechanical and electrical engineering field, in particular to a cage type ladder stand. BACKGROUND
[0002] In the use process of dust removal equipment or silo, non-professional maintenance personnel are not allowed to climb the framework to prevent dangerous accidents. In the prior art, a lockable door plate is installed on the lower part of the ladder stand, which is used to limit the staff from stepping on the ladder stand, thereby managing the personnel access to the ladder stand. This method can limit personnel access, but it is actually a mere formality. According to the data provided by the relevant design specification, the lower edge of the cage type ladder stand is designed to be 2m high. Non-professional maintenance personnel with a height of more than 1.8m can climb the cage type ladder stand by holding the guardrail, and then easily pass through the cage type ladder stand by leaning down and stepping on the door plate. SUMMARY
[0003] Therefore, the utility model discloses a cage type ladder stand, and the specific scheme is as follows:
[0004] A cage type ladder stand comprises a cage type ladder stand, a ladder stand and a cage.
[0005] The cage type ladder stand comprises a ladder stand and a cage, and the cage is arranged on the ladder stand.
[0006] The anti-climbing door is arranged on the ladder stand below the cage and comprises a section steel door frame, a steel mesh, a first ear plate and a second ear plate. The steel mesh is a grid structure formed by a plurality of horizontal steel bars and vertical steel bars, and the whole is a fan-shaped structure for plugging the opening at the lower end of the cage.
[0007] The section steel door frame is a square frame structure arranged vertically, one end of the steel mesh is welded to the upper end of the section steel door frame, the left end of the section steel door frame is hinged to the ladder stand, the first ear plate is welded to the right end of the section steel door frame, and the second ear plate is welded to the right end of the ladder stand. When the steel mesh is at the entrance position of the lower end of the cage, the first ear plate and the second ear plate are attached to each other. The first ear plate and the second ear plate are provided with through holes, and a lock passes through the through holes of the first ear plate and the second ear plate to lock the first ear plate and the second ear plate.
[0008] According to the supplementary technical scheme of the utility model, the anti-climbing door further comprises a section steel support, the lower end of the section steel support is connected with the section steel door frame, and the upper end of the section steel support is connected with the lower bottom of the steel mesh. The section steel support, the section steel door frame and the steel mesh form a triangular structure.
[0009] According to the supplementary technical scheme of the utility model, the anti-climbing door further comprises a flat steel frame, and the flat steel frame is arranged outside the steel mesh.
[0010] The utility model discloses technical scheme's supplement, the anti -climbing door still includes socket type hinge shaft, hinge shaft sleeve, the hinge shaft sleeve sets up on the cat ladder, socket type hinge shaft sets up on the section steel door frame, and socket type hinge shaft is inserted in the hinge shaft sleeve.
[0011] The utility model discloses technical scheme's supplement, still including small piece steel sheet, socket type hinge shaft is connected with small piece steel sheet between section steel door frame.
[0012] The utility model discloses technical scheme's supplement, the height distance of first ear plate and second ear plate is 1.5m from ground.
[0013] Beneficial effect: the device is convenient for the management of cat ladder switch, effectively prevents the possibility of non-professional maintenance personnel through the cage type cat ladder, and improves the safety factor to a certain extent. Meanwhile, the anti-climbing door is set to the horizontal overturning opening mode, so the switch is not laborious, and the operation is simple. DRAWINGS
[0014] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.
[0015] Figure 2 It is the main view structure schematic diagram of the utility model.
[0016] Figure 3 It is the anti-climbing door structure schematic diagram of the utility model.
[0017] Figure 4 It is the anti-climbing door structure schematic diagram of the utility model.
[0018] Figure 5 It is the side view structure schematic diagram of the utility model.
[0019] Figure 6 It is Figure 5 It is the structure enlarged schematic diagram of A place in middle.
[0020] Figure 7 It is the side view structure schematic diagram of the utility model.
[0021] Figure 8 It is Figure 7 It is the structure enlarged schematic diagram of B place in middle.
[0022] Figure 9 It is the hinge shaft sleeve schematic diagram of the utility model.
[0023] Figure 10 It is the socket type hinge shaft schematic diagram of the utility model.
[0024] Figure 11 It is the first ear plate schematic diagram of the utility model.
[0025] In the figure: 1. Anti-climbing door, 11. Steel mesh, 12. Flat steel frame, 13. Steel door frame, 14. Steel support;
[0026] 2. Cage ladder, 21. Ladder, 22. Cage;
[0027] 3. Hinge shaft sleeve, 4. Socket hinge shaft, 5. First ear plate, 6. Lock, 7. Small steel plate, 8. Second ear plate. DETAILED DESCRIPTION
[0028] In the description of the present application, it is understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0029] In the present application, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0030] As shown in Figures 1 to 11 A cage anti-climbing ladder, comprising a cage ladder 2, an anti-climbing door 1.
[0031] The cage ladder 2 comprises a ladder 21 and a cage 22, the cage 22 is arranged on the ladder 21,
[0032] The anti-climbing door 1 is arranged on the ladder 21 and below the cage 22, which comprises a steel door frame 13, a steel mesh 11, a first ear plate 5 and a second ear plate 8. The steel mesh 11 is a grid structure composed of a plurality of horizontal steel bars and vertical steel bars, and the whole is a fan-shaped structure, which is used to block the opening at the lower end of the cage 22.
[0033] The steel frame door frame 13 is a square frame structure, which is vertically arranged, one end of the steel grid 11 is welded to the upper end of the steel frame door frame 13, the left end of the steel frame door frame 13 is hinged to the ladder 21, so that the steel frame door frame 13 can drive the steel grid 11 to overturn on the ladder 21, so as to realize the blocking or opening of the entrance at the lower end of the protective cage 22. The first ear plate 5 is welded to the right end of the steel frame door frame 13, and the second ear plate 8 is welded to the right end of the ladder 21. When the steel grid 11 is in the position of blocking the entrance at the lower end of the protective cage 22, the first ear plate 5 and the second ear plate 8 are in close contact. The first ear plate 5 and the second ear plate 8 are provided with through holes, and when it is necessary to lock the anti-climbing door 1, the lock 6 is used to pass through the through holes of the first ear plate 5 and the second ear plate 8, so as to lock the first ear plate 5 and the second ear plate 8, close the passage of the cage ladder 2, and non-equipment maintenance personnel cannot enter the cage ladder 2. When the equipment maintenance personnel works, the lock is removed from the holes of the two ear plates, the anti-climbing door 1 is opened, and the equipment maintenance personnel reaches the upper platform through the cage ladder 2.
[0034] The outer edge of the anti-climbing door 1 is aligned with the outer edge of the protective cage 22 of the cage ladder 2, or the outer edge of the anti-climbing door 1 slightly protrudes from the outer edge of the protective cage 22 of the cage ladder 2.
[0035] As a supplement to the above technical scheme, the height of the first ear plate 5 and the second ear plate 8 should be about 1.5m higher than the ground, which is convenient for operation. In the closed state of the anti-climbing door 1, the mesh plate surface of the anti-climbing door 1 covers the entire passage of the cage ladder 2, so that non-professional maintenance personnel cannot enter at all, and can only pass through after the management personnel open the lock buckle to open the door plate. Because the design is centered on the vertical shaft and rotates the anti-climbing door 1 horizontally, the opening and closing is not laborious and the operation is simple. At the same time, the anti-climbing door 1 is arranged at the lower end of the protective cage of the cage ladder 2 to limit personnel from entering the protective cage, which replaces the lockable door plate arranged at the lower part of the ladder 21 in the prior art, and the anti-climbing effect is better.
[0036] As a preferred technical scheme of the utility model, the anti-climbing door 1 further comprises a steel support 14, the lower end of the steel support 14 is connected with the steel frame door frame 13, and the upper end of the steel support 14 is connected with the lower bottom of the steel grid 11.
[0037] Since the steel grid 11 is connected with the steel frame door frame 13 at only one end, the arrangement of the steel support 14 avoids stress concentration of the steel grid 11 at the end connected with the steel frame door frame, and improves the overall structural stability of the steel frame door frame 13.
[0038] Preferably, the upper end of the steel support 14 is connected with the steel grid 11 at a position around the center of gravity of the steel grid 11.
[0039] As the preferred technical scheme of the present application, the anti-climbing door 1 further comprises a flat steel frame 12, which is arranged at the outer periphery of the steel mesh 11 and is used to avoid scratching personnel by the edge of the steel mesh 11.
[0040] As the preferred technical scheme of the present application, the anti-climbing door 1 further comprises a socketed hinge shaft 4 and a hinge shaft sleeve 3, the hinge shaft sleeve 3 is arranged on the ladder 21, the socketed hinge shaft 4 is arranged on the steel door frame 13, the socketed hinge shaft 4 is inserted into the hinge shaft sleeve 3, and the ladder 21 and the steel door frame 13 are hingedly connected. It should be ensured that the installation is smooth, when the steel mesh plate abuts against the lower edge of the cage 22, the socketed hinge shaft 4 should be located above the hinge shaft sleeve 3, so that it can be smoothly inserted into the hinge shaft sleeve 3.
[0041] As the preferred technical scheme of the present application, it further comprises a small piece of steel plate 7, the socketed hinge shaft 4 is connected with the steel door frame 13 through the small piece of steel plate 7, specifically, the socketed hinge shaft 4, the small piece of steel plate 7 and the steel door frame 13 are sequentially welded and connected, the small piece of steel plate 7 is raised to a certain height, and it is ensured that the rotation of the steel door frame 13 which is indirectly rigidly connected with the socketed hinge shaft does not interfere with the spatial position of the hinge shaft sleeve 3.
[0042] The above is only a preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A caged anti-climb ladder characterized by, It comprises a cage ladder (2) and an anti-climbing door (1). The cage ladder (2) comprises a ladder (21) and a protective cage (22) arranged on the ladder (21). The anti-climbing door (1) is arranged on the ladder (21) below the protective cage (22) and comprises a profile steel door frame (13), a steel mesh (11), a first lug plate (5) and a second lug plate (8). The steel mesh (11) is a grid structure formed by a plurality of horizontal steel bars and vertical steel bars and has a fan-shaped structure as a whole and is used for blocking the opening at the lower end of the protective cage (22).
2. A cage anti-climb ladder according to claim 1, wherein, The profile steel door frame (13) is a square frame structure arranged vertically, one end of the steel mesh (11) is welded to the upper end of the profile steel door frame (13), the left end of the profile steel door frame (13) is hingedly connected to the ladder (21), the first lug plate (5) is welded to the right end of the profile steel door frame (13), the second lug plate (8) is welded to the right end of the ladder (21), when the steel mesh (11) is at the entrance position of the lower end of the protective cage (22), the first lug plate (5) and the second lug plate (8) are in close contact, the first lug plate (5) and the second lug plate (8) are provided with through holes, and a lock (6) passes through the through holes of the first lug plate (5) and the second lug plate (8) to lock the first lug plate (5) and the second lug plate (8).
3. A cage anti-climb ladder according to claim 1 wherein, The anti-climbing door (1) further comprises a profile steel support (14), the lower end of the profile steel support (14) is connected to the profile steel door frame (13), and the upper end of the profile steel support (14) is connected to the lower bottom of the steel mesh (11), and the profile steel support (14), the profile steel door frame (13) and the steel mesh (11) form a triangular structure.
4. A cage anti-climb ladder according to claim 1 wherein, The anti-climbing door (1) further comprises a flat steel frame (12) arranged on the outer periphery of the steel mesh (11).
5. A caged anti-climb ladder according to claim 4, wherein, The anti-climbing door (1) further comprises a socket hinge shaft (4) and a hinge shaft sleeve (3), the hinge shaft sleeve (3) is arranged on the ladder (21), and the socket hinge shaft (4) is arranged on the profile steel door frame (13) and is inserted into the hinge shaft sleeve (3).
6. A cage anti-climb ladder according to claim 1 wherein, The socket hinge shaft (4) and the profile steel door frame (13) are connected by a small piece of steel plate (7). The first lug plate (5) and the second lug plate (8) are 1.5 m high from the ground.