Collapsible cage steel ladder

Abstract

The utility model discloses a steel ladder stand of foldable protective cage, including straight ladder frame, the both sides of straight ladder frame top are equipped with the hook for hooking, and the straight ladder frame has the protective cage for safety protection, the limiting block for the limiting of protective cage and the wall brace for the stability of straight ladder frame when hooking along the line distribution, and the both sides of protective cage can swingly articulate in the both sides of straight ladder frame, and the limiting block is in the both sides of straight ladder frame and is distributed in the vicinity below the hinge point of protective cage and straight ladder frame, and the protective cage can be folded and laid flat upwards, and the protective cage is stopped by the limiting block when standing and cannot swing downwards again, and the wall brace is in the both sides of straight ladder frame. When transporting, all protective cages can be folded and laid flat, and the space occupied is small, and all protective cages can automatically keep standing state when using.

Description

Technical Field

[0001] This utility model relates to ladders, specifically to a steel ladder with a foldable protective cage. Background Technology

[0002] In low-to-medium height operations such as industrial equipment maintenance and steel structure upkeep, ladders are frequently used for climbing. To ensure the safety of personnel during climbing, safety cages need to be installed along the ladder. However, current safety cages are either welded or bolted to the ladder. Welding the cages before transporting them requires a lot of space, and on-site welding requires a lot of equipment and involves live electrical work. Bolting the cages to the ladder before transporting them also requires a lot of space, and on-site bolting significantly impacts work efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a steel ladder with foldable protective cages, which can be folded flat during transportation, occupying little space, and all protective cages can automatically maintain an upright state during use.

[0004] The technical solution adopted in this utility model is:

[0005] A foldable steel ladder with a protective cage includes a straight ladder frame; hooks for hooking are provided on both sides of the top of the straight ladder frame; a protective cage for safety protection, limiting blocks for limiting the position of the protective cage, and wall supports for stabilizing the straight ladder frame when hooked are distributed along the straight ladder frame; the protective cage is hinged to the two sides of the straight ladder frame on both sides, and the limiting blocks are located on both sides of the straight ladder frame and distributed near the hinge point between the protective cage and the straight ladder frame; the protective cage can be folded upwards and laid flat; when the protective cage is upright, it is stopped by the limiting blocks and cannot swing downwards; the wall supports are located on both sides of the straight ladder frame.

[0006] Preferably, the protective cage includes left and right split half cages, each half cage including upper and lower distributed hoop bars and synchronous reinforcing rods connecting the upper and lower hoop bars. One end of the hoop bar is hinged to the straight ladder frame, and the other end is connected to the hoop bar end of the other half cage. The upper and lower connecting ends of the two half cages are also connected by synchronous reinforcing rods, and both ends of all synchronous reinforcing rods are hinged.

[0007] Preferably, both ends of the hoop are bent to form a connecting part.

[0008] Preferably, both the hoop and the synchronous reinforcing rod are hinged using bolt assemblies.

[0009] Preferably, the cage is square in shape.

[0010] Preferably, the cage is cylindrical in shape.

[0011] Preferably, the straight ladder frame adopts a longitudinal splicing structure, and adjacent straight ladder frames are connected on both sides by connecting plates and bolt assemblies.

[0012] Preferably, the hook includes a hook steel bar and a hook steel plate welded together, the hook steel bar being bent into a U-shape and one side being welded to the hook steel plate, and the hook steel plate being used for bolt mounting on the straight ladder frame.

[0013] Preferably, the wall support includes wall support steel bars and wall support steel plates welded together. The wall support steel bars are bent into a U-shape and welded to the wall support steel plates at both ends. The wall support steel plates are used for bolting onto the straight ladder frame.

[0014] Preferably, the straight ladder frame includes a pair of vertical bars and horizontal bars connected and distributed between the vertical bars.

[0015] The beneficial effects of this utility model are:

[0016] During transportation, all cages are folded and laid flat, taking up little space. On-site, hooks are used to hang the entire ladder at the position to be climbed, and wall supports are used to stabilize the straight ladder frame against the wall. All cages swing downwards under their own weight and are stopped by limit blocks, so that all cages remain upright and personnel are protected by the cages during the climbing process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the foldable steel ladder with protective cage in Embodiment 1 of this utility model.

[0019] Figure 2 This is a schematic diagram of the installation of the hook in Embodiment 1 of this utility model.

[0020] Figure 3 This is a schematic diagram of the wall support installation in Embodiment 1 of this utility model.

[0021] Figure 4 This is a schematic diagram of the installation of the protective cage in Embodiment 1 of this utility model.

[0022] Figure 5 This is a schematic diagram of the splicing of adjacent straight ladder frames in Embodiment 1 of this utility model.

[0023] Figure 6 This is a schematic diagram of the foldable steel ladder with protective cage in Embodiment 2 of this utility model.

[0024] In the diagram: 1-Hook; 11-Hook reinforcement bar; 12-Hook steel plate; 2-Straight ladder frame; 21-Vertical bar; 22-Horizontal bar; 3-Cage guard; 31-Hoop bar; 311-Connecting part; 32-Synchronous reinforcing bar; 4-Wall brace; 41-Wall brace reinforcement bar; 42-Wall brace steel plate; 5-Connecting piece; 6-Limiting block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this application, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in. They are only for the convenience of describing this application 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 application.

[0029] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] The features and performance of this application will be further described in detail below with reference to the embodiments.

[0031] Example 1

[0032] This embodiment discloses a foldable steel ladder with a protective cage, such as... Figures 1 to 5 As shown, it includes a straight ladder frame 2, a hook 1, a protective cage 3, a limiting block 6, and a wall support 4; wherein:

[0033] Hooks 1 are located on both sides of the top of the straight ladder frame 2 for hooking. In this embodiment, for ease of manufacture and reliable use, hooks 1 include hook steel bars 11 and hook steel plates 12 welded together. The hook steel bars 11 are bent into a U-shape and one side is welded to the hook steel plate 12. The hook steel plate 12 is used for bolting onto the straight ladder frame 2. See [link to documentation]. Figure 1 and Figure 2 .

[0034] Wall supports 4 are distributed along the straight ladder frame 2 to stabilize the straight ladder frame 2 during hooking. The wall supports 4 are located on both sides of the straight ladder frame 2. In this embodiment, for ease of manufacture and reliable use, the wall supports 4 include wall support steel bars 21 and wall support steel plates 22 welded together. The wall support steel bars 21 are bent into a U-shape and welded to the wall support steel plates 22 at both ends. The wall support steel plates 22 are used for bolting onto the straight ladder frame 2. (See...) Figure 1 and Figure 3 .

[0035] Limiting blocks 6 are distributed along the straight ladder frame 2 to limit the movement of the cage 3. The limiting blocks 6 are located on both sides of the straight ladder frame 2 and are distributed near the hinge point between the cage 3 and the straight ladder frame 2. (See...) Figure 1 and Figure 4 .

[0036] The safety cage 3 is distributed along the straight ladder frame 2 for safety protection. Both sides of the safety cage 3 are hinged to the straight ladder frame 2, allowing it to swing vertically. The safety cage 3 can be folded upwards and laid flat. When upright, the safety cage 3 is stopped by the limiting block 6 and cannot swing downwards. In this embodiment, to simplify the structure and facilitate assembly and disassembly, the safety cage 3 includes left and right split half-cages. Each half-cage includes vertically distributed hoop bars 31 and synchronous reinforcing rods 32 connecting the upper and lower hoop bars 31. One end of each hoop bar 31 is hinged to the straight ladder frame 2, and the other end is connected to the end of the hoop bar 31 of the other half-cage. The upper and lower connecting ends of the two half-cages are also connected by synchronous reinforcing rods 32. Both ends of all synchronous reinforcing rods 32 are hinged. The synchronous reinforcing rods 32 serve both to strengthen the connection and to synchronize the upper and lower parts. See [link to relevant documentation]. Figure 1 and Figure 4 To facilitate hinged installation, both ends of the hoop 31 are bent to form connecting parts 311, see... Figure 1 and Figure 4 Among them, both the hoop 31 and the synchronous reinforcing rod 32 are hinged using bolt assemblies, see... Figure 1 and Figure 4 .

[0037] The straight ladder frame 2 adopts the most common structure, including a pair of vertical bars 21 and horizontal bars 22 connected and distributed between the vertical bars 21. When the straight ladder frame 2 is long, it adopts a longitudinal splicing structure, with adjacent sections of the straight ladder frame 2 connected on both sides by connecting pieces 5 and bolt assemblies, thus facilitating transportation. See [link / details]. Figure 1 and Figure 5 .

[0038] During transportation, all cages 3 are folded flat, taking up little space. On site, the entire ladder is hooked onto the position to be climbed (e.g., hooked onto the opening of a steel column or the eaves of a balcony) using hooks 1. The wall brace 4 is pressed against the wall to stabilize the straight ladder frame 2. All cages 3 swing downwards under their own weight and are stopped by the limiting block 6, so that all cages 3 remain upright and personnel are protected by the cages 3 during the climbing process.

[0039] In this embodiment, as Figure 1 and Figure 4 As shown, the cage 3 is generally square in shape.

[0040] Example 2

[0041] This embodiment discloses another type of foldable steel ladder with a protective cage, such as... Figure 6 As shown, the difference between it and Embodiment 1 is that the cage 3 is in the shape of a cylindrical frame.

[0042] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A foldable steel ladder with a protective cage, comprising a straight ladder frame; hooks for hanging are provided on both sides of the top of the straight ladder frame, characterized in that: The straight ladder frame is equipped with safety cages, limit blocks for limiting the movement of the cages, and wall supports for stabilizing the ladder frame when hooked. The cages are hinged to the ladder frame on both sides, allowing them to swing up and down. The limit blocks are located on both sides of the ladder frame and are distributed near the hinge point between the cages and the ladder frame. The cages can be folded upwards and laid flat. When the cages are upright, they are stopped by the limit blocks and cannot swing downwards. The wall supports are located on both sides of the ladder frame.

2. The foldable steel ladder with a protective cage as described in claim 1, characterized in that: The cage consists of two semi-cages, one on the left and one on the right. Each semi-cage has vertically distributed hoop bars and synchronous reinforcing rods connecting the vertical and horizontal hoop bars. One end of each hoop bar is hinged to the straight ladder frame, and the other end is connected to the hoop bar end of the other semi-cage. The vertical and horizontal connecting ends of the two semi-cages are also connected by synchronous reinforcing rods. Both ends of all synchronous reinforcing rods are hinged.

3. The foldable steel ladder with a protective cage as described in claim 2, characterized in that: Both ends of the hoop are bent to form a connection.

4. The foldable steel ladder with a protective cage as described in claim 3, characterized in that: Both the hoop and the synchronous reinforcing bar are hinged using bolt assemblies.

5. The steel ladder with a foldable protective cage as described in any one of claims 1 to 4, characterized in that: The cage is square in shape.

6. The steel ladder with a foldable protective cage as described in any one of claims 1 to 4, characterized in that: The cage is shaped like a cylindrical frame.

7. The foldable steel ladder with a protective cage as described in claim 1, characterized in that: The straight ladder frame adopts a longitudinal splicing structure, and adjacent straight ladder frames are connected on both sides by connecting plates and bolt assemblies.

8. The steel ladder with a foldable protective cage as described in claim 1, characterized in that: The hook consists of hook steel bars and hook steel plates welded together. The hook steel bars are bent into a U-shape and one side is welded to the hook steel plate. The hook steel plate is used for bolting onto the straight ladder frame.

9. The foldable steel ladder with a protective cage as described in claim 1, characterized in that: The wall bracing consists of wall bracing steel bars and wall bracing steel plates welded together. The wall bracing steel bars are bent into a U-shape and welded to the wall bracing steel plates at both ends. The wall bracing steel plates are used for bolting onto the straight ladder frame.

10. The foldable steel ladder with a protective cage as described in claim 1, characterized in that: A straight ladder frame includes a pair of vertical bars and horizontal bars that connect and are distributed between the vertical bars.

Images