Height-adjustable ladder cage device
By designing an adjustable-height ladder cage device, the problem of difficulty in adjusting the height of traditional ladder cages during construction was solved, enabling flexible adaptation to the needs of the construction area and improving safety and resource utilization efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA HUASHI ENTERPRISES CO LTD (SICHUAN)
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional ladder cages are difficult to adjust in height and can only be increased by stacking them upwards, which cannot meet the actual needs of on-site construction and has poor overall stability.
A ladder cage device comprising a base, a platform frame, and a telescopic staircase was designed. The height of the ladder cage can be adjusted by setting a sliding upper platform frame and a telescopic crossbar, and a safety net is provided to improve safety.
It enables flexible adjustment of the cage height to meet the needs of different construction areas, reduce resource waste, and improve construction safety.
Smart Images

Figure CN224134296U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of temporary steel technology for construction sites, and more specifically, to a height-adjustable ladder cage device. Background Technology
[0002] A ladder cage is a temporary structure specifically designed for building construction, primarily used in the construction of high-rise buildings, bridges, and slope protection projects. It consists of a series of modular structures made of reinforced concrete or steel profiles, resembling a ladder or cage in shape, hence the name "ladder cage." Its components are connected by welding, splicing, bolting, etc., and are connected to the ground via a base and to the main building or slope via wall ties. It is a four-sided cage-like safety steel structure providing access for construction workers. It can also serve as a construction platform and support, facilitating construction and installation work while protecting workers and equipment from external environmental hazards or potential dangers during construction.
[0003] However, traditional ladder cages are difficult to adjust in height and can only be increased by stacking them upwards. This is especially problematic for large and dangerous projects such as deep foundation pits and high formwork that require access to different levels. Due to the variability of key parameters such as the depth of the deep foundation pit and the height of the high formwork, the height of the modular ladder cage cannot meet the actual needs of on-site construction. The erection of scaffold-style ladder cages is time-consuming, labor-intensive, and has poor overall stability.
[0004] In view of the above, this application is hereby submitted. Utility Model Content
[0005] The technical problem this invention aims to solve is that traditional ladder cages are difficult to adjust in height and can only be increased by stacking them upwards, which cannot meet the actual needs of on-site construction. The purpose is to provide a height-adjustable ladder cage device. By setting up telescopic stairs and changing the movement of the platform frame, the ladder cage can meet the needs of operation at different heights, solving the problem that traditional ladder cages are difficult to raise in height during on-site construction. Moreover, it is easy to disassemble and can be reused, reducing resource waste.
[0006] This utility model is achieved through the following technical solution:
[0007] A height-adjustable ladder cage device includes a base on which a platform frame is provided;
[0008] The platform frame includes an upper platform frame and a lower platform frame arranged parallel to each other, and the upper platform frame and the lower platform frame are connected by a column; the upper platform frame is slidably connected to the column, and the upper platform frame can move up and down along the column;
[0009] A retractable staircase is inclinedly provided between one end of the upper platform frame and the opposite end of the lower platform frame.
[0010] This utility model, by setting up a telescopic staircase and a movable platform frame, enables the ladder cage to meet the operational needs at different heights, solving the problem that traditional ladder cages are difficult to raise the structural height during on-site construction. Furthermore, it is easy to disassemble and can be reused, reducing resource waste.
[0011] In one specific embodiment, an upper telescopic horizontal plate is provided at one end of the upper platform frame, and a lower telescopic horizontal plate is provided at the opposite end of the lower platform frame. The upper and lower telescopic horizontal plates can be extended or shortened in the horizontal direction to adjust the lateral distance between them.
[0012] In one specific embodiment, protective netting is provided around the outer three sides of both the upper and lower platform frames.
[0013] In one specific embodiment, a protective net clip bracket is provided on the outer side of the upper platform frame and the lower platform frame, and the protective net is installed on the protective net clip bracket.
[0014] This invention, through the installation of the protective net, can prevent falls during construction and improve safety.
[0015] In one specific implementation, the upper and lower ends of the telescopic staircase are detachably connected to the upper telescopic horizontal plate and the lower telescopic horizontal plate, respectively.
[0016] In one specific implementation, the upper and lower ends of the telescopic staircase are connected to the upper telescopic horizontal plate and the lower telescopic horizontal plate by snap-fit connections.
[0017] In one specific embodiment, the telescopic staircase includes two longitudinal bars with telescopic structures and a tread that can be detachably installed between the two longitudinal bars.
[0018] In one specific embodiment, the pedal has protruding ridges at both ends, and the inner sidewall of the longitudinal bar has a groove, the protruding ridges being able to be horizontally inserted between the two longitudinal bars along the groove.
[0019] In one specific embodiment, the base is fixed to the installation area by bolts.
[0020] In one specific embodiment, the lower platform frame is snapped onto the base and fixed by fastening bolts.
[0021] In use, the base is fixed to the ladder cage installation area, and then the platform frame is connected to the base. High-strength bolts are then used to install the uprights on the platform frame. The height of the upper platform frame on the uprights is adjusted according to the required construction height. The protective netting is then placed in the protective netting clip and the telescopic ladder is installed. The upper and lower telescopic horizontal plates are adjusted to appropriate lengths and then clipped onto the telescopic ladder to complete the ladder cage installation, facilitating personnel movement and climbing. This makes it easier for workers to go up and down stairs and for transporting construction materials.
[0022] This utility model features a detachable telescopic staircase that can be adjusted according to the height of the installation area to adapt to different construction areas. When it is necessary to adjust the height of the telescopic staircase according to the actual needs of the installation area, firstly, the height of the upper platform frame is adjusted by sliding it up and down along the column, and then the lengths of the upper and lower telescopic horizontal plates are adjusted to facilitate the adaptive installation of the telescopic staircase.
[0023] This invention, through the installation of the protective net, can prevent falls during construction and improve safety.
[0024] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0025] 1. The present invention provides a height-adjustable ladder cage device, which, by setting the telescopic staircase and the platform frame to move and change, enables the ladder cage to meet the operation requirements at different heights, solves the problem that traditional ladder cages are difficult to raise the structural height during on-site construction, and is easy to disassemble and reuse, reducing resource waste.
[0026] 2. The present invention provides a height-adjustable ladder cage device. By setting a detachable telescopic ladder, when it is necessary to adjust the height of the telescopic ladder according to the actual needs of the installation area, the height of the upper platform frame is first adjusted by sliding up and down along the column, and then the length of the upper telescopic horizontal plate and the lower telescopic horizontal plate are adjusted, so as to facilitate the adaptive installation of the telescopic ladder and adapt it to different construction areas.
[0027] 3. The height-adjustable ladder cage device provided in this embodiment of the utility model can prevent falls during construction by installing the protective net, thereby improving safety. Attached Figure Description
[0028] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model 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.
[0029] Figure 1 This is a schematic diagram of the ladder cage device provided in an embodiment of the present utility model;
[0030] Figure 2 A schematic diagram of the height adjustment process of the ladder cage device provided in this embodiment of the utility model;
[0031] Figure 3 A schematic diagram of a telescopic staircase structure provided for an embodiment of this utility model.
[0032] The attached diagram shows the markings and corresponding component names:
[0033] 1-Base, 2-Safety net, 3-Platform frame, 4-Post, 5-Bolt, 6-Retractable staircase, 7-Safety net clip bracket;
[0034] 31-Upper platform frame, 32-Lower platform frame, 311-Upper telescopic cross plate, 321-Lower telescopic cross plate;
[0035] 61-Longitudinal bar, 62-Pedal. Detailed Implementation
[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.
[0037] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, well-known structures are not specifically described in order to avoid obscuring the present invention.
[0038] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0039] In the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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 limiting the scope of protection of this utility model.
[0040] Example 1
[0041] like Figures 1-3 As shown in the figure, the present utility model provides a height-adjustable ladder cage device, including a base 1, on which a platform frame 3 is provided;
[0042] The platform frame 3 includes an upper platform frame 31 and a lower platform frame 32 arranged parallel to each other, and the upper platform frame 31 and the lower platform frame 32 are connected by a column 4; the upper platform frame 31 is slidably connected to the column 4, and the upper platform frame 31 can move up and down along the column 4.
[0043] A telescopic staircase 6 is inclinedly provided between one end of the upper platform frame 31 and the opposite end of the lower platform frame 32.
[0044] This utility model, by setting up a telescopic staircase and a movable platform frame, enables the ladder cage to meet the operational needs at different heights, solving the problem that traditional ladder cages are difficult to raise the structural height during on-site construction. Furthermore, it is easy to disassemble and can be reused, reducing resource waste.
[0045] In one specific embodiment, an upper telescopic horizontal plate 311 is provided at one end of the upper platform frame 31, and a lower telescopic horizontal plate 321 is provided at the opposite end of the lower platform frame 32. The upper telescopic horizontal plate 311 and the lower telescopic horizontal plate 321 can be extended or shortened in the horizontal direction to adjust the lateral distance between the upper telescopic horizontal plate 311 and the lower telescopic horizontal plate 321.
[0046] In one specific embodiment, protective nets 2 are provided on the three outer sides of the upper platform frame 31 and the lower platform frame 32.
[0047] In one specific embodiment, a protective net clip bracket 7 is provided on the outer side of the upper platform frame 31 and the lower platform frame 32, and the protective net 2 is installed on the protective net clip bracket 7.
[0048] This invention, through the installation of the protective net, can prevent falls during construction and improve safety.
[0049] In one specific embodiment, the upper and lower ends of the telescopic staircase 6 are detachably connected to the upper telescopic horizontal plate 311 and the lower telescopic horizontal plate 321, respectively.
[0050] In one specific embodiment, the upper and lower ends of the telescopic staircase 6 are connected to the upper telescopic horizontal plate 311 and the lower telescopic horizontal plate 321 by snap fasteners.
[0051] In one specific embodiment, the telescopic staircase 6 includes two longitudinal bars 61 with telescopic structures and a tread 62 detachably installed between the two longitudinal bars 61.
[0052] In one specific embodiment, the pedal 62 has protruding ridges at both ends, and the inner sidewall of the longitudinal rod 61 has a groove, the protruding ridges being able to be horizontally inserted between the two longitudinal rods 61 along the groove.
[0053] In one specific embodiment, the base 1 is fixed to the installation area by bolts 5.
[0054] In one specific embodiment, the lower platform frame 32 is snapped onto the base 1 and fixed by fastening bolts.
[0055] In use, the base is fixed to the ladder cage installation area, and then the platform frame is connected to the base. High-strength bolts are then used to install the uprights on the platform frame. The height of the upper platform frame on the uprights is adjusted according to the required construction height. The protective netting is then placed in the protective netting clip and the telescopic ladder is installed. The upper and lower telescopic horizontal plates are adjusted to appropriate lengths and then clipped onto the telescopic ladder to complete the ladder cage installation, facilitating personnel movement and climbing. This makes it easier for workers to go up and down stairs and for transporting construction materials.
[0056] This utility model features a detachable telescopic staircase that can be adjusted according to the height of the installation area to adapt to different construction areas. When it is necessary to adjust the height of the telescopic staircase according to the actual needs of the installation area, firstly, the height of the upper platform frame is adjusted by sliding it up and down along the column, and then the lengths of the upper and lower telescopic horizontal plates are adjusted to facilitate the adaptive installation of the telescopic staircase.
[0057] This invention, through the installation of the protective net, can prevent falls during construction and improve safety.
[0058] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A height adjustable cage device, characterized in that, Includes a base (1), on which a platform frame (3) is provided; The platform frame (3) includes an upper platform frame (31) and a lower platform frame (32) arranged parallel to each other. The upper platform frame (31) and the lower platform frame (32) are connected by a column (4). The upper platform frame (31) is slidably connected to the column (4). The upper platform frame (31) can move up and down along the column (4). A telescopic staircase (6) is inclinedly provided between one end of the upper platform frame (31) and the opposite end of the lower platform frame (32).
2. A height adjustable ladder cage assembly according to claim 1, wherein, One end of the upper platform frame (31) is provided with an upper telescopic horizontal plate (311), and the other end of the lower platform frame (32) is provided with a lower telescopic horizontal plate (321). The upper telescopic horizontal plate (311) and the lower telescopic horizontal plate (321) can be extended or shortened in the horizontal direction to adjust the lateral distance between the upper telescopic horizontal plate (311) and the lower telescopic horizontal plate (321).
3. A height adjustable ladder cage assembly according to claim 2, wherein, The upper platform frame (31) and the lower platform frame (32) are all surrounded by protective nets (2) on three sides.
4. A height adjustable ladder cage assembly according to claim 3, wherein, A protective net card holder (7) is provided on the outside of the upper platform frame (31) and the lower platform frame (32), and the protective net (2) is installed on the protective net card holder (7).
5. A height adjustable ladder cage assembly according to claim 3, wherein, The upper and lower ends of the telescopic staircase (6) are detachably connected to the upper telescopic horizontal plate (311) and the lower telescopic horizontal plate (321), respectively.
6. A height adjustable ladder cage assembly according to claim 5, wherein, The upper and lower ends of the telescopic staircase (6) are connected to the upper telescopic horizontal plate (311) and the lower telescopic horizontal plate (321) by snap fasteners.
7. The height adjustable ladder cage assembly of claim 1, wherein, The telescopic staircase (6) includes two longitudinal bars (61) with telescopic structures and a tread (62) that can be detachably installed between the two longitudinal bars (61).
8. The height-adjustable ladder cage device according to claim 7, characterized in that, The pedal (62) has protruding ridges at both ends, and the inner wall of the longitudinal bar (61) has a groove. The protruding ridges can be horizontally inserted between the two longitudinal bars (61) along the groove.
9. The height adjustable ladder cage assembly of claim 1, wherein, The base (1) is fixed to the installation area by bolts (5).
10. The height adjustable ladder cage assembly of claim 2, wherein, The lower platform frame (32) is snapped onto the base (1) and fixed by fastening bolts.