Stairwell operating frame

Abstract

The application provides a stairwell operation frame and belongs to the technical field of building construction. The stairwell operation frame comprises a frame base and at least one frame module unit. The frame base comprises four vertical steel pipes, horizontal connecting rods connected to the vertical steel pipes, and an adjusting base arranged at the bottom of the four vertical steel pipes. The adjusting base is a threaded rod structure comprising a threaded sleeve and an adjusting screw threadedly connected to the threaded sleeve. The bottom of the adjusting screw is provided with a support plate. The adjusting screw adjusts the height of the frame from the ground by rotating into the threaded sleeve. The frame base further comprises plug-in interfaces arranged at the top of the vertical steel pipes. The frame module unit comprises a support frame. The bottom of the support frame is provided with plug-in columns corresponding to the plug-in interfaces at the top of the four vertical steel pipes. The application can be specially used for the special operation environment of stairwells, can be quickly and safely erected, can effectively overcome uneven ground, and has reliable anti-overturning capability.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and specifically to a stairwell operating frame. Background Technology

[0002] In the construction industry, stairwells are core components of vertical transportation within buildings, and their construction processes (such as grinding, masonry, and plastering after the main structure is completed) generally involve working at heights. Due to the special structure of stairwells, the working surfaces are usually located on stair platforms or steps at different heights, and the ground exhibits significant unevenness, which makes the working environment complex and poses high safety risks, especially the prominent hazard of falls from heights.

[0003] Currently, for high-altitude operations in special spaces like stairwells, the industry generally uses two methods to construct operating platforms. One is to erect steel pipe scaffolding. While this method offers relatively good stability, it has several drawbacks. For example, it requires a detailed erection plan in advance, making the process cumbersome. Secondly, the erection process relies on qualified scaffolders, demanding high manpower. Furthermore, the entire erection process is time-consuming and inefficient, especially for frequent, short-term, sporadic work in stairwells, where it is too cumbersome and uneconomical. The other method is to use conventional portal scaffolding, which is relatively convenient and is sometimes used directly by workers in stairwells. However, conventional portal scaffolding is designed for level, solid ground, and faces serious problems when used in stairwells: firstly, inconsistent stair tread heights prevent the scaffolding legs from landing stably, making it difficult to ensure the overall level of the scaffolding and resulting in poor stability; secondly, the narrow and irregularly shaped space of stairwells makes it difficult to effectively implement traditional anti-tipping measures (such as large-area bracing or the space required for diagonal bracing). This makes the scaffolding prone to swaying, tilting, or even collapsing, posing a significant safety hazard.

[0004] In addition, the varying levels of safety awareness among workers at construction sites and their arbitrary operations, coupled with the lack of effective and convenient specialized tools, further increase the difficulty of safety management and the probability of accidents. Summary of the Invention

[0005] Purpose of the invention: The purpose of this invention is to address the shortcomings of existing operating platforms used for high-altitude operations in stairwells, whether steel pipe scaffolding or conventional portal frames, which suffer from complex and time-consuming erection, inability to effectively solve uneven ground problems, difficulty in implementing anti-tipping measures, prominent safety hazards, and high management difficulty. The invention provides a stairwell operating frame that is specifically designed for the special working environment of stairwells, can be erected quickly and safely, effectively overcomes uneven ground, and has reliable anti-tipping capabilities.

[0006] Technical Solution: The present invention provides a stairwell operating frame, comprising a frame body, a frame base, and at least one frame module unit, the frame module unit being detachably mounted on the frame base; the frame base includes four vertical steel pipes, horizontal connecting rods connecting the vertical steel pipes, and an adjusting base disposed at the bottom of the four vertical steel pipes, the adjusting base being used to accommodate stair treads of different heights; the adjusting base is an adjustable screw structure, including a threaded sleeve disposed on the inner wall of the bottom of the vertical steel pipe and an adjusting screw threadedly connected to the threaded sleeve, the bottom of the adjusting screw having a support plate, the adjusting screw adjusting the height of the frame above the ground by the distance it is screwed into the threaded sleeve; the frame base also includes an insertion interface disposed at the top of the vertical steel pipes; the frame module unit includes a support frame, the bottom of the support frame being provided with insertion posts corresponding one-to-one with the insertion interfaces at the top of the four vertical steel pipes.

[0007] Rotating the adjusting screw changes the length of its extension from the threaded sleeve, allowing the support plate to fit snugly against stair treads of varying heights, thus achieving leveling of the scaffold. Inserting the plug-in posts of the scaffold modules into the base connectors quickly expands the scaffold. The adjustable screw structure precisely adapts to uneven stair treads, avoiding the instability of traditional scaffolding that requires wooden blocks. The plug-in connection eliminates the need for bolt tightening, improving erection efficiency.

[0008] Furthermore, anti-tipping devices are installed on both sides of the frame base.

[0009] Furthermore, the anti-tipping device includes retractable anti-tipping struts, which are horizontally mounted on the side walls of the frame base. The anti-tipping struts are horizontally pressed against the walls on both sides of the stairwell, and the pressure is finely adjusted by the bolts on the top support to form a bidirectional abutment force. The bidirectional struts counteract lateral forces (such as swaying when workers move), preventing the frame from tipping over. This is suitable for narrow stairwells and does not require external bracing.

[0010] Furthermore, each end of the anti-tipping strut is equipped with a top support, which is fixedly connected to the end of the anti-tipping strut by bolts. By rotating the bolts at both ends of the strut, the overall length is changed, allowing the top supports to fit tightly against the wall.

[0011] Furthermore, the anti-tipping strut is a threaded telescopic strut with internal threads on the inner walls of both ends. The top support is fixed to bolts with external threads, and the length of the anti-tipping strut is adjusted by screwing the bolts into or out of the internal threads. The threaded engagement allows for millimeter-level length control, ensuring that the top support is completely flush with the wall surface. The friction of the threads naturally locks the strut in place, preventing it from loosening due to operational vibrations.

[0012] Furthermore, climbing frames are installed on both sides of the base of the frame. The climbing frames are equipped with step crossbars, allowing workers to go up and down the operating platform via the climbing frames, avoiding direct climbing of the frame columns.

[0013] Furthermore, an operating platform is laid on top of the four vertical steel pipes or on top of the support frame.

[0014] Furthermore, the workbench is made of a mesh plate or a steel plate, with the mesh plate providing a non-slip working surface and the steel plate used to support heavy tools.

[0015] Furthermore, support rods are intersecting on both the front and rear sides of the frame base. The intersecting rods form a triangular stable structure to resist bending moments in the front and rear directions, reduce the lateral sway of the frame, and prevent the frame from becoming unstable due to worker collisions.

[0016] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows:

[0017] (1) In this invention, the frame base is made of four vertical steel pipes and horizontal connecting rods to form a rigid frame. Combined with the adjustable screw type adjustment base, it can accurately adapt to the height difference of different stair steps and ensure that the frame remains horizontally stable in complex terrain. The two-way anti-overturning device is tightened against the wall by the extension and retraction of the screw to form an active anti-lateral force structure. Compared with the traditional portal scaffolding that relies on external bracing, the safety is improved and it is especially suitable for high-altitude operations in narrow stairwells.

[0018] (2) The present invention uses a standardized matching design of plug-in columns and plug-in interfaces. Multi-layer frames are stacked with a unified interface, which can achieve height expansion without additional connectors. Each layer has an independent anti-tipping device to ensure overall stability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the frame base in this invention;

[0020] Figure 2 This is a structural schematic diagram of the frame module unit in this invention;

[0021] Figure 3 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0022] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the embodiments described.

[0023] like Figure 1The frame base 1 shown includes four vertical steel pipes 11, horizontal connecting rods 12, an adjustable base 13, a connector 14, an anti-tipping device 3, and a climbing frame 4. The four vertical steel pipes are arranged in a rectangular shape, serving as the main support structure of the frame, and their height can be adjusted according to the floor height of the stairwell. The horizontal connecting rods 12 are welded horizontally and vertically or connected by fasteners to form a stable frame and prevent deformation of the frame. The adjustable base 13 includes a threaded sleeve 131 welded to the inner wall of the bottom of each vertical steel pipe 11, with an adjusting screw 132 threadedly engaged with the threaded sleeve 131, and an anti-slip support plate 133 welded to the bottom; by rotating the adjusting screw 132, the height of the four corners of the frame can be adjusted to accommodate different stair tread height differences. The top of the vertical steel pipe 11 is provided with a sleeve with a pin hole for docking with the connector 22 of the frame module unit 2. An anti-tipping device 3 is provided on each side of the frame, including an anti-tipping support rod 31, with top supports 32 installed at both ends of the support rod. The support rod 31 is a screw-type telescopic structure. Its length is adjusted by rotation, ensuring the top support 32 is flush against the wall to prevent the frame from tilting. The climbing frame 4 is obliquely welded or bolted to both sides of the frame and has multiple step crossbars 142 for easy worker access to and from the platform. Support rods 6 are cross-shaped and installed on both the front and rear sides of the frame base.

[0024] like Figure 2 The frame module unit 2 shown includes a support frame 21, plug-in posts 22, and an operating platform 5. The support frame 21 is a rectangular frame welded from steel pipes, with dimensions matching the frame base 1, allowing for multi-layer stacking. The plug-in posts 22 are welded to the four bottom corners of the support frame 21, with a diameter slightly smaller than the plug-in interface 14, and are fixed by pins after insertion. The operating platform 5 is located on top of the support frame 21 and can be made of breathable and non-slip mesh or high-load-bearing steel plate. If multi-layer operation is required, plug-in interfaces can be reserved on the top of the support frame 21 for connection of upper-layer frame module units.

[0025] like Figure 3 The illustrated stairwell operating frame has its connecting posts 22 of the frame module unit 2 inserted into the connectors 14 of the frame base 1, and locked with pins to form a stable connection. If the frame needs to be heightened, a second layer can be stacked on top of the first layer of frame module units, using the same insertion method. For multi-layered frames, each layer must be equipped with an anti-tipping device 3 to ensure overall stability.

[0026] The setup method is as follows:

[0027] I. Construction of the frame base

[0028] Connect the four vertical steel pipes 11 to form a rectangular frame through the horizontal connecting rods 12, ensuring that the four corners of the frame are level, and use a level to calibrate if necessary; rotate the adjusting screws 132 to make the four corner support plates 133 contact the ground and adjust the frame to be level; install the anti-tipping support rods 31 horizontally on both sides of the frame, rotate the bolts at both ends to make the top support 32 close to the wall; install the climbing frame and support rods 6.

[0029] II. Construction of the Frame Module Units

[0030] First, assemble the support frame 21. Align the insertion posts 22 of the support frame 21 with the insertion interfaces 14 of the base 1, insert them, and then insert the locking pins. Lay the operating platform 5 grid plate or steel plate on top of the support frame 21. If multiple layers are required, repeat the assembly and fixing steps of the support frame 21. Each layer must be equipped with anti-overturning struts 31 to ensure overall anti-overturning capability.

[0031] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A stairwell operating frame, comprising a frame body, characterized in that: The frame includes a frame base and at least one frame module unit, the frame module unit being detachably mounted on the frame base; The frame base includes four vertical steel pipes (11), a horizontal connecting rod (12) connecting the vertical steel pipes (11), and an adjusting base (13) set at the bottom of the four vertical steel pipes (11). The adjusting base (13) is used to adapt to stair treads of different heights. The adjusting base (13) is an adjustable screw structure, including a threaded sleeve (131) set on the inner wall of the bottom of the vertical steel pipe (11) and an adjusting screw (132) threadedly connected to the threaded sleeve (131). The bottom of the adjusting screw (132) has a support plate (133). The adjusting screw (132) adjusts the height of the frame from the ground by screwing into the threaded sleeve (131). The frame base also includes an insertion interface (14) set at the top of the vertical steel pipes (11). The frame module unit includes a support frame (21), and the bottom of the support frame (21) is provided with plug-in posts (22) that correspond one-to-one with the plug-in interfaces (14) at the top of the four vertical steel pipes (11).

2. The stairwell operating frame according to claim 1, characterized in that: Anti-tipping devices are provided on both sides of the frame base.

3. A stairwell operating frame according to claim 2, characterized in that: The anti-tipping device includes a retractable anti-tipping support rod (31), which is horizontally arranged on the side wall of the frame base.

4. A stairwell operating frame according to claim 3, characterized in that: The anti-overturning support rod (31) is provided with top supports (32) at both ends, and the top supports (32) are fixedly connected to the ends of the anti-overturning support rod (31) by bolts.

5. A stairwell operating frame according to claim 4, characterized in that: The anti-overturning support rod (31) is a screw-type telescopic rod with internal threads on the inner walls at both ends. The top support (32) is fixed on a bolt with external threads. The length of the anti-overturning support rod (31) can be adjusted by screwing the bolt into or out of the internal threads.

6. A stairwell operating frame according to claim 1, characterized in that: Climbing frames (4) are provided on both sides of the base of the frame.

7. A stairwell operating frame according to claim 1, characterized in that: An operating platform (5) is laid on the top of the four vertical steel pipes (11) or on the top of the support frame (21).

8. A stairwell operating frame according to claim 7, characterized in that: The operating table (5) is a grid plate or a steel plate.

9. A stairwell operating frame according to claim 1, characterized in that: Support rods (6) are provided crosswise on both the front and rear sides of the frame base.

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