Elevator shaft horizontal protection platform structure

Abstract

This utility model discloses a horizontal protective platform structure for elevator shafts, comprising: a floor slab on one side of the elevator shaft, a shear wall on the other side of the elevator shaft, a main keel connected to the top of the elevator shaft opening and positioned between the floor slab and the shear wall, a secondary keel connected to the top of the main keel, a timber beam connected to the top of the secondary keel, and a platform template positioned on top of the timber beam. At least two main keels are provided, arranged parallel to each other. One end of the main keel is embedded in a pre-reserved groove in the shear wall, and the other end overlaps the top surface of the floor slab. The end of the main keel adjacent to the floor slab is connected to the inner wall of the elevator shaft on one side of the floor slab via double anti-slip buckles. The pre-reserved groove is a circular or square notch opened in the shear wall, and the main keel passes through and connects to the pre-reserved groove. This utility model solves the problems of insecure positioning and fixing of the elevator shaft platform plate, waste of embedded steel bars, and non-reusability in the prior art by interlocking the main keel with the pre-reserved groove in the shear wall.

Description

Technical Field

[0001] This utility model relates to the field of elevator shaft construction protection technology, and in particular to a horizontal protection platform structure for elevator shafts. Background Technology

[0002] In elevator shaft construction, horizontal protection is a crucial aspect of ensuring operational safety. Currently, the mainstream industry practice typically employs continuous full-span steel pipe scaffolding or pre-embedded steel mesh for protection.

[0003] Among them, the continuous full-span steel pipe scaffolding protection needs to be erected continuously from the bottom of the elevator pit to the top floor to form an ultra-high frame. This solution consumes a lot of materials, has low erection and dismantling efficiency, and the overall erection and dismantling process is complicated, occupies vertical transportation resources, and affects the overall construction progress.

[0004] The method of pre-embedded steel mesh protection involves pre-embedding steel mesh during the pouring of each layer of concrete structure as a support for subsequent protection. However, this method is not economical, as the pre-embedded steel bars need to be completely cut off later and can only be recycled as scrap steel, resulting in a serious waste of steel materials.

[0005] In summary, existing technologies generally suffer from significant safety hazards and material waste, necessitating a horizontal protective platform structure for elevator shafts that can be fixed in place and is easy to disassemble and assemble. Utility Model Content

[0006] This utility model provides a horizontal protective platform structure for elevator shafts, which solves the problems of unstable limiting and fixing of elevator shaft platform plates, waste of pre-embedded steel bars, and non-reusability in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution, including:

[0008] The floor slab on one side of the elevator shaft, the shear wall on the other side of the elevator shaft, the main keel connected to the top of the elevator shaft opening and set between the floor slab and the shear wall, the secondary keel connected to the top of the main keel, the timber connected to the top of the secondary keel, and the platform formwork set on the top of the timber.

[0009] At least two main keels are provided, and multiple main keels are arranged in parallel to each other. One end of the main keel is embedded in the reserved groove of the shear wall, and the other end overlaps the top surface of the floor slab.

[0010] The main keel is detachably connected to a double anti-slip buckle at one end near the floor slab. The double anti-slip buckle is snapped onto the inner wall of the elevator shaft on one side of the floor slab.

[0011] The reserved groove is a circular or square notch opened in the shear wall, and the main keel is connected through the reserved groove and an anti-slip pad is provided in the gap between the two.

[0012] Furthermore, at least two secondary keels are provided, and multiple secondary keels are arranged parallel to each other. The secondary keels are orthogonally erected above the main keel and connected by fasteners.

[0013] The fastener is a cross-shaped fastener, and the main keel and the secondary keel are detachably connected by the cross-shaped fastener.

[0014] Furthermore, the timber is laid orthogonally above the secondary joists; the platform template is densely laid on top of the timber.

[0015] The timber is laid in a direction parallel to the main joists, and the spacing between the timbers is less than the spacing between the main joists.

[0016] Furthermore, a snap-fit ​​groove is formed on one side of the platform template where it overlaps with the timber, and the bottom surface of the timber is snapped into the snap-fit ​​groove.

[0017] Furthermore, the depth of the snap-fit ​​groove is not less than half the height of the cross-section of the timber.

[0018] Furthermore, the depth of the reserved groove is not less than 50mm, and the size of the reserved groove is larger than the cross-sectional size of the main keel.

[0019] Furthermore, the anti-slip pad is pre-connected to the main keel, and its outer side is set as a rough surface, which is pressed and connected to the inner wall of the reserved groove.

[0020] Furthermore, the length of the main keel overlapping the floor slab shall not be less than 200mm.

[0021] Furthermore, the double anti-slip buckles are provided in pairs, with the outermost buckle's outer wall tightly attached to the inner wall of the elevator shaft.

[0022] The beneficial effects of this utility model are reflected in:

[0023] 1) By setting up a pre-reserved groove, this utility model can effectively fix one end of the main keel and connect the other end to the floor slab. The platform's own weight forms a stable load-bearing foundation, which can greatly ensure the stability of the platform.

[0024] 2) This utility model uses double anti-slip buckles to provide stability to the platform by utilizing the overlapping of the main keel for positioning and by further preventing axial sliding during use.

[0025] 3) The overall installation structure of this utility model is detachable, which can be installed independently on each floor and adapted to the size on site, making it convenient to use local materials and reusable.

[0026] Other features and advantages of the present invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention; the main objectives and other advantages of the invention may be realized and obtained by means of the methods particularly pointed out in the description. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of the elevator shaft horizontal protection platform structure of this utility model.

[0028] Figure 2 This is a top view of the elevator shaft horizontal protection platform structure of this utility model.

[0029] Figure 3 yes Figure 1 A magnified view of a portion of region A in the middle.

[0030] Figure 4 yes Figure 1 A magnified view of a portion of region B in the middle.

[0031] Figure 5 This is a schematic diagram showing the connection between the platform template and the timber of this utility model.

[0032] Attached diagram labels: 1-Main keel, 11-Double anti-slip buckle, 2-Reserved groove, 21-Anti-slip pad, 3-Secondary keel, 31-Cross fastener, 4-Timber, 5-Platform template, 51-Snap-fit ​​groove, 6-Shear wall, 7-Floor slab, 8-Elevator shaft. Detailed Implementation

[0033] The technical solution of this utility model will be described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of this utility model, and should not be construed as limiting the technical solution of this utility model.

[0034] like Figure 1-4 As shown, this utility model provides a horizontal protective platform structure for an elevator shaft, including: a floor slab on one side of the elevator shaft, a shear wall on the other side of the elevator shaft, a main keel connected to the top of the elevator shaft opening and located between the floor slab and the shear wall, a secondary keel connected to the top of the main keel, a timber beam connected to the top of the secondary keel, and a platform template located on the top of the timber beam.

[0035] At least two main keels are set, and multiple main keels are set parallel to each other. The spacing between the main keels is 800mm. One end of the main keel is embedded in the reserved groove of the shear wall, and the other end overlaps the top surface of the floor slab. The main keel uses steel pipes as the main load-bearing body of the protective platform, and the distance from the edge of the structure is less than or equal to 200mm.

[0036] The main keel has a detachable double anti-slip buckle at the end near the floor slab. The double anti-slip buckle is snapped onto the inner wall of the elevator shaft on one side of the floor slab.

[0037] The pre-reserved groove is a circular or square notch created in the shear wall. The main keel is connected through the pre-reserved groove, and an anti-slip pad is placed in the gap between the two. The anti-slip pad can be a rubber pad, nylon pad, felt, or a metal sheet with a roughened surface, etc. It is used to fill the small gaps between the groove and the main keel, increasing the friction coefficient of the contact surface. The height and width of the pre-reserved groove are 70mm, the depth of the pre-reserved groove is not less than 50mm, and the size of the pre-reserved groove is larger than the cross-sectional size of the main keel. The main keel penetrates the pre-reserved groove to a depth of greater than or equal to 50mm.

[0038] At least two secondary keels are required, and multiple secondary keels are set parallel to each other. The spacing between secondary keels is 800mm. The secondary keels are orthogonally erected above the main keels and connected by fasteners. The main keels are made of steel pipes, preferably ordinary steel pipes with a diameter of 48.3mm, and the distance from the edge of the structure is less than or equal to 200mm.

[0039] The fastener is a cross-shaped fastener, and the main keel and the secondary keel can be detachably connected by the cross-shaped fastener.

[0040] Timber is laid orthogonally above the secondary joists; platform formwork is densely laid on top of the timber, preferably using timber with a cross-sectional length of 40mm × 80mm, with a distance of less than or equal to 100mm from the edge of the structure. The timber is laid in a direction parallel to the main joists, and the spacing between timber is less than the spacing between the main joists. The spacing between timber is 400mm, which significantly reduces the deformation of the formwork under construction loads, ensures the flatness and safety of the protective platform surface, and prevents the platform formwork from collapsing.

[0041] The platform template has a pre-formed interlocking groove on one side where it overlaps with the timber. The bottom surface of the timber interlocks with this groove, eliminating the need for additional connectors and the traditional nailing or bolting process. The timber can be directly embedded into the groove, significantly improving overlap efficiency and shortening the construction period. The depth of the interlocking groove is no less than half the height of the timber cross-section, forming a strong restraint that effectively resists lateral displacement or detachment during construction, making it particularly suitable for working environments with strong vibration loads.

[0042] Thick, waterproof plywood or bamboo plywood can be used for the platform formwork. It is preferable to use 15mm thick wooden formwork, with a distance of less than or equal to 50mm from the edge of the structure. Nails or hemp ropes can be used to help fix the platform formwork to the timber.

[0043] The anti-slip pad is pre-attached to the main keel, and the outer side is set as a rough surface. The rough surface is pressed and attached to the inner wall of the reserved groove.

[0044] The length of the main keel overlapping the floor slab shall not be less than 200mm.

[0045] The double anti-slip buckle is a pair of anti-slip fasteners, with the outermost fastener's outer wall tightly attached to the inner wall of the elevator shaft.

[0046] In addition, the platform units can be prefabricated and assembled in advance, and each layer of the independent platform is independent, enabling rapid installation and dismantling.

[0047] This invention also has technical extensions for certain special environments. For example, when applied to elevator shafts with three shear walls, grooves are pre-reserved on both sides of the opposing shear walls. A certain elevation difference must be set between the grooves on both sides, requiring the main steel pipe to be slightly tilted to simultaneously embed into both grooves. This wedge effect created by the elevation difference design utilizes the slight downward tendency of the steel pipe's own weight and construction loads to make the steel pipe increasingly secure within the grooves, greatly enhancing the overall stability and anti-lateral displacement capability of the system, especially suitable for deep and narrow shafts.

[0048] In actual construction, the horizontal protective platform of this utility model adopts a layer-by-layer follow-up operation mode. Specifically, when the main structure is constructed to the Nth floor, the horizontal protective platform of the N-1th floor is erected at the elevator shaft opening.

[0049] A pre-reserved groove is formed in the shear wall of the N-1th floor. One end of the main keel is embedded into the pre-reserved groove of the shear wall of the N-1th floor, and the other end is placed on the slab surface of the N-1th floor, ensuring that its length exceeds the edge of the floor slab surface. Secondary keels are laid orthogonally on the main keel at a set interval, and fastened with fasteners at each intersection. Timber is laid on the secondary keels at a set interval. Finally, platform templates are densely laid and nailed on the timber to complete the protection of this layer.

[0050] Before the main structure is capped and the elevator installation unit enters the site, the platform structure needs to be dismantled. The dismantling will proceed from the top floor down layer by layer. The dismantling sequence is as follows: pry open the formwork → remove the timber → remove the lower keel → pull out the main keel to detach it from the reserved groove and floor slab. The dismantled materials will not have any structural damage and can be classified, recycled and reused, which further improves the economic efficiency of this solution.

[0051] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any changes or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this utility model should be included within the scope of protection of this utility model.

Claims

1. A horizontal protective platform structure for elevator shafts, characterized in that, Includes a floor slab (7) set on one side of the elevator shaft (8), a shear wall (6) set on the other side of the elevator shaft (8), a main keel (1) connected to the top of the elevator shaft (8) and set between the floor slab (7) and the shear wall (6), a secondary keel (3) connected to the top of the main keel (1), a timber (4) connected to the top of the secondary keel (3), and a platform template (5) set on the top of the timber (4); At least two main keels (1) are provided, and multiple main keels (1) are arranged in parallel to each other. One end of the main keel (1) is embedded in the reserved groove (2) of the shear wall (6), and the other end is attached to the top surface of the floor slab (7). The main keel (1) is detachably connected to a double anti-slip buckle (11) at one end near the floor slab (7). The double anti-slip buckle (11) is snapped onto the inner wall of the elevator shaft (8) on one side of the floor slab (7). The reserved groove (2) is a circular or square notch opened in the shear wall (6). The main keel (1) is connected to the reserved groove (2) and an anti-slip pad (21) is provided in the gap between the two.

2. The elevator shaft horizontal protection platform structure as described in claim 1, characterized in that, At least two secondary keels (3) are provided, and multiple secondary keels (3) are arranged in parallel to each other. The secondary keels (3) are orthogonally erected above the main keel (1) and connected by fasteners. The fastener is a cross-shaped fastener (31), and the main keel (1) and the secondary keel (3) are detachably connected by the cross-shaped fastener (31).

3. The elevator shaft horizontal protection platform structure as described in claim 1, characterized in that, The timber (4) is laid orthogonally above the secondary keel (3); the platform template (5) is densely laid on top of the timber (4); The timber (4) is laid in a direction parallel to the main keel (1), and the spacing between the timber (4) is less than the spacing between the main keel (1).

4. The elevator shaft horizontal protection platform structure as described in claim 3, characterized in that, The platform template (5) overlaps with the timber (4) on one side, forming a snap-fit ​​groove (51), and the bottom surface of the timber (4) is snap-fitted to the snap-fit ​​groove (51).

5. The elevator shaft horizontal protection platform structure as described in claim 4, characterized in that, The depth of the snap-fit ​​groove (51) is not less than half the cross-sectional height of the timber (4).

6. The elevator shaft horizontal protection platform structure as described in claim 1, characterized in that, The depth of the reserved groove (2) is not less than 50mm, and the size of the reserved groove (2) is greater than the cross-sectional size of the main keel (1).

7. The elevator shaft horizontal protection platform structure as described in claim 6, characterized in that, The anti-slip pad (21) is pre-connected to the main keel (1), and the outer side is set as a rough surface, which is pressed and connected to the inner wall of the reserved groove (2).

8. The elevator shaft horizontal protection platform structure as described in claim 1, characterized in that, The length of the main keel (1) overlapping the floor slab (7) shall not be less than 200mm.

9. The elevator shaft horizontal protection platform structure as described in claim 1, characterized in that, The double anti-slip buckle (11) is a pair of anti-slip buckles, and the outermost buckle is in close contact with the inner wall of the elevator shaft (8).

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