Detachable anti-falling device for attached lifting scaffold

Abstract

The utility model provides a detachable anti -falling device for attached type lift scaffold, including support vertical pole, foldable net rack, support vertical pole is fixed between two layers foot hand plate of attached type lift scaffold perpendicularly through connecting fastener, foldable net rack includes the rectangular steel pipe frame formed by foot hand league long tube and foot hand league short pipe through right angle fastener connection, the rectangular steel pipe frame is laid with anti -falling net, and the other end of two foot hand league short pipes of rectangular steel pipe frame all are hinged with support vertical pole through rotary fastener, and the hinge uses foot hand league short pipe to extend rotary fastener 200~250mm, and the rotary fastener installation position is within 150mm range in foot hand plate bottom part, the utility model can improve the frame body sealing property and high altitude falling protection level etc. during the main body construction stage, and foldable net rack can automatically switch into cantilever structure when failing to attach building outer facade, maintains continuous anti -falling function, and can adapt to curved surface, overhanging etc. special-shaped building facade.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and in particular relates to a detachable anti-fall device for attached lifting scaffolding. Background Technology

[0002] Attached lifting scaffolding is the mainstream choice for modern high-rise and super high-rise building construction due to its high safety and cost-effectiveness. The height difference between each layer of scaffolding in attached lifting scaffolding is 2 meters. According to the national standards "Classification of High-Altitude Operations" (GB / T 3608-2019) and "Technical Specification for Safety of High-Altitude Operations in Building Construction" (JGJ 80-2016), any operation performed at a height of 2 meters or more above the fall height reference plane is considered a high-altitude operation and requires specific safety protection.

[0003] In current applications, attached lifting scaffolds typically only have flip-up fall arrestors installed on the bottom and middle scaffold boards to seal the gap between the scaffold and the building structure and provide fall protection. However, this traditional fall arrest design has certain limitations. First, insufficient protective coverage: the height difference between the high-rise working surface and the nearest flip-up board often exceeds 2 meters. According to regulations, fall arrest measures must be added to the remaining working levels without flip-up boards. Second, poor dynamic adaptability: after the scaffold is lifted, it is difficult for the scaffold boards on each level to align synchronously with the building floor slabs. If flip-up boards are installed on every level, it will significantly increase costs and hinder the vertical movement efficiency of construction workers. Finally, limited economy and adaptability: the customized processing cost of flip-up boards is high, and fixed structures are difficult to adapt to curved, cantilevered, and other irregular building facades, requiring repeated design for special parts. Therefore, a detachable fall arrestor that can be flexibly installed on the scaffold boards is needed to solve the above-mentioned problems of attached lifting scaffolds. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a detachable fall protection device for attached lifting scaffolding, which effectively solves the problems of insufficient protective coverage, poor dynamic adaptability, and poor adaptability in traditional fall protection designs.

[0005] This utility model achieves the above-mentioned technical objectives through the following technical means.

[0006] A detachable fall arrestor for attached lifting scaffolding includes a support pole and a foldable space frame; the support pole is vertically fixed between two layers of scaffold boards of the attached lifting scaffolding via connecting fasteners. The foldable scaffolding includes a rectangular steel pipe frame formed by connecting one long scaffolding tube and two short scaffolding tubes with right-angle couplers. The surface of the rectangular steel pipe frame is covered with a fall protection net. The other ends of the two short scaffolding tubes on both sides of the rectangular steel pipe frame are hinged to the supporting uprights by swivel couplers. The length of the hinged short scaffolding tubes extending beyond the swivel couplers is 200-250mm. The installation position of the swivel couplers is within 150mm of the bottom of the scaffold board.

[0007] Furthermore, in the unfolded state of the folding grid frame, the short scaffolding pipes are erected on the exterior facade of the building to bear the load of falling personnel or objects.

[0008] Furthermore, the length of the scaffolding short tube is between 1.2 and 1.4 times the distance between the scaffolding board and the main building structure.

[0009] Furthermore, when the folded space frame cannot be attached to the main building, the scaffolding boards restrict the rotation stroke of the scaffolding short pipes, so that the scaffolding short pipes and the scaffolding boards form a rigid cantilever support structure, and the downward tilt angle of the folded space frame in the cantilever state does not exceed 10°.

[0010] This utility model has the following beneficial effects: 1. The fall protection device provided by this utility model is integrated into the attached lifting scaffold, which can significantly improve the sealing performance and fall protection level of the scaffold during the main structure construction stage; its folding grid automatically switches to a cantilever structure when it cannot be attached to the building facade, maintaining continuous fall protection function, and can adapt to curved, cantilever and other irregular building facades.

[0011] 2. This utility model consists of a coupler-type scaffolding steel pipe, standard couplers and fall protection net. The components are simple and lightweight, and easy to assemble and disassemble. When the climbing scaffold is lifted, the scaffold can be quickly retracted and fixed by temporary fixing parts, which greatly reduces the amount of auxiliary work.

[0012] 3. All components of this utility model can be assembled using existing reusable materials on the construction site, which significantly reduces implementation costs; standardized components support repeated reuse, which can effectively improve material utilization and has strong engineering universality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the detachable fall protection device described in this utility model; Figure 2 This is a schematic diagram of the folded mesh frame recovery state of the detachable fall arrestor described in this utility model; Figure 3 This is a schematic diagram showing the attachment and cooperation between the detachable fall arrestor frame and the main building structure of this utility model; Figure 4 This is a schematic diagram of the rigid cantilever support formed by the scaffolding short pipe and the scaffolding board described in this utility model.

[0014] In the diagram: 1-scaffold board, 2-supporting upright, 3-connecting coupler, 4-folding space frame, 41-scaffolding long pipe, 42-scaffolding short pipe, 43-right angle coupler, 44-swivel coupler, 5-fall protection net. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0016] like Figures 1 to 3 As shown, the detachable anti-fall device for attached lifting scaffolding of this utility model includes a support pole 2 and a foldable mesh frame 4.

[0017] like Figures 1 to 3 As shown, the support pole 2 is vertically fixed between the two layers of scaffold boards 1 of the attached lifting scaffold by the connecting fastener 3.

[0018] like Figures 1 to 3 As shown, the foldable space frame 4 includes long scaffolding pipes 41 and short scaffolding pipes 42. One long scaffolding pipe 41 and two short scaffolding pipes 42 are connected by right-angle couplers 43 to form a rectangular steel pipe frame. The other ends of the two short scaffolding pipes 42 on both sides of the foldable space frame 4 are hinged to the supporting uprights 2 by swivel couplers 44. The hinged short scaffolding pipes 42 need to extend 200-250mm beyond the swivel couplers 44, and the installation position of the swivel couplers 44 is strictly limited to within 150mm of the bottom of the scaffold board 1. A fall protection net 5 is laid on the surface of the foldable space frame 4 to achieve the fall protection function and ensure construction safety.

[0019] like Figure 2 As shown, during the lifting operation of the attached lifting scaffold, the folding mesh frame 4 can be rotated upward around the rotating fastener 44 to the retracted state; after retraction, the folding mesh frame 4 is tied to the support pole 2 with temporary wire fasteners to ensure that the folding mesh frame 4 does not unfold during the lifting process, thereby improving the lifting safety of the attached lifting scaffold.

[0020] like Figure 3 As shown, after the attached lifting scaffold is raised to its position, the temporary wire fasteners are removed, the space frame 4 is folded up and unfolded, and the scaffold short pipes 42 are attached to the building facade in the unfolded state. When bearing the load of falling personnel or objects, the scaffold short pipes 42 maintain a tight fit with the building facade due to the vertical friction between them and the horizontal reaction force of the scaffold structure. The length of the scaffold short pipes 42 should be controlled within the range of 1.2 to 1.4 times the distance between the scaffold board 1 and the main building structure. Insufficient length will lead to failure of the fall protection function and inadequate sealing, while excessive length will hinder personnel passage efficiency and significantly weaken structural safety due to increased moment in cantilever conditions.

[0021] like Figure 4As shown, when the folding space frame 4 cannot be attached to the main building, the scaffold board 1 restricts the rotation stroke of the scaffold short pipe 42, so that the scaffold short pipe 42 and the scaffold board 1 form a rigid cantilever support structure to maintain the fall prevention function. At this time, the length of the scaffold short pipe 42 extending out of the swivel coupler 44 is kept at 200-250mm, and the installation position of the swivel coupler 44 is strictly limited to within 150mm of the bottom of the scaffold board 1 to ensure that the downward tilt angle of the folding space frame 4 in the cantilever state does not exceed 10°, thereby enhancing the fall interception efficiency.

[0022] Furthermore, the length of the scaffolding long tube 41 can be extended, and a scaffolding short tube 42 can be added to the vertical main frame of the attached lifting scaffolding. The additional connection can be achieved through the swivel coupler 44, thereby strengthening the structural rigidity of the folding grid 4 and optimizing the load distribution of the fall protection net 5.

[0023] The embodiments described above are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention shall fall within the protection scope of the present invention.

Claims

1. A detachable fall arrestor for attached lifting scaffolding, characterized in that, Includes support poles (2) and foldable space frame (4); the support poles (2) are vertically fixed between the two layers of scaffold boards (1) of the attached lifting scaffold by connecting fasteners (3); The foldable scaffold (4) includes a rectangular steel pipe frame formed by connecting one long scaffold pipe (41) and two short scaffold pipes (42) with right-angle couplers (43). The surface of the rectangular steel pipe frame is covered with a fall protection net (5). The other ends of the two short scaffold pipes (42) on both sides of the rectangular steel pipe frame are hinged to the support pole (2) by swivel couplers (44). The length of the hinged short scaffold pipe (42) extending out of the swivel coupler (44) is 200-250mm. The installation position of the swivel coupler (44) is within 150mm of the bottom of the scaffold board (1).

2. The detachable fall arrestor for attached lifting scaffolding according to claim 1, characterized in that, When the folding grid (4) is unfolded, the scaffolding short pipes (42) are erected on the exterior of the building to bear the load of falling people or objects.

3. The detachable fall arrestor for attached lifting scaffolding according to claim 1, characterized in that, The length of the scaffolding short tube (42) is between 1.2 and 1.4 times the distance between the scaffolding board (1) and the main building.

4. The detachable fall arrestor for attached lifting scaffolding according to claim 1, characterized in that, When the folding grid (4) cannot be attached to the main building, the scaffold board (1) restricts the rotation stroke of the scaffold short pipe (42) so that the scaffold short pipe (42) and the scaffold board (1) form a rigid cantilever support structure, and the downward tilt angle of the folding grid (4) in the cantilever state does not exceed 10°.

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