CN214658652U

CN214658652U - Overhanging scaffold

Info

Publication number: CN214658652U
Application number: CN202022643689.3U
Authority: CN
Inventors: 徐州; 叶圣陶; 丁晓培
Original assignee: Jiangsu Fangyang Energy Technology Co ltd
Current assignee: Jiangsu Fangyang Energy Technology Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-11-09
Anticipated expiration: 2030-11-16

Abstract

The utility model discloses a cantilever scaffold, including a plurality of cantilever beams, an end of each cantilever beam is fixed on the bottom floor through at least one pre-buried hoop plate device, the pre-buried hoop plate device includes a pair of riser, flat board and bolt assembly, a pair of riser opposition and with the flat board vertical welding fixed, a plurality of bolt holes have been seted up along the upper and lower on each riser, bolt assembly includes double-end bolt and nut, double-end bolt passes the bolt hole on a pair of riser and nut threaded connection; one end part of each support rod is fixedly welded with an embedded part embedded on the wall body, the other end part of each support rod is fixedly welded with the corresponding cantilever beam, and connecting section steel is welded between every two adjacent cantilever beams through angle steel; scaffold frame subassembly, including a plurality of pole settings, a plurality of horizontal pole and a plurality of fastener, the welding of setting for the interval on the cantilever beam has a pair of location muscle, and every pole setting tip is fixed mutually with corresponding location muscle, between two adjacent pole settings, through the fastener fastening between pole setting and the horizontal pole.

Description

Overhanging scaffold

Technical Field

The utility model relates to a building tool technical field, in particular to scaffold frame encorbelments.

Background

The overhanging scaffold is an external scaffold for construction, wherein the load in the vertical direction of the overhanging scaffold is transmitted to a main structure of a building through a bottom section steel supporting frame, and the overhanging scaffold belongs to simple facilities used in the building and generally comprises two types, wherein one type is used for overhanging each layer, and the other type is used for overhanging multiple layers. The overhanging scaffold is suitable for high-rise buildings or high-rise structures with the height of not more than 100m, and the height of the scaffold on the upper part of each section steel support frame is not more than 24m (wherein JGJ130-2019 is regulated and is not more than 20 m). It typically comprises a steel profile support frame, a clip-on steel pipe scaffolding, and wall connectors.

The cantilever beam of the existing cantilever scaffold is generally welded and fixed with an embedded part on a main structural surface (namely a cast-in-place surface or a floor surface) of a building or fixed by adopting a snap ring. By adopting the embedded part welded and fixed structure, the welding position between the cantilever beam and the floor surface is usually a plurality of welding points, each welding point has a plurality of welding seams, the stress of the welding position is large and uneven, the construction is complicated, and the time and the labor are consumed. The structure that the snap ring is fixed is more commonly used, and it is integrative pouring in the reinforcing bar of floor with the snap ring is pre-buried usually, passes the cantilever beam from the snap ring, utilizes the snap ring to fix cantilever beam one end on the floor, and its another tip that stretches out the building subject outside is as the strong point of scaffold. However, a space is usually left between the clamping ring and the cantilever beam, and other parts need to be plugged in for clamping, so that the cantilever beam is prevented from being loosened by vibration. For example, a wooden wedge block is usually adopted for clamping, and the wooden wedge block is easily extruded and deformed, so that the cantilever beam mainly stressed still can be loosened, and great potential safety hazards exist. In addition, the length of the cantilever beam extending out of the building main body is obviously longer than the length of the cantilever beam fixed with the floor, so that the extended cantilever beam is easy to deform after being subjected to a larger load in the vertical direction, and the stability and the safety and the reliability of the support are influenced. Finally, the uprights supported on the outriggers are usually welded and fixed to the outriggers, which is disadvantageous for the assembly and disassembly of the uprights in a multi-layer overhanging scaffolding structure.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a scaffold frame of encorbelmenting of simpler structure, support more firm, easily dismouting.

For this, the utility model provides a scaffold frame encorbelments erects in the outside of building subject, and building subject includes multilayer floor, forms at the structure roof beam of every floor bottom, forms the wall body between adjacent two-layer floor, and scaffold frame encorbelments includes:

each cantilever beam extends horizontally, one end of each cantilever beam is fixed on the bottom floor slab through at least one embedded hoop plate device, the other end of each cantilever beam extends to the outer side of the building main body, each embedded hoop plate device comprises a pair of oppositely-arranged vertical plates, a flat plate which is vertically welded and fixed with the pair of vertical plates and is embedded in the bottom floor slab, and a bolt assembly, a plurality of bolt holes are formed in the upper edge and the lower edge of each vertical plate, each bolt assembly comprises a double-end bolt and a nut, and the double-end bolt penetrates through the bolt holes in the pair of vertical plates to be in threaded connection with the nuts so as to clamp the cantilever beams between the pair of vertical plates;

one end of each support rod is fixedly welded with an embedded part embedded in the wall body, the other end of each support rod is fixedly welded with a corresponding cantilever beam, the cantilever beams, part of the wall body and the support rods form a triangular support structure, and connecting section steel is welded between every two adjacent cantilever beams through angle steel;

scaffold frame subassembly, including a plurality of pole settings, a plurality of horizontal pole and a plurality of fastener, set for the interval welding on the cantilever beam every and have a pair of location muscle, every pole setting lower tip with correspond fixed mutually to the location muscle, between two adjacent pole settings, through the fastener fastening between pole setting and the horizontal pole.

In the technical scheme, the cantilever beam (1) and the connection section steel are hot-rolled I-shaped steel, the height of the connection section steel is compared with the height of the cantilever beam by 5cm, the flange width of the connection section steel is compared with the flange width of the cantilever beam by 5-10 cm, the web thickness of the connection section steel is smaller than or equal to that of the cantilever beam, and the flange thickness of the connection section steel is smaller than or equal to that of the cantilever beam.

In the above technical scheme, preferably, the distance between the pair of vertical plates is 5-10 mm larger than the width of the flange of the cantilever.

In the above technical scheme, preferably, the embedded part is an ME type or MF type embedded part, and the thickness of the steel plate is 12-18 mm.

In the above technical scheme, preferably, the positioning rib is deformed steel bar, the diameter of the positioning rib is 5-8 mm smaller than that of the vertical rod, and the length of the positioning rib is 20-30 cm.

In the above technical solution, preferably, the cantilever beam is made of Q235B steel or Q345B steel.

Compared with the prior art, the utility model has the advantages as follows:

1. the cantilever beam is fastened through the pre-buried hoop plate device, the bolt holes are punched in the vertical plates, and the cantilever beam is clamped between the pair of vertical plates through the bolt assembly, so that the cantilever beam is easy to disassemble and assemble; the triangular support structure is formed by the support rods, the cantilever beams and part of the wall body, so that the cantilever beams are reliably connected with the building main body, and the support is more stable, safer and more reliable;

2. the connecting section steel is welded between the cantilever beams, so that the support property of the cantilever beams can be enhanced, and the phenomena that the stress of the cantilever beams is uneven in the horizontal direction and the out-of-plane instability is generated are avoided;

3. the vertical rods are fixed by welding a pair of positioning ribs on the cantilever beam at set intervals, so that the vertical rods are prevented from moving, and the cantilever beam is more compact in structure, reasonable in layout and easy to construct.

Drawings

FIG. 1 is a schematic structural view of the present invention installed outside a building body;

fig. 2 is a schematic structural view of the pre-buried strap device of the present invention;

fig. 3 is a schematic structural view of the bolt assembly of the present invention;

FIG. 4 is a schematic view of the fixing structure of the cantilever beam and pre-embedded hoop plate device of the present invention;

FIG. 5 is a side schematic view of the fixation structure shown in FIG. 4;

FIG. 6 is a schematic view of the triangular supporting structure of the cantilever beam, the supporting rod, the wall body and the connecting section steel of the present invention;

FIG. 7 is a schematic view of the connection structure of the cantilever beam shown in FIG. 6 and the connection section steel;

wherein the reference numbers are as follows:

100-overhanging scaffold; 200-a building body; 201-floor slab; 202-structural beam; 203-a wall body;

1-cantilever beam;

2-embedding a hoop plate device; 21-standing a plate; 211-bolt holes; 22-plate; 23-a bolt assembly; 231-stud bolts; 232-nut;

3-supporting rods;

4-embedding;

5-angle steel;

6-connecting section steel;

7-scaffold assembly; 71-vertical rod; 72-a cross-bar; 73-fasteners;

8-positioning ribs.

Detailed Description

It is easily understood that, according to the technical solution of the present invention, a person skilled in the art can propose various alternative structural modes and implementation modes without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present invention, and should not be considered as limiting or restricting the technical solutions of the present invention in their entirety or in any other way.

In the present specification, terms of orientation such as up, down, horizontal, bottom, outer, inner, and opposing are defined with respect to the structure shown in the drawings, and they are relative terms, and thus may be changed depending on the position and the usage state. Therefore, these and other directional terms should not be construed as limiting terms.

The utility model provides a scaffold frame 100 encorbelments, it includes cantilever beam 1, pre-buried hoop board device 2, bracing piece 3, buries 4, angle steel 5, connection shaped steel 6, scaffold frame subassembly 7 and location muscle 8. The structural components and advantages of the present invention will be described in detail with reference to fig. 1 to 7.

As shown in fig. 1, a new cantilever scaffold 100 is mainly erected outside a building body 200 to be used as an external scaffold for construction. The building body 200 includes a plurality of floors 201, a structural beam 202 formed at the bottom of each floor 201, and a wall 203 formed between two adjacent floors 201.

The cantilever beams 1 are used as a basic supporting structure, and a plurality of cantilever beams 1 are generally arranged, each cantilever beam 1 extends horizontally, one end part of each cantilever beam is fixed on a bottom floor 201 through two embedded hoop plate devices 2, and the other end part of each cantilever beam extends to the outer side of the building main body 200. In this example, the cantilever beam 1 is hot rolled I-steel, and the I-steel is Q235B steel or Q345B steel.

As shown in fig. 2 to 5, the pre-embedded hoop plate device 2 includes a pair of opposing vertical plates 21, a flat plate 22 welded and fixed to the pair of vertical plates perpendicularly and pre-embedded in the bottom floor 201, and a bolt assembly 23. Each vertical plate 21 is provided with a plurality of bolt holes 211 along the upper and lower edges thereof, the bolt assembly 23 comprises a stud 231 and a nut 232, and the stud 231 penetrates through the bolt holes 211 on the pair of vertical plates 21 and is in threaded connection with the nut 232 so as to clamp the cantilever beam 1 between the pair of vertical plates 21.

In this example, the vertical plates 21 and the flat plates 22 are made of steel plates, and the distance between the pair of vertical plates 21 is 5-10 mm larger than the width of the flange of the cantilever beam 1.

As shown in fig. 1 and 6 to 7, a plurality of support rods 3 are provided, the number of the support rods corresponds to that of the cantilever beams 1, one end of each support rod 3 is welded and fixed to the embedded part 4 embedded in the wall 203, and the other end of each support rod 3 is welded and fixed to the corresponding cantilever beam 1. Cantilever beam 1, partial wall body 203 and bracing piece 3 three constitute triangle-shaped bearing structure, have between two adjacent cantilever beams 1 through the welding of angle steel 5 connecting profile steel 6. The welding has connection shaped steel 6 between the cantilever beam 1, can strengthen the support nature of cantilever beam 1, avoids cantilever beam 1 atress inequality on the horizontal direction, produces the out-of-plane unstability.

In this example, the embedded part 4 is an ME type or MF type embedded part, and the thickness of the steel plate is 12 to 18 mm. The connecting section steel 6 is also hot-rolled I-shaped steel, the height H of the connecting section steel 6 is 5cm lower than the height H of the cantilever beam 1, the flange width of the connecting section steel 6 is 5-10 cm smaller than the flange width of the cantilever beam 1, the web thickness of the connecting section steel 6 is smaller than or equal to that of the cantilever beam 1, and the flange thickness of the connecting section steel 6 is smaller than or equal to that of the cantilever beam 1.

Referring again to fig. 1, the scaffolding assembly 7 comprises a plurality of uprights 71, a plurality of crossbars 72 and a plurality of fasteners 73. A pair of positioning ribs 8 are welded on the cantilever beam 1 at intervals of a set interval, the lower end part of each vertical rod 71 is fixed with the corresponding pair of positioning ribs 8, and the adjacent two vertical rods 71 and the cross rod 72 are fastened through fasteners 73. In this example, the upright 71 and the cross bar 72 are both steel pipes, and the fastener 73 is a clamp member. The positioning ribs 8 are made of deformed steel bars, the diameter of the positioning ribs is 5-8 mm smaller than that of the vertical rods 71, and the length of the positioning ribs is 20-30 cm.

In summary, the cantilever beam 1 is fastened by pre-embedding the hoop plate device 2, the bolt holes 211 are punched on the vertical plates 21, and the cantilever beam 1 is clamped between the pair of vertical plates 21 by the bolt assemblies 23, so that the cantilever beam is easy to disassemble and assemble; the supporting rod 3, the cantilever beam 1 and a part of the wall body 203 form a triangular supporting structure, so that the cantilever beam 1 is reliably connected with the building main body 200, and the supporting is firmer, safer and more reliable.

The technical scope of the present application is not limited to the contents in the above description, and those skilled in the art can make various changes and modifications to the above embodiments without departing from the technical spirit of the present application, and these changes and modifications should fall within the protective scope of the present application.

Claims

1. The utility model provides a scaffold frame of encorbelmenting erects the outside at building subject (200), building subject (200) include multilayer floor (201), form at structural beam (202) of every layer of floor (201) bottom, form wall body (203) between adjacent two-layer floor (201), its characterized in that, the scaffold frame of encorbelmenting includes:

a plurality of cantilever beams (1), each cantilever beam (1) extends horizontally, one end part of each cantilever beam is fixed on the bottom floor (201) through at least one pre-embedded hoop plate device (2), the other end part of each cantilever beam extends to the outer side of the building main body (200), the embedded hoop plate device (2) comprises a pair of opposite vertical plates (21), a flat plate (22) which is vertically welded and fixed with the pair of vertical plates (21) and embedded in a bottom floor slab (201), and a bolt assembly (23), wherein a plurality of bolt holes (211) are formed in the upper edge and the lower edge of each vertical plate (21), the bolt assembly (23) includes a stud bolt (231) and a nut (232), the stud bolts (231) pass through bolt holes (211) on a pair of vertical plates (21) and are in threaded connection with nuts (232), so as to clamp the cantilever beam (1) between a pair of vertical plates (21);

the cantilever beam supporting structure comprises a plurality of supporting rods (3), wherein one end part of each supporting rod (3) is fixedly welded with an embedded part (4) embedded in a wall body (203), the other end part of each supporting rod is fixedly welded with a corresponding cantilever beam (1), the cantilever beams (1), part of the wall body (203) and the supporting rods (3) form a triangular supporting structure, and connecting section steel (6) is welded between every two adjacent cantilever beams (1) through angle steel (5);

scaffold subassembly (7), including a plurality of pole settings (71), a plurality of horizontal pole (72) and a plurality of fastener (73), cantilever beam (1) is gone up every and is set for the interval welding and have a pair of location muscle (8), every pole setting (71) lower tip is fixed mutually with corresponding location muscle (8), adjacent two between pole setting (71) with pass through between horizontal pole (72) fastener (73) fastening.

2. The overhanging scaffold of claim 1, wherein: cantilever beam (1) with connection shaped steel (6) are hot rolling type I steel, the height of connection shaped steel (6) is compared the height of cantilever beam (1) is low 5cm, the edge of a wing width of connection shaped steel (6) is compared the edge of a wing width of cantilever beam (1) is little 5 ~ 10cm, the web thickness of connection shaped steel (6) is less than or equal to the web thickness of cantilever beam (1), the edge of a wing thickness of connection shaped steel (6) is less than or equal to the edge of a wing thickness of cantilever beam (1).

3. The overhanging scaffold of claim 2, wherein: the distance between the pair of vertical plates (21) is 5-10 mm larger than the width of the flange of the cantilever beam (1).

4. The overhanging scaffold of claim 1, wherein: the embedded part (4) is an ME type or MF type embedded part (4), and the thickness of a steel plate of the embedded part is 12-18 mm.

5. The overhanging scaffold of claim 1, wherein: the positioning ribs (8) are made of deformed steel bars, the diameter of the positioning ribs is 5-8 mm smaller than that of the vertical rods (71), and the length of the positioning ribs is 20-30 cm.

6. The overhanging scaffold of claim 1, wherein: the cantilever beam (1) is made of Q235B steel or Q345B steel.