CN114541790A - Construction method for quickly assembling and disassembling horizontal overhanging net of high-altitude overhanging outer frame - Google Patents

Abstract

The invention provides a construction method for quickly assembling and disassembling a horizontal cantilever net of an overhead cantilever outer frame. In the construction process, the operation personnel can realize quick assembly and disassembly construction, avoid risks, reduce labor input, meet safety construction requirements, effectively prevent high-altitude falling risks, have very convenient operation, can be disassembled and recycled after use, have the recycling rate of 100 percent and extremely low use cost, greatly reduce safety protection measure cost and have remarkable economic and technical benefits.

Description

A kind of high-altitude cantilevered outer frame horizontal pick net quick assembly and disassembly construction method

technical field

The invention relates to the technical field of high-altitude cantilevered outer frame picking nets, in particular to a construction method for rapid assembly and disassembly of high-altitude cantilevered external frame horizontal picking nets.

Background technique

Preventing falls from heights is the focus of safety management on construction sites, especially in the construction phase of the main structure of high-rise buildings. The roof of the high-rise residential building is designed with overhangs, the length of the overhang is 1.2m, and the main structure is constructed with climbing frame + aluminum formwork. Continue to climb to the roof. There are two options for the construction of the outer frame: the first is not to dismantle the climbing frame, and the cantilever frame is erected above the climbing frame; the second is to dismantle the climbing frame first, and then build the cantilever frame. The first method is obviously uneconomical, and the effect of showing the facade is not ideal; while the second method is less secure.

When the high-altitude cantilevered external scaffolding is operated, in order to prevent falling from a high place, the cantilevered protective net is often used to connect the cantilevered external scaffolding as the peripheral horizontal protection of the high-rise building structure. However, the traditional horizontal protection construction is complicated and the construction process is relatively long, which is not conducive to the purpose of efficient construction of the project.

SUMMARY OF THE INVENTION

In view of the above-mentioned prior art, the present invention proposes a construction method for rapid assembly and disassembly of a horizontally picking net of a high-altitude cantilevered outer frame.

A construction method for rapid assembly and disassembly of a high-altitude cantilevered outer frame horizontally hoisted net provided by the present invention comprises the following steps:

S1. Horizontal picking net assembly: The horizontal picking net is assembled on the ground, the main frame is set up first, then the protective net is stretched, and several vertical connectors are erected on both sides of the horizontal picking net;

S2. Hoisting of horizontal pick nets: After the roof cantilever beams are placed and fixed, several assembled horizontal pick nets are hoisted according to different parts, and the hoisted horizontal pick nets are hoisted to the bottom of the roof cantilever beams, close to The side of the roof structure is kept in a horizontal static state;

S3. Fixing the horizontal pick net: place several horizontal fixtures on the upper end of the roof cantilever beam, connect with the vertical connectors on both sides of the horizontal pick net, and fix them on the roof cantilever beam;

S4. Dismantling the horizontal lifting net: After the rods of the cantilevered outer frame are removed in sequence, suspend the main frame of the horizontal lifting net, remove the horizontal fixing piece connected with the vertical connecting piece, and hoist the horizontal lifting net to the ground. , hoist the roof cantilever beam to the ground, and dismantle the horizontal pick net for recycling.

Preferably, in S1, the protective net consists of a white net and a safety net.

Preferably, in S2, the horizontal picking net is hoisted by a docking method, a stacking method, or a method of reserving a gap and then replenishing the net.

Preferably, in S2, the roof cantilever beam is made of I-beam.

Preferably, in S3, anti-slip fasteners are installed on both the top and bottom ends of the vertical connectors.

Compared with the prior art, the beneficial effects of the present invention are: in the construction process of the present invention, the operator can realize rapid assembly and disassembly construction, while avoiding risks, reducing labor input, meeting safety construction requirements, and effectively preventing high-altitude falling risks. , and the operation is very convenient, it can be disassembled and recycled after use, the recycling rate reaches 100%, the use cost is extremely low, the cost of safety protection measures is greatly reduced, and the economic and technical benefits are significant.

Description of drawings

FIG. 1 is a schematic construction diagram of an embodiment of the present invention.

FIG. 2 is a schematic diagram of hoisting a horizontally picking net in a docking manner in an embodiment of the present invention.

FIG. 3 is a schematic diagram of hoisting the horizontal picking net by stacking and splicing in an embodiment of the present invention.

FIG. 4 is a schematic diagram of hoisting a horizontally picking net by using a method of reserving a gap and then replenishing the net according to an embodiment of the present invention.

In the picture: 1. Horizontal pick net; 2. Vertical connecting rod; 3. Roof cantilever beam; 4. Roof structure; 5. Horizontal fixed rod; 6. Cantilevered outer frame.

Detailed ways

In order to make the technical means, creation features, achievement goals and effects of the present invention easy to understand and understand, the present invention will be further described below with reference to the specific drawings.

Example

A construction method for rapid assembly and disassembly of a high-altitude cantilevered outer frame horizontally picking net, referring to Figures 1-4, includes the following steps:

S1. Horizontal pick net assembly: Assemble horizontal pick net 1 on the ground. Ordinary steel pipes of φ48mm can be used. The main frame is erected longitudinally and then horizontally. The length varies from 3 to 6m, depending on the longitudinal length of the roof structure. The width is the length of the outer pick. It can be 3m, and the vertical and horizontal spacing can be 1.5m. It can be assembled into a "field"-shaped horizontal structure, and then hang safety nets and white nets. 30mm flat net, you can first lay a flat net pocket bottom on the main frame, and then lay a dense mesh net, and use 22# wire to bind and fix, and use 0.8m poles on both sides of the horizontal pick net 1 to erect several vertical connecting rod 2;

S2. Hoisting of horizontal pick nets: The roof cantilever beam 3 is made of I-beam. After the roof cantilever beam 3 is placed and fixed, a tower crane is used to hoist several assembled horizontal pick nets 1 according to different parts, and the hoisted The horizontal lifting net 1 is hoisted to the bottom of the roof cantilever beam 3, close to the side of the roof structure 4, and maintains a horizontal static state; wherein, the horizontal lifting net 1 can be hoisted by the docking method shown in Figure 2, or can be hoisted by using The stacking method shown in Figure 3 is used for hoisting, or the method shown in Figure 4 can be used for hoisting, that is, a certain gap is reserved first, and after the installation is completed, the mesh is repaired;

S3. Fixing the horizontal pick net: place several horizontal fixing rods 5 on the upper end of the roof cantilever beam 3, and connect with the vertical connecting rods 2 on both sides of the horizontal pick net by fasteners, and fix them on the roof cantilever beam 3 , the distance between the connection point of the two is not more than 300mm from the main node, and an anti-slip fastener is installed at the top and bottom of the vertical connecting rod 2 to improve the stability and safety performance of the main frame of the horizontal lifting net;

S4. Dismantling the horizontal pick net: After the rods of the cantilevered outer frame 6 are removed in turn, use a small fixture on the roof cantilever beam 3 to clean up the sundries on the horizontal pick net 1 to eliminate potential safety hazards, and use tower crane wire ropes to suspend the horizontal Lift the main frame of the net 1, remove the horizontal fixing rod 5 connected with the vertical connecting rod 2, lift the horizontal lifting net 1 to the ground, lift the roof cantilever beam 3 to the ground, and disassemble the horizontal lifting net 1 for recycling .

In the construction process of this embodiment, the operator can realize rapid assembly and disassembly construction, avoid risks, reduce labor input, meet safety construction requirements, effectively prevent the risk of falling from high altitude, and the operation is very convenient, and can be disassembled after use Recycling, the recycling rate reaches 100%, the use cost is extremely low, the cost of safety protection measures is greatly reduced, and the economic and technical benefits are significant.

The above are only the embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structure made by using the contents of the description and the accompanying drawings of the present invention is directly or indirectly applied to other related technical fields. within the scope of patent protection.

Claims (5)

1. A construction method for quickly assembling and disassembling a horizontal overhanging net of a high-altitude overhanging outer frame is characterized by comprising the following steps:

s1, horizontal net picking and assembling: assembling a horizontal net on the ground, firstly erecting a main framework, then hanging a protective net, and erecting a plurality of vertical connecting pieces on two sides of the horizontal net;

s2, horizontally lifting the net: after the roof cantilever beam is placed and fixed, hoisting a plurality of assembled horizontal cantilever nets according to different parts, hoisting the hoisted horizontal cantilever nets to the position below the roof cantilever beam and close to the side edge of the roof structure, and keeping the horizontal static state;

s3, horizontally screening and fixing: placing a plurality of horizontal fixing pieces at the upper end of the roof cantilever beam, connecting the horizontal fixing pieces with the vertical connecting pieces at two sides of the horizontal cantilever net, and fixing the horizontal fixing pieces on the roof cantilever beam;

s4, horizontally picking up the net and removing: after the rods of the overhanging outer frame are sequentially dismantled, suspending the main framework of the horizontal overhanging net, dismantling the horizontal fixing piece connected with the vertical connecting piece, hoisting the horizontal overhanging net to the ground, hoisting the roof overhanging beam to the ground, and scattering and dismantling the horizontal overhanging net for recycling.

2. The construction method for quickly assembling and disassembling the horizontal cantilever net of the high-altitude cantilever external frame according to claim 1, wherein in S1, the protective net is composed of a white net and a safety net.

3. The construction method for quickly assembling and disassembling the horizontal cantilever net of the high-altitude cantilever external frame as claimed in claim 1, wherein in S2, the horizontal cantilever net is hoisted by adopting a butt joint mode, a splicing mode or a reserved gap net supplementing mode.

4. The rapid mounting and dismounting construction method for the horizontal cantilever net of the high-altitude cantilever external frame as claimed in claim 1, wherein in S2, the roof cantilever beam is made of I-steel.

5. The high-altitude overhanging outer frame horizontal cantilever net quick assembly and disassembly construction method according to claim 1, wherein in S3, anti-slip fasteners are installed at the top end and the bottom end of the vertical connecting piece.

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