WO2006107142A1

WO2006107142A1 - Safety net structure for construction work

Info

Publication number: WO2006107142A1
Application number: PCT/KR2006/000773
Authority: WO
Inventors: Cheon Ho Choi
Original assignee: Cheon Ho Choi
Priority date: 2005-04-06
Filing date: 2006-03-07
Publication date: 2006-10-12
Also published as: KR200389363Y1; CN2871717Y

Abstract

A safety net structure is provided to seek safety of workers and protect workers from a fallout in a construction work. The safety net structure employs a supporting method by use of prefabricated pipe structures and brackets to thereby enable workers to perform an installation work of a safety net or a pipe structure in the inner side of a building, and thus protect workers safely from a danger such as an accidental fall, and enables the length of the pipe structure using an assembly property of the pipe structure to extend, to thereby sufficiently secure the length and angle of the pipe structure which extends out of the building, and thus greatly enhance functionality of the safety net structure .

Description

SAFETY NET STRUCTURE FOR CONSTRUCTION WORK

Technical Field

The present invention relates to a safety net structure which is installed to seek safety of workers and protect workers from a fallout in a construction work, and more particularly to, a safety net structure for- use in a construction work, which employs a supporting method by use of prefabricated pipe structures and brackets to thereby enable workers to perform an installation work of a safety net or a pipe structure in the inner side of a building, and thus protect workers safely from a danger such as an accidental fall, and which enables the length of the pipe structure using an assembly property of the pipe structure to extend, to thereby sufficiently secure the length and angle of the pipe structure which extends out of the building, and thus greatly enhance functionality of the safety net structure.

Background Art

Generally, in the case of all kinds of construction work sites, safety net structures are installed in order to prevent various kinds of tools, construction materials, or workers from falling down due to carelessness of the workers or the other different reasons .

The safety net structure can guarantee safety of high-ground workers, and also guarantee safety of low-ground workers and pedestrians on the ground, and thus is a very important structure which should be essentially installed in construction sites.

In order to install and dismantle a safety net structure in and from a building, respectively, workers should go out of the building and step on pipes for scaffolding or the safety net structure. In this case, the workers are always exposed to safety accidents .

Although life ropes are used to protect workers from accidental falls during working, they may cause inconveniences such as interference or obstacles when workers move or work. Accordingly, most of workers do not wear safety ropes . As a result, the safety accidents of workers frequently breaks out.

In the meantime, the pipe structures applied to existing safety net structures mostly use pipes of the standard length (for example, 4m or βm long) . In this case, in view of the characteristics that the pipe structure is usually installed at 45° inclination angle, the area of the safety net structure extended out of the buildings is narrow. As a result, the existing safety net structure does not function well as a safety net structure. To solve this disadvantage, the safety net structure may be installed nearly horizontally without having an inclination of an angle. However, even in this case, the safety net structure has some disadvantages that the structural stability is lowered and the safety net is not easily cleaned. Moreover, if the pipes each whose standard length is 6m is used, the unit prices of not only the pipe but also the safety net are heightened and accordingly the unit prices of the whole parts are so increased. Further, when the length of the pipe is so long, it is not so easy to carry the pipe in the building that the installation work of the pipes cannot be done. Although the safety net structure is installed, the width of the safety net structure extending out of the building is so broad and it has the disadvantage of more exposing to risk factors when a strong wind blows. Thus, the safety net structure of the 6m long pipes is not used in the construction site.

Disclosure of the Invention

To solve the above problems, it is an object of the present invention to provide a safety net structure for a construction site, which employs a method of connecting prefabricated pipe structures and brackets supporting the prefabricated pipe structures in modular type, in which the length of each pipe is 5m in order to save the total manufacturing cost, to thereby enable workers to perform an installation work or dismantling work of a safety net or a pipe structure in the inner side of a building, and thus protect workers safely from a danger such as an accidental fall, at maximum, and which enables workers to install or dismantle the safety net structure swiftly and conveniently. It is another object of the present invention to provide a safety net structure for a construction site, which enables workers to connect pipe structures in modular type, and which accordingly enables the length of the pipe structure using an assembly property of the pipe structure to extend, to thereby sufficiently secure the length and angle of the pipe structure which extends out of the building, and thus make the safety net structure inclined toward the building to thus make treatment and management including cleaning of the safety net structure easy. To accomplish the above object of the present invention, according to an aspect of the present invention, there is provided a safety net structure for use in a construction site, the safety net structure comprising: a pipe structure which is installed on consecutive three floors; upper and lower wire connection brackets supporting the pipe structure; and pipe connection brackets located between the upper and lower wire connection brackets, wherein wires which are extended from the upper and lower wire connection brackets are connected with and installed in the upper end of the pipe structure, and the pipe connection brackets are connected with and installed in the lower end of the pipe structure bendably via a clamp, and the pipe structure is covered with a safety net, and wherein the pipe structure is connected and covered with the safety net at the state where the pipe structure is pulled back toward the building. Preferably, the pipe structure is made of a combination type structure of two pipe members taking a triangle form, and each pipe member is made of any one of a long pipe and a short pipe.

Preferably, both the pipe members made of the long pipe and short pipe are of an asymmetrical connection type each other.

Preferably, the long pipe and the short pipe in the pipe member are 4m and Im long, respectively, and thus a total length of the pipe member is 5m.

Preferably, the clamp is made of a pair of spherical holders which can be united with and dismantled from each other, in which the clamp is connected by a hinge section to be freely rotatable in a specific direction, to accordingly clamp or unclamp the two pipe members .

Preferably, the wire connecting brackets and the pipe connection brackets are comprised of a screw type of vice playing a role of fastening components, a bracket body made of a "τz" shaped member which is fixed on the concrete at the building side via the screw type of vice, and a bracket bar which is extended integrally from the bracket body and then which is connected with the pipe members of the pipe structure via the clamp, or directly connected with the wire.

Brief Description of the Drawings

FIG. 1 is an exploded perspective view of a safety net structure according to the present invention;

FIG.2 is a coupled perspective view of a safety net structure according to the present invention; and

FIGs. 3A through 3D are schematic views which sequentially show an installation process of a safety net structure according to the present invention, respectively.

Best Mode for Carrying out the Invention

Hereinbelow, a safety net structure according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

FIGs. 1 and 2 are an exploded and coupled perspective view of a safety net structure according to the present invention, respectively. As shown in FIGs. 1 and 2, a safety net 15 functioning to prevent construction materials or workers from falling is installed in the structure of being supported by a safety net structure in a construction work for construction of a building.

The safety net structure according to the present invention includes a pipe structure 10 which secures a spreading area of the safety net 15 and a number of brackets for supporting the pipe structure 10 and connecting and installing wires 13, that is, brackets 11a and lib for wire connection, and bracket 12a, and 12b for pipe connection. The pipe structure 10 is a structure for actually catching and supporting the safety net 15 when a worker or workers or a construction material or construction materials fall down, and is made of a combination type structure of two pipe members taking a triangle form.

In the case of the two pipe members, one end contacting ^'each other, for example, the upper end forming the vertex of the triangle form is integrally tied up by a clamp 14, and connected to the bracket 12a and 12b for pipe connection at the other end by a clamp 14 to then be completed in the structure of the triangle form.

Here, the structure of the triangle form is nothing but an example implemented according to the present invention. The safety net structure is not stubbornly restricted to the form but may be implemented in the structure of a long rectangular form. Moreover, for firmness of the pipe structure 10, a reinforcing pipe 19 may be connected and installed across the pipe members 10 at the suitable location between the pipe members 10 at both sides.

Here, a clamp 14 can be used at the time of connecting the pipe members with the reinforcing pipe 19.

The structure of the triangle form, in particular, each pipe member of the pipe structure 10 is made of a combination type of a long pipe 10a and a short pipe 10b. The clamps 14 are interposed at the connection portions of the long and short pipes 10a and 10b .

This long pipe 10a and the short pipe 10b provide an effect that the whole length of the pipe structure 10, that is, the total length extending out of a building is considerably extended. As a result, a sufficient area of the safety net 15 is secured.

For example, in comparison with most of the safety net structures which are usually manufactured using pipes of the standard length of 4m, the pipe structure made of a combination type of long and short pipes can extend further lengthily out of a building under construction. As a result, an area of the safety net 15 which is installed using the 4m-long pipes can be sufficiently secured.

Moreover, the pipe members made of the long pipe 10a and the short pipe 10b can be formed in a symmetrical connection form or an asymmetrical connection form. It is preferable that the asymmetrical connection form is taken for a balanced sense of stability of the pipe structure 10.

For example, the pipe members are symmetrically arranged side by side in the form of the long pipe plus the short pipe at both sides and then connected with each other by clamps 14. Otherwise, the pipe members are symmetrically arranged side by side in the form of the long pipe plus the short pipe at one side and in the form of the short pipe plus the long pipe at the other side and then connected with each other by clamps 14. In view of the structural sense of stability, the asymmetrical connection form of the latter is more desirable than the symmetrical connection form of the former.

In the actual construction work, the lengths of the long pipe 10a and the short pipe 10b of the pipe members are the standard length of 4m and the divided length of Im which is obtained by dividing the standard length of 4m into the short length of Im, respectively. Accordingly, the total length of the pipe member can be fabricated into the length of 5m. The clamp 14 which is used for connection between the pipe members or for connection of the brackets of the pipe structure 10 is formed of a pair of spherical holders which are connected by a hinge section, and is a general clamp which is widely used in an existing construction field. A pair of the spherical holders can be united with the pipe in a manner that two hemispherical members are coupled with each other to form a perfect spherical member, or which a spherical member is widened in its gap, and can be rotated freely each other in a specific direction by the intermediate hinge section. Of course, the hinge section can be rotated in the state that it has been not united in view of the characteristics of the hinge section which has a bolt tightening structure. After the connection of the clamp is completed, the hinge section is again connected, to then become the fixed state. Therefore, two pipes are connected in a straight line form using this clamp 14. However, the two pipes substantially cross each other by a center distance, that is, a spacing between the spherical holders. Here, if a direction between the two spherical holders is twisted through the hinge section, two pipes crossing each other by 90° can be easily connected.

This clamp 14 is applied to respective pipe member connection portions, the bracket connection portions, the wire connection portions, etc., of the pipe structure 10. The wire connecting brackets lla and lib and the pipe connection brackets 12a and 12b play a role of supporting the pipe structure 10 with respect to a concrete structure 20 of a building or connecting the wires 13.

The wire connecting brackets lla and lib and the pipe connection brackets 12a and 12b are composed of a bracket body 18b, a screw type of vice 18a playing a role of fastening components, and a bracket bar 18c for connecting pipes and wires.

_.The bracket body 18b is made of a "τz" shaped member and is installed in a structure of being inserted into the concrete structure 20 of a jaw shape. Then, the bracket body 18b is firmly fixed by tightening the screw-type vice 18a and the bracket bar 18c is extended from the bracket body 18b by a certain length out of a building. Accordingly, the pipe members and the wires 13 are connected to the bracket bar 18c through the clamp 14. FIGs .3A through 3D are schematic diagrams which sequentially show an installation process of a safety net structure according to the present invention.

As shown in FIG. 3A, a bracket is firstly set up in three floors of a building, respectively.

For example, a wire connection bracket 11a for connecting the wire 13 of 3m long generally is installed on the uppermost floor, a wire connection bracket lib for connection the wire 13 of 10m long generally is installed in the lowest floor, and two pipe connection brackets 12a and 12b for connecting the pipe structure 10 are installed with a spacing therebetween.

Here, the wire 13 of 3m long is a wire used when the pipe structure 10 which has been finally installed up to the safety net structure is spread out of the building, and the wire 13 of 10m long is a wire supporting the pipe structure 10 which completely spreads at a constant angle.

As shown in FIG. 3B, the pipe structure 10 is connected to the pipe connection brackets 12a and 12b.

Two places of the lower end of the prefabricated pipe structure 10 are connected with the bracket bar 18c of the pipe connection brackets 12a and 12b with each clamp 14.

Here, the installation work is simultaneously performed on the three floors . Two places of the lower end of the pipe structure 10 are connected in the state where the pipe structure 10 is closely built up toward the building. Two wires, that is, a wire of 10m long and another wire of 3m long are connected to the upper end of the pipe structure 10.

A binding method by use of the clamp 14 can be employed as a method of fixing the wire. The pipe structure which is a weighted load can be supported by a conventional crane at the time of a pipe structure connection work or wire connection work.

As shown in FIG. 3C, the outermost end of the safety net 15 is connected with the pipe structure 10. Since the pipe structure 10 is built up sticking toward the building, the installation work can be done in the building.

A conventional method can be used as a method of connecting the safety net structure to the pipe. The innermost end of the safety net structure is generally fixed to the building. Therefore, workers do not need to go out of the building, and thus a conventional risk factor occurring by working out of the building can be completely excluded. That is, since workers can work in the building, they work speedily in the building.

As shown in FIG. 3D, if the connection installation work of the safety net 15 is finished, the pipe structure 10 is pulled back out of the building using wires of 3m long.

Here, the pipe structure 10 is rotated using the hinge section 16 of the clamp 14 which is mounted on the connection portions of the pipe connection brackets 12a and 12b, and can be easily pulled back.

If the safety net 15 is sufficiently spread, the wire 13 and the safety net 15 are tensely fixed to accomplish a final safety net . In the case of the pipe structure which has been completely installed as described above, pipes of 4m and Im long are combined to make a pipe of total 5m long. Then, the 5m long pipes are installed at an angle of approximately 45° . The 5m long pipes are covered with a safety net which has a sufficient area out of a building, that is, at a distance of about 3.5m from the building and the safety net can be spread. Even in the case of the safety net, a difference between the outermost portion which is connected to the upper end of the pipe structure and the innermost end portion which is connected to the building is formed. The safety net is inclined at an angle of 15 through 20° so as to become low toward the building. As a result, even in the case that a worker falls, he or she is guided toward the inner side of the safety net, that is, to the inner side of the building, to thereby heighten a safety. Further, the foreign materials which fall down on the safety net are easily shaken off and cleaned, to thereby provide an effect of making treatment and management including cleaning of the safety net structure easy.

As described above, a safety net structure for a construction site, according to the present invention which employs a method of connecting prefabricated pipe structures and brackets supporting the prefabricated pipe structures in modular type, in which the length of each pipe is 5m in order to save the total manufacturing cost, to thereby enable workers to perform an installation work or dismantling work of a safety net or a pipe structure in the inner side of a building, and thus protect workers safely from a danger such as an accidental fall, at maximum, and which enables workers to install or dismantle the safety net structure swiftly and conveniently. In addition, an area of the pipe structure which extends out of the building can be sufficiently secured, and simultaneously treatment and management including cleaning of the safety net can facilitate.

As described above, the present invention has been described with respect to the particularly preferred embodiment. However, the present invention is not limited to the above embodiment, and it is possible for one who has an ordinary skill in the art to make various modifications and variations, without departing off the spirit of the present invention. Thus, the protective scope of the present invention is not defined within the detailed description thereof but is defined by the claims to be described later and the technical spirit of the present invention.

Industrial Applicability

As described above, the present invention provides to a safety net structure for use in a construction site which enables workers to perform an installation work or dismantling work of a safety net or a pipe structure in the inner side of a building, and thus protects workers safely from a danger such as an accidental fall.

Claims

What is claimed is:

1. A safety net structure for use in a construction site, the safety net structure comprising: a pipe structure which is installed on consecutive three floors; upper and lower wire connection brackets supporting the pipe structure; and pipe connection brackets located between the upper and lower wire connection brackets, wherein wires which are extended from the upper and lower wire connection brackets are connected with and installed in the upper end of the pipe structure, and the pipe connection brackets are connected with and installed in the lower end of the pipe structure bendably via a clamp, and the pipe structure is covered with a safety net, and wherein the pipe structure is connected and covered with the safety net at the state where the pipe structure is pulled back toward the building.

2. The safety net structure according to claim 1, wherein the pipe structure is made of a combination type structure of two pipe members taking a triangle form, and each pipe member is made of any one of a long pipe and a short pipe.

3. The safety net structure according to claim 1 or 2, wherein both the pipe members made of the long pipe and short pipe are of an asymmetrical connection type each other.

4. The safety net structure according to claim 3, wherein the long pipe and the short pipe in the pipe member are 4m and Im long, respectively, and thus a total length of the pipe member is 5m.

5. The safety net structure according to claim 1, wherein the clamp is made of a pair of spherical holders which can be united with and dismantled from each other, in which the clamp is connected by a hinge section to be freely rotatable in a specific direction, to accordingly clamp or unclamp the two pipe members .

β. The safety net structure according to claim 1, wherein the wire connecting brackets and the pipe connection brackets are comprised of a screw type of vice playing a role of fastening components, a bracket body made of a "TH" shaped member which is fixed on the concrete at the building side via the screw type of vice, and a bracket bar which is extended integrally from the bracket body and then which is connected with the pipe members of the pipe structure via the clamp, or directly connected with the wire.