KR101928383B1 - Vertically installed net for fall prevention - Google Patents

Abstract

A vertical fall prevention net comprises: a plurality of nets which are made of polypropylene, and include nets forming meshes; a sewing unit formed to cover a portion of the nets; and one or more connection rings positioned on one end of the sewing unit to be coupled to a structure. The sewing unit includes: an edge unit positioned on edges of one or more nets among the plurality of nets; and a joining unit positioned on a connection portion among the plurality of nets. Also, the sewing unit may be made of polypropylene like the nets. The vertical fall prevention net has the plurality of nets consisting of nets of a polypropylene material and having a structure of being coupled to each other by the sewing unit. Therefore, the fall prevention net can be constructed in a large area without losing tensile strength.

Description

[0001] VERTICALLY INSTALLED NET FOR FALL PREVENTION [0002]

Embodiments are directed to a vertical fall prevention network, and more particularly, to a vertical fall prevention network in which tensile strength is increased over a large area by composing a net by combining mesh and band-shaped sewing portions made of polypropylene Fall protection network.

In order to prevent workers from approaching places where there is a risk of falling when working at high places such as new construction sites of high-rise buildings in general, and to prevent falling of timber, scaffolding, work tools and field materials, A fall prevention network is vertically installed on the inner side of the vehicle.

This fall prevention network must have tensile strength that can withstand the impact applied by the worker or the work tool and can not be torn by the impact. In addition, if work such as welding or welding is expected around the place where the fall prevention network is installed, Flame retardant or flame retardant.

Conventionally, polyester fiber is used as the material of the fall prevention network. However, the fall prevention network woven with polyester has a problem that it is very difficult to maintain the shape of the net so that it can be easily pulled by pulling by hand.

In order to solve the problems of the polyester fiber, the polyester fiber is coated with poly (vinyl chloride) (PVC) to form a mesh. However, when PVC is coated, only PVC There is a problem in that there is little or no technology for separating out the effect so as to achieve the effect or the cost is very high.

In addition, polyethylene fibers have been widely used as a fall prevention material because they are inexpensive. However, they have a problem in that they are torn or broken due to weak impact absorption and tensile strength, and many accidents occur due to falling objects.

As a result of studies to overcome the limitations of the conventional fiber materials, Patent Publication No. 10-0997443 discloses a method for fabricating a knockdown prevention net made of a polyethylene knitted fabric and a polypropylene (PP) . The fall prevention network disclosed in Patent Publication No. 10-0997443 has an advantage over the conventional fall prevention network in terms of tensile strength, shear property, stretchability and strain due to the horizontal connecting yarn of PP material.

However, even if the fall prevention network is woven including a horizontal connection yarn made of PP, it is difficult to exhibit sufficient tensile strength in all areas when the fall prevention network is to be woven in a large area, and since the PP fiber has weak points of heat or ultraviolet rays There is a problem that the tension of the fall prevention network is reduced due to heat generated at a work site.

Meanwhile, the conventional fall prevention network is coupled to the opening of the structure by using a clip such as that used in the waistband. In this case, the coupling is not easy and the coupling strength is weak.

Korean Patent Registration No. 10-997443

According to an aspect of the present invention, it is possible to provide a vertical fall prevention network in which tensile strength is increased over a large area by constructing a net by combining mesh and band-shaped sewing parts made of polypropylene.

The vertical fall-prevention network according to the embodiments is intended to be installed vertically in the structure to prevent the fall of objects or persons.

The vertical fall prevention network according to an exemplary embodiment includes a plurality of meshes including a mesh formed of polypropylene (PP) and forming a mesh; A sewing part formed to cover a part of the mesh; And at least one connection ring located at one end of the sewing part and made of a metal material to be coupled to the structure.

Wherein the sewing portion includes: a rim portion positioned at an edge of at least one of the plurality of nets; And a junction located at a connection site between the plurality of networks.

In one embodiment, the sewing portion comprises polypropylene.

In one embodiment, each of the one or more linking rings comprises: a metal plate having a central portion bent at a right angle; A groove formed on the metal plate and through which the sewing unit passes; And a hole or groove formed in the metal plate so as to be disposed at a right angle to the groove and coupled to the structure.

In one embodiment, the linkage consists of iron coated with zinc on its surface.

The vertical fall-prevention network according to one embodiment further comprises a rim rope forming a grid-like mesh. At this time, the mesh of the net is located in the grid formed by the frame rope.

The vertical fall prevention network according to an exemplary embodiment further includes one or more engaging members that are disposed to be covered by the abutment portion and are coupled to the frame rope to engage the plurality of nets.

In one embodiment, the engaging member includes two holes, each of which has a V-shaped cross-section at the center and has a cross-sectional shape, through which the two rim ropes differ from each other.

In one embodiment, the engaging member is inserted and fixed to the installation surface of the vertical fall-prevention network.

In one embodiment, the engaging member includes an inner central portion disposed in a region where two mutually different nets are overlapped with each other, and four sides extended from the inner central portion to be arranged in a cross shape with respect to the inner central portion. At this time, each of the four sides surrounds the rim of the rim and folds over the inner central portion, so that the two nets can be joined together by the joining member.

In one embodiment, the medial center and each of the four sides each include perforations forming one bolt hole when the four sides are folded over on the medial midsection.

In one embodiment, the engagement member comprises: a support plate; Two rollers formed on the support plate for respectively winding up the two different frame ropes; A cover frame covering an upper portion of the roller to prevent the frame rope from being detached from the roller; And a fixing bolt for fixing the cover frame to the support plate.

In one embodiment, the roller includes a bolt hole to which the fixing bolt is coupled, and the fixing bolt is coupled to the bolt hole through the cover frame, thereby coupling the cover frame to the supporting plate.

The vertical fall prevention network according to one aspect of the present invention has a structure in which a plurality of nets made of polypropylene mesh are mutually coupled through a sewing part in the form of a band, There is an advantage that the fall prevention network can be configured as a large area.

In addition, the vertical fall prevention network according to one aspect of the present invention includes a coupling member for connecting the networks using the network of the network, at a connection portion between the network and the network, There is an advantage.

1 is a top view of a vertical fall arrestor network in accordance with one embodiment.
FIG. 2 is a perspective view of a first link of a vertical fall protection network according to an embodiment. FIG.
3 is a perspective view of a second link of a vertical fall arrest network in accordance with one embodiment.
4 is a perspective view of a third link of a vertical fall arrest network in accordance with one embodiment.
5 is a plan view of a vertical fall arrestor network according to yet another embodiment.
FIG. 6 is a plan view showing a network coupling structure using a coupling member of a vertical fall prevention network according to an embodiment.
7A to 7C are perspective views illustrating a mesh coupling structure using a coupling member of a vertical fall-prevention network according to another embodiment.
8A is a plan view showing a network coupling structure using a coupling member of a vertical fall-prevention network according to another embodiment.
8B is an enlarged perspective view of one of the coupling members shown in FIG. 8A.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Where reference in the specification to "above " another part, it may be directly on the other part or be accompanied by another part therebetween. In contrast, when a section is referred to as being "directly above" another section, no other section is involved.

Herein, the terms first, second and third, etc. are used to describe various parts, components, regions, layers and / or sections, but are not limited thereto. These terms are only used to distinguish any moiety, element, region, layer or section from another moiety, moiety, region, layer or section. Thus, a first portion, component, region, layer or section described below may be referred to as a second portion, component, region, layer or section without departing from the scope of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified and that the presence or absence of other features, regions, integers, steps, operations, elements, and / It does not exclude addition.

The term " below ", "above ", and the like, which denote relative space in this specification, can be used to more easily describe the relationship to other parts of a part shown in the drawings. These terms are intended to include other meanings or acts of the apparatus in use, as well as intended meanings in the drawings. For example, when inverting a device in the figures, certain parts that are described as being "below" other parts are described as being "above " other parts. Thus, an exemplary term "below" includes both up and down directions. The device can be rotated by 90 degrees or rotated at different angles, and terms indicating relative space are interpreted accordingly.

Unless defined otherwise, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

1 is a top view of a vertical fall arrestor network in accordance with one embodiment.

1, the vertical fall prevention network according to the present embodiment includes a plurality of nets 10, a sewing section 21-23 formed to cover a part of the net 10, a sewing section 21-23 And includes at least one metal connection link 31-33 for coupling the vertical fall-prevention network to the installation target structure.

In each of the plurality of nets 10, a horizontal connecting yarn and a vertical woven yarn are woven in the form of a mesh. In the embodiments, the horizontal connecting yarn and the vertical woven yarn are made of polypropylene (PP). For example, the horizontal connecting yarns and the vertical connecting yarns may each be composed of at least four strands of PP fibers, but the present invention is not limited thereto.

The sewing part 21-23 is formed in a band shape covering one area of the net 10 and serves to provide a tensile force required when the vertical fall prevention network is formed in a large area. For this, in one embodiment, the sewing section 21-23 is made of PP fiber like the net 10.

In one embodiment, the sewing portion 21-23 includes a joint portion 21 covering a connection portion between the mesh 10 and the mesh 10, and a joint portion 21 disposed on an edge of the vertical fall- And rim portions (22, 23) covering a part of the net (10). At this time, one or more coupling members (not shown) for connecting the mesh 10 and the mesh 10 may be located below the area covered by the joint 21, and this will be described in detail with reference to FIGS. 6 to 8 Will be described later.

The joining portion 21 and the rim portions 22 and 23 are formed by weaving the PP fibers in the form of a band having a thickness of 1 mm and a width of 50 mm and are joined to the net 10 by one or more seams. do. However, the sizes of the joining portion 21 and the edge portions 22 and 23, the seam line spacing, and the like may be different depending on the use of the vertical fall prevention network, and are not limited by the above numerical values.

In one embodiment, the vertical fall protection network has a total width W2 of 1500 mm, with two nets 10 having a width W1 of 750 mm and a length L of 2400 mm, respectively, And a length L of 2400 mm. However, this is an illustrative example, and in other embodiments, a vertical fall prevention network may be constructed by connecting networks 10 having different sizes or by connecting a larger number of networks 10.

In one embodiment, a label for indicating the rated installation load of the vertical fall-prevention network is attached to one area of the sewing section 21-23. Further, the label may further display additional information such as a product name, a model and a format, a manufacturing date, a manufacturer name, and a safety certification number. For example, the label may be made of a resin material having a size of 16 cm in width and 5.5 cm in length and not easily tearable, but is not limited thereto.

The connection rings 31-33 are metal members for installing a vertical fall-prevention network on the structure. By installing a vertical fall-prevention network to cover the openings of the structure using the connecting hooks (31-33), the worker is prevented from approaching the place where there is a risk of falling, and the fall of wood, scaffolding, work tools, Can be prevented. For example, a vertical fall-prevention network can be installed at the raising portion such as a balcony to match the wall and wale spacing.

In one embodiment, the connection rings 31-33 are formed by coating a member made of iron (Fe) with zinc (Zn) to prevent rusting.

The shape of the linking rings 31-33 may differ depending on the position where the linking rings 31-33 are engaged in the vertical fall-prevention network. In the vertical fall prevention network shown in FIG. 1, the right side in the drawing is a fixed end for relatively joining to the lower end of the structure, and the left side in the drawing is a free end for relatively joining to the upper end of the structure. And the second linking ring 32 or the third linking ring 33 may be coupled to the fixed end. The second linking ring 32 and the third linking ring 33 have different lengths and shapes.

FIG. 2 is a perspective view of a first link of a vertical fall protection network according to an embodiment. FIG.

Referring to FIG. 2, the first connection loop 31 includes a metal plate 310 whose center portion is bent at a right angle, and a vertical portion of the metal plate 310 is connected to a sewing portion of a band- (Not shown). In one embodiment, the length L311 of the horizontal portion of the metal plate 310 and the length L312 of the vertical portion are equal to each other. The horizontal portion of the metal plate 310 includes a hole 312 for fixing the first connection loop 31 to the structure and a nail or bolt is passed through the hole 312 to be inserted into the structure, (31) to the structure.

3 is a perspective view of a second link of a vertical fall arrest network in accordance with one embodiment.

3, the second connection loop 32 includes a metal plate 320 whose center portion is bent at a right angle, and a vertical portion of the metal plate 320 is formed in a band shape of a fall prevention network And a groove 321 through which the sewing portion of the sewing machine is coupled. In one embodiment, the length L321 of the horizontal portion of the metal plate 320 is longer than the length L322 of the vertical portion. The horizontal portion of the metal plate 320 includes a groove 322 for fixing the second linking ring 32 to the structure and is inserted into the structure by passing nails or bolts through the groove 322, (32) to the structure.

In the second connection loop 32, unlike the first connection loop, the opening formed in the horizontal portion is in the form of a groove 322 extending in one direction, so that nails or bolts pass through the groove 322 and are fastened to the structure The fastening position can be moved along the groove 322. [

4 is a perspective view of a third link of a vertical fall arrest network in accordance with one embodiment.

Referring to FIG. 4, like the first and second linking rings, the third linking ring 33 also includes a metal plate 330 whose center portion is bent at a right angle, and a vertical portion of the metal plate 330, And a groove 331 through which the sewing portion of the band shape of FIG. In one embodiment, the length L331 of the horizontal portion of the metal plate 330 is longer than the length L332 of the vertical portion, and the length L331 of the horizontal portion of the metal plate is longer than the length L331 of the second portion Is shorter than the length (L321) of the horizontal portion of the link loop. The horizontal portion of the metal plate 330 includes a groove 332 for fixing the third linking ring 33 to the structure and is inserted into the structure by passing nails or bolts through the groove 322, (33) to the structure.

One end of the band-shaped sewing part 21-23 is passed through the grooves 311, 321 and 331 of the vertical part of the connection rings 31-33 made of the metal having various shapes as described above, By sewing, the sewing part 21-23 can be coupled to the connecting hooks 31-33. In this case, it is not necessary that the vertical fall-prevention network is coupled to the structure using a clip as in the prior art, and it can be firmly connected to the structure by using the connection rings 31-33 in the form of fixed hardware.

In addition, at least one of the metal connection rings 31-33 may be further coupled with a tension bracket (not shown) for coupling between the structure and the connection rings 31-33. For example, a metal plate type tension bracket including a bolt hole is prepared, and bolts are fastened to pass through holes or grooves 312, 322, and 332 of the bolt holes of the tension bracket and the connection rings 31-33, (31-33) to the tension bracket.

On the other hand, at least one engaging member for connecting the net 10 and the net 10 may be positioned below the region covered by the joint 21 of the sewing part 21-23. A plurality of nets (10) are connected to each other by using a joining member to constitute a vertical fall prevention network. By supplementing the tensile strength by the joined portion (21) sewn thereon, a vertical fall prevention network It can be configured as a large area. This coupling structure will be described in detail below.

5 is a top view of a vertical fall protection network in accordance with one embodiment.

5, in one embodiment, each net 10 in a vertical fall-through network includes a frame rope 40 that forms one or more lattices, and the mesh of the net 10 includes a frame rope 40 Lt; / RTI > That is, the rim rope 40 is disposed so as to surround at least the edge of the net 10. It will be readily appreciated by those skilled in the art that the size and number of gratings formed by the rim 40 in Fig. 5 is merely exemplary.

The frame rope 40 may be made of PP fiber as in the mesh and sewing section 21-23 of the net 10, but is not limited thereto. However, it is preferable that the frame rope 40 is made of a thicker fiber than the mesh of the net 10.

The frame rope 40 positioned at the edge portion of the net 10 can be covered by the sewing portion 21-23. At this time, the rim rope 40 forming one of the nets 10 is joined to the rim 40 of the other nets 10 using the joining member in the region covered by the joining portion 21 of the sewing portion 21-23 And one mesh 10 can be combined with the other mesh 10 through the coupling of the edge ropes 40.

FIG. 6 is a plan view showing a network coupling structure using a coupling member of a vertical fall prevention network according to an embodiment.

Referring to FIG. 6, the vertical fall prevention network according to the present embodiment is connected to the horizontal connecting yarn 41 of the lattice-shaped frame ropes constituting the adjacent nets 10, thereby connecting the nets 10 and the other nets 10 And a joining member 51 for joining. The joining members 51 include holes through which horizontal joining yarns 41 of different rim ropes are respectively inserted through. The horizontal connecting yarns 41 of the net 10 different from each other are inserted into the two holes of the connecting member 51 and the horizontal connecting yarns 41 of the respective nets 10 are connected to each other So that a connection between the networks 10 can be made. The method of connecting the horizontal connecting yarns 41 is not limited to a specific method, for example, a method of integrating the horizontal connecting yarn 41 with a single fiber or a method of forming a knot of both fibers.

In one embodiment, the coupling member 51 has a V-shaped cross section bent at the center thereof and functions as an anchor to be inserted and fixed to the installation surface of the vertical fall-prevention network. For example, in the engaging member 51 having a V-shaped cross-sectional shape, the rear surface of the projecting engaging member 51 can be inserted and fixed to the wall of the structure or the like. In this case, since the connection between the horizontal connecting yarns 41 of the both sides of the net 10 joined by using the connecting member 51 can not be further broken, the connection between the net 10 and the net 10 .

7A to 7C are perspective views illustrating a mesh coupling structure using a coupling member of a vertical fall-prevention network according to another embodiment.

Referring to FIG. 7A, in this embodiment, the engaging member 52 includes an inner center portion and four sides 521 extending from the inner center portion so as to be arranged in a positive (+) shape with respect to the inner center portion. The joining member 52 in the shape of a cross is disposed in a region where two or more different nets 10 are overlapped with each other, (521) are folded and gathered on the inner center portion, thereby coupling the different nets (10) to each other. In addition, the inner center portion and each of the four sides 521 of the engaging member 52 may include the through holes 520. [

7B, each side 521 of the engaging member 52 can be folded toward the inner center in a state where the inner center of the engaging member 52 is placed on the overlapped area of the nets 10, which are different from each other. At this time, the mesh of the net 10 is fitted and fixed to the folded portions of the sides 521 of the engaging member 52. As shown in Fig. 7C, by folding all four sides 521 of the engaging member 52, the respective ends of the cruciform (+) are gathered on the medial central portion, 10). At this time, the through holes 520 formed in the inner center portion and each of the four sides 521 of the engaging member 52 coincide with each other when the respective ends of the cross shape are folded to form one bolt hole. By fastening a bolt or the like to the bolt hole, the coupling of the nets 10 using the coupling member 52 can be further strengthened.

FIG. 8A is a plan view showing a network coupling structure using a coupling member of a vertical fall prevention network according to another embodiment, and FIG. 8B is an enlarged perspective view of any coupling member shown in FIG. 8A.

8A and 7B, the vertical fall prevention network according to the present embodiment is commonly connected to the vertical woven yarns 42 of the lattice-shaped frame ropes constituting the different nets 10, And a coupling member 53 for coupling. In one embodiment, the engaging member 53 includes a support plate 530, two rollers 531 formed on the support plate for winding up the two ropes of different nets of different nets, And a cover frame 533 covering the top of the roller 531 to prevent the roller 531 from being detached. Each of the rollers 531 may have a shape in which a diameter of an intermediate portion therebetween is smaller than a diameter of a lower end and an upper end so that the frame rope can be easily wound, .

The two rollers 531 are for winding the vertical woven yarn 42 of the edge rope of the different net 10 on the rollers 531, respectively. The cover frame 533 has a wing-like structure toward both sides while being formed so that a part of the center thereof is depressed downward. The wings on both sides are disposed on the upper part of the roller 531, Is brought into close contact with the support plate 530. As a result, the vertical woven yarn 42 is positioned in the space surrounded by the cover frame 533, the support plate 530 and the rollers 531, so that the vertical woven yarn 42 is prevented from separating from the roller 531 do.

In one embodiment, the engagement member 53 further includes one or more fastening bolts 532 for fastening the cover frame 533 on the support plate 530. For example, a bolt hole for coupling with the fixing bolt 532 is formed on the upper end of each roller 531, and a fixing bolt 532 is fixed to the bolt hole of the roller 531 with the cover frame 533 interposed therebetween. So that the cover frame 533 can be fixed on the support plate 530 by the fixing bolts 532.

While the invention has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. However, it should be understood that such modifications are within the technical scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: net 21:
22, 23: rim portion 31: first connection ring
32: second connection ring 33: third connection ring
40: Border rope 41: Horizontal connection yarn
42: vertical woven yarn 51, 52, 53:

Claims (12)

A vertical fall-prevention net installed vertically in a structure to prevent falling of objects or persons,
A plurality of meshes comprising polypropylene and a mesh forming mesh;
A sewing part formed to cover a part of the mesh;
At least one connection ring made of a metal material at one end of the sewing part and coupled to the structure; And
A frame rope forming a grid-like mesh,
The sewing machine,
A rim positioned at an edge of at least one of the plurality of nets; And
And a junction located at a connection site between the plurality of networks,
Wherein the netting of the netting is located in the lattice formed by the frame rope,
Further comprising at least one joining member disposed to be covered by the joining portion and coupled to the rim rope to join the plurality of ropes together,
Wherein the coupling member comprises two holes each having a V-shaped cross-section at the center and having different cross-sectional ropes for passing therethrough. The method according to claim 1,
Wherein the sewing portion is made of polypropylene. The method according to claim 1,
Wherein each of the one or more linking rings comprises:
A metal plate having a central portion bent at right angles;
A groove formed on the metal plate and through which the sewing unit passes; And
And a hole or groove formed in the metal plate so as to be perpendicular to the groove and coupled to the structure. The method according to claim 1,
Wherein the connecting link is made of iron coated with zinc on its surface. delete delete delete The method according to claim 1,
Wherein the coupling member is inserted and fixed to the installation surface of the vertical fall-prevention network. A vertical fall-prevention net installed vertically in a structure to prevent falling of objects or persons,
A plurality of meshes comprising polypropylene and a mesh forming mesh;
A sewing part formed to cover a part of the mesh;
At least one connection ring made of a metal material at one end of the sewing part and coupled to the structure; And
A frame rope forming a grid-like mesh,
The sewing machine,
A rim positioned at an edge of at least one of the plurality of nets; And
And a junction located at a connection site between the plurality of networks,
Wherein the netting of the netting is located in the lattice formed by the frame rope,
Further comprising at least one joining member disposed to be covered by the joining portion and coupled to the rim rope to join the plurality of ropes together,
Wherein the engaging member includes an inner center portion disposed in a region where two different nets are mutually different from each other and four sides extending from the inner center portion to be arranged in a cross shape with respect to the inner center portion,
Wherein each of the four sides encircles the rim of the rim and is folded over the inner central portion so that the two nets are joined together by the mating member. 10. The method of claim 9,
Wherein each of said inner central portion and said four sides each include perforations forming a bolt hole when said four sides are folded over said inner middle portion. delete delete

Images