KR20080071048A - Safety net install bracket and safety net install / disjoint method which uses the bracket - Google Patents

Abstract

A bracket for installing a safety net of an expanded balcony and an installation and dismantlement method of a safety net using the bracket are provided to improve in appearance, to finish up the work simply and to reduce the problems caused by rainwater flooded in a hole where a set anchor is inserted. A bracket(10) for installing a safety net of an expanded balcony comprises a body folded to have a horizontal unit and a vertical unit to be installed to a prevention projection of a balcony, wherein a large hole and a small hole are formed on the horizontal unit to be connected with each other and a clamp is provided to the vertical unit. An installation and dismantlement method of a safety net using the bracket comprises the steps of: forming many holes on a balcony(B) to be expanded and a prevention projection of a lower balcony using a drill; inserting a set anchor composed of a bolt, an outer case body and a nut to the hole and fastening the nut of the set anchor, thereby fixing the outer case body and the bolt to the hole; making the bracket for installing a safety net of an expanded balcony pass through the nut of the set anchor via the large hole, moving the bracket to make the bolt of the set anchor located in the small hole and tightening the nut, thereby fixing the bracket to the prevention projection of the balcony; installing a triangular frame(40) using the clamp of the bracket installed to the prevention projection of the balcony to be expanded; installing a support bar(42) using the clamp of the bracket attached with the prevention projection of the lower balcony; connecting two ends of a support bar(46) using a pair of clamps(44) to the support bar and the triangular frame respectively; installing a safety net(48) to the triangular frame using a cord; installing a sash(S) at a certain distance from the prevention projection of the balcony; unfastening the nut of the set anchor and moving the bracket to make the bolt of the small hole located in the large hole, and lifting up the bracket and removing the nut through the large hole, and then moving the bracket horizontally and separating; and finishing up with a finish member.

Description

Safety net install bracket and safety net install / disjoint method which uses the bracket.

1 is a perspective view showing a bracket for installing a falling water prevention net of the extended balcony according to the present invention,

2 is a view showing a state in which a hole is formed in the balcony,

3a to 3c is a view showing a state in which a set anchor is installed in the hole of FIG.

Figure 4a to 4e is a view showing a state that the bracket for installing the falling water prevention net of the extended balcony according to the present invention,

5 is a schematic view showing a state in which the falling water prevention network is installed,

6 is a view showing a state where the sash is installed at a predetermined interval on the upper jaw of the balcony,

7a to 7d is a view showing a state in which the bracket for installing the fall prevention net of the extended balcony according to the present invention is separated from the balcony,

8 is a view showing a state in which a predetermined interval between the brace and the sash of the balcony is finished,

9 is a view showing another embodiment of the bracket for installing the falling water prevention net of the extended balcony according to the present invention,

FIG. 10 is a view illustrating an installation state of the anti-dropping net using the bracket of FIG. 9;

11 is a block diagram showing a method for installing and dismantling a drop prevention net using the bracket for installing the drop prevention net of the extended balcony according to the present invention;

12 is a view showing another embodiment of the bracket for installing the falling water prevention net of the extended balcony according to the present invention,

13 is a view showing that the separation prevention member is further provided in the bracket of FIG.

14 is a view showing another embodiment of the separation preventing member of FIG. 13,

15 is a view showing a state in which the bracket of the embodiment is installed on the balcony brace,

FIG. 16 is a view illustrating a state in which a drop preventing net and a chassis are installed at a predetermined interval using the bracket of FIG. 15.

FIG. 17 is a view schematically illustrating a predetermined interval of FIG. 16.

18 is a view showing a state in which a certain interval is finished after the bracket of the embodiment is separated from the balcony jaw.

<Explanation of symbols for main parts of the drawings>

10 bracket 11 horizontal portion

12: vertical portion 13: body

14: anti-aircraft 15: small air

16: clamp 18: fixing protrusion

19: accommodation home

20: hole 30: set anchor

31: bolt 31a: threaded portion

31b: slope 32: outer cylinder

32a: hollow 32b: incision groove

33: nut 40: triangular frame

42: support rod

44: A clamp in which a pair is rotatable with each other

46: support rod 48: safety net

50: finishing member B: balcony

H: predetermined interval S: sash

60: release preventing member 61, 63: clamp

61a: Hollow 63a: Screw groove

62: pin 64: fastening bolt

H ': Schedule interval

The present invention relates to a bracket for installing an anti-drop material and a method for installing and dismantling the anti-drop material using the bracket, and moving within the predetermined interval by using a chassis installed at a predetermined distance from the balcony brace for horizontal maintenance during expansion of the balcony. And a bracket for installing an anti-dropping net of an extended balcony that can be fixed and dismantled by a set anchor installed on an upper surface of the jaw, and by using the bracket, only a predetermined interval is used to close the bracket when separating the bracket after construction is completed. By the finishing treatment, it is to provide a method of installing and dismantling the falling object prevention net that can solve the various problems after the cutting and finishing treatment of the hole and the set anchor is installed set anchor.

In the conventional anti-dropping net mounting bracket and the method of installing and dismantling the anti-dropping room using the same, a plurality of holes are formed in the outside of the prevention jaw of the balcony and the lower balcony to extend the bracket with the clamp on one side of the plate, and the bolt and the outer cylinder The bracket is fixed using a set anchor consisting of a sieve and a nut, and a triangular frame and a supporting rod are installed using the clamp, and a pair of supporting rods are connected to the supporting rod and the triangular frame using a clamp configured to be rotatable with each other. After installing the safety net on the upper part of the triangular frame, install the sash on the balcony prevention jaw, and when the construction is completed, dismantle the safety net, the triangular frame, the support rod, and the supporting rod, and then cut the bolt protruding to the outside of the prevention jaw, The hole was closed.

However, the installation bracket and the method of dismantling the falling object prevention network mounting bracket and using the same has a problem that it is difficult to accurately cut the bolt protruding to the outside of the jaw when dismantling.

In addition, even if cut correctly, there was a problem in that the paint is to be repainted after finishing the process by soldering the hole.

On the other hand, by soldering the holes, problems such as water damage due to rain or the like and breakage of the balcony preventive jaw due to flooding have often occurred when a predetermined time passes after the expansion work.

Therefore, the present invention has been proposed to solve the above-mentioned problems according to the prior art, consisting of a horizontal portion and a vertical portion, the long hole and the small hole is integrally provided in the horizontal portion, the bracket provided with a clamp on the vertical portion After fixing the anchor to the balm of the balcony with the set anchor, and installing the drop prevention net, the sash is installed at a predetermined interval to adjust the level on the upper of the balk of the balcony, and when dismantling the falling net prevents the set anchor leaving the bracket only By finishing the space between the sash and the jaw by using the finishing member, the aesthetics can be improved, the work is simply finished, and problems such as damage caused by rainwater inundation into the hole where the set anchor is inserted later can be reduced. Bracket for installation of drop protection net of extended balcony and fall prevention net using this bracket And to provide a disassembly method.

Bracket for installing the fall prevention net of the extended balcony according to the present invention for achieving the above object

When the balcony expansion work is provided with a sash at a predetermined interval on the prevention jaw of the balcony, it relates to a drop prevention net bracket that can be installed by using the predetermined interval falling prevention net,

It is composed of a body bent to have a horizontal portion and a vertical portion so as to be installed on the prevention jaw of the balcony, and the large hole and the small hole are connected to each other in the horizontal portion, and the clamp is provided in the vertical portion. ,

Here, a set anchor consisting of a bolt having an inclined surface at one side, an outer cylinder provided with a hollow for receiving the bolt, and a nut fastened to the bolt is installed on the prevention jaw of the balcony, and then the sash of the balcony has a predetermined interval. It is installed on the upper part, and the nut is released so that the horizontal part of the body can be inserted between the nut of the balcony and the nut, and after passing the nut through the hole, the bolt is received in the small hole and the nut is tightened to fix the body to the balcony. It is fixed to the jaw, characterized in that to remove the broken body on the balcony prevention jaw by the set anchor using the hole through which the nut passes through the body to loosen the nut and the outer cylinder located in the hole of the body is located in the hole; ,

How to install and dismantle the drop prevention net using the fall prevention net installation bracket of the extended balcony

Forming a plurality of holes in the upper surface of the jaws of the balcony to be extended and the lower balcony thereof;

Fixing a set anchor consisting of a bolt having an inclined surface at one side, an outer cylinder having a hollow in which the bolt is accommodated, and a nut fastened to the bolt;

It consists of a body bent to have a horizontal portion and a vertical portion, the large hole and the small hole is formed to be connected to each other in the horizontal portion, and the bracket is provided with a clamp in the vertical portion of the set anchor Moving the bracket so that the bolt of the set anchor is located in the pore after passing through the nut, and tightening the nut to fix the plurality of brackets to the prevention jaw of the balcony;

Installing a triangular frame using a clamp of a bracket installed on a prevention jaw of a balcony to be extended;

Installing a support rod by using a clamp of a bracket installed on a prevention jaw of a lower balcony;

Connecting both ends of the supporting rods to the supporting rods and the triangular frame, respectively, using a clamp, the pair of which is rotatable;

Installing a safety net on the triangular frame using a string;

Installing a sash at a predetermined interval with the prevention jaw of the balcony;

Loosening the nut of the cassette to remove the bracket, and

Comprising the step of finishing the predetermined interval with a closing member.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the folding storage box according to the present invention will be described.

1 is a perspective view showing a bracket for installing a falling water prevention net of the extended balcony according to the present invention, Figure 2 is a view showing a state in which a hole is formed in the balcony, Figure 3a to 3c is a state in which the set anchor is installed in the hole of Figure 2 4A to 4E are views illustrating a state in which the bracket for installing the anti-dropping net of the extended balcony according to the present invention is fixed to the balcony, FIG. 5 is a schematic view showing a state in which the anti-dropping net is installed, and FIG. Figure 7a to 7d is a view showing a state in which the sash is installed at a predetermined interval on the upper jaw, Figure 7a to 7d is a view showing a state in which the bracket for installing the fall prevention net of the extended balcony according to the present invention is separated from the balcony, Figure 8 9 is a view illustrating a state in which a predetermined interval between sashes is finished, and FIG. 9 is an extended foot according to the present invention. Coney is a view showing another embodiment of the installation of the anti-dropping net mounting bracket, Figure 10 is a view showing the installation of the anti-dropping net using the bracket of Figure 9, Figure 11 is a falling object using the falling prevention net installation bracket of the extended balcony according to the present invention. 12 is a block diagram illustrating a method for installing and dismantling a prevention net, and FIG. 12 is a view showing another embodiment of a bracket for installing an anti-dropping net of an extended balcony according to the present invention, and FIG. 13 is further provided with a departure preventing member in the bracket of FIG. 12. 14 is a view showing another embodiment of the separation prevention member of Figure 13, Figure 15 is a view showing a state in which the bracket of the embodiment is installed on the balcony brace, Figure 16 is a view of FIG. FIG. 17 is a view illustrating a state in which a drop preventing net and a chassis are installed at a predetermined interval by using a bracket, and FIG. 17 is a schedule of FIG. 16. A diagram representing the case schematically, Figure 18 is a flowchart illustrating a yet embodiment of the bracket according showing a state of finishing a predetermined interval after the separation from the balcony bump.

As illustrated in FIG. 1, the bracket 10 for installing the falling-water prevention net of the extended balcony according to the present invention has a body 13 bent to have a horizontal portion 11 and a vertical portion 12 so as to be installed on the prevention jaw of the balcony. The large hole 14 and the small hole 15 are connected to each other in the horizontal portion 11, and the clamp 16 is provided in the vertical portion 12.

It is preferable that the body 13 is made of a plate, and the clamp 16 is a widely used article on the market and a detailed description thereof will be omitted.

In addition, the large hole 14 is made of a size that can pass through the nut of the set anchor to be described later, the small hole 15 is made of a size that accommodates the bolt of the set anchor.

The method of installing and dismantling the drop preventing net using the drop preventing net installing bracket 10 of the extended balcony will be described with reference to FIGS. 2 to 10 and a block diagram of FIG.

First, as shown in FIG. 2, a plurality of holes 20 are formed using a drill (not shown) on the upper surface of the jaws of the balcony B to be extended and the lower balcony B thereof (S1).

And, as shown in Figure 3a to 3c, the threaded portion (31a) is provided on the other outer periphery, the bolt 31 provided with an inclined surface (31b) so that the diameter is wider toward one end in one side, and the An outer cylinder 32 provided with a hollow 32a for accommodating the threaded portion 31a of the bolt 31, and having a plurality of cutting grooves 32b on one side outer circumference corresponding to the inclined surface 31b. One side of the outer cylinder 32, which is fastened to the threaded portion 31a of the bolt 31, moves the outer cylinder 32 to the inclined surface 31b side by the operator's tightening operation, and has an incision groove 32b formed therein. Insert the set anchor 30 consisting of a nut 33 to be opened into the hole 20 and tighten the nut 33 of the set anchor 30 to tighten the outer cylinder 32 and the bolt 31. Fix to the hole. (S2)

Subsequently, as shown in FIGS. 4A to 4E, the body 13 is bent to have the horizontal portion 11 and the vertical portion 12, and the large hole 14 and the small hole in the horizontal portion. A small anchor 15 is formed to be connected to each other, and the bracket 10 for installing the drop prevention net of the expanded balcony, which is provided with the clamp 16 on the vertical portion 12, through the hole 14. After passing through the nut 33 of the set anchor 30 to move the bracket 10 so that the bolt 31 of the set hole (30), and tighten the nut 33 to the bracket 10 to the balcony ( It is fixed to the bump of B). (S3)

5, the triangular frame 40 is installed using the clamp 16 of the bracket 10 installed on the prevention jaw of the balcony B to be expanded (S4) and the lower balcony B. The support rod 42 is installed by using the clamp 16 of the bracket 10 installed on the prevention jaw of the support (S5), and both ends of the support rod 46 by using the clamp 44 which can be rotated by a pair. The support rods 42 and the triangular frame 40, respectively (S6), using a string (not shown) to install a safety net 48 to the triangular frame 40. (S7)

Here, the order of installing the triangular frame, the support rod, the support rod, and the safety net may be changed by the operator.

In addition, the triangular frame 40, the support rod 42, the clamp 44, the support rod 46, the safety net 48, etc. made of a pair rotatable with each other are generally widely used articles and will not be described in detail. .

Then, as shown in Fig. 6, the sash S is provided with the prevention jaw of the balcony B and a predetermined interval H. (S8)

Here, the sash (S) is to be installed with a predetermined interval (H) and the upper surface of the bumps of the balcony (B) when the temporary installation, so that the predetermined interval (H) of the extended balcony according to the present invention to be described later As shown in FIGS. 7A to 7D, which illustrate the step of removing the anti-dropping net mounting bracket 10, a wrench (not shown) of the nut 33 of the set anchor 30 that fixes the horizontal portion 11 of the bracket 10 is fixed. Using the puller to disassemble the bracket 10, the bolt 31 of the set anchor 30 is located in the hole 14 formed in the horizontal portion 11 of the bracket 10, the hole After passing through the nut 33 through the 14, it is preferable that the bracket 10 in the set anchor 30 is a height that can be separated.

7A to 7D, the nut 33 of the set anchor 30 is loosened, and then the bolt 31 positioned in the small hole 15 in the bracket 10 is positioned in the large hole 14. The bracket 10 is moved, the bracket 10 is lifted up so that the nut 33 is pulled out through the hole 14, and then the bracket 10 is moved horizontally to separate it. (S9)

Here, the triangular frame 40 installed by the bracket 10, the support rod 42, the support rod 46, and the safety net 48 may be separately disassembled first, and then the bracket 10 may be separated. Although the bracket 10 may be removed in the state where the frame 40, the support rod 42, the support rod 46, and the safety net 48 are installed, if the efficiency of work is considered, the tripod frame 40 and the support rod ( 42) and the support rod 46 and the safety net 48 is first to remove the bracket 10 is good.

Subsequently, as shown in FIG. 8, the predetermined interval H is finished by the finishing member 50 (for example, silicon). (S10)

On the other hand, Figure 9 shows another embodiment of the bracket 10 for installing the falling water prevention net of the extended balcony according to the present invention, instead of the clamp 16 formed in the vertical portion 12 is made of a fixing projection 18 is formed As the fixing projections 18 are formed instead of the clamps 16, as shown in FIG. 10, both ends of the supporting rods 46 may be formed by using the clamps 44, which may be rotated with each other when the drop preventing net is installed. Connecting to the fixing protrusion 18 and the triangular frame 40, respectively, the step of installing the support bar 42 is omitted.

And, Figure 12 shows another embodiment of the bracket 10 for installing the falling water prevention net of the extended balcony according to the present invention, it is bent to have a horizontal portion 11 and a vertical portion 12 to be installed on the prevention jaw of the balcony Comprising a body 13, the receiving groove 19 is in communication with one surface of the horizontal portion 11 is formed in the horizontal portion 11, the vertical portion is provided with a clamp 16 is provided.

Here, the receiving groove 19 is a ball of the set anchor (30)

It is preferable that the groove 31 is formed in a size to accommodate the accommodating groove 19 so that the bolt 31 is positioned at the center of the horizontal portion 11 so as to come from one surface of the horizontal portion 11 to the center thereof. .

And, the receiving groove 19 is preferably formed along the longitudinal direction of the balcony (B) bumps, and, when the bolt 31 of the set anchor 30 is accommodated in the receiving groove 19 (vertical portion ( It is preferable that the receiving groove 19 is formed at a position where one surface of the surface 12, that is, the surface opposite to the surface on which the clamp 16 is directed, may be in surface contact with the outer surface of the balcony B prevention jaw.

On the other hand, as shown in Figure 13, when the nut 33 of the set anchor 10 for fixing the bracket 10 of another embodiment is released, the bracket 10 is one side (that is, the bolt accommodated in the receiving groove The separation prevention member 60 is further provided at the opening side of the receiving groove 19 formed in the horizontal portion 11 of the bracket 10 to move away from the balcony B prevention jaw in the direction of movement toward the opening side). It is preferred to be provided.

The detachment preventing member 60 is installed at both sides of the opening of the receiving groove 19, and consists of a fastener 61 formed with a hollow 61a therein and a pin 62 inserted into the hollow 61a.

In addition, the detachment preventing member 60 is installed on both sides of the opening of the receiving groove 19, as shown in Figure 14, the fastener 63 and the screw groove (63a) having a screw groove (63a) formed therein It may be made of a fastening bolt 64 is fastened to the).

Referring to the fall prevention net installation and dismantling method using another embodiment of the bracket 10 for installing the fall prevention net of the extended balcony according to the present invention as follows.

First, a plurality of holes 20 are formed by using a drill (not shown) on the upper surface of the jaws of the balcony B to be extended and the lower balcony B thereof.

In addition, a threaded portion 31a is provided at the outer circumference of the other side, and a bolt 31 having an inclined surface 31b and a threaded portion 31a of the bolt 31 are formed so that the diameter thereof becomes wider toward one end at one side. An outer cylinder 32 having a hollow 32a provided therein and having a plurality of cutting grooves 32b at one side outer circumference corresponding to the inclined surface 31b, and a threaded portion 31a of the bolt 31. Set anchor consisting of a nut 33 which is fastened by the operator and moves the outer cylinder 32 to the inclined surface 31b side by the operator's tightening operation so that one side of the outer cylinder 32 having the incision groove 32b is opened. After inserting the 30 into the hole 20, the nut 33 of the set anchor 30 is tightened to fix the outer cylinder 32 and the bolt 31 to the hole.

Subsequently, the receiving groove 19 is formed of a body 13 bent to have a horizontal portion 11 and a vertical portion 12 so as to be installed on the prevention jaw of the balcony, and communicate with one surface of the horizontal portion 11. The bracket 10 formed on the horizontal portion 11 and provided with the clamp 16 on the vertical portion is installed on the balcony B prevention step.

At this time, as shown in FIG. 15, first loosen the nut 33, and then allow the horizontal portion 11 of the bracket 10 to enter between the nut 33 and the balcony B prevention jaw, and the horizontal portion ( The bracket 10 is moved to accommodate the bolt 31 in the receiving groove 19 formed in 11), and then the nut 10 is tightened to fix the bracket 10 to the balcony B prevention jaw.

Then, the pin 62 is inserted into the hollow 61a of the fastener 61 to prevent the bracket 10 from being detached from the balcony B prevention bar when the nut 33 is loosened.

And, as shown in Figure 16, by using the clamp 16 of the bracket 10 installed on the prevention jaw of the balcony (B) to be extended to install a triangular frame (40), the lower jaw of the balcony (B) The support rod 42 is installed by using the clamp 16 of the bracket 10 installed, and both ends of the support rod 46 are triangulated using the clamp 44 which can be rotated by a pair. Connected to the frame 40, the safety net 48 is installed on the triangular frame 40 by using a string (not shown), the sash with a brace and a predetermined interval (H ') of the balcony (B). Install (S).

Here, the sash (S) is to be installed with a certain distance (H ') and the upper surface of the prevention jaw of the balcony (B) during the temporary installation, so that the predetermined distance (H') to the tightening of the nut (33). The nut 10 is fixed to the bracket 10 fixed by the height of the bracket 10 that can be released.

On the other hand, when the balcony (B) expansion work is finished, the fixing of the bracket 10 fixed by the nut 33 by loosening the nut 33 using a spanner (not shown) as shown in FIG. Then, the pin 62 inserted into the hollow 61a of the clamp 61 is removed, and then the bolt 31 located in the receiving groove 19 of the horizontal portion 11 of the bracket 10 is provided with the receiving groove ( 19) the bracket 10 is moved horizontally so as to be separated from the balcony (B) from the jaws. (See Figure 15)

Thereafter, as shown in FIG. 18, the predetermined interval H ′ is finished with the finishing member 50.

As described above, the present invention installs a set anchor on the upper surface of the jaws of the balcony by using a chassis that is temporarily installed at a predetermined interval with the balcony jaws so that the horizontal degree can be adjusted, and is fixed between the set anchor and the jaws. By providing a bracket that can be detached, it is effective to omit the bolt cutting process of the set anchor and the process of closing the hole in which the set anchor is installed when dismantling after installing the drop prevention net using the bracket.

In addition, by filling the predetermined space between the bump and the sash thick using the finishing member, there is an effect that solves the problems such as damage to the bump caused by the inundation of rainwater into the existing set anchor installation holes.

Claims (10)

When the balcony expansion work is provided with a sash at a predetermined interval on the prevention jaw of the balcony, it relates to a drop prevention net bracket that can be installed by using the predetermined interval falling prevention net, It is composed of a body bent to have a horizontal portion and a vertical portion so as to be installed on the prevention jaw of the balcony, and the large hole and the small hole are connected to each other in the horizontal portion, and the clamp is provided in the vertical portion. , Here, a set anchor consisting of a bolt having an inclined surface at one side, an outer cylinder provided with a hollow for receiving the bolt, and a nut fastened to the bolt is installed on the prevention jaw of the balcony, and then the sash of the balcony has a predetermined interval. It is installed on the upper part, and the nut is released so that the horizontal part of the body can be inserted between the nut of the balcony and the nut, and after passing the nut through the hole, the bolt is received in the small hole and the nut is tightened to fix the body to the balcony. It is fixed to the jaw, loosen the nut and move the body so that the outer cylinder located in the small hole of the body is located in the large hole and then using the large hole through which the nut passes through the set anchor, characterized in that to separate the broken body on the balcony prevention jaw Brackets for installing fall protection nets on extended balconies. The method of claim 1, Mounting bracket for the fall prevention net of the extended balcony, characterized in that the fixing projection is formed in place of the clamp. Forming a plurality of holes in the upper surface of the jaws of the balcony to be extended and the lower balcony thereof; Fixing a set anchor consisting of a bolt having an inclined surface at one side, an outer cylinder having a hollow in which the bolt is accommodated, and a nut fastened to the bolt; It consists of a body bent to have a horizontal portion and a vertical portion, the large hole and the small hole is formed to be connected to each other in the horizontal portion, and the bracket is provided with a clamp in the vertical portion of the set anchor Moving the bracket so that the bolt of the set anchor is located in the pore after passing through the nut, and tightening the nut to fix the plurality of brackets to the prevention jaw of the balcony; Installing a triangular frame using a clamp of a bracket installed on a prevention jaw of a balcony to be extended; Installing a support rod by using a clamp of a bracket installed on a prevention jaw of a lower balcony; Connecting both ends of the supporting rods to the supporting rods and the triangular frame, respectively, using a clamp, the pair of which is rotatable; Installing a safety net on the triangular frame using a string; Installing a sash at a predetermined interval with the prevention jaw of the balcony; Unscrew the set anchor nut to remove the bracket and A method for installing and dismantling the falling water prevention net mounting bracket and the falling water prevention net using the bracket, characterized in that it comprises the step of finishing the predetermined interval with a closing member. The method of claim 3 The predetermined interval is an extended balcony characterized in that the fixing of the bracket is released by loosening the nut for fixing the horizontal portion of the bracket, the bracket is separated from the set anchor after passing through the nut through the hole formed in the horizontal portion of the bracket Mounting bracket for falling object prevention method and installation method of the falling object prevention net using this bracket. When the balcony expansion work is installed in the sash of the balcony at a certain interval bar sash is installed, and relates to a fall prevention net bracket that can be installed by using the predetermined interval, Consists of a body bent to have a horizontal portion and a vertical portion to be installed on the prevention jaw of the balcony, the receiving groove communicating with one surface of the horizontal portion is formed in the horizontal portion, the vertical portion is provided with a clamp, Here, a set anchor consisting of a bolt having an inclined surface at one side, an outer cylinder provided with a hollow for receiving the bolt, and a nut fastened to the bolt is installed on the prevention jaw of the balcony, and then the sash of the balcony has a predetermined interval. It is installed on the upper part, the nut is released so that the horizontal part of the body can enter between the prevention jaw and the nut of the balcony, and the bolt is received in the receiving groove of the body, and then tighten the nut to fix the body to the prevention jaw of the balcony, Bracket for installing the fall prevention net of the extended balcony, characterized in that for removing the nut and moving the body to separate the broken body on the balcony prevention jaw by the set anchor. The method of claim 5, Falling prevention net mounting bracket of the extended balcony, characterized in that the separation prevention member is further provided in the horizontal portion. The method of claim 6, The detachment preventing member is installed on both sides of the opening of the receiving groove, the bracket for installing the falling water prevention net of the extended balcony, characterized in that consisting of a clamp formed in the hollow and the pin is inserted into the hollow. The method of claim 6, The detachment preventing member is installed on both sides of the opening of the receiving groove, the bracket for installing the falling water prevention net of the extended balcony, characterized in that consisting of a fastening bolt which is fastened to the fixing groove and the screw groove formed therein the screw groove. Forming a plurality of holes in the upper surface of the jaws of the balcony to be extended and the lower balcony thereof; Fixing a set anchor consisting of a bolt having an inclined surface at one side, an outer cylinder having a hollow in which the bolt is accommodated, and a nut fastened to the bolt; The body of the set anchor is formed of a body bent to have a horizontal portion and a vertical portion, the receiving groove communicating with one surface of the horizontal portion is formed in the horizontal portion, the clamp is provided in the vertical portion to the bolt of the set anchor in the receiving groove At the same time as the horizontal portion is located between the nut and the jaw of the balcony and tightening the nut to fix the plurality of brackets to the jaw of the balcony; Installing a triangular frame using a clamp of a bracket installed on a prevention jaw of a balcony to be extended; Installing a support rod by using a clamp of a bracket installed on a prevention jaw of a lower balcony; Connecting both ends of the supporting rods to the supporting rods and the triangular frame, respectively, using a clamp, the pair of which is rotatable; Installing a safety net on the triangular frame using a string; Installing a sash at a predetermined interval with the prevention jaw of the balcony; Unscrew the set anchor nut to remove the bracket and Falling water prevention network installation bracket of the extended balcony characterized in that the step consisting of finishing the predetermined intervals with a finishing member and method for installing and dismantling the falling water prevention network using the bracket. The method of claim 9, The predetermined interval is the height of the bracket that can be disassembled by fixing the bracket to loosen the nut for fixing the horizontal portion of the bracket and the falling water prevention network installation bracket of the extended balcony and the falling water prevention network installation and disassembly method using the bracket.

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