KR20120060691A

KR20120060691A - hook apparatus for temporary safety net

Info

Publication number: KR20120060691A
Application number: KR1020100122312A
Authority: KR
Inventors: 문삼섭
Original assignee: (주)해성기공
Priority date: 2010-12-02
Filing date: 2010-12-02
Publication date: 2012-06-12

Abstract

The present invention relates to a safety net hook device which is installed on a steel frame structure to prevent a fall during construction of a building, and in particular, to a safety net temporary hook device that can be assembled or disassembled without using a dedicated tool in the field using an eye bolt. It is about.

Description

Hook apparatus for temporary safety net {hook apparatus for temporary safety net}

In recent years, new buildings are becoming taller and larger in size, and the safety problems caused by the construction of high-rise buildings are amplified.

Such high-rise buildings, because of the magnitude of the load transmitted to the lowest floor, it can be said that it is common to be constructed in a steel frame structure that forms the skeleton of the building as a pillar made of H-beam and a large beam connecting the pillars.

When constructing a steel structure such as this, the construction of each floor is carried out in a state where the floor structure is not completely installed in the space partitioned by the small beams between the large beams. There was a concern that the tool or other accessories fell down during operation, resulting in a safety accident. Therefore, in order to prevent safety accidents that may occur during the construction of high-rise buildings, the construction of a safety net was required outside the steel structure.

One of the methods for installing a conventional safety net is to assemble a large beam connecting the pillars and columns vertically erected horizontally to partition each layer to complete the steel structure, then lift the safety net to bind to the steel structure of the installation location It was tied to the belt and fixed, and the safety nets were connected to each other.

However, these safety net hypothesis methods tended to be more difficult to maintain and, in particular, hypothesis and dismantling work tended to be difficult.

As a conventional safety net temporary hanger device for solving such a problem, one disclosed in, for example, Korean Utility Model Publication No. 1996-0034742 is proposed.

As shown in FIG. 2, the safety net 100 is hypothesized by the hook device 1 on the flange 210 of the beam 200.

As shown in FIGS. 3 and 4, the hook device 1 is bent into a 'c' cross-sectional shape of the upper end portion 11, the lower end portion 13, and the side wall portion 13 to have an insertion portion 10a. (10), the upper end of the clamp (10) is installed vertically inwardly and vertically adjusted bolts 20, and the hook 30 is integrally attached and fixed to the outside of the side wall portion (13) have.

In particular, the hook 30 is to be fixed so that its center portion is fixed to the outside of the side wall portion 13, as shown in Figure 4, so that both sides of the free end (30a) of the hook 30 is twisted to have a gap of a predetermined width It is.

Therefore, after the hook device 1 is fixed at every predetermined position of the flange 210 of the beam 200, the safety net 100 is hooked to the hook 30 to complete the installation.

However, the hook device 1 is assembled / disassembled to the flange 210 by tightening / unscrewing the bolts 20. The tightening / unscrewing of the bolts 20 depends on the type of the bolts 20, such as spanners, wrenches, and sockets. Use special tools such as

However, since the hypothesis of the safety net 100 is made at a high floor, when it does not have a dedicated tool, it may be troublesome to go down again or bring it back because other people do not properly assemble / disassemble it.

Especially if there is no dedicated tool around the construction site, you will see a failure.

In addition, since the fastening hole to which the bolt 20 is fastened is formed only at the upper end 11 of the clamp 10, care should be taken so that the upper end 11 is upward when the clamp 10 is fitted to the flange 210. The installation time is much longer.

Korean Utility Model Publication No. 1996-0034742

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a safety net hypothesis hook device that is convenient to fix / disassemble the assembly to the beam without a dedicated tool.

In order to achieve the above object, the hook for safety net hypothesis of claim 1 of the present invention,

A clamp consisting of an upper end portion, a lower end portion, and a side wall portion connecting one side of the upper end portion and the lower end portion; A hook installed outside the side wall; A female screw portion formed at the upper end portion; An eye bolt is fastened to the female screw part.

According to the configuration of claim 1, by using the eye bolt as a fastener, it can be tightened or loosened without a dedicated tool, and in particular, the same effect can be obtained even by using a replacement tool commonly used in the field.

Safety hook construction hook device according to claim 2 of the present invention,

The hook has a central portion fixed to the outside of the side wall portion, the free ends on both sides are spirally twisted so as to have a gap of a predetermined width,

It is preferable that the female screw portion is further formed at the lower end portion.

According to the configuration of claim 2, the female thread is always located on the upper side of the clamp in any direction, and the safety net can be hooked regardless of the free end position of both sides. There is no significant improvement in installation time.

According to the hook for safety net hypothesis according to a preferred embodiment of the present invention has the following effects.

As the eye bolt is fastened to the female threaded portion of the clamp, the same effect can be obtained by holding and turning the ring forming ring of the eye bolt without using a dedicated tool, or by using a special tool in place of reinforcing bars commonly used in the field. In other words, insert the reinforcing bar into the ring-shaped ring, and then hold the reinforcing bar like a handle and turn or grab one side like a lever.

In addition, the female thread is further formed at the lower end, and the free ends of the hooks are disposed on both sides, so that the female thread is always located on the upper side even if the clamp is fitted to the flange of the beam in any direction. It is not necessary to pay attention to the clamping direction, which significantly improves installation time.

Figure 1a and Figure 1b is a perspective view showing a hook for safety net hypothesis according to an embodiment of the present invention.
Figure 2 is an exemplary view showing a state in which a conventional hanger is installed.
3 is a perspective view of a conventional hook device.
4 is a partially cutaway front view of FIG. 3;
Figure 5 is a perspective view showing a modified embodiment of the conventional hook.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, where like reference numerals refer to like parts, and detailed description thereof will be omitted.

1a and 1b is a perspective view showing a hook for safety net hypothesis according to an embodiment of the present invention.

As shown in Figure 1a and Figure 1b, safety net hypothesis hook device 50 in accordance with an embodiment of the present invention flange clamp 60, the hook 30 and the clamp 60 is fixed to the clamp 60 It consists of a fastening member 70 to be fixed to (210).

The clamp 60 is bent in a cross-sectional shape of the letter 'c' to have an insert portion 60a having one side open, and an upper end portion 61, a lower end portion 63 positioned below the upper end portion 61, and an upper end portion 61. And a side wall portion 65 connecting one side of the lower portion 63.

Hook 30 is fixed to the outside of the side wall portion 65, such as by welding, the safety net 100 is hooked and hypothesized.

The hook 30 is spirally twisted so that the free ends 30a on both sides thereof have a gap p having a predetermined width.

One side of the free end (30a) of the hook 30 is twisted upwards, the other side is formed downward.

The tightening member 70 includes an upper female screw portion 71 formed through the upper end portion 61 and an eye bolt 75 fastened to the upper female screw portion 71.

The eye bolt 75 includes a shaft portion 76 having a male screw and a ring-shaped ring 77 integrally formed at an upper end of the shaft portion 76.

Ring 77 has the advantage that the operator can hold by hand to fasten or disassemble.

In particular, the eye bolt 75 is very useful when there is no dedicated tool for the bolt in the workplace.

In the workplace, sticks and rebars are common, so they can be inserted into the ring 77 and then grabbed and turned or grasped and pushed.

On the other hand, it is preferable that the lower female thread portion 73 which is a through hole is further formed in the lower end portion 63.

In particular, since the free end (30a) is formed on both sides in the center of the hook 30, even if the position of the upper and lower ends (61, 63) of the clamp 60 is fixed by changing the safety net 100 can be hooked in the same way In view of the above, the upper female screw portion 71 and the lower female screw portion 73 are formed in the clamp 60.

Therefore, even if the upper end 61 and the lower end 63 are inserted into the flange 210 in a position in which they are interchanged with each other, the female thread part is always located upwards, which does not interfere with the fastening of the eye bolt 75, and at the same time, the hook 30 is also a safety net. (100) There is nothing wrong with it.

By organically coupling the configuration of the upper and lower female threads 71 and 73 and the free ends 30a of the hooks 30, the clamp 60 is fitted to the flange 210 of the beam 200 in any direction. Also, since the female thread is always located on the upper side and the free end 30a of both hooks 30 also prevents the safety net 100 from being pulled out, it is not necessary to pay attention to the clamping direction, thereby significantly improving the installation time.

What has been described above is just one embodiment for implementing the safety net hypothesis hanger according to the present invention, the present invention is not limited to the above-described embodiment, the invention as claimed in the following claims Without departing from the gist of the present invention, those skilled in the art to which the present invention pertains to the technical spirit of the present invention to the extent that various changes can be made.

50: hook for safety net hypothesis 30: hook
30a: free end 60: clamp
60a: insert 61: upper portion
63: lower portion 65: side wall portion
70: tightening member 71,73: upper and lower female thread portion
75: eye bolt 76: male screw shaft
77: ring 100: safety net
200: beam 210: flange
p: gap

Claims

A clamp consisting of an upper end portion, a lower end portion, and a side wall portion connecting one side of the upper end portion and the lower end portion;
A hook installed outside the side wall;
A female screw portion formed at the upper end portion;
Safety net installation hook device comprising an eye bolt that is fastened to the female thread.

The method according to claim 1,
The hook has a central portion fixed to the outside of the side wall portion, the free ends on both sides are spirally twisted so as to have a gap of a predetermined width,
Safety net installation hook device that the female screw portion is further formed in the lower end.