KR20110047913A

KR20110047913A - apparatus for frame reinforceing of ladder

Info

Publication number: KR20110047913A
Application number: KR1020090104716A
Authority: KR
Inventors: 박종호
Original assignee: 박종호
Priority date: 2009-10-31
Filing date: 2009-10-31
Publication date: 2011-05-09

Abstract

The present invention discloses a frame reinforcement structure of a ladder.

According to the present invention, a plurality of scaffolds are arranged in two frames arranged side by side at a predetermined interval, or the frame is folded in a middle portion of two frames arranged side by side at a predetermined interval or in a step. Hinges are installed and a plurality of scaffolds are arranged at a predetermined interval or a ladder or a plurality of scaffolds arranged side by side at a predetermined interval, and the plurality of scaffolds are arranged at a predetermined interval and the two frames are slidable. In the combined ladder, characterized in that the frame to which the scaffold is coupled is provided with reinforcement means to prevent damage between the frame and the scaffold when a load is applied, reinforcement means for reinforcing the rigidity in the coupling portion between the scaffold and both frames is Since it is provided, no tearing or damage occurs even when a load is applied.

That is, by preventing the scaffold from being separated from the frame it is possible to prevent the risk of safety accidents caused by the fall of the operator in advance to obtain the effect.

Description

Apparatus for frame reinforceing of ladder}

The present invention relates to a frame reinforcement structure of a ladder, and more particularly, a ladder that can prevent safety accidents caused by falls that may occur in the event of breakage caused by the load of an operator occurring at the joint portion of the scaffold and both frames. Frame reinforcement structure of the.

In general, the general structure of the ladder, a plurality of scaffolds arranged side by side at a predetermined interval, a plurality of steps are placed at a predetermined interval, or a frame in the middle of two frames arranged side by side at a certain interval Hinge means for folding and unfolding are installed, and multiple frames are placed at a predetermined interval or ladders arranged at a predetermined interval, or four frames are arranged side by side at a predetermined interval and two frames are arranged at regular intervals and two frames It is roughly divided into a slidingly coupled ladder.

Such a general ladder is to perform a variety of tasks that can be performed by the operator to climb on the footrest in a state in which the frame on both sides through the hinge means inclined.

However, in such a ladder, when a worker climbs up on a footrest, a tear or breakage occurs on a frame coupled to both ends of the footrest, and as a result, the footrest is released, resulting in a fatal safety accident such as a fall of the worker. Problems that occur are caused.

The reason for this problem is that the ladder is made of a hard material, that is, an aluminum alloy, so that it can be easily transported and stored. In this part, the load of the worker is transmitted as it is on the joint between the scaffold and the frame. This is because breakage occurs.

In addition, such a damaged part is more severely generated at the upper side of the upper side adjacent to the hinge means than the lower side of the foot, which is less likely to fall. This is because the concentration is applied to the binding site.

This problem is particularly fatal because of the height-adjustable ladder is formed on the frame coupled with the top of the footrest for the stopper for height adjustment is formed.

An object of the present invention for solving the above problems is to provide a reinforcing means so as not to tear or damage the joint portion between the scaffolding and the frame by reinforcing the frame of the ladder that can prevent the safety accident of the worker from falling In providing a structure.

Frame reinforcement structure of the ladder according to the present invention for achieving the object, the two frames are arranged side by side at a predetermined interval or a plurality of scaffolding arranged at a predetermined interval or two arranged side by side with a predetermined interval. A hinge means for folding and releasing the frame is installed at the middle of the two frames, and a plurality of scaffolds are uniformly arranged in four frames arranged side by side with a ladder or a plurality of scaffolds arranged at regular intervals on the frame. Ladder disposed at intervals and the two frames are slidably coupled, characterized in that the frame to which the scaffold is coupled is provided with reinforcement means to prevent breakage between the frame and the scaffold when a load is applied.

The reinforcement means of the present invention is characterized in that the plate-shaped metal reinforcement plate is fixed to the outer end of the frame adjacent to the scaffold.

The reinforcing means of the present invention, the plate-shaped metal main body is fixed to the outer end of the frame adjacent to the footrest; The left and right side body is formed integrally extending in a form surrounding the both sides of the frame from the body; characterized in that consisting of.

From the side body of any one of the left, right side body of the present invention, it is characterized in that the sub-body is integrally formed to extend integrally therefrom to surround the footrest.

The reinforcement means of the present invention, the inner body of the metal material is fixed to the inner end of the frame adjacent to the footrest; The left and right side body is formed integrally extending in the form to support the lower surface of the scaffold from both the left and right sides of the inner body extends and fixed to contact both sides of the frame.

As expected effects due to the above-described features of the present invention, since the reinforcing means for reinforcing the rigidity is provided at the joint portion between the scaffold and the both sides of the frame, no tearing or damage occurs even when a load is applied.

The above object and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

1 is a perspective view and an enlarged view illustrating the first embodiment of the frame reinforcement structure of the ladder according to the present invention, Figure 2 illustrates a second embodiment of the frame reinforcement structure of the ladder according to the present invention Figure 3 is a perspective view and an enlarged view of the main portion, Figure 3 is a cross-sectional view illustrating a third embodiment of the frame reinforcement structure of the ladder according to the present invention.

And below, the height-adjustable ladder will be described by way of example.

That is, a plurality of scaffold 200 is arranged at four intervals (frame; 100) arranged side by side at a predetermined interval and the upper end of the inner frame is connected to the hinge means 300, the inner, outer The frame 100 is coupled to slide up and down.

At this time, on the frame 100 coupled to both ends of the scaffold 200 is provided with a reinforcement means for preventing the tearing or damage that may occur in the coupling portion between each other in accordance with the characteristics of the present invention when a load is applied.

As a first embodiment of the reinforcement means, the plate-shaped metal reinforcement plate 10 is riveted to the outer end of the portion-side frame 100 adjacent to the footrest 200, that is, adjacent to both side ends of the footrest 200 It is fixedly installed through fixing means such as bolts and nuts.

By providing the metal reinforcing plate 10 as described above, the rigidity is reinforced to the frame 100 to which the scaffold 200 is coupled to prevent tearing or damage when a load is applied.

As a second embodiment of the reinforcing means, the main body 20 formed of a plate-shaped metal is fixed to the outer end of the frame 100 adjacent to the footrest 200, from the frame from the main body 20 The left and right side body 21 is integrally formed to integrally cover the side of the 100.

As an effect of the second embodiment, the main body 20 reinforces the rigidity of the frame 100 to which both side ends of the scaffold 200 are coupled, and the left and right side bodies 21 of the frame 100 Fixed to the side provides a greater rigidity reinforcement.

In addition, when the sub-body 22 is integrally extended in one of the left and right side bodies 21 to extend inwardly to surround the footrest 200, the footrest may be generated as well as rigid. Even if the damage occurs on the 200, the sub body 22 supports it, and thus, an effect of preventing a worker's safety accident due to a fall can be prevented.

As a third embodiment of the reinforcing means, the inner body 30 formed of a metal material is fixedly installed at the inner end of the frame 100 adjacent to the footrest 200.

The left and right side bodies 31 extend from the left and right sides of the inner body 30 so as to surround the bottom surface of the footrest 200, and in particular, the ends of the left and right side bodies 31 are framed. It is formed integrally extended to be tightly fixed to the side of the (100).

As an effect of the third embodiment, the inner body 30 is fixedly installed on the frame 100 to which both ends of the scaffold 200 are coupled, as well as the effect of rigid reinforcement, as well as the left and right sides. The body 31 may extend in a form surrounding the side of the frame 100 to double the effect of the rigid reinforcement.

In addition, the left and right side body 31 extends in a form that surrounds the footrest 200, thereby preventing the footrest 200 from being separated from the frame 100 when the footrest 200 is damaged, thereby causing an operator to fall. The possibility of a safety accident can be prevented beforehand.

On the other hand, the present invention described above, it is applicable to all the scaffolding, in particular, the hinge means 300 will be most ideal when applied to the coupling portion of the adjacent scaffold 200 and the frame 100.

This is because the force to be opened by the hinge means and the load of the operator are most intensively applied to the upper side scaffold 200 as described above.

While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone with it will know easily.

That is, it will be known to those skilled in the art that it is applicable to both the footrest of the ladder and the coupling portion of the frame.

1 is a perspective view and enlarged view illustrating the first embodiment of the frame reinforcement structure of the ladder according to the present invention

Figure 2 is a perspective view for explaining the second embodiment of the frame reinforcement structure of the ladder according to the present invention an enlarged view of the main portion

3 is a cross-sectional view illustrating a third embodiment of a frame reinforcement structure of a ladder according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: metal reinforcing plate 20: main body

21: left and right side body 22: sub body

30: inner body 31: left, right side body

100: frame 200: scaffold

300: hinge means

Claims

Hinges can be installed on two frames arranged side by side at regular intervals, with multiple scaffolds arranged at regular intervals, or hinged means to fold and unfold the frame in the middle of two frames arranged side by side at regular intervals. And a plurality of scaffolds arranged at a predetermined interval on the frame or a ladder arranged side by side at a predetermined interval, or a plurality of scaffolds disposed at a predetermined interval on the ladder, and the two frames are coupled to a sliding ladder. In

Frame reinforcement structure of the ladder is characterized in that the frame is coupled to the scaffold is provided with reinforcement means to prevent damage between the frame and the scaffold when a load is applied.

The method of claim 1,

The reinforcement means is a frame reinforcement structure of the ladder, characterized in that the plate-shaped metal reinforcement plate is fixed to the outer end of the frame adjacent to the footing.

The method of claim 1,

The reinforcement means includes a plate-shaped metal main body fixedly installed at an outer end of the frame adjacent to the foot plate;

Frame reinforcement structure of the ladder, characterized in that consisting of; the left, right side body integrally extending in a form that surrounds both sides of the frame from the body.

The method of claim 3,

Frame reinforcement structure of the ladder, characterized in that the sub body is formed integrally extending from the one side body of the left, right side body is formed integrally extending therefrom to surround the footrest.

The method of claim 1,

The reinforcement means includes an inner body of a metal material fixedly installed at an inner end of a frame adjacent to the footrest;

Frame reinforcement of the ladder, characterized in that consisting of; left and right side body is formed extending integrally to support the lower surface of the scaffold from the left, right sides of the inner body extending and fixed to contact both sides of the frame rescue.