KR200426543Y1 - A ladder which has a safety footing plate - Google Patents

Abstract

The present invention relates to a ladder provided with a safety scaffold, in particular in a ladder consisting of a strut and a scaffold; Consists of a rectangular frame, the scaffolding wire mesh is formed to be foldable by a plurality of hinges so that the operator can move from the upper surface, the hinge jaws are formed spaced apart from each other on one side in the longitudinal direction, the rotating rod at the bottom of the other side in the longitudinal direction A safety scaffold which is formed; A support rod axially coupled to each hinge jaw of the safety scaffold so as to be rotatable by a bolt, and having a supporting plate mounted on the scaffold of the ladder at a lower end thereof; And a fixing clamp fixedly installed at both ends of the support upper surface of the ladder to insert the rotary rod of the safety footrest.

According to the present invention as described above by providing a safety footrest folded up and down on the ladder, the operator can safely work on the safety footrest.

Ladder, safety scaffolding, folding, horizontal, base station, pole

Description

A ladder which has a safety footing plate

1 is a side view showing the overall configuration of a ladder equipped with a safety footrest according to the present invention.

Figure 2 is a perspective view showing the configuration of the safety scaffold shown in FIG.

Figure 3a, Figure 3b is a front view and a side view showing the operating state of the safety step according to FIG.

4A and 4B are front and side views schematically showing the configuration of the fixing member provided in the ladder and the ladder shown in FIG.

<Explanation of symbols on main parts of the drawings>

1: support 100: ladder

101: prop 103: scaffold

110: safety footing 111: scaffolding wire mesh

112: hinge 113: hinge jaw

116: fixed wire mesh 120: support rod

130: fixed clamp 140: fixed member

143: hook 144: chain

The present invention relates to a ladder, and more particularly, to a ladder provided with a safety footrest that can be folded up and down the safety footrest in the ladder, the angle can be adjusted to enable the operator to fold the safety footrest at a desired angle.

In general, mobile communication base stations use steel towers to extend the radio wave reach of antennas as much as possible. In urban areas, they are installed on the roof of buildings. I'm installing it.

The mobile base station calculates not only the weight of the main body itself, but also the total load including the number of antennas installed on the main body, the truss members for mounting these antennas, and the lightning arrester for lightning protection. Based on this, the structure and size of the main body and base are determined to secure the safety of the steel tower. In general, in the case of the steel tower installed on the roof of a building in a downtown area, a small steel pipe column having a triangular or square structure It is designed to take shape.

On the other hand, a ladder is used for work on such a mobile communication base station (also a general pole).

This ladder is a tool for performing work where the worker can not work in a standing state, the most basic structure is to put two ladder struts (parallel) in parallel and a plurality of at regular intervals on one side of the ladder strut It has a structure that forms two scaffolds.

However, the conventional ladder as described above is a structure that is supported by two ladder struts, and thus has a disadvantage of being unstable in a high place work requiring a long working time and thus cannot be used for various purposes.

In particular, the ladder for aerial work requires work in a more stable state, so it is difficult to work with a conventional ladder consisting of two ladder supports, so that three or more ladder supports are formed in a triangular pyramid or square pyramid shape, and on one side of the ladder support. By combining the scaffolding, it has a three-dimensional and stable structure.

However, in view of the recent trend of using a light metal material such as aluminum for the portable and robust structure of the ladder and the welding method for the bonding of them, the ladder struts have a triangular pyramid or square pyramid shape as described above. When standing up, ladder struts are inevitably inclined, and eventually one side of the ladder struts to be welded by closely contacting one side of the scaffold also forms an inclined surface. It is difficult to weld due to the poor adhesion between the ladder and the ladder. This causes the welding state to be weak and the binding force is weak, resulting in a high risk of breakage.

This requires an assistant worker who needs to level the scaffold or keep the welding area in close contact. Therefore, the work efficiency is significantly lowered, such as an increase in the number of workers, an increase in work cost, and an increase in defective rate.

In addition, the conventional ladder scaffolding is a situation that almost no consideration for the safety of workers, such as using a general pipe, which is a situation where the safety of the worker is seriously threatened.

An object of the present invention is to provide a ladder having a safety scaffold that allows a worker to safely work on a safety scaffold by providing a safety scaffold folded up and down on a ladder.

Features of the present invention for achieving the above object,

In the ladder which consists of a support post and scaffolding; Consists of a rectangular frame, the scaffolding wire mesh is formed to be foldable by a plurality of hinges so that the operator can move from the upper surface, the hinge jaws are formed spaced apart from each other on one side in the longitudinal direction, the rotating rod at the bottom of the other side in the longitudinal direction A safety scaffold which is formed; A support rod axially coupled to each hinge jaw of the safety scaffold so as to be rotatable by a bolt, and having a supporting plate mounted on the scaffold of the ladder at a lower end thereof; And a fixing clamp fixedly installed at both ends of the support upper surface of the ladder to insert the rotary rod of the safety footrest.

Here, the safety scaffold is further provided with an intermediate frame at a point 1/4 or 1/3 of the longitudinal direction, a fixed wire mesh is formed at one end based on the intermediate frame, the wire mesh for scaffolding is formed on the other side.

Here, the hinge jaw of the safety footrest is bent to be inclined upward 5 to 20 degrees so that the support rod can be interviewed with the safety footrest.

Here, the support rod is formed with a plurality of fixing holes in the longitudinal direction so as to correspond to each other on both sides once to enable height adjustment in multiple stages.

Here, the support plate of the support rod is a first base frame bent in the form of a translator; It is formed in a U-shaped plate shape to be mounted on the top of the step of the ladder, and includes a mounting ring attached to the bottom of the first base frame.

Here, a fixing member is further provided on the bottom of the support on which the fixing clamp is fixed to fix the ladder to a support such as an electric pole or a base station.

Here, the fixing member is formed in the form of a depression, the second base frame is formed through the through holes penetrating both sides, two extension plates are formed on one side; An extension rod formed in a shape bent in a memory form, one end of which is pressed to form a bolt hole, and the other end of which is vertically attached in a form corresponding to each other in each extension plate of the second base frame; Hooks made of J-shaped bolts are coupled to the nut in each bolt hole of the extension rod; And it is coupled to each hook to surround the support, one side is welded to any one hook is fixed, the other side has a chain formed to be coupled / separated by the user to the other hook.

Hereinafter, with reference to the accompanying drawings the configuration of the ladder provided with a safety footrest according to the present invention in detail as follows.

In the following description of the present invention, if it is determined that the specific description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to intention or custom of a user or an operator. Therefore, the definition should be made based on the contents throughout the specification.

1 is a side view showing the overall configuration of the ladder provided with a safety footrest according to the present invention, Figure 2 is a perspective view showing the configuration of the safety footrest shown in Figure 1, Figure 3a, Figure 3b according to Figure 2 Front and side views showing the operating state of the safety footrest, Figure 4a, Figure 4b is a front view and a side view schematically showing the configuration of the fixing member provided in the ladder and the ladder shown in FIG.

1 to 4, the ladder 100 provided with the safety scaffold according to the present invention includes a safety scaffold 110, a support rod 120, a fixing clamp 130, and a fixing member 140. Is done.

First, the safety footrest 110 is made of a rectangular frame so that the frame forming the "b" is welded to the jaw protruding upward, the footrest 111 for a plurality of hinges 112 on the upper surface so that the operator can move It is formed so as to be foldable, the hinge jaw 113 is spaced apart from each other protruding welding on one side in the longitudinal direction, the rotary rod 114 is fixed to the lower end of the other side in the longitudinal direction by welding.

Here, the safety scaffold 110 is welded to the intermediate frame 115 at the 1/4 or 1/3 point in the longitudinal direction to provide a space where the operator can stay when folding the scaffolding wire mesh 111, The fixed wire mesh 116 is fixed to one end of the intermediate frame 115 by welding, and the wire mesh 111 for scaffolding is fixed to the hinge 112 by the other side. That is, the scaffolding wire mesh 111 is formed longer to secure a space for the worker to go up and down.

Here, the hinge jaw 113 of the safety footrest 110 is 5 to 20 degrees upward to enable the interview with the safety footrest 110 when rotating the support rod 120 to be described later to minimize the volume during storage and movement It is bent to be inclined.

In addition, the support rod 120 is axially coupled to each side of the hinge jaw 113 of the safety footrest 110 so as to be rotatable by the bolt 121, the bottom is mounted on the footrest 103 of the ladder 100 The base plate 122 is welded and fixed.

Here, the support rod 120 is formed with a plurality of fixing holes 123 in the longitudinal direction to correspond to each other on both sides once the height can be adjusted in multiple stages, the end is provided with a protective cap 124 for protecting the operator do.

Here, the support plate 122 of the support rod 120 is a U-shaped plate shape so as to be mounted on the upper end of the first base frame 122-1 and the ladder 103 of the ladder 100 bent in the form of a translator And a mounting ring 122-2 welded to the bottom of the first base frame 122-1. At this time, the mounting ring 122-2 may be attached to have a certain inclination to be securely mounted when mounted on the footrest 103.

In addition, the fixing clamp 130 is fixed to both ends of the upper surface of the support 101 of the ladder 100 is inserted into the rotary rod 114 of the safety footrest 110.

The fixing member 140 includes a second base frame 141 having an open lower portion and having a longitudinally long "c" cross section, and two extension plates extending from both sides of one side of the second base frame 141. 141-2). The second base frame 141 is perforated with a through hole 141-1 penetrating both sides of the second base frame 141, and the extension plate tip portion is vertically bent from the tip portion and pressed to form a flat plate shape. An extension rod 142 in which a bolt hole 142-1 is bored in the center thereof is integrally extended, and the hook 143 having the end thereof bent into a hook shape in the bolt hole 142-1 of the extension rod 142. The end is coupled and fixed by the nut 143-1. And the hook 143 is coupled to both ends of the chain 144, which prevents the ladder applied to the present invention is separated from the support while wrapping the support (1), for example electric pole, one side of the chain 144 It is welded to the hook and fixed, and the other side is provided to be coupled / disconnected by the user to the other hook.

Hereinafter, described in detail with reference to the accompanying drawings the operation of the ladder provided with a safety footrest according to the present invention.

First, the fixing clamp 130 is fixed to the upper surface of the strut 101 of the upper end of one side of the ladder 100 that can be adjusted in length and three-dimensional shape in a form corresponding to each other.

Then, the rotating rod 114 of the manufactured safety footrest 110 is rotatably coupled to the fixing clamp 130, the support rod 120 to the hinge jaw 113 of the safety footrest 110 to the bolt 121 By axial coupling.

Then, the fixing member 140 is coupled to the rear surface of the foot plate 103 located at the top of the support 101 side where the fixing clamp 130 is formed.

When folding in order to move and store the ladder 100 in this state, the safety footrest 110 is rotated using the rotary rod 114 to interview the support 101, the support rod 120 hinge hinge 113 Rotate in and interview the safety scaffold 110. At this time, by using the chain 144 of the fixing member 140 fastening the safety footrest 110 and the support rod 120 to the support 101 may prevent the safety footrest 110 and the support rod 120 is rotated during the movement. have.

In the case of working using the ladder 100, the worker mounts it on the support 1 such as a pole or a base station with the prop 101 on which the safety footrest 110 is fixed at the top in the state where the ladder 100 is extended. .

Then, holding the support rod 120 with both hands, ascending through the footrest 103 of the ladder 100, the support plate 122 of the support rod 120 at the position where the safety footrest 110 is horizontal of the ladder 100 It is mounted on the footrest 103.

When the mounting is completed, the worker continuously lifts and lifts up the footrest wire mesh 111 of the safety footrest 110 while stepping up the footrest 103 of the ladder 100, and the footrest wire mesh 111 for the footrest is generated. Climb over the safety footrest 110 through the space.

Then, the worker steps on the fixed wire mesh 116, lowers the scaffolding wire mesh 111 to secure a work space, wraps the chain of the fixing member 140 around the support 1, and then hooks to fit the length After connecting to 143, the nut 143-1 is rotated to raise the hook 143 to prevent the chain 144 from coming off.

When the fixing is completed as described above, the operator stepped on the safety footrest 110 to perform the work.

On the other hand, when the worker comes down, the above operation may be reversed.

Therefore, when the operator mounts the ladder on the support, and then climbs, the safety footrest is extended and fixed horizontally, and then the ladder is fixed to the support and the chain by fixing the ladder again with the support and the chain. Work can be safely performed since the ladder does not deviate from the support or deviate horizontally.

According to the ladder provided with the safety scaffold of the present invention configured as described above, there is an advantage that the operator can safely work on the safety scaffold by providing a safety scaffold folded up and down on the ladder.

The present invention may be variously modified and may take various forms, and the detailed description of the present invention has been described only with respect to specific embodiments thereof. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

Claims (7)

In the ladder which consists of a support post and scaffolding; Consists of a rectangular frame, the scaffolding wire mesh is formed to be foldable by a plurality of hinges so that the operator can move from the upper surface, the hinge jaws are formed spaced apart from each other on one side in the longitudinal direction, the rotating rod at the bottom of the other side in the longitudinal direction A safety scaffold which is formed; A support rod axially coupled to each hinge jaw of the safety scaffold so as to be rotatable by a bolt, and having a supporting plate mounted on the scaffold of the ladder at a lower end thereof; And The ladder is provided with a safety footrest, characterized in that it is fixed to the upper end of the strut of the ladder including a fixing clamp is inserted into the rotating rod of the safety footrest. The method of claim 1, The safety footrest is, An intermediate frame is further provided at a 1/4 or 1/3 point in the longitudinal direction, and a fixed wire mesh is formed at one end based on the intermediate frame, and a safety scaffold is formed at the other side of the wire mesh for the scaffold. Ladder. The method of claim 1, The hinge jaw of the safety footrest, Ladder provided with a safety footrest, characterized in that the support bar is bent to be inclined upward 5 to 20 degrees to be interviewed with the safety footrest. The method of claim 1, The support rod, Ladder provided with a safety footrest, characterized in that a plurality of fixing holes are formed in the longitudinal direction so as to correspond to each other on both sides once the height can be adjusted in multiple stages. The method of claim 1, The support plate of the support rod, A first base frame bent in a translator form; The ladder is provided with a safety scaffold, characterized in that it is formed in a U-shaped plate shape so as to be mounted on the top of the scaffold of the ladder, and a mounting ring attached to the bottom surface of the first base frame. The method of claim 1, And a fixing member is further provided on a bottom of the support on which the fixing clamp is fixed, to fix the ladder to a support such as an electric pole or a base station. The method of claim 6, The fixing member, A second base frame formed in the shape of a recess and having through holes penetrating both sides, and having two extension plates formed at one side thereof; An extension rod formed in a shape bent in a memory form, one end of which is pressed to form a bolt hole, and the other end of which is vertically attached in a form corresponding to each other in each extension plate of the second base frame; Hooks made of J-shaped bolts are coupled to the nut in each bolt hole of the extension rod; And It is coupled to each hook to surround the support, one side is welded to one of the hooks and fixed, the other side is characterized in that it has a chain formed to be coupled / separated by the user to the other hook Ladder with safety steps.

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