JPH08199795A - Temporary scaffolding - Google Patents

Abstract

PURPOSE: To enable dimensional adjustment in the longitudinal direction of a scaffolding board, enhance a mounting advantase to a scaffolding frame and enhance movable workability in the case of its independent application. CONSTITUTION: An extension scaffolding 18 is installed so that it may be pulled out from an end face of a scaffolding board main body 10 with a handrail. An extension handrail 24, which is expandingly engaged with a handrail 12 of the scaffolding board main body 10, is installed to the extended scaffolding 18 while an engagement hook 32 is installed to the end of the extension scaffolding as well It is also arranged to be engageable with a scaffolding frame by using the scaffolding hook 32. Or a stepladder which receives the engagement hook 32 is connected thereto so that it may be possible to use on a single basis.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary scaffold, and relates to an improvement of a temporary scaffold for use in construction work of various plants and factories and construction work of various buildings.

[0002]

2. Description of the Related Art In the construction work of various plants and factories, a scaffolding frame is constructed by connecting pipes with a connector.
Pipe scaffolding that spans scaffolding boards and frame scaffolding constructed by combining frame materials and scaffolding boards are often used.
For example, a pipe scaffold is constructed along the building surface with a pipe frame composed of a rectangular combination in which pipes of a certain length are connected via a cross, T-shaped or L-shaped connector. And
The scaffold plate is hooked on a pair of horizontally arranged parallel pipe parts of the pipe framework to bridge the scaffold plate, and the scaffold passage is secured by continuously disposing the scaffold plate.

[0003]

However, in the conventional structure, if the equipment pipes interfere with the scaffolding material as the construction progresses, it is necessary to dismantle the temporary scaffolding and reassemble it to avoid the interference. Yes, the waste of time and effort for this is so large that it cannot be ignored. In particular, the scaffolding board is set to a predetermined length, so if you try to move a part of the assembled scaffolding, the horizontal length may become excessive or insufficient, which may cause a safety problem. It was

Further, in the assembly and repair work of pipes and ducts, generally, the line moving work is carried out while moving along the pipe line or the duct line rather than the work being stopped at one place. As a scaffold used for such a work, one having a structure in which a scaffold plate is laid between a set of stepladders is often used. In this kind of work, one work can be done in a short time, but it is often done by changing the position frequently, and the stepladder and the scaffolding board may be used with insufficient connection,
It is regarded as a problem.

The scaffolding board used for pipe scaffolding and frame scaffolding, which has been frequently used, such as the former, is standardized to have a fixed length, so that it can be reassembled or changed depending on the situation at the site. It had the drawback of being difficult to adjust. In particular, in order to avoid interference with equipment, when there are many bends or when the intervals between the vertical frames cannot be made constant, special measures such as binding the scaffolding plate with steel wires were required.

In the latter case where the scaffolding plate is laid between a pair of stepladders, it is often provided with no safety protection means such as a handrail because it is used at a relatively low height. For this reason, there is a risk that a person working on the scaffolding plate may lose the balance, resulting in a fall accident.

The present invention has been made by paying attention to the above-mentioned conventional problems. First, it is possible to adjust the dimension of the scaffold plate in the longitudinal direction, and it can be used for conventional pipe scaffolds and framework scaffolds. The purpose is to provide a scaffold. A second object is to provide a temporary scaffold having a structure that is highly safe and easy to handle, and can be easily assembled into an independent temporary scaffold.

[0008]

In order to achieve the above object, the temporary scaffolding according to the present invention firstly provides an extension scaffold that can be pulled out from the end face of the scaffolding plate main body with a handrail. Has an extended handrail that is telescopically fitted to the handrail of the scaffold plate body, and an engaging hook provided at the end of the extended scaffold.

Secondly, extension scaffolds are provided so that they can be drawn out from both end surfaces of the scaffolding plate body with handrails, and the extension scaffolding is extended and fitted to the handrails of the scaffolding plate body. A pair of stepladders are provided which are provided with engaging hooks at the ends of the extension scaffold and which have the engaging portions of the engaging hooks.

In these cases, the handrail and the extended handrail of the scaffolding plate main body can be moved up and down from the foot scene and can be folded at the intermediate portion.

The main body of the scaffolding plate is formed in a rectangular shape, but a footboard material may be provided on the surface, and a plurality of rows of through cavities along the longitudinal direction may be formed in the main body. The extension scaffold is provided with a bar that can be inserted into the through-hole cavity, and the left and right extension scaffolds can be inserted and pulled out alternately so that it can be pulled out to any length from both sides of the main body. be able to. Of course, the extension scaffold can be constructed so that it can be pulled out only from one end surface of the main body. In this case, the hooks are formed on the extension scaffold and the end surface portion of the scaffold body. The extension scaffold has a form in which the inserted rod is exposed when it is pulled out from the main body, but it is possible to prevent the foot from slipping off by reducing the gap between the rods, but if necessary, it can be folded and the tread plate material is extended. Can be simultaneously withdrawn to cover the surface.

Further, the range of application is expanded by providing reinforcing legs having expandable and contractible at the lower ends of the scaffold body and having casters at the lower ends so that they can be accommodated on the lower surface of the body when not in use. This is effective when used as an independent scaffold, and using this together with a stepladder improves safety.

[0013]

According to the above construction, since the extension scaffold that can be pulled out from the end surface of the scaffold body that is mainly used for working is provided, the distance between the holding portions provided on the scaffold frame that holds the scaffold is three times that of the scaffold body. It can be arbitrarily selected within a range of weak length. Further, since the scaffold plate body can also be moved left and right within the range of the allowable length, it is possible to secure the optimum position for the work place. In addition, a handrail is provided on the side edge of the scaffolding plate, and this can adjust the length by expanding and contracting the extension scaffolding, so that it functions as a reinforcing material that secures the safety of workers and at the same time reduces the bending of the scaffolding plate. Is doing.

Further, a pair of stepladders provided with hook engaging portions are provided, and hooks provided at the end portions of the extended scaffolds are engaged with the stepladders, whereby the scaffolding can be directly and easily formed on the ground. Since such a scaffold can be moved together with the stepladder, the efficiency of piping work and duct installation work can be improved.

In addition to the above construction, the handrail portion can be moved in and out vertically and the folding portion can be folded in the middle portion, so that the transportability becomes good, and the equipment is projected as the work progresses. This can be avoided to prevent interference.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete embodiment of a temporary scaffold according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view of a temporary scaffold according to the first embodiment. As shown in the figure,
This temporary scaffold has a scaffolding plate body 10 having a rectangular body structure. The scaffolding plate main body 10 has a structure in which a tread plate 12 is provided on the upper surface and a through cavity 14 is formed inside the body. Such a scaffolding plate body 10 can be easily manufactured by arranging a plurality of H-shaped cross-section members, welding the flange side edge portions that are joined together, and attaching the tread plate 12 to the upper surface portion. As a result, the through-cavity portions 14 having openings on both end surfaces of the body portion are formed, but the number of the through-cavity portions 14 is set to be even. Pipe scaffolds 16A are erected at the four corners of the upper surface of the scaffolding plate body 10, and a pair of main body handrails 16 are attached so that the upper ends of the scaffolds are connected by horizontal pipes 16B along the body side edges.

An extension scaffold 18 is attached to the scaffolding plate main body 10 using the through cavity 14 so that the scaffolding plate main body 10 can enter and exit from the end face portion of the main body. The extension scaffold 18 is composed of an end plate 20 formed in the same shape as the end surface of the scaffold plate body 10, and a bar member 22 that can be inserted from the end plate 20 into the through cavity 14. Bar 2
2 has a structure in which rectangular tubular bodies that fit into the through cavity 14 are arranged at a plurality of intervals, and when this is pulled out from the main body 10, the upper surface portion forms a foot scene. In the embodiment, the extension scaffolds 18 are arranged at both ends of the scaffolding plate body 10, and among the six rows of the through-cavity portions 14, for example, odd three rows are used for the bar material 2 of one extension scaffold 18.
There are two insertion holes, and even three rows are the rod insertion holes of the other extension scaffold 18. Therefore, both extension scaffolds 18 do not interfere with the body 10. In addition, the extension scaffold 18 is provided with an extension handrail 24 that can be extended with respect to the main body handrail 16. This is a pipe strut 24A which is erected from the end plate 20 of the extension scaffold 18, and a horizontal pipe 1 of the main body handrail 16 which is bent in an inverted L shape from the upper end thereof.
The horizontal pipe 24B is inserted into the 6B, and the horizontal pipe 24B is telescopically fitted so as to be able to move in and out of the horizontal pipe 16B on the main body side. As a result, the handrail is extended as the extended scaffold 18 is pulled out, and safety is ensured. The horizontal pipe 24B of the extended handrail 24 is inserted into the main body 10 side from the left and right, but the same main handrail 1
In order to prevent the two extended handrails 24 from interfering with each other, the pair of horizontal pipes 24B may have different diameters.

As shown in FIG. 2, the main body handrail 16 and the extended handrail 24 are held by a handrail holder 26 so as to be movable in the vertical direction. Handrail pipe support 16A, 24B
The hinge 28 is provided at a position at a height of approximately one-half, and a fixing sleeve 30 covering the hinge 28 is attached. The fixed sleeve 30 slides upward to release the hinge fixation. When the hinge 28 approaches the handrail holder 26, the holder 26 pushes up the sleeve 30 and the handrail 1
The upper half of 6, 24 can be bent to the scaffolding side.

Further, as described above, the extension scaffolds 18 can be moved in and out from both ends of the scaffold plate body 10, but the pair of hooks 32 is provided on the end plate 20 located at the outer end of the extension scaffold 18. . This is used to install the scaffold on a pipe scaffolding frame or the like. Needless to say, the hook 32 is provided on the extension scaffold 18 and the main body 1 when the extension scaffold 18 has a structure in which it can be pulled out only from one end of the scaffold plate body 10.

In the temporary scaffolding constructed as described above, when installing the above-mentioned scaffolding which becomes a passage after the scaffolding frame is formed, the extension scaffolding 18 is pulled out from the end of the scaffolding plate body 10 according to the installation interval, The hook provided on the plate 20 may be engaged with the attachment member. In this embodiment, the main body 1
Since the extended scaffolds 18 are provided at both ends of 0, the length can be adjusted within a range of approximately three times the length of the main body 10. As a result, the scaffolding frame can be arbitrarily configured, and particularly, the effect is exerted at a place to be a curved passage or the like, and a stable fixing and holding action by hook engagement can be obtained without binding with a steel wire or the like. Further, since the handrails 16 and 24 can be folded, it is possible to prevent the interference by folding the handrails 16 and 24 so as to avoid this when the equipment is overhanging due to the progress of construction.

Next, FIG. 3 shows a second embodiment. This embodiment is an example configured to be used as an independent scaffolding device. First, the reinforcement legs 3 are provided on the four corners of the bottom surface of the scaffold body 10.
4 is provided, which has a structure in which casters 36 are attached to the lower end. The reinforcing leg 34 is foldable at a mounting portion to the main body 10 and is accommodated on the lower surface of the main body when not in use. Further, the reinforcing leg 34 has a stretchable structure, and the leg length is variable by adjusting the insertion amount of the caster 36 on the mounting side half into the upper half. This variable structure can be easily realized by using a screw structure, but any structure such as a bayonet mechanism can be adopted. Further, a hook 32 is provided on the outer end surface of the extension scaffold 18 which is integrated with the scaffold main body 10, and a stepladder 38 is provided which locks the hook 32 and holds the height of the scaffold. Stepladder 38
The elevator ladder portion 40 and the column portion 42 can be opened in an inverted V shape, and a bendable opening stopper 44 is provided between them. The upper end of the stepladder 38 is a hook engaging portion 46 made of a pipe, and the hook 3 on the scaffolding side is attached to this.
The two are engaged so that they are integrated. The scaffolding is set to a certain height by the stepladder 38, but when the length of the reinforcing leg 34 is extended, it can be made higher than the height of the stepladder 38. The casters 36 can be used to move to the position. Other configurations are the same as in the first embodiment.

In such an embodiment, with the extended scaffold 18 pulled out from the scaffold body 10, the foot scene can be set to a certain height by the reinforcing legs 34 and the stepladder 38, and can be used for relatively low work. . This is particularly effective for assembling and repairing pipes and ducts, and when moving along the line, the reinforcing legs 34 can be extended and the stepladder 38 can be lifted to easily move to an adjacent work site, which is very advantageous. Is.

Next, FIG. 4 shows a third embodiment. FIG. 4 shows a state in which the extension scaffold 18 is housed inside the scaffold plate body 10 (FIG. 1A), a state in which it is pulled out (FIG. 2B), and a cross-sectional view (FIG. 3C). There is. This embodiment is an example in which the extension footboard 48 (48L, 48R) is attached to the extension scaffold 18. The extended scaffold 18L on the left side of the drawing is formed by connecting an extended step plate 48L to the upper edge of the end plate 20L so that the extended step scaffold 18L overlaps the upper surface of the main body step plate 12 in a state where the extended scaffold 18L is accommodated. Right extension scaffold 18R
A storage box 50 is formed in the end plate 20R portion of the above, and the footboard 48R is folded and stored therein. The front end of the folding tread 48R is connected to the edge portion of the main body tread 12, and is extended or folded and accommodated as the extension scaffold 18R expands and contracts. Of course, the left and right treads 48
Both have a folding structure, or the body tread 1
It is possible to have a laminated structure of 2.

In this embodiment, the bar 22 of the tread plate 48 is exposed as the extension scaffold 18 is pulled out to form a gap, but the extension tread plate 48 covers this gap to improve safety.

[0025]

As described above, according to the present invention,
Since the length of the scaffold is flexible in the longitudinal direction, it is possible to easily form a suitable scaffold according to the work place and work content, and especially the handrail height can be adjusted to facilitate installation work. In addition to being simple, it is possible to obtain an effect that interference with the equipment to be constructed can be adjusted at any time. Also,
By attaching a stepladder, the foot scene can be set longer, and at the same time, it becomes excellent in movability in the line direction when installing pipes.

[Brief description of drawings]

FIG. 1 is a perspective view of a temporary scaffold according to a first embodiment.

FIG. 2 is an explanatory diagram of a handrail of the scaffold.

FIG. 3 is a perspective view of a scaffold according to a second embodiment.

FIG. 4 is a side view and a cross-sectional view of a third embodiment before and after expansion and contraction.

[Explanation of symbols]

 10 Scaffolding plate main body 12 Stepping plate 14 Through cavity part 16 Main body handrail 18 Extended scaffolding 20 End plate 22 Bar material 24 Extended handrail 26 Handrail holder 28 Hinge 30 Fixed sleeve 32 Hook 34 Reinforcement leg 36 Caster 38 Stepping 40 Elevating ladder part 42 Support part 44 Opening stop 46 Hook locking part 48 Extension step plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masao Otsubo 1-14-1 Kanda, Uchikanda, Chiyoda-ku, Tokyo Within Nihon Plant Construction Co., Ltd. (72) Inventor Jun-ichi Okamoto 1-1-1, Uchikanda, Chiyoda-ku, Tokyo No. 14 at Hitachi Plant Construction Co., Ltd.

Claims (3)

[Claims] 1. An extension scaffold is provided so that it can be pulled out from an end face of a scaffold board body with a handrail, and the extension scaffold is provided with an extension handrail that is telescopically fitted to the handrail of the scaffold board body. A scaffold for temporary construction, characterized in that an engaging hook is provided at an end thereof. 2. An extension scaffold is provided so that it can be pulled out from both end surfaces of a scaffold board body with a handrail, and the extension scaffold is provided with an extension handrail that is telescopically fitted to the handrail of the scaffold board body. A scaffold for temporary installation, characterized in that an engaging hook is provided at an end of the step, and a pair of stepladders having an engaging portion of the engaging hook are provided. 3. The handrail and the extended handrail of the scaffolding plate main body are vertically movable from a foot scene and foldable at an intermediate portion.
Or the temporary scaffold described in 2.