JP3434006B2 - Corner L-shaped handrail for frame scaffolding - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a framed scaffolding corner L-shaped handrail attached to a corner of a framed scaffolding.

[0002]

2. Description of the Related Art Frame scaffolding used at construction sites
As shown in FIG. 5, a pair of gate-shaped building frames 90 are connected by two X-shaped cross braces 93 to form a four-column framework unit, and this unit is joined to the cross braces. It is configured by connecting it vertically and horizontally. Then, a floor plate 92 is placed between the horizontal pipes 91 of the building frame 90 so that a worker can come and go. The size of the crossover 93 is standardized to a fixed value, that is, the span of the pair of building frames 90 is 1829.
mm, 1524 mm, 1219 mm, 914 mm, etc. are standardized, and the width of the building frame 90 is also 1219 mm, 9
It is standardized to a predetermined value such as 14 mm, 762 mm, 610 mm. Although this frame scaffold is installed around the building under construction, the size of each building is different, so at the corners of the building, the frame scaffold that faces one side of the building and the frame scaffold that is orthogonal to this side are usually used. There is a gap between them.

For this reason, the building frames 90 at the ends are connected by the connecting members 96, and corner steps 94 are arranged in this gap to allow workers to come and go. It is necessary to provide a corner L-shaped handrail 1 in the inner part to prevent the operator from falling. Incidentally, in the outer portion of the corner, the crossover 93 and the building frame 90 and the connecting member 96 that connects the building frame 90 at the end and the building frame 90 serve as a handrail.

Conventionally, as the simplest handrail for corners, one having four single pipes and six clamps is known. However, such a handrail has a large member weight, and the number of tightening screws of the clamp is as many as 12 places. Therefore, the height of each of the handrails must be adjusted. In addition, there is a problem that there is a protrusion inside the passage, which is dangerous.

[0005]

For this reason, recently, an X handrail member and a Y handrail member, in which a slide pipe having a fixed portion to a building frame of a frame scaffolding is arranged between a pair of upper and lower horizontal pipes, are L handrail members. A corner L-shaped handrail configured in a V shape has been put into practical use. Since such a corner L-type handrail is preliminarily formed in an L-shape, it has the advantages of being lightweight and having a small number of screw fastening points and being easy to handle. But on the other hand,
As mentioned above, depending on the size of the building, the position of the building frame at the end of the frame scaffold facing one side of the building and the position of the building frame at the end of the frame scaffold orthogonal to this plane are different, so the part fixed to the building frame It is necessary to adjust the position of the slide tube having.

In order to adjust the position of the slide tube, sleeves are fixed to both ends of the slide tube, and the sleeves are slidably fitted to the upper and lower horizontal pipes of the X handrail member and the Y handrail member, respectively. . Then, when the position of the slide tube is determined, the thumbscrew screwed to the sleeve is screwed in, and the tip of the thumbscrew is pressed against the surface of the lateral pipe to fix it. In other words, in both slide tubes, the tip of the thumbscrew is fixed by pressing it against the surface of the horizontal pipe. However, such a fixing method has a problem in reliability, and if the thumbscrew is slightly loosened, handrails will be removed. There is a problem in that the railing may move due to wobbling, which is not preferable as a handrail used in high places.

Therefore, an object of the present invention is to provide a corner L-shaped handrail for a framed scaffold which is lightweight and easy to handle, can be securely fixed to a building frame of the framed scaffold, and is highly safe. .

[0008]

In order to achieve the above object, a corner L-shaped handrail for a framed scaffold of the present invention is a slide having a fixing portion to a building frame of a framed scaffold between a pair of upper and lower horizontal pipes. The X and Y handrails on which the pipes are placed are L
A corner L-shaped handrail for framed scaffolding configured in a V shape and attached to a corner of the framed scaffolding, in which sleeves fixed to both ends of the slide tube are provided as X railing material and Y railing material.
The upper and lower horizontal pipes of the handrail are slidably fitted to each other, and a plurality of pin holes for fixing the sleeve are formed at predetermined positions of the horizontal pipe of the X handrail to form a horizontal pipe of the Y handrail. The sleeve of the fitted slide tube is fixed by pressing the tip of the thumbscrew screwed to this sleeve against the surface of the lateral pipe, and the sleeve of the slide tube fitted to the lateral pipe of the X handrail material. Is fixed by inserting a thumbscrew screwed into the sleeve or a pin or bolt inserted into the sleeve into the pin hole.

[0009]

As described above, in order to attach the corner L-shaped handrail to the building frame, it is necessary to adjust the positions of the two slide pipes, but the building frame is standardized, and the present inventor The present invention has been completed by focusing on the fact that the span between a pair of building frames has a constant value and the building frame has only a few width dimensions, and is fitted to a horizontal pipe of a Y handrail material. If only the position of the sleeve of the slide tube can be adjusted steplessly, a plurality of pin holes for sleeve fixing should be provided at predetermined positions of the horizontal pipe of the X handrail material so that the sleeve can be fixed only at that position. However, the corner L-type handrail can be attached to the building frame.

Then, the sleeve of the slide pipe fitted to the lateral pipe of the X handrail material is fixed by inserting the thumbscrew screwed into the sleeve or the bolt inserted into the sleeve into the pin hole. , X The handrail can be securely fixed to the building frame, and does not move loosely. That is,
Even if the thumbscrew fixing the Y handrail is loosened a little, the X handrail is securely fixed to the building frame, so that the corner L-type handrail of the present invention does not move and safety is improved. improves.

If the X handrail member and the Y handrail member are foldable at their connecting portions, they become compact and easy to carry. If the horizontal auxiliary members of the building frame can enter between the pair of upper and lower horizontal pipes without connecting the ends of the pair of upper and lower horizontal pipes with a vertical pipe, the horizontal auxiliary members can be attached regardless of the size of the space between the horizontal auxiliary members. It becomes possible and the handrail can be set to an appropriate height by placing the horizontal pipe on the horizontal auxiliary member.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the embodiments shown in the drawings. As shown in FIGS. 1 to 3, the corner L-type handrail for frame scaffolding according to the present invention includes an X handrail member 10 and a Y handrail member.
The handrail member 20 is rotatably connected by a hinge fitting 30, and the X handrail member 10 and the Y handrail member 20 are attached to the corners of the frame scaffolding in an L shape, but when not in use, the X handrail member is used. 10 and the Y handrail 20 can be folded. Also, since it is rotatably connected by the hinge metal fitting 30,
It can be applied even when the corner of the building is not a right angle.

The X handrail member 10 and the Y handrail member 20 are
A pair of upper and lower horizontal pipes made by bending a metal pipe into a U shape 1
1, 21 are the main components. And the horizontal pipe 1
1, 21 are reinforced by vertical members 16 and 26 of round bars and pipes, but the vertical members 16 and 26 are fixed at positions close to the hinge fittings 30 and are opposite hinge fittings of the horizontal pipes 11 and 21. The side end is open.

Between the pair of upper and lower horizontal pipes 11 and 21, slide pipes 12 and 22 to which clamps 14 and 24, which are fixed portions to the building frame 90, are attached, are arranged so as to be slidable in the horizontal direction. That is, the slide tubes 12, 2
The sleeves 13 and 23 are fixed to both ends of the sleeve 2, respectively.
It is slidably fitted to the No. 1 unit.

A plurality of (four in the illustrated example, one of which is hidden by the sleeve 13) pin holes 15 are formed in the pair of upper and lower horizontal pipes 11 of the X handrail member 10. There is. No pin hole is formed in the Y handrail member 20,
The structural difference between the X handrail member 10 and the Y handrail member 20 is only the presence or absence of the pin hole 15. Here, the position of the pin hole 15 is determined corresponding to the standardized lateral width of the building frame 90, as will be described later, and if there are four pin holes 15, four types of building frames 90 are provided. Can correspond to. In most cases, the number of types of building frames 90 actually used is within four types, and provision of four pin holes 15 can accommodate almost all frame scaffolds.

A thumbscrew 18 is screwed to a sleeve 23 fitted to the lateral pipe 21 of the Y handrail member 20, and when the thumbscrew 18 is screwed in, the tip of the thumbscrew 18 is attached to the lateral pipe 2.
The sleeve 23 is fixed by pressure contact with the surface of 1. Therefore, the fixed position of the slide pipe 22 of the Y handrail member 20 can be adjusted steplessly.

On the other hand, the sleeve 13 of the X handrail member 10 is
As shown in FIG. 4A, for example, a fixing pin 17 or a hexagon bolt is inserted into the pin hole 15 and fixed to the lateral pipe 11. Alternatively, as shown in FIG. 4B, the tip end of the thumbscrew 18 screwed to the sleeve 13 is inserted into the pin hole 15 and fixed to the lateral pipe 11. Therefore, the slide tube 12 of the X handrail member 10 is fixed only at the position where the pin hole 15 is formed, and the fixed position cannot be adjusted steplessly. However, the fixing pin 17 and the thumbscrew 18 have the pin hole 15
Since it is inserted into the slide tube, it can be securely fixed and the slide tube 1
2 does not move unexpectedly.

When the positions of the slide tube 12 of the X handrail member 10 and the slide tube 22 of the Y handrail member 20 are adjusted, the clamps 14 and 24 are fixed to the building frame 90 so that the corner L type handrail of the present invention can be obtained. Although it is attached to the corner of the frame scaffold, as shown in FIG. 7, it is possible to make it an appropriate height by placing a part of the handrail on the lateral auxiliary member 95 of the building frame 90. And, the slide tube 12 of the X handrail member 10 is
As described above, since it does not move abruptly, even if the thumbscrew 18 of the Y handrail member 20 is slightly loosened due to vibration or impact, the corner L-type handrail of the present invention does not move abruptly and is high. It is possible to ensure safety.

6 and 7 show the case where the corner L-shaped handrail of the present invention is attached to the frame scaffolding using the wide building frame 90, and FIGS. 8 and 9 use the narrow building frame 90. It shows the case where it is attached to the frame scaffold. Here, a pair of building frames 9
When the span of 0 is, for example, 1829 mm, the width of the building frame 90 is standardized and there are only a few types. Therefore, as shown in FIG. 6, when a wide building frame 90 having a width of 1219 mm is used,
The position of the pin hole 15 may be determined so that L ₁ = 610 mm, and as shown in FIG. 8, the narrow building frame 9 having a width of 610 mm.
When 0 is used, the position of the pin hole 15 may be determined so that L ₂ = 1219 mm. Therefore, X handrail material 1
The number and position of the pin holes 15 formed in the horizontal pipe 11 of 0 may be determined according to the type of the building frame 90 to be used.
The fixed position of the slide pipe 12 of the handrail member 10 does not need to be adjustable steplessly.

[0020]

As described above, the corner L-type handrail of the present invention is an X handrail member in which a slide pipe having a fixing portion to a building frame of a frame scaffold is arranged between a pair of upper and lower horizontal pipes. Since the Y handrail and the Y handrail are L-shaped, they are lightweight and easy to handle, but the butterfly is screwed to the sleeve of the slide pipe by forming a pin hole in the horizontal pipe of the X handrail. screw,
Alternatively, since the pins and bolts inserted into the sleeve are inserted into the pin holes and fixed, the corner L-type handrail can be securely attached to the corners of the frame scaffolding and has high safety.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a plan view of an embodiment of the present invention.

FIG. 3 is a side view of the embodiment of the present invention.

FIG. 4 is an explanatory diagram of a fixing structure of a slide tube.

FIG. 5 is an explanatory diagram of a corner of a frame scaffold.

[Fig. 6] Corner L on a frame scaffold using a wide building frame
It is a top view which attached the model handrail.

[Figure 7] Corner L on a framed scaffold using a wide building frame
It is a front view which attached the model handrail.

[Figure 8] Corner L on a frame scaffolding using a narrow building frame
It is a top view which attached the model handrail.

[Figure 9] Corner L on a frame scaffolding using a narrow building frame
It is a front view which attached the model handrail.

[Explanation of symbols] 1 corner L type handrail 10 X handrail material 20 Y handrail material 11,21 Horizontal pipe 12,22 slide tube 13,23 sleeve 14,24 clamp 15 pin hole 17 fixing pin 18 thumbscrew 30 hinge fittings 90 building frames

Claims (3)

(57) [Claims] 1. An X handrail member and a Y handrail member, in which a slide pipe having a fixing portion of a frame scaffold to a building frame is arranged between a pair of upper and lower horizontal pipes, are formed in an L-shape to form a frame scaffold. A corner L-shaped handrail for frame scaffolding attached to a corner, wherein sleeves fixed to both ends of the slide pipe are
The upper and lower horizontal pipes of the handrail member and the Y handrail member are slidably fitted respectively, and a plurality of pin holes for sleeve fixing are formed at predetermined positions of the horizontal pipe of the X handrail member. The sleeve of the slide pipe fitted to the horizontal pipe of the sliding material is fixed by pressing the tip of the thumbscrew screwed to this sleeve against the surface of the horizontal pipe, and is fitted to the horizontal pipe of the X handrail material. The sleeve of the slide tube is a corner L-shaped hand for a frame scaffold, characterized in that a thumbscrew screwed to the sleeve, or pins and bolts inserted into the sleeve are fixed by being inserted into the pin holes. Surprising. 2. The corner L-shaped handrail for frame scaffolding according to claim 1, wherein the X handrail member and the Y handrail member are foldable at their connecting portions. 3. The pair of upper and lower horizontal pipes is characterized in that the ends thereof are not connected by the vertical pipes, and the horizontal auxiliary material of the building frame can enter between the pair of upper and lower horizontal pipes. 1
Alternatively, the corner L-shaped handrail for frame scaffolding according to claim 2.