JP7348148B2 - Handrail frame for stair openings in temporary scaffolding - Google Patents

Description

The present invention relates to a handrail frame for a stair opening of a temporary scaffold constructed at a construction site or a civil engineering work site.

Temporary construction scaffolding used at construction sites and civil engineering sites consists of multiple pillars, multiple horizontal members that connect these pillars, and is stretched between the horizontal members. It is constructed by appropriately combining multiple cloth frames with floors to form floors and passageways.

The cloth frames with floors of temporary scaffolding are installed on each of multiple floors that are set up at predetermined intervals along the height of the building, etc., and when moving to each floor, there is no space between the floors. The installed stairs are being used.

The stairs of the temporary scaffold are installed in a stair opening having a rectangular planar shape, and the girder side edge and girder side edge of the stair opening are provided with a stairway as seen in Non-Patent Document 1 and Patent Documents 1 and 2. , consists of a girder side frame arranged on the girder side of the stair opening, and a girder side frame swingably connected to the girder side frame and arranged on the girder side of the stair opening, and the fabric of the girder side frame is Clamps provided at both ends of the fabric material may be connected to the horizontal members of the temporary scaffold, or a vertical member provided with a clamp may be provided at one end of the fabric material, and the vertical members may be A handrail frame for the stair opening is provided, which is fixed by linking the grips to the stair girders, thereby ensuring safety.

Edited and published by Temporary Construction Industry Association, General Incorporated Association, “Temporary Equipment Certification Standards and Explanation (Standards and Certification Standards Set by the Minister of Health, Labor and Welfare)”, April 1, 2018, 8th edition, p. 139-144

Utility Model Publication No. 59-181159 Patent No. 3831247

By the way, in conventional handrail frames, at least one of the grip fittings provided on the fabric material tends to have a long attachment part, which makes it difficult to pack and store the handrail frame. , the bulk of that part required extra space, making it difficult to pack the handrail frame efficiently. In addition, this type of handrail frame can be fixed either between the horizontal members of the temporary scaffolding or between the horizontal members of the temporary scaffold and the girders of the stairs. It is impossible to change the fixing type of the handrail frame depending on the situation at the site, and it cannot be said that the work efficiency is good.

The object of the present invention is to propose a handrail frame for stair openings that can be packed without requiring extra space and whose fixing format can be easily changed depending on the site situation. It's there.

The present invention provides a plurality of pillars, a plurality of horizontal members that connect the pillars to each other, and a cloth with a floor that extends between the horizontal members and forms a walking path and a work floor on the upper surface thereof. A handrail frame provided at a stair opening of the temporary scaffold, comprising:
A handrail material held in a horizontal position and located at the top, a fabric material held in a horizontal position and located at the bottom, and both ends of the handrail material and both ends of the fabric material held in an upright position. A girder side frame is configured in combination with a pair of supporting columns that are connected to each other, and is arranged on the girder side of the stair opening,
One end of the fabric material is provided with a grip that can be detachably connected to the horizontal member of the temporary scaffold, and the other end of the fabric material is provided with an axis along the axis of the fabric material. A handrail frame for a stair opening in a temporary scaffold, characterized in that a convex portion that can be detachably connected to a connecting member that is connected to a girder of the stairs or a horizontal member of the temporary scaffold is provided.

In the handrail frame for stair openings with the above configuration,
1) Providing at least one middle beam member between the handrail material and the fabric material, each of which has both ends connected to one support material and the other support material;
2) The girder side frame has a girder side frame that is rotatably supported between the handrail material and the middle crosspiece material and is fixedly held on the gable side of the stair opening;
3) providing at least one reinforcing member between the handrail material and the middle rail material, one end of which is connected to the handrail material and the other end of which is connected to the middle rail material;
4) The linking member linked to the girder of the staircase includes a socket adapted to the convex part and connected to the convex part via a fastening means, and a diagonal member connected to the socket in an obliquely downwardly inclined position. , consisting of a clamping piece connected to the lower end tip of the diagonal member, sandwiching the stair girder from both sides and being grounded to the stair tread;
5) The clamping piece consists of a fixed piece located on one side of the stair girder material, and a movable piece that is slidably held by the fixed piece and clamps the stair girder material between the fixed piece and the fixed piece. To become a,
6) The linking member linked to the horizontal member of the temporary scaffold includes a socket adapted to the projection and connected to the projection via a fastening means, and a socket oriented along the axis of the fabric material. comprising an arm member connected to the arm member, and a gripping fitting connected to the arm member that can be detachably connected to the horizontal member of the temporary scaffold;
7) The protrusion has at least one groove or rib along the axis of the protrusion on its outer surface, and the socket has a rib or groove that is adaptable to the groove or rib. It is preferable as a concrete means for solving problems.

According to the present invention, a convex portion having an axis along the axis of the cloth material is provided at the end of the fabric material, and this convex portion is provided with a linkage that is linked to a stair girder material or a horizontal member of a temporary scaffold. By adopting a structure in which parts (grips, etc.) can be attached and removed, it is possible to remove and pack the linking parts when packing and storing the handrail frame. Can be packed.

Further, according to the present invention, linking members that can be linked to the horizontal members and linking members that can be linked to the stair girders are prepared, and by selecting and replacing them as appropriate, it is possible to respond to the situation at the site. This enables easy installation and improves work efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram schematically showing an embodiment of a handrail frame according to the present invention, in which (a) is a plan view thereof, and (b) is a side view thereof. It is a plan view showing a state in which the handrail frame shown in FIGS. 1(a) and 1(b) is attached to a stair opening of a temporary scaffold. It is a side view showing a state in which the handrail frame shown in FIGS. 1(a) and 1(b) is attached to a stair opening of a temporary scaffold. It is a figure which showed typically another embodiment of the handrail frame according to this invention, (a) is the top view, (b) is the side view. FIG. 4 is a plan view showing the handrail frame shown in FIGS. 4(a) and 4(b) attached to a stair opening of a temporary scaffold. FIG. 4 is a side view showing the handrail frame shown in FIGS. 4(a) and 4(b) attached to the stair opening of the temporary scaffold. It is a figure showing the connection state of the handrail frame and the linking member according to the present invention. It is a figure which showed the modification of a clamping piece. (a) to (c) are views showing the front, side, and back sides of the fixing piece, respectively. (a) to (c) are views showing the plane, side, and back of the movable piece, respectively. It is a figure which showed the main part of other embodiments of the handrail frame according to this invention.

Hereinafter, the present invention will be described in more detail with reference to the drawings.
FIGS. 1A and 1B are diagrams schematically showing an embodiment of a handrail frame according to the present invention, in which FIG. 1A is a plan view thereof and FIG. 1B is a side view thereof. Moreover, FIG. 2 and FIG. 3 are views showing the handrail frame shown in FIGS. 1(a) and 1(b) attached to the stair opening of the temporary scaffold, respectively, in terms of its plane and side.

The handrail frame according to the present invention includes a plurality of columns A, a plurality of horizontal members B that interconnect the columns A, and a walking path that is stretched horizontally between the horizontal members B and has a walking path on the upper surface thereof. , a cloth frame C with a floor forming a work floor etc., and a brace T with a leading handrail installed at a stair opening M of a temporary scaffold.

Reference numeral 1 in the figure is a girder side frame arranged on the girder side of the stair opening M. The girder side frame 1 includes a handrail material 1a held in a horizontal position and located at the top, a fabric material 1b held in a horizontal position and located at the bottom, and both ends of the handrail material 1a held in an upright position. and a pair of support members 1c connected to both ends of the fabric material 1b. The handrail material 1a, the fabric material 1b, and the support material 1c are made of metal hollow tubes.

Further, reference numeral 2 in the figure is a grip fitting that is provided at one end of the fabric material 1b and can be detachably connected to the horizontal member B of the temporary scaffolding, and 3 is a metal fitting that is provided at the other end of the fabric material 1b. This is a protrusion provided.

The convex part 3 can be made of, for example, a metal hollow tube having an axis L1 along the axis L of the fabric material 1b, and is a linking member linked to the horizontal member B of the temporary scaffolding. It can be connected to D.

Further, reference numeral 4 in the figure indicates a middle crosspiece provided in a horizontal position between the handrail material 1a and the fabric material 1b, and whose both ends are connected to one support member 1c and the other support member 1c; This reinforcing material is provided vertically between the handrail material 1a and the middle crosspiece 4, and has one end connected to the handrail material 1a and the other end linked to the middle crosspiece 4. As for the middle beam material 4 and the reinforcing material 5, metal hollow tubes are used similarly to the handrail material 1a, the fabric material 1b, and the support material 1c.

Moreover, the code|symbol 6 in a figure is a gable side frame which is rotatably supported between the handrail material 1a and the middle crosspiece material 4, and is fixedly held on the gable side of the stair opening M. The gable side frame 6 is slidable on a lower member 6a disposed directly above the middle crosspiece 4, an upper member 6b disposed immediately below the handrail material 1a, and at the ends of the lower member 6a and upper member 6b, respectively. The slider 6c is provided with connecting means 6d that can be connected to the reinforcing material 5 and the supports A of the temporary scaffolding, respectively. A metal member is also applied to the end frame 6.

The linking member D linked to the horizontal member B of the temporary scaffold includes a socket D1 that is adapted to the protrusion 3 and is connected to the protrusion 3 via fastening means such as bolts and nuts, and a shaft center of the fabric material 1b. An arm member D2 connected to the socket D1 in a direction along the direction L, and a grip D3 connected to the arm member D2 and detachably connected to the horizontal member B of the temporary scaffolding can be used. Regarding the grip D3, as shown in FIGS. 1(a) and 2, the mounting position of the arm member D2 is shown as an example eccentric from the axis L1 of the linking member D. It is preferable that the mounting position of D3 is aligned with the axis L1 of the linking member D, so that the same conditions can be achieved regardless of whether the stair opening M is on the right side or the left side of the cloth frame C with a floor. Can be installed.

In the handrail frame according to the present invention, since the linking member D can be attached and removed at the convex portion 3, the linking member D can be removed when packing the handrail frame, and the packing space can be minimized. can be limited. In this embodiment, the grip 2 is fixed to the end of the fabric material 1b, but the grip 2 may have the same structure as the linking member D.

FIGS. 4(a) and 4(b) are diagrams schematically showing other embodiments of the handrail frame according to the present invention, and FIGS. 5 and 6 are similar to those shown in FIGS. FIG. 3 is a diagram showing how the handrail frame is attached to the stair opening M in terms of its plane and side surfaces, respectively.

Such a handrail frame includes a gable side frame 6, a lower member 6a disposed directly above the middle crosspiece 4, an upper member (gable side handrail material) 6b disposed directly below the handrail material 1a, and a lower member at one end. 6a and the other end is connected to the body of the upper member 6b, and a slider 6f that is slidably arranged on the upper member 6b. A socket D1 that is adapted and connected to the convex portion 3 via a fastening means, a diagonal member D4 that is connected diagonally downward to the socket D1, and a diagonal member D4 that is connected to the lower end tip of the diagonal member D4 and that is connected to the girder member E1 of the staircase E. This is an example in which a clamping piece D5 that is clamped from both sides and grounded to a tread (step) E2 of the staircase E is applied.

In the stairway opening M, the gripping metal fittings for the cloth frame C with the floor and the gripping metal fittings for fixing the stairs are connected to the horizontal member B, and in particular, the gripping metal fittings for the cloth frame C with the floor and the gripping metal fittings for fixing the stairs are connected to the horizontal member B, and especially between the horizontal member B and the cloth frame C with the floor. For temporary scaffolding that uses a gap-less type floored fabric frame C with end covers to prevent gaps from forming, it is difficult to secure a space to attach the grip fitting D3 of the linking member D, and In order to secure space, it is necessary to use a cloth frame C with a floor that does not have end covers, and in this case, a gap is formed between the horizontal member B and the cloth frame C with a floor, and the gap There is also a concern that construction tools, etc., may be accidentally dropped through them. Regarding the gap between flooring materials, the Industrial Safety and Health Regulations (Article 563, Paragraph 1, Item 2) stipulates that the gap be 30 mm or less.

If the linking member D shown in Figures 4(a) and 4(b) above is used, there is no need to provide a gap for installing the grip D3 (it is possible to eliminate gaps in the working floor). Therefore, there is an advantage that the problem of accidentally dropping construction tools or the like can be eliminated. In addition, when such a linking member D is used, it can be temporarily stored on the tread E2 of the stairs E, and the work of attaching the handrail frame can be stably performed. It is preferable that the clamping piece D5 and the girder material E1 of the staircase E are connected via fastening means such as bolts and nuts arranged so as to pass through them, but the fastening means is limited to bolts and nuts. It never happens.

Since the handrail frame according to the present invention has no part that protrudes largely from its main body, not only can the packing space when packing the handrail frame be kept to the minimum necessary, but also the handrail frame can be easily removed by replacing the linking member D. The fixed format of can be easily changed.

In particular, there are many types of stairs used for the stair opening M of temporary scaffolding, which differ in step height, girder material dimensions, position, etc., and it is necessary to prepare in advance linking part materials D corresponding to these stairs. This makes it possible to share the handrail frame, improve work efficiency, and enable efficient construction of temporary scaffolding. Note that the handrail frame according to the present invention can also be applied to permanently installed stairs.

FIG. 7 is a diagram showing how the convex portion 3 of the handrail frame and the linking member D are connected according to the present invention. A long hole 7 passing through the convex portion 3 is provided, and by connecting the linking member D to the long hole 7 through fastening means such as bolts and nuts, the installation length of the linking member D can be adjusted within the range of the long hole 7. It can be adjusted within.

FIG. 8 is a diagram showing a modification of the holding piece D5. The clamping piece D5 shown here can be slid onto a fixed piece D51 having a shape as shown in FIGS. 10(a) to (c), which are held and positioned on the other side of the girder E1 and sandwich the girder E1 between the fixed piece D51 (range P in FIG. 8). It is composed of a movable piece D52 having a shape. By configuring the clamping piece D5 in this way, the handrail frame can be securely fixed to the girder E1, and the installation work can be facilitated.

The clamping piece D5 shown in FIG. 8 is provided with a side wall D511 to which a nut N is fixed at a position opposite to the fixed piece D51, and a bolt D521 attached to a movable piece D52 is engaged with the nut N. Although the movable piece D52 is slid by screwing, the sliding mechanism of the movable piece D52 is not limited to that shown in the drawings.

As shown in FIG. 11, the handrail frame according to the present invention is provided with a rib 3a on the outer surface of the convex part 3 along the axis L1 of the convex part 3, and a socket D1 that can be adapted to the rib 3a. A groove D11 may also be provided, thereby allowing the linking member D to be easily positioned relative to the convex portion 3. Although not shown, a groove may be provided on the outer surface of the convex portion 3, and a rib that can fit into the groove may be provided on the socket D1.

According to the present invention, it is possible to provide a handrail frame for a stair opening that can be packed without requiring extra space and whose fixing format can be easily changed depending on the situation at the site.

1 Girder side frame 1a Handrail material 1b Fabric material 1c Support material 2 Grip 3 Convex portion 3a Rib 4 Middle crosspiece 5 Reinforcement material 6 End frame 6a Lower member 6b Upper member 6c Slider 6d Connecting means 6e Diagonal material 6f Slider 7 Length Hole A Pillar B Horizontal member C Cloth frame with floor D Connecting member D1 Socket D11 Groove D2 Arm member D3 Grip fitting D4 Diagonal member D5 Clamping piece D51 Fixed piece D511 Side wall D52 Movable piece D521 Bolt T Brace with leading handrail M Stair opening E Stair E1 Girder E2 Tread N Nut

Claims (6)

It comprises a plurality of columns, a plurality of horizontal members that connect the columns to each other, and a cloth frame with a floor that extends between the horizontal members and forms a walking path and a work floor on the upper surface thereof. A handrail frame provided at the stair opening of the temporary scaffold, comprising:
A handrail material held in a horizontal position and located at the top, a fabric material held in a horizontal position and located at the bottom, and both ends of the handrail material and both ends of the fabric material held in an upright position. A girder side frame is configured in combination with a pair of supporting columns that are connected to each other, and is arranged on the girder side of the stair opening,
One end of the fabric material is provided with a grip that can be detachably connected to the horizontal member of the temporary scaffold, and the other end of the fabric material is provided with an axis along the axis of the fabric material. and provided with a convex part that can be detachably connected to a linking member linked to a stair girder or a horizontal member of a temporary scaffold ,
The connecting member connected to the girder of the stairs includes a socket adapted to the convex part and connected to the convex part through a fastening means, a diagonal member connected to the socket in an obliquely downwardly inclined position, and the diagonal member. A handrail frame for a stair opening in a temporary scaffold, characterized in that it consists of a clamping piece connected to the lower end tip of the material, sandwiching the girder of the stairway from both sides, and being grounded to the tread of the stairway. The clamping piece consists of a fixed piece located on one side of the stair girder, and a movable piece that is slidably held by the fixed piece and clamps the stair girder between it and the fixed piece. A handrail frame for a stair opening in a temporary scaffold according to claim 1 . According to claim 1 or 2 , there is provided between the handrail material and the fabric material at least one middle member whose both ends are connected to one support material and the other support material, respectively. Handrail frame for stair openings in the temporary scaffolding described. 3. The girder side frame is rotatably supported between the handrail material and the middle crosspiece material, and has a girder side frame that is fixedly held on the end side of the stair opening. Handrail frame for stair openings in temporary scaffolding described in . Claim 3 or 3 , characterized in that at least one reinforcing member is provided between the handrail material and the middle rail material, one end of which is connected to the handrail material and the other end of which is connected to the middle rail material. A handrail frame for a stair opening in the temporary scaffolding described in 4 . The protrusion has at least one groove or rib along the axis of the protrusion on its outer surface, and the socket has a rib or groove that is adaptable to the groove or rib. A handrail frame for a stair opening in a temporary scaffold according to any one of claims 1 to 5 .

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