JP2017160747A - Handrail frame of stairs opening part in temporary scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a handrail frame of a stairs opening part in a temporary scaffold capable of omitting complicated work required for installing and removing a baseboard.SOLUTION: A temporary scaffold has a plurality of columns 1, a plurality of bracket materials 2a for mutually joining the columns 1, and a floored ledger frame 3 extended between the bracket materials 2a and forming a walking passage and a work floor on its upper surface. In a handrail frame provided in a stairs opening part M of the temporary scaffold, the handrail frame comprises a girder side frame 4a arranged on the girder side of the stairs opening part M and a gable side frame 4b arranged on the gable side of the stairs opening part M and collapsibly connected between the girder side frame 4a and itself, and the girder side frame 4a is provided with a girder side baseboard 5 arranged along a girder side edge part of the stairs opening part M, and the gable side frame 4b is provided with a gable side baseboard 6 arranged along a gable side edge part of the stairs opening part M.SELECTED DRAWING: Figure 1

Description

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

  Temporary scaffolds for construction used at construction sites and civil engineering sites are composed of a plurality of struts, a plurality of arm timbers that connect these struts to each other, and arm arms. It is constructed by appropriately combining a plurality of cloth frames with floors that form the floor.

  Temporary scaffolding cloth frames with floors are installed in each of multiple levels provided at predetermined intervals along the height of the building, etc. The installed staircase is used.

  Specifically, the staircase of the temporary scaffolding is constructed by providing a staircase opening in the shape of a plane rectangle at the part where the cloth frame with the floor is installed, and assembling the main part of the staircase to the staircase opening. A handrail frame is attached to the girder side edge and the wife side edge of the staircase opening from the viewpoint of ensuring safety.

  Such a handrail frame has an L-shape (plan view) including a girder side frame disposed on the girder side of the staircase opening and a wive side frame disposed on the wife side of the staircase opening and connected to the girder side frame. As a prior art regarding this point, for example, a handrail frame disclosed in Patent Document 1 is known.

JP 2014-55494 A

  The handrail frame disclosed in the above document has a gripping member at both ends, a fabric material spanned between the arm wood and another arm wood arranged opposite to the arm wood, and a plurality of upward extending from the fabric material A plurality of handrail members connected in parallel to the fabric material and a wife handrail frame supported by the plurality of handrail members and extended to the wife side of the temporary scaffold, The handrail frame has one end extended to the upper position of the other arm lumber and the other end attached to one of the columns, and according to this, the wife side handrail frame Can be arranged in parallel with the arm wood above the arm wood, it is possible to eliminate the substantially triangular blank portion formed between the wife side edge of the staircase opening and the wife side handrail frame, It was said that a highly safe handrail frame for staircase openings could be provided.

  By the way, in recent years, in this type of handrail frame, in order to further enhance safety, it has become mandatory to install baseboards having a height of about 100 mm on the spar opening side and the wife side, respectively. (In relation to Article 563 of Occupational Safety and Health Act Regulations), in order to respond, complicated work (including removal of the skirting board) is required to fix the board material that substitutes for the skirting board to the column of the handrail frame with a wire. However, there was a need for improvement.

  The subject of this invention exists in the place which proposes the handrail frame of the staircase opening part in the temporary scaffold which can implement | achieve efficient construction and dismantling of a temporary scaffold, without requiring complicated work, such as attachment and removal of a baseboard.

  The present invention provides a plurality of struts, a plurality of arm timbers that connect the struts to each other, and a cloth frame with a floor that is interposed between the arm timbers to form a walking passage and a work floor on the upper surface thereof. A handrail frame provided in a staircase opening of the temporary scaffold, the girder side frame disposed on the girder side of the staircase opening, and the wobble side of the staircase opening. A girder side frame that is foldably connected to the girder side frame, the girder side frame having a girder side skirting board arranged along a girder side edge of the staircase opening, and The frame is a handrail frame for a staircase opening in a temporary scaffolding having a wife side skirting board arranged along a wife side edge of the staircase opening.

  In the handrail frame of the staircase opening having the above-described configuration, the girder side frame includes a lower member that is passed in a horizontal posture between the arm timbers, and a first frame that stands up at the end of the lower member. An upper member connected in parallel to the lower member and connected to the upper end of the first frame member, and the upper member and the lower member disposed in parallel to the first frame member. A second bridge member connected to each other at the end, and a girder arranged in parallel with the lower member and the upper member and having one end connected to the first bridge member and the other end connected to the second bridge member The side frame member is connected to the first frame member so as to be rotatable immediately below the upper member and extends in a direction perpendicular to the axis of the first frame member. A horizontal member, a hanging material that is suspended and held at the extended end of the horizontal material, and one end of the hanging material It linked other end preferably composed of a gable crosspiece member swirling coupled to vertical bridging material of the first to.

  The girder-side skirting board rises on the upper surface of the lower member between the first and second framing members and forms a boundary between the floored cloth frame and the staircase opening. It is desirable to apply a thing, and for the wife side skirting board, the first base material of the girder side frame and the hanging material are raised at the same horizontal plane as the girder side skirting board with the floor. It is desirable to apply what forms the boundary between the fabric frame and the staircase opening and is connected to the first rack member so as to be able to rotate.

  Further, in the handrail frame of the staircase opening portion having the above-described configuration, the horizontal member, the wife side bar member, and the wife side skirting board have a convolution axis that is concentric with the axis of the first frame member. Those are preferred. The girder side frame may be provided with at least one reinforcing frame for connecting the girder side beam member and the upper member to each other.

  Further, the girder-side beam member can be provided with a recess for receiving an interference portion with the hanging material when the handrail frame is folded, and the hanging material has an interference with the beam-side beam member when the handrail frame is folded. A recess for receiving the site can be provided.

  According to the handrail frame of the staircase opening in the temporary scaffold of the present invention, since the baseboard is provided in advance in each of the girder side frame and the wife side frame, the baseboard is installed at the same time as the handrail frame is installed, attached and removed. This eliminates the need for complicated work for attaching and detaching the skirting board.

  As for the wife side frame, since the horizontal member, the wife side beam member, and the wife side skirting board have the rotation axis concentric with the axis of the first frame member, the movable range of the wife side frame is It is greatly expanded.

  Moreover, according to the handrail frame of the present invention, the strength of the girder side frame can be improved by providing at least one reinforcing frame for connecting the girder side beam member and the upper member to each other. Can be planned.

  Further, according to the handrail frame of the present invention, the girder-side beam member is provided with a recess for receiving an interference portion with the hanging material when the handrail frame is folded, or the hanging material is provided with the beam-side member when the handrail frame is folded. Since the concave portion for receiving the interference site is provided, it can be folded in a flat state when the handrail frame is stored.

It is the external appearance perspective view which showed typically the state which installed the handrail frame according to this invention in the staircase opening part of a temporary scaffold. It is the figure which showed the front of the handrail frame shown in FIG. It is the figure which showed the side surface of the handrail frame shown in FIG. It is the figure which showed the plane of the handrail frame shown in FIG. It is sectional drawing which showed the mounting state of the horizontal member, the wife side crosspiece member, and the wife side skirting board. It is the figure which showed the usage condition of a clamp. It is the figure which expanded and showed the principal part of the drooping material. It is the figure which showed the rotation situation of the wife side frame. It is a top view of the state which attached the handrail frame according to this invention to the staircase opening part.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
1 is an external perspective view schematically showing a state in which a handrail frame according to the present invention is installed in a staircase opening of a temporary scaffold, and FIGS. 2 to 4 are front and side views of the handrail frame shown in FIG. It is the figure which showed the plane.

  Reference numeral 1 in the figure is a column used when constructing a temporary scaffolding, 2a is an arm lumber that connects the column 1 along the wife side direction, and 2b is a column that connects the column 1 along the beam side direction. The cloth wood 3 to be joined is a cloth frame with a floor which is passed between the arm woods 2a and forms a walking path and a work floor on the upper surface thereof. The temporary scaffolding is constructed by appropriately combining the pillars 1, arm lumbers 2a and 2b, and the cloth frame 3 with a floor according to the external shape and height of the building structure. Although not shown, for example, the support column 1 and the arm lumber 2a, 2b are connected by inserting a wedge member provided at the end of the arm lumber 2a, 2b into a pocket provided in the outer peripheral wall of the prop 1, Although the cloth frame 3 with a floor is fixed by hooking the hook provided in the edge part to the arm lumber 2a, the connection means and fixing means are not specifically limited.

  Reference numeral 4 denotes a handrail frame installed in the staircase opening M. The handrail frame 4 includes a girder side frame 4a arranged along the girder side direction at the edge of the staircase opening M, and a girder side frame 4a arranged along the wife side direction at the edge of the staircase opening M. It is comprised from the wife side frame 4b connected so that folding is possible between. Here, the cloth frame 3 with a floor is comprised by the narrow and long plate-shaped body which consists of a pair of short side and a pair of long side, and is provided in the short side of the cloth frame 3 with a floor. When the floor-attached cloth frame 3 is passed to the arm lumber 2a by the hook, the long side of the floor-attached cloth frame 3 is the girder side and the short side is the wife side.

  Specifically, the girder side frame 4a includes a lower member 4a1 connected in a horizontal posture between the arm lumbers 2a and linked to the arm lumber 2a via hooks provided at both ends, and the lower member 4a1. A first frame member 4a2 rising at the end of the first member, an upper member 4a3 arranged in parallel to the lower member 4a1 and connected to the upper end of the first frame member 4a2, and parallel to the first frame member 4a2. A second frame member 4a4 that connects the upper member 4a3 and the lower member 4a1 to each other at the other end thereof, and is arranged in parallel with the lower member 4a1 and the upper member 4a3 and has one end mounted on the first frame. It consists of a beam-side beam member 4a5 connected to the material 4a2 and the other end connected to the second frame member 4a4. The lower member 4a1 has an expandable member S whose length can be changed by moving the lower member 4a1 along the longitudinal direction of the lower member 4a1 at at least one end thereof.

  Further, the wife side frame 4b is connected to the first frame member 4a2 so as to be able to rotate immediately below the upper member 4a3, and extends to the first frame member 4a2 in a direction orthogonal to or intersecting the axis L. The frame member 4b1, the hanging member 4b2 suspended and held at the extended end 4b1 'of the horizontal member 4b1, and one end connected to the hanging member 4b2 and the other end connected to the first frame member 4a2 so as to be rotatable. It consists of a wife side crosspiece member 4b3.

  Reference numeral 5 denotes a spar-side skirting board that rises on the upper surface of the lower member 4a1 between the first rack member 4a2 and the second rack member 4a4. The boundary between the cloth frame 3 with a floor and the staircase opening M is formed on the beam side by the beam-side skirting board 5. The girder-side skirting board 5 can be integrally connected to the first frame member 4a2 and the second frame member 4a4, but may be detachably connected via a bolt or the like.

  Reference numeral 6 denotes a wife side skirting board that rises at the same horizontal level as the spar side skirting board 5 between the first frame member 4a2 and the hanging member 4b2 of the spar side frame 4a. The wife side skirting board 6 is connected to the first frame member 4a2 so as to be rotatable, and forms a boundary between the cloth frame 3 with a floor and the staircase opening M on the wife side. The wife side skirting board 6 may be integrally connected to the hanging material 4b2 or may be detachably connected.

  The horizontal member 4b1, the wife side bar member 4b3, and the wife side skirting board 6 are rotatably arranged outside the first frame member 4a2, and the axis L1 that coincides with the axis L of the first frame member 4a2. And is connected to the first frame member 4a2 via the annular bodies 4b11, 4b31, 6a as shown in FIG. Thereby, the wife side frame 4b can be rotated around the first frame member 4a2 with the axis L1 as a rotation axis.

  In the example shown in the figure, the annular bodies 4b11, 4b31, 6a are each constituted by a short member, and in particular, the annular body 4b11, 4b31 is provided with a positioning member I for positioning the annular bodies 4b11, 4b31 (see FIG. 1), the annular bodies 4b11, 4b31, 6a can be constituted by a single tube, and can be rotatably arranged around the first frame member 4a2, and this is not a limitation. .

  Reference numeral 7 denotes a reinforcing frame for connecting the beam-side beam member 4a5 and the upper member 4a3 to each other. The number of the reinforcing frame members 7 can be increased as appropriate.

  Reference numeral 8 denotes a clamp that can be connected to the support column 1 or the reinforcing frame 7. The clamp 8 is linked to the support column 1 when the handrail frame 4 is installed in the staircase opening M, and is linked to the reinforcing frame 7 as shown in FIG. 6 when the handrail frame 4 is stored (folded). It has a function.

  9 is a recessed part provided in the drooping material 4b2. As shown in FIG. 7, the concave portion 9 receives an interference portion with the beam-side bar member 4 a 5 when folding the handrail frame 4, thereby realizing a flat folding.

  Further, 10 is a staircase provided in the staircase opening M. The staircase 10 is composed of a plurality of treads 10a and a pair of main body portions 10b that fix the width ends of the treads 10a on both sides thereof.

  As shown in FIGS. 1 to 4, the handrail frame of the staircase opening M in the temporary scaffold according to the present invention includes the girder side skirting board 5 and the gable side skirting board 6 on the girder side frame 4a and the wife side frame 4b, respectively. Because it is provided, it is possible to attach and remove the baseboards 5 and 6 at the same time when installing or removing the handrail frame, and it is possible to omit the troublesome work for attaching and removing the baseboards, Efficient construction and dismantling of temporary scaffolds can be realized.

  Further, since the horizontal member 4b1, the end-side bar member 4b3, and the end-side base plate 6 have a rotation axis concentric with the axis L of the first frame member 4a2, the rotation as shown in FIG. Further, as shown in FIG. 9 when the handrail frame is viewed in plan view, there is an advantage that the triangular blank portion formed in the wife side frame 4b can be made smaller.

  In addition, about the recessed part 9, it is also possible to provide in the beam | side beam member 4a5, and the recessed part 9 should just accept the interference site | part of the drooping material 4b2.

  ADVANTAGE OF THE INVENTION According to this invention, the handrail frame of the staircase opening part which does not require the complicated operation | work required for attachment and removal of a baseboard can be provided.

DESCRIPTION OF SYMBOLS 1 Support | pillar 2a Arm lumber 2b Arm lumber 3 Cloth frame with a floor 4 Handrail frame 4a Girder side frame 4a1 Lower member 4a2 First frame member 4a3 Upper member 4a4 Second frame member 4a5 Girder side frame member 4b Wife side frame 4b1 Horizontal member 4b1'Extension end 4b2 Droop member 4b3 Wife side beam member 5 Girder side skirting board 6 Wife side skirting board 7 Reinforcement frame material 8 Clamp 9 Recess 10 Stair M Stair opening

Claims (6)

Temporary structure comprising a plurality of struts, a plurality of arm timbers that connect the struts to each other, and a cloth frame with a floor that is inserted between the arm timbers to form a walking path and a work floor on the upper surface thereof A handrail frame provided at the staircase opening of the temporary scaffold for the scaffold,
A girder side frame arranged on the girder side of the staircase opening, and a wives side frame arranged on the gable side of the staircase opening and foldably connected to the girder side frame,
The girder side frame has a girder skirting board arranged along the girder side edge of the staircase opening, and the wives side frame is arranged on the wives side arranged along the wife side edge of the staircase opening. A handrail frame of a staircase opening in a temporary scaffold characterized by having a skirting board. The girder side frame is disposed in parallel with the lower member, a lower member that is passed between the arm timbers in a horizontal posture, a first frame member that rises at an end of the lower member, and the first member. An upper member connected to the upper end of the frame member, and a second frame member arranged in parallel with the first frame member and connecting the upper member and the lower member to each other at their other ends, The lower member and the upper member are arranged in parallel with each other, and one end is connected to the first frame member and the other end is connected to the second frame member.
The wife side frame is connected to the first frame member so as to be rotatable immediately below the upper member and extends in a direction orthogonal to the axis of the first frame member, A hanging material that is suspended and held at the extended end of the frame material, and a wife-side beam member that has one end connected to the hanging material and the other end rotatably connected to the first frame material,
The girder side skirting board rises on the upper surface of the lower member between the first frame member and the second frame member, and forms a boundary between the cloth frame with a floor and the staircase opening. And
The gable side skirting board rises between the first frame member of the girder side frame and the hanging material at the same horizontal level as the girder side skirting board, and the floor cloth frame and the staircase opening The handrail frame of the staircase opening in the temporary scaffolding according to claim 1, wherein the handrail frame forms a boundary and is connected to the first rack member so as to be able to rotate.   The staircase in the temporary scaffold according to claim 2, wherein the horizontal member, the wife side beam member, and the wife side skirting board have a rotation axis concentric with the axis of the first frame member. Handrail frame at the opening.   4. The staircase opening in the temporary scaffold according to claim 2, wherein the girder-side frame has at least one reinforcing frame for connecting the girder-side beam member and the upper member to each other. Part handrail frame.   The handrail of the staircase opening portion in the temporary scaffold according to any one of claims 2 to 4, wherein the beam-side bar member has a concave portion that receives an interference portion with the hanging member when the handrail frame is folded. frame.   The handrail of the staircase opening in the temporary scaffold according to any one of claims 2 to 4, wherein the hanging member has a concave portion that receives an interference portion with the beam-side beam member when the handrail frame is folded. frame.

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