JP6276073B2 - Widening / narrowing scaffolding member and temporary scaffolding incorporating this scaffolding member - Google Patents

Description

本発明は、建築現場や土木現場等の工事現場において、屋内外で仮設足場を構築する際に、作業床や作業者の通路などに用いられる足場の幅を仮設足場の中途位置から垂直方向および水平方向に拡げたり狭めたりすることができる拡幅・狭幅用足場部材及びこの足場部材を組み込んでなる仮設足場に関する。   In construction sites such as construction sites and civil engineering sites, the present invention sets the width of scaffolds used for work floors and worker's passages in the vertical and horizontal directions from the midway position of temporary scaffolds when building temporary scaffolds indoors and outdoors. The present invention relates to a widening / narrowing scaffolding member that can be expanded or narrowed in a direction, and a temporary scaffolding that incorporates the scaffolding member.

工事現場における仮設足場として、ビルや住宅の施行時などに用いられるくさび緊結式足場が知られている。くさび緊結式足場は、コマ等の連結金具を側面に有する垂直方向の支柱部材と水平方向のつなぎ材（水平材ともいう。また、短尺のつなぎ材のことを特に腕木材ということがある。）から組み立てられる垂直枠を適宜間隔で平行に複数個立設し、対向する垂直枠内の支柱部材の間をブレース材で連結することによって、対向する垂直枠とブレース材からなる枠組を構築した後、対向する垂直枠内のつなぎ材の間に床付き布枠が架け渡されてなる１段または複数段の足場であって、作業床、通路、ステージなどとして使用される。なお、ブレース材は１段ごとに連結してもよいし、複数段分を一度に連結してもよい。ここで、支柱部材、つなぎ材、ブレース材などには、鋼製やアルミニウム製などの管材や棒線材が用いられることが多い。   As a temporary scaffold at a construction site, a wedge-tight scaffold used for construction of a building or a house is known. A wedge-tight scaffold is a vertical strut member having a connecting piece such as a frame on its side and a horizontal connecting member (also called a horizontal member. In addition, a short connecting member is sometimes called an arm wood). After constructing a frame consisting of opposed vertical frame and brace material by connecting a plurality of vertical frames assembled in parallel at appropriate intervals in parallel and connecting the strut members in the opposed vertical frame with brace material A one-stage or multi-stage scaffolding in which a cloth frame with a floor is bridged between connecting members in opposing vertical frames, and is used as a work floor, a passage, a stage, and the like. In addition, a brace material may be connected for every step and may connect several steps at once. Here, pipe members and rod wires made of steel or aluminum are often used as support members, connecting materials, brace materials, and the like.

また、くさび緊結式足場は、対向する垂直枠の支柱部材の間をブレース材で連結する代わりに、対向する垂直枠内の支柱部材の間を垂直枠に対して直角に別のつなぎ材で水平方向に連結することによって、垂直枠とつなぎ材からなる枠組を構築することもできる。すなわち、垂直枠内に位置する第一のつなぎ材と、垂直枠間を直角に連結する第二のつなぎ材を水平２方向に直交して設置することで枠組を構築することもできる。ここで、垂直枠内の第一のつなぎ材の長さと、垂直枠間を直角に連結する第二のつなぎ材の長さは、それぞれ、垂直枠内の支柱部材間の水平距離および垂直枠間の水平距離とほぼ同じである。したがって、つなぎ材として、長短２種のつなぎ材が用いられる場合と、同じ長さのつなぎ材が用いられる場合とがある。   In addition, instead of using braces to connect the strut members of the opposing vertical frame, the wedge-tight scaffolding is horizontally connected between the strut members in the opposing vertical frame at a right angle to the vertical frame by another connecting member. By connecting in the direction, it is also possible to construct a frame consisting of a vertical frame and a connecting material. That is, the frame can also be constructed by installing the first tie material located in the vertical frame and the second tie material connecting the vertical frames at right angles perpendicularly to the two horizontal directions. Here, the length of the first connecting member in the vertical frame and the length of the second connecting member that connects the vertical frames at right angles are respectively the horizontal distance between the support members in the vertical frame and the vertical frame. Is almost the same as the horizontal distance. Therefore, there are a case where two types of binder materials are used as the binder material, and a case where a binder material having the same length is used.

さらに、くさび緊結式足場は、対向する垂直枠の支柱部材の間をブレース材で連結することに加えて、対向する垂直枠内の支柱部材の間を垂直枠に対して直角に別のつなぎ材で水平方向に連結することによって、垂直枠とつなぎ材とブレース材からなる枠組を構築することもできる。すなわち、垂直枠内に位置する第一のつなぎ材と、垂直枠間を直角に連結する第二のつなぎ材を水平２方向に直交するだけでなく、さらにブレース材でも連結することによっても枠組を構築するのであるから、枠組の連結をさらに強固にすることができる。上記と同じ理由で、つなぎ材として、長短２種のつなぎ材が用いられる場合と、同じ長さのつなぎ材が用いられる場合とがある。   Furthermore, in addition to connecting the strut members of the opposing vertical frames with braces, the wedge-tightened scaffold has another connecting material between the strut members in the opposing vertical frames perpendicular to the vertical frame. By connecting in a horizontal direction, a frame made up of a vertical frame, a connecting material and a brace material can be constructed. That is, the frame is formed not only by orthogonally crossing the first tie member located in the vertical frame and the second tie member connecting the vertical frames at right angles to the two horizontal directions but also by brace members. Since it is constructed, the connection of the frames can be further strengthened. For the same reason as described above, there are cases where two types of binder materials are used as the binder material, and a binder material having the same length is used.

このようにして、１段又は２段以上の段数を有するくさび緊結式足場からなる仮設足場が組み立てられる。そして、その段数は、架け渡される床付き布枠の段数で数えることができ、組み立てられる仮設足場の高さに応じて決定される。なお、複数段の床付き布枠を有する仮設足場を組み立てる際には、一段ずつ枠組を組み立ててもよいし、複数段の枠組を一挙に組み立ててもよい。   In this way, a temporary scaffolding composed of wedge-tight scaffolds having one or more stages is assembled. And the number of steps can be counted by the number of steps of the cloth frame with a floor to be bridged, and is determined according to the height of the temporary scaffold to be assembled. Note that when assembling a temporary scaffold having a plurality of stages of cloth frames with a floor, the frames may be assembled one by one, or a plurality of frames may be assembled all at once.

なお、くさび緊結式足場において、水平方向のつなぎ材とともに垂直枠を形成する垂直方向の支柱部材は１本当たり、側面の複数個所（２〜４個所程度）に連結金具が設けられている。その連結金具としては、支柱部材の側面の周囲に複数個設けられるコマや、支柱部材の側面に環状に設けられるフランジ等を用いることができる。そして、つなぎ部材の端部に設けられるクサビ金具をコマやフランジなどの連結金具に取り付け、クサビで緊結することができる。したがって、支柱部材のどの連結金具の個所でつなぎ部材を取り付けて緊結するかによって、垂直枠の形状が変わってくる。たとえば、支柱部材の最上部の連結金具につなぎ材を取り付けて緊結すれば「門形状」の垂直枠が形成されるし、支柱部材の中程の連結金具につなぎ材を取り付けて緊結すれば「Ｈ形状」の垂直枠が形成される。   In addition, in the wedge-binding scaffold, the vertical support members forming the vertical frame together with the horizontal connecting material are provided with connecting metal fittings at a plurality of side surfaces (about 2 to 4). As the connection fitting, a plurality of frames provided around the side surface of the support member, a flange provided in an annular shape on the side surface of the support member, or the like can be used. And the wedge metal fitting provided in the edge part of a connecting member can be attached to connection metal fittings, such as a top and a flange, and can be fastened with a wedge. Therefore, the shape of the vertical frame varies depending on which connecting bracket of the support member is attached and fastened. For example, if a connecting material is attached to and tightened to the uppermost connecting bracket of the support member, a "gate-shaped" vertical frame is formed, and if a connecting member is attached to the connecting member in the middle of the support member and then connected, An “H-shaped” vertical frame is formed.

図１に、くさび緊結式足場の一例を示す。(a)はくさび緊結式足場の正面図、(b)は(a)において円で示されたコマの周辺の拡大図、そして、(c)はくさび緊結式足場の右側面図である。   FIG. 1 shows an example of a wedge-tight scaffold. (a) is a front view of a wedge-binding scaffold, (b) is an enlarged view of the periphery of the top indicated by a circle in (a), and (c) is a right side view of the wedge-binding scaffold.

くさび緊結式足場の支柱１が建物１４の側とその反対側に各３本が立設されている。各々の支柱１は、複数のコマ４を側面に有する支柱部材３をホゾ材（図示せず。）を介して縦方向に継ぎ足すことによって形成されている。建物側の支柱１とその反対側の支柱１の間には、コマ４を介してつなぎ材２が上下に各１本水平方向に連結され、クサビ（図示せず）で緊結されることで、垂直枠が３つ形成されている。また、建物とは反対側で対向する支柱部材３の間には、コマ４を介してブレース材２１が斜めに取り付けられてクサビ（図示せず）で緊結されることによって、垂直枠とブレース材からなる枠組が構築される。ここでは、作業者（図示せず）の安全確保のために、さらに、対向する垂直枠内の支柱部材の間にコマ４を介して垂直枠に対して直角に手摺２０が水平方向に取り付けられてクサビで緊結されている。その後、対向する垂直枠内のつなぎ材２の間に、それぞれ床付き布枠９を１枚又は平行して２枚以上架け渡すことで、１段目の足場が形成される。なお、建物側にもブレース材や手摺を設置してもよい。また、対向する垂直枠内の支柱部材の間を垂直枠に対して直角に別のつなぎ材で水平方向に連結してもよい。   There are three support columns 1 for the wedge-type scaffolding on the building 14 side and the opposite side. Each strut 1 is formed by adding a strut member 3 having a plurality of tops 4 on its side surface in the vertical direction via a tenon material (not shown). Between the pillar 1 on the building side and the pillar 1 on the opposite side, one piece of connecting material 2 is connected in the horizontal direction through the top 4 and is fastened with a wedge (not shown). Three vertical frames are formed. In addition, a brace member 21 is obliquely attached between the column members 3 on the opposite side of the building via the top 4 and is fastened with a wedge (not shown), so that the vertical frame and the brace member are connected. A framework consisting of Here, in order to ensure the safety of an operator (not shown), the handrail 20 is attached in a horizontal direction at a right angle to the vertical frame via the top 4 between the supporting column members in the opposing vertical frame. It is tied with wedge. Then, the first-stage scaffolding is formed by linking one or two floor-attached cloth frames 9 between the connecting members 2 in the opposing vertical frame, respectively. In addition, you may install a brace material and a handrail also in the building side. Moreover, you may connect between the support | pillar members in the opposing vertical frame at a right angle with respect to a vertical frame with another connecting material in a horizontal direction.

なお、各々の支柱１は支柱部材３を縦方向に継ぎ足すことによって形成されるのであるが、垂直枠内での支柱部材３の継ぎ足し位置は、床付き布枠９が架け渡されるつなぎ材２の直上に設ける場合と、床付き布枠９が架け渡される上下２本のつなぎ材２の略中間地点に設ける場合とがある。この支柱部材３の継ぎ足し位置については、後述する。   Each support column 1 is formed by adding support members 3 in the vertical direction. The extension position of the support members 3 in the vertical frame is the connecting material 2 on which the cloth frame 9 with a floor is bridged. There are a case where it is provided directly above and a case where it is provided at a substantially middle point between the two upper and lower connecting members 2 on which the cloth frame 9 with a floor is bridged. The addition position of the column member 3 will be described later.

そして、支柱部材間を水平方向に連結するつなぎ材としては、鋼製やアルミニウム製などの管の両端にクサビ金具を溶接等で接合したものが用いられる。このつなぎ材の端部のクサビ金具を支柱部材のコマ等の連結金具に引っ掛けた後に、クサビによって緊結することで、支柱部材に固定することができる。   And as a connection material which connects between support | pillar members in the horizontal direction, what joined the wedge metal fitting to the both ends of pipes, such as steel and aluminum, by welding etc. is used. After the wedge metal fitting at the end of the connecting material is hooked on a connection metal fitting such as a frame of the column member, it can be fixed to the column member by tightening with the wedge.

図２は、くさび緊結式足場で用いられるつなぎ材の一例の正面図である。   FIG. 2 is a front view of an example of a binder used in a wedge-tight scaffold.

このつなぎ材２は、鋼製やアルミニウム製などの水平管３１の両端にクサビ金具２ｂを溶接等によって接合したものであって、その全長は支柱部材３の間の間隔に合わせてある。つなぎ材２の端部のクサビ金具２ｂを支柱部材３の側面に設けられたコマ４等の連結金具に引っ掛けた後に、クサビ２ａによって緊結することによって、支柱部材３の間を連結固定することができる。   The connecting member 2 is formed by joining a wedge metal fitting 2b to both ends of a horizontal pipe 31 made of steel, aluminum, or the like by welding or the like. After the wedge metal fitting 2b at the end of the connecting member 2 is hooked on a connection metal fitting such as the top 4 provided on the side surface of the column member 3, the column member 3 can be connected and fixed by tightening with the wedge 2a. it can.

このつなぎ材に関しては、つなぎ材自体の強度を増すために、あるいはつなぎ材を支柱部材に対して強固に連結するために、つなぎ材の下部から支柱に向けて、斜めに方杖を設けることができる。   With respect to this tie material, in order to increase the strength of the tie material itself or to firmly connect the tie material to the support member, it is possible to provide a cane diagonally from the lower part of the connection material toward the support member. it can.

図３は、くさび緊結式足場で用いられる方杖付つなぎ材の一例である。(a)は正面図である。(b)〜(d)はＡ部の拡大図であり、そのうち、(b)は左側面図、(c)は正面図、そして、(d)は底面図を表す。   FIG. 3 is an example of a connecting material with a cane used in a wedge-tight scaffold. (a) is a front view. (b)-(d) is the enlarged view of the A section, among which (b) is a left side view, (c) is a front view, and (d) is a bottom view.

この方杖付つなぎ材３０は、鋼製やアルミニウム製などの水平管３１と、この水平管３１を斜め下方から支える２本の方杖３２とからなる。方杖付つなぎ材の水平管３１の端部のそれぞれには、下向きの切り欠き部４０ａを有する端部板４０が溶接等で接合されるとともに、水平管３１の端部の下部には開口部３１ａが設けられており、水平管３１の端部を支柱部材に掛止することによって、水平管３１の端部を支柱部材に連結することができる。一方、方杖３２の下端にはクサビ金具３０ｂが溶接等によって接合されて設けられており、このクサビ金具３０ｂを支柱部材の側面に設けられたコマ等の連結金具に引っ掛けた後に、クサビ３０ａを打ち込むことによって、この方杖３２の下端を支柱部材に緊結することができる。ここで、方杖３２の下端に設けるクサビ金具３０ｂは、正面から見てＣ字形状を有しているので、クサビ金具３０ｂが支柱部材の側面に設けられたコマ等の連結金具を上下から挟んで内抱できる。したがって、方杖付つなぎ材３０を支柱部材に一旦連結すれば、方杖付つなぎ材３０が上下方向に移動しようとしても、支柱部材のコマ等の連結金具にぶつかるので、方杖付つなぎ材３０が支柱部材から外れることを防止できる。なお、方杖付つなぎ材３０の変形を防止するために、水平管３１の左右の端部近傍から、各１本の束材３４が垂直に設置され、それぞれの方杖３２を結ぶことによってそれぞれの方杖３２を上方から支持している。   This tie member 30 with a cane comprises a horizontal pipe 31 made of steel or aluminum, and two cane 32 that support the horizontal pipe 31 from obliquely below. An end plate 40 having a downward notch 40a is joined to each end of the horizontal pipe 31 of the connecting material with a cane by welding or the like, and an opening is formed below the end of the horizontal pipe 31. 31a is provided, and the end of the horizontal tube 31 can be connected to the support member by hooking the end of the horizontal tube 31 to the support member. On the other hand, a wedge metal fitting 30b is joined to the lower end of the cane 32 by welding or the like. After the wedge metal fitting 30b is hooked on a connecting metal piece such as a frame provided on the side surface of the column member, the wedge 30a is attached. By driving in, the lower end of the cane 32 can be fastened to the support member. Here, since the wedge metal fitting 30b provided at the lower end of the wand 32 has a C shape when viewed from the front, the wedge metal fitting 30b sandwiches the connection metal fitting such as a frame provided on the side surface of the support member from above and below. You can hold in. Therefore, once the connecting member 30 with the cane is connected to the support member, even if the connecting member 30 with the cane moves up and down, the connecting member 30 such as the top of the support member collides with the connecting member 30 such as the top member. Can be prevented from coming off from the support member. In order to prevent deformation of the connecting member 30 with the cane, one bundle member 34 is installed vertically from the vicinity of the left and right end portions of the horizontal pipe 31, and the respective canes 32 are connected to each other. The wand 32 is supported from above.

このように、複数の支柱部材と複数のつなぎ材を組み合わせ、そして、床付き布枠を対面するつなぎ材の間に架け渡すことで、作業床、通路、ステージなどとして使用される足場を複数段有する仮設足場を構築することができる。また、作業者の安全確保のために、この床付き布枠と平行して、隣接する支柱部材間に手摺が取り付けられる。また、仮設足場の上段と下段の間を行き来することができるように、上段のつなぎ材と下段のつなぎ材の間に斜めに階段部材を設置することができる。   In this way, a plurality of scaffolds used as work floors, passages, stages, etc. can be created by combining a plurality of support members and a plurality of connecting materials, and spanning between the connecting materials facing the cloth frame with a floor. A temporary scaffold can be constructed. Moreover, in order to ensure the safety of the operator, a handrail is attached between the adjacent strut members in parallel with the cloth frame with a floor. Further, a staircase member can be installed obliquely between the upper tie material and the lower tie material so that the temporary scaffold can be moved between the upper tier and the lower tier.

図４に、床付き布枠の一例を示す。(a)が平面図、(b)が正面図、(c)がこの床付き布枠を足場として使用した時の正面図、(d)が床付き布枠の左端面（(c)の円で囲んだ部分）の正面拡大図、そして、(e)が(d)のＡ−Ａ矢視平面図である。   FIG. 4 shows an example of a cloth frame with a floor. (a) is a plan view, (b) is a front view, (c) is a front view when the floored cloth frame is used as a scaffold, (d) is the left end surface of the floored cloth frame (circle of (c)) And (e) is a plan view taken along line AA in (d).

床付き布枠９は、通常、長尺の主材５０の１本又は２本以上と、主材の長手方向の両端部に取り付けられる掴み金具５１と断面コの字形の梁材（側板）５２から構成されている。通常、主材５０は水平面の床材部５０ａとその両縁側面を折り曲げてなる布材部５０ｂとからなる。長尺の主材５０の両端部に断面コの字形の梁材５２が取り付けられ、そして、長尺の主材５０の両端部の四隅に掴み金具５１がリベット５１ｃ等で固定されて取り付けられる。掴み金具５１は下面に湾曲部５１ａを有し、この湾曲部５１ａがつなぎ材２の上部曲面に載置されるので、掴み金具５１がつなぎ材２を掴んだ状態となる。なお、落下錠５１ｂを掴み金具５１に設けることによって、掴み金具５１をつなぎ材２に確実に掴ませることができる。なお、床付き布枠９の上を歩行する際に作業者が滑るのを防止するために、床材部５０ａの上面にはエンボス加工８３が施されることがある。また、床材部が幅方向に撓るのを防止するため、床材部の中央部の下側に桟木が設けられることがある。この床付き布枠９を、足場の作業床や通路の幅に応じて、１枚又は２枚以上並べて架け渡すことによって、作業床又は通路が形成される。   The cloth frame 9 with a floor is usually composed of one or more long main members 50, a grip fitting 51 attached to both ends of the main member in the longitudinal direction, and a U-shaped beam member (side plate) 52. It is composed of Usually, the main material 50 is composed of a floor material portion 50a in a horizontal plane and a cloth material portion 50b formed by bending both side surfaces thereof. A beam member 52 having a U-shaped cross section is attached to both ends of the long main member 50, and gripping metal fittings 51 are fixed and attached to the four corners of both ends of the long main member 50 using rivets 51c. The gripping metal 51 has a curved part 51 a on the lower surface, and this curved part 51 a is placed on the upper curved surface of the connecting material 2, so that the gripping metal 51 grips the connecting material 2. In addition, by providing the falling lock 51b on the gripping metal 51, the gripping metal 51 can be securely gripped by the connecting material 2. In addition, in order to prevent an operator from slipping when walking on the cloth frame 9 with a floor, the upper surface of the flooring part 50a may be embossed 83. Moreover, in order to prevent a flooring part from bending in the width direction, a crosspiece may be provided under the center part of the flooring part. A work floor or a passage is formed by laying one or two or more of the floor-attached cloth frames 9 side by side according to the width of the work floor of the scaffold or the passage.

以上のとおり、対向する垂直枠内のつなぎ材の間に水平に１枚または複数枚の床付き布枠を架け渡すことで、つなぎ緊結式足場からなる複数段の枠組を有する仮設足場を形成することができる。なお、つなぎ緊結式足場においては最下層から最上層まで支柱部材の設置間隔が通常は同一であるから、その仮設足場の枠幅は各段とも同じになる。   As described above, by temporarily laying one or more floor-attached cloth frames between the connecting members in the opposing vertical frames, a temporary scaffolding having a multi-stage frame structure composed of the connecting and fastening type scaffolding is formed. be able to. In the tethered type scaffolding, since the installation intervals of the support members are usually the same from the lowest layer to the uppermost layer, the frame width of the temporary scaffolding is the same in each stage.

ところが、仮設足場を組み立てる場所には、ひさし、塀、花壇などの障害物が設けられる場合がある。新築工事であれば、仮設足場の解体後に、ひさし、塀、花壇などの施工を行えばよいが、既存建物の改修工事では、このような障害物を避けて仮設足場を設置する必要がある。このため、仮設足場の枠幅を中途位置から上下方向に狭めたり拡げたりして設置することで対応せざるを得ない。   However, there are cases where obstacles such as eaves, cocoons and flower beds are provided at the place where the temporary scaffolding is assembled. In the case of new construction, it is only necessary to construct eaves, eaves, flower beds, etc. after dismantling the temporary scaffolding, but in the renovation work of existing buildings, it is necessary to install temporary scaffolding avoiding such obstacles. For this reason, the frame width of the temporary scaffold has to be dealt with by narrowing or expanding the frame width from the midway position in the vertical direction.

また、ひさし、塀、花壇などの障害物が設けられていない場所であっても、仮設足場内には上段と下段の足場を行き来することができるように、上段のつなぎ材と下段のつなぎ材の間に斜めに階段部材を設置することがある。この場合は、階段部材を設置する場所では、階段部材の幅の分だけ、足場の作業床や通路の幅が狭くなってしまうことになるため、建物の新築工事と改修工事を問わず、足場の作業床や通路の幅を確保するため階段部材が設置されている場所の枠幅を中途位置から水平方向に拡げる必要性が生じる場合がある。   In addition, even in places where there are no obstacles such as eaves, fences, flower beds, etc., the upper and lower ties are used so that the upper and lower scaffolds can be moved back and forth within the temporary scaffold. A staircase member may be installed diagonally between the two. In this case, at the place where the staircase member is installed, the work floor and passage width of the scaffold will be narrowed by the width of the staircase member. In order to secure the width of the work floor and the passage, it may be necessary to expand the frame width of the place where the staircase member is installed from the midway position in the horizontal direction.

図５は、枠幅約９００ｍｍの足場に階段部材を設置した一例である。階段部材１２の幅は約６６０ｍｍであるため、作業者１０が通ることができる通路幅は約２４０ｍｍとなってしまうことが分かる。   FIG. 5 is an example in which a staircase member is installed on a scaffold having a frame width of about 900 mm. Since the width of the step member 12 is about 660 mm, it can be seen that the width of the passage through which the operator 10 can pass is about 240 mm.

そして、図６は枠幅約１２００ｍｍの足場に階段部材を設置した一例である。階段部材の幅は約６６０ｍｍであるため、作業者１０が通ることができる通路幅は約５４０ｍｍとなる。したがって、階段部材が設置されている足場において、枠幅を約１２００ｍｍに拡げれば、十分な通路幅を確保することが出来るので作業者１０は余裕を持って階段部材１２の脇を通ることができる。   FIG. 6 shows an example in which a staircase member is installed on a scaffold having a frame width of about 1200 mm. Since the width of the staircase member is about 660 mm, the width of the passage through which the operator 10 can pass is about 540 mm. Therefore, if the frame width is expanded to about 1200 mm in the scaffold where the staircase member is installed, a sufficient passage width can be secured, so that the operator 10 can pass by the side of the staircase member 12 with a margin. it can.

特許文献１〜３には、枠幅を中途位置から上下で異なる仮設足場を構築するべく、障害物が存在する高さにおいては支柱間の幅を狭くして狭幅の足場を形成し、そして、障害物に邪魔されない高さにおいては支柱間の幅を広くして広幅の足場を形成することができる拡幅・狭幅用足場部材として、拡幅ブラケットおよび足場用ブラケットが開示されている。これらの拡幅・狭幅用足場部材は、足場の拡幅分または狭幅分に相当する長さの水平部材または水平アームを上部に有し、この水平材又は水平アームの端部上に、連結ピン（ホゾ）を介して、上段の支柱部材を縦方向にジョイントすることで、上段が拡幅または狭幅された枠組を形成しようとするものである。そして、この水平材又は水平アームを横地部材としてその上に床付き布枠が架け渡されることによって、上下方向に拡幅または狭幅された足場が形成された仮設足場となる。   In Patent Documents 1 to 3, in order to construct a temporary scaffolding with different frame widths from the middle position to the upper and lower positions, a narrow scaffold is formed by narrowing the width between the columns at the height at which the obstacle exists, and A widening bracket and a scaffolding bracket have been disclosed as a widening / narrowing scaffolding member capable of forming a wide scaffold by widening the struts at a height not disturbed by an obstacle. These widening / narrowing scaffolding members have a horizontal member or a horizontal arm having a length corresponding to the widening or narrowing of the scaffolding on the upper part, and a connecting pin on the end of the horizontaling material or horizontal arm. The upper strut members are jointed in the vertical direction via (hojo) to form a frame in which the upper portion is widened or narrowed. Then, the horizontal frame or the horizontal arm is used as a horizontal member, and a cloth frame with a floor is laid on the horizontal member, thereby forming a temporary scaffold in which a scaffold that is widened or narrowed in the vertical direction is formed.

特開２０１０−２０３１３８号公報JP 2010-203138 A 特開２０１２−２４１４９１号公報JP 2012-241491 A 特開２０１２−２４１４９２号公報JP 2012-241492 A

仮設足場を組み立てる際に、床付き布枠を架け渡した後にその床付き布枠上から作業者が支柱部材の間に連結金具を介して手摺を取り付けることもできるが、作業者の安全面を考慮すると、先行して取り付けることのできる先行手摺を用いるのが好ましい。先行手摺を用いると、作業者が上段の足場に立ったときには、すでに上段には先行手摺が設置されているから、作業者が足場から転落する恐れが少なくなるからである。足場を解体する場合も同様であり、作業者は下段の足場に降り立ってから、上段の足場の先行手摺を取り外すことができるので、作業者の安全が守られる。   When assembling the temporary scaffolding, the operator can attach a handrail between the strut members and the handrail via the connecting bracket after the floor-mounted fabric frame is laid. In consideration, it is preferable to use a leading handrail that can be attached in advance. This is because, when the preceding handrail is used, when the worker stands on the upper stage scaffold, the preceding handrail is already installed on the upper stage, so that the operator is less likely to fall from the scaffold. The same applies to the dismantling of the scaffolding, and the operator can remove the leading handrail from the upper scaffolding after getting off the lower scaffolding, so that the safety of the worker is protected.

先行手摺は、足場を組み立てる際に作業者が下段の足場から上段の手摺を先行して取り付けることができるものである。したがって、上段用のつなぎ材に手摺枠をつなぎ材の回りに回転可能な状態で仮置きし、下段の足場から手摺枠を約９０゜回転することによって支柱部材間に取り付け、先行手摺とすることができる。また、対向する垂直枠内の支柱部材の間をブレース材で連結する際に、ブレース材と手摺とが一体化されたブレース一体型手摺枠を用いることによって、先行手摺とすることもできる。   The preceding handrail allows the operator to attach the upper handrail in advance from the lower scaffold when assembling the scaffold. Therefore, the handrail frame is temporarily placed on the upper tie material in a rotatable state around the tie material, and the handrail frame is rotated by about 90 ° from the lower scaffold to be attached between the strut members and used as the leading handrail. Can do. Moreover, when connecting between the support | pillar members in the vertical frame which opposes with a brace material, it can also be set as a preceding handrail by using the brace integrated handrail frame with which the brace material and the handrail were integrated.

ところが、このような先行手摺を取り付けることができない場合には、作業者は手摺が設置されていない上段の足場に立ってから、支柱部材と手摺を設置することになるから、作業者が上段の足場から転落する危険がある。   However, if such a leading handrail cannot be attached, the worker will install the column member and the handrail after standing on the upper scaffolding where the handrail is not installed. There is a risk of falling from the scaffold.

図７および図８に、仮設足場の組立手順の２例（正面図）を示す。   7 and 8 show two examples (front view) of the assembly procedure of the temporary scaffold.

図７は、支柱部材の最上部の連結金具につなぎ材を取り付けて緊結してなる「門形状」の垂直枠を形成する場合である。円内の拡大図を右側に示す。作業者１０は、第３段の足場の上に立って、新たな支柱部材３を既設の支柱部材３の上にホゾ材３ａを介して縦方向に継ぎ足すことによって、新たな支柱部材３を立設しようとしている。   FIG. 7 shows a case where a “gate-shaped” vertical frame is formed by attaching and connecting a connecting material to the uppermost connection fitting of the support member. An enlarged view of the circle is shown on the right. The operator 10 stands on the third stage scaffolding, and adds a new column member 3 to the existing column member 3 in the vertical direction via the hozo material 3a. Trying to stand up.

このとき、作業者１０は上段用の支柱部材３を下段から立設することができないので、上段の手摺２０を先行して取り付けることができない。すなわち、先行手摺がない場合である。したがって、作業者１０は手摺２０が設置されていない上段の足場に立ってから、手摺２０の設置されていない状態で上段用の支柱部材３を下段の支柱部材３の上部に継ぎ足す作業をせざるを得ない。よって、作業者１０は最上段の足場から転落する危険がある。   At this time, since the operator 10 cannot stand the upper column member 3 from the lower stage, the upper handrail 20 cannot be attached in advance. That is, there is no preceding handrail. Accordingly, the operator 10 stands on the upper scaffold where the handrail 20 is not installed, and then performs the work of adding the upper support member 3 to the upper part of the lower support member 3 without the handrail 20 installed. I must. Therefore, the worker 10 has a risk of falling from the uppermost scaffold.

図８は、支柱部材の中程の連結金具につなぎ材を取り付けて緊結してなる「Ｈ形状」の垂直枠を形成する場合である。円内の拡大図を右側に示す。作業者１０は、第３段の足場の上に立って、新たな支柱部材３を既設の支柱部材３の上に縦方向に継ぎ足すことによって、新たな支柱部材３を立設しようとしている。   FIG. 8 shows a case where an “H-shaped” vertical frame is formed by attaching a connecting member to the middle connecting bracket of the column member and tightening the connecting member. An enlarged view of the circle is shown on the right. The worker 10 is standing on the third stage scaffolding, and intends to stand the new column member 3 by adding the new column member 3 in the vertical direction on the existing column member 3.

このときは、作業者１０が第３段の足場の上に立ったときには、既に第３段の足場用の先行手摺２０ａを備える第３段用の支柱３が立設されている。すなわち、先行手摺がある場合である。よって、作業者１０は手摺の設置されている状態で上段用の支柱部材３を継ぎ足す作業をすることになるから、作業者が第３段の足場から転落するおそれは大幅に減少する。   At this time, when the worker 10 stands on the third stage scaffolding, the third stage support column 3 having the preceding handrail 20a for the third stage scaffolding is already erected. That is, there is a preceding handrail. Therefore, since the worker 10 performs the work of adding the upper column member 3 with the handrail installed, the possibility that the worker falls from the third stage scaffold is greatly reduced.

ここで、上記文献１〜３で開示された拡幅・狭幅用足場部材をみてみると、床付き布枠を架け渡すための横地部材としての水平材又は水平アームを有しており、その水平材又は水平アームの一方の端部上に、短い支柱部材の２本がいずれも連結ピン（ホゾ）を介して、縦方向にジョイントされている。ここで、縦方向にジョイントされてなる短い支柱部材の２本が、通常の支柱部材１本分に相当しており、拡幅・狭幅用足場部材の上の段の足場の垂直枠の縦枠を構成することになる。   Here, when looking at the scaffolding member for widening and narrowing disclosed in the above-mentioned documents 1 to 3, it has a horizontal member or a horizontal arm as a horizontal member for bridging the cloth frame with a floor, and its horizontal Two of the short support members are jointed in the vertical direction via connecting pins (hozos) on one end of the material or the horizontal arm. Here, two of the short strut members jointed in the vertical direction correspond to one ordinary strut member, and the vertical frame of the vertical frame of the scaffold on the upper stage of the widening / narrow scaffolding member Will be configured.

この拡幅・狭幅用足場部材を組み込んで仮設足場を組み立てるときに先行手摺の設置が可能か否かを考察してみる。この短い支柱部材は通常の支柱部材の略半分の長さであって、通常の支柱部材の略半分の軽さであるから、この水平材又は水平アームの上に、先行手摺を備える短い支柱部材を縦に継ぎ足した拡幅・狭幅用足場部材であれば、作業者が持ち上げることができる重量限度内である。したがって、この水平材又は水平アームの上に、先行手摺を備える短い支柱部材を縦に継ぎ足した拡幅・狭幅用足場部材を下段の足場から上段の足場に取り付けておくことができるから、先行した柱に先行手摺を取り付けることにより作業者が上段の足場に立ったときには、既に上段の足場用の手摺が取り付けられていることになる。   Consider whether it is possible to install a handrail when the temporary scaffold is assembled by incorporating the widening / narrowing scaffolding member. The short strut member is approximately half the length of a normal strut member and is approximately half as light as a normal strut member. Therefore, the short strut member is provided with a leading handrail on the horizontal member or the horizontal arm. If the scaffold member for widening and narrowing is added vertically, it is within the weight limit that an operator can lift. Therefore, on this horizontal member or horizontal arm, it is possible to attach a scaffold member for widening and narrowing by vertically adding a short column member provided with a leading handrail from the lower scaffold to the upper scaffold. When the operator stands on the upper scaffolding by attaching the preceding handrail to the pillar, the upper scaffolding handrail is already attached.

しかしながら、短い支柱部材の２本を縦方向に継ぎ足して通常の支柱部材の１本分の長さを形成した場合には、図９に示すように、一つの段の足場の垂直枠の縦枠には２箇所のジョイント部３ｂができることになってしまう。   However, when two short strut members are added in the vertical direction to form a length corresponding to one normal strut member, as shown in FIG. In this case, two joint portions 3b are formed.

ジョイント部３ｂにはガタ（余裕代）を持たせる必要があるので、一つの段の足場の垂直枠の縦枠にジョイント部３ｂが２箇所もあると、足場全体の支持力が低下するだけでなく、足場全体の横揺れが強くなる。このため、図１０に見るとおり、追加されたジョイント部３ｂの近傍には、足場の枠組を強化するために、別途につなぎ材２ｃを追加するという手間が必要となる。   Since it is necessary to give the joint part 3b a backlash (margin), if there are two joint parts 3b in the vertical frame of the vertical frame of one step scaffold, the supporting force of the entire scaffold will only decrease. Without rolling, the rolling of the entire scaffold becomes stronger. For this reason, as shown in FIG. 10, in the vicinity of the added joint portion 3 b, it is necessary to add a connecting material 2 c separately in order to strengthen the scaffold framework.

本発明は、上記のような問題を解決するためになされたものであって、中途位置から上下または左右で異なる枠幅を有する仮設足場を構築する際に、先行手摺を設置できかつ仮設足場の剛性を確保できる拡幅・狭幅足場部材およびこの拡幅・狭幅足場部材を組み込んでなる仮設足場を提供することを目的とする。   The present invention has been made to solve the above-described problems, and when constructing a temporary scaffolding having different frame widths from the middle position to the upper and lower sides or from the left and right, a leading handrail can be installed and the temporary scaffolding An object of the present invention is to provide a wide / narrow scaffold member capable of securing rigidity and a temporary scaffold incorporating the wide / narrow scaffold member.

本発明者らは、上記のような問題点を解決するために種々の検討を重ねた。その結果、次の(a)〜(g)に示す知見を得た。   The present inventors have made various studies in order to solve the above problems. As a result, the following findings (a) to (g) were obtained.

(a) 引用文献１〜３にかかる拡幅・狭幅用足場部材を用いて、仮設足場の枠幅を中途位置から上下で異なる仮設足場を構築する際、先行手摺を設置しようとすると、一つの段の足場の垂直枠の縦枠には２箇所のジョイント部ができることになってしまう。一つの段の足場の垂直枠の縦枠にジョイント部３ｂが２箇所もあると、足場全体の支持力が低下するだけでなく、足場全体の横揺れが強くなる。このため、追加されたジョイント部３ｂの近傍には、足場の枠組を強化するために、別途につなぎ材２ｃを追加するという手間が必要となる。   (a) When constructing a temporary scaffold that is different in the frame width of the temporary scaffold from the midway position using the widening and narrowing scaffold members according to the cited documents 1 to 3, Two joint portions are formed in the vertical frame of the vertical frame of the step scaffold. If there are two joint portions 3b in the vertical frame of the vertical frame of one step scaffold, not only the support force of the entire scaffold is lowered, but also the roll of the entire scaffold becomes strong. For this reason, in the vicinity of the added joint part 3b, in order to strengthen the framework of a scaffold, the effort which adds the connecting material 2c separately is needed.

(b) したがって、２箇所のジョイント部ができることを阻止した上で、先行手摺を設置できる拡幅・狭幅用足場部材を検討したところ、床付き布枠を架け渡すための横地部材を略中央部に移すとともに、その横地材の両端部のそれぞれに、通常の支柱部材と同じ長さを有する建地部材の略中央部を直角に連結させてなる構成とすればよいことを着想した。すなわち、２本の建地部材と、両建地部材に対して直角に設置され両建地部材の略中央部を水平に連結する横地部材から構成させることによって、「Ｈ形状」の垂直枠を形成するのである。この建地部材と横地部材から形成される「Ｈ形状」の垂直枠の構造は、図８に示すつなぎ材と支柱部材からなる「Ｈ形状」の垂直枠と同様に、先行手摺の設置が可能となる。   (b) Therefore, after checking that a joint member for widening and narrowing that can be installed with a handrail after preventing the formation of two joint portions, the lateral member for laying the cloth frame with the floor is substantially at the center. It was conceived that a configuration in which a substantially central portion of a building member having the same length as that of a normal support member is connected at right angles to each of both end portions of the horizontal base material. In other words, the “H-shaped” vertical frame is formed by two building members and a horizontal member that is installed at a right angle to both building members and horizontally connects substantially the center portions of both building members. It forms. The structure of the “H-shaped” vertical frame formed from this building member and the horizontal member can be used to install a leading handrail, as is the case with the “H-shaped” vertical frame consisting of the connecting material and the support member shown in FIG. It becomes.

(c) ２本の建地部材と、両建地部材に対して直角に設置され両建地部材の略中央部を水平に連結する横地部材から構成される「Ｈ形状」の垂直枠だけでは、拡幅・狭幅用足場部材としては強度的に不十分である。これを解決するためには、両建地部材の上部近傍を水平に連結する上部水平部材と、両建地部材に対して斜角に設置され両建地部材間を略中央部から上部近傍にかけて斜めに連結する上部斜め部材を設置すれば、拡幅・狭幅用足場部材として剛性が確保されることが分かった。この上部水平部材及び斜め部材は拡幅・狭幅用足場部材に設置する先行手摺としても機能するので、先行手摺を備え、強度的にも剛性が確保された拡幅・狭幅用足場部材とすることができる。なお、建地部材の下部近傍を水平に連結する下部水平部材も設けると剛性はより向上するので、好ましい。また、両建地部材に対して斜角に設置され両建地部材間を略中央部から下部近傍にかけて斜めに連結する下部斜め部材を設けると、剛性はさらに向上するので、より好ましい。   (c) The “H-shaped” vertical frame consisting of two building members and a horizontal member that is installed at right angles to both building members and horizontally connects substantially the center of both building members. The scaffold member for widening and narrowing is insufficient in strength. In order to solve this, the upper horizontal member that horizontally connects the upper vicinity of the two building members and the upper horizontal member that is installed at an oblique angle with respect to both the building members from the substantially central portion to the upper vicinity. It was found that if an upper oblique member connected obliquely is installed, rigidity can be secured as a scaffold member for widening and narrowing. Since the upper horizontal member and the diagonal member also function as a leading handrail installed on the widening / narrowing scaffolding member, the upper horizontal member and the diagonal member shall be provided with a leading handrail and be a widening / narrowing scaffolding member that ensures rigidity in strength. Can do. In addition, since the rigidity improves more when the lower horizontal member which connects the lower part vicinity of a building-ground member horizontally is provided, it is preferable. In addition, it is more preferable to provide a lower diagonal member that is installed at an oblique angle with respect to both building members and that obliquely connects between the two building members from a substantially central portion to the vicinity of the lower portion, since the rigidity is further improved.

(d) 上記(c)においては、両建地部材の上部近傍を水平に連結する上部水平部材と、両建地部材に対して斜角に設置され両建地部材間を略中央部から上部近傍にかけて斜めに連結する上部斜め部材を設置することによって、先行手摺を備え、強度的にも剛性が確保された拡幅・狭幅用足場部材としたが、この上部斜め部材に代えて、横地部材と上部水平部材の間に両建地部材を水平に連絡する中上部水平部材を１本または複数本設けても、先行手摺とすることができる。ただし、この場合には拡幅・狭幅用足場部材には斜め部材が存在しないことになるから、強度的に問題が残る。したがって、上部斜め部材に代えて、中上部水平部材を設ける場合には、剛性を確保するために、両建地部材に対して斜角に設置され両建地部材間を略中央部から下部近傍にかけて斜めに連結する下部斜め部材を設ける必要がある。なお、建地部材の下部近傍を水平に連結する下部水平部材も設けると剛性はより向上するので、好ましい。   (d) In (c) above, an upper horizontal member that horizontally connects the vicinity of the upper portions of both building members, and an angle between the two building members that are installed at an oblique angle, the upper part between the two building members is located above the substantially central portion. By installing an upper diagonal member that is connected obliquely to the vicinity, a scaffolding member for widening and narrowing having a leading handrail and ensuring rigidity in strength is used, but instead of this upper diagonal member, a horizontal member Even if one or a plurality of middle upper horizontal members are provided between the upper horizontal member and the upper horizontal member so as to connect both the building ground members horizontally, it can be used as a leading handrail. However, in this case, there is no diagonal member in the wide / narrow scaffold member, so that a problem remains in strength. Therefore, when the middle upper horizontal member is provided instead of the upper diagonal member, it is installed at an oblique angle with respect to both building members in order to ensure rigidity, and between the two building members is approximately from the center to the lower portion. It is necessary to provide a lower oblique member that is obliquely connected to the top. In addition, since the rigidity improves more when the lower horizontal member which connects horizontally the lower part vicinity of a building-ground member is also preferable, it is preferable.

(e) 以上は、仮設足場の枠幅を中途位置から上下方向に異ならせる場合で説明してきたが、階段部材を設置する場合のように、仮設足場の枠幅を中途位置から水平方向に異ならせるときにも用いることができる。したがって、この拡幅・狭幅用足場部材は、立面的に見て仮設足場の中途位置から上下で異なる枠幅を有する仮設足場を構築する際だけでなく、平面的に見ても仮設足場の中途位置から左右で異なる枠幅を有する仮設足場を構築する際にも用いることができる。そして、この拡幅・狭幅用足場部材には２本の建地部材の上部近傍を水平に連結する上部水平部材と、２本の建地部材を斜めに連結する斜め部材が設けられているので、強固に剛接合されている。そして、この拡幅・狭幅用足場部材を構成する建地部材の一方の下端を、下段の足場を構成する支柱部材の上端に差し込むものであるから、上段の足場からの荷重を下段の足場に伝達することができる。もちろん、先行手摺を設置できるし、一つの段の足場の枠組を構成する縦枠部分にはジョイント部が１箇所形成されるだけであるから、通常の１層分の支柱と変わらす使用でき、足場全体の支持力を低下させることなく、足場全体の横揺れも抑制することができる。   (e) The above has been described for the case where the frame width of the temporary scaffold is varied from the midway position in the vertical direction, but the frame width of the temporary scaffolding is varied from the midway position to the horizontal direction as in the case of installing a staircase member. Can also be used. Therefore, this wide / narrow scaffolding member is not only for constructing a temporary scaffold having different frame widths from the middle position of the temporary scaffold when viewed from an elevation, but also when viewed in plan. It can also be used when constructing a temporary scaffold having different frame widths on the left and right from the midway position. And, since the scaffold member for widening and narrowing is provided with an upper horizontal member that horizontally connects the vicinity of the upper part of the two building members and an oblique member that obliquely connects the two building members. It is firmly and rigidly joined. And, since one lower end of the building member constituting the widening / narrowing scaffold member is inserted into the upper end of the support member constituting the lower scaffold, the load from the upper scaffold is applied to the lower scaffold. Can communicate. Of course, a handrail can be installed, and since only one joint part is formed in the vertical frame part that constitutes the framework of the one-stage scaffolding, it can be used in place of a normal one-layer support, Rolling of the entire scaffold can also be suppressed without reducing the supporting force of the entire scaffold.

(f) この拡幅・狭幅用足場部材を構成する建地部材と横地部材は、それぞれ、クサビ緊結式足場の垂直枠を形成する支柱部材とつなぎ材に対応する。そして、上記建地部材と支柱部材は縦方向に継ぎ足すことができる。このとき、支柱部材と同様に、ジョイント部となる建地部材上端には連結ピン（ホゾ材）を設け、この連結ピン（ホゾ材）を介して縦方向に連結するのが好ましい。連結ピン（ホゾ材）は固定タイプでもよいし、取り外しタイプでもよい。なお、建地部材の下端にはジョイント部が外れないように抜け止め機能ピンを設けるのがよい。   (f) The building member and the lateral member constituting the widening / narrowing scaffold member respectively correspond to the support member and the connecting member that form the vertical frame of the wedge-tight scaffold. Then, the building member and the column member can be added in the vertical direction. At this time, like the support member, it is preferable to provide a connection pin (jojo material) at the upper end of the building member to be the joint portion and to connect in the vertical direction via the connection pin (jojo material). The connecting pin (hojo material) may be a fixed type or a detachable type. In addition, it is good to provide a retaining function pin at the lower end of the building member so that the joint portion does not come off.

(g) この拡幅・狭幅用足場部材を構成する建地部材には、つなぎ材（方杖付きつなぎ材を含む）やブレース材だけでなく、両建地部材の略中央部を水平に連結する横地部材、両建地部材の上部近傍を水平に連結する上部、上中部および下部水平部材、両建地部材間を斜めに連結する上部および下部斜め部材等を連結することができるコマ等の連結金具を側面に設けることができる。また、別途、ブレース材や手摺の取付孔に嵌め合わせることができるロック金具も側面に設けることができる。   (g) The building materials that make up the widening and narrowing scaffold members are not only connecting materials (including connecting materials with a cane) and braces, but also approximately the center of both building materials connected horizontally. Horizontal members, upper and lower horizontal members that horizontally connect the upper vicinity of both building members, upper and lower diagonal members that connect the two building members diagonally, etc. The connecting fitting can be provided on the side surface. Separately, a lock fitting that can be fitted into a mounting hole of a brace material or a handrail can also be provided on the side surface.

本発明は、上記の知見に基づいて完成したものであって、その要旨は下記の(1)〜(6)の拡幅・狭幅用足場部材および下記(7)〜(8)の仮設足場にある。以下、総称して本発明という。   The present invention has been completed based on the above findings, the gist of which is the following (1) to (6) widening and narrowing scaffold members and the following (7) to (8) temporary scaffolding is there. Hereinafter, the present invention is collectively referred to as the present invention.

(1) 支柱部材に継ぎ足すことができる２本の建地部材と、両建地部材に対して直角に設置され両建地部材間の略中央部を水平に連結する横地部材と、両建地部材に対して直角に設置され両建地部材間の上部近傍を水平に連結する上部水平部材と、両建地部材に対して斜角に設置され両建地部材間を略中央部から上部近傍にかけて斜めに連結する上部斜め部材からなる拡幅・狭幅用足場部材。 (1) Two building members that can be added to the strut members, a horizontal member that is installed at a right angle to both building members, and horizontally connects substantially the center between both building members, and both buildings An upper horizontal member that is installed at a right angle to the ground member and horizontally connects the vicinity of the upper part between the two building members, and is installed at an oblique angle with respect to both the building members and between the two building members from the substantially central portion. A scaffolding member for widening and narrowing comprising an upper oblique member that is obliquely connected to the vicinity.

(2) さらに、両建地部材に対して直角に設置され両建地部材間の下部近傍を水平に連結する下部水平部材を設けてなる、上記(1)の拡幅・狭幅用足場部材。   (2) The widening / narrowing scaffolding member according to (1), further comprising a lower horizontal member that is installed at a right angle to both building members and horizontally connects the vicinity of the lower portion between both building members.

(3) さらに、両建地部材に対して斜角に設置され両建地部材間を略中央部から下部近傍にかけて斜めに連結する下部斜め部材を設けてなる、上記(1)または(2)の拡幅・狭幅用足場部材。   (3) The above (1) or (2) is further provided with a lower oblique member that is installed at an oblique angle with respect to both building members and that obliquely connects between both building members from the substantially central portion to the vicinity of the lower portion. Scaffolding material for widening and narrowing.

(4) 支柱部材に継ぎ足すことができる２本の建地部材と、両建地部材に対して直角に設置され両建地部材間の略中央部を水平に連結する横地部材と、両建地部材に対して直角に設置され両建地部材間の上部近傍を水平に連結する上部水平部材と、両建地部材に対して斜角に設置され両建地部材間を略中央部から下部近傍にかけて斜めに連結する下部斜め部材と、上記横地部材と上記上部水平部材の間で両建地部材間を水平に連絡する中上部水平部材からなる拡幅・狭幅用足場部材。 (4) Two building members that can be added to the strut members, a horizontal member that is installed at a right angle to both building members and that horizontally connects substantially the center between both building members, and both buildings An upper horizontal member that is installed at a right angle to the ground member and horizontally connects the vicinity of the upper part between the two building members, and an oblique angle with respect to both the building members, and the space between the two building members is substantially lower from the center. A widening / narrowing scaffolding member comprising a lower diagonal member that is obliquely connected to the vicinity, and a middle upper horizontal member that horizontally communicates between both building members between the horizontal member and the upper horizontal member.

(5) さらに、両建地部材に対して直角に設置され両建地部材間の下部近傍を水平に連結する下部水平部材を設けてなる、上記(4)の拡幅・狭幅用足場部材。   (5) The widening / narrowing scaffolding member according to (4) above, further comprising a lower horizontal member that is installed at a right angle to both building members and horizontally connects the vicinity of the lower portion between both building members.

(6) 建地部材の上端部にホゾ材を組み込んでなる、上記(1)〜(5)のいずれかの拡幅・狭幅用足場部材。   (6) The scaffold member for widening and narrowing according to any one of (1) to (5) above, wherein a tenon material is incorporated into the upper end portion of the building member.

(7) 上記(1)〜(6)のいずれかの拡幅・狭幅足場部材を組み込んでなる仮設足場。   (7) A temporary scaffold comprising the widened / narrow scaffold member according to any one of (1) to (6) above.

(8) 階段部材を組み込んでなる、上記(7)の仮設足場。   (8) The temporary scaffold according to (7) above, which incorporates a staircase member.

本発明によれば、中途位置から上下または左右で異なる枠幅を有する仮設足場を構築する際に、先行手摺を設置できかつ仮設足場の剛性を確保できる拡幅・狭幅足場部材およびこの拡幅・狭幅足場部材を組み込んでなる仮設足場を提供することができる。   According to the present invention, when constructing a temporary scaffolding having different frame widths from the middle position up and down or left and right, a wide / narrow scaffold member capable of installing a leading handrail and ensuring the rigidity of the temporary scaffold and the wide / narrow scaffold A temporary scaffold formed by incorporating a width scaffold member can be provided.

くさび緊結式足場の構造の一例を示す。An example of the structure of a wedge-tight scaffold is shown. くさび緊結式足場で用いられるつなぎ材の一例の正面図である。It is a front view of an example of a connecting material used with a wedge binding type scaffold. くさび緊結式足場で用いられる方杖付つなぎ材の一例である。It is an example of a binder with a wand used in a wedge-tight scaffold. 床付き布枠の一例を示す。An example of a cloth frame with a floor is shown. 枠幅約９００ｍｍの足場に階段部材を設置した一例である。This is an example in which a staircase member is installed on a scaffold having a frame width of about 900 mm. 枠幅約１２００ｍｍの足場に階段部材を設置した一例である。This is an example in which a staircase member is installed on a scaffold having a frame width of about 1200 mm. 仮設足場の組立手順の一例である。It is an example of the assembly procedure of a temporary scaffold. 仮設足場の組立手順の他の例である。It is another example of the assembly procedure of a temporary scaffold. 一つの段の足場の垂直枠の縦枠に２箇所のジョイント部ができる一例を示す。An example is shown in which two joint portions are formed in the vertical frame of the vertical frame of a single-stage scaffold. 枠組強化のためにつなぎ材を追加した例である。This is an example in which a connecting material is added to strengthen the framework. 本発明に係る拡幅・狭幅用足場部材の一例（正面図）である。It is an example (front view) of a scaffold member for widening and narrowing according to the present invention. 図１１の拡幅・狭幅用足場部材を組み込んでなる仮設足場の一例である。It is an example of the temporary scaffold formed by incorporating the wide / narrow scaffold member in FIG. 図１１の拡幅・狭幅用足場部材を組み込んでなる仮設足場の他の例である。It is another example of the temporary scaffold formed by incorporating the widening / narrow scaffolding member of FIG. 階段部材と図１１の拡幅・狭幅用足場部材を組み込んでなる仮設足場の一例である。It is an example of the temporary scaffold formed by incorporating the staircase member and the wide / narrow scaffolding member of FIG. 本発明に係る拡幅・狭幅用足場部材の他の数例（正面図）である。It is other several examples (front view) of the scaffold member for wide / narrow width concerning the present invention.

以下、本発明の実施の形態に係る拡幅・狭幅用足場部材およびこの拡幅・狭幅足場部材を組み込んでなる仮設足場について、実施例に基づいて説明する。なお、本発明は実施例に限定されるものではない。   DESCRIPTION OF EMBODIMENTS Hereinafter, a widening / narrow scaffolding member according to an embodiment of the present invention and a temporary scaffold incorporating the widening / narrow scaffolding member will be described based on examples. In addition, this invention is not limited to an Example.

図１１は、本発明に係る拡幅・狭幅用足場部材の一例（正面図）である。   FIG. 11 is an example (front view) of a widening / narrow scaffolding member according to the present invention.

この拡幅・狭幅用足場部材は、２本の建地部材６０と、両建地部材に対して直角に設置され両建地部材間の略中央部を水平に連結する横地部材６１と、両建地部材に対して直角に設置され両建地部材間の上部近傍を水平に連結する上部水平部材６２と、両建地部材に対して直角に設置され両建地部材間の下部近傍を水平に連結する下部水平部材６５と、両建地部材に対して斜角に設置され両建地部材間を略中央部から上部近傍にかけて斜めに連結する上部斜め部材６７と、両建地部材に対して斜角に設置され両建地部材間を略中央部から下部近傍にかけて斜めに連結する下部斜め部材６８からなる。   This widening / narrowing scaffolding member includes two building members 60, a horizontal member 61 that is installed at a right angle to both building members and horizontally connects substantially the center between both building members, An upper horizontal member 62 that is installed at a right angle to the building member and connects the vicinity of the upper part between the two building members horizontally, and a lower portion that is installed at a right angle to the two building members and that is near the lower part of the building member. A lower horizontal member 65 that is connected to each other, an upper diagonal member 67 that is installed at an oblique angle with respect to both building members, and that is connected obliquely from the center to the vicinity of the upper portion between both building members, and both building members The lower inclined member 68 is installed at an oblique angle and obliquely connects between the two building members from the substantially central portion to the vicinity of the lower portion.

ここでは、２本の建地部材６０と横地部材６１とで「Ｈ形状」の垂直枠を形成しており、この拡幅・狭幅用足場部材が仮設足場に組み込まれたとき、横地部材には床付き布枠が架け渡される。   Here, the “H-shaped” vertical frame is formed by the two building members 60 and the horizontal member 61, and when this widening / narrowing scaffolding member is incorporated in the temporary scaffolding, A cloth frame with a floor is placed.

そして、この「Ｈ形状」の垂直枠の剛性を高めるために、上部水平部材６２と下部水平部材６５と上部斜め部材６７と下部斜め部材６８が設けられている。なお、この拡幅・狭幅用足場部材を組み込んで仮設足場の枠組を組み立てる際に、上部水平部材６２と上部斜め部材６７が先行手摺として機能することになる。   In order to increase the rigidity of the “H-shaped” vertical frame, an upper horizontal member 62, a lower horizontal member 65, an upper diagonal member 67, and a lower diagonal member 68 are provided. The upper horizontal member 62 and the upper oblique member 67 function as a leading handrail when assembling the temporary scaffolding frame by incorporating the widening / narrowing scaffolding member.

この建地部材６０の下端部は、ホゾ材を介して、つなぎ材と支柱部材からなる「Ｈ形状」の垂直枠のうちの支柱部材の上端部に縦方向に継ぎ足すことができるし、２本の建地部材６０と横地部材６１とからなる「Ｈ形状」の垂直枠のうちの建地材の上端部に継ぎ足すこともできる。このため、ここでは、継ぎ足した建地部材６０が抜け落ちないように、この建地部材６０の下端部には抜け止め機能ピン７０が設けられている。   The lower end portion of the building site member 60 can be vertically added to the upper end portion of the column member of the “H-shaped” vertical frame made of the connecting material and the column member via the hozo material. It can also be added to the upper end of the building material in the “H-shaped” vertical frame composed of the book building member 60 and the horizontal member 61. For this reason, the retaining function pin 70 is provided at the lower end portion of the building member 60 so that the added building member 60 does not fall off.

そして、この建地部材６０の上端部には、つなぎ材と支柱部材からなる「Ｈ形状」の垂直枠のうちの支柱部材の下端部を縦方向に継ぎ足すことができるし、２本の建地部材６０と横地部材６１とからなる「Ｈ形状」の垂直枠のうちの建地材の下端部を継ぎ足すこともできる。ここでは、建地部材６０の上端部にはホゾ材３ａが設けられており、このホゾ材を介して、支柱部材または建地部材の下端部を継ぎ足すことができる。   And the lower end part of the column member of the "H-shaped" vertical frame made of the connecting material and the column member can be added to the upper end of the building site member 60 in the vertical direction. The lower end portion of the building material in the “H-shaped” vertical frame composed of the ground member 60 and the horizontal member 61 can be added. Here, a tenon material 3a is provided at the upper end portion of the building member 60, and the lower end portion of the support member or the building member can be added via the tenon material.

この拡幅・狭幅用足場部材の建地部材の側面にはコマ４が設けられており、ここに方杖付きつなぎ材の方杖の下端部のクサビ金具を取り付け、クサビで緊結することができる。また、この拡幅・狭幅用足場部材の建地部材の側面には、上部に固定型ロック金具７１が、そして、下部に可動型ロック金具７２がそれぞれ設けられており、ブレース材や手摺の取付孔を嵌め合わせることでブレース材や手摺等を取り付けることができる。   A frame 4 is provided on the side surface of the building member of the widening / narrowing scaffolding member, and a wedge metal fitting at the lower end portion of the tie member with the wand can be attached to the frame member 4 and can be fastened with the wedge. . In addition, a fixed lock fitting 71 is provided on the upper side and a movable lock fitting 72 is provided on the lower side of the side of the building member of the widening / narrowing scaffolding member, so that a brace material or a handrail can be attached. A brace material or a handrail can be attached by fitting the holes.

図１２は、図１１の拡幅・狭幅用足場部材を組み込んでなる仮設足場の一例である。   FIG. 12 is an example of a temporary scaffold incorporating the wide / narrow scaffold member of FIG.

ここでは、図１１に示した拡幅・狭幅用足場部材を枠幅が約９００ｍｍの緊結式足場の上に組み込むことによって、第３段の足場の位置から上を枠幅約６００ｍｍへと狭幅に変更してなる仮設足場を構築しようとするものである。ここでは、左側の支柱は第１段から第４段まで同じ位置に立設されている。これに対して、右側の支柱は第１段から第３段までは左側支柱から約９００ｍｍの幅の位置に立設されるが、第３段以上では左側支柱から約６００ｍｍの幅の位置に立設される。また、各段の足場の組立の際には、先行手摺が設置できているから、作業者の安全を図ることもできる。以下に、この仮設足場を組み立てる手順について説明する。   Here, by incorporating the widening / narrowing scaffolding member shown in FIG. 11 onto a tight-type scaffolding having a frame width of about 900 mm, the width from the position of the third stage scaffolding is reduced to a frame width of about 600 mm. It is intended to construct a temporary scaffolding that is changed to Here, the left column is erected at the same position from the first stage to the fourth stage. On the other hand, the right column has a width of about 900 mm from the left column from the first stage to the third stage, but stands at a position of about 600 mm from the left column in the third and higher stages. Established. In addition, when assembling the scaffolding of each stage, since the leading handrail can be installed, it is possible to ensure the safety of the operator. The procedure for assembling this temporary scaffold will be described below.

まず、短い支柱部材の２本と約９００ｍｍの長さのつなぎ材から第１段の垂直枠が形成されており、隣接するつなぎ材（図示せず）の間に床付き布枠（図示せず）を架け渡すことによって、第１段の足場が形成される。それぞれの支柱部材の下端はジャッキベース５によって支持されている。この第１段の垂直枠を構成する短い支柱部材の上に、第２段の支柱部材３が継ぎ足され、第２段の支柱部材３の間を約９００ｍｍの長さの方杖付きつなぎ材３０で連結することによって、方杖付きつなぎ材３０と支柱部材３からなる「Ｈ形状」の第２段の垂直枠が形成され、その後、隣接する垂直枠（図示せず）との間を先行手摺２０ａで連結し、隣接する方杖付きつなぎ材（図示せず）の間に床付き布枠を架け渡すことによって、第２段の足場が形成される。   First, a first-stage vertical frame is formed from two short support members and a connecting member having a length of about 900 mm, and a cloth frame with a floor (not shown) is provided between adjacent connecting members (not shown). ) To form a first stage scaffold. The lower end of each column member is supported by the jack base 5. On the short support member constituting the first-stage vertical frame, the second-stage support member 3 is joined, and between the second-stage support members 3, a connecting member 30 with a cane having a length of about 900 mm is provided. Are connected to each other to form an “H-shaped” second-stage vertical frame made up of the tie member 30 with the cane and the support member 3, and then a leading handrail between adjacent vertical frames (not shown). A second-stage scaffolding is formed by connecting a cloth frame with a floor between adjacent connecting members with braces (not shown) connected at 20a.

次に、この第２段の垂直枠を構成する支柱部材のうち左側の支柱部材３の上に第３段の支柱部材３が継ぎ足され、そして、右側の支柱部材３の上には図１１の拡幅・狭幅用足場部材の建地部材のうち右側の建地部材６０が継ぎ足され、第３段の支柱部材３のほぼ中央部とこの拡幅・狭幅用足場部材の左側の建地部材６０のほぼ中央部との間を約６００ｍｍの長さの方杖付きつなぎ材３０で連結することによって、方杖付きつなぎ材３０と左側支柱部材３と左側建地部材６０からなる「Ｈ形状」の第３段の垂直枠と、２本の建地部材６０と横地部材６１とからなる「Ｈ形状」の垂直枠が並んで形成される。その後、隣接する垂直枠（図示せず）との間を先行手摺２０ａで連結し、「Ｈ形状」の第３段の垂直枠の方杖付きつなぎ材３０と隣接する方杖付きつなぎ材３０（図示せず）との間に床付き布枠を架け渡すとともに、２本の建地部材６０と横地部材６１とからなる「Ｈ形状」の垂直枠の横地部材６１と隣接する横地部材（図示せず）との間に床付き布枠を架け渡すことによって、第３段の足場が形成される。   Next, the third-stage column member 3 is added on the left-side column member 3 among the column-members constituting the second-stage vertical frame, and the right-side column member 3 has the structure shown in FIG. Of the building members of the widening / narrow scaffolding member, the right building member 60 is joined, and the central member of the third stage column member 3 and the building building member 60 on the left side of the widening / narrow scaffolding member. Are connected to each other by a tie member 30 with a cane having a length of about 600 mm, thereby forming an “H” shape comprising the tie member 30 with a cane, the left column member 3, and the left building member 60. A “H-shaped” vertical frame composed of a third vertical frame, two building members 60 and a horizontal member 61 is formed side by side. After that, the adjacent vertical frame (not shown) is connected with the leading handrail 20a, and the connecting member 30 with the cane of the third-stage vertical frame of the “H shape” and the adjacent connecting member 30 with the cane ( A cloth frame with a floor is bridged between it and a horizontal member (not shown) adjacent to the horizontal member 61 of the “H shape” vertical frame comprising two building members 60 and a horizontal member 61. 3), a third-stage scaffold is formed.

その後、第３段の垂直枠を構成する左側の支柱部材３の上に第４段の左側の支柱部材３が継ぎ足され、そして、拡幅・狭幅用足場部材の建地部材のうち左側の建地部材６０の上に第４段の右側の支柱部材が継ぎ足され、第４段の支柱部材の間を約６００ｍｍの長さの方杖付きつなぎ材３０で連結することによって、「Ｈ形状」の第４段の垂直枠が形成される。その後、隣接する垂直枠(図示せず)との間を先行手摺２０ａで連結し、隣接する方杖付きつなぎ材（図示せず）の間に床付き布枠を架け渡すことによって、第４段の足場が形成される。   Thereafter, the left column member 3 of the fourth stage is joined on the left column member 3 constituting the third vertical frame, and the left side of the building members of the widening / narrow scaffolding member is built. The right column member of the fourth stage is added on the ground member 60, and the “H shape” is formed by connecting the fourth stage column members with a connecting member 30 with a cane having a length of about 600 mm. A fourth vertical frame is formed. After that, the adjacent vertical frame (not shown) is connected with the leading handrail 20a, and the cloth frame with the floor is bridged between the adjacent connecting members with the cane (not shown). A scaffold is formed.

この結果、第３段の足場の位置から上を枠幅約６００ｍｍへと狭幅に変更されてなる仮設足場が構築される。このとき、各段の足場の垂直枠の縦枠にはジョイント部が１個所存在するだけであるから、足場全体の支持力を大きく低下することなく、足場全体の横揺れも抑制することができる。また、支柱部材や建地部材はその下端を下段の足場を構成する支柱部材や建地部材の上端に差し込むものであるから、上段の足場から下段の足場に荷重を伝達することができる。さらに、拡幅・狭幅用足場部材においては、２本の建地部材を斜めに連結する斜め部材が設けられているので、強固に剛接合されている。   As a result, a temporary scaffold is constructed in which the top is changed to a narrow width from the position of the third stage scaffold to a frame width of about 600 mm. At this time, since there is only one joint portion in the vertical frame of the vertical frame of each stage of the scaffold, the roll of the entire scaffold can be suppressed without greatly reducing the support force of the entire scaffold. . Further, since the lower end of the support member and the building member is inserted into the upper end of the support member and the building member constituting the lower scaffold, a load can be transmitted from the upper scaffold to the lower scaffold. Furthermore, since the widening / narrow scaffolding member is provided with an oblique member that obliquely connects the two building members, it is firmly rigidly joined.

図１３は、図１１の拡幅・狭幅用足場部材を組み込んでなる仮設足場の他の例である。   FIG. 13 is another example of a temporary scaffold incorporating the widening / narrow scaffolding member of FIG.

ここでは、図１１に示した拡幅・狭幅用足場部材を枠幅が約９００ｍｍの緊結式足場の上に組み込むことによって、第３段の足場の位置から上を枠幅約１２００ｍｍへと広幅に変更してなる仮設足場を構築しようとするものである。ここでは、左側の支柱は第１段から第４段まで同じ位置に立設されている。これに対して、右側の支柱は第１段から第３段までは左側支柱から約９００ｍｍの幅の位置に立設されるが、第３段以上では左側支柱から約１２００ｍｍの幅の位置に立設される。また、各段の足場の組立の際には、先行手摺が設置できているから、作業者の安全を図ることもできる。以下に、この仮設足場を組み立てる手順について説明する。   In this case, the widening / narrowing scaffolding member shown in FIG. 11 is incorporated on a tight-type scaffolding having a frame width of about 900 mm, so that the top of the third stage scaffolding is widened to a frame width of about 1200 mm. It is intended to build a temporary scaffolding that is changed. Here, the left column is erected at the same position from the first stage to the fourth stage. On the other hand, the right support column is erected at a position about 900 mm wide from the left support column from the first stage to the third stage, but it is about 1200 mm from the left support column at the third stage and above. Established. In addition, when assembling the scaffolding of each stage, since the leading handrail can be installed, it is possible to ensure the safety of the operator. The procedure for assembling this temporary scaffold will be described below.

まず、短い支柱部材の２本と約９００ｍｍの長さのつなぎ材から第１段の垂直枠が形成されており、隣接するつなぎ材（図示せず）の間に床付き布枠（図示せず）を架け渡すことによって、第１段の足場が形成される。それぞれの支柱部材の下端はジャッキベース５によって支持されている。この第１段の垂直枠を構成する短い支柱部材の上に、第２段の支柱部材３が継ぎ足され、第２段の支柱部材３の間を約９００ｍｍの長さの方杖付きつなぎ材３０で連結することによって、方杖付きつなぎ材３０と支柱部材３からなる「Ｈ形状」の第２段の垂直枠が形成され、その後、隣接する垂直枠（図示せず）との間を先行手摺２０ａで連結し、隣接する方杖付きつなぎ材（図示せず）の間に床付き布枠を架け渡すことによって、第２段の足場が形成される。   First, a first-stage vertical frame is formed from two short support members and a connecting member having a length of about 900 mm, and a cloth frame with a floor (not shown) is provided between adjacent connecting members (not shown). ) To form a first stage scaffold. The lower end of each column member is supported by the jack base 5. On the short support member constituting the first-stage vertical frame, the second-stage support member 3 is joined, and between the second-stage support members 3, a connecting member 30 with a cane having a length of about 900 mm is provided. Are connected to each other to form an “H-shaped” second-stage vertical frame made up of the tie member 30 with the cane and the support member 3, and then a leading handrail between adjacent vertical frames (not shown). A second-stage scaffolding is formed by connecting a cloth frame with a floor between adjacent connecting members with braces (not shown) connected at 20a.

次に、この第２段の垂直枠を構成する支柱部材のうち左側の支柱部材３の上に第３段の支柱部材３が継ぎ足され、そして、右側の支柱部材３の上には図１１の拡幅・狭幅用足場部材の建地部材のうち左側の建地部材６０が継ぎ足され、第３段の支柱部材３のほぼ中央部とこの拡幅・狭幅用足場部材の左側の建地部材６０のほぼ中央部との間を約９００ｍｍの長さの方杖付きつなぎ材３０で連結することによって、方杖付きつなぎ材３０と左側支柱部材３と左側建地部材６０からなる「Ｈ形状」の第３段の垂直枠と、２本の建地部材６０と横地部材６１とからなる「Ｈ形状」の垂直枠が並んで形成される。その後、隣接する垂直枠（図示せず）との間を先行手摺２０ａで連結し、「Ｈ形状」の第３段の垂直枠の方杖付きつなぎ材３０と隣接する方杖付きつなぎ材３０（図示せず）との間に床付き布枠を架け渡すとともに、２本の建地部材６０と横地部材６１とからなる「Ｈ形状」の垂直枠の横地部材６１と隣接する横地部材（図示せず）との間に床付き布枠を架け渡すことによって、第３段の足場が形成される。   Next, the third-stage column member 3 is added on the left-side column member 3 among the column-members constituting the second-stage vertical frame, and the right-side column member 3 has the structure shown in FIG. Of the building members of the widening / narrow scaffolding member, the left building member 60 is joined, and the central member of the third stage column member 3 and the building building member 60 on the left side of this widening / narrowing scaffolding member. Are connected to each other by a tie member 30 with a cane having a length of about 900 mm, thereby forming an “H” shape comprising the tie member 30 with a cane, the left column member 3 and the left building member 60. A “H-shaped” vertical frame composed of a third vertical frame, two building members 60 and a horizontal member 61 is formed side by side. After that, the adjacent vertical frame (not shown) is connected with the leading handrail 20a, and the connecting member 30 with the cane of the third-stage vertical frame of the “H shape” and the adjacent connecting member 30 with the cane ( A cloth frame with a floor is bridged between it and a horizontal member (not shown) adjacent to the horizontal member 61 of the “H shape” vertical frame comprising two building members 60 and a horizontal member 61. 3), a third-stage scaffold is formed.

その後、第３段の垂直枠を構成する左側の支柱部材３の上に第４段用の左側の支柱部材３が継ぎ足され、そして、拡幅・狭幅用足場部材の建地部材のうち右側の建地部材６０の上に第４段の右側の支柱部材が継ぎ足され、第４段の支柱部材の間を約１２００ｍｍの長さの方杖付きつなぎ材３０で連結することによって、「Ｈ形状」の第４段の垂直枠が形成される。その後、隣接する垂直枠（図示せず）との間を先行手摺２０ａで連結し、隣接する方杖付きつなぎ材（図示せず）の間に床付き布枠を架け渡すことによって、第４段の足場が形成される。   Thereafter, the left column member 3 for the fourth stage is added onto the left column member 3 constituting the third vertical frame, and the right side of the building members of the widening / narrow scaffolding member is added. The right column member of the fourth stage is added on the building site member 60, and the “H shape” is formed by connecting the fourth column column members with a connecting member 30 with a cane having a length of about 1200 mm. A fourth vertical frame is formed. Thereafter, the adjacent vertical frame (not shown) is connected with the leading handrail 20a, and the cloth frame with the floor is bridged between the adjacent connecting members with the cane (not shown), so that the fourth step. A scaffold is formed.

この結果、第３段の足場の位置から上を枠幅約１２００ｍｍへと広幅に変更されてなる仮設足場が構築される。このとき、各段の足場の垂直枠の縦枠にはジョイント部が１個所存在するだけであるから、足場全体の支持力を大きく低下することもなく、足場全体の横揺れも抑制することができる。また、支柱部材や建地部材はその下端を下段の足場を構成する支柱部材や建地部材の上端に差し込むものであるから、上段の足場から下段の足場に荷重を伝達することができる。さらに、拡幅・狭幅用足場部材においては、２本の建地部材を斜めに連結する斜め部材が設けられているので、強固に剛接合されている。   As a result, a temporary scaffold is constructed in which the upper part of the scaffold is changed from the position of the third stage scaffold to a wide frame width of about 1200 mm. At this time, there is only one joint portion in the vertical frame of the vertical frame of each stage of the scaffold, so that the supporting force of the entire scaffold is not greatly reduced, and the roll of the entire scaffold can be suppressed. it can. Further, since the lower end of the support member and the building member is inserted into the upper end of the support member and the building member constituting the lower scaffold, a load can be transmitted from the upper scaffold to the lower scaffold. Furthermore, since the widening / narrow scaffolding member is provided with an oblique member that obliquely connects the two building members, it is firmly rigidly joined.

以上の実施例では、拡幅・狭幅用足場部材を組み込むことによって、立面的に見て仮設足場の枠幅を中途位置から上下方向に異ならせる場合で説明してきたが、階段部材を設置する場合のように、平面的に見ても仮設足場の枠幅を中途位置から水平方向に異ならせるときにも用いることができる。   In the above-described embodiments, the case where the frame width of the temporary scaffold is changed from the midway position in the vertical direction when viewed from an elevation by incorporating the scaffold member for widening and narrowing has been described, but the staircase member is installed. As in the case, it can be used also when the frame width of the temporary scaffold is changed from the midway position in the horizontal direction even when viewed in plan.

図１４は、階段部材と図１１の拡幅・狭幅用足場部材を組み込んでなる仮設足場の一例を示す。(a)が仮設足場の平面図、(b)がＡ−Ａ矢視図、そして、(c)がＢ−Ｂ矢視図である。   FIG. 14 shows an example of a temporary scaffold in which the stair member and the wide / narrow scaffold member in FIG. 11 are incorporated. (a) is a plan view of the temporary scaffold, (b) is an AA arrow view, and (c) is a BB arrow view.

この仮設足場は壁つなぎ１５によって、建物１４の壁面につながれている。この仮設足場は、幅が約６６０ｍｍの階段部材１２が設置された足場とその近傍を除いて、枠幅が約９００ｍｍである。そして、階段部材１２が設置された足場とその近傍においては、枠幅が約１２００ｍｍであるので、階段部材が設置された足場においては作業者が通る通路の幅は約５４０ｍｍである。したがって、作業者は余裕を持って階段部材１２の脇を通ることができる。   This temporary scaffold is connected to the wall surface of the building 14 by a wall link 15. This temporary scaffold has a frame width of about 900 mm, except for the scaffold in which the step member 12 having a width of about 660 mm is installed and its vicinity. And since the frame width is about 1200 mm in the scaffold where the staircase member 12 is installed and in the vicinity thereof, the width of the passage through which the operator passes is about 540 mm in the scaffold where the staircase member is installed. Therefore, the operator can pass by the side of the stair member 12 with a margin.

この例においては、枠幅約９００ｍｍの足場の一部に、上下に複数個の階段部材１２を組み入れても作業者が余裕を持って階段部材１２の脇を通ることができるように、階段部材１２が設置された足場とその近傍の枠幅を約１２００ｍｍへと拡げてなる仮設足場を構築しようとするものである。枠幅が変更となる連結部１３に図１１に示した拡幅・狭幅用足場部材を用いる。   In this example, a staircase member is provided so that even if a plurality of staircase members 12 are incorporated in a part of a scaffold having a frame width of about 900 mm, the operator can pass along the side of the staircase member 12 with a margin. 12 is intended to construct a temporary scaffold in which the scaffold in which 12 is installed and the frame width in the vicinity thereof are expanded to about 1200 mm. The wide / narrow scaffolding member shown in FIG. 11 is used for the connecting portion 13 whose frame width is changed.

枠幅が変更となる連結部１３においては、図１４(b)にみるごとく、各段とも、左側の支柱は支柱部材３を縦方向に継ぎ足すことによって立設され、そして、右側は拡幅・狭幅用足場部材の２本の建地部材６０を縦方向に継ぎ足すことによって立設されている。言い換えれば、各段とも、左側の支柱部材３と左側建地部材６０と方杖付きつなぎ材３０からなる「Ｈ形状」の左側垂直枠（枠幅約９００ｍｍ）と、２本の建地部材６０と横地部材６１からなる「Ｈ形状」の右側垂直枠（枠幅約３００ｍｍ）が並んで形成されている。   In the connecting portion 13 whose frame width is changed, as shown in FIG. 14 (b), the left column is erected by adding the column member 3 in the vertical direction, and the right side is widened and widened. It is erected by connecting the two building members 60 of the narrow-width scaffolding member in the vertical direction. In other words, in each step, an “H-shaped” left vertical frame (frame width of about 900 mm) composed of the left column member 3, the left building member 60, and the connecting member 30 with the cane, and the two building members 60 "H-shaped" right vertical frame (frame width of about 300 mm) composed of the horizontal member 61 is formed side by side.

この連結部１３に隣接する垂直枠は、図１４(c)にみるとおりであり、各段とも、２本の支柱部材３とこれらの支柱部材３の間を約１２００ｍｍの長さの方杖付きつなぎ材３０で連結することによって、方杖付きつなぎ材３０と支柱部材３からなる「Ｈ形状」の垂直枠（枠幅約１２００ｍｍ）が形成されている。   The vertical frame adjacent to the connecting portion 13 is as shown in FIG. 14 (c), and each step is provided with two strut members 3 and a cane having a length of about 1200 mm between these strut members 3. By connecting with the connecting material 30, an “H-shaped” vertical frame (frame width of about 1200 mm) composed of the connecting material 30 with the cane and the support member 3 is formed.

そして、連結部１３の垂直枠とこれに隣接する垂直枠の間に床付き布枠９を複数枚架け渡すことによって、各段の足場が形成されるのである。ただし、連結部には左側垂直枠と右側垂直枠の間に左側建地部材６０が存在するから、それを避けて床付き布枠９を架け渡す必要があるため、床付き布枠９は、連結部の右側垂直枠の横地部材６１と隣接する垂直枠の方杖付きつなぎ材３０の間と、連結部の左側垂直枠の方杖付きつなぎ材３０と隣接する垂直枠の方杖付きつなぎ材３０の間とに、別々に架け渡される。   Then, a plurality of floor-attached cloth frames 9 are bridged between the vertical frame of the connecting portion 13 and the adjacent vertical frame, thereby forming a scaffold for each step. However, since the left side building frame member 60 exists between the left vertical frame and the right vertical frame in the connecting portion, it is necessary to bridge the floored fabric frame 9 avoiding it, Between the horizontal member 61 of the right vertical frame of the connecting portion and the connecting member 30 with the cane of the adjacent vertical frame, and between the connecting member 30 of the left vertical frame of the connecting portion and the connecting member 30 of the vertical frame adjacent to the connecting member with the cane of the vertical frame It is bridged separately between 30.

この結果、枠幅約９００ｍｍの足場の一部に、上下に複数個の階段部材１２を組み入れて、枠幅を約１２００ｍｍへと拡げてなる仮設足場が得られる。このときも、各段の足場の垂直枠の縦枠にはジョイント部が１個所存在するだけであるから、足場全体の支持力を大きく低下することなく、足場全体の横揺れも抑制することができる。また、支柱部材３や建地部材６０はその下端を下段の足場を構成する支柱部材３や建地部材６０の上端に差し込むものであるから、上段の足場から下段の足場へ荷重を伝達することができる。さらに、拡幅・狭幅用足場部材においては、２本の建地部材６０を斜めに連結する斜め部材が設けられているので、強固に剛接合されている。   As a result, a temporary scaffold can be obtained in which a plurality of step members 12 are incorporated in a part of the scaffold with a frame width of about 900 mm to expand the frame width to about 1200 mm. Also at this time, since there is only one joint portion in the vertical frame of the vertical frame of each stage scaffold, it is possible to suppress the roll of the entire scaffold without significantly reducing the supporting force of the entire scaffold. it can. Moreover, since the support | pillar member 3 and the building site member 60 insert the lower end into the upper end of the support | pillar member 3 or the building site member 60 which comprises a lower stage scaffold, it transmits a load from an upper stage scaffold to a lower stage scaffold. Can do. Further, in the widening / narrow scaffolding member, since the oblique member that obliquely connects the two building members 60 is provided, the rigid member is firmly rigidly joined.

図１５は、本発明に係る拡幅・狭幅用足場部材の他の数例（正面図）である。   FIG. 15 shows several other examples (front view) of the scaffolding member for widening and narrowing according to the present invention.

図１５(a)〜(c)は、いずれも、２本の建地部材６０と、両建地部材に対して直角に設置され両建地部材間の略中央部を水平に連結する横地部材６１から構成される「Ｈ形状」の垂直枠に加えて、両建地部材間の上部近傍を水平に連結する上部水平部材６２と、両建地部材に対して斜角に設置され両建地部材間を略中央部から上部近傍にかけて斜めに連結する上部斜め部材６７を有しているので、拡幅・狭幅用足場部材として剛性が確保されている。そして、この斜め部材６７は上部水平部材６２とともに拡幅・狭幅用足場部材に設置する先行手摺材として機能する。   FIGS. 15 (a) to 15 (c) all show two building members 60 and a horizontal member that is installed at a right angle to both building members and horizontally connects substantially the center between both building members. In addition to the "H-shaped" vertical frame composed of 61, an upper horizontal member 62 that horizontally connects the upper vicinity between both building members, and both building sites installed at an oblique angle with respect to both building members Since the upper diagonal member 67 that connects the members obliquely from approximately the center to the vicinity of the upper portion is provided, rigidity is ensured as a scaffold member for widening and narrowing. The diagonal member 67 functions as a leading handrail material installed on the widening / narrowing scaffolding member together with the upper horizontal member 62.

図１５(d)〜(e)は、いずれも、２本の建地部材６０と、両建地部材に対して直角に設置され両建地部材間の略中央部を水平に連結する横地部材６１から構成される「Ｈ形状」の垂直枠に加えて、両建地部材に対して斜角に設置され両建地部材間を略中央部から下部近傍にかけて斜めに連結する下部斜め部材６８を有しているので、拡幅・狭幅用足場部材として剛性が確保されている。そして、両建地部材の中上部近傍を水平に連結する中上部水平部材６３が設けられており、上部水平部材６２とともに先行手摺材として機能する。   15 (d) to 15 (e) all show two building members 60 and a horizontal member that is installed at a right angle to both building members and horizontally connects a substantially central portion between both building members. In addition to the “H-shaped” vertical frame composed of 61, a lower diagonal member 68 installed at an oblique angle with respect to both building members and obliquely connecting between both building members from the substantially central portion to the vicinity of the lower portion. Therefore, rigidity is secured as a scaffolding member for widening and narrowing. A middle upper horizontal member 63 that horizontally connects the vicinity of the middle upper portion of both building members is provided, and functions as a leading handrail material together with the upper horizontal member 62.

本発明によれば、中途位置から上下または左右で異なる枠幅を有する仮設足場を構築する際に、先行手摺を設置できかつ仮設足場の剛性を確保できる拡幅・狭幅足場部材およびこの拡幅・狭幅足場部材を組み込んでなる仮設足場を提供する。
According to the present invention, when constructing a temporary scaffolding having different frame widths from the middle position up and down or left and right, a wide / narrow scaffold member capable of installing a leading handrail and ensuring the rigidity of the temporary scaffold and the wide / narrow scaffold A temporary scaffold incorporating a width scaffold member is provided.

１ 支柱
２ つなぎ材
２ａ つなぎ材の端部のクサビ
２ｂ つなぎ材の端部のクサビ金具
２ｃ 追加されたつなぎ材
３ 支柱部材
３ａ ホゾ材
３ｂ ジョイント部
４ コマ
５ ジャッキベース
９ 床付き布枠
１０ 作業者
１２ 階段部材
１３ 連結部
１４ 建物
１５ 壁つなぎ
２０ 手摺
２０ａ 先行手摺
２１ ブレース材
３０ 方杖付つなぎ材
３０ａ 方杖の下端部のクサビ
３０ｂ 方杖の下端部のクサビ金具
３１ 水平管
３１ａ 水平管の端部の下部の開口部
３２ 方杖
３４ 束材
４０ 端部板
４０ａ 端部板の下向きの切り欠き部
５０ 主材
５０ａ 主材の床材部
５０ｂ 主材の布材部
５１ 掴み金具
５１ｂ 落下錠
５１ａ 湾曲部
５１ｃ リベット
５２ 梁材（側板）
６０ 建地部材
６１ 横地部材
６２ 上部水平部材
６３ 中上部水平部材
６５ 下部水平部材
６７ 上部斜め部材
６８ 下部斜め部材
７０ 抜け止め機能ピン
７１ 固定型ロック金具
７２ 可動型ロック金具
８３ エンボス加工 DESCRIPTION OF SYMBOLS 1 support | pillar 2 joining material 2a wedge of edge of joining material 2b wedge metal fitting 2c of joining material 2c added joining material 3 supporting member 3a hozo material 3b joint part 4 top 5 jack base 9 cloth frame with floor 10 worker DESCRIPTION OF SYMBOLS 12 Stair member 13 Connection part 14 Building 15 Wall connection 20 Handrail 20a Leading handrail 21 Brace material 30 Joint material with a cane 30a Wedge at the lower end of the cane 30b Wedge metal fitting at the lower end of the cane 31 Horizontal pipe 31a End of horizontal pipe Opening of the lower part 32 Cane 34 Bundle material 40 End plate 40a Notch downward of the end plate 50 Main material 50a Main material floor material 50b Main material cloth material 51 Grab metal 51b Falling lock 51a Curved part 51c Rivet 52 Beam material (side plate)
60 Building member 61 Horizontal member 62 Upper horizontal member 63 Middle upper horizontal member 65 Lower horizontal member 67 Upper diagonal member 68 Lower diagonal member 70 Retaining function pin 71 Fixed lock metal fitting 72 Moveable lock metal fitting 83 Embossing

Claims (8)

支柱部材に継ぎ足すことができる２本の建地部材と、両建地部材に対して直角に設置され両建地部材間の略中央部を水平に連結する横地部材と、両建地部材に対して直角に設置され両建地部材間の上部近傍を水平に連結する上部水平部材と、両建地部材に対して斜角に設置され両建地部材間を略中央部から上部近傍にかけて斜めに連結する上部斜め部材からなる拡幅・狭幅用足場部材。 Two building members that can be added to the strut members, a horizontal member that is installed at a right angle to both building members and that horizontally connects substantially the center between both building members, and both building members An upper horizontal member that is installed at a right angle to connect the vicinity of the upper part between the two building members horizontally, and that is installed at an oblique angle with respect to both of the building members. Scaffolding member for widening and narrowing, comprising an upper diagonal member connected to. さらに、両建地部材に対して直角に設置され両建地部材間の下部近傍を水平に連結する下部水平部材を設けてなる、請求項１に記載の拡幅・狭幅用足場部材。   The scaffolding member for widening and narrowing according to claim 1, further comprising a lower horizontal member that is installed at a right angle to both building members and that horizontally connects the vicinity of the lower portion between both building members. さらに、両建地部材に対して斜角に設置され両建地部材間を略中央部から下部近傍にかけて斜めに連結する下部斜め部材を設けてなる、請求項１または２に記載の拡幅・狭幅用足場部材。   The widening / narrowing according to claim 1 or 2, further comprising a lower oblique member that is installed at an oblique angle with respect to both building members and that obliquely connects between both building members from a substantially central portion to the vicinity of the lower portion. Scaffolding member for width. 支柱部材に継ぎ足すことができる２本の建地部材と、両建地部材に対して直角に設置され両建地部材間の略中央部を水平に連結する横地部材と、両建地部材に対して直角に設置され両建地部材間の上部近傍を水平に連結する上部水平部材と、両建地部材に対して斜角に設置され両建地部材間を略中央部から下部近傍にかけて斜めに連結する下部斜め部材と、上記横地部材と上記上部水平部材の間で両建地部材間を水平に連絡する中上部水平部材からなる拡幅・狭幅用足場部材。 Two building members that can be added to the strut members, a horizontal member that is installed at a right angle to both building members and that horizontally connects substantially the center between both building members, and both building members An upper horizontal member that is installed at a right angle to connect the vicinity of the upper part between the two building members horizontally, and that is installed at an oblique angle with respect to both of the building members. A widening / narrowing scaffolding member comprising a lower diagonal member connected to the upper part and a middle upper horizontal member that horizontally connects the two building members between the horizontal member and the upper horizontal member. さらに、両建地部材に対して直角に設置され両建地部材間の下部近傍を水平に連結する下部水平部材を設けてなる、請求項４に記載の拡幅・狭幅用足場部材。   The scaffold member for widening and narrowing according to claim 4, further comprising a lower horizontal member that is installed at a right angle to both building members and that horizontally connects the vicinity of the lower portion between both building members. 建地部材の上端部にホゾ材を組み込んでなる請求項１から５までのいずれかに記載の拡幅・狭幅用足場部材。   The scaffold member for widening and narrowing according to any one of claims 1 to 5, wherein a tenon material is incorporated into the upper end portion of the building member. 請求項１から６までのいずれかに記載の拡幅・狭幅足場部材を組み込んでなる仮設足場。   A temporary scaffold comprising the widened / narrow scaffold member according to any one of claims 1 to 6. 階段部材を組み込んでなる、請求項７に記載の仮設足場。   The temporary scaffold according to claim 7, wherein a staircase member is incorporated.

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