JP6440943B2

JP6440943B2 - Work scaffold

Info

Publication number: JP6440943B2
Application number: JP2014024235A
Authority: JP
Inventors: 健太郎根本; 淳川田; 竜也坂本; 篤史伏見谷
Original assignee: Taisei Corp
Current assignee: Taisei Corp
Priority date: 2014-02-12
Filing date: 2014-02-12
Publication date: 2018-12-19
Anticipated expiration: 2034-02-12
Also published as: JP2015151699A

Description

本発明は、作業用足場に関する。 The present invention relates to a work scaffold.

建設現場等においては、作業対象物の高さに応じて仮設の足場を設置し、当該足場を利用して各種作業を行っている。 In construction sites and the like, temporary scaffolds are installed according to the height of work objects, and various works are performed using the scaffolds.

作業対象物が小規模である場合や作業対象物の背が低いような場合には、一対の脚立に足場板を架設した程度の簡易な足場（いわゆる脚立足場）を使用することがある（例えば特許文献１参照）。例えば、盛土内に設置されるコルゲートパイプ（作業対象物）を現地で組み立てる際には、高さ０．５〜１．５ｍ程度の脚立足場をコルゲートパイプの両側に設置し、この脚立足場を利用してボルト締め等の作業を行っている。この種の足場は、可搬性を有しており、作業箇所への据え付けも容易である。 When the work object is small or the work object is short, a simple scaffold (so-called stepladder scaffold) in which a scaffold plate is erected on a pair of stepladders may be used (for example, Patent Document 1). For example, when assembling a corrugated pipe (work object) installed in the embankment on the site, install a stepladder with a height of about 0.5 to 1.5m on both sides of the corrugated pipe and use this stepladder Then, work such as bolt tightening. This type of scaffold has portability and is easy to install on the work site.

特開２００３−２４７３３８号公報JP 2003-247338 A

脚立足場の上で作業する場合には、足場に大きな転倒モーメントが作用しないように注意を払いながら作業を行っているが、足場自身の安定性を高めることができれば、安全性をより一層高めることができる。 When working on a stepladder scaffold, work is performed with care so that a large moment of falling does not act on the scaffold, but if the stability of the scaffold itself can be improved, safety will be further enhanced. Can do.

このような観点から、本発明は、高い安定性を有した作業用足場を提供することを課題とする。 From such a viewpoint, an object of the present invention is to provide a working scaffold having high stability.

本発明に係る作業用足場は、作業対象物を挟んで対向する一対の足場台と、前記作業対象物を跨ぐ繋ぎ部と、を備える作業用足場であって、前記両足場台は、前記繋ぎ部によって連結されていることを特徴とする。 The work scaffold according to the present invention is a work scaffold comprising a pair of scaffolds facing each other with a work object sandwiched therebetween, and a connecting portion straddling the work object, wherein the both scaffolding bases are the connection platform. It is connected by the part, It is characterized by the above-mentioned.

本発明によれば、一対の足場台と繋ぎ部とによって門形の構造体が形成されるようになるので、各足場台を単独で自立させる場合よりも高い安定性を確保することができる。 According to the present invention, since the gate-shaped structure is formed by the pair of scaffolding bases and the connecting portion, higher stability can be ensured than when each scaffolding base is made independent.

前記足場台としては、例えば、前記作業対象物の側方に立設される複数の支柱と、前記各支柱から張り出すブラケットと、隣り合うブラケットに架設された足場板と、前記作業対象物に当接する押え部材とを有するものを使用することができる。この場合、前記複数の支柱は、前記作業対象物に沿って一列に配置し、前記ブラケットは、前記作業対象物から離れる方向に向かって延出させるとよい。また、前記足場台としては、例えば、前記作業対象物の側方に立設される複数の支柱と、前記作業対象物に当接する押え部材とを有し、前記複数の支柱は、前記作業対象物に沿って一列に配置されているものを使用することができる。このようにすると、足場台が一側足場となるので、作業対象物の側方のスペースが狭隘な場合であっても、本発明の作業用足場を設置することが可能になる。 Examples of the scaffolding platform include a plurality of pillars erected on the side of the work object, brackets projecting from the respective pillars, a scaffold plate erected on an adjacent bracket, and the work object. A member having a pressing member that abuts can be used. In this case, the plurality of support columns may be arranged in a line along the work object, and the bracket may extend in a direction away from the work object. Moreover, as said scaffolding base, for example, it has a plurality of support columns standing on the side of the work object and a pressing member that comes into contact with the work object, and the plurality of support columns are the work object Those arranged in a line along the object can be used. In this way, since the scaffolding platform becomes a one-side scaffold, the work scaffold of the present invention can be installed even when the space on the side of the work object is narrow.

前記押え部材は、前記作業対象物に向けて進退可能であることが好ましい。このようにすると、作業対象物の側面に凹凸が存在している場合や足場台の設置位置に誤差が生じた場合であっても、押え部材の先端を作業対象物に当接させることができ、ひいては、作業用足場の安定度を高めることができる。 It is preferable that the pressing member can be advanced and retracted toward the work object. In this way, the tip of the presser member can be brought into contact with the work object even when there is unevenness on the side surface of the work object or when an error occurs in the installation position of the scaffolding base. As a result, the stability of the working scaffold can be increased.

前記繋ぎ部は、前記作業対象物を挟んで対向する一対の縦材と、一方の前記縦材から他方の前記縦材に至る横材とを有するものを使用するとよい。この場合、前記縦材は、前記足場台に立設する。門形の繋ぎ部を使用すれば、作業対象物の天端位置が足場台よりも高い場合であっても、左右の足場台同士を容易に連結することができる。 It is preferable to use a connecting member having a pair of longitudinal members facing each other with the work object interposed therebetween and a transverse member extending from one longitudinal member to the other longitudinal member. In this case, the vertical member is erected on the scaffolding. If the portal connecting portion is used, the left and right scaffolding platforms can be easily connected to each other even when the top end position of the work object is higher than the scaffolding platform.

また、長さ調節機構を具備した横材を使用すれば、足場台同士の離隔距離を容易に変更できるようになるので、一の作業用足場を様々な作業対象物に適用することが可能になる。 In addition, if a cross member equipped with a length adjustment mechanism is used, the separation distance between the scaffolds can be easily changed, so that one work scaffold can be applied to various work objects. Become.

さらに、高さ調節機構を具備した足場台を使用すれば、作業高さを容易に変更することが可能になるとともに、一の作業用足場を様々な作業対象物に適用することが可能になる。 Furthermore, if a scaffolding base equipped with a height adjustment mechanism is used, the working height can be easily changed, and one working scaffold can be applied to various work objects. .

本発明に係る作業用足場によれば、作業の安全性を高めることができる。 According to the work scaffold according to the present invention, work safety can be enhanced.

本発明の実施形態に係る作業用足場を示す斜視図である。It is a perspective view which shows the working scaffold which concerns on embodiment of this invention. 本発明の実施形態に係る作業用足場の一部を示す拡大斜視図である。It is an expansion perspective view which shows a part of working scaffold which concerns on embodiment of this invention. 支柱、ブラケットおよび押え部材の構成を示す正面図（支柱およびブラケットの一部は断面図）である。It is a front view which shows the structure of a support | pillar, a bracket, and a pressing member (a part of support | pillar and a bracket are sectional drawings). 側部防護柵および端部防護柵の構成を示す分解斜視図である。It is a disassembled perspective view which shows the structure of a side part protection fence and an end part protection fence. 押え部材の変形例を示す正面図である。It is a front view which shows the modification of a pressing member.

本発明の実施形態に係る作業用足場Ａは、図１に示すように、作業対象物Ｔを挟んで対向する一対の足場台１，１と、作業対象物Ｔを跨ぐ繋ぎ部３，３と、各足場台１の側部に設けられた側部防護柵５と、各足場台１の端部に設けられた端部防護柵７，７とを備えている。なお、本実施形態では、作業対象物Ｔが組立式のコルゲートパイプである場合を例示するが、作業対象物の種類を限定する趣旨ではない。以下の説明においては、作業対象物Ｔの長手方向（コルゲートパイプの軸方向）を前後方向とし、作業対象物Ｔの幅方向（コルゲートパイプの軸直角方向）を左右方向とする。 As shown in FIG. 1, the working scaffold A according to the embodiment of the present invention includes a pair of scaffolding stands 1 and 1 that are opposed to each other with the work target T interposed therebetween, and connecting portions 3 and 3 that straddle the work target T. The side guard fence 5 provided on the side of each scaffold base 1 and the end guard fences 7 and 7 provided at the end of each scaffold base 1 are provided. In the present embodiment, the case where the work target T is an assembly-type corrugated pipe is illustrated, but the type of the work target is not limited. In the following description, the longitudinal direction of the work target T (the axial direction of the corrugated pipe) is the front-back direction, and the width direction of the work target T (the direction perpendicular to the axis of the corrugated pipe) is the left-right direction.

左右の足場台１，１は、いずれも、前後一対の支柱１ａ，１ａと、各支柱１ａから張り出すブラケット１ｂと、ブラケット１ｂ，１ｂに架設された足場板１ｃと、作業対象物Ｔに当接する押え部材１ｄ，１ｄと、ブレース１ｅとを備えている。 Each of the left and right scaffolding platforms 1 and 1 contacts a pair of front and rear columns 1a and 1a, a bracket 1b projecting from each column 1a, a scaffolding plate 1c erected on the brackets 1b and 1b, and a work target T. The presser members 1d and 1d that are in contact with each other and a brace 1e are provided.

支柱１ａは、足場板１ｃに上載される荷重を支持するものであり、作業対象物Ｔの側方に立設されている。各足場台１の支柱１ａ，１ａは、作業対象物Ｔに沿って一列に配置されている。本実施形態の支柱１ａには、足場台１の高さを調節するための高さ調節機構が備わっている。 The column 1a supports a load placed on the scaffold plate 1c, and is erected on the side of the work target T. The pillars 1 a and 1 a of each scaffold base 1 are arranged in a line along the work target T. The strut 1a of the present embodiment is provided with a height adjusting mechanism for adjusting the height of the scaffold base 1.

なお、本実施形態では、各足場台１に二本の支柱１ａ，１ａを具備させた場合を例示したが、一つの足場台１に含まれる支柱１ａの本数を限定する趣旨ではない。図示は省略するが、一つの足場台１に三本以上の支柱１ａを具備させてもよい。また、本実施形態では、各足場台１の支柱列が一列である場合を例示したが、支柱１ａの列数を限定する趣旨ではない。図示は省略するが、各作業台１において、支柱１ａの列数を左右二列としてもよい。 In addition, in this embodiment, although the case where the two support | pillars 1a and 1a were provided in each scaffold base 1 was illustrated, it is not the meaning which limits the number of the support | pillars 1a contained in one scaffold base 1. FIG. Although illustration is omitted, one scaffold base 1 may be provided with three or more struts 1a. In the present embodiment, the case where the supporting column 1 has one column is exemplified, but the number of columns of the column 1a is not limited. Although illustration is omitted, in each work table 1, the number of columns 1a may be two columns on the left and right.

支柱１ａは、図２に示すように、ベースプレート１１と、柱脚部１２と、支柱本体１３と、縦材保持部１４，１４と、ブレース取付部１５，１５とを備えている。 As shown in FIG. 2, the column 1 a includes a base plate 11, a column base 12, a column body 13, vertical member holding units 14 and 14, and brace mounting units 15 and 15.

ベースプレート１１は、鋼板からなる。柱脚部１２は、ベースプレート１１に立設された鋼管からなる。図３に示すように、柱脚部１２には、複数の貫通孔１２ａ，１２ａ，…が形成されている。貫通孔１２ａ，１２ａ，…は、高さ方向に間隔をあけて並んでいる。 The base plate 11 is made of a steel plate. The column base portion 12 is made of a steel pipe erected on the base plate 11. As shown in FIG. 3, a plurality of through holes 12 a, 12 a,. The through holes 12a, 12a,... Are arranged at intervals in the height direction.

支柱本体１３は、柱脚部１２に被着可能な鋼管からなる。支柱本体１３は、柱脚部１２に対して上下方向にスライド可能である。支柱本体１３は、ベースプレート１１に載置されるか、あるいは、ベースプレート１１から離間した状態で配置される。 The column body 13 is made of a steel pipe that can be attached to the column base 12. The column main body 13 is slidable in the vertical direction with respect to the column base 12. The column main body 13 is placed on the base plate 11 or is separated from the base plate 11.

支柱本体１３の下端部には、少なくとも一つ（本実施形態では二つ）の貫通孔（図視略）が形成されている。この貫通孔は、柱脚部１２のいずれかの貫通孔１２ａと連通可能である。柱脚部１２の貫通孔１２ａおよび支柱本体１３の貫通孔には、柱脚部１２と支柱本体１３とを結合するためのボルト１３ａが挿入される。足場台１の高さ（支柱１ａの長さ）を調節する場合には、柱脚部１２を支柱本体１３に挿入した状態を維持しつつ支柱本体１３を上下方向にスライドさせればよい。 At least one (two in this embodiment) through-hole (not shown) is formed at the lower end of the column main body 13. This through hole can communicate with any through hole 12 a of the column base 12. Bolts 13 a for connecting the column base 12 and the column main body 13 are inserted into the through holes 12 a of the column base 12 and the through holes of the column main body 13. When adjusting the height of the scaffold base 1 (the length of the column 1a), the column body 13 may be slid in the vertical direction while maintaining the state where the column base 12 is inserted into the column body 13.

縦材保持部１４は、図２に示すように、繋ぎ部３の縦材３ａを保持するものであり、支柱本体１３の外周面に付設されている。縦材保持部１４は、支柱本体１３の上部に設けられている。 As shown in FIG. 2, the vertical member holding portion 14 holds the vertical member 3 a of the connecting portion 3, and is attached to the outer peripheral surface of the column main body 13. The vertical member holding part 14 is provided on the upper part of the column main body 13.

本実施形態の縦材保持部１４は、支柱本体１３の外周面（側面）に取り付けられた筒部１４ａと、筒部１４ａの周壁に螺着された蝶ネジ１４ｂとを備えている。筒部１４ａは、円筒状の鋼管からなり、溶接により支柱本体１３の外周面に接合されている。筒部１４ａの周壁には、図示せぬ貫通孔が形成されており、筒部１４ａの外周面には、貫通孔に連通するナット（雌ネジ）が固定されている。蝶ネジ１４ｂの軸部は、ナットに螺着されるとともに、筒部１４ａの貫通孔を通じて筒部１４ａの内部に突出している。 The vertical member holding portion 14 of the present embodiment includes a cylindrical portion 14a attached to the outer peripheral surface (side surface) of the column main body 13 and a thumbscrew 14b screwed to the peripheral wall of the cylindrical portion 14a. The cylinder part 14a consists of a cylindrical steel pipe, and is joined to the outer peripheral surface of the column main body 13 by welding. A through hole (not shown) is formed in the peripheral wall of the cylindrical portion 14a, and a nut (female screw) communicating with the through hole is fixed to the outer peripheral surface of the cylindrical portion 14a. The shaft portion of the thumbscrew 14b is screwed into the nut and protrudes into the cylindrical portion 14a through the through hole of the cylindrical portion 14a.

ブレース取付部１５は、支柱本体１３の外周面（側面）に付設されている。本実施形態のブレース取付部１５は、支柱本体１３の上端部および下端部に設けられている。ブレース取付部１５には、ブレース１ｅの端部が取り付けられる。ブレース取付部１５は、ボルトからなり、溶接により支柱本体１３の外周面に接合されている。 The brace mounting portion 15 is attached to the outer peripheral surface (side surface) of the column main body 13. The brace attaching portion 15 of the present embodiment is provided at the upper end portion and the lower end portion of the column main body 13. The brace attaching portion 15 is attached with an end portion of the brace 1e. The brace attaching part 15 consists of a volt | bolt, and is joined to the outer peripheral surface of the support | pillar main body 13 by welding.

ブラケット１ｂは、足場板１ｃを支持するものである。本実施形態のブラケット１ｂは、支柱本体１３の上端部から側方（作業対象物Ｔから離れる方向）に向かって張り出す水平材１６と、水平材１６を支持する斜材１７と、水平材１６の先端部に設けられた手摺保持部１８と、水平材１６の基端部に設けられた吊治具１９とを備えている。 The bracket 1b supports the scaffold plate 1c. The bracket 1b of the present embodiment includes a horizontal member 16 projecting from the upper end of the column main body 13 toward the side (a direction away from the work target T), a diagonal member 17 that supports the horizontal member 16, and a horizontal member 16 The handrail holding part 18 provided in the front-end | tip part and the hanging jig 19 provided in the base end part of the horizontal member 16 are provided.

水平材１６は、鋼管からなり、溶接により支柱本体１３の上端に接合されている。水平材１６には、足場板１ｃの端部が載置される。 The horizontal member 16 is made of a steel pipe and is joined to the upper end of the column main body 13 by welding. On the horizontal member 16, the end of the scaffold plate 1c is placed.

斜材１７は、水平材１６の長手方向の中間部から支柱１７に向かって斜め下方に延出している。斜材１７は、鋼管からなる。斜材１７の下端部は、溶接により支柱本体１３の外周面（側面）に接合されており、斜材１７の上端部は、溶接により水平材１６の下面に固定されている。 The diagonal member 17 extends obliquely downward from the intermediate portion in the longitudinal direction of the horizontal member 16 toward the support column 17. The diagonal member 17 is made of a steel pipe. The lower end portion of the diagonal member 17 is joined to the outer peripheral surface (side surface) of the column main body 13 by welding, and the upper end portion of the oblique member 17 is fixed to the lower surface of the horizontal member 16 by welding.

手摺保持部１８は、水平材１６の上面に立設された筒部１８ａと、筒部１８ａの周壁に螺着された蝶ネジ１８ｂ，１８ｂとを備えている。筒部１８ａは、円筒状の鋼管からなり、溶接により水平材１６の上面に接合されている。筒部１８ａの周壁には、図示せぬ貫通孔が形成されており、筒部１８ａの外周面には、図３に示すように、貫通孔に連通するナット１８ｃが固定されている。蝶ネジ１８ｂの軸部は、ナット１８ｃに螺着されるとともに、筒部１８ａの貫通孔を通じて筒部１８ａの内部に突出している。 The handrail holding portion 18 includes a cylindrical portion 18a erected on the upper surface of the horizontal member 16, and thumb screws 18b and 18b screwed to the peripheral wall of the cylindrical portion 18a. The cylinder part 18a consists of a cylindrical steel pipe, and is joined to the upper surface of the horizontal member 16 by welding. A through hole (not shown) is formed in the peripheral wall of the cylindrical portion 18a, and a nut 18c communicating with the through hole is fixed to the outer peripheral surface of the cylindrical portion 18a as shown in FIG. The shaft portion of the thumbscrew 18b is screwed to the nut 18c and protrudes into the cylindrical portion 18a through the through hole of the cylindrical portion 18a.

吊治具１９は、クレーン等のフックに係止される部位であり、水平材１６の上面に立設された高ナット１９ａと、高ナット１９ａに螺着されたアイボルト１９ｂとを備えている。 The hanging jig 19 is a part that is locked to a hook such as a crane, and includes a high nut 19a that is erected on the upper surface of the horizontal member 16, and an eye bolt 19b that is screwed to the high nut 19a.

図１に示す足場板１ｃは、作業床となるものであり、鋼製又はアルミニウム合金製の板材の端部に係止フックを具備した汎用品からなる。なお、図示は省略するが、係止フックを具備していない足場板を使用してもよい。 The scaffold board 1c shown in FIG. 1 serves as a work floor, and consists of a general-purpose product having a locking hook at the end of a steel or aluminum alloy plate. In addition, although illustration is abbreviate | omitted, you may use the scaffold board which is not equipped with the latching hook.

押え部材１ｄは、ブラケット１ｂに装着されていて、作業対象物Ｔに向けて進退可能である。本実施形態の押え部材１ｄは、図３に示すように、ブラケット１ｂの水平材１６に挿入される挿入軸部２０と、挿入軸部２０の先端部に固定されたナット２１と、ナット２１に螺着されたネジ棒２２と、ネジ棒２２に装着された後退防止部２３と、ネジ棒２２の先端に装着された当接部２４とを備えている。 The pressing member 1d is attached to the bracket 1b and can be advanced and retracted toward the work target T. As shown in FIG. 3, the pressing member 1 d of the present embodiment includes an insertion shaft portion 20 that is inserted into the horizontal member 16 of the bracket 1 b, a nut 21 that is fixed to the distal end portion of the insertion shaft portion 20, and a nut 21. A screw rod 22 that is screwed, a retreat prevention portion 23 attached to the screw rod 22, and a contact portion 24 attached to the tip of the screw rod 22 are provided.

挿入軸部２０は、水平材１６に挿入可能な棒状部材からなる。本実施形態の挿入軸部２０は、水平材１６の内径よりも小さな外径を具備した鋼管からなる。 The insertion shaft portion 20 is made of a rod-like member that can be inserted into the horizontal member 16. The insertion shaft portion 20 of the present embodiment is made of a steel pipe having an outer diameter smaller than the inner diameter of the horizontal member 16.

後退防止部２３は、押え部材１ｄの後退（作業対象物Ｔから離れる方向への移動）を防止するものであり、水平材１６の端面に当接している。本実施形態の後退防止部２３は、ネジ棒２２に螺着されたナットと、このナットに固定されたワッシャとを備えている。 The retreat prevention unit 23 prevents the retraction member 1d from retreating (moving in a direction away from the work target T) and is in contact with the end surface of the horizontal member 16. The retreat prevention part 23 of this embodiment includes a nut screwed to the screw rod 22 and a washer fixed to the nut.

当接部２４は、作業対象物Ｔに当接する受板２４ａと、受板２４ａに固定されたナット２４ｂとを備えている。ナット２４ｂは、ネジ棒２２の先端に螺着されている。 The contact portion 24 includes a receiving plate 24a that contacts the work target T and a nut 24b fixed to the receiving plate 24a. The nut 24 b is screwed to the tip of the screw rod 22.

図１に示すブレース１ｅは、一対の支柱１ａ，１ａを平行状態に保持するために配置されるものであり、Ｘ字状に組み合わせた一対の棒材からなる。各棒材の端部は、支柱１ａのブレース取付部１５（図２参照）に取り付けられる。 A brace 1e shown in FIG. 1 is arranged to hold a pair of support pillars 1a and 1a in a parallel state, and is composed of a pair of bar members combined in an X shape. The end of each bar is attached to the brace attachment 15 (see FIG. 2) of the support 1a.

繋ぎ部３は、作業対象物Ｔを挟んで対向する一対の縦材３ａ，３ａと、一方の縦材３ａから他方の縦材３ａに至る横材３ｂとを備えている。 The connecting portion 3 includes a pair of vertical members 3a and 3a facing each other with the work target T interposed therebetween, and a horizontal member 3b extending from one vertical member 3a to the other vertical member 3a.

縦材３ａは、足場台１に立設される棒状部材であり、図２に示すように、縦材保持部１４，１４に保持されている。本実施形態の縦材３ａは、縦材保持部１４の筒部１４ａに挿入可能な鋼管からなり、縦材３ａの外周面に押し付けた蝶ネジ１４ｂによって筒部１４ａの内周面に固定される。 The vertical member 3a is a rod-like member standing on the scaffold 1 and is held by the vertical member holding portions 14 and 14, as shown in FIG. The vertical member 3a of the present embodiment is made of a steel pipe that can be inserted into the cylindrical portion 14a of the vertical member holding portion 14, and is fixed to the inner peripheral surface of the cylindrical portion 14a by a thumbscrew 14b pressed against the outer peripheral surface of the vertical member 3a. .

横材３ｂは、長さ調節機構を備えている。本実施形態の横材３ｂでは、棒状の小径部３１と、小径部３１に被着可能なパイプ状の大径部３２とによって、長さ調節機構が構成されている。横材３ｂの長さを調節する場合には、小径部３１の大径部３２への挿入長さを増減すればよい。 The cross member 3b includes a length adjusting mechanism. In the cross member 3b of the present embodiment, a length adjusting mechanism is configured by the rod-shaped small-diameter portion 31 and the pipe-shaped large-diameter portion 32 that can be attached to the small-diameter portion 31. When adjusting the length of the cross member 3b, the insertion length of the small diameter portion 31 into the large diameter portion 32 may be increased or decreased.

小径部３１は、縦材３ａに片持ち支持された鋼管からなる。小径部３１の基端部は、溶接により縦材３ａの上端部に接合されており、小径部３１の先端部は、大径部３２に挿入されている。小径部３１は、作業対象物Ｔを挟んで対向する縦材３ａ,３ａ（図２では一方の縦材３ａのみを図示している）のそれぞれに設けられていて、一方の縦材３ａから他方の縦材３ａに向かって水平に延出している。小径部３１には、複数の貫通孔３１ａ，３１ａ，…が形成されている。貫通孔３１ａ，３１ａ，…は、横材３ｂの長手方向に間隔をあけて並んでいる。 The small diameter portion 31 is made of a steel pipe that is cantilevered by the vertical member 3a. The proximal end portion of the small diameter portion 31 is joined to the upper end portion of the longitudinal member 3 a by welding, and the distal end portion of the small diameter portion 31 is inserted into the large diameter portion 32. The small-diameter portion 31 is provided on each of the vertical members 3a, 3a (only one vertical member 3a is shown in FIG. 2) facing each other with the work target T interposed therebetween. It extends horizontally toward the vertical member 3a. In the small diameter portion 31, a plurality of through holes 31a, 31a,... Are formed. The through holes 31a, 31a,... Are arranged at intervals in the longitudinal direction of the cross member 3b.

大径部３２は、左右の小径部３１，３１（図２では一方の小径部３１のみを図示している）に架設された鋼管からなる。大径部３２の両端部には、それぞれ少なくとも一つ（本実施形態では二つ）の貫通孔（図示略）が形成されている。小径部３１の貫通孔３１ａおよび大径部３２の貫通孔には、小径部３１と大径部３２とを結合するためのボルト３３が挿入される。 The large-diameter portion 32 is made of a steel pipe installed on the left and right small-diameter portions 31 and 31 (only one small-diameter portion 31 is shown in FIG. 2). At least one (two in this embodiment) through-holes (not shown) are formed at both ends of the large-diameter portion 32. Bolts 33 for connecting the small diameter part 31 and the large diameter part 32 are inserted into the through hole 31 a of the small diameter part 31 and the through hole of the large diameter part 32.

側部防護柵５は、図１に示すように、ブラケット１ｂ，１ｂに支持されている。本実施形態の側部防護柵５は、ブラケット１ｂに立設された手摺支柱５ａ，５ａと、手摺支柱５ａ，５ａの間に配置された上下二段の横架材５ｂ，５ｂとを備えている。図４に示すように、各手摺支柱５ａの上部には、手摺支柱５ａを挟んで対向する二つの第一保持筒５ｃ，５ｃと、各第一保持筒５ｃから手摺支柱５ａの中心軸周りに９０度離れた位置に配置された第二保持筒５ｄとが付設されている。同様に、各手摺支柱５ａの高さ方向の中間部には、二つの第一保持筒５ｃ，５ｃと、一つの第二保持筒５ｄとが付設されている。 As shown in FIG. 1, the side protection fence 5 is supported by brackets 1b and 1b. The side protection fence 5 of the present embodiment includes handrail support columns 5a and 5a erected on the bracket 1b, and two upper and lower horizontal members 5b and 5b disposed between the handrail support columns 5a and 5a. Yes. As shown in FIG. 4, at the upper part of each handrail support column 5a, there are two first holding cylinders 5c, 5c facing each other with the handrail support column 5a interposed therebetween, and from each first holding cylinder 5c around the central axis of the handrail support column 5a. A second holding cylinder 5d arranged at a position 90 degrees apart is attached. Similarly, two first holding cylinders 5c and 5c and one second holding cylinder 5d are attached to an intermediate portion in the height direction of each handrail column 5a.

手摺支柱５ａは、図２に示すように、ブラケット１ｂの手摺保持部１８に保持されている。本実施形態の手摺支柱５ａは、手摺保持部１８の筒部１８ａに挿入可能な鋼管からなり、手摺支柱５ａの外周面に押し付けた蝶ネジ１８ｂによって筒部１８ａの内周面に固定されている。 As shown in FIG. 2, the handrail support column 5a is held by the handrail holding portion 18 of the bracket 1b. The handrail support column 5a of the present embodiment is made of a steel pipe that can be inserted into the tube portion 18a of the handrail support portion 18, and is fixed to the inner peripheral surface of the tube portion 18a by a thumbscrew 18b pressed against the outer peripheral surface of the handrail support column 5a. .

横架材５ｂは、鋼材からなる。図４に示すように、横架材５ｂの両端部は、下方に向けて折り曲げられていて、第一保持筒５ｃまたは第二保持筒５ｃに挿入される。 The horizontal member 5b is made of steel. As shown in FIG. 4, both ends of the horizontal member 5b are bent downward and inserted into the first holding cylinder 5c or the second holding cylinder 5c.

第一保持筒５ｃおよび第二保持筒５ｄは、いずれも円筒状の鋼管からなり、溶接により手摺支柱５ａの外周面に接合されている。 Both the first holding cylinder 5c and the second holding cylinder 5d are made of a cylindrical steel pipe, and are joined to the outer peripheral surface of the handrail support column 5a by welding.

なお、図中の手前側（図１の昇降ステップＳ側）の手摺支柱５ａでは、第一保持筒５ｃ，５ｃを手摺支柱５ａの左右に位置させている。また、奥側の手摺支柱５ａでは、第一保持筒５ｃ，５ｃを手摺支柱５ａの前後に位置させるとともに、手摺支柱５ａを挟んで作業対象物Ｔの反対側に第二保持筒５ｄを位置させている。 In the handrail column 5a on the near side in the figure (the lifting step S side in FIG. 1), the first holding cylinders 5c and 5c are positioned on the left and right of the handrail column 5a. Further, in the rear handrail support column 5a, the first holding cylinders 5c and 5c are positioned in front of and behind the handrail support column 5a, and the second holding cylinder 5d is positioned on the opposite side of the work target T across the handrail support column 5a. ing.

端部防護柵７は、図１に示すように、手摺支柱５ａに片持ち支持されている。昇降ステップＳ側の端部防護柵７は、手摺支柱５ａに平行な回転軸を中心に回転可能（開閉可能）であり、奥側の端部防護柵７は、回転不能（開閉不能）である。 As shown in FIG. 1, the end guard fence 7 is cantilevered by the handrail support column 5a. The end guard fence 7 on the ascending / descending step S side is rotatable (openable and closable) around a rotation axis parallel to the handrail support column 5a, and the rear end guard fence 7 is not rotatable (cannot be opened and closed). .

本実施形態の端部防護柵７は、図４に示すように、枠体７ａと、枠体７ａの端部に設けられた上下一対の係止部７ｂ，７ｂとを備えている。 As shown in FIG. 4, the end guard fence 7 of the present embodiment includes a frame body 7 a and a pair of upper and lower locking portions 7 b and 7 b provided at the end of the frame body 7 a.

枠体７ａは、コ字状を呈する外枠フレーム７１と、外枠フレーム７１の上下の横材同士を繋ぐ中間材７２とを備えている。 The frame body 7a includes an outer frame frame 71 having a U-shape and an intermediate member 72 that connects the upper and lower horizontal members of the outer frame frame 71 to each other.

係止部７ｂは、側部防護柵５に係止される部位である。上側の係止部７ｂは、外枠フレーム７１の上側の横材の端部に固定されており、下側の係止部７ｂは、外枠フレーム７１の下側の横材の端部に固定されている。本実施形態の係止部７ｂは、第一保持筒５ｃに挿入可能な鋼棒からなる。図中の手前側（図１の昇降ステップＳ側）の端部防護柵７における各係止部７ｂは、一つの第一保持筒５ｃに挿入される一つの軸部を有している。手前側の端部防護柵７においては、各係止部７ｂの軸部を一つの第一保持筒５ｃに係止することで、枠体７ｂが係止部７ｂの軸部を中心にして回転可能となる。奥側の端部防護柵７における係止部７ｂは、二つの第一保持筒５ｃ，５ｃに挿入される一対の軸部を有している。奥側の端部防護柵７においては、各係止部７ｂの二つの軸部を二つの第一保持筒５ｃ，５ｃに挿入することで、枠体７ｂが回転不能となる。 The locking portion 7 b is a portion that is locked to the side protection fence 5. The upper locking portion 7b is fixed to the end of the upper cross member of the outer frame frame 71, and the lower locking portion 7b is fixed to the end of the lower cross member of the outer frame frame 71. Has been. The locking portion 7b of the present embodiment is made of a steel bar that can be inserted into the first holding cylinder 5c. Each locking portion 7b in the end guard fence 7 on the near side (the lifting step S side in FIG. 1) in the figure has one shaft portion inserted into one first holding cylinder 5c. In the end side guard fence 7 on the near side, the frame body 7b rotates around the shaft portion of the locking portion 7b by locking the shaft portion of each locking portion 7b to one first holding cylinder 5c. It becomes possible. The locking portion 7b in the end guard fence 7 on the back side has a pair of shaft portions that are inserted into the two first holding cylinders 5c and 5c. In the end side guard fence 7 on the back side, the frame body 7b becomes non-rotatable by inserting the two shaft portions of each locking portion 7b into the two first holding cylinders 5c, 5c.

図１の作業用足場Ａを構築する場合には、まず、作業対象物Ｔを挟んで両側に足場台１，１を設置し、作業高さに応じて支柱１ａの高さを適宜調節する。次に、足場台１，１の離隔距離に応じて横材３ｂの長さを適宜調節しつつ、作業対象物Ｔを跨ぐように繋ぎ部３，３を配置し、繋ぎ部３，３で足場台１，１を連結する。押え部材１ｄは、作業対象物Ｔの既設部分に当接させる。なお、押え部材１ｄと作業対象物Ｔとが離れている場合には、押え部材１ｄを水平材１６から引き出して当接部２４を作業対象物Ｔに当接させた後、後退防止部２３を水平材１６に向けて移動させ、後退防止部材２３を水平材１６の端面に当接させればよい。また、各足場台１には、側部防護柵５、端部防護柵７、昇降ステップＳ等を設置する。 When constructing the work scaffold A of FIG. 1, first, the scaffolding bases 1 and 1 are installed on both sides of the work target T, and the height of the column 1a is adjusted as appropriate according to the work height. Next, the connecting portions 3 and 3 are arranged so as to straddle the work target T while appropriately adjusting the length of the cross member 3b according to the separation distance of the scaffolding platforms 1 and 1, and the scaffolding portions 3 and 3 are used as the scaffolding. The bases 1 and 1 are connected. The pressing member 1d is brought into contact with the existing part of the work target T. When the presser member 1d and the work target T are separated from each other, after the presser member 1d is pulled out from the horizontal member 16 and the contact portion 24 is brought into contact with the work target T, the retraction preventing portion 23 is moved. What is necessary is just to make it move toward the horizontal member 16, and to make the retreat prevention member 23 contact the end surface of the horizontal member 16. Each scaffold base 1 is provided with a side protection fence 5, an end protection fence 7, a lifting step S, and the like.

作業用足場Ａを移動させる場合には、例えば、図示せぬクレーンのワイヤーロープを吊治具１９（図２参照）に掛止し、押え部材１ｄを退行させた後、作業用足場Ａを吊り上げればよい。押え部材１ｄを退行させる場合には、後退防止部材２３を当接部２４側に移動させた後、押え部材１ｄを水平材１６に押し込めばよい。なお、図示は省略するが、車輪やローラ等の移動手段を支柱１ａの下端部に取り付けておけば、作業用足場Ａを人力で移動させることも可能である。 When the work scaffold A is moved, for example, a wire rope of a crane (not shown) is hooked on the lifting jig 19 (see FIG. 2), the presser member 1d is retracted, and then the work scaffold A is lifted. Just do it. When the presser member 1d is retracted, the presser member 1d may be pushed into the horizontal member 16 after the retreat prevention member 23 is moved to the contact portion 24 side. In addition, although illustration is abbreviate | omitted, if the moving means, such as a wheel and a roller, are attached to the lower end part of the support | pillar 1a, it is also possible to move the working scaffold A manually.

本実施形態に係る作業用足場Ａによれば、一対の足場台１，１と繋ぎ部３，３とによって門形の構造体が形成されるようになるので、各足場台１を単独で自立させる場合よりも高い安定性を確保することができる。 According to the working scaffold A according to the present embodiment, a gate-shaped structure is formed by the pair of scaffolding bases 1 and 1 and the connecting portions 3 and 3, so that each scaffolding base 1 is independent independently. It is possible to ensure higher stability than in the case of making it.

また、各足場台１は一側足場であるので、作業対象物Ｔの側方のスペースが狭隘な場合であっても、作業用足場Ａを設置することが可能になる。 Further, since each scaffold base 1 is a one-side scaffold, the work scaffold A can be installed even when the space on the side of the work target T is narrow.

作業用足場Ａでは、足場台１の上端位置が作業対象物Ｔの天端よりも低い位置にあるものの、繋ぎ部３が門形を呈しているので、一対の足場台１，１を容易に連結することができる。 In the working scaffold A, although the upper end position of the scaffold base 1 is lower than the top end of the work target T, since the connecting portion 3 has a gate shape, the pair of scaffold bases 1 and 1 can be easily formed. Can be linked.

また、足場台１が高さ調節機構を具備しており、さらに繋ぎ部３の横材３ｂが長さ調節機構を具備しているので、一つの作業用足場Ａを様々な寸法・形状の作業対象物Ｔに適用することができる。また、作業用足場Ａでは、支柱１ａの高さを支柱１ａごとに調節できるので、作業用足場Ａの設置面に不陸が存在する場合であっても、容易に対応することができる。 In addition, since the scaffold base 1 has a height adjusting mechanism, and the cross member 3b of the connecting portion 3 has a length adjusting mechanism, one working scaffold A can be operated in various sizes and shapes. It can be applied to the object T. Further, in the working scaffold A, the height of the support 1a can be adjusted for each support 1a, so that even if there is unevenness on the installation surface of the work scaffold A, it is possible to easily cope with it.

さらに、押え部材１ｄを作業対象物Ｔに向けて進退可能な構成としたので、作業対象物Ｔの側面に凹凸が存在している場合であっても、押え部材１ｄの先端を作業対象物Ｔに当接させることができ、ひいては、作業用足場Ａの安定度を高めることが可能になる。 Furthermore, since the pressing member 1d is configured to be able to advance and retreat toward the work target T, even when the side surface of the work target T has irregularities, the tip of the pressing member 1d is moved to the work target T. Thus, the stability of the working scaffold A can be increased.

作業用足場Ａの構成は適宜変更することができる。
例えば、本実施形態では、支柱１ａの上端位置を足場板１ｃの高さ位置とした場合を例示したが、支柱１ａを足場板１ｃの上方まで延在させてもよい。この場合には、横材３ｂのみからなる繋ぎ部３で左右の支柱１ａ，１ａを連結してもよい。 The configuration of the working scaffold A can be changed as appropriate.
For example, in this embodiment, although the case where the upper end position of the support | pillar 1a was made into the height position of the scaffold board 1c was illustrated, you may extend the support | pillar 1a above the scaffold board 1c. In this case, the left and right struts 1a and 1a may be connected by the connecting portion 3 made only of the cross member 3b.

また、図３の押え部材１ｄに代えて、図５に示す押え部材１ｆを使用してもよい。押え部材１ｆも、ブラケット１ｂの水平材１６に装着されていて、作業対象物Ｔ（図１参照）に向けて進退可能である。具体的に説明すると、押え部材１ｆは、水平材１６の一端部（作業対象物Ｔから遠い側の端部）に固定された基部２５と、ブラケット１ｂの水平材１６に挿入される第一ネジ棒２６と、第一ネジ棒２６に連結された張出部２７と、張出部２７に連結された第二ネジ棒２８と、第二ネジ棒２８の先端に装着された当接部２９とを備えている。 Further, instead of the pressing member 1d shown in FIG. 3, a pressing member 1f shown in FIG. 5 may be used. The pressing member 1f is also mounted on the horizontal member 16 of the bracket 1b, and can be advanced and retracted toward the work target T (see FIG. 1). More specifically, the holding member 1f includes a base 25 fixed to one end of the horizontal member 16 (an end far from the work target T) and a first screw inserted into the horizontal member 16 of the bracket 1b. A rod 26, an overhang portion 27 connected to the first screw rod 26, a second screw rod 28 connected to the overhang portion 27, and a contact portion 29 attached to the tip of the second screw rod 28 It has.

第一ネジ棒２６は、基部２５の雌ネジ（ナット）に螺着されている。張出部２７は、鋼管からなる棒材２７ａと、棒材２７ａの基端に接合された第一ナット２７ｂと、棒材２７ａの先端側の内部に固定された第二ナット２７ｃとを備えている。棒材２７ａの少なくとも一部は、水平材１６に挿入されている。第一ナット２７ｂには、第一ネジ棒２６の先端が螺着され、第二ナット２７ｃには、第二ネジ棒２８が螺着されている。 The first screw rod 26 is screwed onto a female screw (nut) of the base portion 25. The overhang portion 27 includes a rod 27a made of a steel pipe, a first nut 27b joined to the base end of the rod 27a, and a second nut 27c fixed to the inside of the distal end side of the rod 27a. Yes. At least a part of the bar 27 a is inserted into the horizontal member 16. The tip of the first screw rod 26 is screwed to the first nut 27b, and the second screw rod 28 is screwed to the second nut 27c.

当接部２９は、作業対象物Ｔに当接する受板２９ａと、受板２９ａに固定されたナット２９ｂとを備えている。ナット２９ｂは、第二ネジ棒２８の先端に螺着されている。 The contact portion 29 includes a receiving plate 29a that contacts the work target T, and a nut 29b fixed to the receiving plate 29a. The nut 29 b is screwed to the tip of the second screw rod 28.

押え部材１ｆでは、張出部２７を介して第一ネジ棒２６を軸回りに回転させることで、張出部２７の張出量を調節する。また、当接部２９を回転させると、当接部２９の位置を微調整することができる。 In the pressing member 1 f, the amount of overhang of the overhang portion 27 is adjusted by rotating the first screw rod 26 about the axis via the overhang portion 27. Further, when the contact portion 29 is rotated, the position of the contact portion 29 can be finely adjusted.

本実施形態では、前後二つの繋ぎ部３，３で足場台１，１を連結した場合を例示したが、繋ぎ部３の数を変更してもよい。図示は省略するが、一つの繋ぎ部３で足場台１，１を連結してもよいし、三つ以上の繋ぎ部３で足場台１，１を連結してもよい。 In this embodiment, although the case where the scaffolding bases 1 and 1 were connected by two connecting parts 3 and 3 before and after was illustrated, you may change the number of the connecting parts 3. Although illustration is omitted, the scaffolding bases 1 and 1 may be connected by one connecting part 3, or the scaffolding bases 1 and 1 may be connected by three or more connecting parts 3.

Ａ作業用足場
１足場台
１ａ支柱
１ｂブラケット
１ｃ足場板
１ｄ押え部材
１ｅブレース
３繋ぎ部
３ａ縦材
３ｂ横材
５後部防護柵
７端部防護柵
Ｔ作業対象物 A Work Scaffolding 1 Scaffolding Base 1a Post 1b Bracket 1c Scaffolding Plate 1d Pressing Member 1e Brace 3 Connecting Part 3a Vertical Material 3b Lateral Material 5 Rear Guard Fence 7 End Guard Fence T Work Object

Claims

A pair of scaffolds facing each other across the work object;
A working scaffold comprising a connecting portion straddling the work object,
The scaffolds are connected by the connecting portion ,
At least one of the scaffolding bases has a plurality of columns that are erected on the side of the work object, and a pressing member that comes into contact with the work object,
The work scaffolding, wherein the plurality of support columns are arranged in a line along the work object.

A pair of scaffolds facing each other across the work object;
A working scaffold comprising a connecting portion straddling the work object,
The scaffolds are connected by the connecting portion,
At least one of the scaffolding bases includes a plurality of pillars erected on the side of the work object, brackets projecting from the pillars, a scaffold plate erected on an adjacent bracket, and the work object. A holding member that abuts,
The plurality of struts are arranged in a line along the work object,
The bracket, characterized in that it extends in a direction away from said work object work scaffolds.

The work scaffold according to claim 1 , wherein the pressing member is capable of moving forward and backward toward the work object.

The connecting portion includes a pair of longitudinal members facing each other with the work object interposed therebetween, and a transverse member extending from one longitudinal member to the other longitudinal member,
The vertical member is erected on the scaffolding platform,
The work scaffold according to any one of claims 1 to 3, wherein the cross member has a length adjusting mechanism.

Each said scaffold base has a height adjustment mechanism, The work scaffold as described in any one of Claim 1 thru | or 4 characterized by the above-mentioned.