JP3899330B2 - Safety handrail - Google Patents

Safety handrail Download PDF

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Publication number
JP3899330B2
JP3899330B2 JP2003119833A JP2003119833A JP3899330B2 JP 3899330 B2 JP3899330 B2 JP 3899330B2 JP 2003119833 A JP2003119833 A JP 2003119833A JP 2003119833 A JP2003119833 A JP 2003119833A JP 3899330 B2 JP3899330 B2 JP 3899330B2
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Prior art keywords
handrail
safety handrail
scaffolding
attached
support
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JP2004324210A (en
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朋幸 夛田
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Alinco Inc
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Alinco Inc
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/14—Railings
    • E04G5/147—Railings specially adapted for mounting prior to the mounting of the platform

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Steps, Ramps, And Handrails (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、建設作業現場において、上下方向に継ぎ足してなる支柱を複数並設すると共に、隣り合う支柱間に足場板を上下複数段に架け渡して組み立てる単管足場の組立にあたり、既設の下段側足場板から、新設した上段側足場板の先行仮設手摺りとして取り付ける安全手摺に関するものである。
【０００２】
【従来の技術】
従来の安全手摺は、公知文献を具体的に上げることは出来ないが、両側一対の竪杆と上下の横杆とで形成される周枠に複数の中桟を配設して矩形枠体状に構成したもので、この矩形枠体状手摺を、既設の下段側足場板から、新設した上段側足場板に持ち上げることによって、隣り合う両支柱に取り付けるようになっている。
【０００３】
【発明が解決しようとする課題】
上記のような安全手摺では、矩形枠体状であるため作業員が持ち難く、既設の下段足場板上での搬送が面倒であり、また矩形枠体状であるため既設の下段足場板上で作業員が万歳をするような恰好で安全手摺を持ち上げて、新設した上段側足場板での取付作業を行わねばならず、従って安全手摺の取付作業が非常に面倒で、非常な時間と手間がかかっていた。
【０００４】
本発明は、既設の下段足場板上での搬送が容易で、取付作業が短時間で簡単に行える安全手摺を提供することを目的とする。
【０００５】
【課題を解決するための手段】
請求項１に係る発明の安全手摺は、上下方向に継ぎ足してなる支柱２を複数並設すると共に、隣り合う支柱２，２間に足場板３を上下複数段に架け渡して組み立てる単管足場４の組立にあたり、既設の下段側足場板３から、新設した上段側足場板３の仮設手摺として取り付ける安全手摺１であって、足場板３長手方向に隣り合う支柱２，２に添うように取り付けられる両側一対の竪杆５，５と、両端部が両竪杆５，５の上端部側に枢着されて、両竪杆５，５間で中折式に折り畳み自在な手摺本体６とからなり、各竪杆５は、その下端部側を支柱２に着脱自在に取り付けるようになっていることを特徴とする。
【０００６】
請求項２は、請求項１に記載の安全手摺において、手摺本体６は、上段側一対の横材１０，１０の一端部同士と中縦材１１の上端部とを枢支連結し、下段側一対の横材１０，１０の一端部同士と中縦材１１の下端部とを枢支連結すると共に、各横材１０の他端部を竪杆５に夫々枢着することによって形成されることを特徴とする。
【０００７】
請求項３は、請求項１又は２に記載の安全手摺において、各竪杆５の下端部側には上方部位に取付金具１７を、下方部位に支持金具１８を夫々設け、取付金具１７は、単管足場４の竪杆５に設けられたフランジ部材７の係合孔８に上方から挿入される下向きの楔片１７ｂを有し、支持金具１８は、支柱２の外周面に係合可能な凹面状の係合部材１８ｂを有することを特徴とする。
【０００８】
【発明の実施の形態】
図１は本発明に係る安全手摺１を示す正面図、図２は同安全手摺１の平面図、図３は同安全手摺１の折り畳み状態を示す正面図、図４は同折り畳み状態の平面図、図５の（ａ）は同安全手摺の竪杆に設けてある取付金具及び支持金具を示す斜視図、（ｂ）はその側面図である。図６の▲１▼〜▲３▼は安全手摺の取付方法を説明する説明図である。この安全手摺１は、図１の仮想線で示すように、上下方向に継ぎ足してなる支柱２を複数並設すると共に、縦方向（足場板３の長手方向）に隣り合う支柱２，２間に足場板３を上下複数段に架け渡して組み立てる単管足場４の組立にあたり、図６のように既設の下段側足場板３（実線図示）から、新設した上段側足場板３（仮想線図示）の先行仮設手摺りとして取り付けるようにしたもので、隣り合う支柱２，２に添うように取り付けられる両側一対の竪杆５，５と、両端部が両竪杆５，５の上端部側に枢着されて、中折式に折り畳み自在な手摺本体６とからなり、各竪杆５は、その下端部側を竪杆５に着脱自在に取り付けるようになっている。
【０００９】
各支柱２にはその長手方向所要間隔おきにフランジ部材７が固着されていて、各フランジ部材７には係合孔８が９０度間隔で４つ開口形成されている。足場板３の両端部は、単管足場４の横方向に隣り合う支柱２，２のフランジ部材７，７に連結された横ステー９，９にフック２３で掛止される。
【００１０】
安全手摺１の手摺本体６は、図１から分かるように、上段側一対の横材１０，１０の一端部同士と中縦材１１の上端部とをボルト・ナット１２で枢支連結し、下段側一対の横材１３，１３の一端部同士と中縦材１１の下端部とをボルト・ナット１４で枢支連結すると共に、上下両段の各横材１０，１３の他端部を夫々ボルト・ナット１５，１６で竪杆５に枢着することによって、図３及び図６の▲１▼〜▲３▼に示すように両竪杆５，５間で中折式に折り畳み可能に構成されている。
【００１１】
各竪杆５の下端部側には上方部位に取付金具１７が設けられ、その下方部位に支持金具１８が設けられている。図５の（ａ）及び（ｂ）から分かるように、取付金具１７は、竪杆５に突設された取付片１７ａと、この取付片１７ａ先端側下部に下向きに突設され、支柱２に設けられたフランジ部材７の係合孔８に上方から挿入される楔片１７ｂと、取付片１７ａ先端部に取り付けられて、単管足場４の支柱２の外周面に係合可能な凹面状係合片１７ｃと、から構成される。また、支持金具１８は、竪杆５に突設された取付片１８ａと、この取付片１８ａの先端部に取り付けられて、支柱２の外周面に係合可能な凹面状係合片１８ｂと、から構成される。
【００１２】
図１、図３及び図５において、１９は手摺材（上桟）、２０は手摺材（中桟）で、各手摺材１９，２０の両端部にはコ字枠片２１が取り付けてあって、支柱２に設けられたフランジ部材７の係合孔８に係合する楔２２によって支柱２に取り付けられるようになっている。また、図１及び図３において、２４は安全手摺１の各竪杆５の上端部に突設された楔取外し用の金具で、安全手摺１の取外しにあたって、フランジ部材７の係合孔８に係合した楔２２を取り外す時に、この金具２４の下端部をハンマー等で上向きに叩くことによって、楔２２をフランジ部材７の係合孔８から抜き出すようにする。
【００１３】
次に、上記のような構成よりなる安全手摺１の使用方法について、図６を中心に他の図面を参照しながら説明する。図６において、実線で示される足場板３は単管足場４における既設の下段側足場板であり、仮想線で示される足場板３は新設の上段側足場板である。安全手摺１は、既設の下段側足場板３から、新設した上段側足場板３の先行仮設手摺りとして取り付けるものである。
【００１４】
取付けにあたっては、両側一対の竪杆５，５と両竪杆５，５間に中折式に折り畳み自在な手摺本体６とからなる安全手摺１を、両竪杆５，５と手摺本体６とが略々１本の棒状体となるように折り畳んだ状態（図３及び図６の▲１▼参照）にしておく。しかして、折り畳んだ安全手摺１を、作業員Ｍが図６の▲１▼に示すように単管足場４における既設の下段側足場板３（実線図示）上で持ち歩いて、その一方の竪杆５の下端部側を、足場板３の長手方向に対向する両支柱２，２の一方に取り付ける。
【００１５】
この一方の竪杆５の取付けにあたっては、折り畳んだ安全手摺１の下端部が図示のように上段側足場板３（仮想線図示）の下方に位置する状態から、当該一方の竪杆５の取付金具１７の楔片１７ｂを、支柱２上端部のフランジ部材７の係合孔８に係着すると共に、凹面状係合片１７ｃを支柱２の外周面に係合させ、またその下方にある支持金具１８の凹面状係合片１８ｂを支柱２の外周面に係合させる。
【００１６】
こうして安全手摺１の一方の竪杆５を一方の支柱２に取り付けたならば、作業員Ｍが図６の▲２▼に示すように他方の竪杆５の下端部を持って、他方の支柱２側へ移動しながら手摺本体６を展開し、同図の▲３▼に示すように他方の竪杆５の下端部側を他方の支柱２に取り付ける。即ち、当該他方の竪杆５の取付金具１７の楔片１７ｂを、支柱２上端部のフランジ部材７の係合孔８に係着すると共に、凹面状係合片１７ｃを支柱２外周面に係合させ、その下方にある支持金具１８の凹面状係合片１８ｂを支柱２の外周面に係合させればよく、これによって安全手摺１の取付けを終える。
【００１７】
図６の▲３▼に示す状態に安全手摺１を取り付けた後、支柱２を継ぎ足すと共に、横方向（足場板３の長手方向と直交する方向）に隣り合う支柱２同士を横ステー９で連結して図１及び図２の仮想線で示すような状態とする。そして図１の仮想線で示すように、縦方向（足場板３の長手方向）に隣合う支柱２，２間に手摺材（上桟）１９を設置し、これら両支柱２，２上端部間に新たに足場板３を架け渡す。この新たな足場板３が新設の足場板３であり、それまでの上段側足場板３が既設の下段側足場板３となる。この後、安全手摺１を支柱２，２から取り外し、この取り外した支柱２，２の下端部間に手摺材（下桟）２０を設置する。
【００１８】
その後は、上記既設の下段側足場板３から、上記取り外した安全手摺１を上記新設した上段側足場板３の先行仮設手摺りとして、上述した図６の▲１▼〜▲３▼に示すような要領で取り付ける。そして、上記のような安全手摺１の取付作業を順次繰り返すことによって、足場組立時の足場３における安全手摺１の取付作業が行われることになる。
【００１９】
以上説明したような本発明の安全手摺１は、足場板３の長手方向に隣り合う支柱２，２に添うように取り付けられる両側一対の竪杆５，５と、両端部が両竪杆５，５の上端部側に枢着されて、両竪杆５，５間で中折式に折り畳み自在な手摺本体６とからなるものであって、折り畳めば、略々１本の棒状体となり、展開すれば、略々門形の安定した手摺使用形態となるから、持ち運びが簡単であると共に、取付作業が非常に容易となる。その取付作業においては、上記したように、折り畳んだ安全手摺１の一方の竪杆５の下端部側を両支柱２，２の一方に取り付けた後、他方の竪杆５の下端部を持って、そのまま他方の支柱２側へ移動しながら手摺本体６を展開して、他方の竪杆５下端部を他方の支柱２に取り付ければよいから、その取付作業を迅速容易に行なうことができる。
【００２０】
また、この実施形態のように、手摺本体６は、上段側一対の横材１０，１０の一端部同士と中縦材１１の上端部とを枢支連結し、下段側一対の横材１０，１０の一端部同士と中縦材１１の下端部とを枢支連結すると共に、各横材１０の他端部を竪杆５に夫々枢着することによって形成されるから、部品点数が少ないにもかかわらず、コンパクトに折り畳むことができると共に、安定な手摺使用形態に迅速容易に展開させることができ、しかも構造的に堅固で、先行仮設手摺として極めて有効な安全手摺となる。
【００２１】
また、この実施形態のように、各竪杆５の下端部側に設けられる取付金具１７は、単管足場４の支柱２に設けられたフランジ部材７の係合孔８に上方から挿入される下向きの楔片１７ｂを有するから、支柱２への竪杆５の取付けを迅速容易に行なうことができる。また、この取付金具１７の下方に設けられる支持金具１８が、支柱２の外周面に係合可能な凹面状の係合部材１８ｂを有するから、竪杆５を支柱２に対し安定良く取り付けることができる。
【００２２】
【発明の効果】
請求項１に係る発明の安全手摺は、支柱に添うように取り付けられる両側一対の竪杆と、両端部が両竪杆の上端部側に枢着されて、両竪杆間で中折式に折り畳み自在な手摺本体と、からなるもので、折り畳めば、略々１本の棒状体となり、展開すれば、略々門形の安定した手摺使用形態となるから、持ち運びが容易で、特に既設の下段足場板上での搬送が容易となり、また取付作業を短時間で簡単に行うことができる。
【００２３】
請求項２に係る発明の安全手摺は、手摺本体が、上段側一対の横材の一端部同士中縦材１１の上端部とを枢支連結し、下段側一対の横材の一端部同士と中縦材の下端部とを枢支連結すると共に、各横材の他端部を竪杆に夫々枢着して形成されるから、部品点数が少ないにもかかわらず、コンパクトに折り畳むことができると共に、安定な手摺使用形態に迅速容易に展開させることができ、しかも構造的に堅固で、先行仮設手摺として極めて有効な安全手摺となる。
【００２４】
請求項３に係る発明の安全手摺は、各竪杆の取付金具は、単管足場の支柱に設けられたフランジ部材の係合孔に上方から挿入される下向き楔片を有するから、支柱への竪杆の取付けを迅速容易に行なうことができ、また取付金具の下方に設けられる支持金具は、支柱の外周面に係合可能な凹面状係合部材を有するから、竪杆を支柱に対し安定良く取り付けることができる。
【図面の簡単な説明】
【図１】 本発明に係る安全手摺を示す正面図である。
【図２】 同安全手摺の平面図である。
【図３】 同安全手摺の折り畳み状態を示す正面図である。
【図４】 同折り畳み状態の平面図である。
【図５】 （ａ）は同安全手摺の竪杆に設けてある取付金具及び支持金具を示す斜視図、（ｂ）はその側面図である。
【図６】 ▲１▼〜▲３▼は同安全手摺の取付方法を説明する説明図である。
【符号の説明】
１ 安全手摺
２ 支柱
３ 足場板
４ 単管足場
５ 安全手摺の竪杆
６ 安全手摺の手摺本体
１０ 手摺本体の横材
１１ 手摺本体の中縦材
１７ 取付金具
１７ｂ 楔片
１８ 支持金具
１８ｂ 係合部材[0001]
BACKGROUND OF THE INVENTION
In the construction work site, when assembling a single-pipe scaffolding in which a plurality of support columns that are vertically connected and a scaffold plate is assembled between adjacent support columns in a plurality of vertical stages, The present invention relates to a safety handrail to be attached as a preliminary temporary handrail of a newly installed upper stage side scaffolding board from a scaffolding board.
[0002]
[Prior art]
Although the conventional safety handrail cannot specifically raise known documents, a rectangular frame is formed by arranging a plurality of middle rails on a peripheral frame formed by a pair of side ridges and upper and lower side ridges. This rectangular frame-shaped handrail is attached to both adjacent struts by lifting it from the existing lower stage scaffolding plate to the newly installed upper stage side scaffolding plate.
[0003]
[Problems to be solved by the invention]
The safety handrail as described above has a rectangular frame shape, which makes it difficult for workers to hold, and is troublesome to carry on the existing lower scaffolding plate, and because it has a rectangular frame shape, on the existing lower scaffolding plate. It is necessary to lift the safety handrail in such a way that the worker will be a thousand years old, and to perform the installation work with the newly installed upper side scaffolding plate, so the installation work of the safety handrail is very troublesome, and it takes a lot of time and effort It was hanging.
[0004]
An object of the present invention is to provide a safety handrail that can be easily transported on an existing lower scaffold plate and can be easily attached in a short time.
[0005]
[Means for Solving the Problems]
The safety handrail according to the first aspect of the present invention is a single-tube scaffold 4 in which a plurality of support columns 2 joined in the vertical direction are arranged side by side, and a scaffold plate 3 is assembled between two adjacent support columns 2 and 2 in a plurality of steps. When assembling, the safety handrail 1 attached as a temporary handrail for the newly installed upper stage scaffolding plate 3 from the existing lower stage scaffolding plate 3 is attached so as to follow the columns 2 and 2 adjacent in the longitudinal direction of the scaffolding plate 3. It consists of a pair of side walls 5 and 5 and a handrail body 6 whose both ends are pivotally attached to the upper ends of both sides 5 and 5 and can be folded in a folding manner between both sides 5 and 5. Each ridge 5 is characterized in that its lower end side is detachably attached to the column 2.
[0006]
Claim 2 is the safety handrail according to claim 1, wherein the handrail body 6 is pivotally connected to one end portions of the pair of lateral members 10, 10 and the upper end portion of the middle longitudinal member 11, and the lower step side. It is formed by pivotally connecting one end portions of the pair of cross members 10 and 10 and the lower end portion of the middle vertical member 11 and pivotally connecting the other end portions of the cross members 10 to the flange 5 respectively. It is characterized by.
[0007]
Claim 3 is the safety handrail according to claim 1 or 2, wherein a mounting bracket 17 is provided at an upper portion and a supporting bracket 18 is provided at a lower portion on the lower end side of each hook 5, respectively. It has a downward wedge piece 17b inserted from above into the engagement hole 8 of the flange member 7 provided in the flange 5 of the single pipe scaffold 4, and the support fitting 18 can be engaged with the outer peripheral surface of the column 2. It has a concave engaging member 18b.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
1 is a front view showing a safety handrail 1 according to the present invention, FIG. 2 is a plan view of the safety handrail 1, FIG. 3 is a front view showing a folded state of the safety handrail 1, and FIG. 4 is a plan view of the folded state. FIG. 5A is a perspective view showing a mounting bracket and a support bracket provided on the saddle of the safety handrail, and FIG. 5B is a side view thereof. (1) to (3) in FIG. 6 are explanatory views for explaining a method of attaching the safety handrail. As shown by the phantom line in FIG. 1, the safety handrail 1 includes a plurality of support columns 2 that are joined in the vertical direction, and is disposed between the support columns 2 and 2 adjacent in the vertical direction (longitudinal direction of the scaffold plate 3). When assembling the single-pipe scaffolding 4 that assembles the scaffolding board 3 across the upper and lower stages, as shown in FIG. 6, the newly installed upper stage scaffolding board 3 (virtual line illustration) from the existing lower stage scaffolding board 3 (solid line illustration) as shown in FIG. It is attached as a preceding temporary handrail, and a pair of opposite sides 5 and 5 attached so as to follow adjacent struts 2 and 2, and both ends pivot to the upper end side of both sides 5 and 5. It is composed of a handrail body 6 that is worn and foldable in a folding manner, and each ridge 5 is detachably attached to the ridge 5 at its lower end side.
[0009]
A flange member 7 is fixed to each column 2 at a required interval in the longitudinal direction, and four engagement holes 8 are formed at intervals of 90 degrees in each flange member 7. Both end portions of the scaffold plate 3 are hooked by the hooks 23 to the lateral stays 9 and 9 connected to the flange members 7 and 7 of the support columns 2 and 2 adjacent in the lateral direction of the single tube scaffold 4.
[0010]
As shown in FIG. 1, the handrail body 6 of the safety handrail 1 is pivotally connected to one end portions of the upper side pair of cross members 10, 10 and the upper end portion of the middle vertical member 11 with bolts and nuts 12. One end of the pair of side members 13 and 13 and the lower end of the middle vertical member 11 are pivotally connected by bolts and nuts 14, and the other ends of the upper and lower cross members 10 and 13 are respectively bolted.・ It is constructed so that it can be folded in a folding manner between the two cages 5 and 5, as shown in (1) to (3) in FIGS. ing.
[0011]
A mounting bracket 17 is provided in the upper part on the lower end side of each flange 5, and a support metal fitting 18 is provided in the lower part thereof. As can be seen from FIGS. 5A and 5B, the mounting bracket 17 is provided with a mounting piece 17 a protruding from the flange 5, and protruding downward from the lower end of the mounting piece 17 a. A wedge piece 17b inserted from above into the engagement hole 8 of the provided flange member 7 and a concave engagement that is attached to the distal end of the attachment piece 17a and engages with the outer peripheral surface of the column 2 of the single-tube scaffold 4 And a piece 17c. The support fitting 18 includes an attachment piece 18a protruding from the flange 5, a concave engagement piece 18b attached to the distal end portion of the attachment piece 18a and engageable with the outer peripheral surface of the support column 2. Consists of
[0012]
1, 3, and 5, 19 is a handrail material (upper rail), 20 is a handrail material (middle rail), and U-shaped frame pieces 21 are attached to both ends of each handrail material 19, 20. The wedge 2 is engaged with the engagement hole 8 of the flange member 7 provided on the support 2 and is attached to the support 2. In FIGS. 1 and 3, reference numeral 24 denotes a metal fitting for removing the wedge projecting from the upper end of each hook 5 of the safety handrail 1, and when the safety handrail 1 is removed, the engagement hole 8 of the flange member 7 is inserted into the engagement hole 8. When the engaged wedge 22 is removed, the lower end portion of the metal fitting 24 is hit upward with a hammer or the like so that the wedge 22 is extracted from the engagement hole 8 of the flange member 7.
[0013]
Next, a method of using the safety handrail 1 having the above-described configuration will be described with reference to other drawings centering on FIG. In FIG. 6, the scaffold board 3 indicated by a solid line is an existing lower stage scaffold board in the single-tube scaffold 4, and the scaffold board 3 indicated by an imaginary line is a newly installed upper stage scaffold board. The safety handrail 1 is attached as a preceding temporary handrail of the newly installed upper stage scaffolding plate 3 from the existing lower stage scaffolding plate 3.
[0014]
At the time of attachment, the safety handrail 1 comprising the pair of side walls 5, 5 and the handrail body 6 that can be folded in a folding manner between both sides 5, 5 is attached to both the side walls 5, 5 and the handrail body 6. Is folded so as to be approximately one rod-like body (see (1) in FIGS. 3 and 6). As shown in FIG. 6 (1), the worker M carries the folded safety handrail 1 on the existing lower stage scaffolding plate 3 (shown by the solid line) in the single-pipe scaffolding 4, and one of the cages 5 is attached to one of the support columns 2 and 2 facing the longitudinal direction of the scaffold plate 3.
[0015]
When attaching the one heel 5, the lower end of the folded safety handrail 1 is located below the upper stage scaffolding plate 3 (shown in phantom line) as shown in the figure, and the one heel 5 is attached. The wedge piece 17b of the metal fitting 17 is engaged with the engagement hole 8 of the flange member 7 at the upper end of the support column 2, and the concave engagement piece 17c is engaged with the outer peripheral surface of the support column 2, and the support below the support piece 17 is provided. The concave engaging piece 18 b of the metal fitting 18 is engaged with the outer peripheral surface of the support column 2.
[0016]
In this way, when one saddle 5 of the safety handrail 1 is attached to one strut 2, the worker M holds the lower end of the other scissor 5 as shown in (2) of FIG. The handrail body 6 is unfolded while moving to the second side, and the lower end side of the other hook 5 is attached to the other support column 2 as shown by (3) in FIG. That is, the wedge piece 17b of the mounting bracket 17 of the other flange 5 is engaged with the engagement hole 8 of the flange member 7 at the upper end of the support column 2, and the concave engagement piece 17c is engaged with the outer peripheral surface of the support column 2. Then, the concave engaging piece 18b of the supporting metal member 18 below the engaging bracket 18 may be engaged with the outer peripheral surface of the support column 2, thereby completing the mounting of the safety handrail 1.
[0017]
After attaching the safety handrail 1 to the state shown in (3) in FIG. 6, the column 2 is added and the columns 2 adjacent to each other in the horizontal direction (direction perpendicular to the longitudinal direction of the scaffolding plate 3) are connected by the horizontal stay 9. Connected to the state shown by the phantom lines in FIGS. As shown by the phantom lines in FIG. 1, a handrail material (upper rail) 19 is installed between the columns 2 and 2 adjacent to each other in the vertical direction (longitudinal direction of the scaffolding plate 3), and between the upper ends of these columns 2 and 2 The scaffolding board 3 is newly bridged. This new scaffold board 3 is a newly installed scaffold board 3, and the upper stage side scaffold board 3 until then becomes the existing lower stage side scaffold board 3. Thereafter, the safety handrail 1 is removed from the support columns 2 and 2, and a handrail material (lower rail) 20 is installed between the lower ends of the removed support columns 2 and 2.
[0018]
Thereafter, the safety handrail 1 removed from the existing lower stage scaffolding plate 3 is used as a temporary temporary handrail for the newly installed upper stage scaffolding plate 3 as shown in (1) to (3) of FIG. Attach in the proper manner. And the installation operation | work of the safety handrail 1 in the scaffold 3 at the time of scaffold assembly is performed by repeating the installation operation | work of the above safety handrail 1 sequentially.
[0019]
As described above, the safety handrail 1 of the present invention includes a pair of side bars 5 and 5 attached so as to follow the support columns 2 and 2 adjacent to each other in the longitudinal direction of the scaffold plate 3, and both side parts are both side bars 5 and 5. 5 is composed of a handrail main body 6 that is pivotally attached to the upper end side of 5 and can be folded in a folding manner between both sides 5 and 5. When folded, it becomes a substantially single rod-like body that is unfolded. Then, since it becomes a substantially gate-shaped stable handrail use form, it is easy to carry and attachment work becomes very easy. In the mounting work, as described above, after attaching the lower end portion of one of the saddles 5 of the folded safety handrail 1 to one of the columns 2 and 2, the lower end of the other saddle 5 is held. Since the handrail main body 6 is expanded while moving to the other support column 2 as it is and the lower end of the other hook 5 is attached to the other support column 2, the attaching operation can be performed quickly and easily.
[0020]
Further, as in this embodiment, the handrail main body 6 is pivotally connected between one end portions of the upper pair of cross members 10 and 10 and the upper end portion of the middle vertical member 11, so that the lower pair of cross members 10, 10 Since one end portions of 10 and the lower end portion of the middle longitudinal member 11 are pivotally connected and the other end portions of the respective cross members 10 are pivotally attached to the flange 5 respectively, the number of parts is reduced. Nevertheless, it can be folded compactly, can be quickly and easily deployed in a stable handrail usage form, and is a structurally robust safety handrail that is extremely effective as a preliminary temporary handrail.
[0021]
Further, as in this embodiment, the mounting bracket 17 provided on the lower end side of each rod 5 is inserted from above into the engagement hole 8 of the flange member 7 provided in the column 2 of the single pipe scaffold 4. Since the downward wedge piece 17b is provided, the rod 5 can be quickly and easily attached to the column 2. Further, since the support bracket 18 provided below the mounting bracket 17 has a concave engagement member 18b that can be engaged with the outer peripheral surface of the support column 2, it is possible to stably attach the flange 5 to the support column 2. it can.
[0022]
【The invention's effect】
The safety handrail of the invention according to claim 1 includes a pair of heels that are attached so as to follow the column, and both ends are pivotally attached to the upper end side of both heels, and are folded between the two halves. It is composed of a handrail body that can be folded freely. When it is folded, it becomes approximately one rod-shaped body. When it is unfolded, it becomes a substantially hand-shaped stable handrail usage form. Transport on the lower scaffolding plate is facilitated, and the mounting operation can be easily performed in a short time.
[0023]
In the safety handrail of the invention according to claim 2, the handrail main body pivotally connects the upper end portions of the middle vertical members 11 with the one end portions of the upper pair of cross members, and the one end portions of the lower pair of cross members. It is formed by pivotally connecting the lower end of the middle vertical member and pivotally connecting the other end of each cross member to each other, so that it can be folded compactly despite the small number of parts. At the same time, it can be quickly and easily deployed in a stable handrail usage form, and is a structurally solid safety handrail that is extremely effective as a preceding temporary handrail.
[0024]
In the safety handrail of the invention according to claim 3, the mounting bracket of each heel has a downward wedge piece inserted from above into the engagement hole of the flange member provided in the support column of the single pipe scaffold. The hook can be mounted quickly and easily, and the support fitting provided below the fitting has a concave engaging member that can be engaged with the outer peripheral surface of the column, so that the rod is stable with respect to the column. Can be installed well.
[Brief description of the drawings]
FIG. 1 is a front view showing a safety handrail according to the present invention.
FIG. 2 is a plan view of the safety handrail.
FIG. 3 is a front view showing a folded state of the safety handrail.
FIG. 4 is a plan view of the same folded state.
FIG. 5A is a perspective view showing a mounting bracket and a support bracket provided on the saddle of the safety handrail, and FIG. 5B is a side view thereof.
FIGS. 6A to 6 are explanatory views for explaining a method of attaching the safety handrail.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Safety handrail 2 Support | pillar 3 Scaffolding board 4 Single pipe scaffold 5 Safety handrail ridge 6 Safety handrail handrail main body 10 Handrail main body cross member 11 Middle vertical member 17 of handrail main body 17 Mounting bracket 17b Wedge piece 18 Support bracket 18b Engaging member

Claims (3)

上下方向に継ぎ足してなる支柱を複数並設すると共に、隣り合う支柱間に足場板を上下複数段に架け渡して組み立てる単管足場の組立にあたり、既設の下段側足場板から、新設した上段側足場板の先行仮設手摺として取り付ける安全手摺であって、
足場板長手方向に隣り合う支柱に添うように取り付けられる両側一対の竪杆と、両端部が両竪杆の上端部側に枢着されて、両竪杆間で中折式に折り畳み自在な手摺本体とからなり、
各竪杆は、その下端部側を支柱に着脱自在に取り付けるようになっている安全手摺。When assembling a single-pipe scaffolding that assembles a plurality of support pillars that extend vertically, and assembles a scaffolding board that spans multiple stages above and below adjacent struts, a new upper scaffolding is installed from the existing lower scaffolding board. A safety handrail to be attached as a temporary temporary handrail of a board,
A pair of scissors that are attached so as to follow the struts adjacent to the longitudinal direction of the scaffolding plate, and handrails that can be folded in a folding manner between both scissors, with both ends pivoted to the top end of both scissors Consisting of the main body,
Each saddle is a safety handrail whose bottom end is detachably attached to the column. 手摺本体は、上段側一対の横材の一端部同士と中縦材の上端部とを枢支連結し、下段側一対の横材の一端部同士と中縦材の下端部とを枢支連結すると共に、各横材の他端部を竪杆に夫々枢着することによって形成される請求項１に記載の安全手摺。The handrail body pivotally connects one end of a pair of upper horizontal members and the upper end of a middle vertical member, and pivotally connects one end of a lower pair of horizontal members and the lower end of the middle vertical member. In addition, the safety handrail according to claim 1, wherein the safety handrail is formed by pivotally attaching the other end portion of each cross member to the rod. 各竪杆の下端部側には上方部位に取付金具を、下方部位に支持金具を夫々設け、取付金具は、単管足場の支柱に設けられたフランジ部材の係合孔に上方から挿入される下向きの楔片を有し、支持金具は、支柱の外周面に係合可能な凹面状の係合部材を有する請求項１又は２に記載の安全手摺。A mounting bracket is provided in the upper part and a support metal part is provided in the lower part on the lower end side of each rod, and the mounting bracket is inserted from above into the engagement hole of the flange member provided in the column of the single pipe scaffold. 3. The safety handrail according to claim 1, further comprising a wedge member facing downward, and the support fitting having a concave engagement member that can be engaged with an outer peripheral surface of the support column.
JP2003119833A 2003-04-24 2003-04-24 Safety handrail Expired - Fee Related JP3899330B2 (en)

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JP4181939B2 (en) * 2003-07-28 2008-11-19 光洋機械産業株式会社 Handrail mounting bracket for frame assembly scaffolding
JP4704766B2 (en) * 2005-02-18 2011-06-22 日鐵住金建材株式会社 Method for forming leading handrail frame and frame scaffold
CN107558727B (en) * 2017-09-08 2020-11-03 中建三局第一建设工程有限责任公司 Vertical stretching operation frame for low-position jacking mould frame and mounting and dismounting method thereof
CN109371838B (en) * 2018-10-15 2023-09-15 中交二航局第二工程有限公司 Integral catwalk deflection steel frame

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