JP2004360318A

JP2004360318A - Scaffold for detached house

Info

Publication number: JP2004360318A
Application number: JP2003160689A
Authority: JP
Inventors: Akiyoshi Okubo; 昭義大久保
Original assignee: Nikkeikin Aluminum Core Technology Co Ltd
Current assignee: Nikkeikin Aluminum Core Technology Co Ltd
Priority date: 2003-06-05
Filing date: 2003-06-05
Publication date: 2004-12-24
Anticipated expiration: 2023-06-05
Also published as: JP4001285B2

Abstract

<P>PROBLEM TO BE SOLVED: To improve assembling-disassembling workability and to improve safety by imparting lightness and strength to constituting members. <P>SOLUTION: This scaffold for a detached house has a plurality of columns 1 erected on the ground, a bracket 20 having a wege body 3 wedged in a wedge receiving part 2 installed on the respective columns 1, a scaffold plate 40 detachably installed between the brackets 20, and a handrail 30 having the wedge body 3 wedged in the wedge receiving part 2 of the respective columns 1. The columns 1 are composed of a plurality of column bodies detachably fitted, inserted, and fixed via a lock pin, and having the substantially same outside diametral dimension, and at least one column body is formed of an aluminum pipe. The aluminum pipe column body 10 has an expanded pipe part 12 capable of fitting and inserting an upper end small diameter part of the column body having a lower end part positioned in a lower stage, and an engaging hole 14 of the lock pin 50. A leg piece 2e of the wedge receiving part 2 is fixed to an outer peripheral surface of the column body 10 by welding W. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
この発明は、例えば２階建てや３階建て等の低中層の戸建住宅用足場に関するものである。
【０００２】
【従来の技術】
一般に、戸建住宅を建設する場合、地上に適宜間隔をおいて立設される複数の支柱と、各支柱に装着されるブラケット間に架設される足場板と、手摺とを具備する足場を組み立てて外装作業や屋根作業等を行っている。この場合、溶接等によって支柱に固着された略コ字状の楔受け部に、ブラケットあるいは手摺の端部に装着された楔体をハンマで叩いてブラケットや手摺等を固定する楔式足場が知られている（例えば、特許文献１参照）。
【０００３】
【特許文献１】
特開平５−２２２８３９号公報（特許請求の範囲、段落番号０００９〜００１２、図２）
また、支柱を、上端にほぞ部である小径部を有する複数の支柱体を小径部に嵌め込んで接続すると共に、これら小径部及び支柱体の下端部の側面に設けられた孔を貫通して係合するロックピンにて着脱可能に固定する構造が知られている（例えば、特許文献２参照）。
【０００４】
【特許文献２】
登録実用新案第２５４１３４９号公報（実用新案登録請求の範囲、図１、図２）
上記ロックピンは、金属製板材を略コ字状に形成した板バネ体と、この板バネ体の両端の脚部に取り付けられる金属鋳物等にて形成されるピン部材とで構成されている。また、ピン部材には、支柱体を嵌挿するとき、ピン部材を後退させる縦斜面と、小径部を嵌挿する支柱体を捻ったとき、ピン部材を後退させる横斜面が形成されている。
【０００５】
【発明が解決しようとする課題】
ところで、この種の足場においては、支柱は強度を持たせるために鉄製の支柱体を用い、また、ブラケットや手摺においては、楔体をハンマで叩いて楔受け部に嵌挿して楔着し、取り外す場合には逆方向からハンマで叩いて取り外すため、これにおいても強度を持たせるために鉄製部材にて形成されている。
【０００６】
しかしながら、足場を構成する支柱体、ブラケット及び手摺等の部材を全て鉄製部材にすると、部材の重量が嵩むため、特に高所への部材の運搬に労力を要するばかりか、足場の組立及び解体作業が面倒な上、危険が伴うという問題があった。
【０００７】
この問題を解決する方法として、足場の構成部材の軽量化を図るために、構成部材をアルミニウム製部材にて形成することが考えられるが、上述したような楔式足場においては、ハンマ等で叩いてブラケットや手摺を取り付け、取り外しするため、楔受け部を強固に取り付ける必要がると共に、ブラケット及び手摺自体に強度性を持たせる必要があり、軽量化と強度性とで二律背反の問題がある。
【０００８】
この発明は上記事情に鑑みてなされたもので、構成部材に軽量かつ強度性を持たせて組立及び解体の作業性の向上と安全性の向上を図れるようにした戸建住宅用足場を提供することを目的とする。
【０００９】
【課題を解決するための手段】
上記課題を解決するために、この発明の戸建住宅用足場は、地上に適宜間隔をおいて立設される複数の支柱と、各支柱に装着された楔受け部に楔着される楔体を有するブラケットと、このブラケット間に着脱可能に架設される足場板と、上記各支柱の楔受け部に楔着される楔体を有する手摺とを具備する戸建住宅用足場を前提とし、上記支柱を、弾性変形可能なロックピンを介して着脱可能に嵌挿固定される、外径寸法が略同一の複数の支柱体にて構成すると共に、少なくとも一つの支柱体をアルミニウムパイプにて形成し、上記アルミニウムパイプ製支柱体は、下端部が下段に位置する支柱体の上端小径部を嵌挿し得るように拡管されると共に、上記ロックピンの係合孔を有し、かつ、この支柱体の外周面に、断面略コ字状に形成される上記楔受け部の脚片を溶接によって固着してなる、ことを特徴とする（請求項１）。ここで、アルミニウムとは、アルミニウム又はアルミニウム合金を含む意味である。
【００１０】
請求項１記載の発明において、上記支柱体の外周面に、楔受け部の取付段部溝を沿設し、この取付段部溝に、上記楔受け部の脚片を係合させると共に、溶接によって固着する方が好ましい（請求項２）。
【００１１】
請求項３記載の発明は、請求項１記載の戸建住宅用足場において、上記ロックピンは、弾性を有する線状部材を略逆Ｖ字状に屈曲してなる基部と、この基部の両端から互いに離反する外側方向に屈曲された第１の傾斜片と、この第１の傾斜片の先端から支柱体の小径部に設けられた対向する窓孔を貫通する係止用屈曲部を介して互いに離反する内側方向に屈曲された第２の傾斜片とを具備し、支柱体を下段の支柱体の小径部に嵌挿した状態において、上記屈曲部が支柱体の係合孔に係合して支柱体を固定し、支柱体を上記第１及び第２の傾斜片の傾き方向に回転することにより、上記ロックピンの固定を解除して、支柱体を取り外し可能に形成してなる、ことを特徴とする。
【００１２】
この発明において、上記ブラケットは、上下部が肉厚に形成されるアルミニウムパイプ製のブラケット本体と、このブラケット本体の端部に装着される鉄製の楔体とを具備する方が好ましい（請求項４）。
【００１３】
また、上記手摺は、上下部が肉厚に形成されると共に、対向する両外側面に凹状取付部が形成されるアルミニウムパイプ製の手摺本体と、この手摺本体の端部に装着される鉄製の楔体とを具備する方が好ましく、また、上記楔体は、上記手摺本体の凹状取付部に嵌合する凹状部を有する取付筒部と、この取付筒部に固着される楔部とを具備し、上記楔体の取付筒部及び手摺本体の凹状取付部に穿設された貫通孔を貫通するボルトにナットを締結して手摺本体に楔体を固着し、この際、ボルトの頭部及びナットを上記凹状部内に納めるようにする方が好ましい（請求項５）。
【００１４】
請求項１記載の発明によれば、支柱を、弾性変形可能なロックピンを介して着脱可能に嵌挿固定される、外径寸法が略同一の複数の支柱体にて構成すると共に、少なくとも一つの支柱体をアルミニウムパイプにて形成し、このアルミニウムパイプ製支柱体は、下端部が下段に位置する支柱体の上端小径部を嵌挿し得るように拡管されると共に、ロックピンの係合孔を有することにより、支柱を構成する支柱体を軽量にすることができ、また、既存の鉄製の支柱体との互換性を持たせることができる。この場合、アルミニウムパイプ製支柱体の外周面に、楔受け部の取付段部溝を沿設し、この取付段部溝に、断面略コ字状に形成される楔受け部の脚片を係合させると共に、溶接によって固着することにより、溶接部の接触面積を大きくして楔受け部を固着することができる（請求項２）。
【００１５】
請求項３記載の発明によれば、ロックピンは、弾性を有する線状部材を略逆Ｖ字状に屈曲してなる基部と、この基部の両端から互いに離反する外側方向に屈曲された第１の傾斜片と、この第１の傾斜片の先端から支柱体の小径部に設けられた対向する窓孔を貫通する係止用屈曲部を介して互いに離反する内側方向に屈曲された第２の傾斜片とを具備し、支柱体を下段の支柱体の小径部に嵌挿した状態において、屈曲部が支柱体の係合孔に係合して支柱体を固定し、支柱体を第１及び第２の傾斜片の傾き方向に回転することにより、ロックピンの固定を解除して、支柱体を取り外し可能に形成するので、１本の線状部材によって軽量かつ取扱い容易なロックピンを得ることができ、また、支柱体の固定を確実にすることができると共に、取り外しを簡単にすることができる。
【００１６】
請求項４記載の発明によれば、ブラケットは、上下部が肉厚に形成されるアルミニウムパイプ製のブラケット本体と、このブラケット本体の端部に装着される鉄製の楔体とを具備するので、ブラケットの軽量化を図ることができ、また、ブラケットを支柱体に取り付ける際、あるいは取り外す際に、ブラケットをハンマで叩いてもブラケットが変形したり損傷する虞がない。
【００１７】
請求項５記載の発明によれば、手摺は、上下部が肉厚に形成されると共に、対向する両外側面に凹状取付部が形成されるアルミニウムパイプ製の手摺本体と、この手摺本体の端部に装着される鉄製の楔体とを具備するので、手摺の軽量化を図ることができ、また、手摺を支柱体に取り付ける際、あるいは取り外す際に、手摺をハンマで叩いても手摺が変形したり損傷する虞がない。また、楔体は、手摺本体の凹状取付部に嵌合する凹状部を有する取付筒部と、この取付筒部に固着される楔部とを具備し、楔体の取付筒部及び手摺本体の凹状取付部に穿設された貫通孔を貫通するボルトにナットを締結して手摺本体に楔体を固着し、この際、ボルトの頭部及びナットを凹状部内に納めることにより、手摺からの突起部をできる限り少なくすることができる。
【００１８】
【発明の実施の形態】
以下に、この発明の実施の形態を図面に基づいて詳細に説明する。
【００１９】
図１は、この発明の戸建住宅用足場の要部を示す斜視図（ａ）及び足場を構成する支柱体の連結部すなわち嵌挿固定部を示す拡大断面図（ｂ）である。
【００２０】
上記足場は、地上に適宜間隔をおいて立設される複数の支柱１と、各支柱１に装着された楔受け部２に楔着される楔体３を有するブラケット２０と、このブラケット２０間に着脱可能に架設される足場板４０と、各支柱１の楔受け部２に楔着される楔体３を有する手摺３０とで主に構成されている。
【００２１】
上記支柱１は、後述する弾性変形可能なロックピン５０を介して着脱可能に嵌挿固定される、外径寸法が略同一の複数の支柱体１０にて構成されており、少なくとも一つの支柱体１０はアルミニウムパイプにて形成されている。この場合、例えば、地上に設置されるジャッキベース部材４に連結される最下段の支柱体１０Ａを鉄製のパイプ部材にて形成し、支柱体１０Ａ以外の支柱体１０を全てアルミニウムパイプ製にするか、あるいは、鉄製パイプとアルミニウムパイプの混合とすることができる。なお、ジャッキベース部材４に連結される最下段の支柱体を含めて全てアルミニウムパイプ製の支柱体１０とすることも可能である。
【００２２】
アルミニウムパイプ製支柱体１０（以下に、支柱体１０という）は、図２に示すように、上端に小径部１１を延在し、下端部には下段に位置する支柱体１０（１０Ａ）の上端小径部１１を嵌挿し得る拡管部１２を有し、拡管部１２の対向する側面にロックピン５０の係合孔１４を有し、かつ、この支柱体１０の外周面の対向する４箇所に、楔受け部２（２ａ〜２ｄ）を取り付けるための断面略直角状の取付段部溝１５が支柱体１０の長手方向に沿設されている。また、支柱体１０における適宜間隔をおいた取付段部溝１５には、断面略コ字状に形成される楔受け部２（２ａ〜２ｄ）の脚片２ｅが係合されると共に、その接合部が溶接Ｗによって固着されている（図３参照）。したがって、楔受け部２（２ａ〜２ｄ）の脚片２ｅが取付段部溝１５の底面と側面に接触するので、溶接部の接触面積が広くなり、楔受け部２（２ａ〜２ｄ）が強固に固着される。
【００２３】
なお、この場合、４個の楔受け部２（２ａ〜２ｄ）が近傍部位に固着されており、対向する２個の楔受け部２ａ，２ｂが同一高さ位置に固着され、残りの２個の楔受け部２ｃ，２ｄが楔受け部２ａ，２ｂの近傍下方側の直交する対向位置に固着されている（図２及び図３参照）。
【００２４】
また、支柱体１０は、押出成形によって取付段部溝１５を同時に形成したアルミニウムパイプにて形成される支柱体基部１０ａの上端開口部に、アルミニウムパイプにて形成される小径部１１を挿入し、支柱体基部１０ａの上端部の側面に設けられた貫通孔１０ｂを溶接Ｗして支柱体基部１０ａと小径部１１とを固定している（図４参照）。なお、支柱体基部１０ａの下端部を拡管加工して拡管部１２を形成する。このように形成される支柱体１０は、異なる長さの数種類、例えば３ｍ８０ｃｍ、１ｍ９０ｃｍ、９５ｃｍの３種類が用意されて、目的に応じて組み合せできるようになっている。
【００２５】
この場合、例えば、図４に示すように、支柱体基部１０ａの外径は４８．６ｍｍに形成されて、鉄製の支柱体１０Ａの外径と同一されている。また、支柱体基部１０ａの内径は４３ｍｍに形成されている。したがって、支柱体基部１０ａの肉厚は２．８ｍｍと厚く形成されており、支柱体１０の強度が高められている。なお、小径部１１の外径は４２．７ｍｍに形成され、拡管部１２の外径は４９．６ｍｍ、内径は４４ｍｍに形成されている。一方、鉄製支柱体１０Ａの外径は支柱体１０の外径と同様に４８．６ｍｍに形成され、内径は拡管部１２の内径と同様に４４ｍｍに形成され、鉄製支柱体１０Ａの小径部１１Ａの外径は支柱体１０の小径部１１と同様に４２．７ｍｍに形成されている。なお、ジャッキベース部材４の外径は４２．２ｍｍに形成されている。これら支柱体１０，１０Ａの外径寸法等は一例であり、略同一寸法であれば任意の寸法であってもよい。
【００２６】
上記のように、支柱体１０と鉄製支柱体１０Ａの外径寸法、小径部１１の外径寸法を同一にすると共に、拡管部１２の内径寸法と鉄製支柱体１０Ａの内径寸法とを同一にすることにより、支柱体１０と鉄製支柱体１０Ａとに互換性を持たせて選択使用することができる。すなわち、支柱体１０の拡管部１２に鉄製支柱体１０Ａの小径部１１Ａを嵌挿したり、あるいは、鉄製支柱体１０Ａの下端部に支柱体１０の小径部１１を嵌挿して、支柱体１０と鉄製支柱体１０Ａとを適宜選択して使用することができる。したがって、既存の鉄製支柱体１０Ａと支柱体１０とを同様に取り扱うことができるので、在庫管理や運搬が便利となる。
【００２７】
上記ロックピン５０は、図５に示すように、弾性を有する線状部材例えばばね鋼製針金を略逆Ｖ字状に屈曲してなる基部５１と、この基部５１の両端から互いに離反する外側方向に屈曲された第１の傾斜片５２と、この第１の傾斜片５２の先端から支柱体１０（１０Ａ）の小径部１１（１１Ａ）に設けられた対向する窓孔１３を貫通する係止用屈曲部５３を介して互いに離反する内側方向に屈曲された第２の傾斜片５４とを具備している。このように形成されるロックピン５０は、弾性力に抗して押圧して両第１及び第２の傾斜片５２，５４を近づけて、支柱体１０（１０Ａ）の小径部１１（１１Ａ）内に挿入され、その後、押圧力を解除して、小径部１１（１１Ａ）に設けられた窓孔１３内から屈曲部５３を外方に突出した状態にセットされる。そして、図６に示すように、支柱体１０（１０Ａ）を下段の支柱体１０（１０Ａ）の小径部１１（１１Ａ）に嵌挿した状態において、屈曲部５３が支柱体１０（１０Ａ）の係合孔１４に係合して支柱体１０（１０Ａ）を固定する。また、支柱体１０（１０Ａ）を第１及び第２の傾斜片５２，５４の傾き方向に回転する（捻る）ことにより、ロックピン５０の固定を解除して、支柱体１０（１０Ａ）を取り外し可能にすることができる。
【００２８】
上記のように、ロックピン５０を１本の線状部材例えばばね鋼製針金にて形成することができるので、従来のように、金属製板材を略コ字状に形成した板バネ体と、この板バネ体の両端の脚部に取り付けられる金属鋳物等にて形成されるピン部材とで構成されるロックピンに比べて材料を削減することができると共に、容易に成形することができる。また、取扱いが容易な上、支柱体１０（１０Ａ）同士を確実に固定することができると共に、容易に取り外すことができる。
【００２９】
上記手摺３０は、図７及び図８に示すように、上下部に肉厚部３２が形成されると共に、対向する両外側面に、端部側に開口して軸方向に延びる凹状取付部３３が形成されたアルミニウムパイプ製の手摺本体３１と、この手摺本体３１の端部に装着される鉄製例えばステンレス鋼製の楔体３とを具備している。
【００３０】
この場合、楔体３は、図１０に示すように、手摺本体３１の凹状取付部３３に嵌合する凹状部３４を有する取付筒部３５と、この取付筒部３５に例えば溶接等によって固着される楔部３６とで形成されている。
【００３１】
上記のように形成される楔体３を手摺本体３１に装着するには、図９に示すように、取付筒部３５及び手摺本体３１の凹状取付部３３に穿設された貫通孔３７を貫通するボルト３８にナット３９を締結して手摺本体３１に楔体３を固着する。この際、ボルト３８の頭部３８ａ及びナット３９を凹状部３４内に納めて、外部への突出部をできる限り少なくしてある。したがって、作業者が不用意に手摺３０に手や衣服を引っ掛けるのを防止することができる。
【００３２】
上記ブラケット２０は、図１１に示すように、上下部に肉厚部２２が形成されるアルミニウムパイプ製のブラケット本体２１と、このブラケット本体２１の両端部に装着される鉄製例えばステンレス鋼製の楔体３Ａと、先端がブラケット本体２１の下面に溶接等によって固着され、基端部に支柱体１０（１０Ａ）の側面に当接するＶ字状当接部２３を有するアルミニウム板製のブレース２４と、このブレース２４の基端側とブラケット本体２１の下面とにそれぞれ溶接等によって固着されるアルミニウム製の補強板２５と、ブラケット本体２１の対向する４箇所にそれぞれ溶接等によって固着される４個の断面略コ字状の楔受け部２Ａとを具備している。なお、ブラケット本体２１の両側の２箇所の対向する部位には、断面略コ字状の楔受け部２Ａが溶接等により固着されている。
【００３３】
この場合、楔体３Ａは、ブラケット本体２１に嵌合される取付筒部３５と、この取付筒部３５に例えば溶接等によって固着される楔部３６とで形成されている。この楔体３Ａをブラケット本体２１に装着するには、取付筒部３５及びブラケット本体２１に穿設された貫通孔（図示せず）を貫通するボルト３８にナット３９を締結してブラケット本体２１に楔体３Ａを固着する。この楔体３Ａはブラケット本体２１の両端部に装着されており、対峙する支柱１｛具体的には、支柱体１０（１０Ａ）｝に固着された対向する楔受け部２に楔着されることによってブラケット２０を強固に取り付けることができるようになっている。なお、楔体３Ａは必ずしもブラケット本体２１の両端部に装着する必要はなく、少なくともブレース２４の基端側に位置する端部に装着されていればよい。
【００３４】
一方、上記足場板４０は、図１２及び図１３に示すように、長手方向に沿う複数例えば７個（列）の凸部４１ａ，４１ｂを有する凹凸状の踏み板部４１と、この踏み板部４１の両端から下面に垂下する一対の断面略Ｌ字状の補強側壁片４２と、踏み板部４１の下面中間部の両側に垂下する互いに平行な２列の断面略矩形状の中空補強部４３とを具備するアルミニウム製押出形材にて形成されている。また、足場板４０の踏み板部４１の凸部４１ａ，４１ｂには、適宜間隔をおいて多数の滑り止め兼用の水抜き孔４４ａ，４４ｂが穿設されている。この場合、両中空補強部４３の間には３列の凸部４１ａが形成され、中空補強部４３より外側には凸部４１ａより幅広の２列の凸部４１ｂが形成されており、凸部４１ａには略方形状の水抜き孔４４ａが狭いピッチ間隔で穿設され、また、凸部４１ｂには長手方向が長い略矩形状の水抜き孔４４ｂが同じく狭いピッチ間隔で穿設されている。したがって、足場板４０の踏み板部４１は、開口率（例えば３７％）の大きい水抜き孔４４ａ，４４ｂが形成されるので、滑り難い上、表面に汚れが付き難く、しかも、建物の壁を汚す雨だれの跳ね返りを防止することができる。
【００３５】
また、足場板４０における長手方向の両端部にはアルミニウム製の塞ぎ板４５が溶接等によって固着されている。この塞ぎ板４５を介して足場板４０の一側には、長手方向の外方に突出するステンレス鋼製のフック金具４６がボルト４７及びナット４８によって固定されている。また、足場板４０における長手方向の両端部の他側部には、ブラケット２０に設けられた楔受け部２Ａに挿入されるステンレス鋼製の楔体３Ｂが溶接等によって固着されている。なお、塞ぎ板４５における中空補強部４３を塞ぐ部位には、水抜き孔４９が設けられている。
【００３６】
次に、この発明に係る足場の一例の組立手順について説明する。まず、ジャッキベース部材４と最下段の支柱体例えば鉄製支柱体１０Ａを連結する。次に、支柱体１０Ａの小径部１１Ａにロックピン５０を取り付ける。ロックピン５０を取り付けるには、弾性力に抗して押圧して両第１及び第２の傾斜片５２，５４を近づけて、支柱体１０Ａの小径部１１Ａ内に挿入した後、押圧力を解除して、小径部１１Ａに設けられた窓孔１３内から屈曲部５３を外方に突出した状態にセットする。なお、ロックピン５０を予め支柱体１０Ａの小径部１１Ａに取り付けておいてもよい。この状態で、支柱体１０Ａを立て、ジャッキベース部材４を図示しないアンカで固定して、複数の支柱体１０Ａを適時間隔に設置する。
【００３７】
次に、支柱体１０Ａにブラケット２０を取り付ける。この際、ブラケット２０の楔体３Ａをハンマで叩いて支柱体１０Ａに固着された楔受け部２に楔着して、ブラケット２０を取り付ける。同様にして各支柱体１０Ａにブラケット２０を取り付ける。
【００３８】
次に、隣接する支柱体１０Ａに取り付けられたブラケット２０間に足場板４０を架設する。この際、足場板４０に設けられた楔体３Ｂをハンマで叩いてブラケット２０に固着された楔受け部２に楔着すると共に、足場板４０に設けられたフック金具４６をブラケット本体２１に引っ掛けて足場板４０を強固に架設することができる。
【００３９】
次に、架設された足場板４０を利用して隣接する支柱体１０Ａに手摺３０を取り付ける。この際、手摺３０に設けられた楔体３をハンマで叩いて支柱体１０Ａに固着された楔受け部２に楔着して、手摺３０を強固に取り付けることができる。
【００４０】
また、足場板４０を利用して支柱体１０Ａの先端小径部１１Ａに２段目の支柱体例えばアルミニウムパイプ製支柱体１０を連結する。この際、支柱体１０の下端の拡管部１２内に小径部１１Ａを嵌挿させると、ロックピン５０の屈曲部５３が支柱体１０の係合孔１４に係合して支柱体１０が固定される。これにより、支柱体１０は回転が阻止されると共に、不用意に抜けることがなくなる。このようにして、各支柱体１０Ａの小径部１１Ａに拡管部１２を嵌挿して支柱体１０を連結する。
【００４１】
次に、支柱体１０に、上記と同様にブラケット２０を取り付ける。すなわち、ブラケット２０の楔体３Ａをハンマで叩いて支柱体１０に固着された楔受け部２に楔着して、ブラケット２０を取り付ける。同様にして各支柱体１０にブラケット２０を取り付ける。
【００４２】
次に、隣接する支柱体１０に取り付けられたブラケット２０間に、上記と同様に足場板４０を架設する。すなわち、足場板４０に設けられた楔体３Ｂをハンマで叩いてブラケット２０に固着された楔受け部２に楔着すると共に、足場板４０に設けられたフック金具４６をブラケット本体２１に引っ掛けて足場板４０を強固に架設する。
【００４３】
架設された足場板４０を利用して隣接する支柱体１０に、上記と同様に手摺３０を取り付ける。すなわち、手摺３０に設けられた楔体３をハンマで叩いて支柱体１０に固着された楔受け部２に楔着して、手摺３０を強固に取り付けることができる。
【００４４】
以下同様に、足場板４０を利用して、支柱体１０の小径部１１にロックピン５０を介して支柱体１０を嵌挿固定し、各支柱体１０にブラケット２０を取り付けると共に、ブラケット２０間に足場板４０を架設し、更に、隣接する支柱体１０間に手摺３０を取り付けて、所定の高さの足場を組み立てる。
【００４５】
上記のようにして組み立てられた足場は、最下段に鉄製の支柱体１０Ａを位置させ、その上方にアルミニウムパイプ製の支柱体１０を使用し、また、ブラケット２０はアルミニウム製のブラケット本体２１を有し、手摺３０においてもアルミニウムパイプからなる手摺本体３１を有するので、足場構成部材を軽量化することができ、高所での作業を容易にすると共に、安全に行うことができる。また、支柱体１０においても肉厚に形成されているので、強度が得られる。また、ブラケット２０及び手摺３０においては、ブラケット本体２１及び手摺本体３１の上下部に肉厚部２２，３２が形成され、しかも、ステンレス鋼製の楔体３，３Ａを装着してなるため、取り付ける際にハンマで叩いても変形する虞がなく、十分な強度が得られるので、寿命の増大が図れ、繰り返し使用することができる。また、手摺３０は、手摺本体３１と楔体３とを連結（締結）するボルト３８の頭部３８ａ及びナット３９を凹状部３４内に納めているので、手摺３０からの突起部をできる限り少なくすることができ、作業者が不用意に手を引っ掛けたり、衣服を引っ掛ける心配がなく、作業を安全にすることができる。
【００４６】
足場を解体する場合は、手摺３０と足場板４０とブラケット２０においては、楔体３，３Ａの取付筒部３５の下面等をハンマで叩いて楔体３，３Ａ，３Ｂと楔受け部２（２Ａ）との楔着を解いて、手摺３０、足場板４０及びブラケット２０を順に取り外す。また、支柱１を解体する場合は、上述したように、支柱体１０（１０Ａ）をロックピン５０の第１及び第２の傾斜片５２，５４の傾き方向に回転する（捻る）ことにより、ロックピン５０の固定を解除して、支柱体１０（１０Ａ）を取り外す。
【００４７】
足場を解体する場合においても、支柱体１０がアルミニウム製であり、また、ブラケット２０はアルミニウム製のブラケット本体２１を有し、手摺３０においてもアルミニウムパイプからなる手摺本体３１を有するので、高所での作業を容易にすると共に、安全に行うことができる。また、ブラケット２０及び手摺３０においては、ブラケット本体２１及び手摺本体３１の上下部に肉厚部２２，３２が形成され、しかも、ステンレス鋼製の楔体３，３Ａを装着してなるため、取り外しの際にハンマで叩いても変形する虞がなく、十分な強度が得られるので、寿命の増大が図れ、繰り返し使用することができる。
【００４８】
なお、上記説明では、最下段に鉄製の支柱体１０Ａを位置させ、その上方にアルミニウム製の支柱体１０を位置させる場合について説明したが、鉄製の支柱体１０Ａとアルミニウムパイプ製の支柱体１０とは互換性があり、しかも支柱体１０は肉厚に形成されて強度性を有するので、適宜選択して支柱１を構成することは可能である。
【００４９】
【発明の効果】
以上に説明したように、この発明によれば、上記のように構成されているので、以下のような優れた効果が得られる。
【００５０】
（１）請求項１記載の発明によれば、支柱を、弾性変形可能なロックピンを介して着脱可能に嵌挿固定される、外径寸法が略同一の複数の支柱体にて構成すると共に、少なくとも一つの支柱体をアルミニウムパイプにて形成し、このアルミニウムパイプ製支柱体は、下端部が下段に位置する支柱体の上端小径部を嵌挿し得るように拡管されると共に、ロックピンの係合孔を有することにより、支柱を構成する支柱体を軽量にすることができ、また、既存の鉄製の支柱体との互換性を持たせることができる。したがって、足場を構成する支柱体の軽量化が図れると共に、強度性の向上を図ることができるので、足場の組立及び解体の作業性の向上が図れると共に、安全性の改善が図れる。この場合、アルミニウムパイプ製支柱体の外周面に、楔受け部の取付段部溝を沿設し、この取付段部溝に、断面略コ字状に形成される楔受け部の脚片を係合させると共に、溶接によって固着することにより、溶接部の接触面積を広くできるので、楔受け部を強固に固着することができる（請求項２）。
【００５１】
（２）請求項３記載の発明によれば、ロックピンは、弾性を有する線状部材を略逆Ｖ字状に屈曲してなる基部と、この基部の両端から互いに離反する外側方向に屈曲された第１の傾斜片と、この第１の傾斜片の先端から支柱体の小径部に設けられた対向する窓孔を貫通する係止用屈曲部を介して互いに離反する内側方向に屈曲された第２の傾斜片とを具備し、支柱体を下段の支柱体の小径部に嵌挿した状態において、屈曲部が支柱体の係合孔に係合して支柱体を固定し、支柱体を第１及び第２の傾斜片の傾き方向に回転することにより、ロックピンの固定を解除して、支柱体を取り外し可能に形成するので、上記（１）に加えて更に、１本の線状部材によって軽量かつ取扱い容易なロックピンを得ることができ、また、支柱体の固定を確実にすることができると共に、取り外しを簡単にすることができる。
【００５２】
（３）請求項４記載の発明によれば、ブラケットは、上下部が肉厚に形成されるアルミニウムパイプ製のブラケット本体と、このブラケット本体の端部に装着される鉄製の楔体とを具備することにより、ブラケットの軽量化を図ることができ、また、ブラケットを支柱体に取り付ける際、あるいは取り外す際に、ブラケットをハンマで叩いてもブラケットが変形したり損傷する虞がない。したがって、上記（１）に加えて更に、足場の組立及び解体の作業性の向上が図れると共に、安全性の改善が図れる。また、ブラケットの寿命の増大が図れると共に、長期に渡って繰り返し使用を可能にすることができる。
【００５３】
（４）請求項５記載の発明によれば、手摺は、上下部が肉厚に形成されると共に、対向する両外側面に凹状取付部が形成されるアルミニウムパイプ製の手摺本体と、この手摺本体の端部に装着される鉄製の楔体とを具備することにより、手摺の軽量化を図ることができ、また、手摺を支柱体に取り付ける際、あるいは取り外す際に、手摺をハンマで叩いても手摺が変形したり損傷する虞がない。また、楔体は、手摺本体の凹状取付部に嵌合する凹状部を有する取付筒部と、この取付筒部に固着される楔部とを具備し、楔体の取付筒部及び手摺本体の凹状取付部に穿設された貫通孔を貫通するボルトにナットを締結して手摺本体に楔体を固着し、この際、ボルトの頭部及びナットを凹状部内に納めることにより、手摺からの突起部をできる限り少なくすることができる。したがって、上記（１）に加えて更に、足場の組立及び解体の作業性の向上が図れると共に、安全性の改善が図れる。また、手摺の寿命の増大が図れると共に、長期に渡って繰り返し使用を可能にすることができる。
【図面の簡単な説明】
【図１】この発明の足場の要部を示す斜視図（ａ）及びこの発明における支柱体の連結部の拡大断面図（ｂ）である。
【図２】この発明における支柱体の正面図（ａ）、側面図（ｂ）及び拡大平面図（ｃ）である。
【図３】この発明における支柱体と楔受け部との固着状態を示す斜視図である。
【図４】この発明における鉄製支柱体とアルミニウムパイプ製支柱及びジャッキベース部材を示す分解側面図である。
【図５】この発明におけるロックピンを示す斜視図である。
【図６】上記ロックピンを介して支柱体同士を嵌挿固定した状態の断面図（ａ）、ロック解除状態の断面図（ｂ）及び支柱体を取り外した状態の断面図（ｃ）である。
【図７】この発明における手摺の平面図（ａ）及び側面図（ｂ）である。
【図８】この発明における手摺本体の端部を示す側面図（ａ）、（ａ）のＩ−Ｉ線に沿う断面図（ｂ）及び（ａ）のＩＩ−ＩＩ線に沿う断面図（ｃ）である。
【図９】この発明における手摺本体と楔体との固定（装着）状態を示す断面図である。
【図１０】この発明における楔体の正面図（ａ）、側面図（ｂ）及び背面図（ｃ）である。
【図１１】この発明におけるブラケットの平面図（ａ）、側面図（ｂ）及び底面図（ｃ）である。
【図１２】この発明における足場板の平面図（ａ）及び側面図（ｂ）である。
【図１３】図１２のＩＩＩ−ＩＩＩ線に沿う拡大断面図である。
【符号の説明】
１支柱
２，２ａ〜２ｄ楔受け部
２ｅ脚片
３，３Ａ楔体
１０，１０Ａ支柱体
１１，１１Ａ小径部
１２拡管部
１３窓孔
１４係合孔
１５取付段部溝
２０ブラケット
２１ブラケット本体
２２肉厚部
３０手摺
３１手摺本体
３２肉厚部
３３凹状取付部
３４凹状部
３５取付筒部
３６楔部
３８ボルト
３８ａボルト頭部
３９ナット
４０足場板
５０ロックピン
５１基部
５２第１の傾斜片
５３係止用屈曲部
５４第２の傾斜片[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a scaffold for a low- and middle-rise detached house such as a two-story or three-story building.
[0002]
[Prior art]
Generally, when a detached house is constructed, a scaffold including a plurality of pillars that are erected on the ground at appropriate intervals, a scaffold plate that is erected between brackets mounted on each pillar, and a handrail is assembled. They do exterior work and roof work. In this case, a wedge-type scaffold for fixing a bracket, a handrail, or the like by hitting a wedge body attached to an end of a bracket or a handrail with a hammer to a substantially U-shaped wedge receiving portion fixed to a support by welding or the like is known. (For example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-5-222839 (Claims, paragraphs 0009 to 0012, FIG. 2)
Further, the column is connected by fitting a plurality of columns having a small-diameter portion which is a tenon at the upper end into the small-diameter portion, and passing through the holes provided on the side surfaces of the small-diameter portion and the lower end of the column. 2. Description of the Related Art A structure in which an engaging lock pin is detachably fixed is known (for example, see Patent Document 2).
[0004]
[Patent Document 2]
Registered Utility Model No. 2541349 (Claims for Registering Utility Model, FIGS. 1 and 2)
The lock pin is composed of a leaf spring body in which a metal plate material is formed in a substantially U-shape, and a pin member formed of a metal casting or the like attached to the legs at both ends of the leaf spring body. Further, the pin member has a vertical inclined surface for retracting the pin member when the support member is inserted and a horizontal inclined surface for retracting the pin member when the support member for inserting the small diameter portion is twisted.
[0005]
[Problems to be solved by the invention]
By the way, in this type of scaffold, the strut uses an iron strut body to give strength, and in brackets and handrails, the wedge body is hit with a hammer, fitted into the wedge receiving portion, and wedged, In order to remove it by hitting it with a hammer from the opposite direction, it is also made of an iron member in order to have strength.
[0006]
However, if all the members such as the pillars, brackets, and handrails that constitute the scaffold are made of iron, the weight of the members increases, so that not only labor is required for transporting the members particularly to high places, but also assembling and dismantling work of the scaffolds. However, there is a problem that it is troublesome and involves risks.
[0007]
As a method of solving this problem, in order to reduce the weight of the constituent members of the scaffold, it is conceivable that the constituent members are formed of aluminum members. In order to attach and remove the bracket and handrail, it is necessary to firmly attach the wedge receiving portion, and it is necessary to give the bracket and the handrail itself strength. Therefore, there is a trade-off between weight reduction and strength.
[0008]
The present invention has been made in view of the above circumstances, and provides a scaffold for a detached house in which constituent members are lightweight and strong so that workability and safety of assembly and disassembly can be improved. The purpose is to:
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a scaffold for a detached house according to the present invention includes a plurality of columns erected on the ground at appropriate intervals, and a wedge body wedge-fitted to a wedge receiving portion mounted on each column. A bracket having a bracket, a scaffold plate removably mounted between the brackets, and a scaffold for a detached house comprising a handrail having a wedge body wedge-fitted to a wedge receiving portion of each of the columns, The strut is constituted by a plurality of struts having substantially the same outer diameter, which are removably fitted and fixed via elastically deformable lock pins, and at least one strut is formed by an aluminum pipe. The pillar body made of aluminum pipe is expanded so that a lower end portion can be fitted with a small-diameter upper end portion of a pillar body located at a lower stage, and has an engagement hole for the lock pin. Formed on the outer peripheral surface with a substantially U-shaped cross section Made by fixing by welding the leg of the serial wedge receiving portion, characterized in that (claim 1). Here, aluminum means including aluminum or an aluminum alloy.
[0010]
In the invention according to claim 1, a mounting step groove of a wedge receiving portion is provided along an outer peripheral surface of the support body, and a leg piece of the wedge receiving portion is engaged with the mounting step groove, and welding is performed. It is preferable to fix by (claim 2).
[0011]
According to a third aspect of the present invention, in the scaffold for a detached house according to the first aspect, the lock pin is formed by bending a linear member having elasticity into a substantially inverted V-shape, and from both ends of the base. A first inclined piece bent outwardly away from each other and a locking bent portion penetrating from an end of the first inclined piece through an opposing window hole provided in a small diameter portion of the support body. A second inclined piece that is bent inward and separates from each other, and in a state where the column is inserted into the small diameter portion of the lower column, the bent portion is engaged with the engagement hole of the column. By fixing the support and rotating the support in the direction of inclination of the first and second inclined pieces, the fixing of the lock pin is released and the support is detachably formed. Features.
[0012]
In the present invention, the bracket preferably includes an aluminum pipe bracket body having upper and lower portions formed to be thick, and an iron wedge body attached to an end of the bracket body. ).
[0013]
Also, the handrail is made of an aluminum pipe having upper and lower portions formed to be thick and having concave attachment portions formed on opposite outer surfaces, and an iron-made handrail attached to an end of the handrail body. It is preferable to include a wedge body, and the wedge body includes a mounting cylinder portion having a concave portion that fits into the concave mounting portion of the handrail main body, and a wedge portion fixed to the mounting cylinder portion. Then, a nut is fastened to a bolt passing through a through hole formed in the mounting cylinder portion of the wedge body and the concave mounting portion of the handrail body to fix the wedge body to the handrail body. It is preferable that the nut be accommodated in the concave portion (claim 5).
[0014]
According to the first aspect of the present invention, the column is constituted by a plurality of columns having substantially the same outer diameter and detachably fitted and fixed via the elastically deformable lock pin, and at least one column. One pillar body is formed by an aluminum pipe, and this aluminum pipe pillar body is expanded so that a lower end portion can be fitted with a small diameter portion at an upper end of a pillar body located at a lower stage, and an engagement hole of a lock pin is formed. By having such a structure, it is possible to reduce the weight of the strut body constituting the strut, and to make the strut body compatible with the existing iron strut body. In this case, the mounting step groove of the wedge receiving portion is provided along the outer peripheral surface of the aluminum pipe support body, and the leg of the wedge receiving portion formed in a substantially U-shaped cross section is engaged with the mounting step groove. In addition, the wedge receiving portion can be fixed by increasing the contact area of the welded portion by fixing by welding.
[0015]
According to the third aspect of the present invention, the lock pin includes a base formed by bending a linear member having elasticity in a substantially inverted V-shape, and a first bent outwardly separated from both ends of the base. Of the first inclined piece and a second inwardly bent away from each other via a locking bent portion penetrating from an end of the first inclined piece through an opposite window hole provided in the small diameter portion of the support body. With the inclined piece, in a state where the support body is inserted into the small diameter portion of the lower support body, the bent portion engages with the engaging hole of the support body to fix the support body, and the support body is first and second. By rotating the second inclined piece in the inclination direction to release the fixing of the lock pin and form the support body detachably, a lock pin that is lightweight and easy to handle with one linear member is obtained. Can be secured, and the column can be securely fixed. It is possible to simplify the.
[0016]
According to the fourth aspect of the present invention, the bracket includes the aluminum pipe bracket body having the upper and lower portions formed to be thick, and the iron wedge body attached to the end of the bracket body. The weight of the bracket can be reduced, and there is no possibility that the bracket will be deformed or damaged even if the bracket is hit with a hammer when the bracket is attached to or removed from the column.
[0017]
According to the fifth aspect of the present invention, the handrail has an aluminum pipe handrail body in which upper and lower portions are formed to be thick and concave mounting portions are formed on opposite outer surfaces, and an end of the handrail body. Since it has an iron wedge body attached to the part, it is possible to reduce the weight of the handrail, and when attaching or removing the handrail from the support, the handrail is deformed even if the handrail is hit with a hammer No drip or damage. The wedge includes a mounting cylinder having a concave portion fitted into the concave mounting portion of the handrail body, and a wedge fixed to the mounting cylinder. A nut is fastened to a bolt penetrating a through hole formed in the concave mounting portion, and a wedge body is fixed to the handrail main body. At this time, the head from the bolt and the nut are housed in the concave portion, thereby projecting from the handrail. The number of parts can be reduced as much as possible.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0019]
FIG. 1 is a perspective view (a) showing a main part of a scaffold for a detached house according to the present invention, and an enlarged cross-sectional view (b) showing a connecting portion of a support body constituting the scaffold, that is, a fitting / fixing portion.
[0020]
The scaffold includes a bracket 20 having a plurality of pillars 1 erected on the ground at appropriate intervals, a wedge body 3 attached to a wedge receiving part 2 mounted on each pillar 1, and a bracket 20. And a handrail 30 having a wedge body 3 which is wedge-fitted to the wedge receiving portion 2 of each column 1.
[0021]
The column 1 is composed of a plurality of columns 10 having substantially the same outer diameter and detachably fitted and fixed via an elastically deformable lock pin 50 to be described later, and at least one column. Reference numeral 10 is formed of an aluminum pipe. In this case, for example, the lowermost column 10A connected to the jack base member 4 installed on the ground is formed of an iron pipe member, and all columns 10 other than the column 10A are made of aluminum pipe. Alternatively, a mixture of an iron pipe and an aluminum pipe can be used. In addition, it is also possible to make all the pillars 10 made of aluminum pipes including the lowermost pillar connected to the jack base member 4.
[0022]
As shown in FIG. 2, an aluminum pipe support 10 (hereinafter referred to as support 10) has a small-diameter portion 11 extending at an upper end and an upper end of a support 10 (10A) located at a lower end at a lower end. It has an expanded portion 12 into which the small diameter portion 11 can be inserted, and has an engaging hole 14 for a lock pin 50 on the opposite side surface of the expanded portion 12, and at four opposing outer peripheral surfaces of the support body 10, A mounting step groove 15 having a substantially right-angled cross section for mounting the wedge receiving portion 2 (2a to 2d) is provided along the longitudinal direction of the support body 10. The leg pieces 2e of the wedge receiving portions 2 (2a to 2d) formed in a substantially U-shaped cross section are engaged with the mounting step grooves 15 which are appropriately spaced in the support body 10, and are joined together. The part is fixed by welding W (see FIG. 3). Therefore, the leg 2e of the wedge receiving portion 2 (2a to 2d) comes into contact with the bottom surface and the side surface of the mounting step groove 15, so that the contact area of the welded portion is widened, and the wedge receiving portion 2 (2a to 2d) is firm. To be fixed.
[0023]
In this case, four wedge receiving portions 2 (2a to 2d) are fixed to the vicinity, two opposing wedge receiving portions 2a and 2b are fixed at the same height position, and the remaining two wedge receiving portions 2a and 2b are fixed. The wedge receiving portions 2c and 2d are fixed to orthogonally opposed positions on the lower side near the wedge receiving portions 2a and 2b (see FIGS. 2 and 3).
[0024]
Further, the support body 10 inserts a small diameter portion 11 formed of an aluminum pipe into an upper end opening of a support body base 10a formed of an aluminum pipe having a mounting step groove 15 formed simultaneously by extrusion molding, The through hole 10b provided on the side surface of the upper end of the support base 10a is welded W to fix the support base 10a and the small diameter portion 11 (see FIG. 4). The lower end of the support base 10a is expanded to form the expanded portion 12. The column 10 thus formed is prepared in several types of different lengths, for example, three types of 3 m 80 cm, 1 m 90 cm, and 95 cm, and can be combined according to the purpose.
[0025]
In this case, for example, as shown in FIG. 4, the outer diameter of the column base 10a is formed to be 48.6 mm, which is the same as the outer diameter of the iron column 10A. The inner diameter of the support base 10a is formed to be 43 mm. Therefore, the thickness of the support base 10a is formed as thick as 2.8 mm, and the strength of the support 10 is enhanced. The outer diameter of the small diameter portion 11 is 42.7 mm, the outer diameter of the expanded portion 12 is 49.6 mm, and the inner diameter is 44 mm. On the other hand, the outer diameter of the iron support 10A is formed to 48.6 mm similarly to the outer diameter of the support 10, and the inner diameter is formed to 44 mm similarly to the inner diameter of the expanded portion 12, and the small diameter portion 11A of the iron support 10A is formed. The outer diameter is 42.7 mm, similar to the small diameter portion 11 of the support body 10. The outer diameter of the jack base member 4 is 42.2 mm. The outer diameters and the like of the pillars 10 and 10A are merely examples, and may be arbitrary as long as they are substantially the same.
[0026]
As described above, the outer diameter of the column 10 and the outer diameter of the iron column 10A and the outer diameter of the small-diameter portion 11 are made the same, and the inner diameter of the expanded portion 12 and the inner diameter of the iron column 10A are made the same. Thereby, the column 10 and the iron column 10A can be selectively used with compatibility. That is, the small-diameter portion 11A of the iron support 10A is fitted into the expanded portion 12 of the support 10 or the small-diameter portion 11 of the support 10 is fitted into the lower end of the iron support 10A. The support body 10A can be appropriately selected and used. Therefore, the existing iron support 10A and the support 10 can be handled in the same manner, so that inventory management and transportation become convenient.
[0027]
As shown in FIG. 5, the lock pin 50 has a base 51 formed by bending a linear member having elasticity, for example, a spring steel wire in a substantially inverted V-shape, and an outward direction separated from both ends of the base 51. A first inclined piece 52 bent to a right angle, and a stopper for penetrating from an end of the first inclined piece 52 through an opposed window hole 13 provided in the small diameter portion 11 (11A) of the support body 10 (10A). A second inclined piece 54 is bent inward and separated from each other via the bent portion 53. The lock pin 50 thus formed is pressed against the elastic force to bring both the first and second inclined pieces 52 and 54 closer to each other, so that the inside of the small-diameter portion 11 (11A) of the support body 10 (10A). After that, the pressing force is released, and the bent portion 53 is set to protrude outward from the window hole 13 provided in the small diameter portion 11 (11A). Then, as shown in FIG. 6, in a state where the column 10 (10A) is inserted into the small diameter portion 11 (11A) of the lower column 10 (10A), the bent portion 53 engages with the column 10 (10A). The column 10 (10A) is fixed by engaging with the hole 14. Further, by rotating (twisting) the column 10 (10A) in the direction in which the first and second inclined pieces 52, 54 are tilted, the lock pin 50 is unlocked, and the column 10 (10A) is removed. Can be made possible.
[0028]
As described above, since the lock pin 50 can be formed of one linear member, for example, a wire made of spring steel, as in the related art, a leaf spring body in which a metal plate material is formed in a substantially U-shape, The material can be reduced as compared with a lock pin composed of a pin member formed of a metal casting or the like attached to the legs at both ends of the leaf spring body, and the molding can be easily performed. In addition to being easy to handle, the columns 10 (10A) can be securely fixed to each other and can be easily removed.
[0029]
As shown in FIGS. 7 and 8, the handrail 30 has thickened portions 32 formed at upper and lower portions, and concave mounting portions 33 which are open to the end and extend in the axial direction on both opposed outer surfaces. And a handrail body 31 made of an aluminum pipe formed with an iron pipe, and a wedge body 3 made of iron, for example, stainless steel, which is attached to an end of the handrail body 31.
[0030]
In this case, as shown in FIG. 10, the wedge body 3 is fixed to the mounting cylinder 35 having a concave portion 34 that fits into the concave mounting portion 33 of the handrail main body 31 by, for example, welding. And a wedge portion 36.
[0031]
In order to attach the wedge body 3 formed as described above to the handrail main body 31, as shown in FIG. 9, the wedge body 3 penetrates through the through-hole 37 formed in the mounting cylindrical portion 35 and the concave mounting portion 33 of the handrail main body 31. The nut 39 is fastened to the bolt 38 to be fixed, and the wedge body 3 is fixed to the handrail body 31. At this time, the head 38a of the bolt 38 and the nut 39 are accommodated in the concave portion 34 so as to minimize the protruding portion to the outside. Therefore, it is possible to prevent the worker from inadvertently hooking the hand or the clothes on the handrail 30.
[0032]
As shown in FIG. 11, the bracket 20 includes a bracket body 21 made of an aluminum pipe having thick portions 22 formed at upper and lower portions, and wedges made of iron, for example, stainless steel, which are attached to both ends of the bracket body 21. An aluminum plate brace 24 having a body 3A and a V-shaped abutting portion 23 having a distal end fixed to the lower surface of the bracket body 21 by welding or the like and having a V-shaped abutting portion 23 abutting on a side surface of the support body 10 (10A) at a base end; An aluminum reinforcing plate 25 fixed to the base end side of the brace 24 and the lower surface of the bracket main body 21 by welding or the like, and four cross sections fixed to four opposing portions of the bracket main body 21 by welding or the like, respectively. A substantially U-shaped wedge receiving portion 2A is provided. A wedge receiving portion 2A having a substantially U-shaped cross section is fixed to two opposing portions on both sides of the bracket body 21 by welding or the like.
[0033]
In this case, the wedge body 3A is formed of a mounting cylinder 35 fitted to the bracket body 21 and a wedge 36 fixed to the mounting cylinder 35 by, for example, welding. To attach the wedge body 3A to the bracket main body 21, a nut 39 is fastened to a bolt 38 passing through a mounting cylindrical portion 35 and a through hole (not shown) formed in the bracket main body 21 to attach the wedge body 3A to the bracket main body 21. The wedge body 3A is fixed. The wedge body 3A is mounted on both ends of the bracket main body 21 and is wedge-fitted to the opposing wedge receiving part 2 fixed to the opposing column 1 {specifically, the column 10 (10A)}. Thereby, the bracket 20 can be firmly attached. Note that the wedge body 3A does not necessarily need to be mounted on both ends of the bracket main body 21, but may be mounted on at least the ends located on the base end side of the brace 24.
[0034]
On the other hand, as shown in FIGS. 12 and 13, the scaffold plate 40 has an uneven tread plate portion 41 having a plurality of (for example, seven) (rows) protrusions 41 a and 41 b extending in the longitudinal direction. A pair of reinforcing side wall pieces 42 having a substantially L-shaped cross-section hanging down from both ends to the lower surface, and hollow reinforcing parts 43 having two parallel rows and having substantially rectangular cross-sections hanging in parallel on both sides of a middle portion of the lower surface of the tread plate portion 41 are provided. It is formed of an extruded aluminum member. A large number of non-slip drain holes 44a and 44b are formed at appropriate intervals in the convex portions 41a and 41b of the tread plate portion 41 of the scaffold plate 40. In this case, three rows of convex portions 41a are formed between the hollow reinforcing portions 43, and two rows of convex portions 41b wider than the convex portions 41a are formed outside the hollow reinforcing portions 43. Substantially square drainage holes 44a are drilled at a narrow pitch interval at 41a, and substantially rectangular drainage holes 44b having a long longitudinal direction are drilled at a narrow pitch interval at the convex portion 41b. . Therefore, the tread plate portion 41 of the scaffold plate 40 is formed with the drain holes 44a and 44b having a large opening ratio (for example, 37%), so that it is not easily slipped, and the surface is hardly stained, and furthermore, the building walls are stained. It is possible to prevent raindrops from bouncing off.
[0035]
An aluminum closing plate 45 is fixed to both ends of the scaffold plate 40 in the longitudinal direction by welding or the like. A stainless steel hook fitting 46 protruding outward in the longitudinal direction is fixed to one side of the scaffold plate 40 via the closing plate 45 by bolts 47 and nuts 48. A wedge 3B made of stainless steel inserted into a wedge receiving portion 2A provided on the bracket 20 is fixed to the other side of the both ends in the longitudinal direction of the scaffold plate 40 by welding or the like. A drain hole 49 is provided in a portion of the closing plate 45 for closing the hollow reinforcing portion 43.
[0036]
Next, an assembly procedure of an example of the scaffold according to the present invention will be described. First, the jack base member 4 is connected to the lowermost column, for example, the iron column 10A. Next, the lock pin 50 is attached to the small diameter portion 11A of the support 10A. To attach the lock pin 50, the pressing force is released after the first and second inclined pieces 52 and 54 are pressed close to each other by being pressed against the elastic force and inserted into the small-diameter portion 11A of the support 10A. Then, the bent portion 53 is set so as to protrude outward from the window hole 13 provided in the small diameter portion 11A. Note that the lock pin 50 may be attached to the small diameter portion 11A of the support 10A in advance. In this state, the support 10A is erected, the jack base member 4 is fixed with an anchor (not shown), and the plurality of supports 10A are installed at appropriate intervals.
[0037]
Next, the bracket 20 is attached to the support 10A. At this time, the bracket 20 is mounted by hitting the wedge 3A of the bracket 20 with a hammer to wedge the wedge receiving portion 2 fixed to the support 10A. Similarly, the bracket 20 is attached to each support 10A.
[0038]
Next, the scaffold plate 40 is erected between the brackets 20 attached to the adjacent columns 10A. At this time, the wedge body 3B provided on the scaffold plate 40 is hit with a hammer to wedge the wedge receiving portion 2 fixed to the bracket 20, and the hook fitting 46 provided on the scaffold plate 40 is hooked on the bracket body 21. Thus, the scaffold plate 40 can be erected firmly.
[0039]
Next, the handrail 30 is attached to the adjacent column 10A using the erected scaffold plate 40. At this time, the handrail 30 can be firmly attached by hitting the wedge body 3 provided on the handrail 30 with a hammer to wedge the wedge body 2 on the wedge receiving portion 2 fixed to the support body 10A.
[0040]
In addition, the second-stage support body, for example, the aluminum pipe support body 10 is connected to the tip small-diameter portion 11A of the support body 10A using the scaffold plate 40. At this time, when the small-diameter portion 11A is inserted into the expanded tube portion 12 at the lower end of the support 10, the bent portion 53 of the lock pin 50 engages with the engaging hole 14 of the support 10, and the support 10 is fixed. You. Thus, the support body 10 is prevented from rotating and is not accidentally removed. In this way, the expanded tube portion 12 is inserted into the small-diameter portion 11A of each of the column members 10A to connect the column members 10 together.
[0041]
Next, the bracket 20 is attached to the support body 10 in the same manner as described above. That is, the bracket 20 is attached by hitting the wedge 3A of the bracket 20 with a hammer to wedge the wedge 3A with the hammer on the wedge receiving portion 2 fixed to the support body 10. Similarly, the bracket 20 is attached to each of the columns 10.
[0042]
Next, the scaffold 40 is erected between the brackets 20 attached to the adjacent columns 10 in the same manner as described above. That is, the wedge body 3B provided on the scaffold plate 40 is hit with a hammer to wedge the wedge receiving portion 2 fixed to the bracket 20, and the hook fitting 46 provided on the scaffold plate 40 is hooked on the bracket body 21. The scaffold plate 40 is erected firmly.
[0043]
The handrail 30 is attached to the adjacent column 10 using the installed scaffold plate 40 in the same manner as described above. That is, the handrail 30 can be firmly attached by hitting the wedge body 3 provided on the handrail 30 with a hammer to wedge the wedge receiving part 2 fixed to the support body 10.
[0044]
Similarly, by using the scaffold plate 40, the support members 10 are fitted and fixed to the small-diameter portions 11 of the support members 10 via the lock pins 50, and the brackets 20 are attached to the support members 10, respectively. A scaffold plate 40 is erected, and a handrail 30 is attached between the adjacent columns 10 to assemble a scaffold having a predetermined height.
[0045]
In the scaffold assembled as described above, the pillar 10A made of aluminum is used above the pillar 10A made of iron, and the pillar 10 made of aluminum pipe is used above the pillar. The bracket 20 has a bracket body 21 made of aluminum. However, since the handrail 30 also has the handrail main body 31 made of an aluminum pipe, the scaffolding components can be reduced in weight, and work at high places can be performed easily and safely. Moreover, since the support body 10 is also formed to be thick, strength can be obtained. In the bracket 20 and the handrail 30, thick portions 22, 32 are formed in upper and lower portions of the bracket body 21 and the handrail body 31, and the wedge bodies 3, 3A made of stainless steel are attached. At this time, there is no risk of deformation even if the ball is hit with a hammer, and sufficient strength can be obtained. Therefore, the life can be increased and the battery can be used repeatedly. Further, since the handrail 30 contains the head 38a and the nut 39 of the bolt 38 for connecting (fastening) the handrail main body 31 and the wedge body 3 in the concave portion 34, the protrusion from the handrail 30 is minimized. Therefore, there is no need for the worker to carelessly hook his hands or clothes, and the work can be made safe.
[0046]
When the scaffold is dismantled, in the handrail 30, the scaffold plate 40, and the bracket 20, the lower surface of the mounting cylindrical portion 35 of the wedge body 3, 3A is hit with a hammer, and the wedge bodies 3, 3A, 3B and the wedge receiving section 2 ( 2A), the handrail 30, the scaffold 40, and the bracket 20 are sequentially removed. When the column 1 is disassembled, the column 10 (10A) is rotated (twisted) in the direction in which the first and second inclined pieces 52 and 54 of the lock pin 50 are tilted, as described above. The fixing of the pin 50 is released, and the support body 10 (10A) is removed.
[0047]
Even when the scaffold is dismantled, the support body 10 is made of aluminum, the bracket 20 has the bracket body 21 made of aluminum, and the handrail 30 also has the handrail body 31 made of an aluminum pipe. Can be performed easily and safely. In the bracket 20 and the handrail 30, thick portions 22, 32 are formed at upper and lower portions of the bracket body 21 and the handrail body 31, and the wedge bodies 3, 3A made of stainless steel are attached. In this case, there is no possibility of deformation even if the ball is hit with a hammer, and sufficient strength can be obtained. Therefore, the life can be increased and the battery can be used repeatedly.
[0048]
In the above description, the case where the iron column 10A is positioned at the lowermost stage and the aluminum column 10 is positioned above the iron column 10A is described. However, the iron column 10A and the aluminum pipe column 10 are positioned above the column. Are interchangeable, and the strut 10 is formed thick and has strength, so that the strut 1 can be appropriately selected.
[0049]
【The invention's effect】
As described above, according to the present invention, since the configuration is as described above, the following excellent effects can be obtained.
[0050]
(1) According to the first aspect of the present invention, the column is constituted by a plurality of columns having substantially the same outer diameter and detachably fitted and fixed via the elastically deformable lock pin. At least one of the pillars is formed of an aluminum pipe, and the aluminum pipe pillar is expanded so that the lower end can be fitted with the upper end small-diameter portion of the pillar located at the lower level, and the lock pin is engaged. By having the mating holes, it is possible to reduce the weight of the strut constituting the strut, and to make the strut compatible with the existing iron strut. Therefore, the strut constituting the scaffold can be reduced in weight and the strength can be improved, so that the workability of assembling and disassembling the scaffold can be improved, and the safety can be improved. In this case, the mounting step groove of the wedge receiving portion is provided along the outer peripheral surface of the aluminum pipe support body, and the leg of the wedge receiving portion formed in a substantially U-shaped cross section is engaged with the mounting step groove. By combining and fixing by welding, the contact area of the welded portion can be increased, so that the wedge receiving portion can be firmly fixed (claim 2).
[0051]
(2) According to the third aspect of the invention, the lock pin is formed by bending a linear member having elasticity into a substantially inverted V-shape, and is bent outward from the both ends of the base. The first inclined piece and the first inclined piece are bent inwardly away from each other via a locking bent portion penetrating an opposite window hole provided in a small-diameter portion of the support from the tip of the first inclined piece. A second inclined piece, and in a state where the support is inserted into the small-diameter portion of the lower support, the bent portion is engaged with the engagement hole of the support to fix the support, and the support is fixed. By rotating the first and second inclined pieces in the inclination directions of the first and second inclined pieces to release the fixing of the lock pin and to form the support body detachable, one linear form is added to the above (1). The member makes it possible to obtain a lightweight and easy-to-handle lock pin, and to secure the support Rukoto it is, it is possible to simplify the removal.
[0052]
(3) According to the invention described in claim 4, the bracket includes an aluminum pipe bracket body having upper and lower portions formed to be thick, and an iron wedge body attached to an end of the bracket body. By doing so, the weight of the bracket can be reduced, and there is no risk that the bracket will be deformed or damaged even if the bracket is hit with a hammer when the bracket is attached to or removed from the column. Therefore, in addition to the above (1), the workability of assembling and disassembling the scaffold can be improved, and the safety can be improved. In addition, the life of the bracket can be increased, and the bracket can be repeatedly used for a long time.
[0053]
(4) According to the fifth aspect of the present invention, the handrail is made of an aluminum pipe, in which the upper and lower portions are formed to be thick, and the concave attachment portions are formed on both opposing outer surfaces, and the handrail. By having an iron wedge attached to the end of the main body, it is possible to reduce the weight of the handrail, and when attaching the handrail to the support or removing the handrail, hit the handrail with a hammer. Also, there is no possibility that the handrail is deformed or damaged. The wedge includes a mounting cylinder having a concave portion fitted into the concave mounting portion of the handrail body, and a wedge fixed to the mounting cylinder. A nut is fastened to a bolt passing through a through hole formed in the concave mounting portion, and a wedge body is fixed to the handrail main body. At this time, a protrusion from the handrail is provided by storing the head of the bolt and the nut in the concave portion. The number of parts can be reduced as much as possible. Therefore, in addition to the above (1), workability of assembling and disassembling the scaffold can be improved, and safety can be improved. In addition, the life of the handrail can be increased, and the handrail can be repeatedly used for a long time.
[Brief description of the drawings]
FIG. 1A is a perspective view showing a main part of a scaffold of the present invention, and FIG. 1B is an enlarged cross-sectional view of a connecting portion of a support body in the present invention.
FIG. 2 is a front view (a), a side view (b), and an enlarged plan view (c) of a column in the present invention.
FIG. 3 is a perspective view showing a fixed state of a support body and a wedge receiving portion in the present invention.
FIG. 4 is an exploded side view showing an iron support, an aluminum pipe support, and a jack base member according to the present invention.
FIG. 5 is a perspective view showing a lock pin according to the present invention.
FIGS. 6A and 6B are a cross-sectional view showing a state in which the columns are inserted and fixed via the lock pins, a cross-sectional view showing an unlocked state, and a cross-sectional view showing a state in which the columns are removed. .
FIG. 7 is a plan view (a) and a side view (b) of a handrail according to the present invention.
8A is a side view showing an end portion of the handrail main body according to the present invention, FIG. 8B is a cross-sectional view taken along line II of FIG. 7A, and FIG. 8C is a cross-sectional view taken along line II-II of FIG. ).
FIG. 9 is a sectional view showing a fixed (mounted) state of the handrail body and the wedge body according to the present invention.
FIG. 10 is a front view (a), a side view (b), and a rear view (c) of a wedge body according to the present invention.
FIG. 11 is a plan view (a), a side view (b), and a bottom view (c) of the bracket according to the present invention.
FIG. 12 is a plan view (a) and a side view (b) of a scaffold according to the present invention.
FIG. 13 is an enlarged sectional view taken along line III-III of FIG.
[Explanation of symbols]
1 prop
2,2a-2d wedge receiving part
2e leg piece
3,3A wedge
10,10A prop body
11, 11A small diameter part
12 Expansion section
13 windows
14 Engagement hole
15 Mounting step groove
20 bracket
21 Bracket body
22 Thick part
30 Handrail
31 Handrail body
32 Thick part
33 concave mounting part
34 concave part
35 Mounting tube
36 Wedge
38 volts
38a bolt head
39 nuts
40 scaffolding board
50 Lock Pin
51 base
52 first inclined piece
53 Bending part for locking
54 Second inclined piece

Claims

A plurality of struts erected on the ground at appropriate intervals, a bracket having a wedge body attached to a wedge receiving portion mounted on each strut, and a scaffold plate removably erected between the brackets And a handrail having a wedge body that is wedge-fitted to the wedge receiving portion of each of the columns,
The above-mentioned strut is constituted by a plurality of strut bodies which are removably fitted and fixed via an elastically deformable lock pin and have substantially the same outer diameter, and at least one strut body is formed by an aluminum pipe. And
The aluminum pipe support body is expanded so that the lower end can be fitted with the upper end small diameter part of the support body located at the lower stage, has an engagement hole for the lock pin, and has an outer periphery of the support body. A scaffold for a detached house, wherein a leg of the wedge receiving portion formed in a substantially U-shaped cross section is fixed to a surface by welding.

The scaffold for a detached house according to claim 1,
A mounting step groove of the wedge receiving portion is provided along the outer peripheral surface of the support body, and a leg of the wedge receiving portion having a substantially U-shaped cross section is engaged with the mounting step groove, and welding is performed. A scaffold for a detached house, wherein the scaffold is fixed by:

The scaffold for a detached house according to claim 1,
The lock pin includes a base formed by bending a linear member having elasticity in a substantially inverted V-shape, a first inclined piece bent in an outward direction away from both ends of the base, A second inclined piece bent inward away from each other via a locking bent portion penetrating an opposing window hole provided in the small diameter portion of the support from the tip of the inclined piece,
In a state where the support is inserted into the small diameter portion of the lower support, the bent portion engages with the engaging hole of the support to fix the support, and fixes the support to the first and second inclined pieces. A scaffold for a detached house, characterized in that the support pin is detachably formed by rotating the lock pin in a tilt direction to release the lock pin.

The scaffold for a detached house according to claim 1,
The detached house, comprising: a bracket body made of an aluminum pipe having upper and lower portions formed to be thick; and an iron wedge body attached to an end of the bracket body. For scaffolding.

The scaffold for a detached house according to claim 1,
The handrail has an aluminum pipe handrail body having upper and lower portions formed with thick walls and concave attachment portions formed on opposite outer surfaces, and an iron wedge body attached to an end of the handrail body. And comprising
The wedge body includes a mounting cylinder having a concave portion that fits into the concave mounting portion of the handrail main body, and a wedge fixed to the mounting cylinder.
A nut is fastened to a bolt penetrating a through hole formed in the mounting cylinder portion of the wedge body and the concave mounting portion of the handrail body, and the wedge body is fixed to the handrail body. A scaffold for a detached house, wherein the scaffold is housed in the concave portion.