JP3100574B2 - Suspended scaffold and its erection method - Google Patents

Suspended scaffold and its erection method

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Publication number
JP3100574B2
JP3100574B2 JP10220344A JP22034498A JP3100574B2 JP 3100574 B2 JP3100574 B2 JP 3100574B2 JP 10220344 A JP10220344 A JP 10220344A JP 22034498 A JP22034498 A JP 22034498A JP 3100574 B2 JP3100574 B2 JP 3100574B2
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JP
Japan
Prior art keywords
scaffold
rods
truss
rod
suspension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP10220344A
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Japanese (ja)
Other versions
JP2000054619A (en
Inventor
忠 中島
信雄 永田
Original Assignee
長谷川建設株式会社
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Filing date
Publication date
Application filed by 長谷川建設株式会社 filed Critical 長谷川建設株式会社
Priority to JP10220344A priority Critical patent/JP3100574B2/en
Publication of JP2000054619A publication Critical patent/JP2000054619A/en
Application granted granted Critical
Publication of JP3100574B2 publication Critical patent/JP3100574B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】本発明は、高架橋作業に使用
する特定の吊り足場及びその吊り足場を高所に設置する
方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a specific suspended scaffold used for viaduct work and a method for installing the suspended scaffold at a high place.
【0002】[0002]
【従来の技術】従来の高所作業に使用する足場の架設方
法として、地上にて一定の床面積を有する枠組足場を組
立てた後、その枠組足場をクレーン車等の吊上手段によ
り吊り上げて橋脚の所定位置に吊り下げる施工方法が、
特開平9−273120号に開示されている。また、特
公平3−12172号公報には、ホイスト設置のための
作業用足場を地上から上下移動させてホイスト用機材を
高所に運搬することにより、まずホイスト用レールを組
立て、ついで、地上にて組み立てた小型の分割足場を先
に設置したホイストにより吊り上げて主桁に固定し、同
様の作業を繰り返すことにより、多数の分割足場を横及
び縦方向に接続して大きな足場を組み立てる架設方法が
公知である。そこに開示された分割足場は、平行に配置
した単管のビームパイプ上に補助パイプを直交状に並べ
てその交差部を別途用意したクランプ金具で固定し、そ
の上に足場板を敷設した構造とされている。
2. Description of the Related Art As a conventional method of erection of a scaffold used for high-altitude work, after assembling a framed scaffold having a fixed floor area on the ground, the framed scaffold is lifted up by a lifting means such as a crane truck or the like. The construction method of hanging at the predetermined position of
It is disclosed in JP-A-9-273120. Further, Japanese Patent Publication No. 3-12172 discloses that a hoist rail is assembled first by moving a working scaffold for hoist installation up and down from the ground and transporting the hoist equipment to a high place, and then to the ground. The small split scaffold assembled by assembling is lifted by the hoist installed first and fixed to the main girder, and by repeating the same work, a large number of split scaffolds are connected in the horizontal and vertical directions to build a large scaffold. It is known. The split scaffold disclosed therein has a structure in which auxiliary pipes are arranged orthogonally on a single-beam beam pipe arranged in parallel, and their intersections are fixed with separately prepared clamps, and a scaffold plate is laid thereon. Have been.
【0003】[0003]
【発明が解決しようとする課題】上記した従来の足場構
造物においては、単管のビームパイプ上に補助パイプを
直交状に並べて足場板を敷設することにより薄い床状に
構成されていることから、曲げに対する剛性が小さい。
しかして、分割足場を主桁に吊りチェーンによって吊り
下げる場合には、安全性の観点から吊り点の間隔を小さ
くして足場全体の撓み量を少なくする配慮をしなければ
ならない。しかして、架設後の足場内には沢山の吊りチ
ェーンが随所に張られている結果、橋梁の建造や補修等
の作業時に、それらの吊りチェーンが作業者の通行や資
材の運搬の支障となりやすい。また、足場の組立てにつ
いては、単管のビームパイプに対して単管の補助パイプ
を結合部ごとに別途用意したクランプ金具により1箇所
ずつ固定することにより行われるが、その作業は大変手
間のかかるものである。
In the above-mentioned conventional scaffold structure, the auxiliary pipe is arranged orthogonally on a single beam pipe and a scaffold plate is laid to form a thin floor. And low rigidity against bending.
Therefore, when the divided scaffold is suspended from the main girder by a suspension chain, consideration must be given to reducing the distance between the suspension points and the amount of deflection of the entire scaffold from the viewpoint of safety. However, since many suspension chains are stretched everywhere in the scaffold after construction, these suspension chains are likely to hinder the passage of workers and the transport of materials during work such as building and repairing bridges. . Also, assembling the scaffold is performed by fixing a single auxiliary pipe to a single beam pipe by using a clamp fitting separately prepared for each joint, one place at a time. Things.
【0004】この発明の目的は、吊り足場の剛性が高
く、組立て・解体作業を容易とした吊り足場、及び安全
で迅速に吊り足場を架設することが可能な方法を提供す
ることにある。
[0004] It is an object of the present invention to provide a suspension scaffold which has high rigidity and facilitates assembling and disassembling operations, and a method capable of safely and quickly constructing the suspension scaffold.
【0005】[0005]
【課題を解決するための手段】前記目的を達成するため
に請求項1に記載の吊り足場の発明は、一定間隔をおい
て配置された上弦部材と下弦部材を補強部材により連結
して一体化された長尺のビーム本体の両端部に継ぎ板を
備えた複数本のトラス状ビームと、杆部材の両端にクラ
ンプ金具を設けた複数本の第1連結杆と、杆部材の両端
の上下位置に下向きのフック部とクランプ金具を設けた
複数本の第2連結杆とを設け、前記トラス状ビームを平
行に配置してそれらの下弦部材に前記第1連結杆をクラ
ンプ金具により夫々連結し、前記上弦部材に前記第2連
結杆のフック部を夫々係合させると共にそのクランプ金
具を前記下弦部材に嵌めて同第2連結杆をビーム本体に
夫々固定し、上記第2連結杆上に足場板を列設すると共
にその足場板上に防護シートが敷設された足場を設け、
その足場の一方向の一端若しくは両端部に、矩形状フレ
ームの内面に薄板材が張設された遮蔽壁を傾斜若しくは
直立させて固定したことを特徴とするものである。
According to the first aspect of the present invention, there is provided a suspension scaffold according to the first aspect of the present invention, in which an upper chord member and a lower chord member arranged at regular intervals are connected by a reinforcing member and integrated. Truss-shaped beams provided with joint plates at both ends of the elongated beam main body, a plurality of first connecting rods provided with clamps at both ends of the rod member, and upper and lower positions of both ends of the rod member A plurality of second connecting rods provided with downward hook portions and clamp fittings, the truss-shaped beams are arranged in parallel, and the first connecting rods are connected to their lower chord members by clamp fittings, respectively. A hook portion of the second connecting rod is engaged with the upper chord member, and a clamp fitting is fitted to the lower chord member to fix the second connecting rod to the beam main body, respectively, and a scaffold plate is provided on the second connecting rod. And on the scaffold plate The provided protection sheet has been laid scaffold,
At one end or both ends in one direction of the scaffold, a shielding wall in which a thin plate material is stretched on the inner surface of a rectangular frame is fixed by being inclined or upright.
【0006】同様の目的を達成するために請求項2に記
載した吊り足場の発明は、請求項1に記載の吊り足場に
おいて、複数本のトラス状ビームが、継ぎ板により直線
状に連結されていることを特徴とする。
According to a second aspect of the present invention, there is provided a suspension scaffold according to the first aspect, wherein a plurality of truss-shaped beams are linearly connected by a connecting plate. It is characterized by being.
【0007】同様の目的を達成するために請求項3に記
載した吊り足場の架設方法発明は、高架橋作業に使用す
る次に示す吊り足場を下記手順により架設することを特
徴とする吊り足場の架設方法である。一定間隔をおいて
配置された上弦部材と下弦部材を補強部材により連結し
て一体化された長尺のビーム本体の両端部に継ぎ板を備
えた複数本のトラス状ビームと、杆部材の両端にクラン
プ金具を設けた複数本の第1連結杆と、杆部材の両端の
上下位置に下向きのフック部とクランプ金具を設けた複
数本の第2連結杆とを設け、枠組用台車上において前記
トラス状ビームを平行に配置して、それらの下弦部材に
前記第1連結杆をクランプ金具により夫々連結し、前記
上弦部材に前記第2連結杆のフック部を夫々係合させる
と共にそのクランプ金具を前記下弦部材に嵌めて同第2
連結杆をビーム本体に夫々固定し、上記第2連結杆上に
足場板を列設すると共にその足場板上に防護シートが敷
設された足場を設け、その足場の一方向の一端若しくは
両端部に、矩形状フレームの内面に薄板材が張設された
遮蔽壁を傾斜若しくは直立させて固定して構成された吊
り足場を、地上の占用帯等の作業区域において組み立て
る。ウインチを搭載した複数のウインチ架台を前記吊り
足場上に適宜配置し、同架台を吊り足場のトラス状ビー
ムに取り付ける。その吊り足場を前記枠組用台車を利用
して架設地点まで移動させてから、高架橋の主桁に取り
付けた滑車に前記ウインチのワイヤロープを繰り込む。
前記吊り足場をウインチによって架設高さまで上昇させ
る。主桁に固定したクランプから吊り下げた吊りチェー
ンを、前記吊り足場のトラス状ビームに取り付け、主桁
の下端から吊り足場までの高さ調整を行う。前記ウイン
チ架台を吊り足場から外した後、同架台を地上に降ろし
て撤去する。主桁に固定された吊りチェーンの一端を前
記吊り足場の遮蔽壁の上部に連結する。
According to another aspect of the present invention, there is provided a method of erection of a suspended scaffold, the method comprising the steps of: Is the way. A plurality of truss-like beams having joint plates at both ends of a long beam body integrated by connecting upper and lower chord members arranged at regular intervals by a reinforcing member, and both ends of a rod member A plurality of first connecting rods provided with a clamp, and a plurality of second connecting rods provided with a downward hook portion and a clamp at upper and lower positions of both ends of the rod member. The truss-shaped beams are arranged in parallel, the first connecting rods are respectively connected to the lower chord members by clamps, the hooks of the second connecting rods are respectively engaged with the upper chord members, and the clamps are connected to the upper chords. The second fitting
The connecting rods are respectively fixed to the beam main body, a scaffold plate is arranged on the second connecting rod, and a scaffold on which a protective sheet is laid is provided on the scaffold plate, and one end or both ends of the scaffold in one direction. Then, a hanging scaffold constituted by fixing a shielding wall in which a thin plate material is stretched on the inner surface of a rectangular frame by inclining or standing upright is assembled in a work area such as a private occupation zone on the ground. A plurality of winch mounts on which winches are mounted are appropriately arranged on the hanging scaffold, and the winch is attached to the truss-like beam of the hanging scaffold. The hanging scaffold is moved to the erection point by using the framework cart, and then the winch wire rope is retracted into the pulley attached to the main girder of the viaduct.
The suspension scaffold is raised to the erection height by a winch. A suspension chain suspended from a clamp fixed to the main girder is attached to the truss-like beam of the suspension scaffold, and the height from the lower end of the main girder to the suspension scaffold is adjusted. After removing the winch platform from the suspended scaffold, the platform is lowered to the ground and removed. One end of the suspension chain fixed to the main girder is connected to the upper part of the shielding wall of the suspension scaffold.
【0008】[0008]
【発明の作用及び効果】この足場を構成する主要な部材
であるトラス状ビーム、第1連結杆及び第2連結杆と
は、クランプ金具を用いているので迅速で容易に連結・
組み付けができる。特に、トラス状ビームは縦弾性係数
を大きくするように設けて足場全体の曲げ剛性が高い構
造とされていることから、この足場を高架橋の主桁に吊
りチェーンによって吊り下げる場合に吊り点の間隔を大
きくとることが可能となり、架設後の足場内には吊りチ
ェーンが少なくて済み、作業者の通行や資材の運搬が円
滑に行われる。
The truss-like beam, the first connecting rod, and the second connecting rod, which are the main members constituting the scaffold, are connected quickly and easily because of the use of clamps.
Can be assembled. In particular, since the truss-shaped beam is provided so as to increase the longitudinal modulus of elasticity and has a structure with high bending rigidity of the entire scaffold, when this scaffold is suspended by a suspension chain on the main girder of the viaduct, the distance between the suspension points It is possible to reduce the number of suspension chains in the scaffold after erection, and the traffic of workers and the transportation of materials are performed smoothly.
【0009】また、地上の占用帯等の作業区域において
遮蔽壁を含む足場全体を組み立て、組立時に用いた枠組
用台車をそのまま利用して架設場所に短時間で移動及び
架設作業を行うことができることから、地上の自動車等
の交通規制時間が少なくて済む。
Further, it is possible to assemble the entire scaffold including the shielding wall in a work area such as a private occupation zone on the ground, and to move and install the work to the installation site in a short time by using the framework cart used at the time of assembly. Therefore, traffic control time for vehicles on the ground is reduced.
【0010】したがって、この吊り足場及びその架設方
法によれば、吊り足場の剛性が高く、足場内の作業空間
を有効に利用することができる。加えて、足場の組立て
・解体作業が短時間で容易に行うことができると共に、
安全で迅速に吊り足場を架設することができる等の利点
がある。
Therefore, according to the hanging scaffold and the method of erection thereof, the hanging scaffold has high rigidity, and the working space in the scaffold can be effectively used. In addition, scaffolding and dismantling work can be done easily in a short time,
There are advantages such as the ability to quickly and safely mount a suspended scaffold.
【0011】[0011]
【発明の実施の形態】以下に、本発明の実施の形態例を
図面に基づいて説明する。図1は吊り足場の斜視図、図
2〜図6は吊り足場の組立て順序を示す説明図、図7は
トラス状ビームの正面図、図8は第1連結杆の正面図、
図9は第2連結杆の正面図、図10は枠組用台車、図1
1はウインチ架台の正面図、図12〜図17は吊り足場
の架設順序を示す説明図である。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a suspended scaffold, FIGS. 2 to 6 are explanatory views showing an assembling sequence of the suspended scaffold, FIG. 7 is a front view of a truss beam, FIG. 8 is a front view of a first connecting rod,
9 is a front view of the second connecting rod, FIG. 10 is a trolley for framing, FIG.
1 is a front view of a winch stand, and FIGS. 12 to 17 are explanatory views showing the order of erection of a hanging scaffold.
【0012】図7に示すトラス状ビーム10は、図1に
示す吊り足場Fの骨組みを構成する主要な部材であり、
一定間隔をおいて配置された直径約43mm、長さ4m
の円形パイプの上弦部材11と、同一長尺寸法の下弦部
材12を補強部材13でV字形をジグザグ状に連続させ
て溶接により強固に連結したビーム本体14を設け、そ
の両端部に複数個の透孔16を設けた継ぎ板15を挟ん
で溶接により一体化している。
The truss-like beam 10 shown in FIG. 7 is a main member constituting the framework of the suspension scaffold F shown in FIG.
Approximately 43mm in diameter and 4m in length arranged at regular intervals
A beam main body 14 is provided in which the upper chord member 11 of the circular pipe and the lower chord member 12 of the same long dimension are continuously connected in a zigzag V-shape by a reinforcing member 13 and firmly connected by welding. It is integrated by welding with the joint plate 15 provided with the through hole 16 interposed therebetween.
【0013】図8に示す第1連結杆20は、直径34m
m、長さ約1.8mの円形パイプたる杆部材21の両端
に、クランプ金具22、22が溶接により一体に固定さ
れた第1連結杆である。そのクランプ金具22は、下方
を開放した半円形固定片23の一端にほぼ半円形状の開
閉片24の一端をピン25で連結し、その固定片23の
他端に小角度だけ回転可能に軸支されたボルト26を、
閉じられた開閉片24の自由端部24aに通して同ボル
ト26にナット27を螺着するように設けられている。
The first connecting rod 20 shown in FIG.
The first connecting rod has clamp members 22, 22 integrally fixed to both ends of a rod member 21 serving as a circular pipe having a length of about 1.8m and a length of about 1.8m. The clamp fitting 22 has one end of a substantially semicircular opening / closing piece 24 connected to one end of a semicircular fixed piece 23 having an open lower part by a pin 25, and is rotatably connected to the other end of the fixed piece 23 by a small angle. The supported bolt 26
A nut 27 is screwed into the bolt 26 through the free end 24 a of the closed opening / closing piece 24.
【0014】図9に示す第2連結杆30は、50mm
角、長さ約1.8mの杆部材31の両端に下向きのフッ
ク部32、32を溶接により一体に固定し、その杆部材
31の両端部に、ステイ33の一端をピン34により小
角度だけ回転可能に連結すると共に、同ステイ33の自
由端にクランプ金具35を前記フック部32の中心下方
に配置されるように夫々設けている。そのクランプ金具
35は前記クランプ金具22と同一構成になるものであ
り、下方を開放した半円形固定片36の一端にほぼ半円
形状の開閉片37の一端をピン38で連結し、その固定
片36の他端に小角度だけ回転可能に軸支されたボルト
39を、閉じられた開閉片37の自由端部37aに通し
て同ボルト39にナット40を螺着するように設けたも
のである。
The second connecting rod 30 shown in FIG.
Downward hook portions 32, 32 are integrally fixed to both ends of a rod member 31 having a corner and a length of about 1.8 m by welding, and one end of a stay 33 is fixed to both ends of the rod member 31 by a pin 34 with a small angle. In addition to being rotatably connected, a clamp fitting 35 is provided at a free end of the stay 33 so as to be arranged below the center of the hook 32. The clamp member 35 has the same structure as the clamp member 22. One end of a semicircular fixing member 36 having an open lower part is connected to one end of a substantially semicircular opening / closing member 37 by a pin 38. A bolt 39 rotatably supported by a small angle at the other end of 36 is provided so that a nut 40 is screwed to the bolt 39 through a free end 37 a of a closed opening / closing piece 37. .
【0015】ここで、上記主要部材を用いた吊り足場F
の組み付けについて説明する。この組立てに際しては、
図2に示すスタンド46の上部に二股状の受け片47を
設けた枠組用架台45、又は図6に示す枠組用台車50
の何れかを適宜利用する。その枠組用台車50は長方形
フレーム51の下面に一組の自在車52を取り付け、該
フレーム51上に支承部材53、53を並設すると共
に、それらの支承部材53の両脇に案内杆54を夫々立
設してなる。
Here, the suspended scaffold F using the above-mentioned main member is used.
Will be described. When assembling,
A frame base 45 provided with a bifurcated receiving piece 47 above a stand 46 shown in FIG. 2, or a frame bogie 50 shown in FIG.
Any of the above is appropriately used. The frame bogie 50 has a set of universal wheels 52 attached to the lower surface of a rectangular frame 51, supporting members 53, 53 are arranged on the frame 51, and guide rods 54 are provided on both sides of the supporting members 53. Each is standing.
【0016】最初に、地上の占用帯等の作業区域におい
て、複数個のトラス状ビーム10を複数の枠組用架台4
5(又は枠組用台車50)の受け片47に夫々挿入して
仮固定し、それらの下弦部材12に第1連結杆20をク
ランプ金具22により夫々連結して、各々のトラス状ビ
ーム10を平行に配置する(図2)。トラス状ビーム1
0の上弦部材11に第2連結杆30のフック部32、3
2を夫々係合させると共に、それらのクランプ金具35
を前記下弦部材に12に夫々嵌めて掴着することにより
同第2連結杆30をビーム本体14に夫々確実に固定す
る(図3)。ついで、上記第2連結杆30の杆部材31
上に金属製の足場板60を列設し(図4)、それらの足
場板60上に防護シート61を敷設する。そして、防護
シート61の浮上がりを防ぐため、該シート61を押え
板62により固定を施す(図5)。これにより足場fを
構成する。
First, a plurality of truss-like beams 10 are connected to a plurality of framework mounts 4 in a work area such as a private occupation zone on the ground.
5 (or the trolley 50) is temporarily inserted and fixed to the receiving pieces 47, and the first connecting rods 20 are respectively connected to the lower chord members 12 by the clamps 22 so that the truss beams 10 are parallelized. (FIG. 2). Truss beam 1
Hook portions 32, 3 of the second connecting rod 30
2 and the clamp fittings 35
The second connecting rods 30 are securely fixed to the beam main body 14 by fitting them to the lower chord members 12 and gripping them (FIG. 3). Next, the rod member 31 of the second connecting rod 30
The metal scaffolds 60 are arranged in a row (FIG. 4), and the protective sheet 61 is laid on those scaffolds 60. Then, in order to prevent the protection sheet 61 from floating, the protection sheet 61 is fixed by a pressing plate 62 (FIG. 5). This constitutes the scaffold f.
【0017】なお、長い寸法の足場fを必要とする場合
には、トラス状ビーム10同士を継ぎ板15部分でボル
トを用いて連結することにより所要の長さが得られる。
When a long scaffold f is required, the required length can be obtained by connecting the truss-like beams 10 at the joint plate 15 using bolts.
【0018】ついで、その足場fの一方向の一端(若し
くは両端部)に、パイプ材67を縦横に適宜組み合わせ
て公知の固定金具で連結して矩形状フレーム66を傾斜
(若しくは直立)状に設ける。ついで、その矩形状フレ
ーム66を補強杆68を適宜用いて補強し(図6)、そ
のフレーム66の内面66aに形枠用合板等の薄板材6
9を張設し、朝顔と通称される遮蔽壁65を上記足場f
に一体的に設ける。また、その遮蔽壁65の外面を安全
ネットで適宜覆うようにする。以上により、図1に示す
吊り足場Fが構成される。
Next, a pipe frame 67 is appropriately combined vertically and horizontally at one end (or both ends) of the scaffold f in one direction and connected with a known fixing bracket to provide a rectangular frame 66 in an inclined (or upright) shape. . Next, the rectangular frame 66 is reinforced by appropriately using a reinforcing rod 68 (FIG. 6), and a thin plate material 6 such as a plywood for a formwork is formed on an inner surface 66a of the frame 66.
9, and a shielding wall 65 commonly called a morning glory is attached to the scaffold f.
Are provided integrally. Further, the outer surface of the shielding wall 65 is appropriately covered with a safety net. Thus, the suspension scaffold F shown in FIG. 1 is configured.
【0019】つぎに、上記発明になる吊り足場を高架橋
作業に使用する場合の架設方法について、図12〜図1
7に基づき説明する。まず、地上の占用帯等の作業区域
において、吊り足場Fを図10に示す枠組み用台車50
上で組み立てる。これについては、既に述べた通りであ
る。ついで、図11に示すウインチ71を搭載すると共
に一対の吊り金具72を設けたウインチ架台70を前記
吊り足場F上に2カ所配置し、それらの吊り金具72を
トラス状ビーム10の上弦部材11に取り付ける。その
吊り足場Fを枠組用台車50を利用して架設地点まで移
動させてから、高架橋の主桁aに取り付けた滑車(図示
せず)に前記ウインチ71のワイヤロープ71aを繰り
込む(図12、図13)。ウインチ71を操作して吊り
足場Fを少し吊り上げてから遮蔽壁に取り付けた安全ネ
ットの固定処理、足場下面等の点検を行い、ついで、架
設高さまで上昇移動させる(図14、図15)。主桁a
に固定したクランプから吊り下げた吊りチェーンbを、
吊り足場Fのトラス状ビーム10に確実に取り付け、主
桁aの下端から足場までの高さ調整を行う。同時に、吊
りチェーンbの張り具合を確認する(図16)。前記ウ
インチ架台70を吊り足場Fから外した後、同架台70
を地上に降ろして撤去する。主桁aに固定した吊りチェ
ーンcの一端を、吊り足場Fの遮蔽壁65の上部に連結
する(図16)。以上により、吊り足場Fの架設が完了
する(図17)。
Next, a method of erection when the hanging scaffold according to the present invention is used for viaduct work will be described with reference to FIGS.
7 will be described. First, in a work area such as a private occupation zone on the ground, the hanging scaffold F is connected to the frame bogie 50 shown in FIG.
Assemble above. This is as described above. Next, two winch stands 70 on which the winch 71 shown in FIG. 11 is mounted and the pair of hanging fittings 72 are provided are arranged on the hanging scaffold F, and the hanging fittings 72 are attached to the upper chord member 11 of the truss-like beam 10. Attach. After the suspension scaffold F is moved to the erection point using the frame bogie 50, the wire rope 71a of the winch 71 is retracted into a pulley (not shown) attached to the main girder a of the viaduct (FIG. 12, (FIG. 13). After slightly lifting the suspended scaffold F by operating the winch 71, the safety net attached to the shielding wall is fixed, the lower surface of the scaffold is inspected, and then moved up to the erection height (FIGS. 14 and 15). Main girder a
The suspension chain b suspended from the clamp fixed to
The hanging scaffold F is securely attached to the truss-like beam 10, and the height from the lower end of the main girder a to the scaffold is adjusted. At the same time, the tension of the suspension chain b is checked (FIG. 16). After removing the winch rack 70 from the hanging scaffold F,
Is dropped on the ground and removed. One end of the suspension chain c fixed to the main girder a is connected to the upper part of the shielding wall 65 of the suspension scaffold F (FIG. 16). Thus, the installation of the suspension scaffold F is completed (FIG. 17).
【0020】なお、高架橋作業が終了して上記吊り足場
Fを撤去・解体する場合は、上述した架設方法及び組付
け方の逆の手順に従って行う。その詳細については、省
略する。
In the case where the suspension scaffold F is removed and dismantled after the viaduct work has been completed, the suspension scaffold F is carried out in the reverse order of the above-described erection method and assembly method. The details are omitted.
【図面の簡単な説明】[Brief description of the drawings]
【図1】吊り足場の斜視図FIG. 1 is a perspective view of a suspended scaffold.
【図2】吊り足場の組立て順序を示す説明図FIG. 2 is an explanatory view showing an assembling sequence of a hanging scaffold.
【図3】吊り足場の組立て順序を示す説明図FIG. 3 is an explanatory view showing an assembling sequence of a hanging scaffold.
【図4】吊り足場の組立て順序を示す説明図FIG. 4 is an explanatory view showing the order of assembling the suspended scaffold.
【図5】吊り足場の組立て順序を示す説明図FIG. 5 is an explanatory view showing the order of assembling the suspended scaffold.
【図6】吊り足場の組立て順序を示す説明図FIG. 6 is an explanatory view showing the order of assembling the suspended scaffold.
【図7】トラス状ビームの正面図FIG. 7 is a front view of a truss beam.
【図8】第1連結杆の正面図FIG. 8 is a front view of a first connecting rod.
【図9】第2連結杆の正面図FIG. 9 is a front view of a second connecting rod.
【図10】枠組用台車FIG. 10 is a trolley for a framework.
【図11】ウインチ架台の正面図FIG. 11 is a front view of a winch stand.
【図12】吊り足場の架設順序を示す説明図FIG. 12 is an explanatory view showing the order in which hanging scaffolds are erected.
【図13】吊り足場の架設順序を示す説明図FIG. 13 is an explanatory diagram showing the order of erection of hanging scaffolds.
【図14】吊り足場の架設順序を示す説明図FIG. 14 is an explanatory view showing the order of erection of hanging scaffolds.
【図15】吊り足場の架設順序を示す説明図FIG. 15 is an explanatory view showing the order of erection of hanging scaffolds.
【図16】吊り足場の架設順序を示す説明図FIG. 16 is an explanatory view showing the order in which the hanging scaffolds are erected.
【図17】吊り足場の架設順序を示す説明図FIG. 17 is an explanatory view showing the order of erection of the hanging scaffolds.
【符号の説明】[Explanation of symbols]
a→主桁 b、c→吊りチェーン f→足場 F→吊り
足場 10→トラス状ビーム 11→上弦部材 12→下弦部
材 14→ビーム本体 15→継ぎ板 20→第1連結杆 21→杆部材 22→クランプ金具 30→第2連結杆 31→杆部材 32→フック部 3
5→クランプ金具 45→枠組用架台 50→枠組用台車 60→足場板
61→防護シート 65→遮蔽壁 66→矩形状フレーム 69→薄板材 70→ウインチ架台 71→ウインチ
a → main girder b, c → suspension chain f → scaffold F → suspension scaffold 10 → truss beam 11 → upper chord member 12 → lower chord member 14 → beam body 15 → joint plate 20 → first connecting rod 21 → rod member 22 → Clamp fitting 30 → second connecting rod 31 → rod member 32 → hook 3
5 → Clamp fitting 45 → Frame for frame 50 → Frame for frame 60 → Scaffold plate
61 → Protective sheet 65 → Shielding wall 66 → Rectangular frame 69 → Thin plate 70 → Winch mount 71 → Winch

Claims (3)

    (57)【特許請求の範囲】(57) [Claims]
  1. 【請求項1】 一定間隔をおいて配置された上弦部材と
    下弦部材を補強部材により連結して一体化された長尺の
    ビーム本体の両端部に継ぎ板を備えた複数本のトラス状
    ビームと、杆部材の両端にクランプ金具を設けた複数本
    の第1連結杆と、杆部材の両端の上下位置に下向きのフ
    ック部とクランプ金具を設けた複数本の第2連結杆とを
    設け、前記トラス状ビームを平行に配置してそれらの下
    弦部材に前記第1連結杆をクランプ金具により夫々連結
    し、前記上弦部材に前記第2連結杆のフック部を夫々係
    合させると共にそのクランプ金具を前記下弦部材に嵌め
    て同第2連結杆をビーム本体に夫々固定し、上記第2連
    結杆上に足場板を列設すると共にその足場板上に防護シ
    ートが敷設された足場を設け、その足場の一方向の一端
    若しくは両端部に、矩形状フレームの内面に薄板材が張
    設された遮蔽壁を傾斜若しくは直立させて固定したこと
    を特徴とする吊り足場。
    1. A plurality of truss-like beams having joint plates at both ends of a long beam body integrated by connecting an upper chord member and a lower chord member arranged at regular intervals by a reinforcing member. A plurality of first connecting rods provided with clamps at both ends of the rod member, and a plurality of second connecting rods provided with downward hook portions and clamps at upper and lower positions of both ends of the rod member; The truss-shaped beams are arranged in parallel, the first connecting rods are respectively connected to the lower chord members by clamps, the hooks of the second connecting rods are respectively engaged with the upper chord members, and the clamps are connected to the lower chords. The second connecting rods are fixed to the beam main body by being fitted to the lower chord members, and scaffold plates are arranged on the second connecting rods, and a scaffold on which a protective sheet is laid is provided on the scaffold plate. At one end or both ends in one direction, A suspended scaffold characterized in that a shielding wall in which a thin plate material is stretched is fixed to an inner surface of a rectangular frame by inclining or standing upright.
  2. 【請求項2】 複数本のトラス状ビームが、継ぎ板によ
    り直線状に連結されていることを特徴とする請求項1に
    記載の吊り足場。
    2. The suspended scaffold according to claim 1, wherein the plurality of truss beams are connected linearly by a connecting plate.
  3. 【請求項3】 高架橋作業に使用する次に示す吊り足場
    を下記手順により架設することを特徴とする吊り足場の
    架設方法。一定間隔をおいて配置された上弦部材と下弦
    部材を補強部材により連結して一体化された長尺のビー
    ム本体の両端部に継ぎ板を備えた複数本のトラス状ビー
    ムと、杆部材の両端にクランプ金具を設けた複数本の第
    1連結杆と、杆部材の両端の上下位置に下向きのフック
    部とクランプ金具を設けた複数本の第2連結杆とを設
    け、枠組用台車上において前記トラス状ビームを平行に
    配置して、それらの下弦部材に前記第1連結杆をクラン
    プ金具により夫々連結し、前記上弦部材に前記第2連結
    杆のフック部を夫々係合させると共にそのクランプ金具
    を前記下弦部材に嵌めて同第2連結杆をビーム本体に夫
    々固定し、上記第2連結杆上に足場板を列設すると共に
    その足場板上に防護シートが敷設された足場を設け、そ
    の足場の一方向の一端若しくは両端部に、矩形状フレー
    ムの内面に薄板材が張設された遮蔽壁を傾斜若しくは直
    立させて固定して構成された吊り足場を、地上の占用帯
    等の作業区域において組み立てる。ウインチを搭載した
    複数のウインチ架台を前記吊り足場上に適宜配置し、同
    架台を吊り足場のトラス状ビームに取り付ける。その吊
    り足場を前記枠組用台車を利用して架設地点まで移動さ
    せてから、高架橋の主桁に取り付けた滑車に前記ウイン
    チのワイヤロープを繰り込む。前記吊り足場をウインチ
    によって架設高さまで上昇させる。主桁に固定したクラ
    ンプから吊り下げた吊りチェーンを、前記吊り足場のト
    ラス状ビームに取り付け、主桁の下端から吊り足場まで
    の高さ調整を行う。前記ウインチ架台を吊り足場から外
    した後、同架台を地上に降ろして撤去する。主桁に固定
    された吊りチェーンの一端を前記吊り足場の遮蔽壁の上
    部に連結する。
    3. A method for erection of a suspended scaffold, which is used for a viaduct work according to the following procedure. A plurality of truss-like beams having joint plates at both ends of a long beam body integrated by connecting upper and lower chord members arranged at regular intervals by a reinforcing member, and both ends of a rod member A plurality of first connecting rods provided with a clamp, and a plurality of second connecting rods provided with a downward hook portion and a clamp at upper and lower positions of both ends of the rod member. The truss-shaped beams are arranged in parallel, the first connecting rods are respectively connected to the lower chord members by clamps, the hooks of the second connecting rods are respectively engaged with the upper chord members, and the clamps are connected to the upper chords. The second connecting rod is fixed to the beam main body by being fitted to the lower chord member, a scaffold plate is arranged on the second connecting rod, and a scaffold on which a protective sheet is laid is provided on the scaffold plate. One end in one direction or The end, a rectangular frame hanging scaffold sheet material is constituted by fixing in an inclined or upright stretched by shielding wall on the inner surface of the assembled in work areas such as straps ground occupied. A plurality of winch mounts on which winches are mounted are appropriately arranged on the hanging scaffold, and the winch is attached to the truss-like beam of the hanging scaffold. The hanging scaffold is moved to the erection point by using the framework cart, and then the winch wire rope is retracted into the pulley attached to the main girder of the viaduct. The suspension scaffold is raised to the erection height by a winch. A suspension chain suspended from a clamp fixed to the main girder is attached to the truss-like beam of the suspension scaffold, and the height from the lower end of the main girder to the suspension scaffold is adjusted. After removing the winch platform from the suspended scaffold, the platform is lowered to the ground and removed. One end of the suspension chain fixed to the main girder is connected to the upper part of the shielding wall of the suspension scaffold.
JP10220344A 1998-08-04 1998-08-04 Suspended scaffold and its erection method Expired - Lifetime JP3100574B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
JP10220344A JP3100574B2 (en) 1998-08-04 1998-08-04 Suspended scaffold and its erection method

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JP3100574B2 true JP3100574B2 (en) 2000-10-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0628333U (en) * 1992-09-18 1994-04-15 セイレイ工業株式会社 Side clutch rod for traveling vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101782159B1 (en) * 2016-11-15 2017-09-26 김광희 Hypothetical Pipe Rack Structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0628333U (en) * 1992-09-18 1994-04-15 セイレイ工業株式会社 Side clutch rod for traveling vehicle

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