JP2005105795A

JP2005105795A - Base rope support device for curved temporary scaffolding

Info

Publication number: JP2005105795A
Application number: JP2003377559A
Authority: JP
Inventors: Yoichi Yoshida; 洋一吉田
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-10-01
Filing date: 2003-10-01
Publication date: 2005-04-21

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base rope support device which enables a worker to freely move on scaffolding step boards with no handrails without the need to change the base rope position to hold his safety belt's hook, in the work of assembling or dismantling temporary scaffoldings to be installed or dismantled around curved structures such as cylindrical tanks and the like. <P>SOLUTION: An L-shaped plate (2) is provided on a crank-shaped support (1). A freely rotating starfish-shaped plate (3), rollers (4), a disk (5) and a bearing (6) are provided on top of the L-shaped plate (2). A base rope (11) is inserted into a space surrounded by the L-shaped plate (2), the starfish-shaped plate (3) and rollers (4). A ring (14) is attached to the base rope (11) and is fixed to a scaffolding frame (12) with a pipe clamp (9). A worker stands on a step board (15) after engaging his safety belt's hook (13) with the ring (14). As he moves, the ring follows him, contacts a leg of the starfish-shaped plate (3), then enters between two legs and leaves them in the direction of his moves, so that he can freely move on the step boards (15) without the need to change the base rope position to hold his safety belt's hook (13). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

Detailed Description of the Invention

この発明は、円筒形のタンク等の曲線状の構造物に設置する仮設足場の組み立て、解体作業において、作業者が手摺のない踏み板上を移動する際安全帯のフックを掛け替える事なく移動できるようにした、親綱を支持する装置に関するものである。 The present invention can move without changing the hook of the safety belt when an operator moves on a footboard without a handrail in the assembly and disassembly work of a temporary scaffold installed on a curved structure such as a cylindrical tank. The present invention relates to a device for supporting the master rope.

従来、曲線状に組み立てる仮設足場の安全対策としては、水平に親綱を設置する事が困難であるため曲線状の構造物の屋根部分より親綱を垂直に適宜な間隔に下ろして、その親綱に安全帯のフックを取り付けて万一の墜落災害に備えて作業していた。この方法だと下層から上層へ組み立てが進むにつれて、作業者の移動範囲がだんだん狭くなってくる。最終的に曲線状の構造物の屋根付近の高さまでくると親綱を使っての移動が非常に困難となり、移動の際親綱から安全帯のフックを外す事態が頻発し非常に危険であった。 Conventionally, as a safety measure for temporary scaffolds assembled in a curved shape, it is difficult to install the main rope horizontally, so the parent rope is lowered vertically from the roof portion of the curved structure at an appropriate interval, and A safety belt hook was attached to the rope, and I was working in case of a crash. With this method, as the assembly progresses from the lower layer to the upper layer, the movement range of the worker becomes gradually narrower. When it reaches the height near the roof of the curved structure in the end, it becomes very difficult to move using the master rope, and it is very dangerous to frequently remove the hook of the safety belt from the master rope when moving. It was.

Problems to be solved by the invention

従来の垂直に設置する親綱では、足場作業が上層に進むにしたがって移動範囲が狭くなるので親綱より安全帯のフックを外す事態が発生する。また、曲線状の構造物の屋根より親綱を下ろし、その上端を固定する時も非常に危険であった。
更に、円筒形のタンク等の壁面の塗装工事においては、塗装が済み足場を解体する際、親綱に付いている安全帯のフック掛け金具が仕上った塗装面に当たり塗装面を傷つける事もしばしばあった。
本発明は、完成した手摺の有る仮設足場より安全に親綱及び曲線仮設足場の親綱支持装置を取り付けることができると共に、親綱に取り付けたリングに一度安全帯のフックを掛けるとその層の足場作業が完了するまで安全帯のフックを外す必要がなく、両手に物を持って移動できるので作業者は安全に作業できるようになる。
又、屋根より親綱を下ろして固定する作業が省けるため、壁面を傷付ける事がなくなる。その結果、危険が減少し作業効率が向上する。In the conventional master rope installed vertically, the moving range becomes narrower as the scaffold work progresses to the upper layer, so that a situation occurs where the hook of the safety belt is removed from the master rope. It was also very dangerous when the master rope was lowered from the roof of the curved structure and the upper end was fixed.
In addition, in painting work on wall surfaces such as cylindrical tanks, when disassembling the scaffold, the painted surface often hits the painted surface of the safety belt hook fitting attached to the master rope and damages the painted surface. It was.
The present invention can attach the master rope support device of the master rope and the curved temporary scaffold more safely than the temporary scaffold with the completed handrail, and once the hook of the safety belt is hung on the ring attached to the master rope, the layer It is not necessary to remove the hook of the safety belt until the scaffolding work is completed, and the operator can move safely with an object in both hands.
Moreover, since the work of lowering the master rope from the roof and fixing it can be omitted, the wall surface is not damaged. As a result, danger is reduced and work efficiency is improved.

Means for solving the problem

いま、その構成を説明すると、
（イ）クランク型支柱（１）に親綱（１１）の加重を受けるＬ型の板（２）を設ける。
（ロ）クランク型支柱（１）の上部に親綱（１１）の外れ防止用のヒトデ型の回転する板（３）を設ける。
（ハ）ヒトデ型の板（３）の下側の各足元部分に親綱（１１）を保持するコロ（４）とその下にコロ（４）の下部を支持する円盤（５）と軸受け（６）を設ける。
（ニ）Ｌ型の板（２）及びヒトデ型の板（３）とコロ（４）に囲まれた空間に親綱（１１）を入れる、これを作業範囲の仮設足場の建枠（１２）の数と同じ数量作る。
（ホ）階段位置にくる親綱（１１）の部位に、安全帯のフック（１３）を掛けるリング（１４）を取り付ける。
（ヘ）仮設足場の各建枠（１２）の内側支柱の上部にパイプクランプ（９）で順次固定する。
（ト）親綱（１１）の一方を端の建枠（１２）に固定し、他方を親綱（１１）が弛まないように張り建枠（１２）に固定する。
以上のように装置する。Now, to explain its configuration,
(A) An L-shaped plate (2) that receives the weight of the master rope (11) is provided on the crank-type column (1).
(B) A starfish-type rotating plate (3) for preventing the master rope (11) from coming off is provided on the upper part of the crank-type column (1).
(C) A roller (4) that holds the master rope (11) at each lower foot part of the starfish-shaped plate (3), and a disk (5) and bearing that supports the lower part of the roller (4) below it 6) is provided.
(D) Put the master rope (11) into the space surrounded by the L-shaped board (2) and the starfish-shaped board (3) and the roller (4). Make the same quantity as the number of.
(E) Attach the ring (14) for hooking the hook (13) of the safety belt to the part of the master rope (11) at the stairs position.
(F) It fixes to the upper part of the inner side support | pillar of each building frame (12) of a temporary scaffold with a pipe clamp (9) sequentially.
(G) One side of the master rope (11) is fixed to the building frame (12) at the end, and the other is fixed to the tension building frame (12) so that the parent rope (11) does not loosen.
The apparatus is as described above.

次に本発明の実施の形態を述べると、作業員は完成した仮設足場の階段を上り、足場の組み立てを開始する踏み板（１５）上に出る直前に安全帯のフック（１３）を、親綱（１１）に付いているリング（１４）に確実に掛けてから踏み板（１５）上に出る。作業員が踏み板（１５）上を移動すると、安全帯のフック（１３）を掛けたリング（１４）が追従してくる。リング（１４）がヒトデ型の板（３）の足の部分に当たると、ヒトデ型の板（３）は作業員が移動した方向へ回転を始める、そのまま移動を続けるとリング（１４）はヒトデ型の板（３）の足の間に入り、その後、移動方向側に抜ける。よって、作業員は安全帯のフック（１３）を掛け替えする事なく自由に移動できる。
Ｌ型の板（２）の先端部の長さ（１６）は、ヒトデ型の板（３）の足先間の長さ（１７）より長いので、ヒトデ型の板（３）がどのように回転しても足先の一つは常にＬ型の板（２）の先端部にくる。したがって、親綱（１１）は、Ｌ型の板（２）及びヒトデ型の板（３）とコロ（４）に囲まれた空間から外れることはない。
なを、コロ（４）は、自転しなくても摩擦係数の小さい材質の物（１０）であれば同じ効果がある。
また、円筒形の構造物の直径が１０ｍ未満の場合、親綱（１１）の屈折角度が１０°以上（１８）に大きくなるのでヒトデ型の板（３）の足の数を一つ減じ５ケにすることにより、リング（１４）とヒトデ型の板（３）の足先との衝突を回避できる。その結果、リング（１４）はヒトデ型の板（３）の足の間を円滑に通過することができる。
足場の解体については、組み立ての逆の手順で行う。Next, an embodiment of the present invention will be described. The worker climbs the stairs of the completed temporary scaffold, and puts the hook (13) of the safety belt on the footboard (15) for starting the assembly of the scaffold, Securely hang on the ring (14) attached to (11) and come out on the tread (15). When the worker moves on the tread board (15), the ring (14) with the hook (13) of the safety belt follows. When the ring (14) hits the foot part of the starfish-type plate (3), the starfish-type plate (3) starts to rotate in the direction in which the worker has moved. It enters between the legs of the plate (3), and then comes out to the moving direction side. Therefore, the worker can move freely without changing the hook (13) of the safety belt.
Since the length (16) of the tip of the L-shaped plate (2) is longer than the length (17) between the toes of the starfish-shaped plate (3), how is the starfish-shaped plate (3)? Even if it rotates, one of the feet always comes to the tip of the L-shaped plate (2). Therefore, the master rope (11) does not deviate from the space surrounded by the L-shaped plate (2) and the starfish-shaped plate (3) and the roller (4).
The roller (4) has the same effect as long as it is made of a material (10) having a small friction coefficient even if it does not rotate.
When the diameter of the cylindrical structure is less than 10 m, the refraction angle of the parent rope (11) increases to 10 ° or more (18), so the number of feet of the starfish-type plate (3) is reduced by one. By making the ring, the collision between the ring (14) and the toes of the starfish type plate (3) can be avoided. As a result, the ring (14) can smoothly pass between the legs of the starfish-type plate (3).
The scaffold will be disassembled in the reverse order of assembly.

The invention's effect

したがって、何もない踏み板上で作業員が、万一貧血等の体調不良をおこすような事があっても、突風や地震等の不意の事象が発生しても、重大災害になる墜落事故を防止することができる。 Therefore, even if a worker on the tread board has nothing to do with his / her physical condition such as anemia, or a sudden event such as a gust or an earthquake occurs, a crash accident that becomes a serious disaster will occur. Can be prevented.

本発明の側面図 Side view of the present invention 本発明の平面図 Plan view of the present invention 本発明の底面図 Bottom view of the present invention 本発明のＡ−Ａ断面図 AA sectional view of the present invention 本発明のコロを摩擦係数の小さい材質の物に替えた側面図 Side view of the roller according to the present invention replaced with a material having a small friction coefficient 本発明のコロを摩擦係数の小さい材質の物に替えたＢ−Ｂ断面図 BB sectional view in which the roller of the present invention is replaced with a material having a small friction coefficient 本発明の取り付け側面図 Mounting side view of the present invention 本発明の使用状況斜視図 Usage perspective view of the present invention 本発明のリング通過状況の平面図 Plan view of the ring passing situation of the present invention 本発明のリング通過状況のＣ−Ｃ断面図 CC sectional view of the ring passing situation of the present invention 本発明のヒトデ状の板（３）の足の数を一つ減じた平面図 The top view which reduced the number of the legs of the starfish-like board (3) of this invention by one

Claims

(A) An L-shaped plate (2) that receives the weight of the master rope is provided on the crank-type column (1).
(B) A rotating starfish type plate (3) for preventing the main rope from coming off is provided on the upper part of the crank-type column (1).
(C) A roller (4) for holding the master rope is provided at each lower foot portion of the starfish-type plate (3), and a disk (5) for supporting the lower portion of the roller (4) is provided therebelow.
(D) A bearing (6) is provided between the starfish type plate (3) and the disk (5).
(E) A washer (7) and a bolt (8) are provided on the top of the crank-type column (1).
(F) A pipe clamp (9) is provided at the lower part of the crank-type column (1).
The parent rope support device for the curved temporary scaffolding constructed as described above.

The parent rope support device for a curved temporary scaffold according to claim 1, wherein the roller (4) is replaced with a material (10) having a low friction coefficient.