JP2016023465A

JP2016023465A - Assembly-type scaffold for high-place work in manhole tank

Info

Publication number: JP2016023465A
Application number: JP2014148379A
Authority: JP
Inventors: 大賀偉生; Takeo Oga
Original assignee: OGA Co Ltd
Current assignee: OGA Co Ltd
Priority date: 2014-07-20
Filing date: 2014-07-20
Publication date: 2016-02-08
Anticipated expiration: 2034-07-20
Also published as: JP5640229B1

Abstract

PROBLEM TO BE SOLVED: To provide a scaffold that allows work inside a manhole tank to be performed safely and complies with the Ordinance on Industrial Safety and Health.SOLUTION: An assembly-type scaffold for high-place work in a manhole tank includes: a work scaffold floor 7 having an intermediately holding fitting 9 for a scaffold board and a movable holding fitting 10 for a scaffold board; a scaffold supporting frame having a scaffold hooking hook 11 and a retaining metal fitting 12 for preventing hook dislocation; and a work scaffold frame on left 16 and on right 17 having a handrail 13, an intermediate rail member 14 and a baseboard 15. A work procedure comprises the following steps for: hooking the scaffold hooking hook 11 of the scaffold supporting frame on a gangway ladder 2 of the manhole; setting the retaining metal fitting 12 for preventing hook dislocation; setting the work scaffold frame on left and right 17, 16 on the work scaffold floor 7 and assembling the frames; inserting one surface of a scaffold board into the movable holding fitting 10 for a scaffold board, and pressing an end point of the scaffold board against a manhole wall surface; and fixing the scaffold board with the intermediately holding fitting 9 for a scaffold board.SELECTED DRAWING: Figure 5

Description

マンホールの槽内作業に於いて、足場が悪く、狭い為に梯子や脚立が使えず
苦労いたします。槽内に有るタラップを利用した足場を考えてみました。 When working in a manhole tank, the scaffolding is bad and the ladder and stepladder cannot be used because of the narrow space. I thought about the scaffolding using the wraps in the tank.

作業用足場については、墜落事故につながる為に労働安全衛生規則に厳しく定められています。この規則は、事業者が、守りなさいとも定められています。 Working scaffolds are strictly defined in the Occupational Safety and Health Regulations to lead to crashes. This rule also stipulates that operators should observe.

高さ15センチメートル以上の幅木、高さ85センチメートル以上の手すりや中さんを付けることや、二以上の支持物に取り付けることや、足場板は、三以上の支持物にかけ渡すこと等が述べられています。 A baseboard with a height of 15 centimeters or more, a handrail or medium with a height of 85 centimeters or more, attaching to two or more supports, and scaffolding boards to be passed over three or more supports It is stated.

特許第2750564号は、マンホール用のハンガー式作業足場板が述べられています。 Patent No. 2750564 describes a hanger-type work scaffolding plate for manholes.

特開2007-327221号は、作業用足場が述べられています。 JP 2007-327221 describes a working scaffold.

特許第2750564号Patent No. 2750564 特開2007-327221号JP 2007-327221

先日マンホール槽内作業用の足場の説明会が有り、参加しました。特許取得製品とゆうことで、期待をしていましたが、結果、駄目でした。 The other day, there was a briefing on the scaffolding for working in the manhole tank and I participated. I was expecting it to be a patented product, but the result was not good.

タラップに1点吊りで作業床だけの物でした。法律では、事業者は、労働安全衛生規則に順守している物を作業用工具として与えなさいと指示しています。
労働安全衛生規則に順守している工具や足場がないと非常に困ります。 It was only a work floor with one point hanging on the lap. The law dictates that business operators provide items for work that comply with occupational safety and health regulations.
If you don't have tools or scaffolds that comply with occupational safety and health regulations, you will be in trouble.

マンホール槽内作業が安全にできて、労働安全衛生規則に順守している作業用足場を開発する事が課題です。 The challenge is to develop a working scaffold that can safely work in the manhole tank and comply with occupational safety and health regulations.

マンホール槽内で使用出来る足場の条件は、コンパクトである事、軽い事、堅固な事と労働安全衛生規則に順守している事が挙げられます。 The conditions of the scaffolding that can be used in the manhole tank are that it is compact, light, solid, and complies with occupational safety and health regulations.

軽いことと堅固なことは、相反します。堅固にすればするほど重くなります。
その為に、組立式を採用し、現場に設置しながら効率良く組み立てて、完成品にします。 There is a conflict between lightness and firmness. The harder it gets, the heavier it becomes.
For this purpose, an assembling formula is adopted, and it is assembled efficiently while being installed on site to make a finished product.

マンホール槽内高所作業に使用する組立式足場は、作業用足場床、足場支持フレームと作業用足場枠右用左用で構成され、前記作業用足場床は、足場板中間保持金具と足場板可動保持金具を有し、前記足場支持フレームは、足場引掛用フックとフック外れ防止引き止め金具を3個以上有し、前記作業用足場枠右用左用は、各々にてすり、中さんと幅木を有します。 The assembly scaffold used for manhole tank height work is composed of a work scaffold floor, a scaffold support frame, and a work scaffold frame right-left use, and the work scaffold floor is movable with a scaffolding plate intermediate holding bracket and a scaffolding plate movable The scaffold support frame has at least three hooks for hooking the scaffold and three hooks for preventing the hook from being removed. I have.

作業手順は、まず、前記足場支持フレーム足場引掛用フックをマンホールのタラップに引掛け、前記フック外れ防止引き止め金具をセットし、前記作業用足場枠右用左用を前記作業用足場床にセットして効率良く組立し、所定の長さの足場板を片面は、前記足場板可動保持金具に差込み、前記足場板の端点をマンホールの壁面に密着後、前記足場板を前記足場板中間保持金具で固定する事を特徴とします。 The work procedure is as follows. First, hook the scaffold support frame scaffold hook on the manhole's lap, set the hook disengagement prevention metal fitting, and set the work scaffold frame right for left on the work scaffold floor. Assemble efficiently, one side of the scaffolding plate of a predetermined length is inserted into the scaffolding plate movable holding bracket, the end point of the scaffolding plate is in close contact with the wall surface of the manhole, and then the scaffolding plate is fixed with the scaffolding plate intermediate holding bracket It is characterized by doing.

従来の足場板だけの作業に比較して、安全で広い足場床、手すり、中さんや幅木があることで安心して作業ができるので、疲労も少ないし、作業効率が非常によくなる。 Compared to the conventional work with scaffolding plates alone, there is a safe and wide scaffolding floor, handrails, middle skirts and skirting boards, so you can work with peace of mind, reducing fatigue and working efficiency.

現在のマンホール槽内作業と足場板イメージ図Current manhole tank work and scaffold board image 現在のマンホール槽内作業の特許取得足場イメージ図Patented scaffolding image of current manhole tank work 作業用足場床と足場支持フレーム取付イメージ図Work scaffolding floor and scaffold support frame installation image 作業用足場床、足場支持フレームと足場枠イメージ図Working scaffold floor, scaffold support frame and scaffold frame image diagram 足場枠と足場板取付イメージ図Scaffolding frame and scaffolding board image 足場枠立面図と平面図イメージ図Scaffolding frame elevation and top view image 足場枠を使用して作業中イメージ図Working image using scaffolding frame 足場枠と足場板を取付して、作業中イメージ図Attach scaffolding frame and scaffolding board

１マンホール
２タラップ
３作業員
４安全帯
５足場板
６作業用足場
７作業用足場床
８足場支持フレーム
９足場板中間保持金具
１０足場板可動保持金具
１１足場引掛用フック
１２フックはずれ防止引留金具
１３手すり
１４中さん
１５幅木
１６作業用足場枠左用
１７作業用足場枠右用
１８足場板 DESCRIPTION OF SYMBOLS 1 Manhole 2 Tarup 3 Worker 4 Safety belt 5 Scaffolding board 6 Working scaffold 7 Working scaffold floor
8 Scaffolding Support Frame 9 Scaffolding Plate Intermediate Holding Bracket 10 Scaffolding Plate Movable Holding Bracket 11 Scaffolding Hook 12 Hook Release Prevention Locking Bracket 13 Handrail 14 Middle 15 Skirting Board 16 Working Scaffolding Frame Left 17 Working Scaffolding Frame Right 18 Scaffolding Board

以下、本発明の実施の形態を図に基づいて説明する。
図１は、現在の足場板を使っての作業状況です。マンホール１の内径よりいくらか長い足場板５を準備し、先ずタラップ２に片側を載せます。次に反対側をマンホール１の壁にあてて、荷重をかけます。反対側が壁に食い込んだようになって安定します。そこで作業者３が、足場の上に乗って作業します。利点としては、非常に簡単に足場ができる事で、非常に普及しています。足場から足を踏み外す、足場がひっくり返って転落する、足場が折れて落下する等、非常に大きな危険が潜んでいます。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Figure 1 shows the current working situation using the scaffolding board. Prepare a scaffolding plate 5 that is somewhat longer than the inner diameter of the manhole 1, and first place one side on the trap 2. Next, place the opposite side against the wall of manhole 1 and apply the load. It stabilizes as the other side bites into the wall. Therefore, worker 3 works on the scaffold. As an advantage, it is very popular because it can be used as a scaffold. There are tremendous dangers such as stepping off the scaffold, the platform tipping over and falling, and the platform breaking and falling.

図２は、通常の作業用足場６をタラップ２にセットして、作業者３が、乗って作業をしています。既存の特許文献もこのイメージでした。作業者３を安全に守っているのは、安全帯４だけです。タラップへの引っかかりも1箇所だけなのが、気になります。もし、タラップが外れたら、作業者共々落下します。
手すりが無い事なども大変気になります。 In FIG. 2, an ordinary work scaffold 6 is set on the lap 2, and an operator 3 is riding and working. Existing patent literature also had this image. Only the safety belt 4 protects the worker 3 safely. I am worried that there is only one place on the trap. If the tarp comes off, both workers will fall.
I am very worried that there is no handrail.

図３は、マンホール槽内高所作業に使用する組立式足場です。作業用足場床７、足場支持フレーム８と作業用足場枠左用１６右用１７で構成され、作業用足場床７は、足場板中間保持金具９と足場板可動保持金具１０を有し、足場支持フレーム８は、足場引掛用フック１１とフック外れ防止引き止め金具１２を3個以上有し、作業用足場枠左用１６右用１７は、各々にてすり１３、中さん１４と幅木１５を有します。 Fig. 3 shows an assembly-type scaffold used for high-altitude work in a manhole tank. The work scaffolding floor 7 is composed of a scaffolding support frame 8 and a work scaffolding frame 16 for the left and 17 for the right. The work scaffolding floor 7 has a scaffolding plate intermediate holding bracket 9 and a scaffolding plate movable holding bracket 10, and supports the scaffolding. The frame 8 has three or more scaffolding hooks 11 and three or more hook-retaining prevention metal fittings 12, and the working scaffold frame left 16 and right 17 each have a slide 13, a middle 14 and a skirting board 15. The

図４は、前記足場支持フレーム８の足場引掛用フック１１をマンホール１のタラップ２に引掛け、前記フック外れ防止引き止め金具１２をセットし、前記作業用足場枠左用１６右用１７を前記作業用足場床７にセットして効率良く組立します。 FIG. 4 shows that the hook 11 for hooking the scaffold of the scaffold support frame 8 is hooked on the lap 2 of the manhole 1, the hook disengagement prevention metal fitting 12 is set, and the work scaffold frame left 16 and right 17 are used for the work. Set on scaffolding floor 7 and assemble efficiently.

図５は、所定の長さの足場板１８を片面は、前記足場板可動保持金具１０に差込み、前記足場板１８の端点をマンホールの壁面に密着後、前記足場板１８を前記足場板中間保持金具９で固定します。 FIG. 5 shows that one side of a scaffolding plate 18 having a predetermined length is inserted into the scaffolding plate movable holding bracket 10, the end points of the scaffolding plate 18 are brought into close contact with the wall surface of a manhole, and then the scaffolding plate 18 is held in the middle of the scaffolding plate. Secure with bracket 9.

図６は、作業用足場床７の平面図に作業用足場枠左用１６右用１７と足場板１８をセットした平面図です。 FIG. 6 is a plan view of the work scaffold floor 7 with the work scaffold left frame 16 right 17 and the scaffold plate 18 set.

図７、８は、作業中のイメージ図です。 Figures 7 and 8 are images of the work in progress.

Claims

The assembly scaffold used for manhole tank height work is composed of a work scaffold floor, a scaffold support frame, and a work scaffold frame right-left use, and the work scaffold floor is movable with a scaffolding plate intermediate holding bracket and a scaffolding plate movable The scaffold support frame has at least three hooks for hooking the scaffold and three hooks for preventing the hook from being removed. First, hook the scaffold support frame scaffold hook on the manhole's lap, set the hook disengagement prevention metal fitting, and set the work scaffold frame right for left on the work scaffold floor. Set and assemble, one side of the scaffolding plate of a predetermined length is inserted into the scaffolding plate movable holding bracket, the end point of the scaffolding plate is in close contact with the wall surface of the manhole, and then the scaffolding plate is fixed with the scaffolding plate intermediate holding bracket Characterized by fixing Assembling type scaffolding for manhole tank work