JP2013209830A

JP2013209830A - Floor plate for work in ceiling, and method for movement in ceiling

Info

Publication number: JP2013209830A
Application number: JP2012080129A
Authority: JP
Inventors: Hideyuki Togashi; 秀行冨樫; Masahiro Otsusaka; 正弘乙坂; Norio Owada; 則夫大和田; Kazuhiro Abe; 和広安部
Original assignee: EVER SHOUKAI CO Ltd; EVER-SHOUKAI CO Ltd; East Japan Railway Co
Current assignee: EVER SHOUKAI CO Ltd; EVER-SHOUKAI CO Ltd; East Japan Railway Co
Priority date: 2012-03-30
Filing date: 2012-03-30
Publication date: 2013-10-10
Anticipated expiration: 2032-03-30
Also published as: JP5996235B2

Abstract

PROBLEM TO BE SOLVED: To provide a floor plate for work in a ceiling, and a method for movement in the ceiling, which enable handling to be easily performed when light maintenance is performed in the ceiling with a hanging bolt and an obstacle and which enable a worker to move safely and perform work safely.SOLUTION: A floor plate 11 for work in a ceiling includes: a rectangular plate-like floor portion 13; two pairs of arm portions 15 which are protruded while having long side portions 37 extended from both longitudinal ends of each of the pair of parallel long side portions 37 of the floor portion 13, and which become parallel to each other at one longitudinal end and the other longitudinal end, respectively; and a coming-off regulating protrusion 19 which is fixed while protruding downward, to an arm portion undersurface 45 at a protruding tip 47 of each of the arm portions 15.

Description

本発明は、ビルなどの建物における天井内の作業時に足場として使用される天井内作業用床板及び天井内の移動方法に関する。 The present invention relates to an in-ceiling work floor plate used as a scaffold during work in a ceiling in a building such as a building, and a moving method in the ceiling.

ビルや大型施設などの建物の軽量天井下地が用いられる天井構造は、構造躯体の天井面に連結された複数の吊りボルトに複数の野縁受けが吊り下げられ、この複数の野縁受けに対して交差する方向に複数の野縁が取り付けられて軽量天井下地が組まれ、この軽量天井下地の複数の野縁に天井ボードが固定される（特許文献１等参照）。吊りボルトは、一般的に、上階のスラブから９ｍｍのボルトが約９００ｍｍピッチで吊り下げられる。この天井構造のうち、野縁と天井ボード（石膏ボード等）は人の体重を支えるだけの強度はないこのため、天井内は、不注意で野縁や天井ボードに体重を掛けてしまうと、墜落してしまう危険な高所となる。さらに、天井内にはダクトや配管、配線などが張り巡らされており、障害物が多く雑然としていている。暗く視界も限られるので、非常に作業しにくい環境である。従来、このような天井内での作業は、金属製の足場板を野縁受けに載せて敷きこみ、作業床を確保することで行われる。 In ceiling structures that use lightweight ceiling foundations for buildings such as buildings and large facilities, multiple field receivers are suspended from multiple suspension bolts connected to the ceiling surface of the structural frame. A plurality of field edges are attached in the intersecting direction to form a lightweight ceiling foundation, and a ceiling board is fixed to the plurality of field edges of the lightweight ceiling foundation (see Patent Document 1, etc.). As for the suspension bolt, generally, a 9 mm bolt is suspended from an upper floor slab at a pitch of about 900 mm. Of these ceiling structures, the field edge and ceiling board (such as gypsum board) are not strong enough to support human weight, so if you inadvertently apply weight to the field edge or ceiling board, It becomes a dangerous high place that crashes. Furthermore, ducts, piping, wiring, etc. are stretched around the ceiling, and there are many obstacles and it is cluttered. Because it is dark and has limited visibility, it is an extremely difficult environment to work with. Conventionally, such work in the ceiling is carried out by placing a metal scaffolding board on a field guard and securing a work floor.

特開２０１１−２１４２４号公報JP 2011-21424 A

しかしながら、足場板の敷きこみは容易ではなく手間と時間がかかるため、ちょっとしたメンテナンス（以下、「軽メンテナンス」と呼ぶ）の際は、足場板を敷かず、吊りボルトを手で握り、巾１２ｍｍの野縁受けに足を掛け、天井内を移動するといったことも行われることがあった。また、点検等の作業を行う際も、安定した足元が確保されておらず、場合によっては人の注意力のみで墜落防止を図っている。この状況で、万がー、野縁受けから足を踏み外すと、天井を踏み抜き、天井の下まで、落下する危険性もある。大掛かりな天井内工事では、安全基準に則り足場板が敷かれ安全性が確保されているが、軽メンテナンスの際は、この基準が守られていないことが多い。軽メンテナンスにおいて、安全が確保されないケースが多いのは、既存の足場板は２〜４ｍあり、天井内に上げるのが容易でないことや、天井内には約９００ｍｍピッチで吊りボルトが下げられているため、足場板を取り回すのが難しいことが理由に挙げられる。このため、点検や補修など短時間で終わる作業では足場板を使わず、安全対策をしないまま作業が行われているケースが少なくない。また、従来の足場板は重く長いので、天井点検口から入れ辛いことがあり、天井内の高さが低い場合や、周囲の壁の存在で、足場板を入れる向きによっては天井内に入れることが不可能な場合もある。さらに、足場板は野縁受けに対してほぼ直角の向きにしか配置できないため、天井点検口から作業スポットまでの通路を確保できない場合もある。 However, laying the scaffolding board is not easy and takes time and effort. For a little maintenance (hereinafter referred to as “light maintenance”), do not lay the scaffolding board, hold the suspension bolt by hand, In some cases, people stepped on the ledge and moved around the ceiling. Also, when performing work such as inspection, a stable foot is not ensured, and in some cases, a fall is prevented only by human attention. In this situation, if you take your foot off the edge of the field guard, there is a risk of stepping over the ceiling and falling to the bottom of the ceiling. In large-scale ceiling works, scaffolding boards are laid according to safety standards to ensure safety, but this standard is often not observed during light maintenance. In light maintenance, there are many cases where safety is not secured in many cases. The existing scaffolding plate is 2 to 4 m, and it is not easy to raise it into the ceiling, and suspension bolts are lowered at a pitch of about 900 mm in the ceiling. Therefore, it is mentioned that it is difficult to manage the scaffolding board. For this reason, there are many cases in which work is performed without safety measures without using a scaffolding plate in work that is completed in a short time such as inspection and repair. Also, since the conventional scaffolding board is heavy and long, it may be difficult to insert from the ceiling inspection port, and if the height in the ceiling is low or there is a surrounding wall, depending on the orientation of the scaffolding board, it should be put in the ceiling May not be possible. Furthermore, since the scaffolding plate can only be arranged in a direction substantially perpendicular to the field receiver, it may not be possible to secure a passage from the ceiling inspection opening to the work spot.

本発明は上記状況に鑑みてなされたもので、その目的は、吊りボルトや配管などの障害物がある天井内で、軽メンテナンス等を行う際、容易に取り回しができ、作業者が安全に移動し、安全に作業できる天井内作業用床板及び天井内の移動方法を提供することにある。 The present invention has been made in view of the above situation, and its purpose is to allow easy handling when a light maintenance or the like is performed in a ceiling where there are obstacles such as suspension bolts and piping, and the operator can move safely. It is another object of the present invention to provide a ceiling work floor plate that can be safely operated and a method for moving the ceiling.

次に、上記の課題を解決するための手段を、実施の形態に対応する図面を参照して説明する。
本発明の請求項１記載の天井内作業用床板１１は、矩形板状の床部１３と、
前記床部１３の一対の平行な長辺部３７のそれぞれの長手方向両端から前記長辺部３７が延長されて突出し長手方向一端及び長手方向他端でそれぞれ平行となる二対の腕部１５と、
それぞれの前記腕部１５における前記突出先端４７の前記腕部下面４５に下方へ突出して固定される脱落規制凸部１９と、
を具備することを特徴とする。 Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
In the ceiling work floor plate 11 according to claim 1 of the present invention, a rectangular plate-like floor portion 13,
Two pairs of arm portions 15 extending from both ends in the longitudinal direction of the pair of parallel long side portions 37 of the floor portion 13 and extending in parallel with each other at one end in the longitudinal direction and the other end in the longitudinal direction; ,
A drop-out restricting convex portion 19 that protrudes downward and is fixed to the lower surface 45 of the arm portion of the protruding tip 47 of each arm portion 15;
It is characterized by comprising.

この天井内作業用床板１１では、一対の平行な野縁受け２３の一方に、長手方向一端側の一対の腕部１５が掛けられ、野縁受け２３の他方に、長手方向他端側の一対の腕部１５が掛けられて、一対の平行な野縁受け２３の間に天井内作業用床板１１が架け渡される。吊りボルト２５に支持されている野縁受け部分に架け渡す場合であっても、吊りボルト２５を一対の腕部１５の間で避けるように（跨ぐように）位置させて、腕部１５を野縁受け２３に掛けることが可能となる。この際、仮に腕部１５が野縁受け２３に直交する方向で滑った場合であっても、腕部１５の突出先端４７で脱落規制凸部１９が野縁受け２３に当たり、野縁受け２３からの腕部１５の脱落、すなわち、天井内作業用床板１１の野縁受け２３からの脱落が防止され、安全な作業が確保される。 In the ceiling work floor plate 11, a pair of arm portions 15 on one end in the longitudinal direction is hung on one of a pair of parallel field receivers 23, and a pair on the other end in the longitudinal direction is hung on the other side of the field receiver 23. The work floor plate 11 in the ceiling is bridged between a pair of parallel edge receivers 23. Even when it is bridged over the field edge receiving portion supported by the suspension bolt 25, the suspension bolt 25 is positioned so as to avoid (straddle) between the pair of arm portions 15, and the arm portion 15 It can be hung on the edge receiver 23. At this time, even if the arm portion 15 slips in a direction perpendicular to the field edge receiver 23, the drop-out restricting projection 19 hits the field edge receiver 23 at the projecting tip 47 of the arm section 15, and from the field edge receiver 23. The arm portion 15 is prevented from falling off, that is, the floor plate 11 for work in the ceiling is prevented from falling off from the field receiver 23, and safe work is ensured.

本発明の請求項２記載の天井内作業用床板１１は、請求項１記載の天井内作業用床板１１であって、
前記二対の腕部１５は、前記長辺部３７に沿って連続して１本の柱状部材３９を一対で構成し、これら柱状部材３９の各両端部分を前記腕部１５として構成することを特徴とする。 The ceiling work floor 11 according to claim 2 of the present invention is the ceiling work floor 11 according to claim 1,
The two pairs of arm portions 15 are configured as a pair of one columnar member 39 continuously along the long side portion 37, and each end portion of the columnar member 39 is configured as the arm portion 15. Features.

この天井内作業用床板１１では、各腕部１５が、長辺部３７に沿う連続した柱状部材３９の両端部分であることで、堅固な構造体となり、一対の野縁受け２３に安定して架け渡される。 In this ceiling work floor plate 11, each arm portion 15 is a both end portion of the continuous columnar member 39 along the long side portion 37, so that a solid structure is formed and the pair of field receivers 23 are stably provided. It is bridged.

本発明の請求項３記載の天井内作業用床板１１は、請求項１または２記載の天井内作業用床板１１であって、
前記腕部１５には、同一平面上で複数の前記天井内作業用床板１１を、前記腕部１５の突出方向または前記腕部１５の突出方向に直交する方向に連結する連結部５９が設けられていることを特徴とする。 The ceiling work floor plate 11 according to claim 3 of the present invention is the ceiling work floor plate 11 according to claim 1 or 2,
The arm portion 15 is provided with a connecting portion 59 that connects the plurality of ceiling work floor plates 11 on the same plane in a protruding direction of the arm portion 15 or a direction orthogonal to the protruding direction of the arm portion 15. It is characterized by.

この天井内作業用床板１１では、床部１３と平行な同一平面上に、複数の天井内作業用床板１１が配置され、これら隣接する天井内作業用床板１１同士が連結部５９によって連結される。腕部１５同士が連結されて複数の天井内作業用床板１１が長手方向、すなわち直列方向で連結されれば、直線状に長い通路のような天井内仮設足場５７が組まれる。また、腕部１５同士が連結されて複数の天井内作業用床板１１が長手方向に直交する方向、すなわち並列方向で連結されれば、幅広な通路状の天井内仮設足場５７が形成可能、或いは、面積の大きい天井内仮設足場５７、すなわち作業ポイントでの作業スペースを広く確保することができ、工具や部品の展開も容易となり、足元を確保した無理のない姿勢での作業が可能となって、安全性、作業性を向上させることができる。 In this ceiling work floor plate 11, a plurality of ceiling work floor plates 11 are arranged on the same plane parallel to the floor portion 13, and these adjacent ceiling work floor plates 11 are connected by a connecting portion 59. . If the arm portions 15 are connected to each other and the plurality of ceiling work floors 11 are connected in the longitudinal direction, that is, in the series direction, a temporary scaffold 57 in the ceiling like a long linear passage is assembled. Further, if the arm portions 15 are connected to each other and the plurality of in-ceiling work floor plates 11 are connected in a direction perpendicular to the longitudinal direction, that is, in a parallel direction, a wide passage-like temporary scaffold in the ceiling 57 can be formed, or The large temporary ceiling scaffold 57 in the ceiling, that is, the work space at the work point can be secured widely, the deployment of tools and parts is facilitated, and it is possible to work in a comfortable posture with the foot secured. , Safety and workability can be improved.

本発明の請求項４記載の天井内作業用床板１１は、請求項１または２または３記載の天井内作業用床板１１であって、
前記各腕部１５のいずれか１つには、野縁受け２３に係止する係脱機構６３が設けられていることを特徴とする。 The ceiling work floor 11 according to claim 4 of the present invention is the ceiling work floor 11 according to claim 1, 2 or 3,
One of the arm portions 15 is provided with an engagement / disengagement mechanism 63 that is engaged with the field receiver 23.

この天井内作業用床板１１では、滑り止めシート１７によって野縁受け２３に対する腕部１５の滑りは抑制されるが、床部１３で移動する作業者によって大きな慣性が天井内作業用床板１１に作用した場合であっても、腕部１５に設けられた係脱機構６３が野縁受け２３に係止されることで、腕部１５が野縁受け２３に対して移動しなくなる。例えば上記したような通路状に足場を確保し、作業者が行き来するような際に、容易にズレることなく設置可能となる。 In the ceiling work floor 11, the anti-slip sheet 17 suppresses the slip of the arm portion 15 with respect to the field edge receiver 23, but a large inertia acts on the ceiling work floor 11 by the worker moving on the floor 13. Even in this case, the engaging / disengaging mechanism 63 provided in the arm portion 15 is locked to the field edge receiver 23, so that the arm section 15 does not move relative to the field edge receiver 23. For example, the scaffold can be secured in the shape of the passage as described above, and can be installed without being easily displaced when an operator goes back and forth.

本発明の請求項５記載の天井内作業用床板１１は、請求項１，２，３，４のいずれか１つに記載の天井内作業用床板１１であって、
二枚の前記天井内作業用床板１１を平行に重ねて相互に固定する運搬用固定具７３が前記腕部１５に設けられていることを特徴とする。 The ceiling work floor 11 according to claim 5 of the present invention is the ceiling work floor 11 according to any one of claims 1, 2, 3, and 4,
The arm portion 15 is provided with a transporting fixture 73 for fixing the two work floor plates 11 in the ceiling in parallel to each other and fixing them to each other.

この天井内作業用床板１１では、二枚の天井内作業用床板１１が、寸法の小さい厚み方向で運搬用固定具７３によって一つに重ねてまとめられ、厚み方向での外形寸法が僅かに増えるのみで、運搬効率が二倍となるとともに、収納性が向上し、管理しやすくなる。 In this in-ceiling work floor board 11, the two in-ceiling work floor boards 11 are put together by the transport fixture 73 in the thickness direction having a small dimension, and the external dimensions in the thickness direction are slightly increased. As a result, the transport efficiency is doubled, the storage property is improved, and management is facilitated.

本発明の請求項６記載の天井内の移動方法は、請求項１，２，３，４，５のいずれか１つに記載の天井内作業用床板１１を使用する天井内の移動方法であって、
天井内に複数の前記天井内作業用床板１１を持ち込み、
平行な野縁受け２３のそれぞれに長手方向両端の前記腕部１５を前記野縁受け２３に交差する方向で架け渡し、複数の前記天井内作業用床板１１を長手方向や長手方向に直交する方向に近接配置して天井内仮設足場５７を形成し、前記天井内仮設足場上を移動することを特徴とする。 A moving method in the ceiling according to claim 6 of the present invention is a moving method in the ceiling using the floor plate for work in ceiling 11 according to any one of claims 1, 2, 3, 4 and 5. And
Bring a plurality of ceiling work floors 11 into the ceiling,
The arm portions 15 at both ends in the longitudinal direction are spanned across each of the parallel field receivers 23 in a direction intersecting the field receiver 23, and the plurality of ceiling work floor plates 11 are orthogonal to the longitudinal direction or the longitudinal direction. The temporary scaffold 57 in the ceiling is formed in the vicinity of the temporary scaffold 57 and moves on the temporary scaffold in the ceiling.

この天井内の移動方法では、従来の足場板が搬入できない天井内であっても、短く、軽い天井内作業用床板１１によって搬入が容易となり、特に天井内作業用床板１１が複数長手方向に使用されることで、天井点検口２１から作業ポイントまでを直列方向で連続させることが可能となる。また、互いを並列方向に連結させることで、作業床板面積を大きく形成でき、天井内での移動、すなわち歩行が容易となり、かつ安全となる。また、作業場所が大きく確保され、作業者が複数である場合の移動や、工具や部品の展開も容易となる。 In this method of moving in the ceiling, even if it is in the ceiling where the conventional scaffolding board cannot be carried in, it is easy to carry in by the short and light working floor board 11 in the ceiling. By doing so, it is possible to continue from the ceiling inspection port 21 to the work point in the series direction. Further, by connecting each other in the parallel direction, the work floor board area can be increased, and movement within the ceiling, that is, walking is facilitated and safe. In addition, a large work place is secured, and movement when there are a plurality of workers and deployment of tools and parts are facilitated.

本発明の請求項７記載の天井内の移動方法は、請求項１，２，３，４，５のいずれか１つに記載の天井内作業用床板１１を使用する天井内の移動方法であって、
天井内に少なくとも２枚の前記天井内作業用床板１１を持ち込み、
平行な野縁受け２３のそれぞれに長手方向両端の前記腕部１５を前記野縁受け２３に交差する方向で架け渡し、それぞれの前記天井内作業用床板１１を長手方向や長手方向に直交する方向に近接配置して天井内仮設足場５７を形成するとともに、前記天井内における移動方向に前記天井内作業用床板１１を盛り替えながら、前記天井内仮設足場５７上を移動することを特徴とする。 A moving method in the ceiling according to claim 7 of the present invention is a moving method in the ceiling using the floor plate for work in ceiling according to any one of claims 1, 2, 3, 4 and 5. And
Bring at least two floor boards 11 for work in the ceiling into the ceiling,
The arm portions 15 at both ends in the longitudinal direction are spanned across each of the parallel field receivers 23 in a direction intersecting the field receiver 23, and each of the ceiling work floor plates 11 is orthogonal to the longitudinal direction or the longitudinal direction. The temporary scaffold 57 in the ceiling is formed in proximity to the ceiling, and the temporary work scaffold 11 in the ceiling is moved while the floor plate 11 for work in the ceiling is changed in the moving direction in the ceiling.

この天井内の移動方法では、従来の足場板が搬入できない天井内であっても、短く、軽い天井内作業用床板１１によって搬入が容易となり、２枚の天井内作業用床板１１を盛り替えながら使用することで、天井点検口２１から作業ポイントまで移動することが可能となる。また、作業ポイントにおいて互いを並列方向に連結させることで、作業床板面積を大きく確保することができ、足元を確保しながら工具や部品の展開も容易となり作業性が向上する。 In this method of moving in the ceiling, even within a ceiling where a conventional scaffolding board cannot be carried in, it is easy to carry in by the short and light work floor board 11 in the ceiling, and the two work floor boards 11 in the ceiling are replaced. By using it, it becomes possible to move from the ceiling inspection port 21 to the work point. Further, by connecting each other in the parallel direction at the work point, a large work floor board area can be secured, and the development of tools and parts can be facilitated while securing the foot and workability is improved.

本発明の請求項８記載の天井内の移動方法は、請求項１，２，３，４，５のいずれか１つに記載の天井内作業用床板１１を使用する天井内の移動方法であって、
天井内に２枚以上の前記天井内作業用床板１１を順次持ち込み、
平行な野縁受け２３のそれぞれに長手方向両端の前記腕部１５を前記野縁受け２３に交差する方向で架け渡し、複数の前記天井内作業用床板１１を長手方向や長手方向に直交する方向に近接配置して、天井点検口２１から前記天井内の作業ポイントまでを通路状に連ねて天井内仮設足場５７を形成し、前記天井内仮設足場５７上を移動することを特徴とする。 The moving method in the ceiling according to claim 8 of the present invention is a moving method in the ceiling using the floor plate for work in ceiling 11 according to any one of claims 1, 2, 3, 4 and 5. And
Two or more ceiling work floors 11 in the ceiling are sequentially brought into the ceiling,
The arm portions 15 at both ends in the longitudinal direction are spanned across each of the parallel field receivers 23 in a direction intersecting the field receiver 23, and the plurality of ceiling work floor plates 11 are orthogonal to the longitudinal direction or the longitudinal direction. The temporary scaffolding 57 in the ceiling is formed by connecting the ceiling inspection port 21 to the work point in the ceiling in a path shape, and moves on the temporary scaffolding 57 in the ceiling.

この天井内の移動方法では、従来の足場板が搬入できない天井内であっても、短く、軽い天井内作業用床板１１によって搬入が容易となり、複数の天井内作業用床板１１を天井点検口２１から作業ポイントまで通路状に連ねることで、連続した天井内仮設足場５７として形成でき、頻繁に移動する場合などに好適となる。 In this method of moving in the ceiling, even in a ceiling where a conventional scaffolding board cannot be carried in, it is easy to carry in by the short and light ceiling work floor plate 11, and a plurality of ceiling work floor plates 11 are connected to the ceiling inspection port 21. It is possible to form a continuous ceiling scaffold 57 in the passage from the work point to the work point, which is suitable for frequent movement.

本発明に係る請求項１記載の天井内作業用床板によれば、吊りボルトや障害物がある天井内で、軽メンテナンスを行う際、容易に取り回しができ、一対の野縁間に十分な面積の安定した床部を形成でき、作業者が安全に移動可能であり、足元を確保した状態で安全に作業を行うことができる。 According to the floor plate for work in a ceiling according to claim 1 according to the present invention, when carrying out light maintenance in a ceiling with suspension bolts and obstacles, it can be easily routed and has a sufficient area between a pair of field edges. The stable floor portion can be formed, the operator can move safely, and can work safely with the feet secured.

本発明に係る請求項２記載の天井内作業用床板によれば、各腕部が、長辺部に沿う連続した柱状部材の両端部分であることで、堅固な構造体となり、一対の野縁受けに安定して架け渡すことができる。 According to the floor plate for work in a ceiling according to claim 2 according to the present invention, each arm portion is both end portions of a continuous columnar member along the long side portion, so that a solid structure is formed, and a pair of field edges It can be bridged stably to the receiver.

本発明に係る請求項３記載の天井内作業用床板によれば、野縁受けに架け渡され隣接する天井内作業用床板同士が、連結部によって互いが連結され、直線状の長い天井内仮設足場を形成したり、或いは広い面積の天井内仮設足場、すなわち作業ポイントでの作業スペースを広く確保して形成することができ、工具や部品の展開も容易となるとともに、足元を確保した無理のない姿勢での作業が可能となって、安全性、作業性を向上させることができる。 According to the ceiling work floor plate according to claim 3 of the present invention, the ceiling work floor plates adjacent to each other spanned by the field edge receiver are connected to each other by the connecting portion, and the linear long temporary ceiling installation is performed. It is possible to form a scaffold, or a temporary scaffold in a ceiling with a large area, that is, to secure a wide work space at the work point, and it is easy to deploy tools and parts, and it is impossible to secure a foot Work with no posture is possible, and safety and workability can be improved.

本発明に係る請求項４記載の天井内作業用床板によれば、腕部を係脱機構によって野縁受けに固定でき、野縁受け上での腕部の移動をより確実に防止して、安全性を高めることができる。 According to the floor plate for work in the ceiling according to claim 4 according to the present invention, the arm portion can be fixed to the field edge receiver by the engagement / disengagement mechanism, and the movement of the arm part on the field edge receiver can be more reliably prevented, Safety can be increased.

本発明に係る請求項５記載の天井内作業用床板によれば、二枚の天井内作業用床板を運搬用固定具によって一組に固定でき、片手で二枚の天井内作業用床板、両手で四枚の天井内作業用床板を同時に運搬することができる。また、収納性が向上し、管理しやすくなる。 According to the ceiling work floor plate according to claim 5 of the present invention, the two ceiling work floor plates can be fixed to one set by the transport fixture, and the two ceiling work floor plates, both hands can be fixed with one hand. It is possible to carry four floor boards in the ceiling at the same time. In addition, the storability is improved and management becomes easier.

本発明に係る請求項６記載の天井内の移動方法によれば、作業ポイントまでは直線状に天井内作業用床板を連結した天井内仮設足場によって安全に、かつ、迅速に移動できる。作業ポイントにおいては、例えば並列に天井内作業用床板を連結した天井内仮設足場によって、所望の作業位置へ移動でき、無理のない姿勢での作業が可能となり、作業性を向上させることができる。 According to the moving method in the ceiling according to the sixth aspect of the present invention, the work point can be moved safely and quickly by the temporary scaffold in the ceiling in which the work floors in the ceiling are linearly connected. The work point can be moved to a desired work position by a temporary scaffold in the ceiling in which work floors in the ceiling are connected in parallel, for example, and can be operated in a comfortable posture, thereby improving workability.

本発明に係る請求項７記載の天井内の移動方法によれば、従来の足場板が搬入できない天井内であっても、この天井内作業用床板によって搬入が容易となるとともに２枚の天井内作業用床板を盛り替えながら使用することで、天井点検口から作業ポイントまで移動することが可能となる。そして、短く、軽い構成の天井内作業用床板は、簡単な作業などにおいて、容易に足場を構成でき、天井内の移動に安全に使用できる。また、作業ポイントにおいて互いを並列方向に連結させることで、作業床板面積を大きく確保することができ、足元を確保しながら工具や部品の展開も容易となり作業性が向上する。 According to the moving method in the ceiling according to the seventh aspect of the present invention, even in the ceiling where the conventional scaffold board cannot be carried in, the work floor board in the ceiling facilitates the carrying in and the two inside the ceiling. It is possible to move from the ceiling inspection port to the work point by using the work floor plate while changing the size. The short and light construction floor board for work in the ceiling can easily form a scaffold in simple work and can be used safely for movement in the ceiling. Further, by connecting each other in the parallel direction at the work point, a large work floor board area can be secured, and the development of tools and parts can be facilitated while securing the foot and workability is improved.

本発明に係る請求項８記載の天井内の移動方法によれば、従来の足場板が搬入できない天井内であっても、短く、軽い天井内作業用床板によって搬入が容易となり、複数の天井内作業用床板を天井点検口から作業ポイントまで通路状に連ねることで、連続した天井内仮設足場として形成することができるもので、天井内の作業において頻繁に移動する場合などに好適となる。 According to the moving method in the ceiling according to the eighth aspect of the present invention, even in a ceiling where a conventional scaffold board cannot be carried in, it is easy to carry in by a short and light work floor board in the ceiling, and the inside of the plurality of ceilings By connecting the working floor board in the form of a passage from the ceiling inspection port to the work point, it can be formed as a continuous temporary scaffold in the ceiling, which is suitable when moving frequently in the work in the ceiling.

（ａ）は本発明に係る天井内作業用床板の斜視図、（ｂ）は（ａ）に示した腕部下面の斜視図、（ｃ）は（ａ）の天井内作業用床板を長手方向一端側から見た正断面図である。(A) is a perspective view of a floor board for work in the ceiling according to the present invention, (b) is a perspective view of the lower surface of the arm shown in (a), (c) is a longitudinal direction of the floor board for work in ceiling in (a) It is the front sectional view seen from one end side. 野縁受けに架け渡された天井内作業用床板の斜視図である。It is a perspective view of the floor board for work in a ceiling spanned over the field edge receiver. 天井点検口の近傍に設けられた天井内作業用床板の斜視図である。It is a perspective view of the floor board for work in a ceiling provided in the vicinity of the ceiling inspection opening. 天井内において直列方向に並べられた天井内作業用床板の平面図である。It is a top view of the floor board for work in a ceiling arranged in the serial direction in the ceiling. 天井内において並列方向に並べられた天井内作業用床板の平面図である。It is a top view of the floor board for work in a ceiling arranged in the parallel direction in the ceiling. （ａ）は連結前の天井内作業用床板の正面図、（ｂ）は連結部によって連結された天井内作業用床板の正面図である。(A) is a front view of the floor board for work in a ceiling before connection, (b) is a front view of the floor board for work in a ceiling connected by the connection part. 係脱機構によって野縁受けに係止される腕部の側面図である。It is a side view of the arm part latched by a field receiver by an engagement / disengagement mechanism. 運搬用固定具によって重ねられた二枚の天井内作業用床板の斜視図である。It is a perspective view of the two floor boards for work in a ceiling piled up by the fixing tool for conveyance.

以下、本発明に係る実施形態を図面を参照して説明する。
図１（ａ）は本発明に係る天井内作業用床板の斜視図、（ｂ）は（ａ）に示した腕部下面の斜視図、（ｃ）は（ａ）の天井内作業用床板を長手方向一端側から見た正断面図、図２は野縁受けに架け渡された天井内作業用床板の斜視図である。
本実施形態に係る天井内作業用床板１１は、床部１３と、腕部１５と、脱落規制凸部１９と、を主要な構成部材として有している。 Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1A is a perspective view of a floor board for work in the ceiling according to the present invention, FIG. 1B is a perspective view of the lower surface of the arm shown in FIG. 1A, and FIG. FIG. 2 is a perspective view of a floor board for work in the ceiling spanned over a field edge receiver.
The in-ceiling work floor plate 11 according to the present embodiment includes a floor portion 13, an arm portion 15, and a drop-off restricting convex portion 19 as main components.

本発明の天井内作業用床板１１は、これらの構成要素によって、
・天井点検口２１（図２参照）から、搬入及び搬出できること，
・軽量、容易に持ち込み設置することができること，
・十分な強度を有すること，
・設置した際、安定すること，
を要件とするとともに、既存の足場板は天井内で使うことを前提としておらず、天井内で取り回すのは極めて不便であったのに対し、天井内作業用床板１１は天井内で使うことを前提に、軽く、コンパクトで扱いやすいことを追求した。
さらに、本発明の天井内作業用床板１１においては、幅長Ｗは一般的な天井点検口２１の寸法４５５ｍｍ×４５５ｍｍに入るサイズを最大として３６０ｍｍ程度とし、全長Ｌは床部１３を支持する野縁受け２３（図２参照）の一般的な間隔である約９００ｍｍを考慮した長さ１１００ｍｍ程度とし、大人１名の荷重に十分耐えられる強度を持つこととする。なお、材質は軽量で強度のある例えばアルミやアルミ合金等の軽金属や、繊維素材を補強材に用いた強化プラスチック等とすることができる。 The ceiling work floor plate 11 of the present invention has these components,
-Carrying in and out of the ceiling inspection port 21 (see Fig. 2),
・ Lightweight, easy to carry and install,
・ Having sufficient strength,
・ Stabilize when installed,
The existing scaffold board is not intended to be used in the ceiling, and it was extremely inconvenient to run in the ceiling, whereas the work floor board 11 in the ceiling should be used in the ceiling. Based on the above, we pursued lightness, compactness and easy handling.
Furthermore, in the floorboard 11 for work in a ceiling of this invention, the width length W is about 360 mm at the maximum which enters into the dimension 455 mm x 455 mm of the general ceiling inspection port 21, and the full length L is the field which supports the floor part 13. The length is about 1100 mm considering about 900 mm, which is a general interval between the edge receivers 23 (see FIG. 2), and has sufficient strength to withstand the load of one adult. The material may be light and strong, for example, a light metal such as aluminum or aluminum alloy, or a reinforced plastic using a fiber material as a reinforcing material.

天井内作業用床板１１は、図２に示す軽量天井下地２７が組まれる天井構造に使用される。この天井構造は、構造躯体の天井面である天井スラブに連結された複数の吊りボルト２５に、複数の野縁受け２３がハンガー２９によって吊り下げられる。吊りボルト２５は、一般的に、９ｍｍのボルトよりなり、上階のスラブから約９００ｍｍピッチで縦横に吊り下げられる。複数の野縁受け２３に対しては、野縁受け２３の長手方向に交差する方向に複数の野縁３１がクリップ３３によって取り付けられる。このようにして略格子状に組まれた軽量天井下地２７には、複数の野縁３１に天井ボード３５が固定され屋内での天井面となる。 The work floor 11 in the ceiling is used for a ceiling structure on which a lightweight ceiling base 27 shown in FIG. 2 is assembled. In this ceiling structure, a plurality of field edge receivers 23 are suspended by hangers 29 on a plurality of suspension bolts 25 connected to a ceiling slab that is a ceiling surface of the structural frame. The suspension bolts 25 are generally 9 mm bolts and are suspended vertically and horizontally from a slab on the upper floor at a pitch of about 900 mm. A plurality of field edges 31 are attached to the plurality of field edge receivers 23 by clips 33 in a direction intersecting the longitudinal direction of the field edge receiver 23. In this way, the ceiling board 35 is fixed to a plurality of field edges 31 in the lightweight ceiling base 27 assembled in a substantially lattice shape to form an indoor ceiling surface.

図１（ａ）に示すように、天井内作業用床板１１を構成する床部１３は、矩形板状に形成される。腕部１５は、床部１３の一対の平行な長辺部３７のそれぞれの長手方向両端から長辺部３７が延長されて突出し、長手方向一端及び長手方向他端でそれぞれ平行となるように二対となって設けられる。より具体的には、長辺部３７と腕部１５とには、長辺部３７に沿って連続して１本の全長Ｌ（１１００ｍｍ）の柱状部材としての主角パイプ３９を用いることができる。主角パイプ３９は、対となる二本が幅Ｗに離間されて、その間が直交方向の二本の副角パイプ４１によって連結される。床部１３は、主角パイプ３９と副角パイプ４１とに包囲された矩形領域に形成される。図１（ｃ）に示すように、床部１３は、例えば断面Ｃ字状のＣ形チャンネル材４３が、主角パイプ３９と平行に複数並べられて略板状に形成される。このＣ形チャンネル材４３は、長さＬｆを約６６０ｍｍとされ、本実施形態では３つ１組とされる（図１参照）。なお、主角パイプ３９、副角パイプ４１、チャンネル材４３のそれぞれは、例えば溶接により互いが固定される。これにより、天井内作業用床板１１は、平面視でＨ形状に形成される。本実施形態では、床部１３から長辺部３７に沿って主角パイプ３９の両端が突出し、これら両端部分が腕部１５となり、各腕部１５が２００ｍｍずつ延出することとなる。そして、Ｈ形状とすることで、天井内作業用床板１１は、天井内で障害物や吊りボルト２５を避けながら、どの方向にも配置が可能となる。また、Ｈ形状とすることで、各腕部１５が互い違いな位置として隣接する天井内作業用床板１１を野縁受け２３上に配置可能となり、縦方向、すなわち直列方向にも連結配置が可能となる。 As shown to Fig.1 (a), the floor part 13 which comprises the floor board 11 for work in a ceiling is formed in rectangular plate shape. The arm portion 15 protrudes with the long side portion 37 extending from both ends in the longitudinal direction of the pair of parallel long side portions 37 of the floor portion 13 and is parallel to each other at one end in the longitudinal direction and at the other end in the longitudinal direction. It is provided in pairs. More specifically, a main angle pipe 39 as a columnar member having a full length L (1100 mm) can be used continuously for the long side portion 37 and the arm portion 15 along the long side portion 37. Two main angle pipes 39 are separated by a width W, and the two are connected by two sub angle pipes 41 in the orthogonal direction. The floor portion 13 is formed in a rectangular region surrounded by the main angle pipe 39 and the sub angle pipe 41. As shown in FIG. 1C, the floor portion 13 is formed in a substantially plate shape, for example, a plurality of C-shaped channel members 43 having a C-shaped cross section are arranged in parallel with the main angle pipe 39. The C-shaped channel member 43 has a length Lf of about 660 mm, and in this embodiment, a set of three (see FIG. 1). In addition, each of the main angle pipe 39, the sub angle pipe 41, and the channel material 43 is mutually fixed by welding, for example. Thereby, the floor board 11 for work in a ceiling is formed in H shape by planar view. In the present embodiment, both ends of the main angle pipe 39 project from the floor portion 13 along the long side portion 37, and both end portions become the arm portions 15, and each arm portion 15 extends by 200 mm. And by setting it as H shape, the floorboard 11 for work in a ceiling can be arrange | positioned in any direction, avoiding an obstruction and the suspension bolt 25 in a ceiling. In addition, by adopting an H shape, it is possible to arrange the work floor plates 11 in the ceiling adjacent to each other with the arm portions 15 in a staggered position on the field receiver 23, and it is possible to connect and arrange them in the vertical direction, that is, in the serial direction. Become.

図２に示すように、主角パイプ３９は、野縁受け２３に置いた際、滑りにくくするように、腕部１５の幅Ｄ（図１（ｃ）参照）を３０ｍｍと大きくとっている。また、設置面となる腕部下面４５には、突出先端４７から突出基端４９に向かって所定の長さで滑り止めシート１７が貼着されてもよい。滑り止めシート１７は、例えばゴム板とすることができる。なお、腕部下面４５自体を凹凸面やギザギザ面などに成形することとしてもよい。 As shown in FIG. 2, the main angle pipe 39 has a large width D (see FIG. 1C) of 30 mm so that it is less likely to slip when placed on the field receiver 23. Further, the anti-slip sheet 17 may be attached to the arm lower surface 45 serving as an installation surface with a predetermined length from the protruding tip 47 toward the protruding base end 49. The non-slip sheet 17 can be a rubber plate, for example. In addition, it is good also as shape | molding the arm part lower surface 45 itself in an uneven surface or a jagged surface.

それぞれの腕部１５における突出先端４７の腕部下面４５には、下方へ突出して固定される脱落規制凸部１９が設けられる。脱落規制凸部１９は、例えばゴム製の柱体、或いはゴム材で被覆された金属製柱体とすることができる。 On the arm portion lower surface 45 of the projecting tip 47 of each arm portion 15, a drop-out restricting convex portion 19 that protrudes downward and is fixed is provided. The drop-out restricting convex portion 19 can be, for example, a rubber column or a metal column covered with a rubber material.

また、主角パイプ３９の側面には、長手方向の中央部に、コ字状の把手５１が固定される。把手５１は、少なくとも一方の主角パイプ３９に設けられており、持ち運びを考慮して、邪魔にならない位置に手指が挿入される程度の大きさで形成される。この把手５１にて支持されることで、天井内作業用床板１１は、長手方向を前後に、床部１３が鉛直面と平行となる姿勢（図８参照）で持ち運びされる。 Further, a U-shaped handle 51 is fixed to the side surface of the main angle pipe 39 at the center in the longitudinal direction. The handle 51 is provided on at least one of the main angle pipes 39, and is formed with a size that allows fingers to be inserted in a position that does not interfere with the carrying in consideration of carrying. By being supported by this handle 51, the work floor board 11 in the ceiling is carried in a posture (see FIG. 8) in which the floor portion 13 is parallel to the vertical plane with the longitudinal direction being front and rear.

上記構成を有する天井内作業用床板１１の作用を説明する。
図３は天井点検口２１の近傍に設けられた天井内作業用床板１１の斜視図、図４は天井内において直列方向に並べられた天井内作業用床板１１の平面図、図５は天井内において並列方向に並べられた天井内作業用床板１１の平面図である。
天井内作業用床板１１は、特に軽メンテナンスに好適に用いることができる。ここで、軽メンテナンスは以下のように定義する。
・作業時間：３０分から１時間程度
・人数：作業者１人、補助者１人程度
・使用目的：天井内での点検作業，空調や配管からの水漏れ簡易な補修，部品交換作業，配管のバルブの開閉作業など
・移動距雛：天井点検口２１から作業箇所まで、数ｍ〜１０ｍ程度
とする。 The operation of the ceiling work floor 11 having the above configuration will be described.
3 is a perspective view of the ceiling work floor plate 11 provided in the vicinity of the ceiling inspection port 21, FIG. 4 is a plan view of the ceiling work floor plates 11 arranged in series in the ceiling, and FIG. It is a top view of the floorboard 11 for work in a ceiling arranged in the parallel direction in FIG.
The floor plate 11 for work in a ceiling can be used suitably especially for light maintenance. Here, light maintenance is defined as follows.
・ Working time: About 30 minutes to 1 hour ・ Number of people: 1 worker, 1 assistant ・ Purpose of use: Inspection work in the ceiling, simple repair of water leakage from air conditioning and piping, parts replacement work, piping Valve opening / closing operation, etc. • Moving distance: The distance from the ceiling inspection port 21 to the work location should be several meters to 10 meters.

軽メンテナンスを行う際、作業者Ａは、先ず、天井点検口２１の下方に設置した脚立を上り、天井点検口蓋を開く。脚立をさらに上り、図３に示すように、開口した天井点検口２１から天井内に上半身を進入させる。補助者より受け取った天井内作業用床板１１を天井点検口２１から挿入して、天井内作業用床板１１を天井点検口２１の近傍の野縁受け２３に架け渡す。この際、天井内作業用床板１１は、一対の平行な野縁受け２３の一方に、長手方向一端側の一対の腕部１５が掛けられ、野縁受け２３の他方に、長手方向他端側の一対の腕部１５が掛けられて、一対の平行な野縁受け２３の間に天井内作業用床板１１が架け渡される。 When performing light maintenance, the worker A first climbs the stepladder installed below the ceiling inspection port 21 and opens the ceiling inspection port lid. The stepladder is further raised, and the upper body is made to enter the ceiling through the opened ceiling inspection port 21 as shown in FIG. The in-ceiling work floor plate 11 received from the assistant is inserted from the ceiling inspection port 21, and the in-ceiling work floor plate 11 is bridged to the edge receiver 23 near the ceiling inspection port 21. At this time, in the ceiling work floor plate 11, a pair of arm portions 15 on one end side in the longitudinal direction is hung on one side of the pair of parallel field receivers 23, and the other end side in the longitudinal direction is placed on the other side of the field receiver 23. A pair of arm portions 15 are hung, and the work floor plate 11 in the ceiling is bridged between the pair of parallel edge receivers 23.

天井内作業用床板１１は、吊りボルト２５に支持されている野縁受け部分に架け渡す場合であっても、図例のように、吊りボルト２５を一対の腕部１５の間でかわし、この吊りボルト２５を避けて、腕部１５を野縁受け２３に掛けることが可能となる。この際、腕部下面４５の滑り止めシート１７（図１参照）が野縁受け２３に接し、野縁受け上での腕部１５の滑りが抑制され、床部上での安定した作業が可能となる。仮に腕部１５が野縁受け２３に直交する方向で滑った場合であっても、腕部１５の突出先端４７で脱落規制凸部１９が野縁受け２３に当たり、野縁受け２３からの腕部１５の脱落、すなわち、天井内作業用床板１１の野縁受け２３からの脱落が防止され、安全な作業が確保される。また、この脱落規制凸部１９があることで、この天井内作業用床板１１を長手方向一方から野縁受け２３上に載置する際に、脱落規制凸部１９を引っ掛けて掛止状態とさせることができ、野縁受け２３に対して確実に腕部１５が載ることを確認しながら架け渡すことが可能となる。 Even in the case where the work floor board 11 in the ceiling is bridged to the edge receiving portion supported by the suspension bolt 25, the suspension bolt 25 is exchanged between the pair of arm portions 15 as shown in the figure. The arm portion 15 can be hung on the field edge receiver 23 while avoiding the suspension bolt 25. At this time, the non-slip sheet 17 (see FIG. 1) on the lower surface 45 of the arm portion is in contact with the field edge receiver 23, and the sliding of the arm section 15 on the field edge receiver is suppressed, enabling stable work on the floor. It becomes. Even if the arm portion 15 slips in a direction orthogonal to the field edge receiver 23, the drop-out restricting projection 19 hits the field edge receiver 23 at the protruding tip 47 of the arm section 15, and the arm portion from the field edge receiver 23. 15, that is, detachment of the work floor plate 11 in the ceiling from the edge receiver 23 is prevented, and safe work is ensured. Moreover, when this drop-out restricting convex portion 19 is provided, the drop-out restricting convex portion 19 is hooked and put into a hooked state when the in-ceiling work floor plate 11 is placed on the field receiver 23 from one longitudinal direction. Thus, it is possible to bridge the arm portion 15 while confirming that the arm portion 15 is surely placed on the field receiver 23.

このようにして天井点検口２１の近傍に天井内作業用床板１１が設けられることで、作業者Ａは、天井点検口２１から直ぐに、両手をかけ、安定して体重をあずけて踏ん張ることができ、安全性が向上する。 In this way, the floor plate 11 for work in the ceiling is provided in the vicinity of the ceiling inspection port 21, so that the worker A can put both hands immediately from the ceiling inspection port 21, stably weight and step on. , Improve safety.

次いで、天井内には、複数の天井内作業用床板１１が持ち込まれる。複数の天井内作業用床板１１は、平行な野縁受け２３のそれぞれに長手方向両端の腕部１５を載置して野縁受け２３に交差する方向で架け渡される。複数の天井内作業用床板１１は、図４に示すように、互いの腕部１５を互い違いに位置させて、長手方向、すなわち直列方向に近接配置して天井内仮設足場５７を形成したり、図５に示すように、腕部１５同士が隣り合うように位置させて、長手方向に直交する方向、すなわち並列方向に近接配置したりして天井内仮設足場５７を形成する。なお、並列方向の配置の際は、作業者の移動時に足を踏み外すようなことが無い程度の隙間をあけて並べることとしてもよく、その場合、天井内に配置する天井内作業用床板１１の持ち込み数を削減することができる。また、足元を確保するような場合には、お互いを出来るだけ近接させ、広面積な状態を得るようにする。 Next, a plurality of in-ceiling work floor boards 11 are brought into the ceiling. The plurality of in-ceiling work floor boards 11 are bridged in a direction intersecting the field edge receiver 23 by placing the arm portions 15 at both ends in the longitudinal direction on each of the parallel field edge receivers 23. As shown in FIG. 4, the plurality of work floor plates 11 in the ceiling are arranged alternately in the longitudinal direction, that is, in the series direction by alternately positioning the arm portions 15 to form a temporary scaffold 57 in the ceiling, As shown in FIG. 5, the arm portions 15 are positioned so as to be adjacent to each other, and are arranged close to each other in the direction orthogonal to the longitudinal direction, that is, in the parallel direction, to form the temporary scaffold 57 in the ceiling. In the case of the arrangement in the parallel direction, it may be arranged with a gap so as not to step off when the operator moves. In that case, the floorboard 11 for work in the ceiling to be arranged in the ceiling The number of carry-in can be reduced. In addition, when securing the feet, they should be as close as possible to obtain a large area.

天井内作業用床板１１を用いた天井内の移動方法では、このようにして形成した天井内仮設足場上を移動する。この天井内の移動方法では、従来の足場板が搬入できない天井内であっても、短く、軽い天井内作業用床板１１によって搬入が容易となる。図４に示すように、特に天井内作業用床板１１が複数長手方向に使用されることで、天井点検口２１から作業ポイントまでを直列方向で通路のように連続させることが可能となる。図５に示すように、互いを並列方向に連結させることで、作業床板面積を大きく形成でき、歩行，移動が容易となり、かつ安全となる。また、作業場所を大きく確保することができ、作業ポイントでの足場の確保を行え、作業者が複数である場合の移動や、作業ポイントでの工具や部品の展開も容易となる。 In the method of moving in the ceiling using the floor plate 11 for work in the ceiling, it moves on the temporary scaffold in the ceiling formed in this way. In this method of moving in the ceiling, even in a ceiling where a conventional scaffold board cannot be carried in, it is easy to carry in by the short and light work floor board 11 in the ceiling. As shown in FIG. 4, in particular, by using a plurality of in-ceiling work floor boards 11 in the longitudinal direction, it is possible to continue from the ceiling inspection port 21 to the work point like a passage in the series direction. As shown in FIG. 5, by connecting each other in the parallel direction, the work floor board area can be formed large, walking and movement are facilitated and safe. In addition, a large work place can be secured, a foothold can be secured at the work point, and movement when there are a plurality of workers and deployment of tools and parts at the work point are facilitated.

このように、本発明の天井内作業用床板１１を導入することで、従来の重くて長く取り回しの不便な足場板を使う煩わしさは無くなり、これまで安全確保が困難であった短時間で終わる点検・補修作業でも安全に作業ができるようになる。そして、この天井内作業用床板１１を導入することにより、天井ボード３５を踏み抜く事故や災害等を低減させることが期待できる。 Thus, by introducing the floor plate 11 for work in a ceiling of the present invention, the troublesomeness of using a conventional heavy and long inconvenient scaffolding plate is eliminated, and it ends in a short time that it has been difficult to ensure safety so far. It will be possible to work safely even during inspection and repair work. Then, by introducing the floor plate 11 for work in the ceiling, it can be expected that accidents, disasters, and the like of stepping over the ceiling board 35 are reduced.

次に、天井内作業用床板１１の変形例を説明する。
図６（ａ）は連結前の天井内作業用床板１１の正面図、（ｂ）は連結部５９によって連結された天井内作業用床板１１の正面図である。
天井内作業用床板１１は、腕部１５に、同一平面上で複数の天井内作業用床板１１を、腕部１５の突出方向または腕部１５の突出方向に直交する方向に連結する連結部５９が設けられていてもよい。連結部５９は、例えば係合環５３と、フック６１とによって構成される。床部１３と平行な同一平面上に、複数の天井内作業用床板１１が配置され、これら隣接する天井内作業用床板同士が連結部５９によって連結される。腕部同士が連結されて複数の天井内作業用床板１１が長手方向、すなわち直列方向で連結されれば、直線状に長い天井内仮設足場５７が組まれる。腕部同士が近接し連結されて複数の天井内作業用床板１１が長手方向に直交する方向、すなわち並列方向で連結されれば、面積の大きい天井内仮設足場５７が形成可能となる。これにより、野縁受け２３に架け渡される隣接の天井内作業用床板同士が連結部５９によって連結され、直線状の長い天井内仮設足場５７や、広い面積の天井内仮設足場５７を容易に組むことができる。 Next, a modification of the ceiling work floor 11 will be described.
FIG. 6A is a front view of the ceiling work floor plate 11 before connection, and FIG. 6B is a front view of the ceiling work floor plate 11 connected by the connecting portion 59.
The in-ceiling work floor plate 11 is connected to the arm portion 15 by a connecting portion 59 for connecting a plurality of in-ceiling work floor plates 11 on the same plane in a direction perpendicular to the projecting direction of the arm portion 15 or the projecting direction of the arm portion 15. May be provided. The connection part 59 is comprised by the engagement ring 53 and the hook 61, for example. A plurality of in-ceiling work floor plates 11 are arranged on the same plane parallel to the floor portion 13, and these adjacent in-ceiling work floor plates are connected by a connecting portion 59. If the arm portions are connected to each other and the plurality of in-ceiling work floor boards 11 are connected in the longitudinal direction, that is, in the series direction, the temporary scaffold 57 in the ceiling that is linearly long is assembled. If the arm portions are close to each other and connected to each other, and the plurality of in-ceiling work floor boards 11 are connected in a direction perpendicular to the longitudinal direction, that is, in a parallel direction, a temporary ceiling scaffold 57 with a large area can be formed. As a result, the adjacent ceiling work floors spanning the field receiver 23 are connected to each other by the connecting portion 59, so that a straight long temporary ceiling scaffold 57 and a large area temporary ceiling scaffold 57 can be easily assembled. be able to.

図７は係脱機構６３によって野縁受け２３に係止される腕部１５の側面図である。
天井内作業用床板１１は、各腕部１５のいずれか１つに、野縁受け２３に係止する係脱機構６３が設けられていることが好ましい。係脱機構６３は、揺動軸６５を挟み一方にストッパ６７を固定し、他方に揺動自在に係止爪６９を設ける。係止爪６９は図示しないバネ等の付勢手段によってストッパ６７に接近する回転方向に付勢される。これにより、腕部１５を野縁受け２３に置く際に、係止爪６９が図例のように野縁受け２３に係止し、脱落を防止する。係脱機構６３は、天井内作業用床板１１の少なくとも長手方向一端側の腕部１５に設けられる。一端側とするのは、野縁受け２３の間隔距離が異なる場合があり、両端のものが同時に使用できない場合があるからである。なお、腕部１５の一端側に係脱機構６３を固定配置し、他端側には腕部１５に沿ってスライド可能な係脱機構を設ける構成とすることで、野縁受け２３の間隔距離が異なる場合に対応が可能である。 FIG. 7 is a side view of the arm portion 15 that is locked to the field edge receiver 23 by the engagement / disengagement mechanism 63.
In the ceiling work floor plate 11, it is preferable that an engagement / disengagement mechanism 63 that is engaged with the field edge receiver 23 is provided on any one of the arms 15. The engagement / disengagement mechanism 63 has a stopper 67 fixed on one side with a swing shaft 65 interposed therebetween, and a locking claw 69 provided on the other side so as to be swingable. The locking claw 69 is urged in the rotational direction approaching the stopper 67 by an urging means such as a spring (not shown). As a result, when the arm portion 15 is placed on the field edge receiver 23, the locking claw 69 is locked to the field edge receiver 23 as shown in the figure to prevent the drop off. The engagement / disengagement mechanism 63 is provided on the arm portion 15 on at least one end side in the longitudinal direction of the ceiling work floor plate 11. The reason for the one end side is that the distance between the field receivers 23 may be different, and those at both ends may not be used at the same time. The engaging / disengaging mechanism 63 is fixedly arranged on one end side of the arm portion 15 and the engaging / disengaging mechanism that can slide along the arm portion 15 is provided on the other end side. It is possible to cope with cases where the

天井内作業用床板１１は、滑り止めシート１７によって野縁受け２３に対する腕部１５の滑りは抑制されるが、床部１３で移動する作業者によって大きな慣性が天井内作業用床板１１に作用した場合であっても、腕部１５に設けられた係脱機構６３が野縁受け２３に係止されることで、腕部１５が野縁受け２３に対して移動しなくなる。これにより、腕部１５を野縁受け２３に固定でき、野縁受け２３上での腕部１５の移動をより確実に防止し、安全性を高めることができる。 In the ceiling work floor plate 11, the slip of the arm portion 15 with respect to the field receiver 23 is suppressed by the anti-slip sheet 17, but a large inertia is applied to the ceiling work floor plate 11 by the worker moving on the floor portion 13. Even in this case, the engagement / disengagement mechanism 63 provided in the arm portion 15 is locked to the field edge receiver 23, so that the arm section 15 does not move relative to the field edge receiver 23. Thereby, the arm part 15 can be fixed to the field edge receiver 23, the movement of the arm part 15 on the field edge receiver 23 can be prevented more reliably, and safety can be improved.

図８は運搬用固定具７３によって重ねられた二枚の天井内作業用床板１１の斜視図である。
天井内作業用床板１１は、二枚の天井内作業用床板１１を平行に重ねて相互に固定する運搬用固定具７３が腕部１５に設けられていることが好ましい。二枚の天井内作業用床板１１を重ねて１つにまとめ、地上での搬送（運搬）を容易にする。運搬用固定具７３としては、例えばパッチン錠７５を設けて互いを連結する。或いは結束帯、例えば面ファスナー帯等を用いて、例えば腕部１５同士を縛り、１つにしてもよい。なお、把手５１は、二枚の天井内作業用床板１１に設けたそれぞれのものが近接して同時に掴みやすくなるように、主角パイプ３９の高さ方向の片側に寄せて配置されることが好ましい。 FIG. 8 is a perspective view of the two floor boards 11 for work in the ceiling that are overlapped by the transport fixture 73.
In the ceiling work floor plate 11, it is preferable that a transport fixture 73 for fixing the two ceiling work floor plates 11 in parallel is fixed to each other on the arm portion 15. The two ceiling work floor plates 11 are stacked and integrated into one to facilitate transportation (transport) on the ground. As the transport fixture 73, for example, a patch lock 75 is provided to connect each other. Alternatively, for example, the arm portions 15 may be tied together by using a binding band, for example, a hook-and-loop band, or the like. The handle 51 is preferably arranged close to one side in the height direction of the main angle pipe 39 so that the respective ones provided on the two work floor plates 11 in the ceiling are close to each other and can be easily grasped at the same time. .

運搬用固定具７３を備える天井内作業用床板１１によれば、二枚の天井内作業用床板１１が、寸法の小さい厚み方向で運搬用固定具７３によって一つに重ねてまとめられ、厚み方向での外形寸法が僅かに増えるのみで、運搬効率が二倍となる。これにより、片手で二枚の天井内作業用床板１１、両手で四枚の天井内作業用床板１１を同時に運搬することができる。また、収納時にまとめられ、管理もしやすくなる。 According to the in-ceiling work floor plate 11 provided with the transport fixture 73, the two in-ceiling work floor plates 11 are put together by the transport fixer 73 in the thickness direction having a small dimension, and the thickness direction With only a slight increase in the external dimensions, the transport efficiency is doubled. Thereby, the two work floor boards 11 in a ceiling can be carried simultaneously with one hand, and the four work floor boards 11 in a ceiling can be carried simultaneously with both hands. Moreover, it is collected at the time of storage and becomes easy to manage.

従って、本実施形態に係る天井内作業用床板１１によれば、吊りボルト２５や障害物がある天井内で、軽メンテナンスを行う際、容易に取り回しができ、作業者が安全に移動し、安全に作業を行うことができる。 Therefore, according to the floor board 11 for work in a ceiling which concerns on this embodiment, when performing a light maintenance in the ceiling with the suspension bolt 25 and an obstruction, it can be easily managed and a worker moves safely and is safe. Can work on.

また、本実施形態に係る天井内の移動方法によれば、作業ポイントまでは直線状に天井内作業用床板１１を連結した天井内仮設足場５７によって安全に、かつ、迅速に移動できる。作業ポイントにおいては、例えば並列に天井内作業用床板１１を連結した天井内仮設足場５７によって、所望の作業位置へ移動でき、無理のない姿勢での作業が可能となり、作業性を向上させることができる。 Moreover, according to the moving method in the ceiling which concerns on this embodiment, it can move to a work point safely and rapidly by the temporary scaffold 57 in a ceiling which connected the floor board 11 for work in a ceiling linearly. At the work point, for example, the temporary scaffold 57 in the ceiling in which the ceiling work floor plates 11 are connected in parallel can be moved to a desired work position, work in an unreasonable posture is possible, and workability can be improved. it can.

次に、上記実施形態と同様に構成した天井内作業用床板を用いた実施例を説明する。
この実施例では、天井内で作業者が安全に移動でき、作業を行えるかのフィールド試験を実施し、課題が解決されたか、想定どおり運用できるか、検証を行った。
天井内作業用床板の仕様は下記の通りとした。
・幅：３６０ｍｍ（把手を除く）
・全長：１１００ｍｍ
・腕部の長さ：２００ｍｍ
・厚さ：５０ｍｍ（連結部、係脱機構、運搬用固定具を除く）
・重さ：３．６８ｋｇ
・材質：アルミニウム
・想定耐荷重：１５０ｋｇ Next, the Example using the floor board for work in a ceiling comprised similarly to the said embodiment is described.
In this example, a field test was performed to determine whether the worker could move safely and work on the ceiling, and verified whether the problem was solved or whether it could be operated as expected.
The specifications of the ceiling work floor are as follows.
・ Width: 360mm (excluding handle)
・ Total length: 1100mm
・ Length of arm: 200mm
・ Thickness: 50mm (excluding connecting part, engagement / disengagement mechanism, transport fixture)
・ Weight: 3.68kg
・ Material: Aluminum ・ Assumed load capacity: 150 kg

［現場への搬入］
従来の足場板と比べコンパクトなので狭い室内でも壁などにぶつける心配がなく、車での携帯にも邪魔にならなかった。
［天井内へのエントリー］
従来の足場板は長いので天井内に入れ難かったが、天井内作業用床板は軽くコンパクトなので楽に天井点検口から入れることができた。天井内作業用床板が天井内に上がる際の足場を直ちに構成できることとなり、天井点検口から安全に天井内に上がることが出来た。従来の足場板は２〜４ｍと長く、天井内での取り回しが悪かったが、天井内作業用床板はコンパクトなので、天井内での取り回しが楽になった。従来の足場板は天井内の構造などの条件によって配置できない場合があったが、天井内作業用床板は作業ポイントまで確実に配置でき、動線が容易に確保できた。 [Transport to site]
Since it is compact compared to the conventional scaffolding board, there is no worry of hitting the walls even in a small room, and it did not get in the way when carried in a car.
[Entry into the ceiling]
The conventional scaffolding board was long and difficult to put in the ceiling, but the floorboard for work in the ceiling was light and compact, so it could be easily inserted from the ceiling inspection port. The scaffolding for the work floor in the ceiling to go up into the ceiling could be constructed immediately, and it was possible to safely go up into the ceiling from the ceiling inspection port. The conventional scaffolding board was 2 to 4 meters long and was difficult to handle in the ceiling, but the floorboard for work in the ceiling was compact, making it easier to handle in the ceiling. Although the conventional scaffolding board could not be arranged depending on conditions such as the structure in the ceiling, the floorboard for work in the ceiling could be reliably arranged up to the work point, and the flow line could be easily secured.

天井内作業用床板を二枚使い、進行に沿って移し替えながらの移動、すなわち盛り替えながら移動すれば、少ない枚数でも作業ポイントまで到達することができた。また、二枚の天井内作業用床板を使い、盛り替えながら移動することを想定しているが、作業内容によっては作業ポイントまで本発明の天井内作業用床板を敷き詰めることで、資材の搬入や作業者の行き来が楽にできることが知見できた。天井内作業用床板は、床部の上に人が載ってもバタついたり、ずれたりすることなく安定していた。また、たわみもなく、安心感があった。さらに、作業ポイントにおいては、天井内作業用床板を複数枚並べることで、作業スペースを広く確保することができた。 By using two floor boards for work in the ceiling and moving while moving, that is, moving while rearranging, it was possible to reach the work point even with a small number of sheets. In addition, it is assumed that two floors for work in the ceiling are used and moved while being reordered, but depending on the work contents, the work floor in the ceiling of the present invention is laid down to the work point, so that materials can be carried in and It was found that workers could easily go back and forth. The work floor in the ceiling was stable without fluttering or shifting even when a person placed on the floor. Also, there was no deflection and a sense of security. Furthermore, at the work point, a large work space could be secured by arranging a plurality of ceiling work floors.

このことから、作業者は足元を気にすることなく、無理のない姿勢で作業することができるようになった。運用方法については、ほぼ想定どおりの使い方ができた。本発明においては、天井内作業用床板をＨ形状にすることで、天井内という狭い空間での取り回しが非常によく、吊りボルトや各種配管，配線などの障害物を避け、作業ポイントまでの最適な動線が確保することができた。 As a result, workers can work in a comfortable posture without worrying about their feet. About the operation method, I was able to use it almost as expected. In the present invention, the floor plate for work in the ceiling is H-shaped, so it is very easy to handle in a narrow space inside the ceiling, avoiding obstacles such as suspension bolts, various pipes, wiring, etc. A good flow line could be secured.

１１…天井内作業用床板
１３…床部
１５…腕部
１９…脱落規制凸部
２３…野縁受け
３７…長辺部
３９…柱状部材（主角パイプ）
４５…腕部下面
４７…突出先端
４９…突出基端
５７…天井内仮設足場
５９…連結部
６３…係脱機構
７３…運搬用固定具 DESCRIPTION OF SYMBOLS 11 ... Floor board for work in ceiling 13 ... Floor part 15 ... Arm part 19 ... Drop-off control convex part 23 ... Field edge receiver 37 ... Long side part 39 ... Columnar member (main angle pipe)
45 ... Lower arm portion 47 ... Protruding tip 49 ... Protruding proximal end 57 ... Temporary scaffolding in ceiling 59 ... Connecting portion 63 ... Engaging / disengaging mechanism 73 ... Transport fixture

Claims

A rectangular plate floor;
Two pairs of arms that extend from both longitudinal ends of each of the pair of parallel long sides of the floor and project in parallel with each other at one longitudinal end and the other longitudinal end;
A drop-out restricting convex portion that protrudes downward and is fixed to the lower surface of the arm portion at the protruding tip of each of the arm portions,
A floor board for work in a ceiling characterized by comprising.

A floorboard for work in a ceiling according to claim 1,
The two pairs of arms are configured as a pair of one columnar member continuously along the long side portion, and both end portions of these columnar members are configured as the arms. Working floor board.

A floor board for work in a ceiling according to claim 1 or 2,
The arm part is provided with a connecting part for connecting a plurality of floor boards for work in the ceiling on the same plane in a projecting direction of the arm part or a direction orthogonal to the projecting direction of the arm part. A floorboard for work in the ceiling.

It is a floor board for work in a ceiling according to claim 1, 2 or 3,
Any one of the arm portions is provided with an engagement / disengagement mechanism that is engaged with a field receiver.

It is a floor board for work in a ceiling given in any 1 paragraph of Claims 1, 2, 3, and 4,
An in-ceiling work floor plate, wherein the arm portion is provided with a transport fixture for fixing the two work floor plates in the ceiling in parallel to each other.

A method of moving in a ceiling using the floorboard for work in a ceiling according to any one of claims 1, 2, 3, 4, and 5,
Bring a plurality of floor boards for work in the ceiling into the ceiling,
The arm portions at both ends in the longitudinal direction are bridged across each of the parallel field receivers in a direction intersecting the field receiver, and a plurality of ceiling work floors are arranged close to each other in the longitudinal direction or the direction perpendicular to the longitudinal direction. Forming a temporary scaffold in the ceiling, and moving on the temporary scaffold in the ceiling.

A method of moving in a ceiling using the floorboard for work in a ceiling according to any one of claims 1, 2, 3, 4, and 5,
Bring at least two work floors in the ceiling into the ceiling,
The arm portions at both ends in the longitudinal direction are spanned across each of the parallel field receivers in a direction intersecting the field receiver, and the respective work floors in the ceiling are arranged close to each other in the longitudinal direction or the direction perpendicular to the longitudinal direction. A method of moving within the ceiling, wherein the method further comprises: forming a temporary scaffold in the ceiling and moving on the temporary scaffold in the ceiling while changing the floor plate for work in the ceiling in a moving direction in the ceiling.

A method of moving in a ceiling using the floorboard for work in a ceiling according to any one of claims 1, 2, 3, 4, and 5,
Two or more floor boards for work in the ceiling are sequentially brought into the ceiling,
The arm portions at both ends in the longitudinal direction are bridged across each of the parallel field receivers in a direction intersecting the field receiver, and a plurality of ceiling work floors are arranged close to each other in the longitudinal direction or the direction perpendicular to the longitudinal direction. A method of moving within the ceiling, wherein a temporary scaffold in the ceiling is formed by connecting a passage from the ceiling inspection port to the work point in the ceiling, and moving on the temporary scaffold in the ceiling.