JP3671061B2 - Suspension staircase and its temporary method - Google Patents

Suspension staircase and its temporary method Download PDF

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JP3671061B2
JP3671061B2 JP00841594A JP841594A JP3671061B2 JP 3671061 B2 JP3671061 B2 JP 3671061B2 JP 00841594 A JP00841594 A JP 00841594A JP 841594 A JP841594 A JP 841594A JP 3671061 B2 JP3671061 B2 JP 3671061B2
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stair
staircase
unit
suspension
stair unit
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JPH07217230A (en
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進 三田
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日工株式会社
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G27/00—Temporary arrangements for giving access from one level to another for men or vehicles, e.g. steps, ramps

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Movable Scaffolding (AREA)
  • Steps, Ramps, And Handrails (AREA)

Description

【０００１】
【産業上の利用分野】
本発明は、建築現場の構築体に沿って上部から吊り下げるようにして仮設する吊り階段及びその仮設方法に関する。
【０００２】
【従来の技術】
従来、建築現場で使用される吊り階段として、例えば特開昭５７−１１６８７０号公報に開示されているように、踊り場に一層分の階段を備えた階段ユニットを複数基チェーンにより一定の間隔を開けて連結して所定の長さの吊り階段とし、構築物に沿わせて吊り下げるようにしたものがある。
【０００３】
【発明が解決しようとする課題】
しかしながら、上記従来の吊り階段のようにチェーンにより吊り下げるようにしたものでは、吊り階段全体の剛性が乏しく左右上下に揺れ易く、構築物に沿って多数の揺れ止めを施す必要がある。
【０００４】
また、港湾の埋め立て工事等では海水を抜き取るにしたがって順次下方に足場を構築していくような工事があり、ここでは階段を下方に向けて簡単に継ぎ足すことのできる吊り階段が望まれている。
【０００５】
本発明は上記の点に鑑み、適度な剛性を有し、組み立て及び階段の継ぎ足しが容易にできるようにした吊り階段及びその仮設方法を提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明は上記の目的を達成するために、請求項１記載の吊り階段は、建築現場などの構築体に沿って上部から吊り下げるようにして仮設する吊り階段において、門型をした一対の階段枠を所定間隔を設けて対向させ、対向する階段枠の間に補強材を配設して階段枠を自立させると共に、対向する階段枠の間に階段を掛け渡してクレーンにて吊り下げ可能なように一体化して階段ユニットを形成し、複数の前記階段ユニットをクレーンにてユニット単位で積み重ねて管体連結具により上下に連結し、連結した階段ユニットを階段ユニット取付け手段によって階段吊下げ用受梁に取り付けて吊り下げる一方、吊り下げた階段ユニットに新たに階段ユニットを継ぎ足す時には、地上にて別途組み立てた階段ユニットを階段吊下げ用受梁に取り付けた階段ユニットの上位に積み重ねて管体連結具により連結し、連結して一体となった階段ユニットをクレーンにより吊り上げて支持しながら階段吊下げ用受梁に階段ユニットを固定している階段ユニット取付け手段を解除し、一体となった階段ユニットを積み重ねた分だけ降下させた後、再び階段ユニット取付け手段によって階段ユニットを階段吊下げ用受梁に固定するように構成したことを特徴としている。
【０００７】
また、請求項２記載の吊り階段の仮設方法は、内部に階段を内装した階段ユニットを上下に連結して階段吊下げ用受梁より吊り下げた吊り階段において、
吊り下げた階段ユニットに新たに階段ユニットを継ぎ足す時に、地上にて別途組み立てた階段ユニットを階段吊下げ用受梁に取り付けた階段ユニットの上位に積み重ねて連結し、連結して一体となった階段ユニットをクレーンにより吊り上げて支持しながら階段吊下げ用受梁に階段ユニットを固定している階段ユニット取付け手段を解除し、一体となった階段ユニットを積み重ねた分だけ降下させた後、再び階段ユニット取付け手段によって階段ユニットを階段吊下げ用受梁に固定するようにしたことを特徴としている。
【０００８】
【作用】
本発明の請求項１記載の吊り階段によれば、対向させた一対の門型の階段枠を自立するように補強材により補強し、この階段枠の間に階段を掛け渡してクレーンにて吊り下げ可能なように一体化して階段ユニットを形成し、複数の前記階段ユニットをクレーンにてユニット単位で積み重ねて管体連結具により上下に連結し、更に連結した階段ユニットを階段吊下げ用受梁に階段ユニット取付け手段により固定して吊り下げる一方、階段ユニットを継ぎ足す時には、別途組み立てた階段ユニットを階段吊下げ用受梁に取り付けた階段ユニットの上位に積み重ねて管体連結具により連結し、一体となった階段ユニットをクレーンにより吊り上げて支持しながら階段吊下げ用受梁に階段ユニットを固定している階段ユニット取付け手段を解除し、一体となった階段ユニットを積み重ねた分だけ降下させた後、再び階段ユニット取付け手段によって階段ユニットを階段吊下げ用受梁に固定するように構成したので、吊り階段に剛性を持たせることができ、左右及び上下の揺れを少なくすることができ、しかも組み立て式のユニットをクレーンにてユニット単位で積み重ねて連結するだけで吊り階段を形成することができるので吊り階段を迅速に構築することができ、また上記一連の操作によって容易に階段ユニットを継ぎ足すことができて工事の進行に迅速に対応することができる。
【０００９】
また、請求項２記載の吊り階段の仮設方法によれば、工事の進行に伴う構築物の高さや深さの変化に応じて階段ユニットを継ぎ足す時には、別途組み立てた階段ユニットを吊り上げて階段吊下げ用受梁に吊り下げた階段ユニットの上位に移送する。そして、管体連結具によって階段吊下げ用受梁側の階段ユニット上部とその上位に移送した階段ユニット下部とを連結し、移送した別の階段ユニットを吊り上げたままで階段吊下げ用受梁に固定している階段ユニット取付け手段を解除する。そして吊り上げている階段ユニットを連結した階段ユニット分だけ降下させ、再び階段吊下げ用受梁に階段ユニットを階段ユニット取付け手段により固定する。こうした一連の操作によって容易に階段ユニットを継ぎ足すことができて工事の進行に迅速に対応することができる。
【００１０】
【実施例】
以下本発明の実施例を図面に基づいて説明する。
【００１１】
図１は本発明吊り階段の一実施例を示す斜視図であって、組み立て式の階段ユニット１を上下に複数基連結して所定高さの階段を形成する一方、構築物（図示せず）に階段吊下げ用受梁２を配設し、該階段吊下げ用受梁２に階段ユニット取付け手段である階段ユニット固定金具３によって前記階段を取り付けて吊り下げたものである。
【００１２】
この吊り階段を形成する階段ユニット１について図２〜図４に基づいて詳しく説明すると、４は階段ユニット１の基礎枠であって、該基礎枠４は横桟５を一対平行に並べると共に、それぞれの横桟５の両端側面部に所定長さの短管からなる連結管６を上下両端部を開放状態として立設し、更に対向する連結管６同士を水平管７により連結し、四隅に連結管６を有した枠体に構成している。
【００１３】
そして前記基礎枠４を２個を所定の間隔を設けて並置し、この対向する基礎枠４の内側に面する連結管６には門型の階段枠８の建地８ａを、また外側に位置する連結管６には逆門型の手摺枠９の建地９ａを、管体連結具１０により連結して図４に示すようにボルト・ナット等の締結具１１により締結する。このとき管体連結具１０は連結管６に対して着脱可能としたものでも良いし、また予め連結管６に固着して連結管６と一体としたものでも良い。
【００１４】
次に、上部水平材１２と下部水平材１３との間に二本の斜材１４を固着した筋交１５を形成し、図４に示すように、筋交１５の下部水平材１３の両端部を対向するそれぞれの基礎枠４の内側に位置する横桟５の端部に重ね、下部水平材１３の端部と横桟５端部に穿設した透孔に挿通状にボルト１６を挿入し、ナット１７により締結する。
【００１５】
前記上部水平材１２には階段枠８及び手摺枠９のそれぞれの建地８ａ、９ａとの交叉部分にクランプ１８が固着してあり、該クランプ１８によってそれぞれの建地８ａ、９ａを掴むようにして階段枠８及び手摺枠９と筋交１５とを固着し、対向する両基礎枠４及び各基礎枠４に立設した階段枠８及び手摺枠９とを一体としている。
【００１６】
このように基礎枠４と階段枠８及び手摺枠９を筋交１５により一体化することによりこれらの組み合わせに適度な剛性を与えている。
【００１７】
そして一体化された階段枠８及び手摺枠９の内、対向する階段枠８の間には階段１９を掛け渡し、また基礎枠４の内、階段１９の下位部分に臨む基礎枠４には足場板２０を敷設して踊り場を形成して一層分の階段ユニット１を形成する。
【００１８】
この階段ユニット１を図５に示すように上下に配置すると、上位に位置する階段ユニット１の基礎枠４に配設した連結管６下端部と、下位に位置する階段ユニット１の階段枠８及び手摺枠９のそれぞれの建地８ａ、９ａ上端部とが対向するようになり、この連結管６と建地８ａ、９ａとを管体連結具１０によって連結することによって上下の階段ユニット１が一体化される。そして複数基の階段ユニット１を順次連結していけば所定高さの吊り階段を仮設することができるのである。
【００１９】
ここでも上下に配置した階段ユニット１同士を管体連結具１０により連結することで複数の階段ユニット１により構築される吊り階段の剛性を確保するようにしている。
【００２０】
次に、本発明の吊り階段を構築物に沿って吊り下げる手順を図６〜図１０に基づいて説明する。
【００２１】
先ず、図６に示すように吊り階段を設置しようとする構築物の上部付近に吊り階段を吊り下げる階段吊下げ用受梁２を二本配設する。
【００２２】
そして吊り階段の設置場所付近の地上にて工事現場に搬入した吊り階段の各部材を組み合わせて階段ユニット１を組み立てる。その手順は、図２〜図４に基づいて前述した通りである。
【００２３】
この階段ユニット１の筋交１５の上部水平材１２に階段ユニット固定金具３を取付け、クレーンにより吊り上げて階段を吊設する位置に配設した二本の受梁２の上位に移送し、階段ユニット１を二本の受梁２の間に挿入するようにして吊り降ろす。そして図７に示すように、階段ユニット１の上部水平材１２に取付けた階段ユニット固定金具３を受梁２上に載置してボルト・ナット等の締結具で固定する。
【００２４】
この時、予め地上にて階段ユニット１を何段にも連結しておき、その最上部の上部水平材１２に階段ユニット固定金具３を取付け、この階段ユニットを一度に受梁２に吊り下げるようにしても良い。
【００２５】
次に、受梁２に吊り下げている階段ユニット１に別の階段ユニット１´を追加して階段の段数を増やす場合について説明する。
【００２６】
先ず、地上にて別の階段ユニット１´を組み立て、それを図８に示すように、クレーンにて吊り上げて受梁２に吊り下げた階段ユニット１の上位に移送する。
【００２７】
この時、階段の方向が互いに同方向とならないように上位の階段ユニット１´を下位の階段ユニット１に対して１８０度回転させる。そして下位の階段ユニット１の階段枠８及び手摺枠９の建地８ａ、９ａと上位の階段ユニット１´の連結管６とを管体連結具１０によって連結する。
【００２８】
そして上下の階段ユニット１´、１の連結が完了すると、図９に示すように、上位の階段ユニット１´をクレーンによって吊り上げた状態で受梁２に固定した階段ユニット固定金具３を取り外して上位の階段ユニット１´の上部水平材１２に先程取り外した階段ユニット固定金具３を取り付ける。
【００２９】
そして図１０に示すように階段ユニット１´、１を降下させて上位の階段ユニット１´に取り付けた階段ユニット固定金具３を受梁２の上に載置して受梁２に固定する。
【００３０】
このようにして、階段吊下げ用受梁２に吊り下げている吊り階段に別の階段ユニットを順次継ぎ足して吊り階段の段数を増加していくのである。なお、追加する別の階段ユニットを一段として説明したが、追加する別の階段ユニットを予め何段にも連結しておいても良い。
【００３１】
【発明の効果】
以上のように本発明の請求項１記載の吊り階段にあっては、対向させた一対の門型の階段枠８を筋交１５等によって自立させて階段１９を掛け渡してクレーンにて吊り下げ可能なように一体化して階段ユニット１を形成し、この階段ユニット１をクレーンにてユニット単位で積み重ねて管体連結具１０によって上下に連結し、これを階段吊り下げ用受梁２に階段ユニット固定金具３を介して吊り下げて固定する一方、階段ユニットを継ぎ足す時には、別途組み立てた階段ユニット１´を階段吊下げ用受梁２に取り付けた階段ユニット１の上位に積み重ねて管体連結具１０により連結し、一体となった階段ユニットをクレーンにより吊り上げて支持しながら階段吊下げ用受梁２に階段ユニットを固定している階段ユニット固定金具３を解除し、一体となった階段ユニットを積み重ねた分だけ降下させた後、再び階段ユニット固定金具３によって階段ユニットを階段吊下げ用受梁２に固定するように構成したので、階段ユニット１はもとより、これを連結した吊り階段も簡単に組み立てることができ、手間のかからない迅速な仮設、及び階段の継ぎ足しを容易に行なうことができる。また、それらに適度な剛性を持たせることができ、仮設時の左右上下の揺れが少なくなり、更には、ばらばらに解体できて輸送、保管にも便利である。
【００３２】
また、請求項２記載の吊り階段の仮設方法にあっては、吊り下げた階段ユニット１に新たに階段ユニット１´を継ぎ足す時に、別途地上にて階段ユニット１´を組み立て、それを階段吊下げ用受梁２に取り付けた階段ユニット１の上位に積み重ねて連結し、連結して一体となった階段ユニットをクレーンにより吊り上げて階段ユニットを積み重ねた分だけ降下させるようにして下方への階段の継ぎ足しを行うようにしたので、吊り階段における階段の継ぎ足しを容易に、かつ安全に行なうことができる。
【図面の簡単な説明】
【図１】本発明に係る吊り階段の一実施例を示す斜視図である。
【図２】図１の階段ユニット部分の斜視図である。
【図３】図２の一部省略した分解図である。
【図４】図２の要部拡大図である。
【図５】階段ユニットの連結の様子を示す説明図である。
【図６】本発明に係る吊り階段の仮設手順を示す説明図である。
【図７】本発明に係る吊り階段の仮設手順を示す説明図である。
【図８】本発明に係る吊り階段の仮設手順を示す説明図である。
【図９】本発明に係る吊り階段の仮設手順を示す説明図である。
【図１０】本発明に係る吊り階段の仮設手順を示す説明図である。
【符号の説明】
１、１´…階段ユニット ２…階段吊下げ用受梁
３…階段ユニット固定金具（階段ユニット取付け手段）
４…基礎枠 ８…階段枠
１０…管体連結具 １５…筋交
１９…階段[0001]
[Industrial application fields]
The present invention relates to a suspension staircase that is temporarily installed so as to be suspended from an upper part along a construction body at a construction site, and a temporary method thereof.
[0002]
[Prior art]
Conventionally, as a suspension staircase used at a construction site, for example, as disclosed in Japanese Patent Application Laid-Open No. 57-116870, a stair unit having a stair for one layer at a landing is opened at a certain interval by a plurality of chains. Are connected to form a suspension staircase of a predetermined length and suspended along the structure.
[0003]
[Problems to be solved by the invention]
However, in the case of being suspended by a chain as in the conventional suspension staircase, the entire suspension staircase has poor rigidity and easily swings from side to side and up and down, and it is necessary to provide a large number of vibration stoppers along the structure.
[0004]
In addition, there is a construction in which a scaffold is constructed in the downward direction as seawater is extracted in port reclamation work, etc. Here, a suspended staircase that can be easily added with the stairs downward is desired. .
[0005]
The present invention has been made in view of the above points, and an object thereof is to provide a suspended staircase having a suitable rigidity and capable of easily assembling and adding a staircase and a temporary method thereof.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, the suspension staircase according to claim 1 is a pair of staircases having a gate shape in a suspension staircase that is temporarily suspended from a top along a construction body such as a construction site. The frames are opposed to each other with a predetermined interval, and a stiffening frame is provided between the opposed staircase frames so that the staircase frames can stand on their own. In this way, a stair unit is formed, and a plurality of the stair units are stacked on a unit basis by a crane and are connected up and down by a pipe connector, and the connected stair units are received by the stair unit attachment means for stair suspension. while hanging attached to the beam, to when annex the newly stairs unit on the stairs unit suspended, was fitted with a separately assembled stairs unit on the ground to the stairs hanging for receiving beam Stair unit mounting means that is stacked on the upper part of the step unit and connected by a tube connector, and the stair unit is fixed to the beam for hanging the stair while supporting the united stair unit by lifting it with a crane. Is released, the integrated stair unit is lowered by the stacked amount, and then the stair unit is fixed to the stair suspension receiving beam again by the stair unit mounting means .
[0007]
Moreover, the temporary construction method of the suspension staircase according to claim 2 is a suspension staircase in which a staircase unit having a staircase inside is connected vertically and suspended from a stairway suspension beam.
When a new stair unit is added to the suspended stair unit, the stair unit separately assembled on the ground is stacked and connected to the upper part of the stair unit attached to the receiving beam for stair suspension, and they are joined together. Release the stair unit mounting means that fixes the stair unit to the beam for hanging the stair while supporting the stair unit by lifting it with a crane. It is characterized in that the stair unit is fixed to the stair suspension receiving beam by the unit mounting means.
[0008]
[Action]
According to the suspension staircase of the first aspect of the present invention, the pair of opposed gate-type staircase frames are reinforced by the reinforcing material so as to be self-supporting, and the stairs are suspended between the staircase frames and suspended by the crane. It is integrated so that it can be lowered to form a stair unit, and a plurality of the stair units are stacked in units by a crane and are connected up and down with a pipe connector. When the stairs unit is added and suspended, the separately assembled stairs unit is stacked on the upper part of the stairs unit attached to the stairs suspension beam, and connected by the pipe connector. While lifting and supporting the integrated stair unit with a crane, release the stair unit mounting means that secures the stair unit to the receiving beam for hanging the stair. After dropping only amount to stacking the stairs units became, and then, is fixed to the receiving beam for suspended stairs stairs unit again by a staircase unit mounting means can have a stiffness in the hanging stairs, Left and right and up and down swings can be reduced, and a suspension staircase can be formed quickly by simply assembling unit units by stacking and connecting units in a crane unit . In addition, the stair unit can be easily added by the series of operations described above, and the progress of the construction can be quickly handled.
[0009]
Moreover, according to the temporary construction method of the suspended staircase according to claim 2, when the stair unit is added according to the change in the height or depth of the structure as the construction progresses, the separately assembled stair unit is lifted to suspend the staircase. Transfer to the upper part of the stair unit hung on the receiving beam. Then, the upper part of the stair unit on the stair suspension receiving beam side and the lower part of the stair unit transferred to the upper part are connected by the pipe connector, and the other stair unit transferred is fixed to the stair suspension receiver while being lifted. Release the stairs unit mounting means. Then, the suspended stair unit is lowered by the amount of the connected stair unit, and the stair unit is fixed to the stair suspension receiving beam again by the stair unit mounting means. By such a series of operations, the stair unit can be easily added, and the progress of the construction can be quickly handled.
[0010]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0011]
FIG. 1 is a perspective view showing an embodiment of the suspension staircase of the present invention. A plurality of assembly-type staircase units 1 are connected in the vertical direction to form a staircase having a predetermined height, while a structure (not shown) is used. A stair suspension receiving beam 2 is provided, and the staircase is attached to the stair suspension suspension beam 2 by a stair unit fixing bracket 3 which is a stair unit attachment means.
[0012]
The stair unit 1 that forms the suspension staircase will be described in detail with reference to FIGS. 2 to 4. Reference numeral 4 denotes a base frame of the stair unit 1, and the base frame 4 has a pair of horizontal rails 5 arranged in parallel, A connecting pipe 6 consisting of a short pipe of a predetermined length is erected on both side surfaces of the horizontal rail 5 with the upper and lower ends open, and the opposing connecting pipes 6 are connected by horizontal pipes 7 and connected to the four corners. A frame having a tube 6 is formed.
[0013]
The two base frames 4 are juxtaposed at a predetermined interval, and the building pipe 8 facing the inner side of the opposing base frame 4 is located on the building 8a of the gate-shaped step frame 8 and on the outer side. The building 9a of the reverse-gate-type handrail frame 9 is connected to the connecting pipe 6 by a pipe connector 10 and fastened by a fastener 11 such as a bolt and a nut as shown in FIG. At this time, the tube connector 10 may be detachable from the connecting tube 6, or may be fixed to the connecting tube 6 in advance and integrated with the connecting tube 6.
[0014]
Next, a bracing 15 in which two diagonal members 14 are fixed is formed between the upper horizontal member 12 and the lower horizontal member 13, and both ends of the lower horizontal member 13 of the bracing 15 are formed as shown in FIG. Are bolted to the end of the horizontal beam 5 located inside each of the foundation frames 4 facing each other, and the bolt 16 is inserted in a through hole formed in the end of the lower horizontal member 13 and the end of the horizontal beam 5. The nut 17 is used for fastening.
[0015]
The upper horizontal member 12 has clamps 18 fixed to the intersections of the staircase frame 8 and the handrail frame 9 with the respective building sites 8a and 9a, and the staircase 18 is held by the clamps 18 so as to hold the respective building sites 8a and 9a. The frame 8 and the handrail frame 9 and the bracing 15 are fixed, and the opposed base frames 4 and the staircase frame 8 and the handrail frame 9 erected on each base frame 4 are integrated.
[0016]
Thus, by combining the base frame 4, the staircase frame 8, and the handrail frame 9 by the bracing 15, an appropriate rigidity is given to these combinations.
[0017]
Of the integrated staircase frame 8 and handrail frame 9, a staircase 19 is spanned between the opposing staircase frames 8, and the base frame 4 facing the lower part of the staircase 19 in the base frame 4 is a scaffold. The board 20 is laid down to form a landing, and the stairs unit 1 for one layer is formed.
[0018]
When the stair unit 1 is arranged up and down as shown in FIG. 5, the lower end of the connecting pipe 6 disposed on the base frame 4 of the upper stair unit 1 and the stair frame 8 of the lower stair unit 1 and The upper and lower stairs units 1 are united by connecting the connecting pipe 6 and the building areas 8a and 9a with the tube connecting tool 10 so that the upper ends of the building areas 8a and 9a of the handrail frame 9 are opposed to each other. It becomes. If a plurality of staircase units 1 are sequentially connected, a suspended staircase having a predetermined height can be temporarily installed.
[0019]
Also here, the stair units 1 arranged up and down are connected to each other by the tube connector 10 to ensure the rigidity of the suspended staircase constructed by the plurality of stair units 1.
[0020]
Next, a procedure for suspending the suspension staircase of the present invention along the structure will be described with reference to FIGS.
[0021]
First, as shown in FIG. 6, two stair suspension receiving beams 2 that suspend the suspension staircase are disposed near the upper portion of the structure on which the suspension staircase is to be installed.
[0022]
Then, the stair unit 1 is assembled by combining the members of the suspended staircase carried into the construction site on the ground near the installation location of the suspended staircase. The procedure is as described above with reference to FIGS.
[0023]
The stair unit fixing bracket 3 is attached to the upper horizontal member 12 of the bracing 15 of the stair unit 1 and is lifted by a crane and transferred to the upper part of the two receiving beams 2 arranged at the position where the stair is hung. 1 is hung so as to be inserted between the two receiving beams 2. Then, as shown in FIG. 7, the stair unit fixing bracket 3 attached to the upper horizontal member 12 of the stair unit 1 is placed on the receiving beam 2 and fixed with fasteners such as bolts and nuts.
[0024]
At this time, the stair unit 1 is connected to the ground in advance in a number of steps, and the stair unit fixing bracket 3 is attached to the upper horizontal member 12 at the top, so that the stair unit is suspended from the receiving beam 2 at a time. Anyway.
[0025]
Next, a case where another stair unit 1 ′ is added to the stair unit 1 suspended from the receiving beam 2 to increase the number of steps of the stair will be described.
[0026]
First, another stair unit 1 'is assembled on the ground, and it is lifted by a crane and transferred to the upper level of the stair unit 1 suspended from the receiving beam 2 as shown in FIG.
[0027]
At this time, the upper stair unit 1 ′ is rotated 180 degrees with respect to the lower stair unit 1 so that the directions of the stairs are not the same. Then, the staircase frame 8 of the lower staircase unit 1 and the building sites 8 a and 9 a of the handrail frame 9 and the connecting pipe 6 of the upper staircase unit 1 ′ are connected by the pipe body connector 10.
[0028]
When the connection of the upper and lower stair units 1 ′ and 1 is completed, as shown in FIG. 9, the upper stair unit 1 ′ is lifted by a crane and the stair unit fixing bracket 3 fixed to the receiving beam 2 is removed and the upper stair unit 1 ′ is removed. The stair unit fixing bracket 3 removed previously is attached to the upper horizontal member 12 of the stair unit 1 '.
[0029]
Then, as shown in FIG. 10, the stair unit 1 ′, 1 is lowered and the stair unit fixing bracket 3 attached to the upper stair unit 1 ′ is placed on the receiving beam 2 and fixed to the receiving beam 2.
[0030]
In this way, the number of steps of the suspended staircase is increased by sequentially adding another staircase unit to the suspended staircase suspended from the staircase-suspending receiving beam 2. Although another step unit to be added has been described as one stage, another step unit to be added may be connected in advance to any number of steps.
[0031]
【The invention's effect】
As described above, in the suspension staircase according to the first aspect of the present invention, the pair of gate-shaped staircase frames 8 facing each other are self-supported by the bracing 15 or the like, and the staircase 19 is stretched and suspended by the crane. The stair unit 1 is formed by integrating as much as possible, and the stair unit 1 is stacked in units by a crane and is connected up and down by a tube connector 10, and this is connected to the receiving beam 2 for hanging the stair unit. While suspending and fixing through the fixing bracket 3, when adding a stair unit, a separately assembled stair unit 1 ′ is stacked on top of the stair unit 1 attached to the stair suspension member 2 to connect the pipe body 10, and the stair unit fixing bracket 3 that fixes the stair unit to the stair suspension suspension beam 2 while lifting and supporting the integrated stair unit by a crane is released. After lowering by the amount of stacking the stairs units became body, and then, is fixed to the lower for receiving beam 2 suspended stairs stairs unit by stairway unit fixing bracket 3 again, stair unit 1 as well, this The coupled suspension stairs can be easily assembled , and quick temporary construction that does not require much time and the addition of stairs can be easily performed . In addition, they can be provided with an appropriate rigidity, so that there is less left-right and up-and-down shaking during temporary installation, and furthermore, they can be disassembled apart and are convenient for transportation and storage.
[0032]
Further, in the temporary construction method for the suspended staircase according to claim 2, when the stair unit 1 'is newly added to the suspended stair unit 1, the stair unit 1' is separately assembled on the ground and the stair unit is suspended. coupled stacked on top of stairs unit 1 attached to the lower for receiving beam 2, linked to the stairs downward so as to lower by the amount of stacking the stairs unit lifted by crane stairs units together Since the extension is performed, it is possible to easily and safely add the stairs in the suspended stairs.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a hanging staircase according to the present invention.
FIG. 2 is a perspective view of the staircase unit portion of FIG.
FIG. 3 is an exploded view of FIG. 2 partially omitted.
4 is an enlarged view of a main part of FIG.
FIG. 5 is an explanatory diagram showing a state of connection of stair units.
FIG. 6 is an explanatory diagram showing a temporary procedure for a suspended staircase according to the present invention.
FIG. 7 is an explanatory diagram showing a temporary procedure for a suspended staircase according to the present invention.
FIG. 8 is an explanatory diagram showing a temporary procedure for a suspended staircase according to the present invention.
FIG. 9 is an explanatory diagram showing a temporary procedure for a suspended staircase according to the present invention.
FIG. 10 is an explanatory diagram showing a temporary procedure for a suspended staircase according to the present invention.
[Explanation of symbols]
1, 1 '... Stair unit 2 ... Stair suspension beam 3 ... Stair unit fixing bracket (Stair unit mounting means)
4 ... Foundation frame 8 ... Stair frame 10 ... Tube connector 15 ... Bracing 19 ... Stair

Claims (2)

建築現場などの構築体に沿って上部から吊り下げるようにして仮設する吊り階段において、門型をした一対の階段枠を所定間隔を設けて対向させ、対向する階段枠の間に補強材を配設して階段枠を自立させると共に、対向する階段枠の間に階段を掛け渡してクレーンにて吊り下げ可能なように一体化して階段ユニットを形成し、複数の前記階段ユニットをクレーンにてユニット単位で積み重ねて管体連結具により上下に連結し、連結した階段ユニットを階段ユニット取付け手段によって階段吊下げ用受梁に取り付けて吊り下げる一方、吊り下げた階段ユニットに新たに階段ユニットを継ぎ足す時には、地上にて別途組み立てた階段ユニットを階段吊下げ用受梁に取り付けた階段ユニットの上位に積み重ねて管体連結具により連結し、連結して一体となった階段ユニットをクレーンにより吊り上げて支持しながら階段吊下げ用受梁に階段ユニットを固定している階段ユニット取付け手段を解除し、一体となった階段ユニットを積み重ねた分だけ降下させた後、再び階段ユニット取付け手段によって階段ユニットを階段吊下げ用受梁に固定するように構成したことを特徴とする吊り階段。In a suspended staircase that is temporarily suspended from the top along a construction body such as a construction site, a pair of gate-shaped staircase frames are opposed to each other with a predetermined interval, and a reinforcing material is disposed between the opposed staircase frames. The staircase frame is set up to be self-supporting, and the staircase is spanned between the opposing staircase frames and integrated so that it can be suspended by a crane to form a staircase unit. They are stacked in units and connected up and down with pipe connectors, and the connected stair units are attached to and suspended from the stair suspension suspension beam by means of stair unit attachment, while a new stair unit is added to the suspended stair unit. At times, stair units assembled separately on the ground are stacked on top of the stair unit attached to the stair suspension support beam, and connected by a pipe connector. The stair unit mounting means for fixing the stair unit to the receiving beam for hanging the staircase was released while supporting the stair unit that became a body by lifting it with a crane, and the integrated stair unit was lowered by the amount stacked. A suspension staircase, wherein the staircase unit is again fixed to the stairway suspension receiving beam by means of the staircase unit attachment means . 内部に階段を内装した階段ユニットを上下に連結して階段吊下げ用受梁より吊り下げた吊り階段において、吊り下げた階段ユニットに新たに階段ユニットを継ぎ足す時に、地上にて別途組み立てた階段ユニットを階段吊下げ用受梁に取り付けた階段ユニットの上位に積み重ねて連結し、連結して一体となった階段ユニットをクレーンにより吊り上げて支持しながら階段吊下げ用受梁に階段ユニットを固定している階段ユニット取付け手段を解除し、一体となった階段ユニットを積み重ねた分だけ降下させた後、再び階段ユニット取付け手段によって階段ユニットを階段吊下げ用受梁に固定するようにしたことを特徴とする吊り階段の仮設方法。  Stairs that are separately assembled on the ground when a new stair unit is added to a suspended stair unit in a suspended staircase that is suspended from a staircase suspension beam by connecting stair units with interior staircases up and down. The unit is stacked and connected to the upper part of the stair unit attached to the stair suspension support beam, and the stair unit is fixed to the stair suspension support beam while supporting the united stair unit by lifting it with a crane. The stair unit mounting means is released, the integrated stair unit is lowered by the amount stacked, and then the stair unit is fixed to the stair suspension suspension beam again by the stair unit mounting means. Temporary method of hanging stairs.
JP00841594A 1994-01-28 1994-01-28 Suspension staircase and its temporary method Expired - Lifetime JP3671061B2 (en)

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Application Number Priority Date Filing Date Title
JP00841594A JP3671061B2 (en) 1994-01-28 1994-01-28 Suspension staircase and its temporary method

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JP3671061B2 true JP3671061B2 (en) 2005-07-13

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Publication number Priority date Publication date Assignee Title
JP2011080276A (en) * 2009-10-08 2011-04-21 Nikko Co Ltd Method of installing suspended staircase
CN103628700A (en) * 2013-11-08 2014-03-12 中天建设集团有限公司 Detachable stairway for construction
CN106869421A (en) * 2017-01-10 2017-06-20 中国建筑第八工程局有限公司 Assembled stairs structure and its installation method
CN114922468B (en) * 2022-05-27 2023-03-24 中国建筑一局(集团)有限公司 Directional movable assembly type packway based on deep foundation pit multi-ring inner support

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