JP2004300688A - Mobile pre-cast floor slab erection machine - Google Patents

Mobile pre-cast floor slab erection machine Download PDF

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Publication number
JP2004300688A
JP2004300688A JP2003092781A JP2003092781A JP2004300688A JP 2004300688 A JP2004300688 A JP 2004300688A JP 2003092781 A JP2003092781 A JP 2003092781A JP 2003092781 A JP2003092781 A JP 2003092781A JP 2004300688 A JP2004300688 A JP 2004300688A
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Japan
Prior art keywords
frame
floor slab
rails
erection machine
suspended
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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JP2003092781A
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Japanese (ja)
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JP3968579B2 (en
Inventor
Masahito Yamaguchi
雅人 山口
Kenji Suzuki
健司 鈴木
Mitsuru Domae
満 堂前
Sadaaki Nakamura
定明 中村
Tomokazu Namegawa
友和 行川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Marine Co Ltd
PC Bridge Co Ltd
Original Assignee
Sanshin Kogyo KK
PC Bridge Co Ltd
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Application filed by Sanshin Kogyo KK, PC Bridge Co Ltd filed Critical Sanshin Kogyo KK
Priority to JP2003092781A priority Critical patent/JP3968579B2/en
Publication of JP2004300688A publication Critical patent/JP2004300688A/en
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Publication of JP3968579B2 publication Critical patent/JP3968579B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile small-sized and light weight pre-cast floor slab erection machine used in changing work of a pre-cast floor slab for the existing bridge and capable of eliminating assembly and disassembly in the case of transportation. <P>SOLUTION: The pre-cast floor slab erection machine comprises a portal type structural body held by four legs, four non-rail traveling devices mounting four legs of the portal type structural body, two rails arranged in the longitudinal direction and fixed to the lower part of a rectangular frame type frame of the upper part of the portal type structural body, a rectangular frame type movable rack respectively suspending long sides on the rails and capable of being moved along the rails, a horizontal beam erected between two long sides of the frame type movable rack and capable of being moved in the longitudinal direction of the frame type movable rack, a suspended device for suspending the floor slab suspended to the horizontal beam and two struts vertically provided to the forward end section in the same directions as two long sides of the frame type movable rack. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】本発明は、既設橋梁のプレキャスト床版の取換工事において使用するプレキャスト床版架設機に関する。
【0002】
【従来の技術】従来橋梁におけるプレキャスト床版の架設は、トラッククレーンやフォークリフト、あるいは門型クレーンやジブクレーンなどといった大型機械を使用して行われてきた。しかし、既設橋梁のプレキャスト床版の取換工事においては、床版上に設置する作業機械の重量が床版の耐荷重力によって制限を受けること、また昼間における橋梁の通行を確保するために昼間は作業を中止して作業機械を撤去するよう求められるケースが増えたことなどから、従来使用されてきた各種作業機械それぞれに次のような難点が目立つようになってきた。
【0003】
▲1▼トラッククレーン
トラッククレーンは自走可能であり、昼間の機材撤去の面では問題はないが、床版を吊り下げたときの総重量が、橋梁架設時に設定された床版の耐荷重力を超えることがあり、また、トラッククレーンの片持ちビームでは床版を吊り下げたときの最小回転半径が大きくなり、トラス橋等路面上に構築物が存在する橋梁など作業スペースの狭い場所ではビームの回転ができず、クレーン車の後方から前方への床版供給が困難となる。
▲2▼フォークリフト
フォークリフトも自走可能であり、昼間の機材撤去の面では問題はないが、吊り装置の改造取付が必要となり、またトラッククレーンに比べて作業半径が小さい。
【0004】
▲3▼ガーダー
ガーダーは設備が大がかりであり、その組立、解体、運送などに費用がかさむ。したがって、現地で組み立て、解体を繰り返すのは経済的に引き合わず、昼間の機材撤去の要求には応じられない。
▲4▼門型クレーン
門型クレーンは、その走行に鋼製の車輪を使用することから専用レールの敷設が必要となるなど設備が大がかりとなり、これを既設床版上に設置する場合は、門型クレーンの重量が床版の耐荷重力を超えないことが必要となる。また、門型クレーンの組立、解体、運送などに経費がかさむため、前記ガーダーと同様、組み立て、解体を繰り返すのは経済的に引き合わず、昼間の機材撤去の要求には応じられない。
▲5▼ジブクレーン
ジブクレーンも、設備が大がかりなため、前記ガーダーや門型クレーンと同様な機械重量の制限や経済上の問題点がある。
【0005】
【発明が解決しようとしている課題】上記従来の技術に鑑み、既設橋梁のプレキャスト床版の取換工事において使用する、小型・軽量で運送時に組立、解体が不要な自走式のプレキャスト床版架設機を提供する。
【0006】
【課題を解決するための手段】本発明者は上記課題を下記の手段により解決した。
(1)4本の脚で保持される門型構造体と、該門型構造体の4本の脚を搭載する4台の(ゴムタイヤ又はクローラ等を有する)無軌条式走行装置と、該門型構造体上部の長方形の枠型フレームの下部にその長手方向に配設・固定された2本のレールと、前記2本のレールにそれぞれの長辺が吊設され、かつ前記レールに沿って移動可能な長方形の枠型移動架と、前記枠型移動架の二つの長辺間に架設され、かつ前記枠型移動架の長手方向に移動可能な横梁と、前記横梁に吊設された床版を吊り下げるための吊り下げ装置と、前記枠型移動架の二つの長辺のそれぞれ同一方向の前方端部に垂設された2本の支柱とで構成されてなることを特徴とする自走式プレキャスト床版架設機。
(2)4本の脚で保持される門型構造体と、該門型構造体の4本の脚を搭載する4台の(ゴムタイヤ又はクローラ等を有する)無軌条式走行装置と、該門型構造体上部の長方形の枠型フレームの下部にその長手方向に配設・固定された2本のレールと、前記2本のレールにそれぞれの長辺が吊設され、かつ前記レールに沿って移動可能な長方形の枠型移動架と、前記枠型移動架の二つの長辺間に架設され、かつ前記枠型移動架の長手方向に移動可能な横梁と、前記横梁に吊設され前記横梁に沿って移動可能な床版を吊り下げるための吊り下げ装置と、前記枠型移動架の二つの長辺のそれぞれ同一方向の前方端部に垂設された2本の支柱とで構成されてなることを特徴とする自走式プレキャスト床版架設機。
【0007】
(3)前記門型構造体が、上部の枠型フレームと4本の逆L字型の脚とからなり、かつ枠型フレームの短辺部がそれぞれ角筒2本を並置した構造をなし、該角筒部に前記逆L字型の脚の水平部を一方は右から、もう一方は左から挿入することによって、左右の脚の間隔を変更可能に構成されてなることを特徴とする前記(1)又は(2)に記載の自走式プレキャスト床版架設機。
(4)前記門型構造体の4本の脚、及び支柱が、伸縮可能な鞘管構造をなし、前記門型構造体の高さを変更可能に構成されてなることを特徴とする前記(1)〜(3)のいずれか1項に記載の自走式プレキャスト床版架設機。
(5)門型構造体の枠型フレーム下部に配設・固定された前記2本のレールにそれぞれの長辺が吊設されかつ前記レールに沿って移動可能な長方形の枠型移動架と、前記枠型移動架の二つの長辺間に架設され、かつ前記枠型移動架の長手方向に移動可能な1本の横梁とで構成された2段式レール移送方式の採用によって、床版を吊り下げて移動させる吊り下げ装置の移動範囲を門型構造体の外部にまで拡大可能としたことを特徴とする前記(1)〜(4)のいずれか1項に記載の自走式プレキャスト床版架設機。
【0008】
(6)前記枠型移動架の二つの長辺のそれぞれ同一方向の端部に垂設された2本の支柱が、床版を吊り下げた吊り下げ装置の門型構造体外部への移送を、安全かつ容易に可能にしたことを特徴とする前記(1)〜(5)のいずれか1項に記載の自走式プレキャスト床版架設機。
(7)プレキャスト床版架設機の吊り下げ装置によって移送された床版を搭載して回転させる回転台車を、前記支柱と門型構造体の前方脚との間に配置してなることを特徴とする前記(1)〜(6)のいずれか1項に記載の自走式プレキャスト床版架設機。
【0009】
【発明の実施の形態】本発明の実施の形態を、実施例の図面によって説明する。
図1は本発明実施例の作業時の斜視図、図2は本発明実施例の構成及び各部材の短縮、収容方向を示す説明図であり、図3は本発明実施例の輸送時の斜視図、図4は発明実施例の2段レール式移送方式の概要説明図、図5〜図7は本発明実施例におけるプレキャスト床版架設機の架設動作の説明図である。
図において1はプレキャスト床版架設機、2は枠型フレーム、3は脚、4は無軌条式走行装置、5は基台、6はレール、6aはレール6の下部フレーム,7は電動スライド式吊設装置、7’、7”はスライド式吊設装置、8は枠型移動架、8aは枠型移動架8の上部フレーム,9は横梁、10はチェーンブロック、11は腕木、12は支柱、13,13’,13’’は床版、14はアウトリガー、15は回転台車である。
【0010】
【実施例】
本発明実施例の自走式プレキャスト床版架設機は、図1及び図2に示すように、門型構造体が上部の長方形の枠型フレーム2と逆L字型の4本の脚3とで構成され、かつ枠型フレームの二つの短辺部が、それぞれ2本の角筒を並置した構造をなし、その2本の角筒にそれぞれ一方には右から、他方には左から逆L字型の脚3の水平部が挿入され、脚3の間隔を拡大・縮小可能としている。そしてこの門型構造体が、左右2組の、前後に2台の無軌条式走行装置4を持つ角柱形の基台5に搭載されて自走可能に構成されている。
また、前記枠型フレーム2の下部にはその長手方向にH型状の2本のレール6が配設・固定され、前記2本のレールに長辺がH型状の2本のレール6からなる長方形の枠型移動架8が電動スライド式吊設装置7を介して前記レールに沿って移動可能に吊設され、前記枠型移動架8の長辺をなす2本のレール6間にはスライド式吊設装置7’を介して横梁9が枠型移動架8の長手方向に移動可能に架設され、さらに前記横梁9に前記横梁に沿って移動可能な吊り下げ装置としてのチェーンブロック10が吊設されている。
また、前記枠型移動架8の二つの長辺のそれぞれ同一方向の前方端部には2本の支柱12が垂設されている。
【0011】
前記門型構造体を構成する4本の逆L字型脚3の垂直部、及び前記支柱12は伸縮可能な鞘型構造をなしており、前記門型構造体の枠型フレーム2の短辺部への脚3の取り付け構造、枠型構造体8、脚3、支柱12それにアウトリガー14を、図2に矢印で示した向きに挿入短縮することにより、図1及び図2に示す作業時の形状を、図3に示す輸送時の形状に変化させ、前記プレキャスト床版架設機を分解することなく輸送できるようにしている。
また、枠型移動架8のレール6への吊設は、図4(a)に示すように、枠型移動架8の中央部付近に固着された2個の電動スライド式吊設装置7を介して行われる。つまり、図4(b)(c)に示したように前記電動スライド吊設装置7はその下部が枠型移動架8の上部フレーム8aに固着されており、前記電動スライド吊設装置7の上部には、前記レール6を挟み、かつ前記レール6の下部フレーム6aの上面に接触しながら回転する車輪Wを軸着している。
前記支柱12は前述のように枠型移動架8の長辺をなす2本のレールの同一方向の前方端部にそれぞれ1本、合計2本垂設されている。したがって、2本の支柱12は枠型移動架の移動に伴って移動する。
【0012】
次に本発明実施例のプレキャスト床版架設機1の床版架設操作を説明する。図3及び図4に示した形状で作業現場に輸送されたプレキャスト床版架設機1は、無軌条式走行装置4によって所定位置まで自走した後、脚3の枠型フレーム2からの引き出しと脚3の伸長、及び支柱12の伸長が行われるとともに、アウトリガー14によって図5(a)に示す形状で床版上に固定される。この際門型構造体の逆L字型脚3の脚部と枠型フレーム間、及び脚3と基台5との間に図示しない補強用筋交いを用いることも好ましい。
【0013】
床版上に固定された前記プレキャスト床版架設機1による床版13の架設作業は、前記床版13の前記プレキャスト床版架設機1への取り込み、つまりチェーンブロック10への床版13の吊り下げ、次いで吊り下げた床版13の回転台車15までの移送・搭載、支柱12の引き上げ、プレキャスト床版架設機1の後退、回転台車15による床版13の90度回転、プレキャスト床版架設機1の前進、支柱12の着地、チェーンブロック10による床版13の吊り上げ、そして所定位置への設置という工程で行われる。
まず、前記床版13を前記プレキャスト床版架設機1への取り込み、つまりチェーンブロック10への床版13の吊り下げは、枠型移動架8の長辺をなす2本のレール間に該レールに沿って移動可能に架設された横梁9を、図5(a)に示す矢印の向きに動かし、前記チェーンブロック10をプレキャスト床版架設機1の中央部に移動して行う。
【0014】
図5(b)に示すようにチェーンブロック10に吊り下げられた床版13の回転台車15への移送・搭載は、前記チェーンブロック10が吊設されている横梁9を、枠型移動架8の長辺をなす2本のレールに沿って矢印の向きに、回転台車15の上まで前進させた後(図6(c)参照)、床版13を下降させることによって行う。
【0015】
次いで床版13の回転を行うが、この際、床版13の長手方向の寸法が支柱12と門型構造体の前方脚部3との間隔より小さい場合には、前記チェーンブロック10の吊り金具のスイベル機構により吊り下げたまま回転できるので、前記回転台車15に搭載して回転する必要はない。しかし、床版13の長手方向の寸法が支柱12と門型構造体の前方脚部3との間隔より大きい場合には、図6(d)に示すように、床版13を前記回転台車に搭載してチェーンブロック10から取り外した後、プレキャスト床版架設機1の支柱12を引き上げるとともに、無軌条式走行装置4を使用して門型構造体を後方に移動させ、床版13の回転に必要なスペースを確保し、その後前記回転台車15により床版13を90度回転させて図7(e)の状態にする。
【0016】
前記床版13の回転を終えると、先に後方に移動させた門型構造体を無軌条式走行装置4を使用して元の位置まで前進させるとともに引き上げていた支柱12を着地させ、その後回転させた床版13を再度チェーンブロックによって吊り上げ、図7(f)に示すように、横梁9を枠型移動架8の長辺をなす2本のレールに沿ってさらに前方に、既設床版が取り外されている位置にまで移動し、その後チェーンブロック10の横梁9に沿っての左右移動により位置の微調整がなされながら下降され、図7(f)で13”と表示した位置に設置される。
なお、図5に13’として示したのは既設の床版であり、床版13”を架設した後は、この上に前記プレキャスト床版架設機を前進させ、次の床版の取り換えを行う。
【0017】
橋梁の床版を取り換える場合、図5(a)に示すように取り換える部分の既設の床版13’は、既に取り外されて空間となっている。したがって、プレキャスト床版架設機1はその手前に設置するしかなく、このような状態で新しい床版13を設置するためには、プレキャスト床版架設機1の前方に床版13を大幅に張り出させて保持する必要がある。しかし、重量のある床版を前方に張り出すとプレキャスト床版架設機1がバランスを損ねる恐れがあり、それを抑止するためにはプレキャスト床版架設機1の重量を大きくするなどの対策が必要となるが、橋梁の床版の耐荷重力を超えて重量を増すことはできず、むしろ輸送の面からも軽量化の要望が強い。
本発明の実施例ではプレキャスト床版架設機1の枠型移動架8の前方端部に垂設された支柱12を、図6(c)等に示すように、取り外された床版の先にある既設の床版13’上、若しくは橋桁上に固定することによってプレキャスト床版架設機1の安定化と軽量化を図っている。
【0018】
【発明の効果】本発明により下記のような効果が発揮できる。
(1)無軌条式走行装置を備えているので、任意の位置に移動、据え付けが可能であり、かつ移動により床版を傷つけることがない。
(2)チェーンブロックが、横梁と枠型移動架との2段の移動機構を介して門型構造体に吊設されているので、チェーンブロックを門型構造体の前方に大きく張り出せることから、門型構造体直下のトラックから直接プレキャスト床版をチェーンブロックに吊り下げ、そのまま門型構造体の前方に移送して前記床版を所定の位置に設置することができる。なお、前記チェーンブロックが門型構造体の前方に張り出すことによってプレキャスト床版架設機がバランスを欠くという恐れは、門型構造体から引き出された枠型移動架とその先端に垂設された支柱とによって抑止されるのですべての操作が安定に行える。
(3)前方に支柱を設けることにより、架設時の装置反力を6箇所に分散できるので、既設床版の耐荷重力を十分クリアできる。
(4)プレキャスト床版架設機が軽量に構成できるので、既設床版上に設置して作業しても既設床版や橋梁に与える影響は少ない。
(5)プレキャスト床版架設機の高さ及び横幅を1台のトラックに積み込める寸法(実施例では高さ2.4m、幅2.22m)にまで縮小できるので、運搬時にも床版架設機を分解する必要がなく、また、運搬にあたって道路交通法に基づく特別な許可を必要としない。
(6)前記(5)に記載したようにプレキャスト床版架設機を分解することなくトラックで現場に運搬でき、かつ、荷台に斜路を付けることにより自走で降ろせるので、プレキャスト床版架設機の運搬にクレーン等の重機を必要とせず、また組立作業も不要なことから、短時間で作業にかかれる。
(7)プレキャスト床版設置時には、橋軸方向、同直角方向への位置の微調整が可能なので、架設が容易になる。
(8)回転台車の併用により幅員8m程度の長尺床版まで架設できる。
(9)運搬費、組立解体費等を含むトータルコストの削減ができる。
(10)作業性がよく、工程の短縮が図れる。
(11)プレキャスト床版架設作業時でも建築限界内に収まる大きさなので、橋梁型式、橋梁規模に左右されることなくすべての橋梁で使用できる。
(12)プレキャスト床版架設機が自走式であることから撤去が容易であり、床版交換工事期間中においても昼間における橋梁の通行を確保したいという要求に容易に応じられる。
【図面の簡単な説明】
【図1】本発明実施例の作業時の斜視図。
【図2】本発明実施例の構成及び各部材の短縮、収容方向を示す説明図。
【図3】本発明実施例の輸送時の斜視図。
【図4】本発明実施例の2段レール式移送方式の概要説明図。
【図5】本発明実施例のプレキャスト床版架設機の架設動作の説明図。
(a)床版架設機の設置、(b)床版の取り込み。
【図6】本発明実施例のプレキャスト床版架設機の架設動作の説明図。
(c)床版の移送、(d)床版の回転台車への搭載と床版架設機の後退。
【図7】本発明実施例のプレキャスト床版架設機の架設動作の説明図。
(e)床版架設機の回転と床版架設機の前進、(f)床版の架設。
【符号の説明】
1:プレキャスト床版架設機 2:枠型フレーム
3:脚 4:無軌条式走行装置
5:基台 6:レール
6a:レールの下部フレーム
7:電動スライド式吊設装置 7’、7”:スライド式吊設装置
8:枠型移動架 8a:枠型移動架の上部フレーム
9:横梁
10:チェーンブロック 12:支柱
13、13’、13”:床版 14:アウトリガー
15:回転台車 W:車輪
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precast slab erection machine used in the replacement work of a precast slab of an existing bridge.
[0002]
2. Description of the Related Art Conventionally, erection of precast slabs on bridges has been carried out using large machines such as truck cranes and forklifts, portal cranes and jib cranes. However, when replacing the precast slab of an existing bridge, the weight of the work machine installed on the slab is limited by the load-carrying capacity of the slab, and during the daytime to secure the bridge's traffic in the daytime. Due to an increase in the number of cases where it is required to stop the work and remove the work machine, the following difficulties have become noticeable in each of the various work machines conventionally used.
[0003]
(1) Truck crane The truck crane can move on its own, and there is no problem in terms of removing equipment during the day. In addition, the minimum turning radius of a cantilever beam of a truck crane when a floor slab is suspended increases, and the beam rotates in a narrow work space such as a truss bridge or other bridge where structures exist on the road surface. And it becomes difficult to supply the floor slab from the rear to the front of the crane truck.
(2) Forklifts Forklifts are also capable of self-propelled operation, and there is no problem in removing equipment during the day. However, modification and installation of lifting equipment is required, and the working radius is smaller than that of truck cranes.
[0004]
(3) Girder Girder is a large-scale facility, and its assembly, disassembly, and transportation are expensive. Therefore, repeated assembling and dismantling at the site is not economically justified and cannot meet the demand for daytime removal of equipment.
(4) Portal crane The portal crane uses steel wheels for its traveling, so laying a special rail is necessary, which requires large equipment. When installing this on an existing floor slab, It is necessary that the weight of the mold crane does not exceed the load bearing capacity of the floor slab. In addition, since assembling, dismantling, and transporting the portal crane are costly, as in the case of the girder, repeating assembly and dismantling is not economically justified, and cannot meet the demand for daytime removal of equipment.
{Circle around (5)} Jib cranes Jib cranes also have large-scale facilities, and therefore have the same mechanical weight limitations and economic problems as the girder and the portal cranes.
[0005]
In view of the above-mentioned prior art, a self-propelled precast slab erection that is used in the replacement work of a precast slab of an existing bridge and that does not require assembly and dismantling during transportation is required. Offer machine.
[0006]
Means for Solving the Problems The present inventor has solved the above problems by the following means.
(1) A portal structure held by four legs, four railless traveling devices (including rubber tires or crawlers, etc.) mounted with four legs of the portal structure, and the gate Two rails arranged and fixed in the longitudinal direction at the lower part of a rectangular frame type frame at the upper part of the mold structure; and two long rails suspended from the two rails, and along the rails. A movable rectangular frame-type movable rack, a cross beam erected between two long sides of the frame-type movable rack, and movable in a longitudinal direction of the frame-type movable rack, and a floor suspended from the horizontal beam. A self-sustaining device for suspending a printing plate, and two columns vertically suspended from front ends of the two long sides of the frame-type movable rack in the same direction. A traveling precast floor slab erection machine.
(2) A portal structure held by four legs, four railless traveling devices (including rubber tires or crawlers) mounted with four legs of the portal structure, and the gate Two rails arranged and fixed in the longitudinal direction at the lower part of a rectangular frame type frame at the upper part of the mold structure; and two long rails suspended from the two rails, and along the rails. A movable rectangular frame-type movable frame, a cross beam erected between two long sides of the frame-type movable frame, and movable in a longitudinal direction of the frame-type movable frame, and the horizontal beam suspended from the horizontal beam. A suspension device for suspending a floor slab movable along the slab, and two pillars vertically suspended at respective front ends of the two long sides of the frame type movable rack in the same direction. A self-propelled precast floor slab erection machine, characterized in that:
[0007]
(3) The gate-shaped structure has a structure in which an upper frame-shaped frame and four inverted L-shaped legs are provided, and two short-side portions of the frame-shaped frame are each provided with two square cylinders side by side; The horizontal portion of the inverted L-shaped leg is inserted into the square tube portion on one side from the right and the other on the left side, so that the distance between the left and right legs can be changed. The self-propelled precast floor slab erection machine according to (1) or (2).
(4) The four legs and the struts of the portal structure form a sheath tube structure that can be extended and retracted, and the height of the portal structure can be changed. The self-propelled precast floor slab erection machine according to any one of (1) to (3).
(5) a rectangular frame-type movable rack whose long sides are respectively suspended from the two rails disposed and fixed below the frame-type frame of the portal-type structure and movable along the rails; By adopting a two-stage rail transfer system which is constructed between two long sides of the frame-type movable rack and is composed of one cross beam movable in the longitudinal direction of the frame-type movable rack, The self-propelled precast floor according to any one of the above (1) to (4), wherein the range of movement of the suspending device that is suspended and moved can be extended to the outside of the portal structure. Plate erection machine.
[0008]
(6) Two supports suspended vertically from the two long sides of the frame-type movable frame in the same direction, respectively, transfer the hanging device, which suspends the floor slab, to the outside of the portal structure. The self-propelled precast floor slab erection machine according to any one of (1) to (5), wherein the self-propelled floor slab erection machine is made safe and easy.
(7) A rotating trolley on which the floor slab transferred by the suspension device of the precast floor slab erection machine is mounted and rotated is arranged between the column and the front leg of the portal structure. The self-propelled precast floor slab erection machine according to any one of (1) to (6) above.
[0009]
Embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view of the embodiment of the present invention at the time of operation, FIG. 2 is an explanatory view showing the configuration of the embodiment of the present invention, the shortening of each member, and the accommodation direction, and FIG. FIG. 4 is a schematic explanatory view of a two-rail type transfer system according to the embodiment of the present invention, and FIGS. 5 to 7 are explanatory views of the erection operation of the precast floor slab erection machine in the embodiment of the present invention.
In the figure, 1 is a precast floor slab erection machine, 2 is a frame type frame, 3 is a leg, 4 is a railless traveling device, 5 is a base, 6 is a rail, 6a is a lower frame of the rail 6, and 7 is an electric slide type. 7 ', 7 "are slide-type hanging devices, 8 is a frame-type movable frame, 8a is an upper frame of the frame-type movable frame 8, 9 is a horizontal beam, 10 is a chain block, 11 is a brace, and 12 is a column. , 13, 13 ', and 13''are floor slabs, 14 is an outrigger, and 15 is a rotating carriage.
[0010]
【Example】
As shown in FIGS. 1 and 2, the self-propelled precast floor slab erection machine according to the embodiment of the present invention includes a rectangular frame type frame 2 having an upper gate structure and four inverted L-shaped legs 3. And two short sides of the frame-type frame have a structure in which two rectangular cylinders are juxtaposed, respectively, and the two rectangular cylinders each have an inverted L from one side on the right side and the other side from the left side. The horizontal portion of the leg 3 is inserted so that the distance between the legs 3 can be enlarged or reduced. The portal structure is mounted on a prism-shaped base 5 having two sets of right and left two railless traveling devices 4 at the front and rear, and is configured to be capable of self-running.
In addition, two H-shaped rails 6 are disposed and fixed in the lower part of the frame-shaped frame 2 in the longitudinal direction, and the two rails are extended from the two H-shaped rails 6 to the two rails. A rectangular frame type movable frame 8 is movably suspended along the rails via an electric slide type suspending device 7, and is provided between two rails 6 forming a long side of the frame type movable frame 8. A cross beam 9 is movably mounted in the longitudinal direction of the frame-type movable rack 8 via a slide-type hanging device 7 ′, and a chain block 10 as a hanging device movable along the cross beam is further mounted on the cross beam 9. Hanged.
In addition, two columns 12 are suspended from front ends of the two long sides of the frame type movable frame 8 in the same direction.
[0011]
The vertical portions of the four inverted L-shaped legs 3 constituting the portal structure and the support columns 12 have a sheath-type structure that can be extended and contracted, and the short side of the frame 2 of the portal structure. 1 and 2 by inserting and shortening the mounting structure of the leg 3 to the part, the frame-shaped structure 8, the leg 3, the column 12, and the outrigger 14 in the direction indicated by the arrow in FIG. The shape is changed to the shape at the time of transportation shown in FIG. 3 so that the precast floor slab erection machine can be transported without being disassembled.
In addition, as shown in FIG. 4A, the suspension of the frame-type movable rack 8 on the rail 6 is performed by using two electric slide-type hanging devices 7 fixed near the center of the frame-type movable rack 8. Done through. That is, as shown in FIGS. 4B and 4C, the lower portion of the electric slide hanging device 7 is fixed to the upper frame 8a of the frame type movable rack 8, and the upper portion of the electric slide hanging device 7 , A wheel W that rotates while sandwiching the rail 6 and contacting the upper surface of the lower frame 6a of the rail 6 is mounted on the shaft.
As described above, a total of two columns 12 are provided at the front ends in the same direction of the two rails forming the long sides of the frame type movable frame 8 as described above. Therefore, the two columns 12 move with the movement of the frame-type moving rack.
[0012]
Next, the floor slab erection operation of the precast slab erection machine 1 according to the embodiment of the present invention will be described. The precast floor slab erection machine 1 transported to the work site in the shape shown in FIGS. 3 and 4 self-propelled to a predetermined position by the railless traveling device 4, and then withdraws the leg 3 from the frame type frame 2. The extension of the leg 3 and the extension of the column 12 are performed, and the outrigger 14 fixes the leg 3 on the floor slab in the shape shown in FIG. At this time, it is also preferable to use a reinforcing brace (not shown) between the leg portion of the inverted L-shaped leg 3 of the gate-shaped structure and the frame frame, and between the leg 3 and the base 5.
[0013]
The erection work of the slab 13 by the precast slab erection machine 1 fixed on the slab is performed by taking the slab 13 into the precast slab erection machine 1, that is, suspending the slab 13 on the chain block 10. Lowering, then transferring and mounting the suspended floor slab 13 to the rotating carriage 15, raising the column 12, retreating the precast floor slab erection machine 1, rotating the floor slab 13 by the rotating trolley 15 90 degrees, precast floor slab erection machine 1, landing of the support 12, lifting of the floor slab 13 by the chain block 10, and installation at a predetermined position.
First, the floor slab 13 is taken into the precast floor slab erection machine 1, that is, the floor slab 13 is suspended from the chain block 10 by moving the rail between two rails forming the long side of the frame type movable rack 8. The cross beam 9 movably mounted along is moved in the direction of the arrow shown in FIG. 5A to move the chain block 10 to the center of the precast floor slab erection machine 1.
[0014]
As shown in FIG. 5 (b), the transfer and mounting of the floor slab 13 suspended on the chain block 10 to the rotating carriage 15 is performed by moving the cross beam 9 on which the chain block 10 is suspended by the frame type movable rack 8. This is performed by moving the floor slab 13 down after moving forward along the two rails forming the long sides in the direction of the arrow to the position above the rotary carriage 15 (see FIG. 6C).
[0015]
Next, the floor slab 13 is rotated. At this time, when the longitudinal dimension of the floor slab 13 is smaller than the distance between the column 12 and the front leg 3 of the portal structure, the hanging bracket of the chain block 10 is used. Since the swivel mechanism can be rotated while being suspended, there is no need to mount and rotate on the rotating carriage 15. However, when the length of the floor slab 13 in the longitudinal direction is larger than the distance between the column 12 and the front leg 3 of the portal structure, as shown in FIG. After mounting and removing from the chain block 10, the column 12 of the precast floor slab erection machine 1 is pulled up, and the portal structure is moved rearward using the railless traveling device 4 to rotate the floor slab 13. A necessary space is secured, and thereafter, the floor slab 13 is rotated by 90 degrees by the rotating carriage 15 to obtain a state shown in FIG.
[0016]
When the rotation of the floor slab 13 is completed, the portal structure which has been moved backward is advanced to the original position using the railless traveling device 4 and the strut 12 which has been pulled up is landed. The lifted floor slab 13 is again lifted by the chain block, and the existing floor slab is further forwardly moved along the two rails forming the long sides of the frame type movable rack 8 as shown in FIG. It is moved to the position where it has been removed, and then lowered while finely adjusting the position by moving the chain block 10 left and right along the cross beam 9, and installed at the position indicated by 13 ″ in FIG. 7 (f). .
In addition, what is shown as 13 'in FIG. 5 is an existing floor slab. After laying the floor slab 13 ", the precast floor slab laying machine is moved forward on this and the next floor slab is replaced. .
[0017]
When replacing the floor slab of the bridge, as shown in FIG. 5A, the existing floor slab 13 'of the part to be replaced has already been removed to form a space. Therefore, the precast floor slab erection machine 1 has no choice but to be installed in front of it. In order to install a new slab 13 in such a state, the floor slab 13 is greatly extended in front of the precast slab erection machine 1. Need to be kept. However, if a heavy slab is protruded forward, the precast slab erection machine 1 may lose its balance. To prevent this, measures such as increasing the weight of the precast slab slab erection machine 1 are necessary. However, the weight cannot be increased beyond the load-carrying capacity of the bridge slab, and there is a strong demand for weight reduction from the viewpoint of transportation.
In the embodiment of the present invention, as shown in FIG. 6 (c) and the like, the support 12 suspended from the front end of the frame type moving rack 8 of the precast floor slab erection machine 1 is attached to the tip of the removed floor slab. The precast floor slab erection machine 1 is stabilized and lightened by fixing it on a certain existing floor slab 13 'or on a bridge girder.
[0018]
According to the present invention, the following effects can be obtained.
(1) Since it is provided with a railless traveling device, it can be moved and installed at any position, and does not damage the floor slab due to the movement.
(2) Since the chain block is suspended from the portal structure via the two-stage moving mechanism of the cross beam and the frame-type movable frame, the chain block can be greatly extended in front of the portal structure. The precast slab is directly suspended from the truck immediately below the portal structure on the chain block, and is directly transferred to the front of the portal structure to set the floor slab at a predetermined position. In addition, the fear that the precast floor slab erection machine lacks balance due to the chain block projecting forward of the gate-shaped structure was suspended at the end of the frame-type movable rack drawn out of the gate-shaped structure and its tip. All operations can be performed stably because it is suppressed by the support.
(3) By providing the support in the front, the reaction force of the device at the time of erection can be distributed to six places, so that the load bearing capacity of the existing floor slab can be sufficiently cleared.
(4) Since the precast slab erection machine can be configured to be light in weight, even if it is installed on the existing slab and works, the influence on the existing slab and the bridge is small.
(5) The height and width of the precast floor slab erection machine can be reduced to dimensions that can be loaded on one truck (in the embodiment, the height is 2.4 m and the width is 2.22 m). It does not need to be disassembled and does not require any special permission under the Road Traffic Act for transportation.
(6) As described in (5) above, the precast deck slab laying machine can be transported to the site by truck without disassembly and can be lowered by self-propelling by attaching a ramp to the loading platform. Since no heavy equipment such as a crane is required for transporting the equipment, and no assembling work is required, the work can be started in a short time.
(7) When the precast slab is installed, fine adjustment of the position in the bridge axis direction and the same perpendicular direction is possible, so that the erection becomes easy.
(8) A long floor slab with a width of about 8 m can be installed by using a rotating cart together.
(9) Total costs including transportation costs, disassembly costs, etc. can be reduced.
(10) Workability is good and the process can be shortened.
(11) Since the size is within the building limits even during precast slab erection work, it can be used for all bridges regardless of bridge type and bridge scale.
(12) Since the precast floor slab erection machine is a self-propelled type, it can be easily removed, and can easily meet a demand for securing bridge traffic in the daytime even during the floor slab replacement work.
[Brief description of the drawings]
FIG. 1 is a perspective view of a working example of the present invention.
FIG. 2 is an explanatory view showing the configuration of the embodiment of the present invention and the shortening and accommodating directions of each member.
FIG. 3 is a perspective view of the embodiment of the present invention during transportation.
FIG. 4 is a schematic explanatory view of a two-stage rail type transfer system according to the embodiment of the present invention.
FIG. 5 is an explanatory view of the erection operation of the precast slab erection machine of the embodiment of the present invention.
(A) Installation of a floor slab erection machine, (b) Loading of a floor slab.
FIG. 6 is an explanatory diagram of the erection operation of the precast slab erection machine of the embodiment of the present invention.
(C) transport of the floor slab, (d) mounting of the floor slab on the rotating trolley and retreating of the floor slab erection machine.
FIG. 7 is an explanatory view of the erection operation of the precast slab erection machine of the embodiment of the present invention.
(E) Rotation of the slab erection machine and advancement of the slab erection machine, and (f) erection of the slab.
[Explanation of symbols]
1: Precast floor slab erection machine 2: Frame type frame 3: Leg 4: Railless traveling device 5: Base 6: Rail 6a: Rail lower frame 7: Electric slide type suspension device 7 ', 7 ": Slide -Type hanging device 8: Frame type movable frame 8a: Upper frame of frame type mobile frame 9: Cross beam 10: Chain block 12: Post 13, 13 ', 13 ": Floor slab 14: Outrigger 15: Rotating truck W: Wheel

Claims (7)

4本の脚で保持される門型構造体と、該門型構造体の4本の脚を搭載する4台の(ゴムタイヤ又はクローラ等を有する)無軌条式走行装置と、該門型構造体上部の長方形の枠型フレームの下部にその長手方向に配設・固定された2本のレールと、前記2本のレールにそれぞれの長辺が吊設され、かつ前記レールに沿って移動可能な長方形の枠型移動架と、前記枠型移動架の二つの長辺間に架設され、かつ前記枠型移動架の長手方向に移動可能な横梁と、前記横梁に吊設された床版を吊り下げるための吊り下げ装置と、前記枠型移動架の二つの長辺のそれぞれ同一方向の前方端部に垂設された2本の支柱とで構成されてなることを特徴とする自走式プレキャスト床版架設機。A portal structure held by four legs, four railless traveling devices (including rubber tires or crawlers) mounted with four legs of the portal structure, and the portal structure Two rails arranged and fixed in the longitudinal direction at the lower part of an upper rectangular frame type frame, and long sides of each of the two rails are suspended from the two rails and are movable along the rails A rectangular frame-type movable rack, a horizontal beam erected between two long sides of the frame-type movable frame, and movable in a longitudinal direction of the frame-type movable frame, and a floor slab suspended from the horizontal beam. A self-propelled precast, comprising: a hanging device for lowering; and two columns vertically suspended at the front ends of the two long sides of the frame type movable frame in the same direction. Floor slab erection machine. 4本の脚で保持される門型構造体と、該門型構造体の4本の脚を搭載する4台の(ゴムタイヤ又はクローラ等を有する)無軌条式走行装置と、該門型構造体上部の長方形の枠型フレームの下部にその長手方向に配設・固定された2本のレールと、前記2本のレールにそれぞれの長辺が吊設され、かつ前記レールに沿って移動可能な長方形の枠型移動架と、前記枠型移動架の二つの長辺間に架設され、かつ前記枠型移動架の長手方向に移動可能な横梁と、前記横梁に吊設され前記横梁に沿って移動可能な床版を吊り下げるための吊り下げ装置と、前記枠型移動架の二つの長辺のそれぞれ同一方向の前方端部に垂設された2本の支柱とで構成されてなることを特徴とする自走式プレキャスト床版架設機。A portal structure held by four legs, four railless traveling devices (including rubber tires or crawlers) mounted with four legs of the portal structure, and the portal structure Two rails arranged and fixed in the longitudinal direction at the lower part of an upper rectangular frame type frame, and long sides of each of the two rails are suspended from the two rails and are movable along the rails A rectangular frame-type movable frame, a cross beam erected between two long sides of the frame-type movable frame, and movable in the longitudinal direction of the frame-type movable frame, and suspended along the horizontal beam and along the horizontal beam. A suspension device for suspending a movable floor slab, and two columns suspended from front ends of the two long sides of the frame type movable frame in the same direction. Characteristic self-propelled precast floor slab erection machine. 前記門型構造体が、上部の枠型フレームと4本の逆L字型の脚とからなり、かつ枠型フレームの短辺部がそれぞれ角筒2本を並置した構造をなし、該角筒部に前記逆L字型の脚の水平部を一方は右から、もう一方は左から挿入することによって、左右の脚の間隔を変更可能に構成されてなることを特徴とする請求項1又は2に記載の自走式プレキャスト床版架設機。The gate-shaped structure has a structure in which an upper frame-shaped frame and four inverted L-shaped legs are provided, and a short side of the frame-shaped frame has two square tubes arranged side by side. The space between left and right legs can be changed by inserting a horizontal portion of the inverted L-shaped leg into one part from the right side and the other from the left side. 2. The self-propelled precast floor slab erection machine according to 2. 前記門型構造体の4本の脚、及び支柱が、伸縮可能な鞘管構造をなし、前記門型構造体の高さを変更可能に構成されてなることを特徴とする請求項1〜3のいずれか1項に記載の自走式プレキャスト床版架設機。The four legs and the struts of the portal structure form a sheath tube structure that can be extended and retracted, and the height of the portal structure can be changed. The self-propelled precast floor slab erection machine according to any one of the above items. 門型構造体の枠型フレーム下部に配設・固定された前記2本のレールにそれぞれの長辺が吊設されかつ前記レールに沿って移動可能な長方形の枠型移動架と、前記枠型移動架の二つの長辺間に架設され、かつ前記枠型移動架の長手方向に移動可能な1本の横梁とで構成された2段式レール移送方式の採用によって、床版を吊り下げて移動させる吊り下げ装置の移動範囲を門型構造体の外部にまで拡大可能としたことを特徴とする請求項1〜4のいずれか1項に記載の自走式プレキャスト床版架設機。A rectangular frame-type movable rack whose long sides are hung on the two rails disposed and fixed below the frame type frame of the portal-type structure and movable along the rails; The floor slab is suspended by adopting a two-stage rail transfer system constructed between one long side of the movable rack and one cross beam movable in the longitudinal direction of the frame type movable rack. The self-propelled precast floor slab erection machine according to any one of claims 1 to 4, wherein the range of movement of the hanging device to be moved can be extended to the outside of the portal structure. 前記枠型移動架の二つの長辺のそれぞれ同一方向の端部に垂設された2本の支柱が、床版を吊り下げた吊り下げ装置の門型構造体外部への移送を、安全かつ容易に可能にしたことを特徴とする請求項1〜5のいずれか1項に記載の自走式プレキャスト床版架設機。The two pillars vertically suspended at the ends of the two long sides of the frame-type movable frame in the same direction, respectively, make it possible to safely and safely transfer the hanging device that suspends the floor slab to the outside of the portal structure. The self-propelled precast floor slab erection machine according to any one of claims 1 to 5, wherein the self-propelled floor slab erection machine is easily enabled. プレキャスト床版架設機の吊り下げ装置によって移送された床版を搭載して回転させる回転台車を、前記支柱と門型構造体の前方脚との間に配置してなることを特徴とする請求項1〜6のいずれか1項に記載の自走式プレキャスト床版架設機。A rotating carriage for mounting and rotating the floor slab transferred by the suspension device of the precast floor slab erection machine, is disposed between the column and the front leg of the portal structure. The self-propelled precast floor slab erection machine according to any one of claims 1 to 6.
JP2003092781A 2003-03-28 2003-03-28 Self-propelled precast slab erection machine Expired - Lifetime JP3968579B2 (en)

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Publication number Priority date Publication date Assignee Title
JP2004300689A (en) * 2003-03-28 2004-10-28 Pc Bridge Co Ltd Mobile pre-cast floor slab erection machine
JP2006274736A (en) * 2005-03-30 2006-10-12 Hitachi Zosen Corp Construction method for pc floor system and pc floor system
JP2007182728A (en) * 2006-01-10 2007-07-19 Nippon Steel Engineering Co Ltd Construction method of bridge, and side floor slab mounting device for bridge
JP2010059748A (en) * 2008-09-08 2010-03-18 Sumitomo Mitsui Construction Co Ltd Apparatus and method for constructing bridge girder
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JP2016166453A (en) * 2015-03-09 2016-09-15 オリエンタル白石株式会社 Floor slab construction device
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Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4927034A (en) * 1972-07-07 1974-03-11
JPH01192693A (en) * 1988-01-26 1989-08-02 Kitagawa Iron Works Co Ltd Bridge crane
JP3027712U (en) * 1996-02-07 1996-08-13 株式会社架設工事佐々木組 Gate crane for paving slab installation
JPH1181242A (en) * 1997-09-03 1999-03-26 Mitsui Miike Mach Co Ltd Precast block installation device
JPH11131427A (en) * 1997-10-31 1999-05-18 Mitsui Miike Mach Co Ltd Floor board replacing machine for concrete bridge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4927034A (en) * 1972-07-07 1974-03-11
JPH01192693A (en) * 1988-01-26 1989-08-02 Kitagawa Iron Works Co Ltd Bridge crane
JP3027712U (en) * 1996-02-07 1996-08-13 株式会社架設工事佐々木組 Gate crane for paving slab installation
JPH1181242A (en) * 1997-09-03 1999-03-26 Mitsui Miike Mach Co Ltd Precast block installation device
JPH11131427A (en) * 1997-10-31 1999-05-18 Mitsui Miike Mach Co Ltd Floor board replacing machine for concrete bridge

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* Cited by examiner, † Cited by third party
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JP2006274736A (en) * 2005-03-30 2006-10-12 Hitachi Zosen Corp Construction method for pc floor system and pc floor system
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