JP4023616B2 - Form suspension support device for concrete placement in tunnel - Google Patents

Form suspension support device for concrete placement in tunnel Download PDF

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JP4023616B2
JP4023616B2 JP2004096667A JP2004096667A JP4023616B2 JP 4023616 B2 JP4023616 B2 JP 4023616B2 JP 2004096667 A JP2004096667 A JP 2004096667A JP 2004096667 A JP2004096667 A JP 2004096667A JP 4023616 B2 JP4023616 B2 JP 4023616B2
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suspension
rigid frame
tunnel
rope
formwork
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JP2005282097A (en
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実 土田
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島工業株式会社
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Description

本発明は、トンネル内でコンクリート打設用型枠を吊下する際に利用する補助装置に関するものである。   The present invention relates to an auxiliary device used when a concrete casting form is suspended in a tunnel.

この種の吊下補助装置は、トンネル内で組み立てられたコンクリート打設用型枠支持装置で支持台に天井型枠等を載置したりその支持台上から天井型枠等を取り外したりする場合、支持台とトンネルの天井内周面との間の搬送空間で、ウインチやチェーンブロックや移動式クレーンなどにより天井型枠等を吊下する際に利用する。   This type of suspension assist device is used when placing a ceiling formwork on a support stand or removing a ceiling formwork from the support stand with a concrete placement form support device assembled in a tunnel. It is used when a ceiling formwork is suspended by a winch, a chain block, a mobile crane or the like in a transfer space between the support base and the ceiling inner peripheral surface of the tunnel.

図４に示すように、従来の吊下補助装置５は、剛性枠体６と型枠吊下部７と索連結部８とを備えている。この索連結部８は、滑車２０を有し、剛性枠体６の外側に取り付けられて剛性枠体６から外側へ突出している。トンネルの天井内周面に取り付けられた索連結部２３の滑車２３ａと前記吊下補助装置５における索連結部８の滑車２０との間に吊下索２４が巻き掛けられている。前記吊下補助装置５における型枠吊下部７に例えば天井型枠４を連結する。例えば、ウインチ（図示せず）により吊下索２４を引いたり緩めたりすると、吊下補助装置５に吊下された天井型枠４を昇降させることができる。   As shown in FIG. 4, the conventional suspension assisting device 5 includes a rigid frame body 6, a formwork suspension portion 7, and a cable connection portion 8. The cord connecting portion 8 has a pulley 20, is attached to the outside of the rigid frame 6, and protrudes outward from the rigid frame 6. A suspension cable 24 is wound between a pulley 23a of the cable connection part 23 attached to the inner peripheral surface of the tunnel and a pulley 20 of the cable connection part 8 in the suspension assisting device 5. For example, the ceiling mold 4 is connected to the mold suspension 7 in the suspension assisting device 5. For example, when the suspension cable 24 is pulled or loosened by a winch (not shown), the ceiling formwork 4 suspended by the suspension assisting device 5 can be moved up and down.

しかし、索連結部８が剛性枠体６から外側へ突出しているので、吊下補助装置５が大型化してトンネル内の狭い搬送空間で嵩張る問題があった。そのため、天井型枠等の搬送作業が行いにくくなっていた。   However, since the cable connecting portion 8 protrudes outward from the rigid frame 6, there is a problem that the suspension assisting device 5 is enlarged and bulky in a narrow conveyance space in the tunnel. This makes it difficult to carry the ceiling formwork and the like.

この発明は、トンネル内の狭い搬送空間で天井型枠等の搬送作業を容易にすることを目的としている。   An object of the present invention is to facilitate the work of transporting a ceiling formwork or the like in a narrow transport space in a tunnel.

後記実施形態の図面（図１〜３及び図５）の符号を援用して本発明を説明する。
請求項１の発明にかかるトンネル（１）内のコンクリート打設用型枠吊下補助装置（５）は、下記のように構成されている。 The present invention will be described with reference to the reference numerals of the drawings (FIGS. 1 to 3 and FIG. 5) of the embodiment described later.
The concrete casting form suspension auxiliary device (5) in the tunnel (1) according to the invention of claim 1 is configured as follows.

この吊下補助装置（５）は、剛性枠体（６）と、トンネル（１）の内周面（１ａ）に沿って配設されるコンクリート打設用型枠（４）を連結してこの剛性枠体（６）に吊下し得る型枠吊下部（７）と、吊下索（２４）が連結される索連結部（８）とを備えている。この剛性枠体（６）の内側にこの索連結部（８）を配設して剛性枠体（６）の外側へ突出させないようにしている。ここに「剛性枠体（６）の内側に索連結部（８）を配設して剛性枠体（６）の外側へ突出させない」とは、剛性枠体（６）の外形状で形取られる内側の領域から少なくとも索連結部（８）の主体部分が外側へ突出しないことを意味し、索連結部（８）の一部分が若干外側へ突出していてもよいことを意味する。ちなみに、この索連結部（８）については、請求項２の発明のように滑車（２０）を備えたものばかりではなく、図示しないが、例えばフックを引き掛けることができる形態のものであってもよい。   The suspension assisting device (5) connects the rigid frame (6) and the concrete placing form (4) disposed along the inner peripheral surface (1a) of the tunnel (1). A formwork suspension part (7) that can be suspended from the rigid frame body (6) and a cable connection part (8) to which the suspension cable (24) is connected are provided. The cable connecting portion (8) is disposed inside the rigid frame (6) so as not to protrude to the outside of the rigid frame (6). Here, “the cable connecting portion (8) is disposed inside the rigid frame (6) and is not projected outside the rigid frame (6)” means that the outer shape of the rigid frame (6) is shaped. This means that at least the main portion of the cord connecting portion (8) does not protrude outward from the inner region to be formed, and it means that a portion of the cord connecting portion (8) may slightly protrude outward. By the way, the rope connecting portion (8) is not only provided with a pulley (20) as in the invention of claim 2, but is not shown, for example, it can be hooked. Also good.

請求項１の発明では、吊下補助装置（５）が小型化してトンネル（１）内の狭い搬送空間（Ｓ）で嵩張らないので、天井型枠（４）等の搬送作業を容易にすることができる。
請求項２の発明にかかるトンネル（１）内のコンクリート打設用型枠吊下補助装置（５）は、下記のように構成されている。 In the invention of claim 1, since the suspension assisting device (5) is downsized and is not bulky in the narrow transport space (S) in the tunnel (1), it is easy to transport the ceiling formwork (4) and the like. Can do.
The concrete casting form suspension auxiliary device (5) in the tunnel (1) according to the invention of claim 2 is configured as follows.

この吊下補助装置（５）は、剛性枠体（６）と、トンネル（１）の内周面（１ａ）に沿って配設されるコンクリート打設用型枠（４）を連結してこの剛性枠体（６）に吊下し得る型枠吊下部（７）と、吊下索（２４）が連結される索連結部（８）とを備えている。この索連結部（８）は吊下索（２４）が巻き掛けられる一または複数（二以上）の滑車（２０）を備えている。この滑車（２０）の回転中心線（２１ａ）をこの剛性枠体（６）の内側に配設している。ここに「剛性枠体（６）の内側」とは、剛性枠体（６）の外形状で形取られる内側の領域をいう。その際、この剛性枠体（６）の内側にこの索連結部（８）を配設して剛性枠体（６）の外側へ突出させないようにすることが好ましい。   The suspension assisting device (5) connects the rigid frame (6) and the concrete placing form (4) disposed along the inner peripheral surface (1a) of the tunnel (1). A formwork suspension part (7) that can be suspended from the rigid frame body (6) and a cable connection part (8) to which the suspension cable (24) is connected are provided. The cord connecting portion (8) includes one or a plurality (two or more) pulleys (20) around which the suspension cord (24) is wound. The rotation center line (21a) of the pulley (20) is disposed inside the rigid frame (6). Here, the “inside of the rigid frame (6)” refers to an inner region formed by the outer shape of the rigid frame (6). In that case, it is preferable to arrange this rope connection part (8) inside this rigid frame (6) so as not to protrude outside the rigid frame (6).

請求項２の発明では、滑車（２０）の回転中心線（２１ａ）を剛性枠体（６）の内側に配設して滑車（２０）が剛性枠体（６）の外側へ極力突出しないようにして吊下補助装置（５）を小型化しているので、トンネル（１）内の狭い搬送空間（Ｓ）で吊下補助装置（５）が嵩張らず、天井型枠（４）等の搬送作業を容易にすることができる。ちなみに、前記索連結部（８）において滑車（２０）を複数にした場合、個々の滑車（２０）を小型化して剛性枠体（６）の内側に収容し易くなるとともに、吊下索（２４）に生じる張力も小さくして吊下索（２４）の直径を細くすることができる。   In the invention of claim 2, the rotation center line (21a) of the pulley (20) is disposed inside the rigid frame (6) so that the pulley (20) does not protrude as far as possible outside the rigid frame (6). Since the suspension assisting device (5) is downsized, the suspension assisting device (5) is not bulky in the narrow transportation space (S) in the tunnel (1), and the ceiling work (4) and the like are transported. Can be made easier. Incidentally, in the case where a plurality of pulleys (20) are provided in the rope connecting portion (8), each pulley (20) can be made smaller and easily accommodated inside the rigid frame (6), and the suspension rope (24 ) Can be reduced, and the diameter of the suspension rope (24) can be reduced.

請求項１または請求項２の発明を前提とする請求項３の発明において、前記索連結部（８）は前記剛性枠体（６）に対し着脱可能に取り付けられている。請求項３の発明では、索連結部（８）の形態例えば滑車（２０）の数などを吊下条件に応じて変更することができるので、天井型枠（４）等の搬送作業をより一層容易にすることができる。   In the invention of claim 3 premised on the invention of claim 1 or claim 2, the cord connecting portion (8) is detachably attached to the rigid frame (6). In the invention of claim 3, since the form of the rope connecting portion (8), for example, the number of pulleys (20) can be changed according to the suspension condition, the work of transporting the ceiling mold (4) and the like is further performed. Can be easily.

本発明は、吊下補助装置（５）がトンネル（１）内の狭い搬送空間（Ｓ）で嵩張らないので、天井型枠（４）等の搬送作業を容易にすることができる。   In the present invention, since the suspension assisting device (5) is not bulky in the narrow transfer space (S) in the tunnel (1), the transfer work of the ceiling formwork (4) and the like can be facilitated.

以下、本発明の一実施形態にかかるトンネル内のコンクリート打設用型枠吊下補助装置について図１〜３及び図５を参照して説明する。
図１（ａ）に示すように、トンネル１内で組み立てられたコンクリート打設用型枠支持装置２で支持台３に天井型枠４等を載置したりその支持台３上から天井型枠４等を取り外したりする場合、支持台３とトンネル１の天井内周面１ａとの間の搬送空間Ｓで、図示しないウインチやチェーンブロックや移動式クレーンなどにより天井型枠４等を吊下する。図１（ｂ）（ｃ）（ｄ）に示すように、そのような吊下時に利用する吊下補助装置５は、剛性枠体６と型枠吊下部７と索連結部８とを備えている。この剛性枠体６は、長手方向で平行に延びる両主枠部９と、この両主枠部９の両端部間で幅方向へ架設された端枠部１０と、この両端枠部１０間で両主枠部９間に幅方向へ架設された複数（４枚）の中間枠部１１，１２と、中央の両中間枠部１１の上方で両主枠部９上に取着された台部１３とを備えている。前記型枠吊下部７においては、この各中間枠部１１，１２及び両端枠部１０の両端部に隣接して両主枠部９から外側へブラケット１４，１５，１６が幅方向へ突設され、この各ブラケット１４，１５，１６には吊下レバー１７が幅方向へ回動可能に支持されている。この各吊下レバー１７はこの各ブラケット１４，１５，１６に対し着脱することができる。この両ブラケット１４、両ブラケット１５及び両ブラケット１６は、それぞれ、両端枠部１０間の長手方向中央位置Ｃに対し等距離にある。 DESCRIPTION OF EMBODIMENTS Hereinafter, a concrete casting form suspension auxiliary device for placing a concrete in a tunnel according to an embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1 (a), a ceiling formwork 4 or the like is placed on a support stand 3 by a concrete placement formwork support device 2 assembled in a tunnel 1, or a ceiling formwork is formed on the support stand 3. When removing 4 etc., the ceiling formwork 4 etc. are suspended in the conveyance space S between the support stand 3 and the ceiling inner peripheral surface 1a of the tunnel 1 by a winch, a chain block, a mobile crane, etc. (not shown). . As shown in FIGS. 1B, 1C, and 1D, the suspension assisting device 5 used at the time of such suspension includes a rigid frame body 6, a formwork suspension portion 7, and a rope connecting portion 8. Yes. The rigid frame 6 includes two main frame portions 9 extending in parallel in the longitudinal direction, an end frame portion 10 extending in the width direction between both end portions of the main frame portions 9, and the both end frame portions 10. A plurality of (four) intermediate frame portions 11 and 12 laid in the width direction between both main frame portions 9 and a base portion mounted on both main frame portions 9 above both intermediate frame portions 11 in the center. 13. In the formwork hanging part 7, brackets 14, 15, and 16 are provided in the width direction so as to protrude from both the main frame parts 9 to the outside, adjacent to both end parts of the intermediate frame parts 11 and 12 and the both end frame parts 10. The brackets 14, 15, 16 support a suspension lever 17 that is rotatable in the width direction. Each suspension lever 17 can be attached to and detached from each bracket 14, 15, 16. Both the brackets 14, both the brackets 15, and both the brackets 16 are equidistant from the longitudinal center position C between the both end frame portions 10.

前記索連結部８においては、図２（ａ）（ｂ）（ｃ）（ｄ）に示すように、互いに平行な両着脱板１８間に複数（４枚）の支持板１９が互いに平行に並設され、この各支持板１９間にそれぞれ滑車２０が嵌め込まれ、各支持板１９に挿着された支軸２１が各滑車２０に挿通されて各滑車２０が支軸２１に対し回転可能に支持されている。この索連結部８は、両主枠部９と中央の両中間枠部１１と両台部１３との間で形成された吊下室２２に嵌め込まれ、両着脱板１８で両主枠部９に対し着脱可能にねじ締結されている。この各滑車２０の回転中心線２１ａは前記剛性枠体６の内側で吊下室２２に配設され、索連結部８が剛性枠体６の外側へ突出しないようになっている。   As shown in FIGS. 2 (a), (b), (c), and (d), a plurality of (four) support plates 19 are arranged in parallel between the parallel attachment / detachment plates 18 in the cord connecting portion 8. A pulley 20 is fitted between each support plate 19, and a support shaft 21 inserted into each support plate 19 is inserted into each pulley 20 so that each pulley 20 is rotatably supported with respect to the support shaft 21. Has been. The cord connecting portion 8 is fitted into a suspension chamber 22 formed between the main frame portions 9, the middle intermediate frame portions 11, and the base portions 13, and both the main frame portions 9 are connected by both detachable plates 18. The screw is detachably attached to the screw. The rotation center line 21 a of each pulley 20 is disposed in the suspension chamber 22 inside the rigid frame body 6 so that the cord connecting portion 8 does not protrude to the outside of the rigid frame body 6.

図３及び図５（ａ）（ｂ）に示すように、トンネル１の天井内周面１ａに取り付けられた索連結部２３の各滑車２３ａ（定滑車）と前記吊下補助装置５における索連結部８の各滑車２０（動滑車）との間に吊下索２４を巻き掛け、この吊下索２４の一端部を剛性枠体６に連結するとともに、この吊下索２４の他端部を例えばウインチ（図示せず）に連結する。これらの滑車２３ａ，２０間で巻き掛けられる吊下索２４の巻掛け状態については、種々変更することができる。また、前記吊下補助装置５における型枠吊下部７の各吊下レバー１７に天井型枠４を連結する。その場合、天井型枠４のサイズに応じて各吊下レバー１７を使い分ける。このウインチ（図示せず）により吊下索２４の他端部を引いたり緩めたりすると、吊下補助装置５に吊下された天井型枠４を昇降させることができる。   As shown in FIGS. 3 and 5 (a) (b), each pulley 23a (fixed pulley) of the cable connecting portion 23 attached to the ceiling inner peripheral surface 1a of the tunnel 1 and the cable connection in the suspension assisting device 5 A suspension cable 24 is wound around each pulley 20 (moving pulley) of the portion 8, and one end of the suspension cable 24 is connected to the rigid frame 6, and the other end of the suspension cable 24 is connected to the suspension cable 24. For example, it is connected to a winch (not shown). Various changes can be made to the suspended state of the suspension rope 24 wound between the pulleys 23a and 20. In addition, the ceiling mold 4 is connected to each suspension lever 17 of the mold suspension 7 in the suspension assisting device 5. In that case, each suspension lever 17 is properly used according to the size of the ceiling formwork 4. When the other end portion of the suspension cable 24 is pulled or loosened by this winch (not shown), the ceiling formwork 4 suspended by the suspension assisting device 5 can be moved up and down.

（ａ）はトンネル内を正面側から見て概略的に示す横断面図であり、（ｂ）は本実施形態にかかるコンクリート打設用型枠吊下補助装置を示す平面図であり、（ｃ）は同じく正面図であり、（ｄ）は同じく側面図である。(A) is a cross-sectional view schematically showing the inside of a tunnel when viewed from the front side, (b) is a plan view showing a concrete casting form suspension auxiliary device according to the present embodiment, (c ) Is a front view, and (d) is a side view. （ａ）は図１（ｂ）で平面側から見た部分拡大断面図であり、（ｂ）は上記吊下補助装置の索連結部を示す平面図であり、（ｃ）は（ｂ）のＡ−Ａ線断面図であり、（ｄ）は同じく側面図である。(A) is the elements on larger scale seen from the plane side in FIG.1 (b), (b) is a top view which shows the rope connection part of the said suspension assistance apparatus, (c) is (b) It is AA sectional view, (d) is a side view similarly. 上記吊下補助装置を利用して天井型枠を吊下した状態を示す一部切欠き正面図である。It is a partially notched front view which shows the state which suspended the ceiling formwork using the said suspension assistance apparatus. 天井型枠を吊下した従来の状態を示す一部切欠き正面図である。It is a partially notched front view which shows the conventional state which suspended the ceiling formwork. （ａ）（ｂ）はそれぞれサイズの異なる天井型枠を上記吊下補助装置を利用して吊下した状態を示す一部切欠き側面図である。(A) (b) is a partially notched side view which shows the state which suspended the ceiling formwork from which size differs, respectively using the said suspension auxiliary | assistance apparatus.

符号の説明Explanation of symbols

１…トンネル、１ａ…天井内周面、４…天井型枠、５…吊下補助装置、６…剛性枠体、７…型枠吊下部、８…索連結部、２０…滑車、２１ａ…滑車の回転中心線、２２…吊下室、２４…吊下索。   DESCRIPTION OF SYMBOLS 1 ... Tunnel, 1a ... Ceiling inner peripheral surface, 4 ... Ceiling formwork, 5 ... Suspension auxiliary device, 6 ... Rigid frame, 7 ... Formwork suspension part, 8 ... Rope connection part, 20 ... Pulley, 21a ... Pulley Rotation center line, 22 ... Hanging chamber, 24 ... Hanging rope.

Claims (3)

剛性枠体と、トンネルの内周面に沿って配設されるコンクリート打設用型枠を連結してこの剛性枠体に吊下し得る型枠吊下部と、吊下索が連結される索連結部とを備え、この剛性枠体の内側にこの索連結部を配設して剛性枠体の外側へ突出させないようにしたことを特徴とするトンネル内のコンクリート打設用型枠吊下補助装置。 A rigid frame, a formwork hanging portion that can be hung on the rigid frame by connecting a concrete casting form arranged along the inner peripheral surface of the tunnel, and a rope to which the suspension rope is connected And a support for suspending the formwork for placing concrete in the tunnel, characterized in that the cable connection is disposed inside the rigid frame so as not to protrude outside the rigid frame. apparatus. 剛性枠体と、トンネルの内周面に沿って配設されるコンクリート打設用型枠を連結してこの剛性枠体に吊下し得る型枠吊下部と、吊下索が連結される索連結部とを備え、この索連結部は吊下索が巻き掛けられる滑車を備え、この滑車の回転中心線をこの剛性枠体の内側に配設したことを特徴とするトンネル内のコンクリート打設用型枠吊下補助装置。 A rigid frame, a formwork hanging portion that can be hung on the rigid frame by connecting a concrete casting form arranged along the inner peripheral surface of the tunnel, and a rope to which the suspension rope is connected A concrete portion in a tunnel, characterized in that the cable connection portion includes a pulley on which a suspended rope is wound, and the rotation center line of the pulley is disposed inside the rigid frame. Formwork suspension assist device. 前記索連結部は前記剛性枠体に対し着脱可能に取り付けられていることを特徴とする請求項１または請求項２に記載のトンネル内のコンクリート打設用型枠吊下補助装置。
3. The concrete suspension support device for placing concrete in a tunnel according to claim 1, wherein the rope connecting portion is detachably attached to the rigid frame body.
JP2004096667A 2004-03-29 2004-03-29 Form suspension support device for concrete placement in tunnel Expired - Lifetime JP4023616B2 (en)

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JP4023616B2 true JP4023616B2 (en) 2007-12-19

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JP7037821B2 (en) * 2019-03-28 2022-03-17 有限会社 伊藤 Metal fittings for lifting the foam of the center

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