JP3289203B2 - Blanking formwork device for PC beam - Google Patents
Blanking formwork device for PC beamInfo
- Publication number
- JP3289203B2 JP3289203B2 JP31919993A JP31919993A JP3289203B2 JP 3289203 B2 JP3289203 B2 JP 3289203B2 JP 31919993 A JP31919993 A JP 31919993A JP 31919993 A JP31919993 A JP 31919993A JP 3289203 B2 JP3289203 B2 JP 3289203B2
- Authority
- JP
- Japan
- Prior art keywords
- cotter
- hanging
- gutter
- formwork
- weir plate
- 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.)
- Expired - Fee Related
Links
Landscapes
- Moulds, Cores, Or Mandrels (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、予め工場生産されてコ
ンクリート建築のラーメン架構に使用される中抜き形状
のＰＣ梁を製造するための型枠装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork apparatus for manufacturing a hollow PC beam which is produced in advance in a factory and is used for a rigid frame of a concrete building.
【０００２】[0002]
【従来の技術】中抜き形状のＰＣ梁は、予めコンクリー
ト工場で生産され、鉄筋コンクリート造の建築における
ラーメン架構に用いられる鉄筋コンクリート製品であ
る。このＰＣ梁の製造は、従来、次のようにして行われ
ている。2. Description of the Related Art A hollow PC beam is a reinforced concrete product produced in advance in a concrete factory and used for a rigid frame in a reinforced concrete building. The manufacture of this PC beam is conventionally performed as follows.
【０００３】すなわち図３の断面図において、参照符号
１は複数の堰板１ａを組み合わせた樋状型枠であり、当
該断面と直交する方向に延在されている。そしてまず、
この樋状型枠１内には、その長手方向に延在され堰板１
ａに沿うように配列される複数の下端主筋２及び側部腹
筋３と、この下端主筋２及び側部腹筋３の外側を取り巻
くように外側樋状型枠１の長手方向所定間隔で配列され
る多数の肋筋４を組み込む。次に、下端主筋２、側部腹
筋３及び肋筋４で包囲された部分に、可撓材質からなる
多数の柱状バルーン５を挿入し、その各中空部５ａにノ
ズルを連結して圧縮空気を送り込むことによって、順次
柱状バルーン５を膨らませる。そして、全ての柱状バル
ーン５を膨らませたら、互いに密着した柱状バルーン５
群と外側樋状型枠１の内面との間にコンクリートＣを打
設する。That is, in the cross-sectional view of FIG. 3, reference numeral 1 denotes a gutter-shaped form in which a plurality of dam plates 1a are combined, and extends in a direction orthogonal to the cross-section. And first,
In the gutter-shaped form 1, there is a weir plate 1 extending in the longitudinal direction thereof.
A plurality of lower main muscles 2 and side abdominal muscles 3 are arranged along a, and outer gutter-shaped formwork 1 is arranged at predetermined longitudinal intervals so as to surround the outer sides of the lower main muscles 2 and the side abdominal muscles 3. A number of ribs 4 are incorporated. Next, a large number of columnar balloons 5 made of a flexible material are inserted into a portion surrounded by the lower main muscle 2, the side abdominal muscles 3 and the ribs 4, and a nozzle is connected to each hollow portion 5a to supply compressed air. By feeding, the columnar balloon 5 is sequentially inflated. Then, when all the columnar balloons 5 are inflated, the columnar balloons 5 that are in close contact with each other are set.
Concrete C is cast between the group and the inner surface of the outer gutter-shaped formwork 1.
【０００４】コンクリートＣの打設後、所定の養生期間
が経過してこのコンクリートＣに水和反応による所要の
強度が発現されたら、柱状バルーン５を、空気を抜いて
萎縮させてから、コンクリートＣの内側から取り外し、
外側樋状型枠１を脱型する。これによって、柱状バルー
ン５が充填されていた部分が空洞の、中抜き形状のＰＣ
梁が得られる。[0004] After a predetermined curing period has elapsed after the concrete C was cast and the required strength due to the hydration reaction has developed in the concrete C, the columnar balloon 5 is deflated by removing air, and then the concrete C is deflated. Remove from inside,
The outer gutter-shaped formwork 1 is released. As a result, the hollow portion of the PC filled with the pillar-shaped balloon 5 is hollow.
A beam is obtained.
【０００５】[0005]
【発明が解決しようとする課題】上記従来技術によれ
ば、次のような問題が指摘される。その第一の問題は、
型枠のセッティングに際して、中抜き形状を得るための
柱状バルーン５の一本一本に順次圧縮空気を送り込んで
膨らませなければならず、その作業に時間が掛かること
である。また、第二の問題は、打設されたコンクリート
Ｃの所定の養生期間が経過してから柱状バルーン５を取
り外す際には、この柱状バルーン５から空気を抜かなけ
ればならないので、脱型にも時間がかかることである。
また、第三の問題は、上記工程で得られた中抜きＰＣ梁
の内面には、各柱状バルーン５に対応した多数の溝状凹
凸やバリ状物が形成されているので、見た目が悪く、製
品としての美観に劣ることである。According to the above prior art, the following problems are pointed out. The first problem is,
When setting the mold, it is necessary to sequentially inject compressed air into each of the pillar-shaped balloons 5 to obtain a hollow shape and inflate the balloon, which takes time. Further, the second problem is that when the columnar balloon 5 is removed after a predetermined curing period of the poured concrete C has elapsed, it is necessary to release air from the columnar balloon 5, so It takes time.
The third problem is that the inner surface of the hollowed-out PC beam obtained in the above process is formed with a large number of groove-like irregularities and burrs corresponding to the respective column-shaped balloons 5, so that the appearance is poor. It is inferior in aesthetics as a product.
【０００６】したがって、本発明が解決しようとする技
術的課題は、型枠のセッティングや脱型を容易・迅速に
行うことができると共に、製造される中抜きＰＣ梁の内
面の美観を向上させることにある。[0006] Therefore, the technical problem to be solved by the present invention is to easily and quickly set and remove the formwork and to improve the aesthetics of the inner surface of the hollow PC beam to be manufactured. It is in.
【０００７】[0007]
【課題を解決するための手段】上述した技術的課題は、
本発明によって有効に解決することができる。すなわち
本発明に係るＰＣ梁用中抜き型枠装置は、樋状型枠内に
向けて上下に進退移動される吊り棒と、この吊り棒の両
側に配置され前記樋状型枠内を移動可能であると共に下
端に互いに対向する嵌合部が形成された一対の堰板と、
両端が前記吊り棒及び前記堰板に回動自在に連結された
複数のリンク部材と、前記吊り棒の下端に設けられたコ
ッタとを備え、前記リンク部材における吊り棒との連結
位置はこのリンク部材における堰板との連結位置より高
位置にあり、前記コッタは、前記吊り棒が前記堰板に対
して相対的に下方へ変位した時に前記リンク部材によっ
て互いに離隔動作される前記両堰板の下端嵌合部間に嵌
め込まれるものであり、前記下端嵌合部間に前記コッタ
が嵌め込まれた前記両堰板と前記樋状型枠との間に打設
したコンクリートの養生過程で、前記吊り棒に下方への
荷重を加え、前記両堰板に締め固め力を与えるように構
成される。Means for Solving the Problems The technical problems described above are:
This can be effectively solved by the present invention. That is, the hollow formwork apparatus for PC beams according to the present invention is a hanging rod which is moved up and down toward the inside of the gutter-shaped formwork, and is movable on the both sides of the hanging rod and within the gutter-shaped formwork. A pair of weir plates formed with fitting portions facing each other at the lower end,
A plurality of link members, both ends of which are rotatably connected to the hanging bar and the weir plate, and a cotter provided at a lower end of the hanging bar, and a linking position of the link member with the hanging bar is determined by the link. The cotter is located at a position higher than the connection position with the weir plate in the member, and the cotter is a member of the two weir plates that are separated from each other by the link member when the hanging bar is displaced relatively downward with respect to the weir plate. Fit between lower end fittings
The cotter is inserted between the lower end fitting portions.
Is placed between the two weir plates and the gutter-shaped formwork in which
During the curing process of the concrete,
It is configured to apply a load and to apply a compaction force to both the weir plates .
【０００８】[0008]
【作用】本発明の中抜き型枠装置によれば、吊り棒が堰
板に対して上下に相対的に変位すると、この吊り棒と堰
板の間のリンク部材の連結角度が変化し、これによって
一対の堰板が左右に開閉動作される。特に、前記リンク
部材と吊り棒との連結位置はこのリンク部材と堰板との
連結位置より高位置にあることから、吊り棒を前記堰板
に対して相対的に下方へ変位させることによって、前記
リンク部材が両側へ開かれるので、両堰板が互いに離隔
動作され、吊り棒と共に下方へ変位するコッタが、離隔
動作される両堰板の下端嵌合部間に進入して嵌め込ま
れ、この堰板の下端間の隙間を閉塞する。According to the hollow formwork apparatus of the present invention, when the suspension rod is displaced up and down relative to the weir plate, the connection angle of the link member between the suspension rod and the weir plate changes, thereby causing a pair of suspension members. Are opened and closed horizontally. In particular, since the connecting position of the link member and the hanging bar is at a higher position than the connecting position of the link member and the dam plate, by displacing the hanging bar relatively downward with respect to the dam plate, Since the link member is opened to both sides, both dam plates are separated from each other, and a cotter displaced downward together with the hanging rod is inserted between lower end fitting portions of the separated dam plates and fitted. Close the gap between the lower ends of the weir plates.
【０００９】したがって、中抜き形状のＰＣ梁を製造す
るに際しては、上述のように吊り棒を下方へ動作させる
ことによって、両堰板を互いに離隔動作させると共にそ
の下端間をコッタで塞いだ状態とした当該中抜き型枠装
置と、その外側の樋状型枠との間にコンクリートを打設
する。そして打設されたコンクリートの養生過程では、
吊り棒に下方への荷重を加えて両堰板を更に開かせるよ
うにすることによって、コンクリートの締め固め力を与
えることができ、養生期間経過後、吊り棒を上方へ移動
させることによって、コッタによる両堰板の下端嵌合部
間の閉塞が解除されると共に、両堰板が互いに接近方向
へ変位されてコンクリートから離れるので、容易に脱型
が行われる。Therefore, when manufacturing a hollow PC beam, the hanging bar is moved downward as described above, so that both dam plates are moved apart from each other and the lower ends thereof are closed with a cotter. Concrete is cast between the hollow formwork device thus formed and the gutter-like formwork on the outside thereof. And, during the curing process of the poured concrete,
Apply a downward load to the hanging bar to open both dams further
To provide concrete compaction force.
After the curing period elapses, by moving the hanging rod upward, the blockage between the lower end fitting portions of the two dam plates by the cotter is released, and the two dam plates are displaced in the approaching direction to each other. Since it separates from concrete, it is easily removed from the mold.
【００１０】[0010]
【実施例】図１は、本発明に係るＰＣ梁用中抜き型枠装
置の好適な一実施例を示す断面図であり、この図におい
て参照符号１０は吊り棒、２０はこの吊り棒１０の両側
に対称に配置された一対の堰板、３０は吊り棒１０と各
堰板２０とを可動的に連結しているリンク部材、４０は
吊り棒１０の下端に設けられたコッタをそれぞれ示して
いる。堰板２０及びコッタ４０は、図示の断面に対して
直交する方向に延在されており、吊り棒１０は、堰板２
０及びコッタ４０と平行に設けられた架台１１にその長
手方向所定間隔で垂設されており、この架台１１を介し
て、昇降装置（図示省略）により上下移動される。FIG. 1 is a sectional view showing a preferred embodiment of a blanking formwork apparatus for PC beams according to the present invention. In this figure, reference numeral 10 denotes a hanging bar, and 20 denotes both sides of the hanging bar 10. A pair of weir plates symmetrically arranged, 30 is a link member movably connecting the hanging bar 10 and each weir plate 20, and 40 is a cotter provided at the lower end of the hanging bar 10. The weir plate 20 and the cotter 40 extend in a direction orthogonal to the illustrated cross section, and the hanging rod 10
The gantry 11 is vertically suspended at a predetermined interval in the longitudinal direction of the gantry 11 provided in parallel with the cotter 40 and the cotter 40.
【００１１】各堰板２０は、板面がほぼ垂直な側面部２
１と、その下端から互いの対向方向に延びて板面がほぼ
水平な下面部２２と、この下面部２２の互いの対向端部
に形成されて上部が開くように傾斜した嵌合部２３とか
らなり、図示の断面形状がほぼＬ字形を呈する。また、
各堰板２０の内側面には、その板面に沿って多数の桟材
２４が縦横に設けられている。Each weir plate 20 has a side surface portion 2 whose plate surface is substantially vertical.
A lower surface portion 22 extending from the lower end thereof in the direction facing each other and having a substantially horizontal plate surface; and a fitting portion 23 formed at the opposite end portions of the lower surface portion 22 and inclined so that the upper portion is open. , And the cross-sectional shape shown is substantially L-shaped. Also,
A large number of crosspieces 24 are provided on the inner surface of each weir plate 20 vertically and horizontally along the plate surface.
【００１２】リンク部材３０は、一本の吊り棒１０に対
して、上下二か所に左右一対ずつ設けられており、各リ
ンク部材３０の一端は吊り棒１０に高さ調整可能に固定
された固定部材１２にピン３１を介して回動自在に連結
されており、他端は左右の各堰板２０の桟材２４にピン
３２を介して回動自在に連結されている。また、各リン
ク部材３０における吊り棒１０との連結位置すなわちピ
ン３１の高さは、このリンク部材３０における堰板２０
（桟材２４）との連結位置すなわちピン３２の高さより
高位置にある。したがって、リンク部材３０は、通常は
図示のように、互いに山形の連結形状をなしており、堰
板２０に対して吊り棒１０を相対的に下方へ変位させる
と、その両側のリンク部材３０が左右へ開かれるように
変位されることによって、堰板２０が左右へ離隔動作さ
れるようになる。なお、参照符号１３は、固定部材１２
を吊り棒１０に対して高さ変更自在に固定するために開
設された取付孔である。The link members 30 are provided in a pair on the right and left at two locations above and below the single hanging bar 10, and one end of each link member 30 is fixed to the hanging bar 10 so that the height can be adjusted. The other end is rotatably connected to the fixing member 12 via a pin 31, and the other end is rotatably connected to the crosspiece 24 of each of the left and right weir plates 20 via a pin 32. Further, the connection position of each link member 30 with the suspension bar 10, that is, the height of the pin 31, is determined by the weir plate 20 of this link member 30.
(Pin 24), ie, at a position higher than the height of the pin 32. Therefore, the link members 30 usually have a mountain-shaped connection shape as shown in the figure, and when the hanging bar 10 is displaced relatively downward with respect to the weir plate 20, the link members 30 on both sides thereof are By being displaced so as to open to the left and right, the weir plate 20 is moved to the left and right. Reference numeral 13 denotes the fixing member 12.
Is a mounting hole formed to fix the height of the hanging rod 10 to the hanging rod 10 freely.
【００１３】コッタ４０は、その幅方向両側面４１が、
堰板２０の下端の嵌合部２３と対応した傾斜面をなして
おり、吊り棒１０の下端に適当な取付手段（図示省略）
を介して着脱自在に取り付けられている。そしてこのコ
ッタ４０は、吊り棒１０の下方移動に伴う堰板２０の離
隔動作によって、その下端の嵌合部２３間がある程度開
かれた時に、吊り棒１０と共に下方移動しながらこの嵌
合部２３間に上方から進入して嵌め込まれるようになっ
ている。The cotter 40 has two side surfaces 41 in the width direction.
An inclined surface corresponding to the fitting portion 23 at the lower end of the weir plate 20 is formed, and a suitable attaching means (not shown) is attached to the lower end of the hanging bar 10.
It is detachably attached via. The cotter 40 moves downward with the hanging bar 10 while moving downwardly with the hanging bar 10 when the lower end between the fitting portions 23 is opened to some extent by the separating operation of the weir plate 20 accompanying the downward movement of the hanging bar 10. It is designed to enter from above and be fitted.
【００１４】この実施例によるＰＣ梁用中抜き型枠装置
を用いた中抜き形状のＰＣ梁の製作は、次のような工程
で行われる。The manufacture of a hollow PC beam using the hollow frame device for PC beams according to this embodiment is performed in the following steps.
【００１５】まず、図１に一点鎖線で示すように、複数
の堰板１ａによって上端が開放された樋状型枠１を組み
立て、架台１１に吊支された当該中抜き型枠装置の下側
へ配置する。樋状型枠１内には、その長手方向に延在さ
れ堰板１ａに沿うように配列される複数の下端主筋２及
び側部腹筋３と、この下端主筋２及び側部腹筋３の外側
を取り巻くように樋状型枠１の長手方向所定間隔で配列
される多数の肋筋４によって、予め適切な配筋が行われ
る。なお、言うまでもなく、この配筋は当該中抜き型枠
装置の挿入が許容されるように行われる。First, as shown by a dashed line in FIG. 1, a gutter-shaped formwork 1 whose upper end is opened by a plurality of weir plates 1a is assembled, and the lower side of the hollow formwork apparatus suspended from a gantry 11 is mounted. To place. A plurality of lower main bars 2 and side abdominal muscles 3 which extend in the longitudinal direction and are arranged along the dam plate 1a, and outer sides of the lower main bar 2 and the side abdominal muscles 3 are arranged in the gutter-shaped formwork 1. An appropriate number of reinforcing bars 4 are arranged in advance by a plurality of ribs 4 arranged at predetermined intervals in the longitudinal direction of the gutter-shaped formwork 1 so as to surround them. Needless to say, this arrangement of the reinforcing bars is performed so that the insertion of the hollow frame device is permitted.
【００１６】次に、図示されていない昇降装置によっ
て、架台１１を介してこの実施例による中抜き型枠装置
を樋状型枠１内に向けて降下させる。このとき、コッタ
４０は両堰板２０の嵌合部２３の上方の非嵌合位置にあ
って、両堰板２０はその嵌合部２３同士が互いに閉じた
状態に接近した位置にあり、この状態で樋状型枠１内の
肋筋４及び側部腹筋３の内側空間に挿入される。両堰板
２０は、その下面部２２が下端主筋２に接触した時点で
下方移動が妨げられるので、その後も吊り棒１０の下方
移動を継続させると、両側のリンク部材３０は、吊り棒
１０と共に下方へ変位するピン３１を介して開かれるよ
うに変位し、これによって両堰板２０は互いに離隔動作
される。Next, the hollow formwork apparatus according to this embodiment is lowered into the gutter-like formwork 1 through the gantry 11 by a lifting device (not shown). At this time, the cotter 40 is at the non-fitting position above the fitting portion 23 of the two dam plates 20, and the two dam plates 20 are at positions where the fitting portions 23 are close to each other in a closed state. In this state, it is inserted into the inner space of the ribs 4 and the side abdominal muscles 3 in the gutter-shaped formwork 1. Since both dam plates 20 are prevented from moving downward when the lower surface portion 22 comes into contact with the lower main bar 2, when the hanging bar 10 continues to move downward thereafter, the link members 30 on both sides are moved together with the hanging bar 10. It is displaced so as to be opened via the pin 31 which is displaced downward, whereby the two dam plates 20 are moved apart from each other.
【００１７】一方、吊り棒１０と共に下方へ変位するコ
ッタ４０が、互いに開かれる両堰板２０の嵌合部２３間
へ向けて進入して行く。ここで、両堰板２０の互いの離
隔動作は、ピン３１の移動によるリンク部材３０の傾斜
運動によって行われるので、その離隔速度が漸次減速さ
れる。このため、やがてコッタ４０の傾斜した幅方向両
側面４１が嵌合部２３と密接嵌合し、その間の隙間を閉
鎖する。On the other hand, the cotter 40 displaced downward together with the hanging bar 10 enters between the fitting portions 23 of the two dam plates 20 which are opened mutually. Here, the separating operation of the two dam plates 20 is performed by the tilting movement of the link member 30 due to the movement of the pin 31, so that the separating speed is gradually reduced. For this reason, the slanted side surfaces 41 in the width direction of the cotter 40 are closely fitted with the fitting portion 23 and the gap therebetween is closed.
【００１８】コッタ４０が嵌合されたら、昇降装置によ
る吊り棒１０の降下を停止させ、両堰板２０及びコッタ
４０の外面と、樋状型枠１の内面との間に画成された断
面コ字形空間Ｓにコンクリートを充填する。このコンク
リートは、必要に応じてコンクリートバイブレータで振
動を与えることによって締め固められるが、コンクリー
ト養生期間中に、吊り棒１０に下方への荷重を加えるこ
とによって、堰板２０を介して大きな締め固め力を与え
ることもできる。When the cotter 40 is fitted, the descent of the hanging rod 10 by the lifting device is stopped, and the cross section defined between the outer surfaces of both dam plates 20 and the cotter 40 and the inner surface of the gutter-shaped formwork 1. The U-shaped space S is filled with concrete. This concrete is compacted by vibrating it with a concrete vibrator as needed, but during the concrete curing period, a large compaction force is applied through the weir plate 20 by applying a downward load to the hanging bar 10. Can also be given.
【００１９】コンクリート打設後、所定の養生期間が経
過してこのコンクリートに水和反応による所要の強度が
発現されたら、昇降装置によって、架台１１を介して吊
り棒１０を上昇させる。すると、吊り棒１０の上昇によ
って、これと一体のコッタ４０が両堰板２０の下端の嵌
合部２３間から上方へ抜き出されるように移動すると共
に、左右のリンク部材３０同士の連結角度が小さくなる
ように変位されるので、両堰板２０が互いに接近方向に
移動し、その外面がコンクリートＣ（成形されたＰＣ
梁）の内面から剥離する。そして、コッタ４０が嵌合部
２３間から完全に上方へ抜け出した後、この嵌合部２３
同士が接触した時点で、両堰板２０のそれ以上の接近動
作が行われなくなるので、この堰板２０は吊り棒１０の
上昇動作と共に吊り上げられ、コンクリートＣの内面か
ら脱型される。After a predetermined curing period elapses after the concrete is cast, when the required strength of the concrete is developed by the hydration reaction, the lifting rod 10 is raised via the gantry 11 by the lifting device. Then, by the lifting of the hanging rod 10, the cotter 40 integrated with the hanging rod 10 is moved upward so as to be pulled out from between the fitting portions 23 at the lower ends of the both weir plates 20, and the connection angle between the left and right link members 30 is reduced. Since the two dam plates 20 are displaced so as to become smaller, the two dam plates 20 move in the approaching direction to each other, and the outer surfaces thereof are concrete C (formed PC
From the inner surface of the beam). Then, after the cotter 40 completely comes out of the space between the fitting portions 23,
At the point of contact, no further approaching movement of the two weir plates 20 is performed, so that this weir plate 20 is lifted with the lifting operation of the hanging bar 10 and is removed from the inner surface of the concrete C.
【００２０】したがって、この実施例のＰＣ梁用中抜き
型枠装置によれば、ＰＣ梁の中抜き部の内面が、堰板２
０とその嵌合部２３に嵌め込まれるコッタ４０によって
滑らかに造形される。また、この中抜き型枠装置のセッ
ティング及びコンクリート養生後の脱型が、昇降装置に
よる昇降操作だけで行われるため、堰板２０の解体等が
不要であり、作業が極めて迅速に行われる。Therefore, according to the hollow formwork apparatus for PC beams of this embodiment, the inner surface of the hollow portion of the PC beam is
0 and the cotter 40 fitted in the fitting portion 23 form the shape smoothly. In addition, since the setting of the hollow frame device and the removal of the mold after curing of the concrete are performed only by the lifting and lowering operation by the lifting and lowering device, the dismantling of the weir plate 20 and the like are unnecessary, and the operation is performed extremely quickly.
【００２１】コッタ４０は、種々の大きさのものを用意
しておき、これを吊り棒１０の下端に付け替えると共
に、コッタ４０の大きさに応じて固定部材１２及びピン
３１によるリンク部材３０と吊り棒１０の連結高さを変
更することによって、ＰＣ梁の中抜き部の大きさを自在
に設定することができる。例えば、コッタ４０の幅を図
示のものよりも大きくした場合は、吊り棒１０に対する
固定部材１２の固定位置を図示の位置よりも下方へずら
すことによって、図１の状態よりもさらに大きく堰板２
０が開いた時点でその嵌合部２２とコッタ４０が完全に
嵌合される。The cotter 40 is prepared in various sizes. The cotter 40 is attached to the lower end of the hanging bar 10 and is linked by the fixing member 12 and the pin 31 according to the size of the cotter 40. By changing the connection height between the member 30 and the hanging bar 10, the size of the hollow portion of the PC beam can be freely set. For example, when the width of the cotter 40 is made larger than that shown in the drawing, the fixing position of the fixing member 12 with respect to the hanging rod 10 is shifted downward from the position shown in the drawing, so that the weir plate 2 becomes larger than the state shown in FIG.
When 0 is opened, the fitting portion 22 and the cotter 40 are completely fitted.
【００２２】[0022]
【発明の効果】本発明のＰＣ梁用中抜き型枠装置によれ
ば、次のような効果が奏される。 (1) この中抜き型枠装置のセッティング及び脱型が、吊
り棒の昇降動作のみによって行われ、しかも堰板による
型枠の組み立てや解体作業を伴わないため、作業を迅速
に行うことができる。 (2) 成形された中抜きＰＣ梁の内面形状が、中抜き型枠
装置の両堰板及びその間を閉鎖するコッタの外面によっ
て造形されたものであるため、製品として仕上がりがき
れいである。 (3) コンクリート打設後の締め固め機能を有するので、
製品強度を向上させることができる。According to the hollow frame forming apparatus for PC beams of the present invention, the following effects can be obtained. (1) The setting and demolding of this blanking formwork device is performed only by the lifting and lowering operation of the hanging bar, and the work can be performed quickly because it does not involve the assembling and dismantling work of the formwork by the weir plate. . (2) Since the inner surface shape of the formed hollow PC beam is formed by the outer surfaces of the cotters closing the two dam plates of the hollow frame device and the gap therebetween, the finish is beautiful as a product. (3) Since it has a compaction function after casting concrete,
Product strength can be improved.
【図１】本発明に係るＰＣ梁用中抜き型枠装置の好適な
一実施例を、その長手方向と直角に切断して示す断面図
である。FIG. 1 is a cross-sectional view showing a preferred embodiment of a blanking formwork apparatus for PC beams according to the present invention, which is cut at a right angle to a longitudinal direction thereof.
【図２】上記実施例の型枠装置の脱型時の動作を、長手
方向と直角に切断して示す断面図である。FIG. 2 is a cross-sectional view showing an operation of the mold apparatus of the embodiment at the time of demolding, which is cut at a right angle to a longitudinal direction.
【図３】従来技術によるＰＣ梁の製造工程を、それに用
いられる型枠の長手方向と直角に切断して示す断面図で
ある。FIG. 3 is a cross-sectional view showing a process of manufacturing a PC beam according to a conventional technique, which is cut at a right angle to a longitudinal direction of a mold used for the beam.
１ 樋状型枠 １０ 吊り棒 ２０ 堰板 ２３ 嵌合部 ３０ リンク部材 ４０ コッタ Ｃ コンクリート DESCRIPTION OF SYMBOLS 1 Gutter-shaped formwork 10 Hanging rod 20 Weir plate 23 Fitting part 30 Link member 40 Cotta C Concrete
Claims (2)
り棒と、 この吊り棒の両側に配置され前記樋状型枠内を移動可能
であると共に下端に互いに対向する嵌合部が形成された
一対の堰板と、 両端が前記吊り棒及び堰板に回動自在に連結された複数
のリンク部材と、 前記吊り棒の下端に設けられたコッタと、 を備え、 前記リンク部材における吊り棒との連結位置はこのリン
ク部材における堰板との連結位置より高位置にあり、 前記コッタは、前記吊り棒が前記堰板に対して相対的に
下方へ変位した時に前記リンク部材によって互いに離隔
動作される前記両堰板の下端嵌合部間に嵌め込まれるも
のであり、 前記下端嵌合部間に前記コッタが嵌め込まれた前記両堰
板と前記樋状型枠との間に打設したコンクリートの養生
過程で、前記吊り棒に下方への荷重を加え、前記両堰板
に締め固め力を与えること を特徴とするＰＣ梁用中抜き
型枠装置。1. A hanging rod which moves up and down into a gutter-shaped formwork, and a fitting part which is arranged on both sides of the hanging rod, is movable in the gutter-shaped formwork, and has a lower end facing each other. And a plurality of link members both ends of which are rotatably connected to the hanging bar and the weir plate, and a cotter provided at a lower end of the hanging bar. The connection position with the suspension bar in the above is located at a higher position than the connection position with the weir plate in this link member, the cotter is, by the link member when the suspension bar is displaced downward relative to the weir plate The two dam plates that are separated from each other are fitted between lower end fitting portions of the dam plates.
The two weirs in which the cotter is fitted between the lower end fitting portions
Curing of concrete poured between a plate and the gutter form
In the process, a downward load is applied to the hanging bar,
A blanking formwork device for PC beams, characterized in that a compacting force is applied to the frame.
るＰＣ梁用中抜き型枠装置。2. The hollow frame forming apparatus for PC beams according to claim 1, wherein the cotter is detachable from the hanging rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31919993A JP3289203B2 (en) | 1993-11-26 | 1993-11-26 | Blanking formwork device for PC beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31919993A JP3289203B2 (en) | 1993-11-26 | 1993-11-26 | Blanking formwork device for PC beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07148721A JPH07148721A (en) | 1995-06-13 |
| JP3289203B2 true JP3289203B2 (en) | 2002-06-04 |
Family
ID=18107526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31919993A Expired - Fee Related JP3289203B2 (en) | 1993-11-26 | 1993-11-26 | Blanking formwork device for PC beam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3289203B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4629632B2 (en) * | 2006-08-07 | 2011-02-09 | トヨタ工機株式会社 | Form for forming cylindrical concrete product and its inner mold |
| JP2013256022A (en) * | 2012-06-11 | 2013-12-26 | Kyocera Communication Systems Co Ltd | Outer frame member |
-
1993
- 1993-11-26 JP JP31919993A patent/JP3289203B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07148721A (en) | 1995-06-13 |
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