JPH0730333Y2 - Square tubular concrete product formwork - Google Patents
Square tubular concrete product formworkInfo
- Publication number
- JPH0730333Y2 JPH0730333Y2 JP1990094811U JP9481190U JPH0730333Y2 JP H0730333 Y2 JPH0730333 Y2 JP H0730333Y2 JP 1990094811 U JP1990094811 U JP 1990094811U JP 9481190 U JP9481190 U JP 9481190U JP H0730333 Y2 JPH0730333 Y2 JP H0730333Y2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- inner mold
- base
- side wall
- product
- 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 - Lifetime
Links
Landscapes
- Sewage (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Description
【考案の詳細な説明】 《産業上の利用分野》 本考案は、ボックスカルバートや桝等の角筒状コンクリ
ート製品を製造する型枠に関する。DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a formwork for manufacturing rectangular tubular concrete products such as box culverts and pits.
《従来の技術》 角筒状コンクリート製品の型枠は、空洞部分が縦の状態
で製造する縦打ち式（コバ打ち式ともいう）と横の状態
で製造する横打ち式（平打ち式ともいう）とがあり、縦
打ち式は製品面に気泡によるピンホールがほとんど発生
しないでコンクリート肌の良好な製品を製造できるとい
う利点がある。<Prior art> The formwork of a square tubular concrete product is a vertical casting type (also referred to as edge punching type) in which the hollow portion is manufactured vertically and a horizontal casting type (also referred to as flat casting type) in which it is manufactured horizontally. ), There is an advantage that the vertical casting method can produce a product having a good concrete surface without generating pinholes due to bubbles on the product surface.
従来の縦打ち式の型枠は、基台上に縦に配置された筒状
の外型と内型からなり、この基台、外型および内型で形
成された筒型の空間にコンクリートを流し込み、硬化さ
せるものである。硬化した製品を取り出すために外型は
４辺の側壁がばらばらとなり開放される。また、内型は
数個の部分に分解されるか、特公昭53−13485号等に示
されるように径を縮小、すなわちしぼることにより硬化
した製品の中から取り出していた。Conventional vertical formwork consists of a cylindrical outer mold and an inner mold vertically arranged on a base, and concrete is placed in the cylindrical space formed by the base, outer mold, and inner mold. It is poured and cured. In order to take out the cured product, the side walls of the outer side of the outer mold are separated and opened. Also, the inner mold was taken out from the cured product by being decomposed into several parts or by reducing the diameter, that is, squeezing as shown in Japanese Patent Publication No. 53-13485.
《考案が解決しようとする課題》 従来の縦打ち式の型枠は、脱型に際して内型を硬化した
製品の中から取り出し、逆に組み立てに際しては内型を
外型内に配置しなければならない。このため、クレーン
を使用した内型の移動の作業手間が煩雑で、内型の置場
も必要で広い作業場が必要であった。また、内型は基台
から抜き取る構造のために剛性に問題があり、特に上部
において寸法の狂いが生じていた。すなわち、コンクリ
ートを流し込む圧力により内型上部が横移動し、製品の
厚みにムラが生じるのである。本考案はこのような課題
を解決するためになされたものである。<Problems to be solved by the invention> In the conventional vertical casting formwork, the inner mold must be taken out from the cured product of the inner mold at the time of demolding, and conversely, the inner mold must be placed inside the outer mold at the time of assembly. . For this reason, the labor of moving the inner mold using the crane is complicated, and a storage space for the inner mold is also required, which requires a large work space. Further, the inner mold has a problem in rigidity because it is pulled out from the base, and in particular, there is a dimensional deviation in the upper part. That is, the pressure of pouring concrete causes the upper part of the inner mold to move laterally, which causes unevenness in the product thickness. The present invention has been made to solve such a problem.
《課題を解決するための手段》 本考案は、基台上に縦に配置された筒状の外型と内型の
間にコンクリートを充填して角筒状コンクリート製品を
製造する型枠において、内型のＬ字状側壁部分を基台と
一体の内型固定部となし、該内型固定部の両端に蝶番を
設け、該内型固定部と対向する隅部付近に蝶番と分裂部
を設け、内型を折畳可能とし、前記内型固定部と対向す
る外型の１辺の側壁を基台と一体の外型固定面となし、
外型の他の３辺を開放可能としたことを特徴とする角筒
状コンクリート製品の型枠である。<< Means for Solving the Problem >> The present invention relates to a formwork for manufacturing a square tubular concrete product by filling concrete between a cylindrical outer die and an inner die vertically arranged on a base. The L-shaped side wall portion of the inner mold is used as an inner mold fixing portion integrated with the base, hinges are provided at both ends of the inner mold fixing portion, and a hinge and a split portion are provided in the vicinity of a corner facing the inner mold fixing portion. The inner mold is foldable, and the side wall of one side of the outer mold facing the inner mold fixing portion is an outer mold fixing surface integrated with the base,
It is a mold for a rectangular tubular concrete product characterized in that the other three sides of the outer mold can be opened.
《作用》 本考案型枠は、内型に基台と一体にＬ字状の内型固定部
を設けたため、きわめて高い剛性を得ることができ、上
部の寸法精度が飛躍的に向上される。内型固定部の両端
に蝶番を設け、内型固定部と対向する隅部付近に蝶番と
分裂部を設けたので、脱型時は内型を分裂部から、第１
図のように、４ピースに折畳むことができ、内型を製品
の中から取りだすことがないので作業能率や作業スペー
スが改善される。<Operation> Since the mold of the present invention is provided with the L-shaped inner mold fixing portion integrally with the base on the inner mold, extremely high rigidity can be obtained and the dimensional accuracy of the upper part is dramatically improved. Since the hinges are provided at both ends of the inner mold fixing portion, and the hinge and the split portion are provided near the corners facing the inner mold fixing portion, the inner die is separated from the split portion by the first
As shown in the figure, it can be folded into 4 pieces and the inner mold is not taken out from the product, so the work efficiency and work space are improved.
内型固定部と対向する外型の１辺の側壁を基台と一体の
外型固定面としたので、外型の剛性が飛躍的に大きくな
り、製品の寸法精度がさらに向上する。従来のこの種の
型枠では、型枠の「倒れ」によりどうしても上部に大き
な寸法誤差を生じていたが、本考案の型枠は、内型外型
共に固定部分を有するので上部の寸法誤差を従来の1/10
以下とすることができる。Since the side wall of one side of the outer die facing the inner die fixing portion is the outer die fixing surface integrated with the base, the rigidity of the outer die is dramatically increased, and the dimensional accuracy of the product is further improved. In this type of conventional formwork, a large dimensional error was inevitably caused by the "tilt" of the formwork, but since the formwork of the present invention has a fixed portion for both the inner mold and the outer mold, the dimensional error of the upper part 1/10 of conventional
It can be:
製品の脱型は第１図の矢印Ｂ方向に製品をやや移動させ
ながら上方に吊り上げればよい。外型固定面は、同図に
示されるように脱型時のじゃまにはならない。To remove the product from the mold, the product may be lifted upward while slightly moving in the direction of arrow B in FIG. As shown in the figure, the outer mold fixing surface does not interfere with the demolding.
《実施例》 図面は本考案の１実施例に関し、第１図は脱型状態の型
枠の上面図、第２図は組立状態の上面図、第３図は第２
図におけるAA線断面図である。<< Embodiment >> The drawings relate to one embodiment of the present invention. FIG. 1 is a top view of a mold in a demolded state, FIG. 2 is a top view of an assembled state, and FIG.
It is a sectional view taken along the line AA in the figure.
本実施例の型枠は、外型１、内型10および基台22からな
る。これらはいずれもＨ型鋼、Ｉ型鋼、Ｃ型鋼、Ｌ型鋼
等の構造材と鉄板を組合わせた構成としているが図面で
は細部を省略して表わしている。The formwork of this embodiment comprises an outer mold 1, an inner mold 10 and a base 22. Each of these has a structure in which structural materials such as H-section steel, I-section steel, C-section steel, and L-section steel are combined with an iron plate, but details are omitted in the drawings.
外型１は、４辺の側壁で筒状に組立てられ、基台22上に
配置される。４辺の側壁のうち１辺の側壁は、第３図に
示されるごとく、基台22と一体に堅固に設けられた外型
固定面２となっている。他の側壁はいずれも開放可能で
あり、側壁３、４は外型固定面２に蝶番６により蝶着さ
れ、側壁５は、第３図のごとく、足８の車輪９が基台22
に設けられたレール７上を走行することによりスライド
する。開放可能な側壁はすべてを側壁５のようなスライ
ト式とすることもできるし、また、蝶番を基台に設けた
傾倒式も採用可能である。The outer mold 1 is assembled into a cylindrical shape with four side walls, and is placed on the base 22. As shown in FIG. 3, one of the four side walls is the outer die fixing surface 2 that is firmly provided integrally with the base 22. All the other side walls can be opened, and the side walls 3 and 4 are hinged to the outer mold fixing surface 2 by the hinges 6, and the side wall 5 has the wheels 9 of the feet 8 on the base 22 as shown in FIG.
It slides by traveling on the rail 7 provided on the. The side walls that can be opened may be all slid type like the side wall 5, or a tilt type in which a hinge is provided on a base can be adopted.
内型10は第２図のごとく、筒状に形成され、第３図のご
とく基台上かつ外型内に配置される。内型10には基台22
と一体に堅固に設けられたＬ字状の内型固定部11があ
る。他の側壁部分12、13、14は折畳可能となっている。
すなわち、内型固定部11の一端に側壁部分12が蝶番15に
より蝶着され、更にその先に側壁部分13が蝶番16により
蝶着され、内型固定部の他端には側壁部分14が蝶番17に
より蝶着されている。側壁部分13、14の先端は分裂部20
として互いに会合する。蝶番16および分裂部20は内型固
定部11の対向する隅部21付近に面取りハンチを挟んで配
置されている。分裂部20は留め金具18により緊結され
る。留め金具は公知のものを用いればよい。側壁部分12
には折畳を容易にするために車輪19が設けられている。The inner mold 10 is formed in a tubular shape as shown in FIG. 2, and is arranged on the base and inside the outer mold as shown in FIG. Base 22 for inner mold 10
There is an L-shaped inner mold fixing portion 11 that is firmly provided integrally with the inner mold fixing portion 11. The other side wall portions 12, 13, 14 are foldable.
That is, the side wall portion 12 is hinged to the one end of the inner die fixing portion 11 by the hinge 15, the side wall portion 13 is further hinged to the tip thereof by the hinge 16, and the side wall portion 14 is hinged to the other end of the inner die fixing portion 11. 17 is hinged. The tip of the side wall portions 13 and 14 is the split portion 20.
To meet each other as. The hinge 16 and the split portion 20 are arranged in the vicinity of the facing corner portion 21 of the inner die fixing portion 11 with a chamfered haunch therebetween. The split portion 20 is tightly connected by the fastener 18. Known fasteners may be used. Side wall part 12
Wheels 19 are provided on the to facilitate folding.
型枠は第２図のごとく組立てられた状態で、筒状の空間
にコンクリートを充填し硬化させる。脱型するときは、
図示しない締付金具を外して外型３、４、５を開放し、
内型はまず留め金具18を外し、第１図に示すごとく、側
壁部分13、12の順に折り畳み、さらに側壁部分14を折り
畳む。この状態で製品23を矢印Ｂの方向にわずかに動か
すと、製品23は外型固定面２及び内型固定部11から完全
に離脱しフリーとなる。そして製品23をクレーンで吊り
上げるのである。With the mold frame assembled as shown in FIG. 2, concrete is filled into the cylindrical space and hardened. When demolding,
Remove the clamps (not shown) to open the outer molds 3, 4, and 5,
For the inner mold, first, the fastener 18 is removed, the side wall portions 13 and 12 are folded in this order as shown in FIG. 1, and the side wall portion 14 is further folded. When the product 23 is slightly moved in the direction of the arrow B in this state, the product 23 is completely detached from the outer die fixing surface 2 and the inner die fixing portion 11 and becomes free. The product 23 is then lifted by a crane.
型枠の組立ては脱型時と逆の作業を行なえばよい。Assembling of the form may be performed in the reverse order of the demolding.
《考案の効果》 本考案型枠は、内型を取り出さないので、作業時間が大
幅に短縮でき、内型置場が不要で作業場を広く利用でき
る。クレーン作業は製品の脱型時のみでよく製造工程が
合理化される。また、内型および外型が基台と一体に固
定されているので寸法精度がよく型枠上部であっても製
品の肉厚にムラが生じることがない。<Effect of the invention> The mold of the present invention does not take out the inner mold, so that the working time can be significantly reduced, and the work space can be widely used without the need for the inner mold storage space. Crane work is often done only when the product is demolded, and the manufacturing process is rationalized. Further, since the inner mold and the outer mold are integrally fixed to the base, the dimensional accuracy is good and the thickness of the product does not become uneven even in the upper part of the mold.
図面は本考案の１実施例に関し、第１図は脱型状態の型
枠の上面図、第２図は組立状態の上面図、第３図は第２
図におけるAA線断面図である。 １……外型、２……外型固定面、３・４・５……側壁、
６……蝶番、７……レール、８……足、９……車輪、10
……内型、11……内型固定部、12・13・14……側壁部
分、15・16・17……蝶番、18……留め金具、19……車
輪、20……分裂部、21……隅部、22……基台、23……製
品The drawings relate to one embodiment of the present invention. FIG. 1 is a top view of a mold in a demolded state, FIG. 2 is a top view of an assembled state, and FIG.
It is a sectional view taken along the line AA in the figure. 1 ... Outer mold, 2 ... Outer mold fixing surface, 3,4,5 ... Side wall,
6 ... Hinge, 7 ... Rail, 8 ... Foot, 9 ... Wheel, 10
…… Inner mold, 11 …… Inner mold fixing part, 12 ・ 13 ・ 14 …… Side wall part, 15 ・ 16 ・ 17 …… Hinges, 18 …… Fasteners, 19 …… Wheels, 20 …… Splitting part, 21 …… Corner, 22 …… Base, 23 …… Product
Claims (1)
の間にコンクリートを充填して角筒状コンクリート製品
を製造する型枠において、内型のＬ字状側壁部分を基台
と一体の内型固定部となし、該内型固定部の両端に蝶番
を設け、該内型固定部と対向する隅部付近に蝶番と分裂
部を設け、内型を折畳可能とし、前記内型固定部と対向
する外型の１辺の側壁を基台と一体の外型固定面とな
し、外型の他の３辺を開放可能としたことを特徴とする
角筒状コンクリート製品の型枠1. An L-shaped side wall portion of an inner mold in a mold for filling a space between a cylindrical outer mold and an inner mold vertically arranged on a base to fill with concrete. Is an inner mold fixing part integrated with the base, hinges are provided at both ends of the inner mold fixing part, and hinges and splitting parts are provided near the corners facing the inner mold fixing part so that the inner mold can be folded. In addition, the side wall of one side of the outer die facing the inner die fixing portion is an outer die fixing surface integrated with the base, and the other three sides of the outer die can be opened. Concrete product formwork
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990094811U JPH0730333Y2 (en) | 1990-09-11 | 1990-09-11 | Square tubular concrete product formwork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990094811U JPH0730333Y2 (en) | 1990-09-11 | 1990-09-11 | Square tubular concrete product formwork |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0452004U JPH0452004U (en) | 1992-05-01 |
| JPH0730333Y2 true JPH0730333Y2 (en) | 1995-07-12 |
Family
ID=31833051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990094811U Expired - Lifetime JPH0730333Y2 (en) | 1990-09-11 | 1990-09-11 | Square tubular concrete product formwork |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0730333Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08183012A (en) * | 1994-12-29 | 1996-07-16 | Nankai Plywood Kk | Roll clipper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03327Y2 (en) * | 1986-03-14 | 1991-01-09 |
-
1990
- 1990-09-11 JP JP1990094811U patent/JPH0730333Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0452004U (en) | 1992-05-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |