JPH0326642B2 - - Google Patents
Info
- Publication number
- JPH0326642B2 JPH0326642B2 JP7967283A JP7967283A JPH0326642B2 JP H0326642 B2 JPH0326642 B2 JP H0326642B2 JP 7967283 A JP7967283 A JP 7967283A JP 7967283 A JP7967283 A JP 7967283A JP H0326642 B2 JPH0326642 B2 JP H0326642B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- formwork
- inner frame
- concrete
- frame
- 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
Links
- 238000009415 formwork Methods 0.000 claims description 40
- 239000004567 concrete Substances 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000011178 precast concrete Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Moulds, Cores, Or Mandrels (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、下水道・地下道などにおいて曲線
布設のできない曲率半径の小さな場合に使用され
るコンクリート曲管、特に、アーチ部を有する断
面略馬蹄形のプレキヤストコンクリート製品を製
造するための型枠に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to concrete curved pipes used in cases where the radius of curvature is too small to allow curved construction in sewers, underground passages, etc., and in particular, concrete curved pipes having an approximately horseshoe-shaped cross section with an arch. This invention relates to formwork for manufacturing precast concrete products.
この種のコンクリート曲管は、内部に空胴部を
有するとともにある角度で屈曲しているため、前
記空胴部を形成する内枠の解体が困難なことから
脱型が容易でない。
This type of concrete bent pipe has an internal cavity and is bent at a certain angle, so it is difficult to demold the inner frame that forms the cavity, making it difficult to demold.
この発明は、このような事情に鑑みて提案され
たもので、その目的は、比較的簡単な構成で脱型
の容易なコンクリート曲管製造用型枠を提供する
ことにある。
The present invention has been proposed in view of the above circumstances, and its purpose is to provide a formwork for manufacturing bent concrete pipes that has a relatively simple structure and is easy to demold.
〔発明の構成・作用〕
この発明に係るコンクリート曲管製造用型枠
は、内枠と外枠を有し、上部斜管と下部斜管とが
角度θで接合されているコンクリート曲管を管軸
方向を上下として製造する型枠であつて、内枠
は、接合位置において着脱自在に接続された上部
斜管用内枠と下部斜管用内枠とからなり、これら
内枠と外枠とは、角度θだけ揺動して、前記上部
斜管の管軸が鉛直方向に沿う位置と、前記下部斜
管の管軸が鉛方向に沿う位置とに位置決めされる
ように構成し、上部斜管の管軸が鉛直方向に沿う
位置で、コンクリートを打設し、脱型に際して
は、このような状態から外枠および上部斜管用内
枠を取外した後、下部斜管の管軸が鉛直方向に沿
う位置になるように揺動させて製品を鉛直方向に
吊上げて下部斜管用内枠から離脱させるようにし
たものである。[Structure and operation of the invention] The formwork for manufacturing a concrete curved pipe according to the present invention has an inner frame and an outer frame, and a concrete curved pipe in which an upper inclined pipe and a lower inclined pipe are joined at an angle θ. The formwork is manufactured with the axial direction as the top and bottom, and the inner frame consists of an inner frame for an upper diagonal pipe and an inner frame for a lower diagonal pipe, which are removably connected at the joining position, and these inner frames and outer frames are The structure is configured such that the upper diagonal tube is swung by an angle θ to be positioned in a position where the tube axis of the upper diagonal tube is along the vertical direction and a tube axis of the lower diagonal tube is positioned along the vertical direction. When concrete is poured at a position where the pipe axis runs vertically, and when demolding, remove the outer frame and inner frame for the upper inclined pipe, and then place the pipe axis of the lower inclined pipe along the vertical direction. The product is swung into position, lifted vertically, and removed from the inner frame for the lower diagonal pipe.
以下、この発明を図示する一実施例に基づいて
説明する。この実施例は、第１図に示すように、
アーチ部１、側部２、底部３からなる断面馬蹄形
のプレキヤストコンクリート製の斜管Ａと同様の
斜管Ｂとが、第２図に示すように角度θで接合さ
れた曲管を、管軸LA，LB方向を上下として製造
する型枠の場合を示したものである。
The present invention will be described below based on an illustrated embodiment. In this embodiment, as shown in FIG.
A curved pipe in which a diagonal pipe A made of precast concrete with a horseshoe-shaped cross section and a similar diagonal pipe B consisting of an arch part 1, side parts 2, and bottom part 3 are joined at an angle θ as shown in FIG. This figure shows the case of formwork manufactured with the axes L A and L B as the upper and lower directions.
型枠は、第３図ないし第５図に示すように、断
面形状がそれぞれ馬蹄形で、曲管の空胴部を形成
する内枠４と外形を形成する外枠５から構成され
ている。 As shown in FIGS. 3 to 5, the formwork has a horseshoe-shaped cross-section and is composed of an inner frame 4 forming the cavity of the curved pipe and an outer frame 5 forming the outer shape.
内枠は、上部斜管用内枠４Ａと下部斜管用内枠
４Ｂとからなり、これら４Ａ，４Ｂは接合端部に
おいて着脱自在に接続されている。 The inner frame consists of an inner frame 4A for an upper oblique pipe and an inner frame 4B for a lower oblique pipe, and these 4A and 4B are detachably connected at the joint end.
このような内枠４および外枠５は、第３図に示
すようにその下端に基台６が取付けられるととも
にこの基台６の一端部が水平支持台７の一端部に
軸着されて揺動自在とされ、角度θの揺動によ
り、上部斜管Ａの管軸LAが鉛直方向に沿う位置
と、下部斜管Ｂの管軸LBが鉛直方向に沿う位置
とを保持し得るようにされている。前者の位置
は、支持リンク８により位置決めされ、後者の位
置は、支持リンク８を取外し水平支持台７上に基
台６を載置することにより位置決めされる。 As shown in FIG. 3, a base 6 is attached to the lower ends of the inner frame 4 and outer frame 5, and one end of this base 6 is pivoted to one end of a horizontal support 7 for rocking. By swinging at an angle θ, the tube axis L A of the upper diagonal tube A can be maintained in the vertical direction, and the tube axis L B of the lower diagonal tube B can be maintained in the vertical direction. It is being done. The former position is determined by the support link 8, and the latter position is determined by removing the support link 8 and placing the base 6 on the horizontal support 7.
次に、内枠４および外枠５の断面形状を詳述す
る。 Next, the cross-sectional shapes of the inner frame 4 and the outer frame 5 will be described in detail.
内枠４Ａ，４Ｂは、アーチ部内型枠９と、一反
部がアーチ部内型枠９の端部に枢着され側部２か
ら底部３にかけて配設された略Ｌ字状の側部内型
枠１０と、この側部内型枠１０の他端部間に着脱
自在に嵌合された分離内型枠１１とから構成され
ている。 The inner frames 4A and 4B include an arch inner form 9 and a substantially L-shaped side inner form whose one side is pivoted to the end of the arch inner form 9 and is disposed from the side 2 to the bottom 3. 10, and a separate internal formwork 11 that is removably fitted between the other end portions of this side internal formwork 10.
分離内型枠１１は、両端部に傾斜係合面１２ａ
を有する案内レール１２が取付けられ、内側に向
つて広がる楔状に形成され、側部内型枠１０の他
端部には傾斜係合面１２ａに係合する傾斜係合面
１３ａを有する案内レール１３が取付けられてい
る。 The inner formwork 11 has inclined engagement surfaces 12a at both ends.
A guide rail 12 is attached to the guide rail 12, which is formed into a wedge shape that widens inward, and a guide rail 13 having an inclined engagement surface 13a that engages with the inclined engagement surface 12a is provided at the other end of the side inner formwork 10. installed.
外枠５は、アーチ部１および側部２を覆う二分
割された主外型枠１４，１５と、この主外型枠１
４の端部間に渡されて底部３を覆う副外型枠１６
とからなる。 The outer frame 5 includes two main outer forms 14 and 15 that cover the arch part 1 and the side parts 2, and this main outer form 1.
A secondary outer formwork 16 is passed between the ends of 4 and covers the bottom 3
It consists of.
第３図、第７図に示すように、基台６上には、
コンクリート管体の開口部周囲に係合突条を形成
する仕口部材１７が、空間部Ｓをおいて設置さ
れ、この仕口部材１７を挾むように下部斜管Ｂの
内型枠９，１０，１１と外型枠１４，１５，１６
とが配置される。内型枠９，１０，１１と外型枠
１４，１５，１６とは、内型枠下部に固着された
ナツト１８と外型枠側から空間部Ｓを貫通するボ
ルト１９とにより締結される。 As shown in FIGS. 3 and 7, on the base 6,
A joint member 17 forming an engaging protrusion around the opening of the concrete pipe body is installed with a space S therebetween, and the inner formworks 9, 10, 11 and outer formwork 14, 15, 16
and are placed. The inner forms 9, 10, 11 and the outer forms 14, 15, 16 are fastened together by nuts 18 fixed to the lower part of the inner form and bolts 19 passing through the space S from the outer form.
さらに、外型枠１４，１５，１６の上端部に
は、コンクリート管体の開口部周囲に係合溝を形
成する仕口部材２０が取付けられ、第３図、第４
図に示すように、型枠上部間は、着脱容易かつ幅
決め自在な締結部材２１により接続される。この
締結部材２１は、先端にナツト２２が螺合され、
かつ、基端が上部斜管Ａの内型枠９，１０，１１
の上面に軸着されて上下方向に揺動自在とされた
締結棒２３と、外枠１４，１５，１６の上面に取
付けられ、ナツト２２を係止し得る係止部材２４
とからなる。 Furthermore, a joint member 20 that forms an engagement groove around the opening of the concrete pipe is attached to the upper end of the outer formwork 14, 15, 16.
As shown in the figure, the upper parts of the formwork are connected by a fastening member 21 that can be easily attached and detached and whose width can be determined freely. This fastening member 21 has a nut 22 screwed onto its tip.
and the inner formworks 9, 10, 11 whose base end is the upper oblique pipe A
A fastening rod 23 is pivotally attached to the upper surface and is swingable in the vertical direction, and a locking member 24 is attached to the upper surface of the outer frames 14, 15, 16 and can lock the nut 22.
It consists of.
以上のような構成の型枠において、型枠の組立
ては、第３図に二点鎖線で示す状態から行なう。
まず、分離内型枠１１を取外した状態の下部斜管
用内枠４Ｂを内側に縮めた状態で基台６上に吊上
げて設置した後、内枠４Ｂを広げ分離内型枠１１
を吊込んで、側部内型枠１０の他端部にボルトあ
るいはテーパピンにより接続する。次いで、予め
組立てておいた上部斜管用内枠４Ａを下部斜管用
内枠４Ｂに接続し、鉄筋（図示省略）をセツトす
る。 In the formwork constructed as described above, the formwork is assembled from the state shown by the two-dot chain line in FIG.
First, the inner frame 4B for the lower inclined pipe with the separated inner form 11 removed is hoisted and installed on the base 6 in a state of being contracted inward, and then the inner frame 4B is expanded and the separated inner form 11
is suspended and connected to the other end of the side inner formwork 10 with bolts or taper pins. Next, the previously assembled inner frame 4A for the upper inclined pipe is connected to the inner frame 4B for the lower inclined pipe, and reinforcing bars (not shown) are set.
続いて、主外型枠１４，１５、副外型枠１６を
組付け、外枠５と上部斜管用内枠４Ａとを締結す
る。 Subsequently, the main outer formworks 14, 15 and the sub-outer formwork 16 are assembled, and the outer frame 5 and the upper oblique pipe inner frame 4A are fastened together.
このような型枠の組立てが終了したら、基台６
を角度θだけ揺動させて管軸LAが鉛直方向に沿
う位置に固定し、コンクリートの打設を行なう。 After completing the assembly of the formwork, the base 6
is swung by an angle θ and fixed at a position where the pipe axis L A is along the vertical direction, and concrete is poured.
脱型に際しては、コンクリート打設時の状態か
ら、外枠５と上部斜管用内枠４Ａとの接続を外
し、外枠５をコンクリート製品から取外す。続い
て、上部斜管用内枠４Ａの分離内型枠１１を取外
すとともに側部内型１０，１０を内側に移動さ
せ、内枠４Ａを吊上げてコンクリート製品から取
外す。 When demolding, the connection between the outer frame 5 and the inner frame 4A for the upper diagonal pipe is removed from the state at the time of concrete pouring, and the outer frame 5 is removed from the concrete product. Subsequently, the separation inner form 11 of the upper diagonal pipe inner frame 4A is removed, the side inner molds 10, 10 are moved inward, and the inner frame 4A is lifted and removed from the concrete product.
次いで、残つたコンクリート製品と下部斜管用
内枠４Ｂとを角度θだけ揺動させ、第３図に二点
鎖線で示す状態とする。このような状態から、内
枠４Ｂの分離内型枠１１を取外すとともに側部内
型枠１０，１０を内側に移動させて、コンクリー
ト製品を吊上げて内枠４Ｂから取外すことにな
る。 Next, the remaining concrete product and the inner frame 4B for the lower inclined pipe are swung by an angle θ to obtain the state shown by the two-dot chain line in FIG. From this state, the separated inner formwork 11 of the inner frame 4B is removed, the side inner formworks 10, 10 are moved inward, and the concrete product is lifted up and removed from the inner frame 4B.
なお、以上は標準形の馬蹄形プレキヤストコン
クリート製品について説明したが、第８図に示す
ような直載形の馬蹄形プレキヤストコンクリート
製品でも、外枠５の形状を変えるだけで容易に製
造し得る。さらに、その他の断面の曲管にも型枠
の形状を変えるだけで、本発明を有効に適用でき
ることはいうまでもでない。 Although a standard horseshoe-shaped precast concrete product has been described above, a direct-mounted horseshoe-shaped precast concrete product as shown in FIG. 8 can also be easily manufactured by simply changing the shape of the outer frame 5. Furthermore, it goes without saying that the present invention can be effectively applied to curved pipes with other cross sections by simply changing the shape of the formwork.
前述のとおり、この発明によれば、コンクリー
ト曲管を管軸方向を上下として製造するとともに
内枠を上部斜管用と下部斜管用に分離し、上部斜
管の管軸が鉛直方向に沿う位置と、下部斜管の管
軸が鉛直方向に沿う位置とに位置決めされるよう
にしたため、比較的簡単な構成で、脱型が極めて
容易となる。
As described above, according to the present invention, the concrete bent pipe is manufactured with the pipe axis direction as the top and bottom, and the inner frame is separated into the upper and lower inclined pipes, and the pipe axis of the upper inclined pipe is located at a position along the vertical direction. Since the tube axis of the lower oblique tube is positioned along the vertical direction, demolding is extremely easy with a relatively simple configuration.
第１図、第２図は、コンクリート曲管を示す横
断面図、正面図、第３図、第４図はこの発明に係
る型枠を示す部分破断図、部分破断平面図、第５
図は第３図の−線断面図、第６図は第３図の
−線断面図、第７図は型枠の仕口部を示す縦
断面図、第８図は曲管の他の例を示す横断面図で
ある。
Ａ……上部斜管、Ｂ……下部斜管、１……アー
チ部、２……側部、３……底部、４……内枠、５
……外枠、６……基台、７……水平支持台、８…
…支持リンク、９……アーチ部内型枠、１０……
側部内型枠、１１……分離内型枠、１２，１３…
…案内レール、１２ａ，１３ａ……傾斜係合面、
１４，１５……主外型枠、１６……副外型枠、１
７……仕口部材、１８……ナツト、１９……ボル
ト、２０……仕口部材、２１……締結部材、２２
……ナツト、２３……締結棒、２４……係止部
材。
1 and 2 are a cross-sectional view and a front view showing a concrete bent pipe, FIGS. 3 and 4 are a partially cutaway view and a partially cutaway plan view showing a formwork according to the present invention, and FIGS.
The figure is a sectional view taken along the - line in Fig. 3, Fig. 6 is a sectional view taken along the - line in Fig. 3, Fig. 7 is a longitudinal sectional view showing the joint part of the formwork, and Fig. 8 is another example of a curved pipe. FIG. A... Upper oblique pipe, B... Lower oblique pipe, 1... Arch part, 2... Side part, 3... Bottom, 4... Inner frame, 5
...Outer frame, 6...Base, 7...Horizontal support stand, 8...
...Support link, 9...Arch inner formwork, 10...
Side inner formwork, 11...Separated inner formwork, 12, 13...
...Guide rail, 12a, 13a... Inclined engagement surface,
14, 15...Main outer formwork, 16...Sub-outer formwork, 1
7... Connection member, 18... Nut, 19... Bolt, 20... Connection member, 21... Fastening member, 22
... Nut, 23 ... Fastening rod, 24 ... Locking member.
Claims (1)
角度θで接合されているコンクリート曲管を管軸
方向を上下として製造する型枠であつて、内枠
は、接合位置において着脱自在に接続された上部
斜管用内枠と下部斜管用内枠とからなり、これら
内枠と外枠とは、角度θだけ揺動して、前記上部
斜管の管軸が鉛直方向に沿う位置と、前記下部斜
管の管軸が鉛直方向に沿う位置とに位置決めされ
るように構成されていることを特徴とするコンク
リート曲管製造用型枠。 ２ コンクリート曲管は、アーチ部を有する断面
略馬蹄形のコンクリート管体であることを特徴と
する特許請求の範囲第１項記載のコンクリート曲
管製造用型枠。 ３ 上部斜管用内枠および下部斜管用内枠は、ア
ーチ部内型枠と、一端部が前記アーチ部内型枠の
端部に枢着され側部から底部にかけて配設された
略Ｌ字状の側部内型枠と、この側部内型枠の他端
部間に着脱自在に嵌合された分離内型枠とから構
成されていることを特徴とする特許請求の範囲第
２項記載のコンクリート曲管製造用型枠。[Scope of Claims] 1. A formwork for manufacturing a concrete curved pipe having an inner frame and an outer frame, in which an upper diagonal pipe and a lower diagonal pipe are joined at an angle θ, with the pipe axis direction being the upper and lower, The inner frame consists of an inner frame for an upper diagonal pipe and an inner frame for a lower diagonal pipe, which are detachably connected at the joint position. A formwork for manufacturing a concrete curved pipe, characterized in that the formwork is configured such that the pipe axis is positioned in a vertical direction, and the pipe axis of the lower oblique pipe is positioned in a vertical direction. 2. The formwork for manufacturing a concrete bent pipe according to claim 1, wherein the concrete bent pipe is a concrete pipe body having a substantially horseshoe-shaped cross section and having an arch portion. 3 The inner frame for the upper inclined pipe and the inner frame for the lower inclined pipe have an arch inner form and a substantially L-shaped side whose one end is pivoted to the end of the arch inner form and is arranged from the side to the bottom. The concrete bent pipe according to claim 2, characterized in that it is composed of an inner formwork and a separate inner formwork detachably fitted between the other end portions of the side inner formwork. Formwork for manufacturing.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58079672A JPS59204506A (en) | 1983-05-07 | 1983-05-07 | Formwork for manufacturing concrete bend |
| US06/606,208 US4614324A (en) | 1983-05-07 | 1984-05-02 | Mold for producing concrete pipe |
| GB08411465A GB2141966B (en) | 1983-05-07 | 1984-05-04 | Molds for producing concrete pipes |
| KR1019840002430A KR900005970B1 (en) | 1983-05-07 | 1984-05-04 | Moulds for producing concrete-tubular |
| KR1019900008567A KR900005971B1 (en) | 1983-05-07 | 1990-06-12 | Moulds for producing concrete-tubular |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58079672A JPS59204506A (en) | 1983-05-07 | 1983-05-07 | Formwork for manufacturing concrete bend |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59204506A JPS59204506A (en) | 1984-11-19 |
| JPH0326642B2 true JPH0326642B2 (en) | 1991-04-11 |
Family
ID=13696673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58079672A Granted JPS59204506A (en) | 1983-05-07 | 1983-05-07 | Formwork for manufacturing concrete bend |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59204506A (en) |
-
1983
- 1983-05-07 JP JP58079672A patent/JPS59204506A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59204506A (en) | 1984-11-19 |
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