JPH0626162A - Extrusion-molded stair tread and manufacture thereof - Google Patents
Extrusion-molded stair tread and manufacture thereofInfo
- Publication number
- JPH0626162A JPH0626162A JP4056350A JP5635092A JPH0626162A JP H0626162 A JPH0626162 A JP H0626162A JP 4056350 A JP4056350 A JP 4056350A JP 5635092 A JP5635092 A JP 5635092A JP H0626162 A JPH0626162 A JP H0626162A
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing pipe
- extrusion
- plate
- tread
- reinforcing
- 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.)
- Granted
Links
Landscapes
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、階段を構成する踏段
において、コンクリート製品を押出成形することにより
製造する押出成形踏段及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extrusion molding step which is manufactured by extruding a concrete product in a step forming a staircase, and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】従来、押出成形により、コンクリート製
品を形成する方法は種々提案され、例えば、長手方向に
貫通孔を形成すると共に金属線枠を埋設する筋金入りセ
メント製品の製造方法（特公昭５３−４７２６０号）が
あった。また、コンクリート製品内に鋼繊維を分散し形
成する、押出成形による鋼繊維補強建材の製造方法（特
開昭５１−１３７７１４号）、あるいはコンクリート製
品内に合成繊維を分散し形成する、押出成形によるセメ
ント成形品製造法（特開昭４９−４４０９９号）があっ
た。2. Description of the Related Art Conventionally, various methods for forming concrete products by extrusion molding have been proposed. For example, a method for producing a cement product containing a reinforced metal body in which a through hole is formed in the longitudinal direction and a metal wire frame is embedded (Japanese Patent Publication No. No. 47260). In addition, a method for manufacturing a steel fiber reinforced building material by extrusion molding in which steel fibers are dispersed and formed in a concrete product (JP-A-51-137714), or by extrusion molding in which synthetic fibers are dispersed and formed in a concrete product There was a method for producing a cement molded product (Japanese Patent Laid-Open No. 49-44099).
【０００３】[0003]
【発明が解決しようとする課題】前記従来の技術によ
り、階段用の踏段を形成した場合には、他に、ささら桁
と踏段とを固定する為の取付手段を踏段の外部に設けな
ければならず、製造工程が煩雑になると共に、取付手段
が階段の外面に露出するのでデザイン上階段の外観が見
苦しくなる問題点があった。In the case where the steps for stairs are formed by the above-mentioned conventional technique, other mounting means for fixing the sasara girder and the steps must be provided outside the steps. However, the manufacturing process is complicated, and the mounting means is exposed on the outer surface of the stairs, which makes the appearance of the stairs unsightly in terms of design.
【０００４】また、踏段形成後に、該踏段のささら桁取
付面に取付手段としてボルトやナットを埋設した場合に
は、外面には露出しないが踏段をささら桁に固定して階
段を形成した後に、この階段を吊り上げた際に、１つの
ボルトやナットに階段全体の荷重がかかるおそれもあ
り、強度が不足する問題点があった。When bolts and nuts are embedded as mounting means on the mounting surface of the step girder after the step is formed, the step is fixed to the step girder after the step is fixed to the sasara girder, although it is not exposed on the outer surface. When the stairs are hoisted, the load of the entire stairs may be applied to one bolt or nut, resulting in a problem of insufficient strength.
【０００５】[0005]
【課題を解決するための手段】然るにこの発明は、踏段
内の長手方向の全長に亘り、端部を取付部とする補強パ
イプを埋設したので、前記問題点を解決した。SUMMARY OF THE INVENTION However, the present invention solves the above problems because a reinforcing pipe having an end portion as a mounting portion is buried over the entire length of the step in the longitudinal direction.
【０００６】即ちこの発明は、平板状の踏板と該踏板の
一側より立上るけ込み板とを一体的に押出成形して踏段
本体を形成し、前記踏段本体内の適所に長手方向全長に
亘って、端部に取付部を有する補強パイプが埋設された
ことを特徴とする押出成形踏段である。また、補強パイ
プの端部内壁に螺糸を形成して取付部としたあるいは補
強パイプの端部内側に、内壁に螺糸を形成した筒を嵌挿
し固着して取付部とした押出成形踏段である。また、踏
段本体は長手方向に中空部を形成した押出成形踏段であ
る。That is, according to the present invention, a flat plate-shaped step plate and a streak plate rising from one side of the step plate are integrally extrusion-molded to form a step body, and the step body is formed at a proper position in the longitudinal entire length. The extrusion molding step is characterized in that a reinforcing pipe having an attachment portion is embedded in the end portion. In addition, an extrusion molding step in which a screw thread is formed on the inner wall of the end of the reinforcing pipe as a mounting portion, or a tube with a screw thread formed on the inner wall is inserted and fixed inside the end of the reinforcing pipe as the mounting portion. is there. The step body is an extrusion step having a hollow portion formed in the longitudinal direction.
【０００７】また、この発明は、平板状の踏板と該踏板
の一側より立上るけ込み板とを一体成形してなる側面形
状のノズルより、単位長さに切断してかつ端部に取付部
を形成した補強パイプを前記踏板内に埋設するように、
踏板材料を押し出し、単位長さに切断することを特徴と
した押出成形踏段の製造方法である。Further, according to the present invention, a flat-faced tread plate and a riser plate rising from one side of the tread plate are integrally molded, and are cut into unit lengths and attached to the end portions. To embed the reinforcing pipe with the part formed in the tread,
A method for manufacturing an extrusion-molded step, characterized by extruding a tread material and cutting it into unit lengths.
【０００８】更に、この発明は、平板状の踏板と該踏板
の一側より立上るけ込み板とを一体成形してなる側面形
状のノズルより、前記踏板の長手方向の全長に亘る補強
パイプを埋設するように、踏段材料を押し出し、単位長
さに切断し踏段本体を形成し、前記踏段本体の前記補強
パイプの端部に取付部を形成することを特徴とした押出
成形踏段の製造方法である。Further, according to the present invention, a reinforcing pipe extending over the entire length in the longitudinal direction of the tread is provided by a side-surface nozzle formed by integrally molding a flat tread and a streak plate rising from one side of the tread. In a method for manufacturing an extrusion-molded step, which is characterized in that the step material is extruded so as to be embedded, the step body is formed by cutting the step material into unit lengths, and the mounting portion is formed at the end of the reinforcing pipe of the step body. is there.
【０００９】前記における踏段材料は堅練りしたコンク
リートであり、通常の普通コンクリートあるいは軽量コ
ンクリート等を使用することができる。また、コンクリ
ート内に無機糸繊維あるいは有機糸繊維を分散混入した
ファイバーコンクリートとすることもできる。更に、コ
ンクリート内に、金網その他の補強材料を埋設すること
もできる。The step material in the above is concrete which is hardened, and ordinary ordinary concrete or lightweight concrete can be used. Further, fiber concrete in which inorganic fiber fibers or organic fiber fibers are dispersed and mixed in concrete can also be used. Further, it is possible to embed a wire mesh or other reinforcing material in the concrete.
【００１０】また、前記における単位長さとは、踏段本
体１個の長手方向の長さである。The unit length in the above is the length of one step body in the longitudinal direction.
【００１１】また、前記における取付部は、踏段をささ
ら桁に取り付ける為の手段である。The above-mentioned mounting portion is means for mounting the steps on the sasara girder.
【００１２】また、前記における補強パイプは、断面形
状は丸に限らず自由である。また、外面に凹凸を形成し
た異形パイプを用いることもできる。The reinforcing pipe described above is not limited to a circular cross section, but may be any shape. It is also possible to use a deformed pipe having irregularities formed on the outer surface.
【００１３】前記においてコンクリート材料は、各種セ
メント、珪酸カルシウム、樹脂、可塑性付与材、骨材、
繊維材及び水を、目的に応じて適宜選択して材料を構成
する。In the above, concrete materials include various cements, calcium silicates, resins, plasticizers, aggregates,
The fiber material and water are appropriately selected according to the purpose to constitute the material.
【００１４】[0014]
【作用】この発明の踏段は、踏段の全長に亘った長さの
補強パイプを埋設したので、補強パイプ端部に取付部を
形成できるので、踏段が十分な強度を有し、かつささら
桁に取付けが容易にできる。また、ささら桁との取付部
は外面に露出しない。In the step according to the present invention, since the reinforcing pipe having a length extending over the entire length of the step is buried, the mounting portion can be formed at the end of the reinforcing pipe, so that the step has sufficient strength and is smooth. Easy to install. Also, the mounting part with the sasara girder is not exposed on the outer surface.
【００１５】また、この発明の方法によれば、補強パイ
プを埋設しながら踏段材料を押出し踏段本体を形成し、
補強パイプに取付部を加工したので、少ない工程で取付
部が一体となった踏段を形成できる。According to the method of the present invention, the step material is extruded while the reinforcing pipe is embedded to form the step main body,
Since the mounting part is processed on the reinforcing pipe, it is possible to form a step in which the mounting part is integrated with a small number of steps.
【００１６】[0016]
【実施例１】図１乃至図４、図８及び図９に基づきこの
発明の実施例を説明する。[Embodiment 1] An embodiment of the present invention will be described with reference to FIGS. 1 to 4, 8 and 9.
【００１７】平板状の踏板１と該踏板１の一側より立ち
上がるけ込み板２とを、コンクリート材料から一体的に
押し出し成形して踏段本体３を形成する。前記踏段本体
３は長手方向の全長に亘って中空部４、４を形成すると
共に、前記踏板１部分の長手方向全長に亘って補強パイ
プ５、５を埋設する。前記補強パイプ５の両端部（各端
部は踏板の側面に位置する）６、６は内壁に螺糸を形成
してある（図３）。以上のようにして、押出し成形踏段
７を形成する。A step body 3 is formed by integrally extruding a flat tread plate 1 and a riser plate 2 rising from one side of the tread plate 1 from a concrete material. The step body 3 forms hollow portions 4 and 4 over the entire length in the longitudinal direction, and reinforced pipes 5 and 5 are embedded along the entire length in the longitudinal direction of the step plate 1. Both ends (each end is located on the side surface of the tread) 6, 6 of the reinforcing pipe 5 have threads formed on the inner wall (FIG. 3). The extrusion molding step 7 is formed as described above.
【００１８】次に、前記踏段７を用いて階段を形成する
際には、踏段７、７を、踏板１の下面と隣接踏段のけ込
み板２の上面が当接するように、かつささら桁８の透孔
９と補強パイプ５の端部６が連通するように、ささら桁
８に沿って所定数並べる（図８、図９）。次に、ささら
桁８と踏段７の当接面にウレタンシール１０を介装する
と共に、ささら桁８外側からボルト１１、１１を挿通
し、補強パイプ５の端部６内に螺合し（図１）、ささら
桁８と踏段７、７とを締め付け固定する。また、踊り場
部分には、前記踏段７からけ込み板２部分を削除した形
状（踏板１のみから構成する形状）踊り場用の踏段１
２、１３を使用し、踏段１２の補強パイプ１２ａに同様
にウレタンシールを介装してボルトを螺合してささら桁
８に固定する。以上のようにして、ささら桁８に所定の
すべての踏段を固定し、階段１５を形成する（図８、図
９）。Next, when forming the stairs using the steps 7, the steps 7 and 7 are arranged so that the lower surface of the step plate 1 and the upper surface of the instep plate 2 of the adjacent step contact each other. A predetermined number are arranged along the sasara girder 8 so that the through hole 9 and the end 6 of the reinforcing pipe 5 communicate with each other (FIGS. 8 and 9). Next, a urethane seal 10 is interposed between the contact surfaces of the sasara girder 8 and the step 7, and bolts 11 and 11 are inserted from the outside of the sasara girder 8 and screwed into the end portion 6 of the reinforcing pipe 5 (Fig. 1) Tighten and fix the sasara girder 8 and steps 7, 7. In the landing part, a step 1 for the landing is a shape in which the sliding plate 2 is removed from the step 7 (a shape composed of only the step 1).
Similarly, the urethane pipes 2 and 13 are provided on the reinforcing pipe 12a of the step 12, and the urethane seal is interposed therebetween. As described above, all predetermined steps are fixed to the sasara girder 8 to form the stairs 15 (FIGS. 8 and 9).
【００１９】前記において、図中１６は支柱、１７は踊
り場用の梁である。また、前記において、コンクリート
材料は、ビニロンなどの有機糸繊維を体積の０．５〜
２．５量程度分散混入させて構成してある。In the above description, in the figure, 16 is a column and 17 is a beam for landing. In addition, in the above, the concrete material includes organic yarn fibers such as vinylon having a volume of 0.5 to
About 2.5 amount is dispersed and mixed.
【００２０】前記実施例において、中空部４は踏段７の
重量を減少し、材料を節約する為に、踏段７の強度を損
なわない程度設けるが、長手方向全長に亘って設けた
が、長手方向であれば断面積を変化させて、中空部を形
成することもできる。あるいは、中空部４は不要とする
こともできる。In the above embodiment, the hollow portion 4 is provided to the extent that the strength of the step 7 is not impaired in order to reduce the weight of the step 7 and save the material, but it is provided over the entire length in the longitudinal direction. If so, the cross-sectional area can be changed to form the hollow portion. Alternatively, the hollow portion 4 can be omitted.
【００２１】また、前記実施例において、コンクリート
材料は合成樹脂繊維を分散混入したが、繊維状の金属細
線とすることもできる。あるいは補強用の繊維材は混入
せず、踏段を構成する通常の軽量コンクリートその他の
コンクリート材料でも可能である。更に、コンクリート
材料は各種セメント、珪酸カルシウム、樹脂、可塑性付
与材、骨材、繊維材及び水を、目的に応じて適宜選択し
て材料を構成することもできる。Further, in the above-mentioned embodiment, the concrete material has the synthetic resin fibers dispersed and mixed therein, but it is also possible to use fibrous thin metal wires. Alternatively, it is also possible to use ordinary lightweight concrete or other concrete material that constitutes the steps without mixing the reinforcing fiber material. Further, as the concrete material, various cements, calcium silicates, resins, plasticizers, aggregates, fibrous materials and water can be appropriately selected according to the purpose to constitute the material.
【００２２】また、前記実施例において、中空部内に水
の混入を防止する防水材、あるいは緩衝材としてウレタ
ンシールを設けたが、同様の作用を有する他の材料を用
いることもできる。Further, in the above-mentioned embodiment, the waterproof material for preventing the entry of water in the hollow portion or the urethane seal as the cushioning material is provided, but other materials having the same action can be used.
【００２３】また、前記実施例において、踏板１の下面
と隣接踏段のけ込み板２の上面が対応するように、踏段
７を配置したが、踏段７を前記実施例とは上下逆に配置
し、踏板１の上面にけ込み板２の下面が対応するように
配置し、ささら板に固定することもできる（図示してい
ない）。Further, in the above-mentioned embodiment, the step 7 is arranged so that the lower surface of the step board 1 and the upper surface of the instep plate 2 of the adjacent step correspond to each other. However, the step 7 is arranged upside down in the above-mentioned embodiment. It is also possible to arrange the upper surface of the tread plate 1 so as to correspond to the lower surface of the shingle plate 2 and fix it to the surface plate (not shown).
【００２４】また、前記実施例において、補強パイプ５
は２本設けたが、３本以上用いることもできる。また、
前記補強パイプ５は通常の丸パイプを使用したが外面に
凹凸加工をした異形パイプを用い、付着力を高めること
もできる（図示していない）。Further, in the above embodiment, the reinforcing pipe 5
Although two are provided, three or more can be used. Also,
As the reinforcing pipe 5, an ordinary round pipe is used, but a deformed pipe having an irregular surface on the outer surface may be used to increase the adhesive force (not shown).
【００２５】また、前記実施例において、前記補強パイ
プ５の端部６は内壁に螺糸を形成したが、図４に示すよ
うに、補強パイプ５の端部６内に、内壁に螺糸１８を形
成した筒材１９を嵌挿し接着剤２０で固着することもで
きる（図４（ａ）（ｂ））。また、この際に、補強パイ
プ内面と筒材１９外面に夫々嵌合部を設けて互いに嵌合
させることもできる（図示していない）。また、前記筒
材１９は長ナットの外壁面を筒状に形成して、構成する
こともできる。Further, in the above embodiment, the end portion 6 of the reinforcing pipe 5 is formed with a thread on the inner wall. However, as shown in FIG. 4, the end portion 6 of the reinforcing pipe 5 has a thread 18 on the inner wall. It is also possible to insert the tubular member 19 in which is formed and fix it with the adhesive 20 (FIGS. 4A and 4B). Further, at this time, fitting portions may be provided on the inner surface of the reinforcing pipe and the outer surface of the tubular member 19 so as to be fitted to each other (not shown). Further, the tubular member 19 may be formed by forming the outer wall surface of the long nut into a tubular shape.
【００２６】更に、前記実施例において、前記補強パイ
プ５、５の中間部に、端部に取付部加工をしない補強パ
イプ５ａを埋設して、押出し成形踏段７ａを形成するこ
ともできる（図２）。前記補強パイプ５ａは押出し成形
踏段７ａの補強の為に埋設し、ささら桁との取付に際し
ては使用しない。また、前記補強パイプ５ａは１本用い
たが２本以上もうけることも可能である。また、前記補
強パイプ５ａに替り、補強鉄筋、補強金網等を用いるこ
ともできる（図示していない）。Further, in the above-mentioned embodiment, the extruded step 7a can be formed by embedding the reinforcing pipe 5a which is not attached to the end portion in the middle portion of the reinforcing pipes 5 and 5 (FIG. 2). ). The reinforcing pipe 5a is embedded to reinforce the extrusion molding step 7a, and is not used when it is attached to the sasara girder. Although one reinforcing pipe 5a is used, two or more reinforcing pipes can be provided. Further, instead of the reinforcing pipe 5a, a reinforcing reinforcing bar, a reinforcing wire mesh or the like can be used (not shown).
【００２７】[0027]
【実施例２】図５及び図６に基づきこの発明の製造方法
を説明する。Second Embodiment A manufacturing method of the present invention will be described with reference to FIGS.
【００２８】踏段７用の所定のコンクリート材料を材料
練り混ぜ装置２１で混合したのち押出成形装置２３に送
る。前記押出成形装置２３は該先端に、形成される踏段
７（踏板１と該踏板１の一側より立ち上がるけ込み板２
とが一体形成された形状）の側面形状と同一形状のノズ
ル２５を有する。また、踏段７の定尺に合わせて単位長
さに切断してかつ該端部７、７の内側壁面に螺糸加工を
施した補強パイプ５をパイプ供給装置２４に供給する。
前記補強パイプ５、５の端部７、７には、パイプ内にコ
ンクリート材料が浸入しないように栓２６が取り付けて
ある。前記栓２６は、前記補強パイプ５の端部７の縁か
ら該栓２６の表面が外側に突出しないように、取り付け
てある。A predetermined concrete material for the step 7 is mixed by the material kneading device 21 and then sent to the extrusion molding device 23. The extrusion molding device 23 has a step 7 formed at the tip thereof (the step plate 1 and the riser plate 2 rising from one side of the step plate 1).
And a nozzle 25 having the same shape as the side surface shape of (integrated shape). Further, the reinforcing pipe 5 which is cut into unit lengths according to the standard length of the steps 7 and whose inner wall surfaces of the end portions 7, 7 are threaded is supplied to the pipe supply device 24.
Plugs 26 are attached to the ends 7, 7 of the reinforcing pipes 5, 5 so that concrete material does not enter the pipes. The plug 26 is attached so that the surface of the plug 26 does not project outward from the edge of the end 7 of the reinforcing pipe 5.
【００２９】次に、前記押出し成形装置２３の前記ノズ
ル２５からコンクリート材料を矢示３２方向に押出すと
共に、同時に前記ノズル２５の適所から前記補強パイプ
５、５を矢示３３方向に、前記コンクリート材料内に埋
設するように押出す。この際、ノズル２５からは所定の
踏段７が長手方向に連続した形状の踏段材が押し出さ
れ、次に押し出されたまだ固まらない踏段材を一次切断
機２７で前記補強パイプ５、５の切れ目３７、３７毎に
単位長さよりやや長い長さ毎に切断する（図６
（ａ））。前記一次切断機２７による切断はウォーター
ジェット、回転歯、帯歯などによる。Next, the concrete material is extruded from the nozzle 25 of the extrusion molding device 23 in the direction of the arrow 32, and at the same time, the reinforcing pipes 5 and 5 are moved from the proper position of the nozzle 25 in the direction of the arrow 33 to the concrete. Extrude to be embedded in the material. At this time, a step material having a shape in which a predetermined step 7 is continuous in the longitudinal direction is extruded from the nozzle 25, and the step material that is not yet solidified is extruded by the primary cutting machine 27 with the cut 37 of the reinforcing pipes 5, 5. , 37, and cut at a length slightly longer than the unit length (Fig. 6).
(A)). The cutting by the primary cutting machine 27 is performed by a water jet, rotary teeth, band teeth, or the like.
【００３０】次にトラバーサー２８を作動させ、矢示３
４方向に移動し、前記切断した踏段材を促進養生室２９
内に収容し、所定の条件下で蒸気養生し、固化させる。
次に、トラバーサー２８ａを作動させ、固化した踏段材
を矢示３５方向に移動させ、二次切断機３０に送る。二
次切断機３０では、固化した踏段材の両端部を、前記補
強パイプ５の端縁に沿って（切断箇所３８、３８で）、
単位長さに切断する（図６（ｂ））。前記二次切断機３
０による切断はダイヤモンドソーによる。次に単位長さ
に切断した踏段材を矢示３６方向に移動させると共に、
前記補強パイプ５の端部から前記栓２６、２６を取り外
し、踏段７を形成する（図６（ｃ））。図５中３１は取
付部加工装置である。前記におけるパイプ供給装置２４
に供給した補強パイプ５は予め端部６へ取付部加工を施
したが、この取付部加工は図５の取付部加工装置３１を
使用することもできる。また、前記におけるコンクリー
ト材料は実施例１と同一の構成である。Next, the traverser 28 is operated and the arrow 3
Move in four directions and promote the cut step material into the curing room 29
It is housed inside and steam-cured and solidified under specified conditions.
Next, the traverser 28 a is operated to move the solidified step material in the direction of the arrow 35 and send it to the secondary cutting machine 30. In the secondary cutting machine 30, the both ends of the solidified step material are arranged along the edge of the reinforcing pipe 5 (at the cutting points 38, 38).
It cut | disconnects in unit length (FIG.6 (b)). The secondary cutting machine 3
Cutting with 0 is with a diamond saw. Next, while moving the step material cut in unit length in the direction of arrow 36,
The stoppers 26, 26 are removed from the end of the reinforcing pipe 5 to form the step 7 (FIG. 6 (c)). Reference numeral 31 in FIG. 5 denotes a mounting portion processing device. Pipe supply device 24 in the above
Although the reinforcing pipe 5 supplied to the above has the mounting portion processed in advance on the end portion 6, the mounting portion processing device 31 of FIG. 5 can be used for this mounting portion processing. Further, the concrete material in the above has the same configuration as that of the first embodiment.
【００３１】前記により製造した踏段７は、実施例１と
同様に、図８及び図９のように、ささら桁８に固定して
使用する。The step 7 manufactured as described above is used by being fixed to the sasara girder 8 as shown in FIGS. 8 and 9 as in the first embodiment.
【００３２】前記実施例において、補強パイプ５の端部
７に螺糸加工を施したが、端部７内に、内壁に螺糸１８
を形成した筒材（長ナットの外面を筒状に形成しても良
い）１９を嵌挿し接着固定することもできる。In the above embodiment, the end portion 7 of the reinforcing pipe 5 is threaded, but inside the end portion 7, the thread 18 is provided on the inner wall.
It is also possible to insert and insert a tubular member (where the outer surface of the long nut may be formed into a tubular shape) 19 in which the above is formed and adhere and fix.
【００３３】[0033]
【実施例３】図５及び図７に基づきこの発明の製造方法
を説明する。Third Embodiment A manufacturing method of the present invention will be described with reference to FIGS.
【００３４】所定のコンクリート材料を材料練り混ぜ装
置２１を経て、先端にノズル２５を有する押出成形装置
２３に送る。また、踏段７の定尺（単位長さ）を２個〜
５個程度連続した長さを有する所定長さ（この実施例で
は単位長さを３個連続した長さ）の補強パイプ５をパイ
プ供給装置２４に供給する。A predetermined concrete material is sent to an extrusion molding device 23 having a nozzle 25 at the tip through a material mixing device 21. In addition, the standard length (unit length) of the step 7 is two or more.
A reinforcing pipe 5 having a predetermined length (in this embodiment, three unit lengths in a row) having a continuous length of about 5 pipes is supplied to the pipe supply device 24.
【００３５】次に、前記押出し成形装置２３の前記ノズ
ル２５からコンクリート材料を矢示３２方向に押出すと
共に、同時に前記ノズル２５の適所から前記補強パイプ
５、５を矢示３３方向に前記コンクリート材料内に埋設
するように押出す。この際、ノズル２５からは所定の踏
段７が長手方向に連続した形状の踏段材が押し出され、
次に押し出されたまだ固まらない踏段材を一次切断機２
７で前記補強パイプ５、５の切れ目３９、３９毎に切断
する（図７（ａ））。前記一次切断機２７による切断は
ウォータージェット、回転歯、帯歯などによる。Next, concrete material is extruded from the nozzle 25 of the extrusion molding device 23 in the direction of arrow 32, and at the same time, the reinforcing pipes 5 and 5 are extruded from the proper positions of the nozzle 25 in the direction of arrow 33. Extrude so that it is embedded inside. At this time, a step material having a predetermined step 7 continuous in the longitudinal direction is extruded from the nozzle 25,
Next, the primary cutting machine 2 for the extruded step material that has not solidified yet
At 7, the cuts 39, 39 of the reinforcing pipes 5, 5 are cut (FIG. 7A). The cutting by the primary cutting machine 27 is performed by a water jet, rotary teeth, band teeth, or the like.
【００３６】次にトラバーサー２８を作動させ、前記切
断した踏段材を矢示３４方向に移動させ、促進養生室２
９内に収容し、所定の条件下で蒸気養生し、固化させ
る。次に、トラバーサー２８ａを作動させ、矢示３５方
向に、固化した踏段材を二次切断機３０に送る。二次切
断機３０では、固化した踏段材を、切断箇所４０、４０
で、単位長さに切断する（図７（ｂ））。前記二次切断
機３０による切断はダイヤモンドソーによる。次に単位
長さに切断した踏段材（踏段本体）を矢示３６方向に移
動させ、取付部加工装置３１に送る。取付部加工装置３
１では前記補強パイプ５の端部６の内壁面に螺糸加工
し、踏段７を形成する（図７（ｃ））。また、前記にお
けるコンクリート材料は実施例１と同一の構成である。Next, the traverser 28 is operated to move the cut step material in the direction of the arrow 34, and the accelerated curing chamber 2
It is housed in 9 and steam-cured and solidified under predetermined conditions. Next, the traverser 28a is operated to send the solidified step material to the secondary cutting machine 30 in the direction of the arrow 35. In the secondary cutting machine 30, the solidified step material is cut at the cutting points 40, 40.
Then, it is cut into a unit length (FIG. 7B). The cutting by the secondary cutting machine 30 is performed by a diamond saw. Next, the step material (step main body) cut into unit lengths is moved in the direction of the arrow 36 and sent to the attachment portion processing device 31. Attachment processing device 3
In step 1, the inner wall surface of the end portion 6 of the reinforcing pipe 5 is threaded to form a step 7 (FIG. 7C). Further, the concrete material in the above has the same configuration as that of the first embodiment.
【００３７】前記により製造した踏段７は、実施例１と
同様に、図８及び図９ように、ささら桁８に固定して使
用する。The step 7 manufactured as described above is used by being fixed to the sasara girder 8 as shown in FIGS. 8 and 9 as in the first embodiment.
【００３８】前記実施例において、取付部加工装置３１
では補強パイプ５の端部６に螺糸加工を施したが、実施
例１と同様に、端部６内に、内壁に螺糸１８を形成した
筒材（長ナットの外面を筒状に形成しても良い）１９を
嵌挿し接着固定することもできる。In the above-mentioned embodiment, the mounting portion processing device 31
In the above, the end portion 6 of the reinforcing pipe 5 is threaded. However, as in the first embodiment, the end member 6 is provided with the thread 18 on the inner wall thereof (the outer surface of the long nut is formed into a tubular shape). It is also possible to insert and fix 19).
【００３９】[0039]
【発明の効果】この発明は、補強パイプを埋設し、押出
し成形により踏段を形成したので、補強パイプ内に中空
部を形成できるので、耐力を弱めることなく踏段を軽量
化できる効果がある。また、補強パイプで踏段の補強と
取付部形成とが共にできるので使用部材を減少すること
ができ、押出し成形としたことと合わせ、製造工程を簡
略化できると共に、多量生産が容易となる効果がある。
更に、ささら桁との取付部はボルトの頭部以外外面に露
出しないので、外観デザインに制約を与えない効果があ
る。According to the present invention, since a step is formed by embedding a reinforcing pipe and extruding, a hollow portion can be formed in the reinforcing pipe, so that there is an effect that the step can be reduced in weight without weakening the yield strength. Further, since the step can be reinforced and the mounting portion can be formed with the reinforcing pipe, the number of used members can be reduced, and in addition to the extrusion molding, the manufacturing process can be simplified and mass production is facilitated. is there.
Further, since the mounting portion with the sasara girder is not exposed to the outer surface except the head portion of the bolt, there is an effect that the external design is not restricted.
【図１】この発明の実施例の踏段で、（ａ）は一部を破
切し一部を省略した平面図、（ｂ）は側面図である。FIG. 1 is a step view of an embodiment of the present invention, (a) is a plan view in which a part is cut away and part is omitted, and (b) is a side view.
【図２】この発明の他の実施例の踏段で、（ａ）は一部
を破切し一部を省略した平面図、（ｂ）は側面図であ
る。FIG. 2 is a step view of another embodiment of the present invention, (a) is a plan view with a part cut away and part is omitted, and (b) is a side view.
【図３】この発明の実施例の踏段の取付部の拡大断面図
である。FIG. 3 is an enlarged sectional view of a mounting portion of a step according to an embodiment of the present invention.
【図４】同じく他の取付部の拡大断面図である。FIG. 4 is an enlarged cross-sectional view of another mounting portion of the same.
【図５】この発明の方法に用いる製造装置の配置を示す
平面図である。FIG. 5 is a plan view showing an arrangement of manufacturing apparatuses used in the method of the present invention.
【図６】（ａ）（ｂ）（ｃ）はこの発明の製造方法を示
す踏段材の平面図である。6 (a), (b) and (c) are plan views of a step material showing a manufacturing method of the present invention.
【図７】（ａ）（ｂ）（ｃ）はこの発明の他の製造方法
を示す踏段材の平面図である。7 (a), (b) and (c) are plan views of a step material showing another manufacturing method of the present invention.
【図８】この発明の実施例の踏段を用いて形成した階段
の縦断面図である。FIG. 8 is a vertical cross-sectional view of stairs formed using the steps of the embodiment of the present invention.
【図９】同じく平面図である。FIG. 9 is a plan view of the same.
１ 踏板 ２ け込み板 ３ 踏段本体 ４ 中空部 ５、５ａ 補強パイプ ６ 端部（補強パイプ） ７、７ａ 踏段 ８ ささら桁 １８ 螺糸 １９ 筒材 ２３ 押出成形装置 ２４ パイプ供給装置 ２５ ノズル ２７ 一次切断機 ２９ 促進養生室 ３０ 二次切断機 ３１ 取付部加工装置 1 Stepping plate 2 Indentation plate 3 Step body 4 Hollow part 5, 5a Reinforcing pipe 6 End part (reinforcing pipe) 7, 7a Step 8 Sasara girder 18 Screw thread 19 Tubular material 23 Extrusion molding device 24 Pipe supply device 25 Nozzle 27 Primary cutting Machine 29 Acceleration Curing Room 30 Secondary Cutting Machine 31 Attachment Processing Machine
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成５年４月２６日[Submission date] April 26, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２５[Name of item to be corrected] 0025
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２５】また、前記実施例において、前記補強パイ
プ５の端部６は内壁に螺糸を形成したが、図４に示すよ
うに、補強パイプ５の端部６内に、内壁に螺糸１８を形
成した筒材１９を嵌挿し接着剤２０で固着することもで
きる（図４（ａ）（ｂ））。また、この際に、補強パイ
プ内面と筒材１９外面に夫々嵌合部を設けて互いに嵌合
させることもできる（図示していない）。また、前記筒
材１９は長ナットの外壁面を筒状に形成して、構成する
こともできる。また、内壁に螺糸１８を形成した筒材１
９、１９を鉄筋の両端部に連結固定して補強パイプ５と
することもできる（図示していない）。 Further, in the above embodiment, the end portion 6 of the reinforcing pipe 5 is formed with a thread on the inner wall. However, as shown in FIG. 4, the end portion 6 of the reinforcing pipe 5 has a thread 18 on the inner wall. It is also possible to insert the tubular member 19 in which is formed and fix it with the adhesive 20 (FIGS. 4A and 4B). Further, at this time, fitting portions may be provided on the inner surface of the reinforcing pipe and the outer surface of the tubular member 19 so as to be fitted to each other (not shown). Further, the tubular member 19 may be formed by forming the outer wall surface of the long nut into a tubular shape. In addition, the tubular member 1 having the thread 18 formed on the inner wall thereof
9 and 19 are connected and fixed to both ends of the reinforcing bar to form a reinforcing pipe 5.
It is also possible (not shown).
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００３２[Name of item to be corrected] 0032
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００３２】前記実施例において、補強パイプ５の端部
７に螺糸加工を施したが、端部７内に、内壁に螺糸１８
を形成した筒材（長ナットの外面を筒状に形成しても良
い）１９を嵌挿し接着固定することもできる。また、補
強パイプ５は、実施例１と同様に、螺糸１８を形成した
筒材１９、１９を鉄筋の両端部に連結固定した構成とす
ることもできる。 In the above embodiment, the end portion 7 of the reinforcing pipe 5 is threaded, but inside the end portion 7, the thread 18 is provided on the inner wall.
It is also possible to insert and insert a tubular member (where the outer surface of the long nut may be formed into a tubular shape) 19 in which the above is formed and adhere and fix. In addition,
The strong pipe 5 is formed with the thread 18 as in the first embodiment.
The tubular members 19, 19 are connected and fixed to both ends of the reinforcing bar.
You can also do it.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００３８[Correction target item name] 0038
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００３８】前記実施例において、取付部加工装置３１
では補強パイプ５の端部６に螺糸加工を施したが、実施
例１と同様に、端部６内に、内壁に螺糸１８を形成した
筒材（長ナットの外面を筒状に形成しても良い）１９を
嵌挿し接着固定することもできる。また、補強パイプ５
は、実施例１と同様に、螺糸１８を形成した筒材１９、
１９を鉄筋の両端部に連結固定した構成とすることもで
きる。 In the above-mentioned embodiment, the mounting portion processing device 31
In the above, the end portion 6 of the reinforcing pipe 5 is threaded. However, as in the first embodiment, the end member 6 is provided with the thread 18 on the inner wall thereof (the outer surface of the long nut is formed into a tubular shape). It is also possible to insert and fix 19). Also, the reinforcing pipe 5
Is the tubular member 19 in which the thread 18 is formed, as in the first embodiment.
19 can be connected and fixed to both ends of the reinforcing bar.
Wear.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 武井 吉一 東京都調布市飛田給二丁目19番１号 鹿島 建設株式会社技術研究所内 (72)発明者 末永 龍夫 東京都調布市飛田給二丁目19番１号 鹿島 建設株式会社技術研究所内 (72)発明者 里山 公治 東京都調布市飛田給二丁目19番１号 鹿島 建設株式会社技術研究所内 (72)発明者 西野 徹 大阪府寝屋川市下木田町14−５ 倉敷紡績 株式会社技術研究所内 (72)発明者 松本 浩 大阪府寝屋川市下木田町14−５ 倉敷紡績 株式会社技術研究所内 (72)発明者 松岡 正之 群馬県佐波郡境町大字東新井1048−１ 倉 敷紡績株式会社群馬工場内 ─────────────────────────────────────────────────── ─── Continued front page (72) Yoshikazu Takei, Yoshikazu Takei, 2-1-1, Tobita, Chofu-shi, Tokyo Inside Kashima Construction Co., Ltd. (72) Inventor, Tatsuo Suenaga 2-1-1, Tobita, Chofu, Tokyo No. 19 Kashima Construction Co., Ltd. Technical Research Institute (72) Inventor Koji Satoyama 2-19-1 Tobita, Chofu City, Tokyo Kashima Construction Co., Ltd. Technical Research Center (72) Inventor Toru Nishino 14-5 Shimokita Town, Neyagawa City, Osaka Prefecture Kurashiki Spinning Co., Ltd. Technical Research Institute (72) Inventor Hiroshi Matsumoto 14-5 Shimokita Town, Neyagawa City, Osaka Prefecture Kurashiki Spinning Co., Ltd. Technical Research Institute (72) Inventor Masayuki Matsuoka 1048-1 Higashiarai, Sakai-gun, Gunma Prefecture Kurashiki Spinning Co., Ltd. Gunma Factory
Claims (6)
け込み板とを一体的に押出成形して踏段本体を形成し、
前記踏段本体内の適所に長手方向全長に亘って、端部に
取付部を有する補強パイプが埋設されたことを特徴とす
る押出成形踏段。1. A step body is formed by integrally extruding a flat tread plate and a riser plate rising from one side of the tread plate,
An extrusion-molded step, wherein a reinforcing pipe having an attachment portion at its end is embedded in an appropriate position in the step body over the entire length in the longitudinal direction.
取付部とした請求項１記載の押出成形踏段。2. The extrusion-molded step according to claim 1, wherein a thread is formed on the inner wall of the end portion of the reinforcing pipe to form the mounting portion.
形成した筒を嵌挿し固着して取付部とした請求項１に記
載の押出成形踏段。3. The extrusion molding step according to claim 1, wherein a tube having a thread formed on the inner wall is fitted and fixed inside the end portion of the reinforcing pipe to form a mounting portion.
請求項１に記載の押出成形踏段。4. The extrusion-molded step according to claim 1, wherein the step body has a hollow portion formed in the longitudinal direction.
け込み板とを一体成形してなる側面形状のノズルより、
単位長さに切断してかつ端部に取付部を形成した補強パ
イプを前記踏板内に埋設するように、踏板材料を押し出
し、単位長さに切断することを特徴とした押出成形踏段
の製造方法。5. A nozzle having a side surface shape formed by integrally molding a flat tread plate and a riser plate rising from one side of the tread plate,
A method for manufacturing an extrusion-molded step, characterized in that a tread material is extruded and cut into a unit length so that a reinforcing pipe cut into a unit length and having an attachment portion formed at an end is embedded in the tread. .
け込み板とを一体成形してなる側面形状のノズルより、
前記踏板の長手方向の全長に亘る補強パイプを埋設する
ように、踏段材料を押し出し、単位長さに切断し踏段本
体を形成し、前記踏段本体の前記補強パイプの端部に取
付部を形成することを特徴とした押出成形踏段の製造方
法。6. A nozzle having a side surface shape formed by integrally molding a flat tread plate and a riser plate rising from one side of the tread plate,
The step material is extruded so as to embed the reinforcing pipe over the entire length of the step plate in the longitudinal direction, cut into unit lengths to form the step body, and the mounting portion is formed at the end of the reinforcing pipe of the step body. A method for manufacturing an extrusion molding step, which is characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04056350A JP3074503B2 (en) | 1992-02-06 | 1992-02-06 | Extruded steps and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04056350A JP3074503B2 (en) | 1992-02-06 | 1992-02-06 | Extruded steps and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0626162A true JPH0626162A (en) | 1994-02-01 |
| JP3074503B2 JP3074503B2 (en) | 2000-08-07 |
Family
ID=13024785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04056350A Expired - Lifetime JP3074503B2 (en) | 1992-02-06 | 1992-02-06 | Extruded steps and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3074503B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030095606A (en) * | 2002-06-12 | 2003-12-24 | (주)두하 | assembly type ladder |
| JP2010065441A (en) * | 2008-09-10 | 2010-03-25 | Kurabo Ind Ltd | Cement-based treadboard for staircase |
| JP2011032674A (en) * | 2009-07-30 | 2011-02-17 | Kuraray Co Ltd | Concrete molding plate of high toughness, method for manufacturing concrete molding, concrete tread of high toughness, and method for manufacturing concrete tread |
-
1992
- 1992-02-06 JP JP04056350A patent/JP3074503B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030095606A (en) * | 2002-06-12 | 2003-12-24 | (주)두하 | assembly type ladder |
| JP2010065441A (en) * | 2008-09-10 | 2010-03-25 | Kurabo Ind Ltd | Cement-based treadboard for staircase |
| JP2011032674A (en) * | 2009-07-30 | 2011-02-17 | Kuraray Co Ltd | Concrete molding plate of high toughness, method for manufacturing concrete molding, concrete tread of high toughness, and method for manufacturing concrete tread |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3074503B2 (en) | 2000-08-07 |
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