EP0941825B1 - Vorrichtung zum Herstellen einer Treppe - Google Patents

Vorrichtung zum Herstellen einer Treppe Download PDF

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Publication number
EP0941825B1
EP0941825B1 EP99650021A EP99650021A EP0941825B1 EP 0941825 B1 EP0941825 B1 EP 0941825B1 EP 99650021 A EP99650021 A EP 99650021A EP 99650021 A EP99650021 A EP 99650021A EP 0941825 B1 EP0941825 B1 EP 0941825B1
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EP
European Patent Office
Prior art keywords
mould
stairway
step forming
concrete
panels
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
Application number
EP99650021A
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English (en)
French (fr)
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EP0941825A3 (de
EP0941825A2 (de
Inventor
Kevin Geraghty
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/22—Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units
    • B28B7/225—Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units for making stairs or stair units comprising more than one step

Definitions

  • This invention relates to the manufacture of precast concrete stairways.
  • a wooden mould is prepared typically comprising a base shaped in the desired stair configuration with upstanding side and end panels to retain concrete poured into the mould.
  • a reinforcement cage is mounted on the base and the concrete is poured into the mould covering the cage.
  • a poker vibrator may be inserted into the concrete to settle the concrete within the mould and exclude air.
  • One problem with wooden moulds is the time taken to construct them for which a skilled mould maker is required.
  • Each mould is of a specific size for a particular application. Also they have a relatively short useful life and can be used only for a very limited number of castings as the surface of the mould tends to deteriorate rapidly which adversely affects the quality of the stairway produced.
  • the mould may be damaged by the poker vibrator if it is used to settle the concrete in a mould and engages a mould face upon insertion into the concrete. Wood being a good insulator it is not practical to heat the mould to accelerate the setting of the concrete and therefore the casting time is relatively long. If the mould is not being discarded then the size of the mould presents a storage problem.
  • Patent Specification US 5511347 discloses a shaped riser pan, a number of which are assembled on site and welded together in situ to form a stairway. A ladle portion of each pan is then filled with concrete to form a tread for each step. Modified pans can also be used to form portion of a mould for precast concrete stairways. A plurality of the pans are interconnected end to end by adjustable clamps to form an integral stairway former in the bottom of a mould in which concrete is cast to form a stairway.
  • JP 02265705 discloses mounting a plurality of L-shaped wooden elements on a pair of steel outer frame to form a mould for casting a stairway.
  • FR 2546440 comprising the features of the preamble of claim 1, shows a wooden mould for forming a precast concrete stairway.
  • DE 19546050 relates to shuttering for forming a precast concrete stairway which includes a support frame on which step moulds are height and tilt adjustable.
  • stairways are moulded on their side, access to the mould is restricted requiring considerable height clearance above the mould for pouring concrete into the mould and for lifting the formed stairway out of the mould. Further, a relatively narrow inlet is provided for filling the mould with concrete when an edge moulding method is employed.
  • the present invention is directed towards overcoming these problems.
  • apparatus for manufacturing a precast concrete stairway comprising the features of claim 1.
  • each modular step forming element comprises an L-shaped inwardly facing moulding wall having a riser forming face and a tread forming face.
  • the internal angle between the panels is an acute angle.
  • the element is formed by a sheet of metal bent intermediate its ends.
  • step forming elements are interengagable.
  • the retaining flange extends along the free edge of the tread panel.
  • the mould comprises a flat support on which the set of step forming elements is arranged between end panels which define the length of the stairway and a pair of spaced-apart side stringer panels extend outwardly of the step forming elements between the end panels to define the width of the stairway.
  • step forming elements are clamped between a pair of spaced-apart fixed stringer panels and an adjustable stringer panel is provided for optionally mounting between the fixed stringer panels for width adjustment of the stairway.
  • each step forming element has reinforcing means mounted between the panels.
  • the reinforcing means is one or more stiffening webs mounted between the panels.
  • the webs may be provided with a notch therein shaped for reception of the joined edges of the panels of the step forming element to facilitate stacking of the step forming elements when not in use.
  • the invention provides a step forming element and a set of step forming elements as described herein for use in the apparatus.
  • the invention provides a method for manufacturing a precast concrete stairway using the apparatus comprising:
  • the method includes mounting reinforcement means in the mould prior to pouring the liquid concrete into the mould.
  • the reinforcement means is a reinforcing cage.
  • the method includes the step of vibrating the liquid concrete in the mould for settling the liquid in the mould prior to setting the concrete in the mould.
  • the method includes the step of heating the mould for accelerating the drying of the concrete in the mould.
  • apparatus for manufacturing a precast concrete stairway comprising a set of modular step forming elements 10 which can be arranged side by side in a row, as illustrated in Figs. 3 and 5, within a mould to define a stairway of steps having a desired riser and tread.
  • Each step forming element 10 comprises a steel sheet bent intermediate its ends into an L-shape having a riser panel 11 and a tread panel 12.
  • the included angle A between the panels 11,12 is an acute angle.
  • a retaining flange 14 is provided along a free edge of the tread panel 12 and serves to interengage the panels 10 when they are arranged in a row as shown in Fig. 3 to form a stairway mould face.
  • the riser panel 11 of one step forming element 10 is engagable with the tread panel 12 of the adjacent step forming element 10.
  • a stairway with any desired number of steps can be built up in a mould 20 as shown in Fig. 5.
  • a spacer 16 may be mounted between the retaining flange 14 of one step forming element 10 and a back face of the riser panel 11 of the adjacent step forming element 10.
  • the going can be readily easily adjusted to accommodate different desired stairway constructions.
  • step forming elements 10 can be provided each set having riser panels 11 of different depth. This will provide a riser variation of between 150mm and 190mm at 2mm intervals. Conveniently for storage the step forming elements 10 will nest together. To differentiate between the twenty different types of step forming elements 10 they can conveniently be colour coded or marked in any other suitable fashion.
  • a mould 20 incorporating the step forming element 10 is shown.
  • the mould 20 comprises a flat support formed by a pair of spaced-apart rails 21 which have substantially horizontal upper support surfaces.
  • a set of the step forming elements 10 are mounted on the rails 21 as shown in Fig. 5 extending outwardly from a fixed stringer panel 23 at one side of the mould 20.
  • a movable stringer panel 24 is positioned on the step forming elements 10 a desired distance apart from the fixed stringer panel 23 to give a desired stair width.
  • End plates (not shown) dose off each end of the mould 20.
  • a heating element 26 is mounted between the rails 21 and is operable to heat the mould 20 for accelerated curing of the concrete.
  • a set of the step forming elements 10 are arranged in the mould 20 as shown in Fig. 5 with the desired riser and going dimensions.
  • a steel reinforcement cage 28 is mounted on the step forming elements 10 and then concrete 29 is poured into the mould 20 covering the cage 28.
  • a poker vibrator is then inserted into the concrete 29 to vibrate the concrete 29 for settling the concrete 29 in the mould 20 and exclude air from the concrete 29.
  • the heating element 26 may be operated to heat the mould 20 with a view to accelerating the setting time of the concrete 29 thus advantageously reducing the production time.
  • Figs. 7 to 19 there is illustrated another apparatus for manufacturing a pre-cast concrete stairway comprising a set of modular step forming elements 30 which are largely similar to the step forming elements described previously.
  • Each step forming element 30 comprises a steel sheet bent intermediate its ends into an L-shape having a riser panel 31 and tread panel 32.
  • a retaining flange 34 is provided along a free edge of the tread panel 32 and serves for interengagement of the panels 30 when they are arranged in a row as shown in Fig. 9 to form a stairway mould face.
  • the riser panel 31 of one step forming element 30 is engagable with the tread panel 32 of the adjacent step forming element 30.
  • a stairway with any desired number of steps can be built up in a mould 40 as shown in Fig. 9.
  • a spacer 36 can be mounted between the retaining flange 34 of one step forming element 30 and a back face of the riser panel 31 of the adjacent step forming element 30.
  • the going can be readily easily adjusted to accommodate different desired stairway configurations.
  • reinforcement is provided between the panels 31, 32 in the form of four spaced-apart stiffening webs 38.
  • This conveniently allows relatively thin material to be used for the panels 31, 32, to facilitate ease of handling, whilst at the same time maintaining adequate strength to prevent spreading of the panels 31, 32 when the concrete is poured into the mould 40.
  • a notch 39 is provided at a bottom of each web 38, this notch 39 having the same shape as the angle of the panels 31, 32 so that the common edge 40 of the panels 31, 32 nests within the notch 39 for convenient stacking of the elements 30 when not in use.
  • Figs. 9 and 10 show the mould 40.
  • a set of the step forming elements 30 are mounted on three spaced-apart support rails 42.
  • Outer, fixed stringer panels 43 engage the sides of the elements 30 which are clamped between the outer stringer panels 43 by means of clamp bars 44 with lock nuts 45, the clamp bars 44 extending between the stringer panels 43.
  • An adjustable stringer 46 can be mounted between the fixed stringers 43 to adjust the width of a stairway being produced.
  • the adjustable stringer 46 can be mounted to one of the side stringers 43 in any suitable fashion.
  • Ends of the mould 40 are dosed off by end plates 48, 49 mounted between the fixed side stringers 43 by supports 50.
  • each of the end plates 48, 49 is of stepped construction. This advantageously reinforces the end plates 48, 49 allowing use of lighter material to facilitate handling and also forms a recess 52 at each end of the stairway 53 produced for reception of mounting brackets 55 which are secured by bolts 56 within the recess 52 such that the bolts 56 do not project outwardly of the recess 52.
  • the mounting brackets 55 are of L-section and are for engagement with upper and lower landings in a building. The mounting bracket 55 is not required at a lower end of the stairway when the stairway is the bottom stairway of the building.
  • Each end plate 48, 49 has a plurality of spaced-apart openings or through holes 60. This is to allow through passage of mounting bolts for supporting a threaded anchor socket within the end of each mould said anchor sockets being for reception of the bolts 56 which hold on the mounting brackets 55. Any of the holes 60 not being used are simply plugged before the casting process.
  • a bar 61 is provided on an outside of the end plate 48, 49 and bolts passing through holes 62 in the bar 61 engage and clamp the anchors against the inner face of the end plates 48, 49 for positioning the anchors within the mould prior to casting.
  • Fig. 19 shows a stairway 53 produced using the mould, the stairway 53 having a plurality of steps 70 each having a tread 71 and a riser 72.
  • the mould according to the invention is easy and simple to set up and use. Also good access is provided for pouring concrete into the mould and for extracting the moulded stairway from the mould.
  • Lifting lugs (not shown) are integrally moulded with the stairway 53 to facilitate lifting the stairway out of the mould, the lifting lugs being provided at a soffit face 75 of the stairway 53.
  • Figs. 20 to 22 show another mould configuration with a different end plate 80 arrangement.
  • the invention provides an apparatus and method for manufacturing a precast concrete stairway in a simple and efficient manner.
  • the moulding apparatus is readily easily adjustable to accommodate different stairway dimensions. It is easy to prepare a stairway mould of any desired length by adding or removing step forming elements. Also, the width of stairway produced is easily adjusted by a movement of the stringer panels together or apart as required to select a desired stairway width. Further, the dimensions of the going and the riser can also be simply adjusted as described herein. It will be noted also that steel, from which the step forming elements are formed, is a much better heat conductor and allows quicker heat curing of the concrete in the mould than can be achieved with wooden moulds. Furthermore the steel construction is more robust than wooden moulds and less susceptible to damage.
  • one or both ends of the mould may be shaped to form a landing at one or both ends of the stairway.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Steps, Ramps, And Handrails (AREA)
  • Paper (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Claims (13)

  1. Vorrichtung zum Herstellen einer Betonfertigtreppe, umfassend eine Schalung (20) mit einer inneren stufenbildenden Seite zum Formen von in die Schalung (20) zugeführtem Beton zu einer gewünschten Treppenkonfiguration, wobei die stufenbildende Seite einen Satz einzelner modularer stufenbildender Elemente (10) umfasst, die nebeneinander in der Schalung (20) angebracht sind, um eine Treppe mit Stufen zu definieren, die eine gewünschte Steigung und eine gewünschte Trittfläche haben, wobei jedes stufenbildende Element (10) L-förmig ist mit einer Steigungsplatte (11) und einer Trittflächenplatte (12), wobei ein Halteflansch (14) an einem freien Rand einer Platte (11, 12) entlang für den Eingriff mit einem freien Rand eines anderen stufenbildenden Elements (10) bereitgestellt ist, dadurch gekennzeichnet, dass:
    wobei der Satz modularer stufenbildender Elemente verstellbar ist, um den Auftritt der Trittfläche zu verstellen,
    wobei ein mit jedem stufenbildenden Element (10) assoziierter Abstandshalter (16) zum Anbringen zwischen dem Halteflansch (14) des stufenbildenden Elements (10) und der Steigungsplatte (11) eines angrenzenden stufenbildenden Elements (10) bereitgestellt ist zum Verstellen des Auftritts der Trittflächenplatte (12).
  2. Vorrichtung nach Anspruch 1, bei der jedes modulare stufenbildende Element (10) eine L-förmige, einwärts gekehrte Schalungswand mit einer steigungsbildenden Seite und einer trittflächenbildenden Seite umfasst.
  3. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der der Innenwinkel zwischen (10) den Platten ein spitzer Winkel ist
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der die stufenbildenden Elemente miteinander in Eingriff gebracht werden können.
  5. Vorrichtung nach Anspruch 1, bei der der Halteflansch (14) sich am freien Rand der Trittflächenplatte (12) entlang erstreckt.
  6. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der die Schalung (20) eine flache Auflage (21) aufweist, auf der der Satz stufenbildender Elemente (10) zwischen Endplatten, die die Länge der Treppe definieren, angeordnet ist und ein Paar voneinander beabstandeter seitlicher Treppenwangenplatten (23, 24) sich auswärts der stufenbildenden Elemente (10) zwischen den Endplatten erstreckt, um die Breite der Treppe zu definieren.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der die stufenbildenden Elemente (10) zwischen einem Paar beabstandeter fester Treppenwangenplatten (23) eingespannt sind und eine verstellbare Treppenwangenplatte (24) zum wahlweisen Anbringen zwischen den festen Treppenwangenplatten (23) bereitgestellt ist zum Verstellen der Treppenbreite.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der jedes stufenbildende Element (30) ein zwischen den Platten (31, 32) angebrachtes Verstärkungsmittel (30) hat.
  9. Verfahren zum Herstellen einer Betonfertigtreppe mithilfe der Vorrichtung nach einem der vorhergehenden Ansprüche, umfassend:
    Herstellen von einer eine Mehrzahl von L-förmigen stufenbildenden Elementen (10) beinhaltenden Schalung (20), die zum Verstellen des Auftritts der Trittfläche verstellbar ist, indem Abstandshalter (16) zwischen den nebeneinander liegenden Flanschen (14) der stufenbildenden Elemente (10) und den Steigungsplatten (11) nebeneinander liegender stufenbildender Elemente (10) angebracht werden,
    Zubereiten von Flüssigbeton,
    Gießen des Flüssigbetons in die Schalung (20),
    Härten des Flüssigbetons zum Bilden einer Treppe und
    Entfernen der Treppe aus der Schalung (20).
  10. Verfahren nach Anspruch 9, wobei das Verfahren die Anbringung eines Verstärkungsmittels (28) in der Schalung (20) vor dem Gießen des Flüssigbetons in die Schalung (20) beinhaltet.
  11. Verfahren nach Anspruch 10, bei dem das Verstärkungsmittel ein Verstärkungskäfig (28) ist.
  12. Verfahren nach einem der Ansprüche 9 bis 11, wobei das Verfahren den Schritt des Vibrierens des Flüssigbetons in der Schalung (20) zum Setzen der Flüssigkeit in der Schalung (20) vor dem Härten des Betons in der Schalung (20) beinhaltet.
  13. Verfahren nach einem der Ansprüche 9 bis 12, wobei das Verfahren den Schritt des Erwärmens der Schalung (20) zum Beschleunigen des Trocknens des Betons in der Schalung (20) beinhaltet.
EP99650021A 1998-03-11 1999-03-11 Vorrichtung zum Herstellen einer Treppe Expired - Lifetime EP0941825B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IE980181 1998-03-11
IE980181 1998-03-11

Publications (3)

Publication Number Publication Date
EP0941825A2 EP0941825A2 (de) 1999-09-15
EP0941825A3 EP0941825A3 (de) 2000-12-13
EP0941825B1 true EP0941825B1 (de) 2004-08-18

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EP99650021A Expired - Lifetime EP0941825B1 (de) 1998-03-11 1999-03-11 Vorrichtung zum Herstellen einer Treppe

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EP (1) EP0941825B1 (de)
AT (1) ATE273780T1 (de)
DE (1) DE69919432D1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10500760B2 (en) * 2016-02-19 2019-12-10 II Richard J. Eggleston Method and apparatus for production of precision precast concrete flights of stairs
CN109109139A (zh) * 2018-10-25 2019-01-01 贵州中昇东浩科技有限公司 一种预制楼梯模具
CN110259119A (zh) * 2019-06-13 2019-09-20 中国建筑第二工程局有限公司 一种可重复使用的楼梯施工模具
FR3110188B1 (fr) * 2020-05-15 2022-04-29 Pbm Groupe Procede pour la realisation d’une structure ou d’une partie de structure monobloc tridimensionnelle en beton et structure ou partie de structure tridimensionnelle en beton ainsi obtenue
CN113232134A (zh) * 2021-06-28 2021-08-10 济南一建集团有限公司 一种装配式建筑用可调式楼板模具
CN114179198A (zh) * 2021-12-15 2022-03-15 湖南东方红新型建材有限公司 一种预制楼梯构件生产线及其生产方法
CN116985259B (zh) * 2023-09-28 2023-12-08 山西建投建筑产业有限公司 一种装配式带护角楼梯的施工方法
CN117697953B (zh) * 2024-02-05 2024-04-09 山东广发建材制品有限公司 一种混凝土预制楼梯的浇筑设备

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2161822A (en) * 1937-09-23 1939-06-13 Kogl Frank Apparatus for precasting concrete stair structures
FR2546440B1 (fr) * 1983-05-26 1985-09-06 Ricard Hubert Coffrage en bois pour l'execution de volees droites d'escaliers en beton
GB2217359B (en) * 1988-04-13 1991-11-27 Bison Limited Concrete staircases
JP2686555B2 (ja) * 1989-04-06 1997-12-08 東急建設株式会社 階段成形用型枠
GB9026631D0 (en) * 1990-12-07 1991-01-23 Costain Building Prod Improvements in or relating to moulds for casting concrete or other cementitious components
US5511347A (en) * 1994-11-07 1996-04-30 Schwarz; Horst G. W. Adjustable sheet metal moulds for steel and precast concrete stairs
DE19546050C1 (de) * 1995-12-09 1996-12-05 Bernhard Luetkenhaus Hochbau S Treppenschalung zur Herstellung einer Fertigteiltreppe

Also Published As

Publication number Publication date
ATE273780T1 (de) 2004-09-15
EP0941825A3 (de) 2000-12-13
EP0941825A2 (de) 1999-09-15
DE69919432D1 (de) 2004-09-23

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