EP0689917B1 - Packerhead for a reinforced concrete pipe making machine - Google Patents

Packerhead for a reinforced concrete pipe making machine Download PDF

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Publication number
EP0689917B1
EP0689917B1 EP95106678A EP95106678A EP0689917B1 EP 0689917 B1 EP0689917 B1 EP 0689917B1 EP 95106678 A EP95106678 A EP 95106678A EP 95106678 A EP95106678 A EP 95106678A EP 0689917 B1 EP0689917 B1 EP 0689917B1
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EP
European Patent Office
Prior art keywords
drive shaft
rollers
smoothing cylinder
smoothing
cylinder
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EP95106678A
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German (de)
French (fr)
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EP0689917A3 (en
EP0689917A2 (en
Inventor
Gerhard Wensauer
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Wensauer Betonwerk GmbH
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Wensauer Betonwerk GmbH
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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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
    • B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
    • B28B21/22—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts
    • B28B21/24—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts using compacting heads, rollers, or the like
    • B28B21/247—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts using compacting heads, rollers, or the like the rollers of the compaction head being driven, e.g. to overcome or modify the tangential force
    • 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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
    • B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
    • B28B21/22—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts
    • B28B21/24—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts using compacting heads, rollers, or the like

Definitions

  • the invention relates to a compression head Manufacturing machine for reinforced concrete pipes, with one on a drive shaft non-rotatably mounted smoothing cylinder for smoothing the Inside of the concrete mix poured into a vertical shape and one provided at the upper end of the smoothing cylinder, separated from this and connected to a drive Top wall of the smoothing cylinder, on the rollers for radial Compaction of the concrete mix parallel to the axis of the drive shaft rotatably mounted relative to the top wall and together with the Cover wall with a predetermined circulation speed around the Axis of the drive shaft can be driven around, the direction of rotation the roles around their own axis opposite to that the top wall is about the axis of the drive shaft and the top wall of the smoothing cylinder on its drive shaft relative to this is rotatably mounted.
  • the drive motor there and the gear of the smoothing cylinder can be omitted, so that the smoothing cylinder rotates freely and between the rollers and the reinforced concrete pipe a resulting tangential preload force be exercised in one direction or another can by changing the gear ratio between a common Drive shaft of the rollers and the rollers larger or smaller is chosen as one.
  • this will make the tangential preload force less controllable than with the first variant. Therefore, the first variant is preferred there.
  • the invention has for its object a compression head of the generic type, in which a torsion-free Compaction of the concrete when manufacturing a concrete pipe is ensured.
  • this object is achieved in that the roles with respect to the drive around its own axis connected to the drive shaft of the smoothing cylinder via a gear are whose gear ratio is chosen so that the peripheral speed of the rollers is substantially the same their orbital velocity is.
  • the transmission inside the Smoothing cylinder is arranged.
  • it is housed in a space-saving manner and also largely protected from fresh concrete.
  • rollers on their upper End faces are provided with blades and axially with radial Play in part-circular cutouts on the circumference of one on the Drive shaft rotatably mounted circular disk, their upper end faces flush with the top of the circular disc are and their peripheral surfaces over the
  • a top wall 3 on the drive shaft 1 relative to this rotatably mounted Is above the upper end face of the smoothing cylinder 2 a top wall 3 on the drive shaft 1 relative to this rotatably mounted.
  • the top wall 3 is axially from the smoothing cylinder 2 separated and has an axially extending downward Circumferential wall 4. Between the circumferential wall 4 and the smoothing cylinder 2 there is an axial gap.
  • rollers 5a to 5d On the top wall 3 are rollers 5a to 5d for the radial compression of the concrete mixture axially parallel to the drive shaft 1 rotatably mounted.
  • the rollers 5a to 5d are non-rotatably on shafts 6a to 6d (See also Fig.
  • a sprocket 8a and a further sprocket 8b in below the sprocket 8a Height of the lower sprockets 7c and 7d rotatably on the drive shaft 1 mounted.
  • Around the upper sprockets 7a, 7b and 8a runs with the teeth of these sprockets 7a, 7b and 8a engaged chain 9a while around the Sprockets 7c, 7d and 8b another chain 9b runs around those with the teeth of these sprockets 7c, 7d and 8b in Intervention stands.
  • the sprockets 7a to 7d, the sprockets 8a, 8b and the chains 9a, 9b together form a gear 10, via which the rollers 5a to 5d are driven with the drive shaft 1 are connected.
  • the gear 10 is space-saving arranged inside the smoothing cylinder 2 and by the Cylinder 2, the top wall 3 and its peripheral wall 4 largely protected from contamination by the concrete.
  • rollers 5a to 5d are on their upper end faces provided about radial and axially upstanding blades 11 and protrude axially with radial play in part-circular cutouts 12 rotatable on the circumference of the drive shaft 1 mounted circular disc 13, its upper end faces are flush with the top of the circular disc 13 and their Radial surfaces over the circumference of the circular disk 13 protrude slightly to the outside.
  • the circumference of the rollers 5a - 5d has approximately the same circumference as the smoothing cylinder 2.
  • the circular disk 13 is like the top wall 3 on one another, hollow shaft 14 rotatably mounted, the coaxial to Drive shaft 1 is rotatably mounted on this.
  • the waves 1 and 14 are opposed by one not shown Drive via a reversing gear, not shown, the is arranged outside or inside the smoothing cylinder 2, or powered by separate drives.
  • the gear ratio of the transmission 10 is selected so that the Circumferential speed of the rollers 5a to 5d by their own Axis preferably at least equal to its rotational speed is about the axis of the drive shaft 1.
  • the peripheral speed can also be up to 20% higher or up to 5% lower than the revolution speed than the revolution speed his.
  • a belt transmission e.g. a toothed belt transmission, or a gear transmission is provided his.
  • the peripheral wall 4 can be axially shorter than be shown or omitted entirely.
  • the top wall 3 can with or without the peripheral wall 4 within the upper Be end of the smoothing cylinder 2 with a radial gap.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Forging (AREA)

Abstract

A compacting head has an inside wall-smoothing cylinder with cover plate rollers which are powdered round a drive shaft axis in one direction and which rotate round their own axis opposite to this. Thus the cover wall (3) of the smoothing cylinder (2) rotates round drive shaft (1) and the radially compacting rollers (5a-d) are geared (10) drivably round their own axes to the drive shaft (1) using a ratio selected to give a roller peripheral speed equal to their rotation speed. Gearing (10) is arranged inside the cylinder and the rollers have blades (11) on their upper endface and project axially with radial play into peripheral excisions (12) round a circular disc (13), rotatably mounted on the shaft. The top endfaces of the rollers lie flush with the top face of the disc as against the roller circumferences which project beyond the discs.

Description

Die Erfindung bezieht sich auf einen Verdichtungskopf einer Fertigungsmaschine für Stahlbetonrohre, mit einem auf einer Antriebswelle drehfest gelagerten Glättzylinder zum Glätten der Innenseite der in eine vertikale Form eingefüllten Betonmischung und einer am oberen Ende des Glättzylinders vorgesehenen, von diesem getrennt gelagerten und mit einem Antrieb verbundenen Deckwand des Glättzylinders, auf der Rollen zur radialen Verdichtung der Betonmischung achsparallel zur Antriebswelle relativ zur Deckwand drehbar gelagert und zusammen mit der Deckwand mit einer vorbestimmten Umlaufgeschwindigkeit um die Achse der Antriebswelle herum antreibbar sind, wobei die Drehrichtung der Rollen um ihre eigene Achse entgegengesetzt zu der der Deckwand um die Achse der Antriebswelle ist und die Deckwand des Glättzylinders auf dessen Antriebswelle relativ zu dieser drehbar gelagert ist.The invention relates to a compression head Manufacturing machine for reinforced concrete pipes, with one on a drive shaft non-rotatably mounted smoothing cylinder for smoothing the Inside of the concrete mix poured into a vertical shape and one provided at the upper end of the smoothing cylinder, separated from this and connected to a drive Top wall of the smoothing cylinder, on the rollers for radial Compaction of the concrete mix parallel to the axis of the drive shaft rotatably mounted relative to the top wall and together with the Cover wall with a predetermined circulation speed around the Axis of the drive shaft can be driven around, the direction of rotation the roles around their own axis opposite to that the top wall is about the axis of the drive shaft and the top wall of the smoothing cylinder on its drive shaft relative to this is rotatably mounted.

Bei einem bekannten Verdichtungskopf dieser Art (DE-A1-27 38 944 oder US-A-4 540 539) werden die die Verdichtung bewirkenden Rollen lediglich dadurch in Drehung versetzt, daß sie bei der Drehung der Deckwand des Glättzylinders am Beton, ähnlich wie Schlepprollen, abrollen, ohne unmittelbar angetrieben zu werden. Hierbei schieben die Rollen den Frischbeton wie eine Bugwelle vor sich her, so daß die Verdichtung des Betons nicht torsionsfrei ist und auf der in Bewegungsrichtung hinteren Seite der Stahldrähte des Bewehrungskorbs stärker als auf der Vorderseite der Stahldrähte ist. Die Folge sind Risse im fertigen Betonrohr.In a known compression head of this type (DE-A1-27 38 944 or US-A-4,540,539) are those which cause the compaction Rolls only rotated in that they at the Rotation of the top wall of the smoothing cylinder on the concrete, similar to Drag rollers, roll off without being driven directly. The rollers push the fresh concrete like a bow wave ahead of itself so that the concrete does not compact is torsion-free and on the rear in the direction of movement Side of the steel wires of the reinforcement cage stronger than on the Front of the steel wires is. The result is cracks in the finished Concrete pipe.

Aus der US-A-3 632 270 ist es bekannt, auf dem Glättzylinder gelagerte Rollen gemäß einer bevorzugten Variante durch einen eigenen Motor über ein außerhalb und ein innerhalb des Glättzylinders angeordnetes Getriebe und den Glättzylinder durch einen eigenen Motor über ein außerhalb des Glättzylinders gelagertes Getriebe anzutreiben und die Drehzahl des Antriebsmotors der Rollen so zu regeln, daß die Umfangsgeschwindigkeit der Rollen im wesentlichen gleich ihrer Umlaufgeschwindigkeit an der Innenseite des Stahlbetonrohres ist und in einem festen Verhältnis zur Umfangsgeschwindigkeit des Glättzylinders steht. Gleichzeitig wird das Drehmoment des Rollen-Antriebsmotors geregelt. Dies erfordert eine aufwendige Regeleinrichtung. Alternativ sollen dort gemäß einer zweiten Variante der Antriebsmotor und das Getriebe des Glättzylinders weggelassen werden, so daß sich der Glättzylinder frei dreht und zwischen den Rollen und dem Stahlbetonrohr eine resultierende tangentiale Vorbelastungskraft in der einen oder anderen Richtung ausgeübt werden kann, indem das Übersetzungsverhältnis zwischen einer gemeinsamen Antriebswelle der Rollen und den Rollen größer oder kleiner als eins gewählt wird. Dadurch wird jedoch die tangentiale Vorbelastungskraft weniger steuerbar als bei der ersten Variante. Daher wird dort die erste Variante bevorzugt.From US-A-3 632 270 it is known on the smoothing cylinder stored roles according to a preferred variant by a own motor via one outside and one inside the smoothing cylinder arranged gear and the smoothing cylinder by a own motor via a bearing outside the smoothing cylinder Drive gear and the speed of the drive motor Rolls to regulate so that the peripheral speed of the rolls essentially equal to their orbital velocity on the inside of the reinforced concrete pipe and in a fixed ratio to the peripheral speed of the smoothing cylinder. At the same time, the torque of the roller drive motor is regulated. This requires complex control equipment. alternative According to a second variant, the drive motor there and the gear of the smoothing cylinder can be omitted, so that the smoothing cylinder rotates freely and between the rollers and the reinforced concrete pipe a resulting tangential preload force be exercised in one direction or another can by changing the gear ratio between a common Drive shaft of the rollers and the rollers larger or smaller is chosen as one. However, this will make the tangential preload force less controllable than with the first variant. Therefore, the first variant is preferred there.

Der Erfindung liegt die Aufgabe zugrunde, einen Verdichtungskopf der gattungsgemäßen Art anzugeben, bei dem eine torsionsfreie Verdichtung des Betons bei der Herstellung eines Betonrohres sichergestellt ist.The invention has for its object a compression head of the generic type, in which a torsion-free Compaction of the concrete when manufacturing a concrete pipe is ensured.

Erfindungsgemäß ist diese Aufgabe dadurch gelöst, daß die Rollen bezüglich der Drehung um ihre eigene Achse antriebsmäßig mit der Antriebswelle des Glättzylinders über ein Getriebe verbunden sind, dessen Übersetzungsverhältnis so gewählt ist, daß die Umfangsgeschwindigkeit der Rollen im wesentlichen gleich ihrer Umlaufgeschwindigkeit ist.According to the invention this object is achieved in that the roles with respect to the drive around its own axis connected to the drive shaft of the smoothing cylinder via a gear are whose gear ratio is chosen so that the peripheral speed of the rollers is substantially the same their orbital velocity is.

Bei dieser Ausbildung wird der Beton nicht vor den Rollen hergeschoben, sondern in Umfangsrichtung des Rohres schubfrei in radialer Richtung nach außen verdichtet. Infolgedessen ergibt sich eine vollkommene Umhüllung der Stahldrähte des Bewehrungskorbs, und zwischen Korb und Beton entstehen keine Spannungen, so daß keine Risse im Inneren des Betons auftreten.With this training, the concrete is not pushed in front of the rollers, but shear-free in the circumferential direction of the tube compressed in the radial direction to the outside. As a result a complete covering of the steel wires of the reinforcement cage, and there is no tension between the basket and the concrete, so that there are no cracks inside the concrete.

Vorzugsweise ist dafür gesorgt, daß das Getriebe im Inneren des Glättzylinders angeordnet ist. Hier ist es raumsparend untergebracht und zudem vor dem Frischbeton weitgehend geschützt.It is preferably ensured that the transmission inside the Smoothing cylinder is arranged. Here it is housed in a space-saving manner and also largely protected from fresh concrete.

Sodann kann dafür gesorgt sein, daß die Rollen auf ihren oberen Stirnflächen mit Schaufeln versehen sind und axial mit radialem Spiel in teilkreisförmige Ausschnitte am Umfang einer auf der Antriebswelle drehbar gelagerten Kreisscheibe ragen, wobei ihre oberen Stirnflächen mit der Oberseite der Kreisscheibe bündig sind und ihre Umfangsflächen über den Then it can be ensured that the rollers on their upper End faces are provided with blades and axially with radial Play in part-circular cutouts on the circumference of one on the Drive shaft rotatably mounted circular disk, their upper end faces flush with the top of the circular disc are and their peripheral surfaces over the

Umfang der Kreisscheibe vorstehen. Die Schaufeln der Rollen und die auf diese Weise zusammen mit den Rollen rotierende Kreisscheibe üben auf den von oben auf die Kreisscheibe und zwischen die Schaufeln fallenden Frischbeton eine Zentrifugalkraft aus, durch die der Frischbeton radial nach außen gegen die Innenseite der Form geschleudert wird. Hierbei erfolgt bereits eine gewisse Vorverdichtung.Project the circumference of the circular disc. The blades of the rollers and rotating in this way together with the rollers Practice the circular disc from above onto the circular disc and centrifugal force falling between the blades of fresh concrete through which the fresh concrete radially outwards is thrown against the inside of the mold. in this connection there is already some pre-compression.

Die Erfindung und ihre Weiterbildungen werden nachstehend anhand der Zeichnung näher beschrieben. Es zeigen:

  • Fig. 1 eine perspektivische Ansicht eines erfindungsgemäßen Verdichtungskopfes in aufgebrochenem Zustand und schematischer Darstellung und
  • Fig. 2 einen Querschnitt durch den Glättzylinder mit einer Unteransicht eines darin angeordneten Getriebes.
    • The invention and its developments are described below with reference to the drawing. Show it:
  • Fig. 1 is a perspective view of a compression head according to the invention in a broken state and a schematic representation and
  • Fig. 2 shows a cross section through the smoothing cylinder with a bottom view of a gear arranged therein.

    • Nach Fig. 1 ist auf einer Antriebswelle 1 ein Glättzylinder 2 zum Glätten der Innenseite der in eine vertikale (nicht dargestellte) Form eingefüllten Betonmischung drehfest gelagert. Oberhalb der oberen Stirnseite des Glättzylinders 2 ist eine Deckwand 3 auf der Antriebswelle 1 relativ zu dieser drehbar gelagert. Die Deckwand 3 ist axial vom Glättzylinder 2 getrennt und hat eine sich axial nach unten erstreckende Umfangswand 4. Zwischen der Umfangswand 4 und dem Glättzylinder 2 befindet sich ein axialer Spalt. Auf der Deckwand 3 sind Rollen 5a bis 5d zur radialen Verdichtung der Betonmischung achsparallel zur Antriebswelle 1 drehbar gelagert. Die Rollen 5a bis 5d sitzen drehfest auf Wellen 6a bis 6d (siehe auch Fig. 2), die die Deckwand 3 drehbar durchsetzen. Auf jeder Welle 6a bis 6d ist jeweils ein Kettenrad 7a bis 7d drehfest gelagert. Die Wellen 6c und 6d sind in Fig. 1 nicht zu sehen, weil sie durch die Wellen 6a und 6b verdeckt sind.1 is a smoothing cylinder 2 on a drive shaft 1 to smooth the inside of a vertical (not shown) form filled concrete mix rotatably mounted. Is above the upper end face of the smoothing cylinder 2 a top wall 3 on the drive shaft 1 relative to this rotatably mounted. The top wall 3 is axially from the smoothing cylinder 2 separated and has an axially extending downward Circumferential wall 4. Between the circumferential wall 4 and the smoothing cylinder 2 there is an axial gap. On the top wall 3 are rollers 5a to 5d for the radial compression of the concrete mixture axially parallel to the drive shaft 1 rotatably mounted. The rollers 5a to 5d are non-rotatably on shafts 6a to 6d (See also Fig. 2), which pass through the top wall 3 rotatably. There is a sprocket 7a to 7d on each shaft 6a to 6d non-rotatably mounted. The waves 6c and 6d are not in Fig. 1 to see because they are covered by waves 6a and 6b.

    In Höhe der Kettenräder 7a und 7b ist ein Kettenrad 8a und unterhalb des Kettenrades 8a ein weiteres Kettenrad 8b in Höhe der tiefer gelegenen Kettenräder 7c und 7d drehfest auf der Antriebswelle 1 gelagert. Um die oberen Kettenräder 7a, 7b und 8a läuft eine mit den Zähnen dieser Kettenräder 7a, 7b und 8a in Eingriff stehende Kette 9a herum, während um die Kettenräder 7c, 7d und 8b eine weitere Kette 9b herumläuft, die mit den Zähnen dieser Kettenräder 7c, 7d und 8b in Eingriff steht. Die Kettenräder 7a bis 7d, die Kettenräder 8a, 8b und die Ketten 9a, 9b bilden gemeinsam ein Getriebe 10, über das die Rollen 5a bis 5d antriebsmäßig mit der Antriebswelle 1 verbunden sind. Das Getriebe 10 ist raumsparend im Inneren des Glättzylinders 2 angeordnet und durch den Zylinder 2, die Deckwand 3 und deren Umfangswand 4 weitgehend vor Verschmutzung durch den Beton geschützt.At the level of the sprockets 7a and 7b is a sprocket 8a and a further sprocket 8b in below the sprocket 8a Height of the lower sprockets 7c and 7d rotatably on the drive shaft 1 mounted. Around the upper sprockets 7a, 7b and 8a runs with the teeth of these sprockets 7a, 7b and 8a engaged chain 9a while around the Sprockets 7c, 7d and 8b another chain 9b runs around those with the teeth of these sprockets 7c, 7d and 8b in Intervention stands. The sprockets 7a to 7d, the sprockets 8a, 8b and the chains 9a, 9b together form a gear 10, via which the rollers 5a to 5d are driven with the drive shaft 1 are connected. The gear 10 is space-saving arranged inside the smoothing cylinder 2 and by the Cylinder 2, the top wall 3 and its peripheral wall 4 largely protected from contamination by the concrete.

    Die Rollen 5a bis 5d sind auf ihren oberen Stirnflächen mit etwa radialen und axial hochstehenden Schaufeln 11 versehen und ragen axial mit radialem Spiel in teilkreisförmige Ausschnitte 12 am Umfang einer auf der Antriebswelle 1 drehbar gelagerten Kreisscheibe 13, wobei ihre oberen Stirnflächen mit der Oberseite der Kreisscheibe 13 bündig sind und ihre Umfangsflächen über den Umfang der Kreisscheibe 13 radial nach außen etwas vorstehen. Der Umkreis der Rollen 5a - 5d hat etwa den gleichen Umfang wie der Glättzylinder 2.The rollers 5a to 5d are on their upper end faces provided about radial and axially upstanding blades 11 and protrude axially with radial play in part-circular cutouts 12 rotatable on the circumference of the drive shaft 1 mounted circular disc 13, its upper end faces are flush with the top of the circular disc 13 and their Radial surfaces over the circumference of the circular disk 13 protrude slightly to the outside. The circumference of the rollers 5a - 5d has approximately the same circumference as the smoothing cylinder 2.

    Die Kreisscheibe 13 ist ebenso wie die Deckwand 3 auf einer weiteren, hohlen Welle 14 drehfest gelagert, die koaxial zur Antriebswelle 1 auf dieser drehbar gelagert ist. Die Wellen 1 und 14 werden gegensinnig durch einen nicht dargestellten Antrieb über ein nicht dargestelltes Umlenkgetriebe, das außerhalb oder innerhalb des Glättzylinders 2 angeordnet ist, oder durch eigene separate Antriebe angetrieben. Das Übersetzungsverhältnis des Getriebes 10 ist so gewählt, daß die Umfangsgeschwindigkeit der Rollen 5a bis 5d um ihre eigene Achse vorzugsweise wenigstens gleich ihrer Umlaufgeschwindigkeit um die Achse der Antriebswelle 1 ist. Die Umfangsgeschwindigkeit kann auch bis zu 20 % höher oder bis zu 5 % niedriger als die Umlaufgeschwindigkeit als die Umlaufgeschwindigkeit sein.The circular disk 13 is like the top wall 3 on one another, hollow shaft 14 rotatably mounted, the coaxial to Drive shaft 1 is rotatably mounted on this. The waves 1 and 14 are opposed by one not shown Drive via a reversing gear, not shown, the is arranged outside or inside the smoothing cylinder 2, or powered by separate drives. The gear ratio of the transmission 10 is selected so that the Circumferential speed of the rollers 5a to 5d by their own Axis preferably at least equal to its rotational speed is about the axis of the drive shaft 1. The peripheral speed can also be up to 20% higher or up to 5% lower than the revolution speed than the revolution speed his.

    Wenn die Antriebswelle 1 in Richtung des Pfeils 15 gedreht wird, drehen sich alle übrigen Teile in Richtung der eingezeichneten Drehrichtungspfeile. Gleichzeitig wird der gesamte Verdichtungskopf in der Form axial nach oben bewegt, wobei der den Rollen 5a bis 5d axial nachfolgende Glättzylinder 2 den Porenschluß der inneren Rohroberfläche durch Glättung übernimmt. Da die Rollen 5a bis 5d durch die Antriebswelle 1 über das Getriebe 10 starr angetrieben und nicht lediglich durch ein Abrollen an der Innenseite des Betonrohres bei der Verdichtung gedreht werden, wird der frische Beton bei der Verdichtung nicht vor den Rollen 5a bis 5d hergeschoben, sondern schubfrei in radialer Richtung nach außen verdichtet. Dadurch ergibt sich eine vollkommene Umhüllung der Stahldrähte des Bewehrungskorbs. Zwischen Korb und Beton entstehen keine Spannungen, so daß keine Risse im Inneren des Betons auftreten.When the drive shaft 1 rotated in the direction of arrow 15 all other parts turn in the direction of the arrows in the direction of rotation. At the same time the entire compression head in the form moved axially upwards, the smoothing cylinder axially following the rollers 5a to 5d 2 through the pore closure of the inner tube surface Smoothing takes over. Since the rollers 5a to 5d by the Drive shaft 1 rigidly driven via the gear 10 and not just by rolling on the inside of the Concrete pipe are rotated during compaction fresh concrete during compaction not in front of rollers 5a to 5d pushed, but shear-free in the radial direction compacted outside. This results in a perfect one Sheathing the steel wires of the reinforcement cage. Between basket and concrete there are no tensions, so that no cracks in the Occur inside the concrete.

    Anstelle des Kettengetriebes 10 kann auch ein Riemengetriebe, z.B. ein Zahnriemengetriebe, oder ein Zahnradgetriebe vorgesehen sein. Die Umfangswand 4 kann axial kürzer als dargestellt sein oder ganz weggelassen werden. Die Deckwand 3 kann mit oder ohne die Umfangswand 4 innerhalb des oberen Endes des Glättzylinders 2 mit radialem Spalt gelagert sein.Instead of the chain transmission 10, a belt transmission, e.g. a toothed belt transmission, or a gear transmission is provided his. The peripheral wall 4 can be axially shorter than be shown or omitted entirely. The top wall 3 can with or without the peripheral wall 4 within the upper Be end of the smoothing cylinder 2 with a radial gap.

    Claims (3)

    1. Compaction head of a production machine for reinforced concrete pipes, with a smoothing cylinder (2), which is mounted on a drive shaft (1) to be secure against rotation relative thereto, for smoothing the inner side of a concrete mixture filled into a vertical mould and a cover wall (3), which is provided at the upper end of the smoothing cylinder (2) and mounted separately therefrom and which is connected with a drive, of the smoothing cylinder (2), on which rollers (5a to 5d) for radial compaction of the concrete mixture are mounted to be axially parallel to the drive shaft (1) and rotatable relative to the cover wall (3) and are drivable together with the cover wall (3) at a predetermined speed of circulation about the axis of the drive shaft (1), wherein the rotational direction of the rollers (5a to 5d) about their own axes is opposite to that of the cover wall (3) about the axis of the drive shaft (1) and the cover wall (3) of the smoothing cylinder (2) is mounted on the drive shaft (1) thereof to be rotatable relative thereto, characterised in that the rollers (5a to 5d) with respect to the rotation about their own axes are connected in terms of drive with the drive shaft (1) of the smoothing cylinder (2) by way of a gear (10), the translation ratio of which is so selected that the circumferential speed of the rollers (5a to 5d) is substantially equal to their speed of circulation.
    2. Compaction head according to claim 1, characterised in that the gear (10) is arranged in the interior of the smoothing cylinder (2).
    3. Compaction head according to claim 1 or 2, characterised in that the rollers (5a to 5d) are provided on their upper end surfaces with blades (11) and axially project with radial play into cut-outs (12) of part-circular shape at the circumference of a circular disc (13) rotatably mounted on the drive shaft (1), wherein their upper end surfaces are flush with the upper side of the circular disc (13) and their circumferential surfaces project beyond the circumference of the circular disc (13).
    EP95106678A 1994-06-30 1995-05-04 Packerhead for a reinforced concrete pipe making machine Expired - Lifetime EP0689917B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE4422891 1994-06-30
    DE4422891A DE4422891C1 (en) 1994-06-30 1994-06-30 Compression head of a manufacturing machine for reinforced concrete pipes

    Publications (3)

    Publication Number Publication Date
    EP0689917A2 EP0689917A2 (en) 1996-01-03
    EP0689917A3 EP0689917A3 (en) 1997-06-18
    EP0689917B1 true EP0689917B1 (en) 2002-01-23

    Family

    ID=6521888

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP95106678A Expired - Lifetime EP0689917B1 (en) 1994-06-30 1995-05-04 Packerhead for a reinforced concrete pipe making machine

    Country Status (5)

    Country Link
    US (1) US5616351A (en)
    EP (1) EP0689917B1 (en)
    AT (1) ATE212278T1 (en)
    DE (2) DE4422891C1 (en)
    ES (1) ES2168103T3 (en)

    Families Citing this family (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US6017208A (en) * 1997-05-28 2000-01-25 Concrete Technology Integrators, Inc. Chain driven roller system for use in concrete pipe manufacturing
    US20060169868A1 (en) * 2005-01-31 2006-08-03 Precast Concepts, Llc Precast concrete meter pit and method and apparatus for making same
    US8282869B2 (en) * 2005-01-31 2012-10-09 Precast Concepts, Llc Method for making precast concrete meter pit
    ITBL20090019A1 (en) * 2009-07-31 2011-02-01 Colle Spa SPINDLE WITH ROLLER PRESSERS WITH VARIABLE ROTATION, PARTICULARLY FOR THE FORMATION OF CONCRETE TUBES
    CN108189216A (en) * 2018-03-16 2018-06-22 江苏威姿曼机械有限公司 A kind of radial compression machine
    CN112388818A (en) * 2020-11-18 2021-02-23 杭州天佳建材科技有限公司 Casting molding method for assembled building beam column

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    DE2738944A1 (en) * 1977-08-30 1979-03-15 Horst Ing Grad Kern PROCESS FOR PRODUCING A CONCRETE PIPE AND DEVICE FOR CARRYING OUT THE PROCESS

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    US3632270A (en) * 1969-03-14 1972-01-04 Clifford Aubrey Baker Manufacture of concrete pipes
    US4340553A (en) * 1978-12-29 1982-07-20 Hydrotile Machinery Company Machine and method for making concrete product
    DE3060397D1 (en) * 1979-03-08 1982-07-01 Fischer Ag Georg Apparatus for pressing a concrete pipe in an underlying socket by centrifugal force
    US4336013A (en) * 1979-05-16 1982-06-22 Kerr Concrete Pipe Company Apparatus for forming concrete articles of uniform density
    US4407648A (en) * 1980-09-18 1983-10-04 Hydrotile Machinery Company Counter rotating packerhead assembly
    US4540539A (en) * 1982-12-21 1985-09-10 International Pipe Machinery Corp. Method and apparatus for production of concrete pipe by the packerhead method
    US4690631A (en) * 1986-03-06 1987-09-01 Hydrotile Machinery Company Packerhead with elastic rollers
    DE3807511A1 (en) * 1988-03-08 1989-09-21 Gregor Kern METHOD FOR PRODUCING CONCRETE PIPES AND PIPE PRESS FOR CARRYING OUT THE METHOD
    US4957424A (en) * 1989-03-13 1990-09-18 Hydrotile Machinery Company Concrete pipe making machine
    US5147196A (en) * 1989-11-13 1992-09-15 International Pipe Machinery Corporation Machine for making concrete pipes
    US5080571A (en) * 1990-02-28 1992-01-14 International Pipe Machinery Corporation Packerhead assembly
    US5364578A (en) * 1992-11-23 1994-11-15 International Pipe Machinery Corp. Combination counter rotating packerhead and vibrator assembly and method of operation thereof

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    Also Published As

    Publication number Publication date
    EP0689917A3 (en) 1997-06-18
    DE59510006D1 (en) 2002-03-14
    US5616351A (en) 1997-04-01
    EP0689917A2 (en) 1996-01-03
    DE4422891C1 (en) 1995-03-02
    ES2168103T3 (en) 2002-06-01
    ATE212278T1 (en) 2002-02-15

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