EP0745739B1 - Building block of foam mortar - Google Patents
Building block of foam mortar Download PDFInfo
- Publication number
- EP0745739B1 EP0745739B1 EP96108350A EP96108350A EP0745739B1 EP 0745739 B1 EP0745739 B1 EP 0745739B1 EP 96108350 A EP96108350 A EP 96108350A EP 96108350 A EP96108350 A EP 96108350A EP 0745739 B1 EP0745739 B1 EP 0745739B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grip
- block
- borer
- face
- building block
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
- E04B2/28—Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
- E04B2002/0202—Details of connections
- E04B2002/0204—Non-undercut connections, e.g. tongue and groove connections
- E04B2002/0206—Non-undercut connections, e.g. tongue and groove connections of rectangular shape
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
- E04B2002/0202—Details of connections
- E04B2002/0204—Non-undercut connections, e.g. tongue and groove connections
- E04B2002/0228—Non-undercut connections, e.g. tongue and groove connections with tongues next to each other on one end surface and grooves next to each other on opposite end surface
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
- E04B2002/0256—Special features of building elements
- E04B2002/0258—Gripping or handling aids
Definitions
- the invention relates to a method for producing a building block from aerated concrete according to the preamble of claim 1.
- Building blocks made of porous or gas concrete come in the form of so-called bricks, to the extent of the relatively wide or high required for masonry Mortar joints are taken into account, or as so-called plan stones in the trade that be glued together almost seamlessly, so that their external dimensions are somewhat larger than that of the bricks are chosen to match the same wall grid dimensions get.
- plan stones for the face stones, the closer dimensional tolerances than that Have bricks, variants are still known, in their end faces, with to which they are arranged in the wall structure on horizontally next to them, equally trained Connect plan stones, vertically continuous tongue and groove profiles are in order to have an airtight and therefore also good thermal insulation closure to achieve the vertical joints in the wall structure.
- building block used here are all the aforementioned types of aerated concrete stone Roger that. If in the following direction designations “above”, or “horizontally arranged next to it” are used, they refer to always on the installation position of the blocks in the wall structure.
- aerated concrete and “gas concrete” are used synonymously here and are intended to all types of lightweight concrete denote that with the help of a blowing or blowing process and later subsequent Steam pressure hardening can be produced in an autoclave.
- the difficulty arises in that the shape of the grip recesses that arise due to the trajectory within which the milling wire rotates during its rotation narrow limits and is very difficult to design ergonomically can be.
- the invention has for its object a method for manufacturing of building blocks made of aerated concrete and in particular for the training of Grip aid recesses in such building blocks to create that ergonomically favorable design opens up more design options than this is the case with the prior art, and at the same time with inexpensive tools can be used.
- the invention provides that summarized in claim 1 Characteristics before.
- Fig. 1 shows part of a wall structure 1, in which three building blocks in a lower row 3 with their end faces 4 attached to each other are that the groove / formed in these end faces 4 Interlocking spring profiles. In a second, about it lying layer, only one building block 3 is shown, that one of its end faces 4 is visible.
- An engagement groove 10 is between the two springs 6 formed in the end face 4 with such Depths in that the free space 12, that of her and the corresponding engaging groove in the one shown End face 4 adjacent stone is formed, a sufficient internal width W (see also Fig. 2 and 3) owns, which makes it possible from above into the free space 12 reaching deep enough even with a gloved hand that the fingers of this hand also in the lower one formed in the vertical rear wall of the engaging groove 10 Grip aid recesses 14 can be introduced, to raise or lower block 3.
- the block 3 can thus be grasped with both hands and also conveniently arranged next to the wall structure appropriately trained building blocks immediately be positioned in its final position.
- the particular advantage of the horizontal median plane of the module 3 symmetrical arrangement of the handle recesses 14 is that the building block two identical Has installation positions, which are due to a rotation of the block around its horizontal axis by 180 ° get transferred.
- Tongue and groove profiles are designed so that the The end face presented to the neighboring stone is also always there has the same shape when the block is around its vertical central axis is rotated by 180 °.
- the free space 12, of the two mutually adjacent engagement grooves 10 of put together with their end faces Building blocks is formed, preferably with a heat insulating Material filled out in these figures due to an oblique hatching, which means no cut here, is reproduced. It can either be loose granules, especially from aerated concrete or act as a thermal insulation board, the external dimensions of the Internal dimensions of the free space 12 is adjusted so that it can be easily inserted into the top, but largely as far as possible fills out.
- This thermal insulation board can also preferably consist of aerated concrete.
- Fig. 4 shows a broach 18, which is used for production the grip aid troughs 14 is particularly suitable.
- the drill 18 has one cylindrical shaft 19, at the front end of one Cutting helix 20 begins, the diameter of which approximately Height of the handle recesses 14 to be produced corresponds.
- the cutting helix 20 does not only have a front one Cutting edge 21 but also side cutting edges 22, which allow the drill 18 in the not yet hardened AAC material also transversely to its longitudinal axis to move and thereby the horizontal longitudinal extension the recessed grips 14 to work out of the material.
- the Cutting helix 20 is at an angle that is little is less than 90 °, inclined against the longitudinal axis of the drill, in order to achieve the greatest possible clearing effect.
- the drill 18 can be continuous in the longitudinal direction Have bore 23 in the vicinity of the drill tip opens and from behind, i.e. in Fig. 4 of Compressed air can be applied to the right that of the drill 18 from the non-hardened aerated concrete block worked out material from the emerging To be able to convey handle aid recess 14 completely.
- the Cuboid 25 is in a variety of building blocks according to the invention 3 cut so that their end faces 4 in the side surface facing or facing away from the viewer of the cuboid come to rest and the building blocks compared to their installation position in the masonry around their horizontal Longitudinal axis are rotated by 90 °. You can see very clearly the tongue and groove profile formed in the end faces 4, the for example with appropriately shaped wire frame milling cutters is generated, which is lengthwise over the side surface of the cuboid 25 are moved. You can either the cuboid is fixed or is attached to the fixed wire-cutters move.
- the engaging grooves produced in the same way 10 and the grips 14, the be generated with a drill assembly, and preferably twice comprises as many drills as 25 blocks 3 from the cuboid have been cut out. Then these drills are horizontally next to each other perpendicular to the plane of the drawing a corresponding support device arranged.
- the support device is used to form the grip grips 14 set to the appropriate height and then perpendicular to the drawing plane on the cuboid 25 so advanced far until each of the drills one initially circular hole at the desired location from the Cuboid 25 has worked out. Then the carrying device with drills running vertically downwards moved to the elongated hole shape of the grip recesses produce. Is the lower limit of the grip recesses 14 reached, the support device from the cuboid 25th withdrawn quickly and with the help of through the holes 23 injected compressed air in the handle recesses 14 possibly loose material still lying blown out.
- the cuboid can then in the known manner in brought an autoclave and hardened there under steam pressure become.
- the feed rate of the drill when working out of the first circular hole that is the starting base forms for the grip grips 14 is approximately 1 to 3 m per minute at a speed in the range of 150 to 200 revolutions per minute. Even those to work out serving the elongated hole shape of the grip recesses 14, downward displacement of the drill is done with the same speed and the same speed. The extraction can then be carried out much faster become.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Bausteins aus Porenbeton gemäß dem Oberbegriff von Anspruch 1.The invention relates to a method for producing a building block from aerated concrete according to the preamble of claim 1.
Bausteine aus Poren- bzw. Gasbeton kommen in Form von sogenannten Mauersteinen, in deren Maß die beim Vermauern erforderlichen, relativ breiten bzw. hohen Mörtelfugen berücksichtigt sind, oder als sogenannte Plansteine in den Handel, die nahezu fugenlos miteinander verklebt werden, so daß ihre Außenmaße etwas größer als die der Mauersteine gewählt werden, um auf die gleichen Mauer-Rastermaße zu kommen. Bei den Plansteinen, die engere Abmessungstoleranzen als die Mauersteine besitzen, sind weiterhin Varianten bekannt, in deren Stirnflächen, mit denen sie im Mauerverband an horizontal neben ihnen angeordnete, gleich ausgebildete Plansteine anschließen, vertikal durchgehende Nut/Federprofile ausgebildet sind, um einen möglichst luftdichten und damit auch gut wärmedämmenden Verschluß der vertikalen Fugen im Mauergefüge zu erzielen. Dabei können in einer Stirnfläche nur Nuten und in der anderen Stirnfläche nur Federn vorgesehen sein, was zur Folge hat, daß die Steine immer nur in der Weise aneinandergefügt werden können, daß eine Federn-Stirnfläche auf eine Nuten-Stirnfläche trifft und umgekehrt. Alternativ hierzu ist es aber auch möglich, in jeder Stirnfläche Nuten und Federn so anzuordnen, daß jede Stirnfläche zu jeder anderen paßt.Building blocks made of porous or gas concrete come in the form of so-called bricks, to the extent of the relatively wide or high required for masonry Mortar joints are taken into account, or as so-called plan stones in the trade that be glued together almost seamlessly, so that their external dimensions are somewhat larger than that of the bricks are chosen to match the same wall grid dimensions get. For the face stones, the closer dimensional tolerances than that Have bricks, variants are still known, in their end faces, with to which they are arranged in the wall structure on horizontally next to them, equally trained Connect plan stones, vertically continuous tongue and groove profiles are in order to have an airtight and therefore also good thermal insulation closure to achieve the vertical joints in the wall structure. You can in one End face only grooves and in the other end face only springs, which means that the stones are only joined together in this way can that a spring end face meets a groove end face and vice versa. Alternatively, it is also possible to have grooves and tongues in each end face to arrange that each face fits each other.
Unter dem hier verwendeten Begriff "Baustein" werden alle vorgenannten Porenbeton-Steinarten verstanden. Wenn im folgenden Richtungsbezeichnungen "oben", oder "horizontal daneben angeordnet" verwendet werden, so beziehen sich diese immer auf die Einbaulage der Bausteine im Mauerverband. Die Begriffe "Porenbeton" und "Gasbeton" werden hier synonym verwendet und sollen alle Leichtbetonarten bezeichnen, die mit Hilfe eines Treib- bzw. Blähvorganges und später nachfolgender Dampfdruckhärtung in einem Autoklaven hergestellt werden.Under the term "building block" used here are all the aforementioned types of aerated concrete stone Roger that. If in the following direction designations "above", or "horizontally arranged next to it" are used, they refer to always on the installation position of the blocks in the wall structure. The terms "aerated concrete" and "gas concrete" are used synonymously here and are intended to all types of lightweight concrete denote that with the help of a blowing or blowing process and later subsequent Steam pressure hardening can be produced in an autoclave.
Da zur Ermöglichung einer rationellen Verarbeitung von Porenbeton-Bausteinen immer größere Steinformate zum Einsatz kommen ergibt sich bei der Handhabung ein gewisses Problem dadurch, daß Steine, die völlig glatte oder mit vertikal durchgehenden Nut/Feder-Profilen versehene Stirnflächen besitzen, nur sehr schwer mit den Händen ergriffen und getragen werden können. Um hier zu einer Arbeitserleichterung beim Einzeltransport und Vermauern der Steine zu kommen, ist es beispielsweise aus EP 0 204 925 A2 bekannt, in die Stimflächen Griffhilfemulden mit Hilfe rotierender Fräsdrähte einzuarbeiten, was bei einer Vielzahl von Bausteinen, in die ein noch nicht gehärteter Porenbeton-Quader zerschnitten ist, gleichzeitig geschehen kann. As to enable efficient processing of cellular concrete building blocks ever larger stone formats are used, resulting in handling a certain problem in that stones that are completely smooth or with vertical through Tongue and groove profiles have end faces that are very difficult to use can be gripped and carried by the hands. To make work easier here It is, for example, to arrive at individual transport and bricking up the stones known from EP 0 204 925 A2, with grip recesses in the end faces Using rotating milling wires to incorporate what in a variety of building blocks that a not yet hardened aerated concrete cuboid is cut, happen simultaneously can.
Dabei ergibt sich die Schwierigkeit, daß die Form der entstehenden Griffhilfemulden durch die vom Fräsdraht bei seiner Rotation durchlaufene Bewegungsbahn innerhalb enger Grenzen festgelegt ist und nur sehr schwierig ergonomisch günstig gestaltet werden kann.The difficulty arises in that the shape of the grip recesses that arise due to the trajectory within which the milling wire rotates during its rotation narrow limits and is very difficult to design ergonomically can be.
Demgegenüber liegt der Erfindung die Aufgabe zugrunde, ein Verfahren zur Herstellung von Bausteinen aus Porenbeton und insbesondere zur Ausbildung von Griffhilfemulden in solchen Bausteinen zu schaffen, das hinsichtlich einer ergonomisch günstigen Formgebung größere Gestaltungsmöglichkeiten eröffnet, als dies beim Stand der Technik der Fall ist, und bei dem gleichzeitig kostengünstige Werkzeuge zum Einsatz kommen können.In contrast, the invention has for its object a method for manufacturing of building blocks made of aerated concrete and in particular for the training of Grip aid recesses in such building blocks to create that ergonomically favorable design opens up more design options than this is the case with the prior art, and at the same time with inexpensive tools can be used.
Zur Lösung dieser Aufgabe sieht die Erfindung die im Anspruch 1 zusammengefaßten Merkmale vor.To achieve this object, the invention provides that summarized in claim 1 Characteristics before.
Dadurch, daß das Bohren der Griffhilfemulden im noch nicht gehärteten Porenbeton erfolgt, werden die verwendeten Bohrer nur in sehr geringem Maße belastet, so daß sich eine lange Standzeit ergibt.Because the drilling of the grips in the not yet hardened aerated concrete takes place, the drills used are loaded only to a very small extent, so that there is a long service life.
Vorteilhafte Weiterbildungen des erfindungsgemäßen Verfahrens sind in den Unteransprüchen niedergelegt. Advantageous developments of the method according to the invention are in the subclaims laid down.
Die Erfindung wird im folgenden anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnung beschrieben; in dieser zeigen:
- Fig. 1
- in schematischer, perspektivischer Darstellung mehrere, im Mauerverband aneinandergesetzte, erfindungsgemäße Bausteine,
- Fig. 2
- in vergrößertem Maßstab eine Draufsicht auf zwei mit ihren Stirnseiten aneinandergesetzte Bausteine aus Fig. 2,
- Fig. 3
- eine der Fig. 2 entsprechende, jedoch einen anderen Maßstab aufweisende Draufsicht auf eine andere Ausführungsform von zwei aneinandergesetzten erfindungsgemäßen Bausteinen,
- Fig. 4
- in perspektivischer Seitenansicht einen zur Herstellung der erfindungsgemäßen Griffhilfe-mulden geeigneten Bohrer und
- Fig. 5
- eine schematisierte Seiten-Teilansicht eines Porenbeton-Quaders, der vor dem Aushärten zerschnitten und zur Herstellung erfindungsgemäßer Bausteine bearbeitet worden ist.
- Fig. 1
- in a schematic, perspective representation, a plurality of building blocks according to the invention, placed in a wall structure,
- Fig. 2
- FIG. 2 shows a plan view on an enlarged scale of two modules with their end faces attached to one another,
- Fig. 3
- 2 is a plan view corresponding to FIG. 2, but showing a different scale, of another embodiment of two modules according to the invention placed one next to the other,
- Fig. 4
- in perspective side view of a drill suitable for producing the grip aid recesses according to the invention and
- Fig. 5
- a schematic partial side view of a cellular concrete cuboid, which has been cut before curing and processed for the production of building blocks according to the invention.
Fig. 1 zeigt einen Teil eines Mauerverbandes 1, in welchem
drei in einer unteren Reihe liegende Bausteine
3 mit ihren Stirnflächen 4 so aneinander angesetzt
sind, daß die in diesen Stirnflächen 4 ausgebildeten Nut/
Feder-Profile ineinandergreifen. In einer zweiten, darüber
liegenden Schicht ist lediglich ein Baustein 3 so wiedergegeben,
daß die eine seiner Stirnflächen 4 sichtbar ist. Fig. 1 shows part of a wall structure 1, in which
three building blocks in a
Wie Fig. 1 zeigt, sind in dieser Stirnfläche 4 zwei vorspringende
Federn 6 ausgebildet, denen auf der gegenüberliegenden,
in Fig. 1 für diesen Baustein 3 nicht dargestellten
Stirnfläche zwei Nuten 7 entsprechen, in die,
wie man in der unteren Bausteinreihe sieht, die Federn 6
des Nachbarsteins im zusammengefügten Zustand eingreifen.As shown in FIG. 1, there are two projecting parts in this
Zwischen den beiden Federn 6 ist eine Eingriffsnut 10
ausgebildet, die in die Stirnfläche 4 mit einer solchen
Tiefe einspringt, daß der Freiraum 12, der von ihr und
der entsprechenden Eingriffsnut in dem an die gezeigte
Stirnfläche 4 anzusetzenden Nachbarstein gebildet wird,
eine ausreichende lichte Weite W (siehe auch Fig. 2 und 3)
besitzt, die es ermöglicht, von oben her in den Freiraum
12 selbst mit einer behandschuhten Hand so tief hineinzugreifen,
daß die Finger dieser Hand auch in die untere
der in der senkrechten Rückwand der Eingriffsnut 10 ausgebildete
Griffhilfemulden 14 eingeführt werden können,
um den Baustein 3 anzuheben, bzw. abzusetzten. Da auf
der gegenüberliegenden, in der Fig. 1 nicht sichtbaren
Stirnfläche des Bausteins 3 in der dort befindlichen
Eingriffsnut 10 entsprechende Griffhilfemulden ausgebildet
sind, kann somit der Baustein 3 mit beiden Händen erfaßt
und bequem auch neben bereits im Mauerverband angeordneten
entsprechend ausgebildeten Bausteinen sofort in
seiner endgültigen Lage positioniert werden.An
Der besondere Vorteil der zur horizontalen Mittelebene
des Bausteins 3 symmetrischen Anordnung der Griffhilfe-mulden
14 besteht darin, daß der Baustein zwei identische
Einbaulagen besitzt, die sich durch eine Drehung des Bausteins
um seine horizontale Achse um 180° ineinander
überführen lassen. The particular advantage of the horizontal median plane
of the
Anders als in den Figuren dargestellt, können auch die Nut/Feder-Profile so ausgebildet werden, daß die dem Nachbarstein dargebotene Stirnfläche auch dann immer die gleiche Form besitzt, wenn der Baustein um seine vertikale Mittelachse um 180° gedreht wird.Unlike shown in the figures, the Tongue and groove profiles are designed so that the The end face presented to the neighboring stone is also always there has the same shape when the block is around its vertical central axis is rotated by 180 °.
Wie man den Fig. 2 und 3 entnimmt, wird der Freiraum 12,
der von den beiden aneinander angrenzenden Eingriffsnuten
10 von mit ihren Stirnflächen aneinandergesetzten
Bausteinen gebildet wird, vorzugsweise mit einem wärmedämmenden
Material ausgefüllt, das in diesen Figuren
durch eine schräge Schraffur, die hier keinen Schnitt bedeutet,
wiedergegeben ist. Dabei kann es sich entweder
um lockeres Granulat, insbesondere aus Porenbeton oder
eine Wärmedämm-Platte handeln, deren Außenmaß so an die
Innenmaße des Freiraumes 12 angepaßt ist, daß sie von
oben leicht in ihn eingeführt werden kann, ihn aber weitestgehend
ausfüllt. Auch diese Wärmedämm-Platte kann
vorzugsweise aus Porenbeton bestehen.2 and 3, the
Fig. 4 zeigt einen Räum-Bohrer 18, der zur Erzeugung
der Griffhilfe-Mulden 14 besonders geeignet ist. Wie
man der Figur entnimmt, besitzt der Bohrer 18 einen
zylindrischen Schaft 19, an dessen vorderen Ende eine
Schneid-Wendel 20 beginnt, deren Durchmesser in etwa der
Höhe der herzustellenden Griffhilfemulden 14 entspricht.
Die Schneidwendel 20 besitzt nicht nur eine vordere
Schneidkante 21 sondern auch Seitenschneidkanten 22,
die es erlauben, den Bohrer 18 in dem noch nicht gehärteten
Porenbeton-Material auch quer zu seiner Längsachse
zu verschieben und dabei die horizontale Längs-Erstreckung
der Griffmulden 14 aus dem Material herauszuarbeiten. Die
Schneidwendel 20 ist mit einem Winkel, der nur wenig
kleiner als 90° ist, gegen die Bohrer-Längsachse geneigt,
um eine möglichst starke Räumwirkung zu erzielen.Fig. 4 shows a
Außerdem kann der Bohrer 18 eine in Längsrichtung durchgehende
Bohrung 23 aufweisen, die in der Nähe der Bohrerspitze
mündet und von hinten her, d.h. in Fig. 4 von
rechts her mit Druckluft beaufschlagt werden kann, um
das vom Bohrer 18 aus dem nicht gehärteten Porenbeton-Block
herausgearbeitete Material aus der entstehenden
Griffhilfemulde 14 vollständig herausbefördern zu können.In addition, the
In Fig. 5 ist ein Teil eines Porenbeton-Quaders 25 wiedergegeben,
wie er durch das übliche Gießverfahren nach der
Entnahme aus der Gießform und Kippen um 90° entsteht. Der
Quader 25 ist in eine Vielzahl von erfindungsgemäßen Bausteinen
3 so zerschnitten, daß deren Stirnflächen 4 in die
auf den Betrachter zuweisende bzw. von ihm abgewandte Seitenfläche
des Quaders zu liegen kommen und die Bausteine
gegenüber ihrer Einbaulage im Mauerwerk um ihre horizontale
Längsachse um 90° gedreht sind. Man erkennnt sehr deutlich
das in den Stirnflächen 4 ausgebildete Nut-Federprofil, das
beispielsweise mit entsprechend geformten Drahtbügel-Fräsen
erzeugt wird, die der Länge nach über die Seitenfläche
des Quaders 25 bewegt werden. Dabei kann entweder
der Quader feststehen oder sich zu den feststehenden Drahtbügel-Fräsen
bewegen.5 shows part of a
Weiterhin erkennt man die auf gleiche Weise erzeugten Eingriffsnuten
10 und die Griffhilfe-Mulden 14, die
mit einer Bohreranordnung erzeugt werden, und vorzugsweise doppelt
so viele Bohrer umfaßt, wie aus dem Quader 25 Bausteine 3
herausgeschnitten worden sind. Diese Bohrer sind dann
senkrecht zur Zeichenebene horizontal nebeneinander auf
einer entsprechenden Tragvorrichtung angeordnet.Furthermore, one can see the engaging grooves produced in the
Zur Ausbildung der Griffhilfemulden 14 wird die Tragvorrichtung
auf die entsprechende Höhe eingestellt und
dann senkrecht zur Zeichenebene auf den Quader 25 so
weit vorgeschoben, bis jeder der Bohrer ein zunächst
kreisförmiges Loch an der gewünschten Stelle aus dem
Quader 25 herausgearbeitet hat. Hierauf wird die Tragvorrichtung
bei laufenden Bohrern vertikal nach unten
bewegt, um die Langlochform der Griffhilfemulden zu
erzeugen. Ist die untere Begrenzung der Griffhilfemulden
14 erreicht, wird die Tragvorrichtung aus dem Quader 25
rasch zurückgezogen und mit Hilfe der durch die Bohrungen
23 eingeblasenen Preßluft in den Griffhilfemulden 14 eventuell
noch liegendes lockeres Material herausgeblasen.The support device is used to form the
Danach wird die Tragvorrichtung der Bohrer um eine Steinlage
nach unten bewegt, um durch Wiederholung des eben
beschriebenen Vorganges in der zweiten Lage von oben die
Griffhilfemulden 14 auszubilden. Dies wird so lange fortgesetzt,
bis in allen aus dem Quader 25 herausgeschnittenen
Bausteinen 3 die Griffhilfemulden erzeugt sind.Then the carrier device of the drill around a stone layer
moved down by repeating the just
described process in the second layer from
Hierauf kann der Quader dann in der bekannten Weise in einen Autoklaven gebracht und dort unter Dampfdruck gehärtet werden.The cuboid can then in the known manner in brought an autoclave and hardened there under steam pressure become.
Die Vorschubgeschwindigkeit der Bohrer beim Herausarbeiten
des ersten kreisförmigen Loches, das die Ausgangsbasis
für die Griffhilfemulden 14 bildet, beträgt etwa
1 bis 3 m pro Minute bei einer Drehzahl im Bereich von
150 bis 200 Umdrehungen pro Minute. Auch die zum Herausarbeiten
der Langlochform der Griffhilfemulden 14 dienende,
nach unten erfolgende Verschiebung der Bohrer erfolgt mit
der gleichen Geschwindigkeit und der gleichen Drehzahl.
Das Herausziehen kann dann wesentlich schneller durchgeführt
werden.The feed rate of the drill when working out
of the first circular hole that is the starting base
forms for the
Claims (5)
- A process for the production of a building block (3) of porous concrete, whose end faces (4) which in the masonry bond face towards the adjacent blocks arranged horizontally beside the building block have grip-assisting recesses (14) which extend substantially perpendicularly to the respective end face (4) into the building block (3), wherein formation of the grip-assisting recesses (14) is effected simultaneously in regard to a plurality of building blocks (3) into which a porous concrete parallelepipedic block (25) which has not yet hardened is cut, characterised in that the grip-assisting recesses (14) are bored in such a way that the respective borer (18) is displaced substantially perpendicularly to the end face (4) until the desired depth of recess is reached in the direction of the axis of rotation of the borer and is then displaced transversely with respect to its axis of rotation until the desired width of recess is reached and is then quickly withdrawn.
- A process according to claim 1 characterised in that the feed speed of the borer (18) is in the range of 1 m/min to 3 m/min and the speed of rotation of the borer (18) is in the range of 150 rpm to 200 rpm.
- A process according to one of claims 1 and 2 characterised in that borers (18) with a strong broaching action are used for boring the grip-assisting recesses.
- A process according to claim 3 characterised in that borers (18) which produce a side-cutting action upon displacement occurring perpendicularly to the axis of rotation thereof are used for boring the grip-assisting recesses.
- A process according to claim 3 or claim 4 characterised in that borers (18) are used, through the shank (19) of which extends a bore (23) which opens in the region of the borer tip and through which compressed air can be blown out.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19519760A DE19519760C2 (en) | 1995-05-30 | 1995-05-30 | Process for producing a building block from aerated concrete |
DE19519760 | 1995-05-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0745739A1 EP0745739A1 (en) | 1996-12-04 |
EP0745739B1 true EP0745739B1 (en) | 2001-12-05 |
Family
ID=7763196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96108350A Expired - Lifetime EP0745739B1 (en) | 1995-05-30 | 1996-05-24 | Building block of foam mortar |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0745739B1 (en) |
AT (1) | ATE210230T1 (en) |
DE (2) | DE19519760C2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT406879B (en) * | 1998-07-08 | 2000-10-25 | Martin Ing Mag Kasa | BLOCK |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2185669A (en) * | 1939-05-29 | 1940-01-02 | John H Isenhour | Tile |
DE826062C (en) * | 1950-08-20 | 1951-12-27 | Josef Keller | Hollow stone |
DE1609709A1 (en) * | 1967-03-02 | 1969-11-06 | Kalksandsteinwerk Kastendick V | Aerated concrete blocks, in particular milled aerated concrete blocks |
DE7317165U (en) * | 1973-05-08 | 1973-08-30 | Lebherz M | Building block, in particular hollow building block, with handle pockets |
DE2516705A1 (en) * | 1975-04-16 | 1976-10-28 | Muehlacker Ziegelwerk Ag | Easily-handled masonry building block - with recesses in sides forming gripping aids, pref. two on one surface |
DE3520716A1 (en) * | 1985-06-10 | 1986-12-11 | Ytong AG, 8000 München | WALLSTONE |
DE4132809A1 (en) * | 1991-10-02 | 1993-04-22 | Hebel Ag | Device for producing grip pockets in porous concrete blocks - has movable gouging tool and gouging ring whose cover surface runs parallel to tool and is closed by cover |
-
1995
- 1995-05-30 DE DE19519760A patent/DE19519760C2/en not_active Expired - Lifetime
-
1996
- 1996-05-24 AT AT96108350T patent/ATE210230T1/en active
- 1996-05-24 EP EP96108350A patent/EP0745739B1/en not_active Expired - Lifetime
- 1996-05-24 DE DE59608338T patent/DE59608338D1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19519760C2 (en) | 1999-11-11 |
DE59608338D1 (en) | 2002-01-17 |
EP0745739A1 (en) | 1996-12-04 |
DE19519760A1 (en) | 1996-12-05 |
ATE210230T1 (en) | 2001-12-15 |
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