EP3192927B1 - Device and method for producing a filling column - Google Patents

Device and method for producing a filling column Download PDF

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Publication number
EP3192927B1
EP3192927B1 EP16151036.7A EP16151036A EP3192927B1 EP 3192927 B1 EP3192927 B1 EP 3192927B1 EP 16151036 A EP16151036 A EP 16151036A EP 3192927 B1 EP3192927 B1 EP 3192927B1
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EP
European Patent Office
Prior art keywords
filling material
flaps
closing flaps
displacement
displacement tube
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EP16151036.7A
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German (de)
French (fr)
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EP3192927A1 (en
Inventor
Axel Friedrich
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Bauer Spezialtiefbau GmbH
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Bauer Spezialtiefbau GmbH
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Priority to EP16151036.7A priority Critical patent/EP3192927B1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/66—Mould-pipes or other moulds
    • E02D5/665—Mould-pipes or other moulds for making piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles

Definitions

  • the invention relates to a device for producing a filling column from a filling material in the bottom, with a displacement tube, which has a lower outlet opening for the discharge of the filling material, and a closure device, which is arranged at the outlet opening and has two closure flaps, which are pivotable on a common transverse web are hinged between a closed position and an open position, according to the preamble of claim 1.
  • the invention further relates to a method for producing a filling column from a filling material in the bottom, in which a displacement tube with a closing device with two closing flaps is introduced into the bottom, which are in insertion into a closed position and upon reaching a final depth, the closure flaps of the closure position be pivoted into an open position, wherein filling material for forming the Biguttationle is introduced into the soil through an outlet opening, according to the preamble of claim 10.
  • the known filling tube has on its underside a closure device with flaps.
  • the lower outlet opening for the filling material is closed by the closure device.
  • the closure device is opened, so that the filling material can enter through the outlet opening into the cavity created in the ground, wherein the Gregutchule is formed.
  • the closure flaps are pivotally hinged laterally to the pipe base body.
  • the pivot joints are laterally beyond the outer circumference, which is disadvantageous especially for harder soils.
  • radially projecting pivot joints require higher forces to drive the filling tube into the ground and also lead to increased wear of the joints.
  • the articulation on the cylindrical base body is technically complex and leads to a complex shaping of the flaps.
  • a filling tube with a simplified closure flap device is known.
  • the filling tube extends radially through the middle of a pivot axis, to which two flaps are hinged.
  • the flaps extend from the central pivot axis to the pipe base body and are based on this. From a horizontal closure position, the flaps can be pivoted to a downwardly opening position.
  • a comparable device for creating a filling column in the soil goes out of the DE 199 42 016 B4 out.
  • For an improved opening of the flaps these are directed in the closed position obliquely downwards from the central pivot axis.
  • the structure of these filling tubes with a central pivot axis is indeed simplified compared to a lateral linkage.
  • a relatively high expenditure of force is necessary to drive the filling tube into the ground.
  • the known flap valve assemblies are exposed to increased wear.
  • the GB 2311083 A discloses an apparatus and a method for creating a filling column from a filling material in the soil according to the preambles of claims 1 and 9.
  • the invention has for its object to provide an apparatus and a method with which a Greetonic Acid can be efficiently prepared in the ground with a simple structure of the device.
  • these flaps are tip or arrow-shaped to arrange.
  • the pivot axis is in the actual tip area, ie at the lower end of the displacement tube. From the central pivot axis, the two flaps extend obliquely upward. It will create a pile tip with a transverse cutting edge.
  • the device can be introduced into the ground with reduced forces. Compared to a horizontal arrangement of the flaps and a significant reduction in wear is achieved.
  • the flaps can be formed as a simple plate elements.
  • the invention is also based on the recognition that, in spite of this closure flap arrangement, a further good opening of the closure flaps is made possible in the closure position, even if these extend beyond the outer circumference of the displacement tube during the downward pivoting.
  • the pressure of the contents is sufficient to cause a pivoting of the flaps down through the ground.
  • a pivoting of the closure position can be supported in the open position by a pull-up of the positive displacement tube.
  • closure flaps each have a free end which projects radially relative to an outer periphery of the displacement tube.
  • the closing flaps in the surrounding soil can get caught in this way and due to the pulling movement and the filling material present in the displacing tube, the closing flaps are pivoted from the upwardly directed closing position into the opening position.
  • the flaps In the opening position, the flaps are directed downwards and at least as far as folded, that with respect to the surrounding bottom wall, a clearance for the passage of the filling material is released into the displacement hole in the ground.
  • closure flaps can be shaped as desired, in particular an arcuate cross section for forming an at least partially conical tip.
  • a preferred embodiment according to the invention is that the closure flaps are formed as approximately semicircular plates. The flaps can thus be efficiently created from a sheet of suitable thickness, such as a flame cutter.
  • the closure flaps each have at least one annular bearing through which a cylindrical pivot axis of the transverse web extends.
  • the ring bearings can preferably have two narrow rings or one or more bearing sleeves, which are welded to the plate main bodies of the flaps. To form a pivot bearing extending through the ring bearing fitting a cylindrical pivot axis of the crosspiece.
  • the transverse web has at least one strut, which is offset axially relative to the pivot axis.
  • the support strut can be offset axially upwards, so that they during insertion supported in the bottom of the underlying pivot axis and so forms a support strut.
  • the strut may be arranged axially below the pivot axis, so that in this way the pivot axis and the ring bearing of the flaps are protected when introduced into the ground and protected from wear. With this arrangement, the lower end of the strut may be tapered downwardly to further reduce penetration resistance into the ground.
  • the strut may also serve as a stop for limiting the movement of the flaps.
  • closure flaps extend downwardly in the open position.
  • a passage between the flaps and the wall of the Verdhurerloches is released for the passage of the filling material.
  • a filling device for the filling material is provided at the upper end of the displacement tube.
  • the filling device may in particular be a funnel-shaped element. About this can be supplied in the displacement tube and thus the Greincic Acid to be created when pulling the displacer via a feeder resistant filler.
  • the filling device can also be designed so large that it serves as a storage for the entire material to be introduced Gugutmaterial. Via a funnel-shaped region, the filling material can thus be conducted reliably from a storage area into the displacement tube.
  • the invention further comprises a construction machine with a carrier device with a substantially vertical mast, which is characterized in that along the mast, the previously described inventive device for creating a Gregut Vietnamese slidably mounted.
  • the carrier device is a conventional carrier device, which preferably has a crawler undercarriage, on which an upper carriage is rotatably mounted with the mast.
  • a vibrator or a ram is provided for introducing the displacement tube.
  • a vibrator has a so-called Vibrationsbär with rotating imbalance masses, so that the displacer tube can be introduced into the soil by means of vibrations.
  • the displacement tube is driven into the ground by means of striking force application. In principle, however, other types of displacing introduction of the displacement tube can be used in the soil.
  • the closure flaps each have a free end which protrudes radially in the closed position relative to an outer circumference of the displacement tube, and that the closure flaps are pivoted from the closure position into the opening position by pulling the displacement tube upward.
  • An inventive device 10 for creating a Medgut Vietnamese in the ground has an only partially illustrated displacement tube 12.
  • a closure device 20 is arranged at a lower outlet opening of the displacement tube 12.
  • the closure device 20 has two approximately semicircular shaped closure flaps 22, which are welded to bearing rings 24. With the bearing rings 24 the closure flaps 22 are hinged in each case to a cylindrical pivot axis 42 of a transverse web 40 hinged.
  • the transverse web 40 with the pivot axis 42 extends centrally and radially transversely at the lower end of the displacement tube 12.
  • Fig. 1 the closure device 20 is shown in the closed position, in which the two flaps 22 extend obliquely upwards and rest against the lower edge of the displacement tube 12.
  • the two closing flaps 22 are at an angle of approximately 90 ° to one another and in this case have a length with which the closing flaps 22 extend radially outwards over the outer circumference of the displacing tube 12.
  • the respective free ends 23 of the flaps 22 project barb-like upwards.
  • the arrow-shaped closing flaps 22 with the transverse web 40 arranged at the bottom form a downwardly tapering positive-displacement tip 30. This permits easier introduction into the floor to be displaced.
  • Fig. 1 is also shown by a dashed line an intermediate position of the closure flap 22, in which the closure flaps 22 are folded by upward from the top by the displacement tube 12 nachdrteilendes filling material and by a pulling movement of the displacement tube 12 upwards in an open position.
  • the opening position is in Fig. 1 indicated only schematically with a single dot-dash line.
  • Fig. 2 the opening position is shown with obliquely downwardly flapped shutters 22.
  • the closure flaps 22 are limited in their lower cone-shaped opening position by two lateral lower struts 46, which serve as a lower stop.
  • filling material can be introduced from the displacement tube 12 via the outlet opening 14 during retraction of the device 10 from a displacement bore in this.
  • a plate-shaped upper strut 44 For stiffening the pivot axis 42, the cross bar 40 in the illustrated embodiment, a plate-shaped upper strut 44.
  • the plate-shaped upper strut 44 is provided in the region of the ring bearing 24 with recesses 45, wherein intermediate webs rest against the pivot axis 42 and stiffen them against a deflection upwards.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Erstellen einer Füllgutsäule aus einem Füllmaterial im Boden, mit einem Verdrängerrohr, welches eine untere Austrittsöffnung zum Austreten des Füllmateriales aufweist, und einer Verschlusseinrichtung, welche an der Austrittsöffnung angeordnet ist und zwei Verschlussklappen aufweist, welche an einem gemeinsamen Quersteg verschwenkbar zwischen einer Verschlussposition und einer Öffnungsposition angelenkt sind, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for producing a filling column from a filling material in the bottom, with a displacement tube, which has a lower outlet opening for the discharge of the filling material, and a closure device, which is arranged at the outlet opening and has two closure flaps, which are pivotable on a common transverse web are hinged between a closed position and an open position, according to the preamble of claim 1.

Die Erfindung betrifft weiterhin ein Verfahren zum Herstellen einer Füllgutsäule aus einem Füllmaterial im Boden, bei dem in den Boden ein Verdrängerrohr mit einer Verschlusseinrichtung mit zwei Verschlussklappen eingebracht wird, welches sich beim Einbringen in eine Verschlussposition befinden und bei Erreichen einer Endtiefe die Verschlussklappen von der Verschlussposition in eine Öffnungsposition verschwenkt werden, wobei durch eine Austrittsöffnung Füllmaterial zum Bilden der Füllgutsäule in den Boden eingebracht wird, gemäß dem Oberbegriff des Anspruchs 10.The invention further relates to a method for producing a filling column from a filling material in the bottom, in which a displacement tube with a closing device with two closing flaps is introduced into the bottom, which are in insertion into a closed position and upon reaching a final depth, the closure flaps of the closure position be pivoted into an open position, wherein filling material for forming the Füllgutsäule is introduced into the soil through an outlet opening, according to the preamble of claim 10.

Aus der DE 103 10 727 B4 gehen ein Füllrohr und ein Verfahren zum Erstellen einer Füllgutsäule im Boden hervor. Das Füllrohr wird in einen weichen, verdrängbaren Boden eingetrieben. Über das Füllrohr können beispielsweise Beton, Kalk, Kies, Sand, Schotter oder Trockenmörtel in den Boden eingebracht werden. Dabei werden im Wesentlichen vertikale Füllgutsäulen hergestellt, durch welche der Baugrund stabilisiert und ertüchtigt wird. Diese Säulen erstrecken sich üblicherweise auf eine tragfähige Bodenschicht, welche höhere Vertikalkräfte aufnehmen kann. Die Füllgutsäulen können für eine Bauwerksgründung eingesetzt werden.From the DE 103 10 727 B4 A filling tube and a method for creating a filling column in the ground emerge. The filling tube is driven into a soft, displaceable floor. For example, concrete, lime, gravel, sand, gravel or dry mortar can be introduced into the soil via the filling pipe. In this case, essentially vertical Füllgutsäulen be prepared by which the ground is stabilized and upgraded. These columns usually extend to a viable one Soil layer, which can absorb higher vertical forces. The Füllgutsäulen can be used for a building foundation.

Das bekannte Füllrohr weist an seiner Unterseite eine Verschlusseinrichtung mit Verschlussklappen auf. Beim Eintreiben des Füllrohres ist durch die Verschlusseinrichtung die untere Austrittsöffnung für das Füllgut verschlossen. Beim Ziehen des Füllrohres wird die Verschlusseinrichtung aufgeklappt, so dass das Füllgut durch die Austrittsöffnung in den erstellten Hohlraum in den Boden eintreten kann, wobei die Füllgutsäule gebildet wird. Mit diesem bekannten Füllrohr können Füllgutsäulen effizient erstellt werden.The known filling tube has on its underside a closure device with flaps. When driving the filling tube, the lower outlet opening for the filling material is closed by the closure device. When pulling the filling tube, the closure device is opened, so that the filling material can enter through the outlet opening into the cavity created in the ground, wherein the Füllgutsäule is formed. With this known filling tube Füllgutsäulen can be efficiently created.

Bei diesem bekannten Füllrohr sind die Verschlussklappen seitlich an dem Rohrgrundkörper schwenkbar angelenkt. Dabei stehen die Schwenkgelenke seitlich über den Außenumfang vor, was insbesondere bei härteren Böden nachteilig ist. So bedingen radial vorstehende Schwenkgelenke höhere Kräfte zum Eintreiben des Füllrohres in den Boden und führen zudem zu einem verstärkten Verschleiß der Gelenke. Auch ist die Anlenkung am zylindrischen Grundkörper fertigungstechnisch aufwändig und führt zu einer komplexen Formgebung der Verschlussklappen.In this known filling tube, the closure flaps are pivotally hinged laterally to the pipe base body. The pivot joints are laterally beyond the outer circumference, which is disadvantageous especially for harder soils. Thus, radially projecting pivot joints require higher forces to drive the filling tube into the ground and also lead to increased wear of the joints. Also, the articulation on the cylindrical base body is technically complex and leads to a complex shaping of the flaps.

Aus der gattungsgemäßen DE 1 863 183 U1 ist ein Füllrohr mit einer vereinfachten Verschlussklappeneinrichtung bekannt. Hierzu erstreckt sich am unteren Ende des Füllrohres radial durch die Mitte eine Schwenkachse, an welcher zwei Verschlussklappen angelenkt sind. Die Verschlussklappen erstrecken sich von der mittigen Schwenkachse zum Rohrgrundkörper und stützen sich auf diesen ab. Von einer horizontalen Verschlussposition können die Verschlussklappen in eine nach unten gerichtete Öffnungsposition verschwenkt werden.From the generic DE 1 863 183 U1 For example, a filling tube with a simplified closure flap device is known. For this purpose, at the lower end of the filling tube extends radially through the middle of a pivot axis, to which two flaps are hinged. The flaps extend from the central pivot axis to the pipe base body and are based on this. From a horizontal closure position, the flaps can be pivoted to a downwardly opening position.

Eine vergleichbare Vorrichtung zum Erstellen einer Füllgutsäule im Boden geht aus der DE 199 42 016 B4 hervor. Für ein verbessertes Öffnen der Verschlussklappen sind diese in der Verschlussposition von der mittigen Schwenkachse schräg nach unten gerichtet.A comparable device for creating a filling column in the soil goes out of the DE 199 42 016 B4 out. For an improved opening of the flaps these are directed in the closed position obliquely downwards from the central pivot axis.

Der Aufbau dieser Füllrohre mit einer mittigen Schwenkachse ist zwar gegenüber einer seitlichen Anlenkung vereinfacht. Allerdings ist bei diesen bekannten Füllrohren ein relativ hoher Kraftaufwand notwendig, um das Füllrohr in den Boden einzutreiben. Zudem sind die bekannten Verschlussklappenanordnungen einem erhöhten Verschleiß ausgesetzt. Die GB 2311083 A offenbart eine Vorrichtung und ein Verfahren zum Erstellen einer Füllgutsäule aus einem Füllmaterial im Boden gemäß den Oberbegriffen der Ansprüche 1 und 9.The structure of these filling tubes with a central pivot axis is indeed simplified compared to a lateral linkage. However, in these known filling tubes, a relatively high expenditure of force is necessary to drive the filling tube into the ground. In addition, the known flap valve assemblies are exposed to increased wear. The GB 2311083 A discloses an apparatus and a method for creating a filling column from a filling material in the soil according to the preambles of claims 1 and 9.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung und ein Verfahren anzugeben, mit welchen eine Füllgutsäule im Boden bei einem einfachen Aufbau der Vorrichtung effizient hergestellt werden können.The invention has for its object to provide an apparatus and a method with which a Füllgutsäule can be efficiently prepared in the ground with a simple structure of the device.

Die Aufgabe wird zum einen durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 und zum anderen mit einem Verfahren mit den Merkmalen des Anspruchs 9 gelöst. Bevorzugte Ausführungsformen der Erfindung sind in den jeweils abhängigen Ansprüchen angegeben.The object is achieved on the one hand by a device having the features of claim 1 and on the other hand by a method having the features of claim 9. Preferred embodiments of the invention are specified in the respective dependent claims.

Basierend auf dem Grundprinzip der mittigen Anlenkung der Verschlussklappen, sind diese spitzen- oder pfeilförmig anzuordnen. Dabei befindet sich die Schwenkachse im eigentlichen Spitzenbereich, also am unteren Ende des Verdrängerrohres. Von der mittigen Schwenkachse aus erstrecken sich die beiden Verschlussklappen schräg nach oben. Es wird so eine Pfahlspitze mit einer quer verlaufenden Schneidkante erstellt.Based on the basic principle of the central articulation of the flaps, these are tip or arrow-shaped to arrange. In this case, the pivot axis is in the actual tip area, ie at the lower end of the displacement tube. From the central pivot axis, the two flaps extend obliquely upward. It will create a pile tip with a transverse cutting edge.

Aufgrund dieser Spitze oder Verjüngung ist die Vorrichtung mit verringerten Kräften in den Boden einbringbar. Gegenüber einer horizontalen Anordnung der Verschlussklappen wird auch eine erhebliche Verschleißreduzierung erreicht. Zudem können die Verschlussklappen als einfache Plattenelemente ausgebildet werden.Due to this tip or taper, the device can be introduced into the ground with reduced forces. Compared to a horizontal arrangement of the flaps and a significant reduction in wear is achieved. In addition, the flaps can be formed as a simple plate elements.

Die Erfindung beruht dabei auch auf der Erkenntnis, dass trotz dieser Verschlussklappenanordnung in der Verschlussposition ein weiterhin gutes Öffnen der Verschlussklappen ermöglicht ist, auch wenn sich diese beim nach-unten-Schwenken über den Außenumfang des Verdrängerrohres hinaus erstrecken. Bei den üblichen relativ weichen Böden, bei welchen diese Verdrängervorrichtungen zum Einsatz kommen, ist der Druck des Füllgutes ausreichend, ein Verschwenken der Verschlussklappen nach unten durch den Boden zu bewirken. Gegebenenfalls kann ein Aufschwenken der Verschlussposition in die Öffnungsposition durch ein nach-oben-Ziehen des Verdrängerrohres unterstützt werden.The invention is also based on the recognition that, in spite of this closure flap arrangement, a further good opening of the closure flaps is made possible in the closure position, even if these extend beyond the outer circumference of the displacement tube during the downward pivoting. In the usual relatively soft soils in which these Verdrängervorrichtungen used come, the pressure of the contents is sufficient to cause a pivoting of the flaps down through the ground. Optionally, a pivoting of the closure position can be supported in the open position by a pull-up of the positive displacement tube.

Ein besonders gutes nach-unten-Schwenken der Verschlussklappen wird erfindungsgemäß dadurch erreicht, dass die Verschlussklappen jeweils ein freies Ende aufweisen, welches radial gegenüber einem Außenumfang des Verdrängerrohres vorspringt. Bei einem nach-oben-Ziehen der Vorrichtung können sich so die Verschlussklappen im umgebenden Boden verhaken und durch die Ziehbewegung und das im Verdrängerrohr anstehende Füllmaterial werden die Verschlussklappen aus der nach oben gerichteten Verschlussposition in die Öffnungsposition verschwenkt. In der Öffnungsposition sind die Verschlussklappen nach unten gerichtet und zumindest soweit eingeklappt, dass gegenüber der umgebenden Bodenwand ein Freiraum zum Durchgang des Füllmateriales in das Verdrängerloch im Boden freigegeben ist.A particularly good downward pivoting of the flaps is inventively achieved in that the closure flaps each have a free end which projects radially relative to an outer periphery of the displacement tube. When the device is pulled upwards, the closing flaps in the surrounding soil can get caught in this way and due to the pulling movement and the filling material present in the displacing tube, the closing flaps are pivoted from the upwardly directed closing position into the opening position. In the opening position, the flaps are directed downwards and at least as far as folded, that with respect to the surrounding bottom wall, a clearance for the passage of the filling material is released into the displacement hole in the ground.

Grundsätzlich können die Verschlussklappen beliebig geformt sein, insbesondere einen bogenförmigen Querschnitt zum Bilden einer zumindest teilweisen konusförmigen Spitze. Eine bevorzugte Ausführungsform besteht nach der Erfindung jedoch darin, dass die Verschlussklappen als etwa halbkreisförmige Platten ausgebildet sind. Die Verschlussklappen können so in effizienter Weise aus einem Blech mit einer geeigneten Stärke, etwa mittels eines Brennschneiders, erstellt werden.In principle, the closure flaps can be shaped as desired, in particular an arcuate cross section for forming an at least partially conical tip. A preferred embodiment according to the invention, however, is that the closure flaps are formed as approximately semicircular plates. The flaps can thus be efficiently created from a sheet of suitable thickness, such as a flame cutter.

Gemäß einer weiteren Ausführungsvariante der Erfindung ist es bevorzugt, dass die Verschlussklappen jeweils mindestens ein Ringlager aufweisen, durch welche sich eine zylindrische Schwenkachse des Querstegs erstreckt. Die Ringlager können dabei vorzugsweise zwei schmale Ringe oder eine oder mehrere Lagerhülsen aufweisen, welche an den Plattengrundkörpern der Verschlussklappen angeschweißt sind. Zum Bilden eines Schwenklagers erstreckt sich durch das Ringlager passend eine zylindrische Schwenkachse des Querstegs.According to a further embodiment variant of the invention, it is preferred that the closure flaps each have at least one annular bearing through which a cylindrical pivot axis of the transverse web extends. The ring bearings can preferably have two narrow rings or one or more bearing sleeves, which are welded to the plate main bodies of the flaps. To form a pivot bearing extending through the ring bearing fitting a cylindrical pivot axis of the crosspiece.

Eine vorteilhafte Weiterbildung der Erfindung ergibt sich dadurch, dass der Quersteg mindestens eine Strebe aufweist, die gegenüber der Schwenkachse axial versetzt ist. Die Stützstrebe kann dabei axial nach oben versetzt sein, so dass sie beim Einbringen in den Boden die untenliegende Schwenkachse abstützt und so eine Stützstrebe bildet. Alternativ oder ergänzend kann die Strebe axial unterhalb der Schwenkachse angeordnet sein, so dass hierdurch die Schwenkachse und die Ringlager der Verschlussklappen beim Einbringen in den Boden geschützt und vor Verschleiß geschont werden. Bei dieser Anordnung kann das untere Ende der Strebe nach unten verjüngend ausgebildet sein, um einen Eindringwiderstand in den Boden weiter zu reduzieren. Die Strebe kann auch als ein Anschlag zum Begrenzen der Bewegung der Verschlussklappen dienen.An advantageous development of the invention results from the fact that the transverse web has at least one strut, which is offset axially relative to the pivot axis. The support strut can be offset axially upwards, so that they during insertion supported in the bottom of the underlying pivot axis and so forms a support strut. Alternatively or additionally, the strut may be arranged axially below the pivot axis, so that in this way the pivot axis and the ring bearing of the flaps are protected when introduced into the ground and protected from wear. With this arrangement, the lower end of the strut may be tapered downwardly to further reduce penetration resistance into the ground. The strut may also serve as a stop for limiting the movement of the flaps.

Gemäß einer weiteren Ausführungsform der Erfindung ist es bevorzugt, dass sich die Verschlussklappen in der Öffnungsposition nach unten erstrecken. Vorzugsweise wird dabei ein Durchgang zwischen den Verschlussklappen und der Wand des Verdängerloches für den Durchgang des Füllmaterials freigegeben.According to a further embodiment of the invention, it is preferred that the closure flaps extend downwardly in the open position. Preferably, a passage between the flaps and the wall of the Verdängerloches is released for the passage of the filling material.

Für ein effizientes Erstellen einer Füllgutsäule im Boden ist es nach einer Ausführungsvariante der Erfindung vorteilhaft, dass am oberen Ende des Verdrängerrohres eine Einfülleinrichtung für das Füllmaterial vorgesehen ist. Die Einfülleinrichtung kann insbesondere ein trichterförmiges Element sein. Über dieses kann beim Ziehen des Verdrängerrohres über eine Zuführeinrichtung beständig Füllmaterial im Verdrängerrohr und damit der zu erstellenden Füllgutsäule zugeführt werden. Dabei kann die Einfülleinrichtung auch so groß ausgestaltet sein, dass diese als ein Speicher für das einzubringende Füllgutmaterial insgesamt dient. Über einen trichterförmigen Bereich kann so das Füllmaterial zuverlässig aus einem Speicherbereich in das Verdrängerrohr geleitet werden.For an efficient production of a filling column in the bottom, it is advantageous according to an embodiment variant of the invention that a filling device for the filling material is provided at the upper end of the displacement tube. The filling device may in particular be a funnel-shaped element. About this can be supplied in the displacement tube and thus the Füllgutsäule to be created when pulling the displacer via a feeder resistant filler. In this case, the filling device can also be designed so large that it serves as a storage for the entire material to be introduced Füllgutmaterial. Via a funnel-shaped region, the filling material can thus be conducted reliably from a storage area into the displacement tube.

Die Erfindung umfasst weiterhin eine Baumaschine mit einem Trägergerät mit einem im Wesentlichen vertikalen Mast, welcher dadurch gekennzeichnet ist, dass entlang dem Mast die zuvor beschriebene erfindungsgemäße Vorrichtung zum Erstellen einer Füllgutsäule verschiebbar gelagert ist. Das Trägergerät ist dabei ein übliches Trägergerät, welches vorzugsweise ein Raupenfahrwerk als Unterwagen aufweist, auf welchem drehbar ein Oberwagen mit dem Mast gelagert ist.The invention further comprises a construction machine with a carrier device with a substantially vertical mast, which is characterized in that along the mast, the previously described inventive device for creating a Füllgutsäule is slidably mounted. The carrier device is a conventional carrier device, which preferably has a crawler undercarriage, on which an upper carriage is rotatably mounted with the mast.

Nach einer Weiterbildung der Erfindung ist es bevorzugt, dass ein Rüttler oder eine Ramme zum Einbringen des Verdrängerrohres vorgesehen ist. Ein Rüttler weist dabei einen sogenannten Vibrationsbär mit rotierenden Unwuchtmassen auf, so dass das Verdrängerrohr mittels Schwingungen in den Boden einbringbar ist. Bei einer Ramme, welche insbesondere ein Dieselhammer sein kann, wird mittels schlagender Kraftaufbringung das Verdrängerrohr in den Boden eingetrieben. Grundsätzlich können jedoch auch andere Arten des verdrängenden Einbringens des Verdrängerrohres in den Boden eingesetzt werden.According to a development of the invention, it is preferred that a vibrator or a ram is provided for introducing the displacement tube. A vibrator has a so-called Vibrationsbär with rotating imbalance masses, so that the displacer tube can be introduced into the soil by means of vibrations. In a ram, which may in particular be a diesel hammer, the displacement tube is driven into the ground by means of striking force application. In principle, however, other types of displacing introduction of the displacement tube can be used in the soil.

Mit diesem Verfahren wird die eingangs genannte Aufgabe erfindungsgemäß durch die Verwendung der zuvor beschriebenen erfindungsgemäßen Vorrichtung oder der zuvor beschriebenen Baumaschine gelöst.With this method, the object mentioned is achieved according to the invention by the use of the device according to the invention described above or the construction machine described above.

Erfindungsgemäß ist es vorgesehen, dass die Verschlussklappen jeweils ein freies Ende aufweisen, welches in der Verschlussposition radial gegenüber einem Außenumfang des Verdrängerrohrs vorspringt, und dass durch ein nach-oben-Ziehen des Verdrängerrohrs die Verschlussklappen von der Verschlussposition in die Öffnungsposition geschwenkt werden. Mit dem erfindungsgemäßen Verfahren kann eine zuverlässige Öffnung der Verschlusseinrichtung erzielt werden. Hierdurch können Füllgutsäulen im Boden nach der Erfindung besonders zuverlässig und effizient erstellt werden. Die nach der Erfindung erstellten Füllgutsäulen können zur Baugrundertüchtigung oder zur Gründung eines Bauwerks vorgesehen sein.According to the invention, it is provided that the closure flaps each have a free end which protrudes radially in the closed position relative to an outer circumference of the displacement tube, and that the closure flaps are pivoted from the closure position into the opening position by pulling the displacement tube upward. With the method according to the invention, a reliable opening of the closure device can be achieved. As a result, Füllgutsäulen can be created particularly reliable and efficient in the soil according to the invention. The Füllgutsäulen created according to the invention may be provided for ground upgrading or founding of a building.

Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispiels weiter beschrieben, welches in den beigefügten Zeichnungen schematisch dargestellt ist. In den Zeichnungen zeigen:

Fig. 1 :
eine Querschnittsansicht eines unteren Bereiches einer erfindungsgemäßen Vorrichtung; und
Fig. 2 :
eine geschnittene Seitenansicht der Vorrichtung von Fig. 1.
The invention will be further described with reference to a preferred embodiment, which is shown schematically in the accompanying drawings. In the drawings show:
Fig. 1:
a cross-sectional view of a lower portion of a device according to the invention; and
Fig. 2:
a sectional side view of the device of Fig. 1 ,

Eine erfindungsgemäße Vorrichtung 10 zum Erstellen einer Füllgutsäule im Boden weist ein nur teilweise dargestelltes Verdrängerrohr 12 auf. An einer unteren Austrittsöffnung des Verdrängerrohres 12 ist eine Verschlusseinrichtung 20 angeordnet. Die Verschlusseinrichtung 20 weist zwei etwa halbkreisförmig gestaltete Verschlussklappen 22 auf, welche mit Lagerringen 24 verschweißt sind. Mit den Lagerringen 24 sind die Verschlussklappen 22 jeweils an einer zylindrischen Schwenkachse 42 eines Querstegs 40 klappbar angelenkt. Der Quersteg 40 mit der Schwenkachse 42 erstreckt sich mittig und radial quer am unteren Ende des Verdrängerrohres 12.An inventive device 10 for creating a Füllgutsäule in the ground has an only partially illustrated displacement tube 12. At a lower outlet opening of the displacement tube 12, a closure device 20 is arranged. The closure device 20 has two approximately semicircular shaped closure flaps 22, which are welded to bearing rings 24. With the bearing rings 24 the closure flaps 22 are hinged in each case to a cylindrical pivot axis 42 of a transverse web 40 hinged. The transverse web 40 with the pivot axis 42 extends centrally and radially transversely at the lower end of the displacement tube 12.

In Fig. 1 ist die Verschlusseinrichtung 20 in der Verschlussposition dargestellt, in welcher die beiden Verschlussklappen 22 sich schräg nach oben erstrecken und am unteren Rand des Verdrängerrohres 12 anliegen. Die beiden Verschlussklappen 22 weisen einen Winkel von etwa 90° zueinander auf und besitzen dabei eine Länge, mit der sich die Verschlussklappen 22 über den Außenumfang des Verdrängerrohrs 12 radial nach außen erstrecken. Die jeweiligen freien Enden 23 der Verschlussklappen 22 stehen widerhakenartig nach oben vor. In dieser dargestellten Verschlussposition bilden die pfeilförmig angestellten Verschlussklappen 22 mit dem unten angeordneten Quersteg 40 eine sich nach unten verjüngende Verdrängerspitze 30. Diese erlaubt ein leichteres Einbringen in den zu verdrängenden Boden.In Fig. 1 the closure device 20 is shown in the closed position, in which the two flaps 22 extend obliquely upwards and rest against the lower edge of the displacement tube 12. The two closing flaps 22 are at an angle of approximately 90 ° to one another and in this case have a length with which the closing flaps 22 extend radially outwards over the outer circumference of the displacing tube 12. The respective free ends 23 of the flaps 22 project barb-like upwards. In this illustrated closure position, the arrow-shaped closing flaps 22 with the transverse web 40 arranged at the bottom form a downwardly tapering positive-displacement tip 30. This permits easier introduction into the floor to be displaced.

In Fig. 1 ist weiterhin durch eine Strichpunktlinie eine Zwischenposition der Verschlussklappen 22 dargestellt, bei welcher die Verschlussklappen 22 durch von oben durch das Verdrängerrohr 12 nachdrängendes Füllmaterial und durch eine Ziehbewegung des Verdrängerrohrs 12 nach oben in eine Öffnungsposition nach unten geklappt werden. Die Öffnungsposition ist in Fig. 1 nur schematisch mit einer einzelnen Strichpunktlinie angedeutet.In Fig. 1 is also shown by a dashed line an intermediate position of the closure flap 22, in which the closure flaps 22 are folded by upward from the top by the displacement tube 12 nachdrängendes filling material and by a pulling movement of the displacement tube 12 upwards in an open position. The opening position is in Fig. 1 indicated only schematically with a single dot-dash line.

In Fig. 2 ist die Öffnungsposition mit schräg nach unten geklappten Verschlussklappen 22 dargestellt. Die Verschlussklappen 22 werden dabei in ihrer unteren konusförmigen Öffnungsposition durch zwei seitliche untere Streben 46 begrenzt, welche als ein unterer Anschlag dienen. In dieser Öffnungsposition kann Füllmaterial aus dem Verdrängerrohr 12 über die Austrittsöffnung 14 beim Rückziehen der Vorrichtung 10 aus einer Verdrängerbohrung in diese eingeleitet werden.In Fig. 2 the opening position is shown with obliquely downwardly flapped shutters 22. The closure flaps 22 are limited in their lower cone-shaped opening position by two lateral lower struts 46, which serve as a lower stop. In this opening position, filling material can be introduced from the displacement tube 12 via the outlet opening 14 during retraction of the device 10 from a displacement bore in this.

Zur Versteifung der Schwenkachse 42 weist der Quersteg 40 in der dargestellten Ausführungsform eine plattenförmige obere Strebe 44 auf. Die plattenförmige obere Strebe 44 ist im Bereich der Ringlager 24 mit Ausnehmungen 45 versehen, wobei Zwischenstege an der Schwenkachse 42 anliegen und diese gegen eine Ausbiegung nach oben versteifen.For stiffening the pivot axis 42, the cross bar 40 in the illustrated embodiment, a plate-shaped upper strut 44. The plate-shaped upper strut 44 is provided in the region of the ring bearing 24 with recesses 45, wherein intermediate webs rest against the pivot axis 42 and stiffen them against a deflection upwards.

Claims (9)

  1. Device for producing a filling material column of a filling material in the ground, having
    - a displacement tube (12) which has a lower discharge opening (14) for the discharge of the filling material, and
    - a closing means (20) which is arranged on the discharge opening (14) and has two closing flaps (22) that are linked to a joint cross bar (40) by being pivotable between a closed position and an open position,
    - wherein the lower end of the displacement tube (12) with the closing means (20) is designed as a downward tapering displacement tip (30),
    - wherein the cross bar (40) is arranged in a lower acute region of the displacement tip (30) and extends centrally and transversely in the displacement tube (12) and
    - wherein in the closed position the closing flaps (22) extend upwards at an angle from the cross bar (40) in order to form the displacement tip (30),
    characterized in that the closing flaps (22) each have a free end (23) which, in the upward-directed closed position, projects radially with respect to an outer circumference of the displacement tube (12).
  2. Device according to claim 1,
    characterized in that
    the closing flaps (22) are designed as approximately semicircular plates.
  3. Device according to any one of claims 1 to 2,
    characterized in that
    the closing flaps (22) each have at least one ring bearing (24), through which a cylindrical pivot axis (42) of the cross bar (40) extends.
  4. Device according to claim 3,
    characterized in that
    the cross bar (40) has at least one strut (44, 46) which is axially offset with respect to the pivot axis (42).
  5. Device according to any one of claims 1 to 4,
    characterized in that
    in the open position the closing flaps (22) extend downwards.
  6. Device according to any one of claims 1 to 5,
    characterized in that
    on the upper end of the displacement tube (12) a filling means for the filling material is provided.
  7. Construction machine having a carrier implement with a substantially vertical mast,
    characterized in that
    along the mast a device (10) according to any one of claims 1 to 7 is supported in a displaceable manner.
  8. Construction machine according to claim 7,
    characterized in that
    a vibrator or a pile driver is provided for introducing the displacement tube (12).
  9. Method for producing a filling material column of a filling material in the ground, in which
    - a displacement tube (12) having a closing means (20) with two closing flaps (22) is introduced into the ground, the said closing flaps being located in a closed position during introduction, and
    - on reaching a final depth the closing flaps (22) are pivoted from the closed position into an open position, wherein filling material is introduced through a discharge opening (14) into the ground in order to form the filling material column,
    wherein a device (10) according to any one of claims 1 to 6 or a construction machine according to claim 7 or 8 is used,
    characterized in that
    the closing flaps (22) each have a free end (23) which, in the closed position, projects radially with respect to an outer circumference of the displacement tube (12), and in that by pulling the displacement tube (12) upwards the closing flaps (22) are pivoted from the closed position into the open position.
EP16151036.7A 2016-01-13 2016-01-13 Device and method for producing a filling column Active EP3192927B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16151036.7A EP3192927B1 (en) 2016-01-13 2016-01-13 Device and method for producing a filling column

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16151036.7A EP3192927B1 (en) 2016-01-13 2016-01-13 Device and method for producing a filling column

Publications (2)

Publication Number Publication Date
EP3192927A1 EP3192927A1 (en) 2017-07-19
EP3192927B1 true EP3192927B1 (en) 2019-04-24

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ID=55168146

Family Applications (1)

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EP16151036.7A Active EP3192927B1 (en) 2016-01-13 2016-01-13 Device and method for producing a filling column

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EP (1) EP3192927B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4063565A1 (en) 2021-03-24 2022-09-28 BAUER Spezialtiefbau GmbH Construction machine, displacement tube and method for creating a filler column in the soil

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1863183U (en) 1962-09-20 1962-11-29 Friedrich Kuemmel DEVICE USED TO MAKE A LOCAL POST FROM SAND.
NL1002618C2 (en) * 1996-03-15 1997-09-17 Dredging Int Method and device for placing a column of supporting material in the ground.
DE19942016B4 (en) 1999-09-03 2006-01-05 Franki Grundbau Gmbh Apparatus and method for producing a soil column of viable granular filler material
DE10310727B4 (en) 2003-03-12 2007-09-13 Bauer Spezialtiefbau Gmbh filling pipe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4063565A1 (en) 2021-03-24 2022-09-28 BAUER Spezialtiefbau GmbH Construction machine, displacement tube and method for creating a filler column in the soil
WO2022200096A1 (en) 2021-03-24 2022-09-29 Bauer Spezialtiefbau Gmbh Construction machine, displacement pipe, and method for producing a filling material column in the ground

Also Published As

Publication number Publication date
EP3192927A1 (en) 2017-07-19

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