EP1081329B1 - Auger wiper - Google Patents

Auger wiper Download PDF

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Publication number
EP1081329B1
EP1081329B1 EP00114457A EP00114457A EP1081329B1 EP 1081329 B1 EP1081329 B1 EP 1081329B1 EP 00114457 A EP00114457 A EP 00114457A EP 00114457 A EP00114457 A EP 00114457A EP 1081329 B1 EP1081329 B1 EP 1081329B1
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EP
European Patent Office
Prior art keywords
auger
cleaning element
cleaning
wiper according
holder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00114457A
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German (de)
French (fr)
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EP1081329A1 (en
Inventor
Werner Dipl.-Ing. Fh Harthauser
Leonhard Dipl.-Ing. Fh Weixler
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Bauer Maschinen GmbH
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Bauer Maschinen GmbH
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Filing date
Publication date
Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Publication of EP1081329A1 publication Critical patent/EP1081329A1/en
Application granted granted Critical
Publication of EP1081329B1 publication Critical patent/EP1081329B1/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B12/00Accessories for drilling tools
    • E21B12/06Mechanical cleaning devices

Definitions

  • the invention relates to a screw cleaner for a auger of a drilling device for earth bores, which is mounted on a mast of the drilling device and has a cleaning member for engaging in a spiral space of the auger.
  • US 3,968,846 describes a screw cleaner for removing drilling material from the spiral space of a screw auger of a drilling device for earth bores.
  • the screw cleaner has a wheel with radially protruding finger-shaped areas which successively engage in the spiral space between the auger and remove drilling material.
  • the wheel is mounted next to the auger and rotates around an axis that is perpendicular to the longitudinal axis of the auger. Rotation and feed movement of the auger causes the wheel to rotate, so that the finger-shaped areas engage one after the other in the spiral space between the auger.
  • the invention has for its object to provide a screw cleaner of the type mentioned, which is simple to use with a simple structure and at the same time offers reliable and improved cleaning.
  • the cleaning member is rotatably mounted on a cleaning member holder of the screw cleaner and is rotated in its cleaning engagement by the driven auger around its bearing axis, and that the cleaning member holder is mounted on a mast guide mounted on the mast is pivotally mounted and can be pivoted in and out of the spiral space by a drive device for pivoting the cleaning member in and out.
  • the cleaning element is thus always rotated by the auger around its axis of rotation into the correct position, in which the largest possible cross-sectional area of the spiral space is covered for cleaning and removing stuck earth material.
  • the driving in and out of the screw cleaner by means of a drive device is a significant simplification of operation in a rough working environment on a construction site.
  • At least one second cleaning member is attached to the cleaning member holder in an arrangement connected in series and adapted to the auger, which further improves the cleaning result.
  • the first cleaning member serves as a pre-cutter for stuck material and the second cleaning member serves as a clearer.
  • each cleaning member is rotatably mounted on its own bearing axis on the cleaning member holder.
  • the second cleaning member on the cleaning member holder can also be arranged offset to the first cleaning member. It is advantageous if at least one of the cleaning members is arranged to be adjustable on the cleaning member holder.
  • a longitudinal adjustment of one of the cleaning members, in particular along the cleaning member holder can be carried out. It is expedient that a longitudinal adjustment can be carried out by moving the bearing axis of one of the cleaning members on the cleaning member holder into one of several transverse bores formed along the holder.
  • the operation of the screw cleaner is considerably easier if the drive device can be operated remotely, in particular from a driver's cab of the drilling rig.
  • the drive device has a hydraulic piston-cylinder drive which connects the cleaning member holder of the screw cleaner and the mast guide to one another.
  • the mast guide is slidably mounted on the mast.
  • the at least one cleaning member has a disk-shaped engagement area which is in sliding contact on its outer circumference with at least one of the two screw blades delimiting the space between the helix. With a corresponding design, this can completely cover the spiral gap and can be guided by the two screw blades delimiting the spiral gap taking into account a play.
  • the disk-shaped cleaning member expediently contains at least two cleaning sheets with a rounded outer circumference, and in particular the disk-shaped cleaning member is formed in a cloverleaf shape with four cleaning sheets.
  • the engagement of the second cleaning member in the auger is optimized when it is at a certain angle is pivoted with respect to the drill axis to the first cleaning member so that the planes of rotation of the two cleaning members intersect on the side of the cleaning member holder facing the auger, in particular in a parallel to the drill axis.
  • the swivel-in path of the auger cleaner can be easily adapted for different augers with different drill core diameters.
  • a drilling tool 1 of a drilling device for producing pile bores and the like in a building ground contains a cylindrical drill core 2 or core tube with a helically rotating auger 3 (see FIG. 1).
  • a screw cleaner 4 is attached and mounted on a mast (not shown) carrying the drilling tool 1 by means of a mast guide 5.
  • the screw cleaner 4 contains a first and a second disk-shaped cleaning member 6 and 7 for engaging in a spiral space 8 between two adjacent screw blades 9 and 10 of the auger 3.
  • the two cleaning members 6 and 7 have four identical cleaning blades 11 and 12, one have rounded outer circumference 13 and 14 and each by one from the outer circumference 13 and 14 forth recess 15 and 16 are separated.
  • the two cleaning members 6 and 7 are rotatably supported on bearing axles 17 and 18 (see FIGS. 2 and 3) of a cleaning member holder 19 by roller bearings.
  • the bearing axis 17 of the first cleaning member 6 is fixedly mounted in the holder 19 in a first bore 20.
  • the cleaning member holder 19 contains z. B. four further bores 21, in which the bearing axis 18 of the second cleaning member 7 optionally used and z. B. can be fixed by means of a screw flange connection 22.
  • the bearing axis 18 of the second cleaning member 7 is angled towards the auger 3 (see FIG.
  • the cleaning member holder 19 is fastened to the mast guide 5 on a bolt 23 so as to be pivotable about a pivot axis 24 (see FIGS. 1 and 3).
  • a hydraulic piston-cylinder unit 25 is connected on the one hand to a joint 26 on the mast guide 5 and on the other hand via a joint 27 to a lateral extension 28 of the holder 19 and can pivot the holder 19 and thus the cleaning members 6 by extending or retracting its piston rod 29 , 7 and move into and out of the spiral space 8.
  • the piston-cylinder unit 25 is actuated e.g. B. by remote control from a cab of the drill.
  • the hydraulic piston-cylinder unit 25 is actuated so that its extending piston rod 29 pivots the holder 19 from a disengaged position (not shown) into the engagement position shown, the cleaning members 6, 7 engaging in the auger 3. Since the cleaning members 6, 7 are freely rotatable, a respective cleaning sheet 11 or 12 of the two cleaning members 6, 7 will always turn into the spiral space 8 between the two adjacent screw blades 9 and 10, which in turn engage in the recesses 15, 16 can and can roll or slide on the side edges 30 of the recesses 15, 16 and on the outer circumference 13 or 14.
  • the individual cleaning blades 11 and 12 of the rotating cleaning members 6, 7 roll with their outer circumferences 13 and 14 and the Side edges 30 of the recesses 15 on the screw blades 11 and 12 and remove the soil material stuck in the auger 3.
  • the first cleaning member 6 serves as a pre-cutter and the second cleaning member 7 as a re-cleaner.
  • the two cleaning elements 6 and 7 ensure that at least one cleaning blade 11 and 12 of the cleaning elements 6 and 7 always fills the predominant cross-sectional portion of the spiral space 8 for removing soil material stuck therein when the auger 3 is rotated, so that cleaning that is as complete as possible is achieved becomes.
  • the screw cleaner 4 is pivoted out of the auger 3 again by the hydraulic piston-cylinder unit 25.
  • an adjustable end stop 31 can be provided for the hydraulic piston-cylinder unit 25 in order to be able to adapt the pivoting path to different diameters of the drill core 2 in the case of differently designed drilling tools 1.
  • the planes of rotation of the cleaning members 6, 7 expediently do not run through the drill axis 32, but they can be offset from the direction of rotation (see FIG. 2), so that the disk-shaped cleaning members 6, 7 are arranged at a shallower angle to the drill core 2 and thus can better scrape the soil material out of the spiral space 8 via its engaging surfaces 33 and 34 and lead it out (the discharge path is shown schematically in FIG. 2 by arrows A and B for the first and second cleaning members 6 and 7, respectively).
  • At least one further cleaning element for example an upstream tearing tool with protruding rods, can be attached to the screw cleaner 4.
  • solidified soil material can be torn open and loosened.
  • the disk-shaped cleaning members 6, 7 can be fastened to a bearing flange 35 of the bearing axes 17 and 18 with screws and can thus be quickly replaced.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Description

Die Erfindung betrifft einen Schneckenputzer für eine Bohrschnecke eines Bohrgeräts für Erdbohrungen, der an einem Mast des Bohrgeräts gelagert ist und ein Reinigungsorgan zum Eingriff in einen Wendelzwischenraum der Bohrschnecke aufweist.The invention relates to a screw cleaner for a auger of a drilling device for earth bores, which is mounted on a mast of the drilling device and has a cleaning member for engaging in a spiral space of the auger.

Aus der DE-OS 34 46 902 ist ein Schneckenputzer mit einer Reinigungsklappe bekannt geworden, die bei Bedarf in einen Wendelzwischenraum zwischen zwei benachbarten Seitenwänden der Bohrschnecke manuell eingeschwenkt wird. Nach dem Einlegen der Reinigungsklappe schraubt sich der Schneckenputzer, der gemeinsam mit der Bohrschnecke an einem Bohrmast geführt ist, infolge der Drehung der Bohrschnecke an dieser entlang bis zu ihrem oberen Ende. Durch Umkehren der Drehrichtung der Bohrschnecke bewegt sich der Schneckenputzer in entgegengesetzter Richtung. Ist der Wendelzwischenraum gereinigt, so wird der Schneckenputzer wieder aus dem Eingriff mit der Bohrschnecke genommen, um.nicht gegen einen Anschlag an seiner Führung am Bohrmast festgeklemmt zu werden. Das Herausnehmen des Schneckenputzers aus dem Eingriffsbereich erfolgt wiederum manuell.From DE-OS 34 46 902 a screw cleaner with a cleaning flap has become known, which is manually pivoted into a spiral space between two adjacent side walls of the auger if necessary. After inserting the cleaning flap, the auger cleaner, which is guided together with the auger on a drilling mast, screws itself along the auger as a result of the rotation of the auger up to its upper end. By reversing the direction of rotation of the auger, the auger cleaner moves in the opposite direction. Once the spiral space has been cleaned, the auger cleaner is removed from engagement with the auger in order not to be clamped against a stop on its guide on the drilling mast. The screw cleaner is again removed manually from the engagement area.

Die US 3,968,846 beschreibt einen Schneckenputzer zum Herauslösen von Bohrmaterial aus dem Wendelzwischenraum einer Bohrschnecke eines Bohrgerätes für Erdbohrungen. Der Schneckenputzer weist als Reinigungsorgan ein Rad mit radial herausragenden fingerförmigen Bereichen auf, die aufeinander folgend in den Wendelzwischenraum der Bohrschnecke eingreifen und Bohrmaterial entfernen. Das Rad ist neben der Bohrschnecke angebracht und rotiert um eine Achse, die auf der Längsachse der Bohrschnecke senkrecht steht. Durch Rotations- und Vorschubbewegung der Bohrschnecke wird eine Rotation des Rades bewirkt, so dass die fingerförmigen Bereiche nacheinander in den Wendelzwischenraum der Bohrschnecke eingreifen.US 3,968,846 describes a screw cleaner for removing drilling material from the spiral space of a screw auger of a drilling device for earth bores. As a cleaning member, the screw cleaner has a wheel with radially protruding finger-shaped areas which successively engage in the spiral space between the auger and remove drilling material. The wheel is mounted next to the auger and rotates around an axis that is perpendicular to the longitudinal axis of the auger. Rotation and feed movement of the auger causes the wheel to rotate, so that the finger-shaped areas engage one after the other in the spiral space between the auger.

Der Erfindung liegt die Aufgabe zugrunde, einen Schneckenputzer der eingangs genannten Art anzugeben, der bei einfachem Aufbau einfach zu bedienen ist und gleichzeitig eine zuverlässige und verbesserte Reinigung bietet.The invention has for its object to provide a screw cleaner of the type mentioned, which is simple to use with a simple structure and at the same time offers reliable and improved cleaning.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass bei dem genannten Schneckenputzer das Reinigungsorgan an einer Reinigungsorgan-Halterung des Schneckenputzers drehbar gelagert ist und in seinem Putzeingriff von der angetriebenen Bohrerschnecke um seine Lagerachse gedreht wird, und dass die Reinigungsorgan-Halterung an einer am Mast gelagerten Mastführung schwenkbar gelagert und durch eine Antriebseinrichtung zum Ein- und Ausschwenken des Reinigungsorgans in den und aus dem Wendelzwischenraum ein- bzw. ausschwenkbar ist. Bei diesem Schneckenputzer wird somit das Reinigungsorgan stets durch die Bohrschnecke um seine Drehachse in die korrekte Position gedreht, in der eine möglichst große Querschnittsfläche des Wendelzwischenraumes zum Putzen und Entfernen von festhängendem Erdmaterial abgedeckt ist. Des weiteren ist das Ein- und Ausfahren des Schneckenputzers durch eine Antriebseinrichtung eine wesentliche Bedienungserleichterung in einer rauhen Arbeitsumgebung auf einer Baustelle.The object is achieved in that in the screw cleaner mentioned, the cleaning member is rotatably mounted on a cleaning member holder of the screw cleaner and is rotated in its cleaning engagement by the driven auger around its bearing axis, and that the cleaning member holder is mounted on a mast guide mounted on the mast is pivotally mounted and can be pivoted in and out of the spiral space by a drive device for pivoting the cleaning member in and out. With this auger cleaner, the cleaning element is thus always rotated by the auger around its axis of rotation into the correct position, in which the largest possible cross-sectional area of the spiral space is covered for cleaning and removing stuck earth material. Furthermore, the driving in and out of the screw cleaner by means of a drive device is a significant simplification of operation in a rough working environment on a construction site.

Erfindungsgemäß ist zumindest ein zweites Reinigungsorgan in hintereinander geschalteter und an die Bohrschnecke angepasster Anordnung an der Reinigungsorgan-Halterung angebracht, wodurch das Reinigungsergebnis weiter verbessert wird.Das erste Reinigungsorgan dient als Vorschneider für festsitzendes Material und das zweite Reinigungsorgan dient als Nachräumer.According to the invention, at least one second cleaning member is attached to the cleaning member holder in an arrangement connected in series and adapted to the auger, which further improves the cleaning result. The first cleaning member serves as a pre-cutter for stuck material and the second cleaning member serves as a clearer.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the subclaims.

Für die aufeinander abgestimmte Anpassung der Reinigungsorgane ist es zweckmäßig, wenn jedes Reinigungsorgan auf einer eigenen Lagerachse an der Reinigungsorgan-Halterung drehbar gelagert ist. Dann kann auch für eine optimierte Anpassung das zweite Reinigungsorgan an der Reinigungsorgan-Halterung zum ersten Reinigungsorgan versetzt angeordnet sein. Dabei ist es vorteilhaft, wenn zumindest eines der Reinigungsorgane an der Reinigungsorgan-Halterung verstellbar angeordnet ist.For the coordinated adaptation of the cleaning members, it is expedient if each cleaning member is rotatably mounted on its own bearing axis on the cleaning member holder. Then, for an optimized adaptation, the second cleaning member on the cleaning member holder can also be arranged offset to the first cleaning member. It is advantageous if at least one of the cleaning members is arranged to be adjustable on the cleaning member holder.

Zur Anpassung der Reinigungsorgans an die Bohrerschnecke kann eine Längsverstellung eines der Reinigungsorgane insbesondere entlang der Reinigungsorgan-Halterung erfolgen. Dabei ist es zweckmäßig, daß eine Längsverstellung durch Umsetzen der Lagerachse eines der Reinigungsorgane an der Reinigungsorgan-Halterung in eine von mehreren entlang der Halterung ausgebildeten Querbohrungen vorgenommen werden kann.In order to adapt the cleaning member to the auger, a longitudinal adjustment of one of the cleaning members, in particular along the cleaning member holder, can be carried out. It is expedient that a longitudinal adjustment can be carried out by moving the bearing axis of one of the cleaning members on the cleaning member holder into one of several transverse bores formed along the holder.

Eine wesentliche Erleichterung der Bedienung des Schneckenputzers ergibt sich, wenn die Antriebseinrichtung insbesondere von einem Führerhaus des Bohrgerätes fernbedienbar ist.The operation of the screw cleaner is considerably easier if the drive device can be operated remotely, in particular from a driver's cab of the drilling rig.

In einer bevorzugten Anordnung weist die Antriebseinrichtung einen hydraulischen Kolben-Zylinderantrieb auf, der die Reinigungsorgan-Halterung des Schneckenputzers und die Mastführung miteinander verbindet.In a preferred arrangement, the drive device has a hydraulic piston-cylinder drive which connects the cleaning member holder of the screw cleaner and the mast guide to one another.

Zur Anpassung und Einstellung des Schneckenputzers an die Bohrerschnecke ist es zweckmäßig, wenn die Mastführung am Mast verschiebbar gelagert ist.To adapt and adjust the auger cleaner to the auger, it is useful if the mast guide is slidably mounted on the mast.

In einer bevorzugten Ausgestaltung weist das zumindest eine Reinigungsorgan einen scheibenförmigen Eingriffsbereich auf, der an seinem Außenumfang in Gleitkontakt mit zumindest einem der beiden den Wendelzwischenraum begrenzenden Schneckenblätter ist. Bei einer entsprechenden Gestaltung kann dieser gänzlich den Wendelzwischenraum abdecken und unter Berücksichtigung eines Spiels von den beiden den Wendelzwischenraum begrenzenden Schneckenblätter geführt werden.In a preferred embodiment, the at least one cleaning member has a disk-shaped engagement area which is in sliding contact on its outer circumference with at least one of the two screw blades delimiting the space between the helix. With a corresponding design, this can completely cover the spiral gap and can be guided by the two screw blades delimiting the spiral gap taking into account a play.

Zweckmäßigerweise enthält das scheibenförmig gebildete Reinigungsorgan zumindest zwei Reinigungsblätter mit einem abgerundeten Außenumfang und insbesondere ist das scheibenförmige Reinigungsorgan kleeblattförmig mit vier Reinigungsblättern gebildet.The disk-shaped cleaning member expediently contains at least two cleaning sheets with a rounded outer circumference, and in particular the disk-shaped cleaning member is formed in a cloverleaf shape with four cleaning sheets.

Der Eingriff des zweiten Reinigungsorgans in die Bohrerschnecke ist optimiert, wenn es um einen bestimmten Winkel bezüglich der Bohrerachse zu dem ersten Reinigungsorgan verschwenkt angeordnet ist, so daß sich die Drehebenen der beiden Reinigungsorgane auf der der Bohrerschnecke zugewandten Seite der Reinigungsorgan-Halterung schneiden, insbesondere in einer Parallelen zur Bohrerachse.The engagement of the second cleaning member in the auger is optimized when it is at a certain angle is pivoted with respect to the drill axis to the first cleaning member so that the planes of rotation of the two cleaning members intersect on the side of the cleaning member holder facing the auger, in particular in a parallel to the drill axis.

Wenn ein einstellbarer Endanschlag vorgesehen ist, der den Bewegungsweg des Hydraulikkolbens in Richtung zur Bohrerschnecke begrenzt, kann der Einschwenkweg des Schneckenputzers bei verschiedenen Bohrerschnecken mit unterschiedlichen Bohrerseelendurchmessern leicht angepaßt werden.If an adjustable end stop is provided, which limits the movement path of the hydraulic piston in the direction of the auger, the swivel-in path of the auger cleaner can be easily adapted for different augers with different drill core diameters.

Nachfolgend wird die Erfindung anhand eines Ausführungsbeispiels eines erfindungsgemäßen Schneckenputzers unter Bezugnahme auf Zeichnungen näher erläutert. Es zeigt:

Fig. 1:
in einer seitlichen Draufsicht eine Bohrschnecke mit einem Schneckenputzer;
Fig. 2:
in einer axialen Draufsicht die Bohrschnecke mit dem Schneckenputzer; und
Fig. 3:
in einer Schnittansicht den Schneckenputzer gemäß den Schnitten A - A in den Fig. 1 und 2.
The invention is explained in more detail below using an exemplary embodiment of a screw cleaner according to the invention with reference to drawings. It shows:
Fig. 1:
a side view of a auger with a screw cleaner;
Fig. 2:
in an axial top view the auger with the auger cleaner; and
Fig. 3:
in a sectional view the screw cleaner according to the sections A - A in FIGS. 1 and 2.

Ein Bohrwerkzeug 1 eines nicht dargestellten Bohrgeräts zum Herstellen von Pfahlbohrungen und dgl. in einem Baugrund enthält einen zylindrischen Bohrerkern 2 oder Seelenrohr mit einer wendelförmig umlaufenden Bohrerschnecke 3 (siehe Fig. 1). Ein Schneckenputzer 4 ist an einem das Bohrwerkzeug 1 tragenden Mast (nicht dargestellt) mittels einer Mastführung 5 angebracht und gelagert. Der Schneckenputzer 4 enthält ein erstes und ein zweites scheibenförmiges Reinigungsorgan 6 bzw. 7 zum Eingreifen in einen Wendelzwischenraum 8 zwischen zwei benachbarte Schneckenblätter 9 und 10 der Bohrerschnecke 3. Die beiden Reinigungsorgane 6 und 7 weisen vier gleiche Reinigungsblätter 11 bzw. 12 auf, die einen abgerundeten Außenumfang 13 bzw. 14 aufweisen und jeweils durch eine vom Außenumfang 13 bzw. 14 her vertiefte Ausnehmung 15 bzw. 16 getrennt sind. Die beiden Reinigungsorgane 6 und 7 sind auf Lagerachsen 17 und 18 (siehe Fig. 2 und 3) einer Reinigungsorgan-Halterung 19 durch Rollenlager drehbar gelagert. Die Lagerachse 17 des ersten Reinigungsorgans 6 ist in einer ersten Bohrung 20 in der Halterung 19 fest angebracht. Oberhalb dieser Bohrung 20 enthält die Reinigungsorgan-Halterung 19 z. B. vier weitere Bohrungen 21, in denen die Lagerachse 18 des zweiten Reinigungsorgans 7 wahlweise eingesetzt und z. B. mittels einer Schraubflanschverbindung 22 festlegbar ist. Die Lagerachse 18 des zweiten Reinigungsorgans 7 ist derart zur Bohrerschnecke 3 hin abgewinkelt (siehe Fig. 2), daß sich in der dargestellten Eingriffsstellung des Schneckenputzers 4 die Drehebenen der Reinigungsorgane 6 und 7 auf der der Bohrerschnecke 3 zugewandten Seite der Halterung 19 schneiden und die Reinigungsorgane 6 und 7 mit ihren Außenumfängen 13 bzw. 14 bis nahe an den Bohrerkern 2 reichen. Dabei stehen die beiden Lagerachsen 17 und 18 auf entgegengesetzten Seiten der Halterung 19 hervor, so daß auch die beiden Reinigungsorgane 6 und 7 an der Halterung 19 in etwa gegenüberliegend angeordnet sind. Die wahlweise Festlegung der Lagerachse 18 des zweiten Reinigungsorgans 7 erfolgt in Abhängigkeit von der Steigung der zu putzenden Bohrerschnecke 3. Daher ist dieser Schneckenputzer 4 an Bohrschnecken mit unterschiedlichen Steigungen leicht anpaßbar.A drilling tool 1 of a drilling device (not shown) for producing pile bores and the like in a building ground contains a cylindrical drill core 2 or core tube with a helically rotating auger 3 (see FIG. 1). A screw cleaner 4 is attached and mounted on a mast (not shown) carrying the drilling tool 1 by means of a mast guide 5. The screw cleaner 4 contains a first and a second disk-shaped cleaning member 6 and 7 for engaging in a spiral space 8 between two adjacent screw blades 9 and 10 of the auger 3. The two cleaning members 6 and 7 have four identical cleaning blades 11 and 12, one have rounded outer circumference 13 and 14 and each by one from the outer circumference 13 and 14 forth recess 15 and 16 are separated. The two cleaning members 6 and 7 are rotatably supported on bearing axles 17 and 18 (see FIGS. 2 and 3) of a cleaning member holder 19 by roller bearings. The bearing axis 17 of the first cleaning member 6 is fixedly mounted in the holder 19 in a first bore 20. Above this bore 20, the cleaning member holder 19 contains z. B. four further bores 21, in which the bearing axis 18 of the second cleaning member 7 optionally used and z. B. can be fixed by means of a screw flange connection 22. The bearing axis 18 of the second cleaning member 7 is angled towards the auger 3 (see FIG. 2) that in the illustrated engagement position of the auger cleaner 4 the planes of rotation of the cleaning members 6 and 7 on the side of the holder 19 facing the auger 3 intersect and the Cleaning organs 6 and 7 with their outer circumferences 13 and 14 extend close to the drill core 2. The two bearing axes 17 and 18 protrude on opposite sides of the holder 19, so that the two cleaning members 6 and 7 on the holder 19 are arranged approximately opposite one another. The optional determination of the bearing axis 18 of the second cleaning member 7 takes place as a function of the pitch of the auger 3 to be cleaned. This auger cleaner 4 is therefore easily adaptable to augers with different pitches.

Die Reinigungsorgan-Halterung 19 ist an der Mastführung 5 an einem Bolzen 23 um eine Schwenkachse 24 schwenkbar befestigt (siehe Fig. 1 und 3). Ein hydraulische Kolben-Zylindereinheit 25 ist einerseits mit einem Gelenk 26 an der Mastführung 5 und andererseits über ein Gelenk 27 mit einem seitlichen Ansatz 28 der Halterung 19 verbunden und kann durch Aus- oder Einfahren seiner Kolbenstange 29 die Halterung 19 verschwenken und somit die Reinigungsorgane 6, 7 und in den Wendelzwischenraum 8 einfahren bzw. daraus herausfahren. Die Betätigung der Kolben-Zylindereinheit 25 erfolgt z. B. mittels Fernbedienung von einem Fahrerhaus des Bohrgeräts aus.The cleaning member holder 19 is fastened to the mast guide 5 on a bolt 23 so as to be pivotable about a pivot axis 24 (see FIGS. 1 and 3). A hydraulic piston-cylinder unit 25 is connected on the one hand to a joint 26 on the mast guide 5 and on the other hand via a joint 27 to a lateral extension 28 of the holder 19 and can pivot the holder 19 and thus the cleaning members 6 by extending or retracting its piston rod 29 , 7 and move into and out of the spiral space 8. The piston-cylinder unit 25 is actuated e.g. B. by remote control from a cab of the drill.

Zum Reinigen der Bohrerschnecke 3 wird die hydraulische Kolben-Zylindereinheit 25 betätigt, so daß ihre ausfahrende Kolbenstange 29 die Halterung 19 aus einer nicht dargestellten Außereingriffstellung in die dargestellte Eingriffsstellung verschwenkt, wobei die Reinigungsorgane 6, 7 in die Bohrerschnecke 3 eingreifen. Da die Reinigungsorgane 6, 7 frei drehbar gelagert sind, wird sich stets ein jeweiliges Reinigungsblatt 11 bzw. 12 der beiden Reinigungsorgane 6, 7 in den Wendelzwischenraum 8 zwischen die zwei benachbarten Schnekkenblätter 9 und 10 hineindrehen, die wiederum in die Ausnehmungen 15, 16 eingreifen können und dabei an den Seitenrändern 30 der Ausnehmungen 15, 16 und am Außenumfang 13 bzw. 14 abwälzen oder gleiten können.To clean the auger 3, the hydraulic piston-cylinder unit 25 is actuated so that its extending piston rod 29 pivots the holder 19 from a disengaged position (not shown) into the engagement position shown, the cleaning members 6, 7 engaging in the auger 3. Since the cleaning members 6, 7 are freely rotatable, a respective cleaning sheet 11 or 12 of the two cleaning members 6, 7 will always turn into the spiral space 8 between the two adjacent screw blades 9 and 10, which in turn engage in the recesses 15, 16 can and can roll or slide on the side edges 30 of the recesses 15, 16 and on the outer circumference 13 or 14.

Durch Drehen des Bohrwerkzeugs 1 (im Uhrzeigersinn in Fig. 2) und durch relatives axiales Verschieben des Bohrwerkzeugs 1 gegenüber dem Schneckenputzer 4 wälzen sich die einzelnen Reinigungsblätter 11 bzw. 12 der sich drehenden Reinigungsorgane 6, 7 mit ihren Außenumfängen 13 bzw. 14 und den Seitenrändern 30 der Ausnehmungen 15 an den Schneckenblättern 11 und 12 ab und entfernen dabei das in der Bohrerschnecke 3 festsitzende Bodenmaterial. Das erste Reinigungsorgan 6 dient als Vorschneider und das zweite Reinigungsorgan 7 als Nachräumer. Durch die beiden Reinigungsorgane 6 und 7 ist gewährleistet, daß immer mindestens ein Reinigungsblatt 11 und 12 der Reinigungsorgane 6 bzw. 7 beim Drehen der Bohrerschnecke 3 den überwiegenden Querschnittsanteil des Wendelzwischenraumes 8 zum Entfernen von darin festsitzendem Bodenmaterial ausfüllt, so daß eine möglichst vollständige Reinigung erzielt wird. Nach Beendigung der Reinigung wird der Schneckenputzer 4 wieder durch die hydraulische Kolben-Zylindereinheit 25 aus der Bohrerschnecke 3 herausgeschwenkt. Zum Begrenzen des Einschwenkweges des Schneckenputzers 4 kann ein einstellbarer Endanschlag 31 für die hydraulische Kolben-Zylindereinheit 25 vorgesehen sein, um den Schwenkweg an unterschiedliche Durchmesser des Bohrerkerns 2 bei unterschiedlich gestalteten Bohrwerkzeugen 1 anpassen zu können.By turning the drilling tool 1 (clockwise in Fig. 2) and by relative axial displacement of the drilling tool 1 relative to the screw cleaner 4, the individual cleaning blades 11 and 12 of the rotating cleaning members 6, 7 roll with their outer circumferences 13 and 14 and the Side edges 30 of the recesses 15 on the screw blades 11 and 12 and remove the soil material stuck in the auger 3. The first cleaning member 6 serves as a pre-cutter and the second cleaning member 7 as a re-cleaner. The two cleaning elements 6 and 7 ensure that at least one cleaning blade 11 and 12 of the cleaning elements 6 and 7 always fills the predominant cross-sectional portion of the spiral space 8 for removing soil material stuck therein when the auger 3 is rotated, so that cleaning that is as complete as possible is achieved becomes. After cleaning has been completed, the screw cleaner 4 is pivoted out of the auger 3 again by the hydraulic piston-cylinder unit 25. To limit the pivoting-in path of the screw cleaner 4, an adjustable end stop 31 can be provided for the hydraulic piston-cylinder unit 25 in order to be able to adapt the pivoting path to different diameters of the drill core 2 in the case of differently designed drilling tools 1.

Die Drehebenen der Reinigungsorgane 6, 7 verlaufen zweckmäßigerweise nicht durch die Bohrerachse 32, sondern sie können gegen die Drehrichtung vorversetzt sein (siehe Fig. 2), so daß die scheibenförmigen Reinigungsorgane 6, 7 unter einem flacheren Winkel zu dem Bohrerkern 2 angeordnet sind und damit das Bodenmaterial aus dem Wendelzwischenraum 8 über ihre Eingriffsflächen 33 und 34 besser herausschaben und herausführen können (der Abführweg ist in Fig. 2 schematisch durch die Pfeile A und B für das erste bzw. das zweite Reinigungsorgan 6 bzw. 7 dargestellt).The planes of rotation of the cleaning members 6, 7 expediently do not run through the drill axis 32, but they can be offset from the direction of rotation (see FIG. 2), so that the disk-shaped cleaning members 6, 7 are arranged at a shallower angle to the drill core 2 and thus can better scrape the soil material out of the spiral space 8 via its engaging surfaces 33 and 34 and lead it out (the discharge path is shown schematically in FIG. 2 by arrows A and B for the first and second cleaning members 6 and 7, respectively).

Bei einer verlängerten Ausführung der Halterung 19 kann am Schneckenputzer 4 noch zumindest ein weiteres Reinigungsorgan, etwa ein vorgeschaltetes Reißwerkzeug mit abstehenden Stäben, angebracht sein. Durch dieses kann verfestigtes Bodenmaterial aufgerissen und gelockert werden.In the case of an extended version of the holder 19, at least one further cleaning element, for example an upstream tearing tool with protruding rods, can be attached to the screw cleaner 4. Through this, solidified soil material can be torn open and loosened.

Die scheibenförmigen Reinigungsorgane 6, 7 können an einem Lagerflansch 35 der Lagerachsen 17 und 18 mit Schrauben befestigt und somit schnell austauschbar sein.The disk-shaped cleaning members 6, 7 can be fastened to a bearing flange 35 of the bearing axes 17 and 18 with screws and can thus be quickly replaced.

Claims (14)

  1. Auger wiper (4) for an auger drill (3) of a drilling device for soil drillings, which is supported on a mast of the drilling device and has a cleaning element (6) for a wiping engagement into a flight interspace (8) of the auger drill (3), wherein the cleaning element (6) is rotatably supported on a cleaning element holder (19) of the auger wiper (4), and in its wiping engagement is rotated about its longitudinal axis (17) by the driven auger drill (3), and wherein the cleaning element holder (19) is pivotally supported on a mast guide (5) which is itself supported on the mast and said cleaning element holder (19) can be pivoted inwards or outwards by means of a driving device (25) for pivoting the cleaning element (6) into and out of the flight interspace (8)
    characterized in that
    on the cleaning element holder (19) at least a second cleaning element (7) is arranged offset from the first cleaning element (6).
  2. Auger wiper according to claim 1,
    characterized in that
    the second cleaning element (7) is mounted on the cleaning element holder (19) in a successive configuration arranged in a line and adapted to the auger drill (3)
  3. Auger wiper according to claim 1 or 2,
    characterized in that
    each cleaning element (6, 7) is rotatably mounted on its own supporting axis (17 or 18) on the cleaning element holder (19).
  4. Auger wiper according to any one of claims 1 to 3,
       characterized in that
    at least one of the cleaning elements (6, 7) is adjustably arranged on the cleaning element holder (19).
  5. Auger wiper according to claim 4,
    characterized in that
    a longitudinal adjustment of one of the cleaning elements (6, 7) is effected along the cleaning element holder (19).
  6. Auger wiper according to claim 4 or 5,
    characterized in that
    a longitudinal adjustment is effected by shifting the supporting axis (17, 18) of one of the cleaning elements (6, 7) on the cleaning element holder (19) into one of a plurality of transverse bore holes (21) designed along the length of the holder (19).
  7. Auger wiper according to any one of claims 1 to 6,
    characterized in that
    the driving device (25) can be remote-controlled in particular from a driver's cab of the drilling device.
  8. Auger wiper according to any one of claims 1 to 7,
    characterized in that
    the driving device has a hydraulic piston-cylinder drive (25) which connects the cleaning element holder (19) of the auger wiper (4) and the mast guide (5) with each other.
  9. Auger wiper according to any one of claims 1 to 8,
    characterized in that
    the cleaning element (6, 7) has a disk-shaped engaging portion (11 or 12) which is in sliding contact on its periphery (13 or 14) with at least one of the two auger blades (9 and 10) that define the flight interspace (8).
  10. Auger wiper according to any one of claims 1 to 9,
    characterized in that
    the disk-shaped cleaning element (6, 7) has at least two cleaning blades (11 or 12) having a rounded periphery (13 or 14).
  11. Auger wiper according to any one of claims 1 to 10,
    characterized in that
    the disk-shaped cleaning element (6, 7) is designed in the shape of a clover leaf comprising four cleaning blades (11 or 12).
  12. Auger wiper according to claim 8,
    characterized in that
    the second cleaning element (7) is pivoted relative to the first cleaning element (6) by a specific angle with respect to the drill axis (32) such that the rotational planes of both cleaning elements (6, 7) intersect on the side of the cleaning element holder (19) facing towards the auger drill (3), in particular in a parallel to the drill axis (32).
  13. Auger wiper according to any one of claims 1 to 12,
    characterized in that
    an adjustable travel stop (31) restricts the motion path of the hydraulic piston (29) in the direction of the auger drill (3).
  14. Auger wiper according to any one of claims 1 to 13,
    characterized in that
    a ripping tool having at least one protruding bar is provided as a further cleaning element.
EP00114457A 1999-08-31 2000-07-05 Auger wiper Expired - Lifetime EP1081329B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19941409 1999-08-31
DE19941409A DE19941409C1 (en) 1999-08-31 1999-08-31 Screw cleaner for helical drilling tool has 2 offset cleaning elements pivoted relative to common holder into and out of engagement with helical screw thread of drilling tool via drive unit

Publications (2)

Publication Number Publication Date
EP1081329A1 EP1081329A1 (en) 2001-03-07
EP1081329B1 true EP1081329B1 (en) 2004-12-29

Family

ID=7920260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00114457A Expired - Lifetime EP1081329B1 (en) 1999-08-31 2000-07-05 Auger wiper

Country Status (2)

Country Link
EP (1) EP1081329B1 (en)
DE (2) DE19941409C1 (en)

Cited By (2)

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CN107448150A (en) * 2017-08-02 2017-12-08 张家港市兴鸿达基础有限公司 A kind of screw pile driver liftable device native clearly
WO2022028955A1 (en) 2020-08-05 2022-02-10 Bauer Maschinen Gmbh Device for cleaning a spiral space of an auger and method for producing a drilled hole

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GB0019804D0 (en) * 2000-08-12 2000-09-27 Elle Holdings Limited Van Auger cleaning device
FR2960573A1 (en) * 2010-05-26 2011-12-02 Robert Cavo Device for creating ground basin utilized to store water in ground, has mobile casing and blocking assembly allowing to glue concrete on walls of hole and to create ground basin, and pallet sliding in guide housing
DE202018101237U1 (en) * 2018-03-06 2019-06-07 Liebherr-Werk Nenzing Gmbh Device for cleaning a drilling auger
DE102018133068B4 (en) * 2018-12-20 2020-10-22 gemeinnützige KIMW Forschungs-GmbH Dosing device for dosing a powdery substance
DE102019109012A1 (en) * 2019-04-05 2020-10-08 Marcus Burg Cleaning device
CN113020049A (en) * 2021-03-26 2021-06-25 中曼石油钻井技术有限公司 Cleaning equipment for screw threads of drill rods
CN116146115B (en) * 2023-03-23 2023-11-24 中国建筑第四工程局有限公司 Soil scraping device of drilling machine

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US3540572A (en) * 1967-12-07 1970-11-17 Raymond Int Inc Cleaning helical flights
US3968846A (en) * 1975-05-09 1976-07-13 M.G.B., Inc. Auger wiper
DE3446902A1 (en) * 1984-12-21 1986-07-03 Karl Bauer Spezialtiefbau GmbH & Co KG, 8898 Schrobenhausen Device for discharging cuttings from the auger of an auger drilling appliance for earth bores
DE3839003C2 (en) * 1988-11-18 1996-07-11 Paul Dr Behringer Device for taking soil samples with a auger
GB2235480A (en) * 1989-08-15 1991-03-06 English Drilling Equipment Co Improvements in or relating to the clearing of drills
IT1236315B (en) * 1989-11-21 1993-02-09 SCRAPING DEVICE FOR CONTINUOUS PROPELLER DRILLS
US5242027A (en) * 1992-03-09 1993-09-07 Berkel & Company Contractors, Inc. Cleaning device for earth augers
GB2265922A (en) * 1992-04-01 1993-10-13 Starlite Investment Ltd Cleaning augers and screw-conveyors
IT1279562B1 (en) * 1995-05-25 1997-12-16 Soilmec Spa DEVICE FOR REMOVING DEBRIS FROM A FLEXIBLE DRILLING TOOL.
GB2332689B (en) * 1997-12-24 2002-01-16 Kvaerner Cementation Found Ltd Improved auger cleaners

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107448150A (en) * 2017-08-02 2017-12-08 张家港市兴鸿达基础有限公司 A kind of screw pile driver liftable device native clearly
WO2022028955A1 (en) 2020-08-05 2022-02-10 Bauer Maschinen Gmbh Device for cleaning a spiral space of an auger and method for producing a drilled hole
US11952838B2 (en) 2020-08-05 2024-04-09 Bauer Maschinen Gmbh Device for clearing a helix gap of an auger, and method for making a drilled hole

Also Published As

Publication number Publication date
DE19941409C1 (en) 2001-02-15
DE50009086D1 (en) 2005-02-03
EP1081329A1 (en) 2001-03-07

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