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EP1403450B1 - Shifting device - Google Patents

Shifting device Download PDF

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Publication number
EP1403450B1
EP1403450B1 EP03015467A EP03015467A EP1403450B1 EP 1403450 B1 EP1403450 B1 EP 1403450B1 EP 03015467 A EP03015467 A EP 03015467A EP 03015467 A EP03015467 A EP 03015467A EP 1403450 B1 EP1403450 B1 EP 1403450B1
Authority
EP
European Patent Office
Prior art keywords
piston rod
guide
displacement device
carriage
support element
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
EP03015467A
Other languages
German (de)
French (fr)
Other versions
EP1403450A1 (en
Inventor
Leonhard Weixler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bauer Maschinen GmbH
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Bauer Maschinen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Publication of EP1403450A1 publication Critical patent/EP1403450A1/en
Application granted granted Critical
Publication of EP1403450B1 publication Critical patent/EP1403450B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B19/00Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/086Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder

Definitions

  • the invention relates to a displacement device, in particular for construction machinery, with a guide, a carriage, which is slidably mounted on the guide, a Stellzylinder for moving the carriage, wherein the Stellzylinder one of a cylinder housing extendable Piston rod, and a support member for securing the Piston rod against buckling.
  • Moving devices come for example on construction machinery used for civil engineering, in which about a drill or a jogger along a vertical mast through the Actuator is moved vertically.
  • a construction machine is described for example in DE 198 13 902 C1.
  • About the actuating cylinder can so when lowering the Drill or the vibrator exerted a desired pressure force which are necessary for the necessary work progress provides.
  • actuating cylinder with a long stroke length of up to 5 m and more needed. This requires correspondingly long piston rods of the Actuating cylinder.
  • the invention has for its object to provide a displacement device in which the risk of buckling a piston rod is reliably counteracted in a simple manner.
  • the displacement device according to the invention is characterized that the support element both on the piston rod as also slidably mounted on the guide or the carriage is, and that the support element during extension of the piston rod up to a predetermined support position on the piston rod is displaceable.
  • a basic idea of the invention resides in the piston rod to provide a displaceable support member which the piston rod in a particularly critical position with the leadership or the sled couple. This will be at the support position the rigidity and thus the security against a Buckling increased.
  • Compared to known displacement devices can by the inventive arrangement of Supporting element with the same or even increased buckling safety a smaller diameter piston rod and thus a cheaper Stellzylinder be used.
  • the displacement device for the displacement device according to the invention any type of adjusting cylinders, for example a pneumatic cylinder, be used. But according to the invention it is particularly advantageous that the actuating cylinder is a hydraulic cylinder is. Because just hydraulic cylinders are used for application high forces, which leads to a corresponding risk of Kinking the piston rod lead.
  • a preferred embodiment of the displacement device according to the invention is that the actuating cylinder on the one hand hinged to the guide and on the other hand on the carriage and is arranged parallel to the guide. At this Arrangement is a good power transmission through the actuator cylinder on the sled while maintaining good mobility the support element on the piston rod and the guide or the carriage reached.
  • the support element preferably has Gleitbüchsen or sliding shoes, with which the Support element along the piston rod or the guide slidably is stored.
  • the support element via a light Clamping on the piston rod with this be slidable.
  • a particularly low-wear version of the displacement device is achieved according to the invention that to move of the support element arranged a driver on the carriage is.
  • the driver is attached to the carriage, that when reaching the final position of the carriage the sliding bearing support element through the driver up to the desired support position is performed.
  • retracting the Piston rod can through the support element in a simple manner the head of the piston rod together with the slide in the retracted retracted initial position.
  • the leadership is arranged. This is especially useful if the support element by static friction on the piston rod or by gravity action, for example when the piston rod is extended vertically downwards.
  • a stop ensures a defined position of the support element in the desired support position.
  • the support member the piston rod completely encompassing.
  • a Gleitbüchse be used, which mounted on the piston rod is.
  • the slide bush is then in a corresponding Bearing opening of the support element attached.
  • the displacement device according to the invention be used in different areas. Also at smaller stroke lengths, the invention can be used, it is essentially based on the ratio between the maximum Force of the piston rod length, the piston rod diameter and the required buckling arrives. There the cost of adjusting cylinders with increasing size increase significantly, is the use of the invention Displacement device, in particular from stroke lengths of 1 m and more particularly economical.
  • a high efficiency is inventively in a Construction machine reached, in which the guide to a in operation vertical mast is formed and the piston rod along the mast downwards extendable.
  • the shifting device is in particular for rotary drilling rigs for Creating foundation piles used in the ground.
  • the support element can be stored in a sliding manner and is by gravity moved to the support position.
  • a displacement device is shown 10 in a partially shown drill for lowering shown by drilling for foundation piles.
  • a vertical Mast 42 which usually with a superstructure of a Construction vehicle is one trained as a rail Guide 12 arranged.
  • a Carriage 14 Along the guide 12 is a Carriage 14 via two encompassing sliders 15 vertically slidably mounted.
  • a Rotary drive 44 housed, with which in a known manner a drilling tool, such as a drilling screw, driven in rotation becomes.
  • an actuating cylinder 20 is provided. Whose Cylinder housing 22 is hinged to the mast head, while the in Cylinder housing 22 extendable mounted piston rod 24 with her head 25 is hinged to the carriage 14.
  • the support member 16 extends transverse to the piston rod 24 to the guide 12, at which the support member 16 via a slide shoe 18 also sliding is slidably mounted.
  • the support member 16 remains in the position shown in Figure 1, to a stop surface on the head 25 of the piston rod 24 rests against the support element 16 and this entrains the further retraction of the piston rod 24 and goes up.
  • the support member 16 In the retracted position of the piston rod 24 is the support member 16 on the one hand to a stop flange 23 of the cylinder housing 22 and on the other hand the head 25 of the piston rod 24 at.
  • Another displacement device 10 is in Connection with a marker device shown in FIG explained.
  • a guide 12 is arranged, along which the mecanicados pronouncekler forming carriage 14 is vertically movable.
  • a guide rail 13 which in conjunction with the guide 12 ensures a defined linear movement.
  • a cylinder housing 22 of an actuating cylinder 20 attached, which is parallel to the guide 12 and the guide rail 13 extends, wherein the cylinder housing 22 mounted piston rod 24 at its upper end with the head of the carriage 14 is connected.
  • a support member 16 is both along the piston rod 24 as well as along the guide rail 13 of the carriage 14 slidably mounted.
  • the support element When extending the piston rod 24, the support element remains 16 initially in its position on the stop flange 23 until the by the piston rod 24 upwardly moved carriage 14 with a driver 26, the underside of the support member 16 contacted and this now moves up with.
  • the driver 26 is arranged on the carriage 14 such that in the maximum extended position of the piston rod 24 the Support member 16 is arranged approximately centrally. In this embodiment is the definition of the support position yet supports that another upwards process of the support element 16 by a downwardly directed elongated counter-attack 29 prevents which when reaching the support position acts against a stop 28 on the scent insomniakler.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Actuator (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Surgical Instruments (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

The device has an operating cylinder (20) with a piston rod (24) extendible from a cylinder block (22) and displaces a carriage (14) mounted on a guide (12). A support segment (16) is mounted displaceably on the piston rod and guide or carriage. The support segment is displaced to a predetermined support position on the piston rod when the rod is extended. An Independent claim is also included for a construction machine.

Description

Die Erfindung betrifft eine Verschiebevorrichtung, insbesondere für Baumaschinen, mit einer Führung, einem Schlitten, welcher an der Führung verschiebbar gelagert ist, einem Stellzylinder zum Verschieben des Schlittens, wobei der Stellzylinder eine aus einem Zylindergehäuse ausfahrbare Kolbenstange aufweist, und einem Stützelement zum Sichern der Kolbenstange gegen Ausknicken.The invention relates to a displacement device, in particular for construction machinery, with a guide, a carriage, which is slidably mounted on the guide, a Stellzylinder for moving the carriage, wherein the Stellzylinder one of a cylinder housing extendable Piston rod, and a support member for securing the Piston rod against buckling.

Verschiebevorrichtungen kommen beispielsweise an Baumaschinen für den Tiefbau zum Einsatz, bei welchen etwa ein Bohrgerät oder ein Rüttler entlang eines vertikalen Mastes durch den Stellzylinder vertikal verfahren wird. Eine derartige Baumaschine wird beispielsweise in der DE 198 13 902 C1 beschrieben. Über den Stellzylinder kann so beim Niederbringen des Bohrgerätes oder des Rüttlers eine gewünschte Druckkraft ausgeübt werden, welche für den notwendigen Arbeitsfortschritt sorgt. Insbesondere bei diesem Einsatzzweck werden Stellzylinder mit einer großen Hublänge von bis zu 5 m und mehr benötigt. Dies erfordert entsprechend lange Kolbenstangen des Stellzylinders.Moving devices come for example on construction machinery used for civil engineering, in which about a drill or a jogger along a vertical mast through the Actuator is moved vertically. Such a construction machine is described for example in DE 198 13 902 C1. About the actuating cylinder can so when lowering the Drill or the vibrator exerted a desired pressure force which are necessary for the necessary work progress provides. In particular, in this application are actuating cylinder with a long stroke length of up to 5 m and more needed. This requires correspondingly long piston rods of the Actuating cylinder.

Aufgrund der großen Länge der Kolbenstange sowie der hohen Krafteinwirkung auf die Kolbenstange besteht bei diesen Verschiebevorrichtungen die Gefahr eines Ausknickens der Kolbenstange.Due to the large length of the piston rod and the high Force on the piston rod is in these displacement devices the risk of buckling of the piston rod.

Um ein Ausknicken der Kolbenstange mit der notwendigen Sicherheit zu verhindern, ist es bekannt, die Kolbenstange mit einem entsprechend großen Querschnitt auszubilden. Dies bedeutet ein entsprechend hohes Gewicht und einen entsprechenden Kostenaufwand für die Stellzylinder.To buckle the piston rod with the necessary security It is known to prevent the piston rod with a form correspondingly large cross-section. This means a correspondingly high weight and a corresponding cost for the actuating cylinder.

Aus der DE 71 46 219 U ist eine Schlittenführung bekannt, die ein Durchhängen eines waagerecht angeordneten Teleskopzylinders verhindern soll. Hierzu ist ein Stützlager an einem Zylinderrohr des Teleskopzylinders kraftschlüssig befestigt.From DE 71 46 219 U a slide guide is known, the a sagging of a horizontally arranged telescopic cylinder should prevent. For this purpose, a support bearing on a cylinder tube attached to the telescopic cylinder non-positively.

In der DE 93 21 598 U1 wird eine Kolbenzylindereinheit mit einem Zylinder und einer Kolbenstange zum Bewegen eines Schildes in einem Behälter offenbart. Sowohl der Zylinder als auch die Kolbenstange weisen dabei eine Lagerstelle auf, die jeweils an einer Arretierschiene arretierbar ist. Durch abwechselndes Arretieren der beiden Lagerstellen und gleichzeitiges Hin- und Herbewegen der Kolbenstange im Zylinder kann eine Mitschreitbewegung der Kolbenzylindereinheit entlang der Arretierschiene erreicht werden.In DE 93 21 598 U1 a piston-cylinder unit with a Cylinder and a piston rod for moving a shield disclosed in a container. Both the cylinder and the Piston thereby have a bearing point, each on a locking rail is locked. By alternately locking the two bearing points and simultaneous outward and Moving the piston rod in the cylinder can be a Mitschreitbewegung the piston-cylinder unit along the locking rail be achieved.

Der Erfindung liegt die Aufgabe zugrunde, eine Verschiebevorrichtung anzugeben, bei welcher der Gefahr eines Ausknickens einer Kolbenstange in einfacher Weise zuverlässig entgegengewirkt wird.The invention has for its object to provide a displacement device in which the risk of buckling a piston rod is reliably counteracted in a simple manner.

Die Aufgabe wird nach der Erfindung durch eine Verschiebevorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Bevorzugte Ausführungsformen der Erfindung sind in den abhängigen Ansprüchen angegeben.The object is according to the invention by a displacement device solved with the features of claim 1. preferred Embodiments of the invention are defined in the dependent claims specified.

Die erfindungsgemäße Verschiebevorrichtung ist dadurch gekennzeichnet, dass das Stützelement sowohl an der Kolbenstange als auch an der Führung oder dem Schlitten verschiebbar gelagert ist, und dass das Stützelement beim Ausfahren der Kolbenstange bis zu einer vorgegebenen Stützposition an der Kolbenstange verschiebbar ist. The displacement device according to the invention is characterized that the support element both on the piston rod as also slidably mounted on the guide or the carriage is, and that the support element during extension of the piston rod up to a predetermined support position on the piston rod is displaceable.

Eine Grundidee der Erfindung liegt darin, an der Kolbenstange ein verschiebbares Stützelement vorzusehen, welches die Kolbenstange an einer besonders kritischen Position mit der Führung oder dem Schlitten koppelt. Hierdurch wird an der Stützposition die Steifigkeit und damit die Sicherheit gegen ein Ausknicken erhöht. Im Vergleich zu bekannten Verschiebevorrichtungen kann durch die erfindungsgemäße Anordnung des Stützelementes bei gleicher oder sogar erhöhter Knicksicherheit eine durchmesserkleinere Kolbenstange und damit ein kostengünstigerer Stellzylinder verwendet werden.A basic idea of the invention resides in the piston rod to provide a displaceable support member which the piston rod in a particularly critical position with the leadership or the sled couple. This will be at the support position the rigidity and thus the security against a Buckling increased. Compared to known displacement devices can by the inventive arrangement of Supporting element with the same or even increased buckling safety a smaller diameter piston rod and thus a cheaper Stellzylinder be used.

Grundsätzlich kann für die erfindungsgemäße Verschiebevorrichtung jede Art von Stellzylindern, beispielsweise ein Pneumatikzylinder, eingesetzt werden. Nach der Erfindung ist es aber besonders vorteilhaft, dass der Stellzylinder ein Hydraulikzylinder ist. Denn gerade Hydraulikzylinder dienen zum Aufbringen hoher Kräfte, welche zu einer entsprechenden Gefahr eines Ausknickens der Kolbenstange führen.In principle, for the displacement device according to the invention any type of adjusting cylinders, for example a pneumatic cylinder, be used. But according to the invention it is particularly advantageous that the actuating cylinder is a hydraulic cylinder is. Because just hydraulic cylinders are used for application high forces, which leads to a corresponding risk of Kinking the piston rod lead.

Eine bevorzugte Ausführungsform der erfindungsgemäßen Verschiebevorrichtung besteht darin, dass der Stellzylinder einerseits an der Führung und andererseits an dem Schlitten angelenkt und parallel zur Führung angeordnet ist. Bei dieser Anordnung wird eine gute Kraftübertragung durch den Stellzylinder auf den Schlitten bei gleichzeitig guter Verschiebbarkeit des Stützelementes an der Kolbenstange und der Führung bzw. dem Schlitten erreicht. Das Stützelement weist vorzugsweise Gleitbüchsen oder Gleitschuhe auf, mit welchen das Stützelement entlang der Kolbenstange bzw. der Führung verschiebbar gelagert ist.A preferred embodiment of the displacement device according to the invention is that the actuating cylinder on the one hand hinged to the guide and on the other hand on the carriage and is arranged parallel to the guide. At this Arrangement is a good power transmission through the actuator cylinder on the sled while maintaining good mobility the support element on the piston rod and the guide or the carriage reached. The support element preferably has Gleitbüchsen or sliding shoes, with which the Support element along the piston rod or the guide slidably is stored.

Grundsätzlich könnte das Stützelement über einen leichten Klemmsitz an der Kolbenstange mit dieser verschiebbar sein. Eine besonders verschleißarme Ausführung der Verschiebevorrichtung wird erfindungsgemäß dadurch erreicht, dass zum Verschieben des Stützelementes ein Mitnehmer an den Schlitten angeordnet ist. Der Mitnehmer ist dabei so an dem Schlitten angebracht, dass bei Erreichen der Endposition des Schlittens das gleitend gelagerte Stützelement durch den Mitnehmer bis zu der gewünschten Stützposition geführt ist. Bei Einfahren der Kolbenstange kann das Stützelement in einfacher Weise durch den Kopf der Kolbenstange zusammen mit dem Schlitten in die eingezogene Ausgangsposition rückgeführt werden.Basically, the support element via a light Clamping on the piston rod with this be slidable. A particularly low-wear version of the displacement device is achieved according to the invention that to move of the support element arranged a driver on the carriage is. The driver is attached to the carriage, that when reaching the final position of the carriage the sliding bearing support element through the driver up to the desired support position is performed. When retracting the Piston rod can through the support element in a simple manner the head of the piston rod together with the slide in the retracted retracted initial position.

Nach der Erfindung ist es weiterhin vorteilhaft, dass zum Begrenzen des Verschiebens des Stützelementes ein Anschlag an der Führung angeordnet ist. Dies ist besonders dann sinnvoll, wenn das Stützelement durch Haftreibung an der Kolbenstange oder durch Schwerkrafteinwirkung verfahren wird, beispielsweise wenn die Kolbenstange vertikal nach unten ausgefahren wird. Ein Anschlag sorgt für eine definierte Lage des Stützelementes in der gewünschten Stützposition.According to the invention, it is also advantageous for limiting the displacement of the support element to a stop the leadership is arranged. This is especially useful if the support element by static friction on the piston rod or by gravity action, for example when the piston rod is extended vertically downwards. A stop ensures a defined position of the support element in the desired support position.

Für eine besonders gute Versteifung der Kolbenstange ist es erfindungsgemäß vorgesehen, dass das Stützelement die Kolbenstange vollständig umgreift. Hierzu kann beispielsweise eine Gleitbüchse verwendet werden, welche auf die Kolbenstange aufgezogen ist. Die Gleitbüchse ist dann in einer entsprechenden Lageröffnung des Stützelementes befestigt.For a particularly good stiffening of the piston rod, it is According to the invention provided that the support member, the piston rod completely encompassing. For this example, a Gleitbüchse be used, which mounted on the piston rod is. The slide bush is then in a corresponding Bearing opening of the support element attached.

Bei einem einzelnen Stützelement ist es zweckmäßig, dass bei vollständig ausgefahrener Kolbenstange die Stützposition in der Mitte der ausgefahrenen Kolbenstange angeordnet ist. Dies stellt unter Berücksichtigung des entsprechenden Euler' schen Knickfalles die für die Knickgefahr kritische Position dar. In dieser mittleren Position wird also durch das Stützelement die größte Wirkung gegen ein Ausknicken erzeugt.In a single support element, it is appropriate that at fully extended piston rod the support position in the center of the extended piston rod is arranged. This provides in consideration of the corresponding Euler 's Knickfalles the critical position for the risk of buckling This middle position is thus by the support element greatest effect against buckling generated.

Bei besonders großen Hublängen ist es nach der Erfindung vorteilhaft, dass mehrere Stützelemente an einer Kolbenstange vorgesehen sind, deren jeweilige Stützposition zueinander versetzt sind. Dies kann etwa durch eine kaskadenartige Anordnung der Stützelemente mit entsprechend vorgesehenen treppenförmigen Mitnehmern oder Anschlägen erreicht werden. Auf diese Weise kann auch eine sehr lange Kolbenstange von über 10 m zuverlässig versteift und abgestützt werden. For particularly long stroke lengths, it is advantageous according to the invention, that several support elements on a piston rod are provided, the respective support position offset from each other are. This can be done by a cascade arrangement the support elements with appropriately provided step-shaped Passengers or attacks can be achieved. In this way can also be a very long piston rod of over 10 m reliable stiffened and supported.

Grundsätzlich kann die erfindungsgemäße Verschiebevorrichtung in den unterschiedlichsten Gebieten eingesetzt werden. Auch bei kleineren Hublängen kann die Erfindung zum Einsatz kommen, wobei es im Wesentlichen auf das Verhältnis zwischen der maximalen Stellkraft der Kolbenstangenlänge, des Kolbenstangendurchmessers sowie der geforderten Knicksicherheit ankommt. Da die Anschaffungskosten von Stellzylindern mit zunehmender Baugröße erheblich ansteigen, ist der Einsatz der erfindungsgemäßen Verschiebevorrichtung insbesondere ab Hublängen von 1 m und mehr besonders wirtschaftlich.In principle, the displacement device according to the invention be used in different areas. Also at smaller stroke lengths, the invention can be used, it is essentially based on the ratio between the maximum Force of the piston rod length, the piston rod diameter and the required buckling arrives. There the cost of adjusting cylinders with increasing size increase significantly, is the use of the invention Displacement device, in particular from stroke lengths of 1 m and more particularly economical.

Eine hohe Wirtschaftlichkeit wird erfindungsgemäß bei einer Baumaschine erreicht, bei welcher die Führung an einem im Betrieb vertikalen Mast ausgebildet ist und die Kolbenstange entlang des Mastes nach unten ausfahrbar ist. Die Verschiebevorrichtung wird dabei insbesondere für Drehbohrgeräte zum Erstellen von Gründungspfählen im Boden eingesetzt. Das Stützelement kann gleitend gelagert sein und wird durch die Schwerkraft in die Stützposition bewegt.A high efficiency is inventively in a Construction machine reached, in which the guide to a in operation vertical mast is formed and the piston rod along the mast downwards extendable. The shifting device is in particular for rotary drilling rigs for Creating foundation piles used in the ground. The support element can be stored in a sliding manner and is by gravity moved to the support position.

Eine weitere vorteilhafte Anwendung ist bei einer Baumaschine gegeben, bei welcher die Führung als ein Innenmäkler und der Schlitten als ein Außenmäkler ausgebildet sind und die Kolbenstange im Betrieb vertikal nach oben ausfahrbar ist. Diese sogenannten Mäklervorrichtungen dienen für sogenannte Rüttler zum Einbringen von Pfählen in lockeren Boden.Another advantageous application is in a construction machine given, in which the leadership as a Innenmäkler and the Sleds are designed as a Außenmäkler and the piston rod can be extended vertically upwards during operation. These so-called Mäklervorrichtungen serve for so-called vibrators for placing piles in loose soil.

Die Erfindung wird nachfolgend anhand von bevorzugten Ausführungsbespielen erläutert, welche schematisch in den beigefügten Zeichnungen dargestellt sind. In den Zeichnungen zeigen:

Fig. 1
eine schematische Seitenansicht einer erfindungsgemäßen Verschiebevorrichtung für ein Bohrgerät; und
Fig. 2
eine schematische Seitenansicht einer erfindungsgemäßen Verschiebevorrichtung für einen Mäkler.
The invention will be explained below with reference to preferred exemplary embodiments, which are shown schematically in the attached drawings. In the drawings show:
Fig. 1
a schematic side view of a displacement device according to the invention for a drill; and
Fig. 2
a schematic side view of a sliding device according to the invention for a leader.

Gemäß Figur 1 ist eine erfindungsgemäße Verschiebevorrichtung 10 in einem teilweise dargestellten Bohrgerät zum Niederbringen von Bohrungen für Gründungspfähle gezeigt. An einem vertikalen Mast 42, welcher üblicherweise mit einem Oberwagen eines Baufahrzeuges in Verbindung steht, ist eine als Schiene ausgebildete Führung 12 angeordnet. Entlang der Führung 12 ist ein Schlitten 14 über zwei umgreifende Gleiteinrichtungen 15 vertikal verschiebbar gelagert. Auf dem Schlitten 14 ist ein Drehantrieb 44 untergebracht, mit welchem in bekannter Weise ein Bohrwerkzeug, wie etwa eine Bohrschnecke, drehend angetrieben wird.According to FIG. 1, a displacement device according to the invention is shown 10 in a partially shown drill for lowering shown by drilling for foundation piles. On a vertical Mast 42, which usually with a superstructure of a Construction vehicle is one trained as a rail Guide 12 arranged. Along the guide 12 is a Carriage 14 via two encompassing sliders 15 vertically slidably mounted. On the carriage 14 is a Rotary drive 44 housed, with which in a known manner a drilling tool, such as a drilling screw, driven in rotation becomes.

Zum Verschieben des Schlittens 14 nach unten mit einer vorgegebenen Druckkraft ist ein Stellzylinder 20 vorgesehen. Dessen Zylindergehäuse 22 ist am Mastkopf angelenkt, während die im Zylindergehäuse 22 ausfahrbar gelagerte Kolbenstange 24 mit ihrem Kopf 25 an dem Schlitten 14 angelenkt ist.To move the carriage 14 down with a predetermined Compressive force is an actuating cylinder 20 is provided. Whose Cylinder housing 22 is hinged to the mast head, while the in Cylinder housing 22 extendable mounted piston rod 24 with her head 25 is hinged to the carriage 14.

An der zylindrischen Kolbenstange 24 ist ein im Querschnitt dargestelltes plattenförmiges Stützelement 16 über eine Gleitbuchse verschiebbar gelagert. Das Stützelement 16 erstreckt sich quer zur Kolbenstange 24 bis zur Führung 12, an welcher das Stützelement 16 über einen Gleitschuh 18 ebenfalls gleitend verschiebbar gelagert ist. Beim Einfahren der Kolbenstange 24 in das Zylindergehäuse 22 verbleibt das Stützelement 16 in der in Figur 1 dargestellten Lage, bis eine Anschlagsfläche am Kopf 25 der Kolbenstange 24 an dem Stützelement 16 anliegt und dieses beim weiteren Einfahren der Kolbenstange 24 mitnimmt und hoch fährt. In der eingefahrenen Position der Kolbenstange 24 liegt das Stützelement 16 einerseits an einem Anschlagsflansch 23 des Zylindergehäuses 22 und andererseits an dem Kopf 25 der Kolbenstange 24 an.On the cylindrical piston rod 24 is a cross-section represented plate-shaped support member 16 via a sliding bushing slidably mounted. The support member 16 extends transverse to the piston rod 24 to the guide 12, at which the support member 16 via a slide shoe 18 also sliding is slidably mounted. When retracting the piston rod 24 in the cylinder housing 22, the support member 16 remains in the position shown in Figure 1, to a stop surface on the head 25 of the piston rod 24 rests against the support element 16 and this entrains the further retraction of the piston rod 24 and goes up. In the retracted position of the piston rod 24 is the support member 16 on the one hand to a stop flange 23 of the cylinder housing 22 and on the other hand the head 25 of the piston rod 24 at.

Beim Ausfahren der Kolbenstange 24 mit dem angelenkten Schlitten 14 folgt das Stützelement 16 aufgrund seiner Schwerkraft der Ausfahrbewegung, bis das Stützelement 16 in einer vorgegebenen Stützposition an einem Anschlag 28 an der Führung 12 zur Anlage kommt. Das Stützelement 16 verbleibt in dieser Stützposition bis die Kolbenstange 24 mit dem Stützelement 14 ihre vollständig ausgefahrene Position erreicht hat, die in Figur 1 dargestellt ist. Bei dieser maximalen Hublänge besteht grundsätzlich die größte Gefahr des Ausknickens in der Mitte der Kolbenstange 24, wobei durch die Positionierung der Stützelemente 16 an dieser kritischen Stelle eine erhöhte Sicherheit gewährleistet wird.When extending the piston rod 24 with the articulated carriage 14 follows the support member 16 due to its gravity the extension movement, until the support member 16 in a predetermined Support position on a stop 28 on the guide 12 to Plant comes. The support member 16 remains in this support position until the piston rod 24 with the support member 14 their has reached fully extended position, the in Figure 1 is shown. With this maximum stroke length is basically the biggest danger of buckling in the middle of the Piston rod 24, wherein the positioning of the support elements 16 at this critical point increased security is guaranteed.

Eine weitere erfindungsgemäße Verschiebevorrichtung 10 ist im Zusammenhang mit einer in Figur 2 dargestellten Mäklereinrichtung erläutert. In einem im Betrieb vertikalen Außenmäkler 11 ist eine Führung 12 angeordnet, an welcher entlang ein den Innenmäkler bildenden Schlitten 14 vertikal verfahrbar ist. Der längliche Schlitten 14 weist bei dieser Mäklervorrichtung selbst eine Führungsschiene 13 auf, welche in Verbindung mit der Führung 12 eine definierte lineare Bewegung sicherstellt. Am Außenmäkler 11 ist ein Zylindergehäuse 22 eines Stellzylinders 20 angebracht, welcher sich parallel zur Führung 12 und der Führungsschiene 13 erstreckt, wobei die im Zylindergehäuse 22 gelagerte Kolbenstange 24 an ihrem oberen Ende mit dem Kopf des Schlittens 14 verbunden ist. Ein Stützelement 16 ist sowohl entlang der Kolbenstange 24 als auch entlang der Führungsschiene 13 des Schlittens 14 gleitend verschiebbar gelagert.Another displacement device 10 according to the invention is in Connection with a marker device shown in FIG explained. In a vertical in operation outside Maekler 11 a guide 12 is arranged, along which the Innenmäkler forming carriage 14 is vertically movable. Of the elongated carriage 14 points at this Mäklervorrichtung itself a guide rail 13, which in conjunction with the guide 12 ensures a defined linear movement. At Außenmäkler 11 is a cylinder housing 22 of an actuating cylinder 20 attached, which is parallel to the guide 12 and the guide rail 13 extends, wherein the cylinder housing 22 mounted piston rod 24 at its upper end with the head of the carriage 14 is connected. A support member 16 is both along the piston rod 24 as well as along the guide rail 13 of the carriage 14 slidably mounted.

In einer eingefahrenen Position der Kolbenstange 24 liegt das Stützelement 16 mit seiner Unterseite auf einem Anschlagflansch 23 des Zylindergehäuses 22 auf, während die Oberseite des Stützelementes 16 von einer Anschlagplatte 30 am Kopf der Kolbenstange 24 kontaktiert wird.In a retracted position of the piston rod 24 is the Support member 16 with its underside on a stop flange 23 of the cylinder housing 22, while the top of the support element 16 of a stop plate 30 at the top of the Piston rod 24 is contacted.

Beim Ausfahren der Kolbenstange 24 verbleibt das Stützelement 16 zunächst in seiner Lage auf dem Anschlagflansch 23, bis der durch die Kolbenstange 24 nach oben bewegte Schlitten 14 mit einem Mitnehmer 26 die Unterseite des Stützelements 16 kontaktiert und dieses nunmehr mit nach oben bewegt. Der Mitnehmer 26 ist dabei derart an dem Schlitten 14 angeordnet, dass in der maximal ausgefahrenen Position der Kolbenstange 24 das Stützelement 16 etwa mittig angeordnet ist. Bei dieser Ausführungsform ist die Definierung der Stützposition noch dadurch unterstützt, dass ein weiteres Nachobenverfahren des Stützelements 16 durch einen nach unten gerichteten länglichen Gegenanschlag 29 verhindert, welcher bei Erreichen der Stützposition gegen einen Anschlag 28 an dem Außenmäkler wirkt.When extending the piston rod 24, the support element remains 16 initially in its position on the stop flange 23 until the by the piston rod 24 upwardly moved carriage 14 with a driver 26, the underside of the support member 16 contacted and this now moves up with. The driver 26 is arranged on the carriage 14 such that in the maximum extended position of the piston rod 24 the Support member 16 is arranged approximately centrally. In this embodiment is the definition of the support position yet supports that another upwards process of the support element 16 by a downwardly directed elongated counter-attack 29 prevents which when reaching the support position acts against a stop 28 on the Außenmäkler.

Claims (10)

  1. Displacement device, particularly for construction machines, with a guide (12),
    a carriage (14), which is displaceably mounted on the guide (12),
    an operating cylinder (20) for displacing the carriage (14), whereby the operating cylinder (20) having a piston rod (24) extendible from a cylinder block (22) and
    a support element (16) for preventing buckling of the piston rod (24),
    characterized in that
    the support element (16) is displaceably mounted both on the piston rod (24) and on the guide (12) or carriage (14) and the support element (16), on extending the piston rod (24), is displaceable up to a predetermined support position on said piston rod (24).
  2. Displacement device according to claim 1,
    characterized in that
    the operating cylinder (20) is a hydraulic cylinder.
  3. Displacement device according to claim 1 or 2,
    characterized in that
    the operating cylinder (20) is articulated on the one hand to the guide (12) and on the other to the carriage (14) and is positioned parallel to the guide (12).
  4. Displacement device according to any one of claims 1 to 3,
    characterized in that
    a dog (26) is provided on the carriage (14) for the displacement of the support element (16).
  5. Displacement device according to any one of claims 1 to 4,
    characterized in that
    a stop (28) is provided on the guide (12) for limiting the displacement of the support element (16).
  6. Displacement device according to any one of claims 1 to 5,
    characterized in that
    in the case of a completely extended piston rod (24), the support element (16) is located in the centre of the extended piston rod (24).
  7. Displacement device according to any one of claims 1 to 6,
    characterized in that
    the support element (16) completely embraces the piston rod (24).
  8. Displacement device according to any one of claims 1 to 7,
    characterized in that,
    several support elements (16) are provided on a piston rod (24), whose support positions are mutually offset.
  9. Construction machine with a displacement device according to any one of claims 1 to 8,
    characterized in that
    the guide (12) is constructed on a mast (42) which is vertical in operation and the piston rod (24) is downwardly extendible along the mast (42).
  10. Construction machine with a displacement device according to any one of claims 1 to 8,
    characterized in that
    the guide (12) is constructed as an inside guide and the carriage (14) as an outside guide and the piston rod (24) is extendible vertically upwards in operation.
EP03015467A 2002-09-20 2003-07-09 Shifting device Expired - Lifetime EP1403450B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10243744 2002-09-20
DE10243744A DE10243744B4 (en) 2002-09-20 2002-09-20 Displacement device and construction machine with displacement device

Publications (2)

Publication Number Publication Date
EP1403450A1 EP1403450A1 (en) 2004-03-31
EP1403450B1 true EP1403450B1 (en) 2005-04-06

Family

ID=31969322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03015467A Expired - Lifetime EP1403450B1 (en) 2002-09-20 2003-07-09 Shifting device

Country Status (4)

Country Link
US (1) US6880453B2 (en)
EP (1) EP1403450B1 (en)
AT (1) ATE292723T1 (en)
DE (2) DE10243744B4 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20045196L (en) * 2004-05-31 2005-12-22 Sandvik Tamrock Oy Telescopic feed beam for rock drill
DE102006034890A1 (en) * 2006-07-25 2008-02-07 Prime Drilling Gmbh Perpendicular drilling system for deep drilling hole, has drill head guided to drilling mast, and feeding device engaged at drill head and formed as hydraulic-piston-cylinder units whose stroke corresponds to length of drilling rod units
CN103118832B (en) 2010-05-28 2015-09-30 布拉斯方德美国公司 pipeline insertion system
RU2501931C2 (en) * 2011-09-20 2013-12-20 Закрытое акционерное общество "Геомаш-центр" Drilling machine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7146219U (en) 1973-08-02 Von Bila Ch Slide guide for telescopic cylinder
DE2546145A1 (en) * 1975-10-15 1977-04-28 Ver Flugtechnische Werke Telescopically extensible radio antenna mast - has sheathing tube retainers and latches to provide locking for stabilisation
EP0539752B1 (en) * 1991-10-31 1996-07-31 Paul Wurth S.A. Apparatus for opening the taphole of a shaft furnace
DE9321598U1 (en) * 1993-05-10 2000-04-20 Max Aicher GmbH Entsorgungstechnik, 83395 Freilassing Piston-cylinder unit, in particular for moving a sign in a container
JP3479754B2 (en) * 1995-04-20 2003-12-15 株式会社フジタ Rock drilling equipment
US5988298A (en) * 1997-03-12 1999-11-23 Ingersoll-Rand Company Drill rod position stabilizing device
DE19813902C1 (en) * 1998-03-28 1999-06-17 Bauer Spezialtiefbau Method of monitoring a telescopic bore rod
CA2338823C (en) * 2001-02-27 2004-07-06 Hy-Tech Drilling Ltd. Drilling apparatus

Also Published As

Publication number Publication date
US6880453B2 (en) 2005-04-19
DE10243744B4 (en) 2006-10-12
ATE292723T1 (en) 2005-04-15
DE10243744A1 (en) 2004-04-01
US20040055459A1 (en) 2004-03-25
EP1403450A1 (en) 2004-03-31
DE50300424D1 (en) 2005-05-12

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