EP2146027B1 - Construction device with rotatable mast - Google Patents

Construction device with rotatable mast Download PDF

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Publication number
EP2146027B1
EP2146027B1 EP09005678A EP09005678A EP2146027B1 EP 2146027 B1 EP2146027 B1 EP 2146027B1 EP 09005678 A EP09005678 A EP 09005678A EP 09005678 A EP09005678 A EP 09005678A EP 2146027 B1 EP2146027 B1 EP 2146027B1
Authority
EP
European Patent Office
Prior art keywords
mast
hydraulic cylinder
spacer
coupling rocker
construction apparatus
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.)
Not-in-force
Application number
EP09005678A
Other languages
German (de)
French (fr)
Other versions
EP2146027A1 (en
Inventor
Erwin Emil Stötzer
Leonhard Weixler
Jürgen Rohland
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
Original Assignee
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 EP2146027A1 publication Critical patent/EP2146027A1/en
Application granted granted Critical
Publication of EP2146027B1 publication Critical patent/EP2146027B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E02D13/04—Guide devices; Guide frames
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
    • E02D7/16—Scaffolds or supports for drivers

Definitions

  • the invention relates to a construction work implement with a base support, a mast which is pivotally mounted on the base support, a first hydraulic cylinder and a second hydraulic cylinder for erecting the mast, which are hinged together in a connecting portion, wherein the first hydraulic cylinder on the base support and the second hydraulic cylinder is hinged to the mast, and a coupling rocker, which is articulated on one side of the mast and on another side to the connecting portion.
  • a generic construction equipment is from the US 4,708,581 known. According to this publication, a generic double-cylinder arrangement is used for erecting and folding a transfer arm, which has a mast-like section. The actual drilling mast is erected by means of a telescopic cylinder.
  • Another construction tool with a mast, on the holder two hydraulic cylinders are arranged one behind the other, is from the JP 05-202686 A known.
  • the JP 2002-285775 A discloses a construction implement, the mast is telescopic and is pivotable about a horizontal pivot axis by means of a hydraulic cylinder.
  • the object of the invention is to develop a generic construction equipment so that a particularly high reliability and cost-effectiveness is achieved.
  • the construction work apparatus according to the invention is characterized in that a spacer is arranged in the region of the connecting portion, through which the connecting portion is releasably supported on the mast.
  • two erecting cylinders coupled in series are provided for erecting the mast, which are connected to one another via a coupling rocker articulated on the mast.
  • the first hydraulic cylinder is articulated in the corner region of a triangle, which is formed by the second hydraulic cylinder, the coupling rocker and a mast section extending between the second hydraulic cylinder and the coupling rocker.
  • the invention has recognized that with such a cylinder arrangement, in particular at the beginning of the erection process, relatively high forces may have to be applied. This may be due to the fact that, at the beginning of the erection process, the hydraulic cylinders, in particular the second hydraulic cylinder, run comparatively flat to the mast longitudinal axis.
  • the force applied by the cylinders force vector thus extends flat to the mast longitudinal axis and, accordingly, small is the force component which acts transversely to the mast longitudinal axis and thus in the raising direction.
  • a basic idea of the invention resides in a spacer with which the connecting section between the second hydraulic cylinder and the coupling rocker can be supported on the mast in the initial phase of the erection process.
  • This spacer allows an additional introduction of force from the connecting portion in the mast and can thus relieve the second hydraulic cylinder, but also the coupling rocker.
  • the spacer can be arranged steeply relative to the longitudinal axis of the mast, preferably at an angle of at least approximately 90 ° to the longitudinal axis of the mast, so that the force vector transmitted via the spacer can point at least approximately in the erecting direction. Since therefore no unnecessary force components must be applied perpendicular to the installation direction, the forces to be applied are relatively small and the hydraulic cylinders are relieved.
  • the hydraulic cylinders can thus be designed with the same mast weight for smaller operating forces, so that the initial cost is reduced.
  • the connecting portion is releasably supported on the mast.
  • the given via the spacer contact between the connecting portion and mast can thus be solved if, especially at a late stage of Aufrichtvorganges, no force on the spacer is required in the mast more.
  • the spacer for a detachable connection on the mast or on the connecting portion that is, the mast or the connecting portion forms a stop for the spacer, which limits further movement of the spacer to the mast or connecting portion, a detachment of the spacer by a Movement from the mast or connecting section, however, allowed.
  • the spacer is held by the mast or connecting portion only to pressure, but not to train.
  • a locking device with which the spacer is releasably held both on pressure and train on the mast or connecting portion.
  • the base carrier may be, for example, a carrier vehicle, or a structure which is releasably attachable to a carrier vehicle.
  • the base support has an at least approximately horizontally extending frame.
  • On the base support can also be provided a winch for moving a drilling carriage along the mast.
  • the mast is pivotally mounted on the base support about a horizontal axis.
  • the mast can be pivotable from an at least approximately horizontal transport position into an at least approximately vertical operating position.
  • the first hydraulic cylinder is hinged at its end facing away from the connecting portion on the base support, and the second hydraulic cylinder articulated at its end facing away from the connecting portion on the mast. It is particularly preferred that the first hydraulic cylinder is articulated on its cylinder housing on the base carrier and / or that the second hydraulic cylinder is articulated on its piston rod on the mast. As a result, the forces to be applied can be further reduced.
  • the spacer is arranged on the mast.
  • the spacer at the connecting portion attached, in particular hinged.
  • the spacer is provided detachably with respect to the mast and moves with the connecting portion as it moves away from the mast during erection of the mast.
  • a further preferred embodiment of the invention is that the spacer is rotatably connected to the coupling rocker.
  • the spacer is rotatably connected to the second hydraulic cylinder, wherein the spacer can then be pivotable relative to the coupling rocker.
  • the spacer may be arranged, for example, on the second hydraulic cylinder. With regard to the design effort, it is particularly preferred that the spacer is arranged on the coupling rocker.
  • the spacer is arranged on the end side of the coupling rocker.
  • the coupling rocker and the spacer suitably together form an L-shape, wherein the angle which is enclosed by the spacer and the coupling rocker, preferably less than 90 °.
  • the spacer is formed integrally with the coupling rocker. According to this embodiment, the spacer and the coupling rocker are fixedly connected to each other and consist of the same material.
  • the spacer has a front face bearing surface for resting on the mast.
  • the spacer may be cylindrical or cuboid.
  • the spacer is formed shorter than the coupling rocker.
  • a corresponding second spacer, on which the spacer according to the invention comes to rest, can be provided on the mast.
  • the two hydraulic cylinders and the coupling rocker are hinged coaxially to each other in the connecting portion.
  • a common pivot axis for the two hydraulic cylinders and the coupling rocker is provided, via which the cylinder and the rocker are connected together.
  • the piston rod of the first hydraulic cylinder is connected to the cylinder housing of the second hydraulic cylinder.
  • a further preferred embodiment is that the spacer extends at least approximately at right angles to a longitudinal axis of the mast when the connecting portion is supported by the spacer on the mast.
  • forces can be introduced into the mast via the spacer in a particularly efficient manner transversely to the longitudinal axis of the mast, that is to say in the direction of erection.
  • the orthogonal arrangement of the spacer is particularly advantageous at the times at which the connecting portion is supported by the spacer on the mast, to which thus the connecting portion rests on the spacer on the mast. At the times when the spacer does not perform supporting tasks and to which the spacer is spaced from the mast, also a different angular position of the spacer may be provided.
  • the design effort can be further reduced by the fact that the mast has a first projection on which the coupling rocker is articulated, and that the mast has a second projection on which the second hydraulic cylinder is articulated.
  • a contact surface is provided for the spacer between the projections.
  • the articulation points for the second hydraulic cylinder and the coupling rocker on the mast preferably have approximately the same distance from the mast longitudinal axis.
  • the contact surface is preferably offset relative to these articulation points and / or the projections to the mast longitudinal axis.
  • a further preferred embodiment of the invention is that the second hydraulic cylinder and the coupling rocker on a first hydraulic cylinder facing Mast Wegseite are hinged to the mast. This is particularly advantageous with regard to the introduction of force into the mast and for geometric reasons.
  • a longitudinally displaceable along the mast drilling carriage is arranged.
  • a drill drive for actuating a drill pipe is expediently provided, which may in particular be a rotary drive.
  • the first hydraulic cylinder has a larger stroke than the second hydraulic cylinder.
  • the first hydraulic cylinder is longer than the second hydraulic cylinder.
  • the spacer is formed shorter than the coupling rocker.
  • a method may be provided in which first the first hydraulic cylinder, in particular completely, is extended, wherein the coupling rocker is supported on the spacer on the mast, and then the second hydraulic cylinder is extended, wherein the spacer of Mast moved away.
  • the coupling rocker rotates during extension of the second cylinder and, preferably together with the spacer, moves away from the mast.
  • FIG. 1 shows the Mast doing in an approximately horizontal transport position, the Figures 5 and 6 in a vertical operating position.
  • FIG. 1 shows, the construction equipment on a base support 10 which is formed as a substantially horizontally extending frame, and which is pushed onto a non-illustrated vehicle for transport purposes.
  • the base support 10 has a total of four extendable supports 15, via which the base support 10 rests on the bottom 99.
  • a drilling carriage 29 is slidably mounted along the mast 20 on the mast 20.
  • the drilling carriage 29 may have, for example, a rotary drive or a rotationally driven drive for a drill pipe, not shown in the figures.
  • a winch 11 is arranged on the base support 10.
  • two hydraulic cylinders 1 and 2 are provided, which are arranged in series.
  • the first hydraulic cylinder 1 is articulated on its one side on the base body 10 and on its opposite other side in a connecting portion 5 on the second hydraulic cylinder 2.
  • the second hydraulic cylinder 2 in turn is hinged on its side facing away from the first hydraulic cylinder 1 and the connecting portion 5 side on the mast 20.
  • a rod-shaped coupling rocker 8 is provided, which hinged at its one end to the mast 20 and at its other end in the connecting portion 5 to the two hydraulic cylinders 1 and 2 is.
  • the two hydraulic cylinders 1 and 2 and the coupling rocker 8 are pivotally connected to each other in the connecting portion 5 about a common pivot axis 6.
  • Fig. 1 shows the second hydraulic cylinder 2 in the transport position of the mast 20 is very flat with respect to the longitudinal axis 100 of the mast 20.
  • the force exerted by the second hydraulic cylinder 2 on the mast 20 forces thus act mainly parallel to the longitudinal axis 100 and only a small portion perpendicular to the longitudinal axis 100 in Aufstellraum 101.
  • a spacer 4 is provided, which protrudes from the connecting portion 5, and which in the in Fig. 1 shown transport position on a front-side support surface 41 longitudinally rests on the mast 20.
  • the spacer 4 is connected on its side facing away from the mast in the connecting section 5 via the pivot axis 6 with the two hydraulic cylinders 1 and 2 and thus can pass on the forces exerted by the first hydraulic cylinder 1 forces to the mast 20.
  • the spacer 4 is arranged on the end of the coupling rocker 8, that is, the spacer 4 rotates with rotation of the coupling rocker 8 relative to the mast 20 with the coupling rocker 8 with, as in Fig. 4 is shown.
  • the spacer 4 extends in the transport position of the mast 20 approximately perpendicular to the longitudinal axis 100 of the mast 20 and thus can be transmitted particularly well in the deployment direction 101 forces.
  • the spacer 4 is in the transport position of the mast 20 with its support surface 41 on a contact surface 24 which is formed on the mast 20 between the two projections 21 and 22 and thus between the articulation point for the second hydraulic cylinder 2 and the articulation point for the coupling rocker 8 ,
  • the contact surface 24 is provided on the rear of the mast 62 of the mast 20.
  • the kinematics when setting up the mast 20 from the transport position to the operating position is in the FIGS. 1 to 5 shown.
  • Fig. 1 shows, the two hydraulic cylinders 1 and 2 are in the transport position of the mast 20 in an at least approximately aligned arrangement and the connecting portion 5 is supported on the mast 20 via the spacer 4.
  • the first hydraulic cylinder 1 is first actuated and extended.
  • the forces acting thereby are at least partially transmitted via the spacer 4 to the mast 20 and the mast 20 thus pivoted up in the erecting direction 101.
  • the second hydraulic cylinder 2 initially retracts and the spacer 4 thus remains on the mast 20. This stage, in which the two hydraulic cylinders 1 and 2 get out of alignment, is in Fig. 2 shown.
  • the first hydraulic cylinder 1 is further extended until it has reached its maximum operating position. This condition is in Fig. 3 shown.
  • the second hydraulic cylinder 2 is extended for further erection of the mast 20, as in Fig. 4 shown.
  • the relative dimensions of the triangle, which is formed by the second hydraulic cylinder 2, the coupling rocker 8 and the mast section between the hydraulic cylinder 2 and coupling rocker 8 change.
  • the mast-distant corner point of the triangle, which coincides with the connecting section 5 is moved away from the mast 20.
  • the coupling rocker 8 is pivoted relative to the mast 20.
  • the spacer 4 which is rotatably connected to the coupling rocker 8 at the mast end facing away from the coupling rocker 8, from the contact surface 24 of the mast 20 dissolves and thus is no longer available for a power transmission.
  • the second hydraulic cylinder 2 is further extended, wherein the spacer 4 is spaced from the mast 20. Finally, the second hydraulic cylinder 2 reaches its maximum stroke. In this position, the in Fig. 5 is shown, the mast 20 has reached its vertical operating position. In this operating position, the two hydraulic cylinders 1 and 2 are again in an at least approximately aligned arrangement.
  • the base support 10 has a mast extension 17, on which the mast 20 stands up in the vertical operating position, and which extends the stroke of the drilling carriage 29.
  • the pivot joint 18 is arranged.
  • Fig. 6 shows the mast 20 is in two parts telescopically formed with a first, lower mast section 27 and a second, upper mast section 28, wherein the second mast section 28 in the first mast section 27 is retractable.
  • a hydraulic cylinder 51 is provided which extends within the two mast sections 27 and 28.
  • the mast 20 is formed so that the drilling carriage 29 along the two mast sections 27 and 28 is displaceable.

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Abstract

The machine has two hydraulic cylinders (1, 2) hinged to a basic support (10) and a rod (20), respectively. A drive rocker (8) is hinged to a side of the rod and to a side of a connection section (5), and a distance piece (4) is arranged on a region of the connection section. The connection section is detachably supported on the rod, and the distance piece is relatively pivoted to the hydraulic cylinders. The distance piece comprises a contact surface (41) for supporting on the rod in a front-sided manner.

Description

Die Erfindung betrifft ein Bauarbeitsgerät mit einem Grundträger, einem Mast, der schwenkbar am Grundträger angeordnet ist, einem ersten Hydraulikzylinder und einem zweiten Hydraulikzylinder zum Aufrichten des Mastes, welche in einem Verbindungsabschnitt gelenkig miteinander verbunden sind, wobei der erste Hydraulikzylinder am Grundträger und der zweite Hydraulikzylinder am Mast angelenkt ist, und einer Koppelschwinge, welche auf einer Seite am Mast und auf einer anderen Seite an dem Verbindungsabschnitt angelenkt ist.The invention relates to a construction work implement with a base support, a mast which is pivotally mounted on the base support, a first hydraulic cylinder and a second hydraulic cylinder for erecting the mast, which are hinged together in a connecting portion, wherein the first hydraulic cylinder on the base support and the second hydraulic cylinder is hinged to the mast, and a coupling rocker, which is articulated on one side of the mast and on another side to the connecting portion.

Ein gattungsgemäßes Bauarbeitsgerät ist aus der US 4,708,581 bekannt. Gemäß dieser Druckschrift wird eine gattungsgemäße Doppelzylinderanordnung zum Aufrichten und Umlegen eines Transferarmes eingesetzt, welcher einen mastartigen Abschnitt aufweist. Der eigentliche Bohrmast wird mittels eines Teleskopzylinders aufgerichtet.A generic construction equipment is from the US 4,708,581 known. According to this publication, a generic double-cylinder arrangement is used for erecting and folding a transfer arm, which has a mast-like section. The actual drilling mast is erected by means of a telescopic cylinder.

Ein weiteres Bauarbeitsgerät mit einem Mast, an dessen Halter zwei Hydraulikzylinder hintereinander angeordnet sind, ist aus der JP 05-202686 A bekannt.Another construction tool with a mast, on the holder two hydraulic cylinders are arranged one behind the other, is from the JP 05-202686 A known.

Die JP 2002-285775 A offenbart ein Bauarbeitsgerät, dessen Mast teleskopierbar ausgeführt ist und mittels eines Hydraulikzylinders um eine horizontale Schwenkachse schwenkbar ist.The JP 2002-285775 A discloses a construction implement, the mast is telescopic and is pivotable about a horizontal pivot axis by means of a hydraulic cylinder.

Aufgabe der Erfindung ist es, ein gattungsgemäßes Bauarbeitsgerät so weiterzubilden, dass eine besonders hohe Zuverlässigkeit und Wirtschaftlichkeit erreicht wird. The object of the invention is to develop a generic construction equipment so that a particularly high reliability and cost-effectiveness is achieved.

Die Aufgabe wird erfindungsgemäß durch ein Bauarbeitsgerät mit den Merkmalen des Anspruchs 1 gelöst. Bevorzugte Ausführungsbeispiele sind in den abhängigen Ansprüchen angegeben.The object is achieved by a construction implement with the features of claim 1. Preferred embodiments are given in the dependent claims.

Das erfindungsgemäße Bauarbeitsgerät ist dadurch gekennzeichnet, dass im Bereich des Verbindungsabschnittes ein Abstandshalter angeordnet ist, durch welchen der Verbindungsabschnitt lösbar am Mast abgestützt ist.The construction work apparatus according to the invention is characterized in that a spacer is arranged in the region of the connecting portion, through which the connecting portion is releasably supported on the mast.

Nach der Erfindung sind zum Aufstellen des Mastes zwei in Reihe gekoppelte Aufstellzylinder vorgesehen, die über eine am Mast angelenkte Koppelschwinge miteinander verbunden sind. Bei einer solchen Anordnung ist der erste Hydraulikzylinder im Eckbereich eines Dreiecks angelenkt, welches von dem zweiten Hydraulikzylinder, der Koppelschwinge und einem zwischen dem zweiten Hydraulikzylinder und der Koppelschwinge verlaufenden Mastabschnitt gebildet wird.According to the invention, two erecting cylinders coupled in series are provided for erecting the mast, which are connected to one another via a coupling rocker articulated on the mast. In such an arrangement, the first hydraulic cylinder is articulated in the corner region of a triangle, which is formed by the second hydraulic cylinder, the coupling rocker and a mast section extending between the second hydraulic cylinder and the coupling rocker.

Die Erfindung hat erkannt, dass bei einer derartigen Zylinderanordnung insbesondere zu Beginn des Aufrichtvorganges unter Umständen relativ hohe Kräfte aufgebracht werden müssen. Dies kann seinen Grund darin haben, dass zu Beginn des Aufrichtvorganges die Hydraulikzylinder, insbesondere der zweite Hydraulikzylinder, vergleichsweise flach zur Mastlängsachse verlaufen. Der von den Zylindern aufgebrachte Kraftvektor verläuft somit flach zur Mastlängsachse und dementsprechend klein ist die Kraftkomponente, welche quer zur Mastlängsachse und somit in Aufstellrichtung wirkt.The invention has recognized that with such a cylinder arrangement, in particular at the beginning of the erection process, relatively high forces may have to be applied. This may be due to the fact that, at the beginning of the erection process, the hydraulic cylinders, in particular the second hydraulic cylinder, run comparatively flat to the mast longitudinal axis. The force applied by the cylinders force vector thus extends flat to the mast longitudinal axis and, accordingly, small is the force component which acts transversely to the mast longitudinal axis and thus in the raising direction.

Ein Grundgedanke der Erfindung liegt in einem Abstandshalter, mit dem sich der Verbindungsabschnitt zwischen dem zweiten Hydraulikzylinder und der Koppelschwinge in der Anfangsphase des Aufrichtvorganges am Mast abstützten kann. Dieser Abstandshalter erlaubt eine zusätzliche Krafteinleitung vom Verbindungsabschnitt in den Mast und kann somit den zweiten Hydraulikzylinder, aber auch die Koppelschwinge entlasten. Insbesondere kann der Abstandshalter steil zur Längsachse des Mastes, bevorzugt unter einem Winkel von zumindest annähernd 90° zur Längsachse des Mastes angeordnet werden, so dass der über den Abstandshalter übertragene Kraftvektor zumindest annähernd in Aufstellrichtung weisen kann. Da somit keine unnötigen Kraftkomponenten senkrecht zur Aufstellrichtung aufgebracht werden müssen, sind die aufzubringenden Kräfte vergleichsweise klein und die Hydraulikzylinder werden entlastet. Insbesondere können die Hydraulikzylinder somit bei gleichem Mastgewicht für kleinere Betriebskräfte ausgelegt werden, so dass die Anschaffungskosten reduziert sind.A basic idea of the invention resides in a spacer with which the connecting section between the second hydraulic cylinder and the coupling rocker can be supported on the mast in the initial phase of the erection process. This spacer allows an additional introduction of force from the connecting portion in the mast and can thus relieve the second hydraulic cylinder, but also the coupling rocker. In particular, the spacer can be arranged steeply relative to the longitudinal axis of the mast, preferably at an angle of at least approximately 90 ° to the longitudinal axis of the mast, so that the force vector transmitted via the spacer can point at least approximately in the erecting direction. Since therefore no unnecessary force components must be applied perpendicular to the installation direction, the forces to be applied are relatively small and the hydraulic cylinders are relieved. In particular, the hydraulic cylinders can thus be designed with the same mast weight for smaller operating forces, so that the initial cost is reduced.

Nach der Erfindung ist der Verbindungsabschnitt lösbar am Mast abgestützt. Der über den Abstandshalter gegebene Kontakt zwischen Verbindungsabschnitt und Mast kann somit gelöst werden, wenn, insbesondere in einem späten Stadium des Aufrichtvorganges, keine Krafteinleitung über den Abstandshalter in den Mast mehr erforderlich ist. Im einfachsten Fall liegt der Abstandshalter für eine lösbare Verbindung am Mast oder am Verbindungsabschnitt auf, das heißt der Mast beziehungsweise der Verbindungsabschnitt bildet einen Anschlag für den Abstandshalter, welcher eine weitere Bewegung des Abstandshalters zum Mast beziehungsweise Verbindungsabschnitt hin begrenzt, ein Ablösen des Abstandshalters durch eine Bewegung vom Mast beziehungsweise Verbindungsabschnitt hinweg jedoch erlaubt. Gemäß dieser Ausführungsform wird der Abstandshalter vom Mast beziehungsweise Verbindungsabschnitt lediglich auf Druck, nicht jedoch auf Zug gehalten. Für eine komplexere Kraftübertragung kann grundsätzlich auch eine Arretiervorrichtung vorgesehen sein, mit welcher der Abstandshalter lösbar sowohl auf Druck als auch auf Zug am Mast beziehungsweise Verbindungsabschnitt gehalten wird.According to the invention, the connecting portion is releasably supported on the mast. The given via the spacer contact between the connecting portion and mast can thus be solved if, especially at a late stage of Aufrichtvorganges, no force on the spacer is required in the mast more. In the simplest case, the spacer for a detachable connection on the mast or on the connecting portion, that is, the mast or the connecting portion forms a stop for the spacer, which limits further movement of the spacer to the mast or connecting portion, a detachment of the spacer by a Movement from the mast or connecting section, however, allowed. According to this embodiment, the spacer is held by the mast or connecting portion only to pressure, but not to train. For a more complex power transmission can in principle also be provided a locking device with which the spacer is releasably held both on pressure and train on the mast or connecting portion.

Bei dem Grundträger kann es sich beispielsweise um ein Trägerfahrzeug handeln, oder um einen Aufbau, welcher lösbar an einem Trägerfahrzeug befestigbar ist. Bevorzugt weist der Grundträger einen zumindest annähernd horizontal verlaufenden Rahmen auf. Am Grundträger kann auch eine Seilwinde zum Verfahren eines Bohrschlittens längs des Mastes vorgesehen sein. Zweckmäßigerweise ist der Mast am Grundträger um eine horizontal verlaufende Achse schwenkbar angeordnet. Insbesondere kann der Mast aus einer zumindest annähernd horizontal verlaufenden Transportposition in eine zumindest annähernd vertikal verlaufende Betriebsposition schwenkbar sein. Erfindungsgemäß ist der erste Hydraulikzylinder an seinem dem Verbindungsabschnitt abgewandten Ende am Grundträger angelenkt, und der zweite Hydraulikzylinder an seinem dem Verbindungsabschnitt abgewandten Ende am Mast angelenkt. Besonders bevorzugt ist es, dass der erste Hydraulikzylinder an seinem Zylindergehäuse am Grundträger angelenkt ist und/oder dass der zweite Hydraulikzylinder an seiner Kolbenstange am Mast angelenkt ist. Hierdurch können die aufzubringenden Kräfte weiter reduziert werden.The base carrier may be, for example, a carrier vehicle, or a structure which is releasably attachable to a carrier vehicle. Preferably, the base support has an at least approximately horizontally extending frame. On the base support can also be provided a winch for moving a drilling carriage along the mast. Conveniently, the mast is pivotally mounted on the base support about a horizontal axis. In particular, the mast can be pivotable from an at least approximately horizontal transport position into an at least approximately vertical operating position. According to the first hydraulic cylinder is hinged at its end facing away from the connecting portion on the base support, and the second hydraulic cylinder articulated at its end facing away from the connecting portion on the mast. It is particularly preferred that the first hydraulic cylinder is articulated on its cylinder housing on the base carrier and / or that the second hydraulic cylinder is articulated on its piston rod on the mast. As a result, the forces to be applied can be further reduced.

Grundsätzlich kann vorgesehen sein, dass der Abstandshalter am Mast angeordnet ist. Besonders bevorzugt ist es jedoch, dass der Abstandshalter am Verbindungsabschnitt befestigt, insbesondere gelenkig befestigt ist. Gemäß dieser Ausführungsform ist der Abstandshalter bezüglich dem Mast lösbar vorgesehen und bewegt sich mit dem Verbindungsabschnitt mit, wenn sich dieser beim Aufstellen des Mastes vom Mast weg bewegt. Diese Ausführungsform kann in konstruktiv besonders einfacher Weise realisiert werden.In principle, it can be provided that the spacer is arranged on the mast. However, it is particularly preferred that the spacer at the connecting portion attached, in particular hinged. According to this embodiment, the spacer is provided detachably with respect to the mast and moves with the connecting portion as it moves away from the mast during erection of the mast. This embodiment can be realized in a structurally particularly simple manner.

Eine weitere bevorzugte Ausführungsform der Erfindung liegt darin, dass der Abstandshalter drehfest mit der Koppelschwinge verbunden ist. Hierdurch kann in konstruktiv besonders einfacher und wirtschaftlicher Weise sichergestellt werden, dass der Abstandshalter beim Einfahren des zweiten Hydraulikzylinders automatisch seine korrekte Position zur Anlage am Mast einnimmt. Insbesondere kann vorgesehen sein, dass der Abstandshalter relativ zum ersten Hydraulikzylinder und zum zweiten Hydraulikzylinder schwenkbar ist.A further preferred embodiment of the invention is that the spacer is rotatably connected to the coupling rocker. As a result, it can be ensured in a structurally particularly simple and economical manner that, when the second hydraulic cylinder retracts, the spacer automatically assumes its correct position for engagement with the mast. In particular, it can be provided that the spacer is pivotable relative to the first hydraulic cylinder and the second hydraulic cylinder.

Alternativ kann vorgesehen sein, dass der Abstandshalter drehfest mit dem zweiten Hydraulikzylinder verbunden ist, wobei der Abstandshalter dann relativ zur Koppelschwinge schwenkbar sein kann.Alternatively it can be provided that the spacer is rotatably connected to the second hydraulic cylinder, wherein the spacer can then be pivotable relative to the coupling rocker.

Der Abstandshalter kann beispielsweise am zweiten Hydraulikzylinder angeordnet sein. Hinsichtlich des konstruktiven Aufwandes ist es besonders bevorzugt, dass der Abstandshalter an der Koppelschwinge angeordnet ist.The spacer may be arranged, for example, on the second hydraulic cylinder. With regard to the design effort, it is particularly preferred that the spacer is arranged on the coupling rocker.

Der konstruktive Aufwand kann weiter dadurch verringert werden, dass der Abstandshalter endseitig an der Koppelschwinge angeordnet ist. In diesem Fall bilden die Koppelschwinge und der Abstandshalter zweckmäßigerweise zusammen eine L-Form, wobei der Winkel, welcher vom Abstandshalter und der Koppelschwinge eingeschlossen wird, vorzugsweise kleiner als 90° ist.The design effort can be further reduced by the fact that the spacer is arranged on the end side of the coupling rocker. In this case, the coupling rocker and the spacer suitably together form an L-shape, wherein the angle which is enclosed by the spacer and the coupling rocker, preferably less than 90 °.

Hinsichtlich des Herstellungsaufwandes ist es weiterhin bevorzugt, dass der Abstandshalter integral mit der Koppelschwinge ausgebildet ist. Gemäß dieser Ausführungsform sind der Abstandshalter und die Koppelschwinge miteinander fest verbunden und bestehen aus demselben Material.With regard to the manufacturing effort, it is further preferred that the spacer is formed integrally with the coupling rocker. According to this embodiment, the spacer and the coupling rocker are fixedly connected to each other and consist of the same material.

Der konstruktive Aufwand kann weiter dadurch verringert werden, dass der Abstandshalter stirnseitig eine Auflagefläche zur Auflage am Mast aufweist. Beispielsweise kann der Abstandshalter zylindrisch oder quaderförmig ausgebildet sein. Zweckmäßigerweise ist der Abstandshalter kürzer als die Koppelschwinge ausgebildet. Grundsätzlich kann am Mast ein korrespondierender zweiter Abstandshalter vorgesehen sein, an welchem der erfindungsgemäße Abstandshalter zur Auflage kommt.The design effort can be further reduced by the fact that the spacer has a front face bearing surface for resting on the mast. For example, the spacer may be cylindrical or cuboid. Conveniently, the spacer is formed shorter than the coupling rocker. In principle, a corresponding second spacer, on which the spacer according to the invention comes to rest, can be provided on the mast.

Im Hinblick auf die Kraftaufnahme ist es überdies vorteilhaft, dass die beiden Hydraulikzylinder und die Koppelschwinge im Verbindungsabschnitt koaxial aneinander angelenkt sind. Gemäß dieser Ausführungsform ist eine gemeinsame Schwenkachse für die beiden Hydraulikzylinder und die Koppelschwinge vorgesehen, über welche die Zylinder und die Schwinge miteinander verbunden sind. Zweckmäßigerweise ist im Verbindungsabschnitt die Kolbenstange des ersten Hydraulikzylinders mit dem Zylindergehäuse des zweiten Hydraulikzylinders verbunden.With regard to the power consumption, it is also advantageous that the two hydraulic cylinders and the coupling rocker are hinged coaxially to each other in the connecting portion. According to this embodiment, a common pivot axis for the two hydraulic cylinders and the coupling rocker is provided, via which the cylinder and the rocker are connected together. Appropriately, in the connecting portion, the piston rod of the first hydraulic cylinder is connected to the cylinder housing of the second hydraulic cylinder.

Eine weitere bevorzugte Ausführungsform besteht darin, dass der Abstandshalter zumindest annähernd rechtwinklig zu einer Längsachse des Mastes verläuft, wenn der Verbindungsabschnitt durch den Abstandshalter am Mast abgestützt ist. Gemäß dieser Ausführungsform können über den Abstandshalter in besonders effizienter Weise quer zur Längsachse des Mastes, also in Aufstellrichtung weisende Kräfte in den Mast eingeleitet werden. Die rechtwinklige Anordnung des Abstandshalters ist insbesondere zu den Zeitpunkten vorteilhaft, zu denen der Verbindungsabschnitt durch den Abstandshalter am Mast abgestützt wird, zu denen also der Verbindungsabschnitt über den Abstandshalter am Mast anliegt. Zu den Zeitpunkten, zu denen der Abstandshalter keine Stützaufgaben wahrnimmt und zu denen der Abstandshalter vom Mast beabstandet ist, kann auch eine andere Winkelposition des Abstandshalters vorgesehen sein.A further preferred embodiment is that the spacer extends at least approximately at right angles to a longitudinal axis of the mast when the connecting portion is supported by the spacer on the mast. According to this embodiment, forces can be introduced into the mast via the spacer in a particularly efficient manner transversely to the longitudinal axis of the mast, that is to say in the direction of erection. The orthogonal arrangement of the spacer is particularly advantageous at the times at which the connecting portion is supported by the spacer on the mast, to which thus the connecting portion rests on the spacer on the mast. At the times when the spacer does not perform supporting tasks and to which the spacer is spaced from the mast, also a different angular position of the spacer may be provided.

Der konstruktive Aufwand kann weiter dadurch verringert werden, dass der Mast einen ersten Vorsprung aufweist, an welchem die Koppelschwinge angelenkt ist, und dass der Mast einen zweiten Vorsprung aufweist, an welchem der zweite Hydraulikzylinder angelenkt ist. Zweckmäßigerweise ist zwischen den Vorsprüngen eine Anlagefläche für den Abstandshalter vorgesehen. Die Anlenkpunkte für den zweiten Hydraulikzylinder und die Koppelschwinge am Mast weisen bevorzugt etwa denselben Abstand von der Mastlängsachse auf. Die Anlagefläche ist vorzugsweise gegenüber diesen Anlenkpunkten und/oder den Vorsprüngen zur Mastlängsachse hin versetzt.The design effort can be further reduced by the fact that the mast has a first projection on which the coupling rocker is articulated, and that the mast has a second projection on which the second hydraulic cylinder is articulated. Appropriately, a contact surface is provided for the spacer between the projections. The articulation points for the second hydraulic cylinder and the coupling rocker on the mast preferably have approximately the same distance from the mast longitudinal axis. The contact surface is preferably offset relative to these articulation points and / or the projections to the mast longitudinal axis.

Eine weitere bevorzugte Ausführungsform der Erfindung besteht darin, dass der zweite Hydraulikzylinder und die Koppelschwinge auf einer dem ersten Hydraulikzylinder zugewandten Mastrückseite am Mast angelenkt sind. Dies ist im Hinblick auf die Krafteinleitung in den Mast und aus geometrischen Gründen besonders vorteilhaft.A further preferred embodiment of the invention is that the second hydraulic cylinder and the coupling rocker on a first hydraulic cylinder facing Mastrückseite are hinged to the mast. This is particularly advantageous with regard to the introduction of force into the mast and for geometric reasons.

Weiterhin ist es nach der Erfindung besonders bevorzugt, dass, insbesondere auf einer dem ersten Hydraulikzylinder abgewandten Mastvorderseite, ein längs des Mastes verschiebbarer Bohrschlitten angeordnet ist. An diesem Bohrschlitten ist zweckmäßigerweise ein Bohrantrieb zum Betätigen eines Bohrgestänges vorgesehen, bei dem es sich insbesondere um einen Drehantrieb handeln kann.Furthermore, it is particularly preferred according to the invention that, in particular on a side facing away from the first hydraulic cylinder mast front side, a longitudinally displaceable along the mast drilling carriage is arranged. At this drill a drill drive for actuating a drill pipe is expediently provided, which may in particular be a rotary drive.

Ferner ist es besonders zweckmäßig, dass der erste Hydraulikzylinder einen größeren Hub aufweist als der zweite Hydraulikzylinder. Hierdurch können besonders kompakte Abmessungen realisiert werden. Zweckmäßigerweise ist der erste Hydraulikzylinder länger als der zweite Hydraulikzylinder.Furthermore, it is particularly expedient that the first hydraulic cylinder has a larger stroke than the second hydraulic cylinder. As a result, particularly compact dimensions can be realized. Conveniently, the first hydraulic cylinder is longer than the second hydraulic cylinder.

Insbesondere im Hinblick auf die Geräteabmessungen ist es weiterhin vorteilhaft, dass der Abstandshalter kürzer ausgebildet ist als die Koppelschwinge.In particular, with regard to the device dimensions, it is also advantageous that the spacer is formed shorter than the coupling rocker.

Zum Aufstellen des Mastes eines erfindungsgemäßen Bauarbeitsgerätes kann ein Verfahren vorgesehen werden, bei dem zunächst der erste Hydraulikzylinder, insbesondere vollständig, ausgefahren wird, wobei sich die Koppelschwinge über den Abstandshalter am Mast abstützt, und anschließend der zweite Hydraulikzylinder ausgefahren wird, wobei sich der Abstandshalter vom Mast weg bewegt. Insbesondere kann vorgesehen sein, dass sich die Koppelschwinge beim Ausfahren des zweiten Zylinders verdreht und, vorzugsweise mitsamt dem Abstandshalter, vom Mast weg bewegt.To set up the mast of a construction implement according to the invention, a method may be provided in which first the first hydraulic cylinder, in particular completely, is extended, wherein the coupling rocker is supported on the spacer on the mast, and then the second hydraulic cylinder is extended, wherein the spacer of Mast moved away. In particular, it can be provided that the coupling rocker rotates during extension of the second cylinder and, preferably together with the spacer, moves away from the mast.

Die Erfindung wird nachfolgend anhand bevorzugter Ausführungsbeispiele näher erläutert, die schematisch in den beiliegenden Figuren dargestellt sind. In den Figuren zeigen:

Figuren 1 bis 6
ein Ausführungsbeispiel eines erfindungsgemäßen Bauar- beitsgerätes in verschiedenen Stadien beim Aufrichten des Mastes in Seitenansicht.
The invention will be explained in more detail below with reference to preferred embodiments, which are shown schematically in the accompanying figures. In the figures show:
FIGS. 1 to 6
An embodiment of a Bauur- beitsgerätes invention in various stages when erecting the mast in side view.

Ein Ausführungsbeispiel eines erfindungsgemäßen Bauarbeitsgerätes ist in verschiedenen Stadien beim Aufrichten des Mastes in den Figuren 1 bis 6 gezeigt. Fig. 1 zeigt den Mast dabei in einer annähernd horizontalen Transportstellung, die Figuren 5 und 6 in einer vertikalen Betriebsstellung.An embodiment of a construction apparatus according to the invention is in various stages when erecting the mast in the FIGS. 1 to 6 shown. Fig. 1 shows the Mast doing in an approximately horizontal transport position, the Figures 5 and 6 in a vertical operating position.

Wie beispielsweise Fig. 1 zeigt, weist das Bauarbeitsgerät einen Grundträger 10 auf, der als im Wesentlichen horizontal verlaufender Rahmen ausgebildet ist, und der zu Transportzwecken auf ein nicht dargestelltes Fahrzeug aufschiebbar ist. Der Grundträger 10 weist insgesamt vier ausfahrbare Stützen 15 auf, über welche der Grundträger 10 auf dem Boden 99 aufsteht.Like for example Fig. 1 shows, the construction equipment on a base support 10 which is formed as a substantially horizontally extending frame, and which is pushed onto a non-illustrated vehicle for transport purposes. The base support 10 has a total of four extendable supports 15, via which the base support 10 rests on the bottom 99.

Über ein Schwenkgelenk 18 mit horizontaler Schwenkachse ist am Grundträger 10 ein Mast 20 zwischen der in Fig. 1 dargestellten Transportposition und der in den Figuren 5 und 6 dargestellten vertikalen Betriebsposition schwenkbar angelenkt. An einer Mastvorderseite 61 des Mastes 20 ist am Mast 20 ein Bohrschlitten 29 längs des Mastes 20 verschiebbar gelagert. Der Bohrschlitten 29 kann der beispielsweise einen Drehantrieb oder einen drehschlagenden Antrieb für ein in den Figuren nicht dargestelltes Bohrgestänge aufweisen. Zum Längsverschieben des Bohrschlittens 29 längs des Mastes 20 ist am Grundträger 10 eine Seilwinde 11 angeordnet.About a pivot joint 18 with a horizontal pivot axis is on the base support 10, a mast 20 between the in Fig. 1 shown transport position and in the Figures 5 and 6 pivoted shown illustrated vertical operating position. On a mast front side 61 of the mast 20, a drilling carriage 29 is slidably mounted along the mast 20 on the mast 20. The drilling carriage 29 may have, for example, a rotary drive or a rotationally driven drive for a drill pipe, not shown in the figures. For longitudinal displacement of the drilling carriage 29 along the mast 20, a winch 11 is arranged on the base support 10.

Zum Aufrichten des Mastes 20 aus der in Fig. 1 dargestellten Transportstellung in die in den Figuren 5 und 6 dargestellte Betriebsstellung sind zwei Hydraulikzylinder 1 und 2 vorgesehen, die in Serie angeordnet sind. Der erste Hydraulikzylinder 1 ist auf seiner einen Seite am Grundkörper 10 und auf seiner gegenüberliegenden anderen Seite in einem Verbindungsabschnitt 5 am zweiten Hydraulikzylinder 2 angelenkt. Der zweite Hydraulikzylinder 2 wiederum ist auf seiner dem ersten Hydraulikzylinder 1 und dem Verbindungsabschnitt 5 abgewandten Seite am Mast 20 angelenkt. Die Anlenkung des ersten Hydraulikzylinders 1 am Grundkörper 10 erfolgt über das Zylindergehäuse des ersten Hydraulikzylinders 1, wohingegen die Anlenkung des zweiten Hydraulikzylinders 2 am Mast 20 über die Kolbenstange des zweiten Hydraulikzylinders 2 erfolgt, das heißt der Verbindungsabschnitt 5 verbindet die Kolbenstange des ersten Hydraulikzylinders 1 mit dem Zylindergehäuse des zweiten Hydraulikzylinders 2.To erect the mast 20 from the in Fig. 1 shown transport position in the in the Figures 5 and 6 shown operating position, two hydraulic cylinders 1 and 2 are provided, which are arranged in series. The first hydraulic cylinder 1 is articulated on its one side on the base body 10 and on its opposite other side in a connecting portion 5 on the second hydraulic cylinder 2. The second hydraulic cylinder 2 in turn is hinged on its side facing away from the first hydraulic cylinder 1 and the connecting portion 5 side on the mast 20. The articulation of the first hydraulic cylinder 1 on the base body 10 via the cylinder housing of the first hydraulic cylinder 1, whereas the articulation of the second hydraulic cylinder 2 takes place on the mast 20 via the piston rod of the second hydraulic cylinder 2, that is, the connecting portion 5 connects the piston rod of the first hydraulic cylinder 1 with the cylinder housing of the second hydraulic cylinder. 2

Damit der Verbindungsabschnitt 5 zwischen den beiden Hydraulikzylindern 1 und 2 beim Aufrichten des Mastes 20 nicht ausknickt, ist eine stabförmige Koppelschwinge 8 vorgesehen, welche an ihrem einen Ende am Mast 20 und an ihrem anderen Ende im Verbindungsabschnitt 5 an den beiden Hydraulikzylindern 1 und 2 angelenkt ist. Die beiden Hydraulikzylinder 1 und 2 und die Koppelschwinge 8 sind dabei im Verbindungsabschnitt 5 um eine gemeinsame Schwenkachse 6 schwenkbar miteinander verbunden. Die Schwenkachse des Schwenkgelenks 18, die gemeinsame Schwenkachse 6, die Schwenkachse der Anlenkung des ersten Hydraulikzylinders 1 am Grundkörper 10, die Schwenkachse der Anlenkung des zweiten Hydraulikzylinders 2 am Mast 20 sowie die Schwenkachse der Anlenkung der Koppelschwinge 8 am Mast 20 verlaufen parallel zueinander.So that the connecting portion 5 between the two hydraulic cylinders 1 and 2 does not buckle during erection of the mast 20, a rod-shaped coupling rocker 8 is provided, which hinged at its one end to the mast 20 and at its other end in the connecting portion 5 to the two hydraulic cylinders 1 and 2 is. The two hydraulic cylinders 1 and 2 and the coupling rocker 8 are pivotally connected to each other in the connecting portion 5 about a common pivot axis 6. The pivot axis of the pivot joint 18, the common pivot axis 6, the pivot axis of the articulation of the first hydraulic cylinder 1 on the base body 10, the pivot axis of the articulation of the second hydraulic cylinder 2 on the mast 20 and the pivot axis of the articulation of the coupling rocker 8 on the mast 20 parallel to each other.

Auf einer der Mastvorderseite 61 abgewandten Mastrückseite 62, welche dem ersten Hydraulikzylinder 1 zugewandt ist und welche in der in Fig. 1 dargestellten Transportposition auch dem Grundträger 10 zugewandt ist, sind am Mast 20 zwei Vorsprünge 21 und 22 vorgesehen. Am ersten Vorsprung 21 ist die Koppelschwinge 8 angelenkt und am zweiten Vorsprung 22 der zweite Hydraulikzylinder 2.On a mast front side 61 facing away Mastrückseite 62, which faces the first hydraulic cylinder 1 and which in the in Fig. 1 shown transport position and the base support 10 faces, two projections 21 and 22 are provided on the mast 20. At the first projection 21, the coupling rocker 8 is articulated and at the second projection 22 of the second hydraulic cylinder. 2

Wie insbesondere Fig. 1 zeigt, verläuft der zweite Hydraulikzylinder 2 in der Transportstellung des Mastes 20 sehr flach bezüglich der Längsachse 100 des Mastes 20. Die vom zweiten Hydraulikzylinder 2 auf den Mast 20 ausgeübten Kräfte wirken somit vorwiegend parallel zur Längsachse 100 und nur zu einem geringen Teil senkrecht zur Längsachse 100 in Aufstellrichtung 101. Insbesondere um auch in diesem Falle eine besonders wirksame Kraftübertragung vom ersten Hydraulikzylinder 1 auf den Mast 20 in Aufstellrichtung 101 gewährleisten zu können, ist ein Abstandshalter 4 vorgesehen, welcher vom Verbindungsabschnitt 5 vorsteht, und welcher in der in Fig. 1 dargestellten Transportstellung an einer stirnseitigen Auflagefläche 41 längsseitig am Mast 20 anliegt. Der Abstandshalter 4 ist auf seiner mastabgewandten Seite im Verbindungsabschnitt 5 über die Schwenkachse 6 mit den beiden Hydraulikzylindern 1 und 2 verbunden und kann somit die vom ersten Hydraulikzylinder 1 ausgeübten Kräfte an den Mast 20 weitergeben.In particular Fig. 1 shows the second hydraulic cylinder 2 in the transport position of the mast 20 is very flat with respect to the longitudinal axis 100 of the mast 20. The force exerted by the second hydraulic cylinder 2 on the mast 20 forces thus act mainly parallel to the longitudinal axis 100 and only a small portion perpendicular to the longitudinal axis 100 in Aufstellrichtung 101. In particular, in order to ensure a particularly effective power transmission from the first hydraulic cylinder 1 to the mast 20 in the erecting direction 101 in this case, a spacer 4 is provided, which protrudes from the connecting portion 5, and which in the in Fig. 1 shown transport position on a front-side support surface 41 longitudinally rests on the mast 20. The spacer 4 is connected on its side facing away from the mast in the connecting section 5 via the pivot axis 6 with the two hydraulic cylinders 1 and 2 and thus can pass on the forces exerted by the first hydraulic cylinder 1 forces to the mast 20.

Der Abstandshalter 4 ist endseitig an der Koppelschwinge 8 angeordnet, das heißt der Abstandshalter 4 dreht sich bei Drehung der Koppelschwinge 8 relativ zum Mast 20 mit der Koppelschwinge 8 mit, wie beispielsweise in Fig. 4 gezeigt ist. Wie Fig. 1 zeigt, verläuft der Abstandshalter 4 in der Transportstellung des Mastes 20 etwa senkrecht zur Längsachse 100 des Mastes 20 und kann somit in Aufstellrichtung 101 wirkende Kräfte besonders gut übertragen.The spacer 4 is arranged on the end of the coupling rocker 8, that is, the spacer 4 rotates with rotation of the coupling rocker 8 relative to the mast 20 with the coupling rocker 8 with, as in Fig. 4 is shown. As Fig. 1 shows, the spacer 4 extends in the transport position of the mast 20 approximately perpendicular to the longitudinal axis 100 of the mast 20 and thus can be transmitted particularly well in the deployment direction 101 forces.

Der Abstandshalter 4 liegt in der Transportstellung des Mastes 20 mit seiner Auflagefläche 41 an einer Anlagefläche 24 an, die am Mast 20 zwischen den beiden Vorsprüngen 21 und 22 und somit zwischen dem anlenkpunkt für den zweiten Hydraulikzylinder 2 und dem Anlenkpunkt für die Koppelschwinge 8 ausgebildet ist. Die Anlagefläche 24 ist auf der Mastrückseite 62 des Mastes 20 vorgesehen.The spacer 4 is in the transport position of the mast 20 with its support surface 41 on a contact surface 24 which is formed on the mast 20 between the two projections 21 and 22 and thus between the articulation point for the second hydraulic cylinder 2 and the articulation point for the coupling rocker 8 , The contact surface 24 is provided on the rear of the mast 62 of the mast 20.

Die Kinematik beim Aufstellen des Mastes 20 aus der Transportposition in die Betriebsposition ist in den Figuren 1 bis 5 dargestellt.The kinematics when setting up the mast 20 from the transport position to the operating position is in the FIGS. 1 to 5 shown.

Wie Fig. 1 zeigt, befinden sich die beiden Hydraulikzylinder 1 und 2 in der Transportposition des Mastes 20 in einer zumindest annähernd fluchtenden Anordnung und der Verbindungsabschnitt 5 wird über den Abstandshalter 4 am Mast 20 abgestützt.As Fig. 1 shows, the two hydraulic cylinders 1 and 2 are in the transport position of the mast 20 in an at least approximately aligned arrangement and the connecting portion 5 is supported on the mast 20 via the spacer 4.

Zum Aufrichten des Mastes 20 wird zunächst der erste Hydraulikzylinder 1 betätigt und ausgefahren. Die dabei wirkenden Kräfte werden zumindest teilweise über den Abstandshalter 4 an den Mast 20 übertragen und der Mast 20 somit in Aufstellrichtung 101 hochgeschwenkt. Der zweite Hydraulikzylinder 2 bleibt zunächst eingefahren und der Abstandshalter 4 bleibt somit am Mast 20 liegen. Dieses Stadium, bei dem die beiden Hydraulikzylinder 1 und 2 aus der fluchtenden Anordnung gelangen, ist in Fig. 2 dargestellt.To erect the mast 20, the first hydraulic cylinder 1 is first actuated and extended. The forces acting thereby are at least partially transmitted via the spacer 4 to the mast 20 and the mast 20 thus pivoted up in the erecting direction 101. The second hydraulic cylinder 2 initially retracts and the spacer 4 thus remains on the mast 20. This stage, in which the two hydraulic cylinders 1 and 2 get out of alignment, is in Fig. 2 shown.

Der erste Hydraulikzylinder 1 wird weiter ausgefahren, bis dieser seine maximale Betriebsposition erreicht hat. Dieser Zustand ist in Fig. 3 dargestellt.The first hydraulic cylinder 1 is further extended until it has reached its maximum operating position. This condition is in Fig. 3 shown.

Ist der maximale Hub des ersten Hydraulikzylinders 1 erreicht, wird der zweite Hydraulikzylinder 2 zum weiteren Aufrichten des Mastes 20 ausgefahren, wie in Fig. 4 dargestellt. Durch Betätigung des zweiten Hydraulikzylinders 2 ändern sich die relativen Abmessungen des Dreiecks, welches durch den zweiten Hydraulikzylinder 2, die Koppelschwinge 8 und den Mastabschnitt zwischen Hydraulikzylinder 2 und Koppelschwinge 8 gebildet wird. Insbesondere wird der mastferne Eckpunkt des Dreiecks, der mit dem Verbindungsabschnitt 5 zusammenfällt, vom Mast 20 hinweg gefahren. Hierbei wird die Koppelschwinge 8 relativ zum Mast 20 verschwenkt. Hierbei wiederum löst sich der Abstandshalter 4, der am mastabgewandten Ende der Koppelschwinge 8 drehfest mit der Koppelschwinge 8 verbunden ist, von der Anlagefläche 24 des Mastes 20 ab und steht somit fortan für eine Kraftübertragung nicht mehr zur Verfügung.If the maximum stroke of the first hydraulic cylinder 1 is reached, the second hydraulic cylinder 2 is extended for further erection of the mast 20, as in Fig. 4 shown. By operating the second hydraulic cylinder 2, the relative dimensions of the triangle, which is formed by the second hydraulic cylinder 2, the coupling rocker 8 and the mast section between the hydraulic cylinder 2 and coupling rocker 8 change. In particular, the mast-distant corner point of the triangle, which coincides with the connecting section 5, is moved away from the mast 20. Here, the coupling rocker 8 is pivoted relative to the mast 20. In this case, in turn, the spacer 4, which is rotatably connected to the coupling rocker 8 at the mast end facing away from the coupling rocker 8, from the contact surface 24 of the mast 20 dissolves and thus is no longer available for a power transmission.

Der zweite Hydraulikzylinder 2 wird weiter ausgefahren, wobei der Abstandshalter 4 vom Mast 20 beabstandet bleibt. Schließlich erreicht auch der zweite Hydraulikzylinder 2 seinen maximalen Hub. In dieser Position, die in Fig. 5 dargestellt ist, hat der Mast 20 seine vertikale Betriebsstellung erreicht. In dieser Betriebsstellung befinden sich auch die beiden Hydraulikzylinder 1 und 2 wieder in einer zumindest annähernd fluchtenden Anordnung.The second hydraulic cylinder 2 is further extended, wherein the spacer 4 is spaced from the mast 20. Finally, the second hydraulic cylinder 2 reaches its maximum stroke. In this position, the in Fig. 5 is shown, the mast 20 has reached its vertical operating position. In this operating position, the two hydraulic cylinders 1 and 2 are again in an at least approximately aligned arrangement.

Wie insbesondere Fig. 1 und 5 zeigt, weist der Grundträger 10 eine Mastverlängerung 17 auf, auf welcher der Mast 20 in der vertikalen Betriebsposition aufsteht, und welche den Hub des Bohrschlittens 29 verlängert. An dieser Mastverlängerung 17 ist das Schwenkgelenk 18 angeordnet.In particular Fig. 1 and 5 shows, the base support 10 has a mast extension 17, on which the mast 20 stands up in the vertical operating position, and which extends the stroke of the drilling carriage 29. At this mast extension 17, the pivot joint 18 is arranged.

Wie Fig. 6 zeigt, ist der Mast 20 zweiteilig teleskopierbar mit einem ersten, unteren Mastabschnitt 27 und einem zweiten, oberen Mastabschnitt 28 ausgebildet, wobei der zweite Mastabschnitt 28 in den ersten Mastabschnitt 27 einfahrbar ist. Zum Verschieben der beiden Mastabschnitte 27 und 28 relativ zueinander ist ein Hydraulikzylinder 51 vorgesehen, der innerhalb der beiden Mastabschnitte 27 und 28 verläuft. Zweckmäßigerweise ist der Mast 20 so ausgebildet, dass der Bohrschlitten 29 längs der beiden Mastabschnitte 27 und 28 verschiebbar ist.As Fig. 6 shows the mast 20 is in two parts telescopically formed with a first, lower mast section 27 and a second, upper mast section 28, wherein the second mast section 28 in the first mast section 27 is retractable. To move the two mast sections 27 and 28 relative to each other, a hydraulic cylinder 51 is provided which extends within the two mast sections 27 and 28. Conveniently, the mast 20 is formed so that the drilling carriage 29 along the two mast sections 27 and 28 is displaceable.

Claims (11)

  1. Construction apparatus comprising
    - a base carrier (10),
    - a mast (20), which is arranged on the base carrier (10) in a pivotable manner,
    - a first hydraulic cylinder (1) and a second hydraulic cylinder (2) for erecting the mast (20), which are connected to each other in an articulated manner in a connection section (5),
    - wherein the first hydraulic cylinder (1) being linked to the base carrier (10) and the second hydraulic cylinder (2) being linked to the mast (20), and
    - a coupling rocker-arm (8) which is linked on one side to the mast (20) and on another side to the connection section (5),
    characterized in that
    - in the part of the connection section (5) a spacer (4) is arranged, through which the connection section (5) is supported on the mast (20) in a detachable manner.
  2. Construction apparatus according to claim 1,
    characterized in that
    the spacer (4) is fixed to the connection section (5) in an articulated manner.
  3. Construction apparatus according to one of the preceeding claims,
    characterized in that
    the spacer (4) is connected in a rotationally fixed manner to the coupling rocker-arm (8) and the spacer (4) can be pivoted relative to the first hydraulic cylinder (1) and to the second hydraulic cylinder (2).
  4. Construction apparatus according to one of the preceeding claims,
    characterized in that
    the spacer (4) is arranged at the end of the coupling rocker-arm (8).
  5. Construction apparatus according to one of the preceeding claims,
    characterized in that
    the spacer (4) is formed integrally with the coupling rocker-arm (8).
  6. Construction apparatus according to one of the preceeding claims,
    characterized in that
    the spacer (4) has at its front face a supporting surface (41) for support on the mast (20).
  7. Construction apparatus according to one of the preceeding claims,
    characterized in that
    the two hydraulic cylinders (1,2) and the coupling rocker-arm (8) are linked to one another coaxially in the connection section (5).
  8. Construction apparatus according to one of the preceeding claims,
    characterized in that
    the spacer (4) extends at least approximately rectangulary to a longitudinal axis (100) of the mast (20), when the connecting section (5) is supported by the spacer (4) on the mast (20).
  9. Construction apparatus according to one of the preceeding claims,
    characterized in that
    the mast (20) has a first projection (21) to which the coupling rocker-arm (8) is linked, the mast (20) has a second projection (22) to which the second hydraulic cylinder (2) is linked and
    a contact surface (24) for the spacer (4) is provided between the projections (21, 22)
  10. Construction apparatus according to one of the preceeding claims, characterized in that
    the second hydraulic cylinder (2) and the coupling rocker-arm (8) are linked to the mast (20) on a mast rear side (62) facing towards the first hydraulic cylinder (1) and
    on a mast's front side (61) facing away from the first hydraulic cylinder (1) a drilling sledge (29) is arranged which can be displaced longitudinally on the mast (20).
  11. Construction apparatus according to one of the preceeding claims,
    characterized in that
    the first hydraulic cylinder (1) has a greater stroke than the second hydraulic cylinder (2) and
    the spacer (4) is designed shorter than the coupling rocker-arm (8).
EP09005678A 2008-06-13 2009-04-22 Construction device with rotatable mast Not-in-force EP2146027B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202008007970U DE202008007970U1 (en) 2008-06-13 2008-06-13 Construction work tool with swiveling mast

Publications (2)

Publication Number Publication Date
EP2146027A1 EP2146027A1 (en) 2010-01-20
EP2146027B1 true EP2146027B1 (en) 2011-07-20

Family

ID=39736725

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09005678A Not-in-force EP2146027B1 (en) 2008-06-13 2009-04-22 Construction device with rotatable mast

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US (1) US8046959B2 (en)
EP (1) EP2146027B1 (en)
AT (1) ATE517219T1 (en)
BR (1) BRPI0901776A2 (en)
CA (1) CA2666892C (en)
DE (1) DE202008007970U1 (en)
EA (1) EA014377B1 (en)
ES (1) ES2368599T3 (en)

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Also Published As

Publication number Publication date
EA200900598A1 (en) 2009-12-30
EA014377B1 (en) 2010-10-29
BRPI0901776A2 (en) 2010-04-13
CA2666892A1 (en) 2009-12-13
CA2666892C (en) 2011-08-02
ATE517219T1 (en) 2011-08-15
DE202008007970U1 (en) 2008-09-04
ES2368599T3 (en) 2011-11-18
US8046959B2 (en) 2011-11-01
US20090320385A1 (en) 2009-12-31
EP2146027A1 (en) 2010-01-20

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