EP2133508A1 - Construction device with extendable mast and method for operation of same - Google Patents
Construction device with extendable mast and method for operation of same Download PDFInfo
- Publication number
- EP2133508A1 EP2133508A1 EP08010845A EP08010845A EP2133508A1 EP 2133508 A1 EP2133508 A1 EP 2133508A1 EP 08010845 A EP08010845 A EP 08010845A EP 08010845 A EP08010845 A EP 08010845A EP 2133508 A1 EP2133508 A1 EP 2133508A1
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- EP
- European Patent Office
- Prior art keywords
- mast
- drive
- mast element
- drive part
- carriage
- 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.)
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- 238000010276 construction Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 238000005553 drilling Methods 0.000 description 14
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/023—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting the mast being foldable or telescopically retractable
Definitions
- the invention relates to a construction work implement according to the preamble of claim 1.
- a construction work implement is formed with an extendable mast having an upper mast member and a lower mast member, wherein the upper mast member is longitudinally displaceable relative to the lower mast member, a linear drive for displacing the two mast members relative to each other wherein the linear drive has an upper drive part, which is linearly actuated relative to a lower drive part of the linear drive, and a locking device for locking the two mast elements in an extended mast position.
- the invention further relates to a method for operating a construction work implement, in particular a construction work implement according to the invention, according to claim 9.
- a generic construction equipment is from the JP 2002-285775 known.
- This document discloses a construction implement with a two-part extendable mast.
- a mast cylinder is provided to its piston rod with the lower mast element.
- the mast cylinder has a contact surface, which entrains the upper mast element during extension of the mast cylinder.
- a feed cylinder for moving a drilling carriage is present.
- An inventive construction tool is characterized in that the upper drive part of the linear drive is attached to the upper mast element, that the lower drive part of the linear drive along the lower mast element is displaceable, and that on the lower mast element a fixing device is provided with which the lower drive part of the linear drive for Moving the upper mast element releasably secured to the lower mast element.
- an at least two-part mast is provided, the two mast parts extended by means of a linear drive and preferably can also be retracted again.
- the linear drive is mounted on its upper side on the upper mast element.
- a central idea of the invention can be seen in that the linear drive on its opposite lower side, however, is set only temporarily on the lower mast element, namely, when the two mast elements by means of the linear drive relative to each other or to be retracted.
- the temporary attachment of the lower drive part to the lower mast element which is produced by means of the fixing device, makes it possible to transmit the pressure forces, which act upon extension and retraction of the mast elements in the linear drive, to the lower mast element.
- the mast elements can be fixed relative to one another by means of the locking device, that is, the upper mast element is henceforth supported by the locking device.
- the invention has recognized that after the production of the locking of the linear drive is no longer required for supporting the upper mast element, so that it can be used for other drive purposes.
- the lower drive part of the linear drive released after locking the mast elements of the fixing device and thus be released from the lower mast element, so that the lower drive member again along the lower mast element is displaceable.
- the linear drive which was initially used to extend the mast, and is suspended from the upper mast element of the now locked mast can now serve other lifting tasks.
- loads can be raised and lowered along the lower mast element by means of the linear drive.
- the extension of the mast and the displacement of the drilling carriage along the mast can be accomplished with one and the same linear drive, so that no separate drive for the movement of the carriage relative to the mast is required. Consequently, according to the invention, a particularly economical and at the same time versatile construction equipment is obtained.
- the linear drive only temporarily, namely in particular for the extension of the mast, is present at the mast base. If the mast is then extended to the desired height, in particular completely, the mast upper part is locked against the mast lower part.
- the linear drive can henceforth be used for lifting tasks and, for this purpose, for example, be connected to the carriage at its lower drive part.
- the construction work implement expediently has a control which is set up such that, in particular when the mast is extended, a connection between the lower drive part and the lower mast element for transmitting pressure forces from the lower drive part to the lower mast element is released via the fixing device, when the two mast elements are locked by means of the locking device.
- the construction implement according to the invention may preferably be a soil cultivating device, for example a drilling device.
- the linear drive according to the invention is used in particular for extending the upper mast element, ie for increasing the distance. But it can also be used to retract the upper mast element. For retraction can be provided to set the lower drive part first by means of the fixing device again on the lower mast element, then release the locking device and finally retract the linear drive together with the upper mast element. Under the displacement of the mast elements and the linear drive can thus be understood both an extension and a retraction. Under the upper mast element can be understood in particular the erdfernere of the two mast elements.
- the upper drive part can also be hingedly attached to the upper mast element, so be articulated to the upper mast element.
- the upper drive part is suitably attached to the upper mast element, that tensile forces can be transmitted from the linear drive to the upper mast element via the attachment.
- a guide device can be provided on the lower or / and on the upper mast element which guides the lower drive part displaceable relative to the lower mast element. According to the invention, such a guide can still be provided even if the lower drive part is released by the fixing device.
- the locking device is expediently remotely operable, for example, hydraulically remote-controlled, and may in particular be formed positively.
- it may have a bolt, in particular bolts, which is carried out for locking by corresponding recesses in the upper mast element and in the lower mast element.
- the locking device may be provided on the lower mast element.
- a frictional locking device can be provided.
- the fixing device is expediently provided in the region of the mast base, that is in a remote from the upper mast element, the bottom end facing the lower mast element.
- the fixing device defines the lower drive part only in one spatial direction on the lower mast element. Since the displacement of the upper mast element namely usually only compressive forces occur in linear operation, it may be sufficient if the fixing device secures the lower drive part against a directed from the upper mast element away, so a downward displacement.
- the fixing device has a stop which expediently delimits a displacement path of the lower drive part away from the upper mast element, that is to say in particular limits the displacement path downwards.
- the fixing device can be entirely passive without active control elements, so that a structurally particularly simple and reliable construction work equipment is obtained.
- the stop can also be combined with active locking means.
- the stop is designed such that it can absorb at least the forces acting on the linear drive during the extension of the two mast elements and deliver them to the lower mast element.
- the stop can also be adjustable. In particular, it can be moved out of the path of the lower drive part and retractable into the track. Also, the stop can be provided adjustable in height. According to the invention, the stop is arranged on the lower mast element.
- the fixing device can for example also have an adjustable latch or a clamping device, with which the lower drive part for moving the mast elements can be temporarily connected to the lower mast element.
- the lower drive part can be set in several spatial directions on the lower mast element, which can be advantageous, although it must be expected with tensile forces.
- a preferred embodiment of the invention is that the linear drive is a hydraulic cylinder.
- the drive parts of the linear drive can be formed in this case by a piston rod or a cylinder housing of the hydraulic cylinder.
- other linear drives such as a rack drive, conceivable.
- the hydraulic cylinder is double-acting, so that both a controlled extension and a controlled retraction is possible.
- the linear drive is a hydraulic cylinder with two opposite piston rods.
- the upper drive part may be a first piston rod and the lower drive part may be a second Act piston rod, wherein between the two piston rods, a cylinder housing is arranged. Due to the design with two piston rods, a particularly high buckling resistance can be achieved with low weight. If two piston rods are provided, the cylinder housing is expediently longitudinally displaceable both relative to the upper mast element and relative to the lower mast element.
- a further advantageous embodiment of the invention is that on the mast a slidable along the mast sled, in particular with a drill drive, is provided.
- the drill drive can be a rotary drive, a rotationally driven drive and in principle also a pure vibrator. It is particularly advantageous that the drill drive is pivotable on the carriage about a, preferably horizontally extending, axis. This makes it possible to arrange the output shaft of the drill drive for a simple attachment of a drill pipe section approximately horizontally, and then to pivot the output shaft together with the drill pipe attached thereto then for drilling into the vertical. Conveniently, the carriage is displaceable both along the lower mast element and along the upper mast element.
- a connecting part for connecting the lower drive part to the slide is provided on the lower drive part of the linear drive.
- This connecting part makes it possible, after locking the two mast elements to connect the lower drive part of the linear drive with the carriage and the rotary drive, so that the linear drive originally used for extending can now serve for lifting and lowering of the carriage.
- the connecting part is expediently provided at the lower end of the lower drive part.
- the connecting part may be formed, for example, for a bolt connection to the carriage.
- the stop of the fixing device which limits the displacement of the lower drive member, expediently arranged in the path of the connecting part.
- the lower drive part is on the connecting part on the stop and is thus determined via the connecting part temporarily on the lower mast element.
- auxiliary slide is provided on the mast, and that means are provided for connecting the auxiliary slide to the carriage.
- the carriage can be moved along the mast even if the carriage is not connected to the lower drive part of the linear drive.
- an additional force can be exerted on the carriage, which acts in addition to the force of the linear drive. This can be advantageous in particular when pulling a drill string.
- the carriage can be provided to connect the carriage during the displacement, in particular extension of the upper mast element with the auxiliary slide, since in this case the linear drive is required for actuating the upper mast element and is not available for operating the carriage.
- the auxiliary slide can also be connected when pulling a drill string with the carriage.
- the carriage can be simultaneously connected to the lower drive part of the linear drive, so that the auxiliary slide can support the linear drive, or the carriage can be separated from the lower drive part, so that the auxiliary slide applies the tensile forces alone.
- the means for connecting the auxiliary carriage to the carriage are expediently provided for a bolt connection.
- the means for connecting the auxiliary carriage with the carriage for example, hydraulically operated remotely, so that a reliable operation is given even in difficult to reach sled.
- auxiliary slide is arranged above the carriage.
- an arrangement below the slide would be conceivable.
- the auxiliary slide is displaceable both along the upper mast element and along the lower mast element.
- a particularly large stroke of the auxiliary slide, but also the hereby connectable carriage and thus the drill drive is given, so that, for example, a particularly time-saving pulling the drill pipe is made possible.
- a drive in particular a winch drive, is provided for displacing the auxiliary slide.
- the winch drive can be designed for lifting the auxiliary slide, whereas the lowering of the auxiliary slide is done by gravity.
- the winch drive has a winch.
- This winch is preferably arranged on a frame, on which the lower mast element is arranged.
- the frame may be, for example, a vehicle body.
- the lower mast element can be pivoted about a horizontal axis on the frame, so that the mast can be folded down for transport.
- a bottom-side mast extension can be provided, which is located at erect mast below the lower mast element.
- a winch cable of the winch drive is guided around at least one deflection roller arranged on the upper mast element.
- This pulley is suitably provided in the region of the mast head.
- a particularly compact and reliable design can be obtained.
- two pulleys for the winch rope with parallel, spaced axes are provided on the upper mast element in the region of the mast head.
- the winch cable is guided around a deflection roller arranged on the auxiliary slide and / or that the winch cable is guided around a deflection roller provided on the frame.
- a pulley mechanism can be created, which reduces the force to be applied by the winch, which is advantageous, for example, for pulling a heavy drill pipe.
- a further advantageous embodiment of the invention is that the two mast elements are telescopic.
- the retracted mast elements are arranged inside each other, wherein expediently the upper mast element is arranged within the lower mast element.
- the two mast elements can also be provided laterally offset.
- the two mast elements have an aligned guide, for example guide rail, for the carriage and / or the auxiliary carriage, so that the carriage or the auxiliary slide can be moved along both mast elements
- the inventive method is provided for operating a construction work implement with an extendable mast, which has an upper mast element and a lower mast element, wherein the upper mast element is longitudinally displaceable relative to the lower mast element.
- the method for operating a construction work device according to the invention can be provided.
- a linear drive which has an upper drive part and a lower drive part, wherein the upper drive part relative to the lower drive part is linearly actuated, and wherein the upper drive part of the linear drive is attached to the upper mast element, the lower drive part for the transmission of Defined compressive forces from the linear drive in the lower mast element on the lower mast element, and extended the linear drive and thereby extended the upper mast element.
- the two mast elements are locked in an extended mast position according to the inventive method.
- the lower drive part is released from the lower mast element and moved the lower drive member along the lower mast element according to the inventive method, and thereby raising a arranged on the lower drive part payload.
- the lower drive part for transmitting the compressive forces is determined only in one spatial direction on the lower mast element, in particular if the lower drive part is secured against movement downwards. If tensile forces are also to be expected, the lower drive part can also be defined in two opposite spatial directions.
- the fixing of the lower drive part on the lower mast element can in particular be effected by means of a stop which is provided on the lower mast element and on which the lower drive part stands up in the fixed state. Solving the lower one Drive parts can then be done by simply lifting the lower drive part of the stop.
- a particularly preferred development of the method is that the lower drive part is connected after locking the two mast elements with a drill drive, and that the lower drive part is moved together with the drill drive along the lower mast element.
- the payload is at least partially formed by the drill drive.
- FIGS. 1 to 11 An embodiment of a construction apparatus according to the invention is in the FIGS. 1 to 11 shown.
- Fig. 1 shows, the construction equipment on a horizontally extending frame 70, which is pushed onto a trailer, not shown, for transport purposes, and which rises above four hydraulically actuated supports 75 on the ground.
- a mast 1 is hinged to the frame 70.
- the mast 1 is pivotable about the pivoting 77 around between an approximately vertical operating position shown in the figures and a horizontal transport position, not shown, in which the mast 1 extends approximately parallel to the frame 70.
- a hydraulic cylinder assembly 76 is provided, which is hinged on the one hand to the frame 70 and on the other hand to the mast 1.
- the mast 1 has an upper mast element 2 and a lower mast element 3, wherein the upper mast element 2 relative to the lower mast element 3 and the frame 70 along the drilling axis 100 is displaceable.
- the mast 1 can be retracted and extended.
- Fig. 1 shows the mast 1 in a retracted position
- Fig. 4 shows the mast 1 in an extended position.
- the in Fig. 1 shown retracted state is the upper mast element 2 on the lower mast element 3, so that a further method of the upper mast element 2 is inhibited downwards by the lower mast element 3.
- a linear drive 10 For active displacement of the two mast elements 2 and 3 relative to each other, that is, for extension and retraction of the mast 1, a linear drive 10 is provided.
- This linear drive 10 has an upper drive part 12 and a lower drive part 13, wherein the two drive parts 12 and 13 during operation of the linear drive 10 along the drilling axis 100 are actively shifted from each other.
- the linear drive 10 is designed as a hydraulic cylinder with double piston rod.
- the linear drive 10 has a central cylinder housing 11, on the upper side of which an upper piston rod 16 and on the underside of which a lower piston rod 17 can be extended and retracted.
- the upper drive part 12 is formed by the upper piston rod 16 and the lower drive part 13 is formed by the lower piston rod 17.
- the trained as a hydraulic cylinder linear actuator 10 extends inside the mast along the drilling axis 100.
- the upper drive member 12 (the upper piston rod 16) is articulated in the upper region of the upper mast element 2.
- the linear drive 10 is suspended on the upper mast element 2.
- the lower drive part 13, that is, the lower piston rod 17, however, is displaceably mounted parallel to the drilling axis 100 along the lower mast element 3. However, at least temporarily, the displacement is limited by a fixing device 30 described in more detail below.
- the construction implement has a carriage 40 which is provided along the mast 1, in particular along both mast elements 2 and 3, displaceable on the mast 1.
- a drill drive 41 is arranged on the carriage 40. This drill drive 41 can be used to rotate an example in Fig. 9 shown drill string 44 serve around the drilling axis 100.
- the carriage 40 is detachably connected to an auxiliary slide 60, which is also provided along the mast 1, in particular along both mast elements 2 and 3, displaceable on the mast 1.
- the auxiliary carriage 60 is disposed above the carriage 40.
- a connecting device 61 is provided, which is formed in the illustrated embodiment by a bolt on the carriage 40 and a corresponding recess on the auxiliary slide 60.
- a winch drive is provided for active movement of the auxiliary slide 60 and of the slide 40 optionally connected thereto.
- the winch drive has a winch 72, which serves to tumble a winch cable 73.
- the winch cable 73 extends from the winch 72 successively to two deflection rollers 9, 9 ', which are provided axially parallel at the upper end of the upper mast element 2.
- the winch cable 73 extends along the drilling axis 100 down to a further deflection roller 69, which is arranged on the auxiliary slide 60. To this guide roller 69 of the auxiliary slide 60, the winch cable 73 is guided around and runs from there back up to the upper portion of the upper mast element 2 back.
- the winch cable 73 is deflected by a deflection device, not shown in detail, from which it again runs down to a further deflection roller 79, which is provided on the frame 70.
- the winch cable 73 coming from the auxiliary carriage 60 is deflected around this deflection roller 79 of the frame 70 and extends from the deflection roller 79 upwards again to the upper end of the upper mast element 2, where the winch cable 73 is finally attached at the end.
- the linear drive 10 is suspended on the upper mast element 2.
- a block-shaped connecting part 50 is fixed to the lower drive part 13, which is guided longitudinally displaceable on the lower mast element 3.
- This connecting part 50 is, as in Fig. 2 shown provided for making a releasable connection with the carriage 40.
- the connecting part 50 may for example comprise means for producing a bolt connection.
- Fig. 1 Furthermore, shows the construction work device on a fixing device 30.
- This fixing device 30 is designed as a stop 31, which inhibits a movement of the lower drive member 13 relative to the lower mast element 3.
- the stop 31 is disposed in the path of the connecting part 50, so that the movement of the lower drive part 13 is inhibited via the connecting part 50.
- the fixing device 30 makes it possible to temporarily fix the lower drive part 13 to the lower mast element 3, namely at the times at which the lower drive part 13 and / or the connection part 50 rests against the stop 31.
- the linear drive 10 is in operative connection both with the upper mast element 2 and with the lower mast element 3, so that these mast elements 2 and 3 can be extended by actuating the linear drive 10.
- a remotely actuatable locking device 20 is provided in the upper region of the lower mast element 3.
- This locking device 20 has a locking element which can be inserted for locking in a corresponding recess in the upper mast element 2.
- Fig. 1 shows the construction implement in a state immediately after the mast 1 has been brought by means of the hydraulic cylinder assembly 76 in the vertical operating position.
- the auxiliary slide 60 is connected in this state to the carriage 40 and is located together with the carriage 40 in an upper region of the mast 1 on the upper mast element 2.
- the upper mast element 2 is retracted and is at the lower mast element 3.
- the linear drive 10 is almost completely retracted, wherein the lower drive part 13 rests on the connecting part 50 at the stop 31 of the fixing device 30.
- the auxiliary slide 60 is first lowered by the carriage 40 by operating the cable winch 72. Then, the carriage 40 is connected to the connecting part 50 and thus the lower drive part 13, wherein the connecting means 61 releases the carriage 40 from the auxiliary slide 60. This condition is in Fig. 2 shown.
- the auxiliary slide 60 is then raised by operating the winch 72 in an upper portion of the mast 1 and thereby lifted off the carriage 40.
- the carriage 40 remains connected in a lower region of the mast 1 via the connecting part 50 with the lower drive part 13.
- the linear drive 10 is actuated, so that the opposite piston rods 16 and 17, which form the upper drive part 12 and the lower drive part 13, extend out of the cylinder housing 11.
- the lower drive part 13 stands on the connecting part 50 on the stop 31 of the fixing device 30.
- pressure forces from the linear drive 10, and in particular the weight of the upper mast element 2 can be introduced into the lower mast element 3, so that an upward reaction force on the upper mast element. 2 can be exercised to extend the upper mast element 2.
- the linear drive 10 thus presses together with the upper mast element 2 on the stop 31 upwards, so that the upper mast element 2 moves relative to the lower mast element 3 upwards.
- the locking device 20 is actuated, that is, a locking element of the locking device 20 is retracted into a corresponding recess on the upper mast element 2.
- the weight of the upper mast element 2 can henceforth be introduced via the locking device 20 into the lower mast element 3, so that the linear drive 10 is now available for lifting tasks, in particular for lifting the carriage 40 relative to the mast 1.
- Fig. 5 The use of the linear drive for lifting the carriage 40 is in Fig. 5 illustrated. Since the upper mast element 2 is supported by the locking device 20, the linear drive 10 can be retracted without the upper mast element 2 thereby retracting. Since the upper drive part 12 is suspended on the upper mast element 2, the lower drive part 13 is moved relative to the lower mast element 3 when retracting the linear drive 10 upwards. As a result, the connecting part 50 and the carriage 40 attached thereto are also raised and the carriage 40 is thus moved along the lower mast element 3.
- the carriage 40 can be moved together with the drill drive 41 by operating the same linear actuator 10 along the mast 1 up and down, which was initially used to extend the mast 1.
- FIGS. 7 to 9 show the installation of a drill string 44 on the drill drive 41.
- the drill drive 41 is pivotally connected to the carriage 40 about a horizontally extending axis.
- the drill drive can thus in the in Fig. 7 shown horizontal position can be pivoted, in which the drill pipe 44 can be inserted horizontally into the drill drive 41.
- the carriage 40 with the drill drive 41 is thereby displaced by extending the linear drive 10 into a lower region of the mast 1.
- a holding device 80 may be provided, with which the drill pipe 44' can be temporarily held.
- This holding device 80 may, for example, have at least one releasable clamping tongs.
- the auxiliary carriage 60 with the winch 72 can be used to actuate the carriage 40.
- the carriage 40 is connected via the connecting device 61 with the auxiliary slide 60 and the carriage 40 is released from the connecting part 50.
- the carriage 40 can then be moved along the lower mast element 3 as well as along the upper mast element 2 with the mast 1 extended become.
- the connecting part 50 is suitably as in the Figures 10 and 11 shown by extending the linear actuator 10 is disposed in a lower position, so that the carriage stroke is not limited.
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Abstract
Description
Die Erfindung betrifft ein Bauarbeitsgerät gemäß dem Oberbegriff des Anspruchs 1. Ein solches Gerät ist ausgebildet mit einem ausfahrbaren Mast mit einem oberen Mastelement und einem unteren Mastelement, wobei das obere Mastelement relativ zum unteren Mastelement längsverschiebbar ist, einem Linearantrieb zum Verschieben der beiden Mastelemente relativ zueinander, wobei der Linearantrieb ein oberes Antriebsteil aufweist, welches relativ zu einem unteren Antriebsteil des Linearantriebes linear betätigbar ist, und einer Verriegelungseinrichtung zum Verriegeln der beiden Mastelemente in einer ausgefahrenen Mastposition.The invention relates to a construction work implement according to the preamble of claim 1. Such a device is formed with an extendable mast having an upper mast member and a lower mast member, wherein the upper mast member is longitudinally displaceable relative to the lower mast member, a linear drive for displacing the two mast members relative to each other wherein the linear drive has an upper drive part, which is linearly actuated relative to a lower drive part of the linear drive, and a locking device for locking the two mast elements in an extended mast position.
Die Erfindung betrifft ferner ein Verfahren zum Betrieb eines Bauarbeitsgerätes, insbesondere eines erfindungsgemäßen Bauarbeitsgerätes, gemäß Anspruch 9.The invention further relates to a method for operating a construction work implement, in particular a construction work implement according to the invention, according to claim 9.
Ein gattungsgemäßes Bauarbeitsgerät ist aus der
Nach der
A u f g a b e der Erfindung ist es, ein Bauarbeitsgerät und ein Verfahren zum Betrieb eines Bauarbeitsgerätes anzugeben, welche bei hoher Zuverlässigkeit und Einsatzvielfalt eine besonders hohe Wirtschaftlichkeit erlauben.It is an object of the invention to specify a construction work implement and a method for operating a construction work implement, which allow a particularly high degree of economy with high reliability and versatility.
Die Aufgabe wird erfindungsgemäß durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 und ein Verfahren mit den Merkmalen des Anspruchs 9 gelöst. Bevorzugte Ausführungsformen sind in den jeweils abhängigen Ansprüchen angegeben.The object is achieved by a device having the features of claim 1 and a method having the features of claim 9. Preferred embodiments are given in the respective dependent claims.
Ein erfindungsgemäßes Bauarbeitsgerät ist dadurch gekennzeichnet, dass das obere Antriebsteil des Linearantriebes am oberen Mastelement befestigt ist, dass das untere Antriebsteil des Linearantriebes längs des unteren Mastelements verschiebbar ist, und dass am unteren Mastelement eine Festlegeeinrichtung vorgesehen ist, mit welcher das untere Antriebsteil des Linearantriebes zum Verschieben des oberen Mastelements lösbar am unteren Mastelement festlegbar ist.An inventive construction tool is characterized in that the upper drive part of the linear drive is attached to the upper mast element, that the lower drive part of the linear drive along the lower mast element is displaceable, and that on the lower mast element a fixing device is provided with which the lower drive part of the linear drive for Moving the upper mast element releasably secured to the lower mast element.
Nach der Erfindung ist ein zumindest zweiteiliger Mast vorgesehen, dessen beide Mastteile mittels eines Linearantriebes ausgefahren und bevorzugt auch wieder eingefahren werden können. Der Linearantrieb ist dabei auf seiner oberen Seite am oberen Mastelement befestigt. Ein zentraler Gedanke der Erfindung kann darin gesehen werden, dass der Linearantrieb auf seiner gegenüberliegenden unteren Seite hingegen lediglich temporär am unteren Mastelement festgelegt wird, nämlich dann, wenn die beiden Mastelemente mittels des Linearantriebes relativ zueinander aus- oder eingefahren werden sollen. Die temporäre Befestigung des unteren Antriebsteiles am unteren Mastelement, welche mittels der Festelegeeinrichtung hergestellt wird, erlaubt es, die Druckkräfte, welche beim Ein- und Ausfahren der Mastelemente im Linearantrieb wirken, an das untere Mastelement zu übertragen.According to the invention, an at least two-part mast is provided, the two mast parts extended by means of a linear drive and preferably can also be retracted again. The linear drive is mounted on its upper side on the upper mast element. A central idea of the invention can be seen in that the linear drive on its opposite lower side, however, is set only temporarily on the lower mast element, namely, when the two mast elements by means of the linear drive relative to each other or to be retracted. The temporary attachment of the lower drive part to the lower mast element, which is produced by means of the fixing device, makes it possible to transmit the pressure forces, which act upon extension and retraction of the mast elements in the linear drive, to the lower mast element.
Ist der Verschiebevorgang der beiden Mastelemente jedoch beendet, können die Mastelemente mittels der Verriegelungseinrichtung relativ zueinander fixiert werden, das heißt das obere Mastelement wird fortan von der Verriegelungseinrichtung getragen. Die Erfindung hat erkannt, dass nach dem Herstellen der Verriegelung der Linearantrieb nicht mehr zum Stützen des oberen Mastelementes benötigt wird, so dass er für andere Antriebszwecke verwendet werden kann. Demgemäß kann beim erfindungsgemäßen Bauarbeitsgerät das untere Antriebsteil des Linearantriebes nach dem Verriegeln der Mastelemente von der Festlegeeinrichtung freigegeben und somit vom unteren Mastelement gelöst werden, so dass das untere Antriebsteil wieder längs des unteren Mastelements verschiebbar ist. Der Linearantrieb, der zunächst zum Ausfahren des Mastes verwendet wurde, und der am oberen Mastelement des nun verriegelten Mastes aufgehängt ist, kann nun anderen Hubaufgaben dienen. Insbesondere können mittels des Linearantriebes Lasten längs des unteren Mastelementes angehoben und abgesenkt werden. Beispielsweise ist es möglich, mittels des unteren Antriebsteiles des Linearantriebes einen Bohrschlitten mit einem Bohrantrieb längs des Mastes anzuheben und abzusenken.However, if the sliding operation of the two mast elements is completed, the mast elements can be fixed relative to one another by means of the locking device, that is, the upper mast element is henceforth supported by the locking device. The invention has recognized that after the production of the locking of the linear drive is no longer required for supporting the upper mast element, so that it can be used for other drive purposes. Accordingly, in the construction apparatus according to the invention, the lower drive part of the linear drive released after locking the mast elements of the fixing device and thus be released from the lower mast element, so that the lower drive member again along the lower mast element is displaceable. The linear drive, which was initially used to extend the mast, and is suspended from the upper mast element of the now locked mast can now serve other lifting tasks. In particular, loads can be raised and lowered along the lower mast element by means of the linear drive. For example, it is possible by means of the lower drive part of the linear drive to raise and lower a drilling carriage with a drill drive along the mast.
Nach der Erfindung kann somit das Ausfahren des Mastes und das Verschieben des Bohrschlittens längs des Mastes mit ein und demselben Linearantrieb bewerkstelligt werden, so dass kein separater Antrieb für die Bewegung des Schlittens relativ zum Mast erforderlich ist. Folglich wird nach der Erfindung ein besonders wirtschaftliches und zugleich vielseitig einsetzbares Bauarbeitsgerät erhalten.According to the invention, therefore, the extension of the mast and the displacement of the drilling carriage along the mast can be accomplished with one and the same linear drive, so that no separate drive for the movement of the carriage relative to the mast is required. Consequently, according to the invention, a particularly economical and at the same time versatile construction equipment is obtained.
Nach der Erfindung ist vorgesehen, dass der Linearantrieb lediglich vorübergehend, nämlich insbesondere zum Ausfahren des Mastes, am Mastfuß ansteht. Ist der Mast dann bis zur gewünschten Höhe, insbesondere vollständig ausgefahren, wird das Mastoberteil gegen das Mastunterteil verriegelt. Der Linearantrieb kann fortan für Hubaufgaben eingesetzt werden und hierzu beispielsweise an seinem unteren Antriebsteil mit dem Schlitten verbunden werden.According to the invention, it is provided that the linear drive only temporarily, namely in particular for the extension of the mast, is present at the mast base. If the mast is then extended to the desired height, in particular completely, the mast upper part is locked against the mast lower part. The linear drive can henceforth be used for lifting tasks and, for this purpose, for example, be connected to the carriage at its lower drive part.
Das Bauarbeitsgerät weist zweckmäßigerweise eine Steuerung auf, welche so eingerichtet ist, dass, insbesondere bei ausgefahrenem Mast, eine über die Festlegeeinrichtung bestehende Verbindung zwischen dem unterem Antriebsteil und dem unteren Mastelement zur Übertragung von Druckkräften vom unteren Antriebsteil auf das untere Mastelement erst dann freigegeben wird, wenn die beiden Mastelemente mittels der Verriegelungseinrichtung verriegelt sind.The construction work implement expediently has a control which is set up such that, in particular when the mast is extended, a connection between the lower drive part and the lower mast element for transmitting pressure forces from the lower drive part to the lower mast element is released via the fixing device, when the two mast elements are locked by means of the locking device.
Bei dem erfindungsgemäßen Bauarbeitsgerät kann es sich vorzugsweise um ein Bodenbearbeitungsgerät, beispielsweise ein Bohrgerät handeln.The construction implement according to the invention may preferably be a soil cultivating device, for example a drilling device.
Der erfindungsgemäße Linearantrieb wird insbesondere zum Ausfahren des oberen Mastelementes, also zur Distanzvergrößerung eingesetzt. Er kann aber auch zum Einfahren des oberen Mastelementes zum Einsatz kommen. Zum Einfahren kann vorgesehen werden, das untere Antriebsteil zunächst mittels der Festlegeeinrichtung wieder am unteren Mastelement festzulegen, sodann die Verriegelungseinrichtung freizugeben und schließlich den Linearantrieb mitsamt dem oberen Mastelement einzufahren. Unter dem Verschieben der Mastelemente und des Linearantriebes kann somit sowohl ein Ausfahren als auch ein Einfahren verstanden werden. Unter dem oberen Mastelement kann insbesondere das erdfernere der beiden Mastelemente verstanden werden.The linear drive according to the invention is used in particular for extending the upper mast element, ie for increasing the distance. But it can also be used to retract the upper mast element. For retraction can be provided to set the lower drive part first by means of the fixing device again on the lower mast element, then release the locking device and finally retract the linear drive together with the upper mast element. Under the displacement of the mast elements and the linear drive can thus be understood both an extension and a retraction. Under the upper mast element can be understood in particular the erdfernere of the two mast elements.
Das obere Antriebsteil kann auch gelenkig am oberen Mastelement befestigt, also am oberen Mastelement angelenkt sein. Um mittels des Linearantriebes Lasten anheben zu können, ist das obere Antriebsteil zweckmäßigerweise so am oberen Mastelement befestigt, dass über die Befestigung Zugkräfte vom Linearantrieb auf das obere Mastelement übertragbar sind. Für eine besonders hohe Betriebssicherheit kann am unteren oder/und am oberen Mastelement eine Führungseinrichtung vorgesehen sein, welche das relativ zum unteren Mastelement verschiebbare untere Antriebsteil führt. Eine solche Führung kann erfindungsgemäß auch dann noch gegeben sein, wenn das untere Antriebsteil von der Festlegeeinrichtung freigegeben ist.The upper drive part can also be hingedly attached to the upper mast element, so be articulated to the upper mast element. To be able to lift loads by means of the linear drive, the upper drive part is suitably attached to the upper mast element, that tensile forces can be transmitted from the linear drive to the upper mast element via the attachment. For a particularly high level of operational reliability, a guide device can be provided on the lower or / and on the upper mast element which guides the lower drive part displaceable relative to the lower mast element. According to the invention, such a guide can still be provided even if the lower drive part is released by the fixing device.
Die Verriegelungseinrichtung ist zweckmäßigerweise fernbetätigbar, beispielsweise hydraulisch fernbetätigbar, und kann insbesondere formschlüssig ausgebildet sein. Beispielsweise kann sie einen Riegel, insbesondere Bolzen, aufweisen, welcher zum Verriegeln durch korrespondierende Ausnehmungen im oberen Mastelement und im unteren Mastelement durchgeführt wird. Insbesondere kann die Verriegelungseinrichtung am unteren Mastelement vorgesehen sein. Alternativ oder zusätzlich zu der formschlüssigen Verriegelungseinrichtung kann grundsätzlich eine kraftschlüssige Verriegelungseinrichtung vorgesehen sein.The locking device is expediently remotely operable, for example, hydraulically remote-controlled, and may in particular be formed positively. For example, it may have a bolt, in particular bolts, which is carried out for locking by corresponding recesses in the upper mast element and in the lower mast element. In particular, the locking device may be provided on the lower mast element. As an alternative or in addition to the interlocking locking device, in principle a frictional locking device can be provided.
Insbesondere für einen besonders großen Hub des Linearantriebes ist die Festlegeeinrichtung zweckmäßigerweise im Bereich des Mastfußes, also in einem dem oberen Mastelement abgewandten, dem Boden zugewandten Endbereich des unteren Mastelementes vorgesehen.In particular, for a particularly large stroke of the linear drive, the fixing device is expediently provided in the region of the mast base, that is in a remote from the upper mast element, the bottom end facing the lower mast element.
Es kann ausreichend sein, wenn die Festlegeeinrichtung das untere Antriebsteil lediglich in einer Raumrichtung am unteren Mastelement festlegt. Da beim Verschieben des oberen Mastelementes nämlich in der Regel nur Druckkräfte im Linearbetrieb auftreten, kann es ausreichend sein, wenn die Festlegeeinrichtung das untere Antriebsteil gegen eine vom oberen Mastelement hinweg gerichtete, also eine nach unten gerichtete Verschiebung sichert.It may be sufficient if the fixing device defines the lower drive part only in one spatial direction on the lower mast element. Since the displacement of the upper mast element namely usually only compressive forces occur in linear operation, it may be sufficient if the fixing device secures the lower drive part against a directed from the upper mast element away, so a downward displacement.
Besonders bevorzugt ist es, dass die Festlegeeinrichtung einen Anschlag aufweist, welcher zweckmäßigerweise einen Verschiebeweg des unteren Antriebsteils vom oberen Mastelement hinweg begrenzt, das heißt insbesondere den Verschiebeweg nach unten hin begrenzt. In diesem Fall kann die Festlegeeinrichtung gänzlich ohne aktive Stellelemente rein passiv ausgebildet sein, so dass ein konstruktiv besonders einfaches und zuverlässiges Bauarbeitsgerät erhalten wird. Für eine besonders hohe Betriebssicherheit kann der Anschlag aber auch mit aktiven Feststellmitteln kombiniert werden. Erfindungsgemäß ist der Anschlag so ausgebildet, dass er zumindest die beim Ausfahren der beiden Mastelemente im Linearantrieb wirkenden Kräfte aufnehmen und an das untere Mastelement abgeben kann. Der Anschlag kann auch verstellbar sein. Insbesondere kann er aus der Bahn des unteren Antriebsteils herausfahrbar und wieder in die Bahn einfahrbar sein. Auch kann der Anschlag höhenverstellbar vorgesehen sein. Erfindungsgemäß ist der Anschlag am unteren Mastelement angeordnet.It is particularly preferred that the fixing device has a stop which expediently delimits a displacement path of the lower drive part away from the upper mast element, that is to say in particular limits the displacement path downwards. In this case, the fixing device can be entirely passive without active control elements, so that a structurally particularly simple and reliable construction work equipment is obtained. For a particularly high level of operational reliability, the stop can also be combined with active locking means. According to the invention, the stop is designed such that it can absorb at least the forces acting on the linear drive during the extension of the two mast elements and deliver them to the lower mast element. The stop can also be adjustable. In particular, it can be moved out of the path of the lower drive part and retractable into the track. Also, the stop can be provided adjustable in height. According to the invention, the stop is arranged on the lower mast element.
Die Festlegeeinrichtung kann beispielsweise auch einen verstellbaren Riegel oder eine Klemmeinrichtung aufweisen, mit welcher das untere Antriebsteil zum Verschieben der Mastelemente vorübergehend mit dem unteren Mastelement verbunden werden kann. Hierdurch kann das untere Antriebsteil in mehreren Raumrichtungen am unteren Mastelement festgelegt werden, was vorteilhaft sein kann, wenn auch mit Zugkräften gerechnet werden muss.The fixing device can for example also have an adjustable latch or a clamping device, with which the lower drive part for moving the mast elements can be temporarily connected to the lower mast element. As a result, the lower drive part can be set in several spatial directions on the lower mast element, which can be advantageous, although it must be expected with tensile forces.
Eine bevorzugte Ausführungsform der Erfindung besteht darin, dass der Linearantrieb ein Hydraulikzylinder ist. Hierdurch wird bei hoher Wirtschaftlichkeit eine hohe Zuverlässigkeit erhalten. Die Antriebsteile des Linearantriebs können in diesem Fall durch eine Kolbenstange beziehungsweise ein Zylindergehäuse des Hydraulikzylinders gebildet sein. Grundsätzlich sind jedoch auch andere Linearantriebe, wie beispielsweise ein Zahnstangenantrieb, denkbar. Zweckmäßigerweise ist der Hydraulikzylinder doppeltwirkend ausgebildet, so dass sowohl ein kontrolliertes Ausfahren als auch ein kontrolliertes Einfahren möglich ist. Im Hinblick auf Transportabmessungen und Betriebszuverlässigkeit besonders vorteilhaft ist es, dass der Linearantrieb, insbesondere Hydraulikzylinder, im Inneren der beiden Mastelemente verläuft.A preferred embodiment of the invention is that the linear drive is a hydraulic cylinder. As a result, high reliability is obtained with high efficiency. The drive parts of the linear drive can be formed in this case by a piston rod or a cylinder housing of the hydraulic cylinder. In principle, however, other linear drives, such as a rack drive, conceivable. Conveniently, the hydraulic cylinder is double-acting, so that both a controlled extension and a controlled retraction is possible. With regard to transport dimensions and operational reliability, it is particularly advantageous for the linear drive, in particular hydraulic cylinder, to run inside the two mast elements.
Besonders bevorzugt ist es, dass der Linearantrieb ein Hydraulikzylinder mit zwei gegenüberliegenden Kolbenstangen ist. In diesem Fall kann es sich beim oberen Antriebsteil um eine erste Kolbenstange und beim unteren Antriebsteil um eine zweite Kolbenstange handeln, wobei zwischen den beiden Kolbenstangen ein Zylindergehäuse angeordnet ist. Durch die Ausführung mit zwei Kolbenstangen kann bei geringem Gewicht eine besonders hohe Knicksteifigkeit erzielt werden. Sofern zwei Kolbenstangen vorgesehen sind, ist das Zylindergehäuse zweckmäßigerweise sowohl relativ zum oberen Mastelement als auch relativ zum unteren Mastelement längsverschiebbar.It is particularly preferred that the linear drive is a hydraulic cylinder with two opposite piston rods. In this case, the upper drive part may be a first piston rod and the lower drive part may be a second Act piston rod, wherein between the two piston rods, a cylinder housing is arranged. Due to the design with two piston rods, a particularly high buckling resistance can be achieved with low weight. If two piston rods are provided, the cylinder housing is expediently longitudinally displaceable both relative to the upper mast element and relative to the lower mast element.
Eine weitere vorteilhafte Ausführungsform der Erfindung besteht darin, dass am Mast ein längs des Mastes verschiebbarer Schlitten, insbesondere mit einem Bohrantrieb, vorgesehen ist. Bei dem Bohrantrieb kann es sich um einen Drehantrieb, einen drehschlagenden Antrieb und grundsätzlich auch um einen reinen Rüttler handeln. Besonders vorteilhaft ist es, dass der Bohrantrieb am Schlitten um eine, vorzugsweise horizontal verlaufende, Achse schwenkbar ist. Dies ermöglicht es, die Abtriebswelle des Bohrantriebes für eine einfache Befestigung eines Bohrgestängeabschnittes etwa horizontal anzuordnen, und die Abtriebswelle mitsamt dem hieran befestigten Bohrgestänge sodann zum Abbohren in die Vertikale zu verschwenken. Zweckmäßigerweise ist der Schlitten sowohl längs des unteren Mastelementes als auch längs des oberen Mastelementes verschiebbar.A further advantageous embodiment of the invention is that on the mast a slidable along the mast sled, in particular with a drill drive, is provided. The drill drive can be a rotary drive, a rotationally driven drive and in principle also a pure vibrator. It is particularly advantageous that the drill drive is pivotable on the carriage about a, preferably horizontally extending, axis. This makes it possible to arrange the output shaft of the drill drive for a simple attachment of a drill pipe section approximately horizontally, and then to pivot the output shaft together with the drill pipe attached thereto then for drilling into the vertical. Conveniently, the carriage is displaceable both along the lower mast element and along the upper mast element.
Sofern ein Schlitten vorgesehen ist, ist es nach der Erfindung vorteilhaft, dass am unteren Antriebsteil des Linearantriebes ein Verbindungsteil zum Verbinden des unteren Antriebsteils mit dem Schlitten vorgesehen ist. Dieses Verbindungsteil ermöglicht es, nach dem Verriegeln der beiden Mastelemente das untere Antriebsteil des Linear-antriebes mit dem Schlitten und dem Drehantrieb zu verbinden, so dass der ursprünglich zum Ausfahren verwendete Linearantrieb fortan zum Heben und Senken des Schlittens dienen kann. Das Verbindungsteil ist zweckmäßigerweise am unteren Ende des unteren Antriebsteils vorgesehen. Das Verbindungsteil kann beispielsweise für eine Bolzenverbindung mit dem Schlitten ausgebildet sein.If a slide is provided, it is advantageous according to the invention that a connecting part for connecting the lower drive part to the slide is provided on the lower drive part of the linear drive. This connecting part makes it possible, after locking the two mast elements to connect the lower drive part of the linear drive with the carriage and the rotary drive, so that the linear drive originally used for extending can now serve for lifting and lowering of the carriage. The connecting part is expediently provided at the lower end of the lower drive part. The connecting part may be formed, for example, for a bolt connection to the carriage.
Sofern ein Verbindungsteil zum Verbinden des unteren Antriebsteils mit dem Schlitten vorgesehen ist, ist der Anschlag der Festlegeeinrichtung, welcher den Verschiebeweg des unteren Antriebsteiles begrenzt, zweckmäßigerweise in der Bahn des Verbindungsteils angeordnet. Gemäß dieser Ausführungsform steht das untere Antriebsteil über das Verbindungsteil am Anschlag auf und wird somit über das Verbindungsteil temporär am unteren Mastelement festgelegt.If a connecting part for connecting the lower drive part is provided with the carriage, the stop of the fixing device, which limits the displacement of the lower drive member, expediently arranged in the path of the connecting part. According to this embodiment, the lower drive part is on the connecting part on the stop and is thus determined via the connecting part temporarily on the lower mast element.
Weiterhin ist es nach der Erfindung vorteilhaft, dass am Mast ein längs des Mastes verschiebbarer Hilfsschlitten vorgesehen ist, und dass Mittel zum Verbinden des Hilfsschlittens mit dem Schlitten vorgesehen sind. Mittels dieses Hilfsschlittens kann der Schlitten selbst dann längs des Mastes verfahren werden, wenn der Schlitten nicht mit dem unteren Antriebsteil des Linearantriebs verbunden ist. Mittels des Hilfsschlittens kann aber auch eine zusätzliche Kraft auf den Schlitten ausgeübt werden, welche zusätzlich zur Kraft des Linearantriebs wirkt. Dies kann insbesondere beim Ziehen eines Bohrgestänges vorteilhaft sein.Furthermore, it is advantageous according to the invention that on the mast a slidable along the mast auxiliary slide is provided, and that means are provided for connecting the auxiliary slide to the carriage. By means of this auxiliary carriage, the carriage can be moved along the mast even if the carriage is not connected to the lower drive part of the linear drive. By means of the auxiliary slide but also an additional force can be exerted on the carriage, which acts in addition to the force of the linear drive. This can be advantageous in particular when pulling a drill string.
Beispielsweise kann vorgesehen sein, den Schlitten während des Verschiebens, insbesondere Ausfahrens des oberen Mastelementes mit dem Hilfsschlitten zu verbinden, da hierbei der Linearantrieb zum Betätigen des oberen Mastelementes benötigt wird und zum Betätigen des Schlittens nicht zur Verfügung steht. Der Hilfsschlitten kann aber auch beim Ziehen eines Bohrgestänges mit dem Schlitten verbunden werden. Dabei kann der Schlitten gleichzeitig mit dem unteren Antriebsteil des Linearantriebs verbunden sein, so dass der Hilfsschlitten den Linearantrieb unterstützen kann, oder der Schlitten kann vom unteren Antriebsteil getrennt sein, so dass der Hilfsschlitten die Zugkräfte allein aufbringt.For example, it can be provided to connect the carriage during the displacement, in particular extension of the upper mast element with the auxiliary slide, since in this case the linear drive is required for actuating the upper mast element and is not available for operating the carriage. The auxiliary slide can also be connected when pulling a drill string with the carriage. In this case, the carriage can be simultaneously connected to the lower drive part of the linear drive, so that the auxiliary slide can support the linear drive, or the carriage can be separated from the lower drive part, so that the auxiliary slide applies the tensile forces alone.
Die Mittel zum Verbinden des Hilfsschlittens mit dem Schlitten sind zweckmäßigerweise für eine Bolzenverbindung vorgesehen. Geeigneterweise sind die Mittel zum Verbinden des Hilfsschlittens mit dem Schlitten beispielsweise hydraulisch fernbetätigbar, so dass ein zuverlässiger Betrieb auch bei schwer zugänglichem Schlitten gegeben ist.The means for connecting the auxiliary carriage to the carriage are expediently provided for a bolt connection. Suitably, the means for connecting the auxiliary carriage with the carriage, for example, hydraulically operated remotely, so that a reliable operation is given even in difficult to reach sled.
Eine besonders kompakte Bauform kann dadurch erhalten werden, dass der Hilfsschlitten oberhalb des Schlittens angeordnet ist. Grundsätzlich wäre auch eine Anordnung unterhalb des Schlittens denkbar.A particularly compact design can be obtained in that the auxiliary slide is arranged above the carriage. In principle, an arrangement below the slide would be conceivable.
Weiterhin ist es besonders vorteilhaft, dass der Hilfsschlitten sowohl längs des oberen Mastelementes als auch längs des unteren Mastelementes verschiebbar ist. Hierdurch ist ein besonders großer Hub des Hilfsschlittens, aber auch des hiermit verbindbaren Schlittens und somit des Bohrantriebes gegeben, so dass beispielsweise ein besonders Zeit sparendes Ziehen des Bohrgestänges ermöglicht wird.Furthermore, it is particularly advantageous that the auxiliary slide is displaceable both along the upper mast element and along the lower mast element. As a result, a particularly large stroke of the auxiliary slide, but also the hereby connectable carriage and thus the drill drive is given, so that, for example, a particularly time-saving pulling the drill pipe is made possible.
Sofern ein Hilfsschlitten vorhanden ist, ist es besonders bevorzugt, dass ein Antrieb, insbesondere ein Windenantrieb, zum Verschieben des Hilfsschlittens vorgesehen ist.If an auxiliary slide is present, it is particularly preferred that a drive, in particular a winch drive, is provided for displacing the auxiliary slide.
Für eine besonders einfache Konstruktion kann der Windenantrieb zum Anheben des Hilfsschlittens ausgebildet sein, wohingegen das Absenken des Hilfsschlittens durch Schwerkraft erfolgt.For a particularly simple construction of the winch drive can be designed for lifting the auxiliary slide, whereas the lowering of the auxiliary slide is done by gravity.
Weiterhin ist es zweckmäßig, dass der Windenantrieb eine Seilwinde aufweist. Diese Seilwinde ist bevorzugt an einem Rahmen angeordnet ist, an welchem das untere Mastelement angeordnet ist. Bei dem Rahmen kann es sich beispielsweise um einen Fahrzeugaufbau handeln. Insbesondere kann das untere Mastelement um eine horizontale Achse schwenkbar am Rahmen angelenkt sein, so dass der Mast zum Transport umgeklappt werden kann. Am Rahmen kann auch eine bodenseitige Mastverlängerung vorgesehen sein, die bei aufgerichtetem Mast unterhalb des unteren Mastelementes liegt.Furthermore, it is expedient that the winch drive has a winch. This winch is preferably arranged on a frame, on which the lower mast element is arranged. The frame may be, for example, a vehicle body. In particular, the lower mast element can be pivoted about a horizontal axis on the frame, so that the mast can be folded down for transport. On the frame, a bottom-side mast extension can be provided, which is located at erect mast below the lower mast element.
Besonders bevorzugt ist es, dass ein Windenseil des Windenantriebes um zumindest eine am oberen Mastelement angeordnete Umlenkrolle herumgeführt ist. Diese Umlenkrolle ist geeigneterweise im Bereich des Mastkopfes vorgesehen. Durch eine solche Umlenkrolle kann eine besonders kompakte und zuverlässige Bauform erhalten werden. Vorzugsweise sind am oberen Mastelement im Bereich des Mastkopfes zwei Umlenkrollen für das Windenseil mit parallelen, beabstandeten Achsen vorgesehen.It is particularly preferred that a winch cable of the winch drive is guided around at least one deflection roller arranged on the upper mast element. This pulley is suitably provided in the region of the mast head. By such a deflection roller, a particularly compact and reliable design can be obtained. Preferably, two pulleys for the winch rope with parallel, spaced axes are provided on the upper mast element in the region of the mast head.
Weiterhin kann vorgesehen sein, dass das Windenseil um eine am Hilfsschlitten angeordnete Umlenkrolle herumgeführt ist und/oder dass das Windenseil um eine am Rahmen vorgesehene Umlenkrolle herumgeführt ist. Durch diese gegebenenfalls mehrfache Umlenkung kann ein Flaschenzugmechanismus geschaffen werden, welcher die von der Seilwinde aufzubringende Kraft verringert, was beispielsweise zum Ziehen eines schweren Bohrgestänges vorteilhaft ist.Furthermore, it can be provided that the winch cable is guided around a deflection roller arranged on the auxiliary slide and / or that the winch cable is guided around a deflection roller provided on the frame. By this possibly multiple deflection, a pulley mechanism can be created, which reduces the force to be applied by the winch, which is advantageous, for example, for pulling a heavy drill pipe.
Eine weitere vorteilhafte Ausgestaltung der Erfindung liegt darin, dass die beiden Mastelemente teleskopierbar sind. Gemäß dieser Ausführungsform sind die eingefahrenen Mastelemente ineinander angeordnet, wobei zweckmäßigerweise das obere Mastelement innerhalb des unteren Mastelementes angeordnet ist. Durch eine teleskopierbare Ausgestaltung können besonders kompakte Transportabmessungen erhalten werden. Grundsätzlich können die beiden Mastelemente jedoch auch seitlich versetzt vorgesehen sein. Zweckmäßigerweise weisen die beiden Mastelemente eine fluchtende Führung, beispielsweise Führungsschiene, für den Schlitten und/oder den Hilfsschlitten auf, so dass der Schlitten beziehungsweise der Hilfsschlitten längs beider Mastelemente verfahrbar istA further advantageous embodiment of the invention is that the two mast elements are telescopic. According to this embodiment, the retracted mast elements are arranged inside each other, wherein expediently the upper mast element is arranged within the lower mast element. By a telescopic design particularly compact transport dimensions can be obtained. In principle, however, the two mast elements can also be provided laterally offset. Conveniently, the two mast elements have an aligned guide, for example guide rail, for the carriage and / or the auxiliary carriage, so that the carriage or the auxiliary slide can be moved along both mast elements
Das erfindungsgemäße Verfahren ist vorgesehen zum Betrieb eines Bauarbeitsgerätes mit einem ausfahrbaren Mast, welcher ein oberes Mastelement und ein unteres Mastelement aufweist, wobei das obere Mastelement relativ zum unteren Mastelement längsverschiebbar ist. Insbesondere kann das Verfahren zum Betrieb eines erfindungsgemäßen Bauarbeitsgerätes vorgesehen sein.The inventive method is provided for operating a construction work implement with an extendable mast, which has an upper mast element and a lower mast element, wherein the upper mast element is longitudinally displaceable relative to the lower mast element. In particular, the method for operating a construction work device according to the invention can be provided.
Entsprechend dem erfindungsgemäßen Verfahren wird ein Linearantrieb vorgesehen, welcher ein oberes Antriebsteil und ein unteres Antriebsteil aufweist, wobei das obere Antriebsteil relativ zum unteren Antriebsteil linear betätigbar ist, und wobei das obere Antriebsteil des Linearantriebes am oberen Mastelement befestigt ist, das untere Antriebsteil zur Übertragung von Druckkräften aus dem Linearantrieb in das untere Mastelement am unteren Mastelement festgelegt, und der Linearantrieb ausgefahren und dabei das obere Mastelement ausgefahren. Anschließend werden nach dem erfindungsgemäßen Verfahren die beiden Mastelemente in einer ausgefahrenen Mastposition verriegelt. Anschließend wird nach dem erfindungsgemäßen Verfahren das untere Antriebsteil vom unteren Mastelement gelöst und das untere Antriebsteil längs des unteren Mastelementes verfahren, und dabei eine am unteren Antriebsteil angeordnete Nutzlast angehoben.According to the inventive method, a linear drive is provided, which has an upper drive part and a lower drive part, wherein the upper drive part relative to the lower drive part is linearly actuated, and wherein the upper drive part of the linear drive is attached to the upper mast element, the lower drive part for the transmission of Defined compressive forces from the linear drive in the lower mast element on the lower mast element, and extended the linear drive and thereby extended the upper mast element. Subsequently, the two mast elements are locked in an extended mast position according to the inventive method. Subsequently, the lower drive part is released from the lower mast element and moved the lower drive member along the lower mast element according to the inventive method, and thereby raising a arranged on the lower drive part payload.
Die im Zusammenhang mit dem Verfahren erläuterten Erfindungsaspekte können auch bei der erfindungsgemäßen Vorrichtung zum Einsatz kommen, ebenso wie die im Zusammenhang mit der Vorrichtung genannten Erfindungsaspekte beim Verfahren zum Einsatz kommen können.The aspects of the invention explained in connection with the method can also be used in the device according to the invention, just as the aspects of the invention mentioned in connection with the device can be used in the method.
Es kann ausreichend sein, wenn das untere Antriebsteil zur Übertragung der Druckkräfte lediglich in einer Raumrichtung am unteren Mastelement festlegt wird, insbesondere wenn das untere Antriebsteil gegen eine Bewegung nach unten gesichert wird. Sind auch Zugkräfte zu erwarten, kann das untere Antriebsteil aber auch in zwei gegenüberliegende Raumrichtungen festgelegt werden.It may be sufficient if the lower drive part for transmitting the compressive forces is determined only in one spatial direction on the lower mast element, in particular if the lower drive part is secured against movement downwards. If tensile forces are also to be expected, the lower drive part can also be defined in two opposite spatial directions.
Das Festlegen des unteren Antriebsteils am unteren Mastelement kann insbesondere mittels eines Anschlags erfolgen, der am unteren Mastelement vorgesehen ist, und auf dem das untere Antriebsteil im festgelegten Zustand aufsteht. Das Lösen des unteren Antriebsteiles kann dann durch einfaches Abheben des unteren Antriebsteiles vom Anschlag erfolgen.The fixing of the lower drive part on the lower mast element can in particular be effected by means of a stop which is provided on the lower mast element and on which the lower drive part stands up in the fixed state. Solving the lower one Drive parts can then be done by simply lifting the lower drive part of the stop.
Eine besonders bevorzugte Weiterbildung des Verfahrens liegt darin, dass das untere Antriebsteil nach dem Verriegeln der beiden Mastelemente mit einem Bohrantrieb verbunden wird, und dass das untere Antriebsteil mitsamt dem Bohrantrieb längs des unteren Mastelementes verfahren wird. In diesem Fall wird die Nutzlast zumindest teilweise durch den Bohrantrieb gebildet.A particularly preferred development of the method is that the lower drive part is connected after locking the two mast elements with a drill drive, and that the lower drive part is moved together with the drill drive along the lower mast element. In this case, the payload is at least partially formed by the drill drive.
Die Erfindung wird nachfolgend anhand bevorzugter Ausführungsbeispiele näher erläutert, die schematisch in den beigefügten Figuren dargestellt sind. In den Figuren zeigen:
- Fig. 1 bis Fig. 11
- ein Ausführungsbeispiel eines erfindungsgemäßen Bauarbeitsgerätes in verschiedenen Betriebsstadien.
- Fig. 1 to Fig. 11
- An embodiment of a construction apparatus according to the invention in different stages of operation.
Ein Ausführungsbeispiel eines erfindungsgemäßen Bauarbeitsgerätes ist in den
Über ein Schwenkgelenk 77 ist am Rahmen 70 ein Mast 1 angelenkt. Der Mast 1 ist um das Schwenkgelenkt 77 herum zwischen einer in den Figuren dargestellten etwa vertikalen Betriebsposition und einer nicht dargestellten horizontalen Transportposition, in welcher der Mast 1 etwa parallel zum Rahmen 70 verläuft, schwenkbar. Zum aktiven Verschwenken des Mastes 1 um das Schwenkgelenk 77 ist eine Hydraulikzylinderanordnung 76 vorgesehen, die einerseits am Rahmen 70 und andererseits am Mast 1 angelenkt ist.About a pivot joint 77, a mast 1 is hinged to the
Der Mast 1 weist ein oberes Mastelement 2 sowie ein unteres Mastelement 3 auf, wobei das obere Mastelement 2 relativ zum unteren Mastelement 3 und dem Rahmen 70 längs der Bohrachse 100 verschiebbar ist. Durch Verschieben der beiden Mastelemente 2 und 3 relativ zueinander kann der Mast 1 ein- und ausgefahren werden. Beispielsweise
Zum aktiven Verschieben der beiden Mastelemente 2 und 3 relativ zueinander, das heißt zum Aus- und Einfahren des Mastes 1, ist ein Linearantrieb 10 vorgesehen. Dieser Linearantrieb 10 weist ein oberes Antriebsteil 12 sowie ein unteres Antriebsteil 13 auf, wobei die beiden Antriebsteile 12 und 13 beim Betrieb des Linearantriebes 10 längs der Bohrachse 100 aktiv zueinander verschoben werden.For active displacement of the two
Der Linearantrieb 10 ist als Hydraulikzylinder mit Doppelkolbenstange ausgebildet. Als solcher weist der Linearantrieb 10 ein zentrales Zylindergehäuse 11 auf, an dessen Oberseite eine obere Kolbenstange 16 und an dessen Unterseite eine untere Kolbenstange 17 aus- und einfahrbar ist. Das obere Antriebsteil 12 wird dabei durch die obere Kolbenstange 16 gebildet und das untere Antriebsteil 13 wird durch die untere Kolbenstange 17 gebildet.The
Der als Hydraulikzylinder ausgebildete Linearantrieb 10 verläuft im Inneren des Mastes längs der Bohrachse 100. An seinem oberen, das heißt an seinem dem Zylindergehäuse 11 abgewandten Ende ist das obere Antriebsteil 12 (die obere Kolbenstange 16) im oberen Bereich des oberen Mastelementes 2 angelenkt. Hierdurch ist der Linearantrieb 10 am oberen Mastelement 2 aufgehängt.The trained as a hydraulic cylinder
Das untere Antriebsteil 13, also die untere Kolbenstange 17, ist hingegen längs des unteren Mastelementes 3 parallel zur Bohrachse 100 verschiebbar gelagert. Zumindest zeitweise ist der Verschiebeweg jedoch durch eine weiter unten näher beschriebene Festlegeeinrichtung 30 begrenzt.The
Das Bauarbeitsgerät weist einen Schlitten 40 auf, der längs des Mastes 1, insbesondere längs beider Mastelemente 2 und 3, verschiebbar am Mast 1 vorgesehen ist. Am Schlitten 40 ist ein Bohrantrieb 41 angeordnet. Dieser Bohrantrieb 41 kann zum drehenden Betätigen eines beispielsweise in
Der Schlitten 40 ist lösbar mit einem Hilfsschlitten 60 verbunden, welcher ebenfalls längs des Mastes 1, insbesondere längs beider Mastelemente 2 und 3, verschiebbar am Mast 1 vorgesehen ist. Der Hilfsschlitten 60 ist oberhalb des Schlittens 40 angeordnet. Zum lösbaren Verbinden des Schlittens 40 mit dem Hilfsschlitten 60 ist eine Verbindungseinrichtung 61 vorgesehen, die im dargestellten Ausführungsbeispiel durch einen Bolzen am Schlitten 40 und eine korrespondierende Ausnehmung am Hilfsschlitten 60 gebildet wird.The
Zum aktiven Verfahren des Hilfsschlittens 60 und des gegebenenfalls hiermit verbundenen Schlittens 40 ist ein Windenantrieb vorgesehen. Der Windenantrieb weist eine Seilwinde 72 auf, die zum Auftrommeln eines Windenseils 73 dient. Das Windenseil 73 verläuft von der Seilwinde 72 nacheinander zu zwei Umlenkrollen 9, 9', die am oberen Ende des oberen Mastelementes 2 achsparallel vorgesehen sind. Von den Umlenkrollen 9, 9' verläuft das Windenseil 73 längs der Bohrachse 100 nach unten zu einer weiteren Umlenkrolle 69, die am Hilfsschlitten 60 angeordnet ist. Um diese Umlenkrolle 69 des Hilfsschlittens 60 ist das Windenseil 73 herumgeführt und verläuft von dort wieder nach oben zum oberen Bereich des oberen Mastelementes 2 zurück. Dort wird das Windenseil 73 von einer nicht im Detail dargestellten Umlenkeinrichtung umgelenkt, von der es wieder nach unten zu einer weiteren Umlenkrolle 79 verläuft, welche am Rahmen 70 vorgesehen ist. Das vom Hilfsschlitten 60 kommende Windenseil 73 ist um diese Umlenkrolle 79 des Rahmens 70 herumgelenkt und verläuft von der Umlenkrolle 79 wieder nach oben zum oberen Ende des oberen Mastelementes 2, wo das Windenseil 73 schließlich endseitig befestigt ist. Durch die beschriebene mehrfache Umlenkung des Windenseils 73, in welches der Hilfsschlitten 60 über seine Umlenkrolle 69 eingehängt ist, wird ein Flaschenzugmechanismus geschaffen, der es erlaubt, mittels der Seilwinde 72 besonders hohe Zugkräfte auf den Hilfsschlitten 60 und somit den Schlitten 40 mit dem Bohrantrieb 41 auszuüben, und der zugleich ein einfaches Umlegen des Mastes 1 zum Transport erlaubt.A winch drive is provided for active movement of the
An seinem oberen Antriebsteil 12 ist der Linearantrieb 10 am oberen Mastelement 2 aufgehängt. Am unteren Ende des unteren Antriebsteiles 13 ist am unteren Antriebsteil 13 ein blockartig ausgebildetes Verbindungsteil 50 befestigt, welches längsverschiebbar am unteren Mastelement 3 geführt ist. Dieses Verbindungsteil 50 ist, wie beispielsweise in
Wie
Die Festlegeeinrichtung 30 ermöglicht es, das untere Antriebsteil 13 zeitweise am unteren Mastelement 3 festzulegen, nämlich zu den Zeitpunkten, an welchen das untere Antriebsteil 13 und/oder das Verbindungsteil 50 am Anschlag 31 aufliegt. In diesem zeitweise festgelegten Zustand steht der Linearantrieb 10 sowohl mit dem oberen Mastelement 2 als auch mit dem unteren Mastelement 3 in Wirkverbindung, so dass diese Mastelemente 2 und 3 durch Betätigen des Linearantriebs 10 ausgefahren werden können.The fixing device 30 makes it possible to temporarily fix the
Um die Mastelemente 2 und 3 in einer ausgefahrenen Position zu verriegeln, ist im oberen Bereich des unteren Mastelementes 3 eine fernbetätigbare Verriegelungseinrichtung 20 vorgesehen. Diese Verriegelungseinrichtung 20 weist ein Riegelelement auf, das zum Verriegeln in eine korrespondierende Ausnehmung im oberen Mastelement 2 einschiebbar ist.In order to lock the
Zum Ausfahren des Mastes 1 wird der Hilfsschlitten 60 mit dem Schlitten 40 zunächst durch Betätigen der Seilwinde 72 abgesenkt. Sodann wird der Schlitten 40 mit dem Verbindungsteil 50 und somit dem unteren Antriebsteil 13 verbunden, wobei die Verbindungseinrichtung 61 den Schlitten 40 vom Hilfsschlitten 60 freigibt. Dieser Zustand ist in
Wie in
Sodann wird, wie in
Ist das obere Mastelement 2 wie in
Die Verwendung des Linearantriebes zum Anheben des Schlittens 40 ist in
Beim Anheben des Verbindungsteils 50 wird dieses vom Anschlag 31 abgehoben und somit die über die Festlegeeinrichtung 30 vermittelte zeitweise Festlegung des unteren Antriebsteiles 13 am unteren Mastelement 3 gelöst.When lifting the connecting
Wie die
Die
Sodann wird, wie in
Wie in
Sofern ein besonders großer Schlittenhub erforderlich ist, kann zum Betätigen des Schlittens 40 auch der Hilfsschlitten 60 mit der Seilwinde 72 zum Einsatz kommen. Hierzu wird der Schlitten 40 über die Verbindungseinrichtung 61 mit dem Hilfsschlitten 60 verbunden und der Schlitten 40 vom Verbindungsteil 50 gelöst. Wie die
Sofern besonders große Zugkräfte benötigt werden, ist es auch denkbar, den Schlitten 40 gleichzeitig über die Verbindungseinrichtung 61 mit dem Hilfsschlitten 60 und über das Verbindungsteil 50 mit dem unteren Antriebsteil 13 des Linearantriebes 10 zu verbinden, so dass dann sowohl mittels der Seilwinde 72 als auch mittels des Linearantriebes 10 eine nach oben gerichtete Zugkraft auf den Schlitten 40 ausgeübt werden kann.If particularly large tensile forces are required, it is also conceivable to connect the
Claims (10)
dadurch gekennzeichnet,
dass die Festlegeeinrichtung (30) einen Anschlag (31) aufweist, welcher einen Verschiebeweg des unteren Antriebsteils (13) vom oberen Mastelement (2) hinweg begrenzt.Construction work tool according to claim 1,
characterized,
in that the fixing device (30) has a stop (31) which limits a displacement path of the lower drive part (13) away from the upper mast element (2).
dadurch gekennzeichnet,
dass der Linearantrieb (10) ein Hydraulikzylinder mit zwei gegenüberliegenden Kolbenstangen (16, 17) ist.Construction work tool according to one of the preceding claims,
characterized,
in that the linear drive (10) is a hydraulic cylinder with two opposite piston rods (16, 17).
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
dass die beiden Mastelemente (2, 3) teleskopierbar sind.Construction work tool according to one of the preceding claims,
characterized,
that the two mast elements (2, 3) are telescopic.
dadurch gekennzeichnet,
dass das untere Antriebsteil (13) nach dem Verriegeln der beiden Mastelemente (2, 3) mit einem Bohrantrieb (41) verbunden wird, und dass das untere Antriebsteil (13) mitsamt dem Bohrantrieb (41) längs des unteren Mastelementes (3) verfahren wird.Method according to claim 9,
characterized,
that the lower drive part (13) after locking the two mast elements (2, 3) with a drill drive (41) is connected, and that the lower drive part (13) along with the drill drive (41) along the lower mast element (3) is moved ,
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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EP08010845.9A EP2133508B2 (en) | 2008-06-13 | 2008-06-13 | Construction device with extendable mast and method for operation of same |
AT08010845T ATE503074T1 (en) | 2008-06-13 | 2008-06-13 | CONSTRUCTION EQUIPMENT WITH EXTENDABLE MAST AND METHOD FOR OPERATING SUCH CONSTRUCTION EQUIPMENT |
DE502008002947T DE502008002947D1 (en) | 2008-06-13 | 2008-06-13 | Construction work implement with extendable mast and method for operating such a construction work implement |
MX2009004994A MX2009004994A (en) | 2008-06-13 | 2009-05-11 | Construction device with extendable mast and method for operation of same. |
CA2666890A CA2666890C (en) | 2008-06-13 | 2009-05-26 | Construction apparatus with extendable mast and method for operating such a construction apparatus |
EA200900649A EA014597B1 (en) | 2008-06-13 | 2009-06-03 | Construction apparatus with extendable mast and method for operation of same |
US12/457,342 US8397833B2 (en) | 2008-06-13 | 2009-06-08 | Construction apparatus with extendable mast and method for operating such a construction apparatus |
BRPI0902015-2A BRPI0902015A2 (en) | 2008-06-13 | 2009-06-09 | Removable mast building implement and process for operating that building implement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08010845.9A EP2133508B2 (en) | 2008-06-13 | 2008-06-13 | Construction device with extendable mast and method for operation of same |
Publications (3)
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EP2133508A1 true EP2133508A1 (en) | 2009-12-16 |
EP2133508B1 EP2133508B1 (en) | 2011-03-23 |
EP2133508B2 EP2133508B2 (en) | 2015-03-18 |
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EP08010845.9A Active EP2133508B2 (en) | 2008-06-13 | 2008-06-13 | Construction device with extendable mast and method for operation of same |
Country Status (8)
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---|---|
US (1) | US8397833B2 (en) |
EP (1) | EP2133508B2 (en) |
AT (1) | ATE503074T1 (en) |
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CA (1) | CA2666890C (en) |
DE (1) | DE502008002947D1 (en) |
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2009
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- 2009-05-26 CA CA2666890A patent/CA2666890C/en not_active Expired - Fee Related
- 2009-06-03 EA EA200900649A patent/EA014597B1/en not_active IP Right Cessation
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2345764A1 (en) * | 2010-01-14 | 2011-07-20 | ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH | Telescopic leader mast |
US8887830B2 (en) | 2010-01-14 | 2014-11-18 | Abi Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik Und Vertriebsgesellschaft Mbh | Telescoping leader |
EP2532826A1 (en) * | 2011-06-09 | 2012-12-12 | BAUER Maschinen GmbH | Construction device and method for aligning a mast |
US9140066B2 (en) | 2011-06-09 | 2015-09-22 | Bauer Maschinen Gmbh | Construction work unit and method for erecting a mast |
EP3214258A1 (en) * | 2011-06-09 | 2017-09-06 | BAUER Maschinen GmbH | Construction device and method for erecting a mast |
CN102518399A (en) * | 2011-11-25 | 2012-06-27 | 河南省三力机械制造有限公司 | Mast and long spiral drilling machine using same |
Also Published As
Publication number | Publication date |
---|---|
EA200900649A1 (en) | 2009-12-30 |
EP2133508B1 (en) | 2011-03-23 |
US20090314547A1 (en) | 2009-12-24 |
BRPI0902015A2 (en) | 2010-04-13 |
EA014597B1 (en) | 2010-12-30 |
EP2133508B2 (en) | 2015-03-18 |
CA2666890A1 (en) | 2009-12-13 |
DE502008002947D1 (en) | 2011-05-05 |
US8397833B2 (en) | 2013-03-19 |
MX2009004994A (en) | 2010-01-15 |
ATE503074T1 (en) | 2011-04-15 |
CA2666890C (en) | 2011-08-23 |
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