EP4001509B1 - Method and construction machine for soil compaction - Google Patents
Method and construction machine for soil compaction Download PDFInfo
- Publication number
- EP4001509B1 EP4001509B1 EP20206938.1A EP20206938A EP4001509B1 EP 4001509 B1 EP4001509 B1 EP 4001509B1 EP 20206938 A EP20206938 A EP 20206938A EP 4001509 B1 EP4001509 B1 EP 4001509B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- winch
- cable
- support cable
- winch drum
- compacting element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims description 30
- 238000005056 compaction Methods 0.000 title claims description 24
- 239000002689 soil Substances 0.000 title claims description 24
- 238000010276 construction Methods 0.000 title claims description 19
- 238000004804 winding Methods 0.000 claims description 36
- 230000008878 coupling Effects 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims 1
- 238000007906 compression Methods 0.000 description 22
- 230000006835 compression Effects 0.000 description 21
- 239000000725 suspension Substances 0.000 description 19
- 238000011161 development Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/46—Position indicators for suspended loads or for crane elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/485—Control devices automatic electrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
- B66D1/505—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control electrical
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
Definitions
- the invention relates to a method for soil compaction with a construction machine, in which a carrying cable is guided along a mast, the carrying cable is wound up and unwound by means of a rotatably mounted winch drum of a cable winch, the winch drum is driven in rotation by means of a winch drive and a compacting element is arranged on the carrying cable which is moved vertically by the suspension cable, the suspension cable being unwound from the winch drum of the cable winch and the compaction element being lowered from a position above a floor surface on the suspension cable down to the floor surface, the compaction element striking the floor surface and thereby hitting the floor compressed, according to the preamble of claim 1.
- the invention also relates to a construction machine for soil compaction with a mast, a carrying cable which is guided along the mast, a cable winch with a rotatably mounted winch drum on which the carrying cable is attached for winding and unwinding, a winch drive for driving the winch drum in rotation, a A compacting element attached to the suspension cable for vertical movement, and a control unit by which the cable winch is operable to unwind the suspension cable from the winch drum, the compaction element on the suspension cable being lowered to a ground surface and the compacting element being raised to compact the ground hitting the ground surface, according to the preamble of claim 11.
- a generic construction machine is, for example, from the EP 3 708 528 A1 out.
- the rope pressing device means an additional design effort and is associated with a corresponding space requirement on the construction machine.
- the rope pressing device also requires maintenance at certain time intervals.
- the invention is based on the task of specifying a method and a construction machine for soil compaction, with which the negative effects of cable vibration of the supporting cable on the cable winding on the winch drum are counteracted in a particularly efficient manner.
- a method for soil compaction according to the invention is characterized in that the winch drum is decoupled from the winch drive via a coupling device when the support cable is being unwound, that before the compaction element strikes the ground surface the winch drive is driven in a direction of rotation for winding up the support cable and that after the When the compacting element hits the ground surface, the coupling device couples the winch drum to the winch drive, which is already rotating.
- the invention is based on the knowledge that insufficient tension of the suspension cable in the area of the winch caused by cable vibration can result in cable windings on the winch drum jumping out of their intended position.
- the winch drive is decoupled from the winch drum via a coupling device when the support cable is unwound in a period of time before the compression element hits the ground surface.
- the movement of the winch drum is therefore independent of the movement of the winch drive. This independence can be used to operate the winch drive early in a direction of rotation, which is required to wind up the suspension cable.
- the coupling device allows the winch drum to be reconnected or coupled to the winch drive, particularly immediately after the compaction element has struck the ground surface, whereby the torque of the winch drive applied to the drive shaft can have a direct effect on the winch drum and a resulting abrupt starting rotary movement of the winch drum Direction of winding up the support rope leads to very rapid rope tension in the area of the winch.
- the carrying cable can be connected directly to the compression element.
- a chain and/or a steel cable hanger is preferably arranged as a buffer between the support cable and the compression element.
- compression of the carrying cable by standing on the compression element can be avoided when braking.
- at least one additional weight for example in the form of a steel traverse, can optionally be arranged between the support cable and the steel cable hanger.
- the soil compaction process can be carried out manually by a machine operator.
- the method is carried out automatically by means of a control unit.
- the control unit can in particular be connected to the winch drive and the clutch device and actuate them accordingly.
- the control unit can also be connected to one or more sensors, by means of which a position of the compression element and/or the cable tension is detected.
- the clutch device can be designed as a lockable overrunning clutch, with locking or unlocking being able to be effected by the control unit.
- the coupling device can be designed in any suitable manner.
- the coupling device it is particularly expedient for the coupling device to comprise a free-fall brake, with the carrying cable being unwound when the compression element is in free fall.
- a free-fall brake allows the winch drum to be driven with low friction solely by the weight of the compression element attached to the supporting cable, with the compression element being able to hit the ground surface in free fall, so to speak. In this free fall, there is a certain minimum tensile stress on the suspension cable.
- the free-fall brake can be used electronically or by appropriate mechanical components to prevent a free-fall when it hits the ground and there is a reduction in cable tension.
- the free-fall brake which can be part of the clutch device or form it as a whole, can be connected to the control unit, which can basically include an electronic computer unit.
- the clutch device can be actuated at any point in time.
- a preferred method variant of the invention consists in the coupling device carrying out a coupling when the compacting element reaches the ground surface. This ensures that, on the one hand, the compression element falls as freely as possible and, on the other hand, torque is transmitted from the winch drive to the winch drum immediately after it hits the ground in order to generate the desired cable tension of the carrying cable in the area of the winch.
- any torque can be set on the winch drive for any period of time.
- a tightening torque is generated by the winch drive when coupling, by means of which the carrying cable is tensioned in the area of the winch.
- the tightening torque can preferably be designed in such a way that this leads to a desired cable tension, but the compression element is not lifted from the ground. A second, higher torque can then be set for lifting.
- the carrying cable in the area of the winch is first briefly stretched and then, before the compacting element is lifted from the ground again, the carrying cable is automatically unwound from the winch drum by a certain amount by the control unit becomes.
- the carrying cable is wound up again immediately afterwards.
- this method it is provided to counteract an incorrect winding of the carrying cable on the winch drum by first briefly tensioning the carrying cable in the region of the winch without lifting the compression element from the ground. Subsequently, before the compression element is lifted from the ground, the carrying cable tensioned in this way is automatically unwound and relaxed by the control unit by a certain amount, any misalignment of the winding on the winch drum that may have occurred being removed again by unwinding.
- the carrying cable can then be automatically wound up again by the control unit and the compaction element can be lifted off the ground until the compaction element again reaches the desired starting position above the ground for a renewed compaction process.
- the amount or degree of unwinding of the suspension cable before lifting the compression element again by winding up the suspension cable can be adjusted in any suitable manner. According to a further development of the invention, it is particularly advantageous that the carrying cable is unwound until the carrying cable is wound correctly on the winch drum. This ensures clean winding over the long term and therefore less wear and tear on the suspension cable.
- the winding can be observed directly by a machine operator from a control cabin. Clean cable winding can also be ensured with any arrangement of the winch drum according to a further development of the invention by using a sensor unit, in particular a camera unit or a radar unit or another suitable sensor, to detect a winding of the suspension cable on the winch drum.
- the image of the camera unit for example, it can be displayed to a machine operator in the machine cabin. Detection can take place optically, without contact using energy waves, tactilely, electronically, magnetically, by reed contact or in any other suitable manner.
- the sensor unit can be connected to the control unit, which uses signals or data recorded by the sensor unit to determine whether the winding on the winch drum is correct.
- the signal or the data can in particular be an image.
- the sensor signal recorded for the rope winding is evaluated electronically, for example with image processing software.
- the machine operator or the control unit can set an amount or a measure of the unwinding of the support cable individually until the cable winding on the winch drum is correct.
- the amount of unwinding can be specified as an angle of rotation for the winch drum or a length for the carrying cable or a period of time for the control of the winch drive (at a defined speed).
- the amount of unwinding of the support cable is set automatically by the control unit or by a machine operator before a renewed lifting process of the compression element.
- the amount can be constant or variable.
- control unit is provided, which is designed to carry out one of the methods for soil compaction described above.
- the control unit can in particular be an electronic control unit and in particular can be integrated into an existing control unit of a construction machine.
- the winch drum can also be arranged directly on the mast and in particular in an upper region of the mast. According to a further development of the invention, it is particularly expedient for the carrying cable to be guided over a mast head at the upper end of the mast.
- the winch drum and the winch drive can thus be provided directly or close to a carrier device be so that the construction machine as a whole has as low an overall center of gravity as possible.
- the carrier device can in particular have an undercarriage with an uppercarriage rotatably mounted thereon.
- the undercarriage can in particular include a chassis, in particular a crawler chassis.
- At least one sensor unit in particular a camera unit, a radar unit or an ultrasonic sensor or another suitable sensor, to be installed in the area of the winch drum for detecting a winding of the suspension cable the winch drum is arranged.
- a constructed as a crawler crane construction machine 10 of the invention 1 has a mobile carrier device 12 .
- the carrier device 12 includes a crawler chassis 14 on which an upper carriage 15 is rotatably mounted.
- a mast 16 is mounted on the superstructure 15 so as to be pivotable about a horizontal pivot axis and is also referred to as a cantilever arm.
- a holding beam 26, a support beam 28 and an adjusting cable mechanism 27 are provided on the superstructure 15 in a manner which is basically known.
- At least one carrying cable 20 is guided from the superstructure 15 via a mast head 18 of the mast 16, on which a compacting element 30 is suspended, which in the exemplary embodiment shown is designed as an impact weight 32 for soil compaction.
- the carrying cable 20 is driven in an adjustable manner via a double winch arrangement in the upper carriage 15, as is known in principle from the prior art.
- a cable pressing device 40 can be arranged on each of the two sections of the support cable 20, one of which on the support beam 26, also called A-frame, and the other is attached to the mast 16.
- the ends of the supporting cable 20 are each attached to a cable winch in the superstructure 15, so that a double cable winch arrangement is provided for fast lifting processes.
- a control unit can be provided on the superstructure 15, in particular in a cabin.
- the cable winch 22 has a winch drum 24 for winding and unwinding the carrying cable 20 .
- the winch drum 24 can be driven in rotation in basically both directions of rotation via a winch drive 23 shown only partially via an interposed coupling device 25 .
- the clutch device 25 can be designed as a lockable overrunning clutch or a so-called free-fall brake, with the carrying cable 20 being unwound solely by the weight of the compression element 30 in free fall, so to speak.
- the coupling device 25 can immediately reestablish a non-rotatable connection between the winch drive 23 and the winch drum 24 .
- the winch drive 23 is driven, preferably via the control unit, in a winding-up direction, clockwise in the exemplary embodiment shown, before a new connection is made by the coupling device 25 .
- a tightening torque of the winch drive 23 is applied to the winch drum 24 immediately when the coupling device 25 is coupled.
- a desired tension of the support cable 20 in the area of the cable winch 22 can thus be brought about. This effectively counteracts the formation of slack rope and in particular the transmission of a rope vibration of the suspension rope 20 to the winding of the suspension rope 20 on the winch drum 24 .
- a camera unit 50 as a sensor unit can monitor a clean winding of the supporting cable 20 on the winch drum 24 .
- a radar unit, ultrasonic or other suitable sensor such.
- B. an optical sensor, a magnetic sensor or a reed contact can be used.
- a machine operator or preferably automatically via the control unit can unwind the support cable 20 on the winch drum 24 if an undesired offset of the support cable 20 occurs before the compression element 30 being lifted off the ground again.
- the winch drum 24 can be used to wind it up cleanly, with the compression element 30 then being lifted off the ground. A clean winding of the suspension cable 20 on the winch drum 24 can thus be established.
- a fundamentally known further rope pressure device 40 with a plate-shaped pressure element 42 can be provided on the winch drum 24 .
- the pressure element 42 is movably mounted by means of a base support 46 and can be pressed against the cable winding on the winch drum 24 by means of a pressure cylinder 48 to additionally avoid a cable offset.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
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Description
Die Erfindung betrifft ein Verfahren zur Bodenverdichtung mit einer Baumaschine, wobei ein Tragseil entlang eines Mastes geführt wird, das Tragseil mittels einer drehbar gelagerten Windentrommel einer Seilwinde auf- und abgewickelt wird, die Windentrommel mittels eines Windenantriebes drehend angetrieben wird und an dem Tragseil ein Verdichtungselement angeordnet wird, welches durch das Tragseil vertikal bewegt wird, wobei das Tragseil von der Windentrommel der Seilwinde abgewickelt wird und das Verdichtungselement von einer Position oberhalb einer Bodenfläche an dem Tragseil bis zu der Bodenfläche abgesenkt wird, wobei das Verdichtungselement auf die Bodenfläche aufschlägt und dabei den Boden verdichtet, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method for soil compaction with a construction machine, in which a carrying cable is guided along a mast, the carrying cable is wound up and unwound by means of a rotatably mounted winch drum of a cable winch, the winch drum is driven in rotation by means of a winch drive and a compacting element is arranged on the carrying cable which is moved vertically by the suspension cable, the suspension cable being unwound from the winch drum of the cable winch and the compaction element being lowered from a position above a floor surface on the suspension cable down to the floor surface, the compaction element striking the floor surface and thereby hitting the floor compressed, according to the preamble of claim 1.
Die Erfindung betrifft weiterhin eine Baumaschine zur Bodenverdichtung mit einem Mast, einem Tragseil, welches entlang des Mastes geführt ist, einer Seilwinde mit einer drehbar gelagerten Windentrommel, an welcher das Tragseil zum Aufwickeln und Abwickeln angebracht ist, einem Windenantrieb zum drehenden Antreiben der Windentrommel, einem Verdichtungselement, welches zum vertikalen Bewegen an dem Tragseil angebracht ist, und einer Steuereinheit, durch welche die Seilwinde zum Abwickeln des Tragseiles von der Windentrommel betreibbar ist, wobei das Verdichtungselement an dem Tragseil bis zu einer Bodenfläche abgesenkt wird und das Verdichtungselement zum Verdichten des Bodens auf die Bodenfläche aufschlägt, gemäß dem Oberbegriff des Anspruchs 11.The invention also relates to a construction machine for soil compaction with a mast, a carrying cable which is guided along the mast, a cable winch with a rotatably mounted winch drum on which the carrying cable is attached for winding and unwinding, a winch drive for driving the winch drum in rotation, a A compacting element attached to the suspension cable for vertical movement, and a control unit by which the cable winch is operable to unwind the suspension cable from the winch drum, the compaction element on the suspension cable being lowered to a ground surface and the compacting element being raised to compact the ground hitting the ground surface, according to the preamble of claim 11.
Eine gattungsgemäße Baumaschine geht beispielsweise aus der
Bei einem Absenken eines Verdichtungselementes mittels einer solchen Baumaschine ist es üblicherweise vorgesehen, dass nach dem Auftreffen des Verdichtungselementes auf den Boden die Windentrommel mittels einer entsprechenden Bremseinrichtung abgebremst wird. Da das Verdichtungselement mit einer relativ schnellen Absenkgeschwindigkeit auf eine Bodenfläche auftrifft, kann sich an dem Tragseil sogenanntes Schlappseil und eine unerwünschte Seilschwingung ausbilden, die sich über den Mastkopf bis zu einer Windentrommel fortsetzt. Diese Seilschwingung kann dazu führen, dass Seilwicklungen an der Windentrommel aus ihrer vorgesehenen Position springen. Bei einem weiteren Betrieb der Windentrommel kann dies zu einem inkorrekten Aufwickeln des Tragseiles auf der Windentrommel führen, wobei das Seil die Rillung auf der Trommel kreuzt.When a compaction element is lowered by means of such a construction machine, it is usually provided that after the compaction element hits the ground, the winch drum is braked by means of a corresponding braking device. Since the compression element strikes a ground surface at a relatively rapid lowering speed, so-called slack rope and undesired rope oscillations can form on the support rope, which continues over the masthead to a winch drum. This rope oscillation can cause rope wraps on the winch drum to jump out of their intended position. With further operation of the winch drum, this can lead to incorrect winding of the carrying cable on the winch drum, with the cable crossing the grooves on the drum.
Eine derartige ungeordnete Seilwicklung an der Windentrommel kann zu Beschädigungen an der Windentrommel und insbesondere zu einem erhöhten Verschleiß des Tragseiles führen. Hierdurch kann sich nicht nur die Lebensdauer des Tragseiles erheblich verkürzen, sondern es kann insgesamt auch die maximale Traglast des Tragseiles beeinträchtigt werden.Such a disorderly winding of the rope on the winch drum can lead to damage to the winch drum and in particular to increased wear of the support rope. As a result, not only can the service life of the suspension cable be significantly reduced, but the maximum load capacity of the suspension cable can also be impaired overall.
Zur Sicherstellung einer korrekten Aufwicklung lehrt die
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Baumaschine zur Bodenverdichtung anzugeben, mit welchen den negativen Auswirkungen einer Seilschwingung des Tragseiles auf die Seilwicklung an der Windentrommel besonders effizient entgegengewirkt wird.The invention is based on the task of specifying a method and a construction machine for soil compaction, with which the negative effects of cable vibration of the supporting cable on the cable winding on the winch drum are counteracted in a particularly efficient manner.
Die Aufgabe wird nach der Erfindung zum einen durch ein Verfahren mit den Merkmalen des Anspruchs 1, 6 oder 9 und zum anderen durch eine Baumaschine mit den Merkmalen des Anspruchs 11 gelöst. Bevorzugte Ausführungsformen der Erfindung sind in den abhängigen Ansprüchen angegeben.The object is achieved according to the invention on the one hand by a method having the features of claim 1, 6 or 9 and on the other by a construction machine with the Features of claim 11 solved. Preferred embodiments of the invention are given in the dependent claims.
Ein erfindungsgemäßes Verfahren zur Bodenverdichtung ist dadurch gekennzeichnet, dass die Windentrommel beim Abwickeln des Tragseiles über eine Kupplungseinrichtung von dem Windenantrieb entkoppelt wird, dass noch vor einem Aufschlagen des Verdichtungselementes auf die Bodenfläche der Windenantrieb in einer Drehrichtung zum Aufwickeln des Tragseiles angetrieben wird und dass nach dem Aufschlagen des Verdichtungselementes auf die Bodenfläche die Kupplungseinrichtung die Windentrommel mit dem bereits drehend angetriebenen Windenantrieb kuppelt.A method for soil compaction according to the invention is characterized in that the winch drum is decoupled from the winch drive via a coupling device when the support cable is being unwound, that before the compaction element strikes the ground surface the winch drive is driven in a direction of rotation for winding up the support cable and that after the When the compacting element hits the ground surface, the coupling device couples the winch drum to the winch drive, which is already rotating.
Die Erfindung beruht dabei auf der Erkenntnis, dass eine unzureichende Spannung des Tragseiles im Bereich der Winde verursacht durch eine Seilschwingung dazu führen kann, dass Seilwicklungen an der Windentrommel aus ihrer vorgesehenen Position springen. Gemäß dem erfindungsgemäßen Verfahren wird der Windenantrieb über eine Kupplungseinrichtung beim Abwickeln des Tragseiles in einer Zeitspanne vor dem Aufschlagen des Verdichtungselementes auf die Bodenfläche von der Windentrommel entkoppelt. Die Bewegung der Windentrommel ist somit unabhängig von der Bewegung des Windenantriebes. Diese Unabhängigkeit kann dazu genutzt werden, den Windenantrieb frühzeitig in einer Drehrichtung zu betreiben, welche zum Aufwickeln des Tragseiles benötigt wird. Durch die Kupplungseinrichtung kann insbesondere unmittelbar nach dem Aufschlagen des Verdichtungselementes auf die Bodenfläche die Windentrommel wieder mit dem Windenantrieb verbunden oder gekuppelt werden, wobei sich das an der Antriebswelle anliegende Drehmoment des Windenantriebes unmittelbar auf die Windentrommel auswirken kann und eine daraus resultierende abrupt startende Drehbewegung der Windentrommel Richtung Aufwickeln des Tragseils zu einer sehr schnellen Seilspannung im Bereich der Winde führt.The invention is based on the knowledge that insufficient tension of the suspension cable in the area of the winch caused by cable vibration can result in cable windings on the winch drum jumping out of their intended position. According to the method according to the invention, the winch drive is decoupled from the winch drum via a coupling device when the support cable is unwound in a period of time before the compression element hits the ground surface. The movement of the winch drum is therefore independent of the movement of the winch drive. This independence can be used to operate the winch drive early in a direction of rotation, which is required to wind up the suspension cable. The coupling device allows the winch drum to be reconnected or coupled to the winch drive, particularly immediately after the compaction element has struck the ground surface, whereby the torque of the winch drive applied to the drive shaft can have a direct effect on the winch drum and a resulting abrupt starting rotary movement of the winch drum Direction of winding up the support rope leads to very rapid rope tension in the area of the winch.
Die sonst übliche Anlaufphase eines Windenantriebes wird dabei vermieden. Nach der Erfindung kann so unmittelbar nach oder beim Auftreffen des Verdichtungselementes auf die Bodenfläche über die Windentrommel eine Aufwickelkraft auf das Tragseil aufgebracht werden, so dass dieses im Bereich der Winde wieder unmittelbar gespannt wird. Aufgrund dieser sich unmittelbar einstellenden Seilspannung wird einer Bildung von Schlappseil im Bereich der Winde und einem damit verbundenen Springen von Seilwicklungen an der Windentrommel aus ihrer vorgesehenen Position in erheblichem Maße entgegengewirkt. Hierdurch reduziert sich die Gefahr eines unerwünschten Versatzes von Seilwicklungen auf der Windentrommel.The usual start-up phase of a winch drive is avoided. According to the invention, immediately after or when the compression element hits the ground surface, a winding force can be applied to the support cable via the winch drum, so that it is immediately tightened again in the area of the winch. Due to this immediately adjusting rope tension a formation of slack rope in the winch and the associated jumping of rope windings on the winch drum from their intended position counteracted to a considerable extent. This reduces the risk of unwanted misalignment of rope windings on the winch drum.
Das Tragseil kann grundsätzlich direkt mit dem Verdichtungselement verbunden sein. Bevorzugt ist eine Kette und/oder ein Stahlseilgehänge als ein Puffer zwischen dem Tragseil und dem Verdichtungselement angeordnet. Hierdurch kann beim Abbremsen eine Stauchung des Tragseiles durch Aufstehen auf dem Verdichtungselement vermieden werden. Bei einem Stahlseilgehänge kann optional zwischen Tragseil und dem Stahlseilgehänge mindestens ein zusätzliches Gewicht, etwa in Form einer Stahltraverse, angeordnet sein.In principle, the carrying cable can be connected directly to the compression element. A chain and/or a steel cable hanger is preferably arranged as a buffer between the support cable and the compression element. As a result, compression of the carrying cable by standing on the compression element can be avoided when braking. In the case of a steel cable hanger, at least one additional weight, for example in the form of a steel traverse, can optionally be arranged between the support cable and the steel cable hanger.
Grundsätzlich kann das Verfahren zur Bodenverdichtung von Hand durch einen Maschinenbediener durchgeführt werden. Besonders vorteilhaft ist es nach einer Weiterbildung der Erfindung, dass das Verfahren automatisch mittels einer Steuereinheit durchgeführt wird. Die Steuereinheit kann dabei insbesondere mit dem Windenantrieb und der Kupplungseinrichtung in Verbindung stehen und diese entsprechend betätigen. Die Steuereinheit kann auch mit einem oder mehreren Sensoren in Verbindung stehen, durch welche eine Position des Verdichtungselementes und/oder die Seilspannung erfasst wird. Die Kupplungseinrichtung kann als eine sperrbare Freilaufkupplung ausgebildet sein, wobei ein Sperren oder Entsperren von der Steuereinheit bewirkt werden kann.In principle, the soil compaction process can be carried out manually by a machine operator. According to a development of the invention, it is particularly advantageous that the method is carried out automatically by means of a control unit. The control unit can in particular be connected to the winch drive and the clutch device and actuate them accordingly. The control unit can also be connected to one or more sensors, by means of which a position of the compression element and/or the cable tension is detected. The clutch device can be designed as a lockable overrunning clutch, with locking or unlocking being able to be effected by the control unit.
Die Kupplungseinrichtung kann grundsätzlich in jeder geeigneten Weise ausgebildet sein. Besonders zweckmäßig ist es nach einer Weiterentwicklung der Erfindung, dass die Kupplungseinrichtung eine Freifallbremse umfasst, wobei ein Abwickeln des Tragseiles in einem Freifall des Verdichtungselementes erfolgt. Durch eine Freifallbremse kann nach Öffnung der Bremse die Windentrommel reibungsarm allein durch das Gewicht des am Tragseil angehängten Verdichtungselementes angetrieben werden, wobei das Verdichtungselement sozusagen im freien Fall auf die Bodenfläche aufschlagen kann. Bei diesem freien Fall ist eine gewisse Mindestzugspannung an dem Tragseil gegeben. Durch die Freifallbremse kann auf elektronischem Weg oder durch entsprechende mechanische Komponenten bei einem Auftreffen auf die Bodenfläche und einer dabei auftretenden Reduzierung der Seilspannung ein Freifall- oder Freilaufmodus beendet werden, wobei unmittelbar ein Kuppeln, also die Herstellung einer drehmomentübertragenden Verbindung, zwischen dem Windenantrieb und der Windentrommel hergestellt werden. Die Freifallbremse, die ein Teil der Kupplungseinrichtung sein kann oder diese insgesamt bildet, kann in Verbindung mit der Steuereinheit stehen, welche grundsätzlich eine elektronische Rechnereinheit umfassen kann.In principle, the coupling device can be designed in any suitable manner. According to a further development of the invention, it is particularly expedient for the coupling device to comprise a free-fall brake, with the carrying cable being unwound when the compression element is in free fall. After opening the brake, a free-fall brake allows the winch drum to be driven with low friction solely by the weight of the compression element attached to the supporting cable, with the compression element being able to hit the ground surface in free fall, so to speak. In this free fall, there is a certain minimum tensile stress on the suspension cable. The free-fall brake can be used electronically or by appropriate mechanical components to prevent a free-fall when it hits the ground and there is a reduction in cable tension. or free-running mode are ended, with a coupling, ie the production of a torque-transmitting connection, being produced directly between the winch drive and the winch drum. The free-fall brake, which can be part of the clutch device or form it as a whole, can be connected to the control unit, which can basically include an electronic computer unit.
Grundsätzlich kann die Kupplungseinrichtung zu jedem beliebigen Zeitpunkt betätigt werden. Eine bevorzugte Verfahrensvariante der Erfindung besteht darin, dass die Kupplungseinrichtung bei Erreichen der Bodenfläche durch das Verdichtungselement ein Kuppeln durchführt. Damit ist sichergestellt, dass zum einen eine möglichst freie Fallbewegung des Verdichtungselementes erreicht wird und zum anderen unmittelbar nach Auftreffen auf dem Boden eine Drehmomentübertragung von dem Windenantrieb auf die Windentrommel zur Erzeugung einer gewünschten Seilspannung des Tragseiles im Bereich der Winde gegeben ist.In principle, the clutch device can be actuated at any point in time. A preferred method variant of the invention consists in the coupling device carrying out a coupling when the compacting element reaches the ground surface. This ensures that, on the one hand, the compression element falls as freely as possible and, on the other hand, torque is transmitted from the winch drive to the winch drum immediately after it hits the ground in order to generate the desired cable tension of the carrying cable in the area of the winch.
Grundsätzlich kann ein beliebiges Drehmoment für eine beliebige Zeitspanne an dem Windenantrieb eingestellt werden. Gemäß einer Weiterbildung des erfindungsgemäßen Verfahrens ist es vorteilhaft, dass durch den Windenantrieb beim Kuppeln ein Anzugsdrehmoment erzeugt wird, durch welches das Tragseil im Bereich der Winde gespannt wird. Das Anzugsdrehmoment kann vorzugsweise so ausgebildet sein, dass dieses zu einer gewünschten Seilspannung führt, jedoch das Verdichtungselement nicht vom Boden angehoben wird. Zum Anheben kann dann ein zweites, höheres Drehmoment eingestellt werden. Es ist jedoch auch die Einstellung eines Anzugsdrehmoments möglich, bei dem unmittelbar ein Anheben des Verdichtungselementes erfolgt, so dass dieses zu einer Ausgangsposition oberhalb der Bodenfläche zurückbewegt werden kann, um einen weiteren Verdichtungsvorgang durchzuführen.In principle, any torque can be set on the winch drive for any period of time. According to a development of the method according to the invention, it is advantageous that a tightening torque is generated by the winch drive when coupling, by means of which the carrying cable is tensioned in the area of the winch. The tightening torque can preferably be designed in such a way that this leads to a desired cable tension, but the compression element is not lifted from the ground. A second, higher torque can then be set for lifting. However, it is also possible to set a tightening torque at which the compression element is immediately lifted so that it can be moved back to a starting position above the ground surface in order to carry out a further compression process.
Gemäß einer Ausgestaltung des Verfahrens ist vorgesehen, dass nach dem Aufschlagen des Verdichtungselementes auf den Boden das Tragseil im Bereich der Winde zunächst kurz gespannt und anschließend vor einem erneuten Anheben des Verdichtungselementes vom Boden das Tragseil automatisch durch die Steuereinheit von der Windentrommel um einen gewissen Betrag abgewickelt wird. Vorzugsweise wird das Tragseil im direkten Anschluss wieder aufgewickelt.According to one embodiment of the method, it is provided that after the compaction element has hit the ground, the carrying cable in the area of the winch is first briefly stretched and then, before the compacting element is lifted from the ground again, the carrying cable is automatically unwound from the winch drum by a certain amount by the control unit becomes. Preferably, the carrying cable is wound up again immediately afterwards.
Gemäß diesem Verfahren nach der Erfindung ist vorgesehen, einem inkorrekten Aufwickeln des Tragseils auf der Windentrommel dadurch entgegenzuwirken, indem das Tragseil zuerst im Bereich der Winde ohne Anheben des Verdichtungselementes vom Boden kurz gespannt wird. Im Anschluss, vor einem Anheben des Verdichtungselementes vom Boden wird das so gespannte Tragseil automatisch durch die Steuereinheit um einen gewissen Betrag abgewickelt und entspannt, wobei ein möglicherweise aufgetretener Versatz der Wicklung auf der Windentrommel durch Abwickeln wieder entfernt wird.According to this method according to the invention, it is provided to counteract an incorrect winding of the carrying cable on the winch drum by first briefly tensioning the carrying cable in the region of the winch without lifting the compression element from the ground. Subsequently, before the compression element is lifted from the ground, the carrying cable tensioned in this way is automatically unwound and relaxed by the control unit by a certain amount, any misalignment of the winding on the winch drum that may have occurred being removed again by unwinding.
Anschließend kann das Tragseil wieder automatisch durch die Steuereinheit aufgewickelt und das Verdichtungselement vom Boden abgehoben werden, bis das Verdichtungselement wieder die gewünschte Ausgangsposition oberhalb des Bodens für einen erneuten Verdichtungsvorgang erreicht.The carrying cable can then be automatically wound up again by the control unit and the compaction element can be lifted off the ground until the compaction element again reaches the desired starting position above the ground for a renewed compaction process.
Bei diesem erfindungsgemäßen Verfahren ist sichergestellt, dass selbst bei einem aufgetretenen Versatz an der Seilwicklung dieser automatisch durch die Steuereinheit wieder zuverlässig beseitigt wird und sich so keine bleibende inkorrekte Wicklung des Tragseiles an der Windentrommel ausbilden kann. Hierdurch wird ebenfalls einem Seilverschleiß zuverlässig entgegengewirkt.With this method according to the invention it is ensured that even if an offset occurs on the cable winding, this is automatically and reliably eliminated again by the control unit and thus no permanent incorrect winding of the support cable can form on the winch drum. This also reliably counteracts cable wear.
Der Betrag oder das Maß des Abwickelns des Tragseiles vor einem erneuten Anheben des Verdichtungselementes durch Aufwickeln des Tragseiles kann in jeder geeigneten Weise eingestellt werden. Besonders vorteilhaft ist es nach einer Weiterbildung der Erfindung, dass ein Abwickeln des Tragseiles soweit erfolgt, bis eine korrekte Wicklung des Tragseiles auf der Windentrommel gegeben ist. Hierdurch wird auch langfristig eine saubere Wicklung und damit ein geringer Verschleiß des Tragseiles sichergestellt.The amount or degree of unwinding of the suspension cable before lifting the compression element again by winding up the suspension cable can be adjusted in any suitable manner. According to a further development of the invention, it is particularly advantageous that the carrying cable is unwound until the carrying cable is wound correctly on the winch drum. This ensures clean winding over the long term and therefore less wear and tear on the suspension cable.
Die Wicklung kann dabei bei entsprechender Anordnung der Windentrommel an einer Baumaschine unmittelbar durch einen Maschinenbediener aus einer Bedienkabine beobachtet werden. Eine saubere Seilwicklung kann auch bei einer beliebigen Anordnung der Windentrommel nach einer Weiterentwicklung der Erfindung dadurch sichergestellt werden, dass mittels einer Sensoreinheit, insbesondere einer Kameraeinheit oder einer Radareinheit oder einem anderen geeigneten Sensor, eine Wicklung des Tragseiles auf der Windentrommel erfasst wird. Das Bild der Kameraeinheit etwa kann dabei einem Maschinenbediener in der Maschinenkabine angezeigt werden. Eine Erfassung kann optisch, berührungslos über Energiewellen, taktil, elektronisch, magnetisch, durch Reed-Kontakt oder in einer sonstigen geeigneten Weise erfolgen.With a corresponding arrangement of the winch drum on a construction machine, the winding can be observed directly by a machine operator from a control cabin. Clean cable winding can also be ensured with any arrangement of the winch drum according to a further development of the invention by using a sensor unit, in particular a camera unit or a radar unit or another suitable sensor, to detect a winding of the suspension cable on the winch drum. The image of the camera unit for example, it can be displayed to a machine operator in the machine cabin. Detection can take place optically, without contact using energy waves, tactilely, electronically, magnetically, by reed contact or in any other suitable manner.
Alternativ oder ergänzend kann die Sensoreinheit mit der Steuereinheit in Verbindung stehen, welche anhand von durch die Sensoreinheit erfassten Signalen oder Daten ermittelt, ob eine korrekte Wicklung auf der Windentrommel gegeben ist. Das Signal oder die Daten können insbesondere ein Bild sein. Das erfasste Sensorsignal zur Seilwicklung wird elektronisch, etwa mit einer Bildverarbeitungssoftware, ausgewertet. Abhängig von einem eventuell festgestellten Versatz einer Seilwicklung auf der Windentrommel kann durch den Maschinenbediener oder die Steuereinheit ein Betrag oder ein Maß der Abwicklung des Tragseiles individuell eingestellt werden, bis eine korrekte Seilwicklung an der Windentrommel gegeben ist. Der Betrag der Abwicklung kann als ein Drehwinkelmaß für die Windentrommel oder ein Längenmaß für das Tragseil oder eine Zeitspanne für die Ansteuerung des Windenantriebs (mit definierter Geschwindigkeit) vorgegeben sein.Alternatively or additionally, the sensor unit can be connected to the control unit, which uses signals or data recorded by the sensor unit to determine whether the winding on the winch drum is correct. The signal or the data can in particular be an image. The sensor signal recorded for the rope winding is evaluated electronically, for example with image processing software. Depending on a possible misalignment of a cable winding on the winch drum, the machine operator or the control unit can set an amount or a measure of the unwinding of the support cable individually until the cable winding on the winch drum is correct. The amount of unwinding can be specified as an angle of rotation for the winch drum or a length for the carrying cable or a period of time for the control of the winch drive (at a defined speed).
Nach einer Weiterbildung des erfindungsgemäßen Verfahrens ist es vorgesehen, dass der Betrag der Abwicklung des Tragseiles vor einem erneuten Hubvorgang des Verdichtungselementes automatisch durch die Steuereinheit oder durch einen Maschinenbediener eingestellt wird. Der Betrag kann gleichbleibend oder veränderlich sein.According to a further development of the method according to the invention, it is provided that the amount of unwinding of the support cable is set automatically by the control unit or by a machine operator before a renewed lifting process of the compression element. The amount can be constant or variable.
Hinsichtlich der Baumaschine ist die Erfindung dadurch gekennzeichnet, dass eine Steuereinheit vorgesehen ist, welche zum Durchführen eines der zuvor beschriebenen Verfahren zur Bodenverdichtung ausgebildet ist. Die Steuereinheit kann dabei insbesondere eine elektronische Steuereinheit sein und insbesondere in eine bestehende Steuereinheit einer Baumaschine integriert werden.With regard to the construction machine, the invention is characterized in that a control unit is provided, which is designed to carry out one of the methods for soil compaction described above. The control unit can in particular be an electronic control unit and in particular can be integrated into an existing control unit of a construction machine.
Grundsätzlich kann die Windentrommel auch unmittelbar am Mast und insbesondere in einem oberen Bereich des Mastes angeordnet sein. Besonders zweckmäßig ist es nach einer Weiterbildung der Erfindung, dass das Tragseil über einen Mastkopf am oberen Ende des Mastes geführt ist. Die Windentrommel und der Windenantrieb können so insbesondere unmittelbar oder nahe an einem Trägergerät vorgesehen sein, so dass die Baumaschine insgesamt einen möglichst tiefliegenden Gesamtschwerpunkt aufweist.In principle, the winch drum can also be arranged directly on the mast and in particular in an upper region of the mast. According to a further development of the invention, it is particularly expedient for the carrying cable to be guided over a mast head at the upper end of the mast. The winch drum and the winch drive can thus be provided directly or close to a carrier device be so that the construction machine as a whole has as low an overall center of gravity as possible.
Das Trägergerät kann insbesondere einen Unterwagen mit einem darauf drehbar gelagerten Oberwagen aufweisen. Der Unterwagen kann insbesondere ein Fahrwerk, insbesondere ein Raupenfahrwerk, umfassen.The carrier device can in particular have an undercarriage with an uppercarriage rotatably mounted thereon. The undercarriage can in particular include a chassis, in particular a crawler chassis.
Zur Sicherstellung einer korrekten Wicklung auf der Windentrommel ist es nach einer Weiterbildung der Erfindung zweckmäßig, dass im Bereich der Windentrommel mindestens eine Sensoreinheit, insbesondere eine Kameraeinheit, eine Radareinheit oder ein Ultraschall- bzw. ein weiterer geeigneter Sensor, zum Erfassen einer Wicklung des Tragseiles auf der Windentrommel angeordnet ist.To ensure correct winding on the winch drum, it is expedient according to a development of the invention for at least one sensor unit, in particular a camera unit, a radar unit or an ultrasonic sensor or another suitable sensor, to be installed in the area of the winch drum for detecting a winding of the suspension cable the winch drum is arranged.
Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispieles weiter erläutert, welches schematisch in den beigefügten Zeichnungen dargestellt ist. In den Zeichnungen zeigen:
- Fig. 1
- eine Seitenansicht einer erfindungsgemäßen Baumaschine, und
- Fig. 2
- eine perspektivische Detailansicht einer Windentrommel.
- 1
- a side view of a construction machine according to the invention, and
- 2
- a perspective detailed view of a winch drum.
Eine als Raupenkran ausgebildete erfindungsgemäße Baumaschine 10 von
Über einen Mastkopf 18 des Mastes 16 ist vom Oberwagen 15 mindestens ein Tragseil 20 geführt, an welchem ein Verdichtungselement 30 aufgehängt ist, welches in dem dargestellten Ausführungsbeispiel als ein Aufschlaggewicht 32 für eine Bodenverdichtung ausgebildet ist. In dem Ausführungsbeispiel ist das Tragseil 20 über eine doppelte Windenanordnung in dem Oberwagen 15 verstellbar angetrieben, wie dies grundsätzlich aus dem Stand der Technik bekannt ist. Zur Vermeidung einer Seilschwingung können an den insgesamt zwei Abschnitten des Tragseiles 20 jeweils eine Seilandruckeinrichtung 40 angeordnet sein, von denen eine an dem Halteträger 26, auch A-Bock genannt, und die andere an dem Mast 16 angebracht ist. Die Enden des Tragseils 20 sind jeweils an einer Seilwinde im Oberwagen 15 angebracht, so dass eine Doppelseilwindenanordnung für schnelle Hubvorgänge gegeben ist. Am Oberwagen 15 kann insbesondere in einer Kabine eine Steuereinheit vorgesehen sein.At least one carrying
Gemäß
Die Kupplungseinrichtung 25 kann als eine sperrbare Freilaufkupplung oder eine sogenannte Freifallbremse ausgebildet sein, wobei das Tragseil 20 allein über das Gewicht des Verdichtungselementes 30 sozusagen im freien Fall abgewickelt wird. Beim Aufschlagen des Verdichtungselementes 30 auf eine Bodenfläche zur Bodenverdichtung kann die Kupplungseinrichtung 25 unmittelbar wieder eine drehfeste Verbindung zwischen dem Windenantrieb 23 und der Windentrommel 24 herstellen.The
Gemäß der Erfindung ist dabei vorgesehen, dass bereits vor einem erneuten Verbinden durch die Kupplungseinrichtung 25 der Windenantrieb 23 vorzugsweise über die Steuereinheit in eine Aufwickelrichtung, im dargestellten Ausführungsbeispiel im Uhrzeigersinn, angetrieben wird. Somit liegt unmittelbar beim Kuppeln durch die Kupplungseinrichtung 25 ein Anzugsdrehmoment des Windenantriebes 23 an der Windentrommel 24 an. So kann eine gewünschte Spannung des Tragseiles 20 im Bereich der Seilwinde 22 bewirkt werden. Hierdurch wird der Ausbildung von Schlappseil und insbesondere der Übertragung einer Seilschwingung des Tragseiles 20 auf die Wicklung des Tragseiles 20 auf der Windentrommel 24 effektiv entgegengewirkt. Eine saubere Wicklung des Tragseiles 20 auf der Windentrommel 24 kann von einer Kameraeinheit 50 als Sensoreinheit überwacht werden. Anstelle der Kameraeinheit 50 kann auch eine Radareinheit, Ultraschall- oder ein anderer geeigneter Sensor wie z. B. ein optischer Sensor, ein Magnetsensor oder ein Reed-Kontakt verwendet werden.According to the invention, provision is made for the
Abhängig von dem erfassten Bild bzw. Sensorsignal durch die Kameraeinheit 50 bzw. dem angezeigten Sensorsignal kann über einen Maschinenbediener oder vorzugsweise automatisch über die Steuereinheit beim Auftreten eines unerwünschten Versatzes des Tragseiles 20 an der Windentrommel 24 eine Abwicklung des Tragseiles 20 erfolgen, bevor das Verdichtungselement 30 wieder vom Boden angehoben wird.Depending on the image or sensor signal captured by the
Insbesondere nach Beruhigung einer Seilschwingung kann über die Windentrommel 24 ein sauberes Aufwickeln mit einem anschließenden Abheben des Verdichtungselementes 30 vom Boden erfolgen. So kann sich eine saubere Wicklung des Tragseiles 20 auf der Windentrommel 24 einstellen.In particular, after a cable vibration has calmed down, the
Ergänzend kann an der Windentrommel 24 eine grundsätzlich bekannte weitere Seilandruckeinrichtung 40 mit einem plattenförmigen Andruckelement 42 vorgesehen sein. Das Andruckelement 42 ist bewegbar mittels eines Grundträgers 46 gelagert und kann mittels eines Andruckzylinders 48 zur zusätzlichen Vermeidung eines Seilversatzes an die Seilwicklung auf der Windentrommel 24 angedrückt werden.In addition, a fundamentally known further
Claims (13)
- Method for soil compaction using a construction machine (10), wherein- a support cable (20) is guided along a mast (16),- the support cable (20) is wound and unwound by means of a rotatably mounted winch drum (24) of a cable winch (22),- the winch drum (24) is driven in rotation by means of a winch drive (23), and- there is arranged on the support cable (20) a compacting element (30) which is moved vertically by the support cable (20), wherein the support cable (20) is unwound from the winch drum (24) of the cable winch (22) and the compacting element (30) is lowered from a position above a soil surface on the support cable (20) to the soil surface, wherein the compacting element (30) strikes the soil surface and the soil is thereby compacted,
characterised in that- the winch drum (24) is uncoupled from the winch drive (23) by means of a coupling device (25) while the support cable (20) is being unwound,- even before the compacting element (30) strikes the soil surface, the winch drive (23) is driven in a rotational direction for winding the support cable (20), and- after the compacting element (30) has struck the soil surface, the coupling device (25) couples the winch drum (24) with the winch drive (23) which is already being driven in rotation. - Method according to claim 1,
characterised in that
the method is carried out automatically by means of a control unit. - Method according to claim 1 or 2,
characterised in that
the coupling device (25) comprises a free-fall brake, wherein the support cable (20) is unwound in the event of free fall of the compacting element (30). - Method according to any one of claims 1 to 3,
characterised in that
when the compacting element (30) reaches the soil surface, the coupling device (25) carries out coupling. - Method according to any one of claims 1 to 4,
characterised in that
a tightening torque is generated by the winch drive (23) in coupling, by means of which tightening torque the support cable (20) is tensioned in the region of the cable winch (22). - Method according to any one of claims 1 to 5,
characterised in that
after the compacting element (30) has struck the soil, the support cable (20) is first tensioned in the region of the cable winch (22) and then, before the compacting element (30) is lifted from the soil again, the support cable (20) is automatically unwound by the control unit from the winch drum (24) by a certain amount, which can preferably be set by the driver of the machine. - Method according to claim 6,
characterised in that
the support cable (20) is unwound until the support cable (20) is wound correctly on the winch drum (24). - Method according to either claim 6 or claim 7,
characterised in that
the amount by which the support cable (20) is unwound before the compacting element (30) is lifted again is set by a machine operator or automatically by a control unit. - Method according to any one of claims 1 to 8,
characterised in that
winding of the support cable (20) on the winch drum (24) is detected by means of a sensor unit, in particular a camera unit (50) or a radar unit. - Method according to claim 9,
characterised in that
the sensor unit is in communication with a control unit which determines, on the basis of a signal acquired from the sensor unit, whether there is correct winding on the winch drum (24). - Construction machine for soil compaction, comprising- a boom (16),- a support cable (20) which is guided along the boom (16),- a cable winch (22) having a rotatably mounted winch drum (24) to which the support cable (20) is attached for winding and unwinding,- a winch drive (23) for driving the winch drum (24) in rotation,- a compacting element (30) which is arranged on the support cable (20) for vertical movement, and- a control unit by means of which the cable winch can be operated to unwind the support cable (20) from the winch drum, wherein the compacting element (30) is lowered on the support cable (20) to a soil surface and the compacting element (30) strikes the soil surface in order to compact the soil,characterised in that
there is provided a control unit which is configured to carry out the method for soil compaction according to any one of claims 1 to 10. - Construction machine according to claim 11,
characterised in that
the support cable (20) is guided by way of a boom head (18) at the top end of the boom (16). - Construction machine according to claim 11 or 12,
characterised in that
there is arranged in the region of the winch drum (24) at least one sensor unit, in particular a camera unit (50) or a radar unit, for detecting incorrect winding of the support cable (20) on the winch drum (24).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP22204100.6A EP4144919A3 (en) | 2020-11-11 | 2020-11-11 | Method and construction machine for soil compaction |
EP23186219.4A EP4249685A3 (en) | 2020-11-11 | 2020-11-11 | Method and construction machine for soil compaction |
EP20206938.1A EP4001509B1 (en) | 2020-11-11 | 2020-11-11 | Method and construction machine for soil compaction |
Applications Claiming Priority (1)
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EP20206938.1A EP4001509B1 (en) | 2020-11-11 | 2020-11-11 | Method and construction machine for soil compaction |
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EP23186219.4A Division EP4249685A3 (en) | 2020-11-11 | 2020-11-11 | Method and construction machine for soil compaction |
EP23186219.4A Division-Into EP4249685A3 (en) | 2020-11-11 | 2020-11-11 | Method and construction machine for soil compaction |
EP22204100.6A Division EP4144919A3 (en) | 2020-11-11 | 2020-11-11 | Method and construction machine for soil compaction |
EP22204100.6A Division-Into EP4144919A3 (en) | 2020-11-11 | 2020-11-11 | Method and construction machine for soil compaction |
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EP4001509A1 EP4001509A1 (en) | 2022-05-25 |
EP4001509B1 true EP4001509B1 (en) | 2023-09-06 |
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Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP23186219.4A Pending EP4249685A3 (en) | 2020-11-11 | 2020-11-11 | Method and construction machine for soil compaction |
EP22204100.6A Pending EP4144919A3 (en) | 2020-11-11 | 2020-11-11 | Method and construction machine for soil compaction |
EP20206938.1A Active EP4001509B1 (en) | 2020-11-11 | 2020-11-11 | Method and construction machine for soil compaction |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
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EP23186219.4A Pending EP4249685A3 (en) | 2020-11-11 | 2020-11-11 | Method and construction machine for soil compaction |
EP22204100.6A Pending EP4144919A3 (en) | 2020-11-11 | 2020-11-11 | Method and construction machine for soil compaction |
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EP (3) | EP4249685A3 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1040215B (en) * | 1955-06-17 | 1958-10-02 | Asea Ab | Device to avoid slack rope formation |
JPH076182B2 (en) * | 1987-04-23 | 1995-01-30 | 日立建機株式会社 | Construction management device of dynamic consolidation method |
CN106149671B (en) * | 2015-03-23 | 2018-09-04 | 徐工集团工程机械股份有限公司 | The control system and method and dynamic compaction machinery of dynamic compaction machinery automatic job |
DE102015115146A1 (en) * | 2015-09-09 | 2017-03-09 | Bauer Maschinen Gmbh | Construction machine and method for moving up and down a lifting element |
DE102016008819A1 (en) * | 2016-07-19 | 2018-01-25 | Liebherr-Werk Nenzing Gmbh | Blows optimization |
CN107829424A (en) * | 2017-11-08 | 2018-03-23 | 泰安大地强夯重工科技有限公司 | A kind of automatic remote control dynamic compaction machinery |
EP3708528B1 (en) * | 2019-03-12 | 2021-10-13 | BAUER Maschinen GmbH | Working machine and method for operating same |
-
2020
- 2020-11-11 EP EP23186219.4A patent/EP4249685A3/en active Pending
- 2020-11-11 EP EP22204100.6A patent/EP4144919A3/en active Pending
- 2020-11-11 EP EP20206938.1A patent/EP4001509B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP4144919A3 (en) | 2023-04-26 |
EP4144919A2 (en) | 2023-03-08 |
EP4249685A3 (en) | 2023-10-18 |
EP4001509A1 (en) | 2022-05-25 |
EP4249685A2 (en) | 2023-09-27 |
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