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EP2889431B1 - Working machine for the operation of a dig bucket - Google Patents

Working machine for the operation of a dig bucket Download PDF

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Publication number
EP2889431B1
EP2889431B1 EP14196941.0A EP14196941A EP2889431B1 EP 2889431 B1 EP2889431 B1 EP 2889431B1 EP 14196941 A EP14196941 A EP 14196941A EP 2889431 B1 EP2889431 B1 EP 2889431B1
Authority
EP
European Patent Office
Prior art keywords
digging
dragline
rope
guide
work machine
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.)
Active
Application number
EP14196941.0A
Other languages
German (de)
French (fr)
Other versions
EP2889431A2 (en
EP2889431A3 (en
Inventor
Johann Zimmermann
Tizian Lamprecht
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liebherr Werk Nenzing GmbH
Original Assignee
Liebherr Werk Nenzing GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liebherr Werk Nenzing GmbH filed Critical Liebherr Werk Nenzing GmbH
Publication of EP2889431A2 publication Critical patent/EP2889431A2/en
Publication of EP2889431A3 publication Critical patent/EP2889431A3/en
Application granted granted Critical
Publication of EP2889431B1 publication Critical patent/EP2889431B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/58—Component parts
    • E02F3/60—Buckets, scrapers, or other digging elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4402—Guiding arrangements to control paying-out and re-storing of the material
    • B65H75/4405—Traversing devices; means for orderly arranging the material on the drum
    • B65H75/4407—Traversing devices; means for orderly arranging the material on the drum positively driven, e.g. by a transmission between the drum and the traversing device
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/48—Drag-lines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/58—Component parts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2016—Winches

Definitions

  • the invention relates to a work machine, in particular a rope excavator, for scraper operation, with a scraper picked up via a hoist rope, the bucket being retractable by means of at least one digging rope to carry out the digging movement and a digging rope guide for guiding the digging rope being arranged on the working machine.
  • the invention relates to the use of a scraper in a work machine, in particular a rope excavator.
  • the term "scraping” or “scraping insert” is also used in the specialist literature.
  • the work machine or rope excavator is equipped with a so-called scraper or dragline shovel as a working device.
  • the generally trough-shaped bucket is connected to the machine with two ropes, namely the hoisting rope and the digging rope.
  • the scraper is ejected as far from the machine as possible via the hoist rope.
  • the digging rope runs directly from the superstructure of the work machine or the excavator to the attachment point on the scraper, whereby pulling the digging rope creates a digging movement of the bucket along the surface of the earth and the superficial soil material is picked up through the bucket opening.
  • the scraper can then be lifted with the hoisting rope when the digging rope is taut and emptied at the emptying point by slackening the digging rope.
  • a generic work machine according to the preamble of claim 1 is from U.S. 1,572,228 known.
  • the object of the present invention is to show a possibility for an improved digging cable guide which allows less wear and tear and greater flexibility with regard to the digging cable winch used.
  • This object is achieved by a work machine, in particular a rope excavator, according to the features of claim 1.
  • Advantageous configurations of the work machine or the cable excavator are the subject matter of the dependent claims 2 to 7.
  • a work machine in particular a hydraulic cable excavator, is proposed for scraper operation, the work machine having a scraper insert received via the hoist rope.
  • the work machine includes an actuatable digging rope which is attached to the end of the scraper insert. By pulling in the digging rope, a scraping movement of the scraper insert can be carried out.
  • the digging rope runs from the superstructure of the work machine or the rope excavator to the scraper bucket insert, while the hoisting rope is guided over the boom tip of the rope excavator to the scraper bucket insert.
  • a digging rope guide for guiding the digging rope in the area of the construction of the work machine or the excavator body, in particular in the area of the excavator superstructure, which is designed to be movable, in particular linearly movable, so that the guiding direction of the digging rope guide is adjustable.
  • the digging rope guide is designed in particular to be linearly movable relative to the work machine.
  • the digging rope guide is used to regulate the deflection angle of the digging rope on a digging winch. Due to the linearly movable arrangement of the digging rope guide on the work machine or the rope excavator, the deflection angle of the digging rope on the digging rope winch can be varied, in particular the deflection angle can be kept as small as possible.
  • the present invention enables greater flexibility in the selection of a suitable form or type of winch and with regard to the positioning of the digging winch on the cable excavator.
  • a digging cable winch with LEBUS grooves is particularly preferred, which allows the digging cable to be wound in multiple layers for scraper operation.
  • the digging cable guide can be moved or shifted transversely to the guide direction, i.e. transversely to the course of the digging cable, i.e. in the horizontal direction.
  • the lateral guidance of the digging rope can be easily regulated in order to keep the deflection angle of the digging rope in relation to the digging cable winch within a tolerable range.
  • one or more drive means are arranged on or in the area of the digging cable guide in order to enable an automatic linear movement or automatic shifting of the digging cable guide.
  • the arrangement of one or more drive means also enables automated control and / or regulation of the digging rope guidance during the scraper operation.
  • Hydraulically or electrically actuated actuators or actuating cylinders can be used as the drive means.
  • any type of drive for the automatic adjustment of the digging rope guide is conceivable, as long as the forces required to carry out the adjustment movement and / or to maintain the position of the digging rope guide can be applied.
  • control means are provided for controlling the one or more drive means.
  • the automated control and / or regulation of the adjusting movement of the digging rope guide during the scraper operation is achieved via the control means.
  • the adjustment movement of the digging cable guide is controlled or regulated as a function of the detected cable deflection angle of the digging cable in relation to the digging cable winch.
  • the cable deflection angle can be detected, for example, by a suitable sensor system, the sensor system being communicatively connected to the control means for the transmission of measured values, either indirectly or directly.
  • the control means (s) preferably comprise a control logic which controls the one or more drive means in such a way that the digging rope is wound up with a deflection angle lying within the tolerance range.
  • the control means should in particular minimize the diagonal pull of the digging cable on the digging cable winch as far as possible.
  • the digging rope guide comprises at least one upper and at least one lower rope pulley.
  • the axes of rotation of the pulleys are parallel to each other.
  • the at least two pulleys are advantageously arranged one above the other, the digging rope runs through the gap formed between the two pulleys.
  • it can also be arranged pivotably with respect to the work machine, in particular over a pivot angle of 360 °. In the starting position, the pulleys have horizontal axes of rotation.
  • the digging rope guide comprises at least two opposite roller bodies arranged parallel to one another.
  • the roller bodies can be mounted or arranged in a rotatable or stationary manner on the digging rope guide.
  • the at least two opposite roller bodies are arranged at the front rope entry area of the digging rope guide.
  • the lateral deflection of the digging rope is prevented or limited with the aid of the roller bodies, which are vertical in the starting position of the digging cable guide.
  • the axes of rotation of the roller bodies run perpendicular to the axes of rotation of the rope pulleys.
  • the digging rope runs between the gap formed between the opposing roller bodies and the subsequently arranged rope pulleys.
  • the present invention relates to a digging cable guide for a work machine or cable excavator according to the present invention or an advantageous embodiment of the present invention.
  • the digging rope guide accordingly has the same advantages and properties as the work machine according to the invention, which is why a repetitive description is dispensed with at this point.
  • the digging cable guide is designed so that it can be detachably connected to the work machine or the cable excavator, in particular to the superstructure of the cable excavator.
  • the arrangement on the articulation piece of the superstructure is conceivable.
  • the correct positioning of the adjusting device can guarantee the maximum rope angle of the digging rope on the winch.
  • a direction-dependent movement of the winch can be detected via a measuring device on the winch.
  • a control computer can now use the known geometric data of the winch to calculate the current rope departure position above the winch. This allows the adjustment device of the digging rope guide to be set to the correct position.
  • the adjustment device is positioned so that the deflection angle of the rope on the winch is as close as possible to zero degrees or that the maximum permissible deflection angle is is not exceeded in any case.
  • the current position of the adjustment device can be measured back using a further measuring device and, if necessary, corrected.
  • Figure 1 shows a side view of the dragline excavator according to the invention for the scraper operation.
  • the invention is explained below with the aid of a rope excavator.
  • the digging rope guide used can, however, in principle be used as a working device for any work machine, as long as the necessary requirements of the work machine, for example a hoist rope, are given.
  • the rope excavator 10 shown is designed as a crawler excavator.
  • the hoist rope 20, starting from the superstructure of the crawler excavator 10, is guided over the lattice boom and the roller head arranged at the tip to the scraper 30.
  • the scraper 30 can be raised via the hoist rope 20 and with the largest possible Distance to the superstructure.
  • the hoisting rope 20 is actuated by means of the hoisting rope winch 21.
  • the scraper 30 is also connected to the digging cable 40 of the rope excavator 10, which can be wound up and unwound by a digging cable winch 41 arranged on the superstructure.
  • the pulling-in movement of the digging rope 40 leads to a digging movement of the scraper 30.
  • the scraper 30 shown is trough-shaped and digs when pulling the digging rope 40 along its contact surface with the bucket opening first over the surface of the earth, so that the interior of the bucket 30 is filled with the earth to be picked up .
  • a digging cable guide 50 through which the digging cable 40 is guided starting from the bucket 30 as far as the digging cable winch 41, is arranged on the articulation piece 60 of the excavator superstructure.
  • FIG Figure 2 A sectional view of the digging rope guide 50 according to the invention along a vertical sectional plane is shown in FIG Figure 2 refer to.
  • the two rope guide rollers 52 arranged one above the other can be seen, which form a gap in the adjoining area through which the digging rope 40 is guided.
  • the axes of rotation of the two rope pulleys 52 are arranged parallel to one another and both lie in the horizontal plane. The direction of rotation of the pulleys is opposite.
  • rollers 53 At the entrance of the digging cable guide, two opposing rollers 53 are provided which limit the lateral deflection angle of the digging cable 40 in the horizontal plane.
  • the rollers 53 have vertical axes of rotation arranged parallel to one another, with FIG Figure 2 only one of the two rollers 53 can be seen on the basis of the sectional view.
  • the entire digging rope guide is attached to the pivot piece 60 of the superstructure.
  • the digging cable winch 41 can be seen, onto which the digging cable 40 is wound.
  • the digging cable winch 41 has a so-called LEBUS grooving, which enables the digging cable 40 to be wound multiple times when the digging cable is in operation.
  • the displaceable or adjustable arrangement of the digging rope guide 50 with respect to the rope excavator or the articulation piece 60 can be seen on the basis of the perspective illustration in FIG Figure 3 explain.
  • the rope pulleys 52 of the digging rope guide 50 are received between the two side plates 54, at the foremost point of which one of the above-described rollers 53 is rotatably clamped.
  • Both side plates 54 are tapered on the side facing the pivot piece 60 in order to be received by the tubular receptacle 56 of the base plate 55.
  • the base plate 55 of the digging rope guide 50 is also supported by two guide rails 58 of the articulation plate 57 so that it can be moved relative to the latter. By means of the guide rails 58, the base plate 55 can be displaced in the horizontal direction with respect to the pivot piece 60.
  • the articulation plate 57 is releasably bolted to the articulation piece via the bolting points 61, so that the digging cable guide 50 can be removed during regular rope excavator operation or an existing rope excavator can simply be retrofitted with a suitable articulation piece.
  • the displacement is brought about by two hydraulic, detachable actuating cylinders 80 which are connected on the cylinder side to the articulation plate 60 and on the piston side to the base plate. Both cylinders 80 are parallel to a respective guide rail 58.
  • the guide axis of the digging rope guide 50 is aligned with the central axis of the pivot piece 60.
  • the digging rope guide 50 can move horizontally with respect to the central axis of the pivot piece 60 be shifted to the right or left.
  • the digging cable guide 50 can be pivoted relative to the cable excavator 10 or the receptacle 56.
  • the roller head of the digging rope guide 50 formed from side plates 54, rollers 52 and rollers 53, can be pivoted, for example, through a pivot angle of 360 °.
  • FIG. 4 Another detailed view of the base plate 55 and the receiving plate 57 is the two representations of the Figure 4 refer to. Both representations show the Combination of base and link plate 55, 57 without the side plates 54 including the roller arrangement 52, 53 of the digging rope guide 50.
  • the two hydraulic actuating cylinders 80 which are fastened inside next to the guide rails 58, and on the piston side with the base plate 55 and on the cylinder side can be seen are bolted to the pivot plate 60.
  • the hydraulic actuating cylinders 80 are actuated by the central control unit of the cable excavator.
  • the shift movement of the digging cable guide 50 is controlled or regulated in such a way that a minimum deflection angle of the wound digging cable with respect to the digging cable winch 41 is maintained.
  • the wear of the digging cable 40 and the digging cable winch 41 can be reduced.
  • the movable design of the digging cable guide 50 allows the use of a digging cable winch 41 with LEBUS grooves, which means that multi-layer winding is also possible for the digging cable winch 41.
  • a control method for controlling the digging rope guide 50 can be explained. Correct positioning of the adjustment device 100 of the digging cable guide 50 can guarantee the maximum cable angle of the digging cable 40 on the digging cable winch 41. For this purpose, a direction-dependent movement of the digging cable winch 41 can be detected via a measuring device 110 on the digging cable winch 41. A control computer 120 can now use the known geometric data of the digging cable winch 41 to calculate the current position of the cable leaving the digging cable winch 41. The adjusting device 100 of the digging rope guide 50 can thus be set to the correct position.
  • the adjustment device 100 is positioned such that the deflection angle of the digging cable 40 on the digging cable winch 41 is as close as possible to zero degrees or that the maximum permissible deflection angle is not exceeded in any case.
  • the current position of the adjustment device 100 can be measured back using a further measuring device 130 and, if necessary, corrected.
  • the winch movement must be recorded so that the control computer 120 can calculate the current rope exit position.
  • the speed of the digging cable winch 41 and the direction of rotation of the digging cable winch 41 are recorded.
  • an incremental encoder (not shown here) or a speed measurement via proximity switches can be used as the measuring device.
  • a path measurement on the adjustment device 100 is used. This supplies the current position to the control computer.
  • an integrated cylinder travel measurement can be used.
  • the digging rope guide according to the invention can be made much shorter.
  • Digging rope winches 41 with special grooves can also advantageously be used.
  • the use of digging rope winches 41 with special grooves enables the use of the digging rope winch 41 with the digging rope guide 50 even in higher rope layers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Earth Drilling (AREA)
  • Jib Cranes (AREA)

Description

Die Erfindung betrifft eine Arbeitsmaschine, insbesondere einen Seilbagger, für den Schürfkübelbetrieb, mit einem über ein Hubseil aufgenommenen Schürfkübel, wobei der Kübel mittels wenigstens einem Grabseil zur Ausführung der Schürfbewegung einziehbar und eine Grabseilführung zur Führung des Grabseils an der Arbeitsmaschine angeordnet ist.The invention relates to a work machine, in particular a rope excavator, for scraper operation, with a scraper picked up via a hoist rope, the bucket being retractable by means of at least one digging rope to carry out the digging movement and a digging rope guide for guiding the digging rope being arranged on the working machine.

Die Erfindung bezieht sich auf den Schürfkübeleinsatz einer Arbeitsmaschine, insbesondere eines Seilbaggers. In der Fachliteratur wird zudem der Begriff "Schrappen" bzw. "Schrappeinsatz" verwendet. Arbeitsmaschine bzw. Seilbagger werden dazu mit einem sogenannten Schürfkübel oder auch Schleppschaufel als Arbeitsgerät ausgestattet. Der in der Regel muldenförmige Kübel wird mit zwei Seilen, nämlich dem Hubseil sowie dem Grabseil, mit der Maschine verbunden. Über das Hubseil wird der Schürfkübel möglichst weit von der Maschine ausgeworfen. Das Grabseil verläuft direkt vom Oberwagen der Arbeitsmaschine bzw. des Baggers zur Befestigungsstelle am Schürfkübel, wobei durch Einziehen des Grabseils eine Schürfbewegung des Kübels entlang der Erdoberfläche erreicht und das oberflächliche Erdmaterial durch die Kübelöffnung aufgenommen wird.The invention relates to the use of a scraper in a work machine, in particular a rope excavator. The term "scraping" or "scraping insert" is also used in the specialist literature. For this purpose, the work machine or rope excavator is equipped with a so-called scraper or dragline shovel as a working device. The generally trough-shaped bucket is connected to the machine with two ropes, namely the hoisting rope and the digging rope. The scraper is ejected as far from the machine as possible via the hoist rope. The digging rope runs directly from the superstructure of the work machine or the excavator to the attachment point on the scraper, whereby pulling the digging rope creates a digging movement of the bucket along the surface of the earth and the superficial soil material is picked up through the bucket opening.

Im Anschluss kann der Schürfkübel bei straffem Grabseil mit dem Hubseil angehoben und am Entleerungsort durch Nachlassen des Grabseils entleert werden.The scraper can then be lifted with the hoisting rope when the digging rope is taut and emptied at the emptying point by slackening the digging rope.

Bei bisherigen Maschinenkonstruktionen für den Schürfkübelbetrieb wurden Standardwinden mit Sonderrillung für das Grabseil eingesetzt. Dieses wird dabei über eine fest am Baggeroberwagen angebaute Grabseilführung auf die Grabseilwinde geführt.In previous machine designs for scraper operation, standard winches with special grooves were used for the digging rope. This is guided to the digging winch via a digging cable guide that is permanently attached to the excavator superstructure.

Um den maximal zulässigen Seilabgangswinkel des Grabseiles von der Winde einhalten zu können, muss die Grabseilführung einen Mindestabstand zur Winde aufweisen. Bei großen Winden bedeutet dies, dass die Grabseilführung sehr weit vor das Gerät herausragen muss. Eine gattungsgemäße Arbeitsmaschine nach dem Oberbegriff des Anspruchs 1 ist aus der US 1,572,228 bekannt.In order to be able to adhere to the maximum permissible angle of departure of the digging cable from the winch, the digging cable guide must have a minimum distance to the winch. In the case of large winds, this means that the digging rope guide must protrude very far in front of the device. A generic work machine according to the preamble of claim 1 is from U.S. 1,572,228 known.

Die Aufgabe der vorliegenden Erfindung besteht darin, eine Möglichkeit für eine verbesserte Grabseilführung aufzuzeigen, die einen verschleißärmeren Betrieb sowie eine höhere Flexibilität in Bezug auf die eingesetzte Grabseilwinde gestattet. Diese Aufgabe wird durch eine Arbeitsmaschine, insbesondere Seilbagger, gemäß den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der Arbeitsmaschine bzw. des Seilbaggers sind Gegenstand der abhängigen Ansprüche 2 bis 7.The object of the present invention is to show a possibility for an improved digging cable guide which allows less wear and tear and greater flexibility with regard to the digging cable winch used. This object is achieved by a work machine, in particular a rope excavator, according to the features of claim 1. Advantageous configurations of the work machine or the cable excavator are the subject matter of the dependent claims 2 to 7.

Erfindungsgemäß wird eine Arbeitsmaschine, insbesondere ein hydraulischer Seilbagger, für den Schürfkübelbetrieb vorgeschlagen, wobei die Arbeitsmaschine einen über das Hubseil aufgenommenen Schürfkübeleinsatz aufweist. Zudem umfasst die Arbeitsmaschine ein betätigbares Grabseil, das endseitig am Schürfkübeleinsatz befestigt ist. Durch Einziehen des Grabseils kann eine Schürfbewegung des Schürfkübeleinsatzes ausgeführt werden. Insbesondere verläuft das Grabseil vom Oberwagen der Arbeitsmaschine bzw. des Seilbaggers zum Schürfkübeleinsatz, während das Hubseil über die Auslegerspitze des Seilbaggers zum Schürfkübeleinsatz geführt ist.According to the invention, a work machine, in particular a hydraulic cable excavator, is proposed for scraper operation, the work machine having a scraper insert received via the hoist rope. In addition, the work machine includes an actuatable digging rope which is attached to the end of the scraper insert. By pulling in the digging rope, a scraping movement of the scraper insert can be carried out. In particular, the digging rope runs from the superstructure of the work machine or the rope excavator to the scraper bucket insert, while the hoisting rope is guided over the boom tip of the rope excavator to the scraper bucket insert.

Erfindungsgemäß ist eine Grabseilführung zur Führung des Grabseils im Bereich des Aufbaus der Arbeitsmaschine bzw. des Baggeraufbaus, insbesondere im Bereich des Baggeroberwagens, vorgesehen, die beweglich, insbesondere linear beweglich gestaltet ist, so dass die Führungsrichtung der Grabseilführung verstellbar ist. Die Grabseilführung ist insbesondere relativ zur Arbeitsmaschine linearbewegbar ausgeführt. Die Grabseilführung dient zur Regulierung des Ablenkwinkels des Grabseils auf einer Grabseilwinde. Durch die linearbewegliche Anordnung der Grabseilführung an der Arbeitsmaschine bzw. dem Seilbagger lässt sich der Ablenkwinkel des Grabseils auf der Grabseilwinde variieren, insbesondere kann der Ablenkwinkel so klein wie möglich gehalten werden. Durch die Minimierung des Ablenkwinkels lässt sich der Verschleiß von Grabseil und/oder Grabseilwinde reduzieren. Zudem ermöglicht die vorliegende Erfindung eine höhere Flexibilität in der Auswahl einer geeigneten Windenform bzw. Windenart sowie bezüglich der Positionierung der Grabseilwinde am Seilbagger.According to the invention, a digging rope guide is provided for guiding the digging rope in the area of the construction of the work machine or the excavator body, in particular in the area of the excavator superstructure, which is designed to be movable, in particular linearly movable, so that the guiding direction of the digging rope guide is adjustable. The digging rope guide is designed in particular to be linearly movable relative to the work machine. The digging rope guide is used to regulate the deflection angle of the digging rope on a digging winch. Due to the linearly movable arrangement of the digging rope guide on the work machine or the rope excavator, the deflection angle of the digging rope on the digging rope winch can be varied, in particular the deflection angle can be kept as small as possible. By minimizing the deflection angle, the wear of the digging rope and / or digging cable winch can be reduced. In addition, the present invention enables greater flexibility in the selection of a suitable form or type of winch and with regard to the positioning of the digging winch on the cable excavator.

Besonders bevorzugt wird eine Grabseilwinde mit LEBUS-Rillung verwendet, die für den Schürfkübelbetrieb eine Mehrlagenwicklung des Grabseiles erlaubt.A digging cable winch with LEBUS grooves is particularly preferred, which allows the digging cable to be wound in multiple layers for scraper operation.

In einer vorteilhaften Ausgestaltung ist die Grabseilführung quer zur Führungsrichtung, d.h. quer zum Seilverlauf des Grabseiles also in Horizontalrichtung bewegbar bzw. vershiftbar. Dadurch lässt sich die seitliche Führung des Grabseiles einfach regulieren, um den Ablenkwinkel des Grabseiles gegenüber der Grabseilwinde in einem tolerierbaren Bereich zu halten.In an advantageous embodiment, the digging cable guide can be moved or shifted transversely to the guide direction, i.e. transversely to the course of the digging cable, i.e. in the horizontal direction. As a result, the lateral guidance of the digging rope can be easily regulated in order to keep the deflection angle of the digging rope in relation to the digging cable winch within a tolerable range.

Erfindungsgemäß sind ein oder mehrere Antriebsmittel an oder im Bereich der Grabseilführung angeordnet , um eine automatische Linearbewegung bzw. ein automatisches Vershiften der Grabseilführung zu ermöglichen. Die Anordnung von ein oder mehreren Antriebsmittel ermöglicht zudem eine automatisierte Ansteuerung und/oder Regelung der Grabseilführung während des Schürfkübelbetriebs.According to the invention, one or more drive means are arranged on or in the area of the digging cable guide in order to enable an automatic linear movement or automatic shifting of the digging cable guide. The arrangement of one or more drive means also enables automated control and / or regulation of the digging rope guidance during the scraper operation.

Als Antriebsmittel kommen hydraulisch oder elektrisch betätigbare Stellglieder bzw. Stellzylinder in Frage. Für die Umsetzung des erfindungsgemäßen Gedankens ist jedoch jegliche Antriebsform zur automatischen Verstellung der Grabseilführung denkbar, solange die erforderlichen Kräfte zur Ausführung Verstellbewegung und/oder zur Positionshaltung der Grabseilführung aufgebracht werden können.Hydraulically or electrically actuated actuators or actuating cylinders can be used as the drive means. For the implementation of the inventive idea, however, any type of drive for the automatic adjustment of the digging rope guide is conceivable, as long as the forces required to carry out the adjustment movement and / or to maintain the position of the digging rope guide can be applied.

Gemäß der Erfindung sind Steuermittel zur Ansteuerung der ein oder mehreren Antriebsmittel vorgesehen. Über die Steuermittel wird die automatisierte Ansteuerung und/oder Regelung der Stellbewegung der Grabseilführung während des Schürfkübelbetriebes erreicht. Die Verstellbewegung der Grabseilführung wird in Abhängigkeit des erfassten Seilablenkwinkels des Grabseils in Bezug zur Grabseilwinde gesteuert bzw. geregelt. Der Seilablenkwinkel lässt sich beispielsweise durch eine geeignete Sensorik erfassen, wobei die Sensorik zur Messwertübertragung mittelbar oder unmittelbar mit dem Steuermittel kommunikativ in Verbindung steht.According to the invention, control means are provided for controlling the one or more drive means. The automated control and / or regulation of the adjusting movement of the digging rope guide during the scraper operation is achieved via the control means. The adjustment movement of the digging cable guide is controlled or regulated as a function of the detected cable deflection angle of the digging cable in relation to the digging cable winch. The cable deflection angle can be detected, for example, by a suitable sensor system, the sensor system being communicatively connected to the control means for the transmission of measured values, either indirectly or directly.

Das oder die Steuermittel umfassen vorzugsweise eine Steuerungslogik, die eine Ansteuerung der ein oder mehreren Antriebsmittel derart vornimmt, so dass ein Aufwickeln des Grabseiles mit einem im Toleranzbereich liegenden Ablenkwinkel erfolgt. Die Steuermittel sollen insbesondere den Schrägzug des Grabseiles auf die Grabseilwinde soweit wie möglich minimieren.The control means (s) preferably comprise a control logic which controls the one or more drive means in such a way that the digging rope is wound up with a deflection angle lying within the tolerance range. The control means should in particular minimize the diagonal pull of the digging cable on the digging cable winch as far as possible.

In einer vorteilhaften Ausgestaltung umfasst die Grabseilführung wenigstens eine obere und wenigstens eine untere Seilrolle. Die Drehachsen der Seilrollen liegen parallel zueinander. Die wenigstens zwei Seilrollen sind vorteilhafterweise übereinander angeordnet, das Grabseil verläuft durch den gebildeten Spalt zwischen beiden Seilrollen. Neben der erfindungsgemäßen linear beweglichen Anordnung des Rollenkopfes der Grabseilführung an der Arbeitsmaschine kann dieser zudem gegenüber der Arbeitsmaschine verschwenkbar angeordnet sein, insbesondere über einen Schwenkwinkel von 360°. In der Ausgangslage haben die Seilrollen horizontale Drehachsen.In an advantageous embodiment, the digging rope guide comprises at least one upper and at least one lower rope pulley. The axes of rotation of the pulleys are parallel to each other. The at least two pulleys are advantageously arranged one above the other, the digging rope runs through the gap formed between the two pulleys. In addition to the linearly movable arrangement according to the invention of the roller head of the digging rope guide on the work machine, it can also be arranged pivotably with respect to the work machine, in particular over a pivot angle of 360 °. In the starting position, the pulleys have horizontal axes of rotation.

Zusätzlich oder alternativ umfasst die Grabseilführung wenigstens zwei gegenüberliegende und parallel zueinander angeordnete Walzenkörper. Die Walzenkörper können drehbar oder feststehend an der Grabseilführung gelagert bzw. angeordnet sein. Idealerweise sind die wenigstens zwei gegenüberliegenden Walzenkörper am vorderen Seileingangsbereich der Grabseilführung angeordnet. Mit Hhilfe der in der Ausgangslage der Grabseilführung senkrecht stehenden Walzenkörper wird die seitliche Ablenkung des Grabseiles verhindert bzw. begrenzt. Die Drehachsen der Walzenkörper verlaufen senkrecht zu den Drehachsen der Seilrollen. In der bevorzugten Ausführungsform verläuft das Grabseil zwischen dem gebildeten Spalt der gegenüberliegenden Walzenkörper zu den nachfolgend angeordneten Seilrollen.Additionally or alternatively, the digging rope guide comprises at least two opposite roller bodies arranged parallel to one another. The roller bodies can be mounted or arranged in a rotatable or stationary manner on the digging rope guide. Ideally, the at least two opposite roller bodies are arranged at the front rope entry area of the digging rope guide. The lateral deflection of the digging rope is prevented or limited with the aid of the roller bodies, which are vertical in the starting position of the digging cable guide. The axes of rotation of the roller bodies run perpendicular to the axes of rotation of the rope pulleys. In the preferred embodiment, the digging rope runs between the gap formed between the opposing roller bodies and the subsequently arranged rope pulleys.

Die vorliegende Erfindung betrifft neben der Arbeitsmaschine bzw. dem Seilbagger eine Grabseilführung für eine Arbeitsmaschine bzw. Seilbagger gemäß der vorliegenden Erfindung bzw. einer vorteilhaften Ausgestaltung der vorliegenden Erfindung. Die Grabseilführung weist demnach dieselben Vorteile und Eigenschaften wie die erfindungsgemäße Arbeitsmaschine auf, weshalb an dieser Stelle auf eine wiederholende Beschreibung verzichtet wird.In addition to the work machine or the cable excavator, the present invention relates to a digging cable guide for a work machine or cable excavator according to the present invention or an advantageous embodiment of the present invention. The digging rope guide accordingly has the same advantages and properties as the work machine according to the invention, which is why a repetitive description is dispensed with at this point.

In einer bevorzugten Ausführung ist die Grabseilführung lösbar mit der Arbeitsmaschine bzw. dem Seilbagger, insbesondere mit dem Oberwagen des Seilbaggers verbindbar ausgeführt. Denkbar ist die Anordnung am Anlenkstück des Oberwagens.In a preferred embodiment, the digging cable guide is designed so that it can be detachably connected to the work machine or the cable excavator, in particular to the superstructure of the cable excavator. The arrangement on the articulation piece of the superstructure is conceivable.

Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung kann durch das richtige Positionieren der Verstelleinrichtung der maximale Seilwinkel des Grabseiles auf die Winde garantiert werden. Hierzu kann über eine Messeinrichtung auf der Winde eine richtungsabhängige Bewegung der Winde erkannt werden. Ein Steuerrechner kann nun mit Hilfe der bekannten geometrischen Daten der Winde die aktuelle Seilabgangsposition über der Winde berechnen. Damit kann die Verstelleinrichtung der Grabseilführung auf die richtige Position eingestellt werden. Die Verstelleinrichtung wird so positioniert, dass der Ablenkwinkel des Seiles auf der Winde möglichst null Grad beträgt bzw. dass der maximal zulässige Ablenkwinkel auf jeden Fall nicht überschritten wird. Die aktuelle Position der Verstelleinrichtung kann über eine weitere Messeinrichtung zurückgemessen und gegebenenfalls korrigiert werden.According to a further preferred embodiment of the invention, the correct positioning of the adjusting device can guarantee the maximum rope angle of the digging rope on the winch. For this purpose, a direction-dependent movement of the winch can be detected via a measuring device on the winch. A control computer can now use the known geometric data of the winch to calculate the current rope departure position above the winch. This allows the adjustment device of the digging rope guide to be set to the correct position. The adjustment device is positioned so that the deflection angle of the rope on the winch is as close as possible to zero degrees or that the maximum permissible deflection angle is is not exceeded in any case. The current position of the adjustment device can be measured back using a further measuring device and, if necessary, corrected.

Weitere Vorteile und Eigenschaften der Erfindung werden im Folgenden anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:

Figur 1:
eine Seitenansicht des erfindungsgemäßen Seilbaggers während des Schürfkübelbetriebs,
Figur 2:
eine Schnittdarstellung durch die erfindungsgemäße Grabseilführung,
Figur 3:
eine perspektivische Detailansicht der erfindungsgemäßen Grabseilführung,
Figur 4:
zwei Detailansichten des erfindungsgemäßen Antriebsmechanismus der Grabseilführung und
Fugur 5:
eine schematische Darstellung einer Grabseilführung.
Further advantages and properties of the invention are explained in more detail below with reference to an exemplary embodiment shown in the drawings. Show it:
Figure 1:
a side view of the rope excavator according to the invention during the scraper operation,
Figure 2:
a sectional view through the digging rope guide according to the invention,
Figure 3:
a perspective detailed view of the digging rope guide according to the invention,
Figure 4:
two detailed views of the drive mechanism according to the invention of the digging rope guide and
Fugure 5:
a schematic representation of a digging rope guide.

Figur 1 zeigt eine Seitenansicht des erfindungsgemäßen Seilbaggers für den Schürfkübelbetrieb. Die Erfindung wird im Folgend anhand eines Seilbaggers erläutert Die verwendete Grabseilführung lässt sich jedoch grundsätzlich für jede Arbeitsmaschine als Arbeitsgerät einsetzen, solange die notwendigen Voraussetzungen der Arbeitsmaschine, beispielsweise ein Hubseil, gegeben sind. Figure 1 shows a side view of the dragline excavator according to the invention for the scraper operation. The invention is explained below with the aid of a rope excavator. The digging rope guide used can, however, in principle be used as a working device for any work machine, as long as the necessary requirements of the work machine, for example a hoist rope, are given.

Der gezeigte Seilbagger 10 ist als Raupenbagger ausgeführt. Das Hubseil 20 ist ausgehend vom Oberwagen des Raupenbaggers 10 über den Gittermastausleger und den an der Spitze angeordneten Rollenkopf bis zum Schürfkübel 30 geführt. Über das Hubseil 20 kann der Schürfkübel 30 angehoben und mit möglichst großem Abstand zum Oberwagen ausgeworfen werden. Die Betätigung des Hubseils 20 erfolgt mittels der Hubseilwinde 21.The rope excavator 10 shown is designed as a crawler excavator. The hoist rope 20, starting from the superstructure of the crawler excavator 10, is guided over the lattice boom and the roller head arranged at the tip to the scraper 30. The scraper 30 can be raised via the hoist rope 20 and with the largest possible Distance to the superstructure. The hoisting rope 20 is actuated by means of the hoisting rope winch 21.

Der Schürfkübel 30 steht zudem mit dem Grabseil 40 des Seilbaggers 10 in Verbindung, dass durch eine am Oberwagen angeordnete Grabseilwinde 41 auf- und abwickelbar ist. Die Einziehbewegung des Grabseiles 40 führt zu einer Grabbewegung des Schürfkübels 30. Der dargestellte Schürfkübel 30 ist muldenförmig geformt und schürft beim Einziehen des Grabseiles 40 entlang seiner Auflagefläche mit der Kübelöffnung voraus über die Erdoberfläche, sodass der Innenraum des Kübels 30 mit dem aufzunehmenden Erdmaterial befüllt wird.The scraper 30 is also connected to the digging cable 40 of the rope excavator 10, which can be wound up and unwound by a digging cable winch 41 arranged on the superstructure. The pulling-in movement of the digging rope 40 leads to a digging movement of the scraper 30. The scraper 30 shown is trough-shaped and digs when pulling the digging rope 40 along its contact surface with the bucket opening first over the surface of the earth, so that the interior of the bucket 30 is filled with the earth to be picked up .

Am Anlenkstück 60 des Baggeroberwagens ist eine Grabseilführung 50 angeordnet, durch die das Grabseil 40 ausgehend vom Kübel 30 bis hin zur Grabseilwinde 41 geführt wird.A digging cable guide 50, through which the digging cable 40 is guided starting from the bucket 30 as far as the digging cable winch 41, is arranged on the articulation piece 60 of the excavator superstructure.

Eine Schnittansicht der erfindungsgemäßen Grabseilführung 50 entlang einer vertikalen Schnittebene ist der Figur 2 zu entnehmen. Zu erkennen sind die beiden übereinander angeordneten Seilführungsrollen 52, die im angrenzenden Bereich einen Spalt bilden, durch den das Grabseil 40 geführt ist. Die Drehachsen der beiden Seilrollen 52 sind parallel zueinander angeordnet und liegen beide in der Horizontalebene. Die Drehrichtung der Seilrollen ist gegensinnig.A sectional view of the digging rope guide 50 according to the invention along a vertical sectional plane is shown in FIG Figure 2 refer to. The two rope guide rollers 52 arranged one above the other can be seen, which form a gap in the adjoining area through which the digging rope 40 is guided. The axes of rotation of the two rope pulleys 52 are arranged parallel to one another and both lie in the horizontal plane. The direction of rotation of the pulleys is opposite.

Am Eingang der Grabseilführung sind zwei gegenüberliegende Walzen 53 vorgesehen, die den seitlichen Ablenkwinkel des Grabseils 40 in der horizontalen Ebene begrenzen. Die Walzen 53 weisen parallel zueinander angeordnete vertikale Drehachsen auf, wobei in Figur 2 aufgrund der Schnittdarstellung nur eine der beiden Walzen 53 zu erkennen ist.At the entrance of the digging cable guide, two opposing rollers 53 are provided which limit the lateral deflection angle of the digging cable 40 in the horizontal plane. The rollers 53 have vertical axes of rotation arranged parallel to one another, with FIG Figure 2 only one of the two rollers 53 can be seen on the basis of the sectional view.

Die gesamte Grabseilführung ist am Anlenkstück 60 des Oberwagens befestigt. Am rechten Bildrand ist die Grabseilwinde 41 zu erkennen, auf die das Grabseil 40 aufgewickelt wird. Die Grabseilwinde 41 weist eine sogenannte LEBUS-Rillung auf, die im Grabseilbetrieb eine Mehrfachwicklung des Grabseils 40 ermöglicht.The entire digging rope guide is attached to the pivot piece 60 of the superstructure. On the right edge of the picture, the digging cable winch 41 can be seen, onto which the digging cable 40 is wound. The digging cable winch 41 has a so-called LEBUS grooving, which enables the digging cable 40 to be wound multiple times when the digging cable is in operation.

Die gegenüber dem Seilbagger bzw. dem Anlenkstück 60 bewegbare bzw. verstellbare Anordnung der Grabseilführung 50 lässt sich anhand der perspektivischen Darstellung der Figur 3 erklären. Die Seilrollen 52 der Grabseilführung 50 werden zwischen den beiden Seitenplatten 54 aufgenommen, an deren vorderster Stelle jeweils eine der vorbeschriebenen Walzen 53 drehbar eingespannt ist.The displaceable or adjustable arrangement of the digging rope guide 50 with respect to the rope excavator or the articulation piece 60 can be seen on the basis of the perspective illustration in FIG Figure 3 explain. The rope pulleys 52 of the digging rope guide 50 are received between the two side plates 54, at the foremost point of which one of the above-described rollers 53 is rotatably clamped.

Beide Seitenplatten 54 sind auf der dem Anlenkstück 60 zugewandten Seite verjüngt ausgeführt, um durch die rohrförmige Aufnahme 56 der Grundplatte 55 aufgenommen zu werden. Die Grundplatte 55 der Grabseilführung 50 ist zudem über zwei Führungsschienen 58 der Anlenkplatte 57 relativ verschieblich zu dieser gelagert. Mittels der Führungsschienen 58 lässt sich die Grundplatte 55 in Horizontalrichtung gegenüber dem Anlenkstück 60 verschieben. Die Anlenkplatte 57 ist über die Verbolzstellen 61 mit dem Anlenkstück lösbar verbolzt, so dass bei regulärem Seilbaggerbetrieb die Grabseilführung 50 entfernt oder ein bestehender Seilbagger mit passendem Anlenkstück einfach nachgerüstet werden könnte.Both side plates 54 are tapered on the side facing the pivot piece 60 in order to be received by the tubular receptacle 56 of the base plate 55. The base plate 55 of the digging rope guide 50 is also supported by two guide rails 58 of the articulation plate 57 so that it can be moved relative to the latter. By means of the guide rails 58, the base plate 55 can be displaced in the horizontal direction with respect to the pivot piece 60. The articulation plate 57 is releasably bolted to the articulation piece via the bolting points 61, so that the digging cable guide 50 can be removed during regular rope excavator operation or an existing rope excavator can simply be retrofitted with a suitable articulation piece.

Die Verschiebung wird durch zwei hydraulische lösbar Stellzylinder 80 bewerkstelligt, die zylinderseitig mit der Anlenkplatte 60 und kolbenseitig mit der Grundplatte verbunden sind. Beide Zylinder 80 liegen parallel zu jeweils einer Führungsschiene 58. In der Mittelstellung des Kolbens liegt die Führungsachse der Grabseilführung 50 fluchtend mit der Mittelachse des Anlenkstückes 60. Durch eine Aus- bzw. Einfahrbewegung kann die Grabseilführung 50 gegenüber der Mittelachse des Anlenkstückes 60 in Horizontalrichtung nach rechts oder links vershiftet werden.The displacement is brought about by two hydraulic, detachable actuating cylinders 80 which are connected on the cylinder side to the articulation plate 60 and on the piston side to the base plate. Both cylinders 80 are parallel to a respective guide rail 58. In the central position of the piston, the guide axis of the digging rope guide 50 is aligned with the central axis of the pivot piece 60. By means of an extension or retraction movement, the digging rope guide 50 can move horizontally with respect to the central axis of the pivot piece 60 be shifted to the right or left.

Zusätzlich lässt sich die Grabseilführung 50 gegenüber dem Seilbagger 10 bzw. der Aufnahme 56 verschwenken. Der aus Seitenplatten 54, Rollen 52 und Walzen 53 gebildete Rollenkopf der Grabseilführung 50 lässt sich beispielsweise um einen Schwenkwinkel von 360° verschwenken.In addition, the digging cable guide 50 can be pivoted relative to the cable excavator 10 or the receptacle 56. The roller head of the digging rope guide 50, formed from side plates 54, rollers 52 and rollers 53, can be pivoted, for example, through a pivot angle of 360 °.

Eine weitere Detailansicht der Grundplatte 55 sowie der Aufnahmeplatte 57 ist den beiden Darstellungen der Figur 4 zu entnehmen. Beide Darstellungen zeigen die Kombination aus Grund- und Anlenkplatte 55, 57 ohne die aufgenommenen Seitenplatten 54 inklusive der Rollenanordnung 52, 53 der Grabseilführung 50. Zu erkennen sind die beiden hydraulischen Stellzylinder 80, die innen neben den Führungsschienen 58 befestigt sind, und kolbenseitig mit der Grundplatte 55 und zylinderseitig mit der Anlenkplatte 60 verbolzt sind.Another detailed view of the base plate 55 and the receiving plate 57 is the two representations of the Figure 4 refer to. Both representations show the Combination of base and link plate 55, 57 without the side plates 54 including the roller arrangement 52, 53 of the digging rope guide 50. The two hydraulic actuating cylinders 80, which are fastened inside next to the guide rails 58, and on the piston side with the base plate 55 and on the cylinder side can be seen are bolted to the pivot plate 60.

Die Betätigung der hydraulischen Stellzylinder 80 erfolgt durch die zentrale Steuereinheit des Seilbaggers. Die Shiftbewegung der Grabseilführung 50 wird dabei derart gesteuert bzw. geregelt, sodass ein minimaler Ablenkwinkel des aufgewickelten Grabseils gegenüber der Grabseilwinde 41 eingehalten wird. Dadurch lässt sich der Verschleiß des Grabseiles 40 sowie der Grabseilwinde 41 reduzieren. Zudem erlaubt die bewegliche Ausgestaltung der Grabseilführung 50 den Einsatz einer Grabseilwinde 41 mit LEBUS-Rillung, wodurch auch für die Grabseilwinde 41 eine Mehrlagenwicklung möglich ist.The hydraulic actuating cylinders 80 are actuated by the central control unit of the cable excavator. The shift movement of the digging cable guide 50 is controlled or regulated in such a way that a minimum deflection angle of the wound digging cable with respect to the digging cable winch 41 is maintained. As a result, the wear of the digging cable 40 and the digging cable winch 41 can be reduced. In addition, the movable design of the digging cable guide 50 allows the use of a digging cable winch 41 with LEBUS grooves, which means that multi-layer winding is also possible for the digging cable winch 41.

Ahand der schematischen Darstellung in Figur 5 kann ein Ansteuerverfahren zur Ansteuerung der Grabseilführung 50 erläutert werden. Durch das richtige Positionieren der Verstelleinrichtung 100 der Grabseilführung 50 kann der maximale Seilwinkel des Grabseiles 40 auf die Grabseilwinde 41 garantiert werden. Hierzu kann über eine Messeinrichtung 110 auf der Grabseilwinde 41 eine richtungsabhängige Bewegung der Grabseilwinde 41 erkannt werden. Ein Steuerrechner 120 kann nun mit Hilfe der bekannten geometrischen Daten der Grabseilwinde 41 die aktuelle Seilabgangsposition von der Grabseilwinde 41 berechnen. Damit kann die Verstelleinrichtung 100 der Grabseilführung 50 auf die richtige Position eingestellt werden. Die Verstelleinrichtung 100 wird so positioniert, dass der Ablenkwinkel des Grabseiles 40 auf der Grabseilwinde 41 möglichst null Grad beträgt bzw. dass der maximal zulässige Ablenkwinkel auf jeden Fall nicht überschritten wird. Die aktuelle Position der Verstelleinrichtung 100 kann über eine weitere Messeinrichtung 130 zurückgemessen und gegebenenfalls korrigiert werden.Based on the schematic representation in Figure 5 a control method for controlling the digging rope guide 50 can be explained. Correct positioning of the adjustment device 100 of the digging cable guide 50 can guarantee the maximum cable angle of the digging cable 40 on the digging cable winch 41. For this purpose, a direction-dependent movement of the digging cable winch 41 can be detected via a measuring device 110 on the digging cable winch 41. A control computer 120 can now use the known geometric data of the digging cable winch 41 to calculate the current position of the cable leaving the digging cable winch 41. The adjusting device 100 of the digging rope guide 50 can thus be set to the correct position. The adjustment device 100 is positioned such that the deflection angle of the digging cable 40 on the digging cable winch 41 is as close as possible to zero degrees or that the maximum permissible deflection angle is not exceeded in any case. The current position of the adjustment device 100 can be measured back using a further measuring device 130 and, if necessary, corrected.

Damit der Steuerrechner 120 die aktuelle Seilabgangsposition berechnen kann, muss die Windenbewegung erfasst werden. Durch die Messeinrichtung werden die Geschwindigkeit der Grabseilwinde 41 sowie die Drehrichtung der Grabseilwinde 41 erfasst. Als Messeinrichtung kann beispielsweise ein hier nicht näher dargestellter Inkrementalgeber oder eine Drehzahlmessung über Näherungsschalter verwendet werden.The winch movement must be recorded so that the control computer 120 can calculate the current rope exit position. The The speed of the digging cable winch 41 and the direction of rotation of the digging cable winch 41 are recorded. For example, an incremental encoder (not shown here) or a speed measurement via proximity switches can be used as the measuring device.

Für eine Rückmessung der aktuellen Position der Verstelleinrichtung 100 wird eine Wegmessung auf der Verstelleinrichtung 100 verwendet. Diese liefert die aktuelle Position an den Steuerrechner. Zum Beispiel kann bei einer Verstellung über einen Zylinder 80 eine integrierte Zylinderwegmessung verwendet werden.For a back measurement of the current position of the adjustment device 100, a path measurement on the adjustment device 100 is used. This supplies the current position to the control computer. For example, when adjusting via a cylinder 80, an integrated cylinder travel measurement can be used.

Die erfindungsgemäße Grabseilführung kann wesentlich kürzer ausgeführt werden. Vorteilhaft können auch Grabseilwinden 41 mit Sonderrillung zum Einsatz kommen.Der Einsatz von Grabseilwinden 41 mit Sonderrillung ermöglicht den Einsatz der Grabseilwinde 41 mit der Grabseilführung 50 auch in höheren Seillagen.The digging rope guide according to the invention can be made much shorter. Digging rope winches 41 with special grooves can also advantageously be used. The use of digging rope winches 41 with special grooves enables the use of the digging rope winch 41 with the digging rope guide 50 even in higher rope layers.

Claims (7)

  1. Work machine, in particular a cable-operated excavator (10), for dragline bucket operation, comprising a dragline bucket (30) taken up by a hoist rope (20), wherein the dragline bucket (30) can be retracted by means of at least one excavator rope (40) for carrying out the dragging movement and a dragline guide (50) for guiding the dragline is arranged at the work machine (40), wherein the dragline guide (50) is configured as movable, in particular as linearly movable, characterized in that
    one or more drive means (80) for generating a linear movement of the dragline guide (50) are provided and in that that control means (120) are provided for controlling the one or more drive means (80), wherein the control takes account of the retraction angle of the dragline (40) on the dragline winch (41).
  2. Work machine in accordance with claim 1, characterized in that the dragline guide (41) is movable transversely to the dragline pulling direction, in particular in the horizontal direction.
  3. Work machine in accordance with one of the preceding claims, characterized in that the dragline (40) can be retracted by means of at least one dragline winch (41) having LEBUS grooving.
  4. Work machine in accordance with claim 1, characterized in that one or more drive means comprise a hydraulic cylinder (80).
  5. Work machine in accordance with claim 1, characterized in that the control means (120) are configured such that the oblique pull of the dragline (40) on the dragline winch (41) is minimized by the control of the one or more control means.
  6. Work machine in accordance with one of the preceding claims, characterized in that the dragline guide (50) comprises at least one upper and at least one lower rope pulley (52) each having a horizontal axis of rotation.
  7. Work machine in accordance with one of the preceding claims, characterized in that the dragline guide (50) comprises at least two oppositely disposed roller bodies (53) which are preferably supported rotatably at the dragline guide (50) with a vertical axis of rotation.
EP14196941.0A 2013-12-27 2014-12-09 Working machine for the operation of a dig bucket Active EP2889431B1 (en)

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CN108589818A (en) * 2018-05-09 2018-09-28 广州文冲船厂有限责任公司 Dredger drag head ground pressure control system
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CA2875704C (en) 2021-08-10
US10113295B2 (en) 2018-10-30
CA2875704A1 (en) 2015-06-27
DE102013022108A1 (en) 2015-07-02
EP2889431A2 (en) 2015-07-01
US20150184357A1 (en) 2015-07-02
AU2014280935A1 (en) 2015-07-16
EP2889431A3 (en) 2015-10-07

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