EP0707678A1 - Hydraulically pivotable ditcher shovel - Google Patents

Hydraulically pivotable ditcher shovel

Info

Publication number
EP0707678A1
EP0707678A1 EP95907612A EP95907612A EP0707678A1 EP 0707678 A1 EP0707678 A1 EP 0707678A1 EP 95907612 A EP95907612 A EP 95907612A EP 95907612 A EP95907612 A EP 95907612A EP 0707678 A1 EP0707678 A1 EP 0707678A1
Authority
EP
European Patent Office
Prior art keywords
piston
coupling rod
hydraulically
rod
articulated
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.)
Granted
Application number
EP95907612A
Other languages
German (de)
French (fr)
Other versions
EP0707678B1 (en
Inventor
Rolf Mieger
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0707678A1 publication Critical patent/EP0707678A1/en
Application granted granted Critical
Publication of EP0707678B1 publication Critical patent/EP0707678B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3677—Devices to connect tools to arms, booms or the like allowing movement, e.g. rotation or translation, of the tool around or along another axis as the movement implied by the boom or arms, e.g. for tilting buckets

Definitions

  • the invention relates to a hydraulically pivotable trench clearing bucket according to the preamble of claim 1 or the preamble of claim 5.
  • Such a trench clearing bucket is already known from DE 32 45 673 C.
  • a lever is used there, which consists of a coupling rod, one end of which on the support piece at a distance from the pivot axis of the spoon and the other end of which is displaceably guided in the carrier and by the piston-cylinder Unit movable slider is articulated.
  • a slider in the carrier designed as a tube according to DE 32 45 673 is comparatively complex.
  • sliding surfaces have to be produced in a welded construction, which requires high manufacturing accuracy and low tolerances.
  • the object of the invention is to further develop a pivotable trench clearing bucket of the generic type in such a way that it is constructed more simply and can therefore be manufactured more easily and more cost-effectively.
  • the first solution to the aforementioned problem is that the coupling rod is articulated directly on the piston and that at least one guide roller is mounted on the piston in the articulation point of the coupling rod.
  • the advantages of the solution according to the invention lie in the considerably more favorable overall width, the better introduction of force, since no moments act on the guide, the better efficiency which is achieved by the rolling friction instead of the sliding friction, and the cheaper production, which results from the fact that no more sliding surfaces are required for a slide. Due to the smaller space requirement, an optimal torque distribution is possible and a comparatively larger cylinder can be used at all.
  • the piston can be mounted on one side in a differential cylinder and can be connected with its free end to the coupling rod.
  • a second cylinder can be provided.
  • plunger cylinders has the advantage that the same forces are generated in both directions.
  • the coupling point on the piston rod can be guided by the cylinder tion are taken over and thereby completely saved.
  • the use of the plunger cylinders according to the invention leads to a further reduction in the cost of manufacture compared to the use of differential cylinders.
  • the plunger cylinder acts only in one direction, so that a pin bearing can be dispensed with when using two plunger cylinders.
  • the use of plunger cylinders has the advantage that a simple exchange of the volumes is possible, which enables a floating position by connecting the lines. Such a floating position of the spoon is useful and necessary for a number of tasks.
  • 1 is a side view of a trench clearing bucket
  • Fig. 2 a partially sectioned front view of a
  • Trench clearing bucket according to a first embodiment
  • Fig. 3 a partially sectioned front view of a second embodiment of a trench clearing bucket
  • FIG. 4 shows a partially sectioned front view of a trench clearing bucket of a third embodiment of the invention
  • Fig. 5 a partially sectioned front view of a
  • Trench clearing bucket according to a fourth embodiment of the present invention
  • a trench clearing bucket 10 as shown in FIG. 1, is pivotally mounted about a pivot axis 12 on a support piece 14, which is articulated in a manner known per se on the dipper stick of a hydraulic excavator or the like and can be pivoted by the hydraulic cylinder of the bucket is.
  • the trench clearing bucket is stiffened at its upper end by a support 16 consisting of a tube, to which lateral triangular tabs 18, 20 are fastened, which serve to support the trench clearing bucket 10 on the support piece 14.
  • the tubular support 16 is shown in the exemplary embodiment according to FIG. 1 with a circular cross section. Here, however, a tube with a square cross section or any box can also serve as a carrier 16.
  • a differential cylinder 22 is fastened in the tubular carrier 16 near one end, the one-sided piston rod 24 of which is connected to a coupling rod 28 via a bolt 26.
  • the coupling rod 28 engages off-center on the support piece 14.
  • the piston rod exits the carrier through a slot-like opening 30 within the carrier 16.
  • Guide rollers 32, 34 are mounted laterally on the bolt 26 and their circumference, as can be seen in particular in FIG. 2a, is adapted to the tube cross section of the carrier 16. According to this construction, the articulation point between the piston rod 24, which is designed in the form of a fork in the region of the articulation, and the coupling rod 28 coincide with the axis of the guide rollers 32 and 34.
  • the trench clearing bucket 10 can then be pivoted about the pivot axis 12 by displacing the piston rod 24 within the differential cylinder 22.
  • FIGS. 3, 3a essentially corresponds to that according to FIG. 2.
  • the piston rod 24 is likewise mounted in a differential cylinder 22 and the free end of the piston rod 24 is split in a fork shape, as shown in FIG. 3a.
  • the forked end of the piston rod 24 is extended beyond the articulation point at which the coupling rod 28 engages.
  • an end of a piston 38 of a further piston-cylinder arrangement 38, 40 is in turn articulated about a bolt 36.
  • the construction according to FIG. 3 is wider than that according to FIG. 2, but can transmit comparatively larger moments.
  • two plunger cylinders 42 and 44 are arranged within the carrier 14.
  • a bolt 26 is also provided here, to which a free end of the coupling rod 28 is articulated.
  • Guide rollers 32 and 34 are also seated on the pin 26.
  • the plunger cylinders 42 and 44 are not firmly bolted to the support 16, but are supported on corresponding pins 48 and 50 running transversely through the support.
  • the embodiment according to FIG. 5 largely corresponds to that according to FIG. 4.
  • a comparatively narrower overall width of the trench clearing bucket 10 is realized.
  • the difference to the embodiment according to FIG. 4 is that here the piston rod is guided only via the plunger cylinders 42 and 44.
  • the additional guide rollers 32 and 34 have been dispensed with in this embodiment.
  • the piston rod 46 is also divided here in the articulation area of the coupling rod 28, as is indicated by the dashed lines in FIG. 5.
  • the coupling rod 46 is not divided into two. Rather, an extension 52 is connected to the coupling rod 46, one end of the essentially triangular extension 52 protruding from the carrier 16 through the slot 30. A cover plate 54 for covering the Slot be welded. At the end protruding from the carrier 16, the free end of the coupling rod 28 is seated on the attachment 52, which can also be made in two parts. This is articulated there via a bolt 26 '.
  • FIG. 7 shows an embodiment which largely corresponds to that according to FIG. 6. Only the coupling rod 28 is dispensed with here. Instead, a longitudinal slot 56 is arranged in the attachment 52, which is penetrated by a bolt 58 fixed to the support piece. As shown in FIGS. 7, 7a, the bolt 58 and the slot guide 56 lie below the pivot point 12. In this construction, the coupling rod, which is realized in the other construction versions, can be dispensed with.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Crushing And Grinding (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Joints Allowing Movement (AREA)
  • Fluid-Damping Devices (AREA)
  • Shovels (AREA)
  • Actuator (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

PCT No. PCT/EP95/00272 Sec. 371 Date May 16, 1996 Sec. 102(e) Date May 16, 1996 PCT Filed Jan. 25, 1995 PCT Pub. No. WO95/31610 PCT Pub. Date Nov. 23, 1995The invention relates to a hydraulically swung trenching shovel comprising a mounting part pivoted to the front end of an excavator shovel beam, on which mounting part the shovel may be pivoted by a hydraulic piston and cylinder unit around a pivot axis extending in the working direction, the piston and cylinder unit being arranged in a manner parallel to a cutting edge of the shovel in a carrying member provided in the upper edge region thereof and the mounting part is connected with a lever comprising a coupling rod for pivoting the shovel, said piston and cylinder unit being adapted to act on said lever. In accordance with the invention the coupling rod is directly pivotally connected on the piston and at the pivot point of the piston rod on the piston at least one rotary guide runner is rotatably mounted.

Description

Hydraulisch schwenkbarer Grabenräumlöffel Hydraulically swiveling trench clearing bucket
Die Erfindung betrifft einen hydraulisch schwenkbaren Grabenräum¬ löffel nach dem Oberbegriff des Anspruchs 1 oder dem Oberbegriff des Anspruchs 5.The invention relates to a hydraulically pivotable trench clearing bucket according to the preamble of claim 1 or the preamble of claim 5.
Ein derartiger Grabenräumlöffel ist bereits aus der DE 32 45 673 C bekannt. Zur Verschwenkung des Löffels dient dort ein Hebel, der aus einer Koppelstange besteht, deren eines Ende an dem Trag¬ stück im Abstand von der Schwenkachse des Löffels un deren ande¬ res Ende an einem in dem Träger verschieblich geführten und von der Kolben-Zylinder-Einheit bewegbaren Gleitstück angelenkt ist. Ein derartiges Gleitstück in dem gemäß der DE 32 45 673 als Rohr ausgeführten Träger vorzusehen ist vergleichsweise aufwendig. Hier müssen bei einer Schweißkonstruktion Gleitflächen gefertigt werden, was eine hohe Fertigungsgenauigkeit und geringe Toleran¬ zen bedingt.Such a trench clearing bucket is already known from DE 32 45 673 C. For pivoting the spoon, a lever is used there, which consists of a coupling rod, one end of which on the support piece at a distance from the pivot axis of the spoon and the other end of which is displaceably guided in the carrier and by the piston-cylinder Unit movable slider is articulated. To provide such a slider in the carrier designed as a tube according to DE 32 45 673 is comparatively complex. Here, sliding surfaces have to be produced in a welded construction, which requires high manufacturing accuracy and low tolerances.
Aufgabe der Erfindung ist es, einen gattungsgemäßen schwenkbaren Grabenräumlöffel derart weiterzubilden, daß er einfacher aufge¬ baut ist und sich daher einfacher und kostengünstiger herstellen läßt. Ausgehend von einem gattungsgemäßen hydraulisch schwenkbaren Gra¬ benräumlöffel besteht die erste Lösung der vorgenannten Aufgabe darin, daß die Koppelstange unmittelbar am Kolben angelenkt ist und daß im Anlenkpunkt der Koppelstange am Kolben mindestens eine Führungsrolle gelagert ist. Gegenüber dem gattungsgemäßen hydraulisch schwenkbaren Grabenräumlöffel liegen die Vorteile der erfinungsgemäßen Lösung in der wesentlich günstigeren Bau¬ breite, der besseren Krafteinleitung, da keine Momente auf die Führung wirken, dem besseren Wirkungsgrad, der durch die Rollrei¬ bung anstelle der Gleitreibung erreicht wird, und der billigeren Fertigung, die daraus resultiert, daß hier keine Gleitflächen mehr für ein Gleitstück notwendig sind. Durch den geringeren Platzbedarf ist eine optimale Momentverteilung möglich und es kann überhaupt ein vergleichsweise größerer Zylinder eingesetzt werden.The object of the invention is to further develop a pivotable trench clearing bucket of the generic type in such a way that it is constructed more simply and can therefore be manufactured more easily and more cost-effectively. Proceeding from a generic hydraulically swiveling grave clearing bucket, the first solution to the aforementioned problem is that the coupling rod is articulated directly on the piston and that at least one guide roller is mounted on the piston in the articulation point of the coupling rod. Compared to the hydraulic swiveling ditch cleaning bucket of the generic type, the advantages of the solution according to the invention lie in the considerably more favorable overall width, the better introduction of force, since no moments act on the guide, the better efficiency which is achieved by the rolling friction instead of the sliding friction, and the cheaper production, which results from the fact that no more sliding surfaces are required for a slide. Due to the smaller space requirement, an optimal torque distribution is possible and a comparatively larger cylinder can be used at all.
Bevorzugte Ausgestaltungen der erfindungsgemäßen Lehre ergeben sich aus den Unteransprüchen 2-4. Demnach kann der Kolben einsei¬ tig in einem Differentialzylinder gelagert sein und mit seinem freien Ende mit der Koppelstange verbunden sein. Gemäß einer al¬ ternativen Ausführungsform zur Übertragung großer Momente kann ein zweiter Zylinder vorgesehen sein.Preferred embodiments of the teaching according to the invention result from subclaims 2-4. Accordingly, the piston can be mounted on one side in a differential cylinder and can be connected with its free end to the coupling rod. According to an alternative embodiment for transmitting large moments, a second cylinder can be provided.
Eine weitere Lösung der zuvor formulierten Aufgabe besteht da¬ rin, daß bei einem gattungsgemäßen hydraulisch schwenkbaren Gra¬ benräumlöffel in dem Träger zwei Plunger-Zylinder sich gegenüber angeordnet sind, in die jeweils die Enden einer gemeinsamen Kol¬ benstange eintauchen. Auch hier ist die Koppelstange unmittelbar am Kolben angelenkt.Another solution to the previously formulated task consists in that, in the case of a hydraulically pivotable trench clearing spoon of the generic type, two plunger cylinders are arranged opposite one another in the carrier, into each of which the ends of a common piston rod are immersed. Here, too, the coupling rod is articulated directly on the piston.
Die Verwendung von Plunger-Zylindern führt zu dem Vorteil, daß gleiche Kräfte in beiden Richtungen erzeugt werden. Die Führung des Koppelpunktes an der Kolbenstange kann von der Zylinderfüh- rung mit übernommen werden und dadurch vollkommen eingespart wer¬ den. Die erfindungsgemäße Verwendung der Plunger-Zylinder führt gegenüber der Verwendung von Differentialzylindern zu einer wei¬ teren Verbilligung der Fertigung. Der Plunger-Zylinder wirkt nur in eine Richtung, so daß bei Verwendung von zwei Plunger-Zylin¬ dern auf eine Bolzenlagerung verzichtet werden kann. Weiterhin hat die Verwendung von Plunger-Zylindern den Vorteil, daß ein einfacher Austausch der Volumina möglich ist, was durch Verbin¬ den der Leitungen eine Schwimmstellung ermöglicht. Eine derarti¬ ge Schwimmstellung des Löffels ist für eine Reihe von Arbeiten sinnvoll und erforderlich. Weiterhin ist es bei der Verwendung von Plunger-Zylindern möglich, die DruckmittelZuführung durch entsprechend innerhalb der Kolbenstange vorgesehene Bohrungen vorzusehen.The use of plunger cylinders has the advantage that the same forces are generated in both directions. The coupling point on the piston rod can be guided by the cylinder tion are taken over and thereby completely saved. The use of the plunger cylinders according to the invention leads to a further reduction in the cost of manufacture compared to the use of differential cylinders. The plunger cylinder acts only in one direction, so that a pin bearing can be dispensed with when using two plunger cylinders. Furthermore, the use of plunger cylinders has the advantage that a simple exchange of the volumes is possible, which enables a floating position by connecting the lines. Such a floating position of the spoon is useful and necessary for a number of tasks. Furthermore, when using plunger cylinders, it is possible to provide the pressure medium supply through bores provided accordingly in the piston rod.
Vorteilhafte Ausführungsformen des Lösungsgedanken gemäß An¬ spruch 5 ergeben sich aus den sich auf den Anspruch 5 zurückbe¬ ziehenden Unteransprüchen 6-10.Advantageous embodiments of the solution concept according to claim 5 result from the subclaims 6-10 referring to claim 5.
Weitere Einzelheiten und Ausführungsformen der Erfindung werden im folgenden anhand von mehreren in der Zeichnung dargestellten Ausführungsformen näher erläutert. Es zeigen:Further details and embodiments of the invention are explained below with reference to several embodiments shown in the drawing. Show it:
Fig. 1: eine Seitenansicht eines Grabenräumlöffels,1 is a side view of a trench clearing bucket,
Fig. 2: eine teilweise geschnittene Vorderansicht einesFig. 2: a partially sectioned front view of a
Grabenräumlöffels gemäß einer ersten Ausführungs¬ form,Trench clearing bucket according to a first embodiment,
Fig. 2a: einen Detailschnitt gemäß der Schnittebene A-A in Fig. 2,2a: a detail section along the section plane A-A in Fig. 2,
Fig. 3: eine teilweise geschnittene Vorderansicht einer zweiten Ausführungsform eines Grabenräumlöffels,Fig. 3: a partially sectioned front view of a second embodiment of a trench clearing bucket,
Fig. 3a: einen Detailschnitt durch die Schnittebene B-B gemäß Fig. 3,3a: a detail section through the section plane B-B according to FIG. 3,
Fig. 4: eine teilweise geschnittene Vorderansicht eines Grabenräumlöffels einer dritten Ausführungsform der Erfindung,4 shows a partially sectioned front view of a trench clearing bucket of a third embodiment of the invention,
Fig. 4a: einen Detailschnitt gemäß der Schnittebene C-C in Fig. 4,4a: a detailed section along the section plane C-C in Fig. 4,
Fig. 5: eine teilweise geschnittene Vorderansicht einesFig. 5: a partially sectioned front view of a
Grabenräumlöffels gemäß einer vierten Ausführungs¬ form der vorliegenden Erfindung,Trench clearing bucket according to a fourth embodiment of the present invention,
Fig. 6: eine teilweise geschnittene Vorderansicht einer fünften Ausführungsform eines erfindungsgemäßen Grabenräumlöffels,6: a partially sectioned front view of a fifth embodiment of a trench clearing spoon according to the invention,
Fig. 7: eine teilweise geschnittene Vorderansicht einer sechsten Ausführungsform eines erfindungsgemäßen Grabenräumlöffels und7: a partially sectioned front view of a sixth embodiment of a trench clearing spoon according to the invention and
Fig. 7a: einen Detailschnitt durch die Schnittebene D-D gemäß Fig. 7.7a: a detailed section through the sectional plane D-D according to FIG. 7.
Ein Grabenräumlöffel 10 ist, wie in Fig. 1 dargestellt, schwenk¬ bar um eine Schwenkachse 12 an einem Tragstück 14 gelagert, das in an sich bekannter Weise an dem Löffelstiel eines Hydraulik¬ baggers oder dergleichen angelenkt und durch den Hydraulikzylin¬ der des Löffels verschwenkbar ist. Der Grabenräumlöffel ist an seinem oberen Ende durch einen aus einem Rohr bestehenden Träger 16 ausgesteift, an dem seitliche dreieckförmige Laschen 18, 20 befestigt sind, die der Lagerung des Grabenräumlöffels 10 an dem Tragstück 14 dienen. Der rohrför- mige Träger 16 ist im Ausführungsbeispiel gemäß Fig. 1 mit kreis¬ förmigem Querschnitt gezeigt. Hier kann aber auch ein Rohr mit quadratischem Querschnitt oder ein beliebiger Kasten als Träger 16 dienen.A trench clearing bucket 10, as shown in FIG. 1, is pivotally mounted about a pivot axis 12 on a support piece 14, which is articulated in a manner known per se on the dipper stick of a hydraulic excavator or the like and can be pivoted by the hydraulic cylinder of the bucket is. The trench clearing bucket is stiffened at its upper end by a support 16 consisting of a tube, to which lateral triangular tabs 18, 20 are fastened, which serve to support the trench clearing bucket 10 on the support piece 14. The tubular support 16 is shown in the exemplary embodiment according to FIG. 1 with a circular cross section. Here, however, a tube with a square cross section or any box can also serve as a carrier 16.
In der Ausführungsform des Grabenräumlöffels 10 gemäß der Fig. 2 ist in dem rohrförmigen Träger 16 nahe dem einen Ende ein Diffe- rentialzylinder 22 befestigt, dessen einseitige Kolbenstange 24 über einen Bolzen 26 mit einer Koppelstange 28 verbunden ist. Die Koppelstange 28 greift außermittig an dem Tragstück 14 an. Die Kolbenstange tritt durch eine schlitzartige Öffnung 30 inner¬ halb des Trägers 16 aus dem Träger aus. Seitlich auf dem Bolzen 26 sind Führungsrollen 32, 34 gelagert, die in ihrem Umfang, wie insbesondere der Fig. 2a zu entnehmen ist, an den Rohrquer¬ schnitt des Trägers 16 angepaßt sind. Gemäß dieser Konstruktion fallen der Anlenkpunkt zwischen der im Bereich der Anlenkung ga¬ belförmig ausgestalteten Kolbenstange 24 und der Koppelstange 28 mit der Achse der Führungsrollen 32 und 34 zusammen. Durch Ver¬ schieben der Kolbenstange 24 innerhalb des Differentialzylinders 22 kann dann der Grabenräumlöffel 10 um die Schwenkachse 12 ver¬ schwenkt werden.In the embodiment of the trench clearing bucket 10 according to FIG. 2, a differential cylinder 22 is fastened in the tubular carrier 16 near one end, the one-sided piston rod 24 of which is connected to a coupling rod 28 via a bolt 26. The coupling rod 28 engages off-center on the support piece 14. The piston rod exits the carrier through a slot-like opening 30 within the carrier 16. Guide rollers 32, 34 are mounted laterally on the bolt 26 and their circumference, as can be seen in particular in FIG. 2a, is adapted to the tube cross section of the carrier 16. According to this construction, the articulation point between the piston rod 24, which is designed in the form of a fork in the region of the articulation, and the coupling rod 28 coincide with the axis of the guide rollers 32 and 34. The trench clearing bucket 10 can then be pivoted about the pivot axis 12 by displacing the piston rod 24 within the differential cylinder 22.
Die Ausführungsform gemäß Fig. 3, 3a entspricht im wesentlichen derjenigen gemäß Fig. 2. Hier ist die Kolbenstange 24 ebenfalls in einem Differentialzylinder 22 gelagert und das freie Ende der Kolbenstange 24 ist gabelförmig geteilt, wie dies in der Fig. 3a gezeigt ist. Allerdings ist hier das gabelförmig geteilte Ende der Kolbenstange 24 über den Anlenkpunkt, an dem die Koppelstan¬ ge 28 angreift, hinaus verlängert. An dem freien Ende der Gabel ist um einen Bolzen 36 wiederum ein Ende eines Kolbens 38 einer weiteren Kolben-Zylinder-Anordnung 38, 40 angelenkt. Die Ausfüh¬ rungsform gemäß Fig. 3 baut breiter als diejenige gemäß Fig. 2, vermag dafür aber vergleichsweise größere Momente zu übertragen.The embodiment according to FIGS. 3, 3a essentially corresponds to that according to FIG. 2. Here, the piston rod 24 is likewise mounted in a differential cylinder 22 and the free end of the piston rod 24 is split in a fork shape, as shown in FIG. 3a. However, the forked end of the piston rod 24 is extended beyond the articulation point at which the coupling rod 28 engages. At the free end of the fork an end of a piston 38 of a further piston-cylinder arrangement 38, 40 is in turn articulated about a bolt 36. The construction according to FIG. 3 is wider than that according to FIG. 2, but can transmit comparatively larger moments.
In der Ausführungsform gemäß Fig. 4 sind zwei Plunger-Zylinder 42 und 44 innerhalb des Trägers 14 angeordnet. In die jeweiligen Plunger-Zylinder 42 und 44 tauchen die Enden einer einzigen Kol¬ benstange 46 ein, die mittig gabelförmig geteilt ist, wie insbe¬ sondere der Fig. 4a zu entnehmen ist. Auch hier ist ein Bolzen 26 vorgesehen, an dem ein freies Ende der Koppelstange 28 ange¬ lenkt ist. Auf dem Bolzen 26 sitzen auch Führungsrollen 32 und 34. Die Plunger-Zylinder 42 und 44 sind nicht fest mit dem Trä¬ ger 16 verbolzt, sondern stützen sich an entsprechenden quer durch den Träger verlaufenden Stiften 48 und 50 ab.In the embodiment according to FIG. 4, two plunger cylinders 42 and 44 are arranged within the carrier 14. The ends of a single piston rod 46, which is divided in the middle in the form of a fork, plunge into the respective plunger cylinders 42 and 44, as can be seen in particular from FIG. 4a. A bolt 26 is also provided here, to which a free end of the coupling rod 28 is articulated. Guide rollers 32 and 34 are also seated on the pin 26. The plunger cylinders 42 and 44 are not firmly bolted to the support 16, but are supported on corresponding pins 48 and 50 running transversely through the support.
Die Ausführungsform gemäß Fig. 5 entspricht weitgehend derjeni¬ gen gemäß Fig. 4. Hier ist allerdings eine vergleichsweise schma¬ lere Baubreite des Grabenräumlöffels 10 realisiert. Der Unter¬ schied zur Ausführungsform gemäß Fig. 4 besteht darin, daß hier die Kolbenstange nur über die Plunger-Zylinder 42 und 44 geführt wird. Auf die zusätzlichen Führungsrollen 32 und 34 ist bei die¬ ser Ausführungsform verzichtet worden. Die Kolbenstange 46 ist auch hier im Anlenkbereich der Koppelstange 28 geteilt, wie an¬ hand der gestrichelten Linien in Fig. 5 angedeutet ist.The embodiment according to FIG. 5 largely corresponds to that according to FIG. 4. Here, however, a comparatively narrower overall width of the trench clearing bucket 10 is realized. The difference to the embodiment according to FIG. 4 is that here the piston rod is guided only via the plunger cylinders 42 and 44. The additional guide rollers 32 and 34 have been dispensed with in this embodiment. The piston rod 46 is also divided here in the articulation area of the coupling rod 28, as is indicated by the dashed lines in FIG. 5.
In der Ausführungsform gemäß Fig. 6, in der ebenfalls eine einzi¬ ge Koppelstange 46 mit zwei Plunger-Zylindern 42 und 44 zusammen¬ wirkt, ist die Koppelstange 46 aber nicht zweigeteilt. Vielmehr ist hier ein Ansatzstück 52 mit der Koppelstange 46 verbunden, wobei ein Ende des im wesentlichen dreieckigen Ansatzstückes 52 aus dem Träger 16 durch den Schlitz 30 herausragt. An dem Ansatz¬ stück 52 kann zusätzlich ein Abdeckblech 54 zum Abdecken des Schlitzes angeschweißt sein. Am aus dem Täger 16 herausragenden Ende sitzt am Ansatzstück 52, das auch zweigeteilt ausgeführt sein kann, das freie Ende der Koppelstange 28. Dieses ist dort über einen Bolzen 26' angelenkt.In the embodiment according to FIG. 6, in which a single coupling rod 46 also interacts with two plunger cylinders 42 and 44, the coupling rod 46 is not divided into two. Rather, an extension 52 is connected to the coupling rod 46, one end of the essentially triangular extension 52 protruding from the carrier 16 through the slot 30. A cover plate 54 for covering the Slot be welded. At the end protruding from the carrier 16, the free end of the coupling rod 28 is seated on the attachment 52, which can also be made in two parts. This is articulated there via a bolt 26 '.
Schließlich ist in Fig. 7 eine Ausführungsform dargestellt, die weitgehend derjenigen gemäß Fig. 6 entspricht. Hier ist nur auf die Koppelstange 28 verzichtet. Statt dessen ist in dem Ansatz¬ stück 52 ein Längsschlitz 56 angeordnet, der von einem tragstück- festen Bolzen 58 durchgriffen wird. Wie in Fig. 7, 7a darge¬ stellt, liegen der Bolzen 58 und die Langlochführung 56 unter¬ halb des Schwenkpunktes 12. Bei dieser Bauausführung kann auf die Koppelstange verzichtet werden, die in den anderen Bauausfüh¬ rungen verwirklicht ist. Finally, FIG. 7 shows an embodiment which largely corresponds to that according to FIG. 6. Only the coupling rod 28 is dispensed with here. Instead, a longitudinal slot 56 is arranged in the attachment 52, which is penetrated by a bolt 58 fixed to the support piece. As shown in FIGS. 7, 7a, the bolt 58 and the slot guide 56 lie below the pivot point 12. In this construction, the coupling rod, which is realized in the other construction versions, can be dispensed with.

Claims

Hydraulisch schwenkbarer GrabenräumlöffelAnsprüche Hydraulically swiveling ditch cleaning bucket claims
1. Hydraulisch schwenkbarer Grabenräumlöffel mit einem am vorde¬ ren Ende eines Bagger-Löffelstiels angelenkten Tragstück, an dem der Löffel von einer hydraulischen Kolben-Zylinder-Ein¬ heit verschwenkbar um eine in Arbeitsrichtung verlaufende Schwenkachse gelagert ist, wobei die Kolben-Zylinder-Einheit parallel zur Schneide des Löffels in einem in dessen oberen Randbereich vorgesehenen Träger angeordnet und das Tragstück zur Verschwenkung des Löffels mit einem aus einer Koppelstan¬ ge bestehenden Hebel verbunden ist, an dem die Kolben-Zylin¬ der-Einheit angreift,1. Hydraulically pivotable trench clearing bucket with a support piece articulated on the front end of an excavator dipper stick, on which the bucket is pivotably supported by a hydraulic piston-cylinder unit about a pivot axis running in the working direction, the piston-cylinder unit arranged parallel to the cutting edge of the spoon in a carrier provided in its upper edge area and the support piece for pivoting the spoon is connected to a lever consisting of a coupling rod on which the piston-cylinder unit acts,
dadurch gekennzeichnet, daß die Koppelstange unmittelbar am Kolben angelenkt ist und daß im Anlenkpunkt der Koppelstange am Kolben mindestens eine Führungsrolle gelagert ist.characterized, that the coupling rod is hinged directly to the piston and that at least one guide roller is mounted on the piston at the pivot point of the coupling rod.
2. Hydraulisch schwenkbarer Grabenräumlöffel nach Anspruch 1, dadurch gekennzeichnet, daß der Kolben einseitig in einem Differentialzylinder gelagert ist und mit seinem freien Ende mit der Koppelstange verbunden ist.2. Hydraulically pivotable trench clearing bucket according to claim 1, characterized in that the piston is mounted on one side in a differential cylinder and is connected with its free end to the coupling rod.
3. Hydraulisch schwenkbarer Grabenräumlöffel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Kolben einseitig in einem Differentialzylinder gelagert ist, daß sein freies En¬ de gabelförmig geteilt ist, daß innerhalb der Gabel das freie Ende der Koppelstange drehbar angelenkt ist und daß außerhalb der Gabel beidseitig Führungsrollen angeordnet sind.3. Hydraulically pivotable trench clearing bucket according to claim 1 or 2, characterized in that the piston is mounted on one side in a differential cylinder, that its free end is divided fork-shaped, that within the fork the free end of the coupling rod is pivoted and that outside of Fork guide rollers are arranged on both sides.
4. Hydraulisch schwenkbarer Grabenräumlöffel nach Anspruch 3, dadurch gekennzeichnet, daß die Gabel über den Anlenkpunkt der Koppelstange hinausgezogen ist und daß dort das freie Ende einer zweiten in einem Zylinder gelagerten Kolbenstange angelenkt ist.4. Hydraulically pivotable trench clearing bucket according to claim 3, characterized in that the fork is pulled beyond the pivot point of the coupling rod and that there the free end of a second piston rod mounted in a cylinder is articulated.
5. Hydraulisch schwenkbarer Grabenräumlöffel mit einem am vorde¬ ren Ende eines Bagger-Löffelstiels angelenkten Tragstück, an dem der Löffel von einer hydraulischen Kolben-Zylinder-Ein¬ heit verschwenkbar um eine in Arbeitsrichtung verlaufende Schwenkachse gelagert ist, wobei die Kolben-Zylinder-Einheit parallel zur Schneide des Löffels in einem in dessen oberen Randbereich vorgesehenen Träger angeordnet ist,5. Hydraulically swiveling trench clearing bucket with a support piece articulated on the front end of an excavator dipper stick, on which the bucket is pivotably mounted by a hydraulic piston-cylinder unit about a swivel axis running in the working direction, the piston-cylinder unit is arranged parallel to the cutting edge of the spoon in a carrier provided in its upper edge area,
dadurch gekennzeichnet, daß die Koppelstange unmittelbar am Kolben angelenkt ist und daß in dem Träger zwei Plunger-Zylinder angeordnet sind, in die jeweils die Enden einer gemeinsamen Kolbenstange eintau¬ chen.characterized, that the coupling rod is articulated directly to the piston and that two plunger cylinders are arranged in the carrier, into each of which the ends of a common piston rod are inserted.
6. Hydraulisch schwenkbarer Grabenräumlöffel nach Anspruch 5, dadurch gekennzeichnet, daß im zwischen den Plunger-Zylin¬ dern liegenden Bereich der Kolbenstange eine Koppelstange angelenkt ist, die mit ihrem freien Ende an dem Tragstück angreift.6. Hydraulically pivotable trench clearing bucket according to claim 5, characterized in that a coupling rod is articulated in the region of the piston rod lying between the plunger cylinders, which engages with its free end on the support piece.
7. Hydraulisch schwenkbarer Grabenräumlöffel nach Anspruch 6, dadurch gekennzeichnet, daß im Anlenkpunkt der Koppelstange an der Kolbenstange mindestens eine Führungsrolle gelagert ist.7. Hydraulically pivotable trench clearing bucket according to claim 6, characterized in that at least one guide roller is mounted on the piston rod at the pivot point of the coupling rod.
8. Hydraulisch schwenkbarer Grabenräumlöffel nach Anspruch 5, dadurch gekennzeichnet, daß an dem zwischen den Plunger-Zy¬ lindern liegenden Teil der Kolbenstange ein durch einen Schlitz aus dem Träger herausragendes Ansatzstück angeordnet ist.8. Hydraulically pivotable trench clearing bucket according to claim 5, characterized in that a protruding piece through a slot from the carrier is arranged on the part of the piston rod lying between the plunger cylinders.
9. Hydraulisch schwenkbarer Grabenräumlöffel nach Anspruch 8, dadurch gekennzeichnet, daß an dem aus dem Träger herausra¬ genden Teil des Ansatzstückes das freie Ende einer Koppel¬ stange angelenkt ist, deren anderes Ende mit dem Tragstück zur Verschwenkung des Löffels verbunden ist.9. Hydraulically pivoting trench clearing bucket according to claim 8, characterized in that the free end of a coupling rod is articulated to the part of the extension piece projecting out of the carrier, the other end of which is connected to the support piece for pivoting the spoon.
10. Hydraulisch schwenkbarer Grabenräumlöffel nach Anspruch 9, dadurch gekennzeichnet, daß ein an dem Tragstück vorgesehe¬ ner Zapfen durch ein im Ansatzstück angeordnetes Langloch greift, so daß bei Verschiebung der Kolbenstange der Löffel verschwenkbar ist. 10. Hydraulically pivotable trench clearing bucket according to claim 9, characterized in that a pin provided on the support piece engages through an elongated hole arranged in the attachment piece, so that the spoon can be pivoted when the piston rod is displaced.
EP95907612A 1994-05-11 1995-01-25 Hydraulically pivotable ditcher shovel Expired - Lifetime EP0707678B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9407859U DE9407859U1 (en) 1994-05-11 1994-05-11 Hydraulically swiveling trench clearing bucket
DE9407859U 1994-05-11
PCT/EP1995/000272 WO1995031610A1 (en) 1994-05-11 1995-01-25 Hydraulically pivotable ditcher shovel

Publications (2)

Publication Number Publication Date
EP0707678A1 true EP0707678A1 (en) 1996-04-24
EP0707678B1 EP0707678B1 (en) 1999-04-21

Family

ID=6908558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95907612A Expired - Lifetime EP0707678B1 (en) 1994-05-11 1995-01-25 Hydraulically pivotable ditcher shovel

Country Status (6)

Country Link
US (1) US5694710A (en)
EP (1) EP0707678B1 (en)
JP (1) JPH09504063A (en)
AT (1) ATE179234T1 (en)
DE (2) DE9407859U1 (en)
WO (1) WO1995031610A1 (en)

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DE202011002981U1 (en) 2011-02-21 2012-05-22 Rolf Mieger Gripping tool with hydraulic piston-cylinder units

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Also Published As

Publication number Publication date
ATE179234T1 (en) 1999-05-15
WO1995031610A1 (en) 1995-11-23
JPH09504063A (en) 1997-04-22
US5694710A (en) 1997-12-09
DE59505697D1 (en) 1999-05-27
DE9407859U1 (en) 1994-09-01
EP0707678B1 (en) 1999-04-21

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