EP0707678B1 - Hydraulically pivotable ditcher shovel - Google Patents

Hydraulically pivotable ditcher shovel Download PDF

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Publication number
EP0707678B1
EP0707678B1 EP95907612A EP95907612A EP0707678B1 EP 0707678 B1 EP0707678 B1 EP 0707678B1 EP 95907612 A EP95907612 A EP 95907612A EP 95907612 A EP95907612 A EP 95907612A EP 0707678 B1 EP0707678 B1 EP 0707678B1
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EP
European Patent Office
Prior art keywords
piston
shovel
coupling rod
trench
pivotable
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Expired - Lifetime
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EP95907612A
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German (de)
French (fr)
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EP0707678A1 (en
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Rolf Mieger
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Individual
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Individual
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    • 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 known.
  • a lever is used to pivot the spoon, 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 at a slidably guided in the carrier and from the piston-cylinder unit movable slider is articulated.
  • Such a slider in the according to DE 32 45 673 as a tube Providing executed carriers is comparatively complex.
  • sliding surfaces have to be produced in a welded construction be what a high manufacturing accuracy and low tolerances conditionally.
  • the object of the invention is a generic pivotable To further develop trench clearing buckets in such a way that it is easier to set up is and therefore easier and cheaper to manufacture leaves.
  • the piston can be one-sided be stored in a differential cylinder and with his free end to be connected to the coupling rod.
  • a second cylinder can be provided.
  • plunger cylinders leads to the advantage that equal forces are generated in both directions.
  • the leadership The coupling point on the piston rod can be from the cylinder guide be taken over and thus saved completely.
  • the use of the plunger cylinders according to the invention leads compared to the use of differential cylinders to another Manufacturing cheaper.
  • the plunger cylinder only works in one direction so that when using two plunger cylinders a bolt bearing can be dispensed with.
  • the use of plunger cylinders has the advantage that a simple exchange of volumes is possible, which by connecting the lines allow a floating position. Such Floating position of the spoon is for a number of jobs sensible and necessary.
  • the pressure medium supply through corresponding holes provided in the piston rod to provide.
  • a trench clearing bucket 10 is pivotable, as shown in FIG. 1 mounted about a pivot axis 12 on a support member 14, the in a manner known per se on the arm of a hydraulic excavator or the like articulated and by the hydraulic cylinder the spoon is pivotable.
  • the trench clearing spoon is out at one end a tube existing support 16 stiffened on the side triangular tabs 18, 20 are attached to the storage the trench clearing spoon 10 serve on the support piece 14.
  • the tubular in the exemplary embodiment according to FIG. 1, carrier 16 is circular Cross section shown.
  • a pipe can also be used here square cross section or any box as a carrier 16 serve.
  • the one-sided piston rod 24th 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 passes through a slot-like opening 30 inside of the carrier 16 from the carrier.
  • guide rollers 32, 34 mounted, the extent of how 2a can be seen in particular on the pipe cross section of the carrier 16 are adapted.
  • the articulation point falls between the forked in the area of the articulation configured piston rod 24 and the coupling rod 28 with the axis of the guide rollers 32 and 34 together.
  • FIGS. 3, 3a essentially corresponds that according to FIG. 2.
  • the piston rod 24 as well stored in a differential cylinder 22 and the free end of the Piston rod 24 is forked, as shown in Fig. 3a is shown.
  • the forked split end the piston rod 24 above the pivot point at which the coupling rod 28 attacks, extended beyond.
  • At the free end of the fork around a bolt 36 is in turn one end of a piston 38 another piston-cylinder arrangement 38, 40 articulated.
  • the embodiment 3 builds wider than that of FIG. 2, but can transmit comparatively larger moments.
  • plunger cylinders 42 and 44 there are two plunger cylinders 42 and 44 arranged within the carrier 14.
  • the respective Plunger cylinders 42 and 44 dip the ends of a single piston rod 46 a, which is divided in the middle of a fork, such as in particular 4a can be seen.
  • a bolt too 26 is provided, on which a free end of the coupling rod 28 is articulated is.
  • the plunger cylinders 42 and 44 are not fixed to the carrier 16 bolted, but are based on corresponding cross pins 48 and 50 extending through the support.
  • the embodiment according to FIG. 5 largely corresponds to that according to FIG. 4.
  • the difference 4 consists in the fact that here the piston rod is only guided over the plunger cylinders 42 and 44 becomes.
  • the piston rod 46 is divided here in the articulation area of the coupling rod 28 as well the dashed lines in Fig. 5 is indicated.
  • the coupling rod 46 is not divided into two.
  • an extension piece 52 is connected to the coupling rod 46, one end of the substantially triangular neck piece 52nd protrudes from the carrier 16 through the slot 30.
  • At the end piece 52 can also have a cover plate 54 for covering the Slot be welded.
  • the extension 52 On the protruding from the carrier 16 The end sits on the extension 52, which is also made in two parts can be, the free end of the coupling rod 28. This is there articulated via a bolt 26 '.
  • FIG. 6 an embodiment is shown in FIG largely corresponds to that according to FIG. 6.
  • the coupling rod 28 is dispensed with. Instead, it is in the attachment 52 a longitudinal slot 56 is arranged by a fixed to the support Bolt 58 is penetrated. As shown in Figs. 7, 7a, are the bolt 58 and the slot guide 56 below of the pivot point 12. With this construction, can the coupling rod are dispensed with in the other construction types is realized.

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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)
  • Earth Drilling (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Fluid-Damping Devices (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Joints Allowing Movement (AREA)
  • Actuator (AREA)
  • Crushing And Grinding (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Shovels (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

Die Erfindung betrifft einen hydraulisch schwenkbaren Grabenräumlöffel 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 Tragstück im Abstand von der Schwenkachse des Löffels un deren anderes 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 Toleranzen bedingt.Such a trench clearing bucket is already known from DE 32 45 673 C known. A lever is used to pivot the spoon, 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 at a slidably guided in the carrier and from the piston-cylinder unit movable slider is articulated. Such a slider in the according to DE 32 45 673 as a tube Providing executed carriers is comparatively complex. Here, sliding surfaces have to be produced in a welded construction be what a high manufacturing accuracy and low tolerances conditionally.

Aufgabe der Erfindung ist es, einen gattungsgemäßen schwenkbaren Grabenräumlöffel derart weiterzubilden, daß er einfacher aufgebaut ist und sich daher einfacher und kostengünstiger herstellen läßt. The object of the invention is a generic pivotable To further develop trench clearing buckets in such a way that it is easier to set up is and therefore easier and cheaper to manufacture leaves.

Ausgehend von einem gattungsgemäßen hydraulisch schwenkbaren Grabenräumlöffel 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 Baubreite, der besseren Krafteinleitung, da keine Momente auf die Führung wirken, dem besseren Wirkungsgrad, der durch die Rollreibung 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.Starting from a generic hydraulic swiveling trench clearing bucket there is the first solution to the above problem in that the coupling rod is hinged directly to the piston and that at least the pivot point of the coupling rod on the piston a guide roller is mounted. Compared to the generic The advantages are hydraulically swiveling ditch cleaning buckets the solution according to the invention in the substantially more favorable width, the better application of force, as no moments on the Leadership work, the better efficiency, due to the rolling friction instead of sliding friction is achieved, and the cheaper Manufacturing that results from the fact that there are no sliding surfaces here are more necessary for a slider. By the lesser Space requirement is an optimal moment distribution possible and it can even use a comparatively larger cylinder become.

Bevorzugte Ausgestaltungen der erfindungsgemäßen Lehre ergeben sich aus den Unteransprüchen 2-4. Demnach kann der Kolben einseitig in einem Differentialzylinder gelagert sein und mit seinem freien Ende mit der Koppelstange verbunden sein. Gemäß einer alternativen Ausführungsform zur Übertragung großer Momente kann ein zweiter Zylinder vorgesehen sein.Preferred configurations of the teaching according to the invention result deriving from subclaims 2-4. Accordingly, the piston can be one-sided be stored in a differential cylinder and with his free end to be connected to the coupling rod. According to an alternative Embodiment for transmitting large moments can a second cylinder can be provided.

Eine weitere Lösung der zuvor formulierten Aufgabe besteht darin, daß bei einem gattungsgemäßen hydraulisch schwenkbaren Grabenräumlöffel in dem Träger zwei Plunger-Zylinder sich gegenüber angeordnet sind, in die jeweils die Enden einer gemeinsamen Kolbenstange eintauchen. Auch hier ist die Koppelstange unmittelbar am Kolben angelenkt.Another solution to the previously formulated task is that with a generic hydraulic swiveling trench clearing bucket in the carrier two plunger cylinders face each other are arranged, in each of which the ends of a common piston rod immerse yourself. The coupling rod is also direct here hinged to 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 Zylinderführung mit übernommen werden und dadurch vollkommen eingespart werden. Die erfindungsgemäße Verwendung der Plunger-Zylinder führt gegenüber der Verwendung von Differentialzylindern zu einer weiteren Verbilligung der Fertigung. Der Plunger-Zylinder wirkt nur in eine Richtung, so daß bei Verwendung von zwei Plunger-Zylindern 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 Verbinden der Leitungen eine Schwimmstellung ermöglicht. Eine derartige 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 leads to the advantage that equal forces are generated in both directions. The leadership The coupling point on the piston rod can be from the cylinder guide be taken over and thus saved completely. The use of the plunger cylinders according to the invention leads compared to the use of differential cylinders to another Manufacturing cheaper. The plunger cylinder only works in one direction so that when using two plunger cylinders a bolt bearing can be dispensed with. Farther the use of plunger cylinders has the advantage that a simple exchange of volumes is possible, which by connecting the lines allow a floating position. Such Floating position of the spoon is for a number of jobs sensible and necessary. Furthermore, it is in use of plunger cylinders possible, the pressure medium supply through corresponding holes provided in the piston rod to provide.

Vorteilhafte Ausführungsformen des Lösungsgedanken gemäß Anspruch 5 ergeben sich aus den sich auf den Anspruch 5 zurückbeziehenden Unteransprüchen 6-10.Advantageous embodiments of the solution according to claim 5 result from the referring back to claim 5 Subclaims 6-10.

Weitere Einzelheiten und Ausführungsformen der Erfindung werden im folgenden anhand von mehreren in der Zeichnung dargestellten Ausführungsformen näher erläutert. Es zeigen:

Fig. 1:
eine Seitenansicht eines Grabenräumlöffels,
Fig. 2:
eine teilweise geschnittene Vorderansicht eines Grabenräumlöffels gemäß einer ersten Ausführungsform,
Fig. 2a:
einen Detailschnitt gemäß der Schnittebene A-A in Fig. 2,
Fig. 3:
eine teilweise geschnittene Vorderansicht einer zweiten Ausführungsform eines Grabenräumlöffels,
Fig. 3a:
einen Detailschnitt durch die Schnittebene B-B gemäß Fig. 3,
Fig. 4:
eine teilweise geschnittene Vorderansicht eines Grabenräumlöffels einer dritten Ausführungsform der Erfindung,
Fig. 4a:
einen Detailschnitt gemäß der Schnittebene C-C in Fig. 4,
Fig. 5:
eine teilweise geschnittene Vorderansicht eines Grabenräumlöffels gemäß einer vierten Ausführungsform der vorliegenden Erfindung,
Fig. 6:
eine teilweise geschnittene Vorderansicht einer fünften Ausführungsform eines erfindungsgemäßen Grabenräumlöffels,
Fig. 7:
eine teilweise geschnittene Vorderansicht einer sechsten Ausführungsform eines erfindungsgemäßen Grabenräumlöffels und
Fig. 7a:
einen Detailschnitt durch die Schnittebene D-D gemäß Fig. 7.
Further details and embodiments of the invention are explained below with reference to several embodiments shown in the drawing. Show it:
Fig. 1:
a side view of a trench clearing bucket,
Fig. 2:
FIG. 2 shows a partially sectioned front view of a trench clearing bucket according to a first embodiment,
Fig. 2a:
3 shows a detailed section according to the section plane AA in FIG. 2,
Fig. 3:
FIG. 2 shows a partially sectioned front view of a second embodiment of a trench clearing bucket,
Fig. 3a:
3 shows a detail section through the section plane BB according to FIG. 3,
Fig. 4:
FIG. 2 shows a partially sectioned front view of a trench clearing bucket of a third embodiment of the invention,
Fig. 4a:
3 shows a detailed section according to the sectional plane CC in FIG. 4,
Fig. 5:
FIG. 2 shows a partially sectioned front view of a trench clearing bucket according to a fourth embodiment of the present invention,
Fig. 6:
2 shows a partially sectioned front view of a fifth embodiment of a trench clearing spoon according to the invention,
Fig. 7:
a partially sectioned front view of a sixth embodiment of a trench scoop according to the invention and
Fig. 7a:
7 shows a detail section through the section plane DD according to FIG. 7.

Ein Grabenräumlöffel 10 ist, wie in Fig. 1 dargestellt, schwenkbar um eine Schwenkachse 12 an einem Tragstück 14 gelagert, das in an sich bekannter Weise an dem Löffelstiel eines Hydraulikbaggers oder dergleichen angelenkt und durch den Hydraulikzylinder des Löffels verschwenkbar ist. A trench clearing bucket 10 is pivotable, as shown in FIG. 1 mounted about a pivot axis 12 on a support member 14, the in a manner known per se on the arm of a hydraulic excavator or the like articulated and by the hydraulic cylinder the spoon is pivotable.

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 rohrförmige Träger 16 ist im Ausführungsbeispiel gemäß Fig. 1 mit kreisförmigem Querschnitt gezeigt. Hier kann aber auch ein Rohr mit quadratischem Querschnitt oder ein beliebiger Kasten als Träger 16 dienen.The trench clearing spoon is out at one end a tube existing support 16 stiffened on the side triangular tabs 18, 20 are attached to the storage the trench clearing spoon 10 serve on the support piece 14. The tubular In the exemplary embodiment according to FIG. 1, carrier 16 is circular Cross section shown. A pipe can also be used here square cross section or any box as a carrier 16 serve.

In der Ausführungsform des Grabenräumlöffels 10 gemäß der Fig. 2 ist in dem rohrförmigen Träger 16 nahe dem einen Ende ein Differentialzylinder 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 innerhalb 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 Rohrquerschnitt des Trägers 16 angepaßt sind. Gemäß dieser Konstruktion fallen der Anlenkpunkt zwischen der im Bereich der Anlenkung gabelförmig ausgestalteten Kolbenstange 24 und der Koppelstange 28 mit der Achse der Führungsrollen 32 und 34 zusammen. Durch Verschieben der Kolbenstange 24 innerhalb des Differentialzylinders 22 kann dann der Grabenräumlöffel 10 um die Schwenkachse 12 verschwenkt werden.In the embodiment of the trench clearing bucket 10 according to FIG. 2 is in the tubular support 16 near one end a differential cylinder 22 attached, the one-sided piston rod 24th 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 passes through a slot-like opening 30 inside of the carrier 16 from the carrier. Laterally on the bolt 26 are guide rollers 32, 34 mounted, the extent of how 2a can be seen in particular on the pipe cross section of the carrier 16 are adapted. According to this construction the articulation point falls between the forked in the area of the articulation configured piston rod 24 and the coupling rod 28 with the axis of the guide rollers 32 and 34 together. By moving the piston rod 24 within the differential cylinder 22 can then the trench clearing bucket 10 pivoted about the pivot axis 12 become.

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 Koppelstange 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 Ausführungsform 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 that according to FIG. 2. Here is the piston rod 24 as well stored in a differential cylinder 22 and the free end of the Piston rod 24 is forked, as shown in Fig. 3a is shown. However, here is the forked split end the piston rod 24 above the pivot point at which the coupling rod 28 attacks, extended beyond. At the free end of the fork around a bolt 36 is in turn one end of a piston 38 another piston-cylinder arrangement 38, 40 articulated. The embodiment 3 builds wider than that of 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 Kolbenstange 46 ein, die mittig gabelförmig geteilt ist, wie insbesondere der Fig. 4a zu entnehmen ist. Auch hier ist ein Bolzen 26 vorgesehen, an dem ein freies Ende der Koppelstange 28 angelenkt ist. Auf dem Bolzen 26 sitzen auch Führungsrollen 32 und 34. Die Plunger-Zylinder 42 und 44 sind nicht fest mit dem Träger 16 verbolzt, sondern stützen sich an entsprechenden quer durch den Träger verlaufenden Stiften 48 und 50 ab.In the embodiment according to FIG. 4 there are two plunger cylinders 42 and 44 arranged within the carrier 14. In the respective Plunger cylinders 42 and 44 dip the ends of a single piston rod 46 a, which is divided in the middle of a fork, such as in particular 4a can be seen. Here is a bolt too 26 is provided, on which a free end of the coupling rod 28 is articulated is. Guide rollers 32 and also sit on the bolt 26 34. The plunger cylinders 42 and 44 are not fixed to the carrier 16 bolted, but are based on corresponding cross pins 48 and 50 extending through the support.

Die Ausführungsform gemäß Fig. 5 entspricht weitgehend derjenigen gemäß Fig. 4. Hier ist allerdings eine vergleichsweise schmalere Baubreite des Grabenräumlöffels 10 realisiert. Der Unterschied 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 dieser Ausführungsform verzichtet worden. Die Kolbenstange 46 ist auch hier im Anlenkbereich der Koppelstange 28 geteilt, wie anhand der gestrichelten Linien in Fig. 5 angedeutet ist.The embodiment according to FIG. 5 largely corresponds to that according to FIG. 4. Here, however, is a comparatively narrower one Width of the trench clearing bucket 10 realized. The difference 4 consists in the fact that here the piston rod is only guided over the plunger cylinders 42 and 44 becomes. On the additional guide rollers 32 and 34 is in this Embodiment has been dispensed with. The piston rod 46 is divided here in the articulation area of the coupling rod 28 as well the dashed lines in Fig. 5 is indicated.

In der Ausführungsform gemäß Fig. 6, in der ebenfalls eine einzige Koppelstange 46 mit zwei Plunger-Zylindern 42 und 44 zusammenwirkt, 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 Ansatz stückes 52 aus dem Träger 16 durch den Schlitz 30 herausragt. An dem Ansatzstück 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.6, in which also a single Coupling rod 46 cooperates with two plunger cylinders 42 and 44, the coupling rod 46 is not divided into two. Much more here an extension piece 52 is connected to the coupling rod 46, one end of the substantially triangular neck piece 52nd protrudes from the carrier 16 through the slot 30. At the end piece 52 can also have a cover plate 54 for covering the Slot be welded. On the protruding from the carrier 16 The end sits on the extension 52, which is also made in two parts can be, the free end of the coupling rod 28. This is there articulated 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 Ansatzstück 52 ein Längsschlitz 56 angeordnet, der von einem tragstückfesten Bolzen 58 durchgriffen wird. Wie in Fig. 7, 7a dargestellt, liegen der Bolzen 58 und die Langlochführung 56 unterhalb des Schwenkpunktes 12. Bei dieser Bauausführung kann auf die Koppelstange verzichtet werden, die in den anderen Bauausführungen verwirklicht ist.Finally, an embodiment is shown in FIG largely corresponds to that according to FIG. 6. Here is just on the coupling rod 28 is dispensed with. Instead, it is in the attachment 52 a longitudinal slot 56 is arranged by a fixed to the support Bolt 58 is penetrated. As shown in Figs. 7, 7a, are the bolt 58 and the slot guide 56 below of the pivot point 12. With this construction, can the coupling rod are dispensed with in the other construction types is realized.

Claims (10)

  1. Hydraulically pivotable trench-clearing shovel, with a carrying piece which is articulated on the front end of an excavator shovel arm and on which the shovel is mounted so as to be pivotable by a hydraulic piston/cylinder unit about a pivot axis running in the working direction, the piston/cylinder unit being arranged parallel to the cutter of the shovel in a carrier provided in the upper edge region of the latter, and the carrying piece being connected, for the purpose of pivoting the shovel, to a lever which consists of a coupling rod and on which the piston/cylinder unit engages, characterized in that the coupling rod is articulated directly on the piston, and in that at least one guide roller is mounted at the point of articulation of the coupling rod on the piston.
  2. Hydraulically pivotable trench-clearing shovel according to Claim 1, characterized in that the piston is mounted on one side in a differential cylinder and is connected at its free end to the coupling rod.
  3. Hydraulically pivotable trench-clearing shovel according to Claim 1 or 2, characterized in that the piston is mounted on one side in a differential cylinder, in that its free end is divided in a fork-like manner, in that the free end of the coupling rod is articulated rotatably within the fork, and in that guide rollers are arranged on both sides outside the fork.
  4. Hydraulically pivotable trench-clearing shovel according to Claim 3, characterized in that the fork is extended beyond the point of articulation of the coupling rod, and in that, there, the free end of a second piston rod mounted in a cylinder is articulated.
  5. Hydraulically pivotable trench-clearing shovel, with a carrying piece which is articulated on the front end of an excavator shovel arm and on which the shovel is mounted so as to be pivotable by a hydraulic piston/cylinder unit about a pivot axis running in the working direction, the piston/cylinder unit being arranged parallel to the cutter of the shovel in a carrier provided in the upper edge region of the latter, characterized in that the coupling rod is articulated directly on the piston, and in that arranged in the carrier are two plunger cylinders, into which the ends of a common piston rod penetrate in each case.
  6. Hydraulically pivotable trench-clearing shovel according to Claim 5, characterized in that a coupling rod, which engages at its free end on the carrying piece, is articulated in that region of the piston rod which is located between the plunger cylinders.
  7. Hydraulically pivotable trench-clearing shovel according to Claim 6, characterized in that at least one guide roller is mounted at the point of articulation of the coupling rod on the piston rod.
  8. Hydraulically pivotable trench-clearing shovel according to Claim 5, characterized in that an extension piece projecting from the carrier through a slot is arranged on that part of the piston rod which is located between the plunger cylinders.
  9. Hydraulically pivotable trench-clearing shovel according to Claim 8, characterized in that the free end of a coupling rod is articulated on that part of the extension piece which projects from the carrier, the other end of the said coupling rod being connected to the carrying piece for the purpose of pivoting the shovel.
  10. Hydraulically pivotable trench-clearing shovel according to Claim 9, characterized in that a pin provided on the carrying piece engages through a long hole arranged in the extension piece, so that the shovel 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 1994-05-11
DE9407859U DE9407859U1 (en) 1994-05-11 1994-05-11 Hydraulically swiveling trench clearing bucket
PCT/EP1995/000272 WO1995031610A1 (en) 1994-05-11 1995-01-25 Hydraulically pivotable ditcher shovel

Publications (2)

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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29621253U1 (en) * 1996-12-06 1997-05-22 Mieger, Rolf, Ing. (grad.), 88457 Kirchdorf Swivel adapter
EP0957209B1 (en) * 1998-05-12 2007-02-14 Rolf Mieger Hydraulic piston-cylinder-unit for a pivot drive
DE20012390U1 (en) 2000-07-17 2000-10-05 Mieger, Rolf, Ing. (grad.), 88457 Kirchdorf Hydraulically swiveling bucket, especially trench clearing bucket
DE202005017762U1 (en) * 2005-11-14 2007-03-29 Mieger, Rolf Double-acting plunger cylinder and drive for a gripper
FR2929968B1 (en) * 2008-04-14 2011-09-30 Const Du Beaujolais Atel DEVICE FOR TILTING A TOOL AND IN PARTICULAR A BUCKET OF A PUBLIC WORKS MACHINE
WO2009129812A1 (en) * 2008-04-24 2009-10-29 Optimal Service V/Torben Ulriksen A tilting device for an excavator, a method for tilting an excavator tool and use of a tilting device
DE202011002981U1 (en) 2011-02-21 2012-05-22 Rolf Mieger Gripping tool with hydraulic piston-cylinder units
CN116034681A (en) * 2023-02-20 2023-05-02 西宁国家农业科技园区服务中心 Sowing machine

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Also Published As

Publication number Publication date
ATE179234T1 (en) 1999-05-15
DE9407859U1 (en) 1994-09-01
DE59505697D1 (en) 1999-05-27
JPH09504063A (en) 1997-04-22
US5694710A (en) 1997-12-09
WO1995031610A1 (en) 1995-11-23
EP0707678A1 (en) 1996-04-24

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