EP1727944B1 - Working tool for an earth-moving machine. - Google Patents

Working tool for an earth-moving machine. Download PDF

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Publication number
EP1727944B1
EP1727944B1 EP05716378A EP05716378A EP1727944B1 EP 1727944 B1 EP1727944 B1 EP 1727944B1 EP 05716378 A EP05716378 A EP 05716378A EP 05716378 A EP05716378 A EP 05716378A EP 1727944 B1 EP1727944 B1 EP 1727944B1
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EP
European Patent Office
Prior art keywords
working tool
tool according
pivoting shaft
pivoting
digging device
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EP05716378A
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German (de)
French (fr)
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EP1727944A1 (en
Inventor
Günter Holp
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Holp GmbH
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Holp GmbH
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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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
    • E02F3/404—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors comprising two parts movable relative to each other, e.g. for gripping
    • 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
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
    • E02F3/248—Cleaning the wheels or emptying the digging elements mounted on the wheels, e.g. in combination with spoil removing equipment
    • 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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/407—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with ejecting or other unloading device
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F7/00—Equipment for conveying or separating excavated material
    • E02F7/06—Delivery chutes or screening plants or mixing plants mounted on dredgers or excavators

Definitions

  • the invention relates to a working tool for an earth-moving machine, in particular an excavator, according to the preamble of patent claim 1.
  • the invention has the object to improve a working tool of the type specified in that a variable use with low installation costs is possible without restricting the basic function of the spoon or the blade.
  • the invention is based on the idea of providing a pivoting possibility for an additional device without interference contour on the basic tool.
  • the pivot drive has a pivot shaft arranged above the loading opening and extending over more than half of its width for a limited pivoting movement, and that the additional tool can be fixed on the pivot shaft exchangeably and / or positionally adjustable by means of connecting means, the bucket width or blade width can be fixed be optimally used to flexibly provide further tool functions.
  • the load space is not affected by this, and it must be made no conversion measures outside of the working tool, so that the earthmoving machine gets additional functionality without additional effort.
  • the coupling means provided for connecting the digging device with the handle project freely from the pivot shaft on the digging device.
  • the pivot shaft extends at a distance parallel to the provided for a pivoting movement of the digging device on the stem stud.
  • the entire tool can be easily mounted on the excavator, while conversely, the change of the accessory is not hindered.
  • a further improvement in this regard results from the fact that the pivot shaft extends linearly throughout.
  • the pivot shaft extends substantially - i. with the exception of any end bearing points - over the entire width of the loading opening.
  • the pivot shaft is axially and / or radially supported at bearings in the region of the side boundaries of the loading opening. It is also possible that the pivot shaft is mounted in bearing blocks on the upper boundary wall of the receiving space.
  • a structurally simple realization provides that the pivot shaft an internally mounted tube or a shell-side mounted rod as a rotating element having.
  • the connecting means may be arranged on discretely distributed or continuously continuous connection points along the pivot shaft.
  • the pivot shaft may in particular have polygonal or polygonal profile elements as connecting means for a non-rotatable positive connection with the additional tool.
  • the connecting means for hooking, plugging and / or screwing the additional tool are formed on the pivot shaft.
  • the connecting means comprise a laterally projecting on the pivot shaft pin and a arranged on the auxiliary tool, can be placed on the plug-in pin and fixable by means of securing element receiving shoe.
  • the pivot shaft of several non-rotatably connected sections is linearly assembled.
  • pivot drive is preferably arranged off-center on an upper boundary wall of the receiving space.
  • the pivot drive is formed by a coupled with the pivot shaft hydraulic lifting cylinder.
  • the optionally usable additional tool by at least one gripper finger or a flap part, in particular a sludge flap or a sorting screen is formed.
  • a further improvement is achieved when an additional tool cleaning tool is provided which can be pivoted into the digging device for cleaning the receiving space.
  • the cleaning device comprises two scrapers on the inside of the side walls of the grave device along feasible, having an arcuate cutting edge.
  • the upper boundary wall of the receiving space is reinforced by a stiffening element.
  • the working tool shown in the drawing consists essentially of a backhoe as digging device 10 and a unit mounted thereon as an attachment 12 for a replaceable additional tool 14, 16, 17th
  • the spoon 10 has a limited by side walls 18, an upper wall 20 and a lower wall 22 receiving space 24 for the grave goods.
  • a plurality of teeth 28 are arranged on a free cutting edge 26 of the lower wall 22.
  • two bearing blocks 30 are provided for a known pivot connection with a handle of an excavator, not shown.
  • the bearing blocks 30 have bearing lugs 32 for receiving a handle pin and holes 34 for engaging a drive piston.
  • the attachment 12 comprises a hydraulic drive designed as a pivot drive 36, which is supported on the cylinder side in bearing blocks 38 on the upper boundary wall 20 of the spoon 10. At the joint end of its piston rod, the hydraulic cylinder 36 is connected via an angled pivot lever 40 fixed to a pivot shaft 42.
  • the pivot shaft 42 runs parallel to the provided for a pivoting movement of the spoon 10 on the stem handle bolts (bearing eyes 32). It extends between the side walls 18 in the upper edge region of the spoon opening 43 over its entire width.
  • the pivot shaft is formed by a tube 44 which is rotatably mounted on a fixed inner axle rod 46 and is axially supported at its ends in each case on a collar 48 of the axle rod 46.
  • FIG. 1 and 2 For example, gripping fingers 14 and a flap-like sorting screen 16 are shown.
  • the additional tools 14, 16 are rotatably connected via connecting means 50 for pivotal movement with the pivot shaft 42.
  • the connecting means 50 comprise a plurality of spaced apart in pairs distributed on the pivot shaft 42 welded gentlaschen 52 for a screw 54 in combination with a positive connection 56 of the auxiliary tools 14, 16 on the pivot shaft 42. In this way, a quick replacement of the additional tools 14, 16 accordingly the desired work assignment possible.
  • connection points for a positive and rotationally secured axial plugging or coat-side hooking the additional tools on a profile element of the pivot shaft are also possible.
  • this is reinforced in the region of its upper wall 20 on the inside by a stiffening element 58 designed as an angle plate.
  • connection means 50 allow as Quick change system a quick exchange with little handling effort:
  • a further embodiment of the connecting means 50 is shown.
  • the additional tool 14, 17 has a corresponding receiving shoe 72 which can be clamped on the plug pin 70 and fix it by means of a laterally screwed securing bolt 73 thereon.
  • the in Fig. 5 shown gripping fingers 14 is provided with a detachable tooth rail 74 in order to better hold the material to be gripped, for example tree trunks.
  • a cleaning device 17 is provided for scraping the receiving space 24 as an additional tool 17. Again, a quick change connection via shaft-side spigot 70 and tool-side receiving shoes 72 is possible.
  • the cleaning device 17 is formed by two spaced-apart flat scrapers 76, which are guided along the inner surfaces of the side walls 18 in order to scrape off adhering contaminants.
  • the flat scrapers 76 have an arcuate cutting edge 78 which, in the pivoting direction, passes over almost the entire lateral inner surface in advance. Surprisingly, it has been found that this is completely sufficient for effective cleaning of the interior 24.

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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)
  • Shovels (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

The invention relates to a working tool for a piece of earth-moving machinery comprising a digging device ( 10 ) that is embodied as a bucket or scoop and delimits an accommodation space ( 24 ) for the material that is to be excavated, and a built-on device ( 12 ) which is disposed on the digging device ( 10 ), and is provided with an additional tool ( 14, 16, 17 ) that is pivotable towards the charging hole ( 43 ) of the accommodation space ( 24 ) by means of a swivel drive ( 36 ). In order to increase the number of possible uses, the swivel drive ( 36 ) encompasses a swivel shaft ( 42 ) which is located above the charging hole ( 43 ) and extends along more than half the width thereof while the additional tool ( 14, 16, 17 ) can be fixed to the swivel shaft ( 42 ) via connecting means ( 50 ).

Description

Die Erfindung betrifft ein Arbeitswerkzeug für eine Erdbaumaschine, insbesondere einen Bagger, gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a working tool for an earth-moving machine, in particular an excavator, according to the preamble of patent claim 1.

Es sind Baggerlöffel dieser Art bekannt, bei denen spezielle Zusatzeinrichtungen für definierte Arbeitszwecke angebaut sind. Diese weisen einen an das Werkzeug angepassten Schwenkmechanismus auf, bei dem über Umlenkhebel in Bolzenlagern eine lineare Antriebsbewegung eines in der Regel am Baggerstiel sitzenden Hydraulikzylinders in die Werkzeugbewegung umgesetzt wird. Als nachteilig werden hier die begrenzten Einsatzmöglichkeiten und der hohe Umrüstaufwand angesehen.There are known bucket of this type, in which special ancillary equipment for defined purposes are grown. These have a swivel mechanism adapted to the tool, in which a linear drive movement of a hydraulic cylinder, which is usually seated on the excavator handle, is converted into the tool movement by means of reversing levers in the journal bearings. A disadvantage here are the limited applications and the high conversion costs considered.

Aus der US-A-4 030 626 ist ein Arbeitswerkzeug bekannt mit den Merkmalen des Oberbegriffes nach Anspruch 1.From the US-A-4 030 626 is a working tool known with the features of the preamble of claim 1.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, ein Arbeitswerkzeug der eingangs angegebenen Art dahingehend zu verbessern, dass eine variable Verwendung mit geringem Montageaufwand möglich ist, ohne die Grundfunktion des Löffels oder der Schaufel einzuschränken.Proceeding from this, the invention has the object to improve a working tool of the type specified in that a variable use with low installation costs is possible without restricting the basic function of the spoon or the blade.

Zur Lösung dieser Aufgabe wird die im Patentanspruch 1 angegebene Merkmalskombination vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.To solve this problem, the feature combination specified in claim 1 is proposed. Advantageous embodiments and modifications of the invention will become apparent from the dependent claims.

Die Erfindung geht von dem Gedanken aus, eine Schwenkmöglichkeit für eine Zusatzeinrichtung ohne Störkontur am Grundwerkzeug bereitzustellen.The invention is based on the idea of providing a pivoting possibility for an additional device without interference contour on the basic tool.

Dadurch, dass der Schwenkantrieb eine oberhalb der Ladeöffnung angeordnete und sich über mehr als deren halbe Breite erstreckende Schwenkwelle für eine begrenzte Schwenkbewegung aufweist, und dass das Zusatzwerkzeug über Verbindungsmittel austauschbar und/oder lageveränderlich an der Schwenkwelle fixierbar ist, kann die Löffel- bzw. Schaufelbreite optimal genutzt werden, um weitere Werkzeugfunktionen flexibel bereit zu stellen. Der Laderaum wird dadurch nicht beeinträchtigt, und es müssen keine Umbaumaßnahmen außerhalb des Arbeitswerkzeugs vorgenommen werden, so dass die Erdbaumaschine ohne Mehraufwand eine zusätzliche Funktionalität bekommt. In jedem Fall sollte gewährleistet sein, dass die zur Verbindung des Grabgeräts mit dem Stiel vorgesehenen Kopplungsmittel frei von der Schwenkwelle an dem Grabgerät abstehen.Due to the fact that the pivot drive has a pivot shaft arranged above the loading opening and extending over more than half of its width for a limited pivoting movement, and that the additional tool can be fixed on the pivot shaft exchangeably and / or positionally adjustable by means of connecting means, the bucket width or blade width can be fixed be optimally used to flexibly provide further tool functions. The load space is not affected by this, and it must be made no conversion measures outside of the working tool, so that the earthmoving machine gets additional functionality without additional effort. In any case, it should be ensured that the coupling means provided for connecting the digging device with the handle project freely from the pivot shaft on the digging device.

Vorteilhafterweise verläuft die Schwenkwelle im Abstand parallel zu dem für eine Schwenkbewegung des Grabgeräts an dem Stiel vorgesehenen Stielbolzen. Dadurch kann das gesamte Werkzeug einfach am Bagger montiert werden, während umgekehrt auch der Wechsel des Zusatzgeräts nicht behindert wird. Eine weitere Verbesserung in dieser Hinsicht ergibt sich dadurch, dass die Schwenkwelle sich linear durchgehend erstreckt. Bevorzugt erstreckt sich die Schwenkwelle im wesentlichen - d.h. mit Ausnahme von etwaigen endseitigen Lagerstellen - über die gesamte Breite der Ladeöffnung.Advantageously, the pivot shaft extends at a distance parallel to the provided for a pivoting movement of the digging device on the stem stud. As a result, the entire tool can be easily mounted on the excavator, while conversely, the change of the accessory is not hindered. A further improvement in this regard results from the fact that the pivot shaft extends linearly throughout. Preferably, the pivot shaft extends substantially - i. with the exception of any end bearing points - over the entire width of the loading opening.

Um die auftretenden Kräfte günstig aufnehmen zu können, ist die Schwenkwelle an Lagerstellen im Bereich der Seitenbegrenzungen der Ladeöffnung axial und/oder radial abgestützt. Möglich ist es auch, dass die Schwenkwelle in Lagerböcken auf der oberen Begrenzungswand des Aufnahmeraums gelagert ist.In order to accommodate the forces occurring low, the pivot shaft is axially and / or radially supported at bearings in the region of the side boundaries of the loading opening. It is also possible that the pivot shaft is mounted in bearing blocks on the upper boundary wall of the receiving space.

Eine baulich einfache Realisierung sieht vor, dass die Schwenkwelle ein innen gelagertes Rohr oder einen mantelseitig gelagerten Stab als Drehelement aufweist. Dabei können die Verbindungsmittel an längs der Schwenkwelle diskret verteilten oder kontinuierlich durchgehenden Verbindungsstellen angeordnet sein.A structurally simple realization provides that the pivot shaft an internally mounted tube or a shell-side mounted rod as a rotating element having. In this case, the connecting means may be arranged on discretely distributed or continuously continuous connection points along the pivot shaft.

Um eine einfache Kopplung zu ermöglichen, kann die Schwenkwelle insbesondere mehrkantförmige oder polygonförmige Profilelemente als Verbindungsmittel für eine drehfeste formschlüssige Verbindung mit dem Zusatzwerkzeug aufweisen.In order to enable a simple coupling, the pivot shaft may in particular have polygonal or polygonal profile elements as connecting means for a non-rotatable positive connection with the additional tool.

Vorteilhafterweise sind die Verbindungsmittel zum Einhängen, Aufstecken und/oder Anschrauben des Zusatzwerkzeugs an der Schwenkwelle ausgebildet. Ein besonders rascher Werkzeugwechsel und zugleich eine sichere Halterung lässt sich dadurch ermöglichen, dass die Verbindungsmittel einen an der Schwenkwelle seitlich abstehenden Steckzapfen und einen an dem Zusatzwerkzeug angeordneten, auf den Steckzapfen aufsetzbaren und mittels Sicherungselement fixierbaren Aufnahmeschuh umfassen.Advantageously, the connecting means for hooking, plugging and / or screwing the additional tool are formed on the pivot shaft. A particularly rapid tool change and at the same time a secure mounting can be made possible in that the connecting means comprise a laterally projecting on the pivot shaft pin and a arranged on the auxiliary tool, can be placed on the plug-in pin and fixable by means of securing element receiving shoe.

Um zusätzliche Lagerstellen zu schaffen, ist es möglich, die Schwenkwelle aus mehreren drehfest verbundenen Abschnitten linear zusammengesetzt ist.In order to provide additional bearings, it is possible, the pivot shaft of several non-rotatably connected sections is linearly assembled.

Eine auch im Hinblick auf die unbehinderte Stielanbindung des Werkzeugs vorteilhafte Ausführung sieht vor, dass der Schwenkantrieb auf einer oberen Begrenzungswand des Aufnahmeraums vorzugsweise außermittig angeordnet ist.An embodiment which is also advantageous with regard to the unobstructed handle connection of the tool provides that the pivot drive is preferably arranged off-center on an upper boundary wall of the receiving space.

Vorteilhafterweise ist der Schwenkantrieb durch einen mit der Schwenkwelle gekoppelten hydraulischen Hubzylinder gebildet.Advantageously, the pivot drive is formed by a coupled with the pivot shaft hydraulic lifting cylinder.

Für einen erweiterten Funktionsumfang ist es besonders vorteilhaft, wenn das wahlweise einsetzbare Zusatzwerkzeug durch mindestens einen Greiffinger oder ein Klappenteil, insbesondere eine Schlammklappe oder ein Sortiersieb gebildet ist. Eine weitere Verbesserung wird dadurch erreicht, als Zusatzwerkzeug ein Reinigungswerkzeug vorgesehen ist, welches in das Grabgerät zur Reinigung des Aufnahmeraums einschwenkbar ist. Hierbei hat sich überraschend gezeigt, dass eine effektive Reinigung dadurch möglich ist, dass das Reinigungsgerät zwei innenseitig an den Seitenwandungen des Grabgeräts schabend entlangführbare, eine bogenförmige Schneidkante aufweisende Schaber umfasst.For an extended range of functions, it is particularly advantageous if the optionally usable additional tool by at least one gripper finger or a flap part, in particular a sludge flap or a sorting screen is formed. A further improvement is achieved when an additional tool cleaning tool is provided which can be pivoted into the digging device for cleaning the receiving space. In this case, it has surprisingly been found that an effective cleaning is possible in that the cleaning device comprises two scrapers on the inside of the side walls of the grave device along feasible, having an arcuate cutting edge.

Vorteilhaft ist es auch, wenn die obere Begrenzungswand des Aufnahmeraums durch ein Aussteifungselement verstärkt ist.It is also advantageous if the upper boundary wall of the receiving space is reinforced by a stiffening element.

Im Folgenden wird die Erfindung anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispiels näher erläutert. Es zeigen

Fig. 1
ein Arbeitsgerät für einen Bagger mit einem Grablöffel und einem Anbaugerät in einer perspektivischen Ansicht;
Fig. 2
ein austauschbares Zusatzwerkzeug für das Anbaugerät in einer perspektivischen Ansicht;
Fig. 3 und 4
das Arbeitswerkzeug nach Fig. 1 in offener und geschlos- sener Schwenkstellung des Zusatzwerkzeugs im Vertikal- schnitt senkrecht zur Schwenkachse;
Fig. 5 und 6
eine weitere Ausführung eines Zusatzwerkzeugs zur Ver- bindung mit einer Schwenkwelle in teilweise geschnittener Seitenansicht und Draufsicht;
Fig. 7 und 8
einen Reinigungsschaber als Zusatzwerkzeug in gelöster und eingeschwenkter Stellung in Kombination mit dem Grablöffel.
In the following the invention will be explained in more detail with reference to an embodiment schematically illustrated in the drawing. Show it
Fig. 1
an implement for an excavator with a grave spoon and an attachment in a perspective view;
Fig. 2
a replaceable accessory tool for the attachment in a perspective view;
3 and 4
the working tool Fig. 1 in open and closed pivot position of the additional tool in vertical section perpendicular to the pivot axis;
FIGS. 5 and 6
a further embodiment of an additional tool for connection with a pivot shaft in a partially sectioned side view and top view;
FIGS. 7 and 8
a cleaning scraper as an additional tool in dissolved and pivoted position in combination with the grave spoon.

Das in der Zeichnung dargestellte Arbeitswerkzeug besteht im Wesentlichen aus einem Tieflöffel als Grabgerät 10 und einem als Baueinheit auf diesem angeordneten Anbaugerät 12 für ein austauschbares Zusatzwerkzeug 14, 16, 17.The working tool shown in the drawing consists essentially of a backhoe as digging device 10 and a unit mounted thereon as an attachment 12 for a replaceable additional tool 14, 16, 17th

Der Löffel 10 weist einen durch Seitenwände 18, eine obere Wand 20 und eine untere Wand 22 begrenzten Aufnahmeraum 24 für das Grabgut auf. Zur Unterstützung des Grabvorgangs sind an einer freien Schneide 26 der unteren Wand 22 mehrere Zähne 28 angeordnet. An der oberen Begrenzungswand sind zwei Lagerböcke 30 für eine an sich bekannte Schwenkverbindung mit einem Stiel eines nicht gezeigten Baggers vorgesehen. Die Lagerböcke 30 weisen Lageraugen 32 zur Aufnahme eines Stielbolzens und Bohrungen 34 zum Anlenken eines Antriebskolbens auf.The spoon 10 has a limited by side walls 18, an upper wall 20 and a lower wall 22 receiving space 24 for the grave goods. To support the excavation process, a plurality of teeth 28 are arranged on a free cutting edge 26 of the lower wall 22. At the upper boundary wall two bearing blocks 30 are provided for a known pivot connection with a handle of an excavator, not shown. The bearing blocks 30 have bearing lugs 32 for receiving a handle pin and holes 34 for engaging a drive piston.

Das Anbaugerät 12 umfasst einen als Hydraulikzylinder ausgebildeten Schwenkantrieb 36, welcher zylinderseitig in Lagerböcken 38 auf der oberen Begrenzungswand 20 des Löffels 10 abgestützt ist. Am Gelenkende seiner Kolbenstange ist der Hydraulikzylinder 36 über einen abgewinkelten Schwenkhebel 40 fest mit einer Schwenkwelle 42 verbunden.The attachment 12 comprises a hydraulic drive designed as a pivot drive 36, which is supported on the cylinder side in bearing blocks 38 on the upper boundary wall 20 of the spoon 10. At the joint end of its piston rod, the hydraulic cylinder 36 is connected via an angled pivot lever 40 fixed to a pivot shaft 42.

Die Schwenkwelle 42 läuft parallel zu dem für eine Schwenkbewegung des Löffels 10 an dem Stiel vorgesehenen Stielbolzen (Lageraugen 32). Sie erstreckt sich zwischen den Seitenwänden 18 im oberen Randbereich der Löffelöffnung 43 über deren gesamte Breite. Wie auch aus Fig. 3 und 4 ersichtlich, ist die Schwenkwelle durch ein Rohr 44 gebildet, welches auf einem fest stehenden inneren Achsstab 46 drehbar gelagert ist und an seinen Enden jeweils an einem Bund 48 des Achsstabes 46 axial abgestützt ist.The pivot shaft 42 runs parallel to the provided for a pivoting movement of the spoon 10 on the stem handle bolts (bearing eyes 32). It extends between the side walls 18 in the upper edge region of the spoon opening 43 over its entire width. As well as out 3 and 4 it can be seen, the pivot shaft is formed by a tube 44 which is rotatably mounted on a fixed inner axle rod 46 and is axially supported at its ends in each case on a collar 48 of the axle rod 46.

Als Zusatzwerkzeuge sind in Fig. 1 und 2 beispielhaft Greiffinger 14 und ein klappenartiges Sortiersieb 16 dargestellt. Die Zusatzwerkzeuge 14, 16 sind über Verbindungsmittel 50 für eine Schwenkbewegung drehfest mit der Schwenkwelle 42 verbindbar. Die Verbindungsmittel 50 umfassen mehrere im Abstand voneinander paarweise verteilt an der Schwenkwelle 42 angeschweißte Schraublaschen 52 für eine Schraubverbindung 54 in Kombination mit einer Formschlussverbindung 56 der Zusatzwerkzeuge 14, 16 auf der Schwenkwelle 42. Auf diese Weise ist ein schneller Austausch der Zusatzwerkzeuge 14, 16 entsprechend dem gewünschten Arbeitseinsatz möglich.As additional tools are in Fig. 1 and 2 For example, gripping fingers 14 and a flap-like sorting screen 16 are shown. The additional tools 14, 16 are rotatably connected via connecting means 50 for pivotal movement with the pivot shaft 42. The connecting means 50 comprise a plurality of spaced apart in pairs distributed on the pivot shaft 42 welded Schraublaschen 52 for a screw 54 in combination with a positive connection 56 of the auxiliary tools 14, 16 on the pivot shaft 42. In this way, a quick replacement of the additional tools 14, 16 accordingly the desired work assignment possible.

Grundsätzlich ist es auch möglich, über ein Profilelement der Schwenkwelle beliebige Verbindungsstellen für ein formschlüssiges und drehfest gesichertes axiales Aufstecken oder mantelseitige Einhängen der Zusatzwerkzeuge zu schaffen.Basically, it is also possible to create any connection points for a positive and rotationally secured axial plugging or coat-side hooking the additional tools on a profile element of the pivot shaft.

Um die an dem Löffel 10 auftretenden Kräfte besser aufnehmen zu können, ist dieser im Bereich seiner oberen Wand 20 innenseitig durch ein als Winkelblech ausgebildetes Aussteifungselement 58 verstärkt.In order to better absorb the forces occurring on the spoon 10, this is reinforced in the region of its upper wall 20 on the inside by a stiffening element 58 designed as an angle plate.

Die Kopplung des Löffels 10 mit dem Baggerstiel über die Lagerböcke 30 erfordert keine Montagearbeiten an dem Hydraulikzylinder 36. Lediglich dessen Hydraulikverbindungen müssen über geeignete Leitungen hergestellt werden. Durch eine Betätigung des Hydraulikzylinders 36 wird der gezahnte Greiffinger 14 gegen den Löffel 10 bzw. dessen Aufnahmeöffnung 43 geschwenkt (Fig. 3, 4), so dass sich beispielsweise Baumstämme oder Steinbrocken klemmend aufnehmen lassen. Durch Einsatz eines Sortiersiebs gemäß Fig. 2 lassen sich über dessen freie Zwischenräume 60 Kleinanteile des Grabguts aus dem Aufnahmeraum 24 des Löffels 10 ausschleusen, während größere Anteile zurückgehalten werden. Entsprechend könnte auch eine Schlammklappe zum Ausschütten von Flüssigbestandteilen zum Einsatz kommen. Die genannten Verbindungsmittel 50 erlauben dabei als Schnellwechselsystem einen raschen Austausch mit geringem Handhabungsaufwand:The coupling of the bucket 10 with the excavator handle on the bearing blocks 30 requires no assembly work on the hydraulic cylinder 36. Only the hydraulic connections must be made via suitable lines. By actuating the hydraulic cylinder 36, the toothed gripping finger 14 is pivoted against the spoon 10 or its receiving opening 43 ( Fig. 3, 4 ), so that, for example, tree trunks or lumps of stone can be clamped. By using a sorting screen according to Fig. 2 can be over the free spaces 60 small parts of the grave goods from the receiving space 24 of the spoon 10 eject, while larger portions are retained. Accordingly, a sludge damper could be used to dump liquid components. The said connection means 50 allow as Quick change system a quick exchange with little handling effort:

In Fig. 5 bis 8 ist eine weitere Ausführung der Verbindungsmittel 50 gezeigt. An der Schwenkwelle 42 sind an dafür vorgesehenen Verbindungsstellen radial abstehende Steckzapfen 70 angeschweißt, während das Zusatzwerkzeug 14, 17 einen korrespondierenden Aufnahmeschuh 72 aufweist, welcher sich klemmend auf den Steckzapfen 70 aufsetzen und mittels eines seitlich einschraubbaren Sicherungsbolzens 73 darauf fixieren lässt. Der in Fig. 5 gezeigte Greiffinger 14 ist mit einer lösbaren Zahnschiene 74 versehen, um das zu greifende Gut, beispielsweise Baumstämme besser halten zu können.In Fig. 5 to 8 a further embodiment of the connecting means 50 is shown. On the pivot shaft 42 radially projecting plug pins 70 are welded to designated connecting points, while the additional tool 14, 17 has a corresponding receiving shoe 72 which can be clamped on the plug pin 70 and fix it by means of a laterally screwed securing bolt 73 thereon. The in Fig. 5 shown gripping fingers 14 is provided with a detachable tooth rail 74 in order to better hold the material to be gripped, for example tree trunks.

Bei dem in Fig. 7 und 8 gezeigten Ausführungsbeispiel ist als Zusatzwerkzeug 17 ein Reinigungsgerät 17 zum Ausschaben des Aufnahmeraums 24 vorgesehen. Auch hier ist eine Schnellwechselverbindung über wellenseitige Steckzapfen 70 und werkzeugseitige Aufnahmeschuhe 72 möglich. Das Reinigungsgerät 17 ist durch zwei im seitlichen Abstand voneinander angeordnete Flachschaber 76 gebildet, welche schabend entlang den Innenflächen der Seitenwände 18 geführt werden, um anhaftende Verschmutzungen abzukratzen. Die Flachschaber 76 weisen eine bogenförmige Schneidkante 78 auf, welche in Einschwenkrichtung voreilend nahezu die gesamte seitliche Innenfläche überstreicht. Überraschend hat sich gezeigt, dass dies für eine effektive Reinigung des Innenraums 24 völlig ausreicht.At the in FIGS. 7 and 8 shown embodiment, a cleaning device 17 is provided for scraping the receiving space 24 as an additional tool 17. Again, a quick change connection via shaft-side spigot 70 and tool-side receiving shoes 72 is possible. The cleaning device 17 is formed by two spaced-apart flat scrapers 76, which are guided along the inner surfaces of the side walls 18 in order to scrape off adhering contaminants. The flat scrapers 76 have an arcuate cutting edge 78 which, in the pivoting direction, passes over almost the entire lateral inner surface in advance. Surprisingly, it has been found that this is completely sufficient for effective cleaning of the interior 24.

Claims (15)

  1. Working tool for an earth-moving machine, in particular a digger, having a digging device (10) embodied as a scoop or bucket which is arranged so as to be pivotable on an arm of the earth-moving machine and delimits a receiving space (24) for the material to be excavated, and having an add-on device (12) which is arranged on the digging device (10) and can be detached from the arm as a modular unit with said digging device, which add-on device (12) has an auxiliary tool (14, 16, 17) which can be pivoted relative to the loading opening (43) of the receiving space (24) by means of a pivoting drive (36), with the pivoting drive (36) having a pivoting shaft (42), which is arranged above the loading opening (43) for a limited pivoting movement, and with it being possible for the auxiliary tool (14, 16, 17) to be fixed to the pivoting shaft (42) by connecting means (50) so as to be exchangeable and/or moveable in terms of position, characterized in that the pivoting shaft (42) is axially and/or radially supported on mounting points (48) on the lateral walls (18) of the loading opening (43) and extends over the width of the loading opening (43), and in that the pivoting drive (36) is arranged eccentrically on an upper delimiting wall (20) of the receiving space (24).
  2. Working tool according to Claim 1, characterized in that the pivoting shaft (42) runs parallel to and at a distance from the arm pin provided on the arm for a pivoting movement of the digging device (10).
  3. Working tool according to Claim 1 or 2, characterized in that the pivoting shaft (42) extends in a linearly continuous fashion over the entire width of the loading opening (43).
  4. Working tool according to one of Claims 1 to 3, characterized in that the pivoting shaft (42) has, as a rotary element, an internally mounted tube (44) or a rod which is mounted by means of its casing.
  5. Working tool according to one of Claims 1 to 4, characterized in that the connecting means (50) are arranged at connecting points which are distributed discretely or are continuous along the pivoting shaft (42).
  6. Working tool according to one of Claims 1 to 5, characterized in that the pivoting shaft (42) in particular has multi-sided or polygonal profiled elements as connecting means (50) for a rotationally fixed, positively locking connection to the auxiliary tool (14, 16, 17).
  7. Working tool according to one of Claims 1 to 6, characterized in that the connecting means (50) are designed for the auxiliary tool (14, 16, 17) to be suspended on, plugged onto and/or screwed onto the pivoting shaft (42).
  8. Working tool according to one of Claims 1 to 7, characterized in that the connecting means (50) comprise a laterally protruding plug-in spigot on the pivoting shaft (42) and a receiving shoe which is arranged on the auxiliary tool (14, 16, 17), and can be placed onto the plug-in spigot and can be fixed by means of a securing element.
  9. Working tool according to one of Claims 1 to 8, characterized in that the pivoting shaft (42) is composed linearly of a plurality of rotationally fixedly connected sections.
  10. Working tool according to one of Claims 1 to 9, characterized in that the pivoting drive is formed by a hydraulic lifting cylinder (36) which is coupled to the pivoting shaft.
  11. Working tool according to one of Claims 1 to 10, characterized in that the optional auxiliary tool (14, 16, 17) is formed by at least one gripping finger (14) or a flap part (16), in particular a sludge flap or a sorting sieve.
  12. Working tool according to one of Claims 1 to 11, characterized in that the optional auxiliary tool (14, 16, 17) is formed by a cleaning tool which can be pivoted into the digging device (10) in order to clean the receiving space (24).
  13. Working tool according to Claim 12, characterized in that the cleaning device comprises two scrapers (76) which can be guided along so as to scrape the inside of the side walls (18) of the digging device (10), and have a curved cutting edge (78).
  14. Working tool according to one of Claims 1 to 13, characterized in that the coupling means (30, 32) provided for connecting the digging device (10) to the arm protrude freely from the pivoting shaft (42) on the digging device (10).
  15. Working tool according to one of Claims 1 to 14, characterized in that the upper delimiting wall (20) of the receiving space (24) is reinforced by a stiffening element (58).
EP05716378A 2004-03-26 2005-03-24 Working tool for an earth-moving machine. Active EP1727944B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004015414A DE102004015414A1 (en) 2004-03-26 2004-03-26 Working tool for an earth-moving machine
PCT/EP2005/003187 WO2005093169A1 (en) 2004-03-26 2005-03-24 Working tool for a piece of earth-moving machinery

Publications (2)

Publication Number Publication Date
EP1727944A1 EP1727944A1 (en) 2006-12-06
EP1727944B1 true EP1727944B1 (en) 2010-05-26

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Application Number Title Priority Date Filing Date
EP05716378A Active EP1727944B1 (en) 2004-03-26 2005-03-24 Working tool for an earth-moving machine.

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US (1) US20080016729A1 (en)
EP (1) EP1727944B1 (en)
AT (1) ATE469272T1 (en)
DE (2) DE102004015414A1 (en)
WO (1) WO2005093169A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104389602A (en) * 2014-06-13 2015-03-04 淄博大力矿山机械有限公司 Positioning method and positioning apparatus for rock-loader bucket

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Publication number Priority date Publication date Assignee Title
JP2013024014A (en) * 2011-07-26 2013-02-04 Seiji Morioka Bucket device
CN104763006B (en) * 2015-04-18 2018-01-12 长沙学院 A kind of power shovel desludging device
WO2017161458A1 (en) * 2016-03-23 2017-09-28 Ami Attachments Inc. Robust multi-tool assembly for hydraulic excavators
US10774501B2 (en) * 2016-03-23 2020-09-15 Ami Attachments Inc. Robust multi-tool assembly for hydraulic excavators
FR3110182B1 (en) * 2020-05-15 2022-05-27 Rideau Manutention Access Riman Handling device that can be coupled to a handling machine and handling machine equipped with such a handling device

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US2770057A (en) * 1953-07-31 1956-11-13 John L Camp Grave digger
US3451575A (en) * 1967-09-15 1969-06-24 Geza Petro Jr Conveyor bucket with hydraulically-operated grille-like lid
US4030626A (en) * 1976-05-07 1977-06-21 Harvey Durham Clamp for scoop loader
US4560318A (en) * 1984-03-07 1985-12-24 Rodgers Charles F Back hoe fork lifting device
JPH06316947A (en) * 1993-05-05 1994-11-15 Katsunori Tanada Bucket-structure device for multipurpose work
US6267547B1 (en) * 1998-10-02 2001-07-31 Erik J. Lund Grapple assembly
US6357993B1 (en) * 2000-02-17 2002-03-19 Farmers' Factory Company Construction equipment implement and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104389602A (en) * 2014-06-13 2015-03-04 淄博大力矿山机械有限公司 Positioning method and positioning apparatus for rock-loader bucket
CN104389602B (en) * 2014-06-13 2016-08-31 淄博大力矿山机械有限公司 The localization method of a kind of dirt loader scraper bowl and positioner

Also Published As

Publication number Publication date
EP1727944A1 (en) 2006-12-06
ATE469272T1 (en) 2010-06-15
DE502005009640D1 (en) 2010-07-08
US20080016729A1 (en) 2008-01-24
DE102004015414A1 (en) 2005-10-13
WO2005093169A1 (en) 2005-10-06

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