EP0440895A1 - Earth moving machine, in particular a bucket excavator - Google Patents

Earth moving machine, in particular a bucket excavator Download PDF

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Publication number
EP0440895A1
EP0440895A1 EP90122250A EP90122250A EP0440895A1 EP 0440895 A1 EP0440895 A1 EP 0440895A1 EP 90122250 A EP90122250 A EP 90122250A EP 90122250 A EP90122250 A EP 90122250A EP 0440895 A1 EP0440895 A1 EP 0440895A1
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EP
European Patent Office
Prior art keywords
boom
rotation
axis
superstructure
swivel bracket
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Granted
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EP90122250A
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German (de)
French (fr)
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EP0440895B1 (en
Inventor
Reinhard Dipl.-Ing. Stenger
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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Publication of EP0440895A1 publication Critical patent/EP0440895A1/en
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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
    • E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
    • E02F3/382—Connections to the frame; Supports for booms or arms
    • E02F3/384—Connections to the frame; Supports for booms or arms the boom being pivotable relative to the frame about a vertical axis

Definitions

  • the invention relates to an excavator, in particular a backhoe, according to the preamble of claim 1.
  • the boom pivot bracket of a superstructure aligned in the direction of travel can be pivoted by approximately 90 ° from a position in a vehicle transverse plane to a position in a vehicle longitudinal plane via a hydraulic cylinder.
  • the outrigger arm with the spoon which is articulated on the outrigger swivel bracket, can be swiveled on the swivel bracket via a rotary motor into a position alongside the uppercarriage.
  • additional means such as the rotary motor is required to pivot the cantilever arm into a transport position.
  • Another backhoe excavator is known from DE-A 34 25 838, which has a swivel device connected to a boom swivel bracket, which comprises a hydraulic cylinder connected to the swivel bracket with the interposition of a link.
  • the cantilever arm of this backhoe cannot be placed in a transport position alongside the uppercarriage due to the design of the swivel device, so that road travel operation at relatively high speed does not appear possible due to the poor visibility.
  • the object of the invention is to provide a backhoe, the cantilever arm ensures a relatively large pivoting path via a structurally simple pivoting device and enables driving in road driving operation with good visibility at a relatively high speed.
  • the cantilever arm is pivoted back from its front working position into a back position by a swivel device designed as a crank mechanism rear transport position is shiftable, in which the cantilever arm is to be arranged alongside the uppercarriage and approximately parallel to the longitudinal central axis of the excavator and thus the prerequisite for a fast road trip is present, since there is an improved view.
  • crank gear for the boom consisting essentially of an angle lever and the connecting link is small, so that only a small space is required for accommodation.
  • the parts of the crank mechanism because of their kinematic points, only need a little free space for their swiveling movements.
  • the crank mechanism is designed in such a way that in the transport position, i.e. if the cantilever arm is alongside the superstructure there is a low torque and the forces to be supported are relatively small, since in this position there are no longer any significant loads.
  • the working positions e.g. In an intermediate work position with a cantilever arm swung out transversely to the direction of travel (Fig. 3) and in a front end-of-work position (Fig. 1), approximately the same torque is achieved. There is a greater torque between these working positions due to the changing lever lengths of the crank mechanism, but the forces to be supported in the axes of rotation remain essentially the same in all working positions.
  • a backhoe 1 essentially comprises an undercarriage 2 with undercarriage and wheels 3 and an uppercarriage 4 which can be swiveled via a slewing ring as the first vertical axis of rotation to the undercarriage 2 and in which the driver's cab 5 is arranged.
  • a cantilever arm 6 is connected as a monoblock boom via a cantilever swivel bracket 7 so as to be pivotable about a second vertical axis of rotation 8.
  • the boom pivot bracket 7 is connected to a crank mechanism 9 that is driven by a hydraulic cylinder 10.
  • the crank mechanism 9 essentially comprises an angle lever 11 which can be pivoted about a fixed third vertical axis of rotation 12.
  • the angle lever 11 has two articulation points 13 and 14, with the hydraulic cylinder 10 engaging with its piston rod at the one articulation point 13 and a connecting link 15 is mounted in the further articulation point 14, which in turn is articulated with the boom pivot bracket 7 in a bearing 16 with a vertical Axis of rotation 17 is connected.
  • the boom swivel bracket 7 with the boom arm 6 is from a front working end position A (Fig. 1) via intermediate work positions e.g. B and C (Fig. 2 and 3) can be pivoted into a transport position D (Fig. 4).
  • working position A the boom pivot bracket 7 with the boom arm 6 is approximately at an angle of 30 ° to a plane X-X running parallel to the longitudinal center axis 18 through the second axis of rotation 8.
  • the cantilever arm 6 can be pivoted about the axis of rotation 8 up to the rear working position C, in which the cantilever arm 6 is oriented transversely to the superstructure 4.
  • the cantilever arm 6 By further pivoting the cantilever arm 6 against the direction of travel F, the cantilever arm 6 assumes a transport position D. In this position D, the cantilever arm 6 with a spoon lies alongside the uppercarriage 4 and parallel to the longitudinal central axis 18 of the vehicle 1.
  • crank mechanism In order to achieve this desired swivel movement with an angle of approximately 210 ° or larger without additional swivel motors, the crank mechanism must be used 9 in the front working end position A assume a position as shown in Fig. 1.
  • the hydraulic cylinder 10 is adjusted to the crank mechanism 9 in such a way that the longitudinal axis 20 of the hydraulic cylinder 10 lies in a vertical plane Z-Z, in which the pivot point 13 of the crank mechanism 9 and adjacent to the plane, the axis of rotation 17 of the connecting link 15 is arranged.
  • the hydraulic cylinder 10 is arranged in relation to the direction of travel F in an obliquely forward and inward position and is mounted at an acute angle a of approximately 45 ° to the longitudinal central axis 18, the articulation point 21 on the body side being close to the outer wall 22 of the superstructure 4 .
  • the boom swivel bracket 7 receives a horn 25 of the superstructure 4 between the legs 23 and 24 and is fastened via a bolt 25, which forms the second axis of rotation 8.
  • the connecting link 15 is supported rotatably about the vertical axis 17.
  • a pivot cylinder 28 engages in an eye 27 of the boom pivot bracket 7 for the vertical adjustment of the boom arm 6.
  • the further eye 29 serves to receive the extension arm 6.
  • the diagram according to FIG. 6 shows that the torques about the vertical axis 8 of the boom pivot bracket 7 in the positions A and C, i.e. are approximately the same size in the front working end position A and in the rear working end position C and there is an increase in the torque in the intermediate working positions due to the kinematics of the crank mechanism.
  • the bearing forces to be supported are approximately the same in the working positions due to the design of the crank mechanism.

Abstract

In an earth-moving machine, in particular a bucket excavator, the superstructure is pivotable on a chassis about a first vertical pivot, on which superstructure a boom arm (6) is pivotably held via a boom pivot block (7) about a second vertical pivot (8) which accommodates the boom arm in a supporting manner. Connected to the boom pivot block is a pivoting device which comprises a hydraulic cylinder connected to the pivot block with a guide link in between. The boom pivot block with boom arm can be rotated via a driven crank mechanism (9) from a front working end position, running at an angle to the longitudinal centre axis of the earth-moving machine, about the second vertical pivot into a transport position swung back with regard to the direction of travel. In this position, the boom arm is arranged parallel to the longitudinal centre axis and at the side of the superstructure, which enables the earth-moving machine to be driven on the road at relatively high speed. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Bagger, insbesondere einen Löffelbagger nach dem Oberbegriff des Anspruches 1.The invention relates to an excavator, in particular a backhoe, according to the preamble of claim 1.

Aus der DE-A 27 57 968 ist ein fahrbarer Löffelbagger bekannt, dessen Auslegerschwenkbock bei einem in Fahrtrichtung ausgerichteten Oberwagen um ca. 90° von einer Stellung in einer Fahrzeugquerebene bis zu einer Stellung in einer Fahrzeuglängsebene über ein Hydraulikzylinder verschwenkbar ist. Der am Auslegerschwenkbock angelenkte Auslegerarm mit dem Löffel ist am Schwenkbock über einen Drehmotor in eine Lage längsseits des Oberwagens verschwenkbar. Bei dieser Anlenkung des Auslegerschwenkbocks sind zusätzliche Mittel, wie z.B. der Drehmotor erforderlich, um den Auslegerarm in eine Transportstellung zu verschwenken.From DE-A 27 57 968 a mobile backhoe is known, the boom pivot bracket of a superstructure aligned in the direction of travel can be pivoted by approximately 90 ° from a position in a vehicle transverse plane to a position in a vehicle longitudinal plane via a hydraulic cylinder. The outrigger arm with the spoon, which is articulated on the outrigger swivel bracket, can be swiveled on the swivel bracket via a rotary motor into a position alongside the uppercarriage. With this articulation of the jib swivel bracket additional means, such as the rotary motor is required to pivot the cantilever arm into a transport position.

Aus der DE-A 34 25 838 ist ein weiterer Löffelbagger bekannt, der ein mit einem Auslegerschwenkbock verbundene Schwenkeinrichtung aufweist, die einen unter Zwischenschaltung eines Lenkers mit dem Schwenkbock verbundenen Hydraulikzylinder umfaßt. Der Auslegerarm dieses Löffelbaggers ist aufgrund der Ausbildung der Schwenkeinrichtung nicht längsseits des Oberwagens in eine Transportstellung ablegbar, so daß ein Straßenfahrbetrieb durch die schlechte Sicht mit relativ hoher Geschwindigkeit nicht möglich erscheint.Another backhoe excavator is known from DE-A 34 25 838, which has a swivel device connected to a boom swivel bracket, which comprises a hydraulic cylinder connected to the swivel bracket with the interposition of a link. The cantilever arm of this backhoe cannot be placed in a transport position alongside the uppercarriage due to the design of the swivel device, so that road travel operation at relatively high speed does not appear possible due to the poor visibility.

Aufgabe der Erfindung ist es, einen Löffelbagger zu schaffen, dessen Auslegerarm über eine baulich einfache Schwenkeinrichtung einen relativ großen Schwenkweg gewährleistet und ein Fahren im Straßenfahrbetrieb bei guter Sicht mit relativ hoher Geschwindigkeit ermöglicht.The object of the invention is to provide a backhoe, the cantilever arm ensures a relatively large pivoting path via a structurally simple pivoting device and enables driving in road driving operation with good visibility at a relatively high speed.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Weitere vorteilhafte Merkmale beinhalten die Unteransprüche.This object is achieved by the characterizing features of claim 1. The dependent claims contain further advantageous features.

Die mit der Erfindung hauptsächlich erzielten Vorteile bestehen darin, daß durch eine als Kurbelgetriebe ausgebildete Schwenkeinrichtung der Auslegerarm von seiner vorderen Arbeitsstellung in eine zurückgeschwenkte hintere Transportstellung verlagerbar ist, bei der der Auslegerarm längsseits des Oberwagens und etwa parallel zur Längsmittelachse des Baggers anzuordnen ist und somit die Vorraussetzung für eine schnelle Straßenfahrt vorliegt, da eine verbesserte Sicht gegeben ist.The main advantages achieved with the invention are that the cantilever arm is pivoted back from its front working position into a back position by a swivel device designed as a crank mechanism rear transport position is shiftable, in which the cantilever arm is to be arranged alongside the uppercarriage and approximately parallel to the longitudinal central axis of the excavator and thus the prerequisite for a fast road trip is present, since there is an improved view.

Das Kurbelgetriebe für den Ausleger, bestehend im wesentlichen aus einem Winkelhebel und dem Verbindungslenker ist kleinbauend, so daß nur ein geringer Platzbedarf zur Unterbringung erforderlich wird. Auch benötigen die Teile des Kurbelgetriebes aufgrund ihrer Kinematikpunkte nur einen geringen Freiraum für ihre Schwenkbewegungen.The crank gear for the boom, consisting essentially of an angle lever and the connecting link is small, so that only a small space is required for accommodation. The parts of the crank mechanism, because of their kinematic points, only need a little free space for their swiveling movements.

Das Kurbelgetriebe ist in der Weise ausgelegt, daß in der Transportstellung, d.h. wenn der Auslegerarm längsseits des Oberwagens liegt ein geringes Drehmoment herrscht und die abzustützenden Kräfte relativ klein sind, da in dieser Stellung keine wesentlichen Belastungen mehr auftreten. In den Arbeitsstellungen z.B. bei einer Arbeitszwischenstellung mit einem quer zur Fahrtrichtung ausgeschwenkten Auslegerarm (Fig.3) und in einer vorderen Arbeitsendstellung (Fig.1) wird ein annähernd gleiches Drehmoment erreicht. Zwischen diesen Arbeitsstellungen herrscht aufgrund der sich ändernden Hebellängen des Kurbelgetriebes ein größeres Drehmoment, aber die in den Drehachsen abzustützenden Kräfte bleiben in allen Arbeitsstellungen im wesentlichen gleich groß.The crank mechanism is designed in such a way that in the transport position, i.e. if the cantilever arm is alongside the superstructure there is a low torque and the forces to be supported are relatively small, since in this position there are no longer any significant loads. In the working positions e.g. In an intermediate work position with a cantilever arm swung out transversely to the direction of travel (Fig. 3) and in a front end-of-work position (Fig. 1), approximately the same torque is achieved. There is a greater torque between these working positions due to the changing lever lengths of the crank mechanism, but the forces to be supported in the axes of rotation remain essentially the same in all working positions.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is shown in the drawing and will be described in more detail below.

Es zeigen:Show it:

Fig.1Fig. 1
eine Draufsicht auf einen Bagger mit einer aus einem Kurbelgetriebe bestehenden Schwenkeinrichtung bei einer vorderen Arbeitsendstellung des Auslegerarmes, 2 shows a plan view of an excavator with a swivel device consisting of a crank mechanism in a front working end position of the cantilever arm,
Fig.2Fig. 2
eine Arbeitszwischenstellung mit in Fahrzeuglängsrichtung angeordnetem Auslegerarm, an intermediate work position with the extension arm arranged in the longitudinal direction of the vehicle,
Fig.3Fig. 3
eine Arbeitszwischenstellung mit in Fahrzeugquerrichtung angeordnetem Auslegerarm, an intermediate work position with a cantilever arm arranged in the transverse direction of the vehicle,
Fig.4Fig. 4
eine hintere Transportstellung des Auslegerarmes in zurückgeschwenkter abgelegter Position,a rear transport position of the cantilever arm in the swung-back, stored position,
Fig.5Fig. 5
eine Seitenansicht eines Auslegerschwenkbocks und a side view of a jib and
Fig.6Fig. 6
ein Diagramm über den Drehmomentverlauf der Schwenkeinrichtung in Abhängigkeit vom Verschwenkwinkel des Auslegerarmes. a diagram of the torque curve of the swivel device as a function of the swivel angle of the cantilever arm.

Ein Löffelbagger 1 umfaßt im wesentlichen einen Unterwagen 2 mit Fahrwerk und Rädern 3 sowie einen über einen Drehkranz als erste vertikale Drehachse zum Unterwagen 2 verschwenkbaren Oberwagen 4, in dem das Fahrerhaus 5 angeordnet ist. Mit dem Oberwagen 4 ist ein Auslegerarm 6 als Monoblockausleger über einen Auslegerschwenkbock 7 um eine zweite vertikal Drehachse 8 verschwenkbar verbunden.A backhoe 1 essentially comprises an undercarriage 2 with undercarriage and wheels 3 and an uppercarriage 4 which can be swiveled via a slewing ring as the first vertical axis of rotation to the undercarriage 2 and in which the driver's cab 5 is arranged. With the superstructure 4, a cantilever arm 6 is connected as a monoblock boom via a cantilever swivel bracket 7 so as to be pivotable about a second vertical axis of rotation 8.

Der Auslegerschwenkbock 7 ist mit einem Kurbelgetriebe 9 verbunden, daß über einen Hydraulikzylinder 10 angetrieben wird. Das Kurbelgetriebe 9 umfaßt im wesentlichen einen Winkelhebel 11, der um eine aufbaufeste dritte vertikale Drehachse 12 verschwenkbar ist. Der Winkelhebel 11 weist zwei Gelenkpunkte 13 und 14 auf, wobei an dem einen Gelenkpunkt 13 der Hydraulikzylinder 10 mit seiner Kolbenstange angreift und in dem weiteren Gelenkpunkt 14 ist ein Verbindungslenker 15 gelagert, der wiederum mit dem Auslegerschwenkbock 7 gelenkig in einem Lager 16 mit einer vertikalen Drehachse 17 verbunden ist.The boom pivot bracket 7 is connected to a crank mechanism 9 that is driven by a hydraulic cylinder 10. The crank mechanism 9 essentially comprises an angle lever 11 which can be pivoted about a fixed third vertical axis of rotation 12. The angle lever 11 has two articulation points 13 and 14, with the hydraulic cylinder 10 engaging with its piston rod at the one articulation point 13 and a connecting link 15 is mounted in the further articulation point 14, which in turn is articulated with the boom pivot bracket 7 in a bearing 16 with a vertical Axis of rotation 17 is connected.

Der Auslegerschwenkbock 7 mit dem Auslegerarm 6 ist von einer vorderen Arbeitsendstellung A (Fig.1) über Arbeitszwischenstellungen z.B. B und C (Fig.2 und 3) in eine Transportstellung D (Fig.4) verschwenkbar. In der Arbeitsstellung A steht der Auslegerschwenkbock 7 mit dem Auslegerarm 6 etwa unter einem Winkel von 30° zu einer parallel zur Längsmittelachse 18 durch die zweite Drehachse 8 verlaufenden Ebene X-X. Von dieser Arbeitsstellung A aus, ist der Auslegerarm 6 bis zur hinteren Arbeitsstellung C, bei der der Auslegerarm 6 quer zum Oberwagen 4 ausgerichtet ist, um die Drehachse 8 verschwenkbar.The boom swivel bracket 7 with the boom arm 6 is from a front working end position A (Fig. 1) via intermediate work positions e.g. B and C (Fig. 2 and 3) can be pivoted into a transport position D (Fig. 4). In working position A, the boom pivot bracket 7 with the boom arm 6 is approximately at an angle of 30 ° to a plane X-X running parallel to the longitudinal center axis 18 through the second axis of rotation 8. From this working position A, the cantilever arm 6 can be pivoted about the axis of rotation 8 up to the rear working position C, in which the cantilever arm 6 is oriented transversely to the superstructure 4.

Durch weiteres Verschwenken des Auslegerarmes 6 entgegen der Fahrtrichtung F nimmt der Auslegerarm 6 eine Transportstellung D ein. In dieser Stellung D liegt der Auslegerarm 6 mit Löffel längsseits des Oberwagens 4 und parallel zur Längsmittelachse 18 des Fahrzeugs 1.By further pivoting the cantilever arm 6 against the direction of travel F, the cantilever arm 6 assumes a transport position D. In this position D, the cantilever arm 6 with a spoon lies alongside the uppercarriage 4 and parallel to the longitudinal central axis 18 of the vehicle 1.

Um diese gewünschte Schwenkbewegung mit einem Winkel von annähernd 210° oder größer ohne zusätzliche Schwenkmotoren zu erreichen, muß das Kurbelgetriebe 9 in der vorderen Arbeitsendstellung A eine Lage wie in Fig. 1 dargestellt, einnehmen. Die Gelenkpunkte 13 und 14 des Winkelhebels 11 und der Anlenkpunkt bzw. die Drehachse 17 des Verbindungslenkers 15 am Auslegerschwenkbock 7 sowie die aufbaufeste vertikale Drehachse 12 des Winkelhebels 11 bilden die Eckpunkte eines gedachten Rechtecks R, was in strichpunktierten Linien in Fig. 1 näher dargestellt ist.In order to achieve this desired swivel movement with an angle of approximately 210 ° or larger without additional swivel motors, the crank mechanism must be used 9 in the front working end position A assume a position as shown in Fig. 1. The articulation points 13 and 14 of the angle lever 11 and the articulation point or the axis of rotation 17 of the connecting link 15 on the jib pivot bracket 7 and the vertical axis of rotation 12 of the angle lever 11, which is built up, form the corner points of an imaginary rectangle R, which is shown in more detail in broken lines in FIG. 1 .

Der Hydraulikzylinder 10 ist in der Weise zum Kurbelgetriebe 9 angestellt, daß die Längsachse 20 des Hydraulikzylinders 10 in einer senkrechten Ebene Z-Z liegt, in welcher der Gelenkpunkt 13 des Kurbelgetriebes 9 und benachbart zur Ebene, die Drehachse 17 des Verbindungslenkers 15 angeordnet ist.The hydraulic cylinder 10 is adjusted to the crank mechanism 9 in such a way that the longitudinal axis 20 of the hydraulic cylinder 10 lies in a vertical plane Z-Z, in which the pivot point 13 of the crank mechanism 9 and adjacent to the plane, the axis of rotation 17 of the connecting link 15 is arranged.

Der Hydraulikzylinder 10 ist - in bezug auf die Fahrtrichtung F - in einer schräg nach vorne und innen gerichteten Stellung angeordnet und unter einem spitzen Winkel a von etwa 45° zu Längsmittelachse 18 gelagert, wobei der aufbauseitige Anlenkpunkt 21 nahe der Außenwandung 22 des Oberwagens 4 liegt.The hydraulic cylinder 10 is arranged in relation to the direction of travel F in an obliquely forward and inward position and is mounted at an acute angle a of approximately 45 ° to the longitudinal central axis 18, the articulation point 21 on the body side being close to the outer wall 22 of the superstructure 4 .

Wie in Fig. 5 näher dargestellt ist, nimmt der Auslegerschwenkbock 7 zwischen Schenkeln 23 und 24 ein Horn 25 des Oberwagens 4 auf und wird über einen Bolzen 25, welcher die zweite Drehachse 8 bildet, befestigt. In einer weiteren Aufnahme 26 wird der Verbindungslenker 15 um die vertikale Achse 17 verdrehbar abgestützt. In einem Auge 27 des Auslegerschwenkbockes 7 greift ein Schwenkzylinder 28 für die vertikale Verstellung des Auslegerarmes 6 an. Das weitere Auge 29 dient zur Aufnahme des Auslegerarmes 6.As is shown in more detail in FIG. 5, the boom swivel bracket 7 receives a horn 25 of the superstructure 4 between the legs 23 and 24 and is fastened via a bolt 25, which forms the second axis of rotation 8. In a further receptacle 26, the connecting link 15 is supported rotatably about the vertical axis 17. A pivot cylinder 28 engages in an eye 27 of the boom pivot bracket 7 for the vertical adjustment of the boom arm 6. The further eye 29 serves to receive the extension arm 6.

Anhand des Diagramms gemäß Fig. 6 ist dargestellt, daß die Drehmomente um die vertikale Achse 8 des Auslegerschwenkbocks 7 in der Stellung A und C, d.h. in der vorderen Arbeitsendstellung A und in der hinteren Arbeitsendstellung C annähernd gleich groß sind und eine Erhöhung des Drehmoments in den dazwischenliegenden Arbeitsstellungen aufgrund der Kinematik des Kurbelgetriebes erfolgt. Die abzustützenden Lagerkräfte sind in den Arbeitsstellungen aufgrund der Ausbildung des Kurbelgetriebes etwa gleich groß.The diagram according to FIG. 6 shows that the torques about the vertical axis 8 of the boom pivot bracket 7 in the positions A and C, i.e. are approximately the same size in the front working end position A and in the rear working end position C and there is an increase in the torque in the intermediate working positions due to the kinematics of the crank mechanism. The bearing forces to be supported are approximately the same in the working positions due to the design of the crank mechanism.

Claims (8)

Bagger, insbesondere Löffelbagger mit einem auf einem Unterwagen um eine erste vertikale Achse verschwenkbaren Oberwagen, an dem über einen Auslegerschwenkbock ein Auslegerarm um eine zweite vertikale Drehachse verschwenkbar gehalten ist, die den Auslegerarm abstützend aufnimmt und mit dem Auslegerschwenkbock einer Schwenkeinrichtung verbunden ist, die einen unter Zwischenschaltung eines Lenkers mit dem Schwenkbock verbundenen Hydraulikzylinder umfaßt, dadurch gekennzeichnet, daß der Auslegerschwenkbock (7) mit Auslegerarm (6) über ein angetriebenes Kurbelgetriebe (9) von einer schräg zur Längsmittelachse (18) des Baggers (1) verlaufenden vorderen Arbeitsendstellung (A), um die zweite vertikale Drehachse (8) in eine - in bezug auf die Fahrtrichtung (F) - zurückgeschwenkte Transportstellung (D) verdrehbar ist, bei der der Auslegerarm (6) parallel zur Längsmittelachse (18) und seitlich des Oberwagens (4) angeordnet ist.Excavator, in particular a backhoe with a superstructure which can be pivoted about a first vertical axis on an undercarriage, on which a cantilever arm supports a cantilever arm that can be pivoted about a second vertical axis of rotation, which supports the cantilever arm and is connected to the cantilever pivot bracket of a swivel device, one under Interposition of a link comprising hydraulic cylinders connected to the swivel bracket, characterized in that the boom swivel bracket (7) with boom arm (6) via a driven crank mechanism (9) from a front working end position (A) which runs obliquely to the longitudinal center axis (18) of the excavator (1). to the second vertical axis of rotation (8) in a - in relation to the direction of travel (F) - pivoted back transport position (D), in which the cantilever arm (6) is arranged parallel to the longitudinal center axis (18) and to the side of the superstructure (4) is. Bagger nach Anspruch 1, dadurch gekennzeichnet, daß das Kurbelgetriebe (9) ein zwischen einem Verbindungslenker (15) und dem Hydraulikzylinder (10) angeordneten und um eine dritte vertikale Drehachse (12) verschwenkbaren Winkelhebel (11) umfaßt.Excavator according to Claim 1, characterized in that the crank mechanism (9) comprises an angle lever (11) which is arranged between a connecting link (15) and the hydraulic cylinder (10) and can be pivoted about a third vertical axis of rotation (12). Bagger nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, daß der Auslegerschwenkbock (7) mit dem Hydraulikzylinder (10) unter Zwischenschaltung eines zwei Gelenkpunkte (13 und 14) aufweisenden Winkelhebels (11) verbunden ist, wobei an dem einen Gelenkpunkt (13) eine Kolbenstange des Hydraulikzylinders (10) und an dem anderen Gelenkpunkt (14) der Verbindungslenker (15) angelenkt und mit dem Auslegerschwenkbock (7) verbunden ist.Excavator according to claims 1 or 2, characterized in that the jib swivel bracket (7) is connected to the hydraulic cylinder (10) with the interposition of an angle lever (11) having two articulation points (13 and 14), one of which is connected to one articulation point (13) Piston rod of the hydraulic cylinder (10) and at the other articulation point (14) of the connecting link (15) articulated and connected to the boom swivel bracket (7). Bagger nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Auslegerschwenkbock (7) in der vorderen Arbeitsendstellung (A) unter einem spitzen Winkel von etwa 30° zu einem parallel zur Längsmittelachse (18) und durch die zweite vertikale Drehachse (8) verlaufenden senkrechten Ebene X-X angeordnet ist und daß in der Transportstellung (D) der Auslegerschwenkbock (7) eine um > 200° verschwenkte hintere Endlage einnimmt.Excavator according to one or more of the preceding claims, characterized in that the jib swivel bracket (7) in the front working end position (A) at an acute angle of approximately 30 ° to one is arranged parallel to the longitudinal central axis (18) and through the second vertical axis of rotation (8) vertical plane XX and that in the transport position (D) the boom swivel bracket (7) assumes a rear end position pivoted by> 200 °. Bagger nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Gelenkpunkte (13 und 14) des Winkelhebels (11) und der Anlenkpunkt (Drehachse 17) des Verbindungslenkers (15) am Auslegerschwenkbock (7) sowie die dritte vertikale Drehachse (12) des Winkelhebels (11) in der vorderen Arbeitsendstellung A (Fig.1) Eckpunkte eines gedachten Rechtecks (R) darstellen, und daß der Anlenkpunkt (Drehachse 17) des Verbindungslenkers (15) unmittelbar benachbart zu einer durch die Längsachse (20) des Hydraulikzylinders (10) verlaufenden senkrechten Ebene (Z-Z) liegt.Excavator according to one or more of the preceding claims, characterized in that the articulation points (13 and 14) of the angle lever (11) and the articulation point (axis of rotation 17) of the connecting link (15) on the boom swivel bracket (7) and the third vertical axis of rotation (12) of the angle lever (11) in the front working end position A (Fig.1) represent corner points of an imaginary rectangle (R), and that the articulation point (axis of rotation 17) of the connecting link (15) is directly adjacent to one through the longitudinal axis (20) of the hydraulic cylinder ( 10) vertical plane (ZZ). Bagger nach Anspruch 5, dadurch gekennzeichnet, daß der Hydraulikzylinder (10) - in bezug auf die Fahrtrichtung (F) - eine schräg nach vorn und innen gerichtete Schrägstellung unter einem spitzen Winkel von etwa α = 45° zur Längsmittelachse (18) aufweist und daß der Anlenkpunkt (21) des Hydraulikzylinders (10) nahe der Aussenwandung (22) des Oberwagens (4) liegt.Excavator according to claim 5, characterized in that the hydraulic cylinder (10) - with respect to the direction of travel (F) - has an obliquely forward and inward inclined position at an acute angle of approximately α = 45 ° to the longitudinal central axis (18) and in that the articulation point (21) of the hydraulic cylinder (10) is close to the outer wall (22) of the superstructure (4). Bagger nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die abzustützenden Kräfte an den aufbauseitig gehaltenen Lagern in den einzelnen Schwenkstellungen (A bis C) sowie in den Schwenkzwischenstellungen etwa gleich groß sind, wobei die Drehmomente um die vertikale Achse (8) in den Stellungen (A und C) annähernd gleich sind.Excavator according to one or more of the preceding claims, characterized in that the forces to be supported on the bearings held on the superstructure are approximately the same in the individual pivot positions (A to C) and in the intermediate pivot positions, the torques about the vertical axis (8) in the positions (A and C) are approximately the same. Bagger nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Auslegerschwenkbock (7) über zwei Schenkel (23, 24) an einem Horn (30) des Oberwagens (4) mittels eines Bolzens (25) gehalten ist, der die zweite vertikale Drehachse (8) bildet und daß eine weitere Aufnahme (26) am Auslegerschwenkbock (7) zur Befestigung des Verbindungslenkers (15) vorgesehen ist.Excavator according to one or more of the preceding claims, characterized in that the jib swivel bracket (7) is held by two legs (23, 24) on a horn (30) of the superstructure (4) by means of a bolt (25) which holds the second vertical Axis of rotation (8) forms and that a further receptacle (26) is provided on the boom swivel bracket (7) for fastening the connecting link (15).
EP90122250A 1990-02-05 1990-11-22 Earth moving machine, in particular a bucket excavator Expired - Lifetime EP0440895B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4003325 1990-02-05
DE4003325A DE4003325C2 (en) 1990-02-05 1990-02-05 Excavator

Publications (2)

Publication Number Publication Date
EP0440895A1 true EP0440895A1 (en) 1991-08-14
EP0440895B1 EP0440895B1 (en) 1995-01-11

Family

ID=6399436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122250A Expired - Lifetime EP0440895B1 (en) 1990-02-05 1990-11-22 Earth moving machine, in particular a bucket excavator

Country Status (5)

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EP (1) EP0440895B1 (en)
JP (1) JPH04213629A (en)
AT (1) ATE117034T1 (en)
DE (2) DE4003325C2 (en)
NO (1) NO302130B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0892115A1 (en) * 1996-03-12 1999-01-20 Kabushiki Kaisha Takeuchi Seisakusho Power shovel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06294143A (en) * 1993-04-07 1994-10-21 Daito:Kk Power showvel
US6409457B1 (en) 1999-10-15 2002-06-25 George Korycan Work vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1312199A (en) * 1961-09-29 1962-12-14 Device for rotating the trunk of cranes, excavators and the like
US3395812A (en) * 1966-03-21 1968-08-06 Wain Roy Corp Boom swing system
US3452882A (en) * 1968-03-18 1969-07-01 Massey Ferguson Inc Swing mechanism for backhoes
FR1591016A (en) * 1967-11-08 1970-04-20
DE2757968B1 (en) * 1977-12-24 1979-04-05 Schaeff Kg Maschfab Karl Mobile spoon excavator
DE3425838A1 (en) * 1983-07-14 1985-01-31 Karl Schaeff GmbH & Co, Maschinenfabrik, 7183 Langenburg Mechanical shovel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1594043A (en) * 1968-12-04 1970-06-01
JPS62148725A (en) * 1985-12-23 1987-07-02 Kubota Ltd Full-slewing type back hoe working vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1312199A (en) * 1961-09-29 1962-12-14 Device for rotating the trunk of cranes, excavators and the like
US3395812A (en) * 1966-03-21 1968-08-06 Wain Roy Corp Boom swing system
FR1591016A (en) * 1967-11-08 1970-04-20
US3452882A (en) * 1968-03-18 1969-07-01 Massey Ferguson Inc Swing mechanism for backhoes
DE2757968B1 (en) * 1977-12-24 1979-04-05 Schaeff Kg Maschfab Karl Mobile spoon excavator
DE3425838A1 (en) * 1983-07-14 1985-01-31 Karl Schaeff GmbH & Co, Maschinenfabrik, 7183 Langenburg Mechanical shovel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0892115A1 (en) * 1996-03-12 1999-01-20 Kabushiki Kaisha Takeuchi Seisakusho Power shovel

Also Published As

Publication number Publication date
JPH04213629A (en) 1992-08-04
NO910415L (en) 1991-08-06
DE4003325A1 (en) 1991-08-14
DE4003325C2 (en) 1994-07-07
ATE117034T1 (en) 1995-01-15
EP0440895B1 (en) 1995-01-11
NO910415D0 (en) 1991-02-04
DE59008257D1 (en) 1995-02-23
NO302130B1 (en) 1998-01-26

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