EP0440895B1 - Bagger, insbesondere Löffelbagger - Google Patents

Bagger, insbesondere Löffelbagger Download PDF

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Publication number
EP0440895B1
EP0440895B1 EP90122250A EP90122250A EP0440895B1 EP 0440895 B1 EP0440895 B1 EP 0440895B1 EP 90122250 A EP90122250 A EP 90122250A EP 90122250 A EP90122250 A EP 90122250A EP 0440895 B1 EP0440895 B1 EP 0440895B1
Authority
EP
European Patent Office
Prior art keywords
axis
jib
rotational axis
end position
arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90122250A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0440895A1 (de
Inventor
Reinhard Dipl.-Ing. Stenger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0440895A1 publication Critical patent/EP0440895A1/de
Application granted granted Critical
Publication of EP0440895B1 publication Critical patent/EP0440895B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/38—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 according to the preamble of claim 1.
  • the boom pivot bracket of a superstructure oriented 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 cantilever arm with the bucket articulated on the jib swivel bracket can be swiveled on the swivel bracket into a position alongside the superstructure by means of a rotary motor.
  • additional means such as the rotary motor is required to pivot the cantilever arm into a transport position.
  • an excavator which has a swivel device connected to a jib swivel bracket and consisting of a crank mechanism, which comprises a lever with a connected handlebar, a hydraulic cylinder acting in the connection point between the handlebar and lever.
  • the cantilever arm of this excavator can not be placed alongside the uppercarriage in a transport position due to the design of the swivel device, so that road operation at relatively high speed does not appear possible due to the poor visibility.
  • an excavator is known from DE-U 83 20 291, which has a pivotable superstructure and whose extension arm can be rotated into a working position and into a transport position via a pivot bearing.
  • 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 mechanism 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 prerequisites for fast road travel are 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 only require a small amount of free space for their pivoting movements due to their kinematic points.
  • 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 working end position (Fig. 1), approximately the same torque is achieved. Between these working positions there is a greater torque 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 pivoted to the undercarriage 2 via a slewing ring as the first vertical axis of rotation and in which the cab 5 is arranged.
  • a cantilever arm 6 is connected to the superstructure 4 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 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 swivel bracket 7 as well as 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 .
  • 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 ⁇ 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 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 swivel 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 the torque in the intermediate working positions increases due to the kinematics of the crank mechanism.
  • the bearing forces to be supported are approximately the same size in the working positions due to the design of the crank mechanism.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)
  • Shovels (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Surgical Instruments (AREA)
  • Toys (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Earth Drilling (AREA)
EP90122250A 1990-02-05 1990-11-22 Bagger, insbesondere Löffelbagger Expired - Lifetime EP0440895B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4003325 1990-02-05
DE4003325A DE4003325C2 (de) 1990-02-05 1990-02-05 Bagger

Publications (2)

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

Family

ID=6399436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122250A Expired - Lifetime EP0440895B1 (de) 1990-02-05 1990-11-22 Bagger, insbesondere Löffelbagger

Country Status (5)

Country Link
EP (1) EP0440895B1 (no)
JP (1) JPH04213629A (no)
AT (1) ATE117034T1 (no)
DE (2) DE4003325C2 (no)
NO (1) NO302130B1 (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06294143A (ja) * 1993-04-07 1994-10-21 Daito:Kk パワーショベル
JPH09242104A (ja) * 1996-03-12 1997-09-16 Takeuchi Seisakusho:Kk パワーショベル
US6409457B1 (en) 1999-10-15 2002-06-25 George Korycan Work vehicle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1312199A (fr) * 1961-09-29 1962-12-14 Dispositif pour la rotation du tronc des grues, excavateurs et similaires
US3395812A (en) * 1966-03-21 1968-08-06 Wain Roy Corp Boom swing system
DE1634994C3 (de) * 1967-11-08 1974-05-02 Karl Schaeff Kg Maschinenfabrik, 7183 Langenburg Fahrbarer Löffelbagger
US3452882A (en) * 1968-03-18 1969-07-01 Massey Ferguson Inc Swing mechanism for backhoes
FR1594043A (no) * 1968-12-04 1970-06-01
DE2757968C2 (de) * 1977-12-24 1979-11-22 Karl Schaeff Kg Maschinenfabrik, 7183 Langenburg Fahrbarer Löffelbagger
EP0131939B1 (de) * 1983-07-14 1988-04-06 Karl Schaeff GmbH & Co. Fahrbarer hydraulischer Löffelbagger
JPS62148725A (ja) * 1985-12-23 1987-07-02 Kubota Ltd 全旋回型バックホウ作業車

Also Published As

Publication number Publication date
DE4003325A1 (de) 1991-08-14
EP0440895A1 (de) 1991-08-14
NO302130B1 (no) 1998-01-26
DE59008257D1 (de) 1995-02-23
DE4003325C2 (de) 1994-07-07
JPH04213629A (ja) 1992-08-04
NO910415D0 (no) 1991-02-04
ATE117034T1 (de) 1995-01-15
NO910415L (no) 1991-08-06

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