EP0640724A2 - Machine de chantier, en particulier véhicule excavateur - Google Patents

Machine de chantier, en particulier véhicule excavateur Download PDF

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Publication number
EP0640724A2
EP0640724A2 EP94112370A EP94112370A EP0640724A2 EP 0640724 A2 EP0640724 A2 EP 0640724A2 EP 94112370 A EP94112370 A EP 94112370A EP 94112370 A EP94112370 A EP 94112370A EP 0640724 A2 EP0640724 A2 EP 0640724A2
Authority
EP
European Patent Office
Prior art keywords
piston
arm piece
cylinder unit
construction machine
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.)
Granted
Application number
EP94112370A
Other languages
German (de)
English (en)
Other versions
EP0640724B1 (fr
EP0640724A3 (fr
Inventor
Ing. Luis Haringer
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.)
Macmoter SpA
Original Assignee
Macmoter SpA
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 Macmoter SpA filed Critical Macmoter SpA
Publication of EP0640724A2 publication Critical patent/EP0640724A2/fr
Publication of EP0640724A3 publication Critical patent/EP0640724A3/fr
Application granted granted Critical
Publication of EP0640724B1 publication Critical patent/EP0640724B1/fr
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
    • E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/301—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom with more than two arms (boom included), e.g. two-part boom with additional dipper-arm
    • 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
    • E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/32—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes

Definitions

  • the invention relates to a construction machine, in particular an excavator vehicle, with a frame and a boom which has an inner arm piece articulated on the frame side and an outer arm piece carrying the work tool and optionally at least one further middle arm piece, each arm piece being articulated by means of an articulated arm associated therewith Piston-cylinder unit relative to the frame or the arm piece adjacent to the frame is pivotable about an axis of articulation.
  • Such a construction machine with a boom of individually hydraulically pivotable arm pieces is known, both as a wheeled vehicle with a digging spoon as a working tool (DE 41 24 461 C) and as a tracked vehicle with a loading shovel as a working tool (DE 24 11 051 C).
  • each arm piece has both at its inner end and at its outer end a hinge axis, which connects it to the arm piece or mounting bracket that is adjacent on the frame side and to the arm piece or tool that is adjacent to the tool.
  • each arm piece points for attaching the piston-cylinder units on two articulation axes, one in which the piston-cylinder unit engages to pivot itself, and one from which the piston-cylinder unit starts to pivot the arm piece or tool adjacent to the tool.
  • the piston-cylinder units can each be arranged in the vertical central plane of the boom or laterally offset next to the arm piece in question, possibly in a double design symmetrical to the vertical central plane of the boom.
  • the piston-cylinder units Since the pivoting of adjacent arm pieces by means of the piston-cylinder unit acting between them to ensure a force transmission arm requires a triangular arrangement of the articulation axis between the two arm pieces and the two articulation axes of the piston-cylinder unit, the piston-cylinder units have so far been arranged so that they are at least largely extend outside of the arm pieces, i.e. in the case of the arrangement in the vertical boom center plane below or above the arm pieces, insofar as these assume a more or less horizontal position or in front of or behind the arm pieces insofar as these assume a more or less vertical position. This leads to largely exposed piston-cylinder units even if they do not run laterally next to the arm pieces but in their vertical center plane.
  • the piston-cylinder units are poorly protected, so that there is a risk of undesirable transverse forces acting on the piston-cylinder units when hitting obstacles in view of the rough construction site operation in connection with carelessness during operation. Accordingly, damage to the piston-cylinder units can hardly be avoided, even if these piston-cylinder units are designed to be particularly stable, but this also represents an undesirable additional effort.
  • the invention has for its object to improve the construction machine in this regard and the piston-cylinder units or at least one of them without significant additional effort, in particular to protect the most vulnerable, so that damage or bending of the piston-cylinder unit are largely excluded.
  • At least one piston-cylinder unit is arranged entirely or predominantly within the associated arm piece.
  • an excavator vehicle 1 which is equipped with four wheels 2 and has a chassis frame 3, on which a driver's cab 5 is mounted by means of a slewing ring 4.
  • a housing 6 At the rear of the driver's cab 5 is a housing 6 provided that receives the traction drive and the hydraulic devices and control devices for the excavator vehicle 1.
  • a connector 7 At the front of the driver's cab there is a connector 7 on which a mounting bracket 8 is attached.
  • a shield 11 is attached above the links 9 and 10, which can be raised and lowered by means of a piston-cylinder unit 12. In the position of the shield 11 according to FIG. 1 depressed on the road surface 13, the excavator vehicle 1 is given a firm stand in order to be able to carry out the intended excavation work.
  • a boom 14 is connected to the mounting bracket 8 and is composed of an inner arm piece 15, a middle arm piece 16 and an outer arm piece 17.
  • the work tool 18, in the illustrated embodiment a digging spoon, is connected to the latter.
  • the mounting bracket 8, the arm pieces 15 to 17 and the working tool 18 are connected to one another by horizontal articulated axes 19, 20, 21 and 22.
  • An inner piston-cylinder unit 23, a middle piston-cylinder unit 24 and an outer piston-cylinder unit 25 are provided for the individual pivoting of the individual arm pieces.
  • Another piston-cylinder unit 26 serves to pivot the digging spoon 18.
  • Each piston-cylinder unit 23 to 26 has a cylinder 27 articulated at the closed end on the vehicle side and a piston rod 28 which can be extended therefrom and which is articulated more at the tool end at its free end.
  • the cylinder 27 of the inner piston-cylinder unit 23 is articulated on a bearing projection 29 projecting from the mounting bracket 8, while the piston rod 28 of the piston-cylinder unit 26 is articulated centrally on a toggle link 30, the ends of which are on the one hand on the outer arm piece 17 and on the other hand on the digging spoon 18 are articulated.
  • Each arm piece thus has two articulation axes 31 and 32 or 33 and 34 or 35 and 36, on which the piston rod 28 of the associated piston-cylinder unit 23 to 25 engages or the Cylinder 27 of the subsequent piston-cylinder unit 24 to 26 is connected.
  • the middle piston-cylinder unit 24 runs within the middle arm piece 16, which is designed with a closed box profile, only the cylinder end articulated on the inner arm piece 15 in the articulation axis 32 protruding from the middle arm piece 16.
  • the articulation axis 33 of the middle piston-cylinder unit 24 is closer to the articulation axis 21 between the middle arm piece 16 and the outer arm piece 17 than at the articulation axis 20 between the inner arm piece 15 and the middle arm piece 16.
  • the middle arm piece 16 which receives the middle piston-cylinder unit 24, has at its frame-side end a pair of lateral bearing plates 37, which extend approximately transversely to the longitudinal axis of the middle arm piece 16 and beyond and beyond it the ends of the hinge axis 20 and the pivot axis 34.
  • the middle arm piece 16 assumes an essentially vertical position during the digging work and thereby penetrates the road surface 13 (the earth's surface). Therefore, there is an increased risk of the boom 14 colliding with obstacles in the region of the middle arm piece 16.
  • the piston-cylinder unit 24, and in particular its extended piston rod 28 extends within this area, it is largely protected against damage from corresponding external influences, since it is received and enclosed by the middle arm piece 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Shovels (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
EP94112370A 1993-08-24 1994-08-08 Machine de chantier, en particulier véhicule excavateur Expired - Lifetime EP0640724B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4328449A DE4328449A1 (de) 1993-08-24 1993-08-24 Baumaschine, insbesondere Baggerfahrzeug
DE4328449 1993-08-24

Publications (3)

Publication Number Publication Date
EP0640724A2 true EP0640724A2 (fr) 1995-03-01
EP0640724A3 EP0640724A3 (fr) 1995-07-19
EP0640724B1 EP0640724B1 (fr) 1999-10-27

Family

ID=6495908

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94112370A Expired - Lifetime EP0640724B1 (fr) 1993-08-24 1994-08-08 Machine de chantier, en particulier véhicule excavateur

Country Status (4)

Country Link
EP (1) EP0640724B1 (fr)
AT (1) ATE186089T1 (fr)
DE (2) DE4328449A1 (fr)
NO (1) NO943011L (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2208827A3 (fr) * 2009-01-16 2014-04-23 Kobelco Construction Machinery Co. Ltd. Flèche d'un engin de travail

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057494A (en) * 1959-01-30 1962-10-09 Wain Roy Corp Excavating apparatus
US3666124A (en) * 1970-10-15 1972-05-30 Wain Roy Lifting and excavating apparatus
GB2082144A (en) * 1980-04-09 1982-03-03 Caterpillar Tractor Co Load carrying structure and method of manufacture therefor
DE8512238U1 (de) * 1985-04-25 1985-08-14 O & K Orenstein & Koppel Ag, 1000 Berlin Mobilbagger
DE3575755D1 (de) * 1985-12-23 1990-03-08 Komatsu Mfg Co Ltd Vorrichtung zum antreiben des arbeitswerkzeuges eines baggers.
DE9003519U1 (de) * 1990-03-27 1990-07-12 Atlas Weyhausen GmbH, 2870 Delmenhorst Ausleger für einen Löffelbagger od.dgl.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2208827A3 (fr) * 2009-01-16 2014-04-23 Kobelco Construction Machinery Co. Ltd. Flèche d'un engin de travail

Also Published As

Publication number Publication date
NO943011D0 (no) 1994-08-15
EP0640724B1 (fr) 1999-10-27
DE4328449A1 (de) 1995-03-02
ATE186089T1 (de) 1999-11-15
EP0640724A3 (fr) 1995-07-19
DE59408858D1 (de) 1999-12-02
NO943011L (no) 1995-02-27

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