EP0640724B1 - Machine de chantier, en particulier véhicule excavateur - Google Patents

Machine de chantier, en particulier véhicule excavateur Download PDF

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Publication number
EP0640724B1
EP0640724B1 EP94112370A EP94112370A EP0640724B1 EP 0640724 B1 EP0640724 B1 EP 0640724B1 EP 94112370 A EP94112370 A EP 94112370A EP 94112370 A EP94112370 A EP 94112370A EP 0640724 B1 EP0640724 B1 EP 0640724B1
Authority
EP
European Patent Office
Prior art keywords
piston
arm portion
cylinder unit
construction machine
machine according
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
EP94112370A
Other languages
German (de)
English (en)
Other versions
EP0640724A3 (fr
EP0640724A2 (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 Excavator vehicle, with a frame and a boom, the one inner arm piece articulated on the frame side and a working tool load-bearing outer arm piece and articulated piston-cylinder units for individual pivoting of the arm pieces and of the working tool opposite the frame or the frame side has adjacent arm piece, at least one piston-cylinder unit entirely or predominantly within a hollow profile having arm piece is arranged.
  • a construction machine with a single hydraulic boom pivotable arm pieces is known, both as Wheeled vehicle with a digging spoon as a working tool (DE 41 24 461 C) as a tracked vehicle with a loading shovel as a working tool (DE 24 11 051 C).
  • each arm piece points both at its inner end and at its outer end a hinge axis that it with the frame adjacent Arm piece or extension bracket and with the neighboring one on the tool side Connect arm piece or tool.
  • each arm piece points two articulation axes for attaching the piston-cylinder units on, one in the the piston-cylinder unit to his attacks own pivoting, and one from which the piston-cylinder unit for swiveling the neighboring tool Arm piece or tool runs out.
  • the piston-cylinder units each in the vertical central plane of the Boom arranged or laterally offset next to the relevant one Arm piece must be arranged, possibly in a double version symmetrical to the vertical center plane of the boom.
  • the piston-cylinder units are poorly protected, so that there is a risk that, with regard to the rough construction site operation in connection with carelessness the operation to undesirable shear forces on the Piston-cylinder units come into contact with obstacles. Corresponding damage to the piston-cylinder units hard to avoid even if these piston-cylinder units are particularly stable, but what already represents an undesirable additional effort.
  • the boom is only made up of two separately pivotable arm pieces.
  • the bending of the inner arm piece results in a ratio comparatively short range to arm length overall.
  • the invention is based, so the task of the construction machine improve that with the effort corresponding maximum range Damage or bending of the piston-cylinder units especially in the most vulnerable area excluded are.
  • an excavator vehicle 1 is provided with four Is equipped with wheels 2 and has a chassis frame 3, on which a driver's cab 5 is mounted by means of a slewing ring 4 is.
  • a housing 6 At the rear of the driver's cab 5 is a housing 6 provided that the travel drive as well as the hydraulic devices and control devices for the excavator vehicle 1 records.
  • a shield 11 is attached by means of a piston-cylinder unit 12 can be raised and lowered.
  • the excavator vehicle 1 is given a fixed stand, provided for To be able to carry out dredging.
  • a boom 14 is connected to the mounting bracket 8 consists of an inner arm piece 15, a middle arm piece 16 and an outer arm piece 17.
  • the latter is the working tool 18, in the illustrated embodiment a digging spoon, attached.
  • the extension bracket 8, the arm pieces 15 to 17 and the working tool 18 are through horizontal hinge axes 19, 20, 21 and 22 connected together.
  • an inner piston-cylinder unit 23 For individual pivoting of the individual arm pieces an inner piston-cylinder unit 23, a middle piston-cylinder unit 24 and an outer piston-cylinder unit 25 are provided. Another serves to pivot the digging spoon 18 Piston-cylinder unit 26.
  • Each piston-cylinder unit 23 to 26 has one closed End more vehicle 27 articulated cylinders and one from this extendable piston rod 28 on its free End is more articulated on the tool side.
  • Each arm piece thus has two articulation axes 31 and 32 and 33, respectively and 34 or 35 and 36 on which the piston rod 28 of the associated Piston-cylinder unit attacks 23 to 25 or the Cylinder 27 of the subsequent piston-cylinder unit 24 to 26 connected.
  • the middle piston-cylinder unit 24 runs within the middle with closed box profile Arm piece 16, with only that on the inner arm piece 15 in the articulation axis 32 articulated cylinder end from the middle Arm piece 16 protrudes.
  • the articulation axis 33 of the middle piston-cylinder unit 24 is closer to the hinge axis 21 between the middle arm piece 16 and the outer arm piece 17 than at the hinge axis 20 between the inner arm piece 15 and the middle arm piece 16.
  • the middle arm piece points 16 which receives the middle piston-cylinder unit 24, at its end on the frame side a pair of side bearing plates 37 on, which is approximately transverse to the longitudinal axis of the middle Arm piece 16 and beyond and extend at their ends carry the hinge axis 20 and the articulation axis 34.
  • the middle Arm piece 16 occupies a substantially vertical position and penetrates the road surface 13 (the surface of the earth). Therefore exists in the area of the middle arm piece 16 in an increased Measure the risk of the boom 14 colliding with obstacles. Although the piston-cylinder unit 24 and in particular its extended piston rod 28 extends within this range, it is protected from damage by appropriate external Effects largely protected as they come from the middle arm piece 16 is recorded and enclosed.

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)

Claims (8)

  1. Machine de chantier, en particulier véhicule excavateur, avec un châssis (3) et un bras articulé (14), qui présente un élément de bras intérieur (15), articulé du côté châssis, et un élément de bras extérieur (17), portant l'outil de travail (18), ainsi que des unités à piston et cylindre (23 a 25) articulées, destinées à produire un pivotement individuel des éléments de bras (15 à 17) et de l'outil de travail (18) par rapport au châssis (3) et/ou un élément de bras (15 à 17) voisin, côté châssis, au moins une unité à piston et cylindre (24) étant disposée complètement ou majoritairement à l'intérieur d'un élément de bras (16) présentant un profil creux, caractérisée en ce que le bras articulé (14) présente un élément de bras médian (16), articulé entre l'élément de bras intérieur (15) et l'élément extérieur (17), ayant un profil creux, recevant l'ensemble à piston et cylindre (24) destiné à son pivotement.
  2. Machine de chantier selon la revendication 1, caractérisée en ce que l'unité à piston et cylindre (24) logée par l'élément de bras (16) est articulée dans la zone de la moitié extérieure ou côté outil de l'élément de bras (16), sur celui-ci.
  3. Machine de chantier selon la revendication 1 ou 2, caractérisée en ce que chaque élément de bras (16) recevant une unité à piston et cylindre (24) présente un profil creux en forme de caisson.
  4. Machine de chantier selon l'une des revendications 1 à 3, caractérisée en ce que l'unité à piston et cylindre (24) logée par l'élément de bras (16) s'étend avec son axe, entre l'axe d'articulation (20), situé côté châssis, de l'élément de bras (16) et l'axe d'articulation (34) de l'élément à piston et cylindre (25) destiné au pivotement de l'élément de bras (17) voisin cote outil.
  5. Machine de chantier selon l'une des revendications 4, caractérisée en ce que, lorsque l'élément de bras (16) recevant l'unité à piston et cylindre (24) est orienté sensiblement horizontalement, l'axe d'articulation (20) situé côté châssis est disposé au-dessous et l'axe d'articulation (34) de l'unité à piston et cylindre (25) destiné au pivotement de l'élément de bras (17) voisin côté outil est disposé au-dessus de l'axe de l'unité à piston et cylindre (24) logé par l'élément de bras (16).
  6. Machine de chantier selon la revendication 4 ou 5, caractérisée en ce que l'élément de bras (15) recevant l'unité à piston et cylindre (24) présente, côté châssis, deux tôles de palier (37) latérales s'étendant transversalement, entre lesquelles s'étendent l'axe d'articulation (20), destiné à l'élément de bras (15) voisin côté châssis, et l'axe d'articulation (34) de l'unité à piston et cylindre (25) prévu pour le pivotement de l'élément de bras (17) voisin côté outil.
  7. Machine de chantier selon l'une des revendications 1 à 6, caractérisée en ce que le bras articulé (14), lorsque les unités à piston et cylindre (23 à 25) sont rétractées, prend une position sensiblement rectiligne et, lorsque les unités à piston et cylindre (23 à 24) sont déployées, il prend une position coudée.
  8. Machine de chantier selon l'une des revendications 1 à 7, caractérisée en ce que l'élément de bras intérieur (15), lorsque l'unité à piston et cylindre intérieure (23) est rétractée, fait saillie sensiblement horizontalement et, lorsque l'unité à piston et cylindre intérieure (23) est déployée, il fait saillie sensiblement verticalement.
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 EP0640724A2 (fr) 1995-03-01
EP0640724A3 EP0640724A3 (fr) 1995-07-19
EP0640724B1 true 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)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4798228B2 (ja) * 2009-01-16 2011-10-19 コベルコ建機株式会社 作業機械のブーム

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
WO1981002884A1 (fr) * 1980-04-09 1981-10-15 Caterpillar Tractor Co Structure porte-charge et son procede de fabricati0n
DE8512238U1 (de) * 1985-04-25 1985-08-14 O & K Orenstein & Koppel Ag, 1000 Berlin Mobilbagger
EP0226657B1 (fr) * 1985-12-23 1990-01-31 Kabushiki Kaisha Komatsu Seisakusho Dispositif pour manoeuvrer un outil d'une excavatrice
DE9003519U1 (de) * 1990-03-27 1990-07-12 Atlas Weyhausen GmbH, 2870 Delmenhorst Ausleger für einen Löffelbagger od.dgl.

Also Published As

Publication number Publication date
DE59408858D1 (de) 1999-12-02
EP0640724A3 (fr) 1995-07-19
EP0640724A2 (fr) 1995-03-01
ATE186089T1 (de) 1999-11-15
NO943011D0 (no) 1994-08-15
NO943011L (no) 1995-02-27
DE4328449A1 (de) 1995-03-02

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