EP0278571B1 - Dispositif de raccordement d'un outil aux bras pivotants d'un engin de terrassement ou similaire - Google Patents

Dispositif de raccordement d'un outil aux bras pivotants d'un engin de terrassement ou similaire Download PDF

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Publication number
EP0278571B1
EP0278571B1 EP88200220A EP88200220A EP0278571B1 EP 0278571 B1 EP0278571 B1 EP 0278571B1 EP 88200220 A EP88200220 A EP 88200220A EP 88200220 A EP88200220 A EP 88200220A EP 0278571 B1 EP0278571 B1 EP 0278571B1
Authority
EP
European Patent Office
Prior art keywords
connecting piece
coupling
tool
locking member
cavity
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
EP88200220A
Other languages
German (de)
English (en)
Other versions
EP0278571A1 (fr
Inventor
Dirk De Haan
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.)
METHOLD 'S-HERTOGENBOSCH B.V. TE 'S-HERTOGENBOSCH.
Original Assignee
Metaalwarenfabriek A P Verachtert BV
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 Metaalwarenfabriek A P Verachtert BV filed Critical Metaalwarenfabriek A P Verachtert BV
Priority to AT88200220T priority Critical patent/ATE57404T1/de
Publication of EP0278571A1 publication Critical patent/EP0278571A1/fr
Application granted granted Critical
Publication of EP0278571B1 publication Critical patent/EP0278571B1/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
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3627—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a longitudinal locking element
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated

Definitions

  • the invention relates to a device for coupling a tool to pivoting arms of an earthmoving machine or the like, wherein the device comprises a connecting piece, which is provided with coupling ears for pivotally coupling the connecting piece to the arms of the machine, at least one locking member displaceable in its longitudinal direction by means of an adjusting means provided on the connecting piece, and with a coupling bar extending transversely to the longitudinal direction of the locking member, said coupling bar fitting in a cavity bounded by a part of the tool, said tool being further provided with a recess for accommodating the end of the locking member remote from the coupling bar, said end of the coupling member being wedge shaped such that when the end of the locking member is pressed into the recess upon coupling the connecting piece to the tool the coupling bar is pressed into the cavity and the part of the connecting piece located near the end of the locking member is pushed in the direction of the tool.
  • the connecting piece and the tool are provided with wedge faces, which bear against each other in the position where the connecting piece is attached to the tool and which are orientated such that when the wedge-shaped locking member is driven into the recess the wedge faces are pressed together and the connecting piece is pushed in the direction of the cavity accommodating the coupling bar.
  • the cavity which accomodates the coupling bar having a round section, has an unround section along, at least part of its circumference, such that when the coupling bar is located in the cavity the coupling bar butts against two longitudinal boundary lines in the cavity, the size of whose crosssection gradually decreases from said longitudinal boundary lines in a direction remote from the connecting piece.
  • the connecting piece 1 illustrated in the figs 1-4 comprises an upper coupling bar 2, having a round section, and a lower bar 3, extending parallel to the bar 2, said bar 3 being a little shorter than the bar 2. Near their centres the two bars 2 and 3 are mutually connected by means of a pair of plate-shaped parts 4 and 5 extending perpendicularly to the bars 2 and 3.
  • the bars 2 and 3 are further mutually connected by stri-shaped parts 6, 7, and 8, 9 respectively extending parallel to said plate-shaped parts 4 and 5.
  • the ends of the bar 3 are furthermore connected to the bar 2 by means of plate-shaped parts or coupling ears 10 and 11 extending parallel to the plate-shaped parts 4 and 5.
  • plate-shaped parts or coupling ears 12 and 13 extending parallel to the plate-shaped parts 10 and 11, whereby the plate-shaped parts 10-13 all have the same shape.
  • the bottom ends of the plate-shaped parts 10, 12, and 11,13 respectively are mutually connected by connecting blocks 14, 15 respectively.
  • holes 16 being in line, for passing through pins by means of which the free ends of arms of an earthmoving machine, not shown, such as e.g. a shovel loader or the like, may be coupled such, that one end of an arm is located between the plates 10 and 12 and is coupled to said plates by means of a pivot pin, and the end of an other arm is located between the plates 11 and 13 and is coupled to said plates 11 and 13 by means of a pivot pin.
  • Holes 17 are provided in the two plates 4 and 5 at some distance above the holes 16, seen in side view (fig 2), through which holes 17 a pin may be passed in order to pivotally couple the end of a further arm of said earthmoving machine located between the plates 4 and 5 to the connecting piece 1.
  • a hydraulic setting cylinder 18 whose casing at its bottom end is pivotally coupled to the connecting piece by means of a pivot pin 18'.
  • the free end of the piston rod 19 of the setting cylinder 18 is pivotally coupled to a yoke 20 by means of a pin 19' extending parallel to the pin 18'.
  • the yoke 20 extends through lotted holes 21 and 22 provided in the plate shaped parts 4 and 5 and in the strip-shaped parts 6 and 9, and the ends of the yoke 20 are coupled to the upper ends of locking members 24 by means of pins 23 extending parallel to the pin 19', said locking members 24 being arranged displaceably in their longitudinal direction between guide plates 25 and 26, which are provided between the plate-shaped parts 6, 7, and 8, 9 respectively.
  • a tool e.g. an excavator bucket 27, which is to be coupled to an earthmoving machine or the like by means of the connecting piece 1 illustrated in the figs. 1-4, is provided with a pair of coupling means 28 fixed to the tool 27 and being arranged at a distance from each other.
  • Each coupling means thereby comprises an elongated strip-shaped part 28', to whose bottom side there is attached a block 29, which has a recess 30 open at its upper side and at its lower side, the section of said recess gradually becoming smaller in downward direction, as appears from fig. 5, and being shaped to correspond with the conical end of locking members 24.
  • each coupling means is provided with a hooked part 31 defining a cavity 32 for accommodating the coupling bar 2.
  • the cavity 32 is thereby partly bounded by a boundary face 33 in the form of a circular arc, and by a fiat face 34, the purpose of which will be further explained hereinafter.
  • the connecting piece 1 When using the construction according to the invention the connecting piece 1 will be coupled, in the manner described above, to the arms of an earthmoving device, such as e.g. an shovel loader, bulldozer or the like. Of course it will also be possible to couple such a connecting piece 1 to the end of the jib of an exocavator.
  • an earthmoving device such as e.g. an shovel loader, bulldozer or the like.
  • an earthmoving device such as e.g. an shovel loader, bulldozer or the like.
  • the connecting piece For coupling the connecting piece to a tool provided with coupling means 28 the connecting piece will be manupulated such that the parts of the coupling bar 2 located between the plates 6, 7, and 8, 9 respectively will lie in the cavities 32 bounded by the hooked parts 31, whilst the bar 3 is thereby located at some distance from the blocks 29. Then, by suitably manipulating the connecting piece by means of the arms of the earthmoving device or the like, the connecting piece can be pivoted about the central axis of the coupling bar 2 into a position, in which the wedge-shaped bottom ends of the locking members 24 are located above the recesses 30 in the blocks 29. Subsequently the locking members can be pressed downwards by means of the setting cylinder 18 in order to press the wedge-shaped ends of the locking members into the correspondingly shaped recesses 30.
  • the parts of a block 29 bounding the recess 30 at its sides are provided with an upper face, which has a part 35 extending at least substantially perpendicularly to the longitudinal direction of the locking members 24, and a part 36 joining said part 35 and sloping upwards in the direction of the tool 27, seen in fig. 9.
  • the lower boundary face 37, co-operating therewith, of the plate 26 guiding the locking member 24 is similarly bevelled, whilst the bottom end of the other guide plate 25 is located at some distance above the block 29.
  • the outer boundary face of the plate 26 extending parallel to the locking member 24 is not in contact with the tool 17 in the coupled position.
  • the position of the coupling bar 2 is staggered relatively to the longitudinal axes of the locking members 24 in the direction of the tool, seen in side view, as a result o which a compact construction of the coupling mechanism is obtained.

Landscapes

  • 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)
  • Pivots And Pivotal Connections (AREA)
  • Manipulator (AREA)

Claims (5)

1. Dispositif de raccordement d'un outil (27) aux bras pivotants d'un engin de terrassement ou similaire, dans lequel le dispositif comprend un élément de liaison (1) qui est muni d'oeillets de raccordement (10-13) pour le raccordement pivotant de l'élément de liaison aux bras de la machine, d'au moins un élément de verrouillage (24) déplaçable dans sa direction longitudinale à l'aide d'un moyen de réglage (18) prévu sur l'élément de liaison, et d'une barre de raccordement (2) s'étendant transversalement à la direction longitudinale de l'élément de verrouillage (24), cette barre de raccordement s'ajustant dans une cavité (32) limitée par une partie de l'outil, cet outil (27) étant de plus muni d'un évidement (30) destiné à recevoir l'extrémité de l'élément de verrouillage (24) en éloignement de la barre de raccordement, cette extrémité de l'élément de verrouillage (24) étant en forme de coin, de sorte que lorseque l'extrémité de l'élément de verrouillage (24) est comprimé dans l'évidement (30) au moment du raccordement de l'élément de liaison (1) à l'outil (27) la barre de raccordement (2) est comprimé dans la cavité (32) et la part de l'élément de liaison (1) située à proximité de l'extrémité de l'élément de verrouillage (24) est poussée dans la direction de l'outil (27), caractérisé en ce que l'élément de liaison (1) et l'outil (27) sont munis de faces cunéiformes (36-37) qui s'appuient l'une sur l'autre dans la position où l'élément de liaison (1) est fixé à l'outil (27) et qui sont orientées de telle manière que lorseque l'élément de verrouillage en forme de coin (24) est introduit dans l'évidement (30) les faces cunéiformes (36-37) sont comprimées ensemble, et l'élément de liaison (1) est poussé dans la direction de la cavité (32) logeant la barre de raccordement (2).
2. Dispositif selon la revendication 1, dans lequel la barre de raccordement (2) présente une section ronde, caractérisé en ce que la cavité (32) logeant la barre de raccordement (2) présente une section non ronde le long au moins d'une partie de sa circonférence, de telle sorte que lorsque la barre de raccordement (2) est situé dans la cavité (32), elle vient en butée contre deux lignes limites longitudinales (38-39) dans la cavité (32), dont la dimension de section transversale diminue progressivement à partir des lignes limites longitudinales (38-39) dans une direction éloignée de l'élément de liaison (1).
3. Dispositif selon les revendications 1 ou 2, caractérisé en ce que deux éléments de verrouillage (24) sont disposés parallèlement entre aux et sont reliés mutuellement par un étrier (20) sur lequel agit un vérin de réglage (18).
4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la cavité (32) logeant la barre de raccordement (2) est disposée en quinconce par rapport au plan recevant l'axe longitudinal du ou des éléments de verrouillage (24) dans la direction de l'outil (27).
5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les faces cunéiformes (37-38) sont prévues sur une plaque (26) de l'élément de liaison guidant le ou les éléments de verrouillage (24) et sur les faces limitant le ou les évidements (30) qui reçoivent la ou les extrémités du ou des éléments de verrouillage.
EP88200220A 1987-02-11 1988-02-09 Dispositif de raccordement d'un outil aux bras pivotants d'un engin de terrassement ou similaire Expired - Lifetime EP0278571B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88200220T ATE57404T1 (de) 1987-02-11 1988-02-09 Vorrichtung zum anschliessen eines arbeitsgeraets an die schwenkbaren arme einer erdbewegungsmaschine oder dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8700323A NL8700323A (nl) 1987-02-11 1987-02-11 Inrichting voor het aankoppelen van een gereedschap aan verzwenkbare armen van een grondverzetmachine of dergelijke.
NL8700323 1987-02-11

Publications (2)

Publication Number Publication Date
EP0278571A1 EP0278571A1 (fr) 1988-08-17
EP0278571B1 true EP0278571B1 (fr) 1990-10-10

Family

ID=19849549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88200220A Expired - Lifetime EP0278571B1 (fr) 1987-02-11 1988-02-09 Dispositif de raccordement d'un outil aux bras pivotants d'un engin de terrassement ou similaire

Country Status (4)

Country Link
EP (1) EP0278571B1 (fr)
AT (1) ATE57404T1 (fr)
DE (1) DE3860760D1 (fr)
NL (1) NL8700323A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7814689B2 (en) 2006-04-20 2010-10-19 Caterpillar Inc Quick coupler
US10029896B2 (en) 2014-12-17 2018-07-24 Caterpillar Inc. Tool coupler having compact locking configuration

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663059B1 (fr) * 1990-06-08 1992-09-11 Esco Sa Dispositif de fixation rapide d'outil de travail sur un bras d'une machine notamment de travaux publics.
FR2670520A1 (fr) * 1990-12-17 1992-06-19 Esco Sa Dispositif perfectionne de fixation, rapide d'outil de travail sur un bras d'une machine notamment de travaux publics.
NL191711C (nl) * 1990-08-16 1996-04-02 Pladdet B V Geb Snelkoppeling voor een grondverzetinrichting.
US5382110A (en) * 1992-12-30 1995-01-17 Esco Corporation Quick coupling device
US5529419A (en) * 1994-07-25 1996-06-25 Jrb Company, Inc. High visibility coupler for front end loader
NO321760B1 (no) * 2003-11-19 2006-07-03 Lars Magnus Solstad Fjernstyrt pakoplingsanordning for loftekolli
US8469623B2 (en) 2009-04-01 2013-06-25 Caterpillar Work Tools B.V. Quick coupling device
US8833480B2 (en) 2011-06-24 2014-09-16 Caterpillar Inc. Coupler with visibility window
US11208784B2 (en) 2016-10-14 2021-12-28 Timothy Molnar Quick change coupling apparatus and method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243066A (en) * 1964-01-20 1966-03-29 Caterpillar Tractor Co Quick change means for loader attachments
NO106518L (fr) * 1964-03-14 1900-01-01
US3718222A (en) * 1970-12-11 1973-02-27 Blacksmith L Coupling for detachable implements
AT327096B (de) * 1974-03-05 1976-01-12 Schoberl & Soehne Joh Verriegelungseinrichtung zwischen der hubeinrichtung eines ladegerates und einem anbaugerat
US4345872A (en) * 1978-07-10 1982-08-24 Wain-Roy, Inc. Connectors
US4355945A (en) * 1979-12-03 1982-10-26 Ware Machine Service, Inc. Tool mounting apparatus
DE3100845A1 (de) * 1981-01-14 1983-04-28 Baas Technik GmbH, 2000 Wedel Abstellfrontlader

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7814689B2 (en) 2006-04-20 2010-10-19 Caterpillar Inc Quick coupler
US10029896B2 (en) 2014-12-17 2018-07-24 Caterpillar Inc. Tool coupler having compact locking configuration

Also Published As

Publication number Publication date
DE3860760D1 (de) 1990-11-15
ATE57404T1 (de) 1990-10-15
EP0278571A1 (fr) 1988-08-17
NL8700323A (nl) 1988-09-01

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