EP0278571B1 - Device for coupling a tool to pivoting arms of an earthmoving machine or the like. - Google Patents

Device for coupling a tool to pivoting arms of an earthmoving machine or the like. 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)
French (fr)
Other versions
EP0278571A1 (en
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/en
Publication of EP0278571A1 publication Critical patent/EP0278571A1/en
Application granted granted Critical
Publication of EP0278571B1 publication Critical patent/EP0278571B1/en
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)

Abstract

Device for connecting an implement to pivoting arms of an earthmoving machine or the like, whereby the device comprises a connecting piece (1), which is provided with coupling ears for pivotally coupling the connecting piece to the arms of the excavator. The connecting piece is also provided with a lock (24) 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 lock. The coupling bar fits a cavity bounded by a part of the tool, which is further provided with a recess for accommodating the conical end of the lock remote from the coupling bar. When the end of the lock is pressed into the recess upon coupling the connecting piece to the tool the coupling bar is pressed into the cavity, the part of the connecting piece located near the end of the lock is pushed in the direction of the tool, and wedge faces provided on the connecting piece and the tool are pressed together.

Description

  • 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.
  • Such a device is disclosed in the British patent specification 1 089 885. In this known device the connecting piece bears with some flat parts, extending parallel to the direction of displacement of the locking member, against corresponding flat parts of the tool, whilst in the attached position the coupling bar bears against the bottom of the cavity accommodating the coupling bar and being bounded by a U-profile. In practice it has become apparent, however, that in many cases an insufficient clamping is obtained, and in particular play may occur in a direction perpendicular to the direction of displacement of the locking member.
  • According to the invention 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.
  • When the end of the locking member is pressed into the recess not only a force extending substantially perpendicularly to the direction of displacement of the locking member will be exerted on the connecting piece, but also a force extending substantially perpendicularly to the longitudinal direction of the locking member, as a result of which a particularly tight clamping of the connecting piece to the tool can be achieved by using this construction.
  • According to a further aspect of the invention 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.
  • On account of said configuration of the cavity and in co-operation with the force exerted on the connecting piece and extending at least substantially in the longitudinal direction of the locking member, a particularly good clamping of the coupling bar in the cavity will be effected.
  • A description of an embodiment of the invention will be given in conjunction with the accompanying drawings.
    • Fig. 1 is a view of a connecting piece of the device according to the invention.
    • Fig. 2 is a side view of fig. 1, seen according to the arrow II in fig. 1.
    • Fig. 3 is a section of fig. 1, seen according to the line III-III in fig. 1, whereby, however, one locking member is only partly illustrated and further parts have been left out for convenience of comparison.
    • Fig 4 is a section of fig 1, seen according to the line IV-IV in fig 1, whereby, however, parts have been left out for convenience of comparison.
    • Fig 5 is a diagrammatic side view of a tool in the shape of an excavator bucket.
    • Fig. 6 is a view of the tool illustrated in fig. 5, seen according to the arrow VI in fig. 5.
    • Fig. 7 diagrammatically illustrates the connection between the connecting piece and the parts attached to the tool, whereby the tool has been left out.
    • Fig. 8 illustrates on a larger scale the position of the coupling bar of the connecting piece in a cavity accomodating said bar.
    • Fig. 9 illustrates on a larger scale the end of the locking member with the means accomodating said end and being connected to the tool.
  • 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.
  • On both sides of said pair of plate-shaped parts 4 and 5 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. To the ends of the bar 2 there are attached 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.
  • In the plate-shaped parts 10-13 there are provided 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.
  • Between the plates 4 and 5 there is furthermore arranged 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.
  • As is furthermore illustrated in figs. 5 and 6 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.
  • At its upper side each coupling means is provided with a hooked part 31 defining a cavity 32 for accommodating the coupling bar 2.
  • As appears in particular from fig. 8 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.
  • 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.
  • 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.
  • As appears in particular from fig. 9 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. As is furthermore quite apparent from fig. 9 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.
  • Using this construction, it will be apparent, that when the locking member 24 is pressed downwards in the direction according to the arrow A (fig. 9) the two wedge faces 36 and 37 will be pressed together in a direction perpendicular to the direction of displacement of the locking member 24 because said wedge faces 36 and 37 slope upwards from the right to the left, seen in fig. 9, a force will be exerted on the connecting piece in the opposite direction of the arrow A. As a consequence the coupling bar 2 will be pressed strongly against the boundary wall of the cavity 32. The coupling bar 2 will thereby butt against said boundary wall along a pair of longitudinal boundary lines 38 and 39, the boundary line 39 being located on the oblique face 34.
  • Because the cross-sectional dimension of the cavity 32, due to the oblique face, decreases from said boundary line in the direction of the bottom of said cavity, in upward direction in fig. 8, therefore, at the same time a tight clamping of the coupling bar in the relevant cavity will be effected when the coupling bar 2 is pressed into cavity 32.
  • Consequently it will be apparent that the the locking member 24 are pressed downwards, seen in figs. 1 and 9, by means of the setting cylinder 18 a rigid, but easily effected and also easily detached connection can be effected between the connecting piece 1 and the tool 27.
  • As will furthermore be apparent from the figures 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.

Claims (5)

1. Device for coupling a tool (27) to pivoting arms of an earthmoving machine or the like, wherein the device comprises a connecting piece (1), which is provided with coupling ears (10-13) for pivotally coupling the connecting piece to the arms of the machine, at least one locking member (24) displaceable in its longitudinal direction by means of an adjusting means (18) provided on the connecting piece, and with a coupling (2) bar extending transversely to the longitudinal direction of the locking member (24), said coupling bar fitting in a cavity (32) bounded by a part of the tool, said tool (27) being further provided with a recess (30) for accommodating the end of the locking member (24) remote from the coupling bar, said end of the locking member (24) being wedge shaped such that when the end of the locking member (24) is pressed into the recess (30) upon coupling the connecting piece (1) to the tool (27) the coupling bar (2) is pressed into the cavity (32) and the part of the connecting piece (1) located near the end of the locking member (24) is pushed in the direction of the tool (27), characterized in that the connecting piece (1) and the tool (27) are provided with wedge faces (36, 37), which bear against each other in the position where the connecting piece (1) is attached to the tool (27) and which are orientated such that when the wedgeshaped locking member (24) is driven into the recess (30) the wedge faces (36, 37) are pressed together and the connecting piece (1) is pushed in the direction of the cavity (32) accommodating the coupling bar (2).
2. Device according to claim 1, whereby the coupling bar (2) has a round section, characterized in that the cavity (32) accommodating the coupling bar (2) has an unround section along at least part of its circumference, such that when the coupling bar (2) is located in the cavity (32) the coupling bar (2) butts against two longitudinal boundary lines (38, 39) in the cavity (32), the size of whose cross-section gradually decreases from said longitudinal boundary lines (38, 39) in a direction remote from the connecting piece (1).
3. Device according to claims 1 or 2, characterized in that two locking members (24) are arranged parallel to each other and are mutually connected by a yoke (20) on which there acts a setting cylinder (18).
4. Device according to any one of the preceding claims, characterized in that the cavity (32) accommodating the coupling bar (2) is staggered relatively to the plane accommodating the longitudinal axis of the locking member(s) (24), in the direction of the tool (27).
5. Device according to any one of the preceding claims, characterized in that the wedge faces (36, 37) are provided on a plate (26) of the connecting piece guiding the locking member(s) (24), and on the faces bounding the recess(es) (30) that accommodate the end(s) of the locking member(s).
EP88200220A 1987-02-11 1988-02-09 Device for coupling a tool to pivoting arms of an earthmoving machine or the like. Expired - Lifetime EP0278571B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88200220T ATE57404T1 (en) 1987-02-11 1988-02-09 DEVICE FOR CONNECTING AN APPLICATION TO THE ARTICULATING ARMS OF AN EARTH-MOVING MACHINE OR SIMILAR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8700323A NL8700323A (en) 1987-02-11 1987-02-11 DEVICE FOR ATTACHING A TOOL TO SWING ARMS OF A GROUND MOVER OR THE LIKE.
NL8700323 1987-02-11

Publications (2)

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

Family

ID=19849549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88200220A Expired - Lifetime EP0278571B1 (en) 1987-02-11 1988-02-09 Device for coupling a tool to pivoting arms of an earthmoving machine or the like.

Country Status (4)

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

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
FR2670520A1 (en) * 1990-12-17 1992-06-19 Esco Sa Improved device for rapidly fixing a work tool onto an arm of a machine, particularly a civil engineering machine
FR2663059B1 (en) * 1990-06-08 1992-09-11 Esco Sa DEVICE FOR QUICK FIXING OF A WORKING TOOL ON AN ARM OF A MACHINE, PARTICULARLY FOR PUBLIC WORKS.
NL191711C (en) * 1990-08-16 1996-04-02 Pladdet B V Geb Shortcut for an earthmoving device.
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 (en) * 2003-11-19 2006-07-03 Lars Magnus Solstad Remote controlled packing device for ceiling packages
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

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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 (en) * 1964-03-14 1900-01-01
US3718222A (en) * 1970-12-11 1973-02-27 Blacksmith L Coupling for detachable implements
AT327096B (en) * 1974-03-05 1976-01-12 Schoberl & Soehne Joh LOCKING DEVICE BETWEEN THE LIFTING DEVICE OF A CHARGER AND AN ADD-ON DEVICE
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 (en) * 1981-01-14 1983-04-28 Baas Technik GmbH, 2000 Wedel Detachable front loader

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 (en) 1990-11-15
ATE57404T1 (en) 1990-10-15
NL8700323A (en) 1988-09-01
EP0278571A1 (en) 1988-08-17

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