EP0321902A1 - Dispositif de fixation d'un outil sur un engin de terrassement - Google Patents

Dispositif de fixation d'un outil sur un engin de terrassement Download PDF

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Publication number
EP0321902A1
EP0321902A1 EP88121217A EP88121217A EP0321902A1 EP 0321902 A1 EP0321902 A1 EP 0321902A1 EP 88121217 A EP88121217 A EP 88121217A EP 88121217 A EP88121217 A EP 88121217A EP 0321902 A1 EP0321902 A1 EP 0321902A1
Authority
EP
European Patent Office
Prior art keywords
coupling
implement
bracket
holding
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
EP88121217A
Other languages
German (de)
English (en)
Other versions
EP0321902B1 (fr
Inventor
Hans-Rudolf Zepf
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.)
DRAGO ENGINEERING AG
Original Assignee
ZEPF, Hans-Rudolf
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 ZEPF, Hans-Rudolf filed Critical ZEPF, Hans-Rudolf
Priority to AT88121217T priority Critical patent/ATE103027T1/de
Publication of EP0321902A1 publication Critical patent/EP0321902A1/fr
Application granted granted Critical
Publication of EP0321902B1 publication Critical patent/EP0321902B1/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
    • E02F3/3622—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 locking element acting on a pin
    • 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
    • E02F3/3668—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat where engagement is effected by a mechanical lever or handle
    • 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
    • E02F3/3672—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat where disengagement is effected by a mechanical lever or handle

Definitions

  • the invention relates to a coupling device for coupling an implement for the soil and construction technology, which is attached to the end arm of a boom of a construction machine, in particular an excavator, by means of an axis and can be actuated by a linear motor assigned to the end arm for pivoting the implement about the axis , wherein the end arm and the piston rod of the linear motor or a link connected to the piston rod via a swivel lever are connected to the free end and to the implement by a connecting part.
  • the excavator with its many design variants represents a large-scale working machine for this purpose, and its modern design as a hydraulic excavator is particularly powerful and versatile.
  • the different embodiments relate primarily to the size and the support and locomotion means of the excavator, while for the handling of an implement all excavators are largely equipped with an extension arm, at the end of which the implement is supported by an end arm.
  • the boom is divided into boom parts, each of which is adjustable, for example by hydraulic linear motors.
  • the end arm and the implement are also adjustable, for example using hydraulic linear motors.
  • the implement is pivoted on the end arm and its position is adjusted by the linear motor.
  • the quick coupling essentially consists of a hook that is hooked into a shaft.
  • a clamping device is used to hold the hook, e.g. a clamping screw with which the two parts of the quick coupling are clamped and held.
  • the connecting part is formed by a holding arm arranged at both ends with gripping means to form a holding bracket separate from the implement, the gripping means of the holding bracket can be coupled to holding means arranged on the working device in its separating and fastening area. Due to the fact that the connecting means required on the implement for connecting to the end arm and the linear motor are arranged in the connecting part designed for the retaining bracket, no greater overall height is required than when the implement is directly coupled to the end arm and to the linear motor.
  • the excavator shown in Figure 1 has a crawler track 1, on which an upper part 2 is rotatably mounted. On the upper part 2, a driver's cab 3 and a jib 4 are mounted.
  • an end arm 7 is pivotally articulated, on which an excavator bucket 8 is articulated.
  • the end arm 7 is pivoted by a hydraulic linear motor 9 relative to the boom part 6, which in turn is supported on the boom part 6.
  • a further hydraulic linear motor 10 is mounted on the arm 7, the piston rod 11 of which engages on a pivot lever 12 which is pivotably mounted on the end arm 7 and transmits the stroke movement of the linear motor 10 to the excavator bucket 8.
  • the excavator bucket 8 is provided with two joints. With one joint 14, the excavator bucket 8 is connected in an articulated manner to the end arm 7, while it is connected to the joint 15 via the link 13 and the pivoting lever 12 with the hydraulic linear motor 10.
  • the linear motor 10 thus pivots the excavator bucket 8 around the joint 14. This is the normal connection between the excavator bucket 8 and the end arm 7 when the excavator is used practically exclusively with the excavator bucket 8.
  • the excavator is also used for other work, for example with a chisel, a hydraulic hammer and the like. If possible, the bucket quickly replace with another implement, the range of uses of the excavator is significantly increased.
  • FIG. 2 shows the solution according to the invention of a coupling device 18 for quickly changing work tools on the boom of an excavator.
  • the excavator bucket 8 is connected to the end arm 7 and the linear motor 10 by means of a connecting part 16, in which the joints 14, 15 are also arranged.
  • the connecting part 16 with the joints 14, 15 is expanded to form a holding bracket 19 in order to form the quick coupling.
  • the bracket 19 is essentially designed as an angle lever with two holding arms 20, 21.
  • the two holding arms 20, 21 have, as will be explained in more detail at their ends, gripping means which are also attached to the implement, i.e. arranged on the excavator bucket 8 holding means can be coupled to a fixed connection.
  • the excavator bucket 8 has an end surface 23 on which a support surface 24 is attached as a closure against the end arm.
  • the support surface 24 has a curvature 25 on the end arm side, on which a support plate 26 is fastened.
  • the support surface 24 extends over the entire width of the excavator bucket 8 and lies between the side walls 30 thereof.
  • a holding shaft 27 is fastened by means of webs 28.
  • a bearing support 31 is fastened on the upper side of the end surface 23 at a distance from the holding shaft 27 and has a bore 32 parallel to the joints 10, 15, which runs into a slot 33 that widens upwards.
  • the holding shaft 27 and the bearing support 31 form the holding means of the implement.
  • the gripping means of the holding bracket 19 are composed of a bearing half-shell 35, which is formed on the inwardly curved end of the holding arm 20 on the end arm side, and a coupling shaft 37.
  • the clutch shaft 37 is in the linear arm-side support arm rotatably mounted and is provided with a handle bracket 38, by means of which the coupling shaft 37 can be pivoted.
  • the coupling shaft 37 has a cross section reduced by a circular section 39. In the position of the circular section 39 shown in FIG. 2, the coupling shaft 37 cannot be removed from the slot 33.
  • the circular section 39 is arranged such that in a certain position of the handle bar 38, for example in the position shown in broken lines, the coupling shaft 37 can be removed from the slot 33, but not in another position, for example in the extended position of the handle bar 38.
  • the holding bracket 19 is expediently formed from two parallel webs which are connected to one another by transverse webs 34.
  • the bearing support 31 then lies between the two retaining bracket webs.
  • FIG. 3 shows the coupling of an implement in the form of the excavator bucket 8.
  • the holding arm 20 of the holding bracket 19 encompasses the holding shaft 27 with the bearing half shell 35 arranged at its end 36, while the other holding arm 21 on the linear motor side moves in the direction of the arrow against the bearing support 31.
  • the handle bar 38 is in such a position that the coupling shaft 37 with the circular cutout 39 can be inserted into the bore 32 through the slot 33. After insertion into the bore 32, the handle bar 38 is brought into the extended position shown in Fig. 2, whereby it lies between the webs of the bracket 19 and is protected.
  • the clutch shaft is in a position in which it cannot be removed from the bore 32.
  • an elastic pressure element 40 arranged on the inside of the holding bracket 19 moves against that on the arch 25 of the support surface 24 attached support plate 26.
  • the elastic pressure element 40 is supported on a support profile 41 fastened between the webs of the holding bracket 21.
  • the pressure element 40 can be a rubber or steel spring element, which, through its pressure effect on the support plate 26, cancels any play between the holding bracket 19 and the implement 8.
  • FIG. 4-7 shows a variant of the coupling device in which the mounting of the holding arm 20 takes place in the same way as in the embodiment according to FIGS. 2 and 3 via the bearing half-shell 35 with the holding shaft 27, while a full coupling shaft 37 is located in the holding arm 21 on the linear motor side 'Is stored.
  • a bearing half-shell 42 is fastened, which in the coupling position rests on the coupling shaft 37 ', see Figure 5.
  • the handle bar 38 is connected to a coupling shell 43 which is connected by means of a pin 44, e.g. a cross pin, with the coupling shaft 37 'is connected.
  • Two coupling shells 43 are expediently provided, as shown in FIGS. 5 and 7.
  • fasteners 45 e.g. Retaining rings with which the shaft 37 'is guided in the two webs of the bracket 19, is provided.
  • the coupling device 18 described enables the overall height between the end arm 7 and the implement 8 to be approximately the same to be kept large as in the case of an implement which is coupled directly to the joints 14 of the end arm or of the handlebar 13 with its fastening means arranged on the end face 23.
  • various other implements can be replaced quickly and easily with the coupling device described.
  • the retaining bracket 19 consisting of two webs with cross bars 34 can be produced as a welded construction made of sheet steel, the thickness of which can be chosen to be sufficiently strong (15-20 mm) in accordance with the stresses that occur.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)
  • Agricultural Machines (AREA)
  • Earth Drilling (AREA)
EP88121217A 1987-12-22 1988-12-19 Dispositif de fixation d'un outil sur un engin de terrassement Expired - Lifetime EP0321902B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88121217T ATE103027T1 (de) 1987-12-22 1988-12-19 Kupplungsvorrichtung zum ankuppeln eines geraetes an den ausleger einer baumaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5004/87 1987-12-22
CH5004/87A CH675266A5 (fr) 1987-12-22 1987-12-22

Publications (2)

Publication Number Publication Date
EP0321902A1 true EP0321902A1 (fr) 1989-06-28
EP0321902B1 EP0321902B1 (fr) 1994-03-16

Family

ID=4286282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88121217A Expired - Lifetime EP0321902B1 (fr) 1987-12-22 1988-12-19 Dispositif de fixation d'un outil sur un engin de terrassement

Country Status (4)

Country Link
EP (1) EP0321902B1 (fr)
AT (1) ATE103027T1 (fr)
CH (1) CH675266A5 (fr)
DE (1) DE3888492D1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5141385A (en) * 1989-06-29 1992-08-25 Steelfab Limited Implement attachment coupler
EP0864697A1 (fr) * 1997-03-10 1998-09-16 Clark Equipment Company Structure de fixation pour un outil de terrassement
US5983535A (en) * 1997-03-10 1999-11-16 Clark Equipment Company Fastener secured frame for boom mounted quick change bracket
US6163989A (en) * 1997-03-10 2000-12-26 Clark Equipment Company Frame for mounting on a boom mounted quick change bracket
FR2852615A1 (fr) * 2003-03-18 2004-09-24 Liebherr Hydraulikbagger Changeur rapide servant a accoupler un outil notamment a la fleche d'une pelle excavatrice
EP1983147A2 (fr) * 2007-04-16 2008-10-22 Liebherr-Werk Nenzing GmbH Appareil de montage, jumelle et procédé de montage de la jumelle sur l'appareil de montage
WO2015110209A1 (fr) * 2014-01-22 2015-07-30 Caterpillar Work Tools B.V. Système d'échange pour outil de machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11035094B1 (en) 2020-01-10 2021-06-15 Ferguson Trailer Transport, Inc. Device and method for extending material mover reach

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436743A1 (fr) * 1978-09-25 1980-04-18 Laan Roelof Dispositif d'accouplement d'une fleche a un outil
US4225283A (en) * 1979-02-15 1980-09-30 J. I. Case Company Backhoe bucket quick coupling
US4295287A (en) * 1980-04-10 1981-10-20 J. I. Case Company Backhoe bucket quick coupler
EP0122547A1 (fr) * 1983-04-07 1984-10-24 Karl Schaeff GmbH & Co. Dispositif de changement rapide
WO1985004440A1 (fr) * 1984-03-29 1985-10-10 Daryl John Spencer Dispositifs d'accrochage
US4643631A (en) * 1985-04-22 1987-02-17 J. I. Case Company Quick coupling and release mechanism for buckets

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436743A1 (fr) * 1978-09-25 1980-04-18 Laan Roelof Dispositif d'accouplement d'une fleche a un outil
US4225283A (en) * 1979-02-15 1980-09-30 J. I. Case Company Backhoe bucket quick coupling
US4295287A (en) * 1980-04-10 1981-10-20 J. I. Case Company Backhoe bucket quick coupler
EP0122547A1 (fr) * 1983-04-07 1984-10-24 Karl Schaeff GmbH & Co. Dispositif de changement rapide
WO1985004440A1 (fr) * 1984-03-29 1985-10-10 Daryl John Spencer Dispositifs d'accrochage
US4643631A (en) * 1985-04-22 1987-02-17 J. I. Case Company Quick coupling and release mechanism for buckets

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5141385A (en) * 1989-06-29 1992-08-25 Steelfab Limited Implement attachment coupler
EP0864697A1 (fr) * 1997-03-10 1998-09-16 Clark Equipment Company Structure de fixation pour un outil de terrassement
US5974706A (en) * 1997-03-10 1999-11-02 Clark Equipment Company Attachment construction for earthworking implement
US5983535A (en) * 1997-03-10 1999-11-16 Clark Equipment Company Fastener secured frame for boom mounted quick change bracket
US6154989A (en) * 1997-03-10 2000-12-05 Clark Equipment Company Attachment construction for earthworking implement
US6163989A (en) * 1997-03-10 2000-12-26 Clark Equipment Company Frame for mounting on a boom mounted quick change bracket
FR2852615A1 (fr) * 2003-03-18 2004-09-24 Liebherr Hydraulikbagger Changeur rapide servant a accoupler un outil notamment a la fleche d'une pelle excavatrice
US7086804B2 (en) 2003-03-18 2006-08-08 Liebherr-Hydraulikbagger Gmbh Quick-change attachment
EP1983147A2 (fr) * 2007-04-16 2008-10-22 Liebherr-Werk Nenzing GmbH Appareil de montage, jumelle et procédé de montage de la jumelle sur l'appareil de montage
EP1983147A3 (fr) * 2007-04-16 2009-01-28 Liebherr-Werk Nenzing GmbH Appareil de montage, jumelle et procédé de montage de la jumelle sur l'appareil de montage
WO2015110209A1 (fr) * 2014-01-22 2015-07-30 Caterpillar Work Tools B.V. Système d'échange pour outil de machine

Also Published As

Publication number Publication date
EP0321902B1 (fr) 1994-03-16
ATE103027T1 (de) 1994-04-15
CH675266A5 (fr) 1990-09-14
DE3888492D1 (de) 1994-04-21

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