EP1580330A2 - Dispositif changeur rapide pour excavatrices. - Google Patents

Dispositif changeur rapide pour excavatrices. Download PDF

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Publication number
EP1580330A2
EP1580330A2 EP05006635A EP05006635A EP1580330A2 EP 1580330 A2 EP1580330 A2 EP 1580330A2 EP 05006635 A EP05006635 A EP 05006635A EP 05006635 A EP05006635 A EP 05006635A EP 1580330 A2 EP1580330 A2 EP 1580330A2
Authority
EP
European Patent Office
Prior art keywords
quick
change device
accordance
locking component
main body
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
EP05006635A
Other languages
German (de)
English (en)
Other versions
EP1580330A3 (fr
EP1580330B1 (fr
Inventor
Thomas Sauer
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.)
Caterpillar Work Tools BV
Original Assignee
Caterpillar Work Tools 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 Caterpillar Work Tools BV filed Critical Caterpillar Work Tools BV
Publication of EP1580330A2 publication Critical patent/EP1580330A2/fr
Publication of EP1580330A3 publication Critical patent/EP1580330A3/fr
Application granted granted Critical
Publication of EP1580330B1 publication Critical patent/EP1580330B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E02F3/3654—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with energy coupler, e.g. coupler for hydraulic or electric lines, to provide energy to drive(s) mounted on the tool
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2275—Hoses and supports therefor and protection therefor

Definitions

  • the invention generally relates to quick-change devices for attaching implements onto work machines while simultaneously connecting hydraulic conduits.
  • a disadvantage associated with these quick-change devices is, for example, the expensive construction of the quick-change devices and the type of locking mechanism.
  • a hydraulic fluid feed and outlet for the main function of the tool it may well be necessary to provide corresponding control lines for additional secondary functions.
  • a feed and an outlet are also required for operating (locking and unlocking) the quick-change device. Because of the large number of hydraulic hoses, there is increased risk of one of the hydraulic hoses becoming trapped or even sheared off between movable parts.
  • the quick-change device When using a hydraulic hammer, the quick-change device must apply great forces in order to attach the excavator boom or stick to the tool without any vibrations. Any play between the excavator boom or stick and the tool may result in the quick-change device becoming worn out and or its function becoming adversely effected. In this way, for example, the hydraulic couplings could become leaky because of slight relative movements between the excavator boom or stick and the tools.
  • Conventional quick-change devices hook onto the tool at one end and caulk, wedge, or clamp the quick-change device to the tool by means of the locking components along the whole length of the quick-change device. In so doing, huge forces are applied so as to create an attachment free from play. These forces can lead to deformation of the quick-change device so that the locking components and/or the hydraulic couplings must be appropriately readjusted so as to maintain a reliable attachment.
  • the invention aims to overcome or avoid the disadvantages of the prior art, and to provide an optimised quick-change device.
  • the illustrated quick-change device 1 has a main body 2 which is confined or terminated at the sides by side portions, preferably by one-piece side plates 3, 4.
  • the one-piece design means that the side plates 3, 4 are given increased stability and can be produced more easily in comparison with quick-change devices which have the lugs, for example, welded on for attachment to the excavator boom or stick.
  • reinforcement plates 5, 6 can be provided on the side plates 3, 4.
  • the reinforcement plates 5, 6 can, for example, be welded onto the side plates 3, 4.
  • Holes 7 which pass through the side plates 3, 4, and, if necessary, through the reinforcement plates 5, 6, are provided for holding bearing bushings 8 for attachment to a excavator boom or stick.
  • the holes 7 can also be provided at a later stage so that the otherwise finished quick-change device can be adapted to the situation of an existing excavator boom or stick.
  • locking components with multiple couplings can also be used so that several hydraulic work functions are made possible.
  • three locking components 9, 10, 11 are provided; but it is also possible to provide more or less locking components.
  • one locking component may provide an input port and another locking component may provide an output port.
  • hydraulic couplings and corresponding feed conduits with a large diameter are provided so as to guarantee a high flow rate.
  • several smaller hydraulic couplings with correspondingly smaller feed conduits can be combined in one single locking component, as shown in Figs. 1 and 3 for the central locking component 10.
  • the locking components 9, 10, 11 have an essentially cylindrical shape, and this simplifies their production as well as the maintenance of tolerances and the provision of corresponding bearings as compared to other shapes of locking components.
  • the locking components Preferably, have a diameter of approx. 10 centimetres, thereby providing a small structural size in combination with reliable locking.
  • the locking components preferably have a bevel 9a, 10a, 11 a which makes it easy to introduce the locking components into corresponding recesses in the tool (not shown) and which makes it possible to provide caulking wedging, or Clamping persistently free from play, in the recess for the tool.
  • the locking components 9, 10, 11 extend and move essentially parallel to the side plates 3, 4.
  • the hydraulic couplings 12, 13, 14 are provided in the locking components 9, 10, 11 which may be fixedly, elastically or spring mounted.
  • the hydraulic couplings can, for example, be screwed in, wherein preferably the corresponding screw socket is elastically mounted in the locking component by means of a rubber sleeve or gasket, or is spring mounted by means of a Belleville spring or a coil spring.
  • the side plates 3, 4 respectively have on the rear lower end, in accordance with Figs. 1 and 3, or alternatively on the right hand side at the bottom, in accordance with fig. 2, a recess 15 for engagement with a corresponding bolt or projection on the tool.
  • the side plates 3, 4 have on the front end, in accordance with Figs. 1 and 3, or alternatively on the left hand side, in accordance with fig. 2, a hook-like projection 16 which defines a recess 17.
  • the recess 15 essentially serves to fix the tool and the quick-change device in a vertical direction as shown in the Figures. In the prior art, this type of recess will also transfer the large caulking or clamping forces in a horizontal direction.
  • a directional control valve (not shown) can be provided in the quick-change device 1.
  • the directional control valve serves to switch over hydraulic conduits for less frequently used functions. For example, secondary functions of the tool are only rarely used, and the same hydraulic supply conduits can, thanks to the directional control valve, also be used for locking and unlocking the quick-change device, especially since the functions of the tool are never required at the same time during locking or unlocking of the quick-change device. In this way, the number of required hydraulic supply conduits may be reduced by two.
  • the main supply conduits for the main functions are attached via correspondingly sized connections 18, 19 with the quick-change device or the couplings 12, 14 in the locking components 9, 11. Additional, preferably small supply conduits for the secondary functions or for the locking and unlocking of the quick-change device are connected to corresponding connections 20, 21. From the connections 20, 21 and via the directional control valve, either a connection can be made to the hydraulic couplings 13 in the locking component 10, or the operation cylinder(s) (not shown) for the locking components 9, 10, 11 can be operated.
  • the invention is also directed to work tools or implements for cooperation with the quick-change device.
  • connections 18-21 may be provided on a movable carriage which can move together with the locking components 9, 10, 11.
  • the carriage covers and seals an elongate opening beneath the carriage and prevents dirt or debris from entering.
  • the bearing bushings 8 are sized and arranged such that conduits connected to the connections 18-21 have sufficient clearance for passing by the excavator boom or stick and may also adapt to a tilting movement e. g. of a bucket.
  • four or more locking members may be provided.
  • these four or more locking members are aligned side by side across the width of the main body of the quick-change device, thereby forming an array of locking members.
  • the outer locking members in the array may accommodate couplings having a relatively small diameter for handling a smaller flow rate, such as for secondary hydraulic functions of the implement, and the inner locking members of the array may accommodate couplings having a relatively larger diameter for handling a larger flow rate, such as for the primary hydraulic function of the implement.
  • the diameter of the outer locking members accommodating the smaller diameter couplings may be even larger than the diameter of the inner locking members accommodating the larger diameter couplings, thereby providing outer locking members which are mechanically very robust and sturdy, whereas the inner locking members only play a minor role in the mechanical locking of the quick-change device and the implement. Since the highest forces are applied near the outer sides of the quick-change device, the strong outer locking members can withstand these high forces while keeping the overall dimensions of the locking members and of the quick-change device relatively small and compact.
  • the absolute size of the locking members will, of course, also depend on the size of the hydraulic coupling accommodated therein. In this context, it is emphasized that it may be advantageous that the outer locking members be mechanically stronger than the inner locking members.
  • the inner locking members may be sized according to the mechanical and hydraulic requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
EP20050006635 2004-03-26 2005-03-24 Dispositif de changement rapide pour le raccordement à une machine outils de travail Active EP1580330B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410015471 DE102004015471A1 (de) 2004-03-26 2004-03-26 Schnellwechsler für Bagger
DE102004015471 2004-03-26

Publications (3)

Publication Number Publication Date
EP1580330A2 true EP1580330A2 (fr) 2005-09-28
EP1580330A3 EP1580330A3 (fr) 2006-03-22
EP1580330B1 EP1580330B1 (fr) 2012-11-07

Family

ID=34854107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050006635 Active EP1580330B1 (fr) 2004-03-26 2005-03-24 Dispositif de changement rapide pour le raccordement à une machine outils de travail

Country Status (2)

Country Link
EP (1) EP1580330B1 (fr)
DE (1) DE102004015471A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007131800A1 (fr) * 2006-05-17 2007-11-22 Lehnhoff Hartstahl Gmbh & Co. Kg Dispositif de changement rapide
CN110453742A (zh) * 2019-08-16 2019-11-15 徐工集团工程机械有限公司 一种液压挖掘机全自动快换装置
CN111270717A (zh) * 2020-03-26 2020-06-12 潘建业 锁紧卡盘式的液压挖掘机机具快换装置
CN113294413A (zh) * 2021-06-08 2021-08-24 大族激光科技产业集团股份有限公司 快速连接机构和执行设备

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT2038485E (pt) 2006-06-27 2012-07-19 Oscar Meier Ag Dispositivo de acoplamento e máquina para remoção de terras que compreende um tal dispositivo de acoplamento
AT11312U1 (de) * 2009-03-23 2010-08-15 Baumaschinentechnik Ges M B H Schnellkupplung für baumaschinen
DE202010003410U1 (de) 2010-03-10 2011-08-02 Jürgen Nagler Vorrichtung zum Werkzeugwechsel bei Hydraulikbaggern
DE202019101747U1 (de) * 2019-03-27 2020-06-30 Kinshofer Gmbh Schnellwechsler für Baumaschinenwerkzeuge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69210405T2 (de) 1991-09-06 1996-12-05 John Teodor Sonerud Schnellkupplungsvorrichtung für hydraulikleitungen
WO1997030231A1 (fr) 1996-02-19 1997-08-21 Soneruds Maskin Ab Dispositif d'accouplement d'un outil et d'un engin de travaux
US20010004904A1 (en) 1998-07-29 2001-06-28 Woods Equipment Company, A Delaware Corporation Multi-line rotatable fluid coupler
DE102008000036A1 (de) 2008-01-10 2009-07-23 Leica Biosystems Nussloch Gmbh Verfahren zum Anfertigen histologischer Schnitte mit einem Mikrotom

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5890871A (en) * 1997-12-10 1999-04-06 Caterpillar Inc. Latching mechanism for a quick coupler
GB0101663D0 (en) * 2001-01-23 2001-03-07 Scott Peter W Hydro mechanical clamp

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69210405T2 (de) 1991-09-06 1996-12-05 John Teodor Sonerud Schnellkupplungsvorrichtung für hydraulikleitungen
WO1997030231A1 (fr) 1996-02-19 1997-08-21 Soneruds Maskin Ab Dispositif d'accouplement d'un outil et d'un engin de travaux
US20010004904A1 (en) 1998-07-29 2001-06-28 Woods Equipment Company, A Delaware Corporation Multi-line rotatable fluid coupler
DE102008000036A1 (de) 2008-01-10 2009-07-23 Leica Biosystems Nussloch Gmbh Verfahren zum Anfertigen histologischer Schnitte mit einem Mikrotom

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007131800A1 (fr) * 2006-05-17 2007-11-22 Lehnhoff Hartstahl Gmbh & Co. Kg Dispositif de changement rapide
US7735249B2 (en) 2006-05-17 2010-06-15 Lehnhoff Hartstahl Gmbh & Co. Kg Quick-change device
CN110453742A (zh) * 2019-08-16 2019-11-15 徐工集团工程机械有限公司 一种液压挖掘机全自动快换装置
CN111270717A (zh) * 2020-03-26 2020-06-12 潘建业 锁紧卡盘式的液压挖掘机机具快换装置
CN113294413A (zh) * 2021-06-08 2021-08-24 大族激光科技产业集团股份有限公司 快速连接机构和执行设备

Also Published As

Publication number Publication date
EP1580330A3 (fr) 2006-03-22
EP1580330B1 (fr) 2012-11-07
DE102004015471A1 (de) 2005-10-13

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