EP2362024A2 - Schnellkupplung für ein Grab- und Ladewerkzeug - Google Patents

Schnellkupplung für ein Grab- und Ladewerkzeug Download PDF

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Publication number
EP2362024A2
EP2362024A2 EP11155797A EP11155797A EP2362024A2 EP 2362024 A2 EP2362024 A2 EP 2362024A2 EP 11155797 A EP11155797 A EP 11155797A EP 11155797 A EP11155797 A EP 11155797A EP 2362024 A2 EP2362024 A2 EP 2362024A2
Authority
EP
European Patent Office
Prior art keywords
quick coupling
tool
lock
connecting part
coupling
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.)
Withdrawn
Application number
EP11155797A
Other languages
English (en)
French (fr)
Inventor
Kaj Dam-Rasmussen
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.)
Viby Attachment Worldwide AS
Original Assignee
Viby Attachment Worldwide AS
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 Viby Attachment Worldwide AS filed Critical Viby Attachment Worldwide AS
Publication of EP2362024A2 publication Critical patent/EP2362024A2/de
Withdrawn legal-status Critical Current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
    • E02F3/3613—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with means for absorbing any play therebetween
    • 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
    • E02F3/3631—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 transversal 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
    • E02F3/3636—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using two or four movable transversal pins
    • 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
    • E02F3/364—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using wedges
    • 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 present invention concerns a quick coupling for a tool, e.g. a digger or loading bucket, and of the kind indicated in the preamble of claim 1.
  • Quick couplings of this kind are widely used for the purpose of rapidly and easily changing between different implements, e.g. between diggers with different widths or between digger and loading bucket.
  • the quick coupling may include a manually operated locking mechanism requiring that the machine operator leaves the operator's cabin, or a remotely controlled locking mechanism that may be operated from the cabin and which, for example, may comprise a hydraulic cylinder.
  • the invention has the object of providing an improved quick coupling for a digging or loading machine of the kind mentioned in the introduction, and which by means of simple measures enables achieving good function and extraordinary safety against unintended release of the tool.
  • the quick coupling according to the invention is characterised in that it further includes a safety lock adapted to provide an additional secure locking function between the quick coupling and the connecting part of the tool.
  • the quick coupling according to the invention is suitably designed such that the safety lock is constituted by at least one, preferably hydraulic, locking cylinder which is fastened to the quick coupling, and which includes a lock piston adapted to interact with a complementary lock socket formed in the connecting part of the tool.
  • the quick coupling according to the invention is preferably designed such that the safety lock is constituted by a double acting hydraulic locking cylinder which is fastened to the quick coupling, and which includes two lock pistons adapted to interact with complementary lock sockets formed at each their side in the connecting part of the tool.
  • the quick coupling according to the invention may advantageously be designed such that the safety lock is constituted by two joined hydraulic locking cylinders which are fastened to the quick coupling, and which include two lock pistons adapted to interact with complementary lock sockets formed at each their side in the connecting part of the tool.
  • the quick coupling according to the invention may particularly suitably be designed such that the two joined locking cylinders are disposed side by side and designed with a common inlet connection for hydraulic pressure liquid.
  • the quick coupling according to the application may advantageously be designed such that at opposing outer sides and in the vicinity of the lock sockets, the connecting part of the tool is provided with at least one projecting collar.
  • the quick coupling may advantageously be designed such that the lock sockets are constituted by elongated central lock holes that are formed in opposing sides of the connecting part, and which extend substantially in parallel with a longitudinal edge part of the connecting part.
  • the connecting parts at each their side of the tool may hereby be designed identical whereby production and storage are simplified as well.
  • the quick coupling according to the application may further be designed such that at opposing outer sides and in the vicinity of the elongated lock holes, the connecting part of the tool is provided with projecting collars along opposing sides of the lock holes.
  • the quick coupling is designed such that the projecting collars are formed with outwardly bent end parts.
  • the quick coupling 2 shown in Fig. 1 includes two parallel bearing plates 4 with bearings 6, 8 provided for mounting the quick coupling 2 at steel plate support holders 4 projecting at an outer end of a digger or loading arm, or to connect a yoke for a hydraulic cylinder for pivoting the quick coupling and the tool, respectively, e.g. a digger or a loading bucket.
  • the quick coupling 2 is designed with hook-shaped coupling parts 10 which are adapted to grip around a first transverse connecting rod 12 that extend between plate-shaped connecting parts 14 ( Figs. 3 , 4 ) which at longitudinal edge parts 16 are adapted for being welded to a back side of the tool, e.g. a digger or a loading bucket, with such spacing that the quick coupling 2 can be inserted between the connecting parts 14 ( Figs. 2 , 5, 6 ).
  • a hydraulic cylinder 22 is activated such that a hydraulic piston 24 displaces a double lock wedge 26 to a position behind the connecting rod 20, such that the latter is pressed against the abutment faces 18, whereby the connecting parts 14 and the tool are securely connected to the quick coupling 2.
  • the quick coupling 2 is also provided with at least one safety lock which has the task of establishing an extra mechanical connection between the connecting parts 14 and the quick coupling 2, why it is provided with a double acting safety lock 28 consisting of two joined hydraulic locking cylinders 30, 32 with lock pistons 34, 36 and lock pins 38, 40 ( Figs. 7, 8 ). At a back side, the latter are both actuated by strong compression springs 42, 44 that have the task of ensuring correct locking engagement between the lock pins 38, 40 and lock sockets 46, 48 complementary therewith and formed in connection with the connecting parts 14 - also in case of missing hydraulic liquid pressure.
  • the safety lock 28 is self-locking in such a way that locking engagement is established by pressure relief of the hydraulic locking cylinders 30, 32, i.e. the locking engagement is maintained if the hydraulic liquid pressure disappears, or put in other words, a hydraulic liquid pressure has to be present in order to deactivate the locking engagement.
  • the safety lock 28 is preferably designed such that the hydraulic locking cylinders 30, 32 are joined and disposed mutually off-set side by side such that the total built-in length is minimised.
  • the safety lock 28 may be achieved that even relatively small quick couplings with less spacing between the bearing plates 4 may be equipped with safety locks according to the invention.
  • Fig. 9 shows an alternative design of a safety lock 50 with greater built-in length and two lock pins 52, 54 arranged in continuation of each other, and which are operated by a common, floatingly arranged, locking cylinder 56 with built-in compression spring 58.

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)
EP11155797A 2010-02-26 2011-02-24 Schnellkupplung für ein Grab- und Ladewerkzeug Withdrawn EP2362024A2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DKPA201070074 2010-02-26

Publications (1)

Publication Number Publication Date
EP2362024A2 true EP2362024A2 (de) 2011-08-31

Family

ID=44117257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11155797A Withdrawn EP2362024A2 (de) 2010-02-26 2011-02-24 Schnellkupplung für ein Grab- und Ladewerkzeug

Country Status (1)

Country Link
EP (1) EP2362024A2 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2686490A1 (de) * 2011-03-17 2014-01-22 Steelwrist AB Schnellkupplung für eine erdbewegungsmaschine
EP3040482A4 (de) * 2013-08-30 2017-04-19 Volvo Construction Equipment AB Schnellkupplung für baumaschine
DE102016014905B3 (de) * 2016-12-15 2018-02-15 Markus Riedlberger Werkzeugadapter mit einer Vorrichtung zur Verriegelungskontrolle einer Schnellwechselvorrichtung für Baugeräte
CN114319477A (zh) * 2022-03-14 2022-04-12 徐州巴特工程机械股份有限公司 一种挖掘机用液压式快换连接器

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2686490A1 (de) * 2011-03-17 2014-01-22 Steelwrist AB Schnellkupplung für eine erdbewegungsmaschine
EP2686490A4 (de) * 2011-03-17 2014-10-15 Steelwrist Ab Schnellkupplung für eine erdbewegungsmaschine
EP3040482A4 (de) * 2013-08-30 2017-04-19 Volvo Construction Equipment AB Schnellkupplung für baumaschine
DE102016014905B3 (de) * 2016-12-15 2018-02-15 Markus Riedlberger Werkzeugadapter mit einer Vorrichtung zur Verriegelungskontrolle einer Schnellwechselvorrichtung für Baugeräte
CN114319477A (zh) * 2022-03-14 2022-04-12 徐州巴特工程机械股份有限公司 一种挖掘机用液压式快换连接器
CN114319477B (zh) * 2022-03-14 2022-05-17 徐州巴特工程机械股份有限公司 一种挖掘机用液压式快换连接器

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