EP2288760B1 - Verschleissgliedverbindungsvorrichtung für einen baggereimer - Google Patents

Verschleissgliedverbindungsvorrichtung für einen baggereimer Download PDF

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Publication number
EP2288760B1
EP2288760B1 EP09731426A EP09731426A EP2288760B1 EP 2288760 B1 EP2288760 B1 EP 2288760B1 EP 09731426 A EP09731426 A EP 09731426A EP 09731426 A EP09731426 A EP 09731426A EP 2288760 B1 EP2288760 B1 EP 2288760B1
Authority
EP
European Patent Office
Prior art keywords
pin
pocket
wear member
abutment portion
adapter
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.)
Not-in-force
Application number
EP09731426A
Other languages
English (en)
French (fr)
Other versions
EP2288760A1 (de
Inventor
Tor Torgrimsen
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.)
Komatsu KVX LLC
Original Assignee
Komatsu KVX LLC
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 Komatsu KVX LLC filed Critical Komatsu KVX LLC
Publication of EP2288760A1 publication Critical patent/EP2288760A1/de
Application granted granted Critical
Publication of EP2288760B1 publication Critical patent/EP2288760B1/de
Not-in-force 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
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E02F9/2833—Retaining means, e.g. pins
    • 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
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E02F9/2825—Mountings therefor using adapters
    • 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
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2883—Wear elements for buckets or implements in general

Definitions

  • a wear member connector is provided. It is, more particularly, a wear member connector in which a wear member is connected to an adapter by means of a pin and pocket connection, in which the pin of the adapter is in the pocket of the wear member.
  • a wear member for example in the form of a replaceable tooth cap on a digging bucket, is often connected to the digging bucket by means of an adapter which is secured to the front piece of the digging bucket.
  • the adapter is generally formed with a pin which fits complementarily into a pocket in the tooth cap.
  • the tooth cap is often moulded and fitted by hand on the adapter, on which it is typically held in place by means of a locking pin or similar.
  • US-engage 2006/0265916 describes a wear assembly that includes an adapter with a nose, a wear member with a socket to receive the nose, and a lock to secure the wear member to the adapter.
  • the nose and socket include complementary rails and grooves that vertically diverge as they extend from the front of the nose.
  • the lock can have a tapered construction. This document forms the basis for the preamble of the independent claim.
  • US-document 3371437 concerns a locking device in the form of a bolt with a half round head for securing a removable digger tooth point to a support shrank.
  • the bolt is disposed in the shrank with the head interiorly of the assembled tooth point and shrank with the head rotatable from nesting engagement in a registering socket in the the tooth point and the point and shrank are secured together by the bolt after moving the socket out of register.
  • US document 5909962 describes a tip assembly for an edge of an implement of a work machine that includes an adapter secured to the edge of the implement.
  • the adapter has an adapter aperture extending therethrough.
  • the tip assembly also includes an implement tip having a tip aperture extending therethrough, the implement tip is positioned relative to the adapter such that the adapter aperture and the tip aperture align to form a passageway.
  • the tip assembly further includes a sleeve subassembly positioned within the passageway.
  • the sleeve subassembly includes (i) a first member, (ii) an intermediate member, and (iii) a second member.
  • the tip assembly includes a fastener mechanically coupled to the sleeve subassembly wherein rotation of the fastener causes (i) the intermediate member to move in a first direction, and (ii) the first and second members to move in a second direction so as to tightly secure the sleeve subassembly within the adapter aperture.
  • the wear on the tooth cap is less unfavourable than wear on the adapter because the tooth cap can easily be replaced. Wear on the adapter, however, may lead to too poor a fit against the tooth cap or to breakage and need for replacement the adapter.
  • the replacing of a welded adapter may constitute half a day's work.
  • the invention has for its object to remedy or reduce at least one of the drawbacks of the prior art.
  • a wear member connector in which a wear member is connected to an adapter by means of a pin and pocket connection, the pin of the adapter being in the pocket of the wear member, and the wear member being characterized by the pin abutting against the pocket at a first abutment portion, a second abutment portion and a third abutment portion.
  • an adapter is meant, in this connection, any component which may be used to hold a wear member.
  • the second abutment portion When the pin is placed in the pocket, the second abutment portion is on the opposite side of the pin between the first abutment portion and the third abutment portion. Similarly, the second abutment portion is located axially between the first abutment portion and the third abutment portion relative to the direction of insertion of the pin into the pocket. Thereby, the pin rests steadily against the pocket.
  • a preferred embodiment of the wear member connector is that the abutment portions are at different depths in the pocket, alternatively at different distances from the end portion of the pin.
  • a preferred embodiment of the wear member connector is that at least one of the abutment portions is placed transversely to the direction of insertion of the pin into the pocket.
  • At least one of the abutment portions extends over more than one side of the pocket or pin. If the pin and pocket connection has a circular cross section, an abutment portion may extend along an arc of the circumference. If the pin and pocket connection is given a cornered, for example square, cross section, the abutment portion may extend over more than one side.
  • At least one of the abutment portions is divided.
  • An abutment portion may be divided by, for example, openings, recesses or hollow keys, or it may be divided for reasons of production.
  • each abutment portion is formed by an elevation on the pin or in the pocket.
  • protrusions in the pocket may contribute to a practical design of the wear member connector.
  • the wear member connector provided makes the wear member rest against its attachment at three defined portions, which enables steady and safe attachment of the wear member. If, additionally, the connector is formed with a conicity, strains during work will contribute to driving the wear member connector even harder together, so that wear between the components is substantially prevented.
  • the reference numeral 1 indicates a wear member in the form of a tooth cap which is connected to the pin 4 of an adapter 2.
  • the adapter 2 is secured to the front piece 6 of a bucket, not shown.
  • the pin 4 is given a shape like a frustum of a pyramid and has its smallest cross section at its projecting end portion 8.
  • the pin 4 is formed with a through cut-out 10 for a locking pin 12.
  • a stop screw 14 is threaded into the end portion 8.
  • the wear member 1 is formed with a pocket 16 which fits complementarily over the pin 4.
  • the wear member 1 is provided with through openings 18 which correspond to the cut-out 10 of the pin 4 in such a way that the locking pin 12, when in the openings 18 and cut-out 10, prevents the wear member 1 from being movable off the pin 4.
  • first abutment portion 20 Near the bottom of the pocket 16 is arranged a first abutment portion 20 in the form of a protrusion which builds out somewhat from a first side 22 and a second side 24 inside the pocket 16, see figure 3 .
  • the first abutment portion 20 is arranged to abut against the pin 4, whereas a third side 26 and a fourth side 28 have a clearance to the pin 4 in the section IIa-IIa.
  • a second abutment portion 30 Nearly halfway into the pocket 16 is arranged a second abutment portion 30 in the form of a protrusion which builds out somewhat from the third side 26 and fourth side 28 of the pocket 16, see figure 4 .
  • the second abutment portion 30 is arranged to abut against the pin 4, whereas the first side 22 and the second side 24 have a clearance to the pin 4 in the section IIb-IIb.
  • a third abutment portion 32 in the form of a protrusion which builds out somewhat from the first side 22 and the second side 24 inside the pocket 16, see figure 5 .
  • the third abutment portion 32 is arranged to bear against the pin 4, whereas the third side 26 and the fourth side 28 have a clearance to the pin 4 in the section IIc-IIc.
  • the pin 4 has abutments against the first side 22 and the second side 24 by the first abutment portion 20 and the third abutment portion 32, and against the third side 26 and the fourth side 28 by the second abutment portion 30.
  • This preferred embodiment provides a very steady and defined contact between the wear member 1 and the adapter 2.
  • the stop screw 14 has been built out somewhat from the end portion 8 to prevent the wear member 1 from being moved too far in on the pin 4 during work, which might lead to radial overloading of the wear member 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Drawers Of Furniture (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Vehicle Body Suspensions (AREA)

Claims (7)

  1. Baggerschaufelverschleisseinheit umfassend ein Verschleisselement (1) und einen Adapter (2), wobei der Adapter (2) an einem Frontstück (6) der Baggerschaufel befestigbar ist und das Verschleisselement (1) mittels einer Verbindung aus einem Stift (4) und einer Ausnehmung (16) mit dem Adapter (2) verbunden ist, in welcher der Stift (4) ein integraler Bestandteil des Adapters (2) und die Ausnehmung (16) ein integraler Bestandteil des Verschleisselements (1) ist, dadurch gekennzeichnet, dass der Stift (4) an einem ersten Anlageabschnitt (20), einem zweiten Anlageabschnitt (30) und einem dritten Anlageabschnitt (32) an der Ausnehmung (16) anliegt, wobei die Anlageabschnitte (20, 30, 32) vom Stift (4) oder von einer Seite (22, 24, 26, 28) der Ausnehmung abragen, wobei der zweite Anlageabschnitt (30) relativ zum ersten Anlageabschnitt (20) und dritten Anlageabschnitt (32) auf der gegenüberliegende Seite des Stiftes (4) ist, wobei, wenn der Stift (4) in der Ausnehmung (16) platziert ist, der zweite Anlageabschnitt (30) relativ zur Einführungsrichtung des Stifts (4) in die Ausnehmung (16) axial zwischen dem ersten Anlageabschnitt (20) und dem dritten Anlageabschnitt (32) positioniert ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Anlageabschnitte (20, 30, 32) auf unterschiedlichen Tiefen in der Ausnehmung (16) angeordnet sind.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Anlageabschnitte mit unterschiedlichen Abständen vom Endabschnitt (8) des Stifts (4) platziert sind.
  4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass mindestens einer der Anlageabschnitte (20, 30, 32) quer zur Einführungsrichtung des Stifts (4) in der Ausnehmung (16) positioniert ist.
  5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sich mindestens einer der Anlageabschnitte (20, 30, 32) über mehr als eine Seite (22, 24, 26, 28) der Ausnehmung (16) oder des Stiftes (4) erstreckt.
  6. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass mindestens einer der Anlageabschnitte (20, 30, 32) unterteilt ist.
  7. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass jeder Anlageabschnitt (20, 30, 32) durch eine Erhöhung auf dem Stift (4) oder in der Ausnehmung (16) geformt ist.
EP09731426A 2008-04-10 2009-04-02 Verschleissgliedverbindungsvorrichtung für einen baggereimer Not-in-force EP2288760B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20081744A NO334868B1 (no) 2008-04-10 2008-04-10 Skuffesliteenhet omfattende en slitedel og en adapter
PCT/NO2009/000125 WO2009126045A1 (en) 2008-04-10 2009-04-02 Wear member connection device for a digging bucket

Publications (2)

Publication Number Publication Date
EP2288760A1 EP2288760A1 (de) 2011-03-02
EP2288760B1 true EP2288760B1 (de) 2013-04-03

Family

ID=40651542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09731426A Not-in-force EP2288760B1 (de) 2008-04-10 2009-04-02 Verschleissgliedverbindungsvorrichtung für einen baggereimer

Country Status (3)

Country Link
EP (1) EP2288760B1 (de)
NO (1) NO334868B1 (de)
WO (1) WO2009126045A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9279231B2 (en) 2013-04-19 2016-03-08 Caterpillar Global Mining Llc Removable liner assembly for a dipper
CN106638759A (zh) * 2016-12-23 2017-05-10 熊丽 一种改进了连接结构的挖掘机斗齿组件

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003048462A1 (en) * 2001-12-03 2003-06-12 Hensley Industries, Inc. Excavating tooth assembly with rotatable connector pin structure

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371437A (en) 1965-04-28 1968-03-05 Mid Continent Steel Casting Co Locking device for digger tooth
US6735890B2 (en) 2001-07-06 2004-05-18 Esco Corporation Wear assembly
FR2500030A2 (fr) * 1981-02-16 1982-08-20 Poncin Andre Perfectionnements aux dents de godets de pelles mecaniques
US5909962A (en) 1997-11-26 1999-06-08 Caterpillar Inc. Tip assembly for an edge of an implement of a work machine
FR2846017B1 (fr) * 2002-10-17 2005-02-11 Afe Metal Dispositif de liaison d'accouplement entre des pieces d'usure aux extremites d'outils receptacles en usage sur les engins de travaux publics
US7032334B2 (en) * 2004-05-28 2006-04-25 Trn Business Trust System and method for coupling excavation equipment components

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003048462A1 (en) * 2001-12-03 2003-06-12 Hensley Industries, Inc. Excavating tooth assembly with rotatable connector pin structure

Also Published As

Publication number Publication date
EP2288760A1 (de) 2011-03-02
WO2009126045A1 (en) 2009-10-15
NO20081744L (no) 2009-10-12
NO334868B1 (no) 2014-06-23

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