EP0405274B1 - Zahnhalter eines auf einer Baggerschaufel befestigbaren Baggerzahnes - Google Patents

Zahnhalter eines auf einer Baggerschaufel befestigbaren Baggerzahnes Download PDF

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Publication number
EP0405274B1
EP0405274B1 EP19900111412 EP90111412A EP0405274B1 EP 0405274 B1 EP0405274 B1 EP 0405274B1 EP 19900111412 EP19900111412 EP 19900111412 EP 90111412 A EP90111412 A EP 90111412A EP 0405274 B1 EP0405274 B1 EP 0405274B1
Authority
EP
European Patent Office
Prior art keywords
tooth
tooth holder
supporting arm
excavator
edge
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
EP19900111412
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0405274A1 (de
Inventor
Peter Eichelberger
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.)
Baz Service AG
Original Assignee
Baz Service AG
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 Baz Service AG filed Critical Baz Service AG
Publication of EP0405274A1 publication Critical patent/EP0405274A1/de
Application granted granted Critical
Publication of EP0405274B1 publication Critical patent/EP0405274B1/de
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
    • 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

Definitions

  • the invention relates to a tooth holder of an excavator tooth attachable to an excavator bucket according to the preamble of claim 1 and a method for preparing the same for attachment to the edge part of an excavator bucket.
  • Excavator teeth which consist of a tooth holder and a tooth tip that can be releasably attached to it, are known in many designs.
  • the tooth tip is a significant part of the excavator tooth subject to wear, which is why it is designed to be replaceable.
  • the holder lying in the shadow of the tooth tip is subject to less wear; however, it has the task of establishing a reliable connection between the tooth tip and the excavator bucket.
  • the holders of the excavator teeth are usually designed so that they lie on the inside of the excavator bucket and are welded to the bucket wall at their edge.
  • the holder could also be welded to the blade wall on the outside.
  • the wall thickness of the bucket wall varies considerably depending on the size of the excavator bucket, different holders have to be produced for the different wall thicknesses.
  • a tooth holder which has an inside and an outside holding arm, the two arms encompassing the edge of the blade. So that an adaptation to different wall thicknesses of the excavator bucket is possible, the outside holding arm is separated from the holder and is only connected to it by welding when the tooth holder is installed. However, making this connection is quite difficult and requires the use of a skilled person.
  • Mantovani discloses a toothed frame fastened in a recess at the front edge of an excavator bucket from two welded-together halves, forming an opening for receiving the rear part of a tooth (6). There is no resemblance to the present tooth holder. It is possible to attach it to spoons with different thicknesses. However, the two-part version of the frame and the incorporation of the recess in the spoon edge require additional work.
  • US-A 1 829 851 O'Fallon Clark, describes an excavator tooth composed of tooth tip and tooth holder.
  • the tooth holder has an inner and an outer holder arm at the edge of the spoon, which are separated by a gap corresponding to the thickness of the edge of the spoon.
  • the tooth can practically only be attached to a spoon edge with a thickness that corresponds to the gap width. Use with spoon edges of other thickness is therefore excluded. With the present tooth holder, however, a practically arbitrary thickness of the spoon edge and problem-free, reliable fastening are possible.
  • the invention is based on the object of further developing a tooth holder of the type described at the outset so that it can be adapted to excavator buckets of different thicknesses, and of specifying a method for its preparation for attachment to the edge part of the excavator bucket.
  • connection part for fastening the tooth holder rear part to an excavator bucket can be removed to the width which corresponds to the wall thickness of the bucket edge.
  • the invention is based on the consideration that any adaptation of the tooth holder to the respective wall thickness can be achieved if the necessary distance between the two holding arms can then be provided when it is certain for which excavator shovel the individual tooth holder is required. Only then is the necessary cutout between the two holding arms, e.g. cut out by flame cutting.
  • the tooth holder shown in FIG. 1 has a holder nose 1, to which a tooth holder rear part 2 connects.
  • a tooth tip 3, which completely surrounds the holder nose 1, is placed on the holder nose 1.
  • a through hole 4 is provided in the holder lug 1, into which a holding pin, e.g. a shear pin can be used, the ends of which protrude into bores 5 of the tooth tip and thus hold the tooth tip 3 in place.
  • the tooth holder rear part 2 has two holding arms, an inside and longer holding arm 7 and an outside and shorter holding arm 8. Between the holding arms 7, 8 there is a slot 9 in which the edge part of an excavator bucket protrudes.
  • the slot 9 has a width which corresponds approximately to the wall thickness of the edge part 10 of the excavator bucket.
  • This slot 9 is filled with material during the manufacture of the tooth holder rear part 2, ie the holding arms 7, 8 are connected to one another in the part of the slot 9 by a connecting part 17. If the excavator shovel on which the rear tooth holder part 2 is to be fastened is now fixed, the corresponding slot 9 is machined.
  • a known method can be used for this, e.g. B. flame cutting.
  • the slot 9 can be cut out with sufficient accuracy so that a reliable attachment of the tooth holder is possible, e.g. by welding the holding arms 7, 8 along their peripheral edge.
  • tooth holder rear part 2 can be used for excavator buckets in which the wall thickness of the edge section 10 is of different sizes. This can significantly reduce the number of tooth holder sizes, so that, for. B. for a wall thickness range of the edge portion 10 of the excavator shovel from about 20 mm to about 55 mm only about 2 different tooth holder sizes are required.
  • the inside, longer holding arm 7 has a pronounced curvature 11 over the area of the end of the edge section 10, which can optionally be interrupted by a longitudinal groove 12, see FIG. 3.
  • the holding arm 7 can also be designed as a solid body; he has to absorb the greater forces than the outside holding arm 8, which can only be about half as long in length as the inside holding arm 7.
  • the outside holding arm 8 has a relatively thin wall thickness, which is reinforced at the longitudinal edges by pronounced ribs 15.
  • the ribs 15 are of such a height that they have the same rib height as a crosspiece 16 which reinforces the profile of the tooth holder. Characterized in that the ribs of the outside holding arm 8 open into the cross bar 16, this is additionally reinforced.
  • the tooth holder is expediently forged from a forged steel, which can be high-alloyed. Since the slot 9 is missing, the tooth holder forms a compact body, being between the inside and the outside holding arm 7, 8, the connecting part 17 extends.
  • the slot 9 is machined in the appropriate width, after which the attachment to the excavator shovel can then take place.
  • the slot 9 can be made in various ways. In addition to the flame cutting already mentioned, machining can also be provided to form the slot 9.

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)
  • Shovels (AREA)
EP19900111412 1989-06-26 1990-06-18 Zahnhalter eines auf einer Baggerschaufel befestigbaren Baggerzahnes Expired - Lifetime EP0405274B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2375/89 1989-06-26
CH237589A CH679939A5 (xx) 1989-06-26 1989-06-26

Publications (2)

Publication Number Publication Date
EP0405274A1 EP0405274A1 (de) 1991-01-02
EP0405274B1 true EP0405274B1 (de) 1994-05-04

Family

ID=4232305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900111412 Expired - Lifetime EP0405274B1 (de) 1989-06-26 1990-06-18 Zahnhalter eines auf einer Baggerschaufel befestigbaren Baggerzahnes

Country Status (4)

Country Link
EP (1) EP0405274B1 (xx)
CH (1) CH679939A5 (xx)
DE (1) DE59005590D1 (xx)
ES (1) ES2052104T3 (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106284482A (zh) * 2016-08-30 2017-01-04 山东明宇重工机械有限公司 一种装载机铲齿及其制备方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103774713B (zh) * 2013-11-26 2016-05-04 广西柳工机械股份有限公司 一种斗齿组件

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1834514A (en) * 1928-11-09 1931-12-01 American Manganese Steel Co Excavating point
US1829851A (en) * 1929-11-25 1931-11-03 American Manganese Steel Co Replaceable thimble point dipper tooth
US2108075A (en) * 1936-05-20 1938-02-15 Bucyrus Erie Co Dipper tooth
DE7443383U (de) * 1974-01-02 1975-05-07 Mantovani T Zahnfassung für Löffel- und Greiferbagger
IT1027392B (it) * 1975-01-28 1978-11-20 Ramella P V Dente per benne di macchine per movimento terra

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106284482A (zh) * 2016-08-30 2017-01-04 山东明宇重工机械有限公司 一种装载机铲齿及其制备方法
CN106284482B (zh) * 2016-08-30 2019-02-12 山东明宇重工机械有限公司 一种装载机铲齿及其制备方法

Also Published As

Publication number Publication date
DE59005590D1 (de) 1994-06-09
CH679939A5 (xx) 1992-05-15
EP0405274A1 (de) 1991-01-02
ES2052104T3 (es) 1994-07-01

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