WO2019185587A1 - Dent d'excavateur pour un excavateur continu à cuillers - Google Patents

Dent d'excavateur pour un excavateur continu à cuillers Download PDF

Info

Publication number
WO2019185587A1
WO2019185587A1 PCT/EP2019/057512 EP2019057512W WO2019185587A1 WO 2019185587 A1 WO2019185587 A1 WO 2019185587A1 EP 2019057512 W EP2019057512 W EP 2019057512W WO 2019185587 A1 WO2019185587 A1 WO 2019185587A1
Authority
WO
WIPO (PCT)
Prior art keywords
tooth
receiving shaft
excavator
tooth head
receiving
Prior art date
Application number
PCT/EP2019/057512
Other languages
German (de)
English (en)
Inventor
Viktor Raaz
Tomasz Kwiatkowski
Original Assignee
Thyssenkrupp Industrial Solutions Ag
Thyssenkrupp 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 Thyssenkrupp Industrial Solutions Ag, Thyssenkrupp Ag filed Critical Thyssenkrupp Industrial Solutions Ag
Priority to EP19713780.5A priority Critical patent/EP3775408A1/fr
Publication of WO2019185587A1 publication Critical patent/WO2019185587A1/fr

Links

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
    • E02F9/2866—Small metalwork for digging elements, e.g. teeth scraper bits for rotating digging elements

Definitions

  • the invention includes the technical teaching that the tooth head and the receiving shaft to form the excavator tooth are materially interconnected.
  • the core of the invention is a simple construction of an excavator tooth with a material connection between the tooth tip and the Shank based on a welded joint. It has been found that with a corresponding dimensioning of the welded joint, a sufficient strength of the connection between the tooth head and the receiving shaft can be created so that even very hard grave materials can be removed without causing a failure of the excavator tooth.
  • the main advantage of this is that the tooth head and the receiving shaft need not have the same materials, and the tooth head and the receiving shaft can be manufactured with different manufacturing processes. Thus, there is advantageously the possibility that the tooth head has a higher hardness than the receiving shaft and that the receiving shaft has a higher toughness than the tooth head.
  • weld bevels and the like can be edited, for example by grinding or over-milling.
  • high accuracy requirements do not have to be met.
  • the important thing is that a scaling is released from the surface before the weld is to be made.
  • the projection particularly advantageously has a roof surface, and the roof surface is delimited by side surfaces which can rest against side surfaces of the recess in which the side surfaces on the projection and the side surfaces on the recess are complementary to one another.
  • the complementary training in the context of the invention relates to a key-lock principle or a spring-groove principle, in particular such that the complementary mutually formed surfaces can lie substantially flat against each other.
  • the welding gap has, for example, a triangular cross-sectional area, so that the weld can be generated in a simple manner from the outside, in particular completely, and so that high transverse forces can be transmitted between the tooth head and the receiving shaft.
  • Another advantage of the circumferential weld is that it can be separated with a corresponding tool to solve the tooth head of the receiving shaft again, in particular to provide the excavator tooth with a new or renewed tooth head. Subsequently, the weld can be restored again.
  • the receiving surface 12 is bounded with a weld bevel 14, so that the flat surface 12 is smaller than the flat surface of the end face 13. If the receiving surface 12 and the end face 13 brought flat to each other, created by the weld bevel 14 a circumferential, triangular throat, for welding the Tooth head 10 can be filled with the receiving shaft 11 with weld metal.
  • the excavator tooth 1 allows the selection of the material for the tooth head 10 regardless of the selection of the material for the receiving shaft 11.
  • the manufacturing process for the preparation of the tooth head 10 and the production of the receiving shaft 11 can be chosen differently.
  • the tooth head 10 a have much higher hardness than the receiving shaft 1 1 to withstand contact with, for example, very hard grave material.
  • the receiving shaft 1 1 has a material which has a very high toughness, which is higher than the toughness of the tooth head 10.
  • the tooth head 10 may be manufactured by means of a casting process, however, the receiving shaft 11 may be made by a forging process.
  • the projection 15 has a roof surface 17, and the roof surface 17 is limited with side surfaces 18 which are complementary to side surfaces 19 of the recess 16.
  • the weld 21 can be generated in a triangular, circumferential groove, which is formed by the geometric configuration of the side surface 18 of the projection 15 and the side surfaces 19 of the recess 16.
  • the side surfaces 18 have a wider dimension than the side surfaces 19 of the recess 16, so that when arranging the projection 15 in the recess 16, the side surfaces 18 project beyond a circumferential, the recess 16 bordering flat surface.
  • the advantage of the formation of the receiving surface 12 with the projection 15 and the end face 13 with the recess 16 is that in the sense of a tongue and groove depression a precisely fitting arrangement of the tooth head 10th to the Shaft 1 1 can be done so that subsequently the weld 21 is produced in a simple manner.

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)

Abstract

La présente invention concerne une dent excavateur (1) pour une cuiller d'un excavateur continu à cuillers, comprenant une tête de dent (10), destinée à venir en prise avec le matériau d'excavation, et une tige réceptrice (11), destinée à être placée dans ou sur un logement d'une cuiller de l'excavateur continu à cuillers. Selon l'invention, la tête de dent (10) et la tige réceptrice (11) sont intégralement reliées l'une à l'autre par liaison de matière, ladite liaison par liaison de matière étant formée au moyen d'une liaison soudée. En outre, l'invention concerne un procédé de remplacement d'une telle dent d'excavateur (1) sur une cuiller d'un excavateur continu à cuillers.
PCT/EP2019/057512 2018-03-28 2019-03-26 Dent d'excavateur pour un excavateur continu à cuillers WO2019185587A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19713780.5A EP3775408A1 (fr) 2018-03-28 2019-03-26 Dent d'excavateur pour un excavateur continu à cuillers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018204775.8 2018-03-28
DE102018204775.8A DE102018204775A1 (de) 2018-03-28 2018-03-28 Baggerzahn für einen Schaufelradbagger

Publications (1)

Publication Number Publication Date
WO2019185587A1 true WO2019185587A1 (fr) 2019-10-03

Family

ID=65951581

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/057512 WO2019185587A1 (fr) 2018-03-28 2019-03-26 Dent d'excavateur pour un excavateur continu à cuillers

Country Status (3)

Country Link
EP (1) EP3775408A1 (fr)
DE (1) DE102018204775A1 (fr)
WO (1) WO2019185587A1 (fr)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3606471A (en) * 1969-03-25 1971-09-20 Jetco Inc Trenching devices
WO1983000826A1 (fr) * 1981-09-08 1983-03-17 Leonard, James, F. Outil pour l'installation de dents de scarificateur
DE3720855C1 (en) 1987-03-07 1988-02-25 Hoesch Ag Excavator tooth
ES2005287A6 (es) * 1986-09-09 1989-03-01 Kennametal Inc Diente de corte.
US5224282A (en) 1992-01-21 1993-07-06 Harnischfeger Corporation Tooth assembly for a digger bucket
EP0681630A1 (fr) 1993-02-02 1995-11-15 Esco Corporation Dent d'excavation
EP0908601A1 (fr) * 1997-10-07 1999-04-14 Fansteel Inc. Plaquette de coupe pour outil de coupe
EP1522636A1 (fr) * 2003-10-09 2005-04-13 Jan De Nul N.V. Robot pour échanger les dents d'une tête de forage sur dragueuse
WO2009003233A1 (fr) * 2007-07-02 2009-01-08 The University Of Sydney Tête de coupe et son outil
AU2006284527B2 (en) * 2005-08-24 2010-01-07 James A Calderwood An improved ripper boot
CN202450568U (zh) 2012-02-27 2012-09-26 江西耀升工贸发展有限公司 一种新型硬质合金挖掘机斗齿

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740212A (en) * 1955-09-30 1956-04-03 Dwight E Werkheiser Rooter tooth assembly
DE3500261A1 (de) * 1985-01-05 1986-07-10 Bergwerksverband Gmbh, 4300 Essen Gewinnungswerkzeug
CA2636939A1 (fr) * 2008-07-07 2010-01-07 James A. Calderwood Outil de penetration de surface comprenant des pieces rapportees a haute resistance

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3606471A (en) * 1969-03-25 1971-09-20 Jetco Inc Trenching devices
WO1983000826A1 (fr) * 1981-09-08 1983-03-17 Leonard, James, F. Outil pour l'installation de dents de scarificateur
ES2005287A6 (es) * 1986-09-09 1989-03-01 Kennametal Inc Diente de corte.
DE3720855C1 (en) 1987-03-07 1988-02-25 Hoesch Ag Excavator tooth
US5224282A (en) 1992-01-21 1993-07-06 Harnischfeger Corporation Tooth assembly for a digger bucket
EP0681630A1 (fr) 1993-02-02 1995-11-15 Esco Corporation Dent d'excavation
EP0908601A1 (fr) * 1997-10-07 1999-04-14 Fansteel Inc. Plaquette de coupe pour outil de coupe
EP1522636A1 (fr) * 2003-10-09 2005-04-13 Jan De Nul N.V. Robot pour échanger les dents d'une tête de forage sur dragueuse
AU2006284527B2 (en) * 2005-08-24 2010-01-07 James A Calderwood An improved ripper boot
WO2009003233A1 (fr) * 2007-07-02 2009-01-08 The University Of Sydney Tête de coupe et son outil
CN202450568U (zh) 2012-02-27 2012-09-26 江西耀升工贸发展有限公司 一种新型硬质合金挖掘机斗齿

Also Published As

Publication number Publication date
DE102018204775A1 (de) 2019-10-02
EP3775408A1 (fr) 2021-02-17

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