DE2841523A1 - Tool set for suction dredgers - where steel adaptor plug fits in blind hole in rear end of steel tooth and is retained by wedge - Google Patents

Tool set for suction dredgers - where steel adaptor plug fits in blind hole in rear end of steel tooth and is retained by wedge

Info

Publication number
DE2841523A1
DE2841523A1 DE19782841523 DE2841523A DE2841523A1 DE 2841523 A1 DE2841523 A1 DE 2841523A1 DE 19782841523 DE19782841523 DE 19782841523 DE 2841523 A DE2841523 A DE 2841523A DE 2841523 A1 DE2841523 A1 DE 2841523A1
Authority
DE
Germany
Prior art keywords
steel
head
tooth
hole
pref
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
DE19782841523
Other languages
German (de)
Other versions
DE2841523C2 (en
Inventor
Ruetger Dipl Ing Dr Berchem
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.)
Berchem and Schaberg GmbH
Original Assignee
Berchem and Schaberg GmbH
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 Berchem and Schaberg GmbH filed Critical Berchem and Schaberg GmbH
Priority to DE19782841523 priority Critical patent/DE2841523C2/de
Publication of DE2841523A1 publication Critical patent/DE2841523A1/en
Application granted granted Critical
Publication of DE2841523C2 publication Critical patent/DE2841523C2/de
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808Teeth
    • E02F9/2816Mountings therefor
    • E02F9/2833Retaining means, e.g. pins

Abstract

The tool set consists of a tooth contg. a conical blind hole at its rear, wide end, which has two lugs fitting over an adapter head. Each lug has a hole mating with a transverse hole in the head; and head has a tapering conical plug mating with hole. An elastic insert and a connecting wedge are inserted in holes so the tooth and adapter are prestressed on two ring thrust surfaces formed between plug and hole. Tooth is pref. made of steel contg. 0.45% max C, 0.7-1% Mn, 0.7-2.2% Cr, 0.3-0.6% Mo, 0.5-2.2% Ni, rest Fe, hardened and tempered to tensile strength (TS) 140-200, esp 180 kp/mm2 with elongation (E) above 6%, pref. min. 8% Head (2) is pref. made of steel contg 1.6-2% Mn, 0.6-1.5%V, 0.35-0.5%C, rest Fe, hardened and tempered to Ts above 100 kp/mm2, pref. min. 120 kp/mm2. This design suppresses vibration which is normally transmitted to the suction head causing baring wear and/or fatigue fractures. The steel also resist abrasion.
DE19782841523 1978-09-23 1978-09-23 Expired DE2841523C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782841523 DE2841523C2 (en) 1978-09-23 1978-09-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782841523 DE2841523C2 (en) 1978-09-23 1978-09-23

Publications (2)

Publication Number Publication Date
DE2841523A1 true DE2841523A1 (en) 1980-03-27
DE2841523C2 DE2841523C2 (en) 1982-06-09

Family

ID=6050282

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782841523 Expired DE2841523C2 (en) 1978-09-23 1978-09-23

Country Status (1)

Country Link
DE (1) DE2841523C2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3136077C1 (en) * 1981-09-11 1982-10-28 Berchem & Schaberg Gmbh Rock cutting head for suction excavators or the like.
US4404760A (en) * 1980-04-28 1983-09-20 Esco Corporation Excavating tooth
DE3300467A1 (en) * 1983-01-08 1984-07-19 Berchem & Schaberg Gmbh Device for attaching a cutting tooth to the suction head of a suction head excavator
DE3545018C1 (en) * 1985-12-19 1986-08-28 Hoesch Ag Cutting tooth

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984028A (en) * 1958-07-28 1961-05-16 Renner Mfg Company Excavating bucket digging teeth
FR2032575A5 (en) * 1969-10-28 1970-11-27 Villechenon Louis
DE7603807U1 (en) * 1975-02-21 1977-11-17 Zepf, Hans-Rudolf, Horgen (Schweiz) Bucket tooth on a shovel a baumaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984028A (en) * 1958-07-28 1961-05-16 Renner Mfg Company Excavating bucket digging teeth
FR2032575A5 (en) * 1969-10-28 1970-11-27 Villechenon Louis
DE7603807U1 (en) * 1975-02-21 1977-11-17 Zepf, Hans-Rudolf, Horgen (Schweiz) Bucket tooth on a shovel a baumaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
bd baumaschinendienst, H. 11, Nov. 1976, S. 496 bis 501 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4404760A (en) * 1980-04-28 1983-09-20 Esco Corporation Excavating tooth
DE3136077C1 (en) * 1981-09-11 1982-10-28 Berchem & Schaberg Gmbh Rock cutting head for suction excavators or the like.
NL8203359A (en) * 1981-09-11 1983-04-05 Berchem & Schaberg Gmbh Stone cutting head, especially for a suction dredger.
DE3300467A1 (en) * 1983-01-08 1984-07-19 Berchem & Schaberg Gmbh Device for attaching a cutting tooth to the suction head of a suction head excavator
DE3545018C1 (en) * 1985-12-19 1986-08-28 Hoesch Ag Cutting tooth
EP0232468A1 (en) * 1985-12-19 1987-08-19 Hoesch Aktiengesellschaft Cutter head tooth

Also Published As

Publication number Publication date
DE2841523C2 (en) 1982-06-09

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Legal Events

Date Code Title Description
OAP Request for examination filed
OD Request for examination
D2 Grant after examination
8339 Ceased/non-payment of the annual fee