EP0439821B1 - Schneidkrone für Bohrrohre mit einfach auswechselbaren Zähnen - Google Patents

Schneidkrone für Bohrrohre mit einfach auswechselbaren Zähnen Download PDF

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Publication number
EP0439821B1
EP0439821B1 EP90125346A EP90125346A EP0439821B1 EP 0439821 B1 EP0439821 B1 EP 0439821B1 EP 90125346 A EP90125346 A EP 90125346A EP 90125346 A EP90125346 A EP 90125346A EP 0439821 B1 EP0439821 B1 EP 0439821B1
Authority
EP
European Patent Office
Prior art keywords
teeth
sockets
cutting
tooth
cutting crown
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
EP90125346A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0439821A1 (de
Inventor
Kurt Blaschke
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.)
STAHL- und APPARATEBAU HANS LEFFER GmbH
Original Assignee
STAHL- und APPARATEBAU HANS LEFFER 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 STAHL- und APPARATEBAU HANS LEFFER GmbH filed Critical STAHL- und APPARATEBAU HANS LEFFER GmbH
Priority to AT90125346T priority Critical patent/ATE95889T1/de
Publication of EP0439821A1 publication Critical patent/EP0439821A1/de
Application granted granted Critical
Publication of EP0439821B1 publication Critical patent/EP0439821B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
    • E21B10/485—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type with inserts in form of chisels, blades or the like
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable

Definitions

  • the invention relates to a cutting crown according to the preamble of claim 1 for drill pipes for drilling a cased bore, for example for pile foundations or well bores; (see e.g. DE-A-537 686).
  • a milling drum for road milling machines is also known, with recesses into which interchangeable milling teeth are inserted, and which is characterized in that the recess consists of an inwardly tapering lower and an upper, in cross-sectional dimensions Consistent part, which ends on the outer surface of the roller, and that the milling tooth consists of a lower conical in the frustoconical part of the recess and an upper part which has a cross-section matching the cross section of the upper part of the recess.
  • the present invention has for its object to provide a cutting crown which allows the necessary maintenance or repair work to be carried out with relatively simple means and quickly on site, and in which the teeth in the very limited wall thickness of the front area can be used interchangeably.
  • a very important further advantage of the measure according to the invention is the possibility of quickly and easily adapting to different soil conditions on site by exchanging the teeth for a set of other teeth, wherein there is also the possibility of a large number of possible and suitable ones without great effort appearing and in particular also to use novel tooth shapes.
  • Exchangeable teeth used in sleeves are already known for augers and excavators, but they have correspondingly more favorable space conditions the arrangement and accommodation of the sleeve and tooth than is the case with the cutting crown according to the invention, in which only a very limited wall thickness is available for the accommodation. It was therefore feared that the teeth could not withstand the stress and, in particular, break out in the relatively rough operation to which such cutting crowns are subjected.
  • interchangeable teeth according to the invention can be adapted advantageously and with little effort to a different nature of the soil to be drilled, the experts went to the possibility of taking the known measure in sleeves interchangeable teeth can also be used on cutting crowns, so far carelessly over.
  • the tongue-shaped sleeve 1 is provided with a bevel on its front and back along its edge, which is welded to the correspondingly shaped recess in the base body of the cutting crown, not shown. As indicated by the dashed lines, the continuous truncated pyramid-shaped recess 2 is made in the sleeve 1. Furthermore, the through hole 3 is provided in the sleeve.
  • the sleeve 1 could also be designed differently, for example rectangular, trapezoidal or the like, and accordingly the cutouts in the base body of the cutting crown.
  • the extension could also be designed differently than shown, for example as a truncated pyramid-shaped blind hole, but also with another suitable cross-sectional shape.
  • the bore 3 which could have a different, for example rectangular or square, cross-sectional shape instead of the circular cross-section, although the cylindrical cross-sectional shape shown is particularly simple in terms of production technology.
  • the one-piece tooth 4 has the tooth base 5, which is formed in the shape of a truncated pyramid with the recess 2 of the sleeve 1, and the tooth head 7 adjoining this by means of the step-shaped shoulder 6.
  • the through hole 8 is made, which in each case one with the Bore 3 of the sleeve 1 has a matching cross-sectional shape.
  • the tooth 3 is inserted with its foot 5 into the recess 2 of the sleeve 1 so that the bore 8 is exactly aligned with the bore 3 of the sleeve 1, so that subsequent insertion of an adapter sleeve, not shown here, a grooved pin or the like If necessary, lock sleeve 1 and tooth 4 rigidly together.
  • the shape of the tooth head shown in FIGS. 2a and 2b and 3 and 4 is only exemplary and can be varied in different ways.
  • the step-shaped heel 6 can be made more or less wide, or it can be dispensed with entirely.
  • the tooth head can also have a cross-sectional shape other than that shown, depending on the type of soil for which it is to be used.
  • the cutting surface 12 shown can be armored from a particularly suitable special material or that the entire tooth tip 7 is made uniformly from one and the same material, for example from Widia steel, or reinforced with soldered Widia pins can.
  • the tooth 4 is inserted with its foot 5 in the recess 2 of the sleeve 1 with the shoulder 6 and the tooth base 5 and the sleeve 1 by means of the clamping sleeve 9 inserted into the holes 3 and 8, in their place a solid notch pin or the like could also be provided, releasably connected to one another again.
  • the sleeve 1 is welded along its outer edge 11 to the cutting shoe 10 of the cutting crown, which is otherwise not shown.
  • FIG. 6 which shows the sleeve 1 according to FIG. 1a with the tooth 4 inserted therein according to FIG. 2a, it can be seen that the tooth head with its cutting surface 12 projects beyond the outer surface 13 of the sleeve 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP90125346A 1990-02-01 1990-12-22 Schneidkrone für Bohrrohre mit einfach auswechselbaren Zähnen Expired - Lifetime EP0439821B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90125346T ATE95889T1 (de) 1990-02-01 1990-12-22 Schneidkrone fuer bohrrohre mit einfach auswechselbaren zaehnen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4002907 1990-02-01
DE4002907A DE4002907A1 (de) 1990-02-01 1990-02-01 Schneidkrone fuer bohrrohre mit einfach auswechselbaren zaehnen

Publications (2)

Publication Number Publication Date
EP0439821A1 EP0439821A1 (de) 1991-08-07
EP0439821B1 true EP0439821B1 (de) 1993-10-13

Family

ID=6399180

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125346A Expired - Lifetime EP0439821B1 (de) 1990-02-01 1990-12-22 Schneidkrone für Bohrrohre mit einfach auswechselbaren Zähnen

Country Status (5)

Country Link
EP (1) EP0439821B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) ATE95889T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE4002907A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DK (1) DK0439821T3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES2047236T3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9206657U1 (de) * 1992-05-15 1993-09-16 Töpfer, Rainer, 28870 Ottersberg Rotationswerkzeug mit Hartmetalleinsätzen
DE29612342U1 (de) 1996-07-16 1996-09-12 Bauer Spezialtiefbau Gmbh, 86529 Schrobenhausen Progressivschnecken-Bohrer
DE20100550U1 (de) 2001-01-12 2001-04-19 Bauer Spezialtiefbau Gmbh, 86529 Schrobenhausen Schneidzahnanordnung
DE10205644B4 (de) * 2002-02-12 2006-03-02 Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg Bohrwerkzeug
DE10205643C1 (de) 2002-02-12 2003-10-16 Betek Bergbau & Hartmetall Bohrkrone mit lösbaren Schneidzähnen
JP4211541B2 (ja) 2003-09-01 2009-01-21 ソニー株式会社 記録制御システム、記録予約処理方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE537686C (de) * 1930-08-14 1931-11-09 Haniel & Lueg Gmbh Drehbohrkrone mit nachstellbaren Messern

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072205A (en) * 1960-02-26 1963-01-08 Salem Tool Co Auger reaming head
US3749449A (en) * 1971-10-13 1973-07-31 Cincinnati Mine Machinery Co Means for removably affixing cutter bit and lug assemblies to driven elements of a mining machine or the like
DE2349711A1 (de) * 1972-10-12 1974-05-02 Austin Hoy & Co Ltd Pickenhalterung fuer kutter fuer mineralische stoffe
DE2539707A1 (de) * 1975-09-06 1977-03-17 Marks & Co Fraeswalze
DE3637456A1 (de) * 1986-06-09 1988-05-11 Erich Wezel Hohlbohrkrone
GB8622605D0 (en) * 1986-09-19 1986-10-22 Wimet Mining Ltd Mineral cutting

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE537686C (de) * 1930-08-14 1931-11-09 Haniel & Lueg Gmbh Drehbohrkrone mit nachstellbaren Messern

Also Published As

Publication number Publication date
ES2047236T3 (es) 1994-02-16
DE4002907A1 (de) 1991-08-08
DE4002907C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-01-02
DK0439821T3 (da) 1994-03-07
EP0439821A1 (de) 1991-08-07
DE59003087D1 (de) 1993-11-18
ATE95889T1 (de) 1993-10-15

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