EP0439821A1 - Couronne de coupe pour tubes de forage avec dents facilement échangeables - Google Patents
Couronne de coupe pour tubes de forage avec dents facilement échangeables Download PDFInfo
- Publication number
- EP0439821A1 EP0439821A1 EP90125346A EP90125346A EP0439821A1 EP 0439821 A1 EP0439821 A1 EP 0439821A1 EP 90125346 A EP90125346 A EP 90125346A EP 90125346 A EP90125346 A EP 90125346A EP 0439821 A1 EP0439821 A1 EP 0439821A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- teeth
- sleeves
- tooth
- cutting
- 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.)
- Granted
Links
- 230000036346 tooth eruption Effects 0.000 claims abstract description 3
- 238000005553 drilling Methods 0.000 claims description 4
- 230000004308 accommodation Effects 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 description 7
- 239000002689 soil Substances 0.000 description 4
- 241000209035 Ilex Species 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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 for drill pipes for drilling a cased bore, for example for pile foundation or well bores, with an essentially cylindrical ring designed as an extension of a drill pipe which can be welded to it or to it, optionally indirectly via a connecting ring, by means of threaded bolts or the like
- Detachably connectable base body which is provided at its free front end with cutting teeth projecting beyond this and its outside and arranged at uniform intervals over the circumference.
- the present invention has for its object to provide a cutting crown which allows the necessary maintenance or repair work to be carried out on site with relatively simple means and quickly.
- 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.
- 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. 1 a with the tooth 4 inserted in it according to FIG. 2 a, 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)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Component Parts Of Construction Machinery (AREA)
- Sampling And Sample Adjustment (AREA)
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 true EP0439821A1 (fr) | 1991-08-07 |
EP0439821B1 EP0439821B1 (fr) | 1993-10-13 |
Family
ID=6399180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90125346A Expired - Lifetime EP0439821B1 (fr) | 1990-02-01 | 1990-12-22 | Couronne de coupe pour tubes de forage avec dents facilement échangeables |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0439821B1 (fr) |
AT (1) | ATE95889T1 (fr) |
DE (2) | DE4002907A1 (fr) |
DK (1) | DK0439821T3 (fr) |
ES (1) | ES2047236T3 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1223302A3 (fr) * | 2001-01-12 | 2003-03-19 | BAUER Maschinen GmbH | Ensemble de dent de coupe |
WO2003068438A1 (fr) | 2002-02-12 | 2003-08-21 | Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg | Ensemble de fixation |
WO2005022907A1 (fr) | 2003-09-01 | 2005-03-10 | Sony Corporation | Dispositif d'enregistrement et procede de traitement de reservations d'enregistrement |
Families Citing this family (3)
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 |
DE10205644B4 (de) * | 2002-02-12 | 2006-03-02 | Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg | Bohrwerkzeug |
Citations (6)
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 |
FR2203019A1 (fr) * | 1972-10-12 | 1974-05-10 | Austin Hoy & Co Ltd | |
DE2539707A1 (de) * | 1975-09-06 | 1977-03-17 | Marks & Co | Fraeswalze |
GB2195682A (en) * | 1986-09-19 | 1988-04-13 | Wimet Mining Limited | Mineral cutting means |
DE3637456A1 (de) * | 1986-06-09 | 1988-05-11 | Erich Wezel | Hohlbohrkrone |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE537686C (de) * | 1930-08-14 | 1931-11-09 | Haniel & Lueg Gmbh | Drehbohrkrone mit nachstellbaren Messern |
-
1990
- 1990-02-01 DE DE4002907A patent/DE4002907A1/de active Granted
- 1990-12-22 DK DK90125346.8T patent/DK0439821T3/da active
- 1990-12-22 DE DE90125346T patent/DE59003087D1/de not_active Expired - Fee Related
- 1990-12-22 AT AT90125346T patent/ATE95889T1/de active
- 1990-12-22 ES ES90125346T patent/ES2047236T3/es not_active Expired - Lifetime
- 1990-12-22 EP EP90125346A patent/EP0439821B1/fr not_active Expired - Lifetime
Patent Citations (6)
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 |
FR2203019A1 (fr) * | 1972-10-12 | 1974-05-10 | Austin Hoy & Co Ltd | |
DE2539707A1 (de) * | 1975-09-06 | 1977-03-17 | Marks & Co | Fraeswalze |
DE3637456A1 (de) * | 1986-06-09 | 1988-05-11 | Erich Wezel | Hohlbohrkrone |
GB2195682A (en) * | 1986-09-19 | 1988-04-13 | Wimet Mining Limited | Mineral cutting means |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1223302A3 (fr) * | 2001-01-12 | 2003-03-19 | BAUER Maschinen GmbH | Ensemble de dent de coupe |
WO2003068438A1 (fr) | 2002-02-12 | 2003-08-21 | Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg | Ensemble de fixation |
WO2005022907A1 (fr) | 2003-09-01 | 2005-03-10 | Sony Corporation | Dispositif d'enregistrement et procede de traitement de reservations d'enregistrement |
Also Published As
Publication number | Publication date |
---|---|
DE59003087D1 (de) | 1993-11-18 |
DE4002907A1 (de) | 1991-08-08 |
DE4002907C2 (fr) | 1992-01-02 |
EP0439821B1 (fr) | 1993-10-13 |
DK0439821T3 (da) | 1994-03-07 |
ES2047236T3 (es) | 1994-02-16 |
ATE95889T1 (de) | 1993-10-15 |
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