DE205458C - - Google Patents
Info
- Publication number
- DE205458C DE205458C DENDAT205458D DE205458DA DE205458C DE 205458 C DE205458 C DE 205458C DE NDAT205458 D DENDAT205458 D DE NDAT205458D DE 205458D A DE205458D A DE 205458DA DE 205458 C DE205458 C DE 205458C
- Authority
- DE
- Germany
- Prior art keywords
- sleeve
- cutting
- extension
- cutting jaws
- pressure
- 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.)
- Active
Links
- 238000013459 approach Methods 0.000 claims 1
- 210000001331 nose Anatomy 0.000 description 2
- 241000947840 Alteromonadales Species 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
- E21B10/325—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools the cutter being shifted by a spring mechanism
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling Tools (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- JVi 205458V-KLASSE 5 a. GRUPPE^- JVi 205458V-CLASS 5 a. GROUP ^
ALBERT FAUCK & CO. in WIEN.ALBERT FAUCK & CO. in Vienna.
Man kennt bereits stoßende Tiefbohrer, bei welchen eine Hülse den Druck einer einzigen Schraubenfeder auf innere Ansätze mehrerer nebeneinander gelagerter Erweiterungs-Schneidbacken überträgt. Die Erfindung hat nun den Zweck, die Wirkung solcher Bohrer zu erhöhen und ihre Führung in der Achse des Bohrloches zu sichern, dadurch, daß mehrere angebrachte Schneidbackengruppen in verschiedenen Höhenlagen durch dieselbe Hülse beeinflußt werden. Dabei drückt die erwähnte Hülse mit ihrem Unterrande in bekannter Weise auf die inneren Ansätze der Schneidbacken der untersten Gruppe, während sie zur Übertragung des Druckes auf die Schneidbacken der oberen Gruppen seitliche Wandausschnitte besitzt.Pushing deep drills are already known in which one sleeve exerts the pressure of a single one Helical spring on the inner lugs of several extension dies placed next to one another transmits. The invention now has the purpose of increasing the effectiveness of such drills and to secure their guidance in the axis of the borehole, in that several attached cutting jaw groups in different Altitudes are affected by the same sleeve. The aforementioned sleeve presses with its lower edge in a known manner Way on the inner lugs of the cutting jaws of the lowest group while they are used to transfer the pressure to the Cutting jaws of the upper groups has side wall cutouts.
Auf der Zeichnung ist die Erfindung in Fig. ι in einem senkrechten Schnitt dargestellt; die Fig. 2 zeigt einen wagerechten Schnitt nach Linie 2-2 der Fig. 1 und Fig. 3 denselben Schnitt wie Fig. 1, jedoch befinden sich die oberen Schneiden in der Verrohrung und daher beide Schneidenpaare im zurückgeklappten Zustand.In the drawing, the invention is shown in Fig. Ι in a vertical section; FIG. 2 shows a horizontal section along line 2-2 of FIGS. 1 and 3 the same section as FIG. 1, but the upper cutting edges are in the piping and therefore both pairs of cutting edges in the folded-back state.
Wie aus Fig. 1 ersichtlich ist, ist in den rohrförmigen Träger α der Erweiterungsschneiden b ein Spülwasserrohr c eingesetzt, an dessen oberem und unterem Ende Lederdich tungsringe d durch aufgeschraubte Muttern e an Schultern der Innenfläche des rohrförmigen Nachnehrnbohrerkörpers angedrückt werden. In um 180 ° voneinander abstehenden, d. h. einander gegenüberliegenden Längsschlitzen / des rohrförmigen Nachnehmbohrerkörpers a sind, wie üblich, um Bolzen g drehbare, mit inneren Nasen versehene Erweiterungsschneiden b zwischen Widerlager h und i eingesetzt. In geringer Entfernung unterhalb der Schlitze/ hat der rohrförmige Nachnehmbohrerkörper a weitere um 90° gegen die Schlitze/ versetzte, einander gegenüberliegende Schlitze, in welchen gleichfalls Erweiterungsschneiden b zwischen Widerlagern h und i um Bolzen g drehbar gelagert sind. Das Rohr c ist teilweise von einer Hülse k umgeben, welche Schlitze I für die Nasen der oberen Schneiden besitzt und mit ihrer unteren Kante auf den Nasen der unteren Schneiden aufruht. Zwischen der oberen Kante der Hülse k und der oberen Mutter e des Rohres c ist eine Schraubenfeder m angeordnet, welche bestrebt ist, die Hülse k in ihrer tiefsten Lage und damit die Schneiden in der Arbeitsstellung (Fig. 1) zu halten.As can be seen from Fig. 1, a flushing water pipe c is inserted into the tubular support α of the extension cutting b , at the upper and lower end of which leather sealing rings d are pressed by screwed nuts e on shoulders of the inner surface of the tubular Nachnehrnbohrerkörpers. In 180 ° protruding from one another, ie opposite longitudinal slots / of the tubular Nachnehmbohrerkörpers a are, as usual, rotatable about bolts g , provided with inner lugs b inserted between abutments h and i. At a short distance below the slots / the tubular follower drill body a has another 90 ° offset against the slots / opposite slots in which extension cutting edges b are also rotatably mounted between abutments h and i about bolts g. The tube c is partially surrounded by a sleeve k which has slots I for the noses of the upper blades and rests with its lower edge on the noses of the lower blades. A helical spring m is arranged between the upper edge of the sleeve k and the upper nut e of the tube c , which strives to keep the sleeve k in its lowest position and thus the cutting edges in the working position (FIG. 1).
Wird der Bohrer aufgeholt, so schlagen die oberen Schneiden b an den unteren Rand der Verrohrung / an und werden unter Zusammendrückung der Feder m um ihre Bolzen gedreht (Fig. 3). Beim Austritt der Schneiden hingegen aus der Verrohrung gelangt die Feder m zur Wirkung und drückt vermittels der Hülse k die Schneiden wieder in ihre Arbeitsstellung (Fig. 1).If the drill is caught up, the upper cutting edges b strike the lower edge of the tubing / and are rotated around their bolts while compressing the spring m (FIG. 3). When the cutting edges emerge from the piping, however, the spring m comes into effect and, by means of the sleeve k, presses the cutting edges back into their working position (FIG. 1).
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE205458C true DE205458C (en) |
Family
ID=467702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT205458D Active DE205458C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE205458C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005046495B4 (en) * | 2005-09-29 | 2015-07-30 | Minova International Ltd. | Drilling device for creating cased boreholes |
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0
- DE DENDAT205458D patent/DE205458C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005046495B4 (en) * | 2005-09-29 | 2015-07-30 | Minova International Ltd. | Drilling device for creating cased boreholes |
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