EP1302621B1 - Bohrmeissel für sehr harte Materialen - Google Patents

Bohrmeissel für sehr harte Materialen Download PDF

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Publication number
EP1302621B1
EP1302621B1 EP02292418A EP02292418A EP1302621B1 EP 1302621 B1 EP1302621 B1 EP 1302621B1 EP 02292418 A EP02292418 A EP 02292418A EP 02292418 A EP02292418 A EP 02292418A EP 1302621 B1 EP1302621 B1 EP 1302621B1
Authority
EP
European Patent Office
Prior art keywords
ramp
cylindrical
bit
parts
axial bore
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
EP02292418A
Other languages
English (en)
French (fr)
Other versions
EP1302621A1 (de
Inventor
Stéphane c/o Compagnie du Sol Binon
Benoît c/o Compagnie du Sol Quandalle
Olivier c/o Compagnie du Sol Vacher
Germain c/o Compagnie du Sol Viroles
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.)
Compagnie du Sol SARL
Original Assignee
Compagnie du Sol SARL
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 Compagnie du Sol SARL filed Critical Compagnie du Sol SARL
Publication of EP1302621A1 publication Critical patent/EP1302621A1/de
Application granted granted Critical
Publication of EP1302621B1 publication Critical patent/EP1302621B1/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
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device
    • 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
    • E21B10/36—Percussion drill bits
    • 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 present invention relates to a drill bit specially adapted for drilling or for producing anchor holes in granite or other very hard materials.
  • a drill bit specially adapted for drilling or for producing anchor holes in granite or other very hard materials.
  • Such a bit known in the prior art is described in US-A-2371498.
  • An object of the present invention is therefore to provide a new bit that can improve the performance of this operation without being subject to the difficulties of reloading the active elements of the bit.
  • the bit is constituted by two distinct parts that can move in vertical translation relative to each other, the lower part of the bit first hit the ground where it is desired to carry out the drilling then the upper part, guided in translation by the cooperation of the recess and the axial bore and the axial cylindrical guide, approaches the lower part.
  • the cooperation of the ramp-shaped recess with the ramp-like extension converts the vertical translation movement of the upper part into a rotational movement of this same part about the axis common to the axial bore. and to the cylindrical axial guide.
  • the upper part impacts in rotation the lower part transmitting to its active face a rotational movement which is added to the vertical implant.
  • the ramp-shaped male and female elements having a helical shape corresponding to the cylindrical shape of the upper and lower portions of the bit, during their approach, the conversion of the translational movement of the part is obtained under optimum conditions.
  • upper bit in a rotational movement of the same upper part of the trephine.
  • the vertical planes of the ramps collide, which produces a rotation of the lower part.
  • the bit 10 is constituted by a lower portion 12 and an upper portion 14.
  • the upper portion 14 has at its upper end 16 ears or analogues 18 to allow attachment of the end of the cable or rope 20 to which the drill bit is suspended.
  • the upper part 14 is guided in vertical translation with respect to the lower part 12 by the cooperation of a cylindrical guide 22 which projects out of the lower face 24 of the upper part 14 and of a cylindrical axial bore 26 pierced in the lower part 12 of the bit and opening into the upper face 12 'of the lower portion 12.
  • the facing faces 24 and 12' are parallel to each other and substantially horizontal.
  • the cylindrical guide 22 and the cylindrical bore 26 define a vertical common axis X-X 'in which the upper part 14 can move relative to the lower part 12.
  • the upper part 14, which is preferably cylindrical with axis XX ', also preferably comprises two extensions 30 and 32 which are diametrically opposite with respect to the axis XX' and which project into the lower face 24 of the upper part 14.
  • These extensions are limited, on the one hand, by a plane A passing through the axis X-X ', on the other hand, by a portion of helix H. It is a matter of even for the extension 32.
  • the edge H of the extension 30 or 32 in the form of a helix thus constitutes a ramp capable of cooperating with a conjugate ramp formed in the lower part 12 of the bit.
  • the conjugate ramp is constituted by recesses 34 and 36 diametrically opposed.
  • the recesses are delimited, on the one hand, by a plane A 'passing through the axis XX' and, on the other hand, by a helical portion H 'of the same pitch as the helix H of the upper part. It will be understood that, during the displacement in translation of the upper part 14 with respect to the lower part 12 in the axial direction X-X ', the extensions 30 and 32 of the upper part can progressively penetrate into the recesses 34 and 36 of the lower part.
  • the planes A and A ' respectively define for the extensions and the recesses vertical surfaces 23 and 25 arranged in planes which contain the axis X-X'.
  • the lower end 28 of the lower portion 12 is equipped with picks or similar tools 38 which are made more active and more efficient by the rotation of the lower part 12.
  • the lower portion 12 and upper 14 are made integral in translation by two chains such as 42 whose ends 42A and 42B are respectively fixed on the upper portions 14 and lower 12 of the bit.
  • the chains 42 are of course stretched and, in this position, the lower ends 30a, 32a of the extensions 30 and 32 are slightly engaged in the recesses 34 and 36 of such so that the end of the helical ramp H is in contact with the end of the ramp H 'thus achieving a pre-positioning of the two parts of the bit to allow the cooperation of the helical ramps and therefore the rotation of the lower part of the bit.
  • FIG. 1A the two parts of the bit are shown in their relative positions occupied when the lower part of the bit has not yet touched the ground to be drilled.
  • FIG. 1B shows the drill bit in an intermediate position in which the lower part 12 has already struck the ground S and the upper part has begun to approach the lower part, the cooperation of the helical ramps H and H 'having caused the beginning of the rotation of the upper part 14 in the direction of the arrow F.
  • FIG. 1C there is shown the final position of the bit in which the lower face 24 of the upper part 14 and the upper face 12 'of the lower part 12 are in contact, the extensions 30 and 32 occupying completely the recesses 34 and 36.
  • the rotation of the upper portion 14 is thus completely complete.
  • the vertical face 23 of the extensions 30 and 32 coming into contact with the vertical faces 25 of the recesses 34 and 36, the upper part 14 of the bit transmits a very large torque to the lower part 12 causing the rotation of the latter in the direction indicated by the arrow F ', which improves the efficiency of the bit.
  • the pitch of the propellers H and H ' results from a compromise between the desired angle of rotation and the possibility of effectively converting the translation movement of the upper part 14 into a rotational movement of the lower part. 12. More precisely, it is understood that, if the pitch is too small, that is to say if the angle that the tangent to the helix with the axis XX 'is too close to 90 degrees, this conversion movement would not be in favorable conditions.
  • FIGS 4A-4C there is shown another embodiment of the bit.
  • the cylindrical guide which serves as a guide in translation and pivot axis is constituted by a separate part of the upper and lower parts of the bit.
  • the upper portion 14 has a blind axial bore 50 and the lower portion 12 also has an axial bore 52 opening into the lower face 26.
  • the latter bore 52 having a shoulder 54 near its lower end.
  • the cylindrical extension is constituted by a shaft member 56 freely mounted in translation and rotation in the axial bores 50 and 52.
  • the lower end 58 of the shaft 56 has a reduced diameter corresponding to the shoulder 54.
  • the upper 14 and lower 12 portions of the bit also include respectively boom extensions 30 and 32 and ramp-like recesses 34 and 36 as shown in FIGS. 1A-1C.
  • the number of extensions 30, 32 and therefore the number of recesses 34, 36 is limited to two. This makes it possible to have a sufficient relative angle of rotation of the two parts of the bit to cause sufficient rotation of the lower part of the bit. it also allows to have vertical surfaces 23 and 25 and thus to have an effective torque transmission.

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)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Drilling Tools (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Physical Vapour Deposition (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Claims (9)

  1. Bohrmeißel, dadurch gekennzeichnet, daß er Folgendes umfaßt:
    - einen unteren Bereich (12) mit einer aktiven Unterseite und einer Oberseite (12'), die nahezu parallel zu der aktiven Seite ist,
    - einen oberen Bereich (14), der eine Oberseite (16) umfaßt, die mit Teilen zur Befestigung (18) an den Trageseilen ausgestattet ist, und eine Unterseite (24) gegenüber der Oberseite (12') des unteren Bereichs; und
    - Mittel (42), die den Abstand zwischen den beiden Bereichen eingrenzen und gleichzeitig deren Annäherung ermöglichen;
    wobei der Bohrmeißel außerdem umfaßt:
    - eine axiale Zylinderbohrung (26) durch die beiden Bereiche;
    - eine Zylinderführung (22), die frei in die axiale Bohrung eindringt;
    - mindestens eine Vertiefung, die eine Rampe (34, 36) bildet, die in eine der beiden gegenüberliegenden Seiten mündet, und mindestens eine Verlängerung in Form einer Rampe (30, 32), die aus der zweiten gegenüberliegenden Seite hervorsteht, um mit der Vertiefung, die eine Rampe bildet in der Weise zusammenzuwirken, daß sich die Annäherung des oberen Bereichs (14) zum unteren Bereich (12) in eine Rotationsbewegung dieses oberen Bereichs um die gemeinsame Achse der axialen Bohrung und der Zylinderführung umwandelt, wobei das Ende der Rotation des oberen Bereichs die Rotation des unteren Bereichs hervorruft.
  2. Bohrmeißel nach Anspruch 1, dadurch gekennzeichnet, daß die Vertiefung in Form einer Rampe (34, 36) Bestandteil des unteren Bereichs (12) des Bohrmeißels ist und daß die Zylinderführung (22) und die Verlängerung in Form einer Rampe (30, 32) Bestandteil des oberen Bereichs des Bohrmeißels sind.
  3. Bohrmeißel nach Anspruch 1, dadurch gekennzeichnet, daß die Zylinderführung (22) aus einem von dem oberen Bereich (14) und dem unteren Bereich (12) verschiedenen Stück besteht, wobei die Führung die Form einer zylindrischen Welle hat, die in der axialen Zylinderbohrung (26) sitzt, die in den oberen und unteren Bereichen des Bohrmeißels behaust ist.
  4. Bohrmeißel nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, daß der untere Bereich (12) und der obere Bereich (14) zylindrisch sind mit Achsen, die der Achse der Zylinderführung (22) oder der Achse der axialen Bohrung (26) entsprechen, und dadurch, daß:
    die Verlängerung (30, 32) in Form einer Rampe durch einen schraubenförmigen Zylinderteil (H) und einen Teil einer Ebene (A), längs der Achse der axialen Bohrung verlaufend, begrenzt ist,
    und die Vertiefung, die eine Rampe (34, 36) bildet, durch einen Schraubenteil (H'), die mit dem Schraubenteil der Verlängerung, die die Rampe bildet, identisch ist, und einen vertikalen, längs der Achse der axialen Bohrung verlaufende Ebeneteil (A') begrenzt ist, wobei das Zusammenwirken der vertikalen Ebenen die Rotation des unteren Bereichs am Ende der Rotationsbewegung des oberen Bereichs auslöst.
  5. Bohrmeißel nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß er zwei Vertiefungen (34, 36) in Form einer Rampe, die symmetrisch zu der gemeinsamen Achse der zylindrischen Bohrung (26) und der Zylinderführung (22) angeordnet sind, sowie zwei Verlängerungen in Form einer Rampe (30, 32), die symmetrisch zu der gemeinsamen Achse der zylindrischen Bohrung und der Zylinderführung angeordnet sind, umfaßt.
  6. Bohrmeißel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Mittel, zum Begrenzen des Abstands zwischen dem unteren Bereich und dem oberen Bereich mindestens eine Kette (42) umfassen, deren Enden (42A, 42B) jeweils an der Außenwand des oberen Bereichs (14) und des unteren Bereichs (12) befestigt sind.
  7. Bohrmeißel nach Anspruch 6, dadurch gekennzeichnet, daß er zwei Ketten (42) umfaßt, die symmetrisch zu der gemeinsamen Achse der zylindrischen Bohrung (26) und der Zylinderführung (22) angeordnet sind.
  8. Bohrmeißel nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, daß, wenn eine oder beide Ketten (42) entsprechend dem maximalen Abstand zwischen dem unteren Bereich (12) und dem oberen Bereich (14) gespannt sind, das Ende der Verlängerung oder der Verlängerungen in Form einer Rampe (30, 32) in die Vertiefung oder die Vertiefungen in Form einer Rampe (34, 36) eindringt.
  9. Bohrmeißel nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß die axiale Bohrung (26), die durch den unteren Teil (12) führt, in die Unterseite des unteren Teils mündet.
EP02292418A 2001-10-16 2002-10-02 Bohrmeissel für sehr harte Materialen Expired - Lifetime EP1302621B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0113317A FR2830898B1 (fr) 2001-10-16 2001-10-16 Trepan pour materiaux tres durs
FR0113317 2001-10-16

Publications (2)

Publication Number Publication Date
EP1302621A1 EP1302621A1 (de) 2003-04-16
EP1302621B1 true EP1302621B1 (de) 2006-04-19

Family

ID=8868344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02292418A Expired - Lifetime EP1302621B1 (de) 2001-10-16 2002-10-02 Bohrmeissel für sehr harte Materialen

Country Status (7)

Country Link
US (1) US6942046B2 (de)
EP (1) EP1302621B1 (de)
AT (1) ATE323821T1 (de)
DE (1) DE60210722D1 (de)
FR (1) FR2830898B1 (de)
HK (1) HK1055775A1 (de)
SG (1) SG107617A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2460069C (en) * 2001-09-20 2010-07-13 Shell Canada Limited Percussion drilling head
US6761231B1 (en) 2002-05-06 2004-07-13 The Charles Machines Works, Inc. Rotary driven drilling hammer
KR20180058790A (ko) * 2015-09-30 2018-06-01 제이런 라이엘 맥밀란 퍼쿠션 장치
CN106437530B (zh) * 2016-09-26 2019-09-03 长江大学 一种用于锚杆预成孔施工的挤土式钻头

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2371498A (en) * 1941-10-27 1945-03-13 Sida S Martin Automatically rotatable bit for cable well tools
US2566913A (en) * 1949-04-15 1951-09-04 George R Watson Cable drilling tool
DE1813400A1 (de) * 1968-12-07 1970-06-25 Grossbohrloch U Spreng Unterne Bohrkrone fuer Tieflochhaemmer
US3788409A (en) * 1972-05-08 1974-01-29 Baker Oil Tools Inc Percussion bits
US3837414A (en) * 1973-08-01 1974-09-24 K Swindle Jar-type drilling tool
DE2817194C2 (de) * 1977-05-03 1984-05-03 Diamant Boart S.A., Bruxelles Kernbohrgerät
GB8406957D0 (en) * 1984-03-16 1984-04-18 Ennis M S J Hammer
US4919221A (en) * 1989-04-06 1990-04-24 Numa Tool Company Impact drill bit assembly and replaceable parts thereof
US4962822A (en) * 1989-12-15 1990-10-16 Numa Tool Company Downhole drill bit and bit coupling
US6315063B1 (en) * 1999-11-02 2001-11-13 Leo A. Martini Reciprocating rotary drilling motor

Also Published As

Publication number Publication date
EP1302621A1 (de) 2003-04-16
US20030230434A1 (en) 2003-12-18
DE60210722D1 (de) 2006-05-24
HK1055775A1 (en) 2004-01-21
ATE323821T1 (de) 2006-05-15
SG107617A1 (en) 2004-12-29
FR2830898B1 (fr) 2004-01-23
FR2830898A1 (fr) 2003-04-18
US6942046B2 (en) 2005-09-13

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