EP1614853B1 - Teleskopierbarer Spiralbohrer - Google Patents

Teleskopierbarer Spiralbohrer Download PDF

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Publication number
EP1614853B1
EP1614853B1 EP05014616A EP05014616A EP1614853B1 EP 1614853 B1 EP1614853 B1 EP 1614853B1 EP 05014616 A EP05014616 A EP 05014616A EP 05014616 A EP05014616 A EP 05014616A EP 1614853 B1 EP1614853 B1 EP 1614853B1
Authority
EP
European Patent Office
Prior art keywords
rod
motor
drilling
screw
internal
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.)
Not-in-force
Application number
EP05014616A
Other languages
English (en)
French (fr)
Other versions
EP1614853A3 (de
EP1614853A2 (de
Inventor
Luciano Agostini
Bruno Bettini
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.)
Soilmec SpA
Original Assignee
Soilmec SpA
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 Soilmec SpA filed Critical Soilmec SpA
Publication of EP1614853A2 publication Critical patent/EP1614853A2/de
Publication of EP1614853A3 publication Critical patent/EP1614853A3/de
Application granted granted Critical
Publication of EP1614853B1 publication Critical patent/EP1614853B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers

Definitions

  • the invention relates to continuous-screw drilling equipment for drilling the ground having an extension rod with at least two sections of rod and to a drilling method which uses said equipment.
  • Continuous-screw drilling equipment for drilling the ground in which a motor assembly slides along a guide maintaining in rotation a screw tool, which is substantially as long as the guide itself; such equipment is able to drill a hole in the ground that is as deep as the length of the tool itself.
  • the plug When the tool is extracted from the earth, the plug is compressed and pushes against the walls of the drilling, thus preventing extraction or else tearing out the surrounding soil so forming a conical crater.
  • a purpose of the invention is to propose equipment that will be able to overcome the drawbacks referred to above.
  • a further purpose of the invention is to propose equipment, which, in overcoming the aforesaid drawbacks, will, however, not require any modifications to the machine nor will involve any supplementary operating time during extraction of the screw.
  • Yet a further purpose of the invention is to propose equipment that will enable an increase in the depth of drilling without sensibly slowing down the drilling cycle itself.
  • the invention proposes the provision of continuous-screw drilling equipment for drilling the ground having an extension rod with two sections according to Claim 1, as well as a drilling method which uses the aforesaid equipment according to Claim 3.
  • the invention draws its origin from the awareness that up to a certain length the plug of debris does not create insurmountable difficulties of extraction. Consequently, the solution proposed by the invention consists in dividing the plug into at least two parts of acceptable length, separated by screw elements that support the plug located on top of said elements.
  • the extension rod is made up of two coaxial sections or stretches of rod (see Figures 2 and 3), of which the internal one 4 is without turns and is rigidly connected to the screw tool 5.
  • the rods 4 and 6 are equipped with splined elements for coupling with one another, and the external rod 6 is in turn equipped with a splined coupling also with respect to the motor 3 so as to transmit the rotary motion from the motor to the respective screws 5 and 7.
  • the tool is set in operation by the motor and starts drilling; when the screw 5 has completely penetrated into the ground, the motor assembly 3 is raised, leaving the tool 5 in the drilling.
  • the motor 3 first of all slides around the outer rod 6 until it comes to a stop against its arrest collar 9. At this point, proceeding with the raising operation, the external rod 6, with its screw, is also raised and slides with respect to the internal rod 4 until it bears upon a respective arrest collar 10.
  • the tool has its screw 5 completely sunk into the ground, followed by a stretch 8 without any turns, which projects from the ground, then followed by the bottom turns 7 of the outer extension 6 and by the stretch without any turns of said outer extension 6 and by the stretch 11 of said extension.
  • the lowest turn of this second set 7 may have a sharpened or shaped end in order to gradually cut into the recompacted soil.
  • the turn may have a conical shape or be equipped with teeth.
  • the operating cycle of the equipment is as follows:
  • Blocking of the motor along the rods and of the rods with respect to one another in the desired positions can be obtained using mechanical systems (e.g., bayonet couplings) or magnetic systems which are altogether known to a person skilled in the branch and which, hence, will not be described herein.
  • mechanical systems e.g., bayonet couplings
  • magnetic systems which are altogether known to a person skilled in the branch and which, hence, will not be described herein.

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)
  • Earth Drilling (AREA)

Claims (3)

  1. Endlosschneckenbohreinrichtung zum Bohren in den Erdgrund, die mit einem Verlängerungsgestänge mit mindestens zwei Gestängeabschnitten ausgestattet ist, derart, dass die Endlosschnecke, die das Werkzeug ausbildet, von einem Verlängerungsgestänge getragen wird, das an einer Motoranordnung entlang gleiten kann, von der es die Rotationsbewegung um seine Längsachse aufnimmt,
    wobei die Einrichtung dadurch gekennzeichnet ist, dass das Verlängerungsgestänge aus mindestens zwei koaxial verlaufenden Gestängeabschnitten oder -Strecken ausgebildet ist, von denen die Innenliegende (4) ohne Windungen ausgeführt und starr mit dem unteren Ende des Endlosschneckenwerkzeugs (5) verbunden ist, während die Außenliegende (6), die an der Innenliegenden (4) und an der Motoranordnung (3) entlang verschiebbar ist, mit einigen Windungen ausgestattet ist, die die Schnecke (7) im unteren Bereich ausbilden, wobei die Gestänge (4 und 6) mit Verzahnungen ausgestattet sind, um miteinander verbunden zu werden, und das Außengestänge (6) wiederum mit einer Verzahnung auch gegenüber dem Motor (3) ausgestattet ist, um die Rotationsbewegung durch den Motor auf die jeweiligen Schnecken (5 und 7) zu übertragen.
  2. Element nach Anspruch 1, dadurch gekennzeichnet, dass die Gestänge (4, 6) mit Auskragungen (9, 10) in einem Bereich entsprechend den jeweiligen oberen Enden ausgestattet sind, die so ausgelegt sind, dass sie die oberen Kontrastelemente des Außengestänges (6) am Innengestänge entlang (4) und des Motors (3) am Außengestänge (6) entlang ausbilden.
  3. Bohrverfahren mit der in den vorhergehenden Ansprüchen beschriebenen Einrichtung, gekennzeichnet durch die folgenden Schritte:
    - Beginnen des Bohrens, wobei die koaxialen Strecken des Verlängerungsgestänges (4 und 6) in die höchst mögliche Position oben auf der Motoranordnung (3) versetzt werden, wobei die Schnecken (5 und 7) jeweils aneinanderliegend eingerichtet sind, um den ganzen Bereich unterhalb der Motoranordnung auszufüllen;
    - Erreichen der in dieser Position möglichen Tiefe, in welcher die Windungen (5) der Innenstrecke (4) in die Erde abgesenkt sind, während die Windungen (7) der Außenstrecke (6), die an der inneren entlang gleitet, außerhalb des Erdreichs bleiben;
    - Anheben der Motoranordnung (3), wobei die Windungen (5) der Innenstrecke (4) in der Bohrung bleiben, indem der Motor an dem Außengestänge (6) entlang gleitet, bis ersterer an die Sicherungsauskragung (9) des Außengestänges (6) stößt;
    - Fortsetzen des Anhebens des Motors (3) bei gleichzeitigem Anheben auch des Außengestänges (6) durch sein Verschieben gegenüber dem Innengestänge (4), bis er an die Sicherungsauskragung (10) stößt;
    - Fortsetzen des Bohrens, bis der Motor (3) auf Bodenhöhe abgesenkt wurde;
    - Herausziehen des Werkzeugs mindestens bis die Innenstrecke des Gestänges (4) aus dem Boden kommt;
    - Absenken des Motors (3) bis er sich wieder in der Position zu Beginn der Bohrung befindet, und dessen Blockieren entlang der Gestänge und
    - vollständiges Herausziehen der Einrichtung in letzterer Anordnung.
EP05014616A 2004-07-06 2005-07-06 Teleskopierbarer Spiralbohrer Not-in-force EP1614853B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000457A ITTO20040457A1 (it) 2004-07-06 2004-07-06 Attrezzatura di perforazione del terreno ad elica continua con asta di prolunga ad almeno due sfili e metodo di scavo mediante detta attrezzatura

Publications (3)

Publication Number Publication Date
EP1614853A2 EP1614853A2 (de) 2006-01-11
EP1614853A3 EP1614853A3 (de) 2006-03-01
EP1614853B1 true EP1614853B1 (de) 2007-08-22

Family

ID=34980142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05014616A Not-in-force EP1614853B1 (de) 2004-07-06 2005-07-06 Teleskopierbarer Spiralbohrer

Country Status (4)

Country Link
EP (1) EP1614853B1 (de)
AT (1) ATE371088T1 (de)
DE (1) DE602005002089D1 (de)
IT (1) ITTO20040457A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2133507A1 (de) 2008-06-13 2009-12-16 BAUER Maschinen GmbH Bohrvorrichtung und Bohrverfahren

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1399262B1 (it) 2009-07-31 2013-04-11 Soilmec Spa Macchina per la perforazione del terreno.
CN114991656B (zh) * 2022-05-26 2022-11-29 潍坊盛德石油机械制造有限公司 一种防止钻头水眼堵塞的螺杆钻具

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1267370B1 (it) 1994-01-28 1997-02-05 Soilmec Spa Perfezionamenti al procedimento di scavo ad elica continua e relativa attrezzatura.
JPH09112170A (ja) * 1995-10-17 1997-04-28 Bauaa Japan Kk アースオーガー
FR2807455B1 (fr) * 2000-04-11 2004-04-02 Cie Du Sol Machine pour la realisation de pieux fores

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2133507A1 (de) 2008-06-13 2009-12-16 BAUER Maschinen GmbH Bohrvorrichtung und Bohrverfahren

Also Published As

Publication number Publication date
EP1614853A3 (de) 2006-03-01
ATE371088T1 (de) 2007-09-15
ITTO20040457A1 (it) 2004-10-06
DE602005002089D1 (de) 2007-10-04
EP1614853A2 (de) 2006-01-11

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