EP0727560A2 - Futterrohr-Drehvorrichtung für Bohrmaschine - Google Patents

Futterrohr-Drehvorrichtung für Bohrmaschine Download PDF

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Publication number
EP0727560A2
EP0727560A2 EP96101254A EP96101254A EP0727560A2 EP 0727560 A2 EP0727560 A2 EP 0727560A2 EP 96101254 A EP96101254 A EP 96101254A EP 96101254 A EP96101254 A EP 96101254A EP 0727560 A2 EP0727560 A2 EP 0727560A2
Authority
EP
European Patent Office
Prior art keywords
rotary casing
oscillator device
rotary
casing
oscillator
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
Application number
EP96101254A
Other languages
English (en)
French (fr)
Other versions
EP0727560B1 (de
EP0727560A3 (de
Inventor
Sergio Casagrande
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.)
Casagrande SpA
Original Assignee
Casagrande 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 Casagrande SpA filed Critical Casagrande SpA
Publication of EP0727560A2 publication Critical patent/EP0727560A2/de
Publication of EP0727560A3 publication Critical patent/EP0727560A3/de
Application granted granted Critical
Publication of EP0727560B1 publication Critical patent/EP0727560B1/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
    • E21B3/00—Rotary drilling
    • E21B3/02—Surface drives for rotary drilling
    • E21B3/025—Surface drives for rotary drilling with a to-and-fro rotation of the tool

Definitions

  • This invention concerns a rotary casing-oscillator device for excavation machines with rotary tools, as set forth in the main claim.
  • the rotary casing-oscillator device according to the invention is applied to excavation machines employing rotary tools to make boreholes for foundations and, to be more exact, to the obtaining of foundation piles.
  • the excavation machines to which the invention is applied may be of a hydraulic or mechanical type and enable piles to be obtained with diameters ranging from 600 to 2500 mm. and with depths at least of 80 metres.
  • These machines comprise a drilling assembly in which a rotation head is associated with a rotary tool together with a plurality of interposed shafts, which are assembled axially until the required depth has been reached.
  • the excavation machines include at their front an assembly to insert tubular casings having an outer diameter greater than that of the rotary tool, these casings being inserted into the ground in a position substantially on the same axis as the borehole and at least along a longitudinal part of the borehole and having the purpose of retaining the sidewall of the borehole.
  • Rotary casing-oscillators are employed at the present time for insertion of these tubular casings and ensure a high torque so as to be able to rotate the casing at the same time as they thrust the casing downwards.
  • casing oscillators are associated in a front position with the foundation excavation machines and may form an element substantially independent of those machines or may be driven by the excavation machine with which they are associated.
  • This system requires a plurality of auxiliary accessories both for its installation and for its operation, and those accessories make the operations of producing the pile complicated and long.
  • a first device provides the rotation and thrust of the rotary tool and supplies continuously the motion and thrust to a second device which provides the rotation and thrust of the casings.
  • the rotary casing-oscillator device is therefore associated directly and stably with the device that rotates the rotary drilling tool, and both devices are driven by the same motor.
  • This invention enables the rotary casing-oscillator device to be driven independently of the tool rotation device, depending on the specific requirements.
  • the rotary casing-oscillator device according to the invention is located on the same axis as, and in a lower position than, the tool rotation device.
  • the rotary casing-oscillator device is always independent of the tool rotation device, each of the two devices being associated with its own independent motor unit.
  • the tool rotation device and the rotary casing-oscillator device are coaxial and superimposed on each other, the tool rotation device being positioned above.
  • the tool rotation device may be momentarily associated with, and released from, the rotary casing-oscillator device, and in this case the machine includes one single motor unit governing both the above devices.
  • the motor unit therefore performs the twofold function of providing motion for the tool rotation device and for the rotary casing-oscillator device, but this supply to one or both of the devices depends only on the choice of the machine operator.
  • the invention enables the tool rotation device to be coupled with, and released from, the rotary casing-oscillator device with a simple, automatic and remote-controlled operation when so required by the operations.
  • the tool rotation device and the rotary casing-oscillator device are coaxial and superimposed on each other and are associated with each other by a transmission assembly, for instance of an epicyclic type.
  • the transmission assembly acts also as a multiplier of torque between the tool rotation device and the rotary casing-oscillator device, thus making available for the operation of insertion of the casing in the ground a twisting moment, and therefore a torque, much greater than that required for the insertion of the rotary drilling tool in the ground.
  • the transmission assembly includes vertically movable coupling flange means having a first coupling position and a second disconnected position.
  • the rotary casing-oscillator device In the first coupling position of the coupling flange means the rotary casing-oscillator device is rotatably connected to the drilling tool rotation device and is driven therewith but at a reduced angular speed.
  • the coupling flange means comprise a pair of facing anchorage flanges including a first anchorage flange having anchorage elements of a male type (or female type) which cooperate momentarily with a coordinated plurality of anchorage elements of a female type (or male type) having a mating form and included in the second anchorage flange of the coupling flange means associated with the transmission assembly governing the rotary casing-oscillator device.
  • the momentary cooperation between the first and second anchorage flanges is obtained by an axial movement performed by raising/lowering one anchorage flange in relation to the other anchorage flange by means of actuator means, for instance.
  • the reference number 10 in the attached figures denotes generally a rotary casing-oscillator device according to the invention.
  • the rotary casing-oscillator device 10 is fitted to an excavation machine with rotary tools which is employed in the field of foundations for the purpose of making a borehole and for the simultaneous insertion of a tubular casing for the production of piles.
  • the excavation machine to which the invention is applied has the rotary casing-oscillator device 10 coaxial with, and positioned below, the tool rotation device 13.
  • the tool rotation device 13 is driven by a first motor, not shown here, by means of a first gearwheel 11 shown only partly, whereas the rotary casing-oscillator device 10 is driven by a second motor 14 independent of the first motor.
  • the second motor 14 cooperates with a second gearwheel 20 associated with a transmission assembly 15 of an epicyclic type.
  • This epicyclic train 15 acts as a torque multiplier and transmits motion to the rotary casing-oscillator device 10 according to the invention.
  • rotary casing-oscillator device 10 and the tool rotation device 13 are associated with each other in a manner such that they can be momentarily disactivated.
  • the rotary casing-oscillator device 10 is associated with the tool rotation device 13 by means of a transmission assembly 115 which can be momentarily disactivated.
  • the excavation machine comprises only one motor, which is not shown here and which transmits rotary motion by means of the first gearwheel 11 to the tool rotation device 13 and to the rotary casing-oscillator device 10 when so required by the operations.
  • the transmission assembly 115 comprises coupling flange means 16 and the epicyclic train 15, which acts as a torque multiplier to impart to the rotary casing-oscillator device 10 a speed and a torque such as will ensure the insertion of the casing in the ground.
  • the coupling flange means 16 comprise a first anchorage flange 16a and a second anchorage flange 16b, which are superimposed on each other and are associated respectively with the tool rotation device 13 and with the rotary casing-oscillator device 10.
  • the coupling flange means 16 enable the rotary casing-oscillator device 10 to be released from the tool rotation device 13 in a simple, automatic and remote-controlled manner.
  • the tool rotation device 13 includes on its lower side the solidly fitted second gearwheel 21, on which the first anchorage flange 16a is installed so as to be vertically movable but rotatably clamped.
  • the coupling flange means 16 have a first coupling position, in which the two anchorage flanges 16a, 16b are rotatably clamped to each other, and a second disconnected position, in which the two anchorage flanges 16a, 16b are rotatably released from each other and are free to rotate independently.
  • the first anchorage flange 16a of the coupling flange means 16 is solidly associated with lifting/lowering means 19, which in this example consist of diametrically opposed actuators 12.
  • These lifting/lowering means 19 enable the first anchorage flange 16a to be distanced from the second anchorage flange 16b so as to release the rotary casing-oscillator device 10 from the tool rotation device 13.
  • the first anchorage flange 16a comprises a plurality of peripherally arranged seating or holes 17, with which there cooperates momentarily a coordinated plurality of pins 18 having a mating form and included on the upper surface of the second anchorage flange 16b associated with the rotary casing-oscillator device 10.

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)
  • Drilling And Boring (AREA)
EP96101254A 1995-02-16 1996-01-30 Futterrohr-Drehvorrichtung für Bohrmaschine Expired - Lifetime EP0727560B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUD950022 1995-02-16
IT95UD000022A IT1280129B1 (it) 1995-02-16 1995-02-16 Dispositivo giracolonna per macchine da scavo con utensili rotanti

Publications (3)

Publication Number Publication Date
EP0727560A2 true EP0727560A2 (de) 1996-08-21
EP0727560A3 EP0727560A3 (de) 1997-01-29
EP0727560B1 EP0727560B1 (de) 2001-04-04

Family

ID=11421734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101254A Expired - Lifetime EP0727560B1 (de) 1995-02-16 1996-01-30 Futterrohr-Drehvorrichtung für Bohrmaschine

Country Status (4)

Country Link
EP (1) EP0727560B1 (de)
AT (1) ATE200335T1 (de)
DE (1) DE69612317T2 (de)
IT (1) IT1280129B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6796390B1 (en) 1999-09-21 2004-09-28 Shell Oil Company Method and device for moving a tube in a borehole in the ground
WO2006047892A1 (en) * 2004-11-08 2006-05-11 Tesco Corporation Wellbore tubular handling torque multiplier
WO2018112678A1 (zh) * 2016-12-23 2018-06-28 杨一男 一种护筒扭矩放大器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3703212A (en) * 1969-10-13 1972-11-21 Rock Fall Co Ltd Method of rock drilling and apparatus for use therein
DE2026364A1 (de) * 1970-05-29 1971-12-09 Salzgitter Maschinen Ag Bohreinrichtung zum Herstellen von zu verrohrenden Bohrlöchern
SE414417B (sv) * 1975-12-11 1980-07-28 Craelius Ab Bergborrmaskin
US4148367A (en) * 1977-03-14 1979-04-10 Reich Wendell L Well drilling apparatus

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"Foundation Engineering Equipment", CONASTRUCTION EUROPE, April 1994 (1994-04-01), pages 49 - 53
Leaflet of the firm CASAGRANDE SPA dated 2 Januar 1994 relating to machine HT55
Leaflet of the firm CASAGRANDE SPA Describing the technical features of the HT55 machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6796390B1 (en) 1999-09-21 2004-09-28 Shell Oil Company Method and device for moving a tube in a borehole in the ground
WO2006047892A1 (en) * 2004-11-08 2006-05-11 Tesco Corporation Wellbore tubular handling torque multiplier
US7770635B2 (en) 2004-11-08 2010-08-10 Tesco Corporation Wellbore tubular handling torque multiplier
WO2018112678A1 (zh) * 2016-12-23 2018-06-28 杨一男 一种护筒扭矩放大器

Also Published As

Publication number Publication date
DE69612317D1 (de) 2001-05-10
EP0727560B1 (de) 2001-04-04
ITUD950022A1 (it) 1996-08-16
DE69612317T2 (de) 2001-07-12
ATE200335T1 (de) 2001-04-15
IT1280129B1 (it) 1998-01-05
EP0727560A3 (de) 1997-01-29
ITUD950022A0 (it) 1995-02-16

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