EP0123671A2 - Machine de forage - Google Patents

Machine de forage Download PDF

Info

Publication number
EP0123671A2
EP0123671A2 EP84890067A EP84890067A EP0123671A2 EP 0123671 A2 EP0123671 A2 EP 0123671A2 EP 84890067 A EP84890067 A EP 84890067A EP 84890067 A EP84890067 A EP 84890067A EP 0123671 A2 EP0123671 A2 EP 0123671A2
Authority
EP
European Patent Office
Prior art keywords
rotor
drill
drill pipe
drilling
gripping elements
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
EP84890067A
Other languages
German (de)
English (en)
Other versions
EP0123671A3 (en
EP0123671B1 (fr
Inventor
Walter Mayerhofer
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.)
Vereinigte Edelstahlwerke AG
Original Assignee
Vereinigte Edelstahlwerke AG
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 Vereinigte Edelstahlwerke AG filed Critical Vereinigte Edelstahlwerke AG
Publication of EP0123671A2 publication Critical patent/EP0123671A2/fr
Publication of EP0123671A3 publication Critical patent/EP0123671A3/de
Application granted granted Critical
Publication of EP0123671B1 publication Critical patent/EP0123671B1/fr
Expired 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/16—Connecting or disconnecting pipe couplings or joints

Definitions

  • the invention relates to a device for drilling, in particular for rotary drilling of rock or the like. With a device for loosening the drill pipe.
  • a multipart drill pipe is used, which is gradually extended respectively with another drill rod.
  • the process is such that the boring bar, including the drill bit, is advanced until the connection point between the stub and the boring bar comes close to the borehole.
  • the drill rod is then held in a rotationally locking manner, for example with an open-ended wrench or the like, and the stub is rotated out of the rod in the opposite direction to drilling or rotary impact drilling, be it via the rotating assembly or its own motor.
  • Hiebei it can be advantageous before loosening the connection that the rod is pulled a short distance from the borehole, whereupon so-called blows on the stub take place, whereby the threaded connection is easier to release.
  • the drilling unit is arranged on a carriage and is moved backwards after loosening the threaded connection, whereupon a new boring bar is inserted, which is connected via the normal rotary movement to the drill pipe, which is still held, and the stub.
  • the fork wrench is then disengaged and the drill pipe is ready for further use. If the drill hole has now been made to the desired depth, the individual drill rods must be pulled out of the drill hole again. It is necessary for the connections of the boring bars to be loosened step by step.
  • boring bars are usually used, which on one End have an external thread and at the other end an internal thread, both the external and the internal thread having the same diameter.
  • the sleeves which have the internal thread, are subject to a particularly high load, so that the sleeves break prematurely. It has therefore proven to be favorable that the drill rods have external threads at their two ends, each of which can be connected via a sleeve which has a corresponding internal thread, which can either be continuous or divided into two and in the same direction.
  • the present invention has set itself the goal of creating a device which avoids the disadvantages mentioned above, and allows to apply the moment for loosening the jammed thread and then screwing it onto the linkage, with no positive locking between the gripping elements and sleeve being required.
  • Open-end wrench or the like which preferably holds the drill pipe pointing into the borehole, consists essentially in that at least one gripping element is provided in a rotor which is rotatable about the axis of the drill pipe in a housing and which can be actuated by the further drive the gripping element (s) has a working surface (s) which, in contact with the drill pipe, enclose an angle equal to or smaller than the self-locking angle (s).
  • the production of boreholes and in particular the pulling of the drill pipe can be carried out particularly quickly since the gripping elements only act on the drill sleeve or the like via frictional engagement, as a result of which a high torque can be exerted, even if the sleeve or the like is already subject to severe wear during drilling operation, with unscrewing of the boring bar being possible simultaneously in the same working position.
  • a particularly simple constructive solution which at the same time allows the work surface to be easily adapted to the circumstances, consists in that at least three cam-shaped gripping elements are mounted on the rotor, wherein the respective work surfaces are partially cylindrical, and the axis of the cylinder is outside the pivot axis of the gripping elements.
  • the gripping elements can be replaced particularly quickly, which is particularly important when a gripping element breaks or when the device is changed over for a drill pipe with a different diameter Meaning is.
  • the rotor has an external toothing into which a drive pinion meshes.
  • the rotor has a hollow axis through which the drill pipe can be guided, this results in a particularly simple and trouble-free construction.
  • a ring which has drivers for the gripping elements, is mounted in the rotor and can be held by a housing surrounding the rotor, the gripping elements can be engaged in a particularly simple manner by rotating the rotor.
  • the gripping elements can easily be pivoted out by rotating in the opposite direction.
  • Accurate centric guidance of the drill string which is advantageous for fast clamping of the drill string in the device, can be achieved by providing at least one, preferably two guides centrally to the rotor, in particular with a truncated cone and a cylindrical surface for the drill string (are).
  • the relative movement between the drill pipe and the device according to the invention when the invention is solved is taken into account in a particularly advantageous manner in that the rotor, preferably together with the further drive on the mount, can be moved in the axial direction of the drill pipe, and possibly via resilient elements, cylinders or the like. is movable into a rest position.
  • FIG. 1 shows a mobile drilling device with drilling arm and drill carriage
  • FIG. 2 shows a drilling arm
  • FIGS. 3 and 4 shows a clamping device with cam-like gripping elements
  • FIG. 5 shows the schematic representation of a clamping device with rollers.
  • a vehicle 2 is provided on the vehicle 1 shown in FIG. 1, which is calculated for the operator. Furthermore, a hydraulic unit 3, which serves to drive the drilling arm 4 and the rotary impact unit 5 and the clamping and turning device 6 and the key 7, is provided. The percussion device lowers along the carriage 8 during drilling until the stub 9 comes close to the clamping and rotating device. The threaded connection between the drill pipe and the stub is then released and the rotary impact device is brought into the starting position shown in the drawing. W pus a new drill rod is placed in the rig, the drill string downhole held by the key 7 connected to the new drill string and simultaneously screwed into the Einsteckstummel. This process is repeated until the desired drilling depth is reached. Then the drill pipe is lifted step by step and one drill rod is separated from the remaining drill pipe, the drill pipe located in the borehole being held in place by the key 7, and the connection is released via the clamping and rotating device.
  • the drilling arm shown in FIG. 2 is connected to the tracked vehicle via a bracket 10.
  • the console 10 has flanges 11 which carry a telescopic boom 12 which can be adjusted in height and in the sides via the cylinders 13, 14.
  • the boom carries a swivel head 15, which in turn carries the mount holder 16, pivotably via a cylinder 16a.
  • the carriage 8 has at one end longitudinally displaceable the impact rotary drilling device 5 and at the other end the clamping and rotating device 6. In the position shown in FIG. 2, an essentially horizontally oriented borehole is drilled.
  • FIG. 3 shows a clamping and rotating device, partly in section and in top view, whereas in FIG. 4 the section along line 4/4 according to FIG. 3 is shown.
  • the housing 17 is guided on the carriage 8 via a slide shoe 18. 4, a rotary motor 19 is fastened in the housing.
  • This rotary motor 19 drives the rotor 21 via a pinion 20.
  • This rotor has an external toothing 22.
  • the rotor has a hollow axis 23 which is mounted in the housing 17.
  • the self-locking angle should not be greater than three angular degrees if the gripping elements J and the drill pipe are made of steel. That 27 of the grasping element is defined by 2, where the compound of the axis of the drill string 30 and the axis of rotation: the self-locking angle in this case, as shown in Figure 3a can be seen by the sum of W and inkelcC i. E.
  • the second leg of these two angles is defined by the line of contact 37 between the gripping element and the sleeve.
  • this angle is equal to or smaller than the angle of the self-locking, the gripping elements come to the immovable engagement on the smooth surface of the drill string, whereby effortless loosening is given, while at the same time a high moment arises over the relatively large diameter of the rotor 21 the sleeve can be applied so that trouble-free loosening is easily possible.
  • FIG. 5 which can be installed in the device according to FIGS. 3 and 4, it has inner wedge surfaces 38 which cooperate with rollers 39, these rollers being able to be brought back into contact with the drill sleeve.
  • the angle ⁇ of the self-locking is defined here by the tangents on the roller 39, which is given by the points of contact on the sleeve 31 or on the wedge-shaped surface 38.
  • the clamping and turning device is moved from its position along the mount when the sleeve is unscrewed. When the unscrewing process has ended, the device is returned to its starting position by means of the spring 40.

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 Exploitation, And Mining Machines And Methods (AREA)
EP19840890067 1983-04-07 1984-04-05 Machine de forage Expired EP0123671B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1233/83 1983-04-07
AT0123383A AT382682B (de) 1983-04-07 1983-04-07 Vorrichtung zum bohren

Publications (3)

Publication Number Publication Date
EP0123671A2 true EP0123671A2 (fr) 1984-10-31
EP0123671A3 EP0123671A3 (en) 1985-04-03
EP0123671B1 EP0123671B1 (fr) 1988-09-14

Family

ID=3509481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840890067 Expired EP0123671B1 (fr) 1983-04-07 1984-04-05 Machine de forage

Country Status (5)

Country Link
EP (1) EP0123671B1 (fr)
JP (1) JPS59187991A (fr)
AT (1) AT382682B (fr)
AU (1) AU566591B2 (fr)
DE (1) DE3474050D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2588914A1 (fr) * 1985-10-22 1987-04-24 Tampella Oy Ab Dispositif d'ouverture pour tiges de forage
FR2588913A1 (fr) * 1985-10-22 1987-04-24 Tampella Oy Ab Dispositif d'ouverture pour equipement de forage a allonges de tige

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6125791U (ja) * 1984-07-23 1986-02-15 石垣食品株式会社 板付き切りかまぼこ
DE3819537A1 (de) * 1988-06-08 1989-12-14 Bauer Spezialtiefbau Ankerbohrgeraet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2043610A1 (fr) * 1969-05-22 1971-02-19 Becker Drills Ltd
US3662867A (en) * 1970-03-13 1972-05-16 Robert B Kinzbach Force transmitting coupling
US3760658A (en) * 1971-01-08 1973-09-25 W Guier Apparatus for supporting pipe tongs
GB2084062A (en) * 1980-09-16 1982-04-07 Mosing Donald Eugene Method and apparatus for connecting and disconnecting tubular members

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2043610A1 (fr) * 1969-05-22 1971-02-19 Becker Drills Ltd
US3662867A (en) * 1970-03-13 1972-05-16 Robert B Kinzbach Force transmitting coupling
US3760658A (en) * 1971-01-08 1973-09-25 W Guier Apparatus for supporting pipe tongs
GB2084062A (en) * 1980-09-16 1982-04-07 Mosing Donald Eugene Method and apparatus for connecting and disconnecting tubular members

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2588914A1 (fr) * 1985-10-22 1987-04-24 Tampella Oy Ab Dispositif d'ouverture pour tiges de forage
FR2588913A1 (fr) * 1985-10-22 1987-04-24 Tampella Oy Ab Dispositif d'ouverture pour equipement de forage a allonges de tige
GB2181683A (en) * 1985-10-22 1987-04-29 Tampella Oy Ab A centralizer/opening device for extension rod drilling equipment
GB2181683B (fr) * 1985-10-22 1989-10-04 Tampella Oy Ab
AT390124B (de) * 1985-10-22 1990-03-26 Tampella Oy Ab Oeffnungsanordnung zum loesen eines aus verschraubten bohrstangen bestehenden bohrgestaenges einer ausruestung fuer langlochbohrung
AT393470B (de) * 1985-10-22 1991-10-25 Tampella Oy Ab Vorrichtung zum bohren langer bzw. tiefer bohrloecher

Also Published As

Publication number Publication date
AU2633384A (en) 1984-10-11
ATA123383A (de) 1986-08-15
JPS59187991A (ja) 1984-10-25
DE3474050D1 (en) 1988-10-20
EP0123671A3 (en) 1985-04-03
EP0123671B1 (fr) 1988-09-14
AU566591B2 (en) 1987-10-22
AT382682B (de) 1987-03-25

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