EP0123671B1 - Vorrichtung zum Bohren - Google Patents

Vorrichtung zum Bohren Download PDF

Info

Publication number
EP0123671B1
EP0123671B1 EP19840890067 EP84890067A EP0123671B1 EP 0123671 B1 EP0123671 B1 EP 0123671B1 EP 19840890067 EP19840890067 EP 19840890067 EP 84890067 A EP84890067 A EP 84890067A EP 0123671 B1 EP0123671 B1 EP 0123671B1
Authority
EP
European Patent Office
Prior art keywords
rotor
drill column
drill
drilling device
drilling
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
Application number
EP19840890067
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0123671A3 (en
EP0123671A2 (de
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/de
Publication of EP0123671A3 publication Critical patent/EP0123671A3/de
Application granted granted Critical
Publication of EP0123671B1 publication Critical patent/EP0123671B1/de
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 multi-part drill pipe is used, which is gradually extended with a further 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 pipe e.g. with a wrench or the like. Rotationally held and the stub is rotated in the opposite direction for drilling or rotary impact drilling, be it via the rotating assembly or its own motor.
  • the rod before loosening the connection, it can be advantageous for the rod to be pulled a short distance out of the borehole, whereupon so-called blows occur on the stub, which makes the threaded connection more easily detachable.
  • 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 to the drill pipe, which is still held in place, and the plug-in connector using the normal rotary movement.
  • 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.
  • the connections of the boring bars are loosened step by step.
  • boring bars are usually used which have an external thread at one end and an internal thread at the other end, with both the external and the internal thread having the same diameter. With rotary impact drilling, the sleeves, which have the internal thread, are subject to a particularly high load, so that the sleeves break prematurely.
  • the boring bars 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.
  • a device for drilling with multi-part drill pipe is known, the parts of which can be connected to one another via internal and external threads, a drive being provided for releasing the drill pipe, which holds the drill pipe via cam-shaped gripper elements.
  • the cam-shaped grippers are moved via gear wheels which engage in an internal ring gear.
  • the internal ring gear is moved by a drive motor via another spur gear.
  • a disengageable driver solves the problem of a quick connection between the drilling device and the drill pipe, i.e. it is an advantage if there is a frictional connection without a long start-up time.
  • the present invention had for its object to provide a device for drilling, which allows the gripper elements to be engaged in a particularly simple manner by rotating the rotor.
  • the aim is achieved in that a ring, which has drivers for the gripper elements, is mounted in the rotor and can be held by a housing surrounding the rotor.
  • the production of boreholes and in particular the pulling of the drill pipe can be carried out particularly quickly, since the gripping elements can be engaged and quickly applied by rotating the rotor in a particularly simple manner.
  • the gripping elements can easily be pivoted out by rotating in the opposite direction.
  • Accurate centric guidance of the drill pipe which is advantageous for fast clamping of the drill pipe 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 pipe .
  • 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, the respective working surfaces being partially cylindrical, and the axis of the cylinder being 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 in place 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 pipe which is advantageous for fast clamping of the drill pipe 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 pipe (are).
  • the relative movement between the drill pipe and the device according to the invention when solving the object according to the invention is taken into account in a particularly favorable 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 optionally 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 show 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. Then the threaded connection between the drill pipe and the stub is released and the rotary impact device is brought into the starting position shown in the drawing. Furthermore, a new boring bar is inserted into the mount, the drill string located in the borehole is held in place by key 7, connected to the new boring bar and at the same time screwed into the stub. This process is repeated until the desired drilling depth is reached. Then the drill pipe is gradually raised and one drill rod is separated from the rest of the drill pipe, the drill pipe located in the borehole being held in place by the key 7, and the connection being 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. A substantially horizontally aligned borehole is drilled.
  • FIG. 3 shows a clamping and rotating device, partly in section and in plan view, whereas in FIG. 4 the section along line 4/4 according to FIG. 1 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.
  • Guides 24, which are frustoconical, engage in the hollow axis on both sides have surface 25 and a cylindrical guide surface 26.
  • cam-like gripping elements 28 are mounted in the rotor via axes.
  • the self-locking angle should not be greater than three degrees if the gripping elements and the drill pipe are made of steel.
  • the self-locking angle in this case is given by the sum of the angles ⁇ i and a 2 , which is defined by the connection of the axis of the drill pipe 30 and the axis of rotation 27 of the gripping element.
  • 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 less 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 a of the self-locking is defined here by the tangents on the roller 39, which is given in each case by the points of contact on the sleeve 31 or on the wedge-shaped surface 38.
  • the clamping and rotating device is moved from its position along the carriage when unscrewing the sleeve.
  • 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 Vorrichtung zum Bohren Expired EP0123671B1 (de)

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 EP0123671A2 (de) 1984-10-31
EP0123671A3 EP0123671A3 (en) 1985-04-03
EP0123671B1 true EP0123671B1 (de) 1988-09-14

Family

ID=3509481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840890067 Expired EP0123671B1 (de) 1983-04-07 1984-04-05 Vorrichtung zum Bohren

Country Status (5)

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

Families Citing this family (4)

* 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
FI854120L (fi) * 1985-10-22 1987-04-23 Tampella Oy Ab Oeppningsanordning foer borrstaenger foer en skarvstaongsborrningsutrustning.
FI78340C (fi) * 1985-10-22 1989-07-10 Tampella Oy Ab Oeppningsanordning foer en utrustning foer skarvstaongsborrning.
DE3819537A1 (de) * 1988-06-08 1989-12-14 Bauer Spezialtiefbau Ankerbohrgeraet

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA876536A (en) * 1969-05-22 1971-07-27 W. Becker Floyd Tong assembly for drill pipes
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
US4372026A (en) * 1980-09-16 1983-02-08 Mosing Donald E Method and apparatus for connecting and disconnecting tubular members

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
AU566591B2 (en) 1987-10-22
AT382682B (de) 1987-03-25
EP0123671A2 (de) 1984-10-31

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