EP0119375A1 - Dispositif de forage et de mise en place des boulons d'ancrage, notamment pour le minage - Google Patents

Dispositif de forage et de mise en place des boulons d'ancrage, notamment pour le minage Download PDF

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Publication number
EP0119375A1
EP0119375A1 EP83890226A EP83890226A EP0119375A1 EP 0119375 A1 EP0119375 A1 EP 0119375A1 EP 83890226 A EP83890226 A EP 83890226A EP 83890226 A EP83890226 A EP 83890226A EP 0119375 A1 EP0119375 A1 EP 0119375A1
Authority
EP
European Patent Office
Prior art keywords
stub
drilling
anchor
end region
drill
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
EP83890226A
Other languages
German (de)
English (en)
Other versions
EP0119375B1 (fr
Inventor
Konrad Schön
Werner Schantl
Franz Pascuttini
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 EP0119375A1 publication Critical patent/EP0119375A1/fr
Application granted granted Critical
Publication of EP0119375B1 publication Critical patent/EP0119375B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B25D17/084—Rotating chucks or sockets
    • 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/003—Machines for drilling anchor holes and setting anchor bolts

Definitions

  • anchors are being used for the removal of tunnels, be it in road construction or mining, whether they are so-called slack anchors, which are not tensioned, or tension anchors.
  • the grown rock or the raw materials to be extracted for example coal, must be extracted or mined, whether by blasting or by means of a partial cut or full cut milling machine.
  • blast holes are made which, as a rule, have a larger diameter when both tunnels and tunnels are being excavated than those drill holes that are required for anchoring.
  • the anchors can be set.
  • the insert stub located in the boring machine be it hydraulically or pneumatically operated, be it in the percussion boring machine or boring machine, which is used to transmit force, namely both the impact and the torque between the boring machine and the drill pipe, must be replaced.
  • the insertion stub has a thread on its end pointing out of the output housing for connection to the drill pipe. After the threaded connection between the stub and the boring machine is separated, the stub can be removed from the boring machine after loosening a holding device, for example a threaded cap. Then a new stub must be used, which usually has a small thread for connection to another drill pipe, which is used to drill the anchor holes.
  • the drill pipe After the anchor hole has been made with the now smaller drill pipe with a smaller drill bit, the drill pipe has to be removed from the drill hole and it becomes then the drill pipe is detached from the stub, the stub is removed from the boring machine and a further stub is inserted into the boring machine, for setting and rotating the armature.
  • the rotation of the anchor in the borehole is not only necessary to make it easier to insert the anchor in the borehole, but it is also intended on the one hand to mix, for example, a two-component synthetic resin and to better fill the adhesive in the borehole.
  • Such a two-component adhesive hardens within a few seconds, so that the anchors can be tightened immediately afterwards, for example via their anchor nut, with rotation in the opposite direction being necessary for insertion.
  • the setting of anchors is a particularly simple method for expanding a section or tunnel in relation to an expansion with tubbings or the like, but the manipulations caused by the installation and removal of the insertion stub are due to the different requirements, even with a quick change of the same, relatively complex. Furthermore, it must be taken into account that after changing the stub, they must be stored on site, which, in order to avoid premature wear of the boring machine, would require careful cleaning before reinstallation. Such careful cleaning is hardly possible, especially under the difficult conditions of mining.
  • the present invention has set itself the task of creating an anchor drilling and setting device, in particular for mining, with which the necessary blast holes can also be produced if necessary, the set-up times being as short as possible or should be avoided at all when changing anchor drilling and anchor setting.
  • the anchor drilling and setting device in particular for mining, with a mount on which a, preferably hydraulic, rotary, in particular dredging boring machine is mounted so as to be longitudinally displaceable, the drilling machine having a receptacle on the output side for an insertion stub end, this being by a holding device , e.g. Threaded cap or the like is held in the boring machine, and the plug-in stub has wings or the like for transmitting the torque between the boring machine and drill pipe or the like, and the end region of the plug-in stub pointing out of the boring machine has a thread for connecting to a drill pipe or Like.
  • a holding device e.g. Threaded cap or the like
  • the threaded end portion of the stub has at least two mating surfaces for cooperation with at least two further mating surfaces of an intermediate piece, the mating surfaces and / or their generatrix having an angle of less than 90 °, in particular 0 ° include the drilling axis.
  • the blast holes can be drilled on the one hand and, on the other hand, with the same diameter of the blast holes with the anchor holes, the anchor holes can be drilled with the same insertion stub. If the anchor holes have a smaller diameter, you can either work with a drill pipe with an upset end and thread, or you have to change the stub.
  • This stub then again has a thread and at least two mating surfaces. The thread is used for cooperation with a drill rod, namely the drill pipe with which the anchor holes are made, whereas the mating surfaces cooperate with the other mating surfaces of the intermediate piece, so that a torque can be transmitted from the stub to the intermediate piece in both directions.
  • the rock anchor can be rotated in both directions, so that on the one hand the binder is mixed in the anchor hole and the anchor hole is completely filled with the adhesive, after which tensioning of the anchor hole is carried out by turning in the opposite direction
  • Anchor can be achieved via a tensioning element s, for example nut or the like.
  • the end region of the plug-in stub has at least two outer mating surfaces, in particular six prism surfaces, when viewed in the drilling direction, and then has an external thread when viewed in the axial direction, very high forces, namely both impact forces and torques, can be transmitted.
  • the stub viewed in the direction of drilling, has an essentially radial recess in front of the mating surfaces and the thread, which opens into a blind hole-like flushing channel, set-up times which are caused by the leakage of seals which are arranged in the boring machine, can be prevented by feeding the flushing medium outside the boring machine.
  • the end region of the intermediate piece opposite the end region having the mating surfaces has an axial recess for receiving an anchor end, which carries carrier surfaces for rotating the armature and / or an anchor nut or the like.
  • the intermediate piece and the stub carry a cooperating safeguard against unwanted axial withdrawal.
  • Such security can be of particular interest if difficult working conditions e.g. are given in mining.
  • the mating surfaces are adjacent to a cylindrical surface which cooperates with the internal thread of the stub, this results in particularly good guidance of the intermediate piece.
  • FIG. 1 shows a drilling arm with drill carriage and boring machine
  • FIG. 2 shows a boring machine, partially torn open with a stub
  • FIG. 3 shows a stub with a 4, another plug-in stub with an intermediate piece.
  • the drill arm shown in FIG. 1 with drill mount is connected to a drill carriage or the like via console 1.
  • the console has four linkages 2 for the drill boom 3 and the lifting and lowering cylinder 4 and pivot cylinder 5.
  • the drill boom can also be designed telescopically.
  • the drill boom 3 has a rotary motor 6, which enables a rotary movement about the geometric axis of the drill boom 3.
  • the fork head 7 carries, via the swivel shaft 8, the drill carriage holder 9, which in turn carries the carriage 10 and on it a hydraulic hammer drill 11 which is longitudinally displaceable.
  • a stub 12 is inserted on the output side.
  • This plug-in stub carries wings 13 which cooperate with a claw 14 through which a torque is transmitted.
  • the insertion stub cooperates with the percussion piston 15 at one end.
  • the insertion stub 12 is held in the rotary impact boring machine 11 by means of a threaded cap 16.
  • the stub has a radial recess, namely bore 17, which opens into a blind hole-like flushing channel 18.
  • a rope-like internal thread 19 is provided, which is used to fasten a drill pipe, not shown, be it for drilling explosive holes or anchor holes.
  • an internal hexagon 20 with fitting surfaces 21 is provided above the Bore 17 .
  • a housing 22 which is pushed over the stub and which is connected to the threaded cap 16 in a rotationally secure manner.
  • This housing is sealed off from the plug-in stub by lip seals 23 and an O-ring 24.
  • a flushing agent is supplied via the nozzle 25. The flushing agent then passes through the collecting space 26 into the bore 17 and then into the flushing channel.
  • the stub 12 shown in Fig. 3 has wings 13 at its rear end, and a cable internal thread 19 is provided at the other end, the internal diameter of the internal thread being smaller than the diameter of the inscribed circle of the subsequent internal hexagon 20, the mating surfaces 21 of which cooperate with those of the intermediate piece 27.
  • the intermediate piece 27 has an external hexagon 28 with mating surfaces 29 at the end facing the stub. Furthermore, a cylinder 30 is adjacent, which cooperates with the internal thread 19 when the intermediate piece is inserted into the stub.
  • the intermediate piece also has an axial recess 31 into which the end of a rock anchor 32 can be inserted. This axial recess then widens into a hexagon socket 33, which serves to tighten the anchor nut 34.
  • a split pin 35 is also provided in the anchor, which secures the nut against unintentional removal.
  • an axial trigger safety device can be provided between the stub and the intermediate piece, be it in the form of a spring pin of a spring-loaded ball that snaps into a recess, or the like
  • this has an external hexagon 36 with mating surfaces 37, a cylindrical threaded piece 38 being provided on these, viewed in the drilling direction.
  • the mating surfaces 37 of the stub cooperate with mating surfaces 39 of the intermediate piece 27.
  • the intermediate piece 27 also has a cylindrical recess 40 into which the threaded piece 38 can be inserted.
  • the receptacle for the rock anchor 32 and the associated nut 34 is analog. as formed in Fig. 3.
  • a plug-in stub according to FIG. 3 or FIG. 4 is inserted and fixed in the hydraulic hammer drill.
  • the stub can then be connected to a drill pipe for drilling blast holes. Since the drill bit for blast holes generally has a larger diameter than the drill bit for anchor holes, the thread for the drill rods for blast holes is provided with a larger diameter than the thread for the drill rods for the anchor holes, unless the drill rod for the anchor holes have an upset end.
  • a device for the lateral supply of flushing media can be provided via the insertion stub, with a central supply of the flushing medium then via the rotary impact drill Machine is not required so that the corresponding easily destructible seals can be replaced without the stub having to be removed from the rotary impact drill.
  • the insertion stub irrespective of whether it has an internal or an external thread, can be provided with the drill pipe for the anchor holes.
  • An anchor hole is then drilled, the drill pipe is removed from the drill hole, and adhesive cartridges for the rock anchor are placed in the drill hole.
  • an intermediate piece is inserted into the stub, the mating surfaces of the stub cooperating with those of the intermediate piece.
  • a rock anchor including the nut is inserted into the end of the intermediate piece.
  • the percussion drilling machine is then again longitudinally moved, whereby the armature is rotated, for example nuts, with a simultaneous rotary movement, namely counter to the tightening direction of the tensioning elements. Cooperation between the nuts and the spacers is provided via the corresponding hexagon socket. If the rock anchor has moved into the anchor hole, wait a few seconds until the adhesive in the anchor hole has hardened, whereupon the impact drill is turned in the opposite direction, whereby the tensioning elements are tightened and the anchor is tightened.
  • the mating surfaces of the stub and the intermediate piece do not have to be flat, as indicated in the examples, but they can be conical or cylindrical or other types of mating surfaces. In any case, it is necessary that corresponding rotary movements can be transmitted via the mating surfaces between the stub and the intermediate piece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Rock Bolts (AREA)
EP83890226A 1982-12-17 1983-12-16 Dispositif de forage et de mise en place des boulons d'ancrage, notamment pour le minage Expired EP0119375B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0459782A AT375735B (de) 1982-12-17 1982-12-17 Ankerbohr- und setzvorrichtung, insbesondere fuer den bergbau
AT4597/82 1982-12-17

Publications (2)

Publication Number Publication Date
EP0119375A1 true EP0119375A1 (fr) 1984-09-26
EP0119375B1 EP0119375B1 (fr) 1987-09-09

Family

ID=3565994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83890226A Expired EP0119375B1 (fr) 1982-12-17 1983-12-16 Dispositif de forage et de mise en place des boulons d'ancrage, notamment pour le minage

Country Status (7)

Country Link
EP (1) EP0119375B1 (fr)
JP (1) JPS59165794A (fr)
AT (1) AT375735B (fr)
AU (1) AU567313B2 (fr)
DE (1) DE3373510D1 (fr)
FI (1) FI834646A (fr)
ZA (1) ZA839375B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2077485A2 (es) * 1991-07-11 1995-11-16 Ingemas S A Mecanismo de empuje suplementario para martillos de percusion.
CN101705831B (zh) * 2009-10-22 2011-10-19 武汉武大巨成加固实业有限公司 一种后扩孔自锁锚杆快速安装支护的施工方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE338728C (de) * 1921-07-01 Wilhelm Vullride Bohrgestaenge mit auswechselbarem Bohrer
US3554306A (en) * 1968-11-29 1971-01-12 Carmet Co Polygonal drill rod assembly
US4101141A (en) * 1977-03-16 1978-07-18 Copper Range Company Drive chuck
DE7931535U1 (de) * 1979-11-08 1980-04-03 Huette & Co Bohrtechnik Gmbh, 5960 Olpe Kopfstueck fuer bohrgeraete
FR2436872A1 (fr) * 1978-09-21 1980-04-18 Lorentz Robert Dispositif d'accouplement
US4339006A (en) * 1979-12-04 1982-07-13 General Electric Company Method and apparatus for mine roof drilling

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU500559B2 (en) * 1976-04-05 1979-05-24 Sandvik Ab A percussion drill bit
AU521975B2 (en) * 1978-08-24 1982-05-13 Nansteel Inc Drill bit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE338728C (de) * 1921-07-01 Wilhelm Vullride Bohrgestaenge mit auswechselbarem Bohrer
US3554306A (en) * 1968-11-29 1971-01-12 Carmet Co Polygonal drill rod assembly
US4101141A (en) * 1977-03-16 1978-07-18 Copper Range Company Drive chuck
FR2436872A1 (fr) * 1978-09-21 1980-04-18 Lorentz Robert Dispositif d'accouplement
DE7931535U1 (de) * 1979-11-08 1980-04-03 Huette & Co Bohrtechnik Gmbh, 5960 Olpe Kopfstueck fuer bohrgeraete
US4339006A (en) * 1979-12-04 1982-07-13 General Electric Company Method and apparatus for mine roof drilling

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
E/MJ, Band 173, Nr. 11, November 1972 Seite 64AA *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2077485A2 (es) * 1991-07-11 1995-11-16 Ingemas S A Mecanismo de empuje suplementario para martillos de percusion.
CN101705831B (zh) * 2009-10-22 2011-10-19 武汉武大巨成加固实业有限公司 一种后扩孔自锁锚杆快速安装支护的施工方法

Also Published As

Publication number Publication date
AT375735B (de) 1984-09-10
AU567313B2 (en) 1987-11-19
JPS59165794A (ja) 1984-09-19
ZA839375B (en) 1984-09-26
EP0119375B1 (fr) 1987-09-09
ATA459782A (de) 1984-01-15
DE3373510D1 (en) 1987-10-15
FI834646A (fi) 1984-06-18
FI834646A0 (fi) 1983-12-16
AU2237783A (en) 1984-06-21

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