EP0329835B1 - Bohr-Injektionsanker - Google Patents

Bohr-Injektionsanker Download PDF

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Publication number
EP0329835B1
EP0329835B1 EP88119658A EP88119658A EP0329835B1 EP 0329835 B1 EP0329835 B1 EP 0329835B1 EP 88119658 A EP88119658 A EP 88119658A EP 88119658 A EP88119658 A EP 88119658A EP 0329835 B1 EP0329835 B1 EP 0329835B1
Authority
EP
European Patent Office
Prior art keywords
drilling
injection anchor
channel
cutting edges
anchor according
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 - Lifetime
Application number
EP88119658A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0329835A2 (de
EP0329835A3 (de
Inventor
Ernst-Friedrich Dipl.-Ing. Ischebeck
Joachim Isenberg
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.)
Friedr Ischebeck GmbH
Original Assignee
Friedr Ischebeck GmbH
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 Friedr Ischebeck GmbH filed Critical Friedr Ischebeck GmbH
Priority to AT88119658T priority Critical patent/ATE84851T1/de
Publication of EP0329835A2 publication Critical patent/EP0329835A2/de
Publication of EP0329835A3 publication Critical patent/EP0329835A3/de
Application granted granted Critical
Publication of EP0329835B1 publication Critical patent/EP0329835B1/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
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-type inserts
    • 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0053—Anchoring-bolts in the form of lost drilling rods

Definitions

  • the invention relates to a drill injection anchor, in particular a monobloc injection anchor, with a thread passage running through the casing wall and a drill bit arranged at one end with associated cutting edges and a central channel running in the axial direction and ending in the area of the drill bit for supplying a detergent or the like.
  • a continuous thread extends on the casing side, at one end of which a drill bit is arranged.
  • This is equipped with two carbide cutting edges on the tip.
  • Two diametrically opposed channels lead to these, which open into an annular space.
  • a radial channel emanates from the latter and allows flushing agent or the like to be fed in during drilling through a central channel running in the axial direction and ending in the area of the drill bit.
  • the diameter of the drill bit is significantly larger than that of the boring bar. This creates an annular space for the removal of cuttings and washing-up liquid.
  • drill injection anchors are known, the drill heads of which are equipped with cross or X-cutters and are provided with a central flushing hole.
  • a disadvantage of these designs is the complicated construction of the drill head, which is only provided with the carbide cutting edges at the factory can be equipped. Leaving these drilling injection anchors in a hole is therefore associated with high costs.
  • the object of the invention is based on the object of designing the cutting edges of a drilling injection anchor of the type mentioned at the beginning with higher degrees of efficiency and service life, as far as possible in a simple and cost-effective manner.
  • the object is achieved in that the cutting edges are designed as weld beads on the ring surface surrounding the channel mouth.
  • a welding bead which is not further processed or sharpened, to a drill injection anchor provided with a thread passage running through the casing wall is much cheaper.
  • Another advantage of a disposable drill made in this way is that the application of welding beads can possibly even take place on site, for example at the construction site. If a shorter dimension of the injection anchor is desired, all that needs to be done is to cut to length and then apply the welding beads.
  • the arrangement of these approx. 2mm high welding caterpillar blades on the ring surface of the drill injection anchor crown surrounding the axial channel opening limits the impact path of the drill during normal, impacting drilling, so that the central area of application of the drill injection anchor, especially with soft rocks and soils Rinse hole not blocked.
  • the hardness of an applied welding bead is approx. 60 HRC and is therefore essential softer than carbide, but sufficient for a one-way drill.
  • an advantageous feature is that the ends of the welding bead cutters form protruding elevations on the casing wall side. This configuration increases the stability of the cutting protrusions, which prevents them from tearing off during the drilling process.
  • At least one cutting edge protrudes beyond the inner boundary line of the ring surface into the channel cross section. This measure has the effect that the drill core is shattered during the drilling process and the central flushing channel is thus kept free.
  • This construction can be produced by simple build-up welding and is therefore optimally designed in terms of production and cost.
  • the lateral surface increase extends over the width of a thread base to the apex of the adjacent thread.
  • the ring surface is frustoconical, the baseline of smaller diameter being assigned to the channel.
  • the drilling injection anchor 1 shown in FIG. 1 has a thread passage 2 running through the jacket wall. In the middle and over the entire length of the drilling injection anchor 1, running in the axial direction, there is a flushing channel 3, which is used to supply a flushing agent or the like.
  • the annular surface 6 that surrounds the channel opening 5 formed by the flushing channel 3 in the end face 4 are three welding bead cutters 7, 8 arranged radially and at the same angle to each other. These approximately 2mm high welding caterpillar blades 7, 8 extend beyond the outer edge of the ring surface 6 and form protruding elevations 10 on the casing wall side 10.
  • the ring cross section resulting from this approximately 2mm large projection is necessary for the drainage of the cuttings and is the same Cross section of the central flushing channel 3.
  • a welding bead cutter 7 projects beyond the inner boundary of the annular surface 6 and projects into the cross section of the flushing channel 3.
  • the protrusion 11 formed in this way ends shortly before the center line z of the drilling injection anchor 1 and is used during drilling to smash a drilling core (not shown) in order to prevent the flushing channel 3 from becoming blocked.
  • a flushing agent flowing out of the central and yet eccentric channel opening 5 is directed into three partial flows by the three welding bead cutters 7, 8 and is routed according to plan over the end face 4 into the annular space 12. This ensures optimal flushing and removal of the cuttings.
  • the annular surface 6 'of the drilling injection anchor 1' is frustoconical, the baseline of smaller diameter being assigned to the irrigation channel 3 '.
  • This ring surface 6 ' are also radially and at the same angle to each other three welding caterpillars 7', 8 'assigned, which form on the casing wall side 9' protruding ridges 10 '. These increases 10 'extend across the width of a thread base 13 to the apex 14 of the adjacent thread.
  • Drilled injection anchor 1 By applying welding bead cutting edges 7, 8, it is easy to manufacture and more economical to manufacture Drilled injection anchor 1 created, which also optimally meets the requirements for flushing and removal of cuttings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Processing Of Solid Wastes (AREA)
EP88119658A 1988-02-26 1988-11-25 Bohr-Injektionsanker Expired - Lifetime EP0329835B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88119658T ATE84851T1 (de) 1988-02-26 1988-11-25 Bohr-injektionsanker.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3806128A DE3806128A1 (de) 1988-02-26 1988-02-26 Bohr-injektionsanker
DE3806128 1988-02-26

Publications (3)

Publication Number Publication Date
EP0329835A2 EP0329835A2 (de) 1989-08-30
EP0329835A3 EP0329835A3 (de) 1991-03-06
EP0329835B1 true EP0329835B1 (de) 1993-01-20

Family

ID=6348269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88119658A Expired - Lifetime EP0329835B1 (de) 1988-02-26 1988-11-25 Bohr-Injektionsanker

Country Status (5)

Country Link
EP (1) EP0329835B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) ATE84851T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE3806128A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES2038275T3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GR (1) GR3006917T3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023285831A1 (en) * 2021-07-16 2023-01-19 Hypertunnel Ip Limited Integrated drilling injection and extraction device and method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE174103T1 (de) * 1995-01-06 1998-12-15 Weidmann H Ag Ankerstab für einen bohr-injektionsanker
DE10017761B4 (de) * 2000-04-10 2013-03-28 Hilti Aktiengesellschaft Verwendung eines Rohrankers mit Profilierung
DE10106695B4 (de) * 2001-02-14 2010-11-25 Friedr. Ischebeck Gmbh Bohrkrone für einen Bohr- oder Injektionsanker
DE102011085818A1 (de) * 2011-11-07 2013-05-08 Robert Bosch Gmbh Gesteinsmeißel und Verfahren zur Herstellung eines Gesteinsmeißels

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3200888A1 (de) * 1982-01-14 1983-07-21 Ingo 4600 Dortmund Stibane Vorrichtung zum nageln gebraecher gebirgsschichten
DE3400182A1 (de) * 1984-01-04 1985-07-11 Friedr. Ischebeck GmbH, 5828 Ennepetal Injektionsanker
DE3724165A1 (de) * 1986-09-10 1988-03-24 Gd Anker Gmbh & Co Kg Gebirgsanker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023285831A1 (en) * 2021-07-16 2023-01-19 Hypertunnel Ip Limited Integrated drilling injection and extraction device and method

Also Published As

Publication number Publication date
EP0329835A2 (de) 1989-08-30
EP0329835A3 (de) 1991-03-06
DE3806128C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-06-07
ATE84851T1 (de) 1993-02-15
DE3806128A1 (de) 1989-09-07
DE3877740D1 (de) 1993-03-04
ES2038275T3 (es) 1993-07-16
GR3006917T3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-06-30

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