EP0793763B1 - Kupplung für ankerstangen - Google Patents

Kupplung für ankerstangen Download PDF

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Publication number
EP0793763B1
EP0793763B1 EP95900550A EP95900550A EP0793763B1 EP 0793763 B1 EP0793763 B1 EP 0793763B1 EP 95900550 A EP95900550 A EP 95900550A EP 95900550 A EP95900550 A EP 95900550A EP 0793763 B1 EP0793763 B1 EP 0793763B1
Authority
EP
European Patent Office
Prior art keywords
coupling sleeve
coupling
anchor rods
anchor
screwed
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
EP95900550A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0793763A1 (de
Inventor
Herbert Jun Papousek
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.)
Atlas Copco Mai GmbH
Original Assignee
Mai Pump Austria 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 Mai Pump Austria GmbH filed Critical Mai Pump Austria GmbH
Publication of EP0793763A1 publication Critical patent/EP0793763A1/de
Application granted granted Critical
Publication of EP0793763B1 publication Critical patent/EP0793763B1/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
    • 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
    • E21B17/042—Threaded
    • 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
    • E21B17/042—Threaded
    • E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/57—Distinct end coupler
    • Y10T403/5746—Continuous thread

Definitions

  • the invention relates to a coupling for anchor rods from (Injection) drill anchors with a coupling sleeve, in which the ends of anchor rods that have an external thread, are screwed in, and with their mutually facing end faces rest against each other over the entire surface, whereby for limitation the screwing depth of the anchor rods into the coupling sleeve in of these two threaded sections are provided inside the coupling sleeve by a fraction of a thread are arranged offset to each other.
  • EP-A-391 119 is a connecting element for a Known screw connection of self-drilling injection anchors, in which the internal thread of the coupling sleeve two cylindrical parts at the ends and two approximately in the Tapered base areas in the middle of the sleeve on which the internal thread continues.
  • This Embodiment is disadvantageous because the anchor rods, if they are screwed into the coupling sleeve, not immediately abut each other and therefore those that occur during drilling It is difficult to transfer forces.
  • EP 187 628 A shows the measure, at the free end of boring bars, which carry a threaded section at their end area, to provide a chamfer (conical surface). These shaped surfaces both EP 187 628 are not at the end of one of the two threaded sections, so that there is an undefined Condition results.
  • the invention is based, based on the task DE-A 14 83 840 a coupling for anchor rods, in particular to be provided for anchor rods of injection drill anchors that is easy to manufacture and has strength, so that they safely transmit the forces occurring during drilling can, even if the injection drill anchors, as is often the case, are several 10 m long.
  • this object is achieved in that the Ends of the anchor rod chamfers are provided, each chamfer surface from the outside of the anchor rods to their end face enough and that only one of the two in the Coupling sleeve screwed anchor rods with their chamfer surface at the end of one of the two threaded sections Coupling sleeve is present.
  • the anchor rods can by the coupling according to the invention with their end faces directly against one another, so that a favorable transfer of forces from an anchor rod to the next without transmission losses. Nevertheless are complex measures, such as welding of known stop rings in the interior of the sleeves, not more needed.
  • Coupling for anchor rods is a concrete component that the screw depth is limited, such as that in the US-PS 3 567 254 provided annular bead, as in DE-A 14 83 840, unnecessary, because the offset of the threads of the two threaded sections of the coupling sleeve according to the invention the screw-in depth of the anchor rods is limited.
  • the offset of the two thread sections is half a thread. In the In most cases this comparatively small offset is sufficient of the threaded sections.
  • the manufacture of the coupling sleeve of the coupling according to the invention is easy if the coupling sleeve is a casting, in particular is a cast steel part.
  • the embodiment of a clutch shown in Fig. 1 exists from a coupling sleeve 1, in the two anchor rods 2 for Injection drill anchors are screwed in.
  • the anchor rods 2 for Injection drill anchors are a self-drilling anchor system, the anchor rod during the drilling process as a boring bar serves.
  • the connections according to the invention can anchor can be made of almost any length.
  • the anchor rods 2 of the injection drill anchors are hollow on the inside Cavity 3 detergent is passed during the drilling process and the cavity 3 when setting the injection drill anchor as Injection channel for the anchor mortar is used.
  • the anchor rods 2 are high quality tubes with a continuous, cold rolled boring thread 4.
  • the coupling sleeve 1 has a corresponding internal thread 5, so that the ends of the Anchor rods 2 are screwed into the coupling sleeve 1 can.
  • this is Internal thread 5 of the coupling sleeve 1 approximately in the middle of the same interrupted, i.e. for example, half is missing Thread so that two threaded sections 5 'and 5' 'are created and the screw-in depth of the top, for example, in FIG. 1 anchor rod 2 shown is limited because the anchor rod 2 only up to the interruption 6 of the internal thread 5 of the coupling sleeve 1 can be screwed into this.
  • the anchor rod 2 is in contact with one provided at the end, conical chamfer surface 8 at the interruption 6 of the internal thread 5 of the coupling sleeve 1.
  • the second anchor rod 2 shown in Fig. 1 below is so far in the coupling sleeve 1 screwed in until its end face 9 the end face 9 of the anchor rod 2 screwed in first.
  • the coupling sleeve 1 is either a rolled tube or in Embodiment shown a sleeve made of high quality Cast precision steel, with the free ends of the coupling sleeve 1 can be designed as shown in Fig. 3.
  • the invention can be as follows, for example being represented:
  • anchor rods 2 of injection drill anchors are these with their external threads 4 in a corresponding Internal thread 5 having coupling sleeve 1 screwed in.
  • Anchor rods 2 abut with a bevel bevel surface 8 formed at one end in the coupling sleeve 1 Interruption 6 of the internal thread 5 of the coupling sleeve 1 on.
  • the second anchor rod 2 is so far in the coupling sleeve 1 screwed in that its face 9 on the End face 9 of the other anchor rod 2 is in full contact. This ensures a favorable transfer of forces when drilling and the coupling sleeve 1 can become when drilling do not twist.

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)
  • Joining Of Building Structures In Genera (AREA)
  • Piles And Underground Anchors (AREA)
EP95900550A 1994-11-25 1994-11-25 Kupplung für ankerstangen Expired - Lifetime EP0793763B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/AT1994/000177 WO1996017153A1 (de) 1994-11-25 1994-11-25 Kupplung für ankerstangen

Publications (2)

Publication Number Publication Date
EP0793763A1 EP0793763A1 (de) 1997-09-10
EP0793763B1 true EP0793763B1 (de) 2000-11-08

Family

ID=3683308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95900550A Expired - Lifetime EP0793763B1 (de) 1994-11-25 1994-11-25 Kupplung für ankerstangen

Country Status (10)

Country Link
US (1) US5888025A (el)
EP (1) EP0793763B1 (el)
KR (1) KR100315997B1 (el)
AT (1) ATE197488T1 (el)
AU (1) AU690936B2 (el)
CA (1) CA2204544C (el)
DE (1) DE59409583D1 (el)
ES (1) ES2152376T3 (el)
GR (1) GR3034800T3 (el)
WO (1) WO1996017153A1 (el)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29614490U1 (de) * 1996-08-21 1996-11-21 Roehrenwerk Kupferdreh Carl Ha Sondiervorrichtung, insbesondere zur Baugrund- und Altlastenerkundung
DE20001930U1 (de) * 2000-02-05 2000-09-07 Jora Tec Gmbh Berg Tunnelbau U Injektionsanker
WO2003008763A1 (de) * 2001-07-19 2003-01-30 Atlas Copco Mai Gmbh Verbindung einer ankerstange mit einem bohrgerät
CA2477346C (en) * 2002-02-25 2010-06-01 Steffen, Robertson & Kirsten (South Africa) (Pty) Ltd Rock bolt
ATE310196T1 (de) * 2002-08-01 2005-12-15 Atlas Copco Mai Gmbh Kupplung von bohrankern
US8375651B2 (en) 2010-07-13 2013-02-19 Atc Ip Llc Modular guy anchor
AU2011324256B2 (en) * 2010-11-04 2015-10-01 Roc Co., Ltd. Reinforcement bar coupler
US20130174399A1 (en) * 2012-01-09 2013-07-11 Bernie Goldfuss Removable Forming Support

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US49386A (en) * 1865-08-15 Coupling for drill or pump rods
US1642183A (en) * 1925-04-23 1927-09-13 Fred W Thurston Mining drill
AT220568B (de) * 1958-12-30 1962-04-10 Boehler & Co Ag Geb Gewindeverbindung zur Kraftübertragung vom Preßluftgerät zum Preßluftwerkzeug
US3306051A (en) * 1964-02-10 1967-02-28 Howlett Machine Works Rock bolt
SE318830B (el) * 1964-11-11 1969-12-15 Sandvikens Jernverks Ab
US3336758A (en) * 1965-01-11 1967-08-22 Chester I Williams Rock bolt assembly and procedure for two-stage grouting operations
DE1483840C3 (de) * 1965-05-12 1975-08-14 Ingersoll-Rand Co., New York, N.Y. (V.StA.) Gesteinsbohrstange
US3424479A (en) * 1966-01-11 1969-01-28 Ingersoll Rand Co Coupling and rod system for rock drills
US3567254A (en) * 1968-12-03 1971-03-02 Toimi A Parssinen Drill steel
SE401232B (sv) * 1970-05-04 1978-04-24 Sandvik Ab Gengad forbindning for slagborrstenger
US4040756A (en) * 1976-03-05 1977-08-09 Trw Canada Limited Drill rod thread form
GB1546253A (en) * 1977-12-19 1979-05-23 British Steel Corp Reinforcing bar joints
US4143986A (en) * 1978-01-09 1979-03-13 Antosh Leon A Rebar splice
SE459681B (sv) * 1985-01-07 1989-07-24 Santrade Ltd Borrelement foer slagborrning
SE469602B (sv) * 1985-04-04 1993-08-02 Sandvik Ab Skarvgaenga foer slagborrning
DE3700758A1 (de) * 1987-01-13 1988-07-21 Gd Anker Gmbh & Co Kg Verfahren zur formung eines gewindes und rohrkoerper mit gewinde
DE3910627A1 (de) * 1989-04-01 1990-10-04 Ischebeck Friedrich Gmbh Verbindungselement
US5031370A (en) * 1990-06-11 1991-07-16 Foresight Industries, Inc. Coupled drive rods for installing ground anchors

Also Published As

Publication number Publication date
US5888025A (en) 1999-03-30
EP0793763A1 (de) 1997-09-10
AU690936B2 (en) 1998-05-07
ES2152376T3 (es) 2001-02-01
WO1996017153A1 (de) 1996-06-06
KR100315997B1 (ko) 2002-04-06
ATE197488T1 (de) 2000-11-11
GR3034800T3 (en) 2001-02-28
CA2204544C (en) 2005-01-11
AU8134394A (en) 1996-06-19
DE59409583D1 (de) 2000-12-14
KR980700499A (ko) 1998-03-30
CA2204544A1 (en) 1996-06-06

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