EP0793763A1 - Kupplung für ankerstangen - Google Patents
Kupplung für ankerstangenInfo
- Publication number
- EP0793763A1 EP0793763A1 EP95900550A EP95900550A EP0793763A1 EP 0793763 A1 EP0793763 A1 EP 0793763A1 EP 95900550 A EP95900550 A EP 95900550A EP 95900550 A EP95900550 A EP 95900550A EP 0793763 A1 EP0793763 A1 EP 0793763A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coupling
- coupling sleeve
- 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.)
- Granted
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 62
- 238000010168 coupling process Methods 0.000 title claims abstract description 62
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 62
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims 2
- 238000005553 drilling Methods 0.000 abstract description 12
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 239000011324 bead Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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 of (in ection) drill anchors with a coupling sleeve which has an internal thread, into which the ends of anchor rods, which have an external thread, are screwed, and with their mutually facing end faces lie against one another over their entire surface.
- the two boring bars or rock bolt parts to be connected to one another have an external thread and are connected to one another with a coupling or connecting sleeve having a corresponding internal thread.
- the threads are usually round threads and are produced by chipless shaping of a tubular base body, the internal thread of the sleeve being produced by a free deformation of the inside of the base body of the sleeve corresponding to the external deformation.
- EP-A-391 119 discloses a connecting element for a screw connection of self-drilling injection anchors, in which the internal thread of the coupling sleeve has two cylindrical parts located at the ends and two conically tapering base areas located approximately in the middle of the sleeve which the internal thread continues.
- This embodiment is disadvantageous because the anchor rods, if they are screwed into the coupling sleeve, do not lie directly against one another and therefore can only transmit the forces occurring during drilling with difficulty.
- the invention has for its object to provide, starting from US-PS-3 567 254, a coupling for anchor rods, in particular for anchor rods of injection drill anchors, which is easy to manufacture and which has a strength so that it can safely transmit the forces occurring during drilling , even if the injection drill anchors, as is often the case, are several 10 m long.
- this object is achieved in that, in order to limit the depth of screwing of the anchor rods into the coupling sleeve, two threaded sections are provided in the coupling sleeve, which are arranged offset from one another by a fraction of a thread in the interior of the coupling sleeve.
- the anchor rods can rest directly on one another with their end faces, so that there is a favorable transmission of the forces from one anchor rod to the next without transmission losses. Nevertheless, complex measures, such as welding known stop rings into the interior of the sleeves, are also no longer necessary.
- there is therefore a specific component that limits the screw-in depth such as, for example, the annular bead provided in US Pat. No. 3,567,254 not necessary, since the offset of the threads of the two threaded sections of the coupling sleeve according to the invention limits the screw-in depth of the anchor rods.
- the offset of the two threaded sections is half a thread. In most cases, this comparatively small offset of the threaded sections is sufficient.
- the offset of the two threaded sections is arranged in the middle of the coupling sleeve.
- the ends of the anchor rods are conical by a chamfer, the conical surface extending from the outside of the anchor rods to their end surface. It is preferred if only one of the two anchor rods screwed into the coupling sleeve rests with its conical surface on the end of one of the two threaded sections.
- the coupling sleeve of the coupling according to the invention is easy to manufacture if the coupling sleeve is a cast part, in particular a steel cast part.
- FIG. 2 shows the sleeve used in the coupling of FIG. 1,
- Fig. 3 shows a detail A of the sleeve of Fig. 2 and
- FIG. 4 shows a detail B of the sleeve from FIG. 2.
- the embodiment of a coupling shown in Fig. 1 consists of a coupling sleeve 1, in which two anchor rods 2 are screwed for injection drill anchors.
- the anchor rods 2 for injection drill anchors are a self-drilling anchor system, the anchor rod of which serves as a drill rod during the drilling process. Anchors of almost any length can be produced by the connections according to the invention.
- the anchor rods 2 of the injection drill anchors are hollow on the inside, with flushing agent being passed through the cavity 3 during the drilling process and the cavity 3 serving as an injection channel for the anchor mortar when the injection drill anchor is set.
- the anchor rods 2 are high-quality tubes with a continuous, cold-rolled drill rod thread 4.
- the coupling sleeve 1 has a corresponding internal thread 5, so that the ends of the anchor rods 2 can be screwed into the coupling sleeve 1.
- the internal thread 5 of the coupling sleeve 1 is interrupted approximately in the middle thereof, i.e. Half a thread is missing, for example, so that two threaded sections 5 'and 5 "are formed and the screw-in depth of the anchor rod 2 shown for example in FIG.
- the coupling sleeve 1 is either a rolled tube or, in the exemplary embodiment shown, a sleeve made of high-quality precision cast steel, it being possible for the free ends of the coupling sleeve 1 to be designed as shown in FIG. 3.
- the end faces 9 of the end face 9 become full-surface Anchor rods 2 lying against one another prevent the sleeve 1 from rotating relative to the anchor rods 2 during drilling and thus loosening the screw connection between the two anchor rods 2.
- the invention can be represented as follows, for example:
- anchor rods 2 of injection drill anchors these are screwed with their external threads 4 into a coupling sleeve 1 having a corresponding internal thread 5.
- One of the two anchor rods 2 screwed into the coupling sleeve 1 rests with a chamfer surface 8 formed by a chamfer at its end on an interruption 6 in the coupling sleeve 1 of the internal thread 5 of the coupling sleeve 1.
- the second anchor rod 2 is screwed so far into the coupling sleeve 1 that its end face 9 abuts the end face 9 of the other anchor rod 2 over the entire surface. This ensures a favorable transmission of forces during drilling and the coupling sleeve 1 cannot twist during drilling.
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)
Description
Claims
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 true EP0793763A1 (de) | 1997-09-10 |
EP0793763B1 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 (de) |
EP (1) | EP0793763B1 (de) |
KR (1) | KR100315997B1 (de) |
AT (1) | ATE197488T1 (de) |
AU (1) | AU690936B2 (de) |
CA (1) | CA2204544C (de) |
DE (1) | DE59409583D1 (de) |
ES (1) | ES2152376T3 (de) |
GR (1) | GR3034800T3 (de) |
WO (1) | WO1996017153A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ302129B6 (cs) * | 2001-07-19 | 2010-11-03 | Atlas Copco Mai Gmbh | Spoj kotevní tyce s vrtným strojem |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29614490U1 (de) * | 1996-08-21 | 1996-11-21 | Röhrenwerk Kupferdreh Carl Hamm GmbH, 45257 Essen | Sondiervorrichtung, insbesondere zur Baugrund- und Altlastenerkundung |
DE20001930U1 (de) * | 2000-02-05 | 2000-09-07 | JORA-TEC GmbH Berg-, Tunnelbau und Felstechnik, 47441 Moers | Injektionsanker |
AU2003220700B2 (en) * | 2002-02-25 | 2007-09-06 | Steffen, Robertson & Kirsten (South Africa) (Pty) Ltd And William David Ortlepp | Rock bolt |
EP1525420B1 (de) * | 2002-08-01 | 2005-11-16 | Atlas Copco Mai GmbH | Kupplung von bohrankern |
US8375651B2 (en) | 2010-07-13 | 2013-02-19 | Atc Ip Llc | Modular guy anchor |
RU2539457C1 (ru) * | 2010-11-04 | 2015-01-20 | Рок Ко., Лтд. | Муфта для соединения арматурных стержней |
US20130174399A1 (en) * | 2012-01-09 | 2013-07-11 | Bernie Goldfuss | Removable Forming Support |
Family Cites Families (18)
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 (de) * | 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 |
GB1546254A (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 |
-
1994
- 1994-11-25 WO PCT/AT1994/000177 patent/WO1996017153A1/de active IP Right Grant
- 1994-11-25 ES ES95900550T patent/ES2152376T3/es not_active Expired - Lifetime
- 1994-11-25 KR KR1019970703487A patent/KR100315997B1/ko not_active IP Right Cessation
- 1994-11-25 AU AU81343/94A patent/AU690936B2/en not_active Ceased
- 1994-11-25 US US08/836,383 patent/US5888025A/en not_active Expired - Lifetime
- 1994-11-25 CA CA002204544A patent/CA2204544C/en not_active Expired - Fee Related
- 1994-11-25 EP EP95900550A patent/EP0793763B1/de not_active Expired - Lifetime
- 1994-11-25 AT AT95900550T patent/ATE197488T1/de not_active IP Right Cessation
- 1994-11-25 DE DE59409583T patent/DE59409583D1/de not_active Expired - Lifetime
-
2000
- 2000-11-09 GR GR20000402479T patent/GR3034800T3/el unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9617153A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ302129B6 (cs) * | 2001-07-19 | 2010-11-03 | Atlas Copco Mai Gmbh | Spoj kotevní tyce s vrtným strojem |
Also Published As
Publication number | Publication date |
---|---|
EP0793763B1 (de) | 2000-11-08 |
DE59409583D1 (de) | 2000-12-14 |
KR100315997B1 (ko) | 2002-04-06 |
CA2204544A1 (en) | 1996-06-06 |
WO1996017153A1 (de) | 1996-06-06 |
GR3034800T3 (en) | 2001-02-28 |
AU8134394A (en) | 1996-06-19 |
CA2204544C (en) | 2005-01-11 |
US5888025A (en) | 1999-03-30 |
KR980700499A (ko) | 1998-03-30 |
ATE197488T1 (de) | 2000-11-11 |
AU690936B2 (en) | 1998-05-07 |
ES2152376T3 (es) | 2001-02-01 |
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