EP0800615B1 - Tige de boulon d'ancrage destinee a un boulon d'ancrage d'injection et de percage - Google Patents

Tige de boulon d'ancrage destinee a un boulon d'ancrage d'injection et de percage Download PDF

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Publication number
EP0800615B1
EP0800615B1 EP96900026A EP96900026A EP0800615B1 EP 0800615 B1 EP0800615 B1 EP 0800615B1 EP 96900026 A EP96900026 A EP 96900026A EP 96900026 A EP96900026 A EP 96900026A EP 0800615 B1 EP0800615 B1 EP 0800615B1
Authority
EP
European Patent Office
Prior art keywords
thread
anchoring rod
rod according
drilling
rod
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
EP96900026A
Other languages
German (de)
English (en)
Other versions
EP0800615A1 (fr
Inventor
Johann Helbling
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.)
H Weidmann AG
Original Assignee
H Weidmann 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 H Weidmann AG filed Critical H Weidmann AG
Publication of EP0800615A1 publication Critical patent/EP0800615A1/fr
Application granted granted Critical
Publication of EP0800615B1 publication Critical patent/EP0800615B1/fr
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
    • 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
    • E21D21/0006—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material
    • 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
    • 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
    • E21D21/006—Anchoring-bolts made of cables or wires

Definitions

  • anchors for securing walls, the roof or the tunnel face used.
  • an impact or rotary drill with a drill pipe first Drilled holes and then set the anchors, which for example, can be designed as adhesive anchors.
  • drilling injection anchors are suggested (e.g. EP-B-355 379). They consist of one Steel pipe that carries a drill bit at the front and with the back at the Drill can be connected. After drilling, the Drill uncoupled and injection material through the pipe pressed in. Then the protruding pipe end screwed a clamping nut, which against a pressure plate presses the tunnel wall.
  • a disadvantage of this Bohr injection anchor is their susceptibility to corrosion, and if the cavity protection should only work temporarily, e.g. on a tunnel face or in coal mining, so the secured wall has to be dismantled later, prepare the massive steel tubes of these injection anchors at later dismantling difficulties.
  • the present invention has for its object the above Fix disadvantages. This task is accomplished through the combination of features of claims solved.
  • Anchor rods made of fiber-reinforced plastic are known per se (e.g. US-A-4 664 573 and EP-A-94 908). These well-known anchor rods have unidirectionally oriented fibers in the longitudinal direction and therefore only have a low torsional strength. As They are therefore not suitable for drilling injection anchors.
  • the pipe and the also has helically wound fibers the torsional strength of the pipe compared to known plastic anchor rods much bigger. Therefore, they can Drilling required torques transmitted via the anchor rod will. Surprisingly, it has been shown that the fiber-reinforced Plastic rod also the blows of the impact drill transferred to the drill bit with only minor losses. So far, this was not considered possible because of the professional world assumed that the plastic dampened the blows too much.
  • the anchor rod according to the invention is corrosion-resistant and machinable, so that as a drilling injection anchor for permanent and temporary attachment can be used easily. At the later dismantling of a fixed wall, it is easily cut.
  • the anchor rod according to the invention has the same tensile strength also significantly lighter than the well-known steel injection anchors. This makes handling, storage and transportation made easier.
  • an anchor tube 1 is composed of a Tubular body 2 and an external round thread 3 molded therein with thread root 4 round in axial section and thread comb 5 shown.
  • the tubular body 2 consists of a fiber-reinforced Thermoset. It has both longitudinal fibers 6 and helical wound fibers 7, the opposite sense of slope is to the pitch of the thread 3. This is the Tubular body 2 through the fibers 7 when transmitting an im attractive sense of the thread 3 acting torque radially compressed. This also increases the strength of the rod on torsion and pressure.
  • the fibers 7 are preferably predominant arranged in the outer region of the tube 1.
  • the thread 3 is in the embodiment of Figure 1 in the tubular body by pressing using a molded body before the finished curing of the thermoset of the tubular body 2, which from the thread base 4 material displaced the mold cavity for fills the thread comb. This ensures optimal strength of the thread.
  • the molded body is one in the circumferential direction multi-part sleeve with centering means and can e.g. out a thermoplastic.
  • the thread 3 however, also be cut into the tubular body 2.
  • the other The end of the anchor tube 1 is identical.
  • Figure 2 shows a variant in which the thread 3 on one the tubular body 2 molded or glued sleeve 8 is.
  • the sleeve 8 can be made of a fiber-reinforced thermoset or consist of a metallic material.
  • Figure 3 shows the structure of an injection drill anchor.
  • a thread 3 of the tube 1 becomes a drill bit 12 with a Internal thread 13 screwed on.
  • the crown 12 lies with one Shoulder 14 on the end face 9 of the tube 1 and has rinsing and injection channels 15 which are connected to the axial bore 10 of the Communicate tube 1.
  • the crown has 12 on the face e.g. chisel-like cutting edges 16.
  • the crown 12 can also be designed differently.
  • On the other thread 3 is a sleeve 17 with a corresponding one Internal thread 18 screwed in half. In the protruding end of the sleeve 13 becomes a threaded pin Screwed in drill.
  • the drilling process can then begin be, through the bore 10 and the channels 15 a Detergent, e.g. Air or water. If the anchor is to be longer than an anchor tube 1, so when reached a predetermined drilling depth of the threaded pin of the drill unscrewed from the sleeve 17, the drill is retracted and a second tube is screwed into the sleeve 17. On their another end 17 is screwed on and the Drilling continued.
  • a Detergent e.g. Air or water.
  • FIG. 4 shows a further embodiment of the thread 3 shown.
  • the tubular body is not yet fully hardened 2 is a sliver with the pitch of the thread on the end 3 wound up so that the bottom of the thread is somewhat constricted becomes.
  • Two half shells 20 are placed on this preformed thread a thin-walled sleeve 21 made of steel pressed radially.
  • the Thread 3 is pressed into the half-shells 20.
  • the two Half shells 20 collide in a common axial plane and grip with several projections 22 and matching incisions 23 into each other along the dividing line.
  • the two half shells 20 are welded along the dividing line at several points, e.g. after the tungsten inert gas process.
  • a sleeve 24 made of steel with a the end face 9 adjacent flange 25 is used.
  • This embodiment has the advantages that the Steel sleeve 21 in the axial direction with the tubular body 2 is connected and the thread 3 considerably less for seizing tends as a thread formed in plastic.
  • the flange 25 serves the purpose.
  • the sleeve 24 supports the tubular body 3 against radial compression. With training after Figure 4 is therefore easier to extend the tube Loosen anchor tube 1 from the threaded pin of the drill.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Piles And Underground Anchors (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Dowels (AREA)

Claims (10)

  1. Barre d'ancrage pour ancre d'injection de forage, se composant d'un tuyau en plastique (1) renforcé de fibres contenant des fibres (6, 7) enroulées non seulement avec orientation longitudinale mais aussi de manière hélicoïdale, et ayant un filetage à ses deux bouts.
  2. Barre d'ancrage selon la revendication 1, en ce que le filetage (3) étant un filetage rond avec, dans la section axiale, une crête (5) de filetage ronde et une base de filetage (4) ronde.
  3. Barre d'ancrage selon la revendication 1 ou 2, en ce que le filetage (3) étant coulé sur le corps du tuyau (2) ou formé ou coupé dans le corps du tuyau (2).
  4. Barre d'ancrage selon la revendication 1 ou 2, en ce que le filetage (3) étant formé dans une douille (8, 21) collée sur le corps (2) du tuyau.
  5. Barre d'ancrage selon la revendication 4, en ce que la douille (21) se compose au moins de deux parties de coquille (20) qui sont pressées radialement sur le corps du tuyau (2).
  6. Barre d'ancrage selon la revendication 5, en ce que les parties de coquille (20) s'engrennent le long des lignes de séparation avec une multitude de saillies (22) et d'entailles (23) correspondantes.
  7. Barre d'ancrage selon la revendication 5 ou 6, en ce que le parties de coquille (20) sont soudées réciproquement à une multitude d'endroits.
  8. Barre d'ancrage selon une des revendications 1 à 7, en ce que les fibres (7) enroulées de manière hélicoïdale ont au moins pour la plupart le sens de montée opposé par rapport à celui des deux filetages (3).
  9. Barre d'ancrage selon une des revendications 1 à 8, en ce que les fibres (7) enroulées de manière hélicoïdales sont pour la plupart situées dans la partie extérieure du tuyau (1).
  10. Barre d'ancrage selon une des revendications 1 à 9, en ce que les deux filetages (3) sont des filetages extérieurs.
EP96900026A 1995-01-06 1996-01-05 Tige de boulon d'ancrage destinee a un boulon d'ancrage d'injection et de percage Expired - Lifetime EP0800615B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH36/95 1995-01-06
CH3695 1995-01-06
PCT/CH1996/000003 WO1996021087A1 (fr) 1995-01-06 1996-01-05 Tige de boulon d'ancrage destinee a un boulon d'ancrage d'injection et de perçage

Publications (2)

Publication Number Publication Date
EP0800615A1 EP0800615A1 (fr) 1997-10-15
EP0800615B1 true EP0800615B1 (fr) 1998-12-02

Family

ID=4177882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96900026A Expired - Lifetime EP0800615B1 (fr) 1995-01-06 1996-01-05 Tige de boulon d'ancrage destinee a un boulon d'ancrage d'injection et de percage

Country Status (6)

Country Link
EP (1) EP0800615B1 (fr)
JP (1) JPH10512025A (fr)
AT (1) ATE174103T1 (fr)
AU (1) AU4296296A (fr)
DE (1) DE59600905D1 (fr)
WO (1) WO1996021087A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004057711B3 (de) * 2004-11-30 2006-09-21 Hilti Ag Ankerelement

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10106695B4 (de) * 2001-02-14 2010-11-25 Friedr. Ischebeck Gmbh Bohrkrone für einen Bohr- oder Injektionsanker
SE0100915L (sv) * 2001-03-15 2002-09-16 Atlas Copco Rock Drills Ab Förfarande vid förstärkning av berg och jordmassor samt bergbult för utövande av förfarandet
DE10219155C1 (de) * 2002-04-29 2003-12-18 Welser Profile Ag Bergbaumetalldübel
WO2005035892A1 (fr) 2003-10-10 2005-04-21 Hitek Construction Ag Dispositif comprenant une barre en plastique renforce par des fibres et servant a transmettre une charge a travers une couche calorifuge
DE102006025248A1 (de) 2006-05-29 2007-12-06 Beltec Industrietechnik Gmbh Faserverstärkter Kunststoff-Bohranker
NO349696B1 (no) * 2021-06-02 2026-04-07 Oldroyd As Stag for forankring av innredning i tunneler og bergrom

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2749068A1 (de) * 1977-11-02 1979-05-03 Gebirgssicherung Gmbh Gebirgsanker
DE3806128A1 (de) * 1988-02-26 1989-09-07 Ischebeck Friedrich Gmbh Bohr-injektionsanker
DE4018703C1 (en) * 1990-06-12 1991-08-01 Johannes Radtke Improved cable anchor - includes several laminations and has fixing at end towards bottom of bore hole
GB2262970B (en) * 1991-12-19 1995-02-15 Bridon Plc Flexible roof bolt
DE4209265A1 (de) * 1991-12-21 1993-06-24 Dyckerhoff & Widmann Ag Vorrichtung zur verankerung eines stabfoermigen zugglieds aus faserverbundwerkstoff
DE4204533C2 (de) * 1992-02-15 1994-03-17 Gd Anker Gmbh & Co Kg Injektionsbohranker
DE9317336U1 (de) * 1993-11-12 1994-01-27 Buddenberg, Heinrich, 47447 Moers Injektionsseilanker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004057711B3 (de) * 2004-11-30 2006-09-21 Hilti Ag Ankerelement

Also Published As

Publication number Publication date
WO1996021087A1 (fr) 1996-07-11
EP0800615A1 (fr) 1997-10-15
ATE174103T1 (de) 1998-12-15
JPH10512025A (ja) 1998-11-17
DE59600905D1 (de) 1999-01-14
AU4296296A (en) 1996-07-24

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