EP2453103A2 - Composant d'ancrage ainsi que procédé destiné à la fabrication d'un composant d'ancrage - Google Patents

Composant d'ancrage ainsi que procédé destiné à la fabrication d'un composant d'ancrage Download PDF

Info

Publication number
EP2453103A2
EP2453103A2 EP11185016A EP11185016A EP2453103A2 EP 2453103 A2 EP2453103 A2 EP 2453103A2 EP 11185016 A EP11185016 A EP 11185016A EP 11185016 A EP11185016 A EP 11185016A EP 2453103 A2 EP2453103 A2 EP 2453103A2
Authority
EP
European Patent Office
Prior art keywords
functional part
anchor rod
thread
armature assembly
anchor
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.)
Withdrawn
Application number
EP11185016A
Other languages
German (de)
English (en)
Inventor
Richard Podesser
Lothar Schwalbach
Wolfgang Stefanelli
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.)
Hilti AG
Original Assignee
Hilti 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 Hilti AG filed Critical Hilti AG
Publication of EP2453103A2 publication Critical patent/EP2453103A2/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • E21D21/0046—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts formed by a plurality of elements arranged longitudinally
    • 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

Definitions

  • the invention relates to an armature assembly, in particular for mining and tunneling, as well as a method for their production, wherein the armature assembly comprises an anchor rod made of plastic and at least one functional part.
  • anchor assemblies for rock stabilization especially for the attachment of tunnel walls in mining and tunnel walls in the transport infrastructure have long been known.
  • anchor assemblies for rock stabilization, especially for the attachment of tunnel walls in mining and tunnel walls in the transport infrastructure have long been known.
  • the anchor assembly comprises at least one functional part, for example a clamping nut, which is turned on when the anchor is placed on the anchor rod.
  • anchor assemblies with a plastic anchor rod have recently come onto the market, these plastic tie rods often being fiber-reinforced to improve their mechanical properties.
  • plastic tie rods often being fiber-reinforced to improve their mechanical properties.
  • GFK anchors that is to say anchor assemblies with an anchor rod made of glass fiber reinforced plastic.
  • the anchor rods made of plastic are hardly stretchable due to their high modulus of elasticity and have only a low compressive and shear strength. Due to the low extensibility, the anchors are set relatively tight to prevent any movement of the ground and to reduce the shear forces per anchor occurring. As a result of the low compressive and shear strength, a considerable proportion of the conventional GRP anchors are already damaged or destroyed by the pressure and shear forces occurring during the installation.
  • the known GRP anchor rods have at one axial end a functional part, for example a clamping nut or (in the case of self-drilling anchor assemblies) a drive nut, with the aid of which the armature assembly is installed.
  • These Nuts can be made of steel or plastic and are screwed onto a thread pre-fabricated on the anchor rod. However, these screw connections are not able to absorb high torques or tensile forces.
  • fiberglass anchors can absorb very high tensile forces and are therefore ideal for anchoring back tunnel or tunnel walls.
  • the low compressive and shear strength of the plastic anchor rods proves to be advantageous.
  • the anchor rods for rock protection of the original tunnel or tunnel then stuck in the stone to be removed and can be relatively easily destroyed in the cross-sectional widening due to their low shear strength through tunnel boring or roughing machines, without damaging the machines themselves.
  • the object of the invention is to provide an armature assembly that is easy to manufacture and has a robust connection between its anchor rod made of plastic and the functional part, which can absorb high tensile forces and torques.
  • the cutting or Einurchen a thread with quite little effort is possible.
  • the thread on the anchor rod is only made directly when connecting the functional part with the anchor rod and therefore can not be damaged before.
  • the thread on the tie rod between the anchor rod and the functional part is a very precisely fitting connection that can transmit relatively high tensile forces and torques.
  • the anchor rod is preferably made of a fiber-reinforced plastic, in particular a glass fiber reinforced plastic. Such a fiber reinforcement of the plastic anchor rod has proven to be extremely advantageous in view of the mechanical anchor properties.
  • the anchor rod is hollow, at least in the region of the fastening portion, so that optionally an internal thread and / or an external thread can be cut or scooped in this region.
  • the cutting thread has a constant flank angle ⁇ of 10 ° ⁇ ⁇ ⁇ 40 °, in particular of 20 ° ⁇ ⁇ ⁇ 30 °. This very small thread angle ⁇ of the cutting thread facilitates the cutting or unraveling of the thread in the connecting portion of the anchor rod.
  • the anchor rod and the functional part preferably engage in one another in a form-fitting manner and form a cavity in the region of the second flank angle ⁇ 2 .
  • the connecting portion not only has individual conical or circular cylindrical surface segments, but is designed to be a total of conical or circular cylindrical, a helical cavity is concretely formed between the anchor rod and the functional part.
  • the functional part in the region of the cavity has an opening for filling the cavity with adhesive. After curing of the filled in the cavity adhesive, the anchor rod and the functional part are glued together, whereby the screw between anchor rod and functional part is reinforced, in particular with respect to the torque transmission.
  • the drive element may be a particular sleeve-shaped nut, which is bolted to an axial stop with the anchor rod and secured by the cutting thread to him.
  • the transferable forces and moments can be easily adjusted via the pitch and height of the internal thread.
  • the thread of the armature bar (usually made as an external thread) is not cut or caught until immediately after the tie rod and the functional part have been connected.
  • damage to the anchor rod thread is excluded prior to attachment of the functional part to the anchor rod, whereby the rejection decreases noticeably in the manufacture of the anchor assemblies.
  • the drive element 29 is a sleeve-shaped nut which is bolted to an axial stop 34 with the anchor rod 12 and secured by the cutting thread 22 to him.
  • the connecting portion 16 of the drill bit 32 is a threaded rod which is screwed into contact with an end wall 38 of the anchor rod 12 until it contacts an axial stop 36 of the drill bit 32 and is fastened to it by the cutting thread 24.
  • a thread depth t In a thread detail A of the FIG. 5 is a thread depth t, a thread pitch h and a flank angle ⁇ drawn.
  • the thread depth t which is preferably in the order of 0.5 mm to 1.5 mm, more preferably about 1 mm
  • the thread pitch h which is preferably in the order of about 5 mm
  • the transferable forces and Moments between the functional part 18 and the anchor rod 12 are determined.
  • the flank angle ⁇ of the cutting thread 22 is constant and is in a range of 10 ° ⁇ ⁇ ⁇ 40 °, particularly preferably in a range of 20 ° ⁇ ⁇ ⁇ 30 °.
  • a flank angle ⁇ of this order of magnitude it has been found that the thread 26 in the plastic anchor rod 12 can be cut or furrowed well, in particular when the cutting thread 22 is made of metal, preferably of steel.
  • a sealing ring 40 can also be seen, which in the region of the sealing contour 35 axially between the functional part 18 and the end wall 38 of the anchor rod 12 is arranged to seal between the functional part 18 and the anchor rod 12.
  • Such a seal is particularly advantageous in a second embodiment of the functional part 18, which in the FIGS. 7 to 10 is shown. Since the second embodiment of the functional part 18 of the first embodiment is structurally very similar, is in this regard explicitly to the preceding description of FIGS. 2 to 6 referred to and discussed below only differences.
  • FIGS. 7 and 8 show, analogous to the Figures 2 and 5 , A perspective view and a longitudinal section through the functional part 18 according to the second embodiment.
  • FIG. 9 shows to illustrate the connection between the anchor rod 12 and the functional part 18 according to the second embodiment, a greatly enlarged detail of this compound in the region of a thread tooth.
  • the cavity 44 after assembly of the functional part 18 on the anchor rod 12 has a spiral or helical shape.
  • This cavity 44 is filled in the second embodiment of the functional part 18 after screwing the functional part 18 on the anchor rod 12 with an adhesive 46 in order to increase the adhesion between the anchor rod 12 and the functional part 18.
  • an adhesive 46 in order to increase the adhesion between the anchor rod 12 and the functional part 18.
  • FIG. 10 shows a side view of the drill bit 32 formed as functional part 20.
  • the drill bit 32 includes a drill portion 50 and a connecting portion 52 for fixing the drill bit 32 on the anchor rod 12, more precisely on the connecting portion 16 of the anchor rod 12 (see. FIGS. 1 and 11 ).

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)
  • Joining Of Building Structures In Genera (AREA)
  • Dowels (AREA)
EP11185016A 2010-11-11 2011-10-13 Composant d'ancrage ainsi que procédé destiné à la fabrication d'un composant d'ancrage Withdrawn EP2453103A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010043765.4A DE102010043765B4 (de) 2010-11-11 2010-11-11 Ankerbaugruppe sowie Verfahren zur Herstellung einer Ankerbaugruppe

Publications (1)

Publication Number Publication Date
EP2453103A2 true EP2453103A2 (fr) 2012-05-16

Family

ID=45047565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11185016A Withdrawn EP2453103A2 (fr) 2010-11-11 2011-10-13 Composant d'ancrage ainsi que procédé destiné à la fabrication d'un composant d'ancrage

Country Status (5)

Country Link
US (1) US20120155969A1 (fr)
EP (1) EP2453103A2 (fr)
AU (1) AU2011250702A1 (fr)
DE (1) DE102010043765B4 (fr)
ZA (1) ZA201108269B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11549538B2 (en) * 2018-04-12 2023-01-10 Stephen M. Hill Pressure lock retention fastener
CN110485932A (zh) * 2019-08-30 2019-11-22 中国建筑西南勘察设计研究院有限公司 一种用于施工锚杆的钻头
CN110486067B (zh) * 2019-09-09 2024-07-02 中交路桥建设有限公司 一种瓦斯隧道系统锚杆及锚杆检测的安全施工方法
CN111608211B (zh) * 2020-06-11 2021-07-02 湖北鄂东桩基工程有限公司 锚杆及其安装方法

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3244055A (en) * 1964-03-26 1966-04-05 Schuermann Fritz Detachable anchor bolts
USRE28907E (en) * 1967-06-05 1976-07-20 Self-tapping threaded bushings
US5433558A (en) * 1990-10-29 1995-07-18 Bhp Engineering Pty Ltd Self-tapping, and self-tapping and self-drilling, rock bolts
US5443331A (en) * 1993-08-16 1995-08-22 Seegmiller; Ben L. Threaded bar construction
US5653563A (en) * 1995-10-26 1997-08-05 Illinois Tool Works Inc. Anchor
US5775849A (en) * 1996-04-25 1998-07-07 Sorkin; Felix L. Coupler for ducts used in post-tension rock anchorage systems
CA2336289C (fr) * 2000-03-02 2005-12-27 Jennmar Corporation Ecrou a bride ameliore
DE10046804A1 (de) * 2000-09-18 2002-04-04 Erich Borgmeier Kombinierte Meißel- und Mischspitze für Fels- / Gebirgsanker
DE10064714A1 (de) * 2000-12-22 2002-07-04 Hilti Ag Selbstfurchende Schraube
US6742966B2 (en) * 2001-01-12 2004-06-01 James D. Cook Expansion shell assembly
US20060207204A1 (en) * 2005-03-18 2006-09-21 Bfs Diversified Products, Llc Fastener, roofing system and method
BRPI0618483A2 (pt) * 2005-11-09 2011-08-30 Sandvik Intellectual Property parafuso auto-perfurador para rocha
DE102006025248A1 (de) * 2006-05-29 2007-12-06 Beltec Industrietechnik Gmbh Faserverstärkter Kunststoff-Bohranker
CN101109276B (zh) * 2006-07-20 2013-03-06 简恩马股份有限公司 岩石锚杆
AU2007214341B8 (en) * 2007-08-31 2015-02-19 Sandvik Intellectual Property Ab Rock Bolt
AU2008207662B2 (en) * 2007-09-04 2015-02-05 Fci Holdings Delaware, Inc. End coupling for a rock bolt
DE102008014700A1 (de) * 2008-03-18 2009-09-24 Dywidag-Systems International Gmbh Korrosionsgeschützter Selbstbohranker sowie Verfahren zu dessen Herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
ZA201108269B (en) 2013-08-28
DE102010043765B4 (de) 2014-08-28
AU2011250702A1 (en) 2012-05-31
DE102010043765A1 (de) 2012-05-16
US20120155969A1 (en) 2012-06-21

Similar Documents

Publication Publication Date Title
DE102010043769B4 (de) Ankerbaugruppe, insbesondere für den Berg- und Tunnelbau
EP2257714B1 (fr) Vis taraudeuse
EP2257690B1 (fr) Cheville autoforeuse protégée contre la corrosion, et bloc d'éléments de cheville, et leur procédé de fabrication
DE102013109987B4 (de) Wendel für einen Gewindeeinsatz
EP3559484B1 (fr) Système d'assemblage ou de blindage de composants
DE102013002734B4 (de) Ankerkopf für einen Zuganker und Ankermutter für einen Ankerkopf eines Zugankers
AT13162U1 (de) Verfahren zum Bohren von Löchern in Boden- bzw. Gesteinsmaterial und zum Festlegen eines Ankers in einem Bohrloch sowie Vorrichtung hierfür
DE102010043765B4 (de) Ankerbaugruppe sowie Verfahren zur Herstellung einer Ankerbaugruppe
CH702595B1 (de) Bohrankerdichtung und Selbstbohranker mit einer solchen Bohrankerdichtung.
DE202008003381U1 (de) Ankermutter für ein Zugglied sowie Anker
DE3320460C1 (de) Nachgiebiger Gebirgsanker
DE102014004087B3 (de) Selbstbohrende Injektionslanze und Verfahren zur Erdreichstabilisierung unter Verwendung derselben
DE3910627A1 (de) Verbindungselement
DE10311471A1 (de) Gewindeformende Schraube für Untergründe aus harten Vollbaustoffen
EP1533471B1 (fr) Boulon d'ancrage déformable
EP2295719A2 (fr) Elément de fixation et procédé destiné à la fabrication d'un élément de fixation
EP3808934B1 (fr) Ancre de précontrainte permettant de sécuriser une formation géologique
DE102006039195A1 (de) Bolzenanker mit Spreizhülse
EP0697530B1 (fr) Boulon d'ancrage pour béton ou similaire
DE4438997A1 (de) Gebirgsanker
AT505335B1 (de) Vorrichtung zum herstellen eines bohrloches in gesteinsmaterial
DE102006025268A1 (de) Spreizanker
EP4212743A1 (fr) Élément d'ancrage destiné à être ancré dans un puits de forage, ensemble d'ancrage comprenant un tel élément d'ancrage et procédé de fabrication d'un tel ensemble d'ancrage
EP4212744A1 (fr) Unité d'ancrage pour ancrage dans un puits de forage dans un matériau, ensemble d'ancrage comprenant une telle unité d'ancrage et procédé de fabrication d'un tel ensemble d'ancrage
EP3094787A1 (fr) Dispositif d'ancrage au sol

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140501