EP2295719A2 - Elément de fixation et procédé destiné à la fabrication d'un élément de fixation - Google Patents

Elément de fixation et procédé destiné à la fabrication d'un élément de fixation Download PDF

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Publication number
EP2295719A2
EP2295719A2 EP20100173070 EP10173070A EP2295719A2 EP 2295719 A2 EP2295719 A2 EP 2295719A2 EP 20100173070 EP20100173070 EP 20100173070 EP 10173070 A EP10173070 A EP 10173070A EP 2295719 A2 EP2295719 A2 EP 2295719A2
Authority
EP
European Patent Office
Prior art keywords
sleeve
base body
connection
fastening element
rolling
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Withdrawn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
EP20100173070
Other languages
German (de)
English (en)
Other versions
EP2295719A3 (fr
Inventor
Frank Schmidt
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 EP2295719A2 publication Critical patent/EP2295719A2/fr
Publication of EP2295719A3 publication Critical patent/EP2295719A3/fr
Withdrawn legal-status Critical Current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
    • E21D21/008—Anchoring or tensioning means
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the invention relates to a fastener, in particular for use in mining and tunneling or for the stabilization of slopes and slopes, referred to in the preamble of claim 1. Art.
  • the invention further relates to a method for producing a fastener, referred to in claim 7 Art.
  • fasteners In mining and tunneling, ceilings and side walls are secured by means of chemically or mechanically anchored fastening elements. Such fasteners are also referred to as rock anchors or rock anchors. These fasteners are also suitable for stabilizing slopes and embankments to z. B. to prevent slippage of material. Such fasteners are referred to, for example, as soil nails.
  • a disadvantage of the known solution is that depending on the type, shape or material of the body, a formation of the connecting portion for a biasing element directly on the body or only with great effort is possible.
  • connection sleeve is glued to a connection portion for the biasing member on the free end of the elongate body.
  • a disadvantage of the known solution is that via an adhesive connection only partially z. B. in underground mining required for securing loads are transferable.
  • the quality of the adhesive bond depends on a large number of conditions which are not always controllable to the desired degree, so that a large safety factor must be taken into account when using the fastening element.
  • these fasteners are usually oversized.
  • Next are to achieve a sufficient assurance compared to conventional fasteners, such as those from the US 2,725,843 are known, a larger number of fasteners required, which significantly increases the cost of the fuse.
  • the object of the invention is to provide a fastener especially for use in mining and tunneling or for the stabilization of slopes and slopes, which does not have the aforementioned disadvantages and in particular is easy to manufacture and high security of the connection between the ferrule and the elongated Basic body has. It is another object of the invention to provide a method for producing such a fastening element.
  • connection sleeve is determined by rolling technology on the base body.
  • connection sleeve When rolling the connection sleeve is fixed in a simple manner at least non-positively on the body.
  • the connecting sleeve is thus securely fixed to the body regardless of the configuration of the outer wall of the body.
  • the length of the deformed ferrule defines the transmittable load.
  • connection sleeve may already have the connection section for the pretensioning element before the rolling process for fixing the connection sleeve on the main body.
  • connection means and / or the connection section for the biasing element during the rolling process for fixing the connection sleeve are formed on the base body.
  • the elongated body forms the support member of the fastener and can be made of a, z. B. rod-shaped element or several, advantageously interconnected elements such. B. be formed of individual bars or strands.
  • the main body can in addition to a circular cross-section also have a different cross-section.
  • the fastening element is anchored, for example, chemically by means of a curable material in the ground and may have at the end opposite the end of the connection sleeve an advantageous embodiment of the outer wall.
  • a chemical anchoring for example, at the end opposite the end of the connecting sleeve, a mechanical anchoring mechanism, for.
  • a spreading or clamping mechanism provided for the mechanical anchoring of the fastener in the ground.
  • connection sleeve is only partially fixed to the base body, which also includes a connection sleeve with a special configuration, for. B. with differently designed and / or prefabricated sections, is easily fixed to the body.
  • the connecting sleeve has, for example, at least one deformable by rolling or rolling section and then at least one further section, for example, with a particular embodiment, for. B. in relation to its outer contour or its material thickness is provided.
  • the length of the one or more deformed portions is selected according to the loads to be transmitted through the rolled joint. The greater the total length of the deformed sections of the connecting sleeve fixed to the main body, the more contact surface is present between the connecting sleeve and the main body, via which forces can be transmitted.
  • the deformed overall length thus defines the maximum allowable load capacity of the fastener and is chosen accordingly.
  • the connecting portion of the connecting sleeve has an external thread, particularly advantageously a metric or a male external thread, for the connection of a threaded nut as a preloading element with an internal thread designed in accordance with the configuration of the external thread.
  • the connection means is designed as a bayonet connection or a snap connection, to which a suitably designed biasing element can be arranged.
  • the base body has an outer profiling, which in addition to a frictional connection and a positive connection between the base body and the outer sleeve during rolling technical setting of the connection sleeve is created on the body.
  • the positive connection allows higher forces to be transmitted than via a force-locking connection.
  • the base body is tubular, through the interior z.
  • a hardenable mass can be injected into the wellbore.
  • a prefabricated mass can be provided, which can be applied by means of a suitable squeezing out of the body.
  • rinse water can be fed to the drill head during the drilling process through the tubular base body or drill cuttings and drilling dust are removed through the tubular base body during drilling.
  • the base body is made of a glass fiber reinforced plastic (GRP), whereby the fastener has a low weight compared to a base made of steel and is versatile. Due to the rolled-on connecting sleeve, no special requirements are made with regard to the connectability of the base body to the connecting sleeve to the design of the outer wall of the base body made of a glass-fiber-reinforced plastic.
  • GRP glass fiber reinforced plastic
  • the sleeve body is deformed over at least a portion of its length.
  • the sleeve body is deformed over its entire length, so that the largest possible contact surface between the sleeve body or the connecting sleeve and the base body for the transmission of loads is available.
  • This method is simple and independent z. B. by the configuration of the outer wall and / or the material of the body feasible. A consideration of certain materials or combinations of materials, as they are taken into account, for example, in a sleeve body specified by welding on the body, is unnecessary. Depending on the deformability of the material of the sleeve body, the suitable rolling process is selected and the corresponding rollers or rollers used.
  • connection section of the connection sleeve is preferably applied to the outside of the sleeve body at the same time, whereby the fixing of the sleeve body and the shaping of the connection section can take place in one rolling stage.
  • the sleeve body is fixed to the base body and then formed in a further rolling stage, the connection portion of the connection sleeve on the outside of the sleeve body.
  • an external thread is applied to the outside of the sleeve body, which forms the connection portion of the connection sleeve. The coming into contact with the sleeve body surface or the forming area of the rollers or the rollers is in accordance with the connection means to be created, for. As a metric or imperial external thread formed.
  • a sleeve body is used, the inner diameter of which corresponds at least to the maximum outer diameter of the base body, whereby it is simply pushed onto the base body.
  • a sleeve body is used whose inner diameter is slightly larger than the maximum outer diameter of the main body.
  • the inner diameter of the sleeve body corresponds advantageously to 1.05 times to 1.2 times the maximum outer diameter of the main body.
  • fastening element 11 has an elongated base body 12 and a connecting sleeve 22 at one end 13 of the base body 12, which has a connection portion 23 for a biasing member.
  • the connection section 23 of the connection sleeve 22 has an external thread.
  • the connecting sleeve 22 is fixed by rolling to the base body 12, which has an outer profiling 14.
  • the main body 12 is made in this example of a glass fiber reinforced plastic.
  • FIGS. 4A and 4B the inventive method for producing the fastening element 11 is set forth.
  • a sleeve body 24 forming the connection sleeve 22 of a deformable material is pushed over the end 13 of the base body 12.
  • the sleeve body 24 is made of steel, for example, and has a wall thickness W of 1 mm to 4 mm, advantageously of 1.5 mm to 2.5 mm.
  • the sleeve body 24 has an inner diameter D which is at least equal to the maximum outer diameter A of the base body 12.
  • the inner diameter D of the sleeve body 24 in this embodiment corresponds to 1.1 times the maximum outside diameter A of the base body 12, whereby this inner diameter D of the sleeve body 24 is slightly larger than the maximum outer diameter A of the main body 12th is.
  • a fastening element 11 is obtained with a connection sleeve 22 fixed in terms of rolling technology to the base body 12, as shown in FIGS Figures 1 and 2 is shown.
  • the main body 32 is tubular and has a different type of outer profiling 34 than the main body 12 of the fastening element 11.
  • this base body 12 is made of steel in this embodiment.
  • the connecting sleeve 42 is here only partially fixed to two spaced fixing portions 44 by means of rolling to the base body 32. Between the two fixing portions 44 of the male thread having a connecting portion 43 of the connecting sleeve 42 is provided.

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)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Piles And Underground Anchors (AREA)
  • Connection Of Plates (AREA)
  • Clamps And Clips (AREA)
EP20100173070 2009-09-03 2010-08-17 Elément de fixation et procédé destiné à la fabrication d'un élément de fixation Withdrawn EP2295719A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009039919A DE102009039919A1 (de) 2009-09-03 2009-09-03 Befestigungselement und Verfahren zum Herstellen eines Befestigungselementes

Publications (2)

Publication Number Publication Date
EP2295719A2 true EP2295719A2 (fr) 2011-03-16
EP2295719A3 EP2295719A3 (fr) 2015-05-20

Family

ID=43513730

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100173070 Withdrawn EP2295719A3 (fr) 2009-09-03 2010-08-17 Elément de fixation et procédé destiné à la fabrication d'un élément de fixation

Country Status (6)

Country Link
US (1) US20110052343A1 (fr)
EP (1) EP2295719A3 (fr)
AU (1) AU2010214753A1 (fr)
CA (1) CA2714264A1 (fr)
DE (1) DE102009039919A1 (fr)
ZA (1) ZA201006310B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012016083A1 (de) 2012-06-12 2014-01-16 Werner P. Berwald Profilierte Gebirgsanker, Herstellung und Verfahren
DE102016011292A1 (de) 2016-01-26 2017-07-27 Werner Paul Berwald Profilierte nahtlose Ankersysteme, Herstellung und Setzverfahren.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562109B (zh) * 2012-01-15 2014-01-01 山东科技大学 增阻让压的大变形锚杆及其加工方法
USD835977S1 (en) * 2016-02-08 2018-12-18 Ncm Innovation (Pty) Ltd. Grout anchored rock bolt

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725843A (en) 1951-06-01 1955-12-06 Francis A E Koski Sag indicator
EP0188174A1 (fr) 1985-01-17 1986-07-23 H. Weidmann AG Ancre pour la consolidation des parois dans des structures de cavité

Family Cites Families (21)

* Cited by examiner, † Cited by third party
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US2073909A (en) * 1933-06-24 1937-03-16 Weatherhead Co Method of attaching couplings to hose ends
DE1143471B (de) * 1958-05-28 1963-02-14 British Ropes Ltd Gebirgsanker
US3068563A (en) * 1958-11-05 1962-12-18 Westinghouse Electric Corp Metal joining method
DE1500759B1 (de) * 1966-12-14 1970-12-10 Siegfried Gutmann Stahlstabverbindung,insbesondere fuer Staebe von armierten Betonteilen
GB1578328A (en) * 1976-05-14 1980-11-05 Ccl Systems Ltd Compressing of a sleeve on to concrete-reinforcing bars
US4130926A (en) * 1977-02-17 1978-12-26 Ceraver S.A. Method of producing a rod anchoring structure
AU578850B2 (en) * 1985-11-20 1988-11-03 Fosroc International Limited Rock bolt
JPH02252815A (ja) * 1989-03-27 1990-10-11 Kajima Corp 地盤アンカー頭部の定着方法
DE3924121A1 (de) * 1989-07-20 1991-01-24 Meflex Telecontrol Gmbh & Co Verfahren zum umkleiden einer definierten laenge eines steigungskabels mit einer kunststoffschicht
US5152630A (en) * 1991-02-01 1992-10-06 The Crosby Group, Inc. Swage with after-swage dimension indicator
DE19604515C2 (de) * 1995-03-01 1999-04-08 Waltermann Fabrik H Verfahren zur Verbindung eines Verbindungsterminals mit einem Drahtseil
US6571452B1 (en) * 1999-01-19 2003-06-03 Barsplice Products, Inc. Method of making steel couplers for joining concrete reinforcing bars
JP3772627B2 (ja) * 1999-03-04 2006-05-10 日本精工株式会社 衝撃吸収式ステアリングシャフトおよびその製造方法
WO2004098807A1 (fr) * 2000-11-21 2004-11-18 Barsplice Products, Inc. Procede de fabrication de coupleurs en acier permettant d'assembler des barres d'armature du beton
US20030219316A1 (en) * 2002-02-19 2003-11-27 Rataj Mieczyslaw Stanislaw Rock bolt
DE10331061B4 (de) * 2003-07-09 2005-05-19 Technische Universität Dresden Ringförmige Verbundwerkstücke und Kaltwalzverfahren zu ihrer Fertigung
CN2660128Y (zh) * 2003-12-09 2004-12-01 中国矿业大学 一种柔性抗剪锚杆
US7337519B2 (en) * 2005-06-10 2008-03-04 Varco I/P, Inc. Method for producing a coiled tubing connector assembly
AU2006317519B2 (en) * 2005-11-24 2012-11-29 Peter Andrew Gray Self drilling rock bolt
US8020272B2 (en) * 2007-04-20 2011-09-20 GM Global Technology Operations LLC Method for joining tubes
CN201209455Y (zh) * 2008-06-23 2009-03-18 刘立民 预应力柔性锚杆体以及锚杆

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725843A (en) 1951-06-01 1955-12-06 Francis A E Koski Sag indicator
EP0188174A1 (fr) 1985-01-17 1986-07-23 H. Weidmann AG Ancre pour la consolidation des parois dans des structures de cavité

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012016083A1 (de) 2012-06-12 2014-01-16 Werner P. Berwald Profilierte Gebirgsanker, Herstellung und Verfahren
DE102016011292A1 (de) 2016-01-26 2017-07-27 Werner Paul Berwald Profilierte nahtlose Ankersysteme, Herstellung und Setzverfahren.

Also Published As

Publication number Publication date
CA2714264A1 (fr) 2011-03-03
ZA201006310B (en) 2011-05-25
US20110052343A1 (en) 2011-03-03
AU2010214753A1 (en) 2011-03-17
DE102009039919A1 (de) 2011-03-10
EP2295719A3 (fr) 2015-05-20

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