EP1934404B1 - Friction bolt and expansion adaptor for said anchor - Google Patents

Friction bolt and expansion adaptor for said anchor Download PDF

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Publication number
EP1934404B1
EP1934404B1 EP07784595A EP07784595A EP1934404B1 EP 1934404 B1 EP1934404 B1 EP 1934404B1 EP 07784595 A EP07784595 A EP 07784595A EP 07784595 A EP07784595 A EP 07784595A EP 1934404 B1 EP1934404 B1 EP 1934404B1
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EP
European Patent Office
Prior art keywords
sleeve
anchor
casing
expandable tube
tube
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.)
Active
Application number
EP07784595A
Other languages
German (de)
French (fr)
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EP1934404A1 (en
Inventor
Christof Tschernuth
Martin Neuhold
Michael Meidl
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
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Atlas Copco Mai 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 Atlas Copco Mai GmbH filed Critical Atlas Copco Mai GmbH
Priority to PL07784595T priority Critical patent/PL1934404T3/en
Priority to SI200730956T priority patent/SI1934404T1/en
Publication of EP1934404A1 publication Critical patent/EP1934404A1/en
Application granted granted Critical
Publication of EP1934404B1 publication Critical patent/EP1934404B1/en
Priority to CY20121100494T priority patent/CY1112812T1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/805—Ground anchors with deformable anchoring members
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/54—Piles with prefabricated supports or anchoring parts; Anchoring piles
    • 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
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0073—Anchoring-bolts having an inflatable sleeve, e.g. hollow sleeve expanded by a fluid

Definitions

  • the invention relates to a friction tube anchor having the features of the introductory part of claim 1.
  • Reibrohranker are known, in which context, for example, on the US 4,459,067 A and the WO 2006/066 288 A can be referenced.
  • Friction anchors are rock anchors that have a longitudinally inwardly folded tube that is inserted into a wellbore and expanded by increasing the pressure inside the folded tube such that the outer surface of the tube abuts the inner surface of the wellbore and the anchor so sets down in the hole.
  • the front end of the expandable tube 1 is closed by an end sleeve 2.
  • the tube 1 has a substantially over its entire length (omega-like) inwardly folded wall ( Fig. 2 ).
  • the rear end of the tube 1 so the end adjacent to the opening of the borehole (the outer end of the borehole), passes through an anchor plate 3 and carries an inflation sleeve 4 with inflation hole 5.
  • About an attached to the inflation sleeve 4 adapter is under pressure standing fluid (in particular water) is introduced into the interior of the tube 1 and the tube 1 expanded by unfolding the longitudinal fold of the tube 1, so that the Reibrohranker is fixed in the borehole by friction and positive engagement.
  • the invention is based on the object to expand the uses of Reibrohrankern the aforementioned type while retaining the advantages of Reibrohrankern.
  • the sleeve-like sleeve provided in the inventive Reibrohranker serve to couple several expandable tubes of Reibrohrankern together so that the effective length of Reibrohrankern increased and better grip, especially in brittle mountains or loose ground.
  • the sleeve-like sleeve at one end of the expandable tube of the Reibrohrankers can also be used to connect with the expandable tube an inflation adapter through which pressure fluid (water) from a pressure source for expanding the tube is passed into the Reibrohranker.
  • Reibrohranker sleeve-like sleeve can also be used to connect with the Reibrohranker after it has been widened and set in the ground, other components.
  • Such components can be screwed components, such as bolts, in particular screws, eye bolts / Augschrauben od.
  • the sleeve-like sleeve forms a hanger sleeve.
  • a sleeve which is connected to the expandable tube of the Reibrohrankers in the sleeve-like sleeve from one side, and from the other end a bolt, for example an eye bolt od.
  • a bolt for example an eye bolt od.
  • the invention is basically in all types of Reibrohrankern, especially in Reibrohrankern from the WO 2006 / 066288A known type used.
  • the sleeve-like sleeve is formed with two threaded portions so that connected to the expandable tubes of Reibrohrankern sleeves and / or other components such as bolts, eye bolts and the like.
  • inflation adapter can be screwed. It is preferred if the threads for receiving sleeves connected to the expandable tubes of Reibrohrankern round threads, and threads for receiving inflation adapters or other components, such as bolts, metric threads.
  • the thread for receiving the sleeve is a left-hand thread (round thread) and the thread for receiving the inflation adapter or the fastening bolt is a right-hand thread (metric thread).
  • an external thread for example a round thread has.
  • a seal in particular an O-ring, may be provided on its outside.
  • an inflation adapter via which the pressure medium is supplied, is screwed into the end of the sleeve-like sleeve facing outward in the position of use, that is, towards the open end of the bore hole.
  • This inflation adapter has distance from the sleeve or from the attached, expandable tube.
  • the pressure medium occurs in an expandable tube with tightly welded end only on the outside, for example via a provided in the wall of the sleeve hole in the expandable tube.
  • At least one opening for the passage of pressure medium into the interior of the welded tube is provided in the weld at the tightly welded end of the expandable tube, an opening in the wall of the expandable tube is dispensed with as a radial opening in the sleeve.
  • the expandable tube connected to the inserted into the sleeve-like sleeve, in particular screwed over the rolled thread sleeve, z. B. welded, is.
  • this thread-free area of increased diameter does not have to be present if a round thread is present, since the fluid which widens the expandable tube, due to the tolerance of the round thread in the threaded area to flow to the radial opening in the sleeve attached to the expandable tube and can enter there into the expandable tube.
  • This thread-free area on the inside of the sleeve-like sleeve can be omitted if expandable tubes with open welding or expandable tubes with closed welding and opening in the weld are used.
  • the sleeve-like sleeve is formed as a "hanger sleeve", and has a portion with a round thread and a portion with a metric thread, wherein in the round thread, the expandable tube of the Reibrohrankers can be screwed over the sleeve connected to this tube ,
  • a bolt e.g. an eye bolt, to be screwed.
  • the pressurized fluid needed for the expansion of the expandable tube is introduced via an inflation adapter screwed into the metric thread of the sleeve (hanger sleeve).
  • This fluid can now either (in the case of an open welding of the profile of the expandable tube) flow directly axially into the omega profile of the expandable tube. With closed welding, the fluid enters the interior of the expandable tube via at least one radial hole drilled through the expandable tube and the welded sleeve, or through at least one axial hole provided in the weld, as in a conventional friction tube anchor.
  • open welding is a welding of the expandable tube ("profile") understood, in which the web is welded in the middle of the expandable tube, whereas the interior of the expandable tube is open at its end in the axial direction, so that an axial entry of pressurized standing fluid (water) in the tube for expanding this is possible.
  • closed welding shown in FIG Fig. 12 or 23 and 24 is understood a welding in which the clear cross-section of the expandable tube ("profile”) is welded at its end outside, so is tightly closed. Fluid supplied to expand the tube enters the expandable tube via at least one radial bore or via at least one opening in the weld into the interior of the expandable tube.
  • the sleeve-like sleeve is formed with two sections with round threads which are intended to receive by screwing each an expandable tube of a Reibrohrankers on the fixed at the ends of sleeves.
  • the fluid required for the expansion of the expandable tubes can now either emerge axially from an expandable tube (welded open) and penetrate axially into the expandable tube screwed in behind it, or the fluid exits radially through a bore or axially through an opening in the dummy suture the welded closed, expandable tube, flows through the interior of the sleeve-like sleeve and penetrates the second, screwed into the sleeve tube in turn through a radial bore or through an opening (axial hole, eg drilled hole) in the weld in the interior of the expandable Pipe (profile).
  • Fig. 1 a Reibrohranker with schematically represented, expandable tube
  • Fig. 2 a section along the line AA in Fig. 1
  • Fig. 3 an expandable tube with sleeve and sleeve-like sleeve on average
  • Fig. 4 an oblique view of the Reibrohrankers of Fig. 3
  • Fig. 5 in axial section serving as a hanging sleeve sleeve-like sleeve
  • Fig. 6 a sleeve in axial section
  • Fig. 5 in axial section serving as a hanging sleeve sleeve-like sleeve
  • Fig. 6 a sleeve in axial section
  • Fig. 1 a Reibrohranker with schematically represented, expandable tube
  • Fig. 2 a section along the line AA in Fig. 1
  • Fig. 3 an expandable tube with sleeve and sle
  • FIG. 7 in axial section a sleeve-like sleeve with inserted from one end expandable tube and in the other end of the sleeve-like sleeve inserted inflation adapter for the introduction of pressurized fluid
  • Fig. 8 a sleeve-like sleeve with an expanded tube screwed in from one end over a sleeve and eyebolt screwed into the other end of the sleeve-like sleeve
  • Fig. 9 in axial section, a sleeve-like sleeve with tubes screwed in from both sides
  • Fig. 10 the arrangement Fig. 9 in an oblique view
  • Fig. 11 a section along the line AA of Fig.
  • FIG. 12 a section along the line BB in Fig. 9 (only the expandable tube)
  • FIG. 13 an oblique view of a sleeve to be fastened at the end of an expandable tube by welding
  • Fig. 14 the sleeve off Fig. 13 in axial section
  • Fig. 15 the sleeve-like sleeve off Fig. 9 alone in axial section
  • Fig. 16 another embodiment of a sleeve-like sleeve with expandable tubes screwed over sleeves from both sides
  • Fig. 17 a section along the line AA in Fig. 16, Fig. 18 a section along the line BB in Fig. 16 (expandable tube alone)
  • Fig. 17 a section along the line AA in Fig. 16
  • Fig. 18 a section along the line BB in Fig. 16 (expandable tube alone)
  • An inventive Reibrohranker has a in the initial state omega-like (see. Fig. 2 ) folded, expandable tube 1 made of metal, which at one of its ends (the tube is in 3 and 4 only partially shown and at his in the 3 and 4 not shown end closed by the ferrule 2) connected to a sleeve 6, and this sleeve 6 in a sleeve-like sleeve 7, which is designed here as a hanger sleeve, is screwed.
  • the expandable tube 1 of the Reibrohrankers is connected to the sleeve 6 in particular by welding.
  • the sleeve 6 has on its outer side a round thread 8 and an outwardly open circumferential groove 9 into which an O-ring seal 11 is inserted.
  • an O-ring seal 11 is inserted into a circumferential groove 9
  • the section 13 of the sleeve-like sleeve 7 intended for receiving the sleeve 6 and the tube 1 connected to it is provided with an internal thread (round thread) which corresponds to the (rolled) external thread 8 of the sleeve 6.
  • the sleeve-like sleeve 7 has a further threaded portion 14, wherein the threads in the sections 13 and 14 may be in the same direction or in opposite directions.
  • the thread in the section 13 for receiving the sleeve 6 is a left-hand thread and the thread in the section 14 is a right-hand thread.
  • the thread in section 14 may be a metric thread.
  • a thread-free area 15 is provided with an enlarged diameter.
  • no thread-free section with an enlarged diameter needs to be provided between the section 13 and the section 14 of the sleeve-like sleeve 7. This is especially true when the end of the expandable tube 1, which is connected to the sleeve 6, has an "open weld".
  • a bolt such as an eye bolt (see. Fig. 8 ), be screwed.
  • an inflation adapter 20 (cf. FIG. 2) is inserted into the section 14 of the sleeve-like sleeve 7.
  • Fig. 7 a source of a pressure medium (eg water), as is known for Reibrohranker.
  • the inflation adapter 20 is located with its received in the interior of the sleeve-like sleeve 7 end adjacent to the lying in the region of the section 15 of the sleeve-like sleeve 7 end of the sleeve 6.
  • the fastening bolt may be an eyebolt, which optionally remains temporarily screwed into the sleeve-like sleeve 7.
  • a sleeve 6 is screwed into the sleeve-like sleeve 7 in the region of the section 13 with a round thread, with which an expandable tube 1 is welded in the manner of a closed weld, so that the tube 1 is closed at its lying in the region of the sleeve 6 end is.
  • the thread-free region 15 sleeve-like sleeve 7 lying end of the sleeve 6 is formed without thread.
  • an inflation adapter 20 is screwed into the sleeve-like sleeve 7 in the metric thread located there in section 14 and sealed relative to the sleeve 7 by a ring seal (O-ring) 21. Since at the in Fig. 6 shown Arrangement the expandable tube 1 in the region of its sleeve 6 is closed ("closed welding"), the fluid supplied via the inflation adapter 20 enters through radial holes 17 of the sleeve 6 and in the wall of the tube 1 in the interior of the tube 1 and expands this on, like this in Fig. 7 is indicated.
  • Fig. 8 It is shown how in the sleeve-like sleeve 7 after removing the inflation adapter 20, a further component can be screwed.
  • Fig. 9 to 15 It is shown how, using the sleeve-like sleeve 7 provided according to the invention, two expandable tubes 1 can be coupled together to form a friction tube anchor equipped with a greater effective length.
  • the ends of the tubes 1 are connected to sleeves 6, which externally have a rolled thread, and which are screwed into the threaded portions 13 of the sleeve-like sleeve 7.
  • two threaded portions 13, which are formed as a round thread are provided in the sleeve-like sleeve 7, so that the outer round thread having sleeves 6 can be screwed with the tubes 1 in the sleeve-like sleeve 7.
  • tubes 1 are formed at their ends connected to the sleeves 6 in the manner of a "closed weld". Therefore, in the interior of the one of the tubes 1 introduced, pressurized fluid flows from a pipe 1 through the two radial holes 17 and the unthreaded portion 15 between the threaded portions 13 of the sleeve-like sleeve 7 in the next tube. 1
  • FIGS. 13 and 14 show an embodiment of the sleeve 6 in an oblique view ( Fig. 13 ) or on average ( Fig. 14 ), wherein the unthreaded portions and the radial bores 17 can be seen.
  • sleeve-shaped sleeve 7 is in Fig. 15 again shown on average for themselves.
  • Fig. 15 shows the two threaded portions 13 and lying between these sections 13, optionally unthreaded, area 15, which is advantageous for the passage of the fluid in tubes 1 with closed welded ends.
  • Fig. 16 shows an arrangement similar to that of Fig. 9
  • the ends of the tubes 1 with the sleeves 6 with an open seal ( Fig. 18 ) are connected.
  • FIG Fig. 7 An inflation adapter 20 which can be used in conjunction with the sleeve-type sleeve 7 provided in the friction tube anchor according to the invention is shown in FIG Fig. 7 shown.
  • This inflation adapter 20 has an axial channel 25 for supplying the fluid (pressure medium) with which the expandable tube 1 of the friction tube anchor can be widened via the sleeve-type sleeve 7 connected to it.
  • This axial channel 25 is acted upon via a radial bore 27, which opens into the axial channel 25, with pressure medium, which comes from a conventional pressure source.
  • the inflation adapter 20 has, as in Fig. 7 shown, a tapered, projecting into the sleeve-like sleeve 7 section 29.
  • This section 29 carries a thread 31 which corresponds to the thread in the section 14 of the sleeve-like sleeve 7. In particular, it is a metric thread.
  • Fig. 7 shows, in the inventive inflation adapter 20, the thread 31 is not formed over the entire axial length of the tapered, projecting into the sleeve-like sleeve 7 portion 29 of the inflation adapter 20, but only in a limited, lying approximately in the center of the tapered portion 29 area.
  • a ring seal 21 (O-ring) is provided between the thread 31 of the inflation adapter 20 and the outside of the sleeve-like sleeve 7 thereof.
  • inflation adapter 20 When inserted into the sleeve-like sleeve 7, in particular screwed, inflation adapter 20, the ring seal 21 between the adapter end of the sleeve-like sleeve 7 and a shoulder 33 on the inflation adapter 20, so the transition region between the diameter-tapered portion and the larger diameter portion of the inflation adapter 20, clamped.
  • the annular end surface of the sleeve-like sleeve 7 is formed inside with a chamfer 35.
  • Fig. 22 an embodiment of an expandable tube 1 is shown, which is formed in the sleeve 6 fixed end in the manner of a closed weld and connected to the sleeve 6.
  • the weld 41 which is provided at the end of the expandable tube 1 and there closes its interior connects the expandable tube 1 with the sleeve. 6
  • the end lying in the region of the sleeve 6 is closed in the fold of the expandable tube by a plug-shaped insert 43.
  • the plug-shaped insert 43 is connected to the tube 1, for example glued, pressed or welded.
  • pressure medium for expanding the expandable tube 1 can be introduced into the interior, in the weld 41 at least one opening 45 (eg axially drilled hole) is formed, which leads to the interior of the expandable tube 1.
  • pressure medium can enter through the opening 45 into the interior of the expandable tube 1.
  • Fig. 23 is similar in a representation of the Fig. 7 shown as in an expandable tube 1 with closed welding by a weld 41 with opening 45, an inflation adapter 20 can be used.
  • Fig. 24 is closed welding in the embodiment of Fig. 23 , with at least one opening 45 in the weld 41, shown.
  • the Fig. 25 shows how in the sleeve-like sleeve 7 in a closed-welded tube 1, a further component can be screwed.
  • Fig. 26 It is shown how two expandable tubes 1, which can be at their adjacent ends with a closed weld with weld 41 in which the at least one opening 45 is provided, through the sleeve-like sleeve 7 with each other.
  • Fig. 26 It can be seen that in the embodiment of a weld with at least one opening 45, the unthreaded area, as in the embodiment according to FIGS. 9 and 10 , in the case of a closed welding of the adjacent ends of the expandable tubes 1 are required, can be omitted.
  • the sleeve-like sleeve 7 has at its two ends cylindrical thread-free portions 47, so that the ring seals 11 can fulfill their sealing effect well. Between the threads in the sections 13, which are co-rotating or counter-rotating threads, a thread-free section 49 is in the region of the center of the sleeve-like sleeve 7 intended.
  • a Reibrohranker has an expandable under the action of a pressure medium tube 1, which is fixed to a sleeve 6.
  • the sleeve 6 is screwed into a threaded portion 13 of a sleeve-like sleeve 7 and sealed from the inside of the portion 13 by a ring seal 11.
  • the sleeve-like sleeve 7 has a further threaded portion 14, in which either either another expandable tube 1, or an inflation adapter for introducing the pressure medium for expanding the tube 1, or a fastening bolt, such as an eyebolt, can be screwed.

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

Abstract

A friction bolt comprises a tube (1) which can be expanded under the action of a pressure medium and which is fastened to a sleeve (6). The sleeve (6) is screwed into a section (13) of a sleeve-like socket (7) that is provided with a thread and sealed with respect to the inside of the section (13) by means of a ring seal (11). The sleeve-like socket (7) comprises a further section (14) provided with a thread, into which section can be selectively screwed a further expandable tube (1), or an adaptor for feeding in the pressure medium to expand the tube (1), or an anchor bolt, for example an eyebolt.

Description

Die Erfindung betrifft einen Reibrohranker mit den Merkmalen des einleitenden Teils von Anspruch 1.The invention relates to a friction tube anchor having the features of the introductory part of claim 1.

Reibrohranker sind bekannt, in welchem Zusammenhang beispielsweise auf die US 4,459,067 A und die WO 2006/066 288 A verwiesen werden kann.Reibrohranker are known, in which context, for example, on the US 4,459,067 A and the WO 2006/066 288 A can be referenced.

Reibrohranker sind Gebirgsanker (Felsanker), die ein in Längsrichtung nach innen gefaltetes Rohr aufweisen, das in ein Bohrloch eingebracht und durch Erhöhen des Druckes im Inneren des gefalteten Rohres aufgeweitet wird, sodass sich die Außenfläche des Rohres an die Innenfläche des Bohrlochs anlegt und den Anker so im Bohrloch festlegt.Friction anchors are rock anchors that have a longitudinally inwardly folded tube that is inserted into a wellbore and expanded by increasing the pressure inside the folded tube such that the outer surface of the tube abuts the inner surface of the wellbore and the anchor so sets down in the hole.

Bei dem bekannten Reibrohranker (vgl. Fig. 1) ist das vordere Ende des aufweitbaren Rohres 1 durch eine Endhülse 2 geschlossen. Das Rohr 1 hat eine im Wesentlichen über seine ganze Länge (omega-artig) nach innen gefaltete Wand (Fig. 2). Das hintere Ende des Rohres 1, also das Ende, das der Öffnung des Bohrlochs (dem äußeren Ende des Bohrlochs) benachbart ist, durchgreift eine Ankerplatte 3 und trägt eine Inflationshülse 4 mit Inflationsbohrung 5. Über einen an die Inflationshülse 4 angesetzten Adapter wird unter Druck stehendes Fluid (insbesondere Wasser) in das Innere des Rohres 1 eingebracht und das Rohr 1 unter Entfalten der Längsfalte des Rohres 1 aufgeweitet, so dass der Reibrohranker im Bohrloch durch Reibung und Formschluss festgelegt wird.In the known Reibrohranker (see. Fig. 1 ), the front end of the expandable tube 1 is closed by an end sleeve 2. The tube 1 has a substantially over its entire length (omega-like) inwardly folded wall ( Fig. 2 ). The rear end of the tube 1, so the end adjacent to the opening of the borehole (the outer end of the borehole), passes through an anchor plate 3 and carries an inflation sleeve 4 with inflation hole 5. About an attached to the inflation sleeve 4 adapter is under pressure standing fluid (in particular water) is introduced into the interior of the tube 1 and the tube 1 expanded by unfolding the longitudinal fold of the tube 1, so that the Reibrohranker is fixed in the borehole by friction and positive engagement.

Aus der WO 2004/099571 A ist es auch bekannt, an den außen liegenden Endstücken solcher Reibrohranker Schraubbolzen, z.B. Augbolzen (Augschrauben), zur Aufnahme von Lasten zu befestigen.From the WO 2004/099571 A It is also known to attach to the outer end pieces of such Reibrohranker bolts, such as eye bolts (eye bolts), for receiving loads.

Der Erfindung liegt die Aufgabe zu Grunde, die Verwendungsmöglichkeiten von Reibrohrankern der eingangs genannten Gattung unter Beibehalten der Vorteile von Reibrohrankern zu erweitern.The invention is based on the object to expand the uses of Reibrohrankern the aforementioned type while retaining the advantages of Reibrohrankern.

Gelöst wird diese Aufgabe erfindungsgemäß mit einem Reibrohranker, welcher die Merkmale von Anspruch 1 aufweist.This object is achieved according to the invention with a Reibrohranker having the features of claim 1.

Bevorzugte und vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Preferred and advantageous embodiments of the invention are the subject of the dependent claims.

Da bei dem erfindungsgemäßen Reibrohranker eine hülsenartige Muffe vorgesehen ist, die mit dem einen Ende des aufweitbaren Rohres des Reibrohrankers ggf. unter Zwischenfügen einer Hülse verbunden ist, ergeben sich mehrere verschiedene Einsatzmöglichkeiten.Since a sleeve-like sleeve is provided in the inventive Reibrohranker, which is connected to the one end of the expandable tube of Reibrohrankers possibly with the interposition of a sleeve, there are several different uses.

So kann die beim erfindungsgemäßen Reibrohranker vorgesehene hülsenartige Muffe dazu dienen, mehrere aufweitbare Rohre von Reibrohrankern miteinander zu kuppeln, sodass die wirksame Länge von Reibrohrankern erhöht und ein besserer Halt, insbesondere in brüchigem Gebirge oder lockerem Untergrund, erreicht wird.Thus, the sleeve-like sleeve provided in the inventive Reibrohranker serve to couple several expandable tubes of Reibrohrankern together so that the effective length of Reibrohrankern increased and better grip, especially in brittle mountains or loose ground.

Die hülsenartige Muffe an einem Ende des aufweitbaren Rohres des Reibrohrankers kann auch dazu herangezogen werden, mit dem aufweitbaren Rohr einen Inflationsadapter zu verbinden, durch den von einer Druckquelle Druckfluid (Wasser) zum Aufweiten des Rohres in den Reibrohranker geleitet wird.The sleeve-like sleeve at one end of the expandable tube of the Reibrohrankers can also be used to connect with the expandable tube an inflation adapter through which pressure fluid (water) from a pressure source for expanding the tube is passed into the Reibrohranker.

Schließlich kann die beim erfindungsgemäßen Reibrohranker vorgesehene hülsenartige Muffe auch dazu herangezogen werden, mit dem Reibrohranker, nachdem er aufgeweitet und im Untergrund festgelegt worden ist, weitere Bauteile zu verbinden. Solche Bauteile können einschraubbare Bauteile, wie Bolzen, insbesondere Schrauben, Augbolzen/Augschrauben od. dgl., sein. In diesem Fall bildet die hülsenartige Muffe eine Hängerhülse.Finally, provided in the inventive Reibrohranker sleeve-like sleeve can also be used to connect with the Reibrohranker after it has been widened and set in the ground, other components. Such components can be screwed components, such as bolts, in particular screws, eye bolts / Augschrauben od. Like., To be. In this case, the sleeve-like sleeve forms a hanger sleeve.

Wenn bei dem erfindungsgemäßen Reibrohranker die hülsenartige Muffe als Hängerhülse dient, ist in die hülsenartige Muffe von einer Seite her eine Hülse, die mit dem aufweitbaren Rohr des Reibrohrankers verbunden ist, und vom anderen Ende her ein Bolzen, beispielsweise ein Augbolzen od. dgl., einsetzbar, insbesondere einschraubbar. So ergibt sich ein besonders einfacher Aufbau des erfindungsgemäßen Reibrohrankers und die Möglichkeit, diesen in einem Bohrloch festzulegen, indem über das Ende (Gewinde) der hülsenartige Muffe, in die später der Befestigungsbolzen eingesetzt (eingeschraubt) wird, ein Inflationsadapter angesetzt (eingeschraubt) wird, über den das zum Aufweiten des Rohres des Reibrohrankers erforderlich Druckmedium eingeleitet wird. So ist auch die Funktionssicherheit des erfindungsgemäßen Reibrohrankers gewährleistet.When the sleeve-like sleeve serves as a hanger sleeve in the sleeve-like sleeve according to the invention, a sleeve, which is connected to the expandable tube of the Reibrohrankers in the sleeve-like sleeve from one side, and from the other end a bolt, for example an eye bolt od. Like., can be used, in particular screwed. This results in a particularly simple construction of the Reibrohrankers invention and the ability to set this in a borehole by an inflation adapter is attached (screwed) over the end (thread) of the sleeve-like sleeve into which the fastening bolt is later inserted (screwed), over which the pressure medium required for expanding the tube of Reibrohrankers is initiated. Thus, the reliability of the Reibrohrankers invention is guaranteed.

Die Erfindung ist grundsätzlich bei allen Arten von Reibrohrankern, insbesondere auch bei Reibrohrankern der aus der WO 2006/066288A bekannten Bauart verwendbar.The invention is basically in all types of Reibrohrankern, especially in Reibrohrankern from the WO 2006 / 066288A known type used.

In einer Ausführungsform des erfindungsgemäßen Reibrohrankers ist die hülsenartige Muffe mit zwei mit Gewinde versehenen Abschnitten ausgebildet, sodass mit den aufweitbaren Rohren von Reibrohrankern verbundene Hülsen und/oder weitere Bauteile wie Bolzen, Augbolzen und dgl. sowie Inflationsadapter eingeschraubt werden können. Bevorzugt ist es dabei, wenn die Gewinde für die Aufnahme von mit den aufweitbaren Rohren von Reibrohrankern verbundenen Hülsen Rundgewinde sind, und Gewinde zur Aufnahme von Inflationsadaptern oder anderen Bauteilen, wie Bolzen, metrische Gewinde sind.In one embodiment of the friction tube anchor according to the invention, the sleeve-like sleeve is formed with two threaded portions so that connected to the expandable tubes of Reibrohrankern sleeves and / or other components such as bolts, eye bolts and the like., And inflation adapter can be screwed. It is preferred if the threads for receiving sleeves connected to the expandable tubes of Reibrohrankern round threads, and threads for receiving inflation adapters or other components, such as bolts, metric threads.

In Betracht gezogen ist im Rahmen der Erfindung, dass das Gewinde, in dem die Hülse für das aufweitbare Rohr des Reibrohrankers einerseits und das Gewinde, in welchen der Inflationsadapter zum Aufweiten des Rohres bzw. der Befestigungsbolzen eingeschraubt ist, anderseits, gleichsinnige oder gegenläufige Gewinde sind.It is considered within the scope of the invention that the thread in which the sleeve for the expandable tube of the Reibrohrankers on the one hand and the thread, in which the inflation adapter for expanding the Pipe or the fastening bolt is screwed in, on the other hand, the same direction or opposite threads.

Beispielsweise ist das Gewinde zur Aufnahme der Hülse ein Linksgewinde (Rundgewinde) und das Gewinde für das Aufnehmen des Inflationsadapters bzw. des Befestigungsbolzens ein Rechtsgewinde (metrisches Gewinde).For example, the thread for receiving the sleeve is a left-hand thread (round thread) and the thread for receiving the inflation adapter or the fastening bolt is a right-hand thread (metric thread).

Im Rahmen der Erfindung kann vorgesehen sein, dass die Hülse, in der das aufweitbare Rohr des Reibrohrankers festgelegt ist, ein Außengewinde, beispielsweise ein Rundgewinde, aufweist.In the context of the invention can be provided that the sleeve in which the expandable tube of the Reibrohrankers is fixed, an external thread, for example a round thread has.

Um die Hülse gegenüber der hülsenartigen Muffe, insbesondere der Hängerhülse, abzudichten, kann an ihrer Außenseite eine Dichtung, insbesondere ein O-Ring, vorgesehen sein.In order to seal the sleeve relative to the sleeve-like sleeve, in particular the hanger sleeve, a seal, in particular an O-ring, may be provided on its outside.

Beim Setzen des erfindungsgemäßen Reibrohrankers wird ein Inflationsadapter, über welchen das Druckmedium zugeführt wird, in das in der Gebrauchslage nach außen, also zum offenen Ende des Bohrloches hin weisende Ende der hülsenartigen Muffe eingeschraubt. Dieser Inflationsadapter hat Abstand von der Hülse bzw. von dem in ihr befestigten, aufweitbaren Rohr. Das Druck-medium tritt bei einem aufweitbaren Rohr mit dicht verschweißtem Ende ausschließlich über außen, beispielsweise über ein in der Wand der Hülse vorgesehenes Loch in das aufweitbare Rohr ein.When setting the friction tube anchor according to the invention, an inflation adapter, via which the pressure medium is supplied, is screwed into the end of the sleeve-like sleeve facing outward in the position of use, that is, towards the open end of the bore hole. This inflation adapter has distance from the sleeve or from the attached, expandable tube. The pressure medium occurs in an expandable tube with tightly welded end only on the outside, for example via a provided in the wall of the sleeve hole in the expandable tube.

Wenn gemäß einer Ausführungsform der Erfindung in der Schweißnaht am dicht verschweißten Ende des aufweitbaren Rohres wenigstens eine Öffnung für den Durchtritt von Druckmedium in den Innenraum des verschweißten Rohres vorgesehen ist, ist eine Öffnung in der Wand des aufweitbaren Rohres ebenso entbehrlich wie eine radiale Öffnung in der Hülse.If, according to one embodiment of the invention, at least one opening for the passage of pressure medium into the interior of the welded tube is provided in the weld at the tightly welded end of the expandable tube, an opening in the wall of the expandable tube is dispensed with as a radial opening in the sleeve.

In einer Ausführungsform der Erfindung ist vorgesehen, dass das aufweitbare Rohr mit der in die hülsenartige Muffe eingesetzten, insbesondere über das gerollte Gewinde eingeschraubten, Hülse verbunden, z. B. verschweißt, ist.In one embodiment of the invention it is provided that the expandable tube connected to the inserted into the sleeve-like sleeve, in particular screwed over the rolled thread sleeve, z. B. welded, is.

Um das Eintreten der Flüssigkeit für das Aufweiten des Rohres des Reibrohrankers von außen her, insbesondere über die Bohrung in der Wand der Hülse zu erleichtern, ist im Übergang zwischen den Bereichen der hülsenartige Muffe, in welche die Hülse bzw. ein Bolzen eingesetzt wird, insbesondere im Übergang zwischen den beiden Gewindeabschnitten der hülsenartige Muffe, ein Bereich mit vergrößertem Querschnitt, der insbesondere gewindefrei ausgebildet ist, vorgesehen. Dieser gewindefreie Bereich mit vergrößertem Durchmesser muss aber nicht vorliegen, wenn ein Rundgewinde vorliegt, da das Fluid, welches das aufweitbare Rohr aufweitet, auf Grund der Toleranz des Rundgewindes im Gewindebereich bis zu der radialen Öffnung in der am aufweitbaren Rohr befestigten Hülse strömen und dort in das aufweitbare Rohr eintreten kann.In order to facilitate the entry of the liquid for the expansion of the tube of the Reibrohrankers from the outside, in particular via the bore in the wall of the sleeve, is in the transition between the areas of the sleeve-like sleeve, in which the sleeve or a bolt is used, in particular in the transition between the two threaded portions of the sleeve-like sleeve, a region of enlarged cross-section, which is in particular formed thread-free provided. However, this thread-free area of increased diameter does not have to be present if a round thread is present, since the fluid which widens the expandable tube, due to the tolerance of the round thread in the threaded area to flow to the radial opening in the sleeve attached to the expandable tube and can enter there into the expandable tube.

Dieser gewindefreie Bereich an der Innenseite der hülsenartigen Muffe kann entfallen, wenn aufweitbare Rohre mit offener Verschweißung oder aufweitbare Rohre mit geschlossener Verschweißung und Öffnung in der Schweißnaht verwendet werden.This thread-free area on the inside of the sleeve-like sleeve can be omitted if expandable tubes with open welding or expandable tubes with closed welding and opening in the weld are used.

In einer Ausführungsform der Erfindung ist die hülsenartige Muffe als "Hängerhülse" ausgebildet, und weist einen Abschnitt mit einem Rundgewinde und einen Abschnitt mit einem metrischen Gewinde auf, wobei in das Rundgewinde das aufweitbare Rohr des Reibrohrankers über die mit diesem Rohr verbundene Hülse eingeschraubt werden kann. In das metrische Gewinde kann ein Bolzen, z.B. ein Augbolzen, eingeschraubt werden. Bei dieser Ausführungsform wird das für das Aufweiten des aufweitbaren Rohres benötigte unter Druck stehende Fluid über einen in das metrische Gewinde der Muffe (Hängerhülse) eingeschraubten Inflationsadapter eingeleitet. Dieses Fluid kann nun entweder (bei einer offenen Verschweißung des Profils des aufweitbaren Rohres) direkt axial in das Omega-Profil des aufweitbaren Rohres strömen. Bei geschlossener Verschweißung tritt das Fluid wie bei einem üblichen Reibrohranker über wenigstens ein radiales, durch das aufweitbare Rohr und die aufgeschweißte Hülse gebohrten Loch oder durch wenigstens ein axiales, in der Schweißnaht vorgesehenes Loch, in den Innenraum des aufweitbaren Rohres ein.In one embodiment of the invention, the sleeve-like sleeve is formed as a "hanger sleeve", and has a portion with a round thread and a portion with a metric thread, wherein in the round thread, the expandable tube of the Reibrohrankers can be screwed over the sleeve connected to this tube , In the metric thread, a bolt, e.g. an eye bolt, to be screwed. In this embodiment, the pressurized fluid needed for the expansion of the expandable tube is introduced via an inflation adapter screwed into the metric thread of the sleeve (hanger sleeve). This fluid can now either (in the case of an open welding of the profile of the expandable tube) flow directly axially into the omega profile of the expandable tube. With closed welding, the fluid enters the interior of the expandable tube via at least one radial hole drilled through the expandable tube and the welded sleeve, or through at least one axial hole provided in the weld, as in a conventional friction tube anchor.

Unter dem Begriff "offene Verschweißung" (dargestellt in Fig. 18 der Zeichnungen) wird eine Verschweißung des aufweitbaren Rohres ("Profil") verstanden, bei welcher der Steg in der Mitte des aufweitbaren Rohres verschweißt ist wogegen der Innenraum des aufweitbaren Rohres an seinem Ende in axialer Richtung offen ist, sodass ein axialer Eintritt von unter Druck stehendem Fluid (Wasser) in das Rohr zum Aufweiten dieses möglich ist.By the term "open welding" (shown in Fig. 18 the drawings) is a welding of the expandable tube ("profile") understood, in which the web is welded in the middle of the expandable tube, whereas the interior of the expandable tube is open at its end in the axial direction, so that an axial entry of pressurized standing fluid (water) in the tube for expanding this is possible.

Unter dem Begriff "geschlossene Verschweißung" (dargestellt in Fig. 12 bzw. 23 und 24) wird eine Verschweißung verstanden, bei welcher der lichte Querschnitt des aufweitbaren Rohres ("Profil") an seinem Ende außen verschweißt ist, also dicht geschlossen ist. Fluid, das zum Aufweiten des Rohres zugeführt wird, tritt in das aufweitbare Rohr über wenigstens eine radiale Bohrung oder über wenigstens eine Öffnung in der Schweißnaht in den Innenraum des aufweitbaren Rohres ein.By the term "closed welding" (shown in FIG Fig. 12 or 23 and 24) is understood a welding in which the clear cross-section of the expandable tube ("profile") is welded at its end outside, so is tightly closed. Fluid supplied to expand the tube enters the expandable tube via at least one radial bore or via at least one opening in the weld into the interior of the expandable tube.

Ein Unterschied zwischen "Offenschweißen" und "Geschlossenschweißen" liegt im verschweißten Querschnitt des Profils. Dabei ist beim "Geschlossenschweißen" ein erhöhter verschweißter Stahlquerschnitt vorgesehen, sodass die Bruchlast höher ist als bei einem "offengeschweißten" Profil. Bei einer "offenen" Schweißung wird das Profil nicht dicht verschweißt, sodass das für das Aufweiten benötigte, unter Druck stehende Fluid axial in die hülsenartige Muffe austreten kann. Bei einer geschlossenen Verschweißung hingegen wird das Profil dicht verschweißt, ist also an seinem in der hülsenartigen Muffe aufgenommenen Ende geschlossen, sodass eine radial angeordnete Bohrung in der Wand des aufweitbaren Rohres oder eine Öffnung in der Schweißnaht notwendig ist, durch die das Fluid aus- bzw. eintreten kann.A difference between "open welding" and "closed welding" lies in the welded cross-section of the profile. Here, in "closed-end welding", there is an increased welded steel cross-section so that the breaking load is higher than with an "open-welded" profile. In an "open" weld, the profile is not tightly welded so that the pressurized fluid needed for expansion can axially escape into the sleeve-like sleeve. In a closed welding, however, the profile is welded tight, so is closed at its recorded in the sleeve-like sleeve end, so that a radially disposed bore in the wall of the expandable tube or an opening in the weld is necessary, through which the fluid off or . can occur.

In einer Ausführungsform ist die hülsenartige Muffe mit zwei Abschnitten mit Rundgewinden ausgebildet, die dazu bestimmt sind, je ein aufweitbares Rohr eines Reibrohrankers über die an deren Enden festgelegten Hülsen durch Einschrauben aufzunehmen. Dabei kann das für das Aufweiten der aufweitbaren Rohre benötigte Fluid nun entweder axial aus einem (offen verschweißten) aufweitbaren Rohr austreten und axial in das dahinter eingeschraubte aufweitbare Rohr eindringen, oder das Fluid tritt radial durch eine Bohrung oder axial durch eine Öffnung in der Scheißnaht aus dem geschlossen verschweißten, aufweitbaren Rohr aus, fließt durch den Innenraum der hülsenartigen Muffe und dringt beim zweiten, in die Muffe eingeschraubten Rohr wiederum durch eine radiale Bohrung oder durch eine Öffnung (axiales Loch, z.B. gebohrtes Loch) in der Schweißnaht in den Innenraum des aufweitbaren Rohres (Profil) ein.In one embodiment, the sleeve-like sleeve is formed with two sections with round threads which are intended to receive by screwing each an expandable tube of a Reibrohrankers on the fixed at the ends of sleeves. In this case, the fluid required for the expansion of the expandable tubes can now either emerge axially from an expandable tube (welded open) and penetrate axially into the expandable tube screwed in behind it, or the fluid exits radially through a bore or axially through an opening in the dummy suture the welded closed, expandable tube, flows through the interior of the sleeve-like sleeve and penetrates the second, screwed into the sleeve tube in turn through a radial bore or through an opening (axial hole, eg drilled hole) in the weld in the interior of the expandable Pipe (profile).

Grundsätzlich gibt es im Rahmen der Erfindung insbesondere und beispielhaft die folgenden Kombinationen:

  • Ein einzelner Reibrohranker mit angeschraubter hülsenartiger Muffe, (Hängerhülse) und Augbolzen,
  • zwei oder mehrere zusammengeschraubte Reibrohranker mit aufgeschraubter hülsenartiger Muffe und Augbolzen
    und
  • zwei oder mehrere zusammengeschraubten Reibrohranker mit einer normalen Endhülse mit Inflationsloch und Ankerplatte (ähnlich wie in Fig. 1 gezeigt).
Basically, within the scope of the invention, the following combinations are given by way of example and by way of example:
  • A single Reibrohranker with screwed sleeve-like sleeve, (hanger sleeve) and eye bolts,
  • two or more screwed together Reibrohranker with screwed sleeve-like sleeve and eye bolts
    and
  • two or more screwed together Reibrohranker with a normal ferrule with inflation hole and anchor plate (similar to in Fig. 1 shown).

Weitere Einzelheiten und Merkmale der Erfindung ergeben sich aus der nachstehenden Beschreibung eines bevorzugten Ausführungsbeispiels an Hand der Zeichnungen.Further details and features of the invention will become apparent from the following description of a preferred embodiment with reference to the drawings.

Es zeigt: Fig. 1 einen Reibrohranker mit schematisch dargestelltem, aufweitbaren Rohr, Fig. 2 einen Schnitt längs der Linie A-A in Fig. 1, Fig. 3 ein aufweitbares Rohr mit Hülse und hülsenartiger Muffe im Schnitt, Fig. 4 eine Schrägansicht des Reibrohrankers von Fig. 3, Fig. 5 im Axialschnitt die als Hängerhülse dienende hülsenartige Muffe, Fig. 6 eine Hülse im Axialschnitt, Fig. 7 im Axialschnitt eine hülsenartige Muffe mit von einem Ende her eingesetztem aufweitbaren Rohr und in das andere Ende der hülsenartigen Muffe eingesetztem Inflationsadapter für das Einleiten von Druckfluid, Fig. 8 eine hülsenartige Muffe mit von einem Ende her über eine Hülse eingeschraubtem aufgeweiteten Rohr und in das andere Ende der hülsenartigen Muffe eingeschraubtem Augbolzen, Fig. 9 im Axialschnitt eine hülsenartige Muffe mit von beiden Seiten her eingeschraubten Rohren, Fig. 10 die Anordnung aus Fig. 9 in Schrägansicht, Fig. 11 einen Schnitt längs der Linie A-A von Fig. 9, Fig. 12 einen Schnitt längs der Linie B-B in Fig. 9 (nur das aufweitbare Rohr), Fig. 13 in Schrägansicht eine am Ende eines aufweitbaren Rohres durch Schweißen zu befestigende Hülse, Fig. 14 die Hülse aus Fig. 13 im Axialschnitt, Fig. 15 die hülsenartige Muffe aus Fig. 9 für sich alleine im Axialschnitt, Fig. 16 eine andere Ausführungsform einer hülsenartigen Muffe mit von beiden Seiten her über Hülsen eingeschraubten, aufweitbaren Rohren, Fig. 17 einen Schnitt längs der Linie A-A in Fig. 16, Fig. 18 einen Schnitt längs der Linie B-B in Fig. 16 (aufweitbares Rohr alleine), Fig. 19 die mit dem aufweitbaren Rohr verbundene (verschweißte) Hülse in Schrägansicht, Fig. 20 die Hülse aus Fig. 19 im Schnitt, Fig. 21 die hülsenartige Muffe aus Fig. 16 für sich alleine im Axialschnitt, Fig. 22 in einer Ansicht ähnlich Fig. 3 eine Ausführungsform mit geschlossener Verschweißung im Längsschnitt, Fig. 23 eine Ausführungsform ähnlich Fig. 7 bei geschlossener Verschweißung am aufweitbaren Rohr im Längsschnitt, Fig. 24 einen Schnitt längs der Linie B-B in Fig. 23, Fig. 25 eine Ausführungsform ähnlich der von Fig. 8 mit geschlossen verschweißtem, aufweitbarem Rohr teilweise geschnitten und Fig. 26 eine Ausführungsform (teilweise) mit zwei über eine hülsenartige Muffe miteinander verbundenen aufweitbaren Rohren, jeweils mit geschlossener Verschweißung.It shows: Fig. 1 a Reibrohranker with schematically represented, expandable tube, Fig. 2 a section along the line AA in Fig. 1 . Fig. 3 an expandable tube with sleeve and sleeve-like sleeve on average, Fig. 4 an oblique view of the Reibrohrankers of Fig. 3 . Fig. 5 in axial section serving as a hanging sleeve sleeve-like sleeve, Fig. 6 a sleeve in axial section, Fig. 7 in axial section a sleeve-like sleeve with inserted from one end expandable tube and in the other end of the sleeve-like sleeve inserted inflation adapter for the introduction of pressurized fluid, Fig. 8 a sleeve-like sleeve with an expanded tube screwed in from one end over a sleeve and eyebolt screwed into the other end of the sleeve-like sleeve, Fig. 9 in axial section, a sleeve-like sleeve with tubes screwed in from both sides, Fig. 10 the arrangement Fig. 9 in an oblique view, Fig. 11 a section along the line AA of Fig. 9, Fig. 12 a section along the line BB in Fig. 9 (only the expandable tube), Fig. 13 an oblique view of a sleeve to be fastened at the end of an expandable tube by welding, Fig. 14 the sleeve off Fig. 13 in axial section, Fig. 15 the sleeve-like sleeve off Fig. 9 alone in axial section, Fig. 16 another embodiment of a sleeve-like sleeve with expandable tubes screwed over sleeves from both sides, Fig. 17 a section along the line AA in Fig. 16, Fig. 18 a section along the line BB in Fig. 16 (expandable tube alone), Fig. 19 the (welded) sleeve connected to the expandable tube in an oblique view, Fig. 20 the sleeve off Fig. 19 on average, Fig. 21 the sleeve-like sleeve off Fig. 16 alone in axial section, Fig. 22 similar in a view Fig. 3 an embodiment with closed welding in longitudinal section, Fig. 23 an embodiment similar Fig. 7 with closed welding on the expandable tube in longitudinal section, Fig. 24 a section along the line BB in Fig. 23, Fig. 25 an embodiment similar to that of Fig. 8 with closed welded, expandable tube partially cut and Fig. 26 an embodiment (partially) with two about a sleeve-like sleeve with each other connected expandable pipes, each with closed welding.

Ein erfindungsgemäßer Reibrohranker besitzt ein im Ausgangszustand omega-artig (vgl. Fig. 2) gefaltetes, aufweitbares Rohr 1 aus Metall, das an einem seiner Enden (das Rohr ist in Fig. 3 und 4 nur teilweise dargestellt und an seinem in den Fig. 3 und 4 nicht gezeigten Ende durch die Endhülse 2 verschlossen) mit einer Hülse 6 verbunden, und über diese Hülse 6 in eine hülsenartige Muffe 7, die hier als Hängerhülse ausgebildet ist, eingeschraubt ist.An inventive Reibrohranker has a in the initial state omega-like (see. Fig. 2 ) folded, expandable tube 1 made of metal, which at one of its ends (the tube is in 3 and 4 only partially shown and at his in the 3 and 4 not shown end closed by the ferrule 2) connected to a sleeve 6, and this sleeve 6 in a sleeve-like sleeve 7, which is designed here as a hanger sleeve, is screwed.

Das aufweitbare Rohr 1 des Reibrohrankers ist mit der Hülse 6 insbesondere durch Schweißen verbunden. Dabei kann eine "offene Schweißung" vgl. Fig. 18 oder eine "geschlossene Verschweißung" vgl. Fig. 12 oder Fig. 23/24 gewählt werden.The expandable tube 1 of the Reibrohrankers is connected to the sleeve 6 in particular by welding. In this case, an "open weld" cf. Fig. 18 or a "closed welding" cf. Fig. 12 or Fig. 23/24 to get voted.

Die Hülse 6 besitzt an ihrer Außenseite ein Rundgewinde 8 und eine nach außen offene Umfangsnut 9, in die eine O-Ringdichtung 11 eingesetzt wird. Anstelle der in eine Umfangsnut 9 eingesetzten Ringdichtung 11 ist jede andere Abdichtung der Hülse 6 gegenüber der hülsenartigen Muffe 7, wie zum Beispiel eine Flachdichtung, im Rahmen der Erfindung ebenso in Betracht gezogen. Der für die Aufnahme der Hülse 6 und des mit ihr verbundenen Rohres 1 bestimmte Abschnitt 13 der hülsenartigen Muffe 7 ist mit einem Innengewinde (Rundgewinde) versehen, das dem (gerollten) Außengewinde 8 der Hülse 6 entspricht.The sleeve 6 has on its outer side a round thread 8 and an outwardly open circumferential groove 9 into which an O-ring seal 11 is inserted. Instead of the annular seal 11 inserted into a circumferential groove 9, any other sealing of the sleeve 6 with respect to the sleeve-like sleeve 7, such as a flat gasket, is also considered within the scope of the invention. The section 13 of the sleeve-like sleeve 7 intended for receiving the sleeve 6 and the tube 1 connected to it is provided with an internal thread (round thread) which corresponds to the (rolled) external thread 8 of the sleeve 6.

Die hülsenartigen Muffe 7 besitzt einen weiteren Abschnitt mit Gewinde 14, wobei die Gewinde in den Abschnitten 13 und 14 gleichsinnig oder gegenläufig sein können. Beispielsweise ist das Gewinde im Abschnitt 13 zur Aufnahme der Hülse 6 ein Linksgewinde und das Gewinde im Abschnitt 14 ein Rechtsgewinde. Das Gewinde im Abschnitt 14 kann ein metrisches Gewinde sein.The sleeve-like sleeve 7 has a further threaded portion 14, wherein the threads in the sections 13 and 14 may be in the same direction or in opposite directions. For example, the thread in the section 13 for receiving the sleeve 6 is a left-hand thread and the thread in the section 14 is a right-hand thread. The thread in section 14 may be a metric thread.

Im Bereich 15 zwischen den mit Gewinde versehenen Abschnitten 13 und 14 ist in der hülsenartigen Muffe 7 in einer bevorzugten Ausführungsform ein gewindefreier Bereich 15 mit vergrößertem Durchmesser vorgesehen. Wie bereits angedeutet, braucht - insbesondere wenn die Hülse 6 außen ein Rundgewinde und die hülsenartigen Muffe 7 in ihrem Bereich 13 ein Rundgewinde aufweist - zwischen dem Abschnitt 13 und dem Abschnitt 14 der hülsenartigen Muffe 7 kein gewindefreier Abschnitt mit vergrößertem Durchmesser vorgesehen sein. Dies gilt insbesondere, wenn das Ende des aufweitbaren Rohres 1, das mit der Hülse 6 verbunden ist, eine "offene Verschweißung" aufweist. Aber auch wenn das Ende des Rohres 1, das im Bereich der Hülse 6 liegt, mit einer "geschlossenen Verschweißung" ausgebildet ist, ist ein gewindefreier Bereich, der gegebenenfalls auch einen vergrößerten Durchmesser aufweist (Bereich 15 der hülsenartigen Muffe 7), nicht zwingend vorgesehen. Wie erwähnt, kann das unter Druck stehende Fluid auf Grund der Toleranzen von Rundgewinden durch den Gewindeabschnitt, also zwischen der Innenfläche des Abschnittes 14 der hülsenartigen Muffe 7 und der Außenfläche der Hülse 6, strömen.In the area 15 between the threaded portions 13 and 14, in the sleeve-type sleeve 7 in a preferred embodiment, a thread-free area 15 is provided with an enlarged diameter. As already indicated, especially when the sleeve 6 has a round thread on the outside and the sleeve-like sleeve 7 has a round thread in its region 13, no thread-free section with an enlarged diameter needs to be provided between the section 13 and the section 14 of the sleeve-like sleeve 7. This is especially true when the end of the expandable tube 1, which is connected to the sleeve 6, has an "open weld". But even if the end of the tube 1, which is located in the region of the sleeve 6, formed with a "closed weld" is a thread-free area, if necessary also has an enlarged diameter (area 15 of the sleeve-like sleeve 7), not necessarily provided. As mentioned, the pressurized fluid due to the tolerances of round threads through the threaded portion, ie between the inner surface of the portion 14 of the sleeve-like sleeve 7 and the outer surface of the sleeve 6, flow.

In den Abschnitt 14 der hülsenartigen Muffe 7 mit Innengewinde kann ein Bolzen, beispielsweise ein Augbolzen (vgl. Fig. 8), eingeschraubt werden.In the section 14 of the sleeve-like sleeve 7 with internal thread, a bolt, such as an eye bolt (see. Fig. 8 ), be screwed.

Wenn ein erfindungsgemäßer Anker gesetzt wird, also das Rohr 1 aufzuweiten ist, wird in den Abschnitt 14 der hülsenartigen Muffe 7 ein Inflationsadapter 20 (vgl. Fig. 7)) eingeschraubt, der mit einer Quelle für ein Druckmedium (z.B. Wasser) verbunden ist, wie dies für Reibrohranker bekannt ist. Der Inflationsadapter 20 liegt mit seinem im Inneren der Hülsenartigen Muffe 7 aufgenommenen Ende neben dem im Bereich des Abschnittes 15 der Hülsenartigen Muffe 7 liegenden Ende der Hülse 6. Das Druckmedium tritt aus dem Inflationsadapter 20 axial aus, umströmt bei "geschlossen verschweißtem" Rohr 1 das innen liegende Ende der Hülse 6 und tritt durch die in der Wand der Hülse 6 vorgesehene Bohrung 17 oder durch eine Öffnung in der Verschweißung in den Innenraum des aufweitbaren Rohres 1 des Reibrohrankers ein und bewirkt, dass sich das Rohr 1 aufweitet und eng an die Innenfläche eines Bohrlochs anlegt und so seine Funktion als Reibrohranker erfüllt. Wenn das aufweitbare Rohr 1 mit der Hülse 6 in Form einer "offenen Veschweißung" verbunden ist, kann das Druckmedium unmittelbar in das Innere des aufweitbaren Rohres 1 eintreten und weitet dieses - wie für Reibrohranker üblich - auf.When an anchor according to the invention is set, ie the tube 1 is to be widened, an inflation adapter 20 (cf. FIG. 2) is inserted into the section 14 of the sleeve-like sleeve 7. Fig. 7 )), which is connected to a source of a pressure medium (eg water), as is known for Reibrohranker. The inflation adapter 20 is located with its received in the interior of the sleeve-like sleeve 7 end adjacent to the lying in the region of the section 15 of the sleeve-like sleeve 7 end of the sleeve 6. The pressure medium exits from the inflation adapter 20 axially, flows around at "closed welded" tube 1 the inner end of the sleeve 6 and enters through the provided in the wall of the sleeve 6 bore 17 or through an opening in the weld in the interior of the expandable tube 1 of the Reibrohrankers and causes the tube 1 expands and close to the inner surface a borehole and thus fulfills its function as Reibrohranker. If the expandable tube 1 is connected to the sleeve 6 in the form of an "open Veschweißung", the pressure medium can enter directly into the interior of the expandable tube 1 and expands this - as usual for Reibrohranker - on.

Nach dem Herausschrauben des Inflationsadapters 20 aus dem Abschnitt 14 der Hülsenartigen Muffe 7 kann dort ein Befestigungsbolzen (Fig. 8) eingeschraubt werden. Der Befestigungsbolzen kann ein Augbolzen sein, der gegebenenfalls auch nur vorübergehend in die hülsenartigen Muffe 7 eingeschraubt bleibt.After unscrewing the inflation adapter 20 from the portion 14 of the sleeve-like sleeve 7 there may be a fastening bolt ( Fig. 8 ) are screwed. The fastening bolt may be an eyebolt, which optionally remains temporarily screwed into the sleeve-like sleeve 7.

In Fig. 7 ist gezeigt, wie in die hülsenartige Muffe 7 im Bereich des Abschnittes 13 mit Rundgewinde eine Hülse 6 eingeschraubt ist, mit der ein aufweitbares Rohr 1 nach Art einer geschlossenen Verschweißung verschweißt ist, sodass das Rohr 1 an seinem im Bereich der Hülse 6 liegenden Ende geschlossen ist. Das im gewindefreien Bereich 15 hülsenartigen Muffe 7 liegende Ende der Hülse 6 ist ohne Gewinde ausgebildet.In Fig. 7 It is shown how a sleeve 6 is screwed into the sleeve-like sleeve 7 in the region of the section 13 with a round thread, with which an expandable tube 1 is welded in the manner of a closed weld, so that the tube 1 is closed at its lying in the region of the sleeve 6 end is. The thread-free region 15 sleeve-like sleeve 7 lying end of the sleeve 6 is formed without thread.

Von der dem Rohr 1 gegenüberliegenden Seite ist in die hülsenartige Muffe 7 in das dort befindliche metrische Gewinde im Abschnitt 14 ein Inflationsadapter 20 eingeschraubt und gegenüber der Muffe 7 durch eine Ringdichtung (O-Ring) 21 abgedichtet. Da bei der in Fig. 6 gezeigten Anordnung das aufweitbare Rohr 1 im Bereich seiner Hülse 6 geschlossen ist ("geschlossene Verschweißung"), tritt das über den Inflationsadapter 20 zugeführte Fluid durch radiale Bohrungen 17 der Hülse 6 und in der Wandung des Rohres 1 in das Innere des Rohres 1 ein und weitet dieses auf, wie dies in Fig. 7 angedeutet ist.From the opposite side of the tube 1, an inflation adapter 20 is screwed into the sleeve-like sleeve 7 in the metric thread located there in section 14 and sealed relative to the sleeve 7 by a ring seal (O-ring) 21. Since at the in Fig. 6 shown Arrangement the expandable tube 1 in the region of its sleeve 6 is closed ("closed welding"), the fluid supplied via the inflation adapter 20 enters through radial holes 17 of the sleeve 6 and in the wall of the tube 1 in the interior of the tube 1 and expands this on, like this in Fig. 7 is indicated.

In Fig. 8 ist gezeigt, wie in die hülsenartige Muffe 7 nach dem Abnehmen des Inflationsadapters 20 ein weiterer Bauteil eingeschraubt werden kann. Im gezeigten Ausführungsbeispiel der Fig. 7 ist dies eine Augschraube 22, die in den Gewindeabschnitt 14 der hülsenartige Muffe 7 eingeschraubt ist.In Fig. 8 It is shown how in the sleeve-like sleeve 7 after removing the inflation adapter 20, a further component can be screwed. In the illustrated embodiment of the Fig. 7 This is an eyebolt 22 which is screwed into the threaded portion 14 of the sleeve-like sleeve 7.

In den Fig. 9 bis 15 ist gezeigt, wie unter Verwendung der erfindungsgemäß vorgesehenen, hülsenartigen Muffe 7 zwei aufweitbare Rohre 1 miteinander gekuppelt werden können, um einen mit größerer wirksamer Länge ausgestatteten Reibrohranker zu bilden. Hier sind die Enden der Rohre 1 mit Hülsen 6 verbunden, die außen ein gerolltes Gewinde aufweisen, und die in die Gewindeabschnitte 13 der hülsenartigen Muffe 7 eingeschraubt sind. In diesem Ausführungsbeispiel sind in der hülsenartigen Muffe 7 zwei mit Gewinde versehenen Abschnitte 13, die als Rundgewinde ausgebildet sind, vorgesehen, sodass die außen Rundgewinde aufweisenden Hülsen 6 mit den Rohren 1 in die hülsenartige Muffe 7 eingeschraubt werden können.In the Fig. 9 to 15 It is shown how, using the sleeve-like sleeve 7 provided according to the invention, two expandable tubes 1 can be coupled together to form a friction tube anchor equipped with a greater effective length. Here, the ends of the tubes 1 are connected to sleeves 6, which externally have a rolled thread, and which are screwed into the threaded portions 13 of the sleeve-like sleeve 7. In this embodiment, two threaded portions 13, which are formed as a round thread, are provided in the sleeve-like sleeve 7, so that the outer round thread having sleeves 6 can be screwed with the tubes 1 in the sleeve-like sleeve 7.

In Fig. 12 ist gezeigt, dass Rohre 1 an ihren mit den Hülsen 6 verbundenen Enden nach Art einer "geschlossenen Verschweißung" ausgebildet sind. Daher strömt in das Innere des einen der Rohre 1 eingeleitetes, unter Druck stehendes Fluid von einem Rohr 1 über die beiden radialen Bohrungen 17 und den gewindefreien Bereich 15 zwischen den Gewindeabschnitten 13 der hülsenartigen Muffe 7 in das nächste Rohr 1.In Fig. 12 It is shown that tubes 1 are formed at their ends connected to the sleeves 6 in the manner of a "closed weld". Therefore, in the interior of the one of the tubes 1 introduced, pressurized fluid flows from a pipe 1 through the two radial holes 17 and the unthreaded portion 15 between the threaded portions 13 of the sleeve-like sleeve 7 in the next tube. 1

Die Fig. 13 und 14 zeigen eine Ausführungsform der Hülse 6 in Schrägansicht (Fig. 13) bzw. im Schnitt (Fig. 14), wobei die gewindefreien Abschnitte und die radialen Bohrungen 17 zu sehen sind. Die bei der Ausführungsform der Fig. 9 verwendete hülsenförmige Muffe 7 ist in Fig. 15 im Schnitt noch einmal für sich selbst dargestellt. Fig. 15 zeigt die beiden mit Gewinde versehenen Abschnitte 13 und den zwischen diesen Abschnitten 13 liegenden, gegebenenfalls gewindefreien, Bereich 15, der für den Übertritt des Fluid bei Rohren 1 mit geschlossenen verschweißten Enden vorteilhaft ist.The FIGS. 13 and 14 show an embodiment of the sleeve 6 in an oblique view ( Fig. 13 ) or on average ( Fig. 14 ), wherein the unthreaded portions and the radial bores 17 can be seen. In the embodiment of the Fig. 9 used sleeve-shaped sleeve 7 is in Fig. 15 again shown on average for themselves. Fig. 15 shows the two threaded portions 13 and lying between these sections 13, optionally unthreaded, area 15, which is advantageous for the passage of the fluid in tubes 1 with closed welded ends.

Fig. 16 zeigt eine Anordnung ähnlich der von Fig. 9, wobei hier die Enden der Rohre 1 mit den Hülsen 6 mit einer offenen verschweißung (Fig. 18) verbunden sind. Dadurch sind gewindefreie Bereiche 15 im Inneren der hülsenförmigen Muffe 7 und die radialen Bohrungen 17 der Wandung der Rohre 1 und in den Hülsen 6 entbehrlich, da das Fluid aus dem einen Rohr 1 in das andere Rohr 1 in axialer Richtung übertreten kann. Fig. 16 shows an arrangement similar to that of Fig. 9 Here, the ends of the tubes 1 with the sleeves 6 with an open seal ( Fig. 18 ) are connected. As a result, thread-free areas 15 in the interior of the sleeve-shaped sleeve 7 and the radial holes 17 of the wall of the No need for pipes 1 and 6 in the sleeves, since the fluid from one pipe 1 in the other tube 1 can pass in the axial direction.

Ein in Verbindung mit der beim erfindungsgemäßen Reibrohranker vorgesehenen, hülsenartigen Muffe 7 verwendbarer Inflationsadapter 20 ist in Fig. 7 gezeigt.An inflation adapter 20 which can be used in conjunction with the sleeve-type sleeve 7 provided in the friction tube anchor according to the invention is shown in FIG Fig. 7 shown.

Dieser Inflationsadapter 20 weist zum Zuführen des Fluid (Druckmedium), mit dem das aufweitbare Rohr 1 des Reibrohrankers über die mit ihm verbundene hülsenartige Muffe 7 aufgeweitet werden kann, einen axialen Kanal 25 auf. Dieser axiale Kanal 25 wird über eine radiale Bohrung 27, die in den axialen Kanal 25 mündet, mit Druckmedium, das von einer üblichen Druckquelle kommt, beaufschlagt.This inflation adapter 20 has an axial channel 25 for supplying the fluid (pressure medium) with which the expandable tube 1 of the friction tube anchor can be widened via the sleeve-type sleeve 7 connected to it. This axial channel 25 is acted upon via a radial bore 27, which opens into the axial channel 25, with pressure medium, which comes from a conventional pressure source.

Der Inflationsadapter 20 weist, wie in Fig. 7 gezeigt, einen verjüngten, in die hülsenartige Muffe 7 ragenden Abschnitt 29 auf. Dieser Abschnitt 29 trägt ein Gewinde 31, das mit dem Gewinde im Abschnitt 14 der hülsenartigen Muffe 7 korrespondiert. Insbesondere handelt es sich um ein metrisches Gewinde.The inflation adapter 20 has, as in Fig. 7 shown, a tapered, projecting into the sleeve-like sleeve 7 section 29. This section 29 carries a thread 31 which corresponds to the thread in the section 14 of the sleeve-like sleeve 7. In particular, it is a metric thread.

Wie Fig. 7 zeigt, ist bei dem erfindungsgemäßen Inflationsadapter 20 das Gewinde 31 nicht über die gesamte axiale Länge des verjüngten, in die hülsenartige Muffe 7 ragenden Abschnitts 29 des Inflationsadapters 20 ausgebildet, sondern nur in einem begrenzten, etwa in der Mitte des verjüngten Abschnittes 29 liegenden Bereich.As Fig. 7 shows, in the inventive inflation adapter 20, the thread 31 is not formed over the entire axial length of the tapered, projecting into the sleeve-like sleeve 7 portion 29 of the inflation adapter 20, but only in a limited, lying approximately in the center of the tapered portion 29 area.

Zwischen dem Gewinde 31 des Inflationsadapters 20 und dem außerhalb der hülsenartigen Muffe 7 liegenden Teil desselben ist eine Ringdichtung 21 (O-Ring) vorgesehen. Bei in die hülsenartige Muffe 7 eingesetzten, insbesondere eingeschraubten, Inflationsadapter 20 wird die Ringdichtung 21 zwischen dem adapterseitigen Ende der hülsenartigen Muffe 7 und einer Schulter 33 am Inflationsadapter 20, also dem Übergangsbereich zwischen dem durchmesserverjüngten Abschnitt und dem durchmessergrößerem Abschnitt des Inflationsadapters 20, geklemmt. Hiezu ist die ringförmige Endfläche der hülsenartigen Muffe 7 innen mit einer Fase 35 ausgebildet.A ring seal 21 (O-ring) is provided between the thread 31 of the inflation adapter 20 and the outside of the sleeve-like sleeve 7 thereof. When inserted into the sleeve-like sleeve 7, in particular screwed, inflation adapter 20, the ring seal 21 between the adapter end of the sleeve-like sleeve 7 and a shoulder 33 on the inflation adapter 20, so the transition region between the diameter-tapered portion and the larger diameter portion of the inflation adapter 20, clamped. For this purpose, the annular end surface of the sleeve-like sleeve 7 is formed inside with a chamfer 35.

In Fig. 22 ist eine Ausführungsform eines aufweitbaren Rohres 1 gezeigt, dessen in der Hülse 6 festgelegtes Ende nach Art einer geschlossenen Verschweißung ausgebildet und mit der Hülse 6 verbunden ist. Die Schweißnaht 41, die am Ende des aufweitbaren Rohres 1 vorgesehen ist und dort dessen Innenraum verschließt verbindet das aufweitbare Rohr 1 auch mit der Hülse 6.In Fig. 22 an embodiment of an expandable tube 1 is shown, which is formed in the sleeve 6 fixed end in the manner of a closed weld and connected to the sleeve 6. The weld 41, which is provided at the end of the expandable tube 1 and there closes its interior connects the expandable tube 1 with the sleeve. 6

Zusätzlich ist bei der in Fig. 22 gezeigten Ausführungsform, das in Bereich der Hülse 6 liegende Ende, in der Falte des aufweitbaren Rohres durch einen stöpselförmigen Einsatz 43 verschlossen. Der stöpselförmige Einsatz 43 ist mit dem Rohr 1 verbunden, beispielsweise eingeklebt, eingepresst oder verschweißt.In addition, at the in Fig. 22 In the embodiment shown, the end lying in the region of the sleeve 6 is closed in the fold of the expandable tube by a plug-shaped insert 43. The plug-shaped insert 43 is connected to the tube 1, for example glued, pressed or welded.

Damit bei der in Fig. 22 gezeigten Ausführungsform einer geschlossenen Verschweißung des aufweitbaren Rohres 1 Druckmedium zum Aufweiten des aufweitbaren Rohres 1 in dessen Innenraum eingeleitet werden kann, ist in der Verschweißung 41 wenigstens eine Öffnung 45 (z.B. axial gebohrtes Loch) ausgebildet, die zum Innenraum des aufweitbaren Rohres 1 führt. So kann Druckmedium durch die Öffnung 45 in den Innenraum des aufweitbaren Rohres 1 eintreten. Es ist ersichtlich, dass bei der Ausführungsform mit geschlossener Verschweißung des aufweitbaren Rohres 1 und mit einer Öffnung 45 in der Schweißnaht 41 für den Eintritt des Druckmediums, die bei anderen Ausführungsformen vorgesehenen radialen Bohrungen 17 in der Hülse 6 (Fig. 6) und die damit fluchtende Bohrung in der Wand des aufweitbaren Rohres 1 (Fig. 7) entbehrlich sind.Thus at the in Fig. 22 shown embodiment of a closed welding of the expandable tube 1 pressure medium for expanding the expandable tube 1 can be introduced into the interior, in the weld 41 at least one opening 45 (eg axially drilled hole) is formed, which leads to the interior of the expandable tube 1. Thus, pressure medium can enter through the opening 45 into the interior of the expandable tube 1. It can be seen that in the embodiment with closed welding of the expandable tube 1 and with an opening 45 in the weld 41 for the entry of the pressure medium, provided in other embodiments radial bores 17 in the sleeve 6 (FIG. Fig. 6 ) and the aligned bore in the wall of the expandable tube 1 ( Fig. 7 ) are dispensable.

Des Weiteren ist bei der Ausführungsform mit Öffnung 45 in der Verschweißung 41 am geschlossen, verschweißten Ende des aufweitbaren Rohres 1 der gewindefreie Bereich 15 in der hülsenartigen Muffe 7, der den Strömungsweg zu in radialen Bohrungen 17 frei gibt, entbehrlich.Furthermore, in the embodiment with opening 45 in the weld 41 at the closed, welded end of the expandable tube 1, the unthreaded region 15 in the sleeve-like sleeve 7, which releases the flow path to radial bores 17, dispensable.

In Fig. 23 ist in einer Darstellung ähnlich der Fig. 7 gezeigt, wie bei einem aufweitbaren Rohr 1 mit geschlossener Verschweißung durch eine Schweißnaht 41 mit Öffnung 45 ein Inflationsadapter 20 verwendet werden kann.In Fig. 23 is similar in a representation of the Fig. 7 shown as in an expandable tube 1 with closed welding by a weld 41 with opening 45, an inflation adapter 20 can be used.

In Fig. 24 ist geschlossene Verschweißung in der Ausührungsform von Fig. 23, mit wenigstens einer Öffnung 45 in der Schweißnaht 41, gezeigt.In Fig. 24 is closed welding in the embodiment of Fig. 23 , with at least one opening 45 in the weld 41, shown.

Die Fig. 25 zeigt, wie in die hülsenartige Muffe 7 bei einem geschlossen verschweißten Rohr 1 ein weiterer Bauteil eingeschraubt sein kann.The Fig. 25 shows how in the sleeve-like sleeve 7 in a closed-welded tube 1, a further component can be screwed.

In Fig. 26 ist gezeigt, wie zwei aufweitbare Rohre 1, die an ihren einander benachbarten Enden mit einer geschlossenen Verschweißung mit Schweißnaht 41, in der die wenigstens eine Öffnung 45 vorgesehen ist, durch die hülsenartige Muffe 7 miteinander sein können.In Fig. 26 It is shown how two expandable tubes 1, which can be at their adjacent ends with a closed weld with weld 41 in which the at least one opening 45 is provided, through the sleeve-like sleeve 7 with each other.

Auch in Fig. 26 ist erkennbar, dass bei der Ausführungsform einer Verschweißung mit wenigstens einer Öffnung 45 die gewindefreien Bereich, wie sie bei der Ausführungsform nach Fig. 9 und 10, im Falle einer geschlossenen Verschweißung der einander benachbarten Enden der aufweitbaren Rohre 1 erforderlich sind, entfallen können.Also in Fig. 26 It can be seen that in the embodiment of a weld with at least one opening 45, the unthreaded area, as in the embodiment according to FIGS. 9 and 10 , in the case of a closed welding of the adjacent ends of the expandable tubes 1 are required, can be omitted.

Die hülsenartige Muffe 7 weist an ihren beiden Enden zylinderförmige gewindefreie Abschnitte 47 auf, damit die Ringdichtungen 11 ihre Dichtwirkung gut erfüllen können. Zwischen den Gewinden in den Abschnitten 13, die gleichsinnige oder gegenläufige Gewinde sind, ist im Bereich der Mitte der hülsenartigen Muffe 7 ein gewindefreier Abschnitt 49 vorgesehen.The sleeve-like sleeve 7 has at its two ends cylindrical thread-free portions 47, so that the ring seals 11 can fulfill their sealing effect well. Between the threads in the sections 13, which are co-rotating or counter-rotating threads, a thread-free section 49 is in the region of the center of the sleeve-like sleeve 7 intended.

Zusammenfassend kann ein Ausführungsbeispiel der Erfindung wie folgt beschrieben werden.In summary, an embodiment of the invention can be described as follows.

Ein Reibrohranker besitzt ein unter der Wirkung eines Druckmittels aufweitbares Rohr 1, das an einer Hülse 6 befestigt ist. Die Hülse 6 ist in einen mit Gewinde versehenen Abschnitt 13 einer hülsenartigen Muffe 7 eingeschraubt und gegenüber der Innenseite des Abschnittes 13 durch eine Ringdichtung 11 abgedichtet. Die hülsenartigen Muffe 7 besitzt einen weiteren mit Gewinde versehenen Abschnitt 14, in dem wahlweise entweder ein weiteres aufweitbares Rohr 1, oder ein Inflationsadapter für das Einleiten des Druckmediums zum Aufweiten des Rohres 1, oder ein Befestigungsbolzen, beispielsweise ein Augbolzen, eingeschraubt werden kann.A Reibrohranker has an expandable under the action of a pressure medium tube 1, which is fixed to a sleeve 6. The sleeve 6 is screwed into a threaded portion 13 of a sleeve-like sleeve 7 and sealed from the inside of the portion 13 by a ring seal 11. The sleeve-like sleeve 7 has a further threaded portion 14, in which either either another expandable tube 1, or an inflation adapter for introducing the pressure medium for expanding the tube 1, or a fastening bolt, such as an eyebolt, can be screwed.

Claims (38)

  1. Friction tube anchor with an expandable tube (1), characterized in that the expandable tube (1) is connected to a casing (6), that there is a casing-like sleeve (7), that the casing (6) which is connected to the expandable tube (1) is inserted into the casing-like sleeve (7), and that the casing-like sleeve (7) in its section (14) which is opposite the section (13) which holds the casing (6) with the expandable tube (1) is set up to accommodate another component
  2. Anchor as claimed in claim 1, characterized in that the other component is a casing (6) which is connected to the expandable tube (1) of a friction tube anchor.
  3. Anchor as claimed in claim 1 or 2, characterized in that the end of the expandable tube (1), especially the ends of two expandable tubes (1) which are connected to the casings (6), are made in the manner of an open welding.
  4. Anchor as claimed in claim 1 or 2, characterized in that the end of the expandable tube (1), especially the ends of both expandable tubes (1) which are connected to the casings (6), are made in the manner off closed welding.
  5. Anchor as claimed in one of claims 1 to 4, characterized in that there is a region (15) with an enlarged diameter between the sections (13, 14) of the casing-like sleeve (7).
  6. Anchor as claimed in claim 5, characterized in that the region (15) of the casing-like sleeve (7) which is between the casings (6) which are connected to the expandable tubes (1) is made unthreaded.
  7. Anchor as claimed in one of claims 1 to 6, characterized in that in the casings (6) there are openings (17) which are radially oriented, and wherein in the ends of the expandable tubes (1) which are connected to the casings (6) there are holes flush with the openings (17).
  8. Anchor as claimed in one of claims 1 to 7, characterized in that there are internal threads in the sections (13, 14) of the casing-like sleeve (7).
  9. Anchor as claimed in one of claims 1 to 8, characterized in that in the sections (13, 14) of the casing-like sleeve (7) there are round threads, and that the casings (6) are provided with external round threads.
  10. Anchor as claimed in claim 9, characterized in that the external round thread of the casings (6) and those of the sleeve (7) are corresponding threads.
  11. Anchor as claimed in one of claims 8 to 1 characterized in that the threads in the sections (13, 14) are threads which run in the same direction or in opposite directions, namely a right-hand thread and a left-hand thread.
  12. Anchor as claimed in one of claims 1 to 11, characterized in that there is a seal (11) between the casing-like sleeve (7) and the at least one casing (6).
  13. Anchor as claimed in claim 12, characterized in that the seal is a ring packing (11) which is inserted into a groove of the casing (6), which groove is open to the outside.
  14. Anchor as claimed in claim 13, characterized in that the groove for accommodating the ring packing (11) is provided in the region of the end of the casing (6) facing away from the free end of the expandable tube (1).
  15. Anchor as claimed in one of claims 1 and 8 to 14, characterized in that an inflation adapter (20) for supplying the pressurized medium is inserted into the section (14) of the casing-like sleeve (7) which is opposite the section (13) of the casing-like sleeve (7) into which the casing (6) which is connected to the expandable tube (1) is inserted.
  16. Anchor as claimed in claim 15, characterized in that the inflation adapter (20) can be screwed into the region (14) of the casing-like sleeve (7).
  17. Anchor as claimed in claim 1, characterized in that the other component is a fastening bolt (22).
  18. Anchor as claimed in claim 17, characterized in that the casing (6) which is connected to the expandable tube (1) has an external thread which can be screwed into the internal thread in the section (13) of the casing-like sleeve (7).
  19. Anchor as claimed in claim 18, characterized in that the casing (6) externally has a round thread and the section (13) of the casing-like sleeve (7) has an internal round thread.
  20. Anchor as claimed in one of claims 17 to 19, characterized in that the section (14) or the casing-like sleeve (7) has a thread.
  21. Anchor as claimed in claim 20, characterized in that the threads in the region (13) and in the section (14) of the casing-like sleeve (7) are threads in the same direction or in opposite directions.
  22. Anchor as claimed in one of claims 17 to 21, characterized in that the casing (6) is sealed relative to the inside surface of the section (13) of the casing-like sleeve (7).
  23. Anchor as claimed in one of claims 17 to 22, characterized in that the region (15) between the sections (13 and 14) of the casing-like sleeve (7) is unthreaded.
  24. Anchor as claimed in one of claims 17 to 23, characterized in that the region (15) between the sections (13 and 14) of the casing-like sleeve (7) is made with an enlarged diameter.
  25. Anchor as claimed in claim 23 or 24, characterized in that the casing (6) with its end which lies within the casing-like sleeve (7) is located in the region (15).
  26. Anchor as claimed in one of claims 17 to 25, characterized in that the expandable tube (1) is connected to the casing (6).
  27. Anchor as claimed in claim 26, characterized in that the expandable tube (1) is welded to the casing (6).
  28. Anchor as claimed in one of claims 17 to 27, characterized in that the expandable tube (1) on its end which is connected to the casing (6) is made in the manner of an open welding.
  29. Anchor as claimed in one of claims 17 to 27, characterized in that the expandable tube (1) is connected to the casing (6) in the manner of a closed welding.
  30. Anchor as claimed in claim 29, characterized in that there is at least one radial hole (17) in the wall of the casing (6).
  31. Anchor as claimed in claim 30, characterized in that in the expandable tube (1) there is an opening which is flush with the hole (17) in the casing (6).
  32. Anchor as claimed in one of claims 20 to 31, characterized in that one of the threads in the regions (13 or 14) is a left-hand thread and the other thread is a right-hand thread.
  33. Anchor as claimed in one of claims 20 to 32, characterized in that the thread in the section (14) is a metric thread.
  34. Anchor as claimed in one of claims 1 to 33, characterized in that the weld (41) which closes the expandable tube (1) in the manner of a closed welding connects the expandable tube (1) to the casing (6).
  35. Anchor as claimed in one of claims 1 to 34, characterized in that the weld (41) of the closed welding of the expandable tube (1) is provided with at least one opening (45) which leads to the interior of the expandable tube (1).
  36. Anchor as claimed in one of claims 1 to 35, characterized in that the end of the inwardly pointed fold of the expandable tube (1) is closed.
  37. Anchor as claimed in claim 36, characterized in that the fold of the expandable tube (1) is closed by a plug.
  38. Anchor as claimed in claim 37, characterized in that the plug (43) is connected to the expandable tube (1).
EP07784595A 2006-08-17 2007-07-26 Friction bolt and expansion adaptor for said anchor Active EP1934404B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL07784595T PL1934404T3 (en) 2006-08-17 2007-07-26 Friction bolt and expansion adaptor for said anchor
SI200730956T SI1934404T1 (en) 2006-08-17 2007-07-26 Friction bolt and expansion adaptor for said anchor
CY20121100494T CY1112812T1 (en) 2006-08-17 2012-05-31 HARNESS HARNESS TUBE AND EXTENSION ADJUSTER FOR THIS HARM

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT13822006 2006-08-17
PCT/AT2007/000366 WO2008019409A1 (en) 2006-08-17 2007-07-26 Friction bolt and expansion adaptor for said anchor

Publications (2)

Publication Number Publication Date
EP1934404A1 EP1934404A1 (en) 2008-06-25
EP1934404B1 true EP1934404B1 (en) 2012-04-04

Family

ID=38658534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07784595A Active EP1934404B1 (en) 2006-08-17 2007-07-26 Friction bolt and expansion adaptor for said anchor

Country Status (22)

Country Link
US (1) US7891911B2 (en)
EP (1) EP1934404B1 (en)
JP (1) JP2010501046A (en)
KR (1) KR20090057167A (en)
CN (1) CN101346517B (en)
AT (2) AT9590U1 (en)
AU (1) AU2007284046B2 (en)
BR (1) BRPI0702907A2 (en)
CA (1) CA2631477C (en)
CL (1) CL2007002372A1 (en)
CY (1) CY1112812T1 (en)
DK (1) DK1934404T3 (en)
ES (1) ES2384401T3 (en)
HR (1) HRP20120508T1 (en)
NO (1) NO20080986L (en)
PL (1) PL1934404T3 (en)
PT (1) PT1934404E (en)
RS (1) RS52355B (en)
RU (1) RU2436961C2 (en)
SI (1) SI1934404T1 (en)
WO (1) WO2008019409A1 (en)
ZA (1) ZA200803753B (en)

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JP5766565B2 (en) * 2011-09-20 2015-08-19 株式会社大林組 Reinforcing material bag restraint, and ground reinforcing method using the same
KR101231875B1 (en) * 2012-04-18 2013-02-08 주식회사 티에스테크노 Rockbolt and hydraulic pressure apparatus using the same
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CN108442954B (en) * 2018-03-12 2019-10-15 中国矿业大学 A kind of deep anchoring pressure-type can connect pressure-relieving achor bar and application method
CL2020002727A1 (en) * 2020-10-21 2020-12-28 Terrainnova Spa Bolting system comprising two nuts and a bar, where the second nut is partially unscrewed from the first, compressing an external material.
CN112411617B (en) * 2020-11-23 2022-03-18 安徽华盛国际建筑设计工程咨询有限公司 Vertical soil retaining structure and construction method thereof
CN113266006A (en) * 2021-05-25 2021-08-17 宜宾学院 Basalt fiber prestressed anchor cable component and anchoring system thereof
RU207877U1 (en) * 2021-07-26 2021-11-22 Виталий Юрьевич Лузин FRICTIONAL HYDRAULIC TUBE ANCHOR
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Also Published As

Publication number Publication date
AT9590U1 (en) 2007-12-15
CN101346517B (en) 2011-06-08
PL1934404T3 (en) 2012-09-28
ATE552382T1 (en) 2012-04-15
KR20090057167A (en) 2009-06-04
CN101346517A (en) 2009-01-14
SI1934404T1 (en) 2012-08-31
ES2384401T3 (en) 2012-07-04
CA2631477C (en) 2012-12-18
ZA200803753B (en) 2009-11-25
US20090035071A1 (en) 2009-02-05
BRPI0702907A2 (en) 2011-03-22
DK1934404T3 (en) 2012-07-16
JP2010501046A (en) 2010-01-14
RS52355B (en) 2012-12-31
HRP20120508T1 (en) 2012-07-31
EP1934404A1 (en) 2008-06-25
AU2007284046B2 (en) 2013-02-14
WO2008019409A1 (en) 2008-02-21
CL2007002372A1 (en) 2008-02-08
PT1934404E (en) 2012-06-06
NO20080986L (en) 2009-03-16
CA2631477A1 (en) 2008-02-21
RU2008114519A (en) 2009-10-20
US7891911B2 (en) 2011-02-22
CY1112812T1 (en) 2016-02-10
AU2007284046A1 (en) 2008-02-21
RU2436961C2 (en) 2011-12-20

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