EP2687673A2 - Protective device for (rock) bolts and friction bolts - Google Patents
Protective device for (rock) bolts and friction bolts Download PDFInfo
- Publication number
- EP2687673A2 EP2687673A2 EP13004781.4A EP13004781A EP2687673A2 EP 2687673 A2 EP2687673 A2 EP 2687673A2 EP 13004781 A EP13004781 A EP 13004781A EP 2687673 A2 EP2687673 A2 EP 2687673A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- anchor
- protective device
- conical body
- armature
- 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- Withdrawn
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 45
- 239000011435 rock Substances 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 229910000746 Structural steel Inorganic materials 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 239000011253 protective coating Substances 0.000 description 3
- 241000209035 Ilex Species 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0013—Protection against corrosion
-
- 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
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
-
- 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
- E21D21/004—Bolts held in the borehole by friction all along their length, without additional fixing means
Definitions
- the invention relates to a protective device for (mountain) anchor, in particular for Reibrohranker, and a Reibrohranker.
- Anchors of the genus considered here are used to consolidate and hold underground, for which the anchors are fixed in the ground.
- Such anchors are for example Reibrohranker.
- Friction anchors are rock anchors that have a longitudinally inwardly folded tube that is inserted into a pre-drilled hole and expanded by increasing the pressure inside the folded tube so that the outer surface of the tube abuts the inner surface of the well Anchor so anchors in the hole.
- the invention has for its object to remedy this situation.
- the object underlying the invention is achieved with a combination of a protective device and an armature with the features of the independent, directed to the combination claim.
- the invention also extends to a Reibrohranker with the features of independent claim 21.
- the protective device according to the invention results in the protection of a coating applied to an armature, in particular a friction tube armature, which protects it against corrosion.
- the protective device according to the invention can be attached to the (front) end of the armature, i. be plugged on this.
- the plate of the protective device comes into abutment against the reinforcing steel grid or at the mouth of the predrilled hole, so that the device according to the invention can not slip through the grille or into the hole.
- the protective device according to the invention is held in the region of the open end of the predrilled hole or a structural steel grate arranged there, so that adverse direct contact between the armature and the mouth of the predrilled hole or a steel mesh grille provided there is prevented ,
- the sleeve of the protective device according to the invention may be connected to a front end of the armature, in particular a Reibrohrankers, attached conical body by a predetermined breaking point.
- This conical body facilitates the insertion of the armature in a predrilled hole, whereby, as soon as the plate of the protective device according to the invention impinges on the mouth of the borehole or a structural steel grille provided there, breaks the predetermined breaking point, so that the anchor then, protected from damage to its anti-corrosive coating, by the remaining in the mouth of the wellbore protection device, in particular by the sleeve, slides when it is inserted into the wellbore.
- the sleeve of the device according to the invention has a plate known per se anchor plate.
- the device according to the invention simultaneously serves to attach an anchor plate to the anchor.
- the sleeve of the protective device according to the invention with a conical, at the front end (the end, with which the anchor is inserted into a pre-drilled hole) arranged body via a predetermined breaking point.
- connection between sleeve and anchor plate can be made, for example, by gluing, by vulcanization or mechanically, e.g. by a snap connection, done what it allows, for example, the sleeve made of soft elastic plastic and the anchor plate made of metal (steel).
- the sleeve has a clear width which substantially corresponds to the outer diameter of the armature. This makes it possible to choose the dimensions of the sleeve and the elasticity of the material of the sleeve so that the sleeve is frictionally seated on the anchor, so not by itself, for example, under its own weight, can slip along the armature, but that the sleeve only is displaced along the armature by the forces occurring during insertion of the armature into the pre-drilled hole (the sleeve with its plate stops and the armature moves through it).
- the protective device optionally together with a conical body, on the front (first inserted into the predrilled hole) end of the anchor plugged.
- the anchor possibly with the help of a built-in machine, pushed into the pre-drilled hole.
- the armature is moved through the sleeve and held at a distance from the mouth of the borehole or from a Baustahlgitter arranged there. This movement occurs as soon as the protective device rests with its plate at the outer end of the hole, for example, at least one Baustahlgitter provided there.
- the three aforesaid components are considered as separate (three) components or in another embodiment wherein two of the three components are integrally formed with each other (as a common component) and the third component is a separate one Component is to use.
- the armature 2 of a friction tube anchor which has a coating which protects against corrosion on the outside, is inserted with its front end into a protective device 1.
- the protective device 1 has a sleeve 3 and a plate 4 which is substantially perpendicular to it.
- the plate 4 is rectangular in the illustrated embodiment, but may have any other shape, such as a round, in particular circular shape. Other possible embodiments of the plate 4 are square or star-shaped.
- the dimensions of the sleeve 3 of the protective device 1 are chosen so that it sits under elastic deformation frictionally on the anchor 2, so it can not slide down, even if the anchor 2 obliquely or vertically upwards (or down) are inserted into a predrilled hole should.
- Fig. 1 It is also shown that the protective device 1 rests on its plate 4 on a reinforcing steel mesh 11, so that the protective device 1 during insertion of the armature 2, on which an anchor plate 12 may already be mounted, in the region of the structural steel grid 11, that is substantially in the region of the mouth of the predrilled hole into which the armature 2 is to be inserted, remains.
- the anchor 2 can not rub against the reinforcing steel mesh 11 and its coating, which protects it from corrosion, is not damaged when the anchor 2, for example by means of a built-in machine (not shown), inserted into the pre-drilled hole becomes.
- the plate of the protection device 1 is at the same time an anchor plate 12, wherein in the in Fig. 2
- the sleeve 3 of the protective device is connected by means of a snap connection 7 with the anchor plate 12 by being inserted through the hole in the anchor plate 12.
- the snap device 7 comprises a, in particular integrally formed with the sleeve 3, flange 8, which rests on the outside of the anchor plate 12 and at least one, but preferably a plurality of projections 9, which may be wedge-shaped and in this case in the direction of the Expand flange 8.
- the protrusion 9 arranged on the outside of the sleeve 3 may be, for example, an annular rib.
- the protective device 1 is connected via its sleeve 3 with a conical body 20 arranged in the front end of an armature 2, that is to say the end with which the armature 2 is pushed into a predrilled hole.
- the connection between the sleeve 3, the device 1 and the conical body 20 is formed as a predetermined breaking point 22, so that, as in Fig. 4 shown, the protective device 1 is separated from the conical body 20 (by breaking the predetermined breaking point 22), as soon as the plate 4 of the protective device (or the anchor plate 12, if it is an embodiment according to Fig. 2 acts) on the mouth of a predrilled hole or a steel grille 11 provided there impinges.
- the conical body 20 is received via a neck (neck) 24 with radially projecting stabilizing flanges (Zentrierlamellen) 26 inside the front end of the armature 2.
- the conical body 20 including its neck 24 is hollow to reduce the mass of the material. Reducing the mass of the conical body 20 is advantageous when it is injection molded together with the protective device 1 made of plastic.
- a pipe section 34 is provided between the front end of the armature 2 and the sleeve 3 of the protective device 1. This pipe section 34 is part of the armature. 2
- FIG. 5 and 6 Such an embodiment is in Fig. 5 and 6 shown, for the sake of clarity, both the conical body 20 and the anchor plate 12 are shown in section.
- the conical body 20 is hollow and can be plugged with its cylindrical part 21 together with the connected thereto via a predetermined breaking point 22 sleeve 3 on the front end of an armature 2, in particular a Reibrohrankers.
- the anchor plate 12 is connected to the sleeve 3 of the protective device 1 by a snap connection 7, similar to that in FIG Fig. 2 shown embodiment.
- the plate 4 of the protective device 1 with its sleeve 3 in one piece form ( Fig. 3 and 4 ).
- connection between anchor plate 12 and sleeve 3 of the protective device 1 according to the invention as an alternative to the in Fig. 2 shown embodiment can be made with a snap connection 7 by gluing or vulcanization or the like of the sleeve 3 to the anchor plate 12 made of metal.
- a protective device 1 is attached to the front, first inserted into the wellbore end of the armature 2.
- the protective device 1 comprises a sleeve 3 which sits frictionally on the armature 2 and a plate 4, which comes when inserting the armature 2 in abutment against the mouth of the borehole or there provided a steel grating 11.
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- 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)
- Dowels (AREA)
Abstract
Description
Die Erfindung betrifft eine Schutzvorrichtung für (Gebirgs-)Anker, insbesondere für Reibrohranker, und einen Reibrohranker.The invention relates to a protective device for (mountain) anchor, in particular for Reibrohranker, and a Reibrohranker.
Anker der hier in Betracht gezogenen Gattung dienen dazu, Untergrund zu festigen und zu halten, wozu die Anker im Untergrund festgelegt werden. Solche Anker sind beispielsweise Reibrohranker.Anchors of the genus considered here are used to consolidate and hold underground, for which the anchors are fixed in the ground. Such anchors are for example Reibrohranker.
Reibrohranker sind Gebirgsanker (Felsanker), die ein in Längsrichtung nach innen gefaltetes Rohr aufweisen, das in ein vorgebohrtes Loch 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 pre-drilled hole and expanded by increasing the pressure inside the folded tube so that the outer surface of the tube abuts the inner surface of the well Anchor so anchors in the hole.
Derartige Reibrohranker (Markenbezeichnung der Atlas Copco: "Swellex") sind bekannt. Beispielsweise kann auf die
Problematisch beim Setzen bekannter Anker (Einbringen des Ankers in ein vorgebohrtes Loch), insbesondere bei Reibrohrankern, ist es, dass eine an ihrer Außenseite angebrachte, den Anker vor Korrosion schützende Beschichtung beim Einschieben des Ankers in ein vorgebohrtes Loch beim Eintritt in das vorgebohrte Loch beschädigt werden kann. Dies gilt ganz besonders für an dem offenen Ende ("Mündung") des vorgebohrten Loches angeordnete Baustahlgitter (eine oder mehrere Lagen), die oft dazu führen, dass die Korrosionsschutzschicht beim Einschieben des Ankers (Reibrohrankers) durch Entlangreiben an dem wenigstens einen Baustahlgitter beschädigt wird.A problem when setting known anchor (insertion of the anchor in a predrilled hole), especially in Reibrohrankern, it is that a mounted on its outside, the anchor corrosion-protective coating on insertion of the anchor in a predrilled hole on entering the pre-drilled hole damaged can be. This is particularly true for at the open end ("mouth") of the predrilled hole arranged Baustahlgitter (one or more layers), which often cause the corrosion protection layer upon insertion of the armature (Reibrohrankers) is damaged by slipping on the at least one Baustahlgitter ,
Der Erfindung liegt die Aufgabe zugrunde, hier Abhilfe zu schaffen.The invention has for its object to remedy this situation.
Gelöst wird diese Aufgabe erfindungsgemäß mit einer Schutzvorrichtung, welche die Merkmale von Anspruch 1 aufweist.This object is achieved according to the invention with a protective device having the features of claim 1.
Des Weiteren wird die der Erfindung zugrunde liegende Aufgabe gelöst mit einer Kombination aus einer Schutzvorrichtung und einem Anker mit den Merkmalen des unabhängigen, auf die Kombination gerichteten Anspruches.Furthermore, the object underlying the invention is achieved with a combination of a protective device and an armature with the features of the independent, directed to the combination claim.
Schließlich wird die der Erfindung zugrunde liegende Aufgabe mit einer Verwendung einer erfindungsgemäßen Schutzvorrichtung oder einer erfindungsgemäßen Kombination mit den Merkmalen des auf die Verwendung gerichteten Anspruches 14 gelöst.Finally, the object underlying the invention with a use of a protective device according to the invention or a combination according to the invention with the Characteristics of the claim directed to the use of 14 solved.
Die Erfindung erstreckt sich auch auf einen Reibrohranker mit den Merkmalen des unabhängigen Patentanspruch 21.The invention also extends to a Reibrohranker with the features of
Bevorzugte und vorteilhafte Ausgestaltungen der erfindungsgemäßen Schutzvorrichtung, der erfindungsgemäßen Kombination, der erfindungsgemäßen Verwendung und des erfindungsgemäßen Reibrohrankers sind Gegenstand der Unteransprüche.Preferred and advantageous embodiments of the protective device according to the invention, the combination according to the invention, the use according to the invention and the friction tube anchor according to the invention are the subject matter of the subclaims.
Durch die erfindungsgemäße Schutzvorrichtung ergibt sich ein Schutz einer auf einem Anker, insbesondere einem Reibrohranker, aufgebrachten, diesen vor Korrosion schützenden Beschichtung. Dabei kann die erfindungsgemäße Schutzvorrichtung an dem (vorderen) Ende des Anker angebracht, d.h. auf diesen aufgesteckt, werden. Sobald das vordere, also zuerst in das vorgebohrte Loch einzuführende Ende des Ankers das offene Ende des Loches bzw. ein dort angebrachtes Baustahlgitter erreicht, gelangt die Platte der Schutzvorrichtung in Anlage an das Baustahlgitter bzw. an die Mündung des vorgebohrten Loches, sodass die erfindungsgemäße Vorrichtung nicht durch das Gitter oder in das Loch rutschen kann. Während des gesamten Einbauvorganges (Einführen des Ankers) wird die erfindungsgemäße Schutzvorrichtung im Bereich des offenen Endes des vorgebohrten Loches bzw. eines dort angeordneten Baustahlgitters gehalten, sodass ein nachteiliger unmittelbarer Kontakt zwischen Anker und der Mündung des vorgebohrten Loches bzw. einem dort vorgesehenen Baustahlgitter verhindert wird.The protective device according to the invention results in the protection of a coating applied to an armature, in particular a friction tube armature, which protects it against corrosion. In this case, the protective device according to the invention can be attached to the (front) end of the armature, i. be plugged on this. As soon as the front end of the anchor to be introduced into the predrilled hole reaches the open end of the hole or a structural steel grid attached thereto, the plate of the protective device comes into abutment against the reinforcing steel grid or at the mouth of the predrilled hole, so that the device according to the invention can not slip through the grille or into the hole. During the entire installation process (insertion of the armature), the protective device according to the invention is held in the region of the open end of the predrilled hole or a structural steel grate arranged there, so that adverse direct contact between the armature and the mouth of the predrilled hole or a steel mesh grille provided there is prevented ,
In einer Ausführungsform kann die Hülse der erfindungsgemäßen Schutzvorrichtung mit einem an vorderen Ende des Ankers, insbesondere eines Reibrohrankers, angebrachten, konischen Körper durch eine Sollbruchstelle verbunden sein. Dieser konische Körper erleichtert das Einschieben des Ankers in ein vorgebohrtes Loch, wobei, sobald die Platte der erfindungsgemäßen Schutzvorrichtung an der Mündung des Bohrloches oder einem dort vorgesehenen Baustahlgitter auftrifft, die Sollbruchstelle bricht, sodass der Anker dann, vor Beschädigungen seiner korrosionsschützenden Beschichtung geschützt, durch die im Bereich der Mündung des Bohrloches verbleibende Schutzvorrichtung, insbesondere durch deren Hülse, gleitet, wenn er in das Bohrloch eingeschoben wird.In one embodiment, the sleeve of the protective device according to the invention may be connected to a front end of the armature, in particular a Reibrohrankers, attached conical body by a predetermined breaking point. This conical body facilitates the insertion of the armature in a predrilled hole, whereby, as soon as the plate of the protective device according to the invention impinges on the mouth of the borehole or a structural steel grille provided there, breaks the predetermined breaking point, so that the anchor then, protected from damage to its anti-corrosive coating, by the remaining in the mouth of the wellbore protection device, in particular by the sleeve, slides when it is inserted into the wellbore.
In einer Ausführungsform kann vorgesehen sein, dass die Hülse der erfindungsgemäßen Vorrichtung als Platte eine an sich bekannte Ankerplatte aufweist. Bei dieser Ausführungsform dient die erfindungsgemäße Vorrichtung gleichzeitig dazu, am Anker eine Ankerplatte anzubringen.In one embodiment it can be provided that the sleeve of the device according to the invention has a plate known per se anchor plate. In this embodiment, the device according to the invention simultaneously serves to attach an anchor plate to the anchor.
Auch bei dieser Ausführungsform kann die Hülse der erfindungsgemäßen Schutzvorrichtung mit einem konischen, am vorderen Ende (das Ende, mit dem voran der Anker in ein vorgebohrtes Loch eingeführt wird) angeordneten Körper über eine Sollbruchstelle verbunden sein.Also in this embodiment, the sleeve of the protective device according to the invention with a conical, at the front end (the end, with which the anchor is inserted into a pre-drilled hole) arranged body via a predetermined breaking point.
Die Verbindung zwischen Hülse und Ankerplatte kann beispielsweise durch Kleben, durch Aufvulkanisieren oder mechanisch, z.B. durch eine Schnappverbindung, erfolgen, was es beispielsweise erlaubt, die Hülse aus weichelastischem Kunststoff und die Ankerplatte aus Metall (Stahl) herzustellen.The connection between sleeve and anchor plate can be made, for example, by gluing, by vulcanization or mechanically, e.g. by a snap connection, done what it allows, for example, the sleeve made of soft elastic plastic and the anchor plate made of metal (steel).
Insoweit die erfindungsgemäße Kombination aus einer Schutzvorrichtung und einem Anker betroffen ist, ist bevorzugt, dass die Hülse eine lichte Weite aufweist, die dem Außendurchmesser des Ankers im Wesentlichen entspricht. Dies erlaubt es, die Abmessungen der Hülse und die Elastizität des Werkstoffes der Hülse so zu wählen, dass die Hülse mit Reibschluss am Anker sitzt, also nicht von sich aus, beispielsweise unter ihrem Eigengewicht, entlang des Ankers verrutschen kann, sondern dass die Hülse nur durch die beim Einführen des Ankers in das vorgebohrte Loch auftretenden Kräfte entlang des Ankers verschoben wird (die Hülse mit ihrer Platte bleibt still stehen und der Anker bewegt sich durch diese hindurch).Insofar as the combination of a protective device and an armature according to the invention is concerned, it is preferred that the sleeve has a clear width which substantially corresponds to the outer diameter of the armature. This makes it possible to choose the dimensions of the sleeve and the elasticity of the material of the sleeve so that the sleeve is frictionally seated on the anchor, so not by itself, for example, under its own weight, can slip along the armature, but that the sleeve only is displaced along the armature by the forces occurring during insertion of the armature into the pre-drilled hole (the sleeve with its plate stops and the armature moves through it).
Bei der Verwendung einer Schutzvorrichtung oder einer Kombination gemäß der Erfindung kann gemäß einem Vorschlag der Erfindung wie folgt vorgegangen werden:When using a protective device or a combination according to the invention, it is possible according to a proposal of the invention to proceed as follows:
Zunächst wird die Schutzvorrichtung, gegebenenfalls zusammen mit einem konischen Körper, auf das vordere (zuerst in das vorgebohrte Loch einzuführende) Ende des Ankers aufgesteckt. Darauf wird der Anker, gegebenenfalls mit Hilfe einer Einbaumaschine, in das vorgebohrte Loch geschoben. Beim Einschieben des Ankers in das Loch wird der Anker durch die Hülse bewegt und dabei im Abstand von der Mündung des Bohrloches bzw. von einem dort angeordneten Baustahlgitter gehalten. Diese Bewegung tritt auf, sobald die Schutzvorrichtung mit ihrer Platte am äußeren Ende des Loches, beispielsweise wenigstens einem dort vorgesehenen Baustahlgitter anliegt.First, the protective device, optionally together with a conical body, on the front (first inserted into the predrilled hole) end of the anchor plugged. Then the anchor, possibly with the help of a built-in machine, pushed into the pre-drilled hole. When inserting the anchor into the hole, the armature is moved through the sleeve and held at a distance from the mouth of the borehole or from a Baustahlgitter arranged there. This movement occurs as soon as the protective device rests with its plate at the outer end of the hole, for example, at least one Baustahlgitter provided there.
In Betracht gezogen sind Ausführungsformen bei welchen die Bestandteile
- konischer Körper,
- Hülse der Schutzvorrichtung und
- Platte der Schutzvorrichtung
- conical body,
- Sleeve of the fender and
- Plate of the fender
Zusätzlich ist in Betracht gezogen, die drei vorgenannten Bestandteile in einer Ausführungsform als voneinander getrennte (drei) Bauteile oder in einer anderen Ausführungsform, bei der zwei der drei genannten Bestandteile miteinander einstückig (als ein gemeinsamer Bauteil) ausgebildet sind, und der dritte Bestandteil ein gesonderter Bauteil ist, zu verwenden.In addition, it is contemplated that in one embodiment the three aforesaid components are considered as separate (three) components or in another embodiment wherein two of the three components are integrally formed with each other (as a common component) and the third component is a separate one Component is to use.
Weitere Einzelheiten und Merkmale der Erfindung ergeben sich aus der nachstehenden Beschreibung bevorzugter Ausführungsbeispiele anhand der Zeichnungen. Es zeigt:
- Fig. 1
- in Schrägansicht einen Anker mit Ankerplatte und einer Schutzvorrichtung,
- Fig. 2
- eine Ausführungsform der Schutzvorrichtung, bei welcher die Hülse mit einer Ankerplatte kombiniert ist,
- Fig. 3
- eine Schutzvorrichtung, die mit einem am vorderen Ende des Ankers vorgesehenen, konischen Körper über eine Sollbruchstelle verbunden ist,
- Fig. 4
- die Schutzvorrichtung, nachdem sie von dem konischen Körper beim Einschieben des Ankers getrennt ist,
- Fig. 5
- im Schnitt eine andere Ausführungsform der Schutzvorrichtung mit konischem Körper und
- Fig. 6
- die Ausführungsform von
Fig. 5 (geschnitten) in Schrägansicht.
- Fig. 1
- an oblique view of an anchor with anchor plate and a protective device,
- Fig. 2
- an embodiment of the protective device, in which the sleeve is combined with an anchor plate,
- Fig. 3
- a protective device connected to a conical body provided at the front end of the armature via a predetermined breaking point,
- Fig. 4
- the protective device, after it is separated from the conical body during insertion of the anchor,
- Fig. 5
- in section, another embodiment of the protective device with conical body and
- Fig. 6
- the embodiment of
Fig. 5 (cut) in an oblique view.
Bei der in
Die Abmessungen der Hülse 3 der Schutzvorrichtung 1 sind so gewählt, dass diese unter elastischem Verformen reibschlüssig am Anker 2 sitzt, also von diesem nicht herabrutschen kann, auch wenn der Anker 2 schräg oder lotrecht nach oben (oder unten) in ein vorgebohrtes Loch eingeschoben werden soll.The dimensions of the
In
So wird erreicht, dass der Anker 2 an dem Baustahlgitter 11 nicht entlang reiben kann und seine Beschichtung, die ihn vor Korrosion schützt, nicht beschädigt wird, wenn der Anker 2, beispielsweise mit Hilfe einer Einbaumaschine (nicht gezeigt), in das vorgebohrte Loch eingeschoben wird.Thus, it is achieved that the
Der Werkstoff der Schutzvorrichtung 1, die im gezeigten Ausführungsbeispiel einstückig aus Hülse 3 und Platte 4 besteht, ist insbesondere ein Kunststoff, der eine Elastizität besitzt, die es erlaubt, dass die Hülse 3, deren Innendurchmesser im Wesentlichen dem Außendurchmesser des Ankers 2 entspricht, unter Federwirkung des Kunststoffs (Elastizität) auf dem Anker 2 so fest sitzt, sodass die Schutzvorrichtung 1 nicht von selbst (unter ihrem Eigengewicht) am Anker 2 entlang rutschen kann. Dies auch, wenn der Anker 2 anders als in einer horizontalen Lage in ein vorgebohrtes Loch eingebaut wird.The material of the protective device 1, which consists in the embodiment shown in one piece of
Bei der in
Bei der in den
Der konische Körper 20 ist über einen Ansatz (Hals) 24 mit radial abstehenden Stabilisierungsflanschen (Zentrierlamellen) 26 im Inneren des vorderen Endes des Ankers 2 aufgenommen.The
Aus den
Bei der in den
Wie weiter oben angedeutet, kann die Ausführungsform gemäß
Eine solche Ausführungsform ist in
Aus
Hinzuweisen ist noch darauf, dass die Verbindung zwischen Ankerplatte 12 und Hülse 3 der erfindungsgemäßen Schutzvorrichtung 1 als Alternative zu der in
Zusammenfassend kann ein Ausführungsbeispiel der Erfindung wie folgt beschrieben werden:In summary, an embodiment of the invention can be described as follows:
Um die einen Anker 2 vor Korrosion schützende Beschichtung vor Beschädigung zu schützen, wenn der Anker 2 in ein vorgebohrtes Loch eingeschoben wird, wird auf das vordere, zuerst in das Bohrloch einzuschiebende Ende des Ankers 2 eine Schutzvorrichtung 1 aufgesteckt. Die Schutzvorrichtung 1 umfasst eine Hülse 3, die reibschlüssig am Anker 2 sitzt und eine Platte 4, die beim Einschieben des Ankers 2 in Anlage an die Mündung des Bohrlochs oder ein dort vorgesehenes Baustahlgitter 11 gelangt. So wird die Außenseite des Ankers 2, auf der die vor Korrosion schützende Beschichtung angebracht ist, vor Berührung mit der Mündung des Bohrloches bzw. mit dort vorgesehenem Baustahlgitter 11 geschützt und kann nicht beschädigt werden, wenn der Anker 2 eingeschoben wird.In order to protect the
Claims (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT1232011 | 2011-01-31 | ||
EP11788008.8A EP2670952A2 (en) | 2011-01-31 | 2011-10-17 | Protective device for (rock) bolts and friction bolts |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11788008.8A Division EP2670952A2 (en) | 2011-01-31 | 2011-10-17 | Protective device for (rock) bolts and friction bolts |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2687673A2 true EP2687673A2 (en) | 2014-01-22 |
Family
ID=45044215
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11788008.8A Withdrawn EP2670952A2 (en) | 2011-01-31 | 2011-10-17 | Protective device for (rock) bolts and friction bolts |
EP13004781.4A Withdrawn EP2687673A2 (en) | 2011-01-31 | 2011-10-17 | Protective device for (rock) bolts and friction bolts |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11788008.8A Withdrawn EP2670952A2 (en) | 2011-01-31 | 2011-10-17 | Protective device for (rock) bolts and friction bolts |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP2670952A2 (en) |
AT (1) | AT13228U1 (en) |
WO (1) | WO2012103561A2 (en) |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
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SE427764B (en) | 1979-03-09 | 1983-05-02 | Atlas Copco Ab | MOUNTAIN CULTURAL PROCEDURES REALLY RUCH MOUNTED MOUNTAIN |
AT373976B (en) * | 1979-12-13 | 1984-03-12 | Vorspann Technik Gmbh | METHOD AND ANCHOR FOR PRODUCING SOLE ANCHORINGS |
US4400113A (en) * | 1980-06-13 | 1983-08-23 | Ingersol-Rand Company | Friction rock stabilizer and a method of isolating the same from a bore surface |
DE8311672U1 (en) * | 1983-04-20 | 1983-11-03 | Bochumer Eisenhütte Heintzmann GmbH & Co KG, 4630 Bochum | Mountain anchor |
DE3712463A1 (en) * | 1987-04-13 | 1988-10-27 | Hilti Ag | FASTENING ON CAVITY SUBSTRATE |
DE3902727A1 (en) * | 1989-01-31 | 1990-08-02 | Willich F Gmbh & Co | Glass-fibre-reinforced, resin-bedded roof bolt |
JP3377720B2 (en) * | 1997-06-10 | 2003-02-17 | 飛島建設株式会社 | Upward ground anchor and construction method |
JP4107717B2 (en) * | 1998-06-19 | 2008-06-25 | 株式会社ケー・エフ・シー | Pipe type lock bolt |
CA2444666A1 (en) * | 2001-04-20 | 2002-10-31 | Matthew David Mclaren | Inserter and cap |
SI1546508T1 (en) * | 2002-08-02 | 2011-05-31 | Dywidag Systems Internat Pty Ltd | Rock bolt post grouting apparatus |
KR101153760B1 (en) | 2004-01-28 | 2012-06-13 | 케이에프씨 가부시키가이샤 | Expandable injection bolt and grouting method using same |
WO2005119009A1 (en) | 2004-06-01 | 2005-12-15 | David Charles Tyrer | Expandable rock anchor |
AT501441A3 (en) | 2004-12-23 | 2009-12-15 | Atlas Copco Mai Gmbh | METHOD FOR SETTING MOUNTAIN ANCHORS AND ATTACHABLE POOL ANCHORS USING THIS METHOD |
AT9590U1 (en) | 2006-08-17 | 2007-12-15 | Atlas Copco Mai Gmbh | RUBBER TANK AND INFLATION ADAPTER FOR THESE |
AT504132B1 (en) | 2007-02-01 | 2008-03-15 | Atlas Copco Mai Gmbh | Mixing element for tie bolt, has teeth which protrude from end face of tie bolt in axial direction and tie bolt is fixed on drill hole by adhesive or mortar |
TWM329069U (en) * | 2007-07-05 | 2008-03-21 | Hsi-Huan Lu | Structure of insulator of ground anchor anticorrosion insulating device |
DE102008014700A1 (en) * | 2008-03-18 | 2009-09-24 | Dywidag-Systems International Gmbh | Corrosion-protected self-drilling anchor and method for its production |
DE102010004926A1 (en) * | 2009-05-20 | 2010-11-25 | Minova International Ltd., Chesterfield | Mountain anchor (Klebanker) with separate mixing and discharge head |
-
2011
- 2011-01-31 AT ATGM8106/2011U patent/AT13228U1/en not_active IP Right Cessation
- 2011-10-17 EP EP11788008.8A patent/EP2670952A2/en not_active Withdrawn
- 2011-10-17 WO PCT/AT2011/000430 patent/WO2012103561A2/en active Application Filing
- 2011-10-17 EP EP13004781.4A patent/EP2687673A2/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
AT13228U1 (en) | 2013-08-15 |
EP2670952A2 (en) | 2013-12-11 |
WO2012103561A3 (en) | 2013-03-21 |
WO2012103561A2 (en) | 2012-08-09 |
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