E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
E21D 21/00 (2006.01)
Patent
CA 2715794
The invention relates to a sliding bolt (10) for introducing into a bore, having an anchor rod (12), on which is disposed a sliding control element (14) with a through--opening (18), through which the anchor rod (12) extends, wherein the sliding control element (14) comprises a sliding body cage (16) having at least one recess (20) for receiving a sliding body (22) that is in contact with the lateral surface of the anchor rod (12), and having an anchor plate (24), which is intended to lie against a region surrounding the mouth of the bore once the sliding bolt (10) has been introduced into the bore. In contrast to conventional sliding bolts, the anchor plate (24) is in load-transferring connection with the sliding body cage (16), with the result that it is easily possible to provide a device that indicates a sliding path of the sliding bolt that is still available.
L'invention concerne un ancrage coulissant (10) à introduire dans un forage, comportant : une barre d'ancrage (12), sur laquelle est disposé un élément de commande coulissant (14) pourvu d'une ouverture de passage (18) à travers laquelle s'étend la barre d'ancrage (12), sachant que l'élément de commande coulissant (14) comprend une cage (16) de corps coulissant pourvue d'au moins un évidement (20) pour recevoir un corps coulissant (22) qui se trouve en contact avec la surface périphérique de la barre d'ancrage (12) ; et une plaque d'ancrage (24), destinée à s'appuyer sur une zone entourant l'embouchure du forage lorsque l'ancrage coulissant (10) a été introduit dans le forage. A la différence des ancrages coulissants classiques, la plaque d'ancrage (24) se trouve en liaison de transmission de force avec la cage (16) de corps coulissant, de sorte qu'on peut prévoir d'une manière simple un dispositif indiquant la course de coulissement encore disponible de l'ancrage coulissant.
Charette Francois
Meidl Michael
Atlas Copco Mai Gmbh
Oyen Wiggs Green & Mutala Llp
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