Rock bolt

Details Rock bolt Rock bolt

E - Fixed Constructions

21

D

E21D 21/00 (2006.01)

Patent

CA 2543893

A rock bolt (10) which includes an elongate tubular member (18) which is formed with an inlet (22) through which a pressurized fluid can pass, into an interior of the tubular member (18), thereby to expand the tubular member (18) in a radial direction, an elongate shank (12) with a first end (14) which is secured to the tubular member (18) and a second end (16), and an expansion unit (26) which has a wedge-shaped member (44) at the second end (16) of the shank (12).

L'invention porte sur un boulon d'ancrage (10) comportant: un élément tubulaire allongé (18) présentant un orifice (22) par lequel on introduit un liquide sous pression pour dilater radialement l'élément tubulaire (18); et une tige allongée (12) dont une première extrémité (14) est reliée à l'élément tubulaire (18) et la deuxième extrémité (16) est reliée à une unité d'expansion (26) munie d'un élément en forme de coin (44).

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