E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
61/47
E21D 20/00 (2006.01) E21D 20/02 (2006.01)
Patent
CA 1183697
ABSTRACT OF THE DISCLOSURE A method of installing solder bolts in rock bolting, according to which method a bolt is fed into a hole drilled in the rock and is anchored in the hole during hardening of a soldering material. The bolt is bent during feeding into the hole in order to produce in the bolt at least one such bend that the bolt, when entirely inserted in the hole, is wedged in between opposite walls of the hole. A bolt feeding apparatus for carrying out the method includes a feed beam, a feeding device supported by said beam for feeding a rock bolt into a drill hole, a displacing device for displacing the feeding device along the feed beam, and a rock support for supporting the feed beam on the rock. The apparatus is provided with guiding means which, as he feeding device is moved along the feed beam, displace the feeding device away from a bolt feeding position co- axial with the axis of the drill hole and return the feeding device back to said feeding position.
413682
Oy Tampella Ab
Swabey Ogilvy Renault
LandOfFree
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