Hydraulic and earth engineering – Miscellaneous
Patent
1996-06-27
1998-02-24
Graysay, Tamara L.
Hydraulic and earth engineering
Miscellaneous
4052591, 29809, 81 5737, E21D 2000
Patent
active
057205825
ABSTRACT:
The present invention provides a bolt delivery system having a bolt magazine movably attached to a magazine base which in turn is affixed to a rock bolter having a bolt driver. The bolt magazine moves between a work position and a park position. In its work position, a linear incremental bolt advancing mechanism advances the bolts to where they are aligned with the bolt driver, and, in combination with a bolt-embracing arm, maintains the aligned bolt until it is engaged by the bolt driver. After the bolt driver has engaged the bolt and advanced it to engage a bolt centralizer provided to position the bolt in a pre-drilled hole in a rock surface, the bolt magazine is moved to its park position. At which time, the bolt driver is further advanced driving the bolt into the pre-drilled hole. The linear incremental bolt advancing mechanism preferably has a lower and an upper bolt advancing mechanism, and more preferably, provides the bolts a component of motion toward the rock surface. Preferably, the bolt delivery system also delivers bolt plates.
REFERENCES:
patent: 3218893 (1965-11-01), Madison et al.
patent: 4229124 (1980-10-01), Frey et al.
patent: 4398850 (1983-08-01), Talvensaari
patent: 4420277 (1983-12-01), Hibbard et al.
patent: 4473325 (1984-09-01), Beney et al.
patent: 4832536 (1989-05-01), Spross et al.
patent: 5114279 (1992-05-01), Bjerngren et al.
patent: 5556235 (1996-09-01), Morrison et al.
patent: 5597267 (1997-01-01), Morrison et al.
Coombs Perry L.
Morrison Ward D.
Cannon Industries, Inc.
Graysay Tamara L.
Lagman Frederick L.
Weins Michael J.
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