Tool base securing system

Details Tool base securing system Tool base securing system

1996-01-04

1997-11-25

Graysay, Tamara L.

Hydraulic and earth engineering

Miscellaneous

4052591, E02D 574

Patent

active

056904495

ABSTRACT:
A tool base securing system for a rock bolter. One aspect of the invention provides a securing system for the tool base which is being advanced on a cradle along a feed shell. This system includes a forward latch which is pivotably attached to the forward section of the cradle base and has a tool base engaging lug. A mechanical linkage is provided to engage and disengage the front lug from the tool base as the cradle is advanced from and returned to a park position on the feed shell. In a preferred embodiment a rear latch is also provided which has a mechanical linkage for engaging and disengaging a rear lug. A second aspect of the invention provides a securing system which provides a mechanical interlock which immobilizes all tool bases which are off the cradle when the cradle is being advanced.

REFERENCES:
patent: 4158520 (1979-06-01), Prebensen
patent: 4226559 (1980-10-01), Prebensen
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.

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