Turret rock bolter with stinger/centralizer

Details Turret rock bolter with stinger/centralizer Turret rock bolter with stinger/centralizer

E - Fixed Constructions

21

D

E21D 20/00 (2006.01)

Patent

CA 2323845

A rock bolter (10) has a drill (14) and a bolt driver (24), both mounted to a turret (36) that rotates relative to a base (40) to align either the drill (14) or the bolt driver (24) with a work axis (28). A stinger/centralizer (44) has two head elements (46, 58), each advanced along a curvilinear path. When advanced, the head elements (46, 58) mate to provide a centralizer passage on the work axis (28). A supplementary stinger (220) affixed to the base (218) extends to engage the rock surface (208) and provide stability as the head elements (202, 204) are retracted. The drill (460) and the bolt driver (466) are mounted on carriages (458, 464) activated by a common mechanism. A drill carriage disabling surface (476) is affixed to the base (454) to block the drill carriage (458) when the drill (460) is off the work axis, and a bolt driver carriage disabling surface (472) is affixed to the base (454) to block the bolt driver carriage (464) when the bolt driver (466) is off the work axis.

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