Apparatus for charging rising drillholes

Details Apparatus for charging rising drillholes Apparatus for charging rising drillholes

1982-03-30

1984-08-21

Nelson, Peter A.

Ammunition and explosives

Blasting

Borehole loading

86 20C, 299 14, F42B 300

Patent

active

044663544

ABSTRACT:
An apparatus for the charging of rising drillholes (10), preferably large holes of diameter approximately 100 mm or more, with pipecharges (22). The aim is to make it possible to feed charges into the hole in such a way as to fill the hole effectively while making it easy to apply the necessary firing gear (primer and detonator). The charging apparatus comprises a stand (14) capable of being aligned with the mouth (28) of a drillhole by pivoting on a fixed surface (26). The stand includes a lifting means (18) which is provided with a rest (20) capable of travelling towards and away from the drillhole, to carry pipecharges. That part of the stand which is aligned with the drillhole consists of a guide unit (16) which is arranged to guide the pipecharges into the drillhole as the rest travels towards the said drillhole. The pipecharges are retained in place after the lift by retaining means (30).

REFERENCES:
patent: 2818809 (1958-01-01), Roy
patent: 3125925 (1964-03-01), Ljungberg
patent: 3752229 (1973-08-01), Pridy
patent: 3907044 (1975-09-01), Robertson
patent: 4036100 (1977-07-01), Hurley
patent: 4051988 (1977-10-01), Egerstrom et al.

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