E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
E21C 47/00 (2006.01) E21C 25/10 (2006.01) E21C 35/18 (2006.01)
Patent
CA 2192523
The operative members in open pit mining apparatus, designed as strata cutting and loading machines are exposed to high wear and tear in practical operation. The cutter tools (3) are so designed that those picks (5) which are cutting are in their operating position while the picks (5) for the other working direction areswivelled out of the cutting orbit. They must be robust and always functional. Pick holders armed with picks (5) are therefore pivotally disposed on hinges on both sides in the direction of rotation on the cutter bars (1) arranged on the circumference of the cutting drum. Two pick holders on opposite sides, form a pair. These are interconnected in articulated manner by a bar of such length that one pick (5) can perform its winning action while the other pick (5) is angularly displaced out of the groove being cut. Due to the excavating resistance, the cutter tools (3a and 3b) automatically assume their operating position. A two-way latch is provided for fixation in either operating position. The so designed cutting drum permits high operational reliability in robust operating conditions.
Gowling Lafleur Henderson Llp
Man Takraf Fordertechnik Gmbh
LandOfFree
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