F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
138/74.14
F15B 21/00 (2006.01) E21B 15/04 (2006.01)
Patent
CA 1114720
Turning Mechanism for the Feed of a Drilling Machine, Especially a Rock Drill Abstract of the Disclosure This invention relates to a turning mechanism for the feed of a drilling machine, especially a rock drill. The mechanism comprises a first hydraulic cylinder with a piston and a piston rod to turn the feed round an axle which is transversal to the longitudinal axis of the feed, i.e. to the drilling direction. It also comprises a directional control valve to control the first cylinder, a second hydraulic control with a piston to turn the feed, a directional control valve to control the second cylinder and a hydraulic pressure source. The second hydraulic cylinder is coupled parallel to the first cylinder so that the stroke of the piston of the second cylinder by means of the stroke of the piston of the first cylinder causes a look-out angle for the feed which is determined by the stroke of the piston of the second cylinder.
336880
Heikkila Veikko
Leppala Matti
Bereskin & Parr
Oy Tampella Ab
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