Hydraulic drill feed units

Details Hydraulic drill feed units Hydraulic drill feed units

1986-09-30

1988-07-19

Kazenske, E. R.

Tool driving or impacting

Advance causing or controlling means

Motor causes or controls advance

173141, E21C 511

Patent

active

047578661

ABSTRACT:
An hydraulic drill feed unit is provided having a main support frame extending from its mounting on a base plate. Single stage cylinders are located on either side of the main support frame and also extend from the base plate. A subframe adapted to travel upon the main support frame is connected to the single stage cylinders. A two stage cylinder is attached to the subframe and extends to a slide member adapted to travel upon the main support frame. The slide member, to which the drill is attached, can move with the subframe responsive to the single stage cylinders and can move relative to the subframe responsive to the two stage cylinder. Each of the cylinders are equipped with ball and socket connectors which allow the drill feed unit to obtain increased lift out of a minimum space. In such a manner, the drill can be positioned to engage the rock strata in very narrow mineshafts or tunnels.

REFERENCES:
patent: 3780816 (1973-12-01), Arrington et al.
patent: 3850253 (1974-11-01), Lupton et al.
patent: 3985328 (1976-10-01), Bull
patent: 4526345 (1985-07-01), Schmidt

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