BORING RIG Russian patent published in 2008 - IPC E21B3/00 E21B19/84

Abstract RU 2318107 C1

FIELD: mining, particularly devices for bore-hole drilling in mine tunnel.

SUBSTANCE: boring rig comprises rotator with feeding assembly movably installed on guiding frame and including friction pulley and flexible member passing over friction pulley. The flexible member has working and idle branches connected with tightening device. Working and idle branches are made as block and tackle systems having the same order.

EFFECT: increased efficiency due to provision of stable drilling of rock having different hardness.

1 dwg

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RU 2 318 107 C1

Authors

Chikin Viktor Grigor'Evich

Dates

2008-02-27—Published

2006-04-03—Filed