FIELD: mining.
SUBSTANCE: system comprises on one base a hydraulic mechanism designed to lower and lift several elements of a string, which must be arranged in a borehole or to removed from it. The specified mechanism comprises a row of control ropes, and each of these ropes has a dead end, which is fixed to a cylinder carriage, which carries several transfer pulleys in order to manipulate simultaneously two, three or four elements of a drill column, every of which has a length of around 9.20 m (class 2), with provision of tripled travel of pulling and pushing cylinders.
EFFECT: higher efficiency, profitability and safety of a production string.
6 cl, 5 dwg
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