FIELD: mining industry, drilling of oil and gas wells by turbine method. SUBSTANCE: vibration gear has body with flow section, disc freely rotating around axis of body thanks to unbalanced mass, eccentric coming in the form of hollow shaft placed along axis of body with weight eccentrically anchored inside its space and made fast to flag indicator bordering on disc. Eccentric is joined with one end to hydraulic turbine and with the other end to disc. Disc has hole for passage of flushing fluid. EFFECT: enhanced efficiency of hydraulic power of mud pumps. 3 dwg
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