MULTIPURPOSE PULLEY FOR BOOSTING OIL-WELL SUCKER-ROD PUMP PLANT

摘要

FIELD: operation of wells in gas and oil producing industry. SUBSTANCE: pulley is made in form of bowl with bottom on rear end. Fitted part is made in form of wedges located over circumference and locked against axial displacement relative to drive member of drive; rear end is connected with respective end of bowl pulley by means of loaded threaded joint. Wedges are provided with set of changeable backings according to diameter of drive member. EFFECT: enhanced reliability. 4 dwgu