| 摘要 |
FIELD: general engineering; oil producing industry. ^ SUBSTANCE: proposed surface drive of submersible screw pump contains reduction gear with vertical input and output shafts, engine arranged on side surface of reduction gear housing and installed for displacement, torque transmission V-belt drive and brake device. Brake includes two spaces sealed relative to each other. One space filled with oil accommodates shaft of reduction gear with overrunning clutch fitted on. Second space non-filled with oil, accommodates friction device consisting of friction member and disk which serves simultaneously as body of overrunning clutch. Adjusting device acting onto friction member is provided to regulated brake torque. ^ EFFECT: improved reliability and efficiency of drive in operation, provision of stepless killing of reactive torque of rotating string with engine shut down, prevention of turning out of threaded joints. ^ 4 cl, 5 dwg |
