| 摘要 |
FIELD: machine building.SUBSTANCE: between the drive engine and pump jacks the central switching coupling, multi-stage central gearbox, angle reduction gearing unit, side switching couplings and cardan drives are installed. Three pairs of gear wheels, easy three-link planetary gear and six switching couplings ensure 18 gears in wide range of gear ratios. The multi-stage gearbox ensures reliable start-up of the pump-jacks due to high gear ratio of low gears and selection of the optimal oscillation frequency of bottom-hole pumps due to distribution of the gear ratios within wide range.EFFECT: extended operation features of the pump-jacks due to improved balance of their operation.3 dwg |
