| 摘要 |
FIELD: transport.SUBSTANCE: proposed machine comprises chassis, rotary support, swing-out mechanism with drive, rotary platform with mast-boom hardware and air screw. The latter is mounted at boom end, oriented in vertical plane and equipped with reversible drive with control system. The latter incorporates swing-out mechanism drive load transducer to vary air screw drive power in direct proportion to swing-out mechanism drive load.EFFECT: optimised load structural components at boom turn.2 dwg |
