| 摘要 |
aeronautical engineering, shipbuilding, mechanical engineering and other industries. SUBSTANCE: airborne lifting device has lifting crane with two load trolleys, each bearing its load tackle block and winch of load lifting mechanism connected by wire ropes with tackle block of the same trolley installed on cross rails secured on frame of lifting crane, and special appliance furnished with frame arranged across longitudinal axis of airplane and secured on two longitudinal beams installed stationary in cross direction, and two systems, each including crossmember suspended on flexible tie-rods made of wire ropes, passed through running blocks installed on crossmember and connected by free ends by means of fastening units from one side of crossmember with hook of winch of load lifting mechanism of each load trolley and at other side of crossmember, with metal chain. Device has also second lifting crane arranged opposite to first lifting crane relative to said cross frame and two load trolleys installed on cross rails of second lifting crane so that each load trolley is located in one longitudinal plane with one of load trolleys of first lifting crane. Device is furnished also with two systems, each one being secured on each load trolley of second lifting crane and made similar to systems of first lifting crane. Bellcranks are made on cross frame of said appliance, free ends of metal chains of corresponding said system being connected to each arm of bellcrank by means of locks. Travel motion mechanism is furnished additionally with four carriages connected by mean. Of brackets with frame of second lifting crane and installed in pairs on rails of longitudinal track and coupled by hinged tie-rods to each other and with four carriages installed over longitudinal beams of appliance. EFFECT: increased load lifting capacity of airborne lifting device. 5 dwg
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