| 摘要 |
FIELD: hoisting sunken ships and cargoes. SUBSTANCE: device is special-purpose hoist which may be used for deep depth. Device has vertical truss carrying cargo tackle block, swing wall-mounted derrick crane, cargo brackets, cargo winches and cargo link block-and-rope chain which is kept in assembled state only when it is immersed in water. Each link consists of two roller blocks and polymer rope laid in them; each block is just set of movable rollers fitted on common axle between plates-cheeks which are provided with ears of articulated joint; their coaxial position is fixed by rigidity plates welded to sides of cheeks. Assembly of links in chains and disassembly of chain in links will be effected on vertical truss which is used as stand. During assembly of chain, articulated joints of links are connected by means of detachable axles included in set of each link; during disassembly of chain, articulated joints are separated. During assembly of chain, links are delivered to vertical truss from hold of catamaran and during disassembly of chain, they are stowed in hold by means of swing wall-mounted derrick crane and auxiliary cargo winch. Cargo hoisting device is intended for group installation of high-capacity catamarans and may be used individually. EFFECT: enhanced reliability. |
