ROLLER-BAG Russian patent published in 2018 - IPC B66F3/35 

FIELD: transportation.

SUBSTANCE: invention relates to pneumatic lifting devices for launching, lifting from water along slips of large and small vessels of various designs: ships, motor vessels, barges, tankers, boats, and can be used in ship building and ship repair enterprises, in the sea and river fleets. For this, the roller-bag 1 is made in the form of two cones 2, in the vertices of which valves 3 with lugs 4 are installed, and a cylindrical part 5 containing a covering rubber layer 6 with a damping rubber layer 7, power frame made of high-strength fabric rubberized layers with a first layer 8 located at an angle of 0° relative to the roller bag 1 axis. Threads of the second 9 and subsequent layers are located at an angle of 45-90° relative to the roller bag 1 axis, the rubberized layers are laid in a spiral at an angle of 60-80° relative to the roller bag 1 axis, on the third 10 and the fourth 11 layers reinforcing rubber bands 12 with a width of 500-900 mm are located, which threads have an angle of 0° relative to the roller bag 1 axis.

EFFECT: technical result is increase of operation reliability due to uniform distribution of stresses from loads along the roller-bag entire surface, improvement of performance characteristics, which will allow to reduce the labour intensity of the vessels movement operation, expand the roller bag range of use for various designs and different carrying capacity of ships, and also additionally use it as a jack for lifting of the large-sized loads.

6 cl, 6 dwg