Ship Launching Rubber Balloon Docking Airbags With BV Certificate

Ship Launching Rubber Balloon Docking Airbags With BV Certificate

Lifting rubber airbag are also known as air bags, ship lifting airbag, ship rubber airbag,rubber tube, ship salvage airbag,rubber pontoon,inflatable air bags, air lifting bags, air balloon,salvage bags,ship launching rubber airbag. Airbag now are used for ship launching,loading and floating.They are widely used in cargo/boat/ship/vessel launching and landing,lifting and moving sunken ships and heavy goods.

Materials
An airbag is to be constructed of an outer rubber layer, one or more synthetic-tyre-cord layers, and an inner rubber layer. The arrangement of synthetic-tyre-cord reinforcement layers is shown in the picture below, all materials shall be vulcanized firmly.

Prior to the airbag production, the outer and inner rubber layers shall be tested to meet criteria in the following table in
accordance with the test methods given in the international standard list in the table. While only one satisfactory sample per batch is required for test numbers 1 through 3, all others must be tested for test numbers 4 through 9 annually. If the first sample fails, two additional sample should be tested. If the additional samples pass the test requirements, the materials will be deemed to have passed the test. Otherwise, the materials will be deemed to have failed the test and another batch of materials shall be selected.

Features

1.High resistance to pressure: When marine airbag is put under the bottom of the ship, it is squeezed by the ship and the air. As a result of the uneven rotation rate, the airbag will change the spiral shape. Our products has high resistance to take the pressure to remain its shape.
2.Durable anti-aging and wear-resistant ability: Marine airbags are exposed to sunlight, fresh water, sand and other pollutants in a hard environment. Our products are durable in appearance, resistant to fresh water and chemicals, and resistant to aging.
3.Optimized layout: the strength model of inflatable airbag was established and the function test was conducted.

Advantages of ship launching air bags

1 High strength
2 Wear resistance and anti-aging
3 Good air tightness
4 Safety and reliability
5 High kneading & compressing resistance and damping capacity
6 Design different sizes according to client's request
7 Good raw material-cord fabric makes us win warm praise from clients
8 Produce according to ISO 14409

Different layers of airbags

Specification of marine docking rubber airbag

Loading of airbags

The requirements of launching ship and relevant equipments.

1.Ship
The engineering work under water line shall wholly be finished, especially those equipments, valves and others that are to be installed at the openings under ship waterline,the installations should be approved by inspection. All the burrs, welding beading and the like on the ship bottom or appendages should be ground away. All the welds on the shell plate must pass inspection and tightness test. The main dimensions of the ship should be measured up and the mark of loadline must pass inspection. All the paint work of the shell plate has been finished.

2. Ramp way
The ramp way on which the airbags will rolling should be cleaned and be clear of sharp fends such as iron nail. The ramp way should be leveled and the level error from left to right should less than 80mm. The ground caved in should be filled up and the ground bearing capacity should be relatively equalized. The ramp made of mud land, sanded land, sands or concrete, however, its bearing capacity should be twice as big as the working pressure of airbags. The slope of ramp is to be determined according to the size of the launching ship and is generally no bigger that 1/7. In the range of the whole length of the ramp way, the shape may be of multiple combination with slope line, are line and others. However, the ship bottom should not contact the ground even when the airbags are at their lowest working height. The ramp way should extend into water for certain length.

3.Winch
In general, a slow winch is to be selected, its veering speed is about 9-13/m/min. The moving speed of a ship must not be more than 6m/min with the control of hauling force of winch wire. If the ship weight is less than 200t, the moving speed can be increased properly. The wire must be inspected and replaced regularity.

4.Air compressor
The type and capacity of the air compressor is to be selected according to the total volume of all the airbags provided for the launching and time required for air filling and the air pressure. The gas tank of air compressor should be installed with
adjustable pressure limiting valve.

Application

1.For ship upgrading, conversion or new/repair launching
2.Marine airbag for salvaging sunken ship or heavy immersed steel structure
3.For hoisting and transporting heavy goods up to 10,000 tonnes structure on land
4.For floating use purpose as improve the draft.
5. Container for storing and transporting gas and corrosive chemical liquid and pure water for voyage
6.Rubber airbags used for culvert making