Ship landing Airbags

Ship Landing Airbags, also known as roller bags or ship launching balloon, are made of heavy-duty synthetic-tire-cord layers with inner and out rubber layers in long cylindrical balloon shape. Ship landing airbags can be used for the ship launching, ship landing work. Ship landing relying on ship landing airbags is a innovative ship landing technology. Ship landing mean haul out veseel to the land iwth pulling winches and rolling airbags. Comparing with traditional trolley docking method, this system has less demand of slipway and also the pulling winch.

Material of Ship Landing Airbags

Ship landing airbags are to be constructed of an out rubber layer, multilayer heavy-duty synthetic-tire-cord layers, and an inner rubber layer vulcanized firmly. Ship docking airbags are cylindrical balloon body, with two conical head and end mouth. Air tightness swivel and air inlet kits are screwed with end mouth. Refer below picture.
 
 

• Synthetic-tire-cord layer

Reinforcement layer of the ship hauling airbags which are made of rubber coated synthetic-tire-cord fabrics. Many synthetic-tire cord layers are twined at ideal angles by unique and patented “Holistic Wrapping Technology“. To hold the internal pressure and to distribute the stress evenly. Buoder use the 1870 dtex/2 type synthetic-tire-cord fabric. The warp is over 95 cords per 100 mm in width, and the breaking strength is more than 310N per cord.

• The outer rubber layer covers the outside of ship docking airbags. To protects the cord layers from abrasion and other external forces. This compound has sufficient tensile and tear strength to withstand any weather condition and hard usage.

Prior to the air bag production, the out and inner rubber layers are tested to meet the requirements of below table

Our properties requirements of outer and inner rubber material comply with ISO 14409.

Classification of Ship Landing Airbags

Ship docking airbags are categorized by “ordinary airbags”, “high-bearing capacity airbags”, and “Super-high-bearing capacity airbags” according to the bearing capacity.

• QP Ordinary airbags — the air bag with 3, 4 or 5 layers of cord fabric
• QG High-bearing capacity airbags — the air bag with 6, 7 or 8 layers of cord fabric
• QS Super-high-bearing capacity airbags — the air bag with 9, 10 or more layers of cord

The standard diameter of ship launching airbags (D) varies such as 0.8m, 1.0m, 1.2m, 1.5m, 1.8m and 2.0m, etc. The standard effective length of air bag (EL or L) is from 6m to 26m, which should be specified by the user. Other specification ship launching airbags also can be supplied upon request.

Performance Parameters of Marine Air Bags

For the detailed performance of each diameter airbag at different working height, please feel free to contact us.
 

Acceptance Test for Commercial Ship Landing Airbags

Prior to delivery of the air bags, we test every air bag for the following items:

• The appearance of each ship launching airbag is smooth, glossy and without blemish such as crack, blister, delamination, pits or impurities.

• The length and diameter of each ship hauling airbags are measured with the rated working pressure and is within ±3%.

• The gas-tightness is tested without carrying any load as per ISO 14409. The pressure loss is less than 5% of rated working pressure within 1 hour.

Buoder ship landing airbags are type approved. This means we have demonstrated the performance of ship beaching airbags to independent inspectors CCS. Type approve test is the essential and necessary qualification of qualified manufacturer of ship launching airbags. In addition to the requirements for the material, appearance and dimensional tolerances, “Gas-tightness Test”, “Compression Test”, “Bearing Capacity Test”, “Bursting Test”, and “Compression-recovery Test” are carried out. For more details, please kinldy refer ISO 14409.

All Buoder ship beaching airbags are manufactured and tested comply with ISO 14409 “Ships and marine technology – ship launching air bags“, certificated by CCS, LR, DNV. There are two more China industrial standards and one ISO standard for ship launching airbags:

– CB/T 3837-1998 Technological Requirements for ship Upgrading or Launching Relying on Airbags (Shipbuilding Industry Standard, PRC)
— CB/T 3795-1996 / CB/T 3795-2009 Air bag for ship up to or down to launching way (Shipbuilding Industry Standard, PRC)
–- ISO 17682 Ship sand marine technology —Methodology for launching ship utilizing air bags