Ship Launching Airbags, also known as inflatable marine airbags, roller bags, air lift bags, and salvage bags. Airbags range in size from 0.8 to 4.0m diameter, with effective lengths of 5.0m to 26.0m.. Airbags are used for ship launching, haul-outs, loading, and floating. They are widely used in cargo boat launching and landing, lifting and moving sunken ships, and salvaging stranded boats. Air bags have the benefit of not only saving labor and time, but investment costs. Additionally they are flexible, portable, and dependable, the biggest vessel launched by ship launching airbags up to 100,000 DWT. Ship Launching Airbags are made of heavy-duty synthetic-tire-cord layers with inner and out rubber layers in long cylindrical balloon shape.
Ship launching relying on ship launching airbags is a an extremely promising mature technology, comparing with â??end-on launchingâ?�, â??side ship launchingâ?�, â??float-outâ?�, this ship launching technology overcomes the restrictions of fixed launching track of side-launch. Ship launching airbags are accepted by more and more shipyards world wide.
Structure 1) Outer Rubber Layer The outer rubber layer that covers the outside of ship airbag to protect under layers from abrasion and other external forces. This compound has sufficient tensile and tearing strength to withstand any condition and hard usage. 2) Inner Rubber Layer The inner rubber layer seals pressurized air inside ship airbags. 3) Synthetic-Tire-Cord Layer as Reinforcement The reinforcement cord layers, which are made of synthetic-tire-cord commonly used in tires, are arranged at ideal angles to hold the internal pressure and distribute stress evenly. So they can provide strong efficient reinforcement. Material Ship rubber airbags for docking and undocking are constructed of synthetic-tire-cord layers; inner and outer rubber layers are sometimes added. All materials used are vulcanized. Air tightness test: Without carrying any load, fill the air bag till the internal pressure of the air bag reaches rated working pressure. After 1 hour. The pressure loss should be less than 5 % of initial pressure. Bursting test: Fill the air bag with water until the air bag bursts. The water pressure at the time of bursting shall be no less than three times of rated working pressure.
1.High bearing capacity 2.Resist knead pressure 3.Anti- knock end ironwork 4.To optimize the structure of the layout According to customers requirement
Changlin ship launching air bag ¡ª how to select air bags? Air bag diameter The air bag diameter is mainly decided by the ship blocks' height. Ship lifting from blocks is the most important stage in the air bag launching process. At this stage, the ship whole weight is to be lifted by air bags, and the air bag working height must be larger than the block height. The air bag diameter should be selected according to the block height. The air bag diameter must be increased by 0.5m-0.7m, which is based on the block height, otherwise the air bag bearing capacity may be not enough. At present air bags with diameter less than 1.2m can only be applied on small ships. Air bags with diameter 1.5m or 1.8m are used to launch over 10, 000dwt ships. For block height larger than 0.9m, diameter 1.5m air bags are mostly chosen for the launching. For block height larger than 1m, diameter 1.8m air bags are preferred. Air bag length For small ships, the air bag length should be slightly larger than the ship molded breadth. Air bag length can be decided by the formula: b
Supplier: Ship launching marine airbag, rubber airbag, rubber fenders
The history of changlin marine airbags: Air bag launching was developed based on traditional slideway launching mode and invented by chinese in the early ch. C.Environmental friendly In tradational slideway launch, some distance slideway extends into underwater, which affects the flood embankment and navigation environment. Furthermore, lubricating grease mass causes water contamination. Air-bag launch shortens the length of ramp way length under water. There is no emission into water. According to customers requirement
Changlin ship launching air bag ¡ª how to select air bags? The type code and specification of air bags should be selected according to ship type, dimensions, and launching extended length at each side should be slightly larger than air bag diameter. For medium ships, the extended length at each end shall not be very long. For example, a normal ship like cargo ship with block coefficient cb > 0.75, airbag should be equal to the breadth of flat bottom at mid-ship (the breadth excludes arc part at bilge). For large ships, if existing airbag length is shorter than the flat bottom breadth, the longest air bags should be ordered. The airbags layout can be interlaced mode or twin-row mode. We would like to provide advice and suggestion according to customer's specific situation. According to customers requirement
Max size: dia2.5mx24m. 1.Description: Dia1.0m*l10m, 6/7/8 layers Dia1.0m*l12m, 6/7/8 layers Dia1.0m*l15m, 6/7/8 layers Dia1.2m*l10m, 6/7/8 layers Dia1.2m*l12m, 6/7/8 ayers Dia1.2m*l15m, 6/7/8 layers Dia1.5m*l12m, 6/7/8 layers Dia1.5m*l15m, 6/7/8 layers Dia1.5m*l18m, 6/7/8 layers Dia1.5m*l20m, 6/7/8 layers Dia1.5m*l24m, 6/7/8 layers Dia1.8m*l12m, 6/7/8/9 layers Dia1.8m*l15m, 6/7/8/9 layers Dia1.8m*l18m, 6/7/8/9 layers Dia1.8m*l20m, 6/7/8/9 layers Dia1.8m*l24m, 6/7/8/9 layers Dia2.0m*l18m, 6/7/8/9 layers Dia2.0m*l20m, 6/7/8/9 layers Dia2.0m*l24m, 6/7/8/9 layers
We are a leading manufacture of the ship launching airbag , pneumatic rubber fender, foam filled rubber fender, our product are wildly used in the shipyard , docking , seaport and ship salvage. Dimensions can be made according our customer's need.
1 101-68-8 4,4'-Diphenylmethane diisocyanate 2 9016-00-6 Poly(dimethylsiloxane) 3 26471-62-5 Tolylene diisocyanate 4 100-42-5 Styrene 5 141-32-2 Butyl acrylate 6 107-13-1 Acrylonitrile 7 106-99-0 Buta-1,3-diene 8 75-38-7 1,1-difluoroethylene 9 9-38-9 Chlorotrifluoroethylene 10 111-44-4 2,2'-Dichlorodiethyl ether 11 1187-93-5 Trifluoromethyl trifluorovinyl ether 12 21645-51-2 Aluminum hydroxide 13 116-14-3 Tetrafluoroethene 14 116-15-4 Hexafluoropropylene 15 126-99-8 Chloroprene 16 103-11-7 2-Ethylhexyl acrylate 17 140-88-5 Ethyl acrylate 18 78-79-5 Isoprene 19 96-33-3 Methyl acrylate 20 1300-21-6 Dichloroethane