Marine Rubber Airbag
What is Marine Rubber Airbag
Marine rubber airbags, known as ship launching airbags or ship launching balloons, are made of heavy-duty synthetic-tire-cord layers with inner and out rubber layers in a long cylindrical balloon shape. Marine rubber airbags can be used for ship launching and landing, heavy lifting, and marine salvage.
production process
We are a professional manufacturer of airbags and fenders with a history of over 30 years in this industry. We have professional equipment (closed rubber mixing machine, open rubber mixing machine, rubber rolling machine, vulcanization canes and machines， large press machine, etc.). The whole manufacturing process could be controlled by ourselves to ensure the quality.
Transaction Cases
Qingdao LuHang Marine Airbag and Fender Co., Ltd has been devoted to the marine airbags and fenders industry for more than 30 years, Acting as a supplier of many world-class maritime enterprises, such as COSCO, CSIC, Hyundai Heavy Industries Co., Ltd, Mitsubishi Heavy Industries Co., Ltd, etc. Now, LUHANG has occupied the largest market in China and owns Many global customers who depend on professional manufacturers, Strict quality control, and guaranteed after-sale service.
Qingdao Luhang Marine Airbag and Fender Co.,Ltd is located in Jidong industrial Park, Jimo City, Qingdao. Our factory takes up the area of 4,0000㎡ with building area of 30000㎡ and has registered asset of 16million US dollars. We have devoted on marine airbags and fenders about more than 30 years.Luhang relies on its excellent product quality and many years of rich production experience. the products have been exported abroad, reaching the international advanced level, acting as a supplier of many world-class enterprise, such as COSCO, CSIC, Hyundai, Heavy Industries Co.,Ltd, Mitsubishi Heavy Industries Co.,Ltd, and have received support and recognition from customers around the world. Main market: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe.
Our certificate
Benefits of Marine Rubber Airbag
Carrying capacity
Ship launching airbags can provide sufficient buoyancy to support and lift the ship. Its load-bearing capacity depends on the size, construction and materials of the airbag.
Pressure resistance
Ship launching airbags have undergone strict quality inspection and testing to ensure that they have sufficient strength and durability when withstanding pressure.
Flexibility
Ship launching airbags are made of flexible materials and can adapt to hulls of different shapes and sizes, providing better adaptability.
Safety
When using marine launching air bags, strict operating procedures and safety standards need to be followed to ensure the safety of operators and ships.
Use ship launching airbags for buoyancy-assisted salvage
Ship launching airbags can generate large buoyancy and strong load-bearing capacity, and have been widely used in the rescue of stranded ships and other fields of floatation and salvage. It is a good protection device, and the ship launching airbag will play a great role as an important tool in an emergency.
The ship uses the marine launching airbag to discharge and launch
The ship uses the marine launching airbag as the main tool, supports the ship on the marine launching airbag, and moves it from the repair site into the water area or from the water area to the shore, using the low inflation pressure of the ship launching airbag, The large bearing area and the characteristics of easy rolling after large deformation, the ship is first lifted from the pier and placed on the ship launching airbag, and then pulled by the steel cable and the rolling of the ship launching airbag, so that the ship slowly slides into the water.
Types of Marine Rubber Airbag
Rescue Air Bags
Marine rescue air bags are a kind of airbag made of rubber material, which is usually used to salvage sunken ships or objects that have fallen into the water. It is a salvage tool with excellent performance, easy to use, environmental protection and reliability, and is widely used in shipwreck salvage and rescue of fallen objects.
Marine Air Bags For Launching
Marine air bags for launching now is 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 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.
Boat Lifting Airbag
Marine launching bag is a practical launching method with high efficiency and low cost, which has been widely used all over the world. We are the inventor of the first marine airbag launched into the water. As the founder of this field, we have played a leading role in formulating national and industry standards for marine airbags and fender products.
Marine Salvage Airbags
Marine salvage airbags are a special tool mainly used in salvage and engineering fields. It is made of high-strength rubber material and is shaped like an air bag. This tool is very versatile and can be customized for different situations.
How to use marine rubber airbags to launch a ship?
Set up holding system
Before launching, the vessel needs to be hold in position by a holding system. For the large ship, it is better to use ground anchors, winches, wire ropes, and pulleys. For the small ship, the shipyard can use a crawler crane to control for easier operation.
Inflate launching airbags to lift the hull
Insert the ship launching airbags between keel blocks. Then, inflating launching airbags to jack-up vessel. With the continuous expansion of the launching airbag, the entire hull is slowly supported by the airbag. Generally, the vessel will be lifted up from one end to another, step by step. Once vessel bottom leaves from support blocks, those blocks will be removed. At this time, the entire weight of the hull is distributed on multiple airbags. So created the conditions for dismantling the shipbuilding and laying aside the pier.
Clear the ship launching platform
Treatment of site flatness, the flatness of the ground should be ensured as far as possible on the launching slope. If there are pits, they must be filled with bagged sand. If there are obvious protrusions, they should be flattened, and the bottom of the ship should be cleared and the ship passing by All the debris and obstacles that hinder the rolling of the ship launching airbags on all the fields.
Adjusting launching airbags
That adjustment includes adjusting airbag pressure and vessel position. Sometimes vessel is built far away from the water. So have to move down on slipway before launching. Pressures of ship launching airbags need to be adjusted before the final launching according to practical conditions and the launching calculation.
Release winch let the ship move into water
Arrange mooring ropes on both sides of the ship. The ropes must meet the requirements of traction and must be introduced from the bow, tied to strong ground components such as bollards, and part or all of the hull can be tied if necessary. Remove all the piers under the ship, start the auto-release hooks, or cut the holding wire rope, and make the ship move into the water area with the help of the rolling rubber airbag. If the water area is limited, people can use the control launching, releasing winch ropes to let vessels roll down into water slowly.
Launch the ship and recover the airbag
The ship is successfully launched, drag the ship to the dock, and recover all rubber airbags, measure the ship's bow and stern draft, and check whether there is any water leakage in each cabin.
How to Choose Marine Rubber Airbag
Applicable airbag diameter range
Luhang Marine offers airbags in a variety of common diameters including 0.8m, 1.0m, 1.2m, 1.5m, 1.8m, 2.0m and more. Choosing the right diameter will both ensure a safe launch/landing and help save costs. Remember two principles here: the airbag's diameter should be greater than the keel block's height under the boat. Also, choose the smallest diameter that meets the project's needs.
Consider the height of the supporting object
The diameter of the marine airbag is closely related to the height of the block beam supporting the object to be moved. For example, if the height of the supporting block is 1m, an airbag with a diameter of not less than 1.5m can be selected. If the height of the block is within the range of 1.2~1.5m, airbags with a diameter of 1.8m or 2m can be considered.
Buoyancy and deep water applications
For marine salvage airbags, buoyancy is a crucial consideration. It determines the diameter and length of the rubber body. When used in deep water, attention needs to be paid to the airbag's pressure. This ensures it can withstand the higher water pressure and keep you safe.
Diameter and number of layers of the lifting airbag
For heavy-duty lift airbags, the diameter is closely related to the number of plies comprising it. Medium-pressure airbags are suitable for relatively light objects. High-pressure airbags are designed for heavy-duty operations. The number of piles you choose depends on specific lifting needs. For example, when lifting heavy structures with limited contact surfaces, a higher pressure and number of piles airbag may be a safer choice.
Marine Rubber Airbag Features
When the Marine Rubber Airbag is under the bottom of the ship, it is squeezed by the bottom of the ship and the air. Due to the unevenness of the rotation rate, the Marine Rubber Airbag will produce a swirling shape, which is a composite deformation that is both squeezed and produced. At that time, part of the balloon wall will produce wrinkles, in the wrinkle confluence of stress, multi-layer reinforced fiber layout of the wall is easy to layer Torn, provoke the wall to strengthen the fiber broken and cause the entire balloon burst.
Layout optimization of the layout of the principle is to determine the process of Marine Rubber Airbag in the process of determining the main stress of the small and the purpose of the target, and then save the angle of the layers of the cord, arrived in the wall of the layers of the force of the beam roughly balanced, The loss of life from the loss of the greatest degree of development. To this end, we created the inflatable rubber balloon strength model, held a shortened functional test.
Marine Rubber Airbag in a very unruly environment matters, was sun exposure, mostly about to dry water, gravel and all kinds of pollutants. The appearance of the balloon must be wearable, with the ability to resist fresh water and all kinds of chemical erosion and anti-aging ability. High bearing capacity of the rubber balloon body rejected the artificial rubber as an important information, the rational formula, add all kinds of accessories, try to prove that with long-term anti-aging ability and wear characteristics.
Precautions For Using Marine Launching Airbags
Choose a suitable airbag
According to the type, size and weight of the ship, select a marine launching airbag that meets the requirements. Ensure that the airbag has sufficient buoyancy and load-bearing capacity to safely support the launch of the ship.
Inflation pressure of the airbag
When inflating a marine launching air bag, the inflation pressure guidance provided by the manufacturer must be followed. Too high or too low inflation pressure may cause the air bag to fail or fail to provide sufficient support.
Check the integrity of the airbag
Before using the marine launching air bag, carefully check whether the air bag is damaged, leaking or aging. Make sure the air bag does not have any suspected damage to ensure it is working properly and providing safe support.
Proper airbag arrangement
When placing air bags on the side of the vessel, ensure that the air bags are evenly distributed and properly aligned with the structure of the vessel. Make sure the airbags are positioned and arranged to provide stable support and prevent the vessel from tilting or collapsing.
Control the launching process
With the support of the marine launching airbag, control the launching speed and direction of the ship to ensure a smooth and safe launching process. Follow professional operating procedures and ensure adequate personnel are involved and supervise the launching process.
Monitor the status of the airbag
During the ship launching process, closely monitor the status of the marine launching airbag. Pay attention to any abnormalities, such as the air bag sinking, leaking, or losing support. Take timely measures when necessary to prevent potential dangers.
Proper maintenance
Regular inspection and maintenance of marine launching air bags, including cleaning, anti-corrosion and replacement of damaged parts. Make sure the air bags are in good working order to provide reliable support when needed.
How to Repair Marine Rubber Air Bags
Clean the surface of airbags:When you are ready to repair airbags, you must clean up the airbag's surface to make sure there is no sand or oil on it. Then dry and put it in a clean place. Make sure that do not immerse the airbag into the water for more than 10 minutes before repair.
Check and mark the damaged area:Mark the repair area of airbags, which must be expanded from center to outside (20-26cm) and remember that do not ignore the hiding damaged areas. Note: the expansive range depends on the size of damaged areas.
Repair:Wear the surface of the damaged area until the cord showed and do not damage the cord layer.For some long cracks, it needs to use needle and cord layer to suture, sewing needle positioned about 2-3 cm away from crack, with about 10cm distance between stitches.
Thermal vulcanization process:Using a simple working structure (figure 6) to vulcanize the damaged areas.During the process of vulcanization, please remember to control the temperature up to 150±5 degrees and push pressure to that using jack. Then close the heat steel plate and permit it to cool very slowly to 60 degrees during this time, don't remove the jacket.
Inspection:Check the repair area to make sure that no leakage on it. Finally, inflate it and make a pressure test.
FAQ
Q: What is marine airbag?
Q: What are marine salvage airbags?
Q: What kind of certificate can you provide for marine rubber airbags?
Q: What's the lifespan of your marine rubber airbags?
Q: What is the best material for airbags?
Q: Can I use marine rubber airbags for both ship launching and docking ?
Q: How long are rescue air bags good for?
Q: What's your warranty period?
Q: What is your MOQ ?If we only need one. Can you produce it?
Q: I want to try your marine rubber airbags, but I never use it and don't know how to use ,can you help me?
Q: What's the application of the rubber airbags?
Q: How do marine salvage airbags work?
Q: How much do marine airbags weight?
Q: What’s the delivery time and payment terms ?
Q: So how should we choose the exact size of the marine airbag?
Q: How to use marine rubber airbags for ship dock?
a. Link ship and traction winches by wire rope.
b. Put and inflate rubber airbags under the ship to lift the ship,put rubber airbags as calculated width on the road.
c. Active traction winches,recycle wire rope slowly,keep ship move slowly until ship reach the repair place.
d. Work with the jack to lift ship to a height,then arrange blocks instead of airbags to support the ship.
e. Collect and clean rubber airbags,storage after dry.
Q: How to use marine rubber airbags for heavy objects transportation?
a. link ship and traction winches by wire rope.
b. Put and inflate rubber airbags under the ship,use inflatable rubber airbags to support the ship weight,then remove the blocks.
Depending on the size and shape of a ship, the ship may be launched by the end launching method.There are three ways to arrange airbags when using the end launching method: single row arrangement;cross over arrangement;two row arrangement.
c. Adjust the internal pressure of rubber airbags,reduce the ship height to a suitable working height to keep the ship Steady progress
d. Put 2 or 3 rubber airbags on the black area nearby the ship.
e. Active traction winches,release wire rope slowly,keep ship move slowly.
f. When the airbags separate from the bottom of bow,move them to the front of the ship moving direction.
g. Repeat f work until the ship nearby seawater.
h. Notify people in danger areas to evacuate,the workers on ship prepare to release the hauling of ship by winch when the ship enter deep seawater.
i. Collect and clean rubber airbags,storage after dry.
Q: What's the instructions of rubber airbags storage?
If airbags longtime no need to use,need to scientific storage:
a. We should clean rubber airbags,keep dry,Fill Talcum powder inside and coat Talcum powder outside
b. Place area require Dry, cool, ventilated,Stay away from Acid, base, grease, heat source.
c. Spread out flat the rubber airbags,not put heavy items on them.
We're well-known as one of the leading marine rubber airbag manufacturers and suppliers in China. If you're going to buy customized marine rubber airbag, welcome to get pricelist and quotation from our factory. For price consultation, contact us.
Ship Launching and Docking Airbag, Cylindrical Fender, Marine Salvage Airbags