6000 years ago, our ancestor begin to use log-rolling method to lift and move weights, which is still widely used in daily
production and actual life nowadays. Marine rubber airbag is designed with soft rubber to lift and carry weights, based on
log-rolling method.
Marine airbag is an innovative product of Chinese own proprietary intellectual property rights. It has wide application
like ship launching & upgrading, caisson lifting & moving, heavy weights lifting, underwater-engineering buoyancy aid. The marine
rubber airbag is not limited to space and heavy machinery, which could efficiently shorten the construction period and save lots
of funds.
- Product Details
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Quick Details
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Size:
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Customized Size
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Thickness:
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6 to 10 layers
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Working pressure:
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0.05 to 0.15MPa
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Material:
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Natural Rubber, Nylon rubber
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Technology:
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High pressure, anti-explosion type. Whole-wrapping technology
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Application:
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Ship launching and lifting
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Certificate:
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CCS / BV
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Packing:
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Pallet
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Warranty:
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24 monthes
Quick Details
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Place of Origin:
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Shandong, China
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Brand Name:
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Shunhang
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Product Name:
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Inflatable Floating Dock Rubber Salvage Used Marine Airbag For Sale
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Size:
-
Customized Size
-
Thickness:
-
6 to 10 layers
-
Working pressure:
-
0.05 to 0.15MPa
-
Material:
-
Natural Rubber, Nylon rubber
-
Technology:
-
High pressure, anti-explosion type. Whole-wrapping technology
-
Application:
-
Ship launching and lifting
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Certificate:
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CCS / BV
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Packing:
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Pallet
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Warranty:
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24 monthes
History Of Boat Lifting Airbags
Feature of Shunhang Boat Lifting Airbags
1. Big Carrying Capacity
The carrying capacity of the rubber airbag is an important indicator of its quality. The CB/T 37951996, The rubber airbags specifies its working pressure and the load-bearing capacities per meter under various compression ratio. Our new generation of airbags are made of natural mixed rubber and high-tension rubber dipped tyre cord fabric.
Their carrying capacities have been over one times stronger than the standard requirements. That means that less airbags are needed for the ships up to the slipway and launching if with Shunhang rubber airbags meanwhile the safe reliability is also guaranteed.
2. High Capacity Against Compression and Twisting
When the airbag moves under the ship bottom, it will be compressed between the ship bottom and the ground. As the rolling velocities are not the same among them, they would be torsional deformed. This composite deformation created by both the compression and twisting is described as compressed and twisted movement. When such compression and twisting happens on the airbag, its partial wall would buckle. Then the wall in structure of the multi-layer rubber dipped tyre cord fabric would very easily laminate and tear out, resulting the breaking of the fortifying fiber and consequentially the bursting of the entire airbag.
When the airbag moves under the ship bottom, it will be compressed between the ship bottom and the ground. As the rolling velocities are not the same among them, they would be torsional deformed. This composite deformation created by both the compression and twisting is described as compressed and twisted movement. When such compression and twisting happens on the airbag, its partial wall would buckle. Then the wall in structure of the multi-layer rubber dipped tyre cord fabric would very easily laminate and tear out, resulting the breaking of the fortifying fiber and consequentially the bursting of the entire airbag.
3. New Design of Explosion-proof Construction At the End
For our new generation of airbags, both the rubber compounding and making process are improved so that their structural tearing strengths are improved and so for their capacity for twisting and compression resistance. The deflating possibility would increase at the joint of the end ironwork and the rubber as the working pressure rises.Once it leaks at the end after repeated operation, the end would be more likely to burst out under the high pressure and injure the people.Such accidents due to poor air bag quality have happened many times in the ship launching. We should keep alert on it. To meet the requirement on the air tightness under high internal pressure, the new anti-blasting construction is designed with the end to enhance the binding strength and air tightness at the joint of the bag body and end ironwork. This design could meet the increased working pressure and has been free of the leakage so far in use and proved safe.
For our new generation of airbags, both the rubber compounding and making process are improved so that their structural tearing strengths are improved and so for their capacity for twisting and compression resistance. The deflating possibility would increase at the joint of the end ironwork and the rubber as the working pressure rises.Once it leaks at the end after repeated operation, the end would be more likely to burst out under the high pressure and injure the people.Such accidents due to poor air bag quality have happened many times in the ship launching. We should keep alert on it. To meet the requirement on the air tightness under high internal pressure, the new anti-blasting construction is designed with the end to enhance the binding strength and air tightness at the joint of the bag body and end ironwork. This design could meet the increased working pressure and has been free of the leakage so far in use and proved safe.
Caculation of Performance of Boat Lifting Airbags
Formula: Bearing capacity F=PS
P=pressure in the airbag(MPa)
S=contacting area between ship bottom and airbag(M²)
S= π*(D1-D2)/2
P=pressure in the airbag(MPa)
S=contacting area between ship bottom and airbag(M²)
S= π*(D1-D2)/2
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Some normal sizes of our boat Lifting airbags, other sizes are also available
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Diameter(m)
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Effective Length(m)
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Layer
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Pressure(MPa)
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1.0
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10
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6-8
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0.05 ~0.18
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1.0
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12
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6~8
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0.05 ~0.18
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1.0
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15
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6~8
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0.05 ~0.18
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1.2
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10
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6~8
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0.05 ~0.18
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1.2
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12
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6~8
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0.05 ~0.18
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1.2
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15
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6~8
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0.05 ~0.18
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1.5
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12
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6~9
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0.05 ~0.16
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1.5
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15
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6~9
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0.05 ~0.16
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1.5
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18
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6~9
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0.05 ~0.16
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1.5
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20
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6~9
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0.05 ~0.16
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1.5
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24
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6~9
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0.05 ~0.16
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1.8
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12
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7~9
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0.05~0.15
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1.8
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15
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7~9
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0.05~0.15
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1.8
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18
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7~9
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0.05~0.15
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1.8
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20
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7~9
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0.05~0.15
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1.8
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24
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7~9
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0.05~0.15
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2.0
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18
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8~10
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0.05~0.14
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2.0
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20
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8~10
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0.05~0.14
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2.0
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24
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8~10
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0.05~0.14
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2.5
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18
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8~10
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0.05~0.12
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2.5
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20
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8~10
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0.05~0.12
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2.5
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24
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8~10
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0.05~0.12
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Boat lifting airbags used for ship lifting , docking, launching etc.
Boat lifting airbags used for
hoisting and transporting heavy structure
Rubber airbags used for floating
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