Ship Launching Rubber Airbags are specialized air bags that are used for launching marine vessels. This method of launching ships is called airbag launching, which are made of synthetic-tire-cord reinforcement layers and rubber layers. It is a very popular vessel launching method, particularly in Asia.
The basic body of Ship Launching Rubber Airbags consists of rubber layer, the synthetic cord reinforced rubber layer, which is a cylindrical airbag with hemispherical heads at both ends. All of these are vulcanized together and then compressed inside the air to make it roll.
The main supporting part of the slider is the air bag (hereinafter referred to as AB). The ship slides from the construction area towards the bottom of the vessel and inflates with the compressed air. The launch is carried out on an airbag which ACTS as a roller. Such a launch can be either uncontrolled or uncontrolled. In the latter case the transmission velocity is regulated by a traction mechanism located at the slip head.
The distance between the air bags depends on the light-ship, the length and width, but not more than 6 m from the bag centers. To install the bag the space at least 25 cm in height and width at least the half of the circumference of the air bag is required.
Air bag (hereinafter - AB) for upgrading and launching of vessels and dragging heavy dimensional structures with flat basis (without protrusions). Also suitable for use as a pneumatic jack. Pneumatic bags are intended for ship transportation, repair and painting.
The main technical parameters
- Inner diameter of the cylinder - bag 500 to 2000 mm;
- Length of the cylindrical part, 3 000 to 14 000 mm;
- Maximum working pressure in the bag, 0.4 to 4 kg / cm2 ;
- Maximum weight carrying capacity of the bag, 6 to 800 tons;
- Number of cord layers 3 to 14 pc ;
- Operating temperature range from - 10 to + 60 ° C .
Technical parameters of pneumatic bag (AB) may vary depending on customer requirements.
The Ship Launching Rubber Airbag consists of a rubber-cord shell with tapered ends.
Pneumatic bag has two threaded bushings on the tapered ends, one of them is connected to the pressure control unit and the valve for the compressed air, another end is equipped with eyebolt to drag the bag during the operation.
AB may be operated at the temperature range from -10 ° to + 60 ° C, with the media: river and sea water, industrial water, weak acid and alkaline solutions. The outer rubber layer protects the bags from abrasion and other external influences. This layer has high disruptive strength, withstand a load in harsh operation environments.
The rubber compounds and rubber-coated cords for bags are made in our own preparatory workshop of the high quality raw materials. Control of raw materials and rubber compositions is carried out in the laboratory of the enterprise. The formulation of rubber compounds is constantly being improved. This allows to improve the wear resistance and abrasion of the rubber, its performance characteristics, to make it suitable for each customer individual need. Because of the peculiarity of AB-manufacturing technology the incomplete airbag airtightness is allowed.
It can be used both by large and small shipping and ship repair facilities, oil and gas, nuclear power, aerospace, railway industry enterprises, bridge-building organization, road building companies, rescue officers. In practice, a bags with a diameter of 0.8 ... 2.0 m, effective length 6 ... 18 m and a total length of 7 ... 21 m, with an operating pressure of 0.07 MPa ... 0.24 are used. Airbag dimensions and specifications can be changed at the request of the consumer.