The role of assault boat in rescue rescue

1 , Concepts, Roles and Features

20 rescue inflatable assault boat

In military terms. 2. An assault boat is a portable system used by infantry detachments to cross rivers. Can be used for water communication. Reconnaissance, patrolling and life-saving. Assault boats are usually between 32m and 12m long . 1 wide. 25m to 3 . 1m . Load capacity 400kg to 4710kg . No-load speeds up to 102km / h . The assault boat is driven by water on the boat and is usually equipped with an outboard engine as power. Paddles can also be used. The assault boat body material is made of glass fiber reinforced plastic ( abbreviated as GRP . It is a conformable material with a polymer resin as a matrix, glass fiber as a reinforcement, commonly known as "glass reinforced plastic" ) , polyester fiber cloth ( commonly known as PVC). folder mesh), plywood and rubber cloth.

In recent years, China's floods and disasters, such as earthquakes and mudslides, have occurred from time to time. Assault boats are used as the main means of transportation during rescue operations. With fast speed, small size, easy and flexible operation, easy to transport and so on. It has played an important role in all emergency rescue operations. E.g. During the flood fighting and rescue in 1998 , the troops put more than 1,170 boats. It played an important role; in 2008 ". 512" Wenchuan earthquake, the roads completely interrupted. Land and air rescue were blocked. Two assault boats with armed policemen successfully entered the epicenter area from the waterway.

The main role of the assault boat lies in

1) Delivery personnel. Transport rescue personnel to disaster areas to carry out rescue work. Timely transfer of affected people and wounded.

2) Delivery of supplies. Transport urgently needed food, drinking water, medicines, tents, life-saving equipment and other materials in the disaster-stricken areas.

2 , there is insufficient

The main problems of assault boat in the practical application of rescue rescue are:

1) The rubber assault boat is susceptible to overturning hazards in turbulent water flow. It is impossible to locate and rescue persons falling into the water in the turbulent flow.

2) The rubber assault boat has less carrying capacity and the total amount of transport personnel and materials is small. It is difficult to meet the needs of rescue and rescue operations in a timely manner.

3) The fiberglass assault boat has a large weight. Larger size. Flexibility is not enough. Inconvenient handling and storage.

4) Rubber materials tend to age and degrade in harsh environments. FRP materials have poor wear resistance and are easily damaged by collisions with sharp and hard objects in floodwaters.

3 , the solution

1) Development of new assault boats or attachments

Whitewater rescue. At present, the assault boat can not be positioned for rescue in the rapids, often using the method of throwing a rope to rescue, and the rescue effect is poor. Develop a positioning device. Installed on a rubber assault boat. The lower part of the device is immersed in water, and its power plate can form a certain angle with the direction of water flow. The angle can be adjusted by the upper steering wheel of the device. As a result, the power board can obtain certain power from the flowing power, and with other equipment, it can realize the positioning of the ascending boat in the upstream or in the torrent. Efficient rescue. Avoid flooding.

Prevent overturning. Against the disadvantages of ordinary assault boats that are easy to overturn and overturn in stormy waves. A unit developed an inflatable device. Installed in the back of the assault boat, utilizing its weight and structure. Correct the center of gravity of the assault boat. To enhance the stability of the assault boat. Use the device for buoyancy. The assault boat is not easy to tip over. And can self-righting, even if the ship can also quickly return to its own floating state. This device can reduce the accidental overturning of the assault boat. Effectively protect the life safety of occupants in rescue operations.

Advanced performance. The literature puts forward the required performance of the new assault boat. Such as collapsible. Can airdrop and so on. And introduced a self-inflatable assault boat that can be used for airdropping. It can be dismantled for preservation and flexible transfer. The inflatable buoyancy tire around the boat body can effectively prevent overturning and has a good anti-shock buffer effect.

With power. Complex terrain features for the disaster scene. Self-propelled assault boats with power should be developed to quickly adapt to a variety of terrain. 2. It refers to an amphibious off-road vehicle, a crossover product. It is very effective in disaster relief. However, problems such as low power, slow speed, and poor resistance to wind and waves must be further addressed.

A unit is studying an amphibious high-speed all terrain vehicle, see Figure 2 . Strong power performance. With the lake, shallow sea, land and terrain under the complex conditions of driving ability and airdrop. You can perform tasks such as search and rescue in disaster relief.

2) Adopt new transportation tools

In the emergency rescue, small boats such as rubber boats and assault boats can play a role. But it is very insecure in the rapids. Not retrograde. Make rescue work more difficult. This requires the use of new types of transport. Such as hovercraft. The hovercraft is novel and different from ordinary boats. Not limited by terrain, suspended water surface, ground, shallows, swamps. Can grasp the true feelings in time. With faster speed, more personnel and materials can be taken and used for disaster relief. In Japan's " 311 earthquake and tsunami" disaster relief. March 17, 2011, the Japanese Self-Defense Forces dispatched LCAC hovercraft involved in large-scale disaster relief. In recent years. Changsha, Shijiazhuang, Shenyang. Hubei, Heilongjiang and other provinces and cities have spent huge sums of money on the introduction of foreign hovercraft for disaster relief. I believe that the hovercraft will play a significant role in the future disaster relief.

3) Development of assault boat loading and unloading device

For the glass fiber reinforced plastic assault boat is larger in size and weight, it is not easy to handle the situation. A unit developed a handling device. The device includes a lower base and a folding gantry crane. On the base composition. The lower base provides a certain height for the assault boat when loading. And let the base can quickly push the car. When the gantry crane works, the steel channel lying on both sides is turned into a simple gantry crane. On the base, three assault boats can be loaded to achieve rapid loading and unloading. And with a shock absorber. Increased security.

4) Use new materials to enhance performance

For the poor wear resistance of glass steel, polyester fiber cloth, plywood and rubber cloth and other materials are susceptible to aging aging problems. Abrasion resistant materials such as Spray Polyurea Elastomer ( SPUA) can be applied to the bottom of these materials . The material is anti-aging, anti-slip, anti-corrosion. Has good thermal stability. Long-term use at 120 °C

The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network.