On May 20th, 2011, the Ministry of Public Security Fire Department focused on key scientific and technological projects in 2010: the city's main battle truck chassis project was completed in Beijing. This project was led by the Fire Bureau of the Ministry of Public Security. China FAW Group and Jilin Provincial Public Security Fire Brigade jointly developed successfully over a period of more than one year. After review by domestic automobile manufacturers, firefighting and other industries, it was unanimously considered that the project met the technical targets set in the project task book and met the needs of the public fire fighting and fire fighting rescue in the city. It was the first generation of the city's main battle fire engine developed independently by China. The chassis filled the gaps in the domestic market and the overall performance of the chassis reached the technical standards of similar foreign products. The successful development of the chassis will have a positive and far-reaching impact on the level of fire truck manufacturing in China and the improvement of the fire fighting and rescue performance of fire engines.
Since the beginning of the 21st century, China’s firefighting equipment construction has developed rapidly. By the end of 2010, the public security fire brigade had equipped more than 21,000 fire engines of various types, of which more than 14,000 were fire fighting fire engines, accounting for 67% of the total number of fire engines. It is the core vehicle for the fire-fighting and rescue of the public security fire-fighting force and plays a crucial role in successfully completing the task of fire-fighting and rescue. However, with the continuous development of China’s economy and society, various types of hazards such as high-rises, underground buildings, and petrochemical enterprises are increasing. The fire load is gradually increasing, and higher and higher requirements are placed on fire fighting and rescue work. There are restrictions on the strength of duty, public security fire-fighting units equipped with fire vehicles must gradually change from quantitative models to quality-effective models.
While adjusting the structure of fire-fighting vehicle equipment, it is increasingly important to increase the combat capability of bicycles. For a long time, China's urban main fire engines have been refitted with common commercial vehicle chassis. Due to dismembered modification methods, the integrity of the original chassis has been severely damaged, leading to a decrease in safety and reliability. At the same time, these vehicles have poor adaptability for modification and driving. The problems such as the narrowness of the room, inconvenience of getting on and off the train, etc. severely restricted the ability of the public security fire-fighting force to fight fires and participate in other disasters.
In 2009, experts from the Ministry of Public Security Fire Department organized a discussion with FAW Group on the development of the chassis of fire engines. In conjunction with the special construction of fire fighting equipment of the Jilin Fire Corps, it was decided to promote the joint development of a chassis for fire engines by the FAW Group and the Jilin Fire Fighting Corps. The project was established at the Ministry of Public Security Fire Department. In order to ensure the smooth development of the project, FAW Group has invested a large amount of manpower and material resources, has participated in nearly a hundred technical personnel, has invested more than RMB 60 million in project research and development, and has a production preparation cost of more than RMB 40 million; Jilin Fire Fighting Team actively cooperates to provide demand support and technical guidance, greatly reducing The development process.
During the research and development period, under the direct participation of the Fire Bureau of the Ministry of Public Security, the R&D team has carried out the investigation of the requirements of the troops, the investigation and investigation of foreign fire trucks, the overall plan for soliciting opinions, the preliminary demonstration of the chassis, prototype production, comprehensive performance testing, and small batch testing. Production and other work. During the R&D period, the company overcame many difficulties and trial-produced prototypes, prototypes and pre-production prototypes for a total of more than 20 prototypes in 3 rounds and developed dozens of sets of various types of molds. During the test, the total mileage of the prototype vehicle was nearly 200,000 kilometers, and the performance and reliability tests of the prototype test were successfully completed.
The test results show that the overall design of the chassis is reasonable, outstanding performance, high reliability, and achieved the expected design technical indicators. At present, FAW City's main fire truck chassis has been finalized by the end of 2010, has passed the national 3C certification, and has a mass production capacity.
FAW City's main battle fire engine chassis design process bold innovation, many technologies for the first time in the country to use, to fill the gaps in the domestic, compared to previous commercial chassis fire engines have the following salient advantages:
First, the engine power has been greatly improved. The twin-axle 19-tonne load chassis can be equipped with a 260-420-horsepower high-horsepower engine. The specific power and system reliability have been greatly improved, and a high-power water pump can be selected.
The second is to increase the intercooler and radiator, significantly improve the reliability of the fire truck parking operation for a long time, the test vehicle successfully completed the 48 hours continuous operation test of the pump's standard operating conditions;
Thirdly, the chassis suspension adopts a structure with few leaf springs and transverse stabilizer bars. The vehicle has a low center of gravity and strong anti-rollover ability, which can not only meet the requirements of long-term full load of fire engines, but also ensure driving comfort.
The fourth is to use the front disc rear drum brake, increase the friction plate diameter and brake adjustment arm length, shorten the braking distance, control more sensitive and reliable, improve driving safety;
The fifth is to highlight the humanized design to meet the ergonomic design requirements, such as the use of a frame-type structure of the spacious integrated cabin, and stepping, seat, occupant room height, front window view, on the armrests, rearview mirror Others have been optimized to give firefighters unprecedented comfort, convenience and safety.
Sixth, the automatic transmission is adopted, which not only significantly improves the vehicle's acceleration and other handling performance, but also significantly reduces the damage to the engine and the drive train caused by human factors such as bad driving habits.
Seventh, the car is the only chassis in the domestic fire engine chassis that uses the CAN bus to control the key components of the entire vehicle engine, transmission, and water pump. This facilitates the integration of communication information and lays a solid foundation for building digital fire engines in China.
Eighth, the communications command system was integrated and equipped with equipment such as on-board radios, alarms, long-distance communication equipment (vehicle terminals), on-board computers, and liquid crystal displays. It was equipped with an inverter power supply to fully meet the requirements of modern fire fighting operations.
At the same time, due to the adoption of the frame-type skinned cabin structure, the cab of commercial vehicles is more convenient for retrofitting and serial product development than the traditional stamped structure commercial vehicle cabs. Its features such as low conversion cost, small damage to the original chassis, and flexible and convenient deformation are common to commercial chassis. Comparable.
FAW City's main fire-fighting vehicle chassis has a high technological content, driving comfort, compared with foreign fire truck special chassis has a high cost-effective, access to a large number of fire engine conversion companies and firefighting forces of all ages, Hunan, Jilin, The Heilongjiang, Shandong, Liaoning and other corps have already ordered more than 100 units and they can be used by troops during the year. Under the guidance of the Fire Bureau of the Ministry of Public Security, FAW Group has begun to develop series vehicles while improving existing vehicles. It is believed that with the continuous improvement of the chassis for fire engines, it will not only be possible in the domestic fire engine manufacturing industry. Occupy a pivotal position, the future will also go abroad and occupy a place in the international chassis market for fire engines.
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