Underground mine cars are common transportation tools in mines and are widely used in coal mines, metal mines and other fields. In coal mines, underground mine cars are used for coal mining and transportation. The basic functions of mine carts include loading, transportation, unloading, etc., and with the continuous advancement of technology, the application of underground mine carts is also constantly developing. According to different use environments and transportation needs, underground mine carts can be divided into various types, including electric mine carts, battery mine carts, traction mine carts, etc. Different types of mine carts have different characteristics and scope of application. With the development of automation technology, the degree of automation of underground mine cars has also been continuously improved. More and more underground mine cars have realized autonomous navigation, intelligent control and other functions, which greatly improves the efficiency and safety of transportation. However, the operating environment of underground mine cars is still complex. The application of valuable unmanned technology makes operating mine cars without the supervision of operators, which also brings more safety hazards to underground mine cars, such as spontaneous combustion risks.

Spontaneous vehicle combustion is a relatively common vehicle safety accident. The spontaneous combustion of a vehicle not only causes property losses to the owner, but may also cause casualties. Because the environment of underground mine cars has the characteristics of high temperature, high corrosion, widespread coal dust, and narrow mine tunnels with poor ventilation, deflagration, flashover or even explosion may occur after spontaneous combustion. Poisonous gases may also be produced, which greatly increases the number of fire rescue operations. Therefore, the economic losses and social impact caused by the spontaneous combustion of underground mine cars are greater than those caused by the spontaneous combustion of ordinary vehicles. Generally, spontaneous combustion of underground mine cars is often caused by factors such as fuel, circuits, wear, and high temperatures caused by continuous and uninterrupted operations.

The mining vehicle automatic fire extinguishing system is a purely mechanical self-starting fire extinguishing device developed and designed based on underground mining fire protection experience. Its structural and technical characteristics are:

Single pipeline system, no worries about redundant lines;

Made of stainless steel, resistant to high temperatures, earthquakes and corrosion, and durable;

The components are small in size, take up little space and are flexible to install;

Targeted design can be carried out for different parts of different mine cars;

The most important point is that the system is a non-electric and voltage-free system, which is not bound by the power supply, has more stable performance and safer fire extinguishing. This system currently has application cases in mining companies around the world, and because of its simple installation, reliable performance, and fully automatic operation, it is used in support trucks, frame transporters, hydraulic excavators, loaders, etc. The installation volume of industrial and mining vehicles such as scrapers and wide-body dump trucks is increasing year by year, and it has successfully become a standard fire protection product for heavy-duty mobile equipment in the mining field.

This series of automatic fire extinguishing systems include temperature-sensitive fire source detectors, self-starting devices, early warning devices, fire extinguishing agent storage tanks, fire extinguishing pipe lines and sprinkler device modules; the operating principle of the entire system is to install in flammable parts such as vehicle engine compartments. The temperature-sensitive fire source detector (triggering temperature based on different space preset values) continuously detects the real-time temperature in each space. When the trigger temperature value is detected, the early warning device and the self-starting device are immediately activated through mechanical linkage, and then the system Release fire extinguishing agent to extinguish the fire. The defense of the entire system is more comprehensive, and fire extinguishing is more accurate and effective, which can reduce the probability of mine car fires through proactive prevention. It can be promoted and popularized on heavy mobile equipment in various fields such as petroleum, ports, mines, agriculture, forestry, and airports.