What's the difference between mining battery locomotive and trolley locomotive?

Mining Electric locomotive is a kind of traction equipment for rail vehicle transportation. The power is to use the traction motor to drive the wheels to rotate, and use the friction between the wheels and the rail surface to make the locomotive run on the track. In this mode of operation, its traction is not only limited by the power of the traction motor (or internal combustion engine), but also by the friction between the wheels and the rail surface. There are restrictions on the slope that locomotive transportation can travel. The slope of the transportation track is generally 3‰, and the local slope cannot exceed 30‰. According to the structure, there are overhead electric locomotives and battery electric locomotives.

The overhead electric locomotive obtains electric energy from the circuit by means of the pantograph. When the electric locomotive is running, the pantograph slides along the overhead line. The power supply mode of the overhead electric locomotive is that the high-voltage cable drawn from the central substation supplies the three-phase AC power of the traction converter, which is stepped down by the transformer, and then sent to the converter equipment via the low-voltage cable to convert the AC power into DC. The positive pole of the DC power supply is connected to the overhead line conductor through the power supply cable, the contact point during the period becomes the power supply point, and the negative pole is connected to the track through the return cable, and the corresponding contact is called the return point. When working, the upper part of the electric locomotive running along the track obtains electric energy by contacting the overhead line with the pantograph, and the lower part uses the wheels to contact the track to form a loop to make the traction motor work, so that the electric locomotive can drive the mine car.

Battery electric locomotives are generally divided into 2.5T, 5T, 8T, 15T and other models. Among them, the 2.5T electric locomotive has three types: general type, safety type, and special explosion-proof type. Main features: small size, short wheelbase, compact and flexible, fast and reliable brake expansion, simple structure, easy maintenance, suitable for branch roadways and small mine transportation and small and medium mine shunting. The 5T explosion-proof special electric locomotive is divided into stepless and stepless speed regulation. Our factory first adopted the new technology of thyristor chopping speed regulation on the stepless speed regulation locomotive. Main features: The whole machine has a reasonable structure, reliable explosion-proof performance, smooth starting, and energy saving. The main technology has reached the level of similar products at home and abroad. The step-by-step speed regulation locomotive uses battery parallel motors in series with magnetic field weakening. The number of speed control stages is 7, and the car starts smoothly without obvious impact. The explosion-proof performance is reliable, the quality is good, the structure is simple, and the maintenance is easy. It is very popular among users. The 8T electric locomotive has a variety of models and voltage levels, and there are two types of safety type and special explosion-proof type. There are three types of 12T electric locomotives: ordinary type, underground explosion-proof special type, and ground engineering vehicle. It has the characteristics of large traction, high speed, and strong carrying capacity. The special explosion-proof type is suitable for high-biogas coal mines with an annual output of more than 1.2 million tons. There are two ways of speed regulation: chopping wave speed regulation or battery parallel series speed regulation. It can also adopt a double-ended driver's cab with good viewing performance. The 15T electric locomotive is an engineering electric locomotive specially developed for the construction of large tunnels, subways, and water diversion projects. This electric locomotive adopts resistance speed regulation and direct control: it has three braking methods: handwheel brake, resistance brake and air brake: V-shaped rubber spring is adopted, which can withstand vibration and impact in three directions: vertical, vertical and horizontal. . It has the characteristics of large traction, high speed and strong carrying capacity. Of course, there are more models of battery electric locomotives, such as the 30-ton, 40-ton and 55-ton battery electric locomotives.

In summary, we can know that the main differences between these two electric locomotives are:

(L) The power supply of the traction motor of the battery electric locomotive is a power box composed of battery packs that travel with the car, and the power supply system is relatively simple. The power supply of the traction motor of the overhead electric locomotive takes the traction network, the hammer crusher traction network and the traction converter form a more complex power supply system.

(2) As the power supply is different, its power supply voltage is also different. The power supply voltage of battery electric locomotives is generally below 200V, while the power supply voltage of overhead electric locomotives is generally not less than 250V.

(3) The protective conditions are different from the place of use. The power supply of the battery electric locomotive is generally made of increased safety, explosion-proof special, and explosion-proof type for mines. Other electrical equipment and various instruments are explosion-proof. The price of jaw crusher is mainly used in coal mines and other explosion hazards Places, as well as temporary lines and places where there is no traction network. The overhead electric locomotive is a general mine type, mainly used in non-explosive locations. Most of the non-coal mines used in our country are overhead electric locomotives.

With the development of science and technology, more and more technologies will be used for the development and innovation of electric locomotives. More types, more types of energy use, and more and better electric locomotive products will drive the development of the electric locomotive industry!