The electric power engineering vehicle is a special vehicle that specializes in repairing power grids and transportation operations. Its sign is the yellow body, which is very conspicuous. The side is written with several black letters on the power engineering vehicle. With the development and progress of science and technology, pure electric power engineering vehicles have also appeared and have been put into use. Here's a new power engineering vehicle, the electric battery engineering vehicle, which has just been launched in recent years. It will replace the traditional internal combustion engineering vehicle and is widely used for the shunting, line maintenance, and rescue traction of the road. It is called the subway "nanny."

The subway project maintenance vehicle is used in the construction period of the subway and transports a large amount of materials, equipment and materials to various construction sites. Each subway line must be equipped with a certain number of subway maintenance vehicles and testing vehicles. The original subway maintenance vehicles were diesel locomotives as the main traction power for transportation and were gradually replaced by electric locomotives in the 1980s. In 2009, a battery-powered integrated test vehicle set appeared. The advantages of this type of electric battery construction vehicle are: 1. Environmental protection, avoiding smoke, dust and exhaust gas pollution to the city, and improving the working environment of the employees and the living environment of the surrounding residents. 2, energy saving, using direct conversion of energy, high energy conversion efficiency. The heat accumulation in the tunnel is reduced, and the heat load of air conditioning and ventilation is reduced. 3, low noise, the use of AC power transmission system, as much as possible the use of ventilation equipment, greatly reducing the locomotive noise. 4. It is easy to maintain, adopts the same technical route as the subway vehicle, and only needs the same technical platform as the subway vehicle during maintenance to simplify the maintenance and repair platform and simplify the maintenance section management. 5, the use of computer control technology, reliability and availability, easy maintenance, less resource demand, while achieving low constant speed control, high control accuracy. 6, the use of longevity, up to 30 years, and the life of internal combustion engineering vehicles is only 12 years. 7. The life cycle cost is low. Compared with an electric power engineering vehicle with the same horsepower, the lifecycle cost of the electric battery dual-purpose locomotive will be more than 7 million yuan more than that of the diesel locomotive.

Most of the traditional subway engineering maintenance operations use internal combustion engineering vehicles as traction power. Diesel-fueled internal combustion engineering vehicles generate large amounts of exhaust gas during tunnel operation, affecting the physical and mental health of workers, and also causing damage to the tunnel's electrical equipment. The electric battery engineering vehicle is powered by clean energy to achieve zero pollution and zero emissions. The overall structure of the electric battery construction vehicle generally adopts double outer corridors. The structure of the single driver's cab is mainly two-axis and four-axis. It is a traction power equipment developed specifically for the maintenance of subway lines and other tasks. China will strongly recommend the use and development of this vehicle.

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