Railway flat carts are battery-powered. The power supply mode can also be selected according to the needs, such as battery power supply, rail power supply, bus power supply, cable drum power supply, diesel power supply, etc. Heavy rail transfer trolley, also known as electric flat car, electric flat car, tram, crossover, electric rail car, ground climbing car, etc., is a kind of electric rail transport vehicle in the factory, first of all, it is a kind of rail-type transport vehicle, which needs to lay tracks on the ground, and the track is generally an I-shaped surface contact rail; secondly, it is an electric vehicle that drives automatically under the drive of the motor reducer. Third, the heavy rail transport trolley flat-powered industrial truck is a flat car with a flat surface and no hatch cover. In special cases, it is possible to be uneven without a hatch.