Electric flat cars, also known as level cars, trolleys, span cars, electric rail cars, ground crawlers, etc., are a kind of rail-based electric transport vehicles in the factory. They need to lay tracks on the ground. The tracks are generally I-shaped. The surface is in contact with the track; secondly, it is an electric drive vehicle, which runs automatically under the drive of a motor reducer; thirdly, it is a flatbed vehicle with a flat surface and no cover. In special cases, it can also be non-flat but without a cover, and the vehicle body has no steering wheel. There are only forward and backward directions (even if you turn, you still rely on the track to turn). This kind of vehicle has the characteristics of simple structure, easy use, large carrying capacity, not afraid of getting dirty or smashed, easy maintenance, etc. Because of its convenience, economy, practicality, easy cleaning and many other advantages, it has become a short-distance vehicle within the enterprise factory and between factories. A means of transport that frequently carries heavy objects at fixed points.
