What is the railroad car that rocked forward and backward as it appeared in Conan

In the mid-19th century, the railroads of Europe and the United States used a miniature unpowered locomotives - human railcars. A few decades later, this railroad car into China, people call it "hand crank car" or "hand-rolled car", "hand-guaranteed car". Before the founding of new China, shanhaiguan bridge factory manufacturing "hand crank car" have been sold to the domestic railroad lines. "Hand car" has four wheels, the use of levers, crankshafts, gears and other mechanical devices to drive, weighing about 200 kilograms, speed up to 20 kilometers per hour. "Hand-cranked car" is usually driven by four people, before and after the two people holding the bar handle with both hands up and down alternately rolling, the car can run forward.

"Hand-cranked car" in the operation of the line driving, the need to station scheduling "points", on the way in case of a train, must be "hand-cranked car" lifted out of the track, to avoid the and then continue traveling. This kind of manpower railcar structure is simple, lightweight, is the construction of public works, electric department and overhaul line equipment commonly used transportation tools. After the founding of New China, with the batch production of all kinds of internal combustion small railcars and the increase of train speed and density, "hand-cranked car" was quickly eliminated. By the 1960s, it was already difficult to see its figure. Later, people can only be individual railroads from the revolutionary struggle of the film and the Railway Museum, to appreciate its stature.