What is the drum car

Drum Trucks, a military configuration in the ancient war convey a movable and morale of the military orders. Traction by the dozens of people, placed on top of the diameter of two to three meters of a drum, gong rang several, one person loading drum, gong number of names. Drums can sound pass 10 years, usually placed just behind the attacking forces, and to follow the movement of troops together to convey morale and military orders. Drum Lifter is the carriage of the Han Dynasty, the car has a wooden stand, hold the hands of drums whip. Each carriage reaching a certain number of years, will be waving wooden drum Chui, in front of the snare drum sounded. In fact, it works is simple: wooden hand cable attached to a gear, gear and other gear attached, forming a reduction gear set, and finally attached to the wheel. Start the vehicle, the wheels on the drive gears, gear drive Muren, Muren then beat gongs and drums. But at the time it was quite scientific and technological content of the invention, even now the taxi is based on the principle of recording drum car counting, of course, this is also one of the top ten inventions in ancient China.