Two Weeks Alone Zhou Carriage Constructed To Explore

The invention and use of the vehicle is a millstone on mankind's since and technology history.The oldest ancient carriage was be found in Sumer the Two River drainage area in the world. It' s about 5000 years to date. In china, the oldest carriage rut was be searched in Yan Shi Shang City which belongs to the early period of the Shang Dynasty. While the ture of the two-wheels carriage vestige is later than the 13th Century B.C. in china. Up to date, the two-whlees carriage' s creation place and dissemination way aren't get a unamious agreement. However, the carriage should have been used in the late years of the Xia Dynasty's. Its reasonable composition was superior to other countries in the world based on the special technology form. As far as the shape is concerned, China' s ancient carriage has it's own special traits.There are one heng, two yokes, one hitch, two wheels, long wheel hub,many spokes and so on on the carriage. With the development of science and technology, people add some woods to the axletree under the box in order to balance the box which can also protect the axle and preclude the wheel hub inside slip. Because realize the wheel is the key part in the carriage,people make and install more meticulous such as how to protect the wheel, how to make the wheel spoke and hub and so on which solve a series of questions such as the balance force, absorption of vibration force, frictional force and other force types when the carriage is runing. With the development of structure technology, the carriage shape have been simplicity and diversification since the Spring-Autumn and Warring States periods. At last, the one hitch carriage was displaced by the two hitchs carriage in the Han Dynasty. From the one hitch carriage structure history we can see the Chinese people's handicraft technical level before Qin Dynasty which reflects the ancient people how to know the objective laws around the external world in some extend.