The old man in the countryside invented the wooden bicycle, which can travel more than ten kilometers without 1 nail. What is the principle?

He Yong, a farmer from Liu Liu, Kongtong District, Pingliang City, has only a junior high school diploma, but he likes carpentry since he was a child. In his spare time, he invented and made a "wooden bicycle" from the waste materials of walnut and elm. This bicycle can run for more than ten kilometers without a nail, mainly thanks to Master He's wooden linkage shaft. Only by using this principle can his bike move.

The wooden bicycle made by Master He is about the same size as an ordinary bicycle. It is about1.8m long and 0.98m high. Can ride, the carrier is about 200 kilograms.

This bike is handmade by Master He. It consists of two wooden wheels and pedals, a wooden linkage shaft and a wooden bicycle bearing beam, and all the accessories used are made of wood. Moreover, bicycle accessories are all connected by ordinary woodworking skills, and iron tools, such as nails, are not used, which brings the traditional woodworking skills to the extreme.

It took more than two months for this wooden bicycle to go back and forth. During this period, several versions were designed, and after repeated disassembly and assembly, it became what it is now. Master He said that the bicycle should be further improved. He wants to add a wood carving faucet at the front end of the bicycle and a loading basket at the rear end, and then change the linkage shaft into a gear shaft to achieve the same function as modern bicycles and surpass ordinary iron bicycles in speed.

To tell the truth, the wooden bicycle made by Master He is very ornamental and artistic. Compared with iron bicycles, wooden bicycles can better reflect the uniqueness of carpentry, which is also a part of China's traditional culture.