Later, someone put forward an idea: put two wheels in a straight line one after the other. Of course, this idea was opposed by many people as soon as it was put forward. 15th century, Italy's great master of art and famous scientist? Finch once designed a "bicycle" with two wheels in a straight line, and drew the design drawings. In the design, a chain is actually used to drive the rear wheel, similar to the principle of modern bicycles.
At first, bicycles were not made of steel like bicycles today, but made of wood.
1790, Count Gibrak of France first made a wooden bicycle. His wooden bicycle has a simple structure, only two wheels are connected by a wooden stick, and nothing else.
When riding a bicycle, both feet land on the ground, and both feet push hard on the ground, and the car turns forward. The car is going to turn, and the cyclist has to temporarily move the front wheel. 18 17, German delaisse invented a wooden bicycle with handlebars, which solved the steering problem of the bicycle and made it much more convenient to ride. 18 13 years, delaisse invented a rolling bicycle. The car he made has a wooden frame with a seat in the middle, a handle in front of the seat and two rolling wheels behind the wooden frame. When riding a bicycle, hold the handle and keep pedaling with your feet, and the two wheels will quickly roll up and move forward quickly. Delaisse named his car "Treadmill", which is also one of the earliest bicycles in the world.
182 1 year, an Englishman made a car to move by turning the front wheel by hand, and soon he changed the way of moving to pedal. 1830, the French government first decided to improve bicycles in delaisse as a means of transportation for postmen. As a result, the first bicycle serving people's lives appeared in the world. 186 1 year, Buel? Missons and his son made a bicycle with pedals. The crank was directly fixed on the front wheel, and the wheel was driven by the crank.
1869, Renault bicycle was born. This kind of bicycle uses steel instead of wooden wheels and spokes to tighten the wheels. The frame is also made of steel pipes, and the wheels are modified with solid tires. This kind of car is much lighter than the previous bicycle.
1888, Englishman Deng Lupu and his father invented pneumatic tires together, which improved the practical value of bicycles and quickly developed into one of people's favorite means of transportation. Bicycles are used as portable means of transportation for men, women and children.