Seek the origin (history) of mountain bike.

Bicycles, also known as bicycles or bicycles, are usually small land vehicles with two wheels. It is generally driven by people riding on their feet and pedaling. Bi means two in English, and cycle means wheel. In Chinese mainland, Taiwan Province Province and Singapore, it is usually called "bicycle" or "bicycle", while in Hongkong and Macau, it is usually called "bicycle".

Many countries and regions think that bicycles are means of transportation, and they often need appropriate equipment, and even need to register their license plates with relevant government departments before they can get on the road. Some places require bicycles to use lights when driving at night. The Traffic Law of People's Republic of China (PRC) classifies bicycles as non-motor vehicles. In Hong Kong, bicycles are "non-motor vehicles" and do not need to be licensed, but when driving on the road, they must abide by the same traffic rules as motor vehicles.

history

1790 There was a Frenchman named Sifrak who loved to think. One day, he was walking in a street in Paris, because it rained the day before, and there was a lot of rain on the road, making it difficult to walk. Suddenly, a carriage rolled in from behind. The streets are narrow and the carriages are wide. Sifrak hid and hid. Fortunately, he was not hit by a car, but was splashed with mud and rain. When others saw it, they felt sorry for him. They were so angry that they wanted to stop the carriage and negotiate rationally. Sifrak murmured, "Stop shouting, stop shouting and let them go." The carriage has gone, and he is still standing on the side of the road. He is thinking: the road is so narrow and there are so many pedestrians. Why can't we change the structure of the carriage? We should cut the carriage in half and turn the four wheels into front wheels and rear wheels ... so he thought, go home and design. After repeated experiments, 179 1 built the first "wooden horse wheel" car. This car has two wooden wheels, a beam in the middle and a bench on it, like a toy. Because the car has no transmission chain, the car can move slowly by pedaling hard with the rider's foot. Moreover, there is no steering device on the car, so you can only go straight without turning. After going out for a while, you will be very tired and sweaty.

New things that have just appeared are always not so perfect. Sifrak was not discouraged, and he continued to look for ways to improve. Unfortunately, he died of illness soon.

In 18 18, a German ranger named delaisse walked from this forest in the east of the village to another forest in the west of the village every day. He thought: if people sit in the car, stop and go, do whatever they want, isn't it very chic? Delaisse began to make wooden trolleys, similar to Sifrak's trolleys. But adding a handlebar to the front wheel to control the direction can change the forward direction. However, cyclists still have to pedal on the ground with both feet to push the car forward. When delaisse rode out to do experiments, he was laughed at by many people along the way. Nevertheless, he still likes this "cute little pony" created by himself.

1840, the British blacksmith Macmillan got a shabby "lovely pony". He installed a crank on the axle of the rear wheel, and then connected the crank with the front pedal with a connecting rod, and both the front and rear wheels were made of iron, with the front wheel being bigger and the rear wheel being smaller. When the cyclist steps on the pedal, the car will automatically move up and go forward. In this way, the rider's feet really leave the ground, and the alternating pedaling of the feet becomes the rolling of the wheels, which greatly improves the driving speed. 1842, Macmillan got on this car and ran 20 kilometers a day. Because of carelessness, he stepped on the car too fast and knocked down a little girl on the road, so he was caught by the police and fined. The charge is riding a bike savagely.

186 1 year, the French Michaux and his son were originally carriage mechanics, and they installed rotatable pedals on the front wheels; The seat of the car is mounted on the front wheel, so unless the riding skill is particularly superb, the handlebar will not be stable and will fall off. They dubbed this two-wheeled vehicle "bicycle" and exhibited it at the Paris Expo in 1867, which opened the eyes of the audience.

1869, after seeing French bicycles, Renault, England, felt that bicycles were too heavy and began to ponder how to make them lighter. He used steel spokes to tighten the rim as a wheel; At the same time, the frame adopts thin steel bars, and the front wheel of the car is big and the rear wheel is small. Thereby reducing the weight of the bicycle itself. From Sifrak to Renault, the five kinds of bicycles they made are very different from modern bicycles.

The real modern bicycle was born in 1874. This year, Luo Song, an Englishman, ingeniously fitted his bicycle with chains and sprockets, and used the rotation of the rear wheels to propel the car forward. But the front wheel is still big and the rear wheel is small, which looks uncoordinated and unstable.

1886, British mechanical engineer stahly designed a new bicycle style from the perspective of mechanics and kinematics. Bicycles are equipped with front forks and brakes, and the front and rear wheels are the same size to maintain balance. The diamond-shaped frame is made of steel pipe, and rubber wheels are used for the first time. Stahly not only improved the structure of bicycles, but also transformed many machine tools for producing bicycle parts, which opened up broad prospects for the mass production, popularization and application of bicycles, so he was called "the father of bicycles" by later generations. The bicycle model designed by stahly is basically the same as the current bicycle.

From 65438 to 0888, Irish veterinarian Dunlop got inspiration from treating flatulence in cattle. He glued the rubber hose used for watering in his garden into a circle, pumped it up, put it on the wheel of his bicycle, and went to participate in the bicycle race. He is the best among them, which aroused great interest. Pneumatic tire is an epoch-making initiative in the history of bicycle development, which increases the elasticity of bicycle and will not vibrate because of uneven road surface; At the same time, it greatly improves the driving speed and reduces the friction between the wheels and the road surface. This fundamentally changes the riding performance of the bicycle and improves the use function of the bicycle. Therefore, from the end of 18 to the beginning of the 20th century, it took about 200 years for the invention and improvement of bicycles, and many people struggled for it before it evolved into this riding mode.