His Trojan bicycle was officially patented in Germany and France in 18 18, becoming the originator of bicycles. This bike is made of wood and pedaled on the ground by people's feet. Now it looks like a wooden toy wooden horse, which is several times heavier than the current iron horse. The invention of this wooden bicycle has made great contributions to mankind.
The earliest wooden horse car could not control the direction, turn and go straight without the handle, and the rotation and stop of the wooden wheel were completely controlled by double pedals. Dulles put the wooden frame and handle on the car, which makes it more convenient to turn or move, without constantly kicking on the ground, not to mention the moving direction of the car; This car is used as a toy horse.
18 19 Britain and Germany also set up the earliest cycling school in the history of cycling to teach people how to ride a toy horse-love horses; At that time, there were no cars and trains, and France, Britain and the United States, which used horse-drawn carriages as means of transportation, formed a trend of competing to ride toy horses. People step on toy horses and pedal hard. The faster the speed, the more stable the car becomes. This trend of riding toy horses has lasted for about ten years in Europe and America.
18 18, the British blacksmith and mechanic, Derning Johnson, took the lead in replacing wood with iron and the skeleton of wheels with iron. Then he founded two schools in London to train people to learn and ride bicycles. Later, the British called this interesting car hobby hors. This iron car can be driven by skilled and experienced people at a speed of 13 km per hour.
1830, the French government officially decided to use toy horses as a means of transportation for postmen to deliver letters; 1839, Thomas Macmillan, a blacksmith in Scotland, England, improved a good horse. He has been thinking about how to sit in the car and let the car drive forward without touching the ground. Finally, he designed a bicycle whose front wheel is bigger than the rear wheel, and the rear wheel has pedals and poles to drive the car. When riding, it is no longer necessary to step on the ground and turn the wheels to move forward, which is also a great progress in the invention of bicycles.
186 1 year, michanx, a French doll manufacturer, invented a front-wheel drive bicycle, which directly added pedals to the front axle, so that it could ride all over Europe. They speculate that the key to a faster car is the size of the wheels. The bigger the wheel, the longer the rolling time and the faster the speed. 1867, michanx established a company and started mass production.
Due to the widespread use, bicycles began to be mass-produced. Later, the manufacture of bicycles was improved by this kind of car. At that time, Paris, France was the manufacturing center of bicycles. This bicycle was used in the first bicycle race held in France in 1868. 1869, the French invented a training rod to drive the rear wheels. At this time, the bicycle is a complete version.
1870, James stahly of England designed bicycles with large and small wheels. At that time, the diameter of the rear wheel was only 90 cm, but the diameter of the front driving wheel exceeded 125 cm, and the driving speed was quite fast. At the same time, the French also made the same improvement, changing the material of the car from wood to iron and rubber parts, which are also front-wheel drive, and the diameter of the front wheel is several times larger than that of the rear wheel. Riding this kind of car is as high as riding a horse, but it is dangerous to accelerate downhill, easy to fall, and it is also dangerous to get on and off.
1869, the French invented the chain to drive the rear wheel, and a safe bicycle appeared; 1874, James Starr Lei Faming of England invented the wheel with steel wire and made it into a tricycle, which became the favorite of ladies at that time. 1885, the British improved the bicycle to the size of the front and rear wheels, and it was driven by a chain, which was called a Rove bicycle. This model is the prototype of modern bicycles.
1888, an Irish veterinarian (john boyd dunlop) invented the rubber pneumatic tire, which is a very important invention in the history of bicycle development. It not only solves the most uncomfortable vibration problem of bicycles for many years, but also improves the speed of bicycles a lot. In fact, some people have invented rubber tires before, but rubber was not widely used at that time because it was very expensive.
Since the German baron invented the first bicycle, many people have been developing it continuously, and now the bicycle has been completely finalized. Compared with bicycles in the past, the biggest progress is that the height is lower and the material is better; In terms of transmission, the rear wheel is driven by the training rod, which increases the stability of the car.
/kloc-The cross-country mountain bike invented by a group of American hippies in the 1970s turned the road bike used for racing into a road bike with thick tires and straight handles, and became the latest outdoor leisure sport for modern people. Quick-release front and rear wheel devices are convenient for bicycles to carry or carry with the car. The car body is light and there are many peripheral devices, which makes cycling become a sport and leisure, and the sense of showing off and superiority of cycling arises spontaneously.
Trojan horse has gradually evolved into an iron horse, and the materials used have also changed from wood to iron, steel pipes, molybdenum-chromium alloys, titanium alloys and carbon fiber materials, which are getting lighter and lighter. Bicycles can also be divided into road bikes, mountain bikes, station wagons, ordinary cars and even electric bikes, which meet the dual requirements of modern people for comfort and versatility. The performance of bicycle research and development and human body integration is becoming more and more important.