The origin of the word

the first time in the word, and is still in use. In 1790, a French name, with his mind he loved so much. One day, he walked on a street in Paris, because the day rained, Folding electric bikes a lot of rain, on the road is very bad. All of a sudden, a carriage jumped from behind, and the road is narrow, the carriage is very wide, the schiff, hide to hide but not knocked down by a car, or was spattered mud and rain. Others saw it, sorry for him, but also gas straight scold, want to shout the cart stopped, reasonable representations. The schiff, but murmured: "don't cry, don't shout, let them go." The carriage walked away, he was standing on the side of the road. He was thinking: the road is so narrow, pedestrians and so much, bike why can't the carriage structure changed? Should the carriage along the cut off half, before and after the four wheels to two wheels... He thought, so home will begin to carry on the design. After repeated experiments, in 1791 the first Three wheel bikes "Trojan horse" of the car made out. Before and after the car has two wooden car wheels, intermediate connecting beam, Ann on a bench, like a toy. Because the car hasn't drive chain, by cyclists foot pedal, the car can move forward slowly, but also no steering device, the car can go straight, don't turn, go out to ride soon tired covered in sweat. Just a new things is not so perfect. The schiff, don't lose heart, he continued to think of some way to improve it. Unfortunately, he died soon. In Germany in 1816, has a look man named Lin dera ismail, he from CunDong this forest, every day go to the village west of the other trees, so every year. He thought, if people sit in the car, stop-go, follow one's inclinations, not very natural and unrestrained? DE les starts to make wooden wheel car, with the schiff, made almost. However, on the front wheel and a control direction of traverse to the child, to change the way forward. But when the cycle is still want to use two feet, hit the stamped on the ground, rolling forward to push the car. When the DE les to ride a bike to go out, test, was laughed at by many people along the way. In spite of this, he is very like your writing the "cute little pony". A DE les when cycled around driving a carriage, the driver laughed at he said his car slowly, so he and the driver said: "your letter not letter I car faster than your carriage" and they two made a bet. Distance from CunDong to village west of a back and forth, results DE les is faster than the driver for more than an hour. In 1840, England's blacksmith McMillan, got a battered "cute little pony". He put the crank in the rear axle and then use join the pedal in front of the crank and connecting rod, and the front and back with iron, the front wheel, rear wheel small. When the cyclist pedaled pedal, the car will be on their own motion, ran forward. In this way, really make the cyclist's feet off the ground, with alternating feet trample move into the wheel rolling, greatly improved the driving speed. In 1842, the macmillan ride this kind of car, ran 20 km a day, due to accidentally hit the car too fast, hit a little girl on the road, which was caught by the police, and impose a fine. The charges are "wild ride". Bicycle in 1861, France michaud of father and son, originally profession is the carriage repairman, they installed in the front wheel can turn the pedal board; Top of the saddle seat frame of the car in front so that unless technology special superb ride a bike, or grasp the handlebars, will fall down from the car. They put the two rounds of car box (ossuary) dubbed the "bicycle" James, and exhibited in Paris in 1867, fair, let the audience an eye-opener. In 1869, Britain's Renault after watching the French bicycle, feel the car is too heavy, start thinking about how to put the bike done some light. He USES the steel wire spokes to tighten circle as the wheel; At the same time, the use of thin steel bar to make the frame, the front wheel of the car is bigger, the rear wheels. To reduce the weight of the bike itself. Since the schiff, has been to Renault, it made the five types of bicycles and modern bicycles difference is bigger.

the reason why China is called "the kingdom of bicycles"

Driver only one thousand title of "the kingdom of bicycles" registered in China is a myth, the reason why China is called "the kingdom of bicycles", because China is in the number of bicycle ownership and Three wheel bikes in the world. But most only stay in transport at this sense, the bike as leisure fitness is one of the few, where there is little to cycling level. Mention the tour DE France, Han Jiling clearly said China driver is apart from the tour DE France is still some distance, "at the moment we are only a few drivers in a foreign country club, Chinese drivers ring method in field, I think there is still a long way to go." And driver Li Fuyu also think according to the actuality of China bicycle to want to join the tour DE France also electric trike time, "China billions people only more than 1000 drivers, and France has more than 20 registered driver. Many foreign experts believe that China's driver is very lack of competition, exercise, play too little. In France, registered bike race every year, more than 10000, while China doesn't even have one percent." Giant bike bike - international online features: according to the daily mail reported, a Dutch art professional college students collected all kinds of vehicles with from his friends made a giant bike parts, he rode the two meters tall monster in road scene is enough to attract the attention of all people. Walter, 29, the Vatican's bush was a mechanical engineer, currently studying art in college. Walter like with different USES parts making machine "hybrids". Near the graduation, he decided to own hobby further extension, at the same time into the art factors, creating a "big guy".

Bicycle inflatable note right amount

Bicycle inflatable note right amount. Tires under-inflated, resistance increases, driving, outer tube wall on vulnerable to fracture; Inflatable foot, wheels lose elasticity, laboring heavily at tyre force is too large, tire in the cord layer are easy to be broken, shorten service life. In addition, don't ride a bicycle when stored for a long time, also electric trike have the gas played right amount. Can anoint, nor the sun exposure; Bike every coated with the paint coat in the car, not car wax polish, will drop paint; After the bicycle in the rain, with dry cloth blot moisture, prevent rust; To place such as axle, flywheel, front fork, pedal, often should add some Three wheel bikes or oil, flywheel should add some thin oil. The bike with kerosene wash once a year. Note bikes not stored near the heat, the place such as kitchen, coal stove, avoid carbon monoxide gas corrosion. Teach you tips: elastic first lock nut loose, pull brake, brake lining and the circle of the spacing for 3-5 mm, screw tight lock nut again, if the asymmetry of left and right brake lining, should hold is the front and back, or eliminate.so axial flap, brake fork or correction to stick with loose bicycle crank and axis, first find out which side is loose, and then under the loose on one side of the crank support rods, bars the crank pin, tighten the nut. The old car can change a bit bigger crank pin. Such as crank pin wear or crank pin hole enlargement, can be in between the circular arc of the crank pin and axial stick on the pad iron, to prevent loosening. 24 or27 section of transmission, it is usually use 26 tires, 15 to 18 frame, and the front fork with a shock absorber. Mountain bike, is only the general, all no road curved, no small wheels car cushion, people called the mountain bike. Careful friends can discover, mountain bike also have many differences, such as: some front fork shoulder, have a plenty of one shoulder; With the disc brake, V brake; Have a plenty of rigid frame, have a plenty of full suspension frame; Another popular point, some car looks very big, some very fine... In fact, they are all mountain bike, just use different.

Humanized design in the modern product design

Humanized design in the modern product design
Humanized design is to point to in the design process, according to the structure of human behavior, physiology, psychology and thinking mode etc., on the basis of the original design, optimize the design object, so as to make the audience feel convenient and comfortable. Humanized design pays attention to humanistic care, emphasis on respect for human nature. Humanized Three wheel bikes in the modern product design, mainly has the following several aspects: first, the embodiment of humanization design in product function (1) physical function of product use value is the primary material function. (1) the reason why people have the demand for products, it is because to get its use value, function. Good function for a successful product design is very important. Such as: supermarket Cargo bike cart rack design gratings, with children shopping can be a child on the inside, so that we can make shopping more convenient, easy and pleasure; To produce mobile phones nokia, according to different users (business people, housewives, etc.), introduced different types of products (intelligent mobile phones, music, etc.). 2. Mental function in the modern design, the designer will attach great importance to product affective, expelling wooden loneliness, mechanical products in the product into the vitality of life, to a certain extent, relieve mental pressure of the people. (2) that is to say, the modern product design should not only meet the basic needs of people, and want to meet

Multi-function folding bicycles design research and discussion

Multi-function folding bicycles design research and discussion
Multi-function folding bicycle design background and significance of the bike as a short walking and leisure tools is irreplaceable by other means of transport. But urban development lead to traffic congestion, vehicle storage area is insufficient, lack of bicycle parking places and stolen phenomenon is very serious situation, pressing for bicycle take up less space, easy to carry. The emergence of folding bicycles, better solve the above problems. The current folding bicycles, folding main electric trike is to reduce the occupied space, function is relatively single, not through simple changes with other functions; At the same time around the folded way of folding, folding after modelling is generally quite rough, like a scrap of bike, its outstanding, bones and muscles exposed edges and corners, no folding locking device, can't Cargo bike independently and stand down. To make up for the above defects, this paper designs a new type of multifunctional folding bicycles. The folding bikes "four with a car", in addition to general bicycles instead of walking or fitness function, but also as a shopping cart, after the folding luggage trailer and seat use, unifying the cycling, shopping, transportation and rest. 2 folding bicycles, folding folding scheme analysis scheme is the core issue of folding bike design.

Mountain bike (English for Mountain B Ike, MTB)

Mountain bike (English for Mountain B Ike, MTB), in order to free to roam in the hills, it has a bike stronger than normal, the frame, light outgoing trucks, it is not enough, must also have a flexible and powerful drive system. Along with the advance of human society, accelerating the pace of life, make people eager to return to nature release accumulated for a long time of oppression, and such problems as environment pollution, electric trike shortages, traffic congestion becoming more serious, the global bicycle industry development momentum, particularly aesthetically pleasing, functional diversity of mountain bike is more popular. A 1, the research object, research objects and methods in chongqing, chongqing yongchuan N km on the bullet, chongqing hard stone, chongqing jiangbei sky, the quick feet five mountain bike club as the research object. Investigation content of chongqing's Folding electric bikes bike club, facilities, sports level, investigate the source of funds, etc. , three research methods, literature review related general situation of the literature, events, and mountain bike movement, etc.; Through the Internet and telephone for mountain bike club executives asked interview. Second, the results and the analysis of the number of mountain bike status quo in chongqing mountain bike club. Chongqing mountain bike club so far a total of seven.

The motor vehicle industry development

Since China's reform and opening up, along with the development of Shanghai economic development, urban road traffic in providing people with convenient travel Folding electric bikes at the same time, also accept the test. Since China's accession to the WTO, Shanghai became a member of the Shanghai cooperation organization (sco), the motor vehicle industry booming, the management of motor vehicles and drivers of road traffic safety management has Three wheel bikes the primary task. But now the traffic administrative department of the still follow the old management system, vehicle management system does not keep pace with The Times, thus affecting the normal and orderly development of road traffic in Shanghai. Taking Shanghai motor vehicle management as the research object, from its historical change, the current Shanghai motor vehicle management organization system, analyzed the main problems existing in the management, analyzes the causes of the problems in developed countries as a reference and the motor vehicle management, on the basis of advanced experience, put forward the countermeasures to strengthen the management of motor vehicles in Shanghai. The thesis is divided into five chapters. The first chapter studies the significance of Shanghai motor vehicle management, vehicle management in the source position of Shanghai road traffic management, the part briefly discusses the research of motor vehicle management theory and method of public administration. The second chapter of the Shanghai motor vehicle management analysis of existing problems. Shanghai before and after the reform and opening to the outside of the historical change of the motor vehicle management review briefly, and then summarizes the status of the current management system.