What does a mountain bike all consist of? What makes up a bicycle?

Frame: wrist set, seatpost clamp, tail hook, V brake seat (disc brake seat) Fork: top tube, inner tube, outer tube, damping wheel:

Inner and outer tubes, hubs (bearings) (rear hubs also have tower bases, jacks, occlusal teeth), spokes, spoke caps, quick-release rods (barrel shaft rods......Transmission: chain (rivets, chain steel sheets), flywheels (flywheel plates, rivets, flywheel covers), cranksets (bottom bracket, disc, crank, disc nails) Transmission: rear derailleur, front derailleur, finger dial, variable speed line handlebar group:

Stand, horizontal (swallow handlebar, straight handlebar), sitting post, auxiliary handle (not required) Cushion: seat bow + cushion surface pedal: shaft, bearing, pedal surface handle brake:

There are three kinds of V brakes, line discs, and oil discs: brake handles, brake cables, and V brake calipers discs: brake handles, brake lines, calipers, discs, and oil discs

Brake lever (cylinder, piston), oil pipe, caliper (piston), lining, disc.

The bicycle is mainly composed of the body part, the transmission part, the action part and the safety device, and some accessories can be added as needed. Bicycle accessories include hangers, stands, air pumps, safety forks, fenders, etc.

The body part is mainly composed of frame, fork, handlebar, saddle and fork assembly. The center distance between the front and rear wheels, the fork tilt angle, and the fork reach are the main parameters of the bike.

The transmission part consists of pedals, cranks, sprockets, bottom brackets, chains and flywheels. The cyclist's feet press the pedals to drive the crank to rotate, and the sprocket is transmitted to the flywheel on the rear axle through the chain to rotate.

The action section consists of front and rear axle parts, spoked rims, and tires. The weight of the wheels and the pattern, size, and quality of the tires all affect the lightness and comfort of riding. The weight of the rims and tires is generally kept as low as possible to make the ride light and brisk.

The lightweight rims are made of aluminum alloy, and the rims are connected to the front and rear axles by spokes.

Bicycles also have a certain degree of safety, and its safety devices mainly include brakes, that is, brakes, followed by lighting equipment and horn devices. The brake is an important device to ensure the personal safety of the rider, and there are many types of brakes, which are basically divided into two categories: rim brake and axle brake.

The structure of the bike is the frame. The frame is the most important infrastructure of a bicycle and the determining factor that affects the riding experience. When purchasing, attention should be paid to whether the size of the frame is in line with the height ratio of the rider, with light weight and high strength as the main requirements.

The first bicycle was invented by the Frenchman Lacey, and it was called the Trojan Horse at the time. It has no drivetrain and glides forward on two pedals, reaching speeds of up to 20 kilometers per hour. Later, the Scotsman Pierre invented the bicycle with a front wheel and pedals.

The first bicycle in the modern sense appeared in England at the end of the 19th century and was later brought to China by missionaries. At present, bicycles are most popular in the flat Netherlands, and China is the kingdom of bicycles, according to statistics, there are about 500 million bicycles in China.

Mechanics of bicycle motion:

Bicycles are an extremely common means of transportation in our daily lives. It has a history of more than 100 years.

The first bicycle was invented by the Frenchman Sifrak, which had no drivetrain and slid forward on two pedals, reaching speeds of up to 20 kilometers per hour. Later, the Scotsman Pierre invented the bicycle with a front wheel and pedals. The first bicycle in the modern sense appeared in England at the end of the 19th century and was later brought to China by missionaries.

According to statistics, there are currently about 500 million bicycles in China.

1st gear: input shaft, intermediate shaft, 1st gear gear, 1st and 2nd gear combination sleeve, output shaft.

2nd gear: input shaft, intermediate shaft, 2nd gear gear, 1st and 2nd gear combined sleeve, output shaft.

3 gears: input shaft, intermediate shaft, 3rd gear gear, 3rd and 4th gear combination sleeve, output shaft.

4 gears: input shaft, 3rd and 4th gears, combined sleeve, output shaft.

5 gears: input shaft, intermediate shaft, 5-gear gear, 5-gear combination sleeve, output shaft.

Reverse: Input shaft Intermediate shaft (a b h) Reverse intermediate gear r Five-gear combined sleeve (c) Output shaft.

In the transmission system, it includes three important components: gearbox, differential and transmission shaft. The drivetrain is responsible for transmitting the engine's power to the wheels. Due to the different ways in which the engine of the car is placed on the body, the combination of the engine and the transmission system forms a variety of changes.

Most of the combinations are related to the purpose or performance requirements of the car. Common combinations include front-engine front-wheel drive (FF), front-engine rear-wheel drive (FR), and mid-engine rear-wheel drive (MR).

Among the 25 components of a bicycle, such as the frame, tires, pedals, brakes, and chains, the basic components are indispensable.

Among them, the frame is the skeleton of the bicycle, and it carries the most weight of people and cargo.

According to the working characteristics of each component, it can be roughly divided into guide system, drive system and braking system

1.Guiding system: It is composed of handlebars, forks, front axles, front wheels and other components. The rider can change the direction of travel and maintain body balance by manipulating the handlebars.

2.Drive (transmission or travel) system: It is composed of pedals, bottom bracket, crankset, crank, chain, flywheel, rear axle, rear wheel and other components. The pedaling force of the human foot is transmitted by the pedal through the crank, sprocket, chain, flywheel, rear axle and other components, so that the bicycle continues to move forward.

3.Braking system: It is composed of brake parts, and the rider can manipulate the brake at any time to slow down and stop the bicycle to ensure driving safety.

In addition, for safety and aesthetics, as well as from the point of view of practicality, it is also equipped with parts such as lights, brackets, and bells.