What is the role of the sidewall in the use of the tire and what is the performance

Tires are usually composed of three parts: outer tire, inner tube, and pad. There are also those that do not need an inner tube, and the inner layer of the carcass has a rubber layer with good air tightness, and it needs to be equipped with special rims. The structure of tires in all countries of the world is developing in the direction of tubeless, radial structure, flattening (the ratio of tire section height to width is small) and lightweight.

The outer tire consists of a tread, sidewall, a cushion layer (or belt), a cord layer and a bead. It is used to withstand a wide range of forces. The sidewall is the outer layer of the ply on the side of the tire, which is used to protect the carcass.

The cord layer is a cloth layer composed of parallel hanging rubber cords in the carcass, which is the stressed skeleton layer of the tire to ensure that the tire has the necessary strength and dimensional stability. The buffer layer (or belt layer) is the adhesive layer or adhesive layer between the tread and the carcass of the bias tire, which is used to cushion the external impact force, protect the carcass, and enhance the adhesion between the tread and the ply layer. The bead is the part of the tire that is installed on the rim, which is composed of the bead core and the bead wrapping cloth, which plays the role of fixing the tire.

The rim, also known as the hub, is the part of the wheel that mounts the tire around the perimeter.

China's rim specification code is basically in line with international standards. Its nominal width and nominal diameter are expressed in inches. The coupling symbol (* or -) in the middle indicates whether the rim is monolithic.

For example: Represents an integral rim with a nominal width of inches and a rim code of E.

Indicates a multi-piece flat-bottom wide rim with a nominal width of inches and a nominal diameter of 20 inches.

When in use, the rim specifications of the car are important. It determines which tires can fit in the car.

Tire rim specification: the tire code of the international standard, which represents the percentage of section height and flat ratio in millimeters, followed by the tire type code, rim diameter (inches), load index (allowable bearing quality code), allowable speed code.

For example: 175 70r

In 1477h, 175 represents the tire width is 175mm, and 70 means that the flat ratio of the tire section is 70%, that is, the section height is 70% of the width, the rim diameter is 14 inches, the load index is 77, and the allowable speed is H level.

The role and basic requirements of car tires.

1. Definition of tire: Tire is a circular elastic connector between the car and the road, and it is the walking structure of the car.

Second, the role of tires installed in the car:

1. Bear the weight of the car and its carrying, which is called the carrying capacity.

2. Transmit the force of driving, traction, acceleration, steering and braking of the car to the ground, such as: driving force, traction, braking force and steering force. This is called the ability to adapt to the dynamic performance requirements of the car and make the car run.

3. The function that can make the car drive freely, operate stably and be safe at high speed under various climate, road surface and speed conditions is called safety.

4. The function of cushioning vibration, reducing noise and seating comfort is called comfort.

Third, the development of automobiles and highways has put forward higher basic requirements for the quality and use of tires

1. High load capacity and good cushioning capacity.

2. Large traction and good braking ability.

3. Good turning ability and directional stability ability.

4. Good wear resistance and durability.

5. Safety and low rolling resistance.

Section 6 Definitions of common tire terms.

1. Outer tire: the tire shell body that bears various forces.

2. Inner tube: a toroidal elastomer with a tire valve to maintain the internal pressure of the tire.

3. Pad belt: a ring belt used to protect the inner tube landing surface from rim wear.

4. Bias tires: pneumatic tires where the ply layer and the buffer layer are crossed by adjacent plywood and arranged at less than 90° with the centerline of the tire crown.

5. Radial tires: pneumatic tires with carcass cord and the center line of the tire crown arranged at 90°, and the carcass is tightened with a belt.

6. Tire specifications: the tire mark indicated by the nominal section width, nominal height-width ratio, structural code and nominal diameter load of the rim.

7. Definition of the name of each part of the tire:

1. Crown: The entire part between the two shoulders of the outer tire, including the tread belt layer or buffer layer and cord layer.

2. Tread: the crown of the outer tire, that is, the rubber layer of the outer tire on the belt layer or the buffer layer of the finger wheel banquet.

3. Shoulder: the transition area between the crown and the top anti-scuff line on the sidewall.

4. Sidewall: the part between the shoulder and the rim assembly line (waterproof line) of the bead part.

5. Bead: It is the part where the tire is installed on the rim and is in contact with the rim.

6. Fetal toe: the silver part of the inner tip of the bead.

7. Heel: the contact part between the outside of the bead and the rounded corner of the rim bead seat.

8. Inside the tire: the inner surface between the toes of the outer tire.

9. a sealing layer; Breathable adhesive layer between the toes of the outer tire. (Inner Lining).

10. Bead reinforcing layer: the fiber or steel cord layer that plays the role of strengthening the bead and sticks to the bead. (steel wire mouth wrapping cloth).

The purpose of reasonable use of tires is to ensure safety, prolong the service life of tires, and avoid dangers.

Tires are ring-shaped elastic rubber products that are grounded and rolled on various vehicles or machinery. It is usually installed on a metal rim, which can support the body, cushion external impacts, achieve contact with the road surface and ensure the driving performance of the vehicle.

Tires are often used under complex and harsh conditions, and they bear various deformations, loads, forces, and high and low temperatures when driving, so they must have high load-bearing performance, traction performance, and cushioning performance.

At the same time, Sezao also required high abrasion and flexural resistance, as well as low rolling resistance and heat generation. Half of the world's rubber consumption is used in tire production, which shows the ability of tires to consume rubber.

The structure of a tire includes parts such as the tread, sidewalls, carcass, and wire cord. Among them, the tread is the part of the tire that is in contact with the ground and usually has a tread pattern to provide better grip and drainage. The sidewall is the part that is connected to the hub, which is able to withstand the weight of the vehicle and the forces of external impacts.

The carcass is the main part of the tire, which is composed of multiple layers of rubber and cords, which can withstand large pressure and tension. The wire cord is a reinforcing material inside the tire, which can enhance the stability and durability of the tire.

Different types of vehicles require different types of tires. For example, cars and commercial vehicles often require tires with high-speed performance and durability, while off-road vehicles require tires with better off-road performance and wear resistance. In different road conditions, different types of tires also need to be selected to ensure the safety and performance of the vehicle.

Different types of vehicles require different types of tires. For example, cars and commercial vehicles typically require tires with high-speed performance and durability, while off-road vehicles require tires with better off-road performance and wear resistance. In different road conditions, different types of tires also need to be selected to ensure the safety and performance of the vehicle.

A tire is a rubber product installed on the wheel hub of a vehicle, which is mainly used for shock absorption, easing the rubber punch of pants and increasing friction. It is an important part of vehicle driving and directly affects the driving performance and safety of the vehicle.

Different types of vehicles require different types of tires. For example, cars and commercial vehicles often require tires with high-speed performance and durability, while off-road vehicles require tires with better off-road performance and wear resistance. In different road conditions, different types of tires also need to be selected to ensure the safety and performance of the vehicle.

1) Excellent wear resistance to improve the service life of retreaded tires.

2) Good driving performance can adapt to the needs of various road surfaces and vehicle and tire use conditions, and will not cause early damage.

3) Low rolling resistance (can save fuel consumption, reduce the temperature of the driving tire, and improve the safety of the tire).

4) The raw materials used should meet the requirements of environmental protection; It will not cause damage to people in contact and pollute the environment.

5) The pre-vulcanized tread should have good aging resistance and adhesive performance, so as to prevent the retreaded wheel from being used to the late tread aging and extricating from the carcass.

6) In order to prevent the pre-vulcanized tread from collapsing and falling off during use, the flexural resistance of the rubber compound is also an indicator of people's attention.

The main functions of tires: 1. Support the full weight of the vehicle, bear the load of the car, and transmit the force and torque in other directions; 2. Transmit the torque of traction and braking to ensure that there is good adhesion between the wheel and the buried surface of the road, so as to improve the dynamics, braking and passability of the car; 3. Together with the suspension of the Qiliang handcar, it alleviates the impact of the hungry key ants when the car is driving, and attenuates the vibration caused by it; 4. Prevent auto parts from being subjected to severe vibration and early damage, adapt to the high-speed performance of the vehicle and reduce the noise during driving, and ensure the safety, handling stability, comfort and energy-saving economy of driving.

A car is made up of tens of thousands of parts. And each component can generally only play one role. Tires are also one of the parts of the car, but it plays a different role from other parts, and it plays the following four roles in the driving of the car. Withstand loads.

Whether it is the weight of a car, or the passengers or the load, its weight must be transmitted to the tire through the body of the car, and finally the tire shoulders all the burden, so the tire plays a very important role in carrying it.

Because the tire is the only part of the car that is in contact with the road surface, whether it is the starting, driving, braking, or stopping of the car, it must "communicate" with the road through the tire, and complete the will of the car or the car driver through the tire. Cushioning and shock absorption.

The unpaved road surface is mostly uneven gravel road, and there will be a lot of gravel or potholes and bags on the road, even if it is a paved road, there are often some obstacles, which affect the normal driving of the car. In this case, the tires exert their excellent cushioning and shock absorption functions, allowing the car to move forward in a more comfortable situation. This is because the tires themselves are made of about 50 degrees of elastic rubber, and the air inside the tires has a wonderful shock-absorbing function, so that the car can move easily on rough roads.

Change the direction of the car.

The car's tires are used to turn or turn around, and it often has to change the direction of the car according to the driver's wishes.

It is precisely because the tires have the above four functions that the car can drive safely, freely, quickly and comfortably on uneven roads; It is precisely because it has the above four functions that tires are very important in the parts of the entire car.

In fact, we can summarize the role and importance of tires in one sentence: when a person sits in the car, then the person is actually completely handed over to the car, and the car is actually handed over to four tires while driving. If there is a problem with the tire, it will be a huge danger for both the vehicle and the people in the car.

Therefore, every driver should be very concerned about the tires of their car.

The tire is one of the important parts of the car, which is in direct contact with the road surface, and the car suspension works together to alleviate the impact of the car when driving, and ensure that the car has good ride comfort and driving smoothness; Ensure that the wheels and the road surface have good adhesion, and improve the traction, braking and passability of the car; Bearing the weight of the car, the important role played by tires in the car is becoming more and more important.