Vacuum tires
Low-pressure tires
All-steel radial tire
Tubeless pneumatic tires
There are many ways to call the same type of tire, and the most unscientific or misunderstood is "vacuum tire". The concept of vacuum can be understood as "void", which means that there is no substance (air) in a particular container or space, or the standard below atmospheric pressure is called vacuum. But there will be compressed high-pressure air in the tire, so why is this kind of tire with obvious substance called vacuum?
Concept analysis: tubeless pneumatic tires are commonly known as vacuum tires. The concept of "empty" here does not mean that there is no air, but the concept of "empty and empty". Refers to the inner tube of the tire that is not used to inflate the sculpt, but only uses invisible compressed air as a filler, because the invisible is so empty, which is "really empty" in the general understanding of non-scientific rigor. So there is no need to worry about the difference between "vacuum" and "vacuum". It is like describing a person's brain as "vacuum" but not really without a brain.
Radial tire concept
The parameters of automobile tires will be marked with a combination of numbers and letters, for example: 255 / 50-R19, the concept of these parameters is as follows.
255mm is the crown width 50 (%) is the section height (255 × 50% = 127.5mm) R_radial tire radial tire
19 refers to tires suitable for 19-inch wheels
The parameter calculation method is very simple. The crown refers to the surface layer where the tire contacts the ground. The height of the section can be understood as the thickness of the side wall, which can be calculated by the width value and the percentage. The most important one is that small passenger cars (standard for family models) are radial tires. What is a radial?
Meridian is a meridian, which refers to the semicircular arc line connecting the South Pole and the North Pole on the surface of the earth. The concept of a radial tire is similar to a special tire with warp characteristics. Its cord layer (reinforcement layer) does not cross each other, but is designed with structural features that are not interwoven; this design will cause the crown to move to both sides during driving The overstretching of the belt, but the overall structural reinforcement is achieved by the combination of the belt layer and the cord layer, forming a belt-like fastening layer similar to the unexpandable, so as to achieve both good rigidity and ideal flexibility of the tire. The materials used to make belts are mostly dry or aramid fibers, so radial tires are also called steel tires.
What are the advantages of "vacuum" design?
Meridian tires are designed as tubeless tires, and the structure that constrains compressed air is the combination of the tire body and the hub. The combination of the two high strengths can achieve sealed air. The advantage of this design is that the tire has more ideal elasticity and wear resistance, and the heat dissipation capacity is also very ideal; but these are not the most important, the point is that this tire will be safer.
1: A tire with an inner tube will deflate once punctured. Because there is no viscous bond between the outer tube and the inner tube, once the puncture is still stuck on the outer tube after being punctured, but the inner tube will have a gap after rotating to a position that does not contact the ground, and the thin inner tube will quickly Air leak. However, the vacuum tire will not deflate quickly. After the puncture is poked into the tire, it will be tightly constrained on the tire by the reinforcement layers at all levels. As long as the tire pressure does not push out foreign objects, it can still achieve a certain degree of sealing. Slower steps.
2: The speed of the wheels of the car during driving is extremely high, and the rubber tires will generate great heat during rotation. If it is an inner tube tire, it will cause heat energy to enter the inner tube, causing a rise in temperature and pressure, and the probability of a flat tire will be quite high; while a vacuum tire can conduct heat energy to the wheel hub through the tire body, and the wheel hub will absorb heat and pass through the chassis design. Diversion airflow for effective heat dissipation. This design can reduce the degree of tire pressure increase during long-distance driving, and the driving safety level will be greatly improved.
In summary, vacuum radial steel tires are currently the safest tires. For safety reasons and industry guidance, vacuum tires are recommended. Including motorcycles, bicycles and electric two-wheeled vehicles are mainly vacuum tires, this tire is the mainstream type.
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