What is the difference between the one-way wheel, the universal wheel and the aircraft wheel?

The purchase of wheels is an important point in the trolley case. The commonly used wheels are one-way wheels, universal wheels and aircraft wheels. The following describes the advantages and disadvantages of the three. The advantages of a one-way wheel, a universal wheel and an aircraft wheel are that the one-way wheel is pushed in one direction. The advantage is that it is suitable for various road conditions, and the wheels are relatively large and relatively strong. The universal wheel rotates and moves 360 degrees, making it easier and more convenient to pull on a flat road surface, and can be pushed sideways when passing through a narrow place in an airport or a station. However, there are also directional Universal wheels now. There is also a kind of airplane mute wheel in the universal wheel. The aircraft mute wheel is 4 wheels and eight wheels. The aircraft wheel is made of rubber, because the eight sides are very stable and the sound is very small. The shortcomings of the two-way wheel, the universal wheel and the aircraft wheel the disadvantage of the one-way wheel is that it can only move in one direction. The disadvantage of the universal wheel is that it cannot be oriented. There is no way to locate the ordinary universal wheel, and it may be inconvenient to ride. However, there are also directional Universal wheels now. The disadvantage of the aircraft wheel is that the contact area is large and the friction is large, so the efficiency of the aircraft wheel is not as good as that of the four rounds. If the ground of the tourist site is not rugged, you can use the aircraft wheel and the universal wheel. If it is a bumpy road such as a township, a train station and a bus station, it is best to use a trolley case with a one-way wheel, make sure to pull a box of bricks, the trolley case is broken, the wheel is not broken.