The wheels of construction machinery mainly consist of two parts: tires and rims. ‌

Tires are an important component of construction machinery wheels, which directly contact the road surface and bear the weight of the car. They play a crucial role in ensuring good passenger comfort and smooth driving, good adhesion between the wheels and the road surface, and improving the traction, braking, and passability of the car. The structure of a tire consists of the tread, sidewall, shoulder, nylon crown layer, steel belt layer, curtain layer, and airtight layer, which together determine the performance and durability of the tire.

The wheel rim is a component that installs and supports the tire on the wheel. It is an important component of the wheel, sharing the load with the tire, jointly supporting the weight of the car, and providing a stable driving foundation. The design and material of the wheel rim have a significant impact on improving the performance and service life of the wheel.

In addition, the wheel also includes spokes, which are the supporting components between the wheel axle and the wheel rim on the wheel, playing an important role in enhancing the structural strength and stability of the wheel. The material of the wheel can be steel, aluminum alloy, magnesium alloy, etc., and the choice of these materials directly affects the performance and cost of the wheel.

In summary, construction machinery wheels consist of two main parts: tires and rims. The tires are the part that directly contacts the road surface, while the rims provide support and fixation for the tires. These two parts work together to ensure the stable operation and safety of construction machinery under various working conditions.