Revolving Kiln Wheel, also known as a rolling ring, serves to transfer the entire weight of the cylinder (including refractory bricks, internal equipment, and materials, etc.) to the supporting wheel, allowing the cylinder to rotate smoothly on the supporting wheel. Therefore, the wheel must possess sufficient strength and durability. Additionally, the wheel is a component that reinforces the radial rigidity of the cylinder and should have adequate stiffness.

Based on the different cross-sectional shapes of the rotary kiln's wheel, they can be categorized into the following types:

Rotary Kiln Rectangular Belt

The cross-section is a solid rectangular shape, as shown in Figure (A), with a simple design and easy-to-maintain manufacturing quality. Generally, it has a longer service life than box-type V-belts and is widely used; however, it has relatively lower stiffness, inefficient material utilization, and poor heat dissipation conditions.

2. Rotary Kiln Box Type Belt

The cross-section is hollow box-shaped, with good thermal conditions, high rigidity, and difficult material utilization. The structure integrating the wheel rim with the cylinder can avoid "necking temperature stress" between the wheel rim and the cylinder. It also maximizes the reinforcing effect of the wheel rim on the cylinder, while reasonably utilizing the material of the wheel rim, simplifying manufacturing and installation, and facilitating operation. The installation method of the wheel rim on the cylinder usually employs a sliding sleeve type, with the pad and stopper forms as shown in Figure C. The wheel rim is not directly mounted on the cylinder segment but is installed on the pad, forming a natural ventilation channel between the cylinder and the wheel rim. This strengthens heat dissipation on one hand and reduces the thermal conduction of the kiln body to the wheel rim on the other, resulting in a smaller temperature difference between the inner and outer edges of the wheel rim. When the thermal regimen inside the kiln changes, the temperature difference variation is also not significant, thereby reducing the temperature stress on the wheel rim. During kiln operation, relative sliding occurs between the wheel rim and the cylinder along the axial direction, causing wear. In this case, the pad serves to protect the cylinder. On both sides of the wheel rim, stoppers or retainers are used to limit the radial movement of the wheel rim along the cylinder's axial direction.