high temperature resistance V-Belt is generally composed of a cloth layer, a stretch layer (top rubber), a strength layer (tensile layer) and a compression layer (bottom rubber). The functions of the different parts are as follows:
1. The wrapping layer, the wrapping layer is composed of plain weave canvas (mainly cotton canvas and polyester-cotton canvas) diagonally cut at 45°, with excellent elasticity and friction, can connect various parts to form a whole, and protect others Part is not subject to wear and erosion, and can increase the stiffness of the V-belt.
2. The stretch rubber layer, which is composed of a rubber material with high elasticity and excellent stretch performance, can withstand the tensile stress of the V-belt when it is running and bend, and play a buffer and protection role for the strong layer.
3. Strength layer. The strength layer is the skeleton of the V-belt. At present, the main types include polyester cord, polyester tempered brown wire, aramid cord and dipped cord fabric, etc., which are used to withstand the V-belt during operation. The resulting tension and other stresses are the main stress parts in the V-belt transmission process.
4. Cushioning rubber, polyester tempered brown ribbon core or V-belt with cord core around the strong layer, there is a layer of rubber with good adhesion strength with the belt core, which is the cushioning rubber, which acts as a fixed belt The role of the core, and can absorb the dynamic shear stress generated by the frequent deformation of the V-belt during high-speed operation.
5. Compressed rubber layer. Compressed rubber layer is composed of rubber with excellent bending fatigue resistance. It bears the compressive stress caused by the bending of the V-belt, maintains the rigidity and elasticity of the V-belt, and increases the section of the V-belt. And the friction contact surface with the pulley, improving the transmission efficiency.
Due to the different functions of different parts, the rubber formula used is also different.
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