Conveyor belt The requirements for skeleton materials in production are quite specific. The canvas skeleton materials of conveyor belts with different properties have special requirements, and can not be mixed, otherwise it will cause various problems of conveyor belts. The bending degree of the skeleton material determines the tension degree of the canvas, so we should pay special attention to it. Now let's talk about the problems caused by the reduction of belt crimp.
1. The bottom layer of the conveyor belt is prone to wrinkling, which leads to delamination and degumming of the conveyor belt.
As the rubber conveyor belt is bent and wrinkled, the shear stress between the rubber and the skeleton material at the bottom layer is greatly increased due to the compression deformation, resulting in the destruction of the bonding interface between the rubber and the skeleton material. A separation force will be applied between the rubber and the top layer for a long time, and then lead to delamination. Because the bottom layer of the conveyor belt is wrinkled, the contact between the conveyor belt and the roller is no longer cotton contact, but line contact. The power transmission is greatly affected and easy to slip; This line contact also caused the rubber on the ground of the conveyor belt to be "bitten off" under the action of the roller.
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2. The fatigue resistance is reduced.
The fatigue resistance of skeleton materials will be significantly reduced when the alternative stress of compression and tension acts on the tensile stress with only a small change, even if the change amplitude is equal.
3. The impact resistance of the conveyor belt is reduced.
Teflon conveyor belt The impact resistance of the canvas is closely related to the structure of the canvas.
The decrease of warp curvature of general canvas often means the increase of weft curvature of canvas. We can analyze the warp and weft bending of the current canvas, and we can know that the weft is in a very relaxed state. If the weft is in the bending state, when the material impacts the canvas, the impact force is mainly exerted on the warp under tension, while the weft only extends the crimp part, basically without force, and will not pull the warp outside the impact point to bear the force together, obviously, the impact resistance is poor. If the weft is in a tense state and the warp is in a relaxed state, under the impact force, the weft is forced to resist deformation, thus forcing the adjacent warp to deform, and gradually the impact resistance is transmitted outward, which is the same as the spring must be fixed in both the horizontal and vertical directions of the trampoline to have enough elasticity. Therefore, we must enhance the crimp of the conveyor belt canvas to improve the tensile strength of the conveyor belt.
