(a) the diameter of the drum is small, the bending stress of the conveyor belt is large.
(ii), conveyor belt vulcanization joint quality is poor, especially more than two times, the strength of the joint decreased significantly, or in the adhesive when the canvas layer was cut, or grinding leakage, here strength is reduced.
(three), for the reversible conveyor, because the upper and lower lap can only one direction, easy to be on the belt of the sweeper, unloading device and other equipment sharp corners scratch.
(iv), conveyor working cycle is short, starting frequently, instantaneous tensioning force is big.
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