1) main reasons:

     ① belt tension is too large.

     ② seriously uneven load distribution, or severe overload.

     ③ tail drive pulley or drum into a large foreign body.

     ④ conveyor belt joint quality does not meet the requirements.

     ⑤ belt wear gauge, aging, or conveyor itself inferior quality.

     (2) preventive measures:

     ① to strengthen the inspection and maintenance of the conveyor, it often in good condition.

     ② improve the production environment, the conveyor has a good working environment.

     ③ Always check and adjust the tension device, so that belt tension is appropriate.

     ④ loaded uniformly, preventing focused overload.

     ⑤ to keep running without deviation conveyor, roller, roller rotating flexible.

     ⑥ do conveyor belt joint, strictly according to the standard, the use of qualified belt buckle, and regular checks of joint quality.