The wire rope on the roller must be listed in good order.
卷筒上钢丝绳必须缠绕排列整齐，不得乱绳。
When the wire rope being used to the largest length, the wire rope left on the roller is no less than 3 rings.
当钢丝绳使用到最大长度时，卷筒上钢丝绳剩余量不得少于3圈。
The axial force toward the side board is always produced when the wire rope reaches the new layer. It makes the side board bended and causes very large stress between the side board and the roller.
钢丝绳向新的一层过渡时，对端侧板产生轴向推力，导致侧板弯曲，同时在侧板与筒壁过渡处产生较大应力。
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