检查绳夹安装是否正确。
当升降机使用一个月后，绳夹的螺栓都要重新拧紧。
After being used for over 1 month, all the screws must be twisted firmly.
钻机启动过程中的冲击载荷造成快绳拉力过大是钢丝绳在滚筒缠绕过程中发生夹绳、乱绳事故的主要原因之一。
One of the accident of wire line squeeze and disorder is caused by the impact force happened on fast line during rig starting.
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