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提升装置的制动装置的作用。

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①在提升机停止工作时,能够正常地闸住提升机,既正常停车。②在减速阶段及下放重物时,参与提升机的控制即工作制动。③当发生紧急事故或其他意外情况时,能迅速闸住提升机即安全制动。④对双滚筒提升机在更换水平,调节绳长时,能够闸住提升机的游动滚筒而松开固定滚筒。

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练习次数:4次
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