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一、刹车块的工作情况 所有石油钻机的绞车都配备具有自动加力作用的带型刹车机构。在这类刹车机构中,施加在刹把端部的一个向下的力可使刹车带在从活端到死端的整个
First, the brake block work All oil rig winches are equipped with an automatic brake force with the role of brakes. In this type of brake mechanism, a downward force applied to the end of the brake lever causes the brake strap to move from the live end to the dead end