Lift on double type, to use the rope to tractionwire rope, the rope tied to the safe and reliable.
关于复线式的升降机，要用大绳去牵引钢丝绳，绳头绑缚一定要安全可靠。
2
To analyze the special requirement of working status of tractionwire rope for conveyer belt. The using status of tractionwire rope for conveyer belt in coal mine at home is introduced.
分析胶带运输机牵引工作状况对钢丝绳的特殊要求，介绍国内煤矿胶带运输机牵引钢丝绳使用状况。
3
Less than a handful had air conditioning, and only a few had traction batteries with an off-wire speed of about 5kph.