The hoisting machine can work normally, the brake should be reliable.
提升卷扬机应能正常工作，制动器应工作可靠。
The coal mine main hoisting system couldn t safe work with the vibration of the derrick (especially in starting or stopping) .
煤矿主提升系统由于井塔的振动，无法满足安全生产的要求（尤其是在启动、停车阶段）。
It can greatly improve the efficiency of mine hoisting, and the work environment, reduce the energy consumption and raise the enterprise benefit and management level.
该系统的应用将极大地提高矿山提升的工作效率，改善工人的工作环境，降低能源消耗，提高企业效益和管理水平。
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