叙述了矿井单钩提升系统大马拉小车、无功损耗大、下放段能量白白浪费的问题。
Large single hook lift system in mine has problems in reactive power loss, and energy waste during decentralization.
双点啮合单驱动BF型多柔传动装置，通过在悬挂小车内设置两个小齿轮共同来驱动一个大齿轮，使其承载能力提高一倍。
The dual-point meshing in single-drive BF flexible-transmission device will promote its bearing capacity by two small pinions which are setting in a small slung trolley to driving big one altogether.
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