An innovation on the rope separator of friction - type hoister in mines 矿用防爆对旋抽出式通风机安全运行浅探
2.
It guarantees 100 % safety by applying pcb electronic and mechanized double protection design instead of traditional current or friction - type design on the conveyor motor protector 输送马达保护装置摒除传统电流式或磨擦式设计，改采pcb电子式机械式双保护设计，可达100 %的安全性。
3.
It guarantees 100 % safety by applying pcb electronic and mechanized double protection design insteae of traditional current or friction - type design on the conveyor motor protector 输送链条之保护装置摒除传统电流式或磨擦式设计，改采pcb电子式及机械式安全插梢设计，可达100 %的安全性。
