This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of 1.5t mine car vertical shaft multi-rope cage (hereinafter referred to as "cage"). This standard applies to 1.5t mine car vertical shaft multi-rope cage. The cage is used in conjunction with a multi-rope friction hoist combined steel tankway or wire rope tankway to lift 1.5t standard mine cars, equipment or personnel. MT 233-1991 1.5t mine car vertical shaft multi-rope cage MT233-1991 Standard download decompression password: www.bzxz.net