This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of 3t mine car vertical shaft multi-rope cage (hereinafter referred to as cage). This standard applies to 3t mine car vertical shaft multi-rope cage. The cage is used in conjunction with the multi-rope friction hoist and combined steel tankway to lift 3t standard mine cars, equipment or personnel. This standard is used in conjunction with the head rope suspension device, tail rope suspension device and roller lug. MT 234-1991 3-ton mine car vertical shaft multi-rope cage MT234-1991 Standard download decompression password: www.bzxz.net