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煤矿安全规程第４０４条规定：“双滚简提升绞车的两套 闸瓦的传动装置必须分开，对具有两套闸瓦只有一套传动装置的双滚筒绞车，应改造为每个滚筒各有其控制机构的弹簧闸。”我国在５０～６０年代从原苏联进口及国内仿制的２５Ｍ型和２ＫＪ型２～３ｍ老式提升绞车的制动系统均
Section 404 of the coal mine safety code stipulates: “The gearboxes of the two sets of brake shoes of the double-roll hoisting winch must be separated. For a double-drum winch that has only one set of gearboxes with two sets of brake shoes, each drum shall be modified to have its own Control the body’s spring brake. ”China in the 1950s and 1960s imported from the former Soviet Union and the domestic imitation 25M and 2KJ type 2 ~ 3m old hoist braking system are