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竖井提升中容器的过卷问题一直是困扰生产影响安全的事故隐患。虽然有多种后备保护，但过卷事故仍时有发生，轻者影响生产，重者造成人员伤亡，设备损坏。为解决这一难题．1992年版《煤矿安全规程》第372和373条明确规定：对提升速度大于3mis的矿井，必须增设防提梁、托罐装置
Over-hoisting of the hoist shaft in the hoistway has always been a hidden danger to the safety of the production. Although there are many kinds of back-up protection, over-roll accidents still occur from time to time, while light ones affect production, causing heavy casualties and equipment damage. To solve this problem. The 1992 edition of “Coal Mine Safety Regulations” Article 372 and 373 clearly states: for the mine speed greater than 3mis mine, must be additional anti-beam, booster device