The invention discloses a method for determining the multiplying power of a hoisting steel wire rope of a crane. The method comprises the following steps: 1) the hoisting multiplying power is not greater than the maximum hoisting multiplying power nmax1 determined by the number of pulleys of a boom pulley block and a hook pulley block; (2) the single-rope tension is not larger than the maximum single-rope tension Tmax of the steel wire rope provided by hoisting, the corresponding multiplying power is the minimum multiplying power nmin2 determined by the maximum single-rope tension, and the lifting multiplying power is not smaller than the lifting multiplying power when the maximum single-rope tension Tmax of the steel wire rope; (3) the residual layer number of the hoisting steel wire rope is not larger than the maximum allowable residual layer number of the hoisting steel wire rope and cannot be smaller than 0, mSmax corresponds to the minimum multiplying power nmin3 determined by the residual layer number of the hoisting steel wire rope, and mSmin corresponds to the maximum multiplying power nmax3 determined by the residual layer number of the hoisting steel wire rope; the lifting multiplying power is not larger than the lifting multiplying power of the minimum allowable remaining layer number of the hoisting steel wire rope and is not smaller than the lifting multiplying power of the maximum allowable remaining layer number of the hoisting steel wire rope; and 4) according to the conditions 1), 2) and 3), the method for determining the multiplying power n of the hoisting steel wire rope is that n is greater than or equal to MAX [nmin2, nmin3] and less than or equal to MIN [nmax1, nmax3].
本发明公开了一种起重机起升钢丝绳倍率确定方法,1)起升倍率不大于臂架滑轮组和吊钩滑轮组滑轮数量决定的最大起升倍率nmax1;2)单绳拉力不大于卷扬能提供的钢丝绳最大单绳拉力Tmax,对应的倍率为最大单绳拉力决定的最小倍率nmin2,起升倍率不小于钢丝绳最大单绳拉力Tmax时的起升倍率;3)卷扬钢丝绳剩余层数不大于卷扬钢丝绳最大允许剩余层数且不能小于0,mSmax对应卷扬钢丝绳剩余层数决定的最小倍率nmin3,mSmin对应卷扬钢丝绳剩余层数决定的最大倍率nmax3,起升倍率不大于卷扬钢丝绳最小允许剩余层数的起升倍率且起升倍率不小于卷扬钢丝绳最大允许剩余层数的起升倍率;4)综合条件1)、2)、3),起升钢丝绳倍率n确定方法为MAX[nmin2,nmin3]≤n≤MIN[nmax1,nmax3]。
Method for determining multiplying power of hoisting steel wire rope of crane
一种起重机起升钢丝绳倍率确定方法
2025-04-25
Patent
Electronic Resource
Chinese
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