钢丝绳重量系数和最小破断拉力系数

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1、钢丝绳重量系数和最小破断拉力系数(表)WIREROPEWEIGHTCOEFFICIENTANDMBLCOEFFICIENT(LIST1)类别Class钢丝绳重量系数K'Wireropeweightcoefficient最小破断拉力系数K'Minimumbreakingloadcoefficient天然纤维芯钢丝绳NF合成纤维芯钢丝绳SF钢芯钢丝绳IWR/IWSK2/K1nK2/K1p纤维芯钢丝绳FC钢芯钢丝绳IWR/IWSK'1/K'2K1nK1pK2K'1K'2kg/100m·mm21x7--0.522---0.54-11x19--0.507---0.53-1x37--0

2、.501---0.49-26x70.3510.3440.3871.11.120.3320.3591.0836x19(a)0.380.3710.4181.11.130.330.3561.0846x37(a)56x19(b)0.3510.3440.41.141.160.3070.3321.0866x37(b)0.3460.3370.41.161.190.2950.3191.0876x610.3610.3540.3981.11.120.2830.3061.0888x190.3570.3440.4351.221.260.2930.3461.1898x371018x70.390.43

3、1.11.10.310.3281.061118x191234x70.390.431.11.10.3080.3181.031335Wx7-0.46---0.36-146Vx70.4120.4040.4371.061.080.3750.3981.06156Vx190.4050.3970.4291.061.080.360.3821.06166Vx37174Vx390.410.402---0.36--186Qx19+6Vx210.410.402---0.36--196x120.2510.231---0.209--206x240.3180.304---0.28--216x150.20

4、.185---0.18--224x190.41---0.36--234x370.41---0.36--注释:1.在第3项、第5项、第8项钢丝绳中，当股内钢丝的数目为19或19根以下时，重量系数应比表中所列的数小3%;2.在第15项钢丝绳中,股含纤维芯6Vx21,6Vx24结构钢丝绳的重量系数和最小破断拉力系数应分别比表中所列的数小8%;6Vx30结构钢丝绳的最小破断拉力系数应比表中所列的数小10%;在第16项钢丝绳中，股为线接触结构6Vx37S钢丝绳的重量系数和最小破断拉力系数则应分别比表中所列的数大3%;3.在第20项钢丝绳中，股为等捻距结构钢丝绳的重量系数和最小破断拉力

5、系数应分别比表中所列的数大4%。4.K1p重量系数是对聚丙烯纤维芯钢丝绳而言。Note:1.Forthewireropesin 3,5,or8,whenthenumberofwiresinastrandis19orless,theweightcoefficientshould be3%less thanthefigureinthetable.2.In15,6Vx21and6Vx24havefibercoresinsidestrand.Thewireropeweightcoefficientandminimumbreakingload coefficientshouldbe8

6、%lessthanthefigureinthetable.Theminimumbreakingloadfor6Vx30shouldbe10%lessthanthefigureinthetable.Whilein16,6Vx37Sismadewithequallaystrands,theweightcoefficientandminimumbreakingloadcoefficientshouldbe3%largerthanthefigureinthetable.3.In20,forthewireropeswithsamelaypitch,theweightcoefficie

7、ntandminimumbreakingloadcoefficientshouldbe4%largerthanthefigureinthetable.4.K1pweightcoefficientisusedforwireropeswithpolypropylenefibercores.供电距离过长，必须允许一定的电压降。供电电压为660伏，负荷400KW时的额定电流：I＝P/1.732×U×cosφ＝400/1.732×0.66×0.8≈437(A)距离：L＝1000米，铜芯电线电阻率：ρ＝0.0172，线路末端线