起重吊裝鋼絲繩的選用

1、起重吊裝鋼絲繩的選用鋼絲繩類型及選用：表1-8序號鋼絲繩類型一般適宜選用的場合16X19+1鋼絲繩用作纜風繩、拉索,即用于鋼繩不受彎曲或可能遭受磨損的地方26X37+1鋼絲繩用于滑車組中,即繩子承受彎曲時采用,作為穿繞滑車組起重繩等36X61+1鋼絲繩用于滑車組和制作千斤繩(吊索)以及綁扎吊起構件(重物)二鋼絲繩的受力及安全系數鋼絲繩的受力計算表19鋼絲繩的容許拉力,可由下式求得：T=cXP/K(N)式中：p產品規(guī)格所保證或試驗所得的鋼絲繩破斷拉力(N),如P采用鋼絲破斷拉力總和,那么須乘“換算系數；K鋼絲繩的平安系數,可按表10采用c一鋼絲繩的換算系數鋼絲繩的平安系數K表使用情況K-Tl使用

2、情況K值用于纜風繩3.5用作千斤繩,無彎曲時67用于手動起重設備4.5用作綁扎的千斤繩810用于機動起重設備56用于載人的提升機14換算系數c按鋼絲繩規(guī)格而定：表1-11鋼絲繩規(guī)格6X19+16X37+16X61+1換算系數c0.850.820.80鋼絲繩的鋼絲強度,按國家標準(GB1102-74)規(guī)定分為五級,即1400、1550、1700、1850和2000(MPa).對鋼絲繩在不同公稱抗拉強度時的容許拉力,可按下表換算求得：強度換算系數1400,1550MPa1400700a1400Tl850MPa1400t2000MPa1.1071.2151.3211.429以上算例系按新繩為準,如所

3、用為舊鋼絲繩,那么求得的容許拉力應根據繩的新舊程度,乘以0.40.75的系數.附表：附表1鋼絲繩容許拉力查用表表12附表2鋼絲繩主要技術規(guī)格表13鋼絲繩容許拉力查用表表1126X19+1鋼絲繩容許拉力直徑mm鋼絲總斷面積mm2參考質量(kg/100m)鋼絲繩公稱抗拉強度為1400MPa時破斷拉力(kN)平安系數K在以下數值時的容許拉力kN)鋼絲繩鋼絲鋼絲破斷拉力總和整根繩的破斷拉力K=3.5K=5K=8K=106.20.414.3213.5320.017.04.93.42.11.77.70.522.3721.1431.326.67.65.33.32.79.30.632.2230.4545.13

4、8.310.97.74.83.811.00.743.8541.4461.352.114.910.46.55.212.50.857.2754.1280.168.119.513.68.56.814.00.972.4968.50101.085.824.517.210.78.615.51.089.4984.57125.0106.330.421.313.310.717.01.1108.28102.3151.5128.836.825.816.112.918.51.2128.87121.8180.0153.043.730.619.115.320.01.3151.24142.9211.5179.851.436

5、.022.518.021.51.4175.40165.8245.5208.659.641.726.120.923.01.5201.35190.3281.5239.368.447.929.923.924.51.6229.09216.5320.5272.477.854.534.127.226.01.7258.63244.4362.0307.787.961.538.530.828.01.8289.95274.0405.5344.798.568.943.134.531.02.0357.96338.3501.0425.9121.785.253.242.634.02.2433.13409.3606.051

6、5.1147.2103.064.451.537.02.4515.46487.1721.5613.3175.2122.776.761.340.02.6604.95571.7846.5719.5205.6143.989.972.043.02.8701.60653.0982.0834.7238.5166.9104.383.546.03.0805.41761.11125.0956.3273.2191.3119.595.6續(xù)上表6X37+1鋼絲繩容許拉力直徑mm鋼絲總斷面積mm2參考質量(kg/100m)鋼絲繩公稱抗拉強度為1400MPa時破斷拉力(kN)平安系數K在以下數值時的容許拉力kN)鋼絲繩鋼絲

7、鋼絲破斷拉力總和整根繩的破斷拉力K=3.5K=5K=8K=108.70.427.8826.2139.032.09.16.44.03.211.00.543.5940.9660.949.914.310.06.25.013.00.662.7458.9887.872.020.614.49.07.215.00.785.3980.27119.598.028.019.612.39.817.50.8111.53104.8156.0127.936.625.616.012.819.50.9141.16132.7197.5161.946.332.420.216.221.51.0174.27163.8243.5199

8、.757.139.925.020.024.01.1210.87198.2295.0241.969.148.430.224.226.01.2250.95235.9351.0287.882.257.636.028.828.01.3294.52276.8412.0337.896.567.642.233.830.01.4341.57321.1478.0391.9112.078.449.039.232.51.5392.11368.6548.5449.8128.589.956.245.034.51.6446.13419.4624.5512.1146.3102.464.051.236.51.7503.644

9、73.4705.0578.1163.2115.672.357.839.01.8564.63530.8790.0647.8185.1129.681.064.843.02.0697.08655.3975.5799.9228.5150.099.980.047.52.2843.47792.91180.0967.6276.5193.5121.096.852.02.41003.80943.61405.01152.1329.2230.4144.0115.256.02.61178.071107.41645.01348.9385.5269.8168.6134.960.52.81366.281284.31910.

10、01566.2447.5313.2195.8156.665.03.01568.431474.32195.01799.9514.3359.9225.0180.0續(xù)上表6X61+1鋼絲繩容許拉力直徑mm鋼絲總斷面參考質鋼絲繩公稱抗拉強度為1400MPa時積(mm2)量(kg/100m)破斷拉力kN平安系數K在以下數值時的容許拉力kN)鋼絲繩鋼絲鋼絲破斷拉整根繩的破K=3.5K=5K=8K=10力總和斷拉力11.00.445.9743.2164.351.414.712.36.45.114.00.571.8367.52100.580.422.916.110.18.016.50.6103.4397.22

11、144.5115.633.023.114.511.619.50.7140.78132.3197.0157.645.031.619.715.822.00.8183.88172.8257.0205.658.741.125.720.625.00.9232.72218.8325.5261.474.452.132.626.027.51.0287.31270.1402.0321.691.964.340.232.230.51.1347.65326.8486.5389.2111.277.848.738.933.01.2413.73388.9579.0463.2132.392.657.946.336.01.34

12、85.55456.4679.5543.6155.3108.768.054.438.51.4563.13529.3788.0630.4180.1126.178.863.141.51.5646.45607.7905.0724.0206.9144.890.572.444.01.6735.51691.41025.0820.0234.3164.0102.582.047.01.7830.33780.51160.0928.0265.1185.6116.092.850.01.8930.88875.01300.01040.0297.1208.0130.0104.055.52.01149.241080.31605

13、.01284.0366.9256.8160.5128.461.02.21390.581307.11945.01556.0444.6311.2194.5155.666.52.41654.911555.62315.01852.0529.1370.4231.5185.272.02.61942.221825.72715.02172.0620.6434.4271.5217.277.52.82252.512117.43150.02520.0720.0504.0315.0252.083.03.02535.792430.63620.02896.0827.4579.2362.0289.66X19+1鋼絲繩直徑m

14、m鋼絲總斷面積4什參考質里kg/鋼絲繩公稱抗拉強度MPa)14001550170018502000鋼絲繩鋼絲(mm2)100m)鋼絲破斷拉力總和Kn)6.20.414.3213.5320.022.124.326.428.67.70.522.3721.1431.334.638.041.344.79.30.632.2230.4545.149.954.759.664.411.00.743.8541.4461.367.974.581.187.712.50.857.2754.1280.186.797.3105.5114.514.00.972.4968.50101.0112.0123.0134.0144.

15、515.51.089.4984.57125.0138.5152.0165.5178.517.01.1108.28102.3151.5167.5184.0200.0216.518.51.2128.87121.8180.0199.5219.0238.0257.520.01.3151.24142.9211.5234.0257.0279.5302.021.51.4175.40165.8245.5271.5298.0324.0350.523.01.5201.35190.3281.5312.0342.0372.0402.524.51.6229.09216.5320.5355.0389.0423.5458.

16、026.01.7258.63244.4362.0400.5439.5478.0517.028.01.8289.95274.0405.5449.0492.5536.0579.531.02.0357.96338.3501.0554.5608.5662.0715.534.02.2433.13409.3606.0671.0736.0801.037.02.4515.46487.1721.5798.5876.0953.540.02.6604.95571.7846.5937.51025.01115.043.02.8701.60653.0982.01085.01190.01295.046.03.0805.41

17、761.11125.01245.01365.01490.06X37+1鋼絲繩直徑mm鋼絲總斷面積4#參考質里kg/鋼絲繩公稱抗拉強度MPa)14001550170018502000鋼絲繩鋼絲mm2100m)鋼絲破斷拉力總和Kn)8.70.427.8826.2139.043.243.751.555.711.00.543.5940.9660.967.574.080.687.113.00.662.7458.9887.897.2106.5116.0125.015.00.785.3980.27119.5132.0145.0157.5170.517.50.8111.53104.8156.0172.5189

18、.5206.0223.019.50.9141.16132.7197.5218.5239.5261.0282.021.51.0174.27163.8243.5270.0296.0322.0348.524.01.1210.87198.2295.0326.5358.0390.0421.526.01.2250.95235.9351.0388.5426.5464.0501.528.01.3294.52276.8412.0456.5500.5544.5589.030.01.4341.57321.1478.0529.0580.5631.5683.032.51.5392.11368.6548.5607.566

19、6.5725.0784.034.51.6446.13419.4624.5691.5758.0825.0892.036.51.7503.64473.4705.0780.5856.0931.51005.039.01.8564.63530.8790.0875.0959.51040.01125.043.02.0697.08655.3975.51080.01185.01285.01390.047.52.2843.47792.91180.01305.01430.01560.052.02.41003.80943.61405.01555.01705.01855.056.02.61178.071107.4164

20、5.01825.02000.02175.060.52.81366.281284.31910.02115.02320.02525.065.03.01568.431474.32195.02430.02665.02900.06X61+1鋼絲繩直徑mm鋼絲總斷面積4#參考質里kg/鋼絲繩公稱抗拉強度MPa)14001550170018502000鋼絲繩鋼絲(mm2)100m)鋼絲破斷拉力總和Kn)11.00.445.9743.2164.371.278.185.091.914.00.571.8367.52100.5111.0122.0132.5143.516.50.6103.4397.22144.5160.0175.5191.0206.519.50.7140.78132.3197.0218.0239.0260.0281.522.00.8183.88172.8257.0285.0312.5340.0367.525.00.9232.72218.8325.5360.5395.5430.5465.027.51.0287.31270.1402.0445.