起重吊裝鋼絲繩的選用

1、起重吊裝鋼絲繩的選用一 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16×19+1鋼絲繩用作纜風(fēng)繩、拉索，即用于鋼繩不受彎曲或可能遭受磨損的地方26×37+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36×61+1鋼絲繩用于滑車組和制作千斤繩（吊索）以及綁扎吊起構(gòu)件（重物）二 鋼絲繩的受力及安全系數(shù)鋼絲繩的受力計算 表1-9鋼絲繩的容許拉力，可由下式求得： T= c×P/K (N)式中：P產(chǎn)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，則須乘“換算系數(shù)”； K鋼絲繩的安全系數(shù)，可按表1-10

2、采用 c鋼絲繩的換算系數(shù)鋼絲繩的安全系數(shù)K 表1-10使用情況K值使用情況K值用于纜風(fēng)繩3.5用作千斤繩，無彎曲時67用于手動起重設(shè)備4.5用作綁扎的千斤繩810用于機動起重設(shè)備56用于載人的提升機14換算系數(shù)c按鋼絲繩規(guī)格而定： 表1-11鋼絲繩規(guī)格6×19+16×37+16×61+1換算系數(shù)c0.850.820.80鋼絲繩的鋼絲強度，按國家標(biāo)準(zhǔn)（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(shù)14001550MPa14001700a140018

3、50MPa14002000MPa1.1071.2151.3211.429以上算例系按新繩為準(zhǔn)，如所用為舊鋼絲繩，則求得的容許拉力應(yīng)根據(jù)繩的新舊程度，乘以0.40.75的系數(shù)。附表：附表1 鋼絲繩容許拉力查用表 表1-12附表2 鋼絲繩主要技術(shù)規(guī)格 表1-13附表：1 鋼絲繩容許拉力查用表 表1-126×19+1鋼絲繩容許拉力直徑（mm）鋼絲總斷面積（mm2）參考質(zhì)量(kg/100m)鋼絲繩公稱抗拉強度為1400MPa時破斷拉力（kN）安全系數(shù)K在下列數(shù)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=106.27.79.311.012.514.

4、015.517.018.520.021.523.024.526.028.031.034.037.040.043.046.00.40.50.60.70.80.91.01.11.21.31.41.51.61.71.82.02.22.42.62.83.014.3222.3732.2243.8557.2772.4989.49108.28128.87151.24175.40201.35229.09258.63289.95357.96433.13515.46604.95701.60805.4113.5321.1430.4541.4454.1268.5084.57102.3121.8142.9165.819

5、0.3216.5244.4274.0338.3409.3487.1571.7653.0761.120.031.345.161.380.1101.0125.0151.5180.0211.5245.5281.5320.5362.0405.5501.0606.0721.5846.5982.01125.017.026.638.352.168.185.8106.3128.8153.0179.8208.6239.3272.4307.7344.7425.9515.1613.3719.5834.7956.34.97.610.914.919.524.530.436.843.751.459.668.477.887

6、.998.5121.7147.2175.2205.6238.5273.23.45.37.710.413.617.221.325.830.636.041.747.954.561.568.985.2103.0122.7143.9166.9191.32.13.34.86.58.510.713.316.119.122.526.129.934.138.543.153.264.476.789.9104.3119.51.72.73.85.26.88.610.712.915.318.020.923.927.230.834.542.651.561.372.083.595.6 續(xù)上表6×37+1鋼絲繩容

7、許拉力直徑（mm）鋼絲總斷面積（mm2）參考質(zhì)量(kg/100m)鋼絲繩公稱抗拉強度為1400MPa時破斷拉力（kN）安全系數(shù)K在下列數(shù)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=108.711.013.015.017.519.521.524.026.028.030.032.534.536.539.043.047.552.056.060.565.00.40.50.60.70.80.91.01.11.21.31.41.51.61.71.82.02.22.42.62.83.027.8843.5962.7485.39111.53141.16174.272

8、10.87250.95294.52341.57392.11446.13503.64564.63697.08843.471003.801178.071366.281568.4326.2140.9658.9880.27104.8132.7163.8198.2235.9276.8321.1368.6419.4473.4530.8655.3792.9943.61107.41284.31474.339.060.987.8119.5156.0197.5243.5295.0351.0412.0478.0548.5624.5705.0790.0975.51180.01405.01645.01910.02195

9、.032.049.972.098.0127.9161.9199.7241.9287.8337.8391.9449.8512.1578.1647.8799.9967.61152.11348.91566.21799.99.114.320.628.036.646.357.169.182.296.5112.0128.5146.3163.2185.1228.5276.5329.2385.5447.5514.36.410.014.419.625.632.439.948.457.667.678.489.9102.4115.6129.6150.0193.5230.4269.8313.2359.94.06.29

10、.012.316.020.225.030.236.042.249.056.264.072.381.099.9121.0144.0168.6195.8225.03.25.07.29.812.816.220.024.228.833.839.245.051.257.864.880.096.8115.2134.9156.6180.0續(xù)上表6×61+1鋼絲繩容許拉力直徑（mm）鋼絲總斷面積（mm2）參考質(zhì)量(kg/100m)鋼絲繩公稱抗拉強度為1400MPa時破斷拉力（kN）安全系數(shù)K在下列數(shù)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=1011.0

11、14.016.519.522.025.027.530.533.036.038.541.544.047.050.055.561.066.572.077.583.00.40.50.60.70.80.91.01.11.21.31.41.51.61.71.82.02.22.42.62.83.045.9771.83103.43140.78183.88232.72287.31347.65413.73485.55563.13646.45735.51830.33930.881149.241390.581654.911942.222252.512535.7943.2167.5297.22132.3172.821

12、8.8270.1326.8388.9456.4529.3607.7691.4780.5875.01080.31307.11555.61825.72117.42430.664.3100.5144.5197.0257.0325.5402.0486.5579.0679.5788.0905.01025.01160.01300.01605.01945.02315.02715.03150.03620.051.480.4115.6157.6205.6261.4321.6389.2463.2543.6630.4724.0820.0928.01040.01284.01556.01852.02172.02520.

13、02896.014.722.933.045.058.774.491.9111.2132.3155.3180.1206.9234.3265.1297.1366.9444.6529.1620.6720.0827.412.316.123.131.641.152.164.377.892.6108.7126.1144.8164.0185.6208.0256.8311.2370.4434.4504.0579.26.410.114.519.725.732.640.248.757.968.078.890.5102.5116.0130.0160.5194.5231.5271.5315.0362.05.18.01

14、1.615.820.626.032.238.946.354.463.172.482.092.8104.0128.4155.6185.2217.2252.0289.6附表2鋼絲繩主要技術(shù)規(guī)格 表1-136×19+1鋼絲繩直徑（mm）鋼絲總斷面積（mm2）參考質(zhì)量（kg/100m）鋼絲繩公稱抗拉強度（MPa）14001550170018502000鋼絲繩鋼絲鋼絲破斷拉力總和（Kn）6.27.79.311.012.514.015.517.018.520.021.523.024.526.028.031.034.037.040.043.046.00.40.50.60.70.80.91.01.1

15、1.21.31.41.51.61.71.82.02.22.42.62.83.014.3222.3732.2243.8557.2772.4989.49108.28128.87151.24175.40201.35229.09258.63289.95357.96433.13515.46604.95701.60805.4113.5321.1430.4541.4454.1268.5084.57102.3121.8142.9165.8190.3216.5244.4274.0338.3409.3487.1571.7653.0761.120.031.345.161.380.1101.0125.0151.518

16、0.0211.5245.5281.5320.5362.0405.5501.0606.0721.5846.5982.01125.022.134.649.967.986.7112.0138.5167.5199.5234.0271.5312.0355.0400.5449.0554.5671.0798.5937.51085.01245.024.338.054.774.597.3123.0152.0184.0219.0257.0298.0342.0389.0439.5492.5608.5736.0876.01025.01190.01365.026.441.359.681.1105.5134.0165.5

17、200.0238.0279.5324.0372.0423.5478.0536.0662.0801.0953.51115.01295.01490.028.644.764.487.7114.5144.5178.5216.5257.5302.0350.5402.5458.0517.0579.5715.5鋼絲繩主要技術(shù)規(guī)格 序上表6×37+1鋼絲繩直徑（mm）鋼絲總斷面積（mm2）參考質(zhì)量（kg/100m）鋼絲繩公稱抗拉強度（MPa）14001550170018502000鋼絲繩鋼絲鋼絲破斷拉力總和（Kn）8.711.013.015.017.519.521.524.026.028.030.0

18、32.534.536.539.043.047.552.056.060.565.00.40.50.60.70.80.91.01.11.21.31.41.51.61.71.82.02.22.42.62.83.027.8843.5962.7485.39111.53141.16174.27210.87250.95294.52341.57392.11446.13503.64564.63697.08843.471003.801178.071366.281568.4326.2140.9658.9880.27104.8132.7163.8198.2235.9276.8321.1368.6419.4473.45

19、30.8655.3792.9943.61107.41284.31474.339.060.987.8119.5156.0197.5243.5295.0351.0412.0478.0548.5624.5705.0790.0975.51180.01405.01645.01910.02195.043.267.597.2132.0172.5218.5270.0326.5388.5456.5529.0607.5691.5780.5875.01080.01305.01555.01825.02115.02430.043.774.0106.5145.0189.5239.5296.0358.0426.5500.5

20、580.5666.5758.0856.0959.51185.01430.01705.02000.02320.02665.051.580.6116.0157.5206.0261.0322.0390.0464.0544.5631.5725.0825.0931.51040.01285.01560.01855.02175.02525.02900.055.787.1125.0170.5223.0282.0348.5421.5501.5589.0683.0784.0892.01005.01125.01390.0鋼絲繩主要技術(shù)規(guī)格 序上表6×61+1鋼絲繩直徑（mm）鋼絲總斷面積（mm2）參考質(zhì)量

21、（kg/100m）鋼絲繩公稱抗拉強度（MPa）14001550170018502000鋼絲繩鋼絲鋼絲破斷拉力總和（Kn）11.014.016.519.522.025.027.530.533.036.038.541.544.047.050.055.561.066.572.077.583.00.40.50.60.70.80.91.01.11.21.31.41.51.61.71.82.02.22.42.62.83.045.9771.83103.43140.78183.88232.72287.31347.65413.73485.55563.13646.45735.51830.33930.881149.241390.581654.911942.22