单位数据t/h75.46169.785t/h385385m0.51m/s1.40.7t/m30.70.7皮带倾角8o~15o16o~20o19o19oC0.95~0.90.9~0.80.80.9Q:皮带运煤机出力K:断面系数,TD75型按385计算Q=KB2VγC皮带运煤机的设计出力一般取0.85C:倾斜运输出力降低系数B:皮带宽度V:皮带速度γ:煤的堆积比重符号vQLnHk1k2k3k4P/PA电机清洁、干燥ω/5006508001000120014000.0180.00610.00740.010.01380.01910.0230.020.00670.00820.0110.01530.02120.02550.0250.00840.01030.01370.01910.02650.03190.030.010.01240.01650.02290.03180.03830.0350.01170.01440.01920.02680.03710.04460.040.01340.01650.0220.03060.04240.051表2空载运行功率系数B/mmk1平型托辊阻力系数ω//0.0250.035表1托辊阻力系数少量尘埃,正常湿度大量尘埃,湿度大工作条件槽型托辊阻力系数ω/0.030.04附加功率系数,根据输送机水平投影长度Ln和输送机倾角δ,按表4选取输送机水平投影长度意义输送带速度输送量传动滚筒轴功率对于L<80m的带式输送机,可根据以下公式进行简易计算:PA=(k1Lnv+k2LnQ±0.0273QH)k3k4+∑P/k1Lnv:输送带及托辊转动部分运转功率,KW;输送机受料点与卸料点间的高差,当输送机设有卸料车时,应加上卸料车提升高度H/,H/值见表6空载运行功率系数,可根据托辊阻力系数ω/(见表1),按表2选取k2LnQ:物料水平提升功率,KW;0.0273QH:物料垂直提升功率,物料向下输送时取“+”,向下输送时取“-”,KW。物料水平运行系数,可根据托辊阻力系数ω/按表3选取卸料车功率系数,无卸料车时,k4=1;有卸料车时,光面滚筒k4=1.16,胶面滚筒k4=1.11犁式卸料器及导料槽长度超过3m部分的附加功率,见表5传动滚筒轴功率——物料向上输送时0.020.018ω/0.0180.020.0250.030.0350.04k24.91×10-55.45×10-56.82×10-58.17×10-59.55×10-51.89×10-5δ/(o)1530456010015020002.82.11.81.61.551.51.461.71.41.31.251.251.21.2121.451.251.251.21.21.151.15201.31.21.151.151.151.131.13因素的情况下求出的。5350065080010001200P//KW0.3n0.4n0.5n1.0n1.522.550.08L0.08L0.09L0.10L0.115L0.240.240.270.30.34550065080010001200H//m1.71.81.962.122.372.422.52符号单位1#PKW1.3042930.4904k11表3物料水平运行功率系数k3表4附加功率系数Ln/m注:k3是在考虑有一个空段清扫器、一个头部清扫器及一个3m长的导料槽,并考虑物料加速阻力等犁式卸料器导料槽带宽B/mm表5槽长超过3m部分的附加功率犁式卸料器个数/n导料槽超过3m的长度/L注:表中n为犁式卸料器个数;L为导料槽超过3m的长度(m),即L等于导料槽总长减3米。带宽B/mm卸料车重型卸料车表6卸料车提升高度电动机功率:P=kPA/η意义电动机功率功率备用系数电动机功率的计算数据(物料向上输送时)PAKW1.1738640.44136η0.90.9对于光面传动滚筒η=0.88,对于胶面传动滚筒η=0.90。注:对于功率大于5.5KW的JO2型电动机k=1.4,其他电动机k=1.0;(物料向上输送时)电动机轴功率总传动系数单位数据1#2#3#4#5#6#m/s1.251.40.71.25111t/h20404020303030m13.5371020.631116m50.2258.1354.53.70.0220.01340.03060.030.030.030.030.0001890.0001890.0001890.0001890.0001890.0001890.0001891.31.71.31.21.21.21.21111111KW0.270.270.270.270.270.270.27KW1.1738640.441360.8176381.092961.9525541.1831041.3185KW0.49040.9084871.21442.1695051.314561.465传动滚筒轴功率对于L<80m的带式输送机,可根据以下公式进行简易计算:PA=(k1Lnv+k2LnQ±0.0273QH)k3k4+∑P/k1Lnv:输送带及托辊转动部分运转功率,KW;k2LnQ:物料水平提升功率,KW;0.0273QH:物料垂直提升功率,物料向下输送时取“+”,向下输送时取“-”,KW。300>3001.31.21.151.151.141.141.11.114000.18L0.5414002.623.022#3#4#5#6#7#8#0.9084871.21442.1695051.314561.4651.7851521.227421111111k3表4附加功率系数Ln/m注:k3是在考虑有一个空段清扫器、一个头部清扫器及一个3m长的导料槽,并考虑物料加速阻力等表5槽长超过3m部分的附加功率注:表中n为犁式卸料器个数;L为导料槽超过3m的长度(m),即L等于导料槽总长减3米。表6卸料车提升高度0.8176381.092961.9525541.1831041.31851.6066371.1046780.90.90.90.90.90.90.97#8#1130306.219.510.900.030.030.0001890.0001891.21.2110.270.271.6066371.1046781.7851521.22742