v带传动的设计计算

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1、V带的传动的设计准则单根普通V带的许用功率普通V带的型号和根数的确定主要参数的选择§14.4V带传动的设计计算一、V带的传动的设计准则带传动的主要失效形式是打滑和传动带的疲劳破坏。设计准则：在不打滑的条件下，具有一定的疲劳强度和寿命。二、单根普通V带的许用功率单根带所能传递的有效拉力为：传递的功率为：为保证带具有一定的疲劳寿命，应使：σmax=σ1+σb+σc≤[σ]§14.4V带传动的设计计算σ1=[σ]-σb-σc代入得：在α=π，Ld为特定长度、抗拉体为化学纤维绳芯结构条件下计算所得P0称为单根带的基

2、本额定功率。(详见下页表)σmax=σ1+σb+σc≤[σ]200400800950120014501600180020002400280032003600400050006000小带轮基准直径d1/mm表14-8单根普通V带的基本额定功率P1（包角α=π、特定基准长度、载荷平稳时）(kW)型号ZABC500.040.060.100.120.140.160.170.190.200.220.260.280.300.320.340.31560.040.060.120.140.170.190.200.230.25

3、0.300.330.350.370.390.410.40……………………………………………900.100.140.240.280.330.360.400.440.480.540.600.640.680.720.730.56750.150.260.450.510.600.680.730.790.840.921.001.041.081.091.00.80900.220.390.680.770.931.071.151.251.341.501.641.751.831.871.821.5………………………………………

4、……1800.591.091.972.272.743.163.403.673.934.324.544.584.404.001.811250.480.841.441.641.932.192.332.502.642.852.962.942.802.511.091400.591.051.822.082.472.823.003.233.423.703.853.833.633.241.29…………………………………………2801.582.895.135.856.907.768.138.468.608.226.804.

5、26小带轮转速n1/(r/min)2001.392.414.074.585.295.846.076.286.346.025.013.232241.702.995.125.786.717.457.758.008.067.576.083.57…………………………………4504.518.2013.815.2316.5916.4715.5713.299.64单根窄V带的基本额定功率σ1=[σ]-σb-σc代入得：在α=π，Ld为特定长度、抗拉体为化学纤维绳芯结构条件下计算所得P0称为单根带的基本额定功率。σmax=

6、σ1+σb+σc≤[σ]实际工作条件与特定条件不同时，应对P0值加以修正。修正结果称为许用功率[P0]Kα—包角系数。KL—长度系数；∆P0--功率增量；2240.8222401.101.061.00.912500.8425001.301.091.030.932800.8728001.111.050.953150.8931501.131.070.073550.9235501.171.070.974000.960.7940001.101.131.024501.000.8045001.151.045001.02

7、0.8150001.181.075600.8256001.096300.840.8163001.127100.860.8371001.158000.900.8580001.189000.920.870.8290001.2110000.940.890.84100001.2311200.950.910.861120012500.980.930.881250014001.010.960.901400016001.040.990.920.831600018001.061.010.950.86Ld/mmY　ZＡ　Ｂ　

8、ＣLd/mmＺＡＢ　Ｃ基准长度KL基准长度KL表4-14普通V带的长度系列和带长修正系数KL（GB/T13575.1-92）2000.8120001.081.030.980.881.00~1.02~1.05~1.09~1.13~1.19~1.25~1.35~1.52~1.011.041.081.121.181.241.431.511.99小带轮转速n1表14-9b单根普通V带额定功率的增量∆P0型号ZABC400