一些重型工程机械机因身较长,所使用的弹性传动轴也较长。使用较长弹性传动轴一般会出现2方面问题:一是市场上符合长度要求的弹性传动轴很难买到,需要专门定制,因此成本较高;二是整体弹性传动轴悬伸较长,在高速旋转并承担载荷时,由于没有辅助支承,其稳定性和传递载荷能力较差。对此,可将2根较短的标准弹性传动轴组合成1 Some heavy construction machinery due to longer body, the use of flexible drive shaft is also longer. The use of longer flexible drive shaft generally appears two aspects: First, the market in line with the length of the elastic drive shaft is difficult to buy, you need to customize, so the cost is higher; Second, the overall flexible drive shaft overhang longer in the High-speed rotation and bear the load, because there is no auxiliary support, the stability and transmission load capacity is poor. For this, two shorter, standard, flexible driveshafts can be combined into one