浮筏对轴系校中的影响研究

Research on the influence of floating raft on shafting alignment

筏架变形是轴系校中过程必须考虑的因素。基于有限元校中方法对筏架和轴系分别建立了有限元模型,分析了考虑筏架对轴系校中的影响规律。结果表明,在轴系自由端,筏架的变形对扰度影响较大,负荷影响较小,而在轴系固定端,则对扰度影响较小,负荷影响较大。从满足轴系校中规范的角度来设计,带有筏架的轴系与动力系统进行连接时,须采用允许一定垂向位移的弹性联轴节,以便轴系校中时对前端能采用自由端处理。

The influence of raft frame deformation on shafting alignment cannot be ignored.Based on the finite element alignment method,the finite element models of rafting frame and shafting were established respectively,and the influence law of rafting frame on shafting alignment was analyzed.The results show that the deformation of raft frame has a great influence on the disturbance of the free end of shafting and a small influence on the load,while it has a small influence on the disturbance of the fixed end of shafting and a large influence on the load.From the point of view of meeting the specification of shafting alignment,an elastic coupling allowing certain vertical displacement must be adopted when the shafting with raft frame is connected with the power system,so that the free end can be used to handle the bow end during shafting alignment.