Dynamic measurement method for gap between rolling mill supporting roll bearing and rolling mill housing window

The invention provides a dynamic measurement method for a gap between a rolling mill supporting roll bearing and a rolling mill housing window. A rolling mill housing opening gap is monitored by adopting a zero adjustment process, dynamic pressing is carried out for several times, a bearing oil return temperature formula is obtained through a linear fitting method, the oil return temperature of the rolling mill supporting bearing in a working state is calculated, then the transverse swelling amount of the bearing is obtained, gap value comparison is carried out, when it is found that the dynamic gap of a rolling mill supporting roll does not meet the standard requirement, a shutdown means is taken, and the gap is re-adjusted. By means of the method, reasonable control over the rolling mill housing window gap is achieved, and the situation that the rolling mill supporting roll bearing is locked due to temperature expansion, pressure deformation and the like is prevented. 本发明提出一种轧机支撑辊轴承与轧机牌坊窗口间隙的动态测量方法，采用零调过程对轧