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文章结合某雷达天线座方位支承转动装置拟采用的特大型轴承的选型工作,分析了四点接触球轴承和交叉滚子轴承的受载情况,将四点接触球轴承等效为两套相对安装的推力向心球轴承（α≥45°时）或向心推力球轴承（α<45°时）,将交叉滚子轴承等效为两套相对安装的推力向心滚子轴承（α=45时）,然后根据ISO的“额定动负荷法” 和“额定静负荷法”,借用已知的推力向心球轴承、向心推力球轴承和推力向心滚子轴承的计算公式、试验数据,归纳了特大型四点接触球轴承和交叉滚子轴承的动态寿命和静载能力的估算方法。列有计算示例一则。附图5幅。
Based on the selection of large bearings to be used in the azimuthal support rotating device of a radar antenna base, this paper analyzes the loading conditions of four-point contact ball bearings and crossed roller bearings, and equates the four-point contact ball bearings to two sets of relative Crossed roller bearings are equivalent to two sets of counter-mounted thrust radial roller bearings (α = 45), and then according to the ISO “dynamic load method” and “rated static load method”, to borrow the known thrust radial ball bearings, radial ball thrust bearings and thrust ball bearings to the center of the formula, the test data , Summarizes the method of estimating the dynamic life and static load capacity of extra large four point contact ball bearings and crossed roller bearings. A calculation example is listed. Figure 5 Figure.