本文介绍了几种不同的大功率风电机组主轴轴承解决方案，包括圆锥滚子轴承加圆柱滚子轴承双轴承方案，超大双列圆锥滚子轴承单轴承方案以及单列圆锥滚子轴承双轴承方案。每种方案具有不同的特点，适用于不同的设计要求。本文对这几种方案进行了对比分析并且详细阐述了各自的优缺点。

is article introduced several main sha bearing solutions for large power o shore wind turbines including tapered roller bearing plus cylindrical roller bearing solution, ultra-large double row tapered roller bearing solution as well as 2 single wide spread tapered roller bearing solution. Each of them has its own characteristics to t di erent design speci cations. An analysis of each solution''s advantages and disadvantages has been also made in this article.

导圆锥滚子轴承是直升机传动系统中的重要组成元件,直母线圆锥滚子轴承存在"边缘效应"。研究表明,轴承的寿命与应力的7次方成反比。为了降低轴承工作过程中的应力水平,提高轴承寿命,需要准确设计不同工况条件下圆锥滚子的凸度值。本文通过有限元分析与Romax对比计算,得到Romax设计滚子凸度可以在保证计算精度的情况下,显著提高计算效率的结论。

Tapered roller bearing is an important element of helicopter transmission system. The straight generatrix tapered roller bearings have"edge effect". A large number of research shows that the bearing life is in inverse proportion to the 7 power of stress. In order to reduce the load stress, and prolong the service life of bearings, accurate design on tapered roller crown under different working conditions will be needed. Compared with Finite element calculation, Romax designer can save the calculation time in roller crown design under the same accuracy..

圆锥滚子轴承中滚子与滚道之间的接触状态稳定与否,依赖于滚子由非接触区进入接触区过程中的力矩中心和滚子重心的偏移。采用Herz接触假设和Besineq解分析、计算了圆锥滚子轴承接触的过程,在准静态下分析了凸度滚子廓形曲线对受力的影响。研究表明:在非匀曲率接触情况下,滚子与滚道间的偏载效应影响了滚子运行中的姿态,进而恶化轴承的受力结构。

The contact status of taper roller bearings'' roller and raceway''s is stable or not relies on the center of moment and gravity shift in the process of roller enters into contact area from the non-contact area. By using Herz contact hypothesis and Besineq solution, it analyzes and calculates the contact process of taper roller bearing. It also analyzes the influence of crowned roller profile curve to stress under the quasi-static condition. The research shows that in non-uniform curvature contact cases, the unbalance loading effect between roller and raceway affects the posture of running roller, and then worsens bearing stress structure.

根据圆锥滚子轴承的运动学原理,建立圆锥滚子球基面-内圈大挡边的运动学模型,得到圆锥滚子的自转速度、公转速度和圆锥滚子球基面-内圈大挡边接触区域的卷吸速度分布;建立圆锥滚子球基面-内圈大挡边弹流润滑的数学模型,计算分析在不同载荷和卷吸速度作用下,圆锥滚子球基面曲率半径对油膜厚度和摩擦因数的影响规律,并得到载荷与速度对圆锥滚子球基面最优化曲率半径的影响规律,即当其他工况条件不变时,圆锥滚子球基面所承受的载荷越大,其最优化的曲率半径就越大;速度越高,最优化的曲率半径则越小。

principle of tapered roller bearings.The rotational angular velocity,revolutionary angular velocity of the tapered roller and distribution of entrainment velocity of the contact region in rib-roller end were calculated.The EHL model of rib-roller end was establish,and the effect of curvature radius of tapered roller spherical end on film thickness and friction coefficient was discussed under different load and entrainment speed.The effect laws of load and speed on optimal curvature radius of ta-pered roller spherical end was summarized.That is,when other conditions are equal,the greater the tapered roller end car-ries,the larger the optimal curvature radius is;the faster the speed is,the smaller the optimal curvature radius is.

HZ3MZ2210滚子轴承内圈挡边磨床是加工滚子轴承内圈挡边的自动化机床,用于加工圆锥滚子轴承内圈大挡边或圆柱滚子轴承内圈挡边。在经过二十年的使用后,设备的进给机构等传动装置都已磨损,严重影响了加工质量。针对以上问题,对进给机构等传动装置进行了改造,使设备的加工精度有了很大的提高。

HZ3MZ2210 roller bearing inner ring ribs grinder is an automated machine tool for processing roller bearing inner ring ribs , it is used for processing inner ring big rib of tapered roller bearing and inner ring ribs of cylindrical roller bearing. After 20 years of use, feeding mechanism of the equipment and so on other gear mechanism had worn to affect machining quality seriously. For the above problems, feeding mechanism of the equipment and so on other gear mechanism were transformed to improve precessing accuracy of the grinder.