同轴六分支分扭人字齿轮传动系统的配齿条件研究

Research on matching conditions of coaxial six-branch split-torsion herringbone gear transmission system

相比于传统齿轮传动,多分支分扭齿轮传动系统具有传递功率大、尺寸小、可靠性高等优点,故在船舶、航空等高速重载场合应用越来越多。由于多分支分扭齿轮传动系统属于过约束构型,为了实现各分支路的正确同步啮合,在设计过程中必须满足严格的配齿条件,这对保证其均布安装和运动同步具有重要意义。针对同轴六分支分扭人字齿轮传动系统,在考虑各支路运动同步和防止几何干涉基础上,建立了各支路正确啮合的配齿条件计算方法,给出了配齿计算方法流程并对某舰船动力传输系统进行了配齿的计算,获得了满足传动比要求、同心要求和同步啮合等条件的参数方案。通过三维造型验证了所提配齿计算方法的正确性,所提方法对其他同轴多分支齿轮传动的配齿设计具有普遍应用价值。

Compared with traditional gear transmission, the multi-branch split-torsion gear transmission system has the advantages of large transmission power, small size and high reliability, so it is more and more used in high-speed heavy load occasions such as ships and aircraft. Since the transmission system of multi-branch split torsional gears belongs to over-constrained configuration, it is necessary to meet strict tooth matching condition in the design process in order to realize the correct synchronous meshing of each branch,which is of great significance to ensure its uniform installation and motion synchronization.Aiming at the coaxial six-branch twisted herringbone gear transmission system, this paper establishes a calculation method for the proper meshing conditions of each branch on the basis of considering the movement synchronization of each branch and preventing geometric interference.In addition, the calculation of gear allocation was carried out for a ship's power transmission system, and a parameter scheme that satisfies the requirements of transmission ratio, concentricity and synchronous meshing was obtained.The correctness of the calculation method of tooth matching in this paper is verified by three-dimensional modeling. This method has universal application value to the tooth matching design of other coaxial multi-branch gear transmissions.