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在工程应用中,齿轮间发生的冲击碰撞现象十分常见,经常会造成齿轮断齿、齿轮轴断裂等问题。针对该问题,以18m~3抓斗式挖泥船回转机构齿轮副为研究对象,对其制动过程进行分析,并在ANSYS/LS-DYNA软件环境下对不同齿侧间隙下的回转齿轮建立显式动力学分析模型,然后对回转齿轮的制动过程进行仿真,并利用后处理器读取模型的计算结果,得出回转大齿圈和小齿轮接触力、齿面应力和齿根弯曲应力的变化曲线,分析了齿侧间隙对齿面啮合接触力与应力的影响,为控制齿轮副制动时的冲击力与抓斗挖泥船传动系统的设计提供理论依据。
In engineering applications, the phenomenon of collision between gears is very common, often causing gear teeth, gear shaft rupture and other issues. In order to solve this problem, the gear pair of 18m ~ 3 grab dredger slewing mechanism is taken as the research object, the braking process is analyzed, and the revolving gear under different tooth flank clearance is established under the software of ANSYS / LS-DYNA Explicit kinetic analysis model, and then simulate the braking process of the rotating gear. Using the postprocessor to read the calculation results of the model, the contact force, tooth surface stress and root bending stress of revolving ring gear and pinion are obtained The influences of the flank clearance on the contact force and the stress of the tooth surface are analyzed. The theoretical basis is provided for the control of the impact force of the gear pair brake and the design of the drive system of the grab dredger.