On The Load Sharing Dynamic Characteristics Of Wheel Reducer Of 300t Dumper

The wheel reducer is installed in the narrow space of two rear wheel hubs of the 300t mining dump truck,which acts as a deceleration and increasing torque,and is an important part of the wheel drive system.The wheel reducer usually adopts a planetary gear transmission structure,but due to the manufacturing error of the gear parts and the backlash of the gear meshing pair,the planetary wheels share the load unevenness,which causes the system to generate vibration and noise,may occur in severe cases.Such as gear failure,wheel train heating and other harsh conditions.Therefore,it is of great significance to study the dynamic load-sharing performance of wheel reducer to improve the reliability of its work and the overall service life of the mine car.300 tons of mine dump wheel side reducer is the research object.Complete the dynamics numerical simulation analysis of wheel reducer wheel train base on the virtual prototyping software ADAMS.The influences of gear assembly manufacturing error,gear clearance,center member floating,and elastic uniform load-supporting mechanism stiffness on the dynamic load sharing performance of the wheel reducer is studied.Firstly,the translation-torsion dynamics analysis model of two-stage 2K-H tandem planetary gear transmission system of wheel reducer is established based on the theory of planetary gear system dynamics,and the stiffness of the elastic members in the dynamic differential equation group is changed.The Runge-Kutta numerical method is used to solve the dynamic differential equations of the wheel system.From the perspective of theoretical analysis,the influence of the support stiffness of the elastic uniform load mechanism on the dynamic load sharing performance of the wheel reducer is studied.Secondly,based on the virtual prototype technology,the ADAMS numerical simulation model is established by changing the accuracy grade of manufacturing assembly eccentric error of different components of the wheel reducer,and the accuracy of the eccentric error of each component is studied for the dynamic load sharing performance of the wheel reducer.It also analyzes the improvement of the dynamic load-sharing performance of the wheel reducer by using floating component.The floating displacement of the floating component is calculated.Again,based on the above-mentioned numerical simulation model of the wheel reducer,the nonlinearity factor of the tooth gap is introduced.The numerical simulation model of the wheel reducer is established by means of tooth thickness reduction.The influence of gear clearance on the dynamic load-sharing performance of the wheel reducer gear train is studied.Finally,a numerical simulation model of the wheel reducer,which takes into account the eccentricity error of component manufacturing assembly,the backlash of teeth and the elastic support stiffness of the elastic load-sharing mechanism,is established.From the point of view of numerical simulation.the stiffness of the elastic load-bearing mechanism is studied for the wheel reducer.The effect of dynamic load-sharing performance,The influence of the support stiffness of the elastic uniform load mechanism on the dynamic load-sharing performance of the wheel reducer is studied,and the deformation of the elastic uniform load mechanism is obtained.The simulation data obtained are in good agreement with the theoretical model calculations,verifying the correctness of the theoretical model.The obtained simulation data are consistent with the theoretical model calculation results,which verifies the correctness of the theoretical model.The research results of the thesis provide a theoretical basis for the design technology of a 300-ton mine dump wheel decelerator.