| Gear transmission system is an important and widely used transmission form,which plays a key role in aviation,ship and other fields.For a common gear transmission structure,to ensure that the torque of its left and right branches can be evenly distributed is in line with the original intention of the design and the basic requirements to realize the function of the torque transmission.Many researchers have also carried out a long and large amount of work on the basic load sharing characteristics of the gear transmission.For a new split-torque drive system,which contains many points twisted conformation of multistage gear,research work needs to be carried out,so the paper by finite element method(fem),the multistage gear for a certain configuration points twist uniform loading characteristics of split-torque system with a comprehensive simulation analysis is made and its influencing factors,through a series of simulation computation,to carry out the system dynamic torsion load characteristic influence factors of research.This is conducive to improve the understanding and grasp of the basic transmission characteristics of the multi-stage gear transmission system.The main research contents of this paper are as follows:(1)Establish twist transmission system in the three kinds of gear meshing pair of 3 d finite element model and is obtained by simulation and the bevel gear,spur gear,helical gear three tooth face of gears contact force and the stress nephogram,etc.The results of the analysis,by comparing the theoretical calculation results,the accuracy of the model is verified by and through the finite element simulation method for analysis of the feasibility of the gear mesh.(2)Through the analysis of the performance of the ideal local model of the fractional torsion transmission unit under the condition of separate analysis and its performance under the condition of the interaction between different fractional torsion transmission stages in the whole fractional torsion transmission system,the influence of the system on the load performance of each fractional torsion transmission unit is analyzed.(3)Based on the analysis of the factors affecting the load sharing performance of the input stage and the intermediate stage,this paper studies the influence of the elastic shaft stiffness,phase difference,axis deviation,bearing clearance and other factors on the load sharing performance of the two different configurations.(4)By introducing the concepts of dynamic load coefficient and range as the indexes to evaluate the dynamic load equal-load vibration characteristics of the split-torsional transmission structure,the influence of different influencing factors on the dynamic transmission performance of the input stage and the intermediate stage split-torsional transmission structure was studied and analyzed.(5)Demonstration analysis is suitable for the study of the twist uniform loading drive system performance optimization method,based on the right side of the single input condition of torsional drive system as a case study,to verify the effectiveness of proposed elastic shaft stiffness adjustment method to optimize the effectiveness of the system load characteristic,and specific points for example given torsion load performance optimization scheme,systems and overall torsion performance are significantly increased. |
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