Optimization of involute splines in gearbox transmission system
In response to the increase in torque density of wind power gearbox,the involute flat root splines in planetary transmission devices could no longer meet the current lightweight design requirements of gearboxes.A method was proposed to optimize the traditional involute flat root splines inside the gearbox into involute tooth shaped splines.Firstly,the tooth profile modification coefficient,tooth root height,and tooth top height modification coefficient of involute tooth spline was optimized to improve the torque transmission ability of the spline.Then,the involute tooth profile spline structure was studied,its tooth thickness tolerance was adjusted,so that the sun gear could float normally to compensate for the alignment deviation of gear meshing,the uneven load coefficient was reduced,and the bearing capacity of the internal gears of the gearbox was improved.The load distribution on the spline tooth surface was studied,tooth alignment modification and spiral angle modification on the spline was carried out,the load distribution of the spline tooth width was improved,excessive load on the end of the spline gear teeth was avoided,and the service life of the spline connection was extended.Finally,engineering algorithms was used to verify the shear resistance,wear resistance,and strength of the spline connection body.Through relevant tests on the gearbox,the meshing condition of the spline tooth surface was checked after the gearbox was disassembled and inspected,and the torque transmission ability of the involute tooth profile spline was verified.The research results indicate that using involute tooth shaped splines and optimizing their parameters can improve the tooth surface contact strength of the splines,and the torque transmission ability of the splines can be increased by about 10％.The torque transmission ability of toothed splines is verified through examples.
torque density of gearboxlightweight design of gearboxmechanical strengthshear bond strengthinvolute tooth shape splinesparameter optimizationtorsion ability
万方数据
维普
