This paper establishes nonlinear dynamic equation based on the consideration of elastic deformation of shaft which happens in gear meshing process. In addition. the stiffness incentive. error incentive and external incentives caused by eccentric phenomenon during the process are analysed. https://www.diegojavierfares.com/super-super-PEVO-6-5-x-18-5-Economy-Series-Soccer-Goal-SGM-6x18E-mega-super/