The grid coupling is the most advanced shaft connection transmission component in the international mechanical field, and it is also a very general shaft connection transmission component.The main structure of the grid coupling is composed of two hubs, two covers, two sealing rings and grids. It relies on the coiled grid embedded in the tooth groove of the two hubs to transfer torque, to achieve the link between the driving shaft and the driven shaft. In operation, the driven end is driven by the axial force of the teeth of the active end facing the grid to transfer the torque. In this way, the resonance phenomenon is avoided to a large extent. Besides, the elastic variable generated by grid when transferring the torque enables the mechanical system to obtain better vibration damping effect.