The gear box must have enough rigidity to bear the force and torque when bearing the force from the wind wheel and the reaction force generated during gear transmission, to prevent deformation and ensure the transmission quality. The design of the gearbox box shall be carried out in accordance with the requirements of the layout, processing and assembly conditions of the power transmission of the wind turbine unit, and the convenience of inspection and maintenance. With the continuous and rapid development of the gearbox industry, more and more industries and different enterprises have applied to the gearbox, and more and more enterprises have developed and expanded in the gearbox industry.

Gearbox has a wide range of applications, such as in wind turbines. Gearbox is an important mechanical component widely used in wind turbines. Its main function is to transfer the power generated by the wind wheel under the action of the wind to the generator and make it obtain the corresponding speed.

Generally, the speed of the wind wheel is very low, far from the speed required by the generator for power generation, which must be achieved by the speed increase effect of the gearbox gear pair, so the gearbox is also called the speed increase box.