The working principle of the gearbox is mainly to form a reduction ratio through the meshing transmission of the internal large and small gears to achieve the deceleration effect. The gearbox is a basic transmission device, which is widely used in wind turbines, conveying equipment, chemical equipment, environmental protection machinery and other fields. Its main function is to transfer the input power to the output shaft through the speed increase or deceleration of the gear pair to obtain the corresponding speed and torque. In wind turbines, the role of the gearbox is particularly critical, because the power generated by the wind wheel under the action of wind usually has a very low speed, which is far from the speed required by the generator to generate electricity, and must be achieved through the speed increase of the gearbox.
The low-speed shaft in the gearbox is equipped with a large gear, and the high-speed shaft is equipped with a small gear. Through the meshing and transmission of the gears, the acceleration or deceleration process can be completed. This speed change device has many applications in the speed change of industrial machinery. The principle of the gearbox can also realize various functions such as speed change, torque change, change of transmission direction, clutch function and power distribution. For example, by using the meshing of large gears and small gears, it is possible to achieve deceleration and torque increase, increase the torque output of the engine, and thus improve the vehicle's climbing ability and starting ability.
Wind power gearboxes are usually composed of three stages of gears, which gradually increase the speed and transmit the torque to the generator. The design and manufacture of gearboxes need to take into account factors such as high loads, high speeds, and complex environments to ensure their safe operation and power generation efficiency.