Wind power generation speed-increasing gearbox
Generally, the rotation speed of the wind wheel is very low, far less than the rotation speed required by the generator to generate electricity. It must be realized by the speed increasing effect of the gear pair of the gear box, so the gear box is also called the speed increasing box. According to the general layout requirements of the unit, sometimes the drive shaft (commonly known as the large shaft) directly connected to the wind wheel hub is integrated with the gear box, or the large shaft and the gear box are arranged separately, and the expansion sleeve or coupling Connected structure. In order to increase the braking capacity of the unit, a brake device is often installed at the input or output end of the gearbox, and combined with blade tip braking (fixed-pitch wind wheel) or variable-pitch braking device to jointly brake the transmission system of the unit .