Cardan shaft flatness requirements and maintenance

The mechanical energy is transferred from the gear box input shaft connected to the wheel hub, and the energy input from the wind wheel is converted from the gear box to the small rotation form, and then transmitted to the generator by the coupling. The driving system mainly includes high and low shaft, gear box, brake device and so on. The brake is divided into electromagnetic brake, hydraulic brake, manual brake, which is the device that makes the fan stop working. The high and low speed shafts are connected with the gear box and the generator through a coupling.

The coupling has good vibration absorption effect and easy maintenance. The diaphragm coupling is suitable for application of low torque transmission. The role of the fan transmission system is to transfer the mechanical energy converted from the wind wheel to the generator for power generation. For permanent magnet direct drive units, because of its relatively simple structure, mainly refers to the transmission shaft and other components. In order to improve the fatigue life of the diaphragm, TC4 forging has high requirements for the grade of high and low microstructure when processing the diaphragm, and many domestic titanium alloy manufacturers can not meet this requirement. For diaphragm forgings, designers generally put forward high requirements for the flatness of forgings produced by the forging factory, and some manufacturers in order to meet the flatness requirements of forgings produced by the factory, the use of heat treatment or mechanical means to forcibly control the deformation of forgings, so that the forgings themselves have a large internal stress, so that the processing produces stress release, resulting in a large number of forgings deformation. So that the forgings scrap. At present, the domestic flexible coupling equipment using titanium alloy material is still just starting.

Titanium alloy is an ideal flexible coupling material after long-term testing, its low density, high specific strength, has a certain corrosion resistance, these advantages can improve the overall performance of the product. In order to make titanium alloy materials more stable and widely used in flexible coupling equipment, it is also necessary for users, design units, material development and production units, equipment manufacturing and maintenance manufacturers to cooperate in order to accumulate data and experience in the use of titanium alloy materials for a long time. With the development of flexible coupling technology, the improvement of titanium alloy forging and processing technology, and the breakthrough of restricting the development of China's titanium alloy industry, it is believed that the application prospect of titanium alloy materials in flexible coupling equipment is more and more broad.