Wind power spindle forging is an important part of wind turbine, it carries the rotating torque of the blade, and bears extremely high axial and radial loads. Because wind power equipment is often faced with variable wind power and complex working conditions, so in the design process, seismic and vibration reduction measures are particularly important.
First of all, the seismic design is to ensure that the wind power spindle forgings in the event of natural disasters such as earthquakes can withstand the external impact force and ground movement. Seismic design includes the following aspects:
1, the selection of appropriate materials: wind power spindle forging materials should have good mechanical properties and seismic capacity, for example, high-strength steel has good seismic performance, can effectively resist the impact of earthquakes.
- Reasonable structural design: The structural design of the spindle forging should consider the stiffness and connection mode between the components to improve the overall seismic performance. Reasonable structural design can reduce stress concentration and vibration response, and enhance seismic ability of spindle forgings.
- Safe support and fixing: the spindle forging should be installed on a solid foundation, using reliable support and fixing methods to avoid damage caused by displacement or separation from support during an earthquake.
Secondly, the vibration reduction measures are to reduce the vibration generated by the spindle forging during operation and improve its work efficiency and service life. Vibration mitigation measures include the following aspects:
- Dynamic balance: The spindle forging should be processed in the manufacturing process to eliminate the vibration caused by unbalanced mass. By adjusting the mass distribution of the rotor, the spindle forging can maintain balance when rotating at high speed and reduce vibration.
- Damping measures: a damper or shock absorber can be added to the spindle forging to absorb and dissipate vibration energy and reduce the vibration amplitude.
- Reduce resonance: By optimizing the structural parameters and frequency analysis of the spindle forging, the occurrence of resonance phenomenon is avoided as far as possible. Reasonable choice of spindle forging shape, material and size, reduce the match with the external excitation frequency.
In practical engineering, the seismic design and vibration reduction measures of wind power spindle forging need to consider many factors such as mechanical structure, mechanical properties of materials, dynamic characteristics and geographical environment. Through reasonable design and measures, the working reliability and safety of wind power spindle forging can be effectively improved to ensure its normal operation under complex working conditions.
