风力发电机机械齿轮箱设计【参考】.doc

毕业设计(论文) 风能发电机械系统优化设计摘 要 近年来，随着人们对风力发电越来越重视，风电产业迅猛发展。目前，水平轴风力发电机在风力发电中仍占据重要位置，而由于风电齿轮箱的故障率较高，风电齿轮箱设计制造的关键技术一直是困扰我国乃至世界风电快速发展的重要因素，特别是随着风力机单机容量的不断增大，大型风电齿轮箱设计制造需要考虑的因素越来越多。风电产业的飞速发展促成了风电装备制造业的繁荣，风电齿轮箱作为风电机组的核心部件，倍受国内外风电相关行业和研究机构的关注。但由于国内风电齿轮箱的研究起步较晚，技术薄弱，特别是兆瓦级风电齿轮箱，主要依靠引进国外技术。因此，急需对兆瓦级风电齿轮箱进行自主开发研究，真正掌握风电齿轮箱设计制造技术，以实现风机国产化目标。 首先，根据风电齿轮箱承受载荷的复杂性，对其载荷情况进行了分析研究,确定齿轮箱的机械结构。选取两级行星派生型传动方案，通过计算，确定各级传动的齿轮参数。 其次，对行星齿轮传动进行受力分析，得出各级齿轮受力结果。依据标准进行静强度校核，结果符合安全要求。 最后，绘制CAD装配图，并确定恰当合理参数。 关键词：风电齿轮箱；载荷；结构设计ABSTRACT In recent years，wind power industry has been rapidly developing along with the wind power generation drawing more and more attention．At present，horizontal axis wind turbine has the dominant position in wind turbine generator system(WTGS)．The key design and manufacturing technology of gearboxes have become an important factor for restricting the development of wind power．With the wind turbine’s capacity increasing, mole and more complications must be considered in large—scale wind turbine’s design and manufacturing．As the core component of wind turbine，the gearbox is received much concern from related industries and research institution both at home and abroad．However, due to the domestic research of gearbox for wind turbine starts late，technology is weak，especially in the gearbox for MW wind turbine， which mainly relied on the introduction of foreign technology．Therefore，it is urgent need to carry out independent development and research on MW wind power gearbox， and truly master the design and manufacturing technology in order to achieve the goal of localization． Firstly, The load Cases of gearbox for wind turbines ale analyzed，and the interrelation of loading cycle numbers under different torque levels is deduced according to the curve of materials’fatigue．the mechanical structure of gearbox is determined．The two-stage derivation planetary transmission scheme is selected．The gear parameters of every stage transmission is calculated and the force analysis results