大学毕设论文__基于摩擦片式高锁定系数差速器的设计.doc

摘要 我国幅员辽阔，地理和道路条件复杂，在各种路面条件下均可获得良好行驶性能的装有防滑差速器的汽车非常适合我国的道路条件。但从我国汽车工业发展情况来看，由于我国汽车工业起步晚，技术相对落后，虽然有着良好的发展势头，但是车型中的关键总成——防滑差速器的生产却与外国相差甚远。因此，国内汽车产品的更新换代在多方面要受制于国外，这无疑对我国汽车工业的发展极为不利。 为此，本论文提供了一种性能优良的机械锁止式差速器的设计方法。它能够在各种路面上使汽车获得适中的锁止系数，起到防滑的作用，提高汽车的通过性和安全性。本文的研究分两部分，一方面对各种机械式防滑差速器的性能进行了比较，并最终选用了摩擦片式自锁差速器；另一方面给出了摩擦片式自锁差速器的设计计算过程。 首先，给出了防滑差速器的性能评价指标，并在此基础上对各种机械式防滑差速器的性能和使用环境进行了比较，并且针对所设计的车型，最终选用了摩擦片式自锁差速器。 其次，阐述了摩擦片式自锁差速器的结构和工作原理。该差速器主要由半轴齿轮，行星齿轮，行星齿轮轴，差速器壳，主动摩擦片，从动摩擦片和推力压盘构成。 然后，以某一具体车型为例，考虑其实际结构要求及工况，对摩擦片式自锁差速器的具体结构参数进行了计算确定。 最后，针对所设计的摩擦片式自锁差速器，通过对其锁止系数的检验，表明该差速器符合设计要求，能够满足该SUV汽车的使用要求。 关键词：差速器，自锁，机械锁止，摩擦片式，设计 ABSTRACT China has a vast, complex geography and road conditions, cars with limited-slip differential in all road conditions given a good performance is ideal for the road conditions in China. However, From the perspective of the development of Chinas automobile industry ,as far as Chinas auto industry started late, technology is relatively backward; although the good momentum of development, but the model of the key assembly - the production of limited-slip differential is long far from foreign country. Therefore, the upgrading of the domestic automotive products to be subject to foreign countries in many aspects, which is no doubt very bad for the development of Chinas automobile industry. For this reason, this paper provides an excellent mechanical locking differentials of the design. It can make all the road cars geting moderate locking factor and improve the passage of vehicles and safety. This study include two parts, on the other hand it gives the friction plate type self-locking differential the process of design and calculation. First, the paper gives the performance evaluation index of limited-slip differential, and on this basis, various mechanical slip differential performance and using environment were compared, and the models for the design, the final chosen friction plate type self-locking differential.  Second, we show the structure and wo