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1、 黑龙江工程学院本科生毕业设计 Appendix China in the first half of 2008 about 93 million trucks accumulative total sales of cars, vans 61 million vehicles, year-on-year growth of 20.2%, visible light car in commercial car production has a large proportion. And driving axle is very important in the vehicle driving
2、axle is the important car auto bearing assembly, auto frame and integral by suspension of body vertical force, to lead the longitudinal forces, transverse force and torque, and impact load; Driving axle also delivers the transmission, the maximum torque reaction is under. Automobile driving axle str
3、ucture and design parameters in addition to the reliability of the automobile and durability have important influence on the outside, also for the automobile driving performance such as power, economy, smooth, through sex, mobility Automobile driving axle design involves the mechanical parts and com
4、ponents is widely to these varieties, spare parts, components and assemblies manufacturing also almost want to design to all modern machinery manufacturing process, design a simple structure, reliable operation and low cost, can greatly reduce the drive axle of the total cost of the vehicle producti
5、on, promote economic development, and car to drive through the car studying and designing practice, can better learning and mastery of the modern car design and mechanical design of the comprehensive knowledge and skills, and the overall thinking and operation skill check, drawing, is the very impor
6、tant link, so ontology of a structure design of fine vans axles has certain Automobile driving axle is one of the main parts car, its basic function is to enlarge the shaft or by the torque transmission spread, then torque distribution to drive wheels, and make about driving wheel has about vehicle
7、movement required differential function; Axles in the end of powertrain system, choose proper Lord slowdown, ensure cars than with sufficient ground clearance is achieved, gear and other transmission job need to ensure smooth are the parameters, and even bear effect on the pavement drive axle and fr
8、ame or carrying body vertical force, the lead between transverse and longitudinal force and torque force. Driving axle quality, performance will have a direct impact on the vehicles safety, economy, comfort and reliability. After the car driving axle design can make the students comprehensive by usi
9、ng their This thesis research aims to overall matching car by driving axle Lord finish design of gear reducer, differential component such as type of design and calculation, and complete checking and comprehensive design single main reducer, then the batch Through the design of the vehicle driving a
10、xle should also master the understanding, including each component interaction between the body and the electrical system, the influence and cooperate to drive axle of the process and therefore more familiar with vehicle mastery. That in the future the production and living effectly use.附 录 我国2008年上
11、半年货车累计销售约93万辆，其中轻型货车61万辆，同比增长20.2%，可见轻型汽车在商用汽车生产中占有很大的比重。而且驱动桥在整车中十分重要，汽车驱动桥是汽车的重要总成，承载着汽车车架及承载式车身经悬架给予的铅垂力、纵向力、横向力及其力矩，以及冲击载荷；驱动桥还传递着传动系中的最大转矩，桥壳还承受着反作用力矩。汽车驱动桥结构型式和设计参数除对汽车的可靠性与耐久性有重要影响外，也对汽车的行驶性能如动力性、经济性、平顺性、通过性、机动性和操动稳定性等有直接影响。 汽车驱动桥设计涉及的机械零部件及元件的品种极为广泛，对这些零部件、元件及总成的制造也几乎要设计到所有的现代机械制造工艺，设计出结构简单、
12、工作可靠、造价低廉的驱动桥，能大大降低整车生产的总成本，推动汽车经济的发展，并且通过对汽车驱动桥的学习和设计实践，可以更好的学习并掌握现代汽车设计与机械设计的全面知识和技能，以及整体的思维和运算校核等本领，绘图也是其中非常重要的环节，所以本题设计一款结构优良的轻型货车驱动桥具有一定的实际意义 汽车驱动桥是汽车的主要部件之一，其基本功用是增大由传动轴或变速器传来的转矩，再将转矩分配给左右驱动车轮，并使左右驱动车轮具有汽车行驶运动所要求的差速功能；驱动桥处于动力传动系的末端，选择适当的主减速比，保证汽车具有足够的离地间隙，齿轮及其他传动件工作平稳都是需要保证的参量，同时驱动桥还要承受作用于路面和车架或承载车身之间的铅垂力、纵向力、横向力及其力矩。驱动桥质量、性能的好坏直接影响整车的安全性、经济性、舒适性、可靠性。设计汽车后驱动桥能使学生综合运用所学专业知识，熟练CAD绘图技能。 本设计的研究目的在于通过对汽车整体的匹配性设计完成驱动桥的主减速器，差速器等零部件型号的设计与计算，并完成校核和对单机主减速器的全面设计，然后进行批量生产。完成所要求的课题设计的任务。通过设计驱动桥还应掌握对整车的了解，其中包括各个部件的相互作用关系,车身和电器系统对驱动桥的影响和配合的过程，因此对整车有更熟悉更全面的掌握。以至在今后的生产生活中得到更有效的运用。 2
