文档介绍：摘要
本设计为ZL20装载机行星式动力换挡变速箱,此变速箱具有结构紧凑、载荷容量大、传动效率高、齿间负荷小、结构刚度好、输入输出轴同心以及便于实现动力与自动换挡等优点,同时也有结构复杂、零件多、制造精度高、维修困难等缺点。随着制造加工精度的提高,这种变速箱不仅在工程车辆上得到了广泛应用,在汽车上的应用也日益广泛。
首先通过发动机与液力变矩器的匹配设计计算,使发动机功率得到充分利用,进而改善装载机牵引性能,然后选择装载机的传动方案,变速箱有前进两个档位,后退一个档位,通过操纵两个换挡离合器即可实现换挡。离合器类型为双离合器,换挡迅速平稳。
最后进行了变速箱主要参数的确定和配齿计算,通过主要零部件的强度计算以及轴承寿命验算,变速箱满足了设计要求。
关键词:轮式装载机,行星式变速器,动力换挡
Abstract
The design for the ZL20 loader ary power shift transmission, the gearbox has pact, load capacity, transmission efficiency, the load between teeth small, the structure stiffness, input and output shaft concentric and easy to implement dynamic and automatic shift, etc., but also plex, multi-part, high precision manufacturing, maintenance problems and other ings. As the manufacturing process to improve the accuracy of such transmission-type vehicles not only in engineering has been widely used in automotive applications are increasingly widespread.
First, by matching the engine and torque converter design and calculation, the engine power are fully utilized, Loader in order to improve traction performance, and then select the loader transmission scheme, transmission has two forward gears, back a gear, shifting through the manipulation of the two clutch shift can be realized. Clutch type dual clutch, shift quickly and smoothly.
Finally, to determine the main parameters of the transmission and distribution gear calculation, calculated by the intensity of the ponents and checking the bearing life, transmission to meet the design requirements.
Keywords: wheel loaders, ary transmission, power shift .
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、主传动比及终传动比的确定 12
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