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摘要目前,行星齿轮传动在工程机械领域应用广泛,与其他齿轮传动相比,其具有体积小、重量轻、结构紧凑、传递效率高等优点。
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本设计中采用行星式动力换档变速箱，它具有3个离合器和3根轴，且轴安装在壳体内，使变速箱结构简单、便于文修。变速箱具有两个前进档和一个后退档，可以产生3个速度。
本设计为ZL50轮式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、文修困难等缺点。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。
首先选择装载机的传动方案，变速箱有两个前进档位，一个后退档位，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。22829
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刚度计算以及轴承寿命验算，变速箱满足了设计要求。
毕业论文关键字:轮式装载机；行星式变速器，动力换挡
Design of loader power shift gearbox
Abstract: At present , a wide range of planetary gear drive in the field of mechanical engineering applications , compared with other gear , which has a small size, light weight , compact, high efficiency transmission .
Used in the design of planetary power shift transmission , which has three clutches and three shafts, and shaft mounted within the housing , so that the transmission of simple structure, easy maintenance. Gearbox with two forward gears and one reverse gear , can produce three speeds.
The design for the ZL50 wheel loaders planetary power shift transmission , this gearbox has a compact structure , large load capacity , high transmission efficiency, small teeth loads , structural stiffness, the input and output shaft concentric and easy to implement with automatic power shift , etc., but also a complex, multi- part , high- precision manufacturing , maintenance difficulties and other disadvantages. With the improvement of the accuracy of the manufacturing process , not only in the engineering of this vehicle gearbox has been widely applied in automotive applications is increasingly widespread.
First select the program loader transmission , gearbox with two forward gears , one reverse gear , the shift can be achieved by manipulating two shift clutches. Clutch type dual clutch , shift quickly and smoothly .
Finally, with the determination and calculation of the main parameters of the transmission gear , as well as by the strength stiffness bearing life calculation checking the main components , transmissions meet the design requirements.
Keywords : wheel loaders ; planetary transmission, power shift
目录
摘要 Ⅱ
Abstract Ⅲ
一、 装载机动力换档变速箱概述 1
1.1 轮式装载机产品应用简述 1
1.2产品的现状 1
1.2.1 国内现状 1
1.2.2 国外现状 2
1.3产品的发展方向 2
1.4课题的目的与要求 3
1.5设计的技术要求与参数. 3
二、 ZL50装载机动力换档变速箱方案设计 5
2.1方案的选择与确定 5
2.1.1供选择的二种变速箱方案 5
2.1.2 三种变速器各自的特点 5
2.1.3 确定方案 5
2.2行星齿轮装置的性能与特点 6
2.3 各档位及传动原理 6
2.4 装载机变速箱传动路线 7
三 、设计计算 11
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