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1.改进前的缺陷经济型农用液压挖掘机铰接回转装置,大都采用整体通轴式结构,如图1所示。这种结构主要存在以下3个缺陷:(1)结构复杂回转轴8与转向架9属于密封式装配结构。由于这种结构比较复杂,给回转轴承7的日常维护和润滑保养带来一定困难。而一旦回转轴承或相关零件出现故障,拆装和更换也比较麻烦。
1. Improvements before the defect Economical agricultural hydraulic excavator articulated slewing device, mostly using the overall through-axis structure, shown in Figure 1. This structure mainly has the following three defects: (1) the complex structure of the rotary shaft 8 and the bogie 9 are sealed assembly structure. Because of this structure is more complex, to the rotary bearing 7 of the routine maintenance and lubrication maintenance have some difficulties. And once the slewing bearing or related parts failure, disassembly and replacement is too much trouble.