According to the problems of mechanical transmission and the high load requirement of forestry production department, it is necessary to change the original mechanical transmission into hydraulic transmission system. This paper introduced the characters of the forest monorail vehicle with hydraulic system. At the same time, the working principle of hydraulic transmission system is also analyzed detailedly.%针对目前林用单轨运输车所采用的机械传动方式存在问题以及林业生产单位对其大载重量的要求,将原机械传动方式改进为液压传动方式。介绍了单轨运输车采用液压传动方式的特点,分析了该液压系统的工作原理。
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