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8.怎样正确使用东方红—54/75推土机液压系操纵手柄?答:控制分配器手柄进行推土作业包括:铲土和集土、运土、卸土、返回四个顺序。操纵时应注意:(1)不要把手柄长期按压在工作位置。若长期按压,当推土铲升降到极限位置时,手柄即无法自动跳回“中立”位置,则油泵会不断供油,使油压迅速升高至130～135公斤/厘米~2,从而将使安全阀打开泄油。此时高压软管即在过高压力下工作。如果时间较长,软管往往因为油压急剧增高而发生爆裂。不仅如此,由于使安全阀经常开闭,也易导致损坏。
8. How to correctly use Dongfanghong-54/75 bulldozer hydraulic control handle? A: The control of the dispenser handle bulldozing operations include: shovel and soil, soil transport, unloading soil, return to the four order. Manipulation should pay attention to: (1) Do not long-term press the handle in the working position. If long-term pressing, when the blade lift to the limit position, the handle that can not automatically jump back to the “neutral” position, the pump will continue to supply oil, the hydraulic pressure rapidly increased to 130 ~ 135 kg / cm ~ 2, This will open the relief valve to drain. High-pressure hose at this time that is working under pressure. Hoses tend to burst due to sharp increases in oil pressure over time. Not only that, due to the safety valve often open and close, but also easily lead to damage.