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我县在使用ZF—75分配器的液压悬挂装置中,曾发生过液压油管爆裂,后来我们对以下几个问题进行了分析和注意,避免了液压胶管的爆裂。 1.由于经常用“中立”位置耕地,分配器通往油缸上下腔的油孔封闭。因为耕地时地面起伏不平,强制主油缸活塞上下移动,使管路油压急剧增高而爆裂。故耕地时应将手柄扳到“浮动”位置。 2.拖拉机悬挂农具在地头或运输时,高速行驶,特别在不平的路上,由于农具的震动,液压系统增加了动负荷,比原来液压系统额定压力高3～5倍,而这时分配器处于“中立”位置,安全阀不起作用造成胶
Our county in the use of ZF-75 distributor hydraulic suspension device, there have been hydraulic hose burst, then we have the following questions were analyzed and pay attention to avoid the hydraulic hose burst. 1. Due to the frequent use of “neutral” position arable land, the distributor opens into the oil hole in the upper and lower chambers of the cylinder. Because of uneven ground when the farmland, forced the main cylinder piston moves up and down, so that a sharp rise in pipeline pressure and burst. Therefore, the farm should be pulled to the handle “floating ” position. 2. tractor hanging tools in the field or transport, high-speed, especially in the uneven road, due to the vibration of farm tools, hydraulic system increased dynamic load than the original hydraulic system rated pressure 3 to 5 times higher, and when the distributor is in the “Neutral” position, safety valve does not work causing glue