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配分置式液压系统的拖拉机,在耕地作业及悬挂农具运输中,常发生液压软管爆破的现象。当发生这种故障时,液压油高速向外喷射,农具迅速下落。有些拖拉机更换新液压软管后不久再次爆破。下面介绍一下液压软管爆破的原因及预防措施: (1)悬挂农具运输时,拖拉机在不平路面上高速行驶,致使农具上下颠簸,产生较强的冲击震动,并全部加在支承点油缸活塞杆上,使油缸下腔及液压软管中产生比原来压力大几倍的冲击载荷,超过了液压软管所能承受的耐压极限。此时,分配器的安全阀又
With split hydraulic system tractors, farmland operations and suspension farm transport, often occur in the phenomenon of hydraulic hose burst. When this kind of breakdown occurs, the hydraulic oil sprays out at a high speed, and the farm implements rapidly fall. Some tractors burst again soon after replacing the new hydraulic hose. The following describes the reasons for hydraulic hose blasting and preventive measures: (1) suspension of agricultural transport, the tractor on the uneven road at high speed, resulting in agricultural tools up and down bumps, resulting in strong shock and vibration, and all added to the support point cylinder piston rod On the lower cylinder and hydraulic hoses in the hydraulic pressure than the original several times the impact load, exceeding the hydraulic hoses can withstand the pressure limit. At this point, the dispenser safety valve again