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 国家开放大学 / 液压气动技术

下图所示的压力机平衡回路,要求顺序阀有一定的调定压力,防止换向阀处于中位时活塞向下运动,起到锁紧作用。已知液压缸无杆腔面积A1=80cm2,有杆腔面积A2=40cm2,活塞与运动部分自重G=6000N,运动时活塞上的摩擦阻力f=2000N,向下压制工件时的负载阻力F=24000N,试求顺序阀和溢流阀的调定压力各为多少?


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