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前几年我们厂自制了一台大台面(2200×1500毫米~2)框架式的三百吨油压机。在使用过程中发现,当油缸活塞开始回程这一瞬间,液压系统发生猛烈地冲击,这时可以听到一个很大的撞击声,同时还可看到油压管路上有很大的振动。由于活塞在每一次回程时都产生一次大的冲击,以致使液压管路中一些接头薄弱的地方产生漏油,即使操作者十分小心谨慎也难除掉。造成这种液压冲击的原因,是因为当油压机压制工件时,液体压力在200公斤/厘米~2以上,并以速度v向前运动,此时液压系统各部
A few years ago our factory made a large mesa (2200 × 1500 mm ~ 2) frame 300 tons of hydraulic machine. During use, it was found that when the cylinder piston began to return stroke, the hydraulic system violently impacted, then a loud crashing sound could be heard and a great vibration was observed on the hydraulic pipe. Because the piston produces a large impact on each return stroke, oil leaks in some of the hydraulic lines where the connections are weak make it difficult to remove even with the utmost care. The reason for this hydraulic shock is that when the hydraulic press compresses the work piece, the liquid pressure is above 200 kg / cm 2 and moves forward at speed v, and at this moment the hydraulic system parts