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一辆四平改装厂生产的自卸汽车正在倾卸泥土,驾驶员操纵气阀切断油泵传动,保持车箱在升起位置,下车查看卸车情况。由于大块泥土卡在出口处,加上落地的泥土堆积,车上尚余部分泥土没有自动流出,驾驶员搬动几下后箱板后转身上车,将车前移一段距离,以便卸完车上泥土。停车后刚一下车,车箱突然急速下落,只听“呯”地一声,车箱重重地落在车架上,驾驶员吓出一身冷汗。再接合油泵试图升起车箱时,车箱纹丝不动,液压失灵了。
A dump truck produced by a Siping modification plant is dumping the soil. The driver controls the valve to cut off the pump drive, keep the truck in a raised position and get off to check the unloading condition. As the large dirt stuck in the exit, together with the accumulation of dirt on the ground, the car did not part of the soil out of the automatic outflow, the driver moved a few times after the box board turned on the car, the car moved forward a certain distance in order to unload Car dirt. Just got off the car after the car suddenly dropped rapidly, just listen to “bang” sound, the car fell heavily on the frame, the driver scared a cold sweat. When re-engaging the pump trying to raise the trunk, the trunk is motionless and the hydraulic pressure is lost.