论文部分内容阅读
蓄能器是否工作正常,许多汽车起重机操作者是以卷扬机制动是否能开启来判断的,这种判断方法虽说简便,但缺乏根据,因此具有一定的危险性。正如文中提到的,即使蓄能器中氮气压力大大低于规定值3.5～4.5MPa,只剩下0.8MPa压力时,如被液压油充分压缩,也能让蓄能器产生开启卷扬机制动的压力。但是,在开启制动之后,蓄能器压力显然要大大下降,如果这时让离合器液压缸进油,就会造成离合器接合力下降。这样,在起吊重物时就会造成离合器打滑。这是十分危险的。因此,蓄能器内氮气压力要定期检查,如低于规定就要进行补充。不能以卷扬机制动能否开启作为判断蓄能器工作是否正常的标准。
Whether the accumulator is working properly or not, many truck crane operators judge by whether the winch brake can be turned on or not. Although this method of judgment is simple, it lacks grounds and therefore has some dangers. As mentioned in the article, even if the nitrogen pressure in the accumulator is much lower than the stipulated value of 3.5 ~ 4.5MPa and only 0.8MPa pressure is left, if the accumulator is sufficiently compressed by the hydraulic oil, the accumulator can be opened to brake the winch pressure. However, after the brake is turned on, the accumulator pressure obviously drops drastically. If the clutch cylinder is operated at this moment, the clutch engagement force will decrease. This will cause the clutch to slip when lifting heavy objects. This is very dangerous. Therefore, the nitrogen pressure in the accumulator should be checked regularly, if it is lower than the requirement, it will be replenished. Can not winch brake can open as a judge to determine whether the normal work of the accumulator.