装载机作为生活和工作中非常常见的工程机械之一，其工作效率得以提高，但是使用时间长了或保养不到位的话，装载机还是会出现一些问题的，比如装载机的曲轴箱出现异响。

As one of the very common construction machinery in life and work, the working efficiency of the loader can be improved, but if it is used for a long time or the maintenance is not in place, the loader will still have some problems, such as abnormal noise in the crankcase of the loader.

装载机在进行高速运转的时候，会出现“咯噔、咯噔”闷击声，当在减小油门的时候更为明显，这是主轴瓦轴向间隙太大所导致的；沿汽缸上下各处均有类似小铁锤轻击铁块的声音，排气管会冒蓝烟（可能还会伴有烧机油的现象），用长柄螺丝刀抵在汽缸体处听起来更加明显，即可断定是活塞环侧隙太大或环折断所导致的。

When the loader is running at high speed, there will be a "click, click" dull sound, which is more obvious when reducing the throttle, which is caused by the too large axial clearance of the main shaft pad; There is a sound similar to the sound of a small hammer tapping an iron block up and down the cylinder, and the exhaust pipe will emit blue smoke (possibly accompanied by the phenomenon of burning oil). It sounds more obvious to use a long handle screwdriver against the cylinder block. It can be concluded that it is caused by too large side clearance of the piston ring or broken ring.

在装载机汽缸全长部位听到沉闷的“空咚、空咚”敲击声，打开加机油口盖的时候，发现有气泡（说明存在漏气现象），这是活塞与缸套配合间隙太大所导致的；如果在同一部位略靠曲轴方向听到“嘎、嘎、嘎”撞击声，则是连杆扭曲导致其在工作中摇摆产生敲击声，后两种声响在改变柴油机的转速时更加明显，而且更方便区别。

A dull knocking sound of "empty thump, empty thump" was heard at the full length of the loader cylinder. When opening the oil filler cover, bubbles were found (indicating air leakage), which was caused by the large matching gap between the piston and the cylinder liner; If the impact sound of "GA, GA, GA" is heard in the same part slightly in the direction of the crankshaft, it is the distortion of the connecting rod that causes it to swing and produce knocking sound during operation. The latter two sounds are more obvious when changing the speed of the diesel engine, and it is more convenient to distinguish.

在装载机突然改变负荷的时候，在曲轴箱的附近可以清晰地听到短促的钝哑敲击声，并随着负荷或转速增加而发生急剧变化，响声不断加大，无负荷的时候则不明显。这是连杆瓦过度磨损而导致连杆瓦与连杆轴颈配合间隙过大所导致的；如果使柴油机某缸断油，此异响则会立即消失，这说明是该缸连杆出现瓦响。

When the loader suddenly changes the load, the short dull knocking sound can be clearly heard near the crankcase, and changes sharply with the increase of load or speed. The sound increases continuously, but it is not obvious when there is no load. This is caused by excessive wear of connecting rod bush, resulting in excessive fit clearance between connecting rod bush and connecting rod journal; If the oil of a cylinder of the diesel engine is cut off, the abnormal sound will disappear immediately, which indicates that the connecting rod of the cylinder has tile sound.

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