在升降货梯http://www.jntr168.com/更换活塞环时，如果将环错入在气缸磨损最大的上部进行开口间隙的检查，或根本就没有按规定的开口间隙数值锉削，这样当活塞环下行到气缸套下部磨损最小部位时或因受热膨胀，开口间隙消失而胀死，使环紧压在气缸套的内壁上动，导致折断。由于在气缸套磨损后气缸内径不等的情况下，活塞环除了承受活塞进行往复运动外，它自身还在环槽内作一张一合的运动，从而使环与环槽的上下平面磨损加剧。
When cargo lifter replacement rings, if the ring into the cylinder wear the biggest mistake of the upper part of the inspection opening gap, or simply do not have the required numerical aperture gap cutting and filing, so that when the piston ring down to the lower part of the cylinder liner wear minimal or due to thermal expansion, opening gaps disappear and die swell, so that the ring is pressed against the inner wall of the cylinder liner move, causing broken. Because in the case of the cylinder bore cylinder liner wear after ranging, piston rings in addition to withstand the piston reciprocates, but it still ring groove itself as one of a movement, so that the upper and lower planar ring and ring groove wear and tear.
       
一般情况下，升降货梯http://www.jntr168.com/活塞环质量太差，活塞环开口间隙过小，旧气缸换新环后第一道气环撞击缸套台肩，装配时活塞环开口扩展得过大及缸内积炭严重都会导致内活塞环折断。
Under normal circumstances, the poor quality of cargo lifter piston rings, piston ring opening gap is too small, the old cylinder renewal after the first ring ring shoulder hit liner, piston rings and cylinder openings extend too large coke assembly will result in severe broken piston ring.