在升降貨梯http://www.weheartgrub.com/更換活塞環時，如果將環錯入在氣缸磨損最大的上部進行開口間隙的檢查，或根本就沒有按規定的開口間隙數值銼削，這樣當活塞環下行到氣缸套下部磨損最小部位時或因受熱膨脹，開口間隙消失而脹死，使環緊壓在氣缸套的內壁上動，導致折斷。由于在氣缸套磨損后氣缸內徑不等的情況下，活塞環除了承受活塞進行往復運動外，它自身還在環槽內作一張一合的運動，從而使環與環槽的上下平面磨損加劇。
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.
       
一般情況下，升降貨梯http://www.weheartgrub.com/活塞環質量太差，活塞環開口間隙過小，舊氣缸換新環后第一道氣環撞擊缸套臺肩，裝配時活塞環開口擴展得過大及缸內積炭嚴重都會導致內活塞環折斷。
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.