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                                                                                                                                                                                                                                                                                                                                                    輕型起重機減速機漏油的原因是什么?
                                                                                                                                                                                                                                                                                                                                                    文章作者:system 上傳更新:2019-01-24

                                                                                                                                                                                                                                                                                                                                                     輕型起重機減速機漏油的原因是什么?
                                                                                                                                                                                                                                                                                                                                                        一、減速機內外產生較大的壓力差:減速機運行轉動過程中,運動摩擦發熱以及受外界環境溫度的影響,使減速機溫度升的過高,如果沒有透氣孔等出氣地方,則起重機機內壓力逐漸增加,機內溫度也會越高,與外界的壓力差便會越大,潤滑油在壓差作用下,從縫隙處漏出。
                                                                                                                                                                                                                                                                                                                                                        二、減速機結構設計的不合理。
                                                                                                                                                                                                                                                                                                                                                        1)檢查孔蓋板太薄,上緊螺栓易產生變形,使結合面不平,從接觸縫隙漏油;2)減速機制造生產過程中,鑄件未進行時效處理或退火,未消除內應力,必然發生變形,產生間隙,導致泄漏;3)箱體上沒有設計回油槽,潤滑油積聚在端蓋、軸封、結合面等處,在壓差作用下,從間隙處向外漏;4)軸封結構設計不合理。早期的減速機多采用油溝、氈圈式軸封結構,組裝時使毛氈受壓縮產生變形,而將結合面縫隙密封起來。如果軸頸與密封件接觸不十分理想,由于毛氈的補償性能極差,密封在短時間內即失效。油溝上雖有回油孔,但極易堵塞,回油作用難以發揮。
                                                                                                                                                                                                                                                                                                                                                        三、加油量過多:減速機在運轉過程中,油池被攪動得很厲害,潤滑油在機內到處飛濺,如果加油量過多,使大量潤滑油積聚在軸封、結合面等處,導致泄漏。
                                                                                                                                                                                                                                                                                                                                                        四、檢修工藝不當:在設備檢修時,由于結合面上污物清除不徹底,或密封膠選用不當、密封件方向裝反、不及時更換密封件等也會引起漏油。

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