1.空氣對挖掘機液壓油污染的危害(1)產生空穴、氣蝕作用，導致中國金屬和密封材料的破壞；產生影響噪音、振動和爬行現象，降低我國液壓控制系統的穩定性。維修挖掘機第一臺液壓挖掘機由法國波克蘭工廠發明成功。由于液壓技術的應用，20世紀40年代有了在拖拉機上配裝液壓反鏟地懸掛式挖掘機。挖掘機維修最重要的三個參數：操作重量（質量），發動機功率和鏟斗斗容。挖掘機修理最初挖掘機(ji)是手動(dong)(dong)(dong)的(de)(de)，從發明到現(xian)在已(yi)經有(you)(you)一(yi)百三十多(duo)年了，期間經歷(li)了由(you)蒸汽(qi)驅(qu)動(dong)(dong)(dong)斗回(hui)轉(zhuan)挖掘機(ji)到電力(li)驅(qu)動(dong)(dong)(dong)和內燃機(ji)驅(qu)動(dong)(dong)(dong)回(hui)轉(zhuan)挖掘機(ji)、應(ying)用(yong)(yong)機(ji)電液一(yi)體化(hua)(hua)(hua)技術的(de)(de)全自動(dong)(dong)(dong)液壓(ya)(ya)(ya)挖掘機(ji)的(de)(de)逐步(bu)發展過程。(2)使(shi)液壓(ya)(ya)(ya)泵(beng)的(de)(de)容積利用(yong)(yong)效率不(bu)斷下降，能量巨大(da)損失風險增大(da)，液壓(ya)(ya)(ya)操作(zuo)系(xi)統(tong)(tong)發展不(bu)能充分發揮(hui)自己應(ying)有(you)(you)的(de)(de)效能。(3)液壓(ya)(ya)(ya)油(you)(you)(you)導熱性(xing)變(bian)差，油(you)(you)(you)溫升高，引起(qi)學(xue)生化(hua)(hua)(hua)學(xue)環(huan)(huan)境變(bian)化(hua)(hua)(hua)。 2.進(jin)空(kong)(kong)氣(qi)(qi)的(de)(de)主要(yao)問題原(yuan)因分析及其相(xiang)關解決這(zhe)些(xie)措施(1)接頭松動(dong)(dong)(dong)或(huo)油(you)(you)(you)封、密(mi)封環(huan)(huan)損壞而(er)吸(xi)(xi)入空(kong)(kong)氣(qi)(qi)。液壓(ya)(ya)(ya)驅(qu)動(dong)(dong)(dong)系(xi)統(tong)(tong)管(guan)理應(ying)有(you)(you)一(yi)種良好的(de)(de)密(mi)封性(xing)，各接頭應(ying)牢牢固定(ding)，并(bing)確保(bao)油(you)(you)(you)箱(xiang)密(mi)封完好，這(zhe)樣(yang)可(ke)(ke)防止外界空(kong)(kong)氣(qi)(qi)可(ke)(ke)以(yi)進(jin)入而(er)污染信息系(xi)統(tong)(tong)。(2)吸(xi)(xi)油(you)(you)(you)管(guan)路(lu)(lu)及連接網絡系(xi)統(tong)(tong)的(de)(de)管(guan)路(lu)(lu)被(bei)磨穿、擦(ca)破或(huo)腐(fu)蝕而(er)使(shi)城市空(kong)(kong)氣(qi)(qi)直接進(jin)入。應(ying)合(he)理規(gui)劃設(she)(she)計(ji)采用(yong)(yong)液壓(ya)(ya)(ya)動(dong)(dong)(dong)力(li)系(xi)統(tong)(tong)數(shu)據結構，使(shi)管(guan)路(lu)(lu)走(zou)向市場布局更(geng)加合(he)理化(hua)(hua)(hua)；要(yao)保(bao)持管(guan)路(lu)(lu)的(de)(de)清潔，減少社會(hui)外界腐(fu)蝕。(3)加油(you)(you)(you)時(shi)由(you)于我們不(bu)注(zhu)意而(er)產生的(de)(de)氣(qi)(qi)泡被(bei)帶入油(you)(you)(you)箱(xiang)內并(bing)混(hun)入系(xi)統(tong)(tong)中(zhong)。油(you)(you)(you)箱(xiang)中(zhong)應(ying)設(she)(she)置一(yi)些(xie)專用(yong)(yong)元器件，減少物流系(xi)統(tong)(tong)出(chu)現(xian)氣(qi)(qi)泡的(de)(de)生成。在回(hui)油(you)(you)(you)管(guan)與(yu)液壓(ya)(ya)(ya)泵(beng)吸(xi)(xi)油(you)(you)(you)口之間應(ying)設(she)(she)置隔板，在吸(xi)(xi)油(you)(you)(you)管(guan)上(shang)方設(she)(she)置也(ye)是一(yi)個氣(qi)(qi)泡分離(li)網，就可(ke)(ke)以(yi)實現(xian)分離(li)大(da)約90%的(de)(de)氣(qi)(qi)泡。