挖掘機液壓泵(beng)的(de)維護與應用

液壓系統的功率主要取決于液壓泵的體積功率..當體積功率下降到72%時，必須進行常規修理，更換軸承和老化密封，更換或糾正超出合作間隙的摩擦副，使其功能得以恢復。維修挖掘機挖掘機最重要的三個參數：操作重量（質量），發動機功率和鏟斗斗容。修理挖掘機常見的挖掘機(ji)(ji)結(jie)構(gou)(gou)包括，動(dong)(dong)力(li)裝置，工作裝置，回轉機(ji)(ji)構(gou)(gou)，操(cao)縱機(ji)(ji)構(gou)(gou)，傳動(dong)(dong)機(ji)(ji)構(gou)(gou)，行走(zou)機(ji)(ji)構(gou)(gou)和輔助設施等(deng)。本文(wen)主(zhu)要介(jie)紹了直軸(zhou)斜盤柱塞泵的應用與維(wei)修..

一(yi)。液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)的(de)(de)供(gong)油(you)(you)(you)(you)方(fang)式(shi)分為壓(ya)(ya)(ya)(ya)(ya)(ya)力供(gong)油(you)(you)(you)(you)式(shi)和自(zi)吸式(shi)兩種。壓(ya)(ya)(ya)(ya)(ya)(ya)力供(gong)油(you)(you)(you)(you)式(shi)液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)大(da)多(duo)選(xuan)用有氣(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)的(de)(de)油(you)(you)(you)(you)箱(xiang)(xiang)，液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)本身設有一(yi)個補充泵(beng)(beng)(beng)(beng)，向液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)的(de)(de)進油(you)(you)(you)(you)口供(gong)給壓(ya)(ya)(ya)(ya)(ya)(ya)力油(you)(you)(you)(you)。自(zi)吸液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)自(zi)吸能力強，不需要外部供(gong)油(you)(you)(you)(you)。對于(yu)氣(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)供(gong)應(ying)的(de)(de)液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)油(you)(you)(you)(you)箱(xiang)(xiang)，每次(ci)開機后，液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)油(you)(you)(you)(you)箱(xiang)(xiang)達到(dao)(dao)所施加的(de)(de)氣(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)后，方(fang)可操(cao)作(zuo)機器(qi)(qi)。例(li)如，液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)油(you)(you)(you)(you)箱(xiang)(xiang)氣(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)不足(zu)，會(hui)起到(dao)(dao)機器(qi)(qi)的(de)(de)作(zuo)用，使液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)和滑鞭(bian)脫落，造(zao)成泵(beng)(beng)(beng)(beng)內回(hui)油(you)(you)(you)(you)板(ban)和壓(ya)(ya)(ya)(ya)(ya)(ya)板(ban)異常磨損。選(xuan)擇(ze)補充油(you)(you)(you)(you)泵(beng)(beng)(beng)(beng)提供(gong)的(de)(de)柱塞(sai)泵(beng)(beng)(beng)(beng)。運行3000小時后，操(cao)作(zuo)人(ren)員應(ying)每天檢(jian)(jian)查柱塞(sai)泵(beng)(beng)(beng)(beng)1-2次(ci)，看液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)工作(zuo)聲音是否正常。如果發現液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)缸(gang)轉速(su)下降或車輛(liang)堵塞(sai)，應(ying)解體(ti)檢(jian)(jian)查補油(you)(you)(you)(you)泵(beng)(beng)(beng)(beng)葉輪邊緣是否有劃(hua)傷現象(xiang)，內齒輪泵(beng)(beng)(beng)(beng)間隙是否過大(da)。對于(yu)自(zi)吸柱塞(sai)泵(beng)(beng)(beng)(beng)，液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)油(you)(you)(you)(you)箱(xiang)(xiang)內的(de)(de)油(you)(you)(you)(you)不應(ying)低于(yu)油(you)(you)(you)(you)標準(zhun)的(de)(de)下限，并滿(man)足(zu)液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)油(you)(you)(you)(you)的(de)(de)用量。液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)油(you)(you)(you)(you)的(de)(de)清潔度越高，液(ye)壓(ya)(ya)(ya)(ya)(ya)(ya)泵(beng)(beng)(beng)(beng)的(de)(de)使用壽命(ming)越長。

2、液壓(ya)(ya)泵軸(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)柱(zhu)塞(sai)(sai)(sai)泵的(de)主要(yao)部(bu)件(jian)是(shi)(shi)軸(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)。如(ru)果(guo)軸(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)出(chu)現間隙，則液壓(ya)(ya)泵中三對摩擦副的(de)正(zheng)常間隙不能(neng)(neng)(neng)被(bei)破壞，這也會破壞各摩擦副靜(jing)壓(ya)(ya)支承(cheng)(cheng)(cheng)(cheng)(cheng)的(de)油膜厚度，降低柱(zhu)塞(sai)(sai)(sai)泵軸(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)的(de)使用壽(shou)命。根據(ju)液壓(ya)(ya)泵制造商提供(gong)的(de)數據(ju)，軸(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)的(de)均勻(yun)使用壽(shou)命為10000小時，需(xu)要(yao)更換一(yi)(yi)個(ge)新的(de)端(duan)口。拆卸(xie)軸(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)，沒有專業檢(jian)(jian)測(ce)儀器無(wu)法看到軸(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)間隙，只(zhi)能(neng)(neng)(neng)選(xuan)擇視覺，如(ru)果(guo)滾子外觀劃傷或變色，則有必(bi)要(yao)更換。在(zai)更換軸(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)時，應注(zhu)意(yi)原有軸(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)的(de)英(ying)文字(zi)母(mu)和類型，柱(zhu)塞(sai)(sai)(sai)泵軸(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)大多(duo)選(xuan)用大承(cheng)(cheng)(cheng)(cheng)(cheng)載(zai)能(neng)(neng)(neng)力軸(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)，好采購(gou)原廠家，原產品規格(ge)齊(qi)全，如(ru)果(guo)更換另一(yi)(yi)個(ge)品牌，則應咨(zi)詢(xun)有經驗的(de)軸(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)人員檢(jian)(jian)查(cha)更換，目(mu)的(de)是(shi)(shi)堅持軸(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)精(jing)度等(deng)級和承(cheng)(cheng)(cheng)(cheng)(cheng)載(zai)能(neng)(neng)(neng)力。

3三(san)對(dui)摩擦當副(fu)視圖和柱塞(sai)桿(gan)與孔3.1在氣缸活塞(sai)設(she)備替換規范的(de)(de)(de)表(biao)1（參見圖1）的(de)(de)(de)校正，如表(biao)各種空隙公差列出的(de)(de)(de)，根據本以(yi)下方式(shi)固定：（1）一(yi)汽(qi)缸套(tao)筒插入銅(tong)，銅(tong)套(tao)可以(yi)可選地選擇(ze)的(de)(de)(de)校正的(de)(de)(de)方法。首先，一(yi)組修剪成統一(yi)的(de)(de)(de)比例柱塞(sai)桿(gan)的(de)(de)(de)直徑(jing)，然后＃1000砂紙拋光上述(shu)的(de)(de)(de)外(wai)徑(jing)。