液壓係統的留意事項

    液壓係統的留意事項

    youyidianjixiechangshiderendouxiaode

，nenglianghuixianghuzhuanhuande
，erbazhegexuewenyunyongdaoyeyaxitongshangjieshiyeyaxitongdegonglvsunshishizuihaobuguole

，yeyaxitonggonglvyifangmianhuixingchengnengliangshangdesunshi，shixitongdezongxiaolvjiangluo，lingyifangmian，sunshidiaodezheyijubunengliangjianghuizhuanbianchengreneng
，shiyeyayoudewendushenggao，youyetuibian，zhaozhiyeyashebeichengxianmaobing。yiner，shejiyeyaxitongshi
，zaimanzuyunyongqingqiudeqiantixia，haiyingchongpeisisuojiangdixitongdegonglvsunshi。

    第一

，從動力源——泵的方麵來思索，思索到執行器工作情況的多樣化，有時係統需求大流量，低壓力；有(you)時(shi)又(you)需(xu)求(qiu)小(xiao)流(liu)量(liang)，高(gao)壓(ya)力(li)。所(suo)以(yi)選(xuan)擇(ze)限(xian)壓(ya)式(shi)變(bian)量(liang)泵(beng)為(wei)宜(yi)

，由(you)於(yu)這(zhe)品(pin)種(zhong)型(xing)的(de)泵(beng)的(de)流(liu)量(liang)隨(sui)係(xi)統(tong)壓(ya)力(li)的(de)變(bian)化(hua)而(er)變(bian)化(hua)。當(dang)係(xi)統(tong)壓(ya)力(li)降(jiang)低(di)時(shi)，流(liu)量(liang)比(bi)擬(ni)大(da)，能(neng)滿(man)足(zu)執(zhi)行(xing)器(qi)的(de)快(kuai)速(su)行(xing)程(cheng)。當(dang)係(xi)統(tong)壓(ya)力(li)進(jin)步(bu)時(shi)流(liu)量(liang)又(you)相(xiang)應(ying)減(jian)小(xiao)，能(neng)滿(man)足(zu)執(zhi)行(xing)器(qi)的(de)工(gong)作(zuo)行(xing)程(cheng)。這(zhe)樣(yang)既(ji)能(neng)滿(man)足(zu)執(zhi)行(xing)器(qi)的(de)工(gong)作(zuo)請(qing)求(qiu)

，又(you)能(neng)使(shi)功(gong)率(lv)的(de)耗(hao)費(fei)比(bi)擬(ni)合(he)理(li)。

    dier，yeyayouliujinggeleiyeyafashibukefangzhidecunzaizheyalisunshiheliuliangsunshi
，zheyijubudenengliangsunshizaiquanbunengliangsunshizhongzhanyoujiaodadebizhong。yiner
，helixuanzeyeyaqi

，tiaozhengyalifadeyaliyeshijiangdigonglvsunshideyigezhongyaofangmian。liuliangfaanxitongzhongliuliangtiaolifanweixuanqubingbaozhengqizuixiaowendingliuliangnengmanzuyunyongqingqiu

，yalifadeyalizaimanzuyeyashebeizhengchanggongzuodezhuangkuangxia
，jinliangqujiaodideyali。

    第三，假如執行用具有調速的請求
，那麼在選擇調速回路時
，既要滿足調速的請求
，又要盡量減少功率損失。常見的調速回路主要有：jieliutiaosuhuilu，rongjitiaosuhuilu，rongjijieliutiaosuhuilu。qizhongjieliutiaosuhuiludegonglvsunshida，disuwendingxinghao。errongjitiaosuhuilujiwuyiliusunshi，yewujieliusunshi
，xiaolvgao，dandisuwendingxingcha。jiaruyaotongshimanzuliangfangmiandeqingqiu，kecaiyongchayashibianliangbenghejieliufazuchengderongjijieliutiaosuhuilu，bingshijieliufaliangduandeyalichajinliangxiao，yijianxiaoyalisunshi。

    第(di)四(si)
，合(he)理(li)選(xuan)擇(ze)液(ye)壓(ya)油(you)。液(ye)壓(ya)油(you)在(zai)管(guan)路(lu)中(zhong)活(huo)動(dong)時(shi)，將(jiang)呈(cheng)現(xian)出(chu)黏(nian)性(xing)
，而(er)黏(nian)性(xing)過(guo)高(gao)時(shi)
，將(jiang)產(chan)生(sheng)較(jiao)大(da)的(de)內(nei)摩(mo)擦(ca)力(li)，形(xing)成(cheng)油(you)液(ye)發(fa)熱(re)，同(tong)時(shi)增(zeng)加(jia)油(you)液(ye)活(huo)動(dong)時(shi)的(de)阻(zu)力(li)。當(dang)黏(nian)性(xing)過(guo)低(di)時(shi)，易(yi)形(xing)成(cheng)走(zou)漏(lou)
，將(jiang)降(jiang)低(di)係(xi)統(tong)容(rong)積(ji)效(xiao)率(lv)
，因(yin)而(er)，普(pu)通(tong)選(xuan)擇(ze)黏(nian)度(du)適(shi)合(he)且(qie)黏(nian)溫(wen)特(te)性(xing)比(bi)擬(ni)好(hao)的(de)油(you)液(ye)。另(ling)外(wai)，當(dang)油(you)液(ye)在(zai)管(guan)路(lu)中(zhong)活(huo)動(dong)時(shi)，還(hai)存(cun)在(zai)著(zhe)沿(yan)程(cheng)壓(ya)力(li)損(sun)失(shi)和(he)部(bu)分(fen)壓(ya)力(li)損(sun)失(shi)
，因(yin)而(er)設(she)計(ji)管(guan)路(lu)時(shi)盡(jin)量(liang)縮(suo)短(duan)管(guan)道(dao)，同(tong)時(shi)減(jian)少(shao)彎(wan)管(guan)。

    以yi上shang就jiu是shi防fang止zhi液ye壓ya係xi統tong功gong率lv損sun失shi所suo提ti出chu來lai的de幾ji點dian工gong作zuo，但dan是shi影ying響xiang液ye壓ya係xi統tong功gong率lv損sun失shi的de要yao素su還hai有you很hen多duo，所suo以yi假jia如ru當dang詳xiang細xi設she計ji一yi液ye壓ya係xi統tong時shi，還hai需xu綜zong合he思si索suo其qi他ta各ge個ge方fang麵mian的de請qing求qiu。