
威海(hai)力建液壓(ya)設備廠
經營(ying)模式:生產加工
地址:山東省(sheng)威(wei)海市羊亭孫家灘工業園
主(zhu)營:液(ye)壓缸(gang),油缸(gang),液(ye)壓系統
業務熱線:
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對機械(xie)(xie)化施工(gong)(gong)企(qi)業(ye)來說,工(gong)(gong)程(cheng)機械(xie)(xie)技術狀(zhuang)(zhuang)況(kuang)的(de)(de)(de)良好與否是(shi)企(qi)業(ye)能否正(zheng)常生(sheng)產的(de)(de)(de)直接因素。就(jiu)液(ye)壓(ya)傳(chuan)動的(de)(de)(de)工(gong)(gong)程(cheng)機械(xie)(xie)而言,液(ye)壓(ya)系統(tong)(tong)的(de)(de)(de)正(zheng)常運行(xing)是(shi)其(qi)良好技術狀(zhuang)(zhuang)況(kuang)的(de)(de)(de)一個主要(yao)標(biao)志(zhi)。合格的(de)(de)(de)液(ye)壓(ya)油是(shi)液(ye)壓(ya)系統(tong)(tong)可靠運行(xing)的(de)(de)(de)保障(zhang),正(zheng)確的(de)(de)(de)維護是(shi)液(ye)壓(ya)系統(tong)(tong)可靠運行(xing)的(de)(de)(de)根本(ben)。為此,本(ben)人根據工(gong)(gong)作實踐,就(jiu)一般作業(ye)環境中工(gong)(gong)程(cheng)機械(xie)(xie)液(ye)壓(ya)系統(tong)(tong)的(de)(de)(de)維護作一粗略的(de)(de)(de)探討(tao)。
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選擇適合的液壓油
液(ye)(ye)壓(ya)(ya)(ya)(ya)油(you)(you)在液(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)統中起著傳遞壓(ya)(ya)(ya)(ya)力、潤(run)滑、冷卻、密封的(de)作(zuo)用(yong),液(ye)(ye)壓(ya)(ya)(ya)(ya)油(you)(you)選(xuan)擇不(bu)恰當(dang)是液(ye)(ye)壓(ya)(ya)(ya)(ya)系(xi)統早期故(gu)障和耐(nai)久性下(xia)降的(de)主(zhu)要(yao)(yao)原(yuan)因。應(ying)按隨(sui)機《使(shi)(shi)用(yong)說明書》中規定的(de)牌號(hao)選(xuan)擇液(ye)(ye)壓(ya)(ya)(ya)(ya)油(you)(you),特殊(shu)情況需要(yao)(yao)使(shi)(shi)用(yong)代用(yong)油(you)(you)時,應(ying)力求(qiu)其性能(neng)與原(yuan)牌號(hao)性能(neng)相同。不(bu)同牌號(hao)的(de)液(ye)(ye)壓(ya)(ya)(ya)(ya)油(you)(you)不(bu)能(neng)混(hun)合使(shi)(shi)用(yong),以(yi)防液(ye)(ye)壓(ya)(ya)(ya)(ya)油(you)(you)產生化(hua)學反應(ying)、性能(neng)發生變化(hua)。深褐色(se)、乳白(bai)色(se)、有異味的(de)液(ye)(ye)壓(ya)(ya)(ya)(ya)油(you)(you)是變質油(you)(you),不(bu)能(neng)使(shi)(shi)用(yong)。





液壓制(zhi)動(dong)(dong)(dong)系統產生(sheng)制(zhi)動(dong)(dong)(dong)效能不良的原(yuan)因(yin),一(yi)般可(ke)根據制(zhi)動(dong)(dong)(dong)踏(ta)(ta)板行程(cheng)(俗稱高、低)、踏(ta)(ta)制(zhi)動(dong)(dong)(dong)踏(ta)(ta)板時的軟硬感覺、踏(ta)(ta)下制(zhi)動(dong)(dong)(dong)踏(ta)(ta)板后的穩定性以及(ji)邊疆多腳制(zhi)動(dong)(dong)(dong)時踏(ta)(ta)板高度來判斷。
1.一般制動(dong)時踏板(ban)高度(du)太低(di)zhi動(dong)效(xiao)能不良。如連續(xu)兩腳(jiao)或幾腳(jiao)制動(dong),踏板(ban)高度(du)隨這(zhe)高且制動(dong)效(xiao)能好轉(zhuan),說明制動(dong)鼓與(yu)磨擦(ca)片或總泵活(huo)塞與(yu)推桿的間隙過大。
2維(wei)持制(zhi)(zhi)動時,踏(ta)板的高度若緩慢或(huo)迅(xun)速下降(jiang),說明制(zhi)(zhi)動管路某處裂紋、接頭密(mi)(mi)閉(bi)不良(liang)或(huo)分(fen)泵(beng)皮(pi)碗密(mi)(mi)封(feng)不良(liang),其(qi)回位(wei)彈簧過軟或(huo)折斷,或(huo)總泵(beng)皮(pi)碗、皮(pi)圈密(mi)(mi)封(feng)不良(liang),回油(you)閥及出油(you)閥不良(liang)。可首先踏(ta)下制(zhi)(zhi)動踏(ta)板,觀察有無制(zhi)(zhi)動液滲漏部位(wei)。若外(wai)部正常,則應檢查分(fen)泵(beng)或(huo)總泵(beng)故障。
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液(ye)壓(ya)(ya)(ya)(ya)閥(fa)在(zai)(zai)液(ye)壓(ya)(ya)(ya)(ya)系統中的(de)(de)工(gong)作(zuo)方式(shi)是(shi)閥(fa)體和閥(fa)芯(xin)相對(dui)(dui)運動(dong)(dong),這種工(gong)作(zuo)方式(shi)不可避免(mian)的(de)(de)就是(shi)磨損。液(ye)壓(ya)(ya)(ya)(ya)閥(fa)的(de)(de)閥(fa)體和閥(fa)芯(xin)進行相對(dui)(dui)運動(dong)(dong)的(de)(de)過程中,會(hui)不斷的(de)(de)摩擦,在(zai)(zai)工(gong)作(zuo)一段時(shi)間(jian)后,液(ye)壓(ya)(ya)(ya)(ya)閥(fa)各元(yuan)件之(zhi)(zhi)間(jian)的(de)(de)尺寸(cun)、形狀、質量(liang)等發生變化(hua),不再(zai)是(shi)液(ye)壓(ya)(ya)(ya)(ya)閥(fa)原有的(de)(de)特性,在(zai)(zai)液(ye)壓(ya)(ya)(ya)(ya)閥(fa)工(gong)作(zuo)中就會(hui)失效,出現故障。例如(ru),在(zai)(zai)液(ye)壓(ya)(ya)(ya)(ya)系統中的(de)(de)減壓(ya)(ya)(ya)(ya)閥(fa)工(gong)作(zuo)中,錐(zhui)閥(fa)和閥(fa)座之(zhi)(zhi)間(jian)因為長時(shi)間(jian)的(de)(de)摩擦、磨損,造成(cheng)零件之(zhi)(zhi)間(jian)的(de)(de)配(pei)合度不好,在(zai)(zai)液(ye)壓(ya)(ya)(ya)(ya)系統中,減壓(ya)(ya)(ya)(ya)閥(fa)就無(wu)法(fa)起到減壓(ya)(ya)(ya)(ya)的(de)(de)作(zuo)用。