
威海力建液壓設(she)備(bei)廠
經營模式:生(sheng)產加工
地址:山東(dong)省威海市(shi)羊亭孫家灘工業(ye)園
主(zhu)營:液壓缸(gang),油缸(gang),液壓系統
業務熱線(xian):
QQ:3049278720
.對靜密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)件的要求。靜密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)件在剛(gang)性固(gu)定(ding)表面之間(jian)防止油液外泄。合理設計密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)槽尺寸及公差,使安(an)裝后的密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)件到一(yi)定(ding)擠壓產生變形以便(bian)填塞配合表面的微(wei)觀(guan)凹陷,并把(ba)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)件內應力(li)提高到高于被密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)的壓力(li)。隨著配合表面的運動(dong),靜密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)就(jiu)成了動(dong)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)。粗糙的配合表面將磨(mo)損密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)件,變動(dong)的間(jian)隙將蠶(can)食密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)件邊緣。
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.合理設(she)計安裝(zhuang)(zhuang)板。當閥組或(huo)底板用螺(luo)栓固定在安裝(zhuang)(zhuang)面(mian)(mian)(mian)上時(shi),為了(le)得(de)到滿意的初(chu)始密封和(he)防止密封件被(bei)擠出溝槽和(he)被(bei)磨損,安裝(zhuang)(zhuang)面(mian)(mian)(mian)要平(ping)直,密封面(mian)(mian)(mian)要求(qiu)精加工,表(biao)(biao)面(mian)(mian)(mian)粗糙度要達到0.8μm,平(ping)面(mian)(mian)(mian)度要達到0.01/100mm。表(biao)(biao)面(mian)(mian)(mian)不(bu)能有(you)徑向劃痕,連(lian)接螺(luo)釘的預緊力要足夠大,以防止表(biao)(biao)面(mian)(mian)(mian)分離。





液壓系(xi)統(tong)(tong)常(chang)用回(hui)(hui)路(lu)(lu),現(xian)代設備的(de)液壓系(xi)統(tong)(tong),不論其(qi)復雜(za)程(cheng)度如何,總是由一(yi)些(xie)(xie)能(neng)完成一(yi)定功能(neng)的(de)常(chang)用基(ji)本回(hui)(hui)路(lu)(lu)組成。理解(jie)和熟悉(xi)這(zhe)些(xie)(xie)常(chang)用的(de)基(ji)本回(hui)(hui)路(lu)(lu),對(dui)于正確分(fen)析(xi)各種回(hui)(hui)路(lu)(lu)的(de)工作原理,掌握回(hui)(hui)路(lu)(lu)的(de)功能(neng),順利閱讀液壓系(xi)統(tong)(tong)圖(tu)和設計液壓系(xi)統(tong)(tong)是十分(fen)重要(yao)的(de)
用(yong)流量閥(fa)和(he)定量液壓泵(beng)組成(cheng)的(de)節(jie)流調速回路雖然調節(jie)起來非常方便,但是用(yong)節(jie)流閥(fa)進行調速存在著速度隨負載變化的(de)問題,同時(shi)油(you)液正在通過流量閥(fa)時(shi)所造成(cheng)的(de)功(gong)率損失大,回路效率大。
容積(ji)調速回路包括(kuo)變(bian)量(liang)(liang)(liang)泵(beng)(beng)與(yu)定(ding)量(liang)(liang)(liang)執行元件(jian)(液(ye)壓(ya)(ya)缸或液(ye)壓(ya)(ya)馬(ma)達(da))定(ding)量(liang)(liang)(liang)泵(beng)(beng)與(yu)變(bian)量(liang)(liang)(liang)液(ye)壓(ya)(ya)馬(ma)達(da)以及(ji)變(bian)量(liang)(liang)(liang)泵(beng)(beng)與(yu)變(bian)量(liang)(liang)(liang)液(ye)壓(ya)(ya)馬(ma)達(da)三種不同的(de)組 合。
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液(ye)壓(ya)(ya)閥(fa)在(zai)液(ye)壓(ya)(ya)系(xi)(xi)統(tong)中(zhong)的(de)(de)工(gong)(gong)(gong)作(zuo)(zuo)方式(shi)是閥(fa)體和閥(fa)芯(xin)相(xiang)對運動(dong),這種工(gong)(gong)(gong)作(zuo)(zuo)方式(shi)不(bu)(bu)可避免的(de)(de)就(jiu)(jiu)是磨損。液(ye)壓(ya)(ya)閥(fa)的(de)(de)閥(fa)體和閥(fa)芯(xin)進行相(xiang)對運動(dong)的(de)(de)過(guo)程中(zhong),會不(bu)(bu)斷(duan)的(de)(de)摩擦,在(zai)工(gong)(gong)(gong)作(zuo)(zuo)一段時間后,液(ye)壓(ya)(ya)閥(fa)各元件(jian)之間的(de)(de)尺寸、形狀、質量等(deng)發生(sheng)變(bian)化(hua),不(bu)(bu)再是液(ye)壓(ya)(ya)閥(fa)原有的(de)(de)特性,在(zai)液(ye)壓(ya)(ya)閥(fa)工(gong)(gong)(gong)作(zuo)(zuo)中(zhong)就(jiu)(jiu)會失效,出(chu)現故障。例如,在(zai)液(ye)壓(ya)(ya)系(xi)(xi)統(tong)中(zhong)的(de)(de)減壓(ya)(ya)閥(fa)工(gong)(gong)(gong)作(zuo)(zuo)中(zhong),錐閥(fa)和閥(fa)座之間因(yin)為長時間的(de)(de)摩擦、磨損,造成零件(jian)之間的(de)(de)配合度(du)不(bu)(bu)好(hao),在(zai)液(ye)壓(ya)(ya)系(xi)(xi)統(tong)中(zhong),減壓(ya)(ya)閥(fa)就(jiu)(jiu)無(wu)法起到減壓(ya)(ya)的(de)(de)作(zuo)(zuo)用(yong)。