
威海力建液壓(ya)設備廠
經營(ying)模式:生產(chan)加工(gong)
地(di)址:山(shan)東省威海市羊(yang)亭孫(sun)家(jia)灘(tan)工業園
主營(ying):液(ye)壓(ya)(ya)缸,油缸,液(ye)壓(ya)(ya)系(xi)統
業務熱線:
QQ:3049278720
伸縮式液壓缸
伸縮式液壓(ya)(ya)缸(gang)具有二級或多(duo)級活塞,伸縮式液壓(ya)(ya)缸(gang)中活塞伸出(chu)的順(shun)序式從(cong)大(da)到小(xiao),而(er)空載縮回的順(shun)序則一般是(shi)從(cong)小(xiao)到大(da)。伸縮缸(gang)可(ke)實(shi)現較(jiao)長(chang)的行程(cheng),而(er)縮回時(shi)長(chang)度(du)較(jiao)短,結構較(jiao)為緊湊(cou)。此種液壓(ya)(ya)缸(gang)常(chang)用于工程(cheng)機械和(he)農業機械上(shang)。有多(duo)個一次運動的活塞,各活塞逐次運動時(shi),其(qi)輸出(chu)速度(du)和(he)輸出(chu)力均是(shi)變化的。(威海力建(jian)冶金液壓(ya)(ya)設(she)備(bei)廠)





(3)液壓(ya)(ya)系統(tong)控(kong)(kong)制(zhi)(zhi)壓(ya)(ya)力(li)(li)太低。控(kong)(kong)制(zhi)(zhi)管(guan)路(lu)中節流阻力(li)(li)可能過大,流量閥調(diao)節不當,控(kong)(kong)制(zhi)(zhi)壓(ya)(ya)力(li)(li)不合(he)適,壓(ya)(ya)力(li)(li)源(yuan)受到(dao)干擾(rao)。此時應檢查控(kong)(kong)制(zhi)(zhi)壓(ya)(ya)力(li)(li)源(yuan),保證壓(ya)(ya)力(li)(li)調(diao)節到(dao)系統(tong)的規定值。
(4)液(ye)壓(ya)系(xi)統中進入空氣。主(zhu)要是因為系(xi)統中有泄漏發生。此(ci)(ci)時應(ying)檢(jian)查液(ye)壓(ya)油箱(xiang)的(de)液(ye)位(wei),液(ye)壓(ya)泵吸油側的(de)密封(feng)件和管接頭,吸油粗濾器(qi)是否太臟。若(ruo)如此(ci)(ci),應(ying)補充液(ye)壓(ya)油,處理密封(feng)及(ji)管接頭,清洗或更換粗濾芯。
零部(bu)件加(jia)(jia)工(gong)(gong)精度(du)的影響(xiang)問(wen)題,在(zai)液壓(ya)(ya)缸(gang)的制造過程中(zhong)應嚴格控制缸(gang)體(ti)內壁(bi)和活(huo)塞桿表(biao)面加(jia)(jia)工(gong)(gong)精度(du),特(te)別是(shi)幾何(he)精度(du),尤(you)其直(zhi)(zhi)線(xian)度(du)是(shi)關(guan)鍵(jian),在(zai)國(guo)內加(jia)(jia)工(gong)(gong)工(gong)(gong)藝中(zhong),活(huo)塞桿表(biao)面的加(jia)(jia)工(gong)(gong)基(ji)本上(shang)是(shi)車后磨(mo)削,保證(zheng)直(zhi)(zhi)線(xian)度(du)問(wen)題不大(da),但對于(yu)缸(gang)體(ti)內壁(bi)的加(jia)(jia)工(gong)(gong),其加(jia)(jia)工(gong)(gong)方法(fa)很多(duo),有鏜(tang)削-滾(gun)壓(ya)(ya)、鏜(tang)削-珩(heng)(heng)磨(mo)、直(zhi)(zhi)接珩(heng)(heng)磨(mo)等(deng),但由于(yu)國(guo)內材料的基(ji)礎水平較國(guo)外有差距,管(guan)材坯(pi)料直(zhi)(zhi)線(xian)度(du)差,壁(bi)厚不均(jun)勻、硬度(du)不均(jun)勻等(deng)因素,往往直(zhi)(zhi)接影響(xiang)缸(gang)體(ti)內壁(bi)加(jia)(jia)工(gong)(gong)后的直(zhi)(zhi)線(xian)度(du),因此建議采用鏜(tang)削-滾(gun)壓(ya)(ya)、鏜(tang)削-珩(heng)(heng)磨(mo)工(gong)(gong)藝,如直(zhi)(zhi)接珩(heng)(heng)磨(mo),則必須首先提高管(guan)材坯(pi)料的直(zhi)(zhi)線(xian)度(du)。
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在允許的情況下(xia),液(ye)壓(ya)缸(gang)(gang)的缸(gang)(gang)體(ti)(ti)(ti)(ti)壁(bi)厚(hou)安全系數盡量選大一些,使(shi)缸(gang)(gang)體(ti)(ti)(ti)(ti)厚(hou)壁(bi)增(zeng)加,特別是(shi)高壓(ya)工況下(xia)使(shi)用的油(you)缸(gang)(gang),以減小油(you)壓(ya)下(xia)的缸(gang)(gang)體(ti)(ti)(ti)(ti)變形(xing),變形(xing)后的缸(gang)(gang)體(ti)(ti)(ti)(ti)也會引(yin)起液(ye)壓(ya)缸(gang)(gang)低速爬行。