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擺動式液壓缸

擺(bai)(bai)(bai)動(dong)(dong)(dong)(dong)(dong)式(shi)(shi)液(ye)壓(ya)缸是輸出(chu)扭矩(ju)并(bing)實現往(wang)復(fu)運(yun)動(dong)(dong)(dong)(dong)(dong)的(de)執行元件，有單(dan)葉(xie)片(pian)、雙(shuang)葉(xie)片(pian)、螺(luo)旋(xuan)擺(bai)(bai)(bai)動(dong)(dong)(dong)(dong)(dong)等(deng)幾種形式(shi)(shi)。葉(xie)片(pian)式(shi)(shi)式(shi)(shi)：定(ding)(ding)子(zi)(zi)塊固定(ding)(ding)在(zai)缸體上(shang)，而葉(xie)片(pian)和(he)轉(zhuan)(zhuan)子(zi)(zi)連接在(zai)一起。根據進油方(fang)向，葉(xie)片(pian)將帶動(dong)(dong)(dong)(dong)(dong)轉(zhuan)(zhuan)子(zi)(zi)作往(wang)復(fu)擺(bai)(bai)(bai)動(dong)(dong)(dong)(dong)(dong)。螺(luo)旋(xuan)擺(bai)(bai)(bai)動(dong)(dong)(dong)(dong)(dong)式(shi)(shi)又分單(dan)螺(luo)旋(xuan)擺(bai)(bai)(bai)動(dong)(dong)(dong)(dong)(dong)和(he)雙(shuang)螺(luo)旋(xuan)兩種，現在(zai)雙(shuang)螺(luo)旋(xuan)比(bi)較常用，靠(kao)兩個螺(luo)旋(xuan)副降液(ye)壓(ya)缸內(nei)活塞(sai)的(de)直線運(yun)動(dong)(dong)(dong)(dong)(dong)轉(zhuan)(zhuan)變為直線運(yun)動(dong)(dong)(dong)(dong)(dong)與(yu)自轉(zhuan)(zhuan)運(yun)動(dong)(dong)(dong)(dong)(dong)的(de)復(fu)he運(yun)動(dong)(dong)(dong)(dong)(dong)，從而實現擺(bai)(bai)(bai)動(dong)(dong)(dong)(dong)(dong)運(yun)動(dong)(dong)(dong)(dong)(dong)。

緩沖裝置

在(zai)液(ye)(ye)壓(ya)(ya)系統中使用液(ye)(ye)壓(ya)(ya)缸(gang)驅動具(ju)有(you)一定質(zhi)量的機構，當液(ye)(ye)壓(ya)(ya)缸(gang)運(yun)動至行程終(zhong)點時具(ju)有(you)較大動能，如未作減速處理，液(ye)(ye)壓(ya)(ya)缸(gang)活塞與缸(gang)蓋將發(fa)(fa)生(sheng)機械碰撞，產(chan)生(sheng)沖擊、噪(zao)聲，有(you)破壞性。為(wei)緩和及(ji)防(fang)止這種(zhong)危(wei)害發(fa)(fa)生(sheng)，因(yin)此(ci)可在(zai)液(ye)(ye)壓(ya)(ya)回(hui)路(lu)中設置(zhi)(zhi)減速裝(zhuang)(zhuang)置(zhi)(zhi)或在(zai)缸(gang)體內設緩沖裝(zhuang)(zhuang)置(zhi)(zhi)。

加工

缸(gang)(gang)筒(tong)作為(wei)液(ye)壓(ya)缸(gang)(gang)、礦用單體支柱、液(ye)壓(ya)支架、炮管(guan)等產(chan)品的(de)主要部件(jian)，其加(jia)工(gong)(gong)質量(liang)的(de)好壞直(zhi)接(jie)影響整個產(chan)品的(de)壽命和可靠性。缸(gang)(gang)筒(tong)加(jia)工(gong)(gong)要求高，其內表面粗(cu)糙度(du)要求為(wei)Ra0.4～0.8&um，對同軸度(du)、耐磨性要求嚴(yan)格。缸(gang)(gang)筒(tong)的(de)基本特征是(shi)深(shen)孔加(jia)工(gong)(gong)，其加(jia)工(gong)(gong)一(yi)直(zhi)困擾(rao)加(jia)工(gong)(gong)人員(yuan)。

例如：活塞(sai)與活塞(sai)桿(gan)(gan)不同心或(huo)活塞(sai)桿(gan)(gan)彎曲，液壓缸或(huo)活塞(sai)桿(gan)(gan)對導軌安裝(zhuang)位置偏移，密封環裝(zhuang)得過緊(jin)或(huo)過松等。解決方法是重新(xin)修理或(huo)調(diao)整，更換(huan)損(sun)傷的(de)零(ling)件及清除鐵屑。

(2)潤滑不良或(huo)液(ye)(ye)壓(ya)缸孔(kong)徑(jing)(jing)加(jia)工超差(cha)(cha)。因為活塞(sai)與缸筒、導軌與活塞(sai)桿等均(jun)有相(xiang)對(dui)運動，如果潤滑不良或(huo)液(ye)(ye)壓(ya)缸孔(kong)徑(jing)(jing)超差(cha)(cha)，就(jiu)會加(jia)劇(ju)磨損，使缸筒中心線直(zhi)線性降低。（威海力建冶(ye)金液(ye)(ye)壓(ya)設備廠)