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擺動式液壓缸

擺動(dong)(dong)(dong)(dong)(dong)(dong)(dong)式(shi)(shi)液(ye)壓缸是輸(shu)出扭矩并實(shi)現(xian)(xian)(xian)往復(fu)運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)的執行元件，有單葉(xie)片(pian)(pian)(pian)、雙葉(xie)片(pian)(pian)(pian)、螺(luo)(luo)(luo)旋(xuan)(xuan)擺動(dong)(dong)(dong)(dong)(dong)(dong)(dong)等幾(ji)種形(xing)式(shi)(shi)。葉(xie)片(pian)(pian)(pian)式(shi)(shi)式(shi)(shi)：定子塊(kuai)固(gu)定在(zai)(zai)缸體(ti)上，而葉(xie)片(pian)(pian)(pian)和(he)轉(zhuan)子連接在(zai)(zai)一起。根(gen)據進油方向，葉(xie)片(pian)(pian)(pian)將(jiang)帶動(dong)(dong)(dong)(dong)(dong)(dong)(dong)轉(zhuan)子作往復(fu)擺動(dong)(dong)(dong)(dong)(dong)(dong)(dong)。螺(luo)(luo)(luo)旋(xuan)(xuan)擺動(dong)(dong)(dong)(dong)(dong)(dong)(dong)式(shi)(shi)又分單螺(luo)(luo)(luo)旋(xuan)(xuan)擺動(dong)(dong)(dong)(dong)(dong)(dong)(dong)和(he)雙螺(luo)(luo)(luo)旋(xuan)(xuan)兩種，現(xian)(xian)(xian)在(zai)(zai)雙螺(luo)(luo)(luo)旋(xuan)(xuan)比較常用，靠兩個螺(luo)(luo)(luo)旋(xuan)(xuan)副降液(ye)壓缸內活(huo)塞的直(zhi)線運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)轉(zhuan)變為直(zhi)線運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)與自轉(zhuan)運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)的復(fu)he運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)，從(cong)而實(shi)現(xian)(xian)(xian)擺動(dong)(dong)(dong)(dong)(dong)(dong)(dong)運(yun)(yun)(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)。

③ 從(cong)管路進入(ru)的異(yi)物，有多種情況。

a.清洗時(shi)不(bu)注意。管(guan)路安(an)裝好以后進行清洗時(shi)，不(bu)應通過缸(gang)體，必須在缸(gang)體的(de)油口(kou)前邊加裝旁(pang)通管(guan)路。這一點(dian)很重要。否則，管(guan)路中(zhong)的(de)異物將進入缸(gang)內(nei)，一旦(dan)進入，即難以向外排除(chu)，反(fan)而變成向缸(gang)體內(nei)輸(shu)送異物了(le)。再者，清洗時(shi)要考慮安(an)裝管(guan)路操作中(zhong)所進異物的(de)取出方(fang)法。此外，對(dui)管(guan)內(nei)的(de)腐(fu)蝕等在管(guan)路安(an)裝之前即應進行酸洗等手續，必須完(wan)全去掉銹(xiu)蝕。

現象(xiang)（一）：唇口破損

原因：

1.背壓損傷

防止措施：

1.在活塞頭(tou)靠經唇(chun)口側加開泄壓孔或者改用組合類雙作用密封

現象（二(er)）：焦燒

原因：

1.系(xi)統內有殘留空(kong)氣在運(yun)行時，空(kong)氣在密(mi)封處聚集壓(ya)縮升溫產生(sheng)密(mi)封焦燒(shao)碳化

防止措施：

1.在(zai)油缸起動之(zhi)前，盡量排盡油缸內空氣(qi)

2.油缸起動(dong)時，不要(yao)立即開(kai)到高速

3.當(dang)用U形圈時(shi)在其谷部加入潤滑脂，以防空(kong)氣積累

原因：

1.溫度太高

2.介質與橡膠材(cai)料不(bu)相適應

3.介質變質

 4.密(mi)封受潮或(huo)者在空(kong)氣中暴露時間過長(chang)超(chao)過庫存期限導致材料老化

防止措施：

1.降低溫度(du)，或者(zhe)更換耐高(gao)溫密封件(jian)材料

2.更改介(jie)質或更改耐介(jie)質的密(mi)封件材(cai)料

3.換新介質

4.不要將密封(feng)(feng)件長時間暴(bao)露在大氣中，嚴格按照(zhao)密封(feng)(feng)庫存(cun)要求對密封(feng)(feng)進行(xing)保存(cun)