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擺動式液壓缸

擺(bai)(bai)動(dong)(dong)(dong)(dong)(dong)(dong)式(shi)(shi)液壓缸是輸出(chu)扭矩并(bing)實現往(wang)復(fu)(fu)運(yun)動(dong)(dong)(dong)(dong)(dong)(dong)的(de)執行元件，有單葉(xie)片(pian)(pian)、雙葉(xie)片(pian)(pian)、螺(luo)旋(xuan)(xuan)擺(bai)(bai)動(dong)(dong)(dong)(dong)(dong)(dong)等幾種(zhong)形式(shi)(shi)。葉(xie)片(pian)(pian)式(shi)(shi)式(shi)(shi)：定子(zi)塊(kuai)固定在(zai)缸體上，而(er)(er)葉(xie)片(pian)(pian)和(he)轉子(zi)連(lian)接(jie)在(zai)一起。根據進油方向(xiang)，葉(xie)片(pian)(pian)將帶動(dong)(dong)(dong)(dong)(dong)(dong)轉子(zi)作(zuo)往(wang)復(fu)(fu)擺(bai)(bai)動(dong)(dong)(dong)(dong)(dong)(dong)。螺(luo)旋(xuan)(xuan)擺(bai)(bai)動(dong)(dong)(dong)(dong)(dong)(dong)式(shi)(shi)又分單螺(luo)旋(xuan)(xuan)擺(bai)(bai)動(dong)(dong)(dong)(dong)(dong)(dong)和(he)雙螺(luo)旋(xuan)(xuan)兩種(zhong)，現在(zai)雙螺(luo)旋(xuan)(xuan)比較常用，靠兩個螺(luo)旋(xuan)(xuan)副降液壓缸內活塞的(de)直(zhi)線(xian)運(yun)動(dong)(dong)(dong)(dong)(dong)(dong)轉變為(wei)直(zhi)線(xian)運(yun)動(dong)(dong)(dong)(dong)(dong)(dong)與自轉運(yun)動(dong)(dong)(dong)(dong)(dong)(dong)的(de)復(fu)(fu)he運(yun)動(dong)(dong)(dong)(dong)(dong)(dong)，從(cong)而(er)(er)實現擺(bai)(bai)動(dong)(dong)(dong)(dong)(dong)(dong)運(yun)動(dong)(dong)(dong)(dong)(dong)(dong)。

(3)液壓(ya)系統(tong)控(kong)制(zhi)壓(ya)力(li)(li)太低。控(kong)制(zhi)管路中節流(liu)阻力(li)(li)可能過大，流(liu)量閥調節不當，控(kong)制(zhi)壓(ya)力(li)(li)不合適，壓(ya)力(li)(li)源受到干擾。此時應(ying)檢(jian)查控(kong)制(zhi)壓(ya)力(li)(li)源，保證壓(ya)力(li)(li)調節到系統(tong)的(de)規定值。

(4)液(ye)(ye)壓(ya)系統(tong)(tong)中進入空氣。主要是(shi)因為系統(tong)(tong)中有(you)泄漏(lou)發生。此時應(ying)檢查液(ye)(ye)壓(ya)油(you)箱的(de)液(ye)(ye)位(wei)，液(ye)(ye)壓(ya)泵吸油(you)側(ce)的(de)密(mi)封件和管(guan)接頭(tou)，吸油(you)粗濾器是(shi)否太臟。若如(ru)此，應(ying)補充液(ye)(ye)壓(ya)油(you)，處理密(mi)封及管(guan)接頭(tou)，清洗或更換粗濾芯。

現(xian)象（一）：串(chuan)漏

原因：

1.壓力迅(xun)速上升(sheng)或(huo)者缸(gang)壁膨(peng)脹(zhang)，油液(ye)進入間隙(xi)，壓力形(xing)成對密封的下(xia)行作用，串漏形(xing)成

2.密封環未(wei)設計泄壓槽(cao)

防止措施：

1.密封環設計留有泄壓(ya)槽(cao)，油液通過泄壓(ya)槽(cao)，填充溝槽(cao)從而壓(ya)縮O形圈，產生密封

原因：

1.運(yun)動速度太快

2.有偏心運動(dong)

3.滑動面粗糙度(du)不均勻

4.安裝(zhuang)時扭轉

防止措施：

1.改用唇形密封

2.消除(chu)偏心(xin)運動

3.修改滑動(dong)面粗糙度(du)

4.注意安裝

原因：

1.溝槽(cao)設計不合理導致(zhi)壓縮率太(tai)大：沒(mei)有考慮到材料由(you)于熱量及化學介質引(yin)起(qi)的變(bian)形，或由(you)于壓力過(guo)大引(yin)起(qi)

防止措施：

1.溝(gou)槽的設計應考慮到材(cai)料由于溫度及化(hua)學介(jie)質引(yin)起的變形