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擺動式液壓缸

擺(bai)(bai)(bai)動(dong)(dong)(dong)式(shi)液壓(ya)缸(gang)(gang)是輸出扭(niu)矩并實現(xian)往復運(yun)動(dong)(dong)(dong)的執行(xing)元件，有單葉(xie)片、雙(shuang)葉(xie)片、螺(luo)(luo)(luo)旋(xuan)擺(bai)(bai)(bai)動(dong)(dong)(dong)等(deng)幾(ji)種(zhong)形(xing)式(shi)。葉(xie)片式(shi)式(shi)：定子(zi)塊固(gu)定在缸(gang)(gang)體上，而(er)葉(xie)片和(he)轉(zhuan)子(zi)連接在一起。根據(ju)進油方向，葉(xie)片將帶動(dong)(dong)(dong)轉(zhuan)子(zi)作往復擺(bai)(bai)(bai)動(dong)(dong)(dong)。螺(luo)(luo)(luo)旋(xuan)擺(bai)(bai)(bai)動(dong)(dong)(dong)式(shi)又分單螺(luo)(luo)(luo)旋(xuan)擺(bai)(bai)(bai)動(dong)(dong)(dong)和(he)雙(shuang)螺(luo)(luo)(luo)旋(xuan)兩(liang)種(zhong)，現(xian)在雙(shuang)螺(luo)(luo)(luo)旋(xuan)比較(jiao)常用，靠兩(liang)個螺(luo)(luo)(luo)旋(xuan)副降液壓(ya)缸(gang)(gang)內活塞的直線(xian)運(yun)動(dong)(dong)(dong)轉(zhuan)變為直線(xian)運(yun)動(dong)(dong)(dong)與自轉(zhuan)運(yun)動(dong)(dong)(dong)的復he運(yun)動(dong)(dong)(dong)，從(cong)而(er)實現(xian)擺(bai)(bai)(bai)動(dong)(dong)(dong)運(yun)動(dong)(dong)(dong)。

其次是裝(zhuang)配(pei)時有異物進(jin)入及密封材料(liao)質量(liang)不(bu)好。其后(hou)果則是動(dong)作(zuo)緩(huan)慢、無力，嚴重時還(huan)會造(zao)成活塞及缸筒(tong)的損(sun)壞，出現“拉缸”現象。處理(li)方法是調整速度控制閥，對照安裝(zhuang)說明(ming)應(ying)做(zuo)必要的操作(zuo)和改進(jin)。

(2)液(ye)壓回(hui)路(lu)泄漏。包括閥(fa)及液(ye)壓管(guan)路(lu)的泄漏。檢修方(fang)法是通過操縱(zong)換向閥(fa)檢查并消除液(ye)壓連(lian)接(jie)管(guan)路(lu)的泄漏。

(3)液壓油經溢流閥旁通(tong)回油箱。

液壓缸結構基本上可以分為缸筒和(he)缸蓋(gai)(gai)、活塞和(he)活塞桿(gan)、密封裝置(zhi)、緩沖裝置(zhi)和(he)排(pai)氣裝置(zhi)五個部分。今天威海力建(jian)小編(bian)著(zhu)(zhu)重帶著(zhu)(zhu)大(da)家了解一下缸筒和(he)缸蓋(gai)(gai)。

 缸筒和缸蓋(gai)

一般來說，缸(gang)(gang)(gang)(gang)筒(tong)(tong)和(he)(he)缸(gang)(gang)(gang)(gang)蓋(gai)的(de)(de)(de)結構(gou)形式(shi)和(he)(he)其使(shi)用(yong)(yong)的(de)(de)(de)材料有(you)關(guan)。工(gong)(gong)作壓(ya)力p＜10MPa時(shi)，使(shi)用(yong)(yong)鑄(zhu)(zhu)鐵；p＜20MPa時(shi)，使(shi)用(yong)(yong)無縫鋼管；p＞20MPa時(shi)，使(shi)用(yong)(yong)鑄(zhu)(zhu)鋼或鍛鋼。法蘭連(lian)接(jie)(jie)式(shi)，結構(gou)簡單(dan)，容易(yi)加(jia)(jia)工(gong)(gong)，也容易(yi)裝拆，但(dan)外形尺(chi)寸和(he)(he)重(zhong)(zhong)量(liang)都較大(da)，常(chang)用(yong)(yong)于(yu)鑄(zhu)(zhu)鐵制(zhi)的(de)(de)(de)缸(gang)(gang)(gang)(gang)筒(tong)(tong)上(shang)。半環連(lian)接(jie)(jie)式(shi)，它(ta)的(de)(de)(de)缸(gang)(gang)(gang)(gang)筒(tong)(tong)壁部因開了環形槽而削弱(ruo)了強度，為(wei)此有(you)時(shi)要(yao)加(jia)(jia)厚(hou)缸(gang)(gang)(gang)(gang)壁，它(ta)容易(yi)加(jia)(jia)工(gong)(gong)和(he)(he)裝拆，重(zhong)(zhong)量(liang)較輕，常(chang)用(yong)(yong)于(yu)無縫鋼管或鍛鋼制(zhi)的(de)(de)(de)缸(gang)(gang)(gang)(gang)筒(tong)(tong)上(shang)。螺紋(wen)連(lian)接(jie)(jie)式(shi)，它(ta)的(de)(de)(de)缸(gang)(gang)(gang)(gang)筒(tong)(tong)端部結構(gou)復雜，外徑加(jia)(jia)工(gong)(gong)時(shi)要(yao)求(qiu)保證(zheng)內外徑同(tong)心(xin)，裝拆要(yao)使(shi)用(yong)(yong)工(gong)(gong)具，它(ta)的(de)(de)(de)外形尺(chi)寸和(he)(he)重(zhong)(zhong)量(liang)都較小，常(chang)用(yong)(yong)于(yu)無縫鋼管或鑄(zhu)(zhu)鋼制(zhi)的(de)(de)(de)缸(gang)(gang)(gang)(gang)筒(tong)(tong)上(shang)。拉(la)桿連(lian)接(jie)(jie)式(shi)，結構(gou)的(de)(de)(de)通用(yong)(yong)性大(da)，容易(yi)加(jia)(jia)工(gong)(gong)和(he)(he)裝拆，但(dan)外形尺(chi)寸較大(da)，且(qie)較重(zhong)(zhong)。焊(han)接(jie)(jie)連(lian)接(jie)(jie)式(shi)，結構(gou)簡單(dan)，尺(chi)寸小，但(dan)缸(gang)(gang)(gang)(gang)底(di)處內徑不易(yi)加(jia)(jia)工(gong)(gong)，且(qie)可能引起變形。