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伸縮式液壓缸

伸縮式液壓(ya)(ya)缸(gang)具有二級或多級活(huo)(huo)塞，伸縮式液壓(ya)(ya)缸(gang)中活(huo)(huo)塞伸出的(de)(de)順序(xu)式從大(da)到(dao)小，而空(kong)載(zai)縮回(hui)的(de)(de)順序(xu)則一般(ban)是從小到(dao)大(da)。伸縮缸(gang)可實(shi)現較長的(de)(de)行程，而縮回(hui)時長度較短，結構較為緊湊。此種(zhong)液壓(ya)(ya)缸(gang)常用于工程機械和農業(ye)機械上。有多個一次運動(dong)的(de)(de)活(huo)(huo)塞，各活(huo)(huo)塞逐(zhu)次運動(dong)時，其輸出速度和輸出力(li)均是變化的(de)(de)。(威海力(li)建冶金液壓(ya)(ya)設備廠)

液壓缸(gang)結構(gou)基本上可以分(fen)為缸(gang)筒和缸(gang)蓋(gai)、活塞和活塞桿、密封裝置(zhi)(zhi)、緩沖(chong)裝置(zhi)(zhi)和排(pai)氣裝置(zhi)(zhi)五個部分(fen)。今天威海力建小(xiao)編著(zhu)重帶著(zhu)大家(jia)了解(jie)一下缸(gang)筒和缸(gang)蓋(gai)。

 缸筒和缸蓋

一般(ban)來(lai)說(shuo)，缸(gang)筒(tong)(tong)(tong)和缸(gang)蓋(gai)的結(jie)構(gou)(gou)(gou)形式和其使(shi)用(yong)(yong)的材(cai)料有關。工(gong)(gong)(gong)(gong)作壓力p＜10MPa時(shi)，使(shi)用(yong)(yong)鑄(zhu)鐵；p＜20MPa時(shi)，使(shi)用(yong)(yong)無縫(feng)鋼管；p＞20MPa時(shi)，使(shi)用(yong)(yong)鑄(zhu)鋼或鍛鋼。法蘭連(lian)接式，結(jie)構(gou)(gou)(gou)簡單(dan)，容(rong)(rong)易(yi)(yi)加(jia)(jia)工(gong)(gong)(gong)(gong)，也容(rong)(rong)易(yi)(yi)裝(zhuang)拆，但外(wai)(wai)(wai)形尺(chi)寸(cun)和重(zhong)量(liang)都(dou)較(jiao)(jiao)大(da)，常(chang)用(yong)(yong)于鑄(zhu)鐵制的缸(gang)筒(tong)(tong)(tong)上(shang)。半(ban)環(huan)連(lian)接式，它的缸(gang)筒(tong)(tong)(tong)壁(bi)部因開了環(huan)形槽而(er)削弱了強(qiang)度，為此有時(shi)要加(jia)(jia)厚(hou)缸(gang)壁(bi)，它容(rong)(rong)易(yi)(yi)加(jia)(jia)工(gong)(gong)(gong)(gong)和裝(zhuang)拆，重(zhong)量(liang)較(jiao)(jiao)輕，常(chang)用(yong)(yong)于無縫(feng)鋼管或鍛鋼制的缸(gang)筒(tong)(tong)(tong)上(shang)。螺紋連(lian)接式，它的缸(gang)筒(tong)(tong)(tong)端部結(jie)構(gou)(gou)(gou)復雜，外(wai)(wai)(wai)徑加(jia)(jia)工(gong)(gong)(gong)(gong)時(shi)要求(qiu)保證內外(wai)(wai)(wai)徑同心(xin)，裝(zhuang)拆要使(shi)用(yong)(yong)工(gong)(gong)(gong)(gong)具，它的外(wai)(wai)(wai)形尺(chi)寸(cun)和重(zhong)量(liang)都(dou)較(jiao)(jiao)小，常(chang)用(yong)(yong)于無縫(feng)鋼管或鑄(zhu)鋼制的缸(gang)筒(tong)(tong)(tong)上(shang)。拉桿連(lian)接式，結(jie)構(gou)(gou)(gou)的通(tong)用(yong)(yong)性大(da)，容(rong)(rong)易(yi)(yi)加(jia)(jia)工(gong)(gong)(gong)(gong)和裝(zhuang)拆，但外(wai)(wai)(wai)形尺(chi)寸(cun)較(jiao)(jiao)大(da)，且較(jiao)(jiao)重(zhong)。焊接連(lian)接式，結(jie)構(gou)(gou)(gou)簡單(dan)，尺(chi)寸(cun)小，但缸(gang)底處內徑不易(yi)(yi)加(jia)(jia)工(gong)(gong)(gong)(gong)，且可能引起(qi)變形。

3、叉車叉架(jia)下降(jiang)速度太快

故障檢查：節流閥(fa)卡(ka)在打(da)開位置或(huo)裝反

故障排(pai)除：重裝(zhuang)節流(liu)閥(fa)

4、叉車起升缸(gang)自由(you)下滑量(liang)太(tai)大或(huo)傾斜缸(gang)自傾角太(tai)大

故障檢查：換向閥閥桿內泄漏太大，傾斜缸活(huo)塞密封圈(quan)失(shi)效內漏

故障(zhang)排除(chu)：更(geng)換閥桿或更(geng)換密封圈(quan)

5、液壓缸活塞桿(gan)帶油

故(gu)障檢(jian)查：油封是(shi)否損壞

故障排(pai)除：更換油封（威海力建冶金液壓設備(bei)廠(chang)推薦）