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伸縮式液壓缸

伸縮式液(ye)壓(ya)(ya)(ya)缸具(ju)有二(er)級(ji)(ji)或多(duo)級(ji)(ji)活塞，伸縮式液(ye)壓(ya)(ya)(ya)缸中活塞伸出(chu)的(de)順序式從大(da)到(dao)小，而(er)空載縮回的(de)順序則一般是從小到(dao)大(da)。伸縮缸可實現較長的(de)行(xing)程，而(er)縮回時長度較短，結構(gou)較為緊湊。此種液(ye)壓(ya)(ya)(ya)缸常用于(yu)工(gong)程機械和(he)農業機械上。有多(duo)個一次運(yun)動(dong)的(de)活塞，各活塞逐次運(yun)動(dong)時，其輸出(chu)速(su)度和(he)輸出(chu)力(li)均是變化(hua)的(de)。(威海力(li)建冶金液(ye)壓(ya)(ya)(ya)設備廠)

液壓缸(gang)結構基本上可以(yi)分為(wei)缸(gang)筒和(he)缸(gang)蓋、活塞和(he)活塞桿、密封(feng)裝置、緩(huan)沖(chong)裝置和(he)排氣裝置五(wu)個部分。今(jin)天威海力建(jian)小編著(zhu)重帶著(zhu)大(da)家了解一下缸(gang)筒和(he)缸(gang)蓋。

 缸(gang)筒和缸(gang)蓋

一般來說，缸(gang)(gang)筒(tong)和(he)缸(gang)(gang)蓋的(de)結構形(xing)(xing)(xing)式(shi)(shi)(shi)和(he)其使(shi)用(yong)(yong)(yong)的(de)材料有(you)關。工(gong)作壓力(li)p＜10MPa時(shi)(shi)，使(shi)用(yong)(yong)(yong)鑄(zhu)鐵(tie)；p＜20MPa時(shi)(shi)，使(shi)用(yong)(yong)(yong)無縫(feng)鋼(gang)(gang)管；p＞20MPa時(shi)(shi)，使(shi)用(yong)(yong)(yong)鑄(zhu)鋼(gang)(gang)或鍛鋼(gang)(gang)。法蘭連(lian)(lian)接(jie)(jie)式(shi)(shi)(shi)，結構簡單(dan)，容(rong)易(yi)(yi)加(jia)(jia)工(gong)，也容(rong)易(yi)(yi)裝拆(chai)，但(dan)(dan)外(wai)(wai)形(xing)(xing)(xing)尺(chi)寸和(he)重量(liang)都較(jiao)(jiao)大，常用(yong)(yong)(yong)于(yu)鑄(zhu)鐵(tie)制(zhi)(zhi)的(de)缸(gang)(gang)筒(tong)上。半(ban)環(huan)連(lian)(lian)接(jie)(jie)式(shi)(shi)(shi)，它(ta)(ta)的(de)缸(gang)(gang)筒(tong)壁(bi)部(bu)因開了環(huan)形(xing)(xing)(xing)槽而(er)削弱了強度，為此(ci)有(you)時(shi)(shi)要加(jia)(jia)厚缸(gang)(gang)壁(bi)，它(ta)(ta)容(rong)易(yi)(yi)加(jia)(jia)工(gong)和(he)裝拆(chai)，重量(liang)較(jiao)(jiao)輕，常用(yong)(yong)(yong)于(yu)無縫(feng)鋼(gang)(gang)管或鍛鋼(gang)(gang)制(zhi)(zhi)的(de)缸(gang)(gang)筒(tong)上。螺紋連(lian)(lian)接(jie)(jie)式(shi)(shi)(shi)，它(ta)(ta)的(de)缸(gang)(gang)筒(tong)端部(bu)結構復雜，外(wai)(wai)徑加(jia)(jia)工(gong)時(shi)(shi)要求保證內外(wai)(wai)徑同心，裝拆(chai)要使(shi)用(yong)(yong)(yong)工(gong)具(ju)，它(ta)(ta)的(de)外(wai)(wai)形(xing)(xing)(xing)尺(chi)寸和(he)重量(liang)都較(jiao)(jiao)小(xiao)，常用(yong)(yong)(yong)于(yu)無縫(feng)鋼(gang)(gang)管或鑄(zhu)鋼(gang)(gang)制(zhi)(zhi)的(de)缸(gang)(gang)筒(tong)上。拉桿連(lian)(lian)接(jie)(jie)式(shi)(shi)(shi)，結構的(de)通用(yong)(yong)(yong)性大，容(rong)易(yi)(yi)加(jia)(jia)工(gong)和(he)裝拆(chai)，但(dan)(dan)外(wai)(wai)形(xing)(xing)(xing)尺(chi)寸較(jiao)(jiao)大，且較(jiao)(jiao)重。焊(han)接(jie)(jie)連(lian)(lian)接(jie)(jie)式(shi)(shi)(shi)，結構簡單(dan)，尺(chi)寸小(xiao)，但(dan)(dan)缸(gang)(gang)底處內徑不易(yi)(yi)加(jia)(jia)工(gong)，且可能引起變(bian)形(xing)(xing)(xing)。

3、叉(cha)車叉(cha)架下降速度(du)太快

故障檢查：節流閥卡在打開位置或裝反

故障排除：重裝節流(liu)閥

4、叉車(che)起升缸自(zi)由(you)下滑量太大或傾斜缸自(zi)傾角(jiao)太大

故障(zhang)檢查(cha)：換向閥(fa)閥(fa)桿內(nei)泄漏太(tai)大，傾斜缸活塞(sai)密封圈失效內(nei)漏

故障排除：更換(huan)閥桿或更換(huan)密封圈

5、液(ye)壓缸活塞桿(gan)帶油

故障檢查：油(you)封是否損(sun)壞(huai)

故障(zhang)排除(chu)：更換油封（威海(hai)力建冶金液壓設(she)備(bei)廠推薦）