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伸縮式液壓缸

伸縮(suo)(suo)式液(ye)壓(ya)缸具有二級(ji)或多(duo)級(ji)活(huo)(huo)塞(sai)，伸縮(suo)(suo)式液(ye)壓(ya)缸中活(huo)(huo)塞(sai)伸出的順(shun)(shun)序式從大到小(xiao)，而(er)空(kong)載縮(suo)(suo)回(hui)的順(shun)(shun)序則一般是(shi)從小(xiao)到大。伸縮(suo)(suo)缸可實(shi)現較(jiao)長的行程，而(er)縮(suo)(suo)回(hui)時(shi)長度較(jiao)短，結構較(jiao)為緊(jin)湊。此種液(ye)壓(ya)缸常用于工程機械和(he)農業機械上。有多(duo)個(ge)一次運(yun)(yun)動(dong)的活(huo)(huo)塞(sai)，各活(huo)(huo)塞(sai)逐次運(yun)(yun)動(dong)時(shi)，其輸(shu)出速度和(he)輸(shu)出力均(jun)是(shi)變化的。(威(wei)海力建冶(ye)金液(ye)壓(ya)設備廠(chang))

液壓(ya)缸(gang)結構基(ji)本上可以分為(wei)缸(gang)筒和(he)缸(gang)蓋、活(huo)塞和(he)活(huo)塞桿(gan)、密封裝(zhuang)(zhuang)置(zhi)、緩(huan)沖裝(zhuang)(zhuang)置(zhi)和(he)排氣裝(zhuang)(zhuang)置(zhi)五個部分。今天威海力建(jian)小(xiao)編(bian)著(zhu)重帶著(zhu)大家了(le)解一下缸(gang)筒和(he)缸(gang)蓋。

 缸(gang)筒和缸(gang)蓋(gai)

一般(ban)來說，缸(gang)(gang)(gang)筒(tong)(tong)(tong)和(he)(he)缸(gang)(gang)(gang)蓋的(de)(de)(de)(de)結構(gou)(gou)形(xing)式(shi)和(he)(he)其使(shi)用(yong)(yong)(yong)(yong)(yong)的(de)(de)(de)(de)材料有關。工(gong)(gong)作壓力p＜10MPa時(shi)，使(shi)用(yong)(yong)(yong)(yong)(yong)鑄(zhu)鐵(tie)；p＜20MPa時(shi)，使(shi)用(yong)(yong)(yong)(yong)(yong)無(wu)縫(feng)(feng)鋼管(guan)；p＞20MPa時(shi)，使(shi)用(yong)(yong)(yong)(yong)(yong)鑄(zhu)鋼或(huo)鍛(duan)鋼。法(fa)蘭連(lian)(lian)接(jie)(jie)式(shi)，結構(gou)(gou)簡單(dan)，容(rong)(rong)易加(jia)工(gong)(gong)，也容(rong)(rong)易裝(zhuang)(zhuang)拆(chai)，但外形(xing)尺寸(cun)(cun)和(he)(he)重(zhong)(zhong)量都較(jiao)大(da)，常(chang)用(yong)(yong)(yong)(yong)(yong)于(yu)鑄(zhu)鐵(tie)制的(de)(de)(de)(de)缸(gang)(gang)(gang)筒(tong)(tong)(tong)上(shang)。半(ban)環連(lian)(lian)接(jie)(jie)式(shi)，它的(de)(de)(de)(de)缸(gang)(gang)(gang)筒(tong)(tong)(tong)壁部因開了(le)環形(xing)槽而(er)削弱了(le)強度，為(wei)此(ci)有時(shi)要加(jia)厚缸(gang)(gang)(gang)壁，它容(rong)(rong)易加(jia)工(gong)(gong)和(he)(he)裝(zhuang)(zhuang)拆(chai)，重(zhong)(zhong)量較(jiao)輕，常(chang)用(yong)(yong)(yong)(yong)(yong)于(yu)無(wu)縫(feng)(feng)鋼管(guan)或(huo)鍛(duan)鋼制的(de)(de)(de)(de)缸(gang)(gang)(gang)筒(tong)(tong)(tong)上(shang)。螺紋(wen)連(lian)(lian)接(jie)(jie)式(shi)，它的(de)(de)(de)(de)缸(gang)(gang)(gang)筒(tong)(tong)(tong)端部結構(gou)(gou)復雜，外徑加(jia)工(gong)(gong)時(shi)要求保證內外徑同心，裝(zhuang)(zhuang)拆(chai)要使(shi)用(yong)(yong)(yong)(yong)(yong)工(gong)(gong)具，它的(de)(de)(de)(de)外形(xing)尺寸(cun)(cun)和(he)(he)重(zhong)(zhong)量都較(jiao)小(xiao)，常(chang)用(yong)(yong)(yong)(yong)(yong)于(yu)無(wu)縫(feng)(feng)鋼管(guan)或(huo)鑄(zhu)鋼制的(de)(de)(de)(de)缸(gang)(gang)(gang)筒(tong)(tong)(tong)上(shang)。拉桿連(lian)(lian)接(jie)(jie)式(shi)，結構(gou)(gou)的(de)(de)(de)(de)通用(yong)(yong)(yong)(yong)(yong)性(xing)大(da)，容(rong)(rong)易加(jia)工(gong)(gong)和(he)(he)裝(zhuang)(zhuang)拆(chai)，但外形(xing)尺寸(cun)(cun)較(jiao)大(da)，且較(jiao)重(zhong)(zhong)。焊接(jie)(jie)連(lian)(lian)接(jie)(jie)式(shi)，結構(gou)(gou)簡單(dan)，尺寸(cun)(cun)小(xiao)，但缸(gang)(gang)(gang)底處內徑不易加(jia)工(gong)(gong)，且可能引起(qi)變形(xing)。

3、叉(cha)車叉(cha)架(jia)下降速度太快

故(gu)障檢查：節(jie)流閥卡在打開位置或裝反

故障排(pai)除(chu)：重裝節流閥

4、叉車起升缸(gang)自由下滑量(liang)太大(da)(da)或傾斜缸(gang)自傾角太大(da)(da)

故(gu)障檢查：換向閥閥桿內泄漏(lou)太大(da)，傾斜缸活塞密封圈(quan)失效(xiao)內漏(lou)

故障排除：更換(huan)閥桿或更換(huan)密封(feng)圈

5、液壓缸活塞(sai)桿帶油

故障檢查：油封是否(fou)損壞(huai)

故障排(pai)除：更換(huan)油封（威海力(li)建(jian)冶金液壓設備(bei)廠(chang)推薦）