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擺動式液壓缸

擺(bai)(bai)(bai)動(dong)(dong)(dong)(dong)式(shi)液(ye)壓缸(gang)是(shi)輸出(chu)扭矩并實現往(wang)復運(yun)(yun)動(dong)(dong)(dong)(dong)的執行元件，有單葉(xie)片、雙葉(xie)片、螺旋(xuan)(xuan)擺(bai)(bai)(bai)動(dong)(dong)(dong)(dong)等幾(ji)種(zhong)形式(shi)。葉(xie)片式(shi)式(shi)：定子(zi)塊固定在缸(gang)體上，而葉(xie)片和(he)轉子(zi)連(lian)接在一起(qi)。根據進油(you)方(fang)向，葉(xie)片將帶動(dong)(dong)(dong)(dong)轉子(zi)作往(wang)復擺(bai)(bai)(bai)動(dong)(dong)(dong)(dong)。螺旋(xuan)(xuan)擺(bai)(bai)(bai)動(dong)(dong)(dong)(dong)式(shi)又分單螺旋(xuan)(xuan)擺(bai)(bai)(bai)動(dong)(dong)(dong)(dong)和(he)雙螺旋(xuan)(xuan)兩(liang)(liang)種(zhong)，現在雙螺旋(xuan)(xuan)比(bi)較常(chang)用，靠兩(liang)(liang)個螺旋(xuan)(xuan)副降液(ye)壓缸(gang)內活塞的直線運(yun)(yun)動(dong)(dong)(dong)(dong)轉變為(wei)直線運(yun)(yun)動(dong)(dong)(dong)(dong)與自轉運(yun)(yun)動(dong)(dong)(dong)(dong)的復he運(yun)(yun)動(dong)(dong)(dong)(dong)，從而實現擺(bai)(bai)(bai)動(dong)(dong)(dong)(dong)運(yun)(yun)動(dong)(dong)(dong)(dong)。

(1)閥芯卡住(zhu)(zhu)或(huo)(huo)(huo)閥孔(kong)(kong)(kong)堵(du)塞(sai)。當流量(liang)閥或(huo)(huo)(huo)方向閥閥芯卡住(zhu)(zhu)或(huo)(huo)(huo)閥孔(kong)(kong)(kong)堵(du)塞(sai)時(shi)(shi)，液(ye)壓缸易發生誤動作(zuo)或(huo)(huo)(huo)動作(zuo)失靈。此時(shi)(shi)應檢(jian)(jian)查(cha)(cha)油(you)液(ye)的(de)污染情況；檢(jian)(jian)查(cha)(cha)臟物或(huo)(huo)(huo)膠(jiao)質(zhi)沉淀物是否卡住(zhu)(zhu)閥芯或(huo)(huo)(huo)堵(du)塞(sai)閥孔(kong)(kong)(kong)；檢(jian)(jian)查(cha)(cha)閥體的(de)磨損情況，清(qing)洗(xi)、更(geng)換(huan)系統過濾器，清(qing)洗(xi)油(you)箱，更(geng)換(huan)液(ye)壓介質(zhi)。

(2)活(huo)塞桿與缸(gang)筒卡住或液(ye)壓(ya)缸(gang)堵塞。此時無論如何操縱，液(ye)壓(ya)缸(gang)都不動作(zuo)或動作(zuo)甚微。這時應檢查活(huo)塞及活(huo)塞桿密封是(shi)否(fou)(fou)太(tai)(tai)緊(jin)，是(shi)否(fou)(fou)進(jin)入臟物(wu)及膠質(zhi)沉淀物(wu)：活(huo)塞桿與缸(gang)筒的軸心線(xian)是(shi)否(fou)(fou)對中，易損件和(he)密封件是(shi)否(fou)(fou)失效，所帶負荷(he)是(shi)否(fou)(fou)太(tai)(tai)大。

3、叉車叉架(jia)下(xia)降速度太快

故(gu)障檢查(cha)：節流閥卡在(zai)打開位置或裝反

故障排除：重(zhong)裝節流閥

4、叉車(che)起升缸自由下滑量太大或傾斜缸自傾角太大

故障檢查：換(huan)向(xiang)閥(fa)閥(fa)桿內泄漏(lou)(lou)太大(da)，傾斜缸活塞密封(feng)圈失(shi)效內漏(lou)(lou)

故障排除(chu)：更(geng)換閥桿或更(geng)換密封圈

5、液壓缸活塞桿帶(dai)油

故(gu)障檢查：油封是否損壞

故障排(pai)除(chu)：更換油封（威海力建(jian)冶(ye)金液壓設備廠(chang)推(tui)薦(jian)）