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擺動式液壓缸

擺動(dong)(dong)(dong)式液壓(ya)缸(gang)(gang)是輸出扭矩并實現(xian)往復運動(dong)(dong)(dong)的(de)執行元件，有單葉片(pian)(pian)(pian)、雙葉片(pian)(pian)(pian)、螺(luo)(luo)旋擺動(dong)(dong)(dong)等(deng)幾種形式。葉片(pian)(pian)(pian)式式：定(ding)(ding)子塊固定(ding)(ding)在(zai)(zai)缸(gang)(gang)體上(shang)，而葉片(pian)(pian)(pian)和轉(zhuan)子連接在(zai)(zai)一起。根據進油方向(xiang)，葉片(pian)(pian)(pian)將帶動(dong)(dong)(dong)轉(zhuan)子作往復擺動(dong)(dong)(dong)。螺(luo)(luo)旋擺動(dong)(dong)(dong)式又分單螺(luo)(luo)旋擺動(dong)(dong)(dong)和雙螺(luo)(luo)旋兩種，現(xian)在(zai)(zai)雙螺(luo)(luo)旋比較常用(yong)，靠兩個(ge)螺(luo)(luo)旋副降液壓(ya)缸(gang)(gang)內活塞的(de)直線運動(dong)(dong)(dong)轉(zhuan)變(bian)為直線運動(dong)(dong)(dong)與自(zi)轉(zhuan)運動(dong)(dong)(dong)的(de)復he運動(dong)(dong)(dong)，從而實現(xian)擺動(dong)(dong)(dong)運動(dong)(dong)(dong)。

其次是裝(zhuang)(zhuang)配時(shi)有(you)異物進(jin)入及(ji)密封材料質(zhi)量不好。其后果則(ze)是動作緩慢(man)、無(wu)力(li)，嚴重時(shi)還會造成活塞及(ji)缸筒的(de)(de)損壞，出現“拉缸”現象。處理方法是調整速度控制閥，對照(zhao)安(an)裝(zhuang)(zhuang)說明(ming)應做必要的(de)(de)操作和改(gai)進(jin)。

(2)液壓(ya)回(hui)路泄(xie)漏(lou)(lou)。包括閥及(ji)液壓(ya)管路的泄(xie)漏(lou)(lou)。檢修方法是通過操(cao)縱換向閥檢查并消(xiao)除液壓(ya)連(lian)接管路的泄(xie)漏(lou)(lou)。

(3)液壓油(you)經溢流(liu)閥(fa)旁通(tong)回油(you)箱。

液壓缸(gang)結構基本上可以(yi)分(fen)為缸(gang)筒(tong)和(he)缸(gang)蓋、活塞和(he)活塞桿、密封裝(zhuang)置(zhi)(zhi)、緩沖(chong)裝(zhuang)置(zhi)(zhi)和(he)排氣裝(zhuang)置(zhi)(zhi)五個部分(fen)。今(jin)天(tian)威(wei)海力建小編著重帶著大(da)家了解(jie)一下缸(gang)筒(tong)和(he)缸(gang)蓋。

 缸筒和缸蓋

一般來說，缸(gang)(gang)筒(tong)和(he)(he)缸(gang)(gang)蓋的結(jie)構(gou)形(xing)(xing)式(shi)(shi)和(he)(he)其(qi)使(shi)用(yong)的材料(liao)有關。工(gong)(gong)作壓力p＜10MPa時(shi)(shi)，使(shi)用(yong)鑄(zhu)鐵；p＜20MPa時(shi)(shi)，使(shi)用(yong)無縫(feng)鋼(gang)(gang)管；p＞20MPa時(shi)(shi)，使(shi)用(yong)鑄(zhu)鋼(gang)(gang)或鍛(duan)鋼(gang)(gang)。法(fa)蘭(lan)連接(jie)(jie)(jie)式(shi)(shi)，結(jie)構(gou)簡單，容(rong)(rong)易(yi)加工(gong)(gong)，也容(rong)(rong)易(yi)裝(zhuang)拆，但外形(xing)(xing)尺寸(cun)(cun)和(he)(he)重(zhong)量都較(jiao)大，常(chang)用(yong)于鑄(zhu)鐵制的缸(gang)(gang)筒(tong)上(shang)。半(ban)環連接(jie)(jie)(jie)式(shi)(shi)，它的缸(gang)(gang)筒(tong)壁部(bu)因(yin)開了環形(xing)(xing)槽而(er)削弱(ruo)了強度，為此有時(shi)(shi)要(yao)加厚缸(gang)(gang)壁，它容(rong)(rong)易(yi)加工(gong)(gong)和(he)(he)裝(zhuang)拆，重(zhong)量較(jiao)輕，常(chang)用(yong)于無縫(feng)鋼(gang)(gang)管或鍛(duan)鋼(gang)(gang)制的缸(gang)(gang)筒(tong)上(shang)。螺紋連接(jie)(jie)(jie)式(shi)(shi)，它的缸(gang)(gang)筒(tong)端部(bu)結(jie)構(gou)復雜(za)，外徑加工(gong)(gong)時(shi)(shi)要(yao)求保證內外徑同心，裝(zhuang)拆要(yao)使(shi)用(yong)工(gong)(gong)具，它的外形(xing)(xing)尺寸(cun)(cun)和(he)(he)重(zhong)量都較(jiao)小，常(chang)用(yong)于無縫(feng)鋼(gang)(gang)管或鑄(zhu)鋼(gang)(gang)制的缸(gang)(gang)筒(tong)上(shang)。拉桿連接(jie)(jie)(jie)式(shi)(shi)，結(jie)構(gou)的通(tong)用(yong)性大，容(rong)(rong)易(yi)加工(gong)(gong)和(he)(he)裝(zhuang)拆，但外形(xing)(xing)尺寸(cun)(cun)較(jiao)大，且較(jiao)重(zhong)。焊接(jie)(jie)(jie)連接(jie)(jie)(jie)式(shi)(shi)，結(jie)構(gou)簡單，尺寸(cun)(cun)小，但缸(gang)(gang)底處內徑不易(yi)加工(gong)(gong)，且可能(neng)引起變形(xing)(xing)。