
威海力建液(ye)壓設備廠(chang)
經營模式(shi):生產加(jia)工
地址:山東(dong)省威海市羊亭孫家灘(tan)工業園(yuan)
主營:液(ye)壓(ya)缸,油缸,液(ye)壓(ya)系統
業(ye)務(wu)熱(re)線:
QQ:3049278720
液壓缸的介紹
液(ye)壓缸(gang)(gang)是將液(ye)壓能轉(zhuan)變為機(ji)械(xie)能的(de)、做(zuo)直線往(wang)復(fu)運(yun)動(dong)(或擺動(dong)運(yun)動(dong))的(de)液(ye)壓執行元件。它(ta)結(jie)構簡單、工(gong)作可(ke)靠。用(yong)它(ta)來實現(xian)往(wang)復(fu)運(yun)動(dong)時,可(ke)免(mian)去減速(su)裝(zhuang)置(zhi),并且(qie)沒有傳動(dong)間隙,運(yun)動(dong)平穩(wen),因(yin)此在各種機(ji)械(xie)的(de)液(ye)壓系統中得到廣泛應用(yong)。液(ye)壓缸(gang)(gang)輸出力和(he)活塞有效(xiao)面積及其兩邊的(de)壓差成正比(bi);液(ye)壓缸(gang)(gang)基(ji)本(ben)上(shang)由缸(gang)(gang)筒和(he)缸(gang)(gang)蓋、活塞和(he)活塞桿、密封裝(zhuang)置(zhi)、緩沖裝(zhuang)置(zhi)與排(pai)氣(qi)裝(zhuang)置(zhi)組成。緩沖裝(zhuang)置(zhi)與排(pai)氣(qi)裝(zhuang)置(zhi)視具體應用(yong)場合而定,其他裝(zhuang)置(zhi)則很重要。





液壓缸結構(gou)基本上可(ke)以分(fen)(fen)為缸筒和(he)(he)缸蓋、活塞和(he)(he)活塞桿、密封(feng)裝置(zhi)、緩(huan)沖裝置(zhi)和(he)(he)排氣裝置(zhi)五個部(bu)分(fen)(fen)。今天威海力建小編著重帶著大家了解一下(xia)缸筒和(he)(he)缸蓋。
缸(gang)筒(tong)和(he)缸(gang)蓋
一(yi)般來說,缸(gang)筒和(he)(he)(he)缸(gang)蓋的結(jie)構(gou)(gou)(gou)形(xing)(xing)(xing)式(shi)(shi)(shi)和(he)(he)(he)其使(shi)用(yong)(yong)的材料有關。工(gong)作壓力p<10MPa時,使(shi)用(yong)(yong)鑄(zhu)(zhu)鐵;p<20MPa時,使(shi)用(yong)(yong)無(wu)縫鋼管(guan);p>20MPa時,使(shi)用(yong)(yong)鑄(zhu)(zhu)鋼或(huo)(huo)鍛鋼。法蘭連(lian)接(jie)式(shi)(shi)(shi),結(jie)構(gou)(gou)(gou)簡(jian)單,容(rong)(rong)(rong)易(yi)加(jia)(jia)工(gong),也容(rong)(rong)(rong)易(yi)裝(zhuang)拆,但外(wai)(wai)形(xing)(xing)(xing)尺(chi)寸(cun)和(he)(he)(he)重(zhong)(zhong)量都較大(da),常用(yong)(yong)于(yu)鑄(zhu)(zhu)鐵制的缸(gang)筒上。半環連(lian)接(jie)式(shi)(shi)(shi),它的缸(gang)筒壁部因開了環形(xing)(xing)(xing)槽而(er)削弱了強(qiang)度,為此有時要加(jia)(jia)厚缸(gang)壁,它容(rong)(rong)(rong)易(yi)加(jia)(jia)工(gong)和(he)(he)(he)裝(zhuang)拆,重(zhong)(zhong)量較輕,常用(yong)(yong)于(yu)無(wu)縫鋼管(guan)或(huo)(huo)鍛鋼制的缸(gang)筒上。螺(luo)紋連(lian)接(jie)式(shi)(shi)(shi),它的缸(gang)筒端部結(jie)構(gou)(gou)(gou)復雜,外(wai)(wai)徑(jing)加(jia)(jia)工(gong)時要求保證內(nei)外(wai)(wai)徑(jing)同心,裝(zhuang)拆要使(shi)用(yong)(yong)工(gong)具,它的外(wai)(wai)形(xing)(xing)(xing)尺(chi)寸(cun)和(he)(he)(he)重(zhong)(zhong)量都較小(xiao),常用(yong)(yong)于(yu)無(wu)縫鋼管(guan)或(huo)(huo)鑄(zhu)(zhu)鋼制的缸(gang)筒上。拉桿(gan)連(lian)接(jie)式(shi)(shi)(shi),結(jie)構(gou)(gou)(gou)的通用(yong)(yong)性(xing)大(da),容(rong)(rong)(rong)易(yi)加(jia)(jia)工(gong)和(he)(he)(he)裝(zhuang)拆,但外(wai)(wai)形(xing)(xing)(xing)尺(chi)寸(cun)較大(da),且(qie)較重(zhong)(zhong)。焊接(jie)連(lian)接(jie)式(shi)(shi)(shi),結(jie)構(gou)(gou)(gou)簡(jian)單,尺(chi)寸(cun)小(xiao),但缸(gang)底處內(nei)徑(jing)不易(yi)加(jia)(jia)工(gong),且(qie)可能(neng)引起變(bian)形(xing)(xing)(xing)。
零部件加(jia)(jia)(jia)工(gong)精度的(de)(de)影響(xiang)問題(ti),在液(ye)壓缸(gang)(gang)的(de)(de)制(zhi)造過(guo)程(cheng)中(zhong)(zhong)應(ying)嚴格控制(zhi)缸(gang)(gang)體(ti)內(nei)(nei)壁(bi)(bi)和活(huo)塞桿(gan)表面加(jia)(jia)(jia)工(gong)精度,特(te)別是幾何(he)精度,尤其直(zhi)線度是關鍵,在國(guo)內(nei)(nei)加(jia)(jia)(jia)工(gong)工(gong)藝中(zhong)(zhong),活(huo)塞桿(gan)表面的(de)(de)加(jia)(jia)(jia)工(gong)基(ji)本上是車后(hou)磨(mo)削,保證直(zhi)線度問題(ti)不(bu)(bu)大,但對(dui)于缸(gang)(gang)體(ti)內(nei)(nei)壁(bi)(bi)的(de)(de)加(jia)(jia)(jia)工(gong),其加(jia)(jia)(jia)工(gong)方(fang)法很多,有(you)鏜削-滾壓、鏜削-珩磨(mo)、直(zhi)接(jie)珩磨(mo)等(deng),但由于國(guo)內(nei)(nei)材(cai)料(liao)(liao)的(de)(de)基(ji)礎水(shui)平(ping)較(jiao)國(guo)外有(you)差距(ju),管材(cai)坯料(liao)(liao)直(zhi)線度差,壁(bi)(bi)厚不(bu)(bu)均勻、硬度不(bu)(bu)均勻等(deng)因素,往往直(zhi)接(jie)影響(xiang)缸(gang)(gang)體(ti)內(nei)(nei)壁(bi)(bi)加(jia)(jia)(jia)工(gong)后(hou)的(de)(de)直(zhi)線度,因此建議采(cai)用(yong)鏜削-滾壓、鏜削-珩磨(mo)工(gong)藝,如直(zhi)接(jie)珩磨(mo),則(ze)必須(xu)首先提高管材(cai)坯料(liao)(liao)的(de)(de)直(zhi)線度。
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在允許(xu)的情況下,液壓缸(gang)的缸(gang)體(ti)壁厚安(an)全系數盡量(liang)選大一些,使缸(gang)體(ti)厚壁增加,特別是高壓工況下使用的油(you)缸(gang),以(yi)減小油(you)壓下的缸(gang)體(ti)變(bian)形,變(bian)形后的缸(gang)體(ti)也會引起液壓缸(gang)低速爬行。

李建波先生
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