電動推(tui)桿是通用(yong)型的輔助驅動裝置,可廣泛運(yun)用(yong)于(yu)電力、機械、冶金、交通、礦(kuang)山、石油、化工、起(qi)重、運(yun)輸(shu)、建筑、糧飼加工等(deng)行業。具有性能(neng)可靠,動作靈敏,運(yun)行平穩,推(tui)拉力相同(tong),環(huan)境(jing)適應性好等(deng)特點。
主要結構
電(dian)動(dong)(dong)(dong)推桿由驅動(dong)(dong)(dong)電(dian)機、減速(su)齒輪(lun)、螺(luo)桿、螺(luo)母、導套(tao)、推桿、滑座、彈簧、外殼及渦(wo)輪(lun)、微動(dong)(dong)(dong)等工具(ju)組成。
電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)推(tui)(tui)(tui)(tui)桿(gan)(gan)是一(yi)種新型的(de),電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)推(tui)(tui)(tui)(tui)桿(gan)(gan)主要由電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)、推(tui)(tui)(tui)(tui)桿(gan)(gan)和(he)控制(zhi)裝(zhuang)置等(deng)(deng)(deng)機(ji)(ji)(ji)(ji)構(gou)組(zu)成的(de)一(yi)種新型直線執行(xing)機(ji)(ji)(ji)(ji)構(gou),可(ke)(ke)以實現遠距(ju)離控制(zhi)、集中控制(zhi)。電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)推(tui)(tui)(tui)(tui)桿(gan)(gan)在(zai)一(yi)定(ding)范圍行(xing)程(cheng)內作往(wang)返運動(dong)(dong)(dong),一(yi)般電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)推(tui)(tui)(tui)(tui)桿(gan)(gan)標準行(xing)程(cheng)在(zai),100,150,200,250,300,350,400mm,特殊行(xing)程(cheng)也(ye)可(ke)(ke)根(gen)據不(bu)同(tong)應(ying)用條件要求(qiu)設計定(ding)做(zuo)。電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)推(tui)(tui)(tui)(tui)桿(gan)(gan)可(ke)(ke)以根(gen)據不(bu)同(tong)的(de)應(ying)用負荷而(er)設計不(bu)同(tong)推(tui)(tui)(tui)(tui)力(li)的(de)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)推(tui)(tui)(tui)(tui)桿(gan)(gan),一(yi)般其(qi)最大推(tui)(tui)(tui)(tui)力(li)可(ke)(ke)達6000N,空載運行(xing)速(su)度為(wei)4mm~35mm/s,電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)推(tui)(tui)(tui)(tui)桿(gan)(gan)以24V/12V 直流永磁電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)為(wei)動(dong)(dong)(dong)力(li)源,把(ba)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)旋轉運動(dong)(dong)(dong)轉化為(wei)直線往(wang)復運動(dong)(dong)(dong)。推(tui)(tui)(tui)(tui)動(dong)(dong)(dong)一(yi)組(zu)來(lai)完成風(feng)門(men)、閥門(men)、閘門(men)、擋板(ban)等(deng)(deng)(deng)切換工(gong)(gong)作。采(cai)用電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)推(tui)(tui)(tui)(tui)桿(gan)(gan)作為(wei)執行(xing)機(ji)(ji)(ji)(ji)構(gou)不(bu)僅可(ke)(ke)減少采(cai)用所需(xu)的(de)氣源裝(zhuang)置和(he)輔助設備,也(ye)可(ke)(ke)減少執行(xing)機(ji)(ji)(ji)(ji)構(gou)的(de)重(zhong)量(liang)(liang)。氣動(dong)(dong)(dong)執行(xing)機(ji)(ji)(ji)(ji)構(gou)在(zai)整個(ge)控制(zhi)運行(xing)過程(cheng)中都需(xu)要有一(yi)定(ding)的(de)氣壓,雖(sui)然可(ke)(ke)采(cai)用消耗量(liang)(liang)小的(de)放大器等(deng)(deng)(deng),但日積月累(lei),耗氣量(liang)(liang)仍是巨大的(de)。采(cai)用電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)推(tui)(tui)(tui)(tui)桿(gan)(gan)執行(xing)機(ji)(ji)(ji)(ji)構(gou),在(zai)改變控制(zhi)開(kai)度時(shi),需(xu)要供電(dian)(dian)(dian)(dian)(dian),在(zai)達到(dao)所需(xu)開(kai)度時(shi)就可(ke)(ke)不(bu)再供電(dian)(dian)(dian)(dian)(dian),因此從節能(neng)看,電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)推(tui)(tui)(tui)(tui)桿(gan)(gan)執行(xing)機(ji)(ji)(ji)(ji)構(gou)比氣動(dong)(dong)(dong)執行(xing)機(ji)(ji)(ji)(ji)構(gou)有明(ming)顯節能(neng)優點。適用于遠距(ju)離操縱(zong)而(er)廣(guang)泛(fan)用于電(dian)(dian)(dian)(dian)(dian)力(li)、化工(gong)(gong)、冶金、礦山、輕(qing)工(gong)(gong)、交通、船舶等(deng)(deng)(deng)部(bu)門(men)的(de)風(feng)門(men)、閥門(men)、閘門(men)等(deng)(deng)(deng)機(ji)(ji)(ji)(ji)構(gou)的(de)啟閉(bi)、物料裝(zhuang)卸、等(deng)(deng)(deng)。現已(yi)被越來(lai)越多(duo)的(de)部(bu)門(men)用它來(lai)代替機(ji)(ji)(ji)(ji)構(gou)手(shou)、、減速(su)的(de)自動(dong)(dong)(dong)裝(zhuang)置。
工作原(yuan)理
電動機(ji)(ji)經(jing)齒(chi)輪減速后,帶動一對(dui)絲桿(gan)螺母。把電機(ji)(ji)的旋轉運動變成(cheng),利用完成(cheng)推桿(gan)動作(zuo)。如(ru)通過(guo)(guo)各種杠(gang)桿(gan)、搖(yao)桿(gan)或連桿(gan)等機(ji)(ji)構(gou)可(ke)完成(cheng)轉動、搖(yao)動等復(fu)雜動作(zuo)。通過(guo)(guo)改變杠(gang)桿(gan)長度,可(ke)以增大或加大行(xing)程。
渦輪形式:電機齒輪上的(de)渦桿(gan)帶動渦輪轉動,使渦輪內的(de)小絲桿(gan)作軸向移動,由連接板帶動限位桿(gan)相應作軸向移動,至所需行(xing)程時,通過調節壓(ya)下斷電,電動(dong)機停止(zhi)運轉(正反(fan)控制相(xiang)同)。
形式:電(dian)機通過(guo)減速齒輪后帶(dai)動安裝于內管(guan)的(de)小絲(si)桿,帶(dai)動與之(zhi)連接一起的(de)做軸向運行(xing)螺(luo)母,至所設定的(de)行(xing)程時(shi)螺(luo)母觸角壓住斷(duan)開(kai)電(dian)源,電(dian)機停止運動(反向與之(zhi)相(xiang)同)。
可(ke)選配,用以顯示推桿運行(xing)(xing)的行(xing)(xing)程狀態,還可(ke)加配,來(lai)實現分(fen)幾步走(zou)完整個行(xing)(xing)程(即走(zou)走(zou)停(ting)停(ting))。[2]
設計新(xin)穎精致、體積小、精度高、完全(quan)同步、自(zi)鎖性能好、衛(wei)生,電機直接驅(qu)動,不需要管道的(de)氣(qi)源、油路(lu),現已(yi)大量(liang)用于生產線、汽(qi)車(che)、透氣(qi)窗(chuang)開啟、軍(jun)工(gong)、舞臺、紡織(zhi)、污水處理等各(ge)個行業設備上。