一(yi)、半(ban)自動電(dian)動起子(zi)
在達到設定(ding)扭力后不會自(zi)(zi)(zi)動剎車(che)停止的起子,稱(cheng)之(zhi)為半自(zi)(zi)(zi)動電動起子。通常半自(zi)(zi)(zi)動設計為手(shou)按式。半自(zi)(zi)(zi)動有分AC高壓(ya)直插式,與經(jing)過電源變壓(ya)為DC低壓(ya)式。
二、全自動電(dian)動起子(zi)
在(zai)達到設定扭力后能夠(gou)完全(quan)自(zi)動(dong)剎車(che)并停止運轉的電(dian)動(dong)起(qi)子(zi)稱為全(quan)自(zi)動(dong)電(dian)動(dong)起(qi)子(zi)。全(quan)自(zi)動(dong)電(dian)動(dong)起(qi)子(zi)又分為AC高(gao)壓(ya)和(he)DC低(di)壓(ya)兩(liang)個系(xi)列,根據操作啟動(dong)模式的不同又分為手按式和(he)下壓(ya)式兩(liang)種。
高(gao)壓(ya)(ya)系列電(dian)動起(qi)子(zi)不需要單獨電(dian)源供應器(qi)轉換電(dian)壓(ya)(ya),直接(jie)與市電(dian)連接(jie),操作快(kuai)捷占用(yong)(yong)空(kong)間小。低壓(ya)(ya)系列電(dian)動起(qi)子(zi)體積小重量輕(qing),由直流馬(ma)達驅動,壽命長安全系數高(gao)。手按式電(dian)動起(qi)子(zi)操作啟(qi)(qi)(qi)動時(shi)只(zhi)需用(yong)(yong)手指(zhi)(zhi)按住啟(qi)(qi)(qi)動杠桿(gan),或壓(ya)(ya)板按鈕等(deng)。下壓(ya)(ya)式電(dian)動起(qi)子(zi)操作啟(qi)(qi)(qi)動時(shi)無需用(yong)(yong)手指(zhi)(zhi)按住啟(qi)(qi)(qi)動杠桿(gan),或壓(ya)(ya)板按鈕等(deng),直接(jie)對準工(gong)件(jian)壓(ya)(ya)下就可啟(qi)(qi)(qi)動。