通(tong)常，為了防(fang)止(zhi)卷(juan)簾(lian)門(men)的(de)驅動裝(zhuang)置發生(sheng)斷鏈或斷軸時，卷(juan)簾(lian)門(men)因(yin)自重快速下降，傷(shang)及門(men)下的(de)人(ren)或物，同時也保護(hu)門(men)簾(lian)，蘇州卷(juan)簾(lian)門(men)生(sheng)產廠家會在卷(juan)簾(lian)門(men)上安裝(zhuang)安全制動裝(zhuang)置。

　　為確保卷簾門(men)等在(zai)切斷電源瞬間停止運行(xing)并(bing)立即停留在(zai)該位(wei)置，防止被拉起的(de)卷簾門(men)等因自重發生下滑的(de)現象，消除因轉子高(gao)速(su)成轉動后的(de)慣性作用造(zao)成的(de)定位(wei)不準。為確保卷簾門(men)等自鎖能力和使用的(de)安全性，需設(she)置一(yi)種制動剎(cha)車裝置。

　　隨(sui)(sui)著(zhu)人(ren)們生活水平的提(ti)高以(yi)及對便捷性的要(yao)求，卷(juan)(juan)簾(lian)門(men)(men)(men)(men)(men)(men)越來越多地被采用。現(xian)有(you)產品的卷(juan)(juan)簾(lian)門(men)(men)(men)(men)(men)(men)主(zhu)要(yao)包括：電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)、鏈輪(lun)(lun)、門(men)(men)(men)(men)(men)(men)簾(lian)卷(juan)(juan)筒(tong)、門(men)(men)(men)(men)(men)(men)片(pian)(pian)，鏈輪(lun)(lun)與門(men)(men)(men)(men)(men)(men)簾(lian)卷(juan)(juan)筒(tong)固定連接，當(dang)通過按鈕或(huo)遙控裝(zhuang)置(zhi)開(kai)(kai)(kai)關門(men)(men)(men)(men)(men)(men)時(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)轉(zhuan)動，電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)輸出(chu)軸通過鏈條(tiao)帶動鏈輪(lun)(lun)同步轉(zhuan)動，鏈輪(lun)(lun)帶動門(men)(men)(men)(men)(men)(men)簾(lian)卷(juan)(juan)筒(tong)同步轉(zhuan)動把門(men)(men)(men)(men)(men)(men)片(pian)(pian)卷(juan)(juan)起或(huo)放下(xia)，當(dang)門(men)(men)(men)(men)(men)(men)片(pian)(pian)處(chu)于全(quan)開(kai)(kai)(kai)或(huo)全(quan)開(kai)(kai)(kai)狀(zhuang)態(tai)時(shi)會觸(chu)動限位開(kai)(kai)(kai)關停(ting)止電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)轉(zhuan)動，由于卷(juan)(juan)簾(lian)門(men)(men)(men)(men)(men)(men)驅動電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)里設置(zhi)有(you)剎(cha)車裝(zhuang)置(zhi)，當(dang)操作結束(shu)后(hou)或(huo)者停(ting)電(dian)(dian)(dian)(dian)(dian)(dian)情(qing)況下(xia)，電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)剎(cha)車系統使(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)輸出(chu)軸處(chu)于剎(cha)車狀(zhuang)態(tai)，鏈輪(lun)(lun)以(yi)及門(men)(men)(men)(men)(men)(men)簾(lian)卷(juan)(juan)筒(tong)因此(ci)處(chu)于閉鎖狀(zhuang)態(tai)，無法開(kai)(kai)(kai)關門(men)(men)(men)(men)(men)(men)。停(ting)電(dian)(dian)(dian)(dian)(dian)(dian)情(qing)況下(xia)無法開(kai)(kai)(kai)關卷(juan)(juan)簾(lian)門(men)(men)(men)(men)(men)(men)存在(zai)安(an)全(quan)隱患，目前的解決(jue)方案主(zhu)要(yao)有(you)：一是為驅動電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)配備后(hou)備電(dian)(dian)(dian)(dian)(dian)(dian)源，使(shi)(shi)其(qi)隨(sui)(sui)時(shi)可以(yi)操作。二是驅動電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)上設置(zhi)有(you)手(shou)動拉鏈作為應急(ji)裝(zhuang)置(zhi)，停(ting)電(dian)(dian)(dian)(dian)(dian)(dian)或(huo)遙控系統發生故障時(shi)，可以(yi)手(shou)動開(kai)(kai)(kai)關門(men)(men)(men)(men)(men)(men)。