皮帶機防雨罩經常用(yong)來防(fang)雨(yu)，而(er)室外(wai)防(fang)護罩除了(le)防(fang)雨(yu)， 大的(de)(de)(de)作用(yong)是保護機械在(zai)各種惡劣(lie)環境（如粉塵、降雪(xue)、低溫(wen)、高溫(wen)等）下正常運轉(zhuan)。因而(er)，室外(wai)全天侯防(fang)護罩具有(you) 嚴格(ge)的(de)(de)(de)密(mi)閉環境，還具有(you)清(qing)雨(yu)、噴灑、提溫(wen)、降溫(wen)等功能。所以室外(wai)防(fang)雨(yu)罩的(de)(de)(de)價格(ge)遠超于室內防(fang)護罩。
彩鋼(gang)防雨罩的優點：具有(you)輕質、美觀和(he)良好(hao)的性(xing)能(neng)，又可以(yi)直接(jie)加工，它給建筑業(ye)、車輛制造業(ye)、造船業(ye)、家具行業(ye)、電器行業(ye)、礦業(ye)等提供了(le)一種新型(xing)原材(cai)料，起(qi)到(dao)了(le)以(yi)鋼(gang)代木、 施工、節約能(neng)源(yuan)、防止(zhi)污染等良好(hao)的效果。使用鍍(du)鋅(xin)鋼(gang)板為基板的彩色(se)涂(tu)層(ceng)(ceng)(ceng)鋼(gang)板，涂(tu)有(you)鋅(xin)保護外，鋅(xin)層(ceng)(ceng)(ceng)上的涂(tu)層(ceng)(ceng)(ceng)起(qi)到(dao)了(le)覆蓋隔離的作(zuo)用，可以(yi)防止(zhi)鋼(gang)板生銹，使用壽(shou)命比鍍(du)鋅(xin)板 長(chang)，據介紹涂(tu)層(ceng)(ceng)(ceng)鋼(gang)的使用壽(shou)命比鍍(du)鋅(xin)板長(chang)50%。
皮(pi)帶機防雨罩一般根據物(wu)(wu)料(liao)(liao)搬(ban)運系(xi)統的(de)(de)要求、物(wu)(wu)料(liao)(liao)裝卸(xie)地點的(de)(de)各(ge)(ge)種(zhong)條(tiao)件(jian)、有(you)關的(de)(de)生產工藝過程和(he)物(wu)(wu)料(liao)(liao)的(de)(de)特性等來確定各(ge)(ge)主要參數。
①輸(shu)(shu)送(song)(song)(song)(song)能力：輸(shu)(shu)送(song)(song)(song)(song)機(ji)的輸(shu)(shu)送(song)(song)(song)(song)能力是指單位時(shi)間內輸(shu)(shu)送(song)(song)(song)(song)的物料(liao)量。在輸(shu)(shu)送(song)(song)(song)(song)散狀物料(liao)時(shi)，以每小時(shi)輸(shu)(shu)送(song)(song)(song)(song)物料(liao)的質量或體積計算；在輸(shu)(shu)送(song)(song)(song)(song)成件物品時(shi)，以每小時(shi)輸(shu)(shu)送(song)(song)(song)(song)的件數計算。
②輸(shu)(shu)送(song)(song)速度(du)：提高(gao)輸(shu)(shu)送(song)(song)速度(du)可(ke)以(yi)(yi)(yi)提高(gao)輸(shu)(shu)送(song)(song)能力。在以(yi)(yi)(yi)輸(shu)(shu)送(song)(song)帶作牽(qian)引(yin)件且輸(shu)(shu)送(song)(song)長(chang)度(du)較大時，輸(shu)(shu)送(song)(song)速度(du)日(ri)趨增大。但高(gao)速運轉的(de)(de)帶式輸(shu)(shu)送(song)(song)機需注(zhu)意振動(dong)、噪(zao)聲(sheng)和(he)啟動(dong)、制動(dong)等問(wen)題(ti)。對于以(yi)(yi)(yi)鏈條作為牽(qian)引(yin)件的(de)(de)輸(shu)(shu)送(song)(song)機，輸(shu)(shu)送(song)(song)速度(du)不宜(yi)過大，以(yi)(yi)(yi)防止增大動(dong)力載荷(he)。同時進行工(gong)藝操(cao)作的(de)(de)輸(shu)(shu)送(song)(song)機，輸(shu)(shu)送(song)(song)速度(du)應按生產(chan)工(gong)藝要(yao)求確定。
③構件尺寸：輸送機的構件尺寸包括(kuo)輸送帶寬度、板條寬度、料斗容(rong)(rong)積、管道直(zhi)徑和容(rong)(rong)器大(da)小等(deng)。這些構件尺寸都(dou)直(zhi)接影響輸送機的輸送能(neng)力。
④輸(shu)(shu)送(song)長度(du)和(he)(he)傾角(jiao)：輸(shu)(shu)送(song)線路長度(du)和(he)(he)傾角(jiao)大小直接影響輸(shu)(shu)送(song)機的總(zong)阻力和(he)(he)所需(xu)要的功率。
