一、電動葫蘆的組成結構
電動葫蘆結(jie)構(gou)緊湊,電(dian)機(ji)軸線垂直于卷筒軸線的(de)(de)電(dian)動(dong)葫(hu)蘆采(cai)(cai)用蝸(gua)輪傳動(dong)裝置。其缺點為(wei):長度(du)尺寸大(da),寬(kuan)度(du)方面尺寸大(da),結(jie)構(gou)粗笨(ben),機(ji)械效率低,加工較難等(deng)。液(ye)壓系(xi)統(tong)為(wei)雙(shuang)重(zhong)控(kong)制(zhi)(zhi),溢流調(diao)節閥(fa)、磁(ci)接點壓力表均可對(dui)壓力進行精(jing)確的(de)(de)控(kong)制(zhi)(zhi)。電(dian)器(qi)控(kong)制(zhi)(zhi)部(bu)門采(cai)(cai)用了低電(dian)壓控(kong)制(zhi)(zhi),增(zeng)加了支配系(xi)統(tong)的(de)(de)安全性。
起重量一般為(wei)(wei) 0.3~80噸(dun),起升(sheng)高度為(wei)(wei)3~30米。由電(dian)(dian)動(dong)機(ji)(ji)、傳動(dong)機(ji)(ji)構(gou)和(he)卷筒(tong)或(huo)鏈輪(lun)組成(cheng),分(fen)為(wei)(wei)鋼絲(si)繩電(dian)(dian)動(dong)葫蘆(lu)和(he)環(huan)鏈電(dian)(dian)動(dong)葫蘆(lu)兩種(zhong)。其(qi)中環(huan)鏈電(dian)(dian)動(dong)葫蘆(lu)分(fen)為(wei)(wei)進口和(he)國(guo)產兩種(zhong);鋼絲(si)繩電(dian)(dian)動(dong)葫蘆(lu)分(fen)單(dan)速提(ti)升(sheng)、雙速提(ti)升(sheng);微型電(dian)(dian)動(dong)葫蘆(lu)、卷揚(yang)機(ji)(ji)、多功能(neng)提(ti)升(sheng)機(ji)(ji)。
(一)組成結構
減(jian)速器(qi)、起升電(dian)機、運行電(dian)機、斷火器(qi)、電(dian)纜滑(hua)線、卷筒裝(zhuang)置(zhi)、吊鉤裝(zhuang)置(zhi)、聯軸(zhou)器(qi)、軟(ruan)纜電(dian)流引入器(qi)等集動力與(yu)制動力于一體。
起重量:0.25t-80t
起升高(gao)度(du):3m-30m
工作(zuo)級別:M3,M4
運行速度:20(30)m/min
起升速度:8m/min
(二)安裝使用
電動葫蘆一(yi)般安(an)裝(zhuang)在單梁起重(zhong)機,橋式(shi)起重(zhong)機,門式(shi)起重(zhong)機,懸掛起重(zhong)機上。稍(shao)加改造,還可以作卷揚機用。因此(ci),它是(shi)提高勞動效率,改善勞動條件的必備機械。
(三)運行條件
環境溫(wen)度:-20℃~+40℃
工作制度(du):中級JC25%
重(zhong)級:JC40%
當(dang)中級工(gong)作制(zhi)度電動葫(hu)蘆(lu)的起重量降低30%時,即為重級工(gong)作制(zhi)度JC40%的電動葫(hu)蘆(lu)。
重(zhong)級工作制(zhi)度JC40%的(de)電(dian)動(dong)葫(hu)蘆是(shi)用在工作比較繁重(zhong),負載經常在額定值或要求安全系(xi)數較高的(de)情況下。
電動葫蘆結構(gou)減速(su)器(qi):采用三級定(ding)軸斜齒(chi)輪(lun)轉動機(ji)構(gou),齒(chi)輪(lun)和齒(chi)輪(lun)軸用經過(guo)熱處理的合金鋼(gang)制(zhi)成(cheng)(cheng),箱體,箱蓋(gai)由優質(zhi)鑄鐵制(zhi)成(cheng)(cheng),裝(zhuang)配(pei)嚴密,密封良好。減速(su)器(qi)自成(cheng)(cheng)一個部(bu)件,裝(zhuang)卸極為方(fang)便。
控制箱:采用能(neng)在(zai)緊急情況下(xia)切(qie)斷(duan)主電路(lu),并帶(dai)有上下(xia)行(xing)(xing)程保護斷(duan)火限(xian)位器的裝(zhuang)置。確保了電動葫蘆的安全運行(xing)(xing)。電器元件(jian)壽命(ming)長,使用可(ke)靠。
鋼絲(si)(si)(si)繩(sheng):起重鋼絲(si)(si)(si)繩(sheng)包括磷化涂層(ceng)鋼絲(si)(si)(si)繩(sheng)、鍍鋅鋼絲(si)(si)(si)繩(sheng)和不銹鋼絲(si)(si)(si)繩(sheng),執行現行國家標(biao)準GB8918-2006重要(yao)用(yong)途鋼絲(si)(si)(si)繩(sheng),保證了經久耐用(yong)。
錐形(xing)(xing)電(dian)(dian)動機(ji)(ji)(ji):起(qi)升電(dian)(dian)機(ji)(ji)(ji)采用較(jiao)大起(qi)動力矩錐形(xing)(xing)轉子制(zhi)動異步電(dian)(dian)動機(ji)(ji)(ji),無須外加(jia)制(zhi)動器(qi)。電(dian)(dian)機(ji)(ji)(ji)負(fu)載持續率(lv)為(wei)25%,電(dian)(dian)機(ji)(ji)(ji)采用B級或F級絕(jue)緣,電(dian)(dian)機(ji)(ji)(ji)防護(hu)等級IP44/IP54。
按(an)鈕開關(guan):手(shou)操(cao)作輕(qing)巧(qiao)靈便(bian),分有繩操(cao)縱(zong)和無線(xian)遙(yao)控兩種方式。
電(dian)動葫蘆(lu)的組(zu)成部分(fen)有(you):電(dian)機(ji)、傳(chuan)動機(ji)構、卷(juan)筒和(he)鏈輪(lun)。
以電機和卷筒相(xiang)互位置不(bu)同大致(zhi)可分為(wei)四種類型:
1、電機(ji)軸(zhou)(zhou)線(xian)垂直于卷筒軸(zhou)(zhou)線(xian)的電動葫(hu)蘆(lu)采用(yong)蝸輪傳(chuan)動裝置,寬度方面尺寸(cun)大, 結構笨重, 機(ji)械效率(lv)低(di),加工較(jiao)困(kun)難,已沒(mei)有廠家生產這(zhe)種結構型式的產品了(le)。
2、電動(dong)機軸(zhou)線(xian)(xian)平行(xing)于卷筒軸(zhou)線(xian)(xian)的(de)電動(dong)葫蘆(lu),其優點(dian)為高度(du)與(yu)長度(du)尺寸(cun)小。其缺點(dian)為寬度(du)尺寸(cun)大(da),分組性、制造與(yu)裝(zhuang)配(pei)復雜,軌道(dao)轉彎半徑大(da)。
3、電機裝在卷(juan)筒里(li)面的電動(dong)葫蘆,其優點(dian)為(wei)長(chang)度尺寸小,結(jie)構緊湊。其主要缺點(dian)為(wei)電機散(san)熱條件差,分(fen)組(zu)性差,檢查、安(an)裝、維護電機不便, 供(gong)電裝置(zhi)復雜。
4、電(dian)機(ji)裝在卷筒外面的電(dian)動(dong)葫蘆,其(qi)優點(dian)(dian)為分組性好、通用化程度高(gao)、改變起升(sheng)高(gao)度容易、安(an)裝檢修(xiu)方便。其(qi)缺(que)點(dian)(dian)為長度尺寸大。
二、電動葫蘆卷筒外罩型號與卷筒尺寸
(一)電動葫蘆卷筒外罩型號
電動葫蘆卷筒(tong)的起重量主流的有5t、1t、2t、3t、5t、10t、16t等,對應(ying)的卷筒(tong)外罩的具體型號如下:
0.5t-6m卷(juan)筒外(wai)(wai)罩(zhao)、0.5t-9m卷(juan)筒外(wai)(wai)罩(zhao)、0.5t-12m卷(juan)筒外(wai)(wai)罩(zhao)、0.5t-18m卷(juan)筒外(wai)(wai)罩(zhao);
1t-6m卷筒外(wai)(wai)罩(zhao)(zhao)、1t-9m卷筒外(wai)(wai)罩(zhao)(zhao)、1t-12m卷筒外(wai)(wai)罩(zhao)(zhao)、1t-18m卷筒外(wai)(wai)罩(zhao)(zhao)、1t-24m卷筒外(wai)(wai)罩(zhao)(zhao)、1t-30m卷筒外(wai)(wai)罩(zhao)(zhao);
2t-6m卷(juan)筒外(wai)罩(zhao)(zhao)、2t-9m卷(juan)筒外(wai)罩(zhao)(zhao)、2t-12m卷(juan)筒外(wai)罩(zhao)(zhao)、2t-18m卷(juan)筒外(wai)罩(zhao)(zhao)、2t-24m卷(juan)筒外(wai)罩(zhao)(zhao)、2t-30m卷(juan)筒外(wai)罩(zhao)(zhao);
3t-6m卷(juan)筒(tong)外罩、3t-9m卷(juan)筒(tong)外罩、3t-12m卷(juan)筒(tong)外罩、3t-18m卷(juan)筒(tong)外罩、3t-24m卷(juan)筒(tong)外罩、3t-30m卷(juan)筒(tong)外罩;
5t-6m卷(juan)(juan)筒(tong)(tong)外罩、5t-9m卷(juan)(juan)筒(tong)(tong)外罩、5t-12m卷(juan)(juan)筒(tong)(tong)外罩、5t-18m卷(juan)(juan)筒(tong)(tong)外罩、5t-24m卷(juan)(juan)筒(tong)(tong)外罩、5t-30m卷(juan)(juan)筒(tong)(tong)外罩;
10t-9m卷(juan)筒(tong)(tong)(tong)外(wai)(wai)罩(zhao)、10t-12m卷(juan)筒(tong)(tong)(tong)外(wai)(wai)罩(zhao)、10t-18m卷(juan)筒(tong)(tong)(tong)外(wai)(wai)罩(zhao)、10t-24m卷(juan)筒(tong)(tong)(tong)外(wai)(wai)罩(zhao)、10t-30m卷(juan)筒(tong)(tong)(tong)外(wai)(wai)罩(zhao);
16t-9m卷筒(tong)外罩(zhao)(zhao)、16t-12m卷筒(tong)外罩(zhao)(zhao)、16t-18m卷筒(tong)外罩(zhao)(zhao)。
下面是電動葫(hu)蘆(lu)卷(juan)筒(tong)外(wai)罩型號尺寸(cun)圖:
(二)電動葫蘆卷筒尺寸