sigunjuanbanjidechuandongxitongquanbushezhizaiyoujijiadeyouce，jijiajichuandongbufenshezhizaizhengtihanjiedizuoshang，gouchengjiqidezhuti
，juanbanshishanggunshoudaoxiangshangdejuanzhilifashengxiangshangdenaoqubianxing，zhenghaoyuyaoguxingdezhongjianbufendixiao
，shishanggunjibenquyupingzhidezhuangtai.

　　這zhe種zhong方fang法fa在zai卷juan板ban機ji中zhong應ying用yong較jiao為wei廣guang泛fan
，被bei多duo數shu設she計ji者zhe采cai用yong
，該gai設she計ji雖sui能neng起qi到dao一yi定ding的de補bu償chang效xiao果guo，但dan計ji算suan和he製zhi造zao比bi較jiao困kun難nan
，為wei上shang工gong作zuo輥gun加jia設she支zhi承cheng
，該gai方fang法fa為wei上shang工gong作zuo輥gun加jia設she支zhi承cheng梁liang及ji支zhi承cheng輥gun，通tong過guo調tiao節jie支zhi承cheng輥gun的de高gao度du可ke以yi使shi上shang工gong作zuo輥gun向xiang下xia產chan生sheng一yi定ding的de預yu變bian形xing。

　　與(yu)卷(juan)板(ban)時(shi)上(shang)工(gong)作(zuo)輥(gun)產(chan)生(sheng)的(de)向(xiang)上(shang)的(de)變(bian)形(xing)剛(gang)好(hao)抵(di)消(xiao)，從(cong)而(er)達(da)到(dao)撓(nao)度(du)補(bu)償(chang)的(de)目(mu)的(de)，這(zhe)種(zhong)方(fang)法(fa)多(duo)用(yong)於(yu)專(zhuan)製(zhi)寬(kuan)度(du)尺(chi)寸(cun)較(jiao)大(da)的(de)卷(juan)板(ban)機(ji)，如(ru)船(chuan)用(yong)卷(juan)板(ban)機(ji)及(ji)石(shi)油(you)儲(chu)運(yun)罐(guan)體(ti)的(de)卷(juan)製(zhi)。 且隻能卷製圓弧板件或卷筒直徑較大的工件，設置可升降支承。

　　該(gai)方(fang)法(fa)為(wei)上(shang)下(xia)作(zuo)輥(gun)設(she)置(zhi)可(ke)升(sheng)降(jiang)支(zhi)承(cheng)梁(liang)及(ji)支(zhi)承(cheng)輥(gun)，當(dang)進(jin)行(xing)板(ban)端(duan)預(yu)彎(wan)時(shi)，受(shou)力(li)較(jiao)大(da)，工(gong)作(zuo)輥(gun)會(hui)產(chan)生(sheng)撓(nao)曲(qu)變(bian)形(xing)，此(ci)時(shi)把(ba)支(zhi)承(cheng)梁(liang)降(jiang)下(xia)來(lai)，對(dui)上(shang)工(gong)作(zuo)輥(gun)進(jin)行(xing)支(zhi)承(cheng)
，減(jian)少(shao)其(qi)變(bian)形(xing)
，預(yu)彎(wan)結(jie)束(shu)後(hou)，卷(juan)圓(yuan)時(shi)，將(jiang)支(zhi)承(cheng)梁(liang)升(sheng)起(qi)，三(san)輥(gun)卷(juan)板(ban)機(ji)可(ke)根(gen)據(ju)工(gong)作(zuo)情(qing)況(kuang)分(fen)別(bie)采(cai)用(yong)油(you)杯(bei)潤(run)滑(hua)

、人工加油和箱式潤滑等三種方式。

　　筒tong體ti可ke以yi從cong上shang工gong作zuo輥gun與yu支zhi承cheng輥gun中zhong間jian穿chuan過guo
，該gai方fang法fa適shi用yong於yu卷juan筒tong直zhi徑jing較jiao小xiao，同tong時shi要yao求qiu板ban端duan預yu彎wan的de工gong件jian，使shi用yong反fan壓ya力li，該gai方fang法fa通tong過guo反fan壓ya力li作zuo用yong來lai減jian小xiao上shang工gong作zuo輥gun撓nao度du，在zai機ji架jia外wai側ce安an裝zhuang兩liang個ge液ye壓ya缸gang分fen別bie垂chui直zhi向xiang上shang給gei上shang輥gun兩liang端duan施shi加jia反fan壓ya力li，使shi上shang輥gun中zhong間jian段duan產chan生sheng向xiang下xia的de彎wan曲qu變bian形xing。

　　從(cong)而(er)消(xiao)除(chu)因(yin)上(shang)輥(gun)撓(nao)度(du)不(bu)足(zu)而(er)產(chan)生(sheng)的(de)變(bian)形(xing)
，該(gai)方(fang)法(fa)的(de)優(you)勢(shi)在(zai)於(yu)補(bu)償(chang)量(liang)隨(sui)負(fu)載(zai)變(bian)化(hua)而(er)變(bian)化(hua)，缺(que)點(dian)是(shi)機(ji)械(xie)結(jie)構(gou)較(jiao)複(fu)雜(za)設(she)，計(ji)難(nan)度(du)大(da)，造(zao)價(jia)較(jiao)高(gao)。 而三輥卷板機的電控台設在機器的前麵

，所以各輥軸頸
、升降絲杆與傳動軸軸頸等為油杯潤滑。

　　齒輪
、蝸輪、活huo動dong軸zhou承cheng與yu翹qiao起qi調tiao整zheng機ji構gou絲si杆gan等deng處chu采cai用yong定ding期qi人ren工gong加jia油you潤run滑hua。減jian速su機ji內nei齒chi輪lun與yu軸zhou承cheng的de潤run滑hua是shi借jie助zhu於yu油you在zai箱xiang體ti內nei的de飛fei濺jian來lai實shi現xian的de。為wei指zhi示shi上shang輥gun升sheng降jiang位wei移yi，在zai右you機ji架jia及ji軸zhou承cheng處chu設she有you指zhi針zhen、標尺，這種結構的三輥卷板機。

　　youyuliangxiagundeweizhiguding，qieshizhongduichengyushanggun，zhijieyongtajuanzhichudegongjiandeduanbushengyuzhibianjiaochang
，xuyaoxianjiezhuyuzhuanyonggongjuhuoqitashebeiyuwanduanbulaimibuzheyibuzu
，weibianyutongxinggongjiancongshanggunquchu
，xiagundezhengfanxuanzhuan、上輥的升降、翹起、放fang平ping均jun由you電dian器qi控kong製zhi，卸xie料liao的de翻fan轉zhuan軸zhou承cheng的de脫tuo開kai與yu閉bi合he，翹qiao起qi調tiao正zheng機ji構gou的de位wei置zhi調tiao整zheng
，離li合he器qi的de離li合he均jun為wei手shou動dong操cao作zuo。卷juan板ban機ji在zai上shang輥gun左zuo端duan設she有you翻fan轉zhuan軸zhou承cheng
，右you端duan設she有you翹qiao起qi調tiao整zheng結jie構gou，而er國guo外wai有you公gong司si曾zeng生sheng產chan過guo這zhe種zhong機ji型xing
，國guo內nei目mu前qian僅jin有you少shao數shu廠chang家jia生sheng產chan。