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帶式輸送機轉彎裝置中轉向滾筒的優化設計
發布時間:2021-11-30  瀏覽量:1491次

摘要:針(zhen)對(dui)目前帶式(shi)(shi)輸(shu)(shu)送(song)(song)(song)機(ji)轉(zhuan)(zhuan)(zhuan)彎(wan)裝置中轉(zhuan)(zhuan)(zhuan)向滾(gun)筒存在的(de)(de)小(xiao)托輥支(zhi)承方(fang)式(shi)(shi)帶來的(de)(de)輸(shu)(shu)送(song)(song)(song)帶局(ju)部(bu)應力過大(da)、易磨損(sun)(sun)等技(ji)術缺(que)陷,提(ti)出了(le)(le)一種(zhong)新(xin)的(de)(de)設計方(fang)案(an),改變了(le)(le)現有轉(zhuan)(zhuan)(zhuan)向滾(gun)筒對(dui)輸(shu)(shu)送(song)(song)(song)帶的(de)(de)支(zhi)承和(he)(he)輸(shu)(shu)送(song)(song)(song)方(fang)式(shi)(shi),使輸(shu)(shu)送(song)(song)(song)帶受力均勻,且(qie)支(zhi)承件和(he)(he)輸(shu)(shu)送(song)(song)(song)帶之間沒有相對(dui)運動,避免了(le)(le)對(dui)輸(shu)(shu)送(song)(song)(song)帶的(de)(de)磨損(sun)(sun)。同時(shi)還可通過簡單地(di)改變設計參(can)數,便可使一套轉(zhuan)(zhuan)(zhuan)向裝置適用于(yu)多種(zhong)轉(zhuan)(zhuan)(zhuan)彎(wan)角度,提(ti)高了(le)(le)設備的(de)(de)利用率。

帶(dai)式輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)機(ji)(ji)是(shi)現代散裝物料(liao)的主要輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)設備(bei)(bei),因其(qi)輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)距(ju)離長、運(yun)(yun)(yun)輸(shu)(shu)(shu)(shu)(shu)(shu)量大、成(cheng)本低(di)、效(xiao)率(lv)(lv)高、運(yun)(yun)(yun)行安全可靠和操作程序(xu)簡便等優點,而被(bei)廣泛應(ying)用于(yu)煤炭、化工(gong)、冶金(jin)、港口、糧食及隧道掘進等工(gong)程領(ling)域的物料(liao)輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)系統。然而,傳統的帶(dai)式輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)機(ji)(ji)一(yi)般為直線運(yun)(yun)(yun)輸(shu)(shu)(shu)(shu)(shu)(shu),當運(yun)(yun)(yun)輸(shu)(shu)(shu)(shu)(shu)(shu)路徑出現轉(zhuan)彎時,必須增加(jia)相應(ying)的配套設備(bei)(bei)。通常采用的方法(fa)是(shi)使用多部(bu)帶(dai)式輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)機(ji)(ji)搭接,或在轉(zhuan)彎處采用其(qi)他輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)機(ji)(ji)代替(ti),這不僅增加(jia)了(le)人力、物力和財力的支(zhi)出,還導致運(yun)(yun)(yun)輸(shu)(shu)(shu)(shu)(shu)(shu)系統復(fu)雜化,使運(yun)(yun)(yun)輸(shu)(shu)(shu)(shu)(shu)(shu)效(xiao)率(lv)(lv)降(jiang)低(di),檢修、維護(hu)成(cheng)本增加(jia),造(zao)成(cheng)帶(dai)式輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)機(ji)(ji)的運(yun)(yun)(yun)輸(shu)(shu)(shu)(shu)(shu)(shu)優勢難以(yi)充(chong)分發揮。

    近些年,對帶(dai)式輸送機轉彎(wan)(wan)裝置(zhi)(zhi)的(de)(de)理論研究(jiu)掀起(qi)了(le)熱(re)潮,從國內外的(de)(de)眾多期刊(kan)中不難(nan)看出,對轉彎(wan)(wan)裝置(zhi)(zhi)的(de)(de)研究(jiu)已經達到(dao)相當高的(de)(de)水平,并(bing)且(qie)研究(jiu)成(cheng)果(guo)日(ri)趨成(cheng)熟,尤其是在煤(mei)礦(kuang)開(kai)采企業已得到(dao)了(le)較為廣泛的(de)(de)應用,如淮南礦(kuang)業集團潘一礦(kuang)、樂平礦(kuang)務局沿溝煤(mei)礦(kuang)、開(kai)灤集團公司林南倉礦(kuang)等。與傳(chuan)統(tong)的(de)(de)直線帶(dai)式輸送機相比,使用轉彎(wan)(wan)裝置(zhi)(zhi)的(de)(de)帶(dai)式輸送機結構(gou)簡單,節能(neng)效(xiao)果(guo)顯著,輸送效(xiao)率大(da)大(da)提高,并(bing)且(qie)能(neng)夠有(you)效(xiao)地(di)降低(di)對于設備、能(neng)源、空間和場地(di)的(de)(de)投入,降低(di)投資和運營成(cheng)本(ben)。

1轉彎裝置工作原理

目前,較為(wei)成熟的(de)(de)引式輸(shu)送(song)(song)機(ji)(ji)(ji)(ji)轉(zhuan)彎裝(zhuang)置是(shi)一(yi)種與普通(tong)帶(dai)(dai)式輸(shu)送(song)(song)機(ji)(ji)(ji)(ji)配套使(shi)用的(de)(de)用于轉(zhuan)彎運輸(shu)的(de)(de)裝(zhuang)置,可實現帶(dai)(dai)式輸(shu)送(song)(song)機(ji)(ji)(ji)(ji)的(de)(de)變向(xiang)(xiang)(xiang)(xiang)(xiang)運輸(shu)。帶(dai)(dai)式輸(shu)送(song)(song)機(ji)(ji)(ji)(ji)轉(zhuan)彎裝(zhuang)置由轉(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)滾筒(tong)(tong)、改(gai)向(xiang)(xiang)(xiang)(xiang)(xiang)滾筒(tong)(tong)、緩沖托輥(gun)組、平托輥(gun)、機(ji)(ji)(ji)(ji)架、清(qing)掃(sao)器和擋料(liao)裝(zhuang)置等部分組成。從(cong)(cong)機(ji)(ji)(ji)(ji)尾方向(xiang)(xiang)(xiang)(xiang)(xiang)傳送(song)(song)過來的(de)(de)輸(shu)送(song)(song)帶(dai)(dai)通(tong)過上(shang)轉(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)滾筒(tong)(tong)進行(xing)轉(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)和改(gai)向(xiang)(xiang)(xiang)(xiang)(xiang),改(gai)向(xiang)(xiang)(xiang)(xiang)(xiang)后(hou)的(de)(de)輸(shu)送(song)(song)帶(dai)(dai)通(tong)往機(ji)(ji)(ji)(ji)頭(tou),物料(liao)在(zai)輸(shu)送(song)(song)帶(dai)(dai)轉(zhuan)向(xiang)(xiang)(xiang)(xiang)(xiang)的(de)(de)同時被轉(zhuan)載,卸落在(zai)改(gai)向(xiang)(xiang)(xiang)(xiang)(xiang)后(hou)的(de)(de)輸(shu)送(song)(song)帶(dai)(dai)上(shang)被運往機(ji)(ji)(ji)(ji)頭(tou);從(cong)(cong)機(ji)(ji)(ji)(ji)頭(tou)返(fan)回(hui)的(de)(de)回(hui)程(cheng)帶(dai)(dai)通(tong)過下改(gai)向(xiang)(xiang)(xiang)(xiang)(xiang)滾筒(tong)(tong)改(gai)向(xiang)(xiang)(xiang)(xiang)(xiang)后(hou)通(tong)向(xiang)(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)尾。

2轉彎裝置的轉向滾筒

    轉(zhuan)(zhuan)(zhuan)向滾筒(tong)是轉(zhuan)(zhuan)(zhuan)彎裝置的核心部(bu)(bu)件,被(bei)(bei)固定在(zai)(zai)機架(jia)上(shang)(shang)。目(mu)前應用(yong)(yong)的轉(zhuan)(zhuan)(zhuan)向滾筒(tong)工作原(yuan)理(li)基本(ben)相(xiang)同,都是在(zai)(zai)輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)經過的圓周面上(shang)(shang)按規律布置若(ruo)干個小(xiao)托(tuo)(tuo)(tuo)輥(gun)(gun)(gun)(gun),令每個小(xiao)托(tuo)(tuo)(tuo)輥(gun)(gun)(gun)(gun)的軸(zhou)(zhou)線方向和(he)該(gai)處輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)的運(yun)(yun)行方向相(xiang)垂直,輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)在(zai)(zai)所有(you)小(xiao)托(tuo)(tuo)(tuo)輥(gun)(gun)(gun)(gun)的外(wai)周包絡面上(shang)(shang)運(yun)(yun)行。這(zhe)樣的轉(zhuan)(zhuan)(zhuan)向滾筒(tong)裝置雖(sui)然解決(jue)了輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)轉(zhuan)(zhuan)(zhuan)彎運(yun)(yun)行的基本(ben)問題,但由(you)于每個小(xiao)托(tuo)(tuo)(tuo)輥(gun)(gun)(gun)(gun)的軸(zhou)(zhou)線和(he)轉(zhuan)(zhuan)(zhuan)向滾筒(tong)軸(zhou)(zhou)線存(cun)在(zai)(zai)一個角(jiao)度,所以(yi)小(xiao)托(tuo)(tuo)(tuo)輥(gun)(gun)(gun)(gun)兩(liang)端面和(he)輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)接(jie)觸的地方凸(tu)出于其(qi)他部(bu)(bu)位,輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)在(zai)(zai)該(gai)處被(bei)(bei)頂起,導致輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)在(zai)(zai)該(gai)處應力過大,易(yi)被(bei)(bei)磨損(sun),長期運(yun)(yun)行輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)表面易(yi)被(bei)(bei)磨成一條一條的溝痕;如果(guo)小(xiao)托(tuo)(tuo)(tuo)輥(gun)(gun)(gun)(gun)出現故障卡死,還可能使輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)撕裂。針(zhen)對(dui)上(shang)(shang)述問題,對(dui)轉(zhuan)(zhuan)(zhuan)向滾筒(tong)進(jin)行改(gai)進(jin)設計。小(xiao)托(tuo)(tuo)(tuo)輥(gun)(gun)(gun)(gun)改(gai)為圓弧母線,即兩(liang)頭(tou)小(xiao)、中間大的形狀,雖(sui)然在(zai)(zai)一定程度上(shang)(shang)降低了輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)局(ju)部(bu)(bu)應力,但實踐證明,采(cai)用(yong)(yong)這(zhe)種方式布置小(xiao)托(tuo)(tuo)(tuo)輥(gun)(gun)(gun)(gun),由(you)于相(xiang)鄰(lin)小(xiao)托(tuo)(tuo)(tuo)輥(gun)(gun)(gun)(gun)端面之間始(shi)(shi)終存(cun)在(zai)(zai)空當(dang),且軸(zhou)(zhou)線之間存(cun)在(zai)(zai)夾角(jiao),所以(yi)始(shi)(shi)終不能徹底解決(jue)輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)局(ju)部(bu)(bu)應力過大的問題;母線非直線的小(xiao)托(tuo)(tuo)(tuo)輥(gun)(gun)(gun)(gun),由(you)于和(he)輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)接(jie)觸處各點線速度不相(xiang)等(deng),還會造成對(dui)輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)的摩擦損(sun)傷,這(zhe)樣不僅降低了帶(dai)(dai)(dai)(dai)式輸(shu)(shu)(shu)送(song)(song)(song)(song)機的工作效率(lv),增加了能耗(hao),同時(shi)嚴重(zhong)制約了輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)的使用(yong)(yong)壽命,增加了設備運(yun)(yun)營成本(ben)。

因(yin)此,如何(he)使輸(shu)送(song)帶在(zai)轉彎(wan)運行(xing)繞經轉向滾筒時應力均勻,沒有(you)額外摩擦磨損,不僅具有(you)十分重(zhong)要的(de)理論研究(jiu)價值,而且(qie)對(dui)于帶式輸(shu)送(song)機轉彎(wan)裝置(zhi)的(de)改進(jin)具有(you)至關(guan)重(zhong)要的(de)作(zuo)用。

3新型轉向滾筒設計方案

通過對目前國內外眾多轉向(xiang)滾(gun)筒(tong)設計方案優缺點的(de)分(fen)析和比(bi)較,筆者對轉向(xiang)滾(gun)筒(tong)進行了優化設計,彌補了目前所(suo)使用的(de)轉向(xiang)滾(gun)筒(tong)存(cun)在的(de)輸送帶應力不均,以及(ji)無法(fa)實現同套設備(bei)適(shi)用多種工作(zuo)轉彎(wan)角度的(de)不足。

轉(zhuan)(zhuan)向(xiang)(xiang)滾(gun)筒(tong)(tong)(tong)(tong)整體由兩(liang)端的(de)(de)軸架支(zhi)承安(an)裝(zhuang)(zhuang)(zhuang),固定心(xin)(xin)軸兩(liang)端安(an)裝(zhuang)(zhuang)(zhuang)在(zai)(zai)軸架上,兩(liang)者無相(xiang)對轉(zhuan)(zhuan)動(dong)。轉(zhuan)(zhuan)動(dong)滾(gun)筒(tong)(tong)(tong)(tong)通過支(zhi)承件與心(xin)(xin)軸同心(xin)(xin)安(an)裝(zhuang)(zhuang)(zhuang),相(xiang)對于(yu)心(xin)(xin)軸軸向(xiang)(xiang)固定,但圓周(zhou)方向(xiang)(xiang)可靈活轉(zhuan)(zhuan)動(dong)。在(zai)(zai)轉(zhuan)(zhuan)動(dong)滾(gun)筒(tong)(tong)(tong)(tong)中部,轉(zhuan)(zhuan)動(dong)滾(gun)筒(tong)(tong)(tong)(tong)和(he)心(xin)(xin)軸之間同心(xin)(xin)安(an)裝(zhuang)(zhuang)(zhuang)有(you)(you)空(kong)心(xin)(xin)圓柱(zhu)凸輪(lun)。空(kong)心(xin)(xin)圓柱(zhu)凸輪(lun)相(xiang)對于(yu)心(xin)(xin)軸固定,在(zai)(zai)其圓周(zhou)本(ben)體上根據(ju)不同的(de)(de)轉(zhuan)(zhuan)彎角(jiao)度(du)要求,加工有(you)(you)一道斜(xie)向(xiang)(xiang)閉環(huan)凸輪(lun)槽。在(zai)(zai)轉(zhuan)(zhuan)動(dong)滾(gun)筒(tong)(tong)(tong)(tong)外表(biao)面.按圓周(zhou)方向(xiang)(xiang)均布多條(tiao)與心(xin)(xin)軸平行的(de)(de)導(dao)軌(gui),導(dao)軌(gui)底部開設有(you)(you)狹(xia)(xia)長(chang)的(de)(de)窄縫;在(zai)(zai)轉(zhuan)(zhuan)動(dong)滾(gun)筒(tong)(tong)(tong)(tong)筒(tong)(tong)(tong)(tong)體上開設有(you)(you)與表(biao)面固定導(dao)軌(gui)位置(zhi)、數量(liang)和(he)尺寸一致(zhi)的(de)(de)狹(xia)(xia)長(chang)窗口,狹(xia)(xia)長(chang)

窗(chuang)口的(de)(de)長(chang)度(du)方向平行于心(xin)軸(zhou)軸(zhou)線。輸送(song)(song)帶(dai)(dai)支(zhi)承(cheng)件(jian)和導(dao)軌配合(he)安裝,支(zhi)承(cheng)件(jian)依次穿(chuan)過(guo)導(dao)軌底部(bu)的(de)(de)狹縫、轉動(dong)滾(gun)(gun)筒筒體的(de)(de)狹長(chang)窗(chuang)口到達空心(xin)圓(yuan)柱凸輪(lun),與凸輪(lun)槽內(nei)的(de)(de)推動(dong)件(jian)連接。在輸送(song)(song)帶(dai)(dai)支(zhi)承(cheng)件(jian)的(de)(de)下部(bu)安裝有一根滾(gun)(gun)輪(lun)軸(zhou),在滾(gun)(gun)輪(lun)軸(zhou)的(de)(de)兩(liang)端分別安裝—個轉動(dong)靈活(huo)的(de)(de)小滾(gun)(gun)輪(lun),滾(gun)(gun)輪(lun)在軌道內(nei)自(zi)由活(huo)動(dong)。

為了增加輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)支(zhi)(zhi)承(cheng)(cheng)件(jian)(jian)(jian)表(biao)面(mian)與輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)之(zhi)間的(de)摩擦力(li).在(zai)輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)支(zhi)(zhi)承(cheng)(cheng)件(jian)(jian)(jian)的(de)表(biao)面(mian)設(she)置一(yi)(yi)定厚度的(de)橡膠層。當輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)壓覆在(zai)輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)支(zhi)(zhi)承(cheng)(cheng)件(jian)(jian)(jian)表(biao)面(mian)運(yun)(yun)動(dong)(dong)時(shi),其與輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)支(zhi)(zhi)承(cheng)(cheng)件(jian)(jian)(jian)之(zhi)間的(de)摩擦力(li)帶(dai)(dai)(dai)(dai)(dai)(dai)動(dong)(dong)輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)支(zhi)(zhi)承(cheng)(cheng)件(jian)(jian)(jian)、導軌(gui)和(he)轉(zhuan)動(dong)(dong)滾(gun)筒—起轉(zhuan)動(dong)(dong),如(ru)圖5所示。輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)支(zhi)(zhi)承(cheng)(cheng)件(jian)(jian)(jian)在(zai)繞轉(zhuan)動(dong)(dong)滾(gun)筒軸線做(zuo)回轉(zhuan)運(yun)(yun)動(dong)(dong)的(de)同時(shi),由于(yu)空心圓柱凸輪的(de)作用,其還沿導軌(gui)在(zai)平(ping)行(xing)于(yu)轉(zhuan)動(dong)(dong)滾(gun)筒軸線的(de)方向按預定規律做(zuo)直(zhi)線往(wang)復運(yun)(yun)動(dong)(dong),這樣,輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)支(zhi)(zhi)承(cheng)(cheng)件(jian)(jian)(jian)的(de)運(yun)(yun)動(dong)(dong)為兩種運(yun)(yun)動(dong)(dong)合成(cheng)的(de)周(zhou)期螺(luo)(luo)旋(xuan)(xuan)運(yun)(yun)動(dong)(dong)。在(zai)每個(ge)運(yun)(yun)動(dong)(dong)周(zhou)期,輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)支(zhi)(zhi)承(cheng)(cheng)件(jian)(jian)(jian)的(de)螺(luo)(luo)旋(xuan)(xuan)運(yun)(yun)動(dong)(dong)分為兩個(ge)階(jie)段(duan):當和(he)輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)接觸時(shi),其螺(luo)(luo)旋(xuan)(xuan)運(yun)(yun)動(dong)(dong)和(he)輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)的(de)螺(luo)(luo)旋(xuan)(xuan)運(yun)(yun)動(dong)(dong)完全一(yi)(yi)致,所以,輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)支(zhi)(zhi)承(cheng)(cheng)件(jian)(jian)(jian)和(he)輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)之(zhi)間相(xiang)對速度為零,從而避(bi)免了對輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)的(de)摩擦損(sun)傷(shang);脫離輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)后,輸(shu)(shu)(shu)(shu)(shu)(shu)送(song)(song)(song)(song)(song)帶(dai)(dai)(dai)(dai)(dai)(dai)支(zhi)(zhi)承(cheng)(cheng)件(jian)(jian)(jian)做(zuo)另一(yi)(yi)段(duan)返程螺(luo)(luo)旋(xuan)(xuan)運(yun)(yun)動(dong)(dong),返回原來(lai)位置進入下一(yi)(yi)個(ge)運(yun)(yun)動(dong)(dong)周(zhou)期。

輸送帶(dai)在轉(zhuan)向滾筒上(shang)的(de)(de)螺(luo)(luo)旋(xuan)運(yun)動(dong)參數是由輸送機轉(zhuan)彎角(jiao)度決定的(de)(de),而輸送帶(dai)支承(cheng)件的(de)(de)合成螺(luo)(luo)旋(xuan)運(yun)動(dong)參數可(ke)通過空心圓柱凸輪(lun)的(de)(de)凸輪(lun)曲(qu)面(mian)參數來(lai)調整。所以,當輸送機轉(zhuan)彎角(jiao)度變化時,只需改變凸輪(lun)曲(qu)面(mian)的(de)(de)參數,即可(ke)使輸送帶(dai)支承(cheng)件的(de)(de)合成螺(luo)(luo)旋(xuan)運(yun)動(dong)參數適(shi)應新(xin)的(de)(de)輸送機轉(zhuan)彎角(jiao)度,這使得本設計方案可(ke)適(shi)用多種(zhong)轉(zhuan)彎角(jiao)度。

4結語

本方(fang)(fang)案所(suo)設計的轉(zhuan)向(xiang)滾筒裝置,其輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)支承件(jian)沿(yan)輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)寬度(du)方(fang)(fang)向(xiang)均(jun)勻(yun)地支承輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai),單從支承輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)方(fang)(fang)面(mian)來說(shuo),和普通平(ping)(ping)形(xing)直(zhi)(zhi)托(tuo)輥相同,所(suo)以(yi)(yi)輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)受力更均(jun)勻(yun),徹底解決(jue)了(le)多(duo)個小托(tuo)輥帶(dai)(dai)(dai)來的輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)局部應(ying)力過(guo)大(da)的問(wen)題(ti)(ti),也可避免(mian)劃傷輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)。正常工作(zuo)時,輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)支承件(jian)一(yi)方(fang)(fang)面(mian)繞轉(zhuan)動(dong)滾筒軸線做(zuo)回轉(zhuan)運(yun)動(dong),另一(yi)方(fang)(fang)面(mian)在空(kong)心(xin)圓(yuan)柱(zhu)凸輪作(zuo)用(yong)下,按(an)照預定規律沿(yan)導(dao)軌在平(ping)(ping)行于轉(zhuan)動(dong)滾筒軸線的方(fang)(fang)向(xiang)做(zuo)直(zhi)(zhi)線運(yun)動(dong),即(ji)輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)支承件(jian)的運(yun)動(dong)為兩種運(yun)動(dong)合成的、和輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)運(yun)動(dong)完全一(yi)致的螺旋運(yun)動(dong)。所(suo)以(yi)(yi),輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)支承件(jian)和輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)之間沒(mei)有相對運(yun)動(dong),從而(er)避免(mian)了(le)對輸(shu)(shu)(shu)送(song)(song)(song)(song)帶(dai)(dai)(dai)的摩(mo)擦損傷。另外(wai),通過(guo)簡單地改(gai)變空(kong)心(xin)圓(yuan)柱(zhu)凸輪的凸輪曲(qu)面(mian)參數(shu),即(ji)可使(shi)一(yi)套轉(zhuan)向(xiang)裝置適應(ying)多(duo)種轉(zhuan)彎角度(du),在很大(da)程度(du)上解決(jue)了(le)設備不可重復利用(yong)的問(wen)題(ti)(ti)。