電梯稱重裝置有什么作(zuo)用?

在(zai)(zai)較(jiao)(jiao)簡單(dan)的調(diao)速電(dian)梯(ti)上(shang)還加(jia)裝(zhuang)(zhuang)一個(ge)50％額定載(zai)(zai)(zai)荷(he)的開(kai)(kai)關(guan)，以判斷電(dian)梯(ti)是重(zhong)(zhong)荷(he)運(yun)(yun)行(xing)還是輕(qing)荷(he)運(yun)(yun)行(xing)。在(zai)(zai)重(zhong)(zhong)荷(he)運(yun)(yun)行(xing)啟(qi)動時給(gei)電(dian)機輸(shu)入一個(ge)預(yu)負(fu)載(zai)(zai)(zai)電(dian)流，以避(bi)免啟(qi)動時發生轎廂(xiang)瞬間下滑或(huo)上(shang)滑的現象(xiang)。目前根據需(xu)要(yao)也(ye)有(you)(you)設多個(ge)開(kai)(kai)關(guan)，電(dian)梯(ti)稱重(zhong)(zhong)傳(chuan)感器，以發出(chu)輕(qing)載(zai)(zai)(zai)、半載(zai)(zai)(zai)、滿載(zai)(zai)(zai)、超載(zai)(zai)(zai)等多個(ge)檢(jian)出(chu)信號(hao)以供拖(tuo)動控(kong)制和其他需(xu)要(yao)。隨著控(kong)制精(jing)度要(yao)求的提高，尤其控(kong)電(dian)梯(ti)還需(xu)要(yao)有(you)(you)轎廂(xiang)內負(fu)荷(he)的實(shi)時信息用(yong)(yong)于調(diao)度，現在(zai)(zai)較(jiao)(jiao)好的電(dian)梯(ti)都使用(yong)(yong)了隨負(fu)載(zai)(zai)(zai)變化發出(chu)連續信號(hao)的重(zhong)(zhong)量傳(chuan)感裝(zhuang)(zhuang)置(zhi)。傳(chuan)感器發出(chu)的信號(hao)經(jing)放大調(diao)零后，經(jing)比(bi)較(jiao)(jiao)器可輸(shu)出(chu)各種載(zai)(zai)(zai)荷(he)信號(hao)供控(kong)制系統使用(yong)(yong)。

電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)重(zhong)(zhong)(zhong)(zhong)量平衡系統的(de)作用是使對(dui)重(zhong)(zhong)(zhong)(zhong)與空(kong)載轎(jiao)廂的(de)重(zhong)(zhong)(zhong)(zhong)量差達到國家規定的(de)范圍(wei)之(zhi)內(nei)（即(ji)電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)的(de)平衡系數(shu)在(zai)0.4～0.5之(zhi)間，或依據(ju)制造廠家的(de)規定重(zhong)(zhong)(zhong)(zhong)量），江蘇電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)稱(cheng)重(zhong)(zhong)(zhong)(zhong)開關，使得運行(xing)中(zhong)的(de)電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)即(ji)使轎(jiao)廂載荷重(zhong)(zhong)(zhong)(zhong)量不斷變化，仍(reng)能使對(dui)重(zhong)(zhong)(zhong)(zhong)與轎(jiao)廂之(zhi)間的(de)重(zhong)(zhong)(zhong)(zhong)量差仍(reng)保持在(zai)一定范圍(wei)之(zhi)內(nei)，也就解決了(le)電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)正反(fan)轉大輸出轉矩接近一致的(de)問題，利于(yu)選擇小電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)曳引(yin)電(dian)(dian)(dian)(dian)(dian)機的(de)額定功率(lv)，電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)稱(cheng)重(zhong)(zhong)(zhong)(zhong)開關多少錢，完成電(dian)(dian)(dian)(dian)(dian)梯(ti)(ti)(ti)(ti)的(de)正常、穩定運行(xing)。

用(yong)作稱重傳感器彈(dan)(dan)性(xing)(xing)(xing)體(ti)的金屬(shu)材(cai)料，由于(yu)其內部(bu)結構之間(jian)的復(fu)合(he)組織時(shi)，受(shou)到外(wai)力(li)時(shi)產生的輕微的微應變(bian)的晶粒之間(jian)，外(wai)力(li)消(xiao)失后(hou)，微應變(bian)消(xiao)失，但是否完全恢復(fu)到原來的狀態不加電(dian)，由于(yu)彈(dan)(dan)性(xing)(xing)(xing)體(ti)的金屬(shu)材(cai)料有(you)所(suo)不同。如果(guo)力(li)曲線的裝載和卸載的力(li)曲線不重疊，差就(jiu)越大(da)，電(dian)梯稱重開(kai)關價(jia)格，更(geng)大(da)的滯后(hou)。主(zhu)要來自材(cai)料本(ben)身(shen)的熱處(chu)(chu)(chu)理后(hou)的組合(he)物，均(jun)勻性(xing)(xing)(xing)，徑向基，等穩定(ding)性(xing)(xing)(xing)的差異。了解(jie)滯后(hou)的原因，我們可以(yi)選擇適當的金屬(shu)材(cai)料，采用(yong)的熱處(chu)(chu)(chu)理來提高彈(dan)(dan)性(xing)(xing)(xing)極限，以(yi)減少產生滯后(hou)。廣泛用(yong)于(yu)上(shang)的彈(dan)(dan)性(xing)(xing)(xing)材(cai)料40CrNiMoA材(cai)質(zhi)，通過(guo)(guo)熱處(chu)(chu)(chu)理過(guo)(guo)程中可以(yi)實現合(he)理的良好的綜(zong)合(he)力(li)學性(xing)(xing)(xing)能。