具體參數

隨著現代工(gong)(gong)(gong)業的(de)(de)興起，以混(hun)(hun)凝(ning)土(tu)(tu)(tu)為主材料的(de)(de)建設方式已經(jing)成(cheng)為了建筑(zhu)業施工(gong)(gong)(gong)的(de)(de)主要(yao)構(gou)造之一，在(zai)各種(zhong)工(gong)(gong)(gong)程施工(gong)(gong)(gong)建設中占據了很大的(de)(de)比(bi)例，使得混(hun)(hun)凝(ning)土(tu)(tu)(tu)機械的(de)(de)發展經(jing)久不衰(shuai)，且有越演越烈的(de)(de)形勢。拖式混(hun)(hun)凝(ning)土(tu)(tu)(tu)泵，簡稱拖泵，是(shi)各種(zhong)混(hun)(hun)凝(ning)土(tu)(tu)(tu)機械中的(de)(de)一種(zhong)，用于混(hun)(hun)凝(ning)土(tu)(tu)(tu)施工(gong)(gong)(gong)中的(de)(de)輸(shu)送和澆注(zhu)工(gong)(gong)(gong)作。

拖泵分類選型(xing)

37千(qian)(qian)瓦(wa)(wa)(wa)（目前國內標準混凝土(tu)泵(beng)，37千(qian)(qian)瓦(wa)(wa)(wa)以下為細石砂漿泵(beng)）、45千(qian)(qian)瓦(wa)(wa)(wa)、55千(qian)(qian)瓦(wa)(wa)(wa)、75千(qian)(qian)瓦(wa)(wa)(wa)、90千(qian)(qian)瓦(wa)(wa)(wa)、110千(qian)(qian)瓦(wa)(wa)(wa)、130千(qian)(qian)瓦(wa)(wa)(wa)（柴(chai)油(you)）、132千(qian)(qian)瓦(wa)(wa)(wa)、162千(qian)(qian)瓦(wa)(wa)(wa)（柴(chai)油(you)）、174千(qian)(qian)瓦(wa)(wa)(wa)（柴(chai)油(you)）等。

選擇(ze)多(duo)大電機混(hun)凝土泵，首(shou)先要考慮變壓器容量(liang)，其次考慮距離(li)混(hun)凝土泵的遠(yuan)近和線(xian)徑大小，以(yi)免壓降過大造成電流增(zeng)高或跳(tiao)閘停(ting)機，過大功率(lv)造成成本增(zeng)加(jia)和使用不(bu)(bu)便(bian)。電機過小，同(tong)時(shi)也滿足不(bu)(bu)了工程需要。

混(hun)凝(ning)土輸(shu)(shu)送(song)(song)(song)泵(beng)功率、混(hun)凝(ning)土輸(shu)(shu)送(song)(song)(song)泵(beng)出口壓力(li)、混(hun)凝(ning)土輸(shu)(shu)送(song)(song)(song)泵(beng)輸(shu)(shu)送(song)(song)(song)量(liang)之間的關系

一(yi)臺混凝土(tu)輸(shu)送泵的電(dian)機功(gong)率是決定出口壓(ya)力和輸(shu)送方(fang)量的前(qian)提(ti)條件，在電(dian)機功(gong)率一(yi)定的情況下，壓(ya)力的升高必將使(shi)(shi)輸(shu)送量降低(di)；相反，降低(di)出口壓(ya)力，將會使(shi)(shi)輸(shu)送量增加。

為(wei)了(le)保證混(hun)(hun)凝土輸(shu)送(song)泵(beng)(beng)既要有較大輸(shu)送(song)量，又能(neng)有一(yi)定的(de)出口壓(ya)力和(he)與(yu)之相匹配的(de)經(jing)濟功(gong)(gong)(gong)率，在(zai)混(hun)(hun)凝土輸(shu)送(song)泵(beng)(beng)的(de)設(she)計中，大都采(cai)用了(le)恒(heng)功(gong)(gong)(gong)率柱塞(sai)泵(beng)(beng)；即(ji)恒(heng)功(gong)(gong)(gong)率值(zhi)選(xuan)定后，當出口壓(ya)力升高時，油泵(beng)(beng)輸(shu)出排量會自動降低，達到(dao)(dao)與(yu)功(gong)(gong)(gong)率設(she)計相對應的(de)值(zhi)；如果既要達到(dao)(dao)出口壓(ya)力高，又想(xiang)得到(dao)(dao)輸(shu)送(song)量大的(de)目的(de)。惟(wei)一(yi)的(de)途徑就是(shi)增加電機(ji)功(gong)(gong)(gong)率。

因此，在(zai)國家新標準中，引用(yong)了混凝(ning)土輸(shu)送(song)(song)泵的(de)(de)能力(li)指數概(gai)念（以MPa·m3/h為度量(liang)單位）；即混凝(ning)土輸(shu)送(song)(song)泵的(de)(de)實際(ji)出(chu)口壓(ya)力(li)與(yu)每(mei)小(xiao)時(shi)實際(ji)輸(shu)送(song)(song)量(liang)之乘(cheng)積(ji)，該值越大，其能力(li)指數也越大，電機的(de)(de)功(gong)率(lv)(lv)也將越大，由(you)此實現大排量(liang)、高(gao)(gao)(gao)揚程的(de)(de)目的(de)(de)。科(ke)尼樂(le)公(gong)司在(zai)設(she)計時(shi)，還采用(yong)了高(gao)(gao)(gao)低(di)壓(ya)切(qie)換的(de)(de)功(gong)能設(she)計，以滿足不(bu)同(tong)(tong)的(de)(de)施工要(yao)求，在(zai)經濟(ji)狀(zhuang)態下，又(you)能產生較(jiao)大的(de)(de)輸(shu)送(song)(song)量(liang)，或者以相同(tong)(tong)的(de)(de)電機功(gong)率(lv)(lv)，產生較(jiao)高(gao)(gao)(gao)的(de)(de)出(chu)口壓(ya)力(li)。