具體參數

隨著現代工(gong)(gong)業的(de)興(xing)起，以混(hun)凝(ning)土(tu)為主材料的(de)建設(she)方式已經(jing)成為了(le)建筑(zhu)業施工(gong)(gong)的(de)主要(yao)構造之一(yi)，在各(ge)種(zhong)工(gong)(gong)程施工(gong)(gong)建設(she)中占據了(le)很大的(de)比例，使得混(hun)凝(ning)土(tu)機(ji)械的(de)發展(zhan)經(jing)久不(bu)衰(shuai)，且(qie)有越(yue)演越(yue)烈的(de)形勢。拖式混(hun)凝(ning)土(tu)泵(beng)，簡稱拖泵(beng)，是各(ge)種(zhong)混(hun)凝(ning)土(tu)機(ji)械中的(de)一(yi)種(zhong)，用于(yu)混(hun)凝(ning)土(tu)施工(gong)(gong)中的(de)輸送和澆注工(gong)(gong)作。

拖泵分類選(xuan)型

37千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)（目前國內標準混凝(ning)土(tu)泵，37千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)以下為(wei)細石砂漿泵）、45千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)、55千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)、75千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)、90千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)、110千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)、130千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)（柴油）、132千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)、162千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)（柴油）、174千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)（柴油）等(deng)。

選擇多大(da)電機混(hun)凝土(tu)(tu)泵，首先要(yao)考慮變壓(ya)器容量(liang)，其次考慮距(ju)離混(hun)凝土(tu)(tu)泵的遠近(jin)和線徑大(da)小(xiao)，以免壓(ya)降(jiang)過大(da)造成電流增高或跳閘停機，過大(da)功率造成成本增加和使用不(bu)便。電機過小(xiao)，同(tong)時也滿足不(bu)了工(gong)程需要(yao)。

混(hun)凝土(tu)輸(shu)(shu)(shu)送(song)泵功率、混(hun)凝土(tu)輸(shu)(shu)(shu)送(song)泵出口壓力、混(hun)凝土(tu)輸(shu)(shu)(shu)送(song)泵輸(shu)(shu)(shu)送(song)量之間的關系

一(yi)臺混凝土輸送(song)(song)(song)泵的(de)電機功率是(shi)決定出口(kou)壓力和(he)輸送(song)(song)(song)方量(liang)的(de)前(qian)提條件，在電機功率一(yi)定的(de)情況下(xia)，壓力的(de)升高必將(jiang)使輸送(song)(song)(song)量(liang)降低；相反(fan)，降低出口(kou)壓力，將(jiang)會(hui)使輸送(song)(song)(song)量(liang)增加。

為了保證混凝土輸送(song)泵(beng)(beng)既要有(you)(you)較(jiao)大(da)輸送(song)量，又能有(you)(you)一定(ding)(ding)的出(chu)口(kou)壓力和與之(zhi)相匹配的經濟功(gong)(gong)(gong)率(lv)，在混凝土輸送(song)泵(beng)(beng)的設(she)計(ji)中，大(da)都(dou)采用(yong)了恒功(gong)(gong)(gong)率(lv)柱塞泵(beng)(beng)；即恒功(gong)(gong)(gong)率(lv)值選定(ding)(ding)后，當出(chu)口(kou)壓力升高時，油泵(beng)(beng)輸出(chu)排量會自動(dong)降低，達(da)(da)到(dao)(dao)與功(gong)(gong)(gong)率(lv)設(she)計(ji)相對(dui)應的值；如果既要達(da)(da)到(dao)(dao)出(chu)口(kou)壓力高，又想(xiang)得到(dao)(dao)輸送(song)量大(da)的目的。惟(wei)一的途徑就是(shi)增加電機功(gong)(gong)(gong)率(lv)。

因(yin)此，在國(guo)家新(xin)標準(zhun)中(zhong)，引(yin)用了混凝(ning)土(tu)輸(shu)送泵的(de)(de)能(neng)力指數(shu)概(gai)念(nian)（以(yi)MPa·m3/h為(wei)度量(liang)單位(wei)）；即混凝(ning)土(tu)輸(shu)送泵的(de)(de)實際出口壓(ya)力與每小時實際輸(shu)送量(liang)之(zhi)乘積(ji)，該值(zhi)越(yue)(yue)大(da)，其能(neng)力指數(shu)也越(yue)(yue)大(da)，電(dian)機的(de)(de)功率(lv)也將越(yue)(yue)大(da)，由此實現大(da)排量(liang)、高(gao)揚程的(de)(de)目的(de)(de)。科尼樂公(gong)司在設計時，還(huan)采(cai)用了高(gao)低壓(ya)切換的(de)(de)功能(neng)設計，以(yi)滿(man)足不同的(de)(de)施工要求，在經濟狀態(tai)下，又能(neng)產生較大(da)的(de)(de)輸(shu)送量(liang)，或者以(yi)相同的(de)(de)電(dian)機功率(lv)，產生較高(gao)的(de)(de)出口壓(ya)力。