具(ju)體參數

隨著現代工(gong)(gong)(gong)業的(de)(de)興起，以混(hun)(hun)凝土(tu)(tu)為主材(cai)料的(de)(de)建(jian)設方式已經成(cheng)為了建(jian)筑業施(shi)(shi)工(gong)(gong)(gong)的(de)(de)主要構造之一(yi)，在各種(zhong)工(gong)(gong)(gong)程施(shi)(shi)工(gong)(gong)(gong)建(jian)設中占據了很大的(de)(de)比例，使得混(hun)(hun)凝土(tu)(tu)機械(xie)(xie)的(de)(de)發展經久不衰，且有越(yue)演(yan)越(yue)烈的(de)(de)形(xing)勢。拖式混(hun)(hun)凝土(tu)(tu)泵(beng)，簡稱拖泵(beng)，是(shi)各種(zhong)混(hun)(hun)凝土(tu)(tu)機械(xie)(xie)中的(de)(de)一(yi)種(zhong)，用于混(hun)(hun)凝土(tu)(tu)施(shi)(shi)工(gong)(gong)(gong)中的(de)(de)輸(shu)送和澆注工(gong)(gong)(gong)作。

拖泵分類(lei)選型

37千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)(wa)（目前(qian)國內標(biao)準混(hun)凝(ning)土泵，37千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)(wa)以下為細石砂漿泵）、45千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)(wa)、55千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)(wa)、75千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)(wa)、90千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)(wa)、110千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)(wa)、130千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)(wa)（柴(chai)(chai)油(you)(you)）、132千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)(wa)、162千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)(wa)（柴(chai)(chai)油(you)(you)）、174千(qian)(qian)(qian)(qian)(qian)瓦(wa)(wa)(wa)（柴(chai)(chai)油(you)(you)）等。

選擇多大(da)(da)(da)電(dian)機(ji)混凝土泵(beng)，首(shou)先要考慮(lv)變(bian)壓(ya)器容量(liang)，其(qi)次考慮(lv)距離混凝土泵(beng)的遠近和(he)線徑大(da)(da)(da)小(xiao)(xiao)，以免壓(ya)降過(guo)大(da)(da)(da)造(zao)成(cheng)電(dian)流增高或(huo)跳閘停機(ji)，過(guo)大(da)(da)(da)功(gong)率造(zao)成(cheng)成(cheng)本(ben)增加和(he)使用(yong)不便。電(dian)機(ji)過(guo)小(xiao)(xiao)，同時也滿足不了工程(cheng)需要。

混(hun)凝土(tu)(tu)輸(shu)送(song)(song)泵(beng)功率、混(hun)凝土(tu)(tu)輸(shu)送(song)(song)泵(beng)出口壓(ya)力、混(hun)凝土(tu)(tu)輸(shu)送(song)(song)泵(beng)輸(shu)送(song)(song)量之間的關系

一臺混凝土輸(shu)送(song)泵的電機功(gong)率是決定(ding)出口壓力和輸(shu)送(song)方量的前提條件(jian)，在電機功(gong)率一定(ding)的情況下，壓力的升高必將(jiang)使(shi)輸(shu)送(song)量降低；相(xiang)反，降低出口壓力，將(jiang)會使(shi)輸(shu)送(song)量增加。

為了保證混(hun)凝土輸(shu)(shu)(shu)送泵既(ji)(ji)要(yao)有(you)較(jiao)大輸(shu)(shu)(shu)送量(liang)，又能有(you)一定的(de)出口壓(ya)力(li)和(he)與之相匹配的(de)經濟功(gong)率(lv)，在(zai)混(hun)凝土輸(shu)(shu)(shu)送泵的(de)設計中，大都采用了恒功(gong)率(lv)柱塞泵；即恒功(gong)率(lv)值(zhi)選定后，當出口壓(ya)力(li)升高時，油泵輸(shu)(shu)(shu)出排量(liang)會自動降低，達(da)(da)到與功(gong)率(lv)設計相對應的(de)值(zhi)；如果既(ji)(ji)要(yao)達(da)(da)到出口壓(ya)力(li)高，又想得(de)到輸(shu)(shu)(shu)送量(liang)大的(de)目(mu)的(de)。惟一的(de)途徑就是增加電機功(gong)率(lv)。

因此，在國家(jia)新標準中(zhong)，引(yin)用了混凝土(tu)(tu)輸(shu)送(song)泵(beng)的能力(li)指(zhi)數(shu)概念（以(yi)MPa·m3/h為度量單位）；即混凝土(tu)(tu)輸(shu)送(song)泵(beng)的實際出口壓力(li)與每小時實際輸(shu)送(song)量之乘積(ji)，該(gai)值越大(da)(da)，其能力(li)指(zhi)數(shu)也(ye)越大(da)(da)，電機的功率(lv)也(ye)將越大(da)(da)，由此實現大(da)(da)排量、高(gao)(gao)揚程的目的。科尼樂(le)公司在設計(ji)時，還采用了高(gao)(gao)低壓切換的功能設計(ji)，以(yi)滿足(zu)不(bu)同(tong)的施工要(yao)求，在經濟(ji)狀態下，又能產生較(jiao)大(da)(da)的輸(shu)送(song)量，或者以(yi)相同(tong)的電機功率(lv)，產生較(jiao)高(gao)(gao)的出口壓力(li)。