混凝土攪拌站計量誤差影響因素及控製

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1混凝土拌和站計量差錯概述

計量作為決議混凝土計量精度高低的根底設備，當前我國絕大部分的混凝土拌和站使用的計量設備為電子秤，其首要是憑借拉(壓)shichuanganqiduizongliangjinxingceliangde。jiliangshi，wuliaodefenliangbeishijiazaichuanganqishang
，jingguochuanganqiyingbianpiandebianxingdaozhidianzudejuxichanshenggaidong，jingguodianqiaoshizhuanbianchengdianyaxinhaoshuchu，bingjingguofangdahezhuanhua
，zhongjiuyifenliangxinhaodefangfaxianshi。erjiliangchacuoshouyaozhideshiyibiaohuoxudiannaojiliangdejieguoyuwutideshizaifenliangzhijiandechazhi。zaihunningtubanhezhanjiliangguochengzhong
，jiliangchacuobirancunzai，keshinenggoucainayouyongdecaokongcuoshixuejianchacuo
，shijieguodaodaguobiaoyunxudeguimonei。

依據《混凝土拌和站(樓)》(GB/T1071—2005)國家規範要求：骨料稱量的精度為±1%
，水精度為±1%
，水泥為±1%
，摻介料為±1%。在zai保bao證zheng設she計ji合he理li的de前qian提ti下xia，當dang計ji量liang設she備bei處chu於yu靜jing態tai時shi上shang述shu的de規gui則ze的de計ji量liang精jing度du簡jian單dan到dao達da，可ke是shi在zai混hun凝ning土tu拌ban和he站zhan實shi踐jian運yun轉zhuan中zhong，在zai物wu料liao的de衝chong擊ji下xia
，導dao致zhi料liao流liu不bu穩wen定ding，再zai加jia上shang機ji械xie振zhen動dong等deng要yao素su，在zai詳xiang細xi使shi用yong過guo程cheng中zhong要yao想xiang下xia降jiang計ji量liang差cha錯cuo難nan度du較jiao高gao。

2混凝土拌和站計量體係作業原理及操控方法

混凝土拌和站計量操控體係常見的有3類：①工控機合作智能配料儀表合作可編程操控器(PLC);②工控機合作智能板卡;③工控機合作單片機。其中工控機是指揮中心，在各類拌和軟件的輔佐下完成人機交互

，而單片機和PLC則是操控中心，其首要功用是接受指令並對部件的運轉運作予以操控。

電子計量由銜接電纜
、傳感器、放大器

、接線盒、A/D轉化、稱(cheng)重(zhong)終(zhong)端(duan)等(deng)部(bu)分(fen)構(gou)成(cheng)。其(qi)中(zhong)傳(chuan)感(gan)器(qi)是(shi)將(jiang)電(dian)阻(zu)應(ying)變(bian)片(pian)改(gai)變(bian)的(de)電(dian)阻(zu)轉(zhuan)變(bian)成(cheng)電(dian)壓(ya)輸(shu)出(chu)，經(jing)過(guo)對(dui)接(jie)線(xian)盒(he)的(de)電(dian)位(wei)器(qi)進(jin)行(xing)調(tiao)節(jie)，堅(jian)持(chi)整(zheng)個(ge)秤(cheng)體(ti)的(de)平(ping)衡(heng)。由(you)於(yu)傳(chuan)感(gan)器(qi)輸(shu)出(chu)的(de)電(dian)壓(ya)信(xin)號(hao)的(de)等(deng)級(ji)為(wei)mV
，經過放大器放大信號。在A/D轉化器的效果下
，將檢測到的電流信號或許電壓信號轉變成能夠被計算機辨認的數字量。機械計量的組成部分包括氣缸、螺旋運送器、蝶閥

、電(dian)機(ji)等(deng)，然(ran)後(hou)完(wan)結(jie)稱(cheng)料(liao)和(he)卸(xie)料(liao)操(cao)作(zuo)。拌(ban)和(he)操(cao)控(kong)程(cheng)序(xu)為(wei)了(le)縮(suo)短(duan)計(ji)量(liang)所(suo)需(xu)時(shi)間(jian)，進(jin)步(bu)計(ji)量(liang)的(de)精(jing)度(du)，通(tong)常(chang)在(zai)計(ji)量(liang)原(yuan)資(zi)料(liao)時(shi)需(xu)求(qiu)經(jing)過(guo)衝(chong)量(liang)調(tiao)整(zheng)先(xian)展(zhan)開(kai)粗(cu)稱(cheng)
，粗(cu)稱(cheng)至(zhi)必(bi)定(ding)規(gui)模(mo)後(hou)再(zai)精(jing)確(que)計(ji)量(liang)，首(shou)要(yao)是(shi)保(bao)證(zheng)計(ji)量(liang)差(cha)錯(cuo)的(de)可(ke)控(kong)性(xing)。在(zai)投(tou)料(liao)時(shi)運(yun)用(yong)主(zhu)動(dong)扣(kou)秤(cheng)將(jiang)每(mei)盤(pan)計(ji)量(liang)差(cha)錯(cuo)操(cao)控(kong)在(zai)最(zui)低(di)規(gui)模(mo)中(zhong)，整(zheng)車(che)混(hun)凝(ning)土(tu)盤(pan)次(ci)之(zhi)間(jian)履(lv)行(xing)差(cha)錯(cuo)主(zhu)動(dong)補(bu)償(chang)，以(yi)此(ci)來(lai)縮(suo)小(xiao)整(zheng)個(ge)車(che)的(de)動(dong)態(tai)差(cha)錯(cuo);先經過電路操控螺旋運送器將粉料先粗稱，然後再經過點動的方法完成精確計量;而骨料則是經過氣路對氣缸進行操控，將其全開完結粗稱後再開一半進行精確計量;而水劑則是經過氣路對電路操控電機或許蝶閥進行操控
，將其全開完結粗稱後再開小閥或許點動的方法到達精確計量的目的。

3混凝土拌和站計量差錯影響要素

3.1落料差錯

在(zai)混(hun)凝(ning)土(tu)拌(ban)和(he)站(zhan)配(pei)料(liao)時(shi)，大(da)多(duo)挑(tiao)選(xuan)舉(ju)高(gao)的(de)運(yun)送(song)帶(dai)設(she)備(bei)作(zuo)為(wei)給(gei)料(liao)出(chu)口(kou)，可(ke)是(shi)由(you)於(yu)給(gei)料(liao)出(chu)口(kou)和(he)料(liao)鬥(dou)內(nei)物(wu)料(liao)外(wai)表(biao)之(zhi)間(jian)存(cun)在(zai)一(yi)段(duan)距(ju)離(li)，再(zai)加(jia)上(shang)給(gei)料(liao)機(ji)在(zai)運(yun)轉(zhuan)過(guo)程(cheng)中(zhong)的(de)皮(pi)帶(dai)轉(zhuan)動(dong)或(huo)許(xu)機(ji)械(xie)振(zhen)動(dong)時(shi)存(cun)在(zai)必(bi)定(ding)慣(guan)性(xing)，無(wu)法(fa)當(dang)即(ji)將(jiang)出(chu)料(liao)口(kou)封(feng)閉(bi)，以(yi)至(zhi)於(yu)實(shi)在(zai)供(gong)料(liao)量(liang)和(he)操(cao)作(zuo)室(shi)給(gei)定(ding)的(de)配(pei)料(liao)數(shu)量(liang)存(cun)在(zai)差(cha)異(yi)
，別(bie)的(de)，當(dang)送(song)料(liao)口(kou)與(yu)接(jie)料(liao)漏(lou)鬥(dou)之(zhi)間(jian)的(de)配(pei)料(liao)不(bu)能(neng)當(dang)即(ji)停(ting)止(zhi)時(shi)


，相(xiang)同(tong)也(ye)會(hui)進(jin)入(ru)到(dao)接(jie)料(liao)漏(lou)鬥(dou)中(zhong)，由(you)此(ci)構(gou)成(cheng)的(de)落(luo)料(liao)差(cha)錯(cuo)。

3.2稱量差錯

在zai對dui各ge種zhong配pei料liao進jin行xing稱cheng量liang過guo程cheng中zhong，需xu求qiu稱cheng量liang的de數shu量liang多duo，稱cheng量liang的de時shi間jian十shi分fen短duan，簡jian單dan導dao致zhi稱cheng量liang的de配pei料liao分fen量liang不bu精jing確que。即ji在zai配pei料liao時shi，當dang物wu料liao垂chui直zhi落luo至zhi配pei料liao秤cheng上shang時shi會hui現xian成cheng衝chong擊ji力li

，而er配pei料liao傳chuan感gan器qi則ze會hui將jiang該gai衝chong力li當dang做zuo物wu料liao的de重zhong力li，引yin起qi傳chuan感gan器qi感gan應ying到dao的de物wu料liao分fen量liang信xin號hao存cun在zai差cha錯cuo，導dao致zhi稱cheng量liang差cha錯cuo。假jia如ru傳chuan感gan器qi安an裝zhuang的de位wei置zhi不bu佳jia

、在電路等其他要素的效果下也會導致稱量差錯。

3.3粉料懸浮差錯

密mi度du十shi分fen小xiao的de顆ke粒li狀zhuang物wu體ti稱cheng為wei粉fen料liao，粉fen料liao簡jian單dan懸xuan浮fu在zai空kong氣qi中zhong
，瞬shun間jian下xia降jiang時shi又you會hui引yin起qi秤cheng鬥dou內nei懸xuan浮fu的de狀zhuang況kuang，然ran後hou安an裝zhuang在zai秤cheng鬥dou中zhong的de傳chuan感gan器qi不bu能neng感gan應ying到dao懸xuan浮fu在zai秤cheng鬥dou中zhong物wu料liao的de實shi在zai分fen量liang
，便bian會hui出chu現xian進jin入ru秤cheng鬥dou中zhong的de物wu料liao實shi在zai分fen量liang比bi秤cheng的de讀du數shu要yao大da的de狀zhuang況kuang。

3.4人工差錯

我(wo)國(guo)計(ji)量(liang)單(dan)位(wei)依(yi)然(ran)未(wei)能(neng)到(dao)達(da)十(shi)分(fen)精(jing)確(que)的(de)水(shui)平(ping)，在(zai)混(hun)凝(ning)土(tu)拌(ban)和(he)站(zhan)稱(cheng)量(liang)配(pei)料(liao)時(shi)，一(yi)些(xie)從(cong)事(shi)計(ji)量(liang)作(zuo)業(ye)人(ren)員(yuan)的(de)專(zhuan)業(ye)水(shui)平(ping)有(you)限(xian)，由(you)於(yu)操(cao)作(zuo)不(bu)到(dao)位(wei)影(ying)響(xiang)終(zhong)究(jiu)計(ji)量(liang)結(jie)果(guo)的(de)精(jing)確(que)性(xing)，構(gou)成(cheng)人(ren)工(gong)差(cha)錯(cuo)。

3.5原資料不合格

一些混凝土出產企業為了完成本身經濟效益的最大化
，收購一些質量不合格的原資料來加工混凝土，例如：jizhishazuoweihunningtuzhongbukehuoquedeyileiyuanziliao
，jiarujizhishazhongdehanshuiliangchaozhi，bianhuiduihunningtudejiliangchanshengjiaodadeyingxiang
，suiranzaijinxingchengliangdeshihoujizhishadezhiliangmanyiguifan，keshiqihanliangweidaodaguifan。jiarutiaoxuandejizhishashuifenhanliangguodi
，youhuixiajianghunningtudezhanlianxing
，yingxianghunningtudezhiliang。

4混凝土拌和站計量差錯影響要素操控措施

4.1落料差錯操控措施

混凝土拌和站在使用電子秤之前校稱，在校稱之前保證元器件完好無缺、wumaobing，gegexianluheyuanqijianxianjiezhengqueqielaokao
，chuyuzhengchangdetongxunzhuangkuang。jiaruxiangchengshangzengjiafamashijiarudianzichengxianshideshishuweichanshenggaidong，daozhizhezhongxianxiangdeshouyaoyuanyinkenengshixiaochengchujideneicunquyuzhongdezhichanshengfanchang，ranhouyinqixiaochengdequxianchuxianfanchang。zhenduizhezhongzhuangkuang，shouxianyinggaijiangdianzichengkangfuzhichuchangshezhi，xuqiuzhuyideshizaijinxingchushihuaguochengzhongxuqiuquxiachengdoushangdefama，ranhouyicijiafama


，zhidaojiazhizuidafama，tongchangzaijiafamashiyingzhishaobaozhengbanhezhanchuchanxuqiujiliangdezuidafenliangzhi
，zaixiaochengcaozuoshi
，tiaozhajiazaiguochengzhongquxiangaibianzhuangkuangyijishifoudaodaxianxingyaoqiu，jiarudianzichengdedeshishuchacuochaoyueyunxudeguimoqiebuchuxianxianxinggaibian，yaonongqingyuanyin
，shichuanganqixingnengmaobinghaishijixiemaobing，zaicainaxiangyingdecuoshihouzhongxinxiaocheng。zuihou，zaixiaochengjieshushixiexiachengdoushangdefamashi
，haiyinggaizhuyitiaozhaquxiangaibianshifoufuhexianxingyaoqiu，quanbujiangfamaxiewanhou，haixuqiutiaozhashujushishushifouhuiling。

4.2稱量差錯操控措施

bangshou
，zaibanheshebeizuoyeguochengzhong
，helideshiyongchuanganqishijinbuhunningtubanhezhanjiliangjingquexingdeyouyongshoufa。youyupeiliaoyoubiyaojingguogaidiannaolaihelicaokonggegejixieshebei

，diannaoxuqiujiangbenshenjieshoudaodegeleipeiliaolunshujingquechuanshugeichuanganqi，bingduibenshenjieshoudegeleixinhaojinxingchuli
，jinkenengxiajianghunningtubanhezhandechacuo。zaihunningtubanheguochengzhongquedingtiaoxuannaleichuanganqi

，bingpouxiheyantaopeiliaodianzichengchuanganqidelingmindu。dier，zaishiyongchuanganqiguochengzhongzuihaoshiyong3套12°junyundepeiliaochengdouzhankai
，zaichuchanshijianzhong
，wuliaoyibanbuhuizaipeiliaoshebeishangyunzhuan，yizhiyuchuanganqideshoulibujunyun，daozhichuanganqizhongjiujieshoudaodexinhaocunzaichacuo。zhenduizheyiwenti，nenggouzaishijianchengliangshi，jiangchengtiganyingshuzhitiaojiezhiceliangehelicaokongguimoneijike。

4.3粉料懸浮差錯操控措施

操cao控kong粉fen料liao懸xuan浮fu形xing成cheng的de計ji量liang差cha錯cuo
，需xu求qiu在zai開kai始shi拌ban和he站zhan供gong料liao體ti係xi設she計ji時shi便bian歸gui納na考kao慮lv各ge個ge方fang麵mian的de要yao素su。不bu隻zhi需xu求qiu考kao慮lv粉fen料liao的de進jin風feng管guan和he回hui風feng管guan直zhi徑jing巨ju細xi
，還hai需xu求qiu對dui各ge個ge跟gen拌ban和he機ji緊jin密mi相xiang關guan的de其qi他ta管guan道dao
、機械設備、構建等深入剖析。要將縫隙與除塵器銜接的管道直徑操控在250mm以上，而粉料秤排氣補氣管路和拌和機蓋相通管路的直徑至少要200mm。

4.4人工差錯操控措施

進(jin)步(bu)混(hun)凝(ning)土(tu)拌(ban)和(he)站(zhan)計(ji)量(liang)精(jing)度(du)，還(hai)能(neng)夠(gou)經(jing)過(guo)進(jin)步(bu)操(cao)控(kong)體(ti)係(xi)對(dui)計(ji)量(liang)精(jing)度(du)的(de)可(ke)控(kong)性(xing)等(deng)來(lai)完(wan)成(cheng)，假(jia)如(ru)缺(que)少(shao)專(zhuan)業(ye)的(de)操(cao)作(zuo)人(ren)員(yuan)操(cao)作(zuo)依(yi)然(ran)不(bu)能(neng)到(dao)達(da)預(yu)期(qi)的(de)精(jing)度(du)操(cao)控(kong)方(fang)針(zhen)，所(suo)以(yi)要(yao)想(xiang)進(jin)步(bu)混(hun)凝(ning)土(tu)拌(ban)和(he)站(zhan)計(ji)量(liang)精(jing)度(du)，還(hai)有(you)必(bi)要(yao)采(cai)納(na)有(you)用(yong)的(de)措(cuo)施(shi)操(cao)控(kong)人(ren)工(gong)差(cha)錯(cuo)。能(neng)夠(gou)采(cai)納(na)以(yi)下(xia)2個措施：①加(jia)強(qiang)對(dui)操(cao)作(zuo)人(ren)員(yuan)的(de)技(ji)術(shu)訓(xun)練(lian)，應(ying)該(gai)當(dang)作(zuo)一(yi)項(xiang)長(chang)期(qi)任(ren)務(wu)來(lai)抓(zhua)，不(bu)隻(zhi)抓(zhua)好(hao)操(cao)作(zuo)人(ren)員(yuan)的(de)崗(gang)前(qian)訓(xun)練(lian)作(zuo)業(ye)
，而(er)且(qie)還(hai)需(xu)求(qiu)定(ding)期(qi)展(zhan)開(kai)訓(xun)練(lian)，訓(xun)練(lian)的(de)內(nei)容(rong)除(chu)了(le)混(hun)凝(ning)土(tu)拌(ban)和(he)的(de)操(cao)作(zuo)技(ji)能(neng)外(wai)，還(hai)應(ying)該(gai)重(zhong)視(shi)培(pei)育(yu)操(cao)作(zuo)人(ren)員(yuan)的(de)責(ze)任(ren)心(xin);②操作人員還應該定期、不bu定ding期qi查zha看kan和he保bao護hu拌ban和he站zhan各ge種zhong設she備bei
，特te別bie是shi要yao注zhu意yi查zha看kan計ji量liang體ti係xi
，一yi旦dan發fa現xian問wen題ti時shi要yao當dang即ji解jie決jue，然ran後hou防fang止zhi後hou期qi養yang護hu辦ban理li不bu到dao位wei帶dai來lai的de損sun失shi。

4.5原資料不合格操控措施

保證混凝土拌和的原資料，有必要重視企業的出產辦理。作為混凝土企業，其在收購各類原資料時有必要將各類原資料品種、數量、guifandengshangbao，jiangqijiaoyuxiangguanbumenzhayan
，daizhayanhegejinhou
，caiganpizhunyuanziliaoyongyuhunningtubanhezhong。hunningtuqiyeyoubiyaocongzhengguideyuanziliaogonghuoshangzhongshougouyuanziliao，haiyoubiyaozhongshiziliaodezhayan
，nenggouxianshiyongshaoliangdeyuanziliaojinxinghunningtuchuchan
，daibaozhengzhilianghegehoucaigandaliangtouruchuchan，bimianzaotayuanziliao。

5結束語

hunningtuzhengtizhilianggenhunningtubanhezhanjiliangzuoyejinmixiangguan，jiaogaojingdudejiliangjieguoyouzhuyujinbuhunningtuzhengtidelaoguxing。woguohunningtubanhezhanjilianghaicunzaigezhongchacuo，yantaofaxian
，daozhijiliangchacuodeyuanyinjiaoduo
，baokuoluoliaochacuo
、稱量差錯、粉料懸浮差錯、人工差錯、yuanziliaobuhegedeng
，yaoxiangjinbuhunningtubanhezhandejinliangjingquexing
，youbiyaoyijushangshuyaosucainayouyongdecaokongcuoshi，ranhoujianghunningtubanhezhandechacuocaokongzaiyunxudeguimonei。