Ib tus neeg muab khoom siv hauv kev tsim kho vaj tse rau 30 xyoo.
Lus
Ib tus neeg muab khoom siv hauv kev tsim kho vaj tse rau 30 xyoo.
Tsis muaj ib qho kev ceev ntawm lub nruas sib tov ua vaj tse uas muab qhov tshwm sim zoo tshaj plaws rau txhua lub tshuab. Cov khoom sib tov uas nqa tau tuaj yeem ua haujlwm li ntawm 20–25 rpm hauv cov piv txwv ntawm cov chaw tsim khoom luam tawm, thaum ACI tso cov tsheb thauj khoom sib tov sib xyaw ntawm kwv yees li 12–18 rpm . Qhov sib txawv tseem ceeb vim tias qhov loj ntawm lub nruas, cov duab ntawm cov hniav, qhov ntim ntawm cov khoom sib xyaw thiab hom sib tov hloov txoj kev uas cov pob zeb txav mus rau hauv lub nruas. Kev tig ceev dua tsis txhais tau tias cov pob zeb zoo dua; thaum lub tshuab sib tov ua haujlwm hauv nws qhov ntau thiab tsawg, tag nrho cov kev hloov pauv thiab lub sijhawm sib tov ua qhov tseem ceeb ib yam.
Rau cov tshuab sib tov uas nqa tau, qhov siv tau zoo tshaj plaws yog qhov ntau thiab tsawg ntawm lub tshuab uas lub tuam txhab tsim khoom siv. Marshalltown qhia txog kwv yees li 20–25 rpm rau nws cov tshuab sib tov uas nqa tau thiab pom zoo kom sib tov li ib feeb rau ib pawg . Qhov ntawd tsis tau txhais hais tias txhua lub tshuab sib tov me me yuav tsum tau kho kom haum rau 25 rpm, tab sis nws qhia tau tias qhov ceev ntawm lub nruas thiab lub sijhawm sib tov yuav tsum tau xav txog ua ke es tsis txhob kho raws li qhov chaw sib cais.
Cov tshuab sib tov tsheb thauj khoom siv cov qauv ua haujlwm sib txawv. ACI hais tias cov tshuab sib tov tsheb thauj khoom feem ntau ua haujlwm ntawm li 12–18 rpm thaum lub sijhawm sib tov. Yog tias muaj cov txheej txheem thauj khoom kom raug, kwv yees li 70–100 lub voj voog ntawm lub nruas feem ntau yuav tsum muab kev sib tov txaus. Yog tias muaj cov tshuaj sib tov txo dej ntau ntxiv rau ntawm qhov chaw, ACI pom zoo kom muaj li 30 lub voj voog ntxiv kom sib xyaw ua ke kom raug.
| Qhov Xwm Txheej Ua Haujlwm | Kev Ceev Tshaj Tawm | Kev Hloov Pauv / Lub Sijhawm |
|---|---|---|
| Piv txwv li lub tshuab sib tov uas nqa tau | 20–25 rpm | Kwv yees li 1 feeb |
| Lub tshuab sib tov khoom - kev sib tov ib txwm muaj | 12–18 rpm | 70–100 tig rov qab |
| Lub tshuab sib tov khoom + HRWR ntxiv rau ntawm qhov chaw | Kev sib tov ceev | Kwv yees li 30 qhov kev hloov pauv ntxiv |
| Lub tsheb sib tov tom qab sib tov tiav lawm | Hauv qab 6 rpm | Theem kev ntxhov siab |
| Lub tsheb sib tov thaum mus ncig | Kwv yees li 2–4 rpm | Tswj cov pob zeb sib xyaw |
Zaj lus qhia yooj yim heev: lub tshuab sib tov ua vaj tse uas nqa tau RPM thiab lub tshuab sib tov RPM tsis yog cov lej sib pauv tau .
Tsis yog. Thaum lub tshuab sib tov mus txog qhov ceev uas nws tau tsim los, tsuas yog ua kom lub nruas tig sai dua tsis tau lees tias yuav sib npaug zoo dua. Cov lus qhia ntawm Marshalltown lub tshuab sib tov uas nqa tau yooj yim tso lub nruas ntawm 20–25 rpm thiab tom qab ntawd tsom mus rau kev cia li ib feeb rau cov khoom sib tov. Hauv lwm lo lus, lub tshuab xav tau kev txav mus los txaus thiab lub sijhawm txaus; qhov ceev ib leeg tsis tuaj yeem hloov lub sijhawm sib tov.
Lub hauv paus ntsiab lus zoo li no tshwm sim hauv ACI cov lus qhia txog lub tsheb thauj khoom sib tov. Tom qab kwv yees li 100 qhov kev hloov pauv ntawm qhov ceev sib tov , ACI pom zoo kom txo lub nruas kom qis dua 6 rpm . Thaum lub sijhawm mus ncig, kwv yees li 2-4 rpm yog qhov ib txwm muaj. Thaum ntawd, txoj haujlwm ntawm lub nruas tau hloov pauv: nws tsis sim sib xyaw cov khoom xyaw ua ke, tsuas yog tiv thaiv cov pob zeb sib xyaw kom tsis txhob poob.
Yog li ntawd, lub tshuab sib tov tsis yog lub tshuab ntxhua khaub ncaws uas tig mus los. Thaum cov khoom sib tov tau sib xyaw zoo lawm, qhov ceev ntxiv feem ntau ua rau lub tshuab muaj zog dua.
Ob qho tib si tseem ceeb, tab sis thaum lub nruas ua haujlwm ntawm RPM ntawm lub tshuab sib tov ua vaj tse kom raug, tag nrho cov kev sib tov ua ke yuav yog qhov ntsuas uas muaj txiaj ntsig ntau dua. ACI siv 70–100 qhov kev hloov pauv ua qhov siv rau lub tsheb thauj khoom sib tov vim tias cov khoom sib tov xav tau kev nqa, poob thiab quav ntau zaus kom sib npaug. Qhov no muaj txiaj ntsig ntau dua li hais txog RPM ib leeg vim tias 15 rpm rau ob peb feeb thiab 15 rpm rau ob peb feeb yeej tsis tsim cov kev sib tov tag nrho zoo ib yam.
Rau cov khoom sib tov uas nqa tau, cov lus qhia ntawm cov chaw tsim khoom feem ntau qhia tib lub tswv yim li lub sijhawm sib tov es tsis yog tag nrho cov kev hloov pauv. Piv txwv li, Marshalltown muab nws qhov ceev ntawm 20-25 rpm nrog kwv yees li ib feeb ntawm kev sib tov. Yog li ntawd, txoj cai engineering uas muaj txiaj ntsig yog: siv RPM uas tau teev tseg ua ntej, tom qab ntawd xyuas kom meej tias pawg tau txais lub sijhawm txaus lossis tag nrho cov kev hloov pauv ntawm lub nruas kom sib xws.
Yog. Kev sib tov ntev dua tsis yog qhov muaj kev nyab xeeb dua. ACI sau tseg tias kev sib tov ntau dhau tom qab kev sib tov txaus tuaj yeem txo qhov kev poob qis. Yog tias cov neeg ua haujlwm ntxiv dej los kho qhov kev poob qis qub, lub zog ntawm cov pob zeb yuav poob li ntawm 8–20% ib teev , nyob ntawm qhov kub ntawm cov pob zeb thiab qhov nrawm ntawm kev poob qis.
Qhov no yog ib qho laj thawj uas cov neeg ua haujlwm yuav tsum tsis txhob cia cov khoom sib tov sib xyaw kom nrawm tag nrho vim tias lub nruas tuaj yeem tig mus ntxiv. Thaum cov pob zeb sib xyaw tau sib xyaw zoo lawm, qhov kev teb zoo feem ntau yog txav mus rau theem kev sib xyaw uas xav tau es tsis txhob ncua lub sijhawm sib tov ceev ceev. Kev ua kom lub nruas ua haujlwm dhau sijhawm tsis ua rau cov pob zeb nce qib.
Cov khoom siv hauv lub nruas kuj hloov cov lus teb. Rau cov pob zeb fiber-reinforced hauv lub tshuab sib tov transit, ACI pom zoo kom muaj qhov ceev ib txwm ntawm 10-12 rpm thaum cov fibers raug ntxiv. Tom qab tag nrho cov fibers nkag mus rau hauv lub tshuab sib tov, cov khoom yuav tsum tau txais tsawg kawg 40 lub nruas ntxiv , sib npaug li kwv yees li 4-5 feeb , los txhawb kev sib kis ntawm cov fiber sib xws.
Qhov no yog ib qho kev ceeb toom uas pab tau tias "qhov ceev ntawm lub nruas sib tov ua vaj tse zoo tshaj plaws" nyob ntawm ob qho tib si lub tshuab thiab cov khoom siv. Cov pob zeb tiaj tus, cov pob zeb siab thiab cov pob zeb fiber-reinforced yuav xav tau cov txheej txheem sib tov sib txawv txawm tias thaum siv tib lub tshuab sib tov.
Kev tig lub nruas tsuas yog ua haujlwm vim tias cov hniav sab hauv nqa thiab rov faib cov pob zeb ua vaj tse. Lub tshuab sib tov nrog lub nruas txoj kab uas hla lossis kev teeb tsa hniav sib txawv tuaj yeem tsim txoj hauv kev sib txawv ntawm tib lub RPM. Qhov no yog vim li cas kev theej qhov ceev los ntawm lwm lub tshuab muaj kev pheej hmoo txawm tias ob lub tshuab sib tov zoo sib xws los ntawm sab nraud.
Qhov loj ntawm cov khoom sib xyaw kuj tseem ceeb. Lub nruas uas puv dhau lawm yuav ua rau muaj chaw tsawg dua rau cov pob zeb kom tsa, dov thiab quav hla thaj chaw sib xyaw. Yog tias lub tshuab sib tov tam sim ntawd tsim cov khoom sib xyaw tsis zoo txawm tias RPM raug, xyuas qhov hnyav tiag tiag ua ntej hloov lub pulley, qhov ceev ntawm lub cav lossis lub kaw lus tsav. Qhov ceev ntawm lub nruas raug tsis tuaj yeem cawm tau cov khoom sib xyaw uas ntau dua li lub peev xwm xav tau ntawm lub tshuab sib tov.
Yog tias lub nruas qub khiav li qub thiab tam sim no tig qeeb dua, qhov teeb meem yuav tshwm sim los ntawm kev siv tshuab ntau dua li kev siv pob zeb ua vaj tse. Pib los ntawm kev xyuas seb lub nruas puas qeeb thaum khoob lossis tsuas yog tom qab thauj khoom xwb. Lub nruas qeeb qeeb taw tes rau lub zog, siv, pulley, bearing lossis lub kaw lus tsav. Lub nruas uas khiav tsis muaj dab tsi tab sis qeeb heev thaum thauj khoom yuav qhia tau tias muaj ntau dhau lossis kev tiv thaiv tsis zoo.
Rau cov tshuab sib tov uas nqa tau, piv qhov ceev ntawm lub nruas nrog rau qhov ntsuas ntawm lub chaw tsim khoom. Yog tias lub tshuab uas xav tias yuav ua haujlwm li ntawm 20-25 rpm yog qis dua tus lej ntawd, tshawb xyuas lub kaw lus tsav tsheb es tsis txhob cia cov khoom sib tov ntev dua thiab cia siab tias yuav zoo tshaj plaws.
| Lo lus nug | Cov Lus Teb Uas Siv Tau |
|---|---|
| Lub tshuab sib tov uas nqa tau yuav tsum khiav RPM twg? | Qee cov khoom sib tov uas nqa tau uas tau luam tawm qhia txog li 20–25 rpm; ib txwm xyuas phau ntawv qhia txog tus qauv. |
| Lub tshuab sib tov tsheb thauj khoom yuav tsum siv RPM twg? | ACI muab kwv yees li 12–18 rpm thaum lub sijhawm sib tov. |
| Feem ntau xav tau pes tsawg lub kiv puag ncig? | ACI muab kwv yees li 70–100 qhov kev hloov pauv rau cov tsheb sib tov nrog cov kab ke thauj khoom kom raug. |
| Tom qab sib tov tiav lawm, yuav muaj dab tsi tshwm sim? | Txo kom qhov kev co qis dua 6 rpm; kev co mus ncig feem ntau yog 2–4 rpm. |
| Kev sib xyaw ntev dua puas tuaj yeem ua rau puas tsuaj rau qhov zoo ntawm cov pob zeb? | Yog. Yog tias qhov poob qis raug kho los ntawm kev ntxiv dej, ACI tshaj tawm tias lub zog poob li ntawm 8–20% ib teev. |
| Puas yog cov fiber concrete xav tau cov txheej txheem sib txawv? | ACI muab 10–12 rpm thaum lub sijhawm ntxiv fiber, ua raws li tsawg kawg 40 revolutions lossis li 4–5 feeb. |
Nws yuav tsim nyog rau qee lub tshuab sib tov uas nqa tau. Marshalltown qhia txog kwv yees li 20–25 rpm rau nws cov tshuab nqa tau, tab sis lwm cov qauv sib tov yuav xav tau ntau yam sib txawv. Siv qhov ntsuas ntawm lub chaw tsim khoom rau lub tshuab tseeb.
Tsis yog cia li ua tau. Lub zog ntawm cov pob zeb ua vaj tse nyob ntawm qhov sib tov sib xyaw, cov dej muaj pes tsawg, kev sib xws thiab kev kho, tsis yog tsuas yog qhov ceev ntawm lub nruas xwb. ACI kuj ceeb toom tias kev sib tov ntev ntev ua raws li kev ntxiv dej los kho qhov poob qis tuaj yeem txo qhov zog li ntawm 8-20% ib teev.
ACI pom zoo kom xav txog hauv kev tig rov qab es tsis yog ib lub sijhawm teem tseg: kwv yees li 70–100 kev tig rov qab ntawm qhov ceev sib tov ntawm tus neeg tsim khoom feem ntau txaus nrog kev thauj khoom kom raug.
Lawv ua haujlwm ua ke. RPM tswj qhov ceev ntawm lub nruas tig, thaum tag nrho cov kev hloov pauv piav qhia txog qhov kev sib tov ntau npaum li cas uas cov khoom sib xyaw tau txais. Kev sib tov zoo los ntawm qhov ceev raug, kev hloov pauv txaus thiab qhov loj me uas lub tshuab sib tov tuaj yeem ua tau - tsis yog los ntawm kev caum tus lej RPM loj tshaj plaws.
Cov cim npe: lub nruas sib tov ua vaj tse ceev, lub nruas sib tov ua vaj tse RPM, lub nruas sib tov ua vaj tse ceev, lub nruas sib tov ua vaj tse RPM, lub sijhawm sib tov ua vaj tse, lub nruas sib tov ua vaj tse RPM, lub nruas sib tov ua vaj tse tig ceev, kev daws teeb meem ntawm lub nruas sib tov ua vaj tse, lub peev xwm sib tov ua vaj tse
