Qhov ceev ntawm trolleys thiab cranes nyob ntawm qhov ntev ntawm txoj kev khiav los yog qhov loj ntawm thaj chaw them. Feem ntau, kev ceev ceev yog siv rau kev khiav ntev dua. Short runways yuav khiav qeeb qeeb. Yog tias thaj chaw hauv pem teb muaj neeg coob coob los yog congested, ces qeeb qeeb yuav xav tau. Qhov qeeb qeeb, qhov nrawm dua tuaj yeem muab tso rau. Qhov siab tshaj plaws yog tau txais nrog kev sib txawv ceev cranes. Cov nrawm nrawm yog siv rau kev khiav ntev thiab qeeb qeeb rau qhov chaw. Ib leeg ceev hoists yog nrov tshaj plaws nyob rau hauv lub teeb muaj peev xwm thiab ua tau raws li feem ntau yuav tsum tau ntawm kev txuag nyiaj ntau. Ob qhov ceev hoists feem ntau yog tsib tuj thiab hnyav dua. Hauv qab no yog cov lus qhia rau kev xaiv ceev. Yog tias tsis ntseeg, xaj kom qeeb qeeb. Cov neeg ua haujlwm tsis tshua yws yws txog qhov nrawm dhau. Kev nrawm nrawm dhau tuaj yeem tsim teeb meem.
Hoist Lifting Speeds:
Lifting speeds feem ntau txiav txim siab los ntawm daim ntawv thov thiab siv. Qhov nruab nrab ceev yog feem ntau ntawm 10 thiab 20 fpm. Kev nrawm qis dua 10 fpm feem ntau tsis siv tau tshwj tsis yog tshwj xeeb. Rau qee qhov kev siv txuas ntxiv, kev nrawm dua 20 fpm yuav xav tau.
Feem ntau hoist motors raug ntsuas rau 15 feeb ua haujlwm tas li. Los ntawm kev faib qhov ntev ntawm nqa los ntawm kev nqa ceev hauv ko taw ib feeb, koj tuaj yeem txiav txim siab yog tias koj tau tshaj qhov ntsuas no. Yog tias muaj kev tsis ntseeg, hu rau Mine Crane.
Ntawm ob qhov ceev hoists, qhov qeeb qeeb feem ntau yog ib qho - plaub lub hoist lub ntsiab ceev. Hoist creep speeds feem ntau yog ib qho -feem kaum ntawm lub ntsiab hoist ceev thiab hloov pauv ceev hoists feem ntau pib ntawm ib qho -feem kaum thiab hloov pauv mus rau qhov nrawm.
Trolley Ceev:
Qhov yooj yim ntawm tus neeg teb xov tooj thiab smoothness ntawm kev mus los yog lub hauv paus tseem ceeb hauv kev xaiv ntawm lub tshuab trolley ceev. Rau spans txog 60', 65 FPM, feem ntau pom zoo. Rau kev ncua ntev, 80 fpm yuav ua tau zoo dua. Qhov nruab nrab taug kev ceev yog li 100 fpm.
Choj mus txawv tebchaws:
Qhov ntev ntawm txoj kev khiav, hom kev thauj khoom, thiab tus neeg teb xov tooj kev nyab xeeb thiab yooj yim yog qhov tseem ceeb hauv kev xaiv ceev. Rau pem teb ua haujlwm cranes thiab khiav mus txog 100', ib puas fpm feem ntau yuav raug pom zoo. Rau kev khiav dhau 200′, ib puas thiab peb caug fpm tej zaum yuav txaus siab dua.
Xov tooj cua tswj ceev cranes tuaj yeem nyob ntawm 160 fpm txog 350 fpm. Cov kev ua haujlwm tshwj xeeb yuav txiav txim siab seb qhov twg yog qhov zoo tshaj plaws. Choj ceev yog qhov sib txawv ntawm 10% ntawm qhov kev xaiv ceev mus rau 100 feem pua.
Qhov ceev ntawm trolleys thiab cranes nyob ntawm qhov ntev ntawm txoj kev khiav los yog qhov loj ntawm thaj chaw them. Feem ntau, kev ceev ceev yog siv rau kev khiav ntev dua. Short runways yuav khiav qeeb qeeb. Yog tias thaj chaw hauv pem teb muaj neeg coob coob los yog congested, ces qeeb qeeb yuav xav tau. Qhov qeeb qeeb, qhov nrawm dua tuaj yeem muab tso rau. Qhov siab tshaj plaws yog tau txais nrog kev sib txawv ceev cranes. Cov nrawm nrawm yog siv rau kev khiav ntev thiab qeeb qeeb rau qhov chaw. Ib leeg ceev hoists yog nrov tshaj plaws nyob rau hauv lub teeb muaj peev xwm thiab ua tau raws li feem ntau yuav tsum tau ntawm kev txuag nyiaj ntau. Ob qhov ceev hoists feem ntau yog tsib tuj thiab hnyav dua. Hauv qab no yog cov lus qhia rau kev xaiv ceev. Yog tias tsis ntseeg, xaj kom qeeb qeeb. Cov neeg ua haujlwm tsis tshua yws yws txog qhov nrawm dhau. Kev nrawm nrawm dhau tuaj yeem tsim teeb meem.
Hoist Lifting Speeds:
Lifting speeds feem ntau txiav txim siab los ntawm daim ntawv thov thiab siv. Qhov nruab nrab ceev yog feem ntau ntawm 10 thiab 32 fpm. Kev nrawm qis dua 10 fpm feem ntau tsis siv tau tshwj tsis yog tshwj xeeb. Rau qee qhov kev siv txuas ntxiv, kev nrawm dua 32 fpm yuav xav tau.
Feem ntau hoist motors raug ntsuas rau 15 feeb ua haujlwm tas li. Los ntawm kev faib qhov ntev ntawm nqa los ntawm kev nqa ceev hauv ko taw ib feeb, koj tuaj yeem txiav txim siab yog tias koj tau tshaj qhov ntsuas no. Yog tias muaj kev tsis ntseeg, hu rau Mine Crane.
Ntawm ob qhov ceev hoists, qhov qeeb qeeb feem ntau yog ib qho - plaub lub hoist lub ntsiab ceev. Hoist creep speeds feem ntau yog ib qho -feem kaum ntawm lub ntsiab hoist ceev thiab hloov pauv ceev hoists feem ntau pib ntawm ib qho -feem kaum thiab hloov pauv mus rau qhov nrawm.
Trolley Ceev:
Qhov yooj yim ntawm tus neeg teb xov tooj thiab smoothness ntawm kev mus los yog lub hauv paus tseem ceeb hauv kev xaiv ntawm lub tshuab trolley ceev. Rau spans txog 60', 65 FPM, feem ntau pom zoo. Rau kev ncua ntev, 80 fpm yuav ua tau zoo dua. Qhov nruab nrab taug kev ceev yog li 100 fpm.
Choj mus txawv tebchaws:
Qhov ntev ntawm txoj kev khiav, hom load nqa thiab tus neeg teb xov tooj kev nyab xeeb thiab yooj yim yog qhov tseem ceeb hauv kev xaiv ceev. Rau pem teb ua haujlwm cranes thiab khiav mus txog 100', ib puas fpm feem ntau yuav raug pom zoo. Rau kev khiav dhau 200′, ib puas thiab peb caug fpm tej zaum yuav txaus siab dua.
