Phaj hlau nruab nrab thiab hnyav yog cov khoom siv hlau uas siv tau ntau yam.

Raws li cov qauv hauv tebchaws, nws cov tuab feem ntau yog siab dua 4.5 hli. Hauv kev siv tiag tiag, peb qhov tuab feem ntau yog 6-20 hli, 20-40 hli, thiab 40 hli thiab siab dua. Cov tuab no, nrog lawv cov yam ntxwv sib txawv, ua lub luag haujlwm tseem ceeb hauv ntau qhov chaw sib txawv.

Kawm Ntxiv

Phaj nruab nrab thiab hnyavntawm 6-20 hli suav hais tias yog "lub teeb thiab yoog tau." Hom phaj no muaj kev tawv zoo heev thiab ua tau yooj yim, thiab feem ntau siv rau hauv kev tsim cov beams tsheb, cov phaj choj, thiab cov khoom siv hauv paus. Hauv kev tsim tsheb, piv txwv li, cov phaj nruab nrab thiab hnyav, los ntawm kev stamping thiab vuam, tuaj yeem hloov mus ua lub thav duab tsheb ruaj khov, ua kom muaj kev nyab xeeb thaum txo qhov hnyav thiab txhim kho kev siv roj. Hauv kev tsim choj, nws ua haujlwm ua cov hlau thauj khoom, faib cov khoom thauj thiab tiv thaiv kev puas tsuaj ib puag ncig.

6-20 hli

Phaj Nruab Nrab thiab Hnyav

Nyeem Ntxiv

20-40 hli

Phaj Nruab Nrab thiab Hnyav

Nyeem Ntxiv

> 40 hli

Phaj Nruab Nrab thiab Hnyav

Nyeem Ntxiv

Nruab nrab thiab hnyavcov hlau phajntawm 20-40 hli yog suav hais tias yog "lub nraub qaum ruaj khov." Nws lub zog siab thiab kev nruj ua rau nws yog qhov kev xaiv zoo rau cov tshuab loj, cov hlab ntsha siab, thiab kev tsim nkoj. Hauv kev tsim nkoj, cov phaj nruab nrab thiab hnyav ntawm qhov tuab no yog siv rau hauv cov chaw tseem ceeb xws li keel thiab deck, muaj peev xwm tiv taus dej hiav txwv siab thiab nthwv dej cuam tshuam, ua kom muaj kev nyab xeeb hauv kev caij nkoj. Hauv kev tsim cov hlab ntsha siab, lawv tiv taus qhov kub siab thiab siab siab, ua kom muaj kev nyab xeeb thiab ruaj khov hauv kev lag luam.

Nruab nrab thiab hnyavcov phaj hlauCov phaj tuab tshaj 40 hli suav tias yog "hnyav-duty." Cov phaj tuab heev no muaj zog heev rau kev tiv taus siab, hnav, thiab kev cuam tshuam, thiab feem ntau siv rau hauv cov nplhaib turbine rau cov chaw nres tsheb hydropower, lub hauv paus rau cov tsev loj, thiab hauv cov tshuab mining. Hauv kev tsim kho chaw nres tsheb hydropower, lawv siv ua cov khoom siv rau cov nplhaib turbine, muaj peev xwm tiv taus qhov cuam tshuam loj heev ntawm cov dej ntws. Lawv siv rau hauv cov khoom xws li scraper conveyors thiab crushers hauv cov tshuab mining ua rau lub neej ntawm cov khoom siv ntev dua thiab txo cov nqi kho.

Txij li cov tsheb mus rau cov nkoj, txij li cov choj mus rau cov tshuab khawb av, cov phaj nruab nrab thiab hnyav uas muaj ntau qhov tuab sib txawv, nrog lawv cov txiaj ntsig tshwj xeeb, txhawb nqa kev txhim kho kev lag luam niaj hnub thiab tau dhau los ua cov khoom siv tseem ceeb uas tsav kev vam meej thoob plaws ntau qhov chaw.

Tsab xov xwm saum toj no qhia txog cov phaj tuab nruab nrab thiab hnyav thiab lawv cov kev siv. Yog tias koj xav tau cov ntaub ntawv ntxiv, xws li cov txheej txheem tsim khoom lossis cov lus qhia txog kev ua haujlwm, thov qhia rau kuv paub.