Flatbed semi-trailer: Keeb kwm ntawm lub npe thiab kev lag luam tus nqi
Hauv kev lag luam hnyav- tsheb thauj mus los, lo lus "flatbed semi-trailer" yog dav siv los piav txog ib hom hnyav-duty semi-trailer, thiab nws lub npe ncaj qha los ntawm cov khoom lag luam tseem ceeb tshaj plaws thiab kev ua haujlwm zoo: lub tiaj tus thiab tsis muaj kev cuam tshuam cov khoom thauj. Tsis zoo li lowboy trailers, uas muaj qhov txo qis hauv lub ntsiab lawj, flatbed semi-trailers txais yuav "uniform flat lawj" tsim. Tag nrho cov khoom thauj khoom- nqa cov seem yog lub platform tiaj tus uas tuav qhov siab zoo ib yam nrog lub tsheb thauj neeg lub thav duab, tsis muaj qhov pom tseeb poob rau pem hauv ntej lossis tom qab. Cov qauv tshwj xeeb no muab cov trailer kom zoo nkauj thiab qhib qhov profile, thiab lub npe hu ua "flatbed semi-trailer" tau tsim los ua kom muaj kev xav txog qhov kev xav ntawm lub cev - yooj yim, nco, thiab piav qhia tam sim ntawm trailer tus qauv tsim.
Lub hauv paus chiv keeb ntawm flatbed semi-trailer hnub rov qab mus rau thaum ntxov xyoo pua 20th, lub sij hawm thaum kev lag luam xws li kev tsim kho, mining, thiab kev tsim khoom tau nthuav dav, tsim kom muaj kev xav tau rau kev thauj ntau yam loj, tsis xwm yeem, thiab cov khoom siv ntau yam xws li cov kab hlau, cov kav dej loj, thiab cov khoom lag luam dav dav. Cov tsheb thauj khoom uas muaj nyob hauv lub sijhawm tau tawm tsam nrog txoj haujlwm no: lawv cov txheej txheem kaw tau ua rau nws nyuaj rau kev thauj khoom thiab thauj khoom tsis tu ncua, thiab lawv tsis muaj qhov yooj yim uas yuav tsum tau thauj cov khoom loj - ntim. Cov thawj flatbed semi-trailers tau hais txog cov ntsiab lus mob no los ntawm qhov qhib, tiaj tus cargo deck nrog qhov siab ntawm 48–60 ntiv tes (122–152 centimeters) saum av. Lub tiaj tiaj thiab tsis muaj kev cuam tshuam no tsis tsuas yog tso cai rau kev thauj khoom yooj yim thiab tshem tawm ntawm ntau yam khoom thauj tsis zoo thiab hnyav (feem ntau nrog kev pab ntawm cranes lossis forklifts) tab sis kuj tau muab cov khoom thauj txaus- qhov chaw bearing, zoo heev txhim kho ntau yam thiab kev ua haujlwm ntawm hnyav - tsheb thauj mus los. Raws li qhov kev tsim no tau txais koob meej, lub npe "flatbed semi-trailer" tau dhau los ua tus qauv kev lag luam, hloov cov ntsiab lus ntau dua los yog cumbersome vim nws qhov yooj yim thiab meej.
Tshaj li nws qhov kev piav qhia, lub npe "flatbed semi-trailer" yog zoo sib xws nrog cov trailer lub hom phiaj ua haujlwm. Flatbed semi-trailers tshwj xeeb yog tsim los rau kev thauj ntau yam hnyav- lub luag haujlwm, loj, thiab thauj khoom tsis tu ncua, thiab daim ntawv lo "flatbed" tam sim ntawd qhia qhov ua tau zoo rau cov kws tshaj lij kev lag luam. Sij hawm dhau los, kev hloov pauv ntawm cov qauv hauv qab flatbed tau tshwm sim, xws li ntau- qag qauv (xws li 3- qag, 4- qag, thiab 5- qag configurations) thiab detachable sab rail versions, tab sis tag nrho khaws cov tub ntxhais tiaj tiaj thiab qhib lub npe deck. Cov kev hloov pauv no txhim kho lub peev xwm thiab kev hloov pauv-piv txwv li, 5-axle flatbed semi-trailers tuaj yeem tuav cov khoom hnyav txog 80 tons lossis ntau dua los ntawm kev faib qhov hnyav hla cov axles ntxiv, thaum cov khoom siv sab nraud tso cai rau kev thauj khoom yooj yim ntawm cov khoom thauj ntau- tab sis lawv tsis hloov lub hauv paus tsim qauv uas muab lub trailer nws lub npe.
Hauv kev lag luam thoob ntiaj teb, lo lus "flatbed semi{0}}trailer" feem ntau siv sib hloov nrog "flatdeck trailer" lossis "qhib-sab saum toj flatbed," tab sis tag nrho peb nqe lus hais txog tib lub ntsiab lus: lub tiaj tus thiab tsis muaj kev cuam tshuam cov khoom thauj. Txawm hais tias lub ntsiab lus, lub npe yeej ib txwm khi rov qab rau lub trailer lub hom phiaj tsim qauv: los daws cov teeb meem ntawm kev thauj khoom loj, hnyav, thiab tsis sib xws ntawm cov khoom thauj tau yooj yim thiab ua tau zoo. Niaj hnub no, flatbed semi-trailers tseem tseem ceeb hauv ntiaj teb hnyav- thauj khoom, txhawb nqa cov phiaj xwm kev tsim kho, kev tsim hluav taws xob, thiab kev nthuav dav thoob ntiaj teb. Lub npe "flatbed semi-trailer" txuas ntxiv yog lub hauv paus ntawm cov lus hauv kev lag luam, ua pov thawj rau qhov yooj yim, cov lus piav qhia tuaj yeem ua siab ntev rau ntau dua ib puas xyoo los ntawm kev xav txog cov khoom lag luam cov yam ntxwv tseem ceeb tshaj plaws.
