Lub subframe yog ib qho tseem ceeb ntawm kev thauj khoom-cov qauv kabmob hauv lub tsheb chassis thiab feem ntau ruaj ntseg rau lub tsheb lub cev los ntawm ntau lub ntsiab lus fastening. Txawm hais tias subframe fasteners yog cov khoom me me, lawv raug cuam tshuam rau kev vibration, cuam tshuam, thiab cyclic loads nyob rau hauv ntau cov lus qhia thoob plaws hauv lub tsheb lub neej kev pab cuam. Yog li xaiv cov fasteners kom raug yog qhov tseem ceeb rau kev tswj kom ruaj khov thiab txhim khu kev qha chassis txuas. Cov txheej txheem xaiv yuav tsum xav txog daim ntawv thov tsheb, qhov chaw mounting, kev sib koom tsim, thiab ib puag ncig kev ua haujlwm.
Lub tsheb qauv thiab qhov chaw mounting yuav tsum tau lees paub ua ntej. Subframe designs, mounting qhov, thiab fastening kev npaj sib txawv ntawm lub tsheb platforms. Fasteners uas zoo sib xws yuav tsis hloov pauv tau. Yog li ntawd, cov khoom uas tau xaiv yuav tsum raug txheeb xyuas los ntawm cov chaw tsim khoom ntawm lub tsheb tshwj xeeb lossis qhov loj me ntawm cov fastener kom ntseeg tau tias muaj kev sib raug zoo ntawm cov xov loj, ntev, thiab txoj kev teeb tsa.
Qib muaj zog yog lwm qhov kev txiav txim siab tseem ceeb. Subframe mounting cov ntsiab lus tuaj yeem ntsib cov khoom siv tseem ceeb, yog li lub fastener yuav tsum muab qhov tsim nyog tensile, shear, thiab qaug zog ua haujlwm rau daim ntawv thov. Kev ntsuas lub zog siab dua tsis yog qhov kev xaiv zoo dua. Fastener lub zog yuav tsum tau sib phim rau kev sib koom tsim, mating Cheebtsam, thiab engineering yuav tsum tau ua kom ntseeg tau tias tag nrho cov kev sib txuas ua tau raws li qhov xav tau.
Qhov tseeb qhov tseeb yog qhov tseem ceeb sib npaug. Tsis muaj xws li bolt txoj kab uas hla, xov specification, ntev ntev, lub taub hau qhov ntev, thiab kev koom tes nrog lub mating txiv ntseej los yog threaded qhov yuav tsum tau raws li cov kev cai. Lub fastener uas luv dhau yuav muab cov xov tsis txaus, thaum lub fastener ntev ntev tuaj yeem cuam tshuam nrog cov khoom nyob ib puag ncig. Yog li ntawd, kev sib piv cov qauv tsim qhov ntev yog qhov tseem ceeb.
Kev ua haujlwm ib puag ncig yuav tsum tau xav txog. Subframe fasteners nyob rau hauv qab lub tsheb thiab tej zaum yuav raug cov dej noo, av nkos, cov khib nyiab ntawm txoj kev, thiab de- icing ntsev. Kev xaiv cov khoom siv thiab kev kho saum npoo tuaj yeem muaj txiaj ntsig zoo rau kev tiv thaiv corrosion. Cov ntawv thov raug rau qhov xav tau ib puag ncig tej zaum yuav xav tau cov fasteners nrog kev tiv thaiv tiav.
Cov kev xav tau ntawm kev txhim kho yog lwm qhov tseem ceeb. Subframe kev sib txuas yog ib feem ntawm lub tsheb qhov tseem ceeb chassis qauv, yog li fasteners feem ntau yuav tsum tau muab ntsia raws li cov txheej txheem torque thiab kev sib dhos. Qee cov fasteners kuj tseem muaj cov kev xav tau tshwj xeeb los yog npaj rau kev siv ib zaug. Yog li ntawd, kev hloov pauv yuav tsum tsis txhob raug xaiv los ntawm lub hauv paus ntawm qhov zoo li lossis qhov dav dav zoo sib xws.
Zuag qhia tag nrho, kev xaiv subframe fastener yuav tsum yog raws li kev sib raug zoo, kev tsim qauv, thiab kev teeb tsa kom raug. Daim ntawv thov tsheb, qib zog, qhov ntev, cov khoom siv, kev tiv thaiv nto, thiab kev sib dhos tshwj xeeb yuav tsum tau soj ntsuam ua ntej xaiv qhov hloov. Kev siv cov fasteners uas ua tau raws li qhov yuav tsum tau ua thiab txhim kho lawv kom raug pab tswj kom muaj kev sib txuas ntawm subframe ruaj khov thiab txhawb nqa ntev - lub sij hawm chassis kev cia siab.
