Thaum tuav cov tshuab hnyav thiab lwm yam khoom siv hauv kev lag luam, bolts tuaj yeem maj mam loosen vim tias muaj ntau lub zog muaj zog. Peb yuav tsis muab rau koj ua tiav cov chav kawm physics, tab sis peb yuav qhia qee lub ntsiab lus tseem ceeb:
●Vibration thiab Fretting: Bolts maj mam loosen feem ntau los ntawm kev vibrations thiab fretting uas tshwm sim thaum lub tshuab hnyav lossis khoom siv ua haujlwm. Nyob rau tib lub sijhawm, cov zog no ua rau cov bolts hloov mus rau hauv txoj kev me me. Xav tias nws yog qhov tsis tu ncua, hloov maj mam txav txav-ntawm qhov chaw nws nyuam qhuav pom, tab sis dhau sijhawm nws tuaj yeem muaj qhov tshwm sim tseem ceeb.
● Bolt Tension maj mam so: Raws li cov tshuab vibrates, cov frettings maj mam so qhov nro hauv lub ntsia liaj qhov rooj. Bolts tau pib nruj rau lub zog tshwj xeeb, tsim kom muaj lub zog clamping uas tuav cov khoom sib txuas ua ke. Txawm li cas los xij, kev vibrations ua raws li lub zog tas li ntawm qhov clamp no, ua rau lub ntsia liaj qhov rooj plam nws qhov pib nruj. Cov nyhuv no feem ntau hu ua "creep."
Vibration Sources:
● Heavy machinery, xws li crushers, siv cov khoom siv, tsim cov cav tov
●Engine, seb nws yog lub tsheb lossis lub tshuab hluav taws xob nyob ruaj ruaj, thiab lwm yam.
● Cov khoom siv tig, xws li twj, kiv cua, thiab turbines
● Tsheb txav
● Qhov tshwm sim ntawm Loose Bolts
● Cov teebmeem ntawm cov bolts xoob mus deb dhau qhov tsis yooj yim. Qhov tseeb, lawv tuaj yeem ua kev puas tsuaj.
Qhov tshwm sim ntawm xoob screws
Cov teebmeem ntawm xoob screws mus deb dhau qhov tsis yooj yim. Qhov tseeb, lawv tuaj yeem ua kev puas tsuaj.
● Cov khoom siv tsis ua haujlwm - cov bolts xoob tuaj yeem cuam tshuam cov txheej txheem kev ncaj ncees ntawm cov tshuab lossis cov qauv, ua rau cov khoom tsis ua haujlwm. Cov kev ua tsis tiav no tsis yog tsuas yog ua rau kev kho lossis hloov pauv, tab sis tseem ua rau muaj kev nyab xeeb tseem ceeb rau cov neeg ua haujlwm thiab cov neeg sawv cev.
● Kev raug mob - Qee zaum, cov ntsia hlau xoob tuaj yeem ua rau cov cuab yeej ua haujlwm tsis zoo, ua rau muaj kev sib tsoo thiab raug mob rau cov neeg ua haujlwm nyob ze.
● Nqi poob qis - Qhov cuam tshuam nyiaj txiag ntawm kev poob qis los ntawm cov bolts xoob yog qhov tseem ceeb. Thaum cov tshuab lossis cov txheej txheem tseem ceeb dhau los ua tsis tau vim muaj teeb meem ntawm cov ntsia hlau, nws tuaj yeem ua rau cov khoom lag luam ploj, tsis muaj hnub kawg thiab ua haujlwm tu nqi.
Yuav Tiv Thaiv Bolts Los Ntawm Loosing: 4 Cov Kauj Ruam Sim
1. Xyuas kom muaj kev xaiv thiab kev teeb tsa ntawm Bolt
Tau kawg, thawj kauj ruam tseem ceeb tshaj plaws los tiv thaiv bolt loosening yog xaiv txoj cai ntsia liaj qhov rooj. Qhov no suav nrog kev saib xyuas rau cov hauv qab no tseem ceeb:
Cov Khoom Siv thiab Txheej Txheej - Xaiv cov khoom siv thiab txheej txheej uas tsim nyog rau ib puag ncig tshwj xeeb thiab kev ntxhov siab rau koj daim ntawv thov yuav ntsib.
Qib – Bolt qib yog tsim los raws nraim li no; txhawm rau txheeb xyuas qhov kev ntxhov siab ib lub bolt tshwj xeeb tuaj yeem tiv taus.
Xov Hom - Cov xov uas muab kev ruaj ntseg haum, xws li cov xov zoo, feem ntau nyiam rau cov ntawv thov uas ua rau muaj kev vibration.
2. Siv cov khoom siv xauv
Txhawm rau ntxiv ib txheej ntxiv ntawm kev ruaj ntseg, xav txog kev siv lub xauv nrog rau lub ntsia liaj qhov rooj. Qee qhov kev xaiv zoo tshaj plaws yog xauv lub tshuab ntxhua khaub ncaws, xov xov thiab teeb tsa screws - txhua tus muaj lawv tus kheej qhov zoo thiab qhov tsis zoo.
Lub teeb ntsia hlau yog lub kaw lus zoo tshaj plaws rau cov ntaub ntawv siv no. Qhov tseeb, qhov no yog qhov loj tshaj takeaway ntawm kab lus no. Teem screws yog self-locking screws nrog ib tug hex taub hau nrog ib tug tshwj xeeb notch lub luag hauj lwm rau lawv tus kheej-locking peev xwm. Teem screws yog xya lub sij hawm ntau dua kev co resistant dua li ib txwm hex taub hau screws! Yog tias koj tseem tsis tau sim nws, Kuv tsis tau dag thaum kuv hais tias nws yog tus hloov pauv kev ua si.
Lock washers yog tsim los tiv thaiv kev xoob los ntawm kev vibration. Lawv ua hauj lwm los ntawm kev tsim nro ntawm lub taub hau ntsia hlau thiab nto. Txawm hais tias lawv yog cov nqi-zoo thiab yooj yim rau nruab, lawv cov kev ua tau zoo tuaj yeem sib txawv los ntawm daim ntawv thov thiab tej zaum yuav tsis tas tiv thaiv kom xoob.
Xov thaj ua rau thaj yog cov khoom siv ua ntej uas ua rau muaj kev sib txhuam ntawm cov ntsia hlau thiab cov xov. Qhov no zoo heev txo txoj hauv kev poob phaus. Lawv muaj txiaj ntsig tshwj xeeb hauv kev siv nrog kev vibration siab, tab sis tuaj yeem kim dua lwm cov kev daws teeb meem. Tsis tas li ntawd, feem ntau cov ntsia hlau uas muaj qhov ntsuas phoo tsis tuaj yeem raug kaw thiab rov nruj dua yog tias thaj chaw hnav.
3. Tighten rau lub torque teev
Kev nruj nruj ntawm cov ntsia hlau yog qhov tseem ceeb los tswj lawv txoj kev ncaj ncees thiab tiv thaiv lawv los ntawm kev xoob. Nco ntsoov xa mus rau cov chaw tsim khoom cov lus qhia tshwj xeeb lossis cov lus qhia engineering kom raug torque qhov tseem ceeb. Ua ib qho kev sim khiav lossis siv lub zog tensioner los xyuas tias koj tau mus txog qhov xav tau qhov nro.
4. Kev tshuaj xyuas thiab kev saib xyuas tsis tu ncua
Qhov kev ua tau zoo ntawm cov screws tsis xaus nrog qhov pib installation. Txhawm rau kom muaj kev nyab xeeb mus ntev, ua raws li cov txheej txheem tshuaj xyuas thiab tu. Teem sijhawm kev tshuaj ntsuam xyuas kom paub meej tias cov bolts xoob lossis puas, vim tias kev tshawb pom ntxov tuaj yeem tiv thaiv kev puas tsuaj loj.
Thaum lub sij hawm soj ntsuam, yog tias koj pom tias ib tug ntsia hlau tawg los yog tawg, tam sim ntawd hloov nws nrog ib tug tshiab los ntawm ib tug ntseeg siab manufacturers. Nco ntsoov, qee zaum qhov kev xaiv pheej yig tshaj tsis yog qhov kev xaiv zoo tshaj plaws lossis txawm tias qhov kev xaiv pheej yig tshaj plaws nyob rau lub sijhawm ntev. Yog tias koj pom koj tus kheej hloov cov ntsia hlau puas ntau zaus, sim nqis peev hauv qhov kev xaiv zoo dua kom txuag koj tus kheej qhov teeb meem thiab nyiaj txiag.