Xaiv Bolts hauv Mechanical Design

Cov qib kev ua tau zoo ntawmboltssiv rau steel qauv kev sib txuas tau muab faib ua ntau tshaj 10 qib, suav nrog 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, thiab lwm yam. bolt qib yog piv txwv li, ib lub bolt ntawm qib 4.8, 4 sawv cev rau lub zog tensile, thiab 0.8 sawv cev rau qhov sib piv ntawm lub zog ntawm lub zog tensile. Ntawd yog, lub zog tensile ntawm qib 4.8 yog 400MPa, thiab nws lub zog tawm los yog 400x0.8=320MPa. Ib yam li ntawd, lwm qib bolt kuj muaj tib lub ntsiab lus.

Siab zog boltsthiab zoo tib yam bolts
Lub zog muaj zog bolts tseem tuaj yeem suav tias yog cov lus tuaj txawv teb chaws. Cov lus Askiv txhais lus yuav tsum yog high-strength kev sib txhuam ua ntej nruj bolts, tshem tawm plaub lo lus kev sib txhuam ua ntej nruj. Qhov kev tshem tawm no tsis yog qhov tseem ceeb thiab tau ua rau muaj kev tsis sib haum xeeb rau ntau tus pib. Los ntawm qib ntawm bolts, nws tuaj yeem pom tau tias qhov ntsuas ntsuas qhov ntsuas lub zog yog lub zog, txawm tias nws yog lub zog tensile lossis lub zog tawm los, thaum kawg nws yog qhov kev cia siab ntawm cov khoom siv. Qee phau ntawv hais tias bolts nrog qib kev ua tau zoo dua lossis sib npaug ntawm 8.8 yog hu ua lub zog muaj zog bolts. Tab sis ntau lub bolts zoo tib yam peb feem ntau pom kuj tuaj hauv qib 10.9 thiab 12.9, thiab lawv cov nqi yog tib yam li cov bolts zoo tib yam. Cia peb tsis xav txog qhov ua tau zoo ntawm cov bolts muaj zog rau tam sim no. Peb tsuas yog piav qhia qhov teeb meem no los ntawm kev ntxhov siab
Siab zog bolts cia siab rau clamping ob qhov chaw thiab ua rau lub siab tshaj plaws zoo li qub kev sib txhuam quab yuam los ntawm pre nruj quab yuam. Raumuaj zog bolts, lawv tsuas yog nyob rau hauv nro thiab tsis raug shear quab yuam. Yog hais tias ob yam khoom txav mus rau ib leeg, nws qhia tau hais tias tsim tsis ua haujlwm thiab tsim tsis tsim nyog. Cov ntsiab lus no tseem ceeb heev. Nws txhais tau hais tias ob qhov chaw yog nruj me ntsis txuas, ib yam li vuam. Yog hais tias lawv swb, nws qhia tau hais tias vuam tsis ua hauj lwm, thiab tus tsim kho tshuab xam qauv yog tsis raug. Rigidity qhia txog kev sib txuas tsis sib xws uas tuaj yeem xa cov torque. Qhov no yog lub ntsiab lus tseem ceeb rau cov neeg tsim qauv tsim cov bolts muaj zog, thiab nws kuj yog qhov sib txawv tseem ceeb ntawm cov ntsia hlau zoo tib yam thiab lub zog muaj zog bolts.
Thiab 8.8 qib ntawm cov bolts zoo tib yam tsuas yog sawv cev rau lub zog siab.
Ordinary boltscia siab rau lawv tus kheej lub zog los tiv thaiv shear quab yuam. Los ntawm kev tsom xam txhua yam kev xav, cov bolts zoo tib yam yog pob khawm hauv kev suav tshuab thiab tuaj yeem swb. Txhawm rau exaggerate, ob yam khoom tuaj yeem swb yam tsis tas yuav nruj. Kev ua haujlwm ntawm lub bolt tsuas yog txuas ob yam khoom, thiab ob lub khoom tuaj yeem swb ntev npaum li lub ntsia liaj qhov rooj tsis tuaj yeem rub.
Qhov sib txawv ntawm cov bolts zoo tib yam thiab lub zog muaj zog bolts nyob rau hauv lub zog ntawm cov khoom siv.