1. Bolt tawg tsis yog vim lub zog tensile ntawm lub ntsia liaj qhov rooj:
Ua ib qho M20 × 80 qib 8.8 siab-lub zog ntsia liaj qhov rooj ua piv txwv, nws qhov hnyav tsuas yog 0.2 kg, thiab nws qhov hnyav tensile yam tsawg kawg nkaus yog 20 tons, uas yog siab li 100, 000 zaug nws tus kheej nyhav. Feem ntau, peb tsuas yog siv nws Fastening 20kg tivthaiv kuj siv tsuas yog ib txhiab ntawm nws lub peev xwm siab tshaj plaws. Txawm hais tias nrog lwm cov khoom siv hauv cov khoom siv, nws tsis tuaj yeem ua rau ntau tshaj ib txhiab npaug ntawm qhov hnyav ntawm cov khoom, yog li lub zog tensile ntawm threaded fastener yog txaus, thiab nws yog tsis yooj yim sua kom puas lub ntsia liaj qhov rooj vim lub zog tsis txaus.
2. Qhov tawg ntawm lub ntsia liaj qhov rooj tsis yog vim lub zog qaug zog ntawm lub ntsia liaj qhov rooj:
Threaded fasteners tuaj yeem loosened tsuas yog 100 zaug hauv qhov kev ntsuas kev vibration xoob sab nraud, thaum lawv yuav tsum tau rov ua dua ib lab zaug hauv kev sim qaug zog. Hauv lwm lo lus, threaded fasteners yog loosened thaum lawv siv 1/10, 000 ntawm lawv lub zog qaug zog, thiab peb tsuas yog siv 1/10, 000 ntawm lawv lub peev xwm siab tshaj plaws, yog li qhov loosening ntawm threaded fasteners yog tsis yog vim qaug zog ntawm bolts.
3. Qhov tseeb ua rau kev puas tsuaj rau threaded fasteners yog loosening:
Tom qab cov threaded fasteners yog loosened, loj kinetic zog mv2 yog generated. Lub zog kinetic loj no ncaj qha ua rau cov fasteners thiab khoom siv, ua rau kev puas tsuaj rau cov fasteners. Tom qab cov fasteners puas lawm, cov khoom siv tsis tuaj yeem ua haujlwm hauv lub xeev qub, uas ua rau cov khoom puas tsuaj ntxiv. Fasteners raug axial quab yuam, threads puas, thiab bolts raug rho tawm. Fasteners raug rau radial quab yuam, lub bolts yog sheared, thiab cov ntsia liaj qhov rooj qhov yog xuas nrig ntaus rau hauv ib tug ellipse.
4, txoj kev xaiv ntawm xov los tiv thaiv xoob txoj kev uas zoo heev los tiv thaiv loosening nyhuv yog lub hauv paus ntawm qhov teeb meem:
Thaum stainless hlau bolts tau tawg, nws yog ib qho yooj yim los kos cov lus xaus tias lub zog tsis txaus, yog li feem ntau ntawm lawv siv txoj kev nce lub bolt txoj kab uas hla thiab lub zog theem. Txoj kev no tuaj yeem ua kom lub zog ua ntej ntawm lub ntsia liaj qhov rooj, thiab nws qhov kev sib txhuam quab yuam kuj tuaj yeem nce ntxiv. Tau kawg, cov nyhuv los tiv thaiv kev xoob kuj tuaj yeem txhim kho, tab sis txoj kev no yog ib txoj kev uas tsis yog kev tshaj lij. Nws cov peev nyiaj loj dhau thiab cov txiaj ntsig tsawg dhau. Nyob rau hauv luv luv, lub bolt yog: "Yog hais tias nws tsis xoob, nws yuav tawg."
