Optimization thiab Fatigue Resistance Design ntawm Elastic Clip Structure hauv Fastening Systems
Dab tsi yog cov qauv qauv thiab cov xwm txheej siv tau ntawm elastic rail clips?
Hom I, Hom II, Hom III, W1, W2, SKL series, thiab DTV series. Hom I thiab Hom II elastic rail clips muaj cov qauv yooj yim thiab cov nqi qis, yog siv rau cov pa nrawm nrawm nrawm, muaj qhov nruab nrab clamping siab, thiab yooj yim los tswj. Hom III elastic rail clips yog boltless fasteners, nrog ib tug compact qauv, siab clamping siab, thiab muaj zog zuag qhia tag nrho kev ncaj ncees, haum rau siab - ceev, hnyav - load ballasted lem. SKL thiab DTV series yog elastic, cais cov fasteners, nrog rau kev hloov kho muaj zog, kev ua haujlwm zoo rwb thaiv tsev, thiab txo kev co zoo heev, thiab feem ntau yog siv hauv ballastless lem, subways, thiab siab - kev tsheb ciav hlau ceev. Rau me me - vojvoog curves, slopes, thiab turnout cheeb tsam, reinforced elastic rail clips nrog siab clamping siab feem ntau xaiv los tiv thaiv ntau dua lateral zog thiab kev co.
Dab tsi yog qhov ua rau qaug zog tawg hauv elastic rail clips?
Ua ntej, cov qauv kev ntxhov siab concentration; siab- thaj tsam kev ntxhov siab yooj yim tsim ntawm kev hloov pauv ntawm arc thiab sib txawv ntawm tus ntoo khaub lig- ntu qhov chaw, qhov chaw tawg feem ntau pib. Thib ob, kev teeb tsa tsis sib xws; kev sib cuag tsis zoo ntawm lub elastic rail clip thiab rail puag / puag phaj, ua rau muaj kev ntxhov siab ntau hauv zos. Thib peb, tsis tsim nyog preload: ntau lub zog ua rau lub caij nplooj ntoos hlav clip tawm los, thaum tsis txaus torque ua rau rov ua dua kev co thiab cuam tshuam. Plaub, cov khoom siv tsis xws luag: suav nrog, decarburization, tawg, thiab tsis sib xws tuaj yeem ua rau qaug zog. Thib tsib, corrosive ib puag ncig: xeb tsim defects nto, accelerating qaug zog tawg. Thib rau, cuam tshuam ntau dhau: cov kab tsheb ciav hlau tsis sib xws, cov pob qij txha tsis zoo, thiab tawm - ntawm - lub log tuaj yeem ua rau muaj kev cuam tshuam sai heev.
Dab tsi yog cov lus qhia tseem ceeb rau optimizing lub caij nplooj ntoos hlav clip qauv?
Txhim kho lub vojvoog ntawm curvature los ntawm kev ua kom cov arc nyob rau hauv cov cheeb tsam kev ntxhov siab los tsim kom muaj kev hloov pauv thiab txo qis kev ntxhov siab. Ua kom zoo ntawm tus ntoo khaub lig- ntu cov duab thiab qhov dav faib kom ntseeg tau tias muaj kev ntxhov siab tsis sib xws raws li lub caij nplooj ntoos hlav clip caj npab thiab tsis txhob muaj ntau dhau hauv zos. rationally tsim lub limb ntev thiab nruj kom paub meej txaus elasticity thiab deformation, txo qhov dynamic - rau - static stress ratio. Txhim kho cov ntsiab lus txhawb nqa thiab cov ntsiab lus tiv tauj kom ntseeg tau tias lub caij nplooj ntoos hlav clip tseem nyob rau hauv kev sib cuag, tsis warp, thiab tsis eccentrically loaded nyob rau hauv nws ua hauj lwm ntau yam. Siv finite element simulation rau rov xam cov quab yuam, kev nyuaj siab amplitude, thiab qaug zog lub neej los txiav txim qhov zoo geometric tsis.
Yuav ua li cas lub caij nplooj ntoos hlav clip cov ntaub ntawv thiab kev kho cua sov yuav tsum phim nrog cov qauv tsim?
Cov ntaub ntawv tseem ceeb yog lub caij nplooj ntoos hlav steels xws li 60Si2MnA thiab 55SiCr, uas muaj siab elastic txwv, siab yield zog piv, thiab zoo toughness. Kev kho cua sov siv quenching ua raws li qhov nruab nrab- qhov kub thiab txias kom tau txais cov qauv tempered troostite, ntsuas lub zog, elasticity, thiab toughness, nrog hardness tswj ntawm HRC42 thiab 48. Surface reinforcing, xws li txhaj tshuaj peening, yog siv rau cov kev ntxhov siab tseem ceeb -cov cheeb tsam ntawm lub caij nplooj ntoos hlav tseem ceeb thiab kev nyuaj siab los qhia txog kaum qhov kev nyuaj siab. txhim kho lub neej qaug zog. Kev tswj nruj nruj yog tswj xyuas cov kev kho cua sov tsis xws li decarburization, tawg, thiab overheating los xyuas kom meej batch stability.
Yuav ua li cas mus cuag lub neej ntawm lub caij nplooj ntoos hlav clip los ntawm installation thiab txij nkawm?
Tighten nruj raws li tus tsim torque, zam dhau - zawm los yog hauv qab - zawm. Xyuas kom lub caij nplooj ntoos hlav clip raug ntsia kom raug, zoo haum rau lub hauv paus rail thiab ncoo, tsis muaj skewing los yog txawv teb chaws khoom. Txo cov voj voog soj ntsuam hauv cov ntu nkhaus, qhov chaw tig tawm, thiab ntu hloov pauv, hloov tam sim ntawd cov kab tawg, xoob, thiab xeb lub caij nplooj ntoos hlav. Tsis txhob ntxhib installation los ntawm hammering los tiv thaiv kev puas tsuaj ntawm nto thiab kev nyuaj siab concentration. Siv cov tshuaj tiv thaiv-corrosion caij nplooj ntoos hlav clips (galvanized, Dacromet) nyob rau hauv corrosive ib puag ncig kom txo corrosion qaug zog.