Rail Defects: Wave Wear
Oct 13, 2023| Txoj kev kuaj
① Kev soj ntsuam pom thiab pab 1m ntsuas hluav taws xob ntsuas.
② Nruab lub sensor rau ntawm lub tsheb kuaj kev tsheb ciav hlau thiab siv txoj hlua los yog txoj kev inertia los ntsuas; txoj hlua txoj kev siv txoj kev tsheb ciav hlau tread duab tau los ntawm lub sensor, thiab ntsuas cov kab txuas ntawm ob qhov ntsuas ntawm txoj kev tsheb ciav hlau raws li kev ntsuas chord, nrog rau qhov nruab nrab ntsuas qhov taw qhia txog qhov zoo vector ntawm chord yog siv los ntsuas tus nqi ntawm kev tsheb nqaj hlau. hnav corrugation; txoj kev inertial xam tus nqi corrugation los ntawm kev xam tus nqi acceleration rau qhov kev hloov.
ua rau
Qhov ua rau ntawm rail corrugation hnav yog qhov nyuaj. Qhov ua rau corrugation feem ntau tuaj yeem muab faib ua ob pawg: dynamic ua txoj kev xav thiab tsis yog qhov ua rau tsis muaj zog.
① Qhov ua rau muaj zog yog qhov kev vibration ntawm lub log-rail system tsim corrugation. Lub vibrations ua rau corrugation tuaj yeem muab faib ua peb pawg: tus kheej-excitation, resonance thiab tawm tswv yim vibration. Lub corrugation wavelength yog txuam nrog ib los yog ob peb daim ntawv vibration nyob rau hauv lub log-rail system.
② Tsis yog-dynamic ua rau ntseeg tau tias txawm tias lub log-rail quab yuam yog tus nqi tas li, corrugation yuav tshwm sim vim cov yas tsis sib xws los yog hnav, thiab lub wavelength ntawm corrugation yog random. Lub corrugation ntawm qhov nkhaus feem ntau ntseeg tau tias yog tshwm sim los ntawm qhov sib txawv tig radii ntawm lub wheelsets.
kev loj hlob tshwm sim
Rail corrugation yuav ua rau muaj kev vibrations ntawm cov tsheb ciav hlau thiab cov qauv khiav, ua suab nrov, cuam tshuam rau cov neeg caij tsheb kev nplij siab, thiab ua rau cov neeg ua haujlwm saib xyuas thiab cov nqi ntawm cov tsheb ciav hlau tu.
Kev tsim thiab kev loj hlob ntawm rail corrugation tsis tsuas yog cuam tshuam rau lub neej kev pab cuam ntawm locomotives, tsheb thiab khiav cov qauv, hnyav rail corrugation yuav ua rau lub tsheb ciav hlau derailment xwm txheej.
Mus kom ze
① Corrugation tuaj yeem ua tiav los ntawm kev sib tsoo (lossis milling): txoj kev sib tsoo yuav tsum tau txiav txim siab raws li qhov kev puas tsuaj ntawm qhov chaw thiab lub log-rail. Tom qab sib tsoo, qhov kev puas tsuaj yuav tsum tau ua kom raug tshem tawm. Ua ntej sib tsoo, qhov xwm txheej ntawm cov ntsia hlau hauv cheeb tsam yuav tsum tau muab tshuaj xyuas. Siv cov hlua. Profile meter lossis profile template ntsuas, raws li qhov chaw ntawm txoj kev tsheb ciav hlau, kev puas tsuaj ntawm cov tsheb ciav hlau thiab lub log-rail kev sib cuag, cov phiaj xwm polishing yog tsim raws li cov qauv tsim. Thaum lub sij hawm sib tsoo cov txheej txheem ntawm kev txhim kho cov tshuab loj, cov txiaj ntsig tom qab kev sib tsoo yuav tsum tau ntsuas thiab ntsuas raws sijhawm, thiab cov phiaj xwm sib tsoo yuav tsum tau kho kom ntseeg tau tias kev sib tsoo nyob rau hauv qhov chaw raws li qhov tsim profile.
Rau kev puas tsuaj saum npoo ntawm cov kab tsheb ciav hlau, milling thiab sib tsoo yuav tsum tau siv. Qhov zoo ntawm kev sib tsoo cov tsheb ciav hlau yuav tsum ua raws li cov qauv kev lees paub rau kev sib tsoo tsheb ciav hlau.
② Hauv qhov xwm txheej hnyav, lub tsheb ciav hlau yuav tsum tau hloov.
Ceev faj
Cov txheej txheem ntawm kev tsim corrugation yog qhov sib txawv, thiab kev tswj xyuas kev tswj hwm kuj txawv. Cov txheej txheem tseem ceeb los tswj kev sib txhuam ntawm cov kab nkhaus ntawm cov kab ua haujlwm hnyav suav nrog kev tsheb ciav hlau sib tsoo, kev tsheb ciav hlau lubrication, kev sib txhuam ntawm lub log-rail kev sib txhuam coefficient, ua kom cov tawv tawv ntawm cov ntaub ntawv nkhaus los txhim kho lawv cov hnav tsis kam, thiab hloov cov ntsia hlau.
Tsis tas li ntawd, ntxiv rau kev siv cov kev zoo sib xws saum toj no, cov yam ntxwv uas cuam tshuam corrugation kuj tuaj yeem raug tshem tawm los ntawm kev hloov thiab ua kom zoo ntawm cov qauv kev ua haujlwm, xws li txo cov kev tsis sib xws, nce kev khiav elasticity, siv qhov zoo tshaj plaws fastener vibration damping stiffness thiab pw tsaug zog. nrug, kawm txog kev sib raug zoo ntawm kev ceev, log-rail roughness excitation thiab rhiab heev ntawm khiav resonance yam ntxwv, thiab lwm yam.
