Anti-loosing qauv tsim ntawm railway spikes thiab lawv adaptation rau lub dynamic runout ntawm hloov rails nyob rau hauv turnout cheeb tsam
Vim li cas qhov kev tiv thaiv -loos cov kev cai rau spikes ntawm kev hloov taw tes rails nyob rau hauv turnout cheeb tsam deb tshaj cov rau spikes ntawm cov kab zoo tib yam?
Rail tshem tawm ntawm cov kab zoo tib yam yog qhov ntev ntawm qhov nkag thiab qhov me me rau sab nraud, nrog cov khoom ruaj khov dynamic loads. Nyob rau hauv cov cheeb tsam turnout, hloov point rails ua reciprocating "kaw-sib cais" txav uas tau tsav los ntawm point machines; Meanwhile, thaum lub tsheb ciav hlau hla, cov ntsiab lus rails tsimntsug dynamic bouncingnrog rau qhov amplitude txog li 3-5mm, synchronized nrog qhov cuam tshuam zaus ntawm lub tsheb ciav hlau log. Qhov no reciprocating bouncing kawm cov spikes mus ua ke alternating nro, compression, thiab shear loads, ua dog dig anti-loosing qauv uas yuav ua tsis tau tejyam. Spike loosening txo qhov kev sib cuag nruj ntawm cov taw tes thiab cov tsheb ciav hlau, ua rau lub tsheb ciav hlau derailment - yog li, cov kev xav tau los tiv thaiv kev xoob yog nruj dua.
Dab tsi yog qhov classic mechanical locking anti-loosing structure designs for spikes that adapt to the dynamic bouncing of switch point rails?
Classic mechanical locking designs adapted to point rails muaj ob hom: 1)Muab ob npaug rau- pob ntseg kaw- ob lub pob ntseg ntawm lub tshuab ntxhua khaub ncaws yog feem ntau buckled rau ntawm cov ntsia hlau ntsia hlau loj thiab lub protrusion ntawm lub sleeper, tsim mechanical locking los tiv thaiv cov txiv ntoo rotation, thiab elasticity ntawm lub tshuab ntxhua khaub ncaws tuaj yeem hloov mus rau qhov me bouncing ntawm taw tes; 2)Wedge-locking txiv ntseej- cov txiv ntseej muaj cov kab nrib pleb uas kaw nruj dua nyob rau hauv kev vibration tom qab zawm, zoo tiv thaiv kev hloov pauv ntawm cov ntsiab lus rail bounce. Ob qho qauv tsim muaj "xoom- tshem tawm kev kaw," kom tsis txhob xoom qhov khoob hauv qhov kev tiv thaiv -loosing qauv tshwm sim los ntawm bouncing.
Dab tsi yog qhov txwv ntawm "xov nplaum-coated" los tiv thaiv-loosing spikes nyob rau hauv daim ntawv thov ntawm hloov taw tes rails nyob rau hauv turnout chaw?
Xov nplaum-coated spikes tsim kev sib txuas ntawm kev sib txuas los ntawm anaerobic adhesive siv rau cov xov, uas kho thiab tawv. Lawv cov kev txwv feem ntau yog tshwm sim hauv peb lub ntsiab lus: 1)Tsis txaus kub tsis kam-kev sib txhuam cov cua sov uas tsim los ntawm kev hloov qhov taw qhia tuaj yeem nce qhov kub kom siab tshaj 60 degree, softening anaerobic adhesive thiab txo kev tiv thaiv-loosing kev ua tau zoo; 2)Tsis yog -reusability-spikes yuav tsum tau muab tshem tawm thaum lub sij hawm taw tes rail txij nkawm, ua rau cov nplaum txheej; reapplication ntawm nplaum yog yuav tsum tau rau reinstallation, txo kev tsim kho efficiency; 3)Tsis muaj zog shear kuj- shear quab yuam los ntawm taw tes rail bounces yooj yim ua tsis tau cov txheej txheem, ua rau spike loosening. Yog li ntawd, nplaum -coated anti- loosening tsuas yog tsim nyog rau cov uas tsis yog - txav cov khoom nyob rau hauv turnouts thiab yog nruj me ntsis txwv tsis pub rau taw tes rail fixation.
Rau kev sib xyaw ua ke ntawm "sab laug oscillation + ntsug bouncing" ntawm taw tes rails, yuav ua li cas los tiv thaiv -loosing qauv ntawm spikes ua tiav "bidirectional restraint"?
Lub hauv paus ntawm bidirectional restraint yog ib qho kev sib xyaw tsim ntawm "Kev sib txhuam txhim kho + mechanical locking." A serrated anti-loosing washeryog ntsia nruab nrab ntawm cov ntsia hlau loj thiab cov pw tsaug zog; cov serrations ntawm lub tshuab ntxhua khaub ncaws tom rau hauv qhov chaw pw tsaug zog, txhim kho lateral kev sib txhuam tsis kam thiab constraining lateral oscillation ntawm qhov taw tes rail. Acaij nplooj ntoos hlav lock washeryog ntsia nyob rau hauv lub spike txiv ntoo; qhov nruam elastic siab ntawm lub caij nplooj ntoos hlav ntxhua khaub ncaws offsets qhov sib txawv uas tshwm sim los ntawm ntsug bouncing ntawm lub taw tes rail, tuav lub spike preload, thiab koom tes nrog lub wedge - xauv txiv ntseej los tsim mechanical locking. Cov qauv sib xyaw no tiv thaiv ob qho tib si sab nraud shear thiab yoog mus rau ntsug bouncing, zoo kawg nkaus sib xyaw ua ke ntawm lub xeev ntawm cov taw tes.
Yuav ua li cas thim rov qab txiav txim qhov tsis ua hauj lwm ntawm kev tiv thaiv kev tiv thaiv -loosing cov qauv los ntawm kev hloov chaw tsheb ciav hlau nruj kev soj ntsuam cov ntaub ntawv thaum lub sij hawm ntawm - thaj chaw tu?
A hloov point rail nruj contact testeryog siv los ntsuas qhov sib txawv ntawm cov ntsiab lus tsheb ciav hlau thiab cov tsheb ciav hlau, tsom mus rau "dawb txav deb" ntawm cov ntsiab lus traction. Yog hais tias qhov kev ncua deb ntawm qhov pub dawb tshaj li 0.5 hli thiab nce ntxiv tom qab lub tsheb ciav hlau hla, nws qhia tau hais tias cov spikes kho qhov taw tes rail tau loosened thiab anti-loosing qauv tau ua tsis tiav. Tsis tas li ntawd, soj ntsuam covlub kaum sab xis tigntawm cov txiv ntseej spike -yog tias qhov chaw txheeb ze ntawm cov txiv ntoo thiab cov ntsia hlau loj hloov pauv (piv txwv li, qhov tsis zoo ntawm cov cim kab), lossis yog tias lub pob ntseg ntawm lub xauv lub tshuab ntxhua khaub ncaws tawg lossis tshem tawm, cov no yog cov pov thawj ncaj qha ntawm kev tiv thaiv -loosing qauv tsis ua haujlwm. Thaum tshawb pom, spikes uas muaj txiaj ntsig los tiv thaiv -loosing cov qauv yuav tsum tau hloov tam sim ntawd, thiab cov ntsiab lus tsheb ciav hlau nruj yuav tsum tau hloov kho.