Taug qab spike thread anti-loosing qauv tsim thiab ruaj khov txhim kho nyob rau hauv vibration load
Dab tsi yog cov qauv tsim qauv thiab kev tiv thaiv -loosing hauv paus ntsiab lus ntawm cov xov anti-loosing qauv ntawm spikes?
Cov qauv tsim qauv ntawm cov xov tiv thaiv -loosing qauv ntawm spikes yogsawtooth xov ua ke nrog nylon xauv ceev, thiab ob lub qauv ua haujlwm ua ke kom ua tiav ob qho kev tiv thaiv -looning. Cov hniav profile ntawm sawtooth xov yog asymmetrically tsim, nrog ib tug 30℃hniav profile lub kaum sab xis ntawm lub load- bearing sab thiab ib tug 60℃hniav profile lub kaum sab xis ntawm qhov tsis yog -load- bearing sab. Qhov kev tsim no tuaj yeem hloov lub zog axial tsim los ntawm kev vibration load rau hauv lub zog nias ntawm cov xov, es tsis txhob loosening tivthaiv quab yuam ntawm ib txwm triangular threads, zoo heev txo qhov tshwm sim ntawm loosening. Lub puab lub qhov ntawm lub nylon xauv txiv ntseej yog embedded nrog ib tug nplhaib - zoo li tus nylon nplhaib, uas lub puab txoj kab uas hla yog me ntsis tsawg tshaj li lub loj txoj kab uas hla ntawm lub spike thread. Thaum cov txiv ntseej nruj, lub nplhaib nylon yuav raug nyem thiab deformed los ntawm cov xov thiab sau cov xov sib txawv los ua ib qho elastic locking quab yuam. Txawm tias nyob rau hauv vibration load, elastic rov qab quab yuam ntawm lub nylon nplhaib tuaj yeem tswj kev sib txhuam ntawm cov xov. Tsis tas li ntawd, cov xov nto ntawm qhov ntsia hlau loj yog galvanized thiab passivated, nrog rau qhov sib txhuam coefficient ntawm qhov chaw ruaj khov ntawm 0.18-0.22, zam kev poob ua ntej los ntawm kev sib txhuam coefficient fluctuation. Qhov kev tiv thaiv-loosing qib ntawm cov khoom sib xyaw no tiv thaiv-loosing qauv tuaj yeem ncav cuag qib 4 ntawm ISO 10964 tus qauv, uas yog siab dua li qib 2 ntawm cov qauv kev tiv thaiv ib txwm muaj.
Dab tsi yog qhov kev tiv thaiv -loosing kev ua tau zoo sib txawv ntawm anti-loosing qauv spikes thiab tsoos spikes?
Kev tiv thaiv -loosing kev ua tau zoo sib txawv ntawm anti-loosing qauv spikes thiab ib txwm spikes yog feem ntau cuam tshuam nyob rau hauv peb yam: vibration loosening lub sij hawm, preload retention rate thiab reusability. Nyob rau hauv tib lub vibration load test, lub anti-loosing qauv spikes pom tsis muaj cov tsos mob ntawm loosening tom qab 1 lab vibrations, nrog ib tug preload retention tus nqi siab tshaj los yog sib npaug rau 90%, thaum cov tsoos spikes pom pom tseeb loosening tom qab 100,000 vibrations, nrog preload retention tus nqi poob qis dua 60%. Hauv daim ntawv thov kab tiag tiag, lub voj voog kev saib xyuas ntawm kev tiv thaiv -loosing qauv spikes tuaj yeem txuas ntxiv mus rau 2 xyoos, thaum cov tsoos spikes tsuas yog 6 lub hlis, txo cov nqi saib xyuas phau ntawv. Nyob rau hauv cov nqe lus ntawm reusability, lub nylon xauv txiv ntseej ntawm lub anti-loosing qauv spike tuaj yeem tiv taus 3-5 disassembly thiab reassembly lub sij hawm thiab tseem tuav tau zoo los tiv thaiv{17}}loosing nyhuv, thaum lub anti{18}}loosing kev ua tau zoo ntawm cov tsoos caij nplooj ntoos hlav ntxhua khaub ncaws anti- lub sij hawm ua tsis tiav. Tsis tas li ntawd, cov txheej txheem los tiv thaiv xoob spikes muaj kev cuam tshuam zoo dua. Nyob rau hauv qhov kev cuam tshuam tam sim ntawd, qhov xoob ntawm cov xov txuas yog tsawg dua los yog sib npaug rau 0.1 hli, thaum cov tsoos spikes tuaj yeem ncav cuag ntau dua 0.5 hli.
Dab tsi yog qhov yuav tsum tau hloov ntawm kev tiv thaiv -loosing qauv spikes rau ntau hom pw tsaug zog?
Cov kev hloov pauv ntawm kev tiv thaiv -loosing qauv spikes rau ntau hom pw tsaug zog yog qhov tseem ceeb rau kev sib piv cov yam ntxwv ntawm cov khoom siv thiab cov kev xav tau ntawm cov neeg pw tsaug zog. Pob zeb pw tsaug zog yog ib qho nyuaj ntawm cov khoom siv thiab muaj cov kev xav tau siab rau kev sib tsoo lub zog. Nws yog ib qho tsim nyog los siv ntxhib-pitch sawtooth xov spikes nrog txoj kab uas hla ntawm 24mm. Lub hardness ntawm lub nplhaib nylon ntawm lub nylon xauv txiv ntseej yog Shore 85HA, thiab lub zog torque yog 300-350N·m kom ntseeg tau tias lub zog ruaj khov ntawm cov ntsia hlau loj thiab cov pob zeb ua haujlwm yog ntau dua lossis sib npaug rau 120kN. Ntoo pw tsaug zog yog mos hauv cov khoom siv thiab ua rau txoj hlua khi. Nws yog ib qho tsim nyog yuav tsum tau siv zoo{18}}pitch sawtooth xov spikes nrog txoj kab uas hla ntawm 20mm, xov qhov siab yog txo los ntawm 0.2mm, lub hardness ntawm lub nylon nplhaib ntawm nylon xauv txiv ntseej yog Shore 75HA, thiab lub zawm torque yog 200-250N·m kom tsis txhob sib cais ntawm cov ntoo ntau dhau los ntawm cov ntoo. Lub elastic modulus ntawm composite sleepers yog ntawm pob zeb thiab ntoo. Nws yog ib qho tsim nyog yuav tsum siv cov xov paj nruab nrab nrog lub cheeb ntawm 22 hli, qhov nyuaj ntawm lub nplhaib nylon yog Shore 80HA, thiab lub zog nruj yog 250-300N·m, ntsuas qhov sib npaug ntawm lub zog thiab kev tiv thaiv pw tsaug zog. Tsis tas li ntawd, cov neeg pw tsaug zog hauv thaj tsam alpine yog qhov ua rau lub zog tensile vim qhov kub thiab txias, yog li cov tshuab ntxhua khaub ncaws yuav tsum tau ntxiv rau hauv qab ntawm cov spikes kom tsis txhob cuam tshuam qhov kub ntxhov ntawm cov xov txuas.
Dab tsi yog cov ntsiab lus tseem ceeb ntawm kev ua haujlwm ntawm kev tiv thaiv -loosing spikes?
Cov ntsiab lus tseem ceeb ntawm cov txheej txheem thev naus laus zis ntawm kev tiv thaiv -loosing qauv spikes yog concentrated nyob rau hauv xov tsim thiab nylon nplhaib embedding kom ruaj khov tiv thaiv -loosing kev ua tau zoo. Lub sawtooth xov yog ua tiav los ntawm xov dov tshuab. Cov hniav profile raug ntawm cov xov dov lub log yuav tsum ncav cuag ISO 4H qib. Cov xov dov siab thaum ua tiav yog tswj ntawm 80-100MPa kom ntseeg tau tias cov xov hniav profile tiav yam tsis muaj burrs, thiab cov hniav profile lub kaum sab xis sib txawv ntawm cov load- bearing sab thiab tsis yog -load- bearing sab yog tsawg dua los yog sib npaug rau ± 0.5℃. Tom qab ua cov xov, galvanizing thiab passivation kev kho mob yuav tsum tau, cov txheej thickness yog tswj ntawm 8-12μm, thiab cov ntsev tsuag tshuaj tiv thaiv lub sij hawm ntawm cov zaj duab xis passivation yog ntau tshaj los yog sib npaug rau 500 teev los txhim kho kev tiv thaiv -corrosion kev ua tau zoo. Cov txheej txheem embedding ntawm nylon xauv txiv ntseej yog ua los ntawm cov xovxwm tshwj xeeb -fitting tshuab. Lub nplhaib nylon yog rhuab mus rau 80-90℃kom soften, ces nias rau hauv lub txiv ntseej lub qhov, thiab cov xovxwm-fitting siab yog tswj ntawm 5-8MPa los xyuas kom meej tias lub nylon nplhaib yog ze ze rau lub txiv ntseej puab qhov tsis loosening los yog ntog. Tom qab ua tiav, random tshuaj xyuas ntawm kev ua haujlwm los tiv thaiv xoob yog xav tau nrog qhov piv txwv ntawm 3%. Tus nqi preload retention yog kuaj los ntawm lub tshuab kuaj vibration, thiab cov khoom tsis tsim nyog yuav tsum tau rov ua haujlwm dua.
Dab tsi yog qhov ntawm - qhov chaw teeb tsa thiab kev saib xyuas cov ntsiab lus ntawm kev tiv thaiv -loosing qauv spikes?
Qhov ntawm -qhov chaw teeb tsa thiab kev saib xyuas ntawm kev tiv thaiv-loosing qauv spikes yuav tsum tau tsom rau cov txiv ntseej nruj ib ntus thiab kev tshuaj xyuas nylon nplhaib. Thaum lub sij hawm installation, tus ntsia hlau loj yuav tsum tau xub ntsia rau hauv lub qhov anchoring ntawm lub sleeper, nrog rau qhov tob ntawm lub qhov tob yog 2/3 ntawm qhov ntev ntawm qhov ntev, ces lub elastic washer yog muab tso rau, thiab ces lub nylon xauv txiv ntseej yog nruj nreem. Cov txheej txheem nruj yuav tsum tau ua nyob rau hauv ob kauj ruam: thawj kauj ruam yog kom nruj rau 50% ntawm lub zog torque, thiab lub thib ob kauj ruam yog kom nruj rau tus tsim torque kom tsis txhob muaj kev puas tsuaj rau lub nylon nplhaib los ntawm ib tug - sij hawm nruj. Tom qab kev teeb tsa, nws yog ib qho tsim nyog los xyuas qhov perpendicularity ntawm qhov ntsia hlau loj, nrog lub perpendicularity sib txawv tsawg dua los yog sib npaug li 1℃los tiv thaiv lub zog tsis sib xws los ntawm qhov sib txawv ntawm qhov sib txawv. Thaum lub sij hawm tu, nws yog ib qho tsim nyog yuav tsum tsis tu ncua xyuas cov xwm txheej ntawm cov nylon xauv txiv ntoo. Yog hais tias lub nplhaib nylon yog tawg, deformed los yog detached, lub txiv ntoo yuav tsum tau hloov nyob rau hauv lub sij hawm; Yog hais tias cov xov nto yog xeb, nws yuav tsum tau ntxuav nrog ib tug hlau hlau txhuam thiab coated nrog anti{12}} xeb roj. Tsis tas li ntawd, cov wrenches tshwj xeeb yuav tsum tau siv thaum disassembling lub spikes, thiab cov cuab yeej cuam tshuam yuav tsum tau zam kom tsis txhob muaj kev puas tsuaj rau cov hniav profile ntawm sawtooth xov. Cov spikes disassembled yuav tsum tau kuaj xyuas cov xov puas, thiab tsuas yog cov uas tsis muaj kev puas tsuaj tuaj yeem rov siv dua.