Cov qauv tsim thiab kev ua tau zoo ntawm kev sib xyaw ua ke ntawm cov ntaub qhwv
Cov yam ntxwv ntawm cov roj hmab -steel phaj composite rail ncoo yog dab tsi?
Cov txheej txheem tseem ceeb ntawm cov roj hmab- steel phaj composite rail ncoo yog ib lub phaj hlau nyias nyob rau hauv nruab nrab txheej thiab cov roj hmab txheej nyob rau sab sauv thiab qis txheej, uas yog nruj nreem sib xyaw los ntawm cov txheej txheem kub vulcanization. Lub thickness ntawm nyias steel phaj feem ntau yog 0.5-1mm, thiab cov khoom siv feem ntau yog qis- carbon steel, uas ua lub luag haujlwm hauv kev txhim kho qhov nruj thiab kev coj tus kheej ntawm lub ncoo thiab zam dhau qhov deformation ntawm lub ncoo hauv qab load. Lub thickness ntawm cov roj hmab sab saud thiab qis yog tsim raws li kab yuav tsum tau ua. Rau siab- cov kab ceev, cov roj hmab txheej yog tuab dua, txog 5-8mm, txhawm rau txhim kho qhov kev vibration txo; rau cov kab hnyav, cov roj hmab txheej yog thinner, txog 3-5mm, thiab cov kabmob muaj peev xwm txhim kho nrog cov hlau phaj. Lub ntug ntawm lub ncoo sib xyaw txais yuav ib qho kev hloov pauv kev tsim los tiv thaiv cov roj hmab txheej los ntawm kev tawg vim kev ntxhov siab. Cov qauv no paub txog kev sib xyaw ua ke zoo tshaj plaws ntawm kev txo qis elasticity ntawm cov roj hmab thiab cov kabmob nruj ntawm cov phaj steel, thiab nws qhov kev ua tau zoo tshaj plaws ntawm cov ntaub ntawv ib leeg.
Dab tsi yog lub hauv paus ntsiab lus ntawm cov khoom siv ua haujlwm sib koom ua ke ntawm kev sib txuas rail pads?
Lub hauv paus ntsiab lus ntawm kev ua tau zoo ntawm cov khoom siv sib koom ua ke ntawm cov khoom siv sib xyaw ua ke yog siv cov khoom sib txuas ua ke ntawm cov khoom sib txawv los ua kom muaj kev ua haujlwm tsis zoo ntawm ib qho khoom siv. Siv cov roj hmab- steel phaj composite rail ncoo ua piv txwv, cov khoom siv roj hmab muaj qhov elasticity zoo thiab kev co txo kev ua haujlwm, tab sis tsis muaj peev xwm thiab hnav tsis kam; steel phaj cov ntaub ntawv muaj zog bearing muaj peev xwm thiab siab nruj, tab sis tsis muaj kev vibration txo cov nyhuv. Tom qab sib xyaw ua ke ob, cov roj hmab txheej yog lub luag haujlwm rau kev nqus cov tsheb ciav hlau kev co thiab buffering cuam tshuam loads, thiab steel phaj txheej yog lub luag hauj lwm rau bearing ntsug loads thiab limiting pad deformation. Ob leeg ua hauj lwm ua ke los ua kom cov ntaub ntawv sib xyaw ua kom muaj kev vibration zoo heev thiab muaj peev xwm ntawm tib lub sijhawm. Rau polyurethane-fiber composite pads, polyurethane muab elasticity thiab hnav tsis kam, thiab cov txheej fiber ntau txhim khu lub zog tensile los tiv thaiv cov ntaub qhwv tearing, uas kuj ua tiav kev sib koom ua ke. Qhov kev sib koom ua ke no ua rau cov ntaub qhwv sib xyaw kom tau raws li ntau- kev ua tau zoo raws li kev ua haujlwm nyuaj.
Dab tsi yog qhov kev tsim qauv tsim ntawm cov khoom sib xyaw rail pads rau siab - kab nrawm?
Thawj qhov kev tsim qauv yuav tsum tau ua ntawm kev sib xyaw rail pads rau siab - cov kab ceev yog kom muaj cov qauv elastic, feem ntau yog tswj ntawm 20-30kN / mm, kom phim tag nrho cov tawv nqaij ntawm qhov siab - nrawm nrawm thiab xyuas kom meej tias lub log -rail dynamic teb yog nyob rau hauv qhov tsim nyog. Qhov thib ob yog kev tsim qauv symmetry. Lub thickness ntawm cov khaubncaws sab nraud povtseg sab sauv thiab sab qis yuav tsum zoo ib yam, thiab cov hlau phaj yog teem rau hauv nruab nrab kom ntseeg tau tias muaj kev ntxhov siab nyob rau hauv lub ncoo thiab tsis txhob rail inclination vim tsis sib xws kev nyuaj siab. Qhov thib peb yog ntug sealing tsim. Lub ntug ntawm lub ncoo yuav tsum tau muab ntim tag nrho los tiv thaiv cov dej noo thiab impurities los ntawm kev nkag mus rau hauv kev sib txuas ntawm cov hlau phaj thiab roj hmab, cuam tshuam rau cov khoom sib xyaw. Tsis tas li ntawd, qhov saum npoo ntawm lub ncoo yuav tsum tau tsim los tiv thaiv- cov ntaub nplaum nplaum los txhim kho kev sib txhuam nrog cov tsheb ciav hlau thiab pw tsaug zog thiab tsis txhob pad slippage thaum lub tsheb ciav hlau ua haujlwm. Lub rationality ntawm cov qauv tsim ncaj qha txiav txim siab seb lub siab-ceev composite pad tuaj yeem ua tau raws li cov kev xav tau ntawm kev ceev ntawm 350km / h.
Cov txheej txheem kub vulcanization cuam tshuam li cas rau kev ua haujlwm ntawm cov ntaub ntawv sib txuas?
Cov txheej txheem kub vulcanization yog cov txheej txheem tseem ceeb rau kev tsim cov khoom sib xyaw rail pads, thiab nws cov txheej txheem tsis ncaj qha cuam tshuam rau lub zog sib xyaw thiab kev ua haujlwm ruaj khov ntawm cov ntaub qhwv. Qhov kub vulcanization kub feem ntau yog tswj ntawm 150-180℃. Tsis tshua muaj kub yuav ua rau tsis tiav vulcanization ntawm cov roj hmab, tsis txaus elasticity ntawm cov roj hmab txheej, thiab tsis tshua muaj kev sib raug zoo nrog cov hlau phaj; kub siab heev yuav ua rau cov roj hmab muaj hnub nyoog thiab txo cov kev pab cuam lub neej ntawm lub ncoo. Lub siab vulcanization yuav tsum tau khaws cia ntawm 3-5MPa. Lub siab txaus tuaj yeem ua rau cov roj hmab tag nrho cov micropores ntawm cov hlau phaj nto, txhim khu lub zog sib txuas, thiab tsis txhob delamination. Lub sij hawm vulcanization yog hloov raws li lub thickness ntawm lub ncoo, feem ntau 15-30 feeb, los xyuas kom meej tag nrho vulcanization ntawm cov roj hmab. Cov ntaub ntawv sib xyaw ua los ntawm cov txheej txheem kub kub vulcanization muaj lub zog sib txuas ntawm ntau tshaj 1.5MPa, uas tuaj yeem tswj cov qauv kev ruaj ntseg nyob rau hauv lub sij hawm ntev load thiab nws cov kev ua tau zoo yuav tsis lwj.
Dab tsi yog qhov zoo ntawm cov ntaub ntawv sib xyaw ua ke piv nrog ib qho - cov ntaub ntawv?
Thawj qhov kom zoo dua ntawm kev sib xyaw rail pads piv nrog cov roj hmab ib leeg yog lub peev xwm muaj zog dua. Qhov sib ntxiv ntawm nruab nrab steel phaj txheej zoo heev txhim kho qhov txhav ntawm lub ncoo, tuaj yeem dais loj dua ntsug loads, thiab tsis txhob concave deformation ntawm lub ncoo. Piv nrog rau ib leeg steel phaj pads, qhov kom zoo dua yog zoo heev kev co txo cov nyhuv. Cov roj hmab txheej tuaj yeem nqus tau kev co, txo lub log- tsheb ciav hlau suab nrov, thiab txhim kho kev tsav tsheb. Piv nrog ib qho polyurethane pads, qhov zoo dua yog kev ua haujlwm zoo, uas muaj ob qho tib si elasticity, muaj peev xwm thiab hnav tsis kam, thiab ntau yam kev siv. Tsis tas li ntawd, kev pab cuam lub neej ntawm cov ntaub ntawv sib xyaw yog ntev dua. Ib leeg- cov ntaub qhwv ntsej muag yog qhov ua tsis tiav ntxov vim qhov ua haujlwm tsis zoo, thaum cov ntaub qhwv sib xyaw tuaj yeem hloov mus rau ntau qhov kev ua haujlwm nyuaj los ntawm cov khoom siv sib koom ua ke, thiab lawv lub neej kev pabcuam yog 2-3 npaug ntawm ib zaug- cov ntaub ntawv. Qhov kom zoo dua ntawm kev ua tau zoo ua rau cov khoom sib xyaw ua ke yog thawj qhov kev xaiv rau siab - ceev thiab hnyav-haul kab.