Sib Tsoo Pob Zeb Kev Ntsuas Kev Ntsuas

Sib Tsoo Pob Zeb Kev Ntsuas Kev Ntsuas

Qhov tseem ceeb tshaj plaws ntawm kev sib tsoo pob zeb txoj kev loj hlob yog nyob rau hauv kev ntsuam xyuas thiab txheeb xyuas nws cov kev ua tau zoo (nrog rau qhov loj thiab qhov tseeb, qhov sib npaug dynamic / zoo li qub, lub zog sib hloov, lub peev xwm thauj khoom, kev sib tsoo, thiab lwm yam), yog li qhia qhov kev tsim kho kom zoo ntawm nws cov qauv, txheej txheem, thiab cov qauv. Ntawm cov xwm txheej no, kev sib tsoo kev ua haujlwm ntawm cov pob zeb sib tsoo ua haujlwm ua tus sawv cev ntawm nws txoj haujlwm ua haujlwm tau zoo, tau txais txiaj ntsig zoo los ntawm cov kws tshawb fawb. Tam sim no, kev sib tsoo pob zeb kev ua haujlwm pov thawj cov cuab yeej tuaj yeem muab faib ua rau hom raws li qhov sib txawv ntawm cov ntaub ntawv txheeb ze ntawm kev sib tsoo pob zeb thiab kev tsheb nqaj hlau: 1) tsoos sib tsoo tshuab hom; 2) nyob ruaj ruaj thaiv rail hom; 3) linear rail pub hom; 4) ncig rail kab rov tav rotary pub hom; 5) high-speed rail sib tsoo sawv ntsug; thiab 6) tiag rail sib tsoo xeem kab.

(1) Hom Grinder Hom. Uhlmann et al. [1] tshawb xyuas qhov cuam tshuam ntawm kev sib tsoo tsis zoo ntawm qhov chaw zoo (hardness, roughness, dawb txheej thickness) ntawm cov ntsia hlau uas siv lub tshuab grinder depicted hauv daim duab 1. Wu li al. [2] txheeb xyuas tias lub pob zeb sib tsoo pob zeb txhim kho qhov zoo ntawm cov tsheb ciav hlau tom qab sib tsoo siv cov cuab yeej zoo sib xws. Hom kev sib tsoo no yog tus cwj pwm los ntawm kev sib tsoo pob zeb kab nrawm (txog 30-50 m / s) tab sis tus nqi qis qis (8-16 m / min) [2]; tib lub sijhawm, kev sib tsoo siab tsis yog kho tau. Yog li ntawd, tus tester no tsis tuaj yeem sim ua qhov kev sib tsoo tiag tiag thiab tsuas tuaj yeem muab cov ntaub ntawv siv rau kev kawm kev sib tsoo log.

Fig.1Nto sib tsoo tshuab kuaj tshuab[1]

(2) Chaw Nres Tsheb Rail Hom. Raws li kev ua haujlwm ntawm kev sib tsoo pob zeb rau kev tsheb ciav hlau sib tsoo, ntau tus kws tshawb fawb tau txuas lub cev muaj zog rau cov pob zeb sib tsoo thiab siv lub ntsej muag kawg ntawm cov pob zeb sib tsoo los sib tsoo cov rail workpiece. Kanematsu et al. [3] txheeb xyuas qhov kev sib tsoo ntawm ntau lub pob zeb sib tsoo siv cov rail sib tsoo tester qhia hauv daim duab 2. Gu li al. [4] hloov kho qhov sib tsoo tester nrog cov qauv zoo sib xws siv kev sib txhuam kev sim ntsuas los kawm txog kev sib tsoo ntawm cov pob zeb sib tsoo nrog ntau qhov sib txawv abrasive. Hom kev sim tshuab no tuaj yeem ua tau zoo dua qhov kev sib hloov ceev ntawm cov pob zeb sib tsoo, sib tsoo siab, thiab lwm yam tab sis tsis tuaj yeem ua tiav qhov kev sib tsoo pub mov. Kev sib tsoo ntev ntawm thaj chaw tsheb ciav hlau hauv cheeb tsam yuav ua kom qhov kub ntawm qhov sib cuam tshuam vim kev sib tsoo kub, ua rau kev ua haujlwm ntawm cov pob zeb sib tsoo pob zeb ntawm qhov kub thiab txias thiab txo lub zog tuav. Tsis tas li ntawd, nyob rau hauv kev cuam tshuam ntawm kev sib tsoo cua sov, lub tsheb ciav hlau yog nquag hlawv. Yog li ntawd, cov txheej txheem kev sim ntawm hom kev sim tshuab no yuav tsum xav txog qhov cuam tshuam ntawm kev sib tsoo kub ntawm qhov kev sim.

Fig.2Block Rail Fixed Sib Tsoo Tester[3]

(3) Linear Rail Feed Hom. Txhawm rau daws qhov teeb meem kev noj zaub mov hauv tsheb ciav hlau sib tsoo tshuab ntawm Gu et al. [4], Zhou Kun [80] siv lub khib thiab pinion los tsav lub bar rails, enabling unidirectional, linear rail noj los ntawm 1.6 mus rau 4.0 km / h, raws li qhia nyob rau hauv daim duab 3. Lub tshuab sim kuj tau siv los kawm txawv kev sib tsoo (sib tsoo siab [5], feed rate [6]). Huang Guigang [8] hloov cov qauv tseem ceeb ntawm BM2015 gantry planer los tsim ib txoj kab ntsug ntsug sib tsoo tester, piav qhia hauv daim duab 4. Cov cuab yeej siv 60 kg / m gauge rail on-site, nrog rau simulated pub ceev ntawm 0.3 ~ 4.5 km / h, thiab tuaj yeem ua tiav kev sib tsoo ntawm ± 5 °. Cov cuab yeej ua tiav qhov kev sib tsoo ntawm qhov tsim CBN sib tsoo log. Txoj kev tsheb ciav hlau sib tsoo ua haujlwm ceev yog li ntawm 3 ~ 24 km / h, thaum lub sijhawm simulated los ntawm hom kev tsheb nqaj hlau sib tsoo cov cuab yeej qis dua, txwv nws qhov kev sim muaj peev xwm.

Fig.3Kab rov tav Linear Rail Feed Sib Tsoo Tester[5,6,7]

Fig.4Vertical Linear Rail Feed Sib Tsoo Tester[8]

(4) Lub voj voos kab rov tav Rotary pub hom. Suav Academy ntawm Railway Sciences [9], Nanjing University of Aeronautics thiab Astronautics [10,11], thiab Kuffa et al. ntawm Switzerland [12] qhia ib ncig rail kab rov tav rotary feed tester, qhia nyob rau hauv daim duab 5. Nyob rau hauv no tester, cov ntsia hlau yog machined rau hauv ib tug disc thiab teem horizontally; rail disc tuaj yeem tig kab rov tav nyob rau hauv qhov kev txiav txim ntawm lub tshuab tsav los simulate qhov pub ceev ntawm lub tsheb sib tsoo. Cov cuab yeej tsim los ntawm Tuam Tshoj Academy ntawm Railway Sciences nta ib txoj kab uas hla ntawm kwv yees li 1.6 m, sib tsoo txoj siv dav ntawm 10 hli, thiab qhov sib tsoo siab tshaj plaws ntawm 10.8 km / h [9]. Raws li kev sib tsoo ntawm cov cuab yeej sim no, nws muab cov ntaub ntawv txhawb nqa rau kev txhim kho ntawm kev txiav txim siab rau kev sib tsoo lub log [9,13,14]. Cov khoom siv no yog qhov paub zoo nyob rau hauv kev ua haujlwm rail sib tsoo.

Fig.5Cyclical Rail Kab rov tav Rotation Feed Sib Tsoo Tester[19]

(5) High-Speed ​​Rail Sib Tsoo Tester. Wang Hengyu pab neeg ntawm Southwest Jiaotong University [15,16] tsim ib lub passive high-speed rail sib tsoo tester muaj peev xwm simulating kev sib tsoo siab tshaj plaws txog li 60 ~ 80 km / h, raws li qhia hauv daim duab 6. Tsis tas li ntawd, xibfwb Zou Wenjun pab neeg ntawm Henan University of Technology [17,18-Fi), qhov kev sib tsoo me me. rail log disc yog txheej txheem ntsug, thiab cov khoom siv tuaj yeem kho qhov sib tsoo pob zeb impulse thiab sib tsoo siab. Sab nraud txoj kab uas hla yog 150 hli, thiab cov specification ntawm cov pob zeb sib tsoo yog Φ80 × 10 × 10 hli, muaj peev xwm ntawm simulating on-site sib tsoo speeds ntawm 60 ~ 80 km / h thiab sib tsoo pressures ntawm 1200 ~ 3200 N. Kev sib tsoo siab ntawm cov pob zeb sib tsoo tuaj yeem hloov kho siab tshaj 8 km / h. ntawm 3200 N. Hom kev sim tshuab no ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov pob zeb sib tsoo ceev.

Fig.6High ceev sib tsoo lub rooj ntev zaum [13]

Fig.7Kev kub ceev sib tsoo txo ​​kev xeem lub rooj ntev zaum [16]

(6) Tiag Rail Sib Tsoo Test Kab. Ntau xyoo dhau los, Golden Eagle Hnyav Kev Lag Luam tau pib tsim thiab tsim tshiab ntawm kev sib tsoo tsheb sib tsoo tsheb thiab tsim kev sib tsoo tsheb ciav hlau hauv Yujiahu, Xiangyang City, Hubei Xeev. Daim duab 8 qhia txog lub tsheb loj sib tsoo tsheb, uas tuaj yeem nruab nrog 24 lub log sib tsoo (12 ntawm txhua sab), ua haujlwm ntawm kev sib tsoo ceev tshaj 60 km / h [15]. Lub tsheb cov kev ua haujlwm thiab cov qauv tuaj yeem ua tiav nrog cov kev sib tsoo ntawm kev sib tsoo high-speed rail, ua kom muaj kev pov thawj ntawm kev sib tsoo pob zeb kev ua haujlwm. Tib lub sijhawm, lub tsheb tau nruab nrog ntau lub pob zeb sib tsoo, tso cai rau kev txheeb xyuas qhov ruaj khov ntawm cov txheej txheem sib tsoo pob zeb. Yog li ntawd, nyob rau hauv cov xwm txheej ntawm kev tsim kom muaj kev ntsuam xyuas tag nrho, kev ntsuam xyuas yav tom ntej thiab kev txheeb xyuas ntawm kev sib tsoo log kev ua tau zoo los ntawm lub tsheb sib tsoo no tuav tus nqi coj tus nqi.

Fig.8Kuaj kab tiag tsheb sib tsoo [13]

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