1. Yuav ua li cas ua cov hlua hlau sib txuas nrog cov hlua los daus siv thaum lub caij ntuj no txij nkawm?
SnowPlows Tshem Cov Ntsoov ntshiab tab sis tuaj yeem ua kev puas tsuaj rau lawv yog tias muaj cai, yog li:
Kev Tua Tsim: Tuaj tau ua los ntawm cov hlau mos (qis dua nyuaj dua cov nqaj hlau) rau kos cov ciav hlau tsawg tsawg.
Kho qhov siab: Thooj li yog teeb tsa 1-2mm saum taub hau sib tw kom tsis txhob muaj kev sib cuag ncaj qha.
Qeeb ceev: Plrows ua haujlwm ntawm<10 km/h to reduce impact force.
Tom qab-taws kev kuaj xyuas: Txheeb xyuas rau cov nicks lossis dents, uas yog av du yog<0.5mm deep.
2. Dab tsi yog qhov sib txawv ntawm kev tsheb ciav hlau hlau thiab lub log hlau hauv cov ntsiab lus ntawm cov khoom siv?
Rail stair hlau thiab log hlau yog engineered los ua ke:
Rail Hlau: Harder (300-400 HB) kom tawm tsam kev hnav, nrog ntau dua cov pa roj carbon (0.6-0.8%) rau lub zog.
Log Hlau: Kev nyuaj (250-300 HB) kom nqus cov kev cuam tshuam, nrog qis carbon monoxide (0.4-0.6%) thiab ntau ntxiv.5%) rau kev sib tw.
Qhov kev tshuav no tiv thaiv ob qho tib si los ntawm kev hnav ib tus nqi sib npaug ntawm cov log coj ceev ceev tab sis yog qhov pheej yig dua los hloov dua.
3. Yuav ua li cas ua cov hlua hlau hauv cov thawv rau hauv cov thawv rau cov tub rog tom qab los ntawm cov neeg nqa khoom hauv cov tsiaj?
Cov Nqa Tsis Txaus (Siv txav cov thawv) exert muaj zog rau tom qab yuam (thawb cov hlua khi (thawb cov hlua khi). TERMINGY RAIL:
Bases Dav Hlau: 150-200mm dav (vs . 110}}
Qhob Ecasement: Cov ntsia hlau tau teev rau hauv cov pob zeb ua rau thauj tog rau nkoj lawv, tiv thaiv kev txav mus los.
Hnyav-Duty Fasteners: Ob chav clips rau ib tus neeg tsaug zog rau kev tawm tsam siab.
Nquag tshuaj xyuas: Txheeb xyuas kev ua haujlwm tsheb ciav hlau txhua hli (vs. rau lwm kab) vim muaj kev ntxhov siab ntau.
4. Dab tsi yog qhov cuam tshuam ntawm kev kub ntawm lub log-tsheb sib txhuam?
Kev tsuj kub cuam tshuam rau kev sib txhuam los ntawm kev hloov pauv saum npoo tawv:
Cov ntsia hlau txias (<10°C): Harder cov chaw nce kev sib txhuam (coefficient ~ 0.45), txhim kho traction tab sis nrawm dua kev hnav.
Hot rails (>30 Qib): Qhov chaw so me me txo cov kev sib txhuam (coefficient ~ 0.35), kev hnav ris tsho me tab sis nce hauv qab kev pheej hmoo.
RAILways kho cov kev txwv ceev hauv huab cua sov: qeeb qeeb nrawm hauv huab cua txias kom txo tau cov kev hnav; Nce sanding hauv huab cua kub kom tiv thaiv npleem.
5. Yuav ua li cas cov hlua hlau hauv keeb kwm Tramways (19th caug xyoo) sib txawv los ntawm cov niaj hnub no?
| Yam zoo | Xyoo pua 19th Tram | Niaj hnub nimno Tram Ntshiv |
|---|---|---|
| Khoom | Tsawg-carbon hlau (softer, nquag hnav) | High-carbon lossis alloy hlau (nyuaj, ruaj) |
| Lub cev | Tiaj-hauv qab nrog cov hau yooj yim | Lub taub hau profiled (txuam kev log tsim niaj hnub) |
| Pob qij txha | Bolted Fishplates (muaj ntau qhov khoob) | Welded (tsis muaj qhov khoob) |
| Kev muab cia | Laid ncaj qha rau pob zeb lossis ntoo | Mounted rau cov roj hmab ncoo rau cov suab nrov txo |
Cov ciav hlau niaj hnub kawg30+ xyoo; Cov kev sib txuas xyoo 19-caug xyoo yuav tsum hloov txhua 5-10 xyoo.