Nyob rau hauv qhov xav tau ib puag ncig ntawm underground thee mining, lubLongwall Shearersawv ua qhov tseem ceeb tshaj plaws ntawm cov tshuab. Tsim los rho cov thee los ntawm cov thee seam nyob rau hauv ib tug tas mus li thiab heev automated txheej txheem, nws efficiency ncaj qha dictates lub productivity ntawm tag nrho cov mine.
1. Kev sib xyaw ua ke
Niaj hnub nimno longwall shearer yog kev sib koom ua ke ntawm cov tshuab, hydraulic, thiab hluav taws xob. Nws cov khoom tseem ceeb muaj xws li:
Ranging Arms:Cov no yog cov "caj npab" ntawm lub tshuab uas tuaj yeem tsa lossis txo qis hydraulically los kho cov thickness ntawm cov coal seam.
Txiav Drums:Mounted ntawm qhov kawg ntawm cov caj npab, cov rotating nruas yog nruab nrog tungsten carbide -tipped txiav picks. Lawv yog lub luag hauj lwm rau lub cev fragmentation ntawm cov thee.
Chav nyob:Qhov system no txav cov shearer raws li armored face conveyor (AFC). Cov chav nyob niaj hnub no feem ntau siv "rack-thiab-pinion" system (feem ntau hu ua tus pin-track) rau kev txav mus los.
Electric Tsav & Gearboxes:High-voltage motors muab lub zog loj uas xav tau rau kev txiav, xa mus los ntawm hnyav- lub luag haujlwm planetary gearboxes.
Cowls:Adjustable flaps tom qab lub nruas uas pab coj cov kev txiav cov thee mus rau lub conveyor.
Tswj System:Lub "lub hlwb" ntawm lub tshuab, feem ntau featuring sensors rau qab ntug tswj (kom lub tshuab nyob rau hauv lub seam) thiab tej thaj chaw deb diagnostic peev xwm.
2. Txoj Cai Ua Haujlwm
Lub longwall shearer ua haujlwm ntawm lub voj voog rov ua dua lub npe hu ua"txiav web."Raws li lub tshuab txav raws lub ntsej muag thee, lub nruas rotating txiav rau hauv seam. Cov thee poob rau ntawmArmored ntsej muag Conveyor (AFC)nyob ncaj qha hauv qab lub tshuab. Thaum tus shearer mus txog qhov kawg ntawm lub ntsej muag (lub "lub rooj vag"), nws ua ib tug "nas" los yog "sump-in" maneuver kom txiav tob rau hauv seem tom ntej ntawm lub seam.
Tom qab tus kws kho mob,Hydraulic Roof Supports (Shields)tuav lub roob. Raws li cov shearer thiab conveyor txav mus rau pem hauv ntej, cov ntaub thaiv npog ua ntej, tso cai rau lub ru tsev tom qab lawv tawg mus rau hauv ib cheeb tsam hu ua"gof."
3. Cov ntsiab lus tseem ceeb ntawm kev tu txhua hnub
Muab cov xwm txheej hnyav - plua plav, noo noo, thiab kev co siab heev- kev tiv thaiv kev saib xyuas yog qhov tseem ceeb kom tsis txhob muaj nqi poob qis.
Xaiv Kev Tshawb Fawb:Kev txheeb xyuas txhua hnub ntawm cov txiav txiav ntawm lub nruas. Hnav los yog tsis tuaj yeem xaiv ua rau muaj kev vibration thiab tuaj yeem ua rau cov caj npab puas.
Lubrication Management:Xyuas kom cov roj qib hauv cov gearboxes thiab haulage units yog qhov zoo tshaj plaws thiab kuaj xyuas cov hlau shavings, uas qhia txog kev hnav sab hauv.
Hydraulic System Integrity:Tshawb xyuas cov dej xau hauv lub tog raj kheej kheej kheej thiab kom ntseeg tau tias cov khoom siv lim dej huv huv kom tsis txhob muaj cov kua dej sib kis.
Dej Txias Systems:Xyuas kom tseeb tias cov plua plav tshuaj tua kab mob ua haujlwm. Blocked nozzles ua rau muaj kev phom sij ntawm cov plua plav ua pa thiab ua rau muaj kev pheej hmoo ntawm cov pa taws.
Chain thiab Rack Tension:Tshawb xyuas cov tsheb thauj mus los rau cov khib nyiab lossis cov bolts xoob kom ntseeg tau tias taug kev mus raws lub ntsej muag.
4. Ua Lub Hom Phiaj Thoob Ntiaj Teb
Lub ntiaj teb no kev lag luam rau longwall shearers yog dominated los ntawm ob peb yam tseem ceeb players paub rau lawv engineering zoo tshaj plaws thiab automation technology:
Komatsu (yav tas los Joy Global):Renowned rau "Joy" series, lawv yog cov thawj coj hauv siab - seam mining thiab advanced automation (Smart Advance).
Kab ntsig (CAT):Lawv muab ntau yam ntawm cov shearers paub txog lawv txoj kev tsim thiab kev koom ua ke nrog CAT's Mine Star technology.
Eickhoff:Ib tus kws tshaj lij German tau hwm heev rau lawv cov precision engineering thiab iav tshuab. Lawv feem ntau yog qhov kev xaiv zoo tshaj plaws rau cov xwm txheej geological nyuaj heev.
Shaanxi Heli Mechanical Engineering Co., Ltd
* shearer spare xeem chaw tsim tshuaj paus *
lub vev xaib: www.heli-mining.com
email: yun.liu@helimechanical.com
