Thong tin khoa hpc cong nghe mo THIET KE CHE TAO BANG TAI ONG VAN CHUYEN THAN VA NGUYEN LIEU For the sustainable and effective development of the coal KS DOAN NGOC CANH sector, in recent years, VINACOMIN has paid much TS PHAN XUAN BINH attention to the mining, processing, screening and KS TA DINH HUNG transporting technology innovation Among them, the coal K S N G U Y I N VAN DCTC transporting link has been upgraded for meeting V7en Khoa hpc Cdng nghe Md TKV increasing demands in coal mining and consumption, ensuring ecological environment The paper introduces some initial results from the design and manufacture of pipe conveyors for carrying coal and bulk materials through residential areas Bang tai da 6uac sCf dung rpng rai cac nganh cdng nghiep tCf nhCfng nam dau eCia the ky 20, de van chuyen cae loai hang hoa, vat lieu nhd cd nhCimg uu diem ndi bat nhu: ket cau ddn gian, kha nang van chuyen linh hoat, tuyen van chuyen keo dai, ed kha nang vupt qua nhieu dja hinh phifc tap chi phf dau t u tha'p, chi phf van hanh re, nang suat van chuyen cao va tieu hao ft nang lupng Hieu qua van chuyen ciia bang tai rat Idn, nhien, qua trinh sif dung bang tai Idng mang thdng thudng de van chuyen hang hoa rdi cho cac nganh cdng nghiep nhu xi mang, than, da, eac loai khoang san da sinh mdt sd khd khan, tdn tai: - Kha nang gay bui ban, d nhilm mdi trudng cao su rdi vai, tdn that vat lieu qua trinh van chuyen - Vdi dja hinh phCfe tap yeu cau tuyen bang udn li/dn se phai chia tuyen nhieu doan va them cac tram trung chuyen lam tang chi phi dau tu Trong nhieu trudng hpp se khdng the thi/c hien khdng dap ifng dupe cae yeu cau ve dia diem, mdi trudng, vj trf lap dat - Vdi cae tuyen bang dac thu van chuyen nganh khai tliac than, khoang san cd dp dd'c tuyen Idn, vat lieu van ctiuyen can bao ve tranh tac ddng ciia mdi trUdng, tdn tha't bang tai thudng khd dap Lfng 6\jgc Vdi viec Lfng dung cdng nghe van chuyen bang bang tai dng, eac tdn tai tren se 6ugc khac phuc hoan toan Day cung chi'nh la md hinh van tai 6\jgc ifu tien van chuyen vat lieu rdi qua cae khu dd thj hien Thue hien chien lupc phat then ben vCfng, hieu qua eiia nganh than, nhC/ng nam gan day viec tang eudng dau tu ddi mdi cdng nghe khai thac, che bien van tai than 6ugc Tap doan Cdng nghiep Than - khoang san Viet Nam dac biet quan tam Trong dd Lfu tien viec bang tai hoa eac qua trinh van chuyen de dap umg yeu cau nang cao nang suat khai thac va tieu thu than, bao ve mdi trudng sinh thai, tCfng bude thay the hinh thCre van chuyen bang d td ed hieu KHCNM S 1+2/2010* CO DlfeN - TITDONG HOA MO sua't tha'p, gay d nhiem mdi trudng, dac biet la vdi nhCJmg tuyen van tai qua cac phd, thj tra'n tap trung ddng dan eU Vdi nhieu ti'nh nang vUpt trdi so vdi cae loai hinh van tai khac, bang tai dng dang la mdt nhifng uu tien lUa chpn de van chuyen tieu thu than di qua cac khu vUc dan eU, dd thi: - Cung dp van chuyen dai cd the tdi hang chuc km, han che tdi da sCf dung nhieu tuyen va cac tram trung chuyen, ed kha nang chi dung mpt bang tren toan tuyen - Dp dn tha'p dp tiep xuc td't giOra bang tai va dan lan dd - Giam thieu mifc dp phat tan bui tCf nguyen vat lieu van chuyen ben ngoai, ddng thdi bao ve vat lieu tranh khdi cac tac ddng mdi trUdng tCf ben ngoai nhd sif ddng kfn hoan toan cOa bang tai tren toan tuyen - Chuyen tai dieu kien gdc dd'c Idn (cd the tdi 50°), udn lifpn linh hoat theo ca chieu cong difng va cong Thong tin khoa hpc cong nghe m o ngang, vay ed kha nang vupt qua nhieu khu vife dja hinh phLfe tap, giup tdi ifu hoa viec lifa chpn phUdng an van chuyen Tram xi lidu - Nang sua't van chuyen Idn, tdc dp van chuyen cao, dap Lfng mpi yeu cau ve san lupng, nang sua't van chuyen Theo thdng ke tfnh toan nhieu cdng trinh bang tai, mac du ehi phf dau tu he thdng bang tai dng cao hdn bang tai thudng khoang 12% - 13% nhung ehi phf van hanh lai re hdn 7% (tfnh theo T/km van chuyen) cae chi phf lien quan qua trinh sCf dung ddn gian va re hdn Do vay, xet tdng quan hieu qua dau tif, bang tai dng cang 6\jgc nhieu nha" dau tu lua chpn, dac biet tai cae khu vifc thj tran, phd ddng dan cif Ket ca'u chung eiia bang tai dng cd ban gidng nhif bang tai thudng Tai khu vuc dau, dudi tuyen bang thudng lap dat cae tram dan ddng Cae thiet bj lien quan khac eiia he thdng cung bao gdm tram cang bang, kieu eon lan, bp ca'p dd lieu, lam sach bang, may tach tCf Viec SLf dung nhanh quay ve de chuyen tai cung thifc hien 6ugc vdi bang tai dng De lam viec can lap them bd eon lan dao bang nhanh dudi, xoay bang 180° de giCf cho mep bang ludn d phfa tren khep dng va mat chCfa vat lieu khdng thay ddi chuyen tCf nhanh tren xudng nhanh dudi (sd 66 nguyen ly-hinh 1) Su khac biet chCi yeu d day chi la bd tri bd eon lan chuyen dang (hinh 2) va dmh hinh bang (hinh 3) de chuyen dang bang tCf Idng mang sang dang dng va Conian chuyin huflng Hinh Md hinh nguyen ly hoat dpng eiia bdng tai dng Hinh Bp gid ddeon ldn dieu chinh gde Hinh Gid ddeon Idn hinh dng Hinh Bp Idn djnh hinh dan hudng bdng tai dng KHCNM s o 1+2/2010* CO DifiN - TU DONG HOA M Thong tin khoa hpc cong nghe mOi ngUdc lai bang di vao va khdi bp khung dd dng cd lap cac lan dd, din hudng theo hinh luc lang (hinh 4) Nguyen ly hoat dpng ciia bang tai dng nhif sau: bd dan dpng gdm dpng cd, hop giam tdc truyen chuyen ddng tdi tang dan dpng, nhd life ma sat day bang dupc keo chuyen dpng lan tren cac lan dd bang Do sU djnh dang ciia cac lan dan hudng, bang dupc udn dan tif dang Idng mang sang hinh trdn va difdc djnh hinh ddng kfn tren toan tuyen van chuyen nhd cac bd lan dd bang xep theo hinh luc lang Tdi gan vj trf xa lieu bang lai 6ugc md dan nhd cac bp gia dd lan chuyen dang theo tien trinh ngupe vdi qua trinh ddng bang dang dng Nhd ket cau dm ciia bd lan hinh luc lang bao vdng quanh day bang nen bang tai dng rat linh dpng, cd kha nang udn lupn vdi gdc ddc Idn vupt qua dja hinh phife tap Kha nang udn lupn ed the thi/c hien ddng thdi theo ea phuong dijfng va ngang, giup tdi uu hoa ve dp dai tuyen van tai va giam tdi da cac tram dd trung chuyen so vdi si!lr dung Hinh Kha ndng hoat ddng linh hoat ciia bdng tai dng bang tai thudng (hinh 5) Trong qua trinh van Viec xac djnh ban kfnh chuyen, day bang tai dng cong de lap tuyen rat quan cudn trdn kfn, gdc dm Idn nen kha nang chat day cCia bang trpng qua trinh thiet ke tai dng rat cao ML/C dien day Cd nhieu yeu td anh hudng vat lieu dng bang cd the tdi tfnh toan nhu: tdi 70% dien tfch Day la ti le + Dac tfnh loai day bang sii mCre lieu van chuyen phu hdp dung nha't vdi kha nang tu djnh tam + Luc keo tac dpng len cua dng bang Viec nap lieu doan dng udn cong cho bang tai dng anh hudng + Cach bd tri lan dd khdng nhd tdi hoat ddng cua + Khoang each gia dd lan bang tai Vdi bang tai thudng, viec ca'p lieu qua cdng suat + Dudng kfnh dng bang hoat ddng cua bang ehl gay + Gde ddc bang tai tran vat lieu ngoai bang, Trong tfnh toan thiet ke cd nhifng ddi vdi bang tai dng the tham khao lifa chpn theo viec cap lieu vupt qua 100% bang thi/e nghiem (bang 1) Bang Sdlldu tuong quan giOa bdn kinh udn nhd nhdt vdi gdc ddc vd dd ddi doan chuydn tiep cua bdng tai Kieu day bing Nylon Polyester/ Nylon Kevia Steel cord Dudng kinh dng (mm) 150-300 350-500 150-300 350-500 150-300 350-500 150-250 250-350 350-500 KHCNM sO 1+2/2010* CO Bdn kinli udn (mm) OO" 30° • 45° 300 XD 400 XD 400 XD 400 X D 400 X D 500 X D 500 X D 500 X D 500 X D 600 X D 600 XD 700 X D 600 XD 700 X D 700 XD 800 X D 800 XD 1000 X D DI6N - TUDONG H A M 45° - 90° 600 X D 700 X D 700 X D 800 X D 800 XD 900 X D 800 X D 1000 XD 1200 X D Do dai chuyen tiep (mm) 25 XD 30 XD 30 XD 35 XD 35 XD 40 XD 40 XD 45 XD 50 XD Thong tin khoa hpc cong nghe m o kha nang dien day ciia dng se dan de'n rach hoac hu hai bang Chfnh vi vay, viec cap lieu deu dan va lap dat he thdng kiem tra giam sat mifc lieu cap cho bang tai dng ed vai trd rat quan trpng Trong eac he thdng bang tai dng hien nay, cam bien mifc thudng 6ugc lap tai vj tri nhan lieu hoac dung cam bien ap sua't cho eon lan dd dng tai dau vao dng eiia bang tai de kiem soat mifc lieu Ngoai tfnh toan thiet ke cung can chu y tdi kfch cd vat lieu van chuyen MCfc gidi han kfch ed san pham van chuyen Idn nha't bang tai dng la'y theo yeu cau gidi han chung ciia cae hinh thCfe van tai loai ddng md la d,nax < 1/3D (trong dd, dmax^ Kfch thudc Idn nha't eiia san pham van chuyen; D: Dudng kfnh dng bang) Thdng sd ky thuat mdt sd loai bang tai dng da dupc lap dat tai Nhat Ban 6ugc gidi thieu bang Nam bat nhCfng ifu diem ndi bat eiia bang tai dng va theo sat cac ehCi trUdng chien lupc cCia Tap doan ve day manh ap dung khoa hpc cdng nghe mdi vao san xua't, tang eUdng ndi dja hda cac san pham ed khf phuc vu cho nganh than, khoang san, Vien Khoa hpc Cdng nghe Md TKV da phdi hpp vdi hang FLSmidth Koch chuyen thie't ke va cung cap thie't bi van tai hang dau the gidi, cfiii tri tU van thiet ke cho dif an dau tu tuyen bang tai dng van Bang Thdng sdkha ndng van chuydn mpt sdloai bdng tai dng eiia Nhdt Ban Dudng kinh dng (mm) 150 200 250 300 350 400 500 600 700 850 Toe bang tai (m/s) 2.6 2.8 3.0 3.25 3.25 3.75 3.75 4.6 4.6 5.0 Cong suat van chuyen (T/h) Kich cd hat vat lieu (mm) 130 255 540 630 850 1600 2300 3900 5100 8000 30-50 50-70 70-90 90-100 100-120 120-150 150-200 200 - 250 250 - 300 300 - 400 Bang Thdng sdky thudt coban cua tuydn bdngtai dng TT 10 11 12 13 14 15 Ten goi Dudng kfnh dng Chieu dai bang tai Chieu rpng day bang Trpng lUdng day bang Tdc dp bang Nang suat van chuyen Do chenh cao tram dau cudi Dp nghieng max, +/Ty le chat day tai Cong suat dpng co tinh toan Cong suat dpng co lap dat Khoang each cpt dd khung tieu chuin Chieu cao cpt dd khung tieu chuan Ban kfnh udn cong nho nhat Khoang each giura cac tam panel chuyen than dau tien tai Viet Nam, tCf Xudng sang 56 den cang Ben Can - Cdng ty TNHH Mdt TV than Mao Khe Thdng sd ky thuat cd ban ciia tuye'n bang tai dng dUdc trinh bay tai bang Tren ed sd tham dd khao sat, xay difng tuyen, kha nang che tao cua nganh cd khf da di den thdng nhat, phfa Koch cung cap eac thiet bj lien quan de'n dan dpng nhif dpng cd, giam tdc, day bang, lan cdn lai phfa Viet Nam thiet kd, KHCNM s o 1+2/2010* CO DifiN - T U D O N G HOA MO Don vj Gia trj mm m mm 350 3452 1400 39,2 600 11 0,5° 60 641 750