Các phần tử cơ bản trong tự động hoá băng tải mỏ

CAC PHAN TO Cd BAN

TRONG TU DONG HOA

BANG T^l Md

TS. KH<5NG CAO PHONG.

yBd mdn Ti/ddng hda xl nghidp Md vd Ddu khf

Trudng DH Md - Dia Chdt

Email: [email protected]. vn

Tom tit

Bang tai da dUOc suf dung td rat lau trong cong nghi^r

cung nhu trong cong nghiop IVlo of Viet Nam. Tuy nhii

cho den nay cac bang tai 6 Viet Nam da so van siJrdung car

thiet bi cu lac hau hoac thieu dong bo. Oe gop phan di/a r;

goe nhin tong quat ve cac thiet bi tU dong hoa bang tdi

cac phan tiif tU dong hoa co ban duoc trinh bay trong ba

bao nay.

Abstract

Conveyor bells were applied for long time in industry ani

also in mining industry in Vietnam. However, almost of

the conveyor belts in Vietnam use the old technology i

order to give an ovevievv of the automatic equipmer￾this paper presents main components applied in

automization for conveyor belt.

I.MdoAu

Bing tii di 6ugc sd dyng td liu trong cdng nghidp ndi

chung va cdng nghidp md ndi ridng 64 van ti i cic nguydn

vat lieu, cau kidn nhe hay thinh pham cua qui trinh cdng

nghd. Cung vdi sU phat triln cua khoa hpc ky thuat, bing

ti i trdn th i gidi cung dan dan dupe trang bj cic hd thdng

tu ddng hidn dai. Tuy nhidn d cic md va cic nhi miy tuyin

d Viet Nam van sd dyng cic he thdng dilu khiln tu ddng

cd, lac hiu (1) (2) hoac 6ugc trang bj thilu ddng bd. Cung

da cd nhdng 64 tai tdt nghidp cua sinh vidn nghidn cdu

thuc hidn vide tU ddng hda cho cic tuyin bing, nhUng

cung chua ehl rd dUpc ydu cau v i dng dung cua cic phan

td tu ddng hidn dai vio he thdng bing tii.

Ol gdp phan dUa ra cii nhin khii quit v l hd thdng thilt

bj tu dpng hda cho bang ti i Md, chdc ning v i dng dyng,

bii bio nay sd gidi thidu v l ydu ciu cdng nghd vi cic phin

tdcp bin d l thuc hidn tUddng hda cho cic h§ thdng bing

ti i Md.

II. Yiu cAu CONG NGHC COA VAN TAI BANG

BANG TAI

1. Yeu cau he thong

Bing ti i dUpc lip dat 64 vin chuyin cic nguydn vit

lieu trong cic nginh cdng nghidp. Trong nginh Md d Vidt

Nam, bang ti i dUpc sd dyng 64 van tii than di d cic md

than hay cic nha may sing tuyln.

TUddng hda cho tuyln bang chu ylu van l i vide bio vd

he thdng bang trong cic trudng hpp cy thi, giim thilu v i

loai bd cac nguy hilm cho he thdng. Nguydn tSc cCia cic

phan td bio vd nay la phit hidn cic sU cd v i loai bd khi

nang sU co xiy ra nghiem trpng hon (3).

Ydu cau tu dpng hda cho mdi he thong bang ti i phu

thupc vao chilu dii cua bang. Vf du vdi he thdng bang ti i

trdn 1000 mdt v i cd dilm chuyin ti i thi ydu cau tU ddng

hda theo tidu chuan cua Anglo American (4) li:

• Hd thdng dilu khiln quin ly bang ti i thdng minh

• Cdng tic kdo an toin bd trf trdn moi khoing cich an

toin (6 ci hai bdn cua bang ti i - phu thudc vio he thdng)

• Tat ci cic cdng tic kdo cin dUpc dinh sd rd rang.

• Cic khda kdo cd thi ed cdi bio va den hidu.

• Mdc treo cho diy kdo dupc bd tri each diu nhau trdn

toin he thdng

• 2 cim biln lech bing (dat d diu v i dudi bang)

• Cic cim biln ldch bang cd thi dupc bo tri thdm d cac

doan cong cua bang (trudc v i sau dilm cong) nlu can

thilt.

• 2 cim biln rich bing (diu v i dudi bing)

• 1 cim biln dao ddng

• Giim chin chdng dao ddng (diu v i dudi bing) cung

cip cho bing ti i tuy theo ydu ciu cua nhi thilt kl.

• 2 cim biln tdc dd (diu v i dudi bing) (hiln thj tic dp

nlu cin)

• 2 cdi hidu v i ddn hidu khdi ddng (dau va dudi bang)

(tdi thilu IGSdB)

• Cim biln chong un cSp lieu (kilu cdng tic, kilu song

sidu im (microwave), kilu radar hay kilu phdng xa (cin

giiy phdp sd dyng))

• 4 cdng tic un than

• 4 cdng tic gidi han hinh trinh

• 1 cdng tic nghidng bang

• Tu dilu khiln khdi ddng ddng cho cic ddng cP truydn

ddng

• Lidn ddng khdi ddng dCmg cho hd thong ghdp ndi

nhilu bang

• 1 PLC dilu khiln hoac thilt bj dilu khiln bang t

42 Ttf ddng hoa ngay nay / 4, 2012