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Thong tin khoa hpc cong nghe m o{ NGHIEN CUU THIET KE, CHE TAG CAC VAN DIEU KHIEN THUY LUC CHlNH CUA DAN CHONG N H A M THAY THE HANG NHAP KHAU
The successful manufacture of the hydraulic control valves has been considered as one of new steps in the program of domestic manufacture of the supporting equipment used at underground mines. This move will provide the coal mining units advantages in applying the technological progress to the manufacture of the produces suitable to the actual requirements from the production, contributing to the application of the mechanization and modemization to Vietnam underground coaf mining activities
ThS. DOAN NGOC C A N H KS. PHAM TRUNG HAI Vi$n Khoa hoc Cdng ngh$ Md - Vinacomin
Bien tap: TS. Ta Nggc Hai
LDatvdnde
Trong nhu-ng nam g i n ddy, Tgp doan Cong nghipp Than - Khodng sdn Viet Nam quan tam phat triln c h l tao thilt bj, phu tung nham thay t h l hdng nhap ngogi, dap i>ng kip tho'i nhu cau san xult va giam chi phi d i u tir, ndng cao hieu qua san xult cua dan vj su- dung cung nhu- nang cao ndng lyc chl tgo cho cac dan vj ca khi trong ngdnh. Nhilu loai thiet bj va cac san pham ca khi da du-p-c cdc dan vj trong nu-dc nghien cyu, thilt k l , chl tgo thdnh c6ng vd dya vdo dp dung trong thyc t l san xult, mang Igi hieu qua kinh t l - ky thugt lan cho ngdnh. Trong khai thac than him 16, ching giO 16 chp* Id khdu quan trpng cua qud trinh san xult. Vipc si> dung cdc thilt bj chong giu- phu hyp, co chit Iirp'ng khong nhu-ng bao dam nang suit cua ca ddy chuyen ma c6n cdi thipn dilu kien ldm vipc va nang cao mu-c dp an todn lao dpng.
Oli v6i cdc thilt bi chong giu-16 chg-, tir ddu nhu-ng nam 2000, Vipn Khoa hpc Cong nghp Mo da d l xult va du-ac giao thyc hipn nhilu de tdi, dy an thu- nghipm thiet k l , che tgo toan bp phan kit clu ca khi cua cdc thilt bj chong giu- him 16 nhu- gian chong Vinaalta, gid khung di dong GK1600/2400, gian chong t y hanh KDT1, KDT2. .Din nay, cdc thilt bj ndy dd du-gc su- dung tu-ang doi pho bien trong cac mo h i m 16, tuy nhien, he thong thuy lyc cua cac logi gian ching noi tren vdn phai nhgp khiu, khong nhu-ng gid thdnh cao, nhieu logi khong co s i n nguon hdng, ddn t6i dan vj su- dpng thu-o-ng bi dpng trong qua trinh san xult do phu thupc vdo nha cung d p khi thyc hipn bag du-ong, su-a chu-a, thay t h l linh kien, phu tung.
Ti> thyc t l do, nam 2011 - 2012, Vipn Khoa hpc Cong nghp Mo d l xult va du-ac Bg C6ng Thu-ang giao thyc hi$n d l tdi "Nghien cu-u thilt k l , c h l tgo cgt vd cpm xi lanh thuy lyc cua dan chong t y hanh su- dung trong cong nghp khai thdc hg t r i n thu h l i than noc tgi cdc mo than h i m 16". San phim cua de tai dd du-yc dya vao u-ng dpng hipu qua trong thyc t l san xult. Qua d6, Vipn da lam chu cong nghp c h l tgo cpt v^
cac logi xy lanh du-ang kinh 16-n d i n 220mm, du-g-c su- dpng chu y l u tren cac logi ddn ching thuy lyc.
TO nhu-ng thdnh cong cua d l tai nay, vd-i myc tieu chu dgng trong thilt k l , che tag toan bp dan ching, Vipn Khoa hpc Cong nghe Mo tilp tpc d l xult va du-p-c Tap doan Cong nghipp Than - Khoang san Vipt Nam (TKV) giao thyc hipn de tdi "Nghien cO-u, thilt k l , c h l tgo cdc cpm van dllu khiln thuy lyc chinh nham thay t h l hdng nhdp khiu
2. K i t qua nghien ci>u va cac san phim cua d l tai
Thyc hi^n ngi dung nghien cu-u cua de tdi, Vien Khoa hgc Cong nghe Mo phii hp-p cung Cong ty C l phin Cong nghiep Oto - Vinacomin nghien cu-u, c h l tgo thdnh cong cpm to hyp tay van dieu khien thuy lyc vd hai logi van dilu khiln thuy lyc chinh sO dyng pho bien tren cdc thilt bj ching gii> h i m 16. Cdc san phim cy t h l nhif sau:
2.1. Cum tay van dieu khiin thuy lyv Trong cac sa d l thuy lyc ciJa ddn ching ty hanh, cym tay van d i l u khiln idm nhipm vy dieu khiln hu-o-ng dong djch d p cho cac xy lanh thCiy lyc. TLP d6, thyc hipn dieu khiln cdc hogt dpng
KHCV\IS69/2015*CO D I E N . T V DONG HOA
Thong tin khoa hoc cong nghe m o
Hinh 1. Tay van diiu khiin dan
1. Than van: 2. Ld xo; 3. €>$m: 4. Cum con tnjot; 5. Ong ling 1, 6. 6ng ling 2;
7. Bac do: 8. Tyvan:9. Ong ldng 3:10 Cum diu tf: 11. Vdng chSn I&: 12. Cum tay gat: 13 Vit: 14,15,1 B.
Vdng d$m kin: 17. Daiic._
Hinh 2. Cdu tao cum van didu khiin thuy Ii/c1 chiiu"
1. Thdn van; 2,6,8,9. Vdng ddm kin: 3. Nip chdn; 4. Bi, 5. Contnjot: 7. Daiic; 10 Vdng ddm: 11. Ldxo cua ddn ching nhy: Nang hp ddn; di chuyin dam bao khd ndng ching do an todn cho hopt dan, dich chuyen mang cdo; diiu khien nang ha d6ng cua dan ching.
Chan gyong; diiu chinh xd canh; dong md cu'a 2.3. Van dieu Ithien thuy lire 2 chieu: (hinh thdo than... Tiiy thupc s i lypng xy lanh thuy lyc 3)
c i n d i i u khiin, co t h i ghep cdc tay diiu khiin jrong cac thiit bi ching giir trong ham 16, don thanh cgm tay van dieu khiin thuy lyc trdn ^an ndy thydng l i p dat de diiu khiin hoat ding tiinh 1 the hien tay dieu khien don. i^a ^^ ^ lant, ,huy iyc co ydu cau khoa ding 2.2. Van dieu Ithien thuy lyv 1 chieu (hinh thdi ding chit long c i p cho xy lanh hai chiiu.
2) Nhd vdy, giir nguyen trang thdi hoat dpng cua Van dypc lap trong so d i thuy lyc cua ddn co c l u dypc diiu khiin. Ch! khi co tdc dpng ciia chong t y hanh nham kiim sodt hoat dpng cua tin hieu diiu khiin tdi van mdi thay d i i dypc cdc xy lanh thuy lyc, vdi mgc dich khoa dong trang thai hopt ding co c l u dd.
c h i t Idng ra khoi xy lanh, hpn c h i mpt chiiu cdc van thiiy lyc tren do Idm vipc vdi dp suit chuyen dpng cua xy lanh (thydng la chiiu chiu cap (32Mpa), trpng diiu kipn moi tm'dng bgi bin, tdi), giO" ap suit trong xy lanh khing d i i , do vay, nydc axit vd nhifng va ddp bit chpt nen d i i hoi
KHCNM s d 9/2015 • CNKT DIJN- TV'BONG HOA
Thong tin khoa hoc cong nghe m o
Hinh 3 Ciu tao cum van diiu khiin thOy luc 2 chiiu
1. Thdn van 2 Bai ic chdn, 3 Ld xo; 4. Con tnrat nhi: 5 Ld xo an todn; 6. Bac d&; 7. Ld xo; 8. Con tnjvt Idn; 9. Bai ic bit kin; 10. Bdm cao su mdt cit chO- nhdt: 11, 12, 13, 14, 15, 18, 26. Vdng dim kin; 17 Lira loc; 18. Bich din Id xo; 19. Bdm djnh dp; 20. Bai ic bit, 21. Bac da Id xo; 22. Thdn cum an todn; 23.
Baiic, 24. Bac nii, 25. Ty diiu dp d i bin, d i i n dinh Idm vipc cac. De ddp irng yeu 3. Kit luan
c l u d6, sau khi hodn thanh c h i tac (thang Vi$c c h i tao thanh c i n g cdc cgm van diiu 5/2015), cdc van thuy lyc d i u dypc kiim tra thii' khiin thiiy lyc Id mit bydc t i i n thanh cong mdi nghipm va kiim tra chit lypng theo TCVN, 4944 trong chyong trinh nOi dia hda san xult thiit bi - 89, TCVN 4945 - 89 tidu chuin ngdnh v i kiim ching giii' gyong 16 chp trong mo h i m 16. Nhy dinh thiit bi thiiy lyc. Tpi xydng c h i tpo, qua vay, cho den nay toan bo phan chinh ve co khi, kiim tra,cdc van thuy lyc ndy d i u ddp irng^cdc thuy lyc cua dan ching hoan toan co the thiit thing s i ky thuat theo yeu cau thiit ke. De c6 k i , c h i tao trong nydc, g i p phin trong viec phat t h l ddnh gia chat lypng cua sdn phim trong triin dp dyng co gidi hda, trong khai thac him thyc t i san xgit, cac van c h i tao dang dypc lap
ddt Idm viec tren ddn ching sidu nhe ZZ1800/16/24 tpi 16 chp V12-4 mirc -200-'-150, Cing ty than Khe Chdm. Qua cdc k i t gua theo doi ban d i g (tir thdng 8/2015 d i n thdng 9/2015), cac van thuy lyc lam vipc on dmh. dam bao chirc ndng hoat dpng theo yeu c l u thiit k i
Id ciia Vipt Nam./.
Tai li$u tham lihao:
1. Bao cdo t i n g k i t de tdi, 2013. 'Nghien ciru thiit ki, che t$o cot va cum xy lanh thuy iuc cda dan chong ti/ hinh s y dung trong cdng nghi khai thac //a tran thu hoi than noc t^i cic mo him Id" Vipn khoa hpc Cing nghp Md - Vinacomin.
Di tdi "Nghidn cCnj thiit ki, chi tao cdc cum van diiu khiin thuy luc chinh nhim thay thi hdng nh$p khiu". do Viin Khoa hoc Cdng nghi Md di xuit vd duac T$p dodn Cing nghidp Than- Khodng sdn Vi$t Nam giao chO tri thuc hiin. Bi tdi thudc chuong trinh KC.03.BB07-12/08.10, thdi gian thuc hidn 24 thdng (tCr 12/2012 din 12/2014).
Chi nhidm di tdi: ThS Bodn Ngoc Cdnh Muc tidu cia di tdr
- Ldm chi thiit ki, cdng nghd chi tao cdc sdn phdm cda di tdi,
- Chi tao 03 loai cum van diiu khiin thiy luc chinh cda ddn ching (y hdnh, tiin tdi sdn xuit, thay thi din hdng nhip khiu.
Nil dung nghidn cuu khoa hoc vd tnin khal thuc hiin:
1) Nghidn cCru, ddnh gid ting quan vi hidn trang si> dung hd thing thiy luc trong thiit bi ching giO khai thdc than him li Nhu ciu thi tnidng, khi ndng diiu khiin cung mg sin phim thuy Ivc cho thiit bi khal thdc him li tai Vidt Nam; 2) Nghidn cCnj xdy di/ng ydu du kf thudt Chung cdc loai van diiu khiin thuy iuc thing dung si> dung trong ddn ching; 3) Nghidn cdu ldp bi bdn vd thiit ki chi tao cdc cum van diiu khiin thuy luc ci tinh ndng diiu khiin tucmg tu cdc sdn phim nhdp khiu dang sir dung; 4) Nghidn cCm lip quy trinh cing nghi gia cing, chi tao cdc cum van diiu khiin thiy luc; 5) Ti chuc gia cing chi tao sdn phim;
6) Nghidn cihi xdy di/ng sa di diiu khiin thiy luc cho mit ioai ddnching di phi hap vdi cdc cum van duac chi tao; 7) Ap dung thCr nghidm sdn phim vdo thuc ti sdn xuit, ddnh gid kit qui.
KHCNM S 6 9/2015 *CO DItN - TV DONG HOA
