XAC DINH THOI HAN LAM VIEC CUA B Q TRUC BANH XE D A U M A Y D20E VAN DUNG TAI XI NGHIEP DAU MAY DA NANG OBO: GS TS DO DUG TUAN Bo mon Ddu mdy - Toa xe n Khoa Ca Trudng Dgi hgc Giao thong Van tdi HVGH KS NGUYEN TRONG NGHIA Tdng Cong ly Du&ng sdt Viet Nam Tom Uit: Tren ca m cdc thdng sd vi cuong hao mdn mat lan vd lgi bdnh xe lien hdnh xdc dinh thai han Idm viic Gamma phdn trdm ciia bd true bdnh xe ddu mdy D20E van dung lai Xi nghiep ddu mdy Dd Ndng theo hao mdn mgi Idn bdnh xe vd lgi bdnh Cdc kit qua nhdn duoc Id ca w cho viic hiiu chinh chu ky' sua chCra hg phdn chay ddu mdy mot cdch hop ly phu hop vdi diiu kien khai thdc a Viet Nam ndi chung vd tgi Xi nghiep ddu mdy Dd Ndng ndi riing Summary: On the grounds of parameter of wear niteusit)' of rolling surface and rim oj the wheels, working time gamtnar percentage of the wheel, axle and box assembly of D20E locomotives used al Danang Locomotive Enterprise has been determined according to wear of rolling suijace and rim of the wheel The results are foundations jor the research of adjustment of curing cvcle of wheel, axle and box assembly on the above various locomotives matched with specific condition of Vietnam in general and of Danang Locomotive Enterprise in parlicular I D A T VAN D E Trong bai "Xac djnh cac dac trung hao mdn mat lan va Ipi banh xe dau may D20E van dung lai Xi nghiep dau ma>- Da Nang" [3] da trinh bay qua trinh xac djnh cudng dp hao mdn mill lan \ ii lgi himh xe dau ma\ D20E van dung tai Xi nghiep dau may Da Nang Ndi dung bin bao trinh bay qua trinh xac djnh thdi han lam viec (tudi thg) Gamma phan tram cua bd true banh xe theo hao mdn mat lan va lgi banh Cac kit qua nhan dugc la co' sd cho viec hieu chinh chu ky sira chua bd phan chay dau may mdt ciich hop ly, phii hgp vdi dieu kien khai thae d Viet Nam ndi chung va tai Xi nghiep d4u nuiy Da Nang ndi rieng r^p chi KHOA HQC GIAO THONG VAN TAI So 29 - 03/2010 37 H AC DINH THOI HAN L A M VIEC CUA BO TRUC B A N H XE T H E O H A O M O N IN r L A N VA LOT B A N H X E Phu'cng phap xac dinh tuoi tho G a m m a phan tram cua chi tiet Do tin cay hoac xac suat hong ciia cac dang bieu hien mdn khac d u g c the hien gl,[l]Bdng Cdc md hinh tinh loan vdi cdc dgng hiiu hiin mdn khac Bilu dd ciia cac bieu hien mdn Cac thdng sd ve dp tin cay E[I(L)] = E(Ir) + E(c).L D [ I ( L ) ] = D ( I r ) + D(c).LI -E(I )-E(c).L gh P(L) = p Chi KHOA HQC GIAO THONG VAN TAI So 29 - 03/2010 43 ... 39 2.2 Xac djnh thdi han lam >:ec ciia bo true banh xe dau may D20E van dung tai Xi nghiep dau mav Da Nang theo hao mon mat lanva loi banh xe 2.2.1 Xdc dinh thai iigii lain viec gamma phdn trdm... 5,075069 4,635173 ludi ihp G; imma ph [in tram cua bd true banh xe tinh theo hao mdn gidi ban ciia mat kan va lgi b;inh xe ddi \-di dau ma\ D20E van dung tai Xi nghiep dau may Da Nana dupe thi hien... ban mat lan banh xe dat sdm ho-n so hao mdn gidi ban cua lgi banh xe \i vay phai la\ hao mdn mat lan lam co- sd hay ndi khac thdi ban lam viec gamma phan tram ciia bd true banh xe phai dugc xac