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Cong trinh khoa hpc NGHIEN CUU CAC THONG S O Q N G L\}C HQC CUA HE THONG TRUYEN D Q N G THUY LV'C DAN D Q N G T R ^ C L?CH TAM CO CAU GAY RUNG TR^N CAC MAY HI$U CHINH VACHfeNRAY TS NGUYfcNOiNHTU B() mdn Mfiy x3y dirng - Xip dff KItoaCffkIti Tru&itg Dgi hgc Giao liidng V^n tdi Tom (lie Hien nay, h? (hdng truyin dgng thuy luc (TDTL) dugc irng dung rgng rai Iren cdc mdy hi^u chinh vd chdn ray, diing de ddn dgng cdc ca cau kep ray, ndng hg vd hieu chinh my, chen dd ba ldi, H4 thdng TDTL ddn dgng (rvc I4ch (dm ca cdu gdy rung cd dnh hu&ng l&n tdi chdt lugng vd hi?u qud chin l&p dd ba ldi du&i chdn id vi-l ndi rieng vd ehdl lugng hogi dgng ciia mdy hi4u chinh vd chen ray ndi chung Bdi bdo Irinh hdy (dm tdl kel qud nghiin cuu vi \dv dung mo hinh hdi (odn, (Inh lodn cdc (hdng sd ca bdn ctia h4 (hdng TDTL, dp dimg kit qud nghien cuu de tinh lodn dp sudt ehdl long eong tdc vd ldc dg quay cita dgng co ihiiy lyc ddn dgng tryc I4ch ldm co edu gdy rung tren cdc mdy hl^u chinh vd chen ray loai VPR-02 (LB Nga) Summary: Currently, hydraulic transmission system is widely used on the rail correcdon and lamping machines, used to drive (he rail clamping mechanism, rail lifting and lining, tamping ballast, hydraulic system driven eccentric shaft vibration mechanism lias much influence on Ihe quality and efficiency of lamping ballast process of (he layer lies in pardcular and operadonal quality of the rail lifting, lining and lamping machines in general This article presents brief the reseach results on findings math modeling, calculating the basic parameiers of (he hydraulic transmission system and then applying lo calculate (he fluid pressure and ro(a(ion speed of hydraulic mo(or drive eccen(ric shaft vibration mechanism on the rail lifting, lining and (amping machines VPR-02 (Russian) I DAT VAN DE Qua trinh Ifim vi?c ciia h? thdng truyen dgng thiiy lyc dan dgng trgc lech lam co cau gay rung tren cac may hi?u chinh vfi chen ray thudng xay sy dao dgng ciia ap suat chfit ldng cong tac Dao dpng nfiy xuat hi?n lfi finh hudng cua lyc qufin tfnh, sy thay ddi ciia luc tac dyng tren cfic ban chen dam Idp da ba Ifit, cung nhu finh hudng bdi dpc trung dpng hpc cua bg cong tac Dao dpng fip suat h? thong TDTL se Ifim gifim tuoi thg va dg tin cay cua cac thiet bj thliy Iuc, lam giam hi?u suat truyen dpng, lam tfing tdn thfit nfing lugng cua he thong TDTL va toan bp may Do vay, nghien cu'u sy thay ddi cua ap suat he thdng TDTL la can thiet, giup cho vi^c khai thfic, sir dgng may hi^u qua Tap chi KHOA HQC GIAO THONG VAN TAI So 38 - 06/2012 Cong trinh khoa hpc II GIAI QUYET VAN DE He th6ng truyen dpng thuy lyc din dgng tryc l?ch tam ca cau gay rung tren m^y hi?u chinh vfi chen dudng ray thi hi^n tren hinh gom cd bam, dpng co vfi cac thilt bj thiiy lyc khfic nhu: van mgt chilu, van an toan, Trong do: E„ - biln dpng dfin hoi ciia ong dfin; Vo,„ - luu lugng rieng ciia dgng co thuy lyc; r^m - Ii? so ton that luu lugng ciia dpng co thuy lyc; V^^ - luu lugng rieng ciia bom thuy lyc; r^n - h$ so ton that luu lugng ciia bom thiiy lyc; p^,, - fip suat lfim vi?c cua van an tofin; Qi,n - luu lugng chat Idng qua van an tofin n^ Hinh Md hinh h? Ihdng truyen ddng thuy lire ddn ddng true lech ldm I Thiing ddu: Lgc ddu; Bam ihiiy luc; Ddng hd dp sual; Dong ca thuy lue; Van mgt chieu; Van an lodn; Van khoa Bom thuy luc cung d p chat Idng cdng tfie cho dgng co thuy luc dan ddng tryc lech tam CO cfiu gay rung tren may hieu chinh va chen ray He thdng TDTL cd su dung van an tofin 7, van khda de dfim bfio an tofin vfi gifim fip sufit tryc lech tam khdng lfim viec hoac qua tai Khi md van khda 8, bom se ndi thdng vdi thiing dfiu 1, chat Idng cdng tfie tii bom qua van trd ve thiing dau vfi khdng cung cfip cho ddng co thiiy luc Co cau ga^y rung hopt dgng ddng van khda 8, chat Idng cdng tfie he thdng TDTL dat gia trj can thiet, tryc lech tam quay CO cau gay rung hopt dgng thuc hien qua trinh lam viec Cfic gia thiet xay dung mo hinh bfii tofin nham nghien ciru cfic thong so dpng luc hge, cua he thdng TDTL dan dgng trgc lech tam co cau gay rung: Ddng chat Idng cdng tfie chay dudng dng la lien tyc, ti'nh toan bd qua lyc ma sfit t^ng d true cua dpng co thiiy lyc va lyc ma sat d van an tofin vi nhd, ban dSu dgng co thiiy Iuc dimg yen vfi ap sufit dfiu dudng dng bang Tir nhirng gia thiet tren, md hinh bai toan h? thdng TDTL dan dgng true lech tam co cau gay rung tren cfic may hieu chinh va chen ray dugc viet dudi dang he phuong trinh vi phan gdm Tap chi KHOA HQC GIAO THONG VAN TAI So 38 - 06/2012 Cong trinh khoa hpc phuong trinh ddng chfiy lien tyc ciia chat Idng cdng lfic ong din vfi phuong trinh can bfing md men tren iiyc ciia dgng co Ihiiy lyc Phirong Irinh ddng chfiy lien tyc dudng ong cao fip [I]: Qn-Ok„-Qv-Qm-Qc = (1) Vdi Qn - Luu lugng ly lluiyct cua bom, Q„ = V„„ n y (mVs); Qv - Luu lugng chat ldng rd ri d bom vfi dgng co thiiy lyc, Q ^ = (r„„ +• r„„ )p„ (mVs); Qm-Luu lugng Ifim vi?c ciia dpng ca thiiy lyc Q,n = V,„„.no (m/s); Qe - Luu lugng chat Idng Ifim biln dpng h? thong, Q^ = E„ - ^ (mVs); dt Qkn - Luu lugng chat Idng qua van an tofin, nlu p„ £ pkn tbi Qu = (Pn ~ PiLn)kkn ngirgc Ipi Qu = Phuong trinh md men tren trgc ciia dpng co thuy lyc dugc xfic djnh nhu sau: dn,, (2) Vdi Mm-Md men tren tryc cua dgng ca thiiy lyc, M „ = - ^ V „ _ (Nm); 2JI Mf - Mo men ma sat nhdt h? thdng thiiy lyc, Mf = f.no (Nm); M - Md men cfin chuyen dgng [2], M = M^ + M(, sin(27iii)t)(Nm); Jm - Md men quan tinh ciia cac phan tu chuyen dpng quy din vc trgc quay ciia dpng ca dfin dpng bam thiiy lyc [3], j_^ =1^.^"^ ^° (kg m^) He s6 tdn thfit luu lugng d bom thiiy lyc dugc xfic djnh [1]: Qn-d-lon) (m-Vs)/Pa [Pnl (3) H? sd ton thfit luu lugng d dpng co thiiy lyc dugc xac djnh [1]: Vom"D-0-n.J (mVs)/Pa 44) [Pm] Bien dpng dan hdi ciia ong dan cao fip dugc xfic djnh nhu sau: E, 20 E, Tap chi KHOA HQC GIAO THONG V-iN TAI (5.) So 38 - 06/2012 Cong trinh khoa hpc He so khdng deu ciia toe dg quay tren trgc I?ch tam co cau gay rung: =^ ^ - - ^ ^ (6) 03 He so ma sat nhat dirge xac djnh [1]: f ^ V„„.[p ].(1-T||,.n,„.
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