Nghiên cứu ảnh hưởng của tải trọng đến chuyển động của cụm trục các đăng ô tô tải nhẹ

NGHIEN CU'U-TRAO D6I NGHIEN CU'U ANH HU'dNG CUA TAI TRONG OiN CHUYEN DONG COA CUM TRUC CAC OANG TO TAI NHE RESEARCH EFFECTS OF LOAD TO M O V E M E N T OF C A R D A N SHAFT ON LIGHT TRUCKS Tran Hiru Danh", Nguyln Thanh QuangS Dao Duy Trung' 'Trucmg Dai hgc Su pham Ky thuat VTnh Long ^Trudng Dai hoc Su pham Ky thuat Hung Yfin ^Vifin Nghien ciiu Co TOMTAT Bdi bdo trinh bdy nghien cicu dnh huang cua tdi trgng den chuyen dgng ciia cum true cdc ddng trin to tdi nhe Mo hinh khong gian cum true cdc ddng dugc coi nhu Id mgt hi nhieu vgt lien kit vai bang cdc khdp Nghiin cuu ung dung phdn mem Inventor de mo phong dnh huang cua tdi trgng den chuyin dgng cua true cdc ddng duac phdn dnh thong qua gid tri cua cdc phdn luc lien kit, chuyin vi, van toe gia toe vd mo men lan nhdt xdc dinh dugc tgi cdc khap he tuang ung vol cdc chi tdi khdc Tir khoa: True cdc ddng, tdi trgng, phdn luc lien kit This paper presents a study of the influence of loads to movement of cardan shaft on light trucks The 3D model needs to be seen as a multibody system having bodies linked together by joints Study apply to Inventor software simulate to the influence of loads to movement of cardan shaft on light trucks arefeflected through values ofthe reaction forces, displacements, velocities, acceleration, and maximum moments determined at the joints in the system corresponding to the different loads Keywords: Cardan shaft Loads, Reaction forces M d DAU Nganh Cdng nghifip d td Vifit Nam hifin nay, ke tir sau gia nhap WTO thi san lugng d to san xuat nudc cang tang manh, vdi xu hudng ngi dia hda phu tung fi td dan thay thfi cac san phdm nhap khau ciing loai Vi vay, viec nghien ciiu che tao cac chi tiet dd cd cum true cac dang truyfin luc nham dap iing yeu cSu fren la xk cSn thifit ISSN 0866 - 7056 B TAP CHi CO KHf VlfiT NAM, Sd nam 2017 www.cokhivietnam.vn Tren thfi gidi cd cdng trinh nghifin ciiu NGHIEN CLTU-TRAO06l ve true cac dang nhu: "One the dynamics of the transmission with a double cardan joint" Clia Carlo Brutti et al, 1999 Khi nghien cuu, tdc gia da gia thuyfit bd qua ma sat d cac khdp quay va xe hoat dgng d che thudng thi tinh dan hdi cda true cac dang khong anh hudng dang kfi tdi cac thdng sd ddng luc hgc cua cgm true cac dang kep [6] Cdng trinh: "Mechical efficiency Analysis of a cardan joint" cua M Cavacece, 2004, chii yen tap trung vao viec phan tich tinh ma sat va hifiu suat cua khdp cac dang Ddi tugng nghien ciiu bai bao la cum true cac dang he thdng truyen luc xe d td tai LF3070G1 cd tai trgng t4n D^c tinh ky thuat chinh d td tai nghien cuu dugc thfi hifin bang Muc dich nghifin ciiu: Md phdng sd khao sat cac lifin kfit cum true cac dang td tai nhe Phan mfim Inventor da md phdng phan tich cac phan luc tai cac kh(ip co he tucmg ling vdi cac che tai khac Phucmg phap nghifin ciiu: Su dung md hinh khdng gian cum true cac dang d td tai nhe dugc COI la mdt h§ nhifiu vat lien kfit vdi bang cac khdp dgng hgc CJ nudc, chua cd nghifin cuu nao vfi cum true cac dang tren td Bdng Ddc tinh ^ thugt cua td tdi LIFAN LF3070G1 Kieu loai Dtm vi mm mm Kich thudc toan bo {dai x rpng x cao) Chieu dai ca sd Vet banh trudc Vet banh sau mm mm Tg trpng ciia xe Tai trpng cua xe kg kg Trong lugng toan bp kg LF30370G1 5990x2190x2540 3350 1640 1630 4230 2980 7405 8.25 -16, 8.25-20 Kieu lop Cong suat max./Sd vdng quay kW/vg Mo men xoan max./S6 vong quay N.m/vg 81/3000 320/2000-2200 1-7.31; n-4.31;III-2.45; IV-1.54;V-1.00;R-7.66 Ty sd truyen cac tay so NOI DUNG NGHIEN CUtJ 2.1 Xay dung md hinh khong gian cum true cac dang td tai nh^ Md hinh khdng gian cum true cac dang d td tai nhe hinh dugc coi la mdt he nhifiu vat; Nang cac dang, than nhd cac dang true cac dang lifin ket vdi bang cac khdp chu thap va then hoa Trong dd: Nang cac dang lifin kfit vdi than nhd cac dang bang khdp chii thap; than nhd cac dang lien ket vdi true cac dang bang khdp then hoa; true cac dang lifin kfit vdi nang cac dang bang khdp chii thap [1], [3] ISSN 0866 - 7056 TAP CHi CO KHf VIET NAM, Sd nam 2017 www_rnkhivip|-nnni NGHI§N CU'U-TRAO D I Hinh Mo hinh khong gian cum true cdc dang to tdi nhe 2.2 Mo phong cac phan lyc lien ket, chuyen vi, van toe, gia toe, mo men tai cac khdp cac dang to tai nhe 2.2.1 tfng dung phan mem Inventor mo phong Cac tifin ich ciia Autodesk Inventor: Dl dang tao md hinh 3D true quan va cac ban ve 2D; lap rap hoan chinh cac chi tifit; md phdng l4p rap va hoat dgng cua cac co cSu; thiet kfi mo hinh va mo phdng ddng luc hgc cua cac co ciu cac linh vuc co khi, tu dgng hda, chfi tao may, co chinh xac mdi trudng 3D, quan sat md hinh boat ddng cua md hmh thiet kfi va tu md phdng ta cd thfi kifim tra dpng luc hgc, hifiu chmh thifit kfi Ngoai cdn co thfi chuyfin ddi tii chi tiet, co cau lap rap ban ve 2D; t^o khudn mau tii mlu solid; tao md hinh san pham ban; tao md hinh san pham tdm; tao he thdng phan tu dii lieu [4] 2.2.2 Dinh nghta cdc vat vd Hen ket cifm trifC cdc ddng Autodesk Inventor la phan mfim thiet Trong bang 2, dinh nghia cac vat lien ket kfi CO 3D ciia hang Autodesk USA, xay cum true cac dang md lunh Inventor [4] dimg vdi cdng nghe thich nghi ciing vdi cac kha nang md hinh hda khdi ran Bdng Dinh nghia cdc vdt vd lien kit c « trgc cdc ddng mo hinh Inventor: TT 01 02 03 04 05 06 07 08 09 TSn chi ti^t lien ket, v^t Nang cac dang (1 )-i-0 bi kim dau tren va dau dudi Than nho cac dang + bi kim dau tren va dau dudi Than cac dang+0 bi kim dau tren va dau dudi Nang cac dang (2)+0 bi kim dau tren va dau dudi Nang cac dang (1) + True chir thap True chir thap + Than nhd Than nhd cac dang + Than cac dang Tmc cac dang + Tmc chir th$.p True chir thap + Nang cac dang (2) 10 Nang cac dang {l)+ThSn nhd 11 Than cac dang+Nang cac dang (2) Dac tinh ma sat cua khop Lifin k6t Inventor Moi lap ghep Loai liln ket Chat Co dinh Mdi ghep ciing Chat Co dinh Moi ghep c6ng Chat Co dinh Mdi ghep ciiag Mdi ghep Cling Chat Cddinh Obi Obi Then hoa Obi Obi True chir thap True chir thap Khdp quay Khdp quay Khdp trugt Khdp quay Khdp quay Ma sat lan Ma sat lan Ma sat trugt Ma sat lan Ma sat lan M6i ghep ciing Mdi ghep quay M6i ghep miQt Mdi ghep quay M6i ghep quay Khdp quay Ma sat lan M6i ghep quay Khdp quay Ma sat lan Mdi ghep quay ISSN 0866 - 7056 TAP CHf CO KHf VlfiT NAM, Sd nam 2017 www.rnkhiviptn am.vn NGHIEN CU'U-TRAODCI 2.2.3 Mo hinh hoa cftm triic cdc dang Ta chuyfin lap ghep cum true cac dang sang mdi tnxdng Dynamic Smiulation nhu bang Bdng Cdc vi tri moi ghep sir dung Dynamic Simulation TT Moi ghep Dynamic Simulation Dinh nghia moi ghep Hinh Mo hinh hoa cum true cdc ddng: 1, 4) Ngng cdc dang; 2) Thdn nho; 3) Thdn cdc ddng, 5, 6)Trgc cha thdp 2.2.4 Mo phong xdc dinh cdc phan lire lien 01 Rigid: Moi ghep Cling Welding: Moi ghep han 02 Rotational: Mdi ghep quay Revolution: Khdp quay ban le 03 Slider: Mdi ghep trugt Prismatic: Khop trugt ranh tiet dien da giac kit a) Kich boat mdi trudng mo phdng: Environments * Dynamic Simulation b) Tao cac khdp ndi: Envuonments—••Dynam icSimulation—^Dynamic Simulation Settings -^ Bd dau Automatically Update Translated Joints—>InsertJoint^Revolution—>Componet 1: Chgn phan thii nhat^^Component 2: Chgn vdi chi tifit thii 2^-Flip: Dao chgn hudng true Z ^ A p p l y dfi kfit thuc tao khdp Cac khdp 1, 2, 4, 5, cum true cac dang dugc trinh bay bang Bdng Cdc khap cum true cdc ddng Khdp Goc toa dd / T^o kh6p quay ban \k revolution giua welded group (nang cac dang, bi tren va o bi dircti) va true chu \ Tao khap quay ban IS revolution giiia welded group (nsng c4c dang, bi trSn v^ b bi duoi) va true chfi thap Tao khdrp quay ban le revolution giiia welded group (than nho cac dang, bi tren v^ bi duoi) va trye chii thap Kh&p Tao khop quay trupl Prismatic giua welded group (Than nho cac dang, bi tren va bi duoi) va welded group (than cac dang, bi trSn va bl duoi) Tao khop quay quay giiia revolution welded group (than cac dang, bi tren va bi duoi) v6i true chii th^p Ghe t^a d? r ^ \ \ \ ISSN 0866 - 7056 TAP CHf CO KHI VlfiT NAM, So nam 2017 NGHIEN CD'U-TRAO06l c) Cac che tai trgng Trong dd: K^- He sd tai trgng ddng dugc xac dinh bang thuc nghiem Ddi vdi o to tai - Chfi dd tmh theo md men ldn nhat cua ddng co: K(, =(2,0-2,5) TisdtmySn luc chung iT=ihs-io WH=Mema>[-'fii'?( =320.7.31 0,9 = 2105,2(Nm) Kfit qua tinh toan d cac cdng thiic 1, 2, la gia tri ciia cac che tai trgng can khao (1) Trong dd: i^ - Ti s6 truyfin hop sd d sd truyfin (i^ - 7.31); la hifiu sudt cua hop sd d) Bat Ivc tac dyng va md phdng (h, = 0.9} Budc 1: Lkn lugt dat: M^-2l05,5(Wm), Mj=1874,8(Wm}, M^ = 30737(Nm) vao dau nang cac dang - Chfi dd tmh theo he sd bam cue dai phanh K = ^2 ^at-^bx - = 3B500.0,9 5 - - = l874,8(Win) (2) Budc 2: Chgn Simulation Player -> Md phdng den tai trgng dat chfi 100 % Trong dd: G2 - 38500(w) la tai trgng 2.2.5 Kit qud khdo sdt phan bd cau sau; ^^ax = 0-9 ^^ sd bam cue dai phanh, /Q = 6.57 ti sd tmyen luc chinh Kfit qua khao sat dugc thfi hifin tren cac bieu dd phan luc tac dung lfin cac khdp dugc xac dinh theo hinh va bang nhu sau: Chgn Output Grapher —>• Standard joints -> Revolution (1,2,4,5,6)-> force-* chgn force, force(X), force(Y), force(Z): Chfi tinh theo tai trgng cue dai xuat hifin td di qua dudng gd ghfi < =Me^«-'