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SClENCETECHNOLOGYl VE MOT PHl/ONG P H A P NGHIEM BEN MQTSO CHI TIET VA CUM CHI TIET BQ GlA KHOAN DUNG DE KHOAN TAO L NO MIN TRONG KHAI T H A C T H A N HAM LO VUNG Q U A N G NINH A METHOD FOR MODELING STRENGTH OF DRILLING TRIPOD USED FOR HOLING BLAST OF COAL MINING IN QUANG NINH AREA Le Quy Chien, Dinh Van Chien N6I DUNG NGHIDN cau 2.1 Dac diem cua Id khoan tren gi/dng dao phap nghif m ben mot so chi tiet, cum chi tiet bo gia khoan dimg de khoan tao 16 no thi eong L6 khoan tren gUdng dao cCia dudng 16 CO b^n khai th^c than viing Quing Ninh bang phin mem ANSYS, Ket qua nghien ciifu dUOc dimg da6ng 16 cd ban la doi tUdng lam viec de tinh toan dung cu khoan, eac ehi ti^t, cum ehi tiet hb gia khoan va nghidm ben mpt so cum ehi tiet cua cua thiet bi khoan, vay viec kh^o sat thiet bj khoan, va phan tich dac diem cCia 16 khoan rat Tif khoa: Bp gia khoan, tao lo, no min, khai thac than, dung cu khai thac mi) can thiet Qua khcio sat tac gici thay cac 16 khoan tren gUdng dao cua diJ6ng 16 Abstract Cd b i n dCing khai thac than ham There are a lot of methods employed to determine the strenght of components ofa machine In this paper, 16 thu'dng co du6ng kinh (j) < 52mm, the method for modeling strength of drilling tripod that was used for holing blast of coal mining in Quang chieu sau 16 khoan L < 1,2-3m Ninh area by employing ANSYS software is presented The result can be used for designing and analysis of drill tools It also can be used to checking for strength of drilling parts Cac 16 khoan gom mot so loai: 16 Keywords: Drilling tripod, create holes, blast, coal mining, drill tools in mining khoan co du6ng tam vuong goc vdi mat gadng (song song vdi true dadng ThS Le Quy Chien, TrU(mgf)al hoc Cong nglii^p Qu^ng Ninli Ngaynhanbai: 01/08/2013 16); 16 khoan co dudng tam nghieng PGS.TS Oinh Van Cliien, TrUdng Sai hoc IVId-Dia chat Ng^ chap nhan dang: 05/10/2013 so vdi be mat gu'ong va true dadng 16, Email: ct>lenkhaDthiaiqni)gmail com goc nghieng dUdng tam cua cac 16 vien may, tinh toan mot so thdng so cua cac gUdng so vdi true dudng 16 la a = 5" -JI.OATVAND^ Theo chien liTdc phat trien cua chi tiet va nghiem ben mpt so cum chi 10°, gdc nghieng cCia dudng tam cac iganh Than den nam 2015, tam nhin tiet tren may khoan diJng de khoan tao 16 dot khau so vdi true dudng 16 la a = Ien nam 2020; s^n lu'dng than khai 16 no thi cong cac dUdng 16 CO 12"^ 15° (bang l).Hg chieu khoan tren hac ham 16 khoang 50 trieu tan/nam, bcin dung khai thac than ham 16 mat gUdng dao cua du'dng thdng 2,8 x 1,8m dudng 16 cd ban :hiem t i le c^ng I6n Di dat muc vung Quang Ninh Bang Lo khoan tren guong ciia dudng 16 eo ban leu do, nganh Than phai day manh Tom tiit Cd nhieu phUdng phap nghiem ben cac chi tiet va may Trong bai bao nay, nhom tacgiS trinh bay phuong 'iec 6ho c^c dudng 16 cd ban phuc vu ho cong tac khai thac Hien nay, thi ong cac du6ng 16 ca ban nganh han chu yeu dung cong nghe khoan 10 Be tang nang suit, tang tuoi hp cua chi tiet v^ may Ichoan can thiet ihai nghien cijftJ thiet ke cac chi ti^t va Khu vuc dutfng thong Cae thong so Chieu rong (m) Chieu cao (m) Buong md rong Cd Khong Sau Co Khong Sau ehdng tam chong tam hoan thien chong tam chong tam hoan thien 2,1 2,7 1,8 2,6 1,2 2,0 4,5 3,5 4,2 3,2 3,5 2,7 (Cac kich thUdc ghi bang la toi thieu chieu day Idp be tong d dUcing thong la 300mm va khu vi/c buong m& rpng lay trung binh la 350mm) So TapdiiKHOA HOC&CONG NGH| 141 ^ M ! l « y j ! l » ! d c N G NGJIE 2.2 Tinh todn ILTC tac dong len thiet bj khoan 2.2.1 Cdc thong so dUa vdo tinh toan Viec lifa chon thong so tinh toan cho thiet bj khoan dUdc dua tren mot so chi tieu ky thuat sau: - Di chuyen dUdc dudng 16 co kichthi/dcla 1,8 x 2,6m - Khoan dUdc cac 16 tren gu'ong dao cd kich thudc nhd nhat la 1,8 x 2,6m va Idn nhat la 4,5 x 3,5m; -Sdcan khoan: 01 - Chieu sau lo khoan < 3m - Dudng kinh 16 khoan 13cm/ph (7,8m/ gid) -KhoandUdcdatdac6dpcijfngf^ \-K^- PxM-COS (a-n|i) - P;,|2-cosB = => X^ = Pxi,-cos(a -I- i|i) -I- Pj(i2''^°^^ + ^D ZY = (8) (9) => Y^ +Yo +G^ - PxM-sinta + M" Pxi2^'"9 = (12) =>Y^ = Pxii-sina + ip) + Pxi,sine - Y^ - Y^ Trong do: - Gdc tao bdi xylanh nang trucrt v l trUdt; _,„-;„r I,, = arcsin '" cosa \ ; ,14I}, = arcsin CF ) ' i^EB.sin(a+62'') i)j - Gdc tao bdi xylanh ning can va can; 2.3 Tinh toan kiem nghiem ben mot so cum chi tiet bang phin mim Ansys Trong gidi han bai bao nay, nhdm tac g i l tinh t o i n nghiem ben dung cu khoan cCia may khoan gom mui khoan va chodng khoan 2.3.1 Tinh ben chodng khoan Ta tinh ben mui khoan tai vj trf liic t i e dung !en chodng la Idn nhat: ^Kma, = ^0^ 0[^]; ^K" 45000[Nmm]; Chodng khoan cd cau tao nhu (hlnh 6) ta SLT dung p h i n mem Ansys de kiem nghiem ben eho chodng khoan (do dp ben chi tiet bang p h i n m^m md phdng tren may tinh Ansys 12) Ket qua tinh toan dUdc the hien tren hlnh 7,8,9,10 Dieu kien de chodng khoan d i m b i o ben: o < [aj= —— d i y : CF = -JI4 +\^ - 2.1^.1^ cos a EB ^ V n + l f - 2.l„.l,.cos(a + ' ' ) (p = (a - 6) Gdc tao bdi xylanh n i n g trUdt va can; y = 90°-o: Gdc tao bdi khdp quay tren va trUpt; a = -^ 45": Gdc quay cua c i n so vdi phUdng ngang; I, = 0,82[m]; 1^ = 1,70[m]; 1^ = 1,0[m]; I, = 0,45 [mm]; l^ = 0,84[m];l^ = 0,177[m]; 1^ = 0,44[m]; 1^ = l,25[m]; 1^ = 0,26[m]; l,„ = 0,269[m]; l „ = 0,32[m]; h = 0,25[m] - o |_: Gidi han chay cua vat lieu lam chodng khoan (chpn thep sCr dung la Ct5 ta cd o^^^ = 260N/mm'); - n = 1,5: he so an toan, vdi chodng thudng lay n = 1,4 -H 1,6 - kj = 2: he sd tai ddng lam viec; =>o^^-4,2854.10« N/m^< [O] - ^^^L^ =86^7.10^ [N/m'] Vay chodng khoan bao d i m dieu kien ben lam viec 2.3.2 Tinh ben mui khoan Tinh ben mui khoan tai vi tri liic taedung len mui II Idn nhat: p^^^^ ^ 9010[N]; Q„ ^ 2600[N]; iilnh f)6 thi life tren xylanh nang Hinh 5.fiothi lUc tren xylanh nang can trugt M, = 45000[Nmm]; Mui khoan ed kich thiide nhd, cau tao phtfc tap (hlnh 11) nen ta kiem nghiem ben bang phan mem Ansys (do dp ben chi tiet b i n g p h i n mem md phdng tren may tinh Ansys 14) Ket qua tinh t o i n diipc the hien tren hlnh 12, 13,14,15 Dieu kien de mui khoan dam So • TapdiiKHOAHOC&CONGNGHE ,43 •H!WJ!l»Mc6NG NGH|^ Hinh Cau tao va hinh dang chobng khoan Hlnh 7, Bieu bien dang tren choong khoan Hinh Bieu ung suat tren chobng khoan khoan lam viec khoan lam viec 1> Hlnh 9, Bieu litig suat tren chobng khoan theo Hinh 10 Bieu ilng suat tren chobng khoan theo nguyen ly cue dai nguyen lycUc tieu ^ = < Hinh n Cau tao va hmh dang mui khoan # THinh 12 Bieu bien dang tren mui khoan Hinh 13 Bieu ilng suat tren mui khoan khoan khoan lam viec lam viec n.k, 1>Hinh 15 Bieu ling suat tren mui khoan theo nguyen ly cifc tieu (13) - o^^: Gidi han chiy cua vat lieu lam mui khoan (chon thep sCf dung la thep hpp kim dung cu cd dp ben cao 40XC, tacda^^=1080N/mm^); - n = 1,5: he sd an toan, vdi mui khoan thudng lay n = 1,4 -^ 1.6, - k^ = 2: he so tai trpng dpng lam viec; Vay o^^, = 299,58.10^ N/m= < [o] = 4 TapdiiKHOAHOC&CONGNGHE So Hinh 14 Bieu Ung suat tren mui khoan theo nguyen ly cue dai 108Q10 ^3Qoio>.[^/rn2], Mui khoar 1,5.2 dam bao ben lam viec, TCf ket qua thu dUOc ta nhan thai Lfng suat ldn nhat cua mdt so chi tie cua dung cu l^hoan co gia tri o^^, • 299,58.1 OWmo^^, - 299,5810^ N/m^ < [aJ 360.10"^N/m=-360.1 onPal ij „ - Gidl han chay cua vat lieu du'c dung de che tao, chon vat lieu cheta SClENCETECHNOLOGYl ic chi tiet cua dung cu khoan la thep ky thuat va yeu cau dat khoan 3p kim dung cu cd ben cao 40XC, Id no phuc vu dao cac dudng Id ^^-1080kN/cm' Bien dang cCia cac chi tiet cua dung khoan dat gia tri nhd can thiet Trong qua trinh tinh toan nhdm t i e CO b i n d md than vung Q u i n g Ninh khoan thi cong dubng 16 co ban dung khai thac Gdp phan t i n g n i n g suit, giam gia than ham 16 vung Quang Ninh" TrUbng Dai hoc mo- khai thac, nang cao tuoi thp eua 6ia chat (2010), cac cum chi tiet va chi tiet cua thiet bi I da xac dinh dupc vi tri xuat hien a^^_ khoan diing khai thac than h i m jy la can c i i de tang cudng v i t lieu va Id vung Q u i n g Ninh 13] VO Liem Chinh, Co sc( thiet ke may xay dung, NXB Xay dung (2002), [4] -Dmh Ba Tru, Hoang Van LOi, HKdng dan sif jng cao he sd an toan cho cum ehi tret Dng q u i trinh lam viec, [2] Le Quy Chien, Luan van thac sy ky thuat "Nghien cuU tinh toan mot so thong so cua thiet bt dung Ansys, Hoc vien Ky thuat Quan sif (2003) Phin bien khoa hoc: TS Le Thi/tfnq Hien 3.14HAN X^T VA KET LUAN [51 Cam nang Cong nghe va Thiet bi mo, NXB Khoa hoc vaKy thuat (2006), TU cac ket q u i nghidn cUu neu tren [6] Vien Ky thuat Cong binh, Bao cao tong ket 10 phep tinh toan, lUa chpn, nghiem TAI LIEU THAM KHAO de tai "Nghien cUu thiet ke thiet bi khoan thi cong 3n dUdc dung cu khoan va cac chi tiet [1], Nguyen Van Can va NNK, SUc ben vat lieu, dudng ham quan sU khau vUa va nhb" - ma so l i e cua gia khoan theo eac thdng sd NXB Giao thong Van tai Ha Ngi (199S), Hdi THI THOGldl NGANH CCKHf T H A N H PHO HA Ndi NAM 2013 BTDL-05G/03 KHAI MACDANHGlANGOAlCdABWdlHETHdNG QMS ISO 9001:2008 Trong ba tif 3/10 den 5/10/2013, trdcflig Bai hoc Cong nghiep Ha Ht\ dang cai to chu'c Hoi thi thggioi nganh cokhiThanh nam 2013.6ay la hoat dong thu6ng nien ciia Lien doan Lao dbng Ha Ngi Hoi thi la hoat dbng f nghia nh3m thijcdly phong trao"On Ij? thuyft, luyen tay nghe, thi thogibi"trong cong nhan lao dgng ThO nbi noi chung va cbng nhan nganh CO noi rieng Hbi thi da thu hut 21 dbi thuoc 62 doanh nghiep gom 120 thi sinh V6i co sb vSt chat duoc diu t u hien dai nhu ph6ng may CNC, may hSn tu dgng, may cat plasma, may cat t u dbng, may cat thiiy lire, hai phan thi ly thuyet va thuc hanh deu difoc dien d^m bao dting tieu ehi ei^a hgi thi de Oai dien cho dcfn vi dang cai t6 chiic, TS.Tran Diic Quy - Hieu trudng vui mifng chao don cac vj dai bieu, cac doan cung cac thi sinh da ve tham du Hoi thi va cam ket tao mgi dieu kien de hoi thi dien tot dep hien ke hoach danh gia kiem chiing ciia to chiJc Bureau Veritas (BV) vdi Ihe thong van hanh QMS ISO 9001:2008 sang 24/9/2013 tai trUdng Dai hoe Cbng nghiep Ha Noi, Le Khai mac danh gia ngoai ciia BV vdi he thong QMS ISO 9001:2008 da di/oc dien ra, Trong qua trinh danh gia tai cac don vj, doan chuyen gia danh gia ngoai cDa BV se chira nhutig diem manh can tiep tuc phat huy, dong thdi eung ehi nhOUg diem han ehe, ehUa phii hcfp can khac phuc Tren cosd do, danh gia vien se dua eac khuyen nghi phO hdp giup cac ddn vj eung nhif nha trudng cai thien, nang G O chat lugng he thong van hanh |QMS ISO 9001:2008 DU kien ket qua danh gia ngoai se difdc cong bo vao cuoi thang 10/2013 S o •TapdiiKHOAHOC&CONGNGHE 45 ... Dau khoan dien cd cau tao dong bd, cd Cd cau truyen xich de an mui nhu tfnh ben cho cac chi tiet, cum chi khoan vao 16 khoan va dUa mui tiet thiet k^ ta dUa md hlnh tinh toan khoan khoi 16 khoan; ... so cum chi tiet bang phin mim Ansys Trong gidi han bai bao nay, nhdm tac g i l tinh t o i n nghiem ben dung cu khoan cCia may khoan gom mui khoan va chodng khoan 2.3.1 Tinh ben chodng khoan Ta... thiet Trong qua trinh tinh toan nhdm t i e CO b i n d md than vung Q u i n g Ninh khoan thi cong dubng 16 co ban dung khai thac Gdp phan t i n g n i n g suit, giam gia than ham 16 vung Quang Ninh"
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