1,MC pulley kunanirwa no gusesengura impamvu　

　　Ibikoresho bya MC nylon bihinduka polyamide muburyo bwa chimique kandi bigizwe na covalent na molekulari, ni ukuvuga intera-molekulari ihujwe na covalent bond na inter-molekile ihujwe na molekile.Iyi miterere yibikoresho ifite ibyiza bitandukanye nkuburemere bworoshye, kurwanya kwambara, kurwanya ruswa, kubika, nibindi. Ni plastiki yubuhanga ikoreshwa cyane [1].　

　　MC nylon pulley ikoreshwa kumuryango wikingira wa Tianjin Metro Line 2 izaba ifite uburyo bubiri bukurikira bwo kunanirwa nyuma yigihe runaka: (1) kwambara kumpera yinyuma ya pulley;(2) gutandukanya impeta y'imbere ya pulley no gutwara.

Impamvu zuburyo bubiri bwo kunanirwa, isesengura rikurikira rirakorwa.　

　　. guhangayikishwa n'umwanya.　

　　(2) inzira ntabwo igororotse cyangwa inzira yumurongo ntabwo iringaniye, itera kwambara hanze.　

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　　2 MC pulley inzira yo kubara ubuzima　

　　MC nylon pulley ni polymer yububiko bwibikoresho byubwubatsi, mubikorwa nyabyo byakazi, nubushyuhe kimwe nuruhare rwumutwaro, imiterere ya molekile yimiterere idasubirwaho, amaherezo iganisha ku gusenya ibintu [3].　

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　　F (P) = K.τ (1)　

　　aho P ni umutungo wumubiri nubukanishi agaciro;K nigipimo cyibisubizo bihoraho;τ ni igihe cyo gusaza.　

　　Niba ibikoresho byaragenwe, noneho agaciro P yibipimo bifatika byibi bikoresho byagenwe, kandi indangagaciro zemewe za tensile no kugunama zashyizwe hejuru ya 80%, noneho isano iri hagati yigihe gikomeye na K ihoraho ni　

　　τ= F (P) / K (2)　

　　K ihoraho n'ubushyuhe T bihaza umubano ukurikira.　

　　K = Ae (- E / RT) (3)　

　　aho E ni imbaraga zo gukora;R ni gazi nziza ihoraho;A na e bihoraho.Dufashe logarithm ya formula ebyiri zavuzwe haruguru mubare no gutunganya deformasiyo, turabona　

　　lnτ = E / (2.303RT) C (4)　

　　Mubisobanuro byavuzwe haruguru, C ni ihoraho.Ukurikije ibigereranyo byavuzwe haruguru, birazwi ko hari isano isa hagati yigihe gikomeye nubushyuhe.Dukomeje hamwe no guhindura ibipimo byavuzwe haruguru, turabona.　

　　lnτ= ab / T (5)　

　　Ukurikije inyigisho yisesengura ryumubare, ihinduka a na b murwego rwo hejuru ryaragenwe, kandi ubuzima bukomeye kubushyuhe bwa serivisi burashobora kubarwa.　

　　Tianjin metro umurongo wa 2 nubusanzwe sitasiyo yo munsi, kubera uruhare rwumuryango wikingira no kugenzura impeta, ubushyuhe pulley iherereyemo burahagaze neza mumwaka wose, bipimwa no gufata impuzandengo ya 25°, nyuma yo kugenzura imbonerahamwe, dushobora kubona a = -2.117, b = 2220, kuzana t = 25° muri (5), dushobora kubonaτ = Imyaka 25.4.Fata ibintu byumutekano bya 0,6, hanyuma ubone agaciro kumutekano wimyaka 20.3.　

　　. Igikorwa cyo guhinduranya imitwaro cyabyaye ubwihindurize budasubirwaho no guhindura imikorere ya molekile, abakozi ba mashini ku ruhare rwumunyururu wa molekile, babyara kuzunguruka no kugoreka, gushiraho ishusho ya feza na shear band ya silver ishusho, byerekana umunaniro, hamwe no kwegeranya nini umubare wo guhinduranya ukuzenguruka kwipakurura, ishusho ya feza yagutse buhoro buhoro, ikora igikoma, kandi yaguka cyane, amaherezo bituma havunika ibintu byangiritse.　

　　Muri iyi mibare yubuzima, isesengura ryubuzima rikorwa mubihe bidukikije byiza, ni ukuvuga inzira iringaniye kandi urugi rwumuryango narwo ruringaniye.　

　　Banza usuzume ingaruka zinshyi ziremereye mubuzima: buri rugi rwo kunyerera rufite pulleys enye, buri pulley igabana kimwe cya kane cyuburemere bwumuryango, nyuma yo kugenzura amakuru ko uburemere bwurugi rwanyerera ari 80kg, uburemere bwumuryango burashobora kuboneka: 80× 9.8 = 784 N.　

　　Noneho sangira uburemere kuri buri pulley nka: 784÷ 4 = 196 N.　

　　Ubugari bwurugi runyerera ni 1m, ni ukuvuga, burigihe burigihe umuryango ufunguye ugafungwa kuri 1m, hanyuma ugapima diameter ya pulley ni 0.057m, urashobora kubarwa nka perimetero: 0.057× 3.14 = 0.179m.　

　　Noneho urugi rwo kunyerera rufungura rimwe, umubare wimpinduka pulley ikeneye kugenda irashobora kuboneka: 1÷ 0.179 = 5.6.　

　　Dukurikije imibare yatanzwe n’ishami rishinzwe imicungire y’umuhanda, umubare w’iruka ku ruhande rumwe rw’ukwezi ni 4032, ushobora gukomoka ku mubare wo kwiruka ku munsi: 4032÷ 30 = 134.　

　　buri gitondo gariyamoshi izagerageza umuryango wa ecran inshuro zigera ku 10, bityo umubare rusange winzugi zinyerera kumunsi ni: 134 10 = 144 inshuro.　

　　urugi rwo kunyerera inshuro imwe, pulley yo kugenda 11.2, umuryango wo kunyerera kumunsi ufite 144 cycle cycle, bityo umubare rusange wa pulley ukubita kumunsi: 144× 5.6 = 806.4.　

　　Buri cyiciro cya pulley, tugomba kugengwa ningaruka zingufu, kugirango tubashe kubona imbaraga zayo inshuro: 806.4÷ (24× 3600) = 0.0093 Hz.　

　　Nyuma yo kugenzura amakuru, 0.0093 Hz iyi frequence ihuye numubare wizunguruka yegereye ubuziraherezo, byerekana ko inshuro yumutwaro ari muke cyane, hano ntukeneye kubitekerezaho.　

　　.× 0.001.1 = 1.21× 10-6m2　

　　Ukurikije ibipimo byumuvuduko: P = F / S = 196÷ 1.21× 10-6 = 161× 106 = 161MPa　

　　Nyuma yo kugenzura imbonerahamwe, umubare wizunguruka zihuye na 161MPa ni 0.24×106;ukurikije ukwezi kuzenguruka inshuro 4032, umubare wizunguruka mumwaka urashobora kuboneka: 4032×Inshuro 12 = 48384　

　　Noneho dushobora kubona uyu muvuduko uhuye nubuzima bwa pulley: 0.24× 106÷ 48384 = imyaka 4.9