Indlela Yokunquma Isici Sokuphepha Se-Roller Chain

Indlela Yokunquma Isici Sokuphepha Se-Roller Chain

Ezinhlelweni zokudlulisa izimboni, isici sokuphepha seketanga lokugoqa sinquma ngqo ukuzinza kokusebenza kwemishini, impilo yesevisi, kanye nokuphepha komqhubi. Kungakhathaliseki ukuthi ukudlulisa okunzima emishinini yezimayini noma ukudlulisa ngokunemba emigqeni yokukhiqiza ezenzakalelayo, izici zokuphepha ezibekwe ngendlela engafanele kungaholela ekuphukeni kweketanga ngaphambi kwesikhathi, isikhathi sokungasebenzi kwemishini, ngisho nezingozi. Lesi sihloko sizochaza ngokuhlelekile ukuthi singanquma kanjani isici sokuphepha seketanga lokugoqa, kusukela emiqondweni eyisisekelo, izinyathelo ezibalulekile, izici ezithonyayo, kuya ezincomweni ezisebenzayo, ukusiza onjiniyela, abathengi, kanye nabanakekeli bemishini benze izinqumo zokukhetha ezinembile.

I. Ukuqonda Okuyisisekelo Ngesici Sokuphepha: Kungani Kuyi-"Lifeline" Yokukhetha I-Roller Chain

Isici sokuphepha (SF) yisilinganiso somthamo wangempela wokuthwala umthwalo weketanga eligoqekayo nomthwalo wangempela wokusebenza. Empeleni, sinikeza "isilinganiso sokuphepha" sokusebenza kweketanga. Akugcini nje ngokuqeda ukungaqiniseki njengokushintshashintsha komthwalo kanye nokuphazamiseka kwemvelo, kodwa futhi kuhlanganisa nezingozi ezingaba khona ezifana namaphutha okukhiqiza iketanga kanye nokuphambuka kokufakwa. Kuyinkomba ebalulekile yokulinganisela ukuphepha nezindleko.

1.1 Incazelo Eyinhloko Yesici Sokuphepha
Ifomula yokubala isici sokuphepha yile: Isici Sokuphepha (SF) = Umthamo Womthwalo Olinganiselwe We-Roller Chain (Fₙ) / Umthwalo Wokusebenza Wangempela (F_w).
Umthamo womthwalo olinganisiwe (Fₙ): Kunqunywa umenzi weketanga ngokusekelwe ezintweni, isakhiwo (njenge-pitch kanye nobubanzi be-roller), kanye nenqubo yokukhiqiza, ngokuvamile kufaka phakathi isilinganiso somthwalo oguqukayo (umthwalo ohambisana nokuphila kokukhathala) kanye nesilinganiso somthwalo omile (umthwalo ohambisana nokuphuka okusheshayo). Lokhu kungatholakala kumakhathalogi omkhiqizo noma ezindinganisweni ezifana ne-GB/T 1243 kanye ne-ISO 606.
Umthwalo Wokusebenza Wangempela (F_w): Umthwalo omkhulu kakhulu uchungechunge olungawumelana nawo ekusebenzeni kwangempela. Lesi sici sicabangela izici ezifana nokushaqeka kokuqala, ukunqwabelana ngokweqile, kanye nokushintshashintsha kwesimo sokusebenza, kunokuba kube umthwalo obalwa ngokwethiyori.

1.2 Izindinganiso Zemboni Zezinto Ezivumelekile Zokuphepha
Izidingo zezinto zokuphepha ziyahlukahluka kakhulu kuzo zonke izimo zohlelo lokusebenza. Ukubhekisela ngqo "kusici sokuphepha esivumelekile" esichazwe yizindinganiso zemboni noma yizindinganiso zemboni kubalulekile ukuze kugwenywe amaphutha okukhetha. Okulandelayo kuyisithenjwa sezinto zokuphepha ezivumelekile zezimo zokusebenza ezivamile (ngokusekelwe ku-GB/T 18150 kanye nomkhuba wezimboni):

II. Inqubo Eyisisekelo Yezinyathelo Ezi-4 Yokunquma Izici Zokuphepha Ze-Roller Chain

Ukunquma isici sokuphepha akuyona ifomula elula; kudinga ukuhlukaniswa kwesinyathelo ngesinyathelo ngokusekelwe ezimweni zangempela zokusebenza ukuqinisekisa idatha yomthwalo enembile nethembekile esinyathelweni ngasinye. Inqubo elandelayo iyasebenza ezinhlotsheni eziningi zezinhlelo zokusebenza ze-roller chain zezimboni.

Isinyathelo 1: Nquma umthamo womthwalo olinganiselwe we-roller chain (Fₙ).
Beka phambili ukuthola idatha kukhathalogi yomkhiqizo womkhiqizi. Naka "isilinganiso somthwalo oguqukayo" (ngokuvamile esihambisana namahora ayi-1000 okuphila kokukhathala) kanye "nesilinganiso somthwalo oguqukayo" (esihambisana nokuqhekeka kokudonsa okuguquguqukayo) okuphawulwe kukhathalogi. Okubili kufanele kusetshenziswe ngokwehlukana (isilinganiso somthwalo oguqukayo sezimo zomthwalo oguqukayo, isilinganiso somthwalo oguqukayo sezimo zomthwalo oguqukayo noma izimo zesivinini esiphansi).
Uma idatha yesampula ingekho, izibalo zingenziwa ngokusekelwe ezindinganisweni zikazwelonke. Uma sithatha i-GB/T 1243 njengesibonelo, isilinganiso somthwalo oguqukayo we-roller chain (F₁) singalinganiswa kusetshenziswa ifomula: F₁ = 270 × (d₁)¹.⁸ (d₁ ububanzi bephini, ngo-mm). Isilinganiso somthwalo omile (F₂) cishe siphindwe kathathu kuya kahlanu kunesilinganiso somthwalo oguqukayo (kuye ngokuthi yini; izikhathi ezintathu zensimbi yekhabhoni kanye nezikhathi ezi-5 zensimbi ye-alloy).

Ukulungiswa kwezimo zokusebenza ezikhethekile: Uma iketanga lisebenza ekushiseni okungaphezu kuka-120°C, noma uma kukhona ukugqwala (njengasendaweni yamakhemikhali), noma uma kukhona ukuguguleka kothuli, umthamo womthwalo olinganiselwe kumele wehliswe. Ngokuvamile, umthamo womthwalo wehliswa ngo-10%-15% kukho konke ukwanda kokushisa okungu-100°C; ezindaweni ezigqwalisayo, ukwehla kungu-20%-30%.

Isinyathelo 2: Bala Umthwalo Wokusebenza Wangempela (F_w)
Umthwalo wangempela wokusebenza uwuguquguquko oluyinhloko ekubalweni kwezinto zokuphepha futhi kufanele ubalwe ngokuphelele ngokusekelwe ohlotsheni lwemishini kanye nezimo zokusebenza. Gwema ukusebenzisa "umthwalo wethiyori" esikhundleni salokho. Nquma umthwalo wesisekelo (F₀): Bala umthwalo wethiyori ngokusekelwe ekusetshenzisweni okuhlosiwe kwemishini. Isibonelo, umthwalo wesisekelo weketanga lokuhambisa = isisindo sezinto + isisindo seketanga + isisindo sebhande lokuhambisa (konke kubalwa ngemitha); umthwalo wesisekelo weketanga lokushayela = amandla emoto × 9550 / (isivinini se-sprocket × ukusebenza kahle kokudlulisa).
I-Superimposed Load Factor (K): Lesi sici sicabangela imithwalo eyengeziwe ngesikhathi sokusebenza kwangempela. Ifomula yi-F_w = F₀ × K, lapho i-K iyi-combined load factor futhi kufanele ikhethwe ngokusekelwe ezimweni zokusebenza:
I-Starting Shock Factor (K₁): 1.2-1.5 yemishini yokuqalisa okuthambile kanye no-1.5-2.5 yemishini yokuqalisa ngqo.
I-Overload Factor (K₂): 1.0-1.2 yokusebenza okuzinzile okuqhubekayo kanye no-1.2-1.8 wokulayisha ngokweqile ngezikhathi ezithile (isb., i-crusher).
Isici Sesimo Sokusebenza (K₃): 1.0 ezindaweni ezihlanzekile nezomile, 1.1-1.3 ezindaweni ezinomswakama nezinothuli, kanye no-1.3-1.5 ezindaweni ezigqwalisayo.
Isici Somthwalo Ohlanganisiwe K = K₁ × K₂ × K₃. Isibonelo, ngebhande lokuhambisa eliqala ngqo, K = 2.0 (K₁) × 1.5 (K₂) × 1.2 (K₃) = 3.6.