Maitiro Ekuziva Roller Chain Safety Factor

Maitiro Ekuziva Roller Chain Safety Factor

Mumaindasitiri ekutumira zvinhu, chinhu chekuchengetedza chemuchina we "roller chain" chinotarisa zvakananga kugadzikana kwekushanda kwemuchina, hupenyu hwebasa, uye kuchengetedzeka kwemushandisi. Ingave kutumirwa kwakasimba mumichina yekuchera kana kuendesa zvinhu nemazvo mumitsetse yekugadzira otomatiki, zvinhu zvekuchengetedza zvisina kurongwa zvakanaka zvinogona kukonzera kutyoka kwecheni nguva isati yakwana, nguva yekushanda kwemuchina, uye kunyange tsaona. Chinyorwa chino chichatsanangura zvakarongeka maitiro ekuona chinhu chekuchengetedza chemuchina we "roller chain", kubva papfungwa huru, matanho akakosha, zvinhu zvinopesvedzera, kusvika kunhungamiro dzinoshanda, kubatsira mainjiniya, vatengi, uye vanochengetedza michina kuita sarudzo dzakarurama.

I. Kunzwisisa Kwekutanga kweSafety Factor: Nei Iri "Lifeline" yeRoller Chain Sarudzo

Chinhu chekuchengetedza (SF) chiyero chekukwanisa kwecheni inotenderera kutakura mutoro kune mutoro wayo chaiwo wekushanda. Chaizvoizvo, inopa "muganhu wekuchengetedza" wekushanda kwecheni. Haingodziviriri kusava nechokwadi kwakadai sekuchinja-chinja kwemutoro uye kupindira kwezvakatipoteredza, asi inovharawo njodzi dzinogona kuitika dzakadai sezvikanganiso zvekugadzira cheni uye kutsauka kwekuisa. Ichi chiratidzo chikuru chekuenzanisa kuchengetedzeka nemutengo.

1.1 Tsanangudzo Yepfungwa yeSafety Factor
Fomura yekuverenga chinhu chekuchengetedza ndeiyi: Chinhu Chekuchengetedza (SF) = Kugona Kutakura Roller Chain Rated (Fₙ) / Mutoro Wekushanda Chaiwo (F_w).
Kukwanisa kurema kwakayerwa (Fₙ): Zvinosarudzwa nemugadziri wecheni zvichibva pane zvinhu, chimiro (senge pitch ne roller diameter), uye maitiro ekugadzira, zvinowanzo sanganisira dynamic load rating (mutoro unoenderana nehupenyu hwekuneta) uye static load rating (mutoro unoenderana nekupwanyika kwepakarepo). Izvi zvinogona kuwanikwa mumakatalogi ezvigadzirwa kana mumazinga akadai seGB/T 1243 neISO 606.
Mutoro Wekushanda Chaiwo (F_w): Mutoro wepamusoro unogona kutsungirira cheni pakushanda chaiko. Izvi zvinotarisa zvinhu zvakaita sekuvhunduka kwekutanga, kuwandisa, uye kuchinja kwemamiriro ekushanda, pane kungova mutoro wakaverengerwa nedzidziso.

1.2 Mitemo yeMaindasitiri yeZvinhu Zvinobvumidzwa zveKuchengetedza
Zvinodiwa nezvinhu zvekuchengetedza zvinosiyana zvakanyanya mumamiriro akasiyana ekushandiswa. Kutaura zvakananga nezve "chinhu chekuchengetedza chinobvumidzwa" chakatsanangurwa nemitemo yeindasitiri kana mitemo yeindasitiri kwakakosha kudzivirira zvikanganiso zvekusarudza. Zvinotevera ireferensi yezvinhu zvekuchengetedza zvinobvumidzwa zvemamiriro ekushanda akajairika (zvichibva paGB/T 18150 uye maitiro eindasitiri):

II. Maitiro eCore-Step 4 ekuona Zvinhu zvekuchengetedza Roller Chain

Kuziva chinhu chekuchengetedza hakusi nyore kushandisa fomura; zvinoda kupatsanurwa nhanho nhanho zvichienderana nemamiriro chaiwo ekushanda kuti pave nechokwadi chekuti data remutoro rakarurama uye rakavimbika padanho rega rega. Maitiro anotevera anoshanda kune akawanda mashandisirwo e roller chain eindasitiri.

Danho 1: Sarudza huwandu hwemutoro wecheni inotenderera (Fₙ).
Isa pakutanga kuwana data kubva kucatalogue yezvigadzirwa zvemugadziri. Tarisa "dynamic load rating" (kazhinji inoenderana nemaawa chiuru ehupenyu hwekuneta) uye "static load rating" (inoenderana nestatic tensile fracture) yakanyorwa pacatalogue. Izvi zviviri zvinofanirwa kushandiswa zvakasiyana (dynamic load rating ye dynamic load conditions, static load rating ye static load kana low-speed conditions).
Kana data remuenzaniso risipo, kuverenga kunogona kuitwa zvichienderana nemazinga enyika. Tichitora GB/T 1243 semuenzaniso, chiyero chemutoro weroller chain (F₁) chinogona kufungidzirwa uchishandisa fomura iyi: F₁ = 270 × (d₁)¹.⁸ (d₁ ndiyo dhayamita yepini, mu mm). Chiyero chemutoro usingachinji (F₂) chinokwana ka3-5 pane chiyero chemutoro wedhiyabhorosi (zvichienderana nechinhu chacho; ka3 kune simbi yekabhoni uye ka5 kune simbi yealloy).

Kugadziriswa kwemamiriro ekushanda akakosha: Kana cheni ichishanda mukupisa kwekunze kunopfuura 120°C, kana kuti ngura (senge munzvimbo ine makemikari), kana kuti guruva riripo, mutoro wepamusoro unofanirwa kuderedzwa. Kazhinji, mutoro wepamusoro unoderedzwa ne10%-15% pakuwedzera kwe100°C kwekupisa; munzvimbo dzine ngura, kuderedzwa kwe20%-30%.

Danho rechipiri: Verenga Mutoro Webasa Chaiwo (F_w)
Mutoro chaiwo wekushanda ndiwo musiyano mukuru mukuverengwa kwezvinhu zvekuchengetedza uye unofanirwa kuverengerwa zvizere zvichienderana nerudzi rwemuchina nemamiriro ekushanda. Dzivisa kushandisa "mutoro wedzidziso" sechinotsiva. Sarudza mutoro wenheyo (F₀): Verenga mutoro wedzidziso zvichibva pakushandiswa kwemuchina. Semuenzaniso, mutoro wenheyo wecheni yekufambisa = huremu hwezvinhu + huremu hwecheni + huremu hwebhandi rekufambisa (zvese zvinoverengerwa pamita); mutoro wenheyo wecheni yekufambisa = simba remota × 9550 / (sprocket speed × efficiency yekutumira).
Chinhu Chinorema Chinorema (K): Chinhu ichi chinotora mitoro yakawedzerwa panguva yekushanda chaiko. Fomura yacho ndeye F_w = F₀ × K, apo K ndiyo chinhu chinorema chakabatanidzwa uye chinofanira kusarudzwa zvichienderana nemamiriro ekushanda:
Kutanga Kuvhunduka (K₁): 1.2-1.5 yemidziyo inotanga zvinyoro nyoro uye 1.5-2.5 yemidziyo inotanga zvakananga.
Chinhu Chinorema Kupfuura Mwero (K₂): 1.0-1.2 yekushanda kwakasimba nguva dzose uye 1.2-1.8 yekuwedzera simba panguva nenguva (semuenzaniso, crusher).
Chinonyanya Kushandiswa (K₃): 1.0 yenzvimbo dzakachena uye dzakaoma, 1.1-1.3 yenzvimbo dzine hunyoro uye guruva, uye 1.3-1.5 yenzvimbo dzine ngura.
Chinhu Chinorema Chakabatanidzwa K = K₁ × K₂ × K₃. Semuenzaniso, kune bhandi rekutakura zvinhu rinotanga zvakananga, K = 2.0 (K₁) × 1.5 (K₂) × 1.2 (K₃) = 3.6.