He aha te rerekētanga i waenga i ngā mekameka roera Raupapa A me Raupapa B?
He mea nui ngā mekameka roera i roto i ngā pūnaha tuku ahumahi hou, ā, e whakamahia whānuitia ana i roto i ngā taputapu miihini. I runga i ngā paerewa me ngā horopaki tono rerekē,mekameka roeraka wehea te nuinga ki te Raupapa A me te Raupapa B.
I. Ngā Paerewa me ngā Pūtake
Raupapa A: E rite ana ki te American Standard for Chains (ANSI), te paerewa matua i te mākete o Amerika, ā, e whakamahia whānuitia ana i Amerika Te Raki.
Raupapa B: E rite ana ki te Paerewa Pākehā mō ngā Mekameka (ISO), e ahu mai ana i te UK, ā, e whakamahia whānuitia ana i Ūropi me ētahi atu rohe.
II. Ngā Āhuatanga Hanganga
Te Matotoru o te Pereti Hononga ā-Roto, ā-Waho hoki:
Raupapa A: He ōrite te matotoru o ngā pereti hononga o roto, o waho hoki, kia tutuki ai te kaha pumau ōrite mā roto i ngā whakarerekētanga rerekē.
Raupapa B: He ōrite te matotoru o ngā pereti hononga o roto, o waho hoki, kia tutuki ai te kaha pumau ōrite mā roto i ngā nekehanga piu rerekē.
Rahi o te Wāhanga me te Ōwehenga o te Pitch:
Raupapa A: He rite ngā ine matua o ia wāhanga ki te teitei o te titi. Hei tauira, ko te whānui o te pine = (5/16)P, ko te whānui o te roera = (5/8)P, me te matotoru o te pereti mekameka = (1/8)P (ko P te teitei o te mekameka).
Raupapa B: Kāore i te tino ōrite te rahi o ngā wāhanga matua ki te teitei o te oro.
Te Hoahoa o te Pītiti:
Raupapa A: Ngā pītiti kāore he papa i ngā taha e rua.
Raupapa B: Ngā pūraka taraiwa me te pane i tetahi taha, he mea whakau ki te ara kī me ngā kōhao tīwiri.
III. Whakataurite Mahi
Kaha Kume:
Raupapa A: I roto i ngā rahi piko e waru o te 19.05 ki te 76.20 mm, he nui ake te kaha kume i tō te Raupapa B.
Raupapa B: I ngā rahi piko e rua o te 12.70 mm me te 15.875 mm, he nui ake te kaha kume i tō te Raupapa A.
Te Rerekētanga o te Roa o te Mekameka:
Raupapa A: Ko te rerekētanga roa o te mekameka he +0.13%.
Raupapa B: Ko te rerekētanga roa o te mekameka he +0.15%. Te Rohe Tautoko o te Takirua Hinge:
Raupapa A: E tuku ana i te horahanga tautoko nui rawa atu o ngā rahi papa 15.875 mm me 19.05 mm.
Raupapa B: He 20% te nui ake o te horahanga tautoko i te Raupapa A me te whānui hononga o roto ōrite.
Diameter o te Rōra:
Raupapa A: Kotahi anake te rahi o te roera o ia papa.
Raupapa B: Ko te whānui o te roera he 10%-20% te nui ake i te Raupapa A, ā, e rua ngā whānui roera e wātea ana mō ia papa.
IV. Ngā horopaki tono
He Raupapa:
Ngā Āhuatanga: He pai mō ngā pūnaha tuku tere-waenga me te tere-iti.
Ngā Whakamahinga: E whakamahia whānuitia ana i roto i ngā mīhini hanga, ngā mīhini ahuwhenua, te hanga motuka, te whakarewa, ngā matū hinu, me ētahi atu ahumahi.
Raupapa B:
Ngā Āhuatanga: He pai mō te nekehanga tere-nui, te tuku tonu, me ngā kawenga taumaha.
Ngā Whakamahinga: E whakamahia ana i roto i ngā mīhini ahumahi, ngā mīhini whakarewa, ngā mīhini kakahu, me ētahi atu whakamahinga.
V. Te Tiaki me te Tiaki
He Raupapa:
Te pēhanga: Te hekenga o te pēhanga = 1.5%a. Mā te neke atu i te 2% ka piki ake te mōrearea o te pekepeke niho mā te 80%.
Whakahinuhinu: He pai mō ngā taiao pāmahana teitei, whakamahia te hinu karāpeti.
Raupapa B:
Te pēhanga: Te hekenga o te pēhanga = 1.5%a. Mā te neke atu i te 2% ka piki ake te mōrearea o te pekepeke niho mā te 80%.
Whakahinuhinu: He pai mō ngā taiao waikura rehu tote, whakamahia ngā pereti mekameka kua pania ki te Dacromet me te whakahinuhinu i ia toru marama.
VI. Ngā Taunakitanga Kōwhiringa
Kōwhiria i runga i te horopaki tono: Mena me whakahaere tō taputapu i raro i ngā kawenga reo me ngā tere iti, he pai ake te Raupapa A; ki te hiahia he tere teitei, he tuku tonu, he kawenga taumaha, he pai ake te Raupapa B.
Whakaarohia ngā utu tiaki: He rerekē ētahi o ngā mahi tiaki i waenga i te Raupapa A me te Raupapa B. I te wā e whiriwhiri ana, whakaarohia te taiao whakahaere o te taputapu me ngā rauemi tiaki.
Kia rite te hototahi: I te wā e whiriwhiri ana i tētahi mekameka, kia rite te teitei o te mekameka me te pīkau hei karo i ngā raruraru tuku.
Wā tuku: Akuhata-08-2025