ʻO JinQiang Mīkini: Ka helu ikaika a me ka nānā ʻana i ka ikaika tensile o nā bolts

1. Ka pae ikaika

Ka pae ikaika o ke kalakanā kī kīua hoʻoholo maʻamau e like me kā lākou mea a me ke kaʻina hana wela. Loaʻa nā helu ikaika maʻamau 4.8, 8.8, 10.9, a me 12.9. Hōʻike kēia mau māka i ka tensile, shear a me ka luhi o nā bolts ma lalo o nā kūlana like ʻole.

Papa 4.8: ʻO kēia kahi pahu ikaika haʻahaʻa, kūpono no kekahi mau manawa me nā koi ikaika haʻahaʻa.
Papa 8.8: ʻO kēia kahi papa ikaika o ka bolt maʻamau, kūpono no ka haʻawe kaumaha maʻamau a me nā manawa hana kiʻekiʻe.
Papa 10.9 a me 12.9: Hoʻohana pinepine ʻia kēia mau kīʻaha ikaika ʻelua i nā kūlana e koi ʻia ai ka ikaika a me ka lōʻihi, e like me nā kaʻa nui, nā kaʻa ʻenekinia, etc.

2. Ka ikaika tensile

ʻO ka ikaika tensile e pili ana i ke koʻikoʻi kiʻekiʻe loa e hiki ai i ka bolt ke pale i ka haki ʻana i ka wā i hoʻokau ʻia i nā ikaika tensile. ʻO ka ikaika tensile o nā pahu huila kaʻa kaʻa e pili pono ana i kona pae ikaika.

ʻO ka ikaika tensile nominal o nā bolts maʻamau o ka papa 8.8 he 800MPa a ʻo ka ikaika o ka hoʻoulu ʻana he 640MPa (ka lākiō hua 0.8). ʻO ia ke kumu ma lalo o nā kūlana maʻamau o ka hoʻohana ʻana, hiki i ka bolt ke pale i nā koʻikoʻi tensile a hiki i 800MPa me ka ʻole o ka haki ʻana.
No nā bolts o nā māka ikaika kiʻekiʻe, e like me ka Papa 10.9 a me 12.9, ʻoi aku ka kiʻekiʻe o ka ikaika tensile. Eia nō naʻe, pono e hoʻomaopopo ʻia ʻaʻole ʻoi aku ka kiʻekiʻe o ka ikaika tensile, akā pono ke koho ʻia ka pae ikaika o ka bolt kūpono e like me ke ʻano hoʻohana kikoʻī a me nā koi.