ʻO ke kumu helu helu kaulahao

ʻO ke ʻano helu helu haʻahaʻa kaulahao e like me kēia: Lifting kaulahao mika kaumaha helu helu?Pane: ʻO ka helu kumu ka helu o nā ʻāpana = ka lōʻihi holoʻokoʻa (mm) ÷ 14. 8 mm = 600 ÷ 14. 8 = 40. 5 (mau ʻāpana) Ke kaumaha o kēlā me kēia māhele = He aha ke ʻano helu helu no ka ikaika tensile o ka pōʻai. kaulahao kila?Ka ikaika uhai kaulahao Ka helu ana i ka ikaika nahaha o ke kaulahao wili papa 1. O ka ha'iha'i ha'iha'i o ke kila 40Cr he S=980N/mm2, ka li'ili'i loa o ke kea o ka loulou kaulahao hookahi ma B units (mm2), a me ka ʻO ka ikaika haʻihaʻi liʻiliʻi o ke kaulahao aia i nā ʻāpana F (N).Huina F=S×B3.Ka helu ʻana o kahi kaulahao me ka mānoanoa 10 a me ka pitch 80: B=15*10*2+12.5*10*2=550mm2F=980*550=539000N Ka helu ʻana o ke kaulahao me ka mānoanoa 16 a me ka pitch 80: B=15*16*2+12 .5*16*2=880mm2F=980*880=862400N Ka helu ʻana o ke kaulahao me ka mānoanoa 16 a me ka pitch 120: B=23.5*16*2+22.5*16*2=1472mm2F=980*1472=1442560N