Ndeapi Magiredhi ESimbi Structure Bolts

Simbi chimiro bhoti mukushandiswa ichave yakasiyana maererano nesimba rekushandiswa kwakasiyana kwenzvimbo kwakasiyanawo, saka sei kutonga giredhi resimba?

Simbi chimiro mabhoti giredhi resimba:

Iyo simba giredhi resimbi chimiro bhoti yesimbi chimiro chekubatanidza ndeye 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Iyo giredhi resimba resimbi chimiro bhoti rine zvikamu zviviri zvenhamba, iyo inomiririra iyo nominal tensile simba kukosha uye flexion ratio yesimbi chimiro bolt zvinhu.

Semuenzaniso, mabhaudhi esimbi egiredhi 4.6. Zvinoreva ndezvekuti:

1, simbi chimiro bhaudhi zvinhu zita goho simba re400 × 0.6 = 240MPa giredhi rekuita giredhi 10.9 yakakwirira simba simbi chimiro bhaudhi.

2. The compressive simba reshiyo yesimbi chimiro bolt zvinhu 0.6;

3, simbi chimiro bhaudhi zvinhu nominal tensile simba kusvika 400MPa;

Mushure mekurapa kwekupisa, zvinhu zvinogona kubudirira:

1, simbi chimiro bhaudhi zvinhu zita simba goho re 1000 × 0.9 = 900MPa giredhi

2. Chiyero chekusimbisa simba resimbi chimiro bhoti ndeye 0.9;

3, simbi dhizaini bhaudhi zvinhu nominal tensile simba re1000MPa;

Chirevo chesimbi chimiro bhoti intensity giredhi ndiyo yepasirese mwero, iyo simbi dhizaini bhaudhi yegiredhi rimwechete rekuita, zvisinei nechinhu chayo uye musiyano wenzvimbo yekugadzira, kuita kwayo kwakafanana, sarudza giredhi rekuita chete pane dhizaini rega.

Iwo magiredhi esimba 8.8 uye 10.9 anoreva shear stress mamakisi emabhaudhi esimbi 8.8GPa uye 10.9 GPa.

8.8 Nominal tensile simba 800N/MM2 Nominal goho simba 640N/MM2

General simbi chimiro bhaudhi inoratidzwa ne "XY", X * 100 = kusimba kwesimba resimbi chimiro bhaudhi, X * 100 * (Y / 10) = simba rekuburitsa resimbi chimiro bhaudhi (sezviri kutaurwa mune iyo label: goho simba / kusimba simba = Y / 10), yakadai se4.8, simba rekusimba resimbi yekugadzirwa kwesimbi ndeye: 400MPa, goho simba: 400 * 8/10 = 320MPa.

Iri pamusoro ndiro giredhi resimba resimbi yekugadzira bhaudhi, isu tiri kushandiswa zvinoenderana negiredhi rakasiyana rekushandisa, muchivako chinoshandiswa chinowanzo yakakwirira simba giredhi bhaudhi.