Crankshaft jẹ ọkan ninu awọn ẹya pataki ninu ẹrọ ijona inu, jẹ ọpa ẹhin ti ẹrọ naa, jẹ apakan bọtini lati ru ẹru ipa ati gbigbe agbara.
Awọn crankshaft wa ni o kun kq ti awọn iwaju opin ti awọn crankshaft, awọn ifilelẹ ti awọn ọpa ọrun, awọn asopọ opa akosile, awọn crank, awọn iwontunwonsi Àkọsílẹ, awọn pada opin ti awọn crankshaft, bbl Awọn oniwe-akọkọ iṣẹ ni lati se iyipada awọn gaasi titẹ zqwq nipa pisitini asopọ ọpá ẹgbẹ sinu ita o wu iyipo, ati ki o le wakọ awọn àtọwọdá siseto ti abẹnu ijona engine ati awọn orisirisi awọn ẹya ẹrọ miiran. Ayika iṣẹ ati aapọn ti crankshaft jẹ eka pupọ, ati pe o wa labẹ ipa ipapọ ti awọn iyipada igbakọọkan ninu titẹ gaasi, agbara centrifugal ati agbara inertial lakoko iṣẹ. Nitorinaa, ninu sisẹ ati iṣelọpọ, deede iwọn, deede ipo ati aibikita dada ti apakan kọọkan ti crankshaft ni awọn ibeere ti o ga julọ.
Awọn crankshaft ti wa ni gbogbo simẹnti lati alabọde erogba, irin, alabọde carbon alloy, irin tabi ductile iron
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