Design and Development of Ductile Iron V Shape Thrust Rod of Commercial Vehicle
Aiming at the traditional manufacturing process of commercial vehicles V shape thrust rod,which has the problems of complicated processes,long production cycle and high cost.In this paper,the technical scheme of replacing steel with iron is proposed,and the as-cast QT700-6 ductile iron V-shaped thrust rod of commercial vehicle is successfully developed.The V-shape thrust rod of ductile iron adopts H-shape integral structure.Compared with the steel structure thrust rod,the V-shape thrust rod of ductile iron can effectively avoid the generation of internal stress and reduce the weight by 9％.Through finite element static analysis,it was found that the maximum stress of ductile iron V type thrust rod is lower than that of steel structure V type thrust rod under the same working conditions,which verifies the reliability of ductile iron V type thrust rod.The static bench test of the ductile iron V type thrust rod was carried out.Comparing the test results with the simulation results,it was found that there were 7 stress error values within 15％.After completing the longitudinal cyclic loading 200 000 times,the ductile iron V-type thrust rod has no failure problem and meets the requirements of fatigue bench test.
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