The work aims to propose an automatic hydraulic overturning platform with single degree of freedom to compre-hensively analyze its mechanical characteristics,and verify whether it is suitable for the reversing process of solid rocket motor in vibration tests.According to the hydraulic design theory,the mathematical relationship between the telescopic displacement of the hydraulic cylinder and the overturning angle was derived.Through the statics analysis of the overturning frame,the ulti-mate stress position of the overturning platform was determined,and the specific relationship between the stress and the over-turning angle was analyzed.A static stress analysis was carried out to verify the stability of the overturning frame and the frame combination at the ultimate stress position.When the overturning frame was in the initial horizontal position,the hydraulic cyl-inder bore the maximum pressure,and when the overturning angle was 90°,the axial force of the hydraulic cylinder under ten-sion appeared the maximum value.The stress distribution of the overturning frame was uneven,with the maximum stress ap-pearing in the middle,which was much smaller than the allowable stress,and the strength met the application requirements.The mechanical performance of the overturning platform meets the design and usage requirements.In addition,based on the com-bined evaluation method of static force analysis on its extreme positions and analysis on the process of its motion,the mechani-cal performance of shaft supported overturning mechanical equipment can be reasonably determined.
solid propellant rocket engineoverturning platformstatic analysisfinite element analysisvibration testhydrau-lic control
NETL
NSTL
维普
万方数据
