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| Mechanic Property of Automatic Overturning Platform with Single Degree of Freedom |
| Received:June 24, 2023 Revised:November 20, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2024.01.006 |
| KeyWord:solid propellant rocket engine overturning platform static analysis finite element analysis vibration test hydraulic control |
| Author | Institution |
| LIU Xiaochen |
Shanghai Space Propulsion Technology Research Institute, Zhejiang Huzhou , China |
| WANG Fei |
Shanghai Space Propulsion Technology Research Institute, Zhejiang Huzhou , China |
| CUI Wei |
Shanghai Space Propulsion Technology Research Institute, Zhejiang Huzhou , China |
| WU Jiajia |
Shanghai Space Propulsion Technology Research Institute, Zhejiang Huzhou , China |
| QIAN Ming |
Shanghai Space Propulsion Technology Research Institute, Zhejiang Huzhou , China |
| MAO Kankang |
Shanghai Space Propulsion Technology Research Institute, Zhejiang Huzhou , China |
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| Abstract: |
| The work aims to propose an automatic hydraulic overturning platform with single degree of freedom to comprehensively 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 ultimate stress position of the overturning platform was determined, and the specific relationship between the stress and the overturning 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 cylinder bore the maximum pressure, and when the overturning angle was 90°, the axial force of the hydraulic cylinder under tension appeared the maximum value. The stress distribution of the overturning frame was uneven, with the maximum stress appearing 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 combined evaluation method of static force analysis on its extreme positions and analysis on the process of its motion, the mechanical performance of shaft supported overturning mechanical equipment can be reasonably determined. |
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