| Vibration analysis and improvement for frame of 4JH-270 cotton rod crushing and returning machine |
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| DOI：10.7606/j.issn.1000-7601.2021.06.30 |
| Key Words: cotton stalk crushing and returning machine frame vibration analysis frame structure improvement modal analysis |
| Author Name | Affiliation | | LI Bin | Machinery Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi, Xinjiang 832001, China | | NIU Guoliang | College of Mechanical and Electrical Engineering,Shihezi University, Shihezi, Xinjiang 832000, China | | LIU Yang | Machinery Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi, Xinjiang 832001, China | | SUN Xiaoxiao | College of Mechanical and Electrical Engineering,Shihezi University, Shihezi, Xinjiang 832000, China | | DONG Yuncheng | Machinery Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi, Xinjiang 832001, China | | WANG Shiguo | Machinery Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi, Xinjiang 832001, China | | WANG Tao | Machinery Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi, Xinjiang 832001, China |
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| Abstract: |
| To solve resonance problems with the frame of 4JH-270 cotton stalk crushing and returning machine during its operation, the finite element model of the frame was established by SolidWorks.ANSYS modal analysis software was used to calculate the finite element mode shape and frequency of the frame and perform modal test analysis to verify the accuracy of the finite element mode. By analyzing the natural frequency of rack and external excitation frequency, the structure of the rack was optimized. When adding two support frames, two steel plates, a square steel and a counterweight plate to the frame, the thickness of each beam was reduced by 1 mm, and the thickness of the remaining beams was increased by 1mm.The first 4 modal frequencies of the frame avoided the external excitation frequency range. A static analysis of the optimized frame showed that the maximum stress was 77.295 MPa, which was far less than the yield strength of the material, verifying the stability of the frame. This research has provided a design test basis for reducing the vibration of the same type of straw crushing and returning machine. |
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