To enhance the stability and strength of the lower beam itself, combined with the characteristics of the body structure design, the opening structure of the lower beam assembly needs to be changed to a closed section structure, ie, a radiator lower beam reinforcement plate structure is added at the bottom of the lower beam, so that the lower beam assembly Form a closed section. At the same time, because the radiator lower beam assembly and the left and right column connection point strength is weak, only rely on the left and right 3 bolts to connect, it is difficult to ensure the stability of the radiator frame quadrilateral, the radiator frame is likely to cause diamonds when the fan is running at high speed For agitation, a connecting plate structure needs to be added to the lower crossbeam of the radiator and the inner side of the left and right columns to ensure the reliability of the lower frame. The response curve of the upper left mounting point of the water tank did not greatly improve before and after the improvement of the radiator frame structure, and the change trend was basically the same before and after the improvement, which may be related to the fact that the radiator frame structure did not improve the upper beam structure. After the structure of the lower beam of the radiator frame is improved, the dynamic stiffness performance of the lower left mounting point of the water tank in the X and Z directions is greatly improved, the vibration frequency is excessively gentle, and the peak frequency of the local part is effectively avoided, but Y The dynamic stiffness performance in the direction did not change substantially before and after the improvement of the radiator frame structure. This indicates that the improved position, location, and direction of the radiator frame structure are closely related to the dynamic stiffness properties of the final X, Y, and Z directions. In this paper, because only the lower beam structure of the radiator frame is improved, the opening structure is changed to a closed cross-section structure, and at the same time, a connecting plate is added to the radiator lower beam and the inner side of the left and right columns, respectively, and the upper beam is not improved. Therefore, the simulation analysis results only show that the dynamic stiffness performance of the lower mounting point has changed. Elastic Bandage,High Absorbency Gauze Bandage,Low Lint Gauze Bandage,Non-Sterile Elastic Bandage Shaoxing Lifecare International Trading Co., Ltd , https://www.sx-lifecare.com