1results about How to "Achieve vibration isolation performance" patented technology

The application discloses a kind of freight train K6 type bogie fixed-frequency secondary suspension structure and design method, it is related to the technical field of rail transit, it solves the problem that traditional secondary suspension is linear spring, the adaptability of train for different load conditions is poor, cannot provide consistent vibration isolation performance under different load conditions, the left and right sides of car body are respectively provided with one bogie side frame, each bolster is installed in one bogie side frame along vertical direction, a vertical steel spring group is installed between the lower surface of bolster and bogie side frame;Bolster's front and rear ends are respectively provided with one outside transfer frame, one inclined steel spring is provided in each outside transfer frame, the application utilizes nonlinear fixed-frequency vibration isolation characteristics, can ensure that the initial vibration isolation frequency of bogie secondary suspension remains unchanged when vehicle is under different loads, to realize consistent vibration isolation performance under different load conditions.