Test and Analysis of Vibration Reduction Characteristics of Chassis Suspension of Highland Clearance Self-Propelled Sprayer

【Objective】 To improve the operating stability of the self-propelled sprayer by studying the vibration reduction characteristics of the chassis suspension of the self-propelled sprayer with high clearance. 【Methods】 Vibration acceleration of the sprayer on different pavement was collected by using vibration acceleration sensor to analyze the vibration acceleration of the frame and motor bracket, and evaluate the vibration reduction characteristics of the gas-hydraulic combination suspension damping properties. 【Results】 When the sprayer in the speed was 3 km/h, 5 km/h, 8 km/h in the field, the road excitation after the combination of gas and liquid suspension damping, the vibration acceleration RMS value was reduced by 70.43%, 68.49% and 66.10%, respectively, and when the sprayer in the speed was 3 km/h, 5 km/h, 8 km/h in the field, the root mean square value of vibration acceleration transmitted to the vehicle frame by road excitation was reduced by 69.61%, 67.32% and 64.74%, respectively. 【Conclusion】 With the increase of the operating speed and road level of the sprayer, the gas-liquid combined suspension can ensure good vibration reduction effect.