DESIGN AND ANALYSIS OF INDEPENDENT STRUT TYPE AIR SUSPENSION APPLIED TO HIGH CLEARANCE SELF-PROPELLED SPRAYER

Abstract

As an important plant protection machinery for spraying and fertilizing crops, high clearance self-propelled sprayer is of great significance to promote food security production and stable development of agriculture. Aiming at the complex operating conditions and unique operating requirements of large high clearance self-propelled sprayer, this paper analyzes and determines the main components of the sprayer suspension, such as elastic components, guiding devices, buffer devices, damping components, etc., and designs a stand-alone vertical shaft air suspension system structure suitable for high clearance sprayers. The stress of the sprayer chassis under different extreme conditions such as side slip, emergency braking and uneven road driving is analyzed, and the vertical shaft is designed and checked in detail. Based on the stress analysis results of the sprayer chassis, the finite element analysis software HyperMesh 10.0 was used to analyze the statics of the key components of the suspension, such as the vertical shaft, the motor protection shell, the steering arm, and the spring top support. According to the results of force analysis and finite element analysis, combined with the requirements of process production, the suspension structure in the design scheme is improved, and the final suspension form and the whole structure scheme of the sprayer are obtained. Through this study, it provides a basis for the design and development of large high clearance self-propelled sprayer.