Authors

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.

Abstract in Chinese

作为对农作物进行喷药、施肥等作业的重要植保机械，高地隙自走式喷雾机对促进粮食安全生产和农业稳定发展具有非常重要的意义。本文针对大型高地隙自走式喷雾机复杂的运行工况和独特的作业要求，分析确定喷雾机悬架的弹性元件、导向装置、缓冲装置、阻尼元件等主要部件，设计了适用于高地隙喷雾机的独立式立轴空气悬架系统结构方案。分析喷雾机底盘在侧滑、紧急制动、不平路面行驶等不同极限工况下的受力情况，并对立轴进行了详细设计与校核。基于喷雾机底盘受力情况分析结果，应用有限元分析软件HyperMesh 10.0，对悬架关键零部件立轴、马达保护壳体、转向臂、弹簧顶部支撑等进行了静力学分析。根据受力分析与有限元分析结果，结合工艺生产要求，对设计方案中的悬架结构形式进行改进，得到最终的悬架形式和喷雾机整机结构方案。通过本文研究，为大型高地隙自走式喷雾机设计与研发提供基础。