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近几年来 ,由手扶拖拉机变型而来的变形拖拉机 ,其爬坡能力强 ,操纵性、制动性及运输速度较原机型都有较大的改进 ,随着农村运输需求的不断增加 ,应用日益广泛。受变型拖拉机生产企业的技术及生产条件等因素的影响 ,目前这种拖拉机的综合性能还有待进一步改善。针对农村道路运输条件恶劣 ,尤其是我国南方地区 ,坡道多、道路条件差 ,研究变型拖拉机的坡道制动减速度和制动距离是十分必要的。该文建立了变型拖拉机坡道制动减速度和制动距离的数学模型 ,以富强-18Y变型拖拉机为例 ,分析了影响制动减速度和制动距离的因素 ,讨论了质心位置、附着系数和坡度角对它们的影响趋势和程度 ,为变型拖拉机的设计提供了理论依据
In recent years, the deformation of the tractor tractor variants from the tractor, its climbing ability, maneuverability, braking and transport speed than the original models have greatly improved, with the increasing demand for rural transport, Increasingly wide range of applications. Affected by factors such as the technical and production conditions of tractor manufacturers, the comprehensive performance of this tractor needs to be further improved. In view of the harsh conditions of rural road transport, especially in southern China, the ramp and poor road conditions, the study of modified tractor deceleration ramp and braking distance is necessary. In this paper, a mathematical model of braking deceleration and braking distance of tractor ramp is established. Taking Fuqiang-18Y tractor as an example, the factors influencing braking deceleration and braking distance are analyzed. The position of mass center, adhesion coefficient And slope angle of the trend and extent of their influence on the design of modified tractors provide a theoretical basis