机械式拖拉机导向探测装置

拖拉机自动导向能提高行驶轨迹的精度，提高行间作业质量，减轻驾驶员劳动强度。机械式拖拉机自动导向利用田间的作物、秸秆或垄沟等进行接触探测，机构简单、成本低、易维护。设计针对玉米秸秆行间作业的低成本机械式导向探测装置。通过对导向探测器具有的特点进行分析，确定触杆的对称结构和偏心半椭圆形状特征，在对触杆进行受力分析的基础上确定触杆形状的关键参数即偏心矩。经过试验表明这种形式的导向探测装置及角位移传感器能实现拖拉机在秸秆行间的导向探测，并对秸秆无破坏。

MECHANICAL DETECTOR FOR TRACTORS AUTOMATIC GUIDANCE

Automatic guidance systems for tractors improved track accuracy and inter-row operating performance,reduced the intension of driver.The mechanical guidance for tractors detected path by contact crops,stubbles or furrows in the field with simple structure that easy to maintain and lower cost.A low cost equipment of mechanical detector for tractors to auto- matically guide in standing maize stubbles field is presented. The symmetrical frame of the detector and half ellipse shape of the feeler are designed by analyzing characters of detector sensing in stubbles rows.The main parameter such as space between center of ellipse and that of rotation axle is provided on the base of analyzing feeler forces and rotation movement in dynamics.The result of test showed that the automatic guidance equipment with half ellipse shape of the feeler and angle sensor is capable of detecting the guidance rows of standing maize stubbles.