Abstract: Aiming at the problems that the 15°~25°slope economic crop planting park in hilly and mountainous areas of Guangxi is characterized by large slope, scattered plots, lack of tractor roads, and the existing mechanized mowing machines are difficult to enter the operation, a remotecontrol tracked mower is developed in combination with the agronomic technology of cover cropping in the planting park. According to the working condition requirements of the lawn mower in the working environment of the park, the calculation, analysis and design of the whole machine and key components such as tracked walking system, cutting system, variable mowing height adjustment system, etc. are carried out. The performance test of the mower is carried out. The experimental results show that the mower has sufficient power. The maximum longitudinal climbing angle is 36°, and the maximum oblique climbing angle is 41°. Under the action of the rangeextender system, the comprehensive working time is extended from 1.5 h to 1.8 h. The minimum turning radius is 500 mm. The remote control performance of the mower is tested through the straightline walking test and the maximum deviation angle is not more than 3° on the test ground. Through the bench test, the longitudinal tipping stability angle is 48.9°, and the lateral tipping stability angle is 64.4. A mowing experiment was carried out in a mechanized tea garden demonstration area in Guangxi. The average mowing rate was 95%. It can realize the walking, braking, steering and height adjustment of the mower through remote control, so as to meet the working requirements of the hillside plantation.

Key words: hills and mountains, tracked mower, cover cropping, performance test

摘要： 针对广西丘陵山地15°~25°坡地的经济作物种植园区坡度较大、地块分散、缺少机耕道，现有机械化割草机具难以进入并进行作业的难题，结合种植园区生草栽培的农艺技术，研发一种可遥控的履带割草机。根据园区作业环境的割草机工况要求，对整机及关键部件如履带行走系统、切割系统、变割草高度调节系统等进行计算分析与设计；设计并进行整机性能试验，实验结果表明，该割草机动力充足，最大纵向爬坡角度为36°，最大斜向爬坡角度为41°，在增程系统作用下，综合工况下作业时间由1.5 h延长至1.8 h；最小转弯半径为403.5 mm；对割草机的遥控操作性能做直线行走试验，测试路段试验最大偏驶角度不大于3°；倾翻试验台架测试纵向倾翻稳定角为48.9°，横向倾翻稳定角为64.4°；在广西某机械化茶园示范区进行割草试验，平均割草率为95%；可通过遥控实现割草机的行走、制动、转向和割草刀具高度调节，满足丘陵山地作物园区作业需求。

关键词: 履带割草机, 丘陵山地, 生草栽培, 性能试验