作　　者： ; ; ; ;

机构地区： 华南农业大学工程学院

出　　处： 《农业工程学报》 2014年第7期18-24,共7页

摘　　要： 为解决山地果园果品和农资运送强度大、效率低以及果品易损伤的实际生产问题,设计了一种果园钢索牵引悬挂式货运系统。基于双向运送、爬坡转弯和滑车防脱轨等技术要求,进行了货运系统关键部件的结构设计。建立了复杂工况下的钢索拉力数学模型,单因素试验得到的回归方程与数学模型的系数项接近,表明拉力模型能真实反映钢索拉力状况。该文研究结果可为钢索牵引悬挂式货运系统的动力选型与结构参数匹配提供参考。 The majority of domestic orchards have poor site conditions. It is difficult for the traditional wheeled or crawler transport machinery to carry out operations in hilly orchards. The cargo transportation is mainly done by manpower, which is labor-intensive, has low efficiency, easy damage of the fruit and high cost. In order to solve these problems in hilly orchards, a cable-driven hanging transportation system for orchards was designed. Based on the technical requirements of two-way traction, turning during climbing and derailment prevention, the structure of the key parts of the system was designed. This mainly included the cable hoist, a pulley-hook group, a cable frame, a double rail, supporting and turning mechanism, a tension mechanism and a limit switch. The stability and security of this system has been tested through measuring the braking distance after the head pulley group collided with the limit switch installed on the supporting pipe. The results indicate that the braking distance is unrelated to the load weight. The mathematical model of the rope tension under the complicated condition is proposed, along with considering the climbing angle, number of supporting and turning mechanisms, turning angle, load weight, initial tension and friction coefficients. The experiments were conducted on the system built at South China Agricultural University. The mathematical model for the cable tension of the experimental system is F=11.4m＋587. By detecting the force on the guiding mechanism and the turning angle with sensors, the tension force will be obtained. The linear regression equation calculated from the experimental data is F=11.95m＋554. The coefficients of the regression equation obtained from the single-factor experiment are close to those of the mathematical model, which illustrates that the proposed model can reflect the variations of the rope tension. The results of this paper can provide a reference for the power selection and the structure parameter matching of the system. The 7YGQX-5.5 type ca

关 键 词： 设计 钢索牵引 运送系统 悬挂 果园

领　　域： [农业科学] [农业科学] [矿业工程]