| Heilongjiang province is one of the main food production bases in China. It often occurs drought in different degree in spring and summer, especially the western area of daqing, Qiqihar and songnen plain region of southwest. Drought has serious restriction throughout the sustainable development of agriculture in Heilongjiang province. There are lot of slope in the east and west in Heilongjiang province. Rainfall forces on from June to September which makes runoff. Soil erosion restricts the sustainable development of agriculture in Heilongjiang province is another important factors. So, taking the reasonable cultivation method and using the farming tools is imperative.For solving this problem we introduce a new cultivating method– cultivator, ditching and ridging. Precipitation has been used effectively through saving rainfall and reducing surface runoff. A new machine has been designed for this cultivating method. This subject researched mainly from following several aspects:1,Firstly, design of intertillage weeding furrowing and furrow diking machine has been done, which include frame, driven system, controlling system, intertillage part, and limits the deep cellular. Mathematical modeling has been used with MATLAB for transmission systems design, which broken down the traditional design method. First link mechanism model is made. Then the tracking formulations are cauculated. Finally each length of links are calculated according to iteration of tracking. To optimize the driven system through 3D modeling and kinematics simulation based on CATIA. Machine is controlling by relay, which has low price and reliable work. The machine combines electricity and liquid. Finally, the calculating of lifting capacity was done.2,In order to meet the requirement of agronomic, Experimental study of working effect has been done. The depth of ditching, the width of shovel plate and the speed of tractors are chose as factors. The struction of ditching and ridge are chose as target. The orthogonal experiment, extreme difference analysis and variance analysis are used to makes data processing.: the work results is more better when the depth of ditching is 100mm, the width of shovel plate is 350mm and the speed of tractors is 3.0km/h.3,Experimental study of cultivation resistance was done and the conclusion is following: (1)To the work component: when the speeds are in the range of 2.5 to 3km/h, the cultivation resistance increases with the speed increasing. When the speeds are in the range of 3.0 to 3.5km/h, the cultivation resistance decreases with the speed increasing.Cultivation resistance is 313.03N which is the largest when the speed is 3km/h.Cultivation resistance is 214.0N which is the least when the speed is 3.5km/h.(2) To the machine: when the speeds are in the range of 2.5 to 3.5km/h, the cultivation resistance decreases with the speed increasing. Cultivation resistance is 9962.9N which is the largest when the speed is 2.5km/h.Cultivation resistance is 6872.9N which is the least when the speed is 3.5km/h.4,Computer-aided analysis to the key component has been done. The three dimensional finite element analyses with the ANSYS software to the key component and frame have been done according to the force characteristic. |
