| With the swift development of the economy in resent years, large quantities of agricultural machinery are employed to the agriculture, resulting in the soil hardness, soil erosion and the decrease in crop yields.In order to solve this problem, a great number of scholars and experts from home and abroad have proposed the subsoil tillage so as to improve the structure of soil, to break the plow pan and to reduce water loss and soil erosion, thus increasing yield level per unit area of the crop. Most of the experiments and previous studies proved that this method is appropriate. At present time, the development of subsoil equipment from abroad has been quite perfect, and it has developed a large scale and formed the standardization. Although China has achieved some achievements, but most of the functions are relatively singularity and the operating depth is unstable. It has a poor performance under different environmental conditions. In order to adapt to the current era, a rapid development era, this thesis presents the multifunctional fertilizer distributor for subsoiling cultivator. It has multiple functions, and it can be adjusted according to different needs.The equipment this thesis has designed is mainly composed of the rack, traction device, anti-blocking mechanism, self-locking device, automatic resetting device, depth stop and the novel fertilizer sowing mechanism. The multifunctional fertilizer distributor for subsoiling cultivator this article has designed can complete the four tasks of cutting stubble, deep pine / cultivating, weeding, fertilizing in a hierarchical way to achieve the goal of a variety of functions for joint operations. In conclusion, the work efficiency can be greatly improved. According to the function division of each part of the machinery, machinery can be divided into five functional modules, including blockades, subsoiling / cultivator, fertilization,self-protection, auto-reply. This can eliminate the surface crop residues and the stubble blockages, decrease tillage resistance, reduce losses and improve the efficiency of equipment. Five modules work independently and they will have a rational allocation to improve the job efficiency to meet basic requirements of the multifunctional combined operations.Through the presentation of functions of different parts and the demonstration of force analysis as well as the operating principle, the optimal solution can be obtained. Therefore, the configuration of the machines and tools among the various components can be more rationalized and practical. In this paper, the author has an ANSYS analysis on the subsoiler Shanks. It can be concluded that the maximum stress subsoiler focused on the tip of the blade is about 1180 MPa, less than its yield limit 1250 MPa and the maximum displacement is 0.008 mm. This designation meets the requirements.The multifunctional subsoiler cultivators Fertilizing designed in this thesis did the performance tests three times on the experimental field in Shihezi university. The result of preliminary test shows that multifunctional fertilizer distributor for subsoiling cultivator has a good penetration performance. Soil compactibility from there four-storey different depths was measured and compared. They were reduced by78%, 47%, 36% and 26% respectively, reaching the international requirements for subsoilers. Bymeasurement of the moisture content, we know that the average moisture content for not deep loose soil plots was 12.68%, while the soil water content for subsoiling plots was 19.56% on average, increasing6.17%.When the depth of the presetting tillage was 330 mm, the stability coefficients of the depth of subsoiling for the right-and-left subsoilers were U1 = 98.96% and U2 = 98.67%. It meet the state specification for subsoiler provisions. The disk device in the anti-blocking mechanism not only has the cutting stubble herbicidal effects, but also has the effects of reducing the traction resistance to the machines and tools. equipment. The anti-drag at work is 16% on average. |
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