| Every harvest season, a lot of excess straw piled up everywhere, Xiacha crop sowing and planting, burning of straw as the farmers are the easiest and most convenient way to deal with the extra straw, but this has seriously polluted the environment. Therefore, do straw on the effective use has caused widespread concern in society. Straw contains a variety of mineral nutrients necessary for crop growth elements and organic matter composition of a complete fertilizer. Considered from the perspective of the development of circular agriculture, straw is one of great significance to the mode of operation. Supporting the combine harvester disposable straw shed the contention farming season during the field technology can effectively solve the busy, the contention of the contradictions of labor, a strong impetus to the straw full mechanization of agriculture process, to avoid environmental pollution due to burning of straw.According to the above purpose, this paper conducted the following several aspect researches:Firstly, Study of existing straw chopping methods and principles, chopped straw shredder features to determine the design of the straw grinder. Based on the needs of the straw recycling, efficient, energy-saving goals research and design a matching combine harvester straw shredder.Secondly, the slip shear kinematics simulation, grinder model straw model. The straw model rigid beam method and the flexible beam method. Flexible beam method, straw work as a grinder to cut the object, the movement of the simulation data obtained by the interaction of the blade grinder on the grinder, power has an important significance. In order to improve the performance of the grinder blades, you need to get the tool inclination angle and cutting speed on cutting force, cutting power consumption rate.Finally, Experimental tests of prototype manufacturing to build a straw shredder test platform to test the crushing effect. And improved unreasonable conduct field trials. |
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