Experimental Study On Mechanism And Performance Of Rice Seedling Trees

Rice is one of the main food crops, it occupies an important position in grain production of our country. HeiLongJiang province is a major producer of rice. Due to the generally poor weather condition in northern China, rice mature period is shorter, not suitable for live, rice YangPan raising seedling planting technology is to guarantee the survival rate of seedlings, increase production of planting method, to apply to rice raising seedling planting operation, choose the JingGuan PZ60 type rice transplanter as the main model. Without the condition of changing the original machine versatility, optimizing the structural parameters of seedling needle parts, pushing the seedling stem component performance analysis, and complete taking pushing seedling mechanism performance test research。The main research contents include:(1)Take seedling testWhen Taking seedling planting machine operations, to meet the requirements of port boards for structure size and strength, we design a seedling needle parts and analyzes the structural characteristics and working principle, analysis the finite element to determine its material. Forcing analysis of the seedling needle force to determine the influencing factors and indicators, adopting single factor experiment to determine which influence factors is perhaps the most optimal value.(2)Push the seedling testIn the process of pushing seedling operation with rice planting machine, we need to analysis the dynamics theory of pushing seeding stem component. Using high speed camera to capture instantaneous posture of push seedling component. Through comparing with theoretical trajectory analysis, we know, seedling needle plug seedlings clockwise. Seedling clip stability, the seedlings slices volume uniform, no injury seedling phenomenon, push seedling stem component push seedling smoothly, the seedlings are vertical with the ground state, ensures that meet the requirements of seedling planting upright degree,meet the requirements of planting machine operation.Cultivating rice planting quality bowl seedlings, measuring seedlings potting soil bulk density and calculating the influence of cutting volume index. Using high speed camera to capture the moments of seedling needle in seeding. Measured the instantaneous speed and acceleration of seedling needles when seeding. According to the accelerated speed to calculating the cutting force when you pick up the seedling needle. Through the orthogonal experiment and variance analysis method, analysis the changing relationship of seedling needle in three different angle factors between the rail force and the cutting volume index. Confirming the best combination structure parameters is: Cutting Edge Angle is42°, Blade Angle is 50 °, Front Angle is 2-4 °.