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为保证播种机播种深度的稳定性,开沟器的仿形轮对地面的压力应比较稳定。根据这个要求,用最优化方法对开沟器的平行四边形连接机构进行了计标。计算结果为,取连接机构的拉杆长350毫米时,仿形单体的最佳重量为25～30公斤,相应的拉杆角度为0°～8°;取拉杆长400毫米时,最佳重量为20公斤,相应的拉杆角度2.5°～-2.5°。
In order to ensure the sowing machine planting depth stability, opener profile wheel pressure on the ground should be relatively stable. According to this requirement, the opener’s parallelogram connection mechanism was calibrated using the optimization method. The calculation results are as follows: taking the connecting rod length of 350 mm, the best weight of the copying monomer is 25 to 30 kg and the corresponding pull rod angle is 0 ° to 8 °. When the pull rod length is 400 mm, the optimum weight is 20 kg, the corresponding lever angle of 2.5 ° ~ -2.5 °.