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目前香蕉采收处理对蕉穗的夹持一般采用尖锐部件插入果轴的方式,导致卸荷后果轴不能自动脱离夹持器,不利于实现香蕉落梳机械化和自动化。针对上述问题,设计出气动夹持装置和弧形夹持部件,分析了夹持部件与果轴间的相互作用关系,确定了影响夹持部件与果轴间当量摩擦力的关键因素。试验结果表明夹持部件材料、夹持部件内弧面面积、果轴直径和气缸气压4个因素对当量摩擦力具有显著性影响(P<0.05);对当量摩擦力影响的主次顺序依次为夹持部件材料、夹持部件内弧面面积、气缸气压、果轴直径。正交试验回归分析表明采用橡胶夹持部件,内弧面面积为1 885 mm~2,气缸气压为0.5 MPa,果轴直径为69 mm时当量摩擦力最大,为359.494 N,实测值为375.975 N,与回归分析结果无显著性差异。该研究可为茎杆类植物体夹持方法和夹持部件的改进与应用提供参考。
At present, the banana harvesting treatment of banana spikes generally adopt sharp parts into the fruit shaft, resulting in unloading the consequences of the shaft can not automatically from the holder is not conducive to the realization of banana comb mechanization and automation. In view of the above problems, the pneumatic clamping device and the arc-shaped clamping component are designed. The interaction between the clamping component and the spindle is analyzed, and the key factors affecting the equivalent friction between the clamping component and the spindle are determined. The test results show that there are significant influences on the equivalent friction force (P <0.05) by four factors: the material of the clamping part, the area of the arc in the clamping part, the diameter of the shaft and the pressure of the cylinder (P <0.05) Clamping member material, the arc area of the clamping member, cylinder pressure, diameter of the shaft. The regression analysis of orthogonal test shows that the equivalent friction force is 359.494 N and the measured value is 375.975 N with the rubber surface area of 1 885 mm ~ 2, the cylinder pressure of 0.5 MPa and the diameter of 69 mm. , No significant difference with regression analysis. The research can provide reference for the improvement and application of the stalk holding method and the clamping parts of stalk.