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小麦摩擦与拉伸性能

, PP. 501-507

Keywords: 农业机械化工程,收获机械,摩擦,小麦,拉伸性能

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Abstract:

为解决小麦收获机械中存在的损失、损伤、含杂率高、断裂及粘附问题,对小麦进行摩擦和拉伸试验。以“济麦20号”为试验对象,含水率36.16%为试验边界条件,采用PM-8188谷物水分测试仪测试含水率、机械式静摩擦试验台测试静摩擦因数、QT-1186电子试验机测试拉伸特性。结果表明:橡胶材料与小麦各部分的静摩擦因数较大,仿生拨禾机构和仿生脱粒机构采用橡胶材料能够增加静摩擦力;小麦各部分的抗拉能力从下向上逐渐减小,采用水平旋转揉搓脱粒工艺、仿生切割摘穗部件能够提高脱净率、降低含杂率、减少额外功耗。

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