首页|电驱动偏摆式天然橡胶割胶装置设计及运动特性分析

电驱动偏摆式天然橡胶割胶装置设计及运动特性分析

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天然橡胶是我国重要的战略物资,针对当前胶工流失严重、割胶作业难以实现机械化等问题,设计一种电驱动偏摆式割胶装置.以理论分析结合数学建模为基础进行,通过Adams与ANSYS建立传动结构的有限元模型,并阐述运动特征规律,来验证模型的构建准确性,分析传动部件在运动情况过程下的应力分布、动态特性及振动机理,为便携式割胶装置的设计以及后期改进提供参照途径.通过运动学分析,刀片摆幅、传动结构受力与理论计算值误差分别为4%和3%;在数值模拟中传动结构的最大应力出现在Y型驱动叉与刀座的连接处,XYZ三个方向面的等效应力均小于材料屈服极限,故不会发生失效与出现共振;通过试验分析,偏摆式割胶装置样机相较于传统人工割胶刀,在割胶速度、耗皮厚度以及割胶深度上的平均值相差分别为42.3%、4.3%、0.6%,其中割胶速度差异较为显著.割胶装置的理论模型分析结果与实际样机加工制造的试验情况基本符合.
Research design and kinematic characteristic analysis of electric driven offset natural rubber tapping device
Natural rubber is an important strategic material in our country.In this paper,an electric-driven bias rubber tapping device was designed for the serious loss of rubber workers and the difficulty of mechanization of rubber tapping.Based on the theoretical analysis and mathematical modeling,the finite element model of the transmission structure was established by Adams and ANSYS,and the motion characteristic law was expounded to verify the accuracy of the model construction,and the stress distribution,dynamic characteristics and vibration mechanism of the transmission parts were analyzed in the process of motion.It provided a reference way for the design and later improvement of portable rubber tapping device.Through the analysis of kinematics,the errors of blade swing,transmission structure force and theoretical calculation value were 4%and 3%,respectively.In the numerical simulation,the maximum stress of the transmission structure appears at the connection between the Y-type drive fork and the tapper seat,and the equivalent stress in the three directions of XYZ is all less than the yield limit of the material,so there will be no failure and no resonance.According to the experimental analysis,compared with the traditional manual glue tapper,the average difference of the offset glue tapping device prototype in the glue tapping speed,skin consumption thickness and glue tapping depth is respectively 42.3%,4.3%,0.6%,among which the difference of glue tapping speed is more significant.The theoretical model analysis results of the rubber tapping device are basically consistent with the actual prototype manufacturing test.

natural rubberoffset typeglue tapping devicemechanism of vibration

邓祥丰、陈娃容、曹建华、杨浩勇、许萌、肖苏伟

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中国热带农业科学院橡胶研究所,海口市,571101

国家重要热带作物工程技术研究中心机械分中心,海口市,571101

江苏省农业机械试验鉴定站,南京市,210017

天然橡胶 偏摆式 割胶装置 振动机理

海南省自然科学基金项目国家重点研发计划海南省科技计划项目

521QN09372020YFD1000600ZDYF2021GXJS009

2024

中国农机化学报
农业部南京农业机械化研究所

中国农机化学报

CSTPCD北大核心
影响因子:0.684
ISSN:2095-5553
年,卷(期):2024.45(2)
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