Substantiation of parameters of unbalanced vibration exciter of berry harvester

Vescì Nacyânalʹnaj akadèmìì navuk Belarusì Pub Date : 2023-10-30 DOI:10.29235/1817-7204-2023-61-4-314-323

P. P. Kazakevich, A. N. Yuryn

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Abstract

The paper presents analysis of design of a vibration exciter of berry harvester, and dwells on substantiation of the main parameters of a two-shaft unbalanced exciter drive mechanism. As a result of theoretical studies, the type and design and technological layout is substantiated for a two-shaft vibration exciter with two unbalance unit rigidly connected to each other and rotating in the same direction with a displacement of 180°. Analysis of such a vibration exciter functioning made it possible to determine the rational values of the weights’ mass mа = 4.0 kg and the arms’ length r = 0.02 m, providing vibrations with an amplitude of A = 23…27 mm in the frequency range of oscillations of 8…20 Hz, which corresponds to agricultural and technical requirements for harvesting a wide range of berry crops. The results of the research were used for designing a trailed berry harvester TBH, created by Scientific and Practical Center of the National Academy of Sciences of Belarus for Agriculture Mechanization. It ensures high-quality harvesting with minimal damage to berries and shrubs of chokeberry, currant, gooseberry, dog rose and raspberry, that was determined by acceptance tests.

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浆果收获机不平衡振动激振器参数的确定

对一种浆果收获机振动激振器的设计进行了分析，并对双轴不平衡激振器驱动机构的主要参数进行了论证。通过理论研究，确定了两不平衡单元刚性连接、同方向旋转、位移为180°的双轴激振器的型式、设计和工艺布置。对这种振动激励器的功能进行分析，可以确定重量m_ = 4.0 kg和臂长r = 0.02 m的合理值，在8…20 Hz的振荡频率范围内提供振幅为a = 23…27 mm的振动，这符合收获各种浆果作物的农业和技术要求。研究结果用于设计白俄罗斯国家科学院农业机械化科学与实践中心研制的TBH履带式浆果收获机。它确保了高质量的收获，对樱桃、醋栗、醋栗、狗玫瑰和覆盆子等浆果和灌木的损害最小，这是通过验收测试确定的。

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Vescì Nacyânalʹnaj akadèmìì navuk Belarusì

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