Contouring the soil surface during cutting and/or lifting of agricultural products

Revista Brasileira de Engenharia Agrícola e Ambiental

Braunbeck, Oscar A.¹  Magalhães, Paulo S. G.¹ 

[1] UNICAMP

关键词: harvesting;    loading;    ground sweeping;    mechanisms;    control    INTRODUÇÃO Certos produtos agrícolas;    como colmos inteiros de cana-de-açúcar;    vagens de algumas cultivares de feijoeiro ou soja;    tomate para processamento industrial e outros produtos hortícolas;    se apresentam;    no momento da colheita;    encostados ou muito próximos da superfície do solo;   

DOI  :  10.1590/S1415-43662002000100027

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

Harvesting and loading of products, such as beans, sugarcane and some horticultural ones require a precise ground contouring process. Lifting forks should neither get away from the ground surface nor penetrate into it in order to avoid losses in the first case or product contamination with silt or soil bacteria in the second case. Active or passive mechanisms can be used to follow the ground profile. Lifting or cutting devices can be mounted on linkages having instant rotation centers adequately located for optimum flotation performance. The reference point of the ground following process should be close enough to the lifting or cutting point to avoid position errors resulting from ground surface unevenness. The main limitations of the articulated fork of the combine sickle bar and the double disk base cutter of the Australian sugarcane harvesters are discussed and alternative solutions are proposed to improve ground following performance. Research results of passive mechanisms having low and high mass are discussed together with an active control system for a combine header.

【 授权许可】

CC BY-NC