关键词: 甘蓝, 手扶式收获机, 物理特性试验, 模态分析, 收获成品率

Abstract: Cabbage is the main cultivated crop of vegetables in China, which is grown from south to north. Aiming at the problems of low manual efficiency, high cost and low degree of mechanization for cabbage harvesting operation, in this paper, a kind of handheld cabbage harvester suitable for the main planting varieties and planting patterns of cabbage in Jiangsu is designed, which can complete the operations of cabbage plucking, clamping and conveying, root cutting and boxing at one time. Based on the analysis of the overall structure of the cabbage harvester, the working principle of whole machine is explained, and the prototype is completed after the analysis and verification of the key components of the harvester based on the physical and mechanical characteristics of cabbage and Ansys modal analysis. The field test was conducted with cabbage harvesting pass rate, root cutting pass rate, cabbage damage rate and cabbage loss rate as evaluation indexes. The test results show that the machine has stable working performance and good harvesting effect, the cabbage harvesting qualification rate is 92.8%, root cutting pass rate is 93.5%, cabbage damage rate is 6.6%, cabbage loss rate is 4.2%, all the performance indexes meet the design requirements and relevant standards, and the research results can provide reference for the development and structural improvement of cabbage harvesting equipment.

Key words: cabbage, handheld harvester, physical characteristics test, modal analysis, harvesting qualification rate