Authors

Abstract

Vegetable industry occupies a significant position in the world agricultural production, China has been the largest vegetable producing country in the world. However, the mechanization of vegetable production is still in the initial stage. There are many problems such as complex environment, non-uniform agronomy, various kinds of agricultural machinery etc. In order to meet the varied requirements of vegetable field work, in this paper, a new type of high-efficiency vegetable field operation power equipment was developed by adopting the idea of "frame-type", and the key components are developed. They include ground gap adjusting mechanism, wheel spacing adjusting mechanism, inter-axle hitch mechanism, the rear hitch mechanism and frame. The vibration modal analysis and stiffness analysis of the frame are carried out by ANSYS, which proves that the frame design is reasonable and meets the use requirements. Finally, a prototype was made and field experiments were carried out. The results showed that the maximum running speed of the multifunctional vegetable field machine was 16 km/h, the maximum operating speed was 8Km/h, the maximum gradient was 20, and the adjustable range of ground clearance was 400 ~ 800 mm. The adjustable range of wheel spacing was 1600-2000mm.

Abstract in Chinese

蔬菜产业在世界农业生产中占有重要地位,中国已成为世界上最大的蔬菜生产国。然而，蔬菜生产机械化程度仍旧很低，存在着田间环境复杂、农艺不统一、农机具种类繁多等诸多问题。为满足蔬菜田间作业农艺需求多样化的要求，本文采用“框架式”结构设计思想，开发了一种新型多功能高效蔬菜田间作业动力设备，并对其关键部件进行设计，包括地隙调节机构、轮距调节机构、轴间悬挂机构、后悬挂机构和车架。利用ANSYS对车架进行振动模态分析和刚度分析，证明车架设计合理，能够满足使用要求。最后，试制样机并进行田间试验。结果表明，多功能蔬菜田间作业机的最高运行速度为16公里/小时；最大运行速度8Km/h，最大坡度20°，离地间隙可在400 ~ 800 mm范围内调节；轮间距可调范围为1600-2000毫米。