SYJ-2型液肥变量施肥机设计与试验  

Design and Test of SYJ-2 Type Liquid Variable Fertilizer

作　　者：王金武[1] 潘振伟[1] 周文琪[1] 王金峰[1] 何剑南[1] 郎春玲[1] 

机构地区：[1]东北农业大学工程学院,哈尔滨150030

出　　处：《农业机械学报》2015年第7期53-58,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：'十二五'国家科技支撑计划资助项目(2013BAD08B04)

摘　　要：变量施肥技术是精准农业的重要组成部分,依据农业生产要求设计了与轮式拖拉机配套的SYJ-2型三点悬挂式液肥变量施肥机。以单片机作为核心处理器,以电磁比例调节阀为执行部件,设计编写了液肥变量控制系统以及与硬件配套的上位机软件,用于采集数据与发送命令;关键部件内腔式旋转扎穴机构采用5个全等椭圆齿轮传动,液肥在内腔流动,在减少外部连接软管的同时,防止了管路缠绕;液肥分配器的功能是适时开启和关闭,实现液肥的不连续射出,进而完成穴施作业;同时对内腔式旋转扎穴机构和液肥分配器进行了结构设计。田间试验结果表明,施肥深度为地表12-15 cm,施肥精度为99.1%,满足液态变量施肥作业要求。Variable fertilization technology is an important part of precision agriculture. According to the requirements of agricultural production,the SYJ-2 type three-point suspension liquid variable fertilizer machine was designed which was matched with wheeled tractor. Taking the single chip microcomputer as the core processor and the electromagnetic proportional adjusting valve as the execution unit,the control system for liquid variable fertilizer and the upper computer software works in concert with hardware were designed and programmed for collecting data and sending the command. The key components,which called rotary pricking hole mechanism,used five congruent oval gears to drive. The liquid fertilizer flew in the cavity of rotary pricking hole mechanism. This agency reduced the external connecting hoses at the same time and prevented the pipe twine. The function of the liquid fertilizer distributor was opened and closed timely. The mechanism could achieve discontinuous injection of liquid fertilizer,then complete the injection operation of liquid fertilizer. The structures for distributor and intracavity rotary pricking hole mechanism were designed at the same time. The field experiment results showed that the fertilization depth was 12 - 15 cm below the soil surface,and the fertilization accuracy was 99. 1%,which meets requirements of liquid fertilizer for variable fertilization.

关 键 词：深施 液肥施肥机 变量 设计 试验 

分 类 号：S224.21[农业科学—农业机械化工程]