机械式排种器同步柔性皮带护种器的设计  

Design of synchronization flexible belt protecting device for metering device

作　　者：王冲[1] 宋建农[1] 王继承[1] 武广伟[1] 刘彩玲[1] 

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《农业工程学报》2009年第10期107-111,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金："十一五"国家科技支撑项目(2006BDA28B00-05)

摘　　要：针对机械式排种器中的固定板(带)式护种器伤种率高、机加工复杂、安装要求严格和不易更换等问题,设计出一种同步柔性皮带护种器。对其结构进行设计,并对同步理论和皮带对种子最大支撑力进行了分析,导出同步的临界条件和影响同步效果的因素,皮带对种子的最大支撑力远远小于种子自身的破坏力。通过试验表明,利用同步柔性皮带护种器比传统固定板式护种器减少种子的破碎率0.5%以上,有利于节约种子,提高种子的出芽率。To resolve the problems of damage seed, complex machining and difficult exchange for traditional fixed board（belt） protecting seed device of metering device, the new protecting seed device was proposed. The structure and working principle were introduced, synchronization theory and maximum support force of protecting seed device was analyzed, critical condition of synchronizations was exported, and factors that impact on synchronization were obtained, maximum support force of protecting seed device was much smaller than seed compression failure force. The experiment results showed that the new protecting seed device decreased above 0.5% of rate of damage seed, and it was good at saving seeds and raised the germination rate of seeds.

关 键 词：农业机械 同步 皮带 排种器 护种器 破碎率 

分 类 号：S223.24[农业科学—农业机械化工程]