新型海带夹苗机械系统的设计及仿真分析

针对海带夹苗作业过程中劳动强度大、工作效率低等问题,设计一种新型海带夹苗机,以期实现苗绳破扣、后插送苗夹苗及苗绳复位等过程的自动化。介绍了新型海带夹苗机械结构组成、夹苗工艺及工作原理;设计了后插执行机构;利用仿真软件对海带夹苗机械装置进行操作过程的运动仿真分析。结果表明:苗绳破扣进给长度为60~80 mm较为理想;绳夹夹取苗绳扭矩应小于4.2 N·m;当破扣时,扭转角对破扣绳径的影响是转角越大则绳径越大;采用后插方式夹苗,可提高插苗成功率、降低伤苗率。新型海带夹苗机械系统设计可为海产植物种植装置的开发应用提供参考。

Design and simulation analysis of a new type of kelp seedling clamping mechanical system

In order to solve the problems of great labor intensity,low working efficiency,etc. in the process of kelp seedling clamping operation,a new type of kelp seedling clamping machine was designed,with the aims to automation of the process of seedling and rope buckle breaking,clamping of post-transplanting seedling and restoration of seedling and rope,etc..This paper introduces the mechanical structure,the technics and working principle of the machine.And post-insertation executive structure was also designed.The kinematical simulation analysis of operation process was performed by applying the stimulation software. The results showed that the ideal feeding length of seedling and rope buckle breaking was 60-80 mm; torque of rope clip and seedling clamping rope should be less than 4.2 N·m;when the buckle was broken,the larger the torsion angle is,the larger diameter of the rope is;adopting the clamping of post-transplanting seedlings could increase the survival rate of post-insertion seedlings and reduce the rate of damage to the seedlings. The design of a new type of mechanical system of kelp seedling clamping can provide references for the development and application of the planting device of marine plants.