Design Of Lightweight And Semi-automatic Transplanter And Research On Its Key Components

Transplanter is a machine to replace artificial transplanting equipment with a time-saving,efficient and cost-effective.At present,a variety of artificial transplanting machines have been developed in China.But the structure is relatively complex,the body is relatively large,and the operating skills are demanding.On this basis,this paper proposes to develop a light and simple semi-automatic transplanter that is simple and lightweight and suitable for the cultivation of medium-sized vegetables in China.The main research content is as follows:(1)Design the overall scheme of the light and simple semi-automatic transplanter.Through the simulation analysis of the planter movement trajectory,the planetary roller chute planter was determined as the planting part of the transplanter in this paper.(2)Design planetary gear chute planters.Determine the slip angle of the chute,the length of the planet carrier,the length of the rotating connecting rod,and the important gear parameters of the planetary gear mechanism;analyze the main factors affecting the opening distance of the duckbill,and determine the travel distance of the stroke rod(cam stroke)and the position of the C point.(3)Kinematic simulation of planetary gear chute planters.The simulation analysis shows that the tip of the duck's beak moves in order to provide the basis for optimizing the planter.Analyze the trajectory of the prefrontal and posterior forehead of duck beak with different characteristic parameters.The analysis shows that: when the seedlings stand upright,they meet the design requirements.(4)Design the prototype control system.Build a power distribution system for various operating modes,determine the hardware composition and control flow of the control system.(5)Prototype field performance test.The battery life test shows the cruising range of the prototype is at least 1.05 km and the battery life is at least 2 hours.The life of the prototype meets the design requirements.The transplanting experiment showed the leakage planting rate was less than 5%,the lodging rate was less than 7%,the plant spacing variation coefficient was less than 25%,the planting depth qualification rate was more than 75%,the planting qualification rate was more than 90%,and the operating performance was stable and the planting quality was good.In line with the main performance indicators for dryland transplanters.