Design And Research Of A Vertical Planting Device For Garlic

Garlic is one of the main cash crops in China,but due to the agronomic requirements of "scale bud upward and vertical planting",it is currently mainly planted artificially,with high labor intensity,low work efficiency and high planting cost,so mechanized vertical planting of garlic has become an inevitable trend.Due to the complex shape of garlic seeds,the current degree of mechanized vertical planting of garlic in China is not high.In this paper,aiming at the problem of low vertical rate of mechanized garlic planting,a garlic vertical planting device is designed,which adjusts the garlic cloves from lying flat to vertical,and then realizes vertical planting of garlic cloves.Complete the structural design and theoretical analysis of the device,and carry out the vertical planting test.The main research contents of this paper are as follows:(1)Taking Jinxiang garlic and Cangshan garlic as the research objects,the physical parameters such as the external size,quality,center of gravity position and crushing resistance of garlic cloves were measured,so as to provide data reference for the design of garlic vertical planting device.(2)According to the agronomic requirements of garlic vertical planting,based on the physical characteristics of garlic cloves,a garlic vertical planting device is proposed,the principle of garlic vertical planting is analyzed,the overall scheme of the device is determined,and the design of key components such as seed delivery mechanism,garlic clove vertical mechanism,continuous planting mechanism,and burrowing shovel is completed,among which the garlic clove vertical mechanism is a three-finger manipulator.(3)Analyze the relationship between finger posture and garlic clove shape when the manipulator clamps the garlic clove and adjusts the direction of the garlic clove,determines the rotation range of the finger joint,and provides parameters for the control of the manipulator;The mechanical model of the manipulator holding the garlic clove and adjusting the direction of the garlic clove is established,the relationship between the finger driving force and the quality of the garlic clove is obtained,and the selection of the drive motor is completed to realize the direction adjustment of different garlic cloves.The success rates of Jinxiang garlic and Cangshan garlic direction adjustment were 92% and94%,respectively,and the test results verified the feasibility of three-finger manipulator work.(4)A test bench for garlic vertical planting device was built.Taking the vertical degree of garlic seeds as the test index,the forward speed of the device and the rotation speed of the continuous planting mechanism were used as the variables to explore the verticality of garlic cloves at different operating speeds.The test results showed that the vertical degree of garlic cloves was the highest when the speed of continuous planting mechanism and the forward speed of the device were equal.Taking the vertical planting qualification rate of garlic as the index,when the advance speed of the device is 0.10m/s and the planting time of a single grain is 1.5s,the vertical planting qualification rate of Jinxiang garlic and Cangshan garlic is 84.5% and 85.5%,respectively,which basically meets the requirements of garlic vertical planting.The designed garlic vertical planting device can realize the vertical planting of Jinxiang garlic and Cangshan garlic in the same direction,which can provide an idea for the design of the vertical planting device of the garlic seeder.