基于剖茎—回转抽薹法的蒜薹采摘一体机设计OA

Aiming at the problems of short harvesting window,low efficiency and high labor intensity of manual picking,and low mechanization level of garlic bolt picking,a garlic bolt harvester based on the stem-splitting and rotary bolt-extraction method was designed by imitating the manual bolt-pulling process.According to the physical characteristics and planting patterns of garlic plants,the structures of the parallel stem-splitting truncated device,the pushing and rotating bolt-extraction device,and the sinking conveying and bundling device were designed.This can achieve the functions of splitting the pseudo stem of garlic seedlings,cutting and pulling out the garlic bolt,as well as transporting and quantitatively bundling.Based on the bolt-extraction principle of the rotary bolt-extraction device,a bolt-extraction simulation test bench was built to carry out bolt-extraction tests under different clamping forces and extraction speeds.It was determined that the optimal clamping force for bolt extraction is 12 N,and the extraction speed is 5 mm/s.Based on the experimental results,a mathematical model of the stem-cutting length of the cutting cone in relation to the machine's forward speed and the motor speed of the truncated device was established,considering the vector synthesis relationship among the bolting speed,the machine's forward speed,and the roller's linear speed.According to the model,it can be known that the stem-cutting length of the cutting cone will increase as the machine's forward speed increases or the motor speed of the truncated device decreases.This research can provide references for the design and improvement of garlic bolt mechanized harvesting equipment.