Virtual Design And Experimental Sdudy Of Pre-cut Sugarcane Precision Planter

The most of the sugarcane planting machines that used in the market are instant cut type at present in China,this kind of sugarcane planting machine needs more consumption,costs heavy manual work and high cost,and it increases the chance of injuring a bud,which leads to a low budding rate and high seed consumption.Nowadays,the related institutions and universities have developed pre-cut sugarcane planting machine at present,comparing with instant cut sugarcane planting machine,it has greatly reduced the artificial cost,the sugarcane that has been cut in advanced and chosen is all fine breed,the pre-cut sugarcane planting machine increases the budding rate because of the fine breed.The uncontrolled planting of instant cut type leads to uneven planting and growing of sugarcane,what’s more,the number of sugarcane that used is huge.Combining with the key project in GuangXi,this paper adopts the method of combination of ADAMS simulation and experiment to do the innovation design on it’s structure based on the pre-cut sugarcane planter which has been developed,in order to make the planting uniform,controllable and precise.In this paper,the pre-cut sugarcane planter that has been developed by the cooperative enterprise is used as the research object to propose the innovation design,and to use the ADAMS simulation to make kinematics simulation on the structural design,to conduct the experimental study on physical test platform that developed by our laboratory to verify the simulation results,and obtain the optimum parameters of the main structure by the experiments.The main contents of this paper are as follows:(1)Adding iron columns on the reversing device.The ADAMS simulation has been used to do kinematics on the reversing device,the results of the simulation shows:91.4%of sugarcane switched directions;the performance test has been carried out on physical test platform of reversing device,the results tell us that 94%of sugarcane switched directions.In addition to this,we have studied the logistics characteristics of sugarcane and laid a foundation for the follow-up work.The results of virtual simulation and physical experiment show that the structure of steering device is reasonable and effective.(2)We have done innovation design for the box that used for secondary storage,such as adding an inverted V-shaped plate used for flow direction controlling,adding a panel that combined by two curved surfaces as a side plate of the box,and adding elastic device on the side plate.We used ADAMS to carry out kinematics simulation on the structure of the secondary cane storage box,and the results shows that about 88.9%of the sugarcane were evenly arranged in the box;the results of the physical experiment tells that about 95.3%of the sugarcane were evenly arranged in the box,consistent with the simulation results,it means that the structure of the inverted V-shaped guide plate and the box is effective.In addition,single factor tests were carried out on the structure of the side plate of the box,and it shows that a panel that combined by two curved surfaces as a side plate of the box lead to better planting,lower leakage rate.The elastic device plays an effective role in the single factor tests,it reduces the probability of card jam.(3)Two kind of planting devices has been designed innovatively,which include a roller for planting,the elastic device.The performance simulation tests about the roller have been completed by using ADAMS,we have also done optimized design on the planting devices,to obtain the optimum size combination about the structure of the planting devices:12 toothed harrows on a circumference,85mm long toothed harrow,a harrow roller with a center distance of 175 mm.Simulation comparison and analysis about the different structures of the planting devices such as single roller and double rollers which is driven by gears have been finished,and the results shows that the structure that have single roller have better uniformity on planting.There are 1.33%leakage rate about the single roller in the physical experiment,and its mean time interval is 1.256s,the standard deviation of the time interval is 0.416s,the data all above indicates that the structure of the single roller is effective because of its better uniformity on the planting.The single factor test has been carried out about the rotating speed of the planting roller in the physical experiment,the results manifest a regular that the rotating speed of the planting roller has a significant effect on the itself about the uniformity of the planting,the higher the rotating speed is,the higher the leakage rate is.(4)Orthogonal test on the structure and the Angle of the side plate of the secondary cane storage box,and the rotating speed of the planting roller has been adopted.The results of this test validated the consequence of the single factor test,besides that,it tells us the primary and secondary order of the influencing factors:the rotating speed of the planting roller>the structure of the side plate of the secondary cane storage box>the Angle of the side plate of the box,and obtains the optimum structure and the combination size:a panel that combined by two curved surfaces as a side plate of the box,105° as the side plate Angle,6r·min-1 rotating speed of the harrow roller.The above related research in this paper lays a certain theoretical foundation and a reference for the further development of intelligent planter.