Design And Simulation Of No-row Corn Harvester’s Header

In order to meet the adaptive requirements of harvesting corns with a variety of plant spacing, by analyzing and summarizing the existing harvest technology of corns in no lines, combined with the latest foreign technology, we should design a new type of harvest cutting machine for corns in no lines, which is suitable for our country. In this paper, I analyze the limitation of the front conveying chain forced feeding, and put forward the design scheme about harvest cutting machine s, according to the working principle of the existing harvest cutting machine for corns in no lines.The machine uses the stalk cutting and high grain technology, using lifting equipment instead of the front conveying chain. In the process of harvesting, the corn plant will be separated by the divider, following the machine into the work area of the device. The corns are cut by stem cutting device and sent to picker in the use of lifting device and the reel chain.The pulling process of stem in lifting wheel can be divided into two processes: round process and from process. through the force analysis of the stem, result in conditions; through the virtual prototype simulation based on ADAMS, simulate the process of extrusion of the stem, concluding that the involution lifter refers to the base circle radius 75 mm, lifting wheel the diameter of 200 mm and a grain lifting wheel speed 30r/min and other parameters, and according to this, designing the worm gear box and hydraulic system taking hydraulic motor as executive component.By the simulation of moving blade on stem cutting device in ANSYS/LS-DYNA, the influence of various factors on the knife disk power consumption were analyzed and optimize parameter of stem cutting device were chosen. The optimal parameter for blade angle is 30 degrees, the disc cutter speed 900r/min and stem cutting angle of 30 deg.Through the virtual prototype modeling in UGNX8.0 and simulation of the stem cutting device to drive the gear box of the analysis in ADAMS, verify the correctness of the design, measure the load of 10 Nm on the output shaft and conclude that transmission efficiency of a gear box 83.72% when input shaft speed is 5400deg/sec.