Study On The Mechanical Characteristics And Comminution Mechanism Of Corn Stalks In North China

The mechanical property and sheer property of the North Shengdan 219 were tested and analyed,and the curshing mechanism of corn straw returning machine were theoretically calculated with practical paremeters design,the Creo 3.0 software was used for modeling and ADAMS 2015 was used for simulation analysis,filed trials were carried out,which verified the rationality of the comminution mechanism of straw returning machine.Coupling effects of straw moisture and sampling part on the compression property of corn straw were tested with the compressive strength and shear strength of corn straw and processed date with Design-expert 8.0,which using the three factors of exercise at two levels orthogonal combination method.Based on the analysis of the principle of the comminution mechanism of corn straw balling machine and the calculation of the relevant parameters,the parameters of the comminuting mechanism of corn balling machine are initially set to 230 mm radius of the blade,advance speed of the unit,and speed of the knife roller.The three arrangements are simulated by ADAMS 2015 including symmetric single-spiral and double helix,under the symmetrical arrangement,the binding and bouncing were 634.216N;under the symmetrical arrangement,the shaft end beats at a minimum of7.0e-4mm;In the symmetrical arrangement,the acceleration in the axis direction is the minimum of-5.098-9m/s~2 to 9.894e-10m/s~2;In the single helix arrangement,the acceleration in the axis direction is a minimum m/s~2 of-1.942e-10m/s~2 to 2.142e-10m/s~2,and it is determined that the arrangement of the blade on the shaft is symmetrical.Making prototype machine and field trial processing date with Design-expert 8.0,which verified the rationality of the comminution mechamism of straw returning machine and provided the theoretic foundation for the production of corn straw returning machine.