Simulation Analysis and Experimental Research on Silage Corn Crushing and Throwing Device

Abstract

HIGHLIGHTS The mechanism of straw smashing was analyzed. Factors such as the speed of the cutter shaft, the number of blades, the thickness, and the inclination angle had a greater impact on the theoretical length of the straw section after crushing. Based on the straw crushing mechanism, the structure of the crushing chamber was designed. The corn stalk crushing and sending device was trial-produced and field experiments were carried out. ABSTRACT . In order to further improve the crushing quality of corn stalks, this research designs a corn stalk crushing and throwing device. First, it introduced the overall structure and working principle, and analyzed the crushing mechanism of corn stalks to obtain the main factors affecting its crushing performance. Then, the crushing blade in the crushing chamber was designed to determine that the number of crushing blades was 10. Kinematics and dynamic balance analysis, and the establishment of a mathematical model, the speed range of the crushing cutter shaft was 530~900 r/min. On this basis, the ADAMS motion simulation software was used to measure the change curves of the restraint force, runout, and acceleration of the shaft end with different speeds of the crushing cutter shaft. The simulation analysis finally determined that when the speed of the crushing knife shaft was 700 r/min, and the working performance of the device was better and meets the requirements of dynamic balance. Finally, the verification test was carried out, and the result shows: when the speed of the crushing knife shaft was 700 r/min, the qualified rate of corn stalk crushing length was 93.65%. Compared with the original silage corn crushing and throwing device, the performance had increased by 4.78%. It meets the standard of corn stalk crushing operation, which can provide a theoretical basis and scientific basis for the design and optimization of corn stalk crushing and returning equipment. Keywords: Crushing mechanism, Dynamic balance, Motion simulation, Silage corn.

Alfalfa Stalk Crushing Simulation Test and Parameter Optimization Method

“…At present, scholars have conducted research and achieved many results on the material crushing device. Niu et al [17] designed a corn straw crushing and scattering device, and through simulation tests and physical tests, they determined that when the crushing knife shaft speed is 700 r/min, the device has better working performance and the corn straw crushing qualification rate is 93.65%. Wang et al [18] studied the cutting and crushing mechanism of cotton straw based on ANSYS/LS-DYNA 13.0.…”

Analysis and Structural Optimization Test on the Collision Mechanical Model of Blade Jun-Cao Grinding Hammer

“…At present, the research on biomass crushing is related to the fact that the research object is quite different from Jun-Cao. On the other hand, the research is focused on the hammer structure [17][18][19][20][21], model prediction [22], flow field analysis [23] and properties analysis [24][25][26], and the analysis of the force model in the crushing process is relatively vague.…”