Fatigue Analysis and Structural Optimization Design of the Slot of Knotted Frame of the Square Baler

Abstract

Abstract The frame is a key part to ensure the reliability and life of the knotting device of the square bale baler, and it is also the difficulty of localizing the knotting device. The inner wall of the frame slot of the frame is at a right angle structure, and the stress concentration is obvious. Under the impact load, the stopper will cause premature shear failure, delay the timing of forage bale, increase maintenance costs, and reduce the operating efficiency of the baler. This paper analyzes the failure characteristics of the D-type knotter frame slot, uses ANSYS-nCode joint method to simulate the fatigue life of the knotter frame slot, and uses the response surface method to optimize the design of a U-shaped slot. The simulation results show that when the radius of the U-shaped slot is 2mm and the gap between the bottom of the slot and the first rope clearing piece is 1mm, the fatigue life of the U-shaped slot increases. This research is of reference value to improve the fatigue performance of the knotter frame and enhance the durability of the knotter.