Jixie chuandong (Mar 2022)
Research on Design and Characteristic of Vibrating Earth Crushing Mechanism of Ligusticum Wallichii Harvester
Abstract
Considering the Ligusticum wallichii-soil mixture is easy to block and the broken soil is difficult to separate when the Ligusticum wallichii is excavated and harvested，a vibration mechanism of double rocker threw broken soil is designed，and the kinematic characteristics of the mechanism are studied. The kinematic analysis and modeling of the vibrating earth breaking mechanism are carried out by analytical methods，the kinematics of the earth breaking vibration mechanism is obtained，the kinematic simulation of the earth breaking mechanism is carried out using Adams，the centroid displacement，velocity and acceleration of the mechanism are obtained，and the motion law and soil crushed ability of the vibrated soil crushed mechanism are verified. The results show that when the crank of the double rocker threw and crushed mechanism are at a turned angle of 22.4°，the mixture would be thrown away，and the horizontal backward movement distance is 67.1 mm，which is greater than the forward distance of the harvester 39.7 mm，realizes the backward conveyed of the mixture，the separation of the broken soil and avoids the occurrence of soil clogging. This research provides theoretical support for the design of the vibration crushing mechanism of the Ligusticum wallichii harvester.
