Experimental Analysis of Pod Blasting Factors of Rapeseed Pods at Mature Stage Based on Pendulum Method
In order to reduce the pod-blasting caused by the pod-blowing process of the rape combine harvester,the pen-dulum method was used to simulate the pod-blowing process of the rape combine harvester.The factors affecting the pod-blowing process were tested and analyzed,and the changes and processes of pod damage were analyzed.The test results show that the impact velocity of the pendulum is 3.5 m/s,and the position of the clamping fruit stem is 2 mm from the connection point,which is the optimal parameter to distinguish the resistance of the pod to the impact.The pod frying of rape pods is not only related to the impact speed and the clamping position of the fruit stalk,but also to the rape variety,the material type of the impact piece,the stress surface of the pod,the moisture content,and the distribution position of the pod on the plant.When the impact velocity is not more than 1.5 m/s,the pod damage is mainly caused by the plastic deformation of the pod stalk.When the impact velocity is between 2.5 m/s and 4.5 m/s,the pod damage is mainly caused by the rupture and separation of the peel and the elastic deformation of the fruit stalk.This study can provide reference for the design and working parameter selection of the rape reel.
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