Experimental Study About The Influence Mechanism Of The Fruit Trees Vibration Harvest

Since the "twelfth five-year",the CPC central committee and the state council for building a well-off society as the work center,focusing on "three rural" at all levels of the government.As a pillar industry of the farmers' income,horticulture has grown up to the third largest farming industry in our country.With the popularity of large-scale fruit production mode,manual picking this kind of traditional way of fruit harvest already moss-grown,mechanized operation way is necessarily in horticulture production promotion.Due to domestic fruit harvest machinery mostly single function,low efficiency,low quality of harvested,therefore,this article on how to improve the quality of recovery efficiency,collecting research analysis,through the laboratory test and field test to explore the influence factors of mechanical harvesting fruit trees.The research object of this article is XinJiang provinces of Chinese flowering crab-apple fruit trees,through the establishment of fruit trees vibration mechanics model,lists the vibration differential equation,to determine the influence factors of vibration picking fruit trees.Verify with the combination of experiment.Tests include:indoor vibration parameter influence laws of test and outdoor fruit drop test.Is obtained by theoretical analysis and experimental results,the following conclusions:(1)In the orchard fruit harvest in the process of actual vibration,according to fruit morphology,fruit trees of different forms of movement will be part of the roughly divided into two types: one type is the main and Center cadres of fruit trees,including the relationship between the position of the node,change the vibration frequency of this kind of form parts obtained in the process of vibration acceleration the vibration equipment is positive correlation;another type is the fruit branch and lateral branch site,the variation of morphological fractions obtained in vibration in the process of collecting acceleration is: first with the exciter vibration frequency increases,the exciter output vibration frequency is set to 20 Hz when received The acceleration reaches the maximum value,and then with the increase of the vibration frequency of the exciter,the acceleration value of the part is reduced;(2)The optimal excitation frequency is 20 Hz,the optimal position of vibration is from the fixed end 60 cm,the optimal vibration displacement is 5 mm;(3)Under the vibration condition of the optimal excitation parameters of the electric excitation equipment,the average value of the three direction acceleration of the test sample was obtained at 19.90375g;(4)The flowering crab-apple fruit fruit loss in the process of sports including free oscillation and rotate around the peduncle combining site.Chinese flowering crab-apple fruit fruit off the biggest instant speed(3.552 m/s),acceleration(189.246m/s squared),fall off inertial force(2.460 N).Outdoor test to verify the indoor test to get the optimal vibration parameters of the correctness of guarantee the correctness of the test for the vibrating machine theory basis is provided for the development of the fruit harvest.