Damage Mechanism And Experimental Study Of Mechanical Harvesting Peppers

In this paper, mechanized harvesting peppers injury problems to be solved are currently produced inXinjiang, picking peppers studied the mechanism of injury, and the bench analysis. Provide theoreticalbasis and reference for chili harvester experimental design optimization, has very important significance.This paper studies on the mechanical harvesting of pepper damage, mainly from the following aspects:Simple determination of the main physical characteristics associated with the test plate pepper fruit,pepper fruit on the mechanical properties were studied, obtained its ultimate stress under differentmoisture content, elastic modulus and strain; further drawn pepper fruits moisture content of about40%for the best picking time. And to study the characteristics of pepper picking damage and injuries hazards.Picking process using high-speed cameras to observe the fruit of pepper, pepper fruit has been inthe process of picking force status and role of injury is mainly due to the impact of the pepper fruit bombtooth formation; damage to pepper fruit yield deformation occurs critical state as a condition to get thevelocity equation pepper fruit damage not occurred, the damage does not occur drawn critical speed.The use of finite element analysis software ansys collision pepper fruits finite element analysis, the forceof the collision process the largest regional centers, to spread around and gradually decreases; damage ismainly caused by the compressive stress.Tooth use bomb test device picked homemade, single factor and orthogonal experiment. UsingExcel software univariate smooth line graph, intuitive description of the contact pepper fruit damage andvarious test parameters. Use DPS data processing software, the orthogonal experiment were pooranalysis and variance analysis and the results showed that: the drum speed is the main factor causinginjury pepper fruits. DPS software for use with drum Tine pepper fruit damage rate of polynomialfitting, pepper fruit finally get the critical injury of roller speed, and on the fitted regression equationswere significant test and the coefficient of determination test. Roller speed to get pepper fruit injury forthe study of damage in the course of the actual harvest, made full preparations.