Test-bed Design And Experiment Research On Multi-function Transplanting Machine

Rice planting area in China is26.3million hm2at present, but planting mechanization level isless than10%, rice mechanization planting level is low. Pot seedling transplanting technology isplanting seedlings with nutrient soil in the nutrient concentration, higher temperature paddy fieldsurface，it owns no root damage, no slow seedling stage, green returned quickly, ear of wheat spikeneat shape, mature uniform, etc，the seedlings implementation the same line and isometric，to thebenefit of seedlings growing in field. Pot seedling transplanting technology achieved the purposeof reduce cost, increase quality and efficiency.Based on the research of rice pot seedling transplanting machine situation at home andabroad，test-bed of rice pot seedling transplanting machine was designed，Use the test bench candouble crank transplanting mechanism、high-speed rice pot seedling transplanting machine and dryfield rotary pot seedling transplanting mechanism pot seedling experiment can be researched withthe test-bed, based on double crank transplanting mechanism of taking seedling experiments,through data analysis, finally obtain the optimal working parameters condition, and identify threefactors influence on the injury rate of seedling, the leakage rate of seedling, test the rationality ofthe device in mechanical properties、the technological effect, and provides experience and data forfurther improvement. The main research is as follows:1、 Designed the rice pot seedling transplanting test device according to agronomicrequirements, and using Solidworks software to digital modeling and assembly, and processingphysical prototype, shorten the test-bed design cycle.2、Rice pot seedling transplanting test-bed device simulation analysis has carried on byusing ADAMS software, the transplanting trajectory was obtained, and the locus of ricetransplanting machine was analyzed to ensure it can meet the path take seedlings height and angle,the rationality of the mechanism motion was determined.3、In this paper, the rice pot seedling pushing, rice pot seedling detaching force factorseffective were respectively analyzed with the single factor analysis, provide data reference for potseedling transplanting, adopting orthogonal test solutions to test and research the performanceunder different parameters, through analyzing the test data processing, set up primary andsecondary order between clip mouth opening size、seedling clip clamping force and seedlingplanting frequency, analyzed the optimal combination of the experimental factors on performance indicators.Through the above research, get the following aspects conclusion:1、The test bench design meet the test requirements, the practical work operation smooth,transmission accurate and reliable.2、Through the simulation analysis to double crank transplanting mechanism got the design ofthe structure was rationality, the simulation trajectory and the theoretical basic trajectory wassame, meet the requirements of plant seedlings.3、Tests show that the main order effects on injury rate respectively is seedling clip clampingforce B> seedling clip mouth opening size A> take seedlings frequency C, the optimalcombination is A2B1C2, injury seedling rate was0.411%, the main order effects on seedling leakagerate respectively is seedling clip clamping force B> take seedlings frequency C> take seedlingsclip mouth opening size A, the optimal combination is A3B3C2,seedling leakage rate was0.164%.4、 Through the final optimization, the optimal working parameters of double cranktransplanting mechanism combination is the seedling clip mouth opening size18mm, seedling clipclamping force6N, take seedlings frequency170times/s, through verification test, the optimumcombination A2B1C2, performance is stable, total lack of seedling rate was1.044%.