Design And Experimental Study Of Dynamic Notoginseng Precision Precision Seeding Machine

Notoginseng Panax is a valuable Chinese herbal medicine in China, planting area has reached 600 thousand acres, the existing methods of sowing mainly by hand based, labor intensity. Sowing quality is not consistent.There is no complete set of precision seeding machine. In this paper, the design and experimental research of Panax notoginseng precision seeding machine is carried out.(1) Determine the Panax notoginseng precision seeder machine design principles, combined with the requirements of Panax notoginseng planting agriculture, formulates the dynamic type of Panax notoginseng precision seeding machine design scheme, mainly on the design of the whole structure, metering system design, design of opener, pre copying structure design and the transmission principle and Route part of a systematic generalization. Finally, on Panax notoginseng precision seeding machine working principle of do in detail.(2) On the JPS-12 computer vision seeding test bench, the performance of the seed metering device is studied. In order to realize the Panax notoginseng sowing precision, designed a roller brush type Panax notoginseng precision seeder. Select the type holes wheel speed, hole diameter and hole depth as experiment factors, qualified index, index of replay and leakage sowing index as evaluation index, using three factors and three level orthogonal design method for metering device test bench. Experimental results show that the better combination type holes wheel speed 20 R/min, hole depth is 7 mm, hole diameter is 8.5 mm, at this time the grain from the qualified index can reach was 93.17, replay index was 3.40, leakage sowing index was 3.43.(3) Design a narrow row spacing furrow opener, and the orthogonal test was carried out using the soil bin, ditching depth and width of ditching the selection of index test, work rate of 0.2 m/s. Based on the analysis of trenching depth is 40 mm, speed respectively 0.2 m/s. Opener work through field test, select 150 points for the measurement data, for ditching depth and width of ditching data for statistical analysis. Get an opener of trenching depth range is between 20 and 30 mm, the average depth of the furrow 24.71mm, standard deviation of $512.8, variance was 26.30, coefficient of variation of 0.208; ditching width range is between 30 and 40 mm, the average width of ditching is 35.74 mm, the standard deviation is 5.565 and variance value is 30.972, coefficient of variation is 0.156. In line with the three seven seeding furrow, and has good performance.(4) In order to improve the planter seeding and the transmission performance, solve seeding went through the midst of the wheel slip rate is more difficult, with walking wheels sowing machine walking wheel design method for design a walking wheel, a width of 100 mm diameter 300mm; walking wheel surface design wheel antiskid thorn, to improve wheel catch ability. Through the test of the bench test of the ground wheel, it can realize the transmission operation. Select the forward rate, soil water content and frame tilt angle as experiment factors, slip ratio and amount of soil adhesion for the response function of the profile structure of the three factor quadratic regression orthogonal rotational combination experiment, profiling mechanism after optimization of parameters, when the soil water content rate of 20%, the inclination angle is between 1-9 degrees, when the rotational speed is between 17-23rpm, the soil adhesion is less than 12g, the slip ratio is less than 15%, and the optimal value range is obtained.(5) Row sowing quantity stability, uniform seeding and row seeding consistency three indicators of the seeder for the performance test. The results showed that:the machine designed to meet the standard operation requirements.In short, this paper studies the driving force of Panax notoginseng seeding machine, in the design of the system, the whole design and other aspects of innovative design, so that the machine has a huge industrial prospects. The equipment will be put into use will greatly reduce the labor intensity of farmers, to fill the gaps in China’s Panax notoginseng precision seeding machinery.