The Experimental Study On Refers To The Clip-on Corn Precision Metering Device

Precision seed metering device is the core component of the corn precision seeder, which directly affects the quality of corn seed, is an important link of improving work efficiency. Therefore, how to improve the precision metering device operation efficiency has become a hot topic of discussion of agricultural experts. To solve above problems, combined with the actual situation of HeiLongjiang Province, the metering device based on the theory of home and abroad, the application of agricultural machinery and other related knowledge, an analysis of the theory refers to the clamp type metering device, the optimization design and experimental research. Due to refers to the clamp type metering device is severely affected by the shape, experiments were carried out using the sector large, the sector small, round big and round small of four different kinds of seeds, and contrast analysis of the market in the sale of air suction seed metering device and a spoon of wheel sow performance. The article also investigated the physical properties test four seeds.Research of physical properties of corn seeds provides basic parameter and design basis of seed metering device. By the oven drying method to test the moisture content of corn seed; The density of corn seeds was tested by drainage method; Corn seeds was tested by injecting method of Angle of repose; Through precision balance and caliper measuring corn seeds of three axis dimension,1000 grain weight etc..By means the different state of refers to the clip-on metering device working process and the seed of a performance impact analysis, found that affect the precision metering device seeding performance of working parts mainly metering plate and brush. Using the method of orthogonal experiment optimize the row of kind of tray, the improved brush is mainly used to control the amount of axial movement in the cleaning brush, and then improve the performance of seed metering device.Therefore, the optimal metering plate combination for 2 mm groove depth,13 mm groove wide, convex belt width 2 mm.Then refers to clamp type metering device for the bench test and contrast analysis of the market in the sale of air suction seed metering device and a spoon of wheel sow performance. Get precision metering device performance from good to bad for the air suction seed metering device, refers to the clip-on metering device, spoon wheel device. Refers to the clip-on metering device is more suitable for planting sector large and small seed sector. Refers to the clip-on metering device sow sector large seed, the best speed of 10 km/h, percent of pass, replay rate, replay leakage rate of 81.09%, 12.75%,6.16%; Refers to the clip-on small seed metering device sow sector small seed, best speed is 9.0 km/h, percent of pass, replay rate, replay leakage rate of 81.24%, 11.14%,7.62%; Refers to the clip-on metering device sow round big seed, best speed is 7.5 km/h, percent of pass, replay rate, replay leakage rate of 80.50%, 11.90%,7.60%; Refers to the clip-on metering device sow round small seed, best speed is 7.5 km/h, percent of pass, replay rate, replay leakage rate of 84.72%,8.14%, 7.13%.Due to the field planting and bench test is a big difference, so the using low speed (5km/h) and high speed (8km/h) of refers to the clip-on metering device for field test. Get he speed of 5km/h, percent of pass, replay rate, replay leakage rate of 86.02%,7.24%,6.74%; when the speed of 8km/h, percent of pass, replay rate, replay leakage rate of 82.42%,11.24%,6.34%.