Design of soybean header suitable for single-film harvesting in Xinjiang and analysis of grain-sweeping process
Based on Xinjiang's soybean film-covered drip irrigation cultivation technology,a soybean cutting table with relief detection device was designed.Through field growth characteristics measurement,the parameters of a reel with a main shaft length of 2 000 mm and a diameter of 650 mm suitable for harvesting single-film soybeans in Xinjiang were determined.A front-wheeled terrain detection device was designed and installed on both sides of the soybean cutting table.The relationship between the angular momentum of the detection device and the height of the cutter from the ground was determined as follows:H=80-Δh=80-320(sinθ-sinθ′).The ground fluctua-tion test was carried out on the designed soybean cutting table,and the mean relative error between the actual dis-tance and the detection distance was 0.037～0.039.The working principle of the plucking wheel was analyzed,and the range of the plucking speed ratio was examined.The three-dimensional model of the wheel was introduced into Adams software to analyze the trajectory of the spring teeth under different speed ratios.It was found that the wheel had no effect when the speed ratio λ≤1.0 but had an effect when λ＞1.0.However,when the speed ratio became too large,an overlapping area appeared between adjacent spring teeth.The designed soybean header proved benefi-cial for the single-film harvesting of soybeans in Xinjiang.Additionally,the terrain detection device is expected to provide a basis for real-time adjustments to the soybean header's height.
万方数据
维普
