| Design and test of precision rotary\|ridging machine for sticky soil |
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| DOI：10.7606/j.issn.1000-7601.2022.02.30 |
| Key Words: precision rotary\|ridging machine sticky soil ridge planting rotary tillage broken soil field test |
| Author Name | Affiliation | | ZHANG Tao | Institute of Agricultural Machinery Research, Chongqing Academy of Agricultural Sciences, Chongqing 401329, China | | LI Ying | Institute of Agricultural Machinery Research, Chongqing Academy of Agricultural Sciences, Chongqing 401329, China | | ZHANG Xiaochun | Institute of Characteristic Crops Research, Chongqing Academy of Agricultural Sciences, Chongqing 402160, China | | WEI Ling | Institute of Characteristic Crops Research, Chongqing Academy of Agricultural Sciences, Chongqing 402160, China | | PANG Youlun | Institute of Agricultural Machinery Research, Chongqing Academy of Agricultural Sciences, Chongqing 401329, China | | LI Ping | Institute of Agricultural Machinery Research, Chongqing Academy of Agricultural Sciences, Chongqing 401329, China | | TANG Xinglong | Institute of Agricultural Machinery Research, Chongqing Academy of Agricultural Sciences, Chongqing 401329, China | | ZHOU Yuhua | Institute of Agricultural Machinery Research, Chongqing Academy of Agricultural Sciences, Chongqing 401329, China |
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| Abstract: |
| To improve the topsoil structure and address the problem with heavily consolidated and highly tillage and ridging resistance in southwest China hilly area, the precision rotary\|ridging machine was developed. It was mainly composed of deep rotation device, soil crushing device and ridge forming parts, which could realize combined operations such as rotary tillage, soil crushing and ridge raising. The deep rotating device adopted the double helix method to install the rotary blade alternately. The rotary blade interval was 60 mm and rotating speed was 260 r·min-1. In the soil crushing device, the earth cutter was installed symmetrically with the cutter plate as the center. Three pieces of each side were obtained through analysis. The clearance of the cutter tip was 32 mm, and the rotating speed of the earth cutter was 430 r·min-1. The model of soil cross section and the path of soil cutter movement in the process of operation were established. According to agronomic requirements, the ridge components were designed into trapezoidal box structure with front width and back narrow, upper narrow and below width, and the ridge cover length was determined to be 300 mm by analysis. The results of field tests showed that the average stability coefficients of ridge width, ridge height and furrow width were 96.26%, 93.34% and 89.09%, respectively, under the condition that the previous crop was rice or rapeseed and the ridges were full without high or low ridge, wide or narrow ridge. The surface flatness, soil fragmentation rate and vegetation coverage rate were 2.06 cm, 92.32% and 85.32%, respectively. All indexes were in line with industry standards and design requirements. After operation, soil bulk density and water content decreased by 14.31% and 11.25%, respectively, which improved soil structure and permeability. |
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