Design and Experiment of Row Cleaner with Staggered Disc Teeth for No-Till Planter

Abstract

In view of the large amount of wheat straw coverage and the difficulty with the high-speed working process used in traditional rotary tillage row cleaner. A row cleaner with staggered disc teeth for no-till planting was designed. It was determined that installation with a forward inclination α, horizontal declination β, and forward speed v0 of the machine were the main factors affecting the straw cleaning rate Y1 and working resistance Y2, and the range of values for structural parameters and motion parameters of the row cleaner were determined. Taking α, β, and v0 as the factors and Y1 and Y2 as the response indexes, using EDEM 2018 software to simulate the straw cleaning process under different parameters and determine the influence of each parameter on the straw cleaning performance. After performing a soil bin test, the results showed that there was no straw entanglement and blockage, and the passability was better than that of the traditional flat disc separated row cleaner. When α was 70°, β was 30°, v0 was 8 km/h, and the embedded depth h of the soil (straw) was 55 mm, the average straw cleaning rate was the highest, which was 90.59%. This study provides a new idea for the design of high-speed corn no-till planters in the Huang-Huai-Hai area of China.

Keywords

• no-till sowing
• row cleaners
• straw mulching
• straw cleaning discs
• seedbed cleaning
• discrete element