Investigation of energy and performance indicators of potato digger work with experimental digging-separating operating part
2022
Bulgakov, Volodymyr | Ivanovs, Semjons | Kornuchin, Viktor | Ruzhylo, Zinoviy | Ihnatiev, Yevhen | Chernovol, Mykhailo | Kaminska, Valentyna
Potato harvesting is the most labour-intensive technological process in the potato production, which accounts for 45...60% of the total labour costs. When working in difficult conditions, the potato harvesters have insufficiently high quality indicators, low reliability and high energy performance. The purpose of this work is to determine the energy and performance indicators of a two-row potato digger-loader KKN-2 with an experimental V-shaped heap distributor. The test conditions were typical for heavy soils; the soil hardness in the tuber layer was up to 3.0 MPa. The performance indicators were determined at operating speeds of 3.2...4.8 km•hE−1. The obtained dependences of the traction resistance upon the forward speed of the potato harvester for the basic and the modernized machines show that at the speeds above 3.55 km•hE−1 the resistance of the modernized machine is lower. This can be explained by a better separation of the heap and, as a result, a decrease in its total mass, which is in the cleaning system. The use of the proposed combined digging-separating operating part in the technological scheme of the potato harvester provides higher operational and energy performance: it increases the productivity by 0.16 ha•hE−1 and reduces the specific fuel consumption by 4.1 kg•haE−1.
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