Research on drag reduction mechanism of pneumatic subsoiler and establishment of resistance mathematical model

Abstract

According at the characteristics of large subsoiling resistance and small subsoiling range, a pneumatic subsoiling mechanism was designed to disturb the soil with different air pressure. To achieve the purpose of pneumatic subsoiling, first, the aerodynamic model of subsoiling was established, and then the feasibility of the design was verified by experiments. Using the dynamic telemetry data of the sensor, the effects of tillage depth (25, 30, and 35 cm), pressure (4, 6, and 8 MPa), and working speed (2.5, 3.0 and 3.5 km·h−1) on traction resistance were analyzed. The test results showed that under the condition pneumatic subsoiling, the traction resistance was reduced by 7.28%–22.37%, and the soil disturbance coefficient was 55.49%. The effect of pneumatic subsoiling showed that it has met the design requirements. Pneumatic subsoiling not only improved the problem of small stress of traditional subsoiling but also increased the disturbance of gas to soil on the basis of traditional subsoiling, so as to achieve the effect of subsoiling and reducing resistance and consumption.

A Study of a Model for Predicting Pneumatic Subsoiling Resistance Based on Machine Learning Techniques

“…The research object of this study was a pneumatic subsoiler. Pneumatic subsoiling impacts the soil through the air explosion jet, reducing the friction between the subsoiling shovel and the soil and assisting the subsoiling operation, which can effectively break the plow pan [12]. Han et al simulated and analyzed the reinforcement mechanism of high-pressure gas on the soft soil foundation through soil trough tests [13].…”

Self-Excited-Resonance of Soil-Engaging Surface Spectrum: A New Method of Soil Cutting Resistance Reduction

“…The reduction of working resistance and energy consumption in the soil cutting process is of great significance. In all the researches and applications of resistance reduction designs of various soil cutting tools, various methods have been tried and applied, such as geometric structure modification of soil cutting tools [5,6], material modification [7,8], soil-engaging interface lubrication [9], bionic design [10,11], vibration technology [12,13] and others. Among them, vibration technology has achieved better effects on resistance reduction and soil loosening on specific soil cutting conditions.…”