Open AccessOPTIMIZATION DESIGN OF AN AIR-PRESSURE SUBSOILER TYPE
Author(s) -
Hongjie Su,
Hongmei Cui,
Feiyu Li,
Fan Tang
Publication year - 2021
Publication title -
inmateh - agricultural engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.31
H-Index - 9
eISSN - 2068-2239
pISSN - 2068-4215
DOI - 10.35633/inmateh-63-15
Subject(s) - shovel , traction (geology) , lateral earth pressure , geotechnical engineering , environmental science , atmospheric pressure , pulverizer , engineering , geology , mechanical engineering , grinding , oceanography
Through the mechanical analysis of air-pressure subsoiler, it is found that the main factors affecting its tractive resistance are the air pressure injected into the soil, the soil cohesion, the length and width of the shovel surface, the soil disturbance coefficient, and moving speed of the subsoiler. The traditional air-pressure subsoiler was redesigned to solve the problem of large tractive resistance. In the soil trench experiment, the subsoiling shovel’s shape, the air pressure, and the position of air hole were used as test factors, and the ratio of the traction resistance of the shovel to the soil disturbance, namely SDF (Specific Draft Force), was used as the evaluation index. By the response surface test method and analysing the soil disturbance and the tractive resistance, it is determined that rectangular subsoiling shovel with the air hole in the upper part of the shovel is the optimal under the pressure of 1.2 MPa.