关键词: 喷雾机；高地隙底盘；轮距可调；驱动桥；静强度

Abstract:

In order to ensure the reliability of high-clearance sprayer chassis, directing at a high-clearance and wheel-track adjustable chassis of a self-propelled sprayer, three-dimensional model of its drive axle was built. Finite element analysis (FEA) on its static structure strength was carried out by ANSYS software. Then, a test was designed and the test verification was carried out on these results, it was found that the results of both test measurement and static strength analysis were coincidence. Meanwhile, these results also showed that section size and tube thickness had obvious effect on the static strength of drive axle, and drive axle with section size of 180 mm×130 mm and tube thickness of 15 mm were sufficient to satisfy the requirement for chassis structure strength of a high-clearance sprayer. The maximum equivalent stress and total deformation increased form 159.7 MPa to 285.17 MPa, and from 1.04 mm to 2.52 mm, respectively. In a word, the research findings provided thearetical basis and data support for ensuring the reliability of high-clearance chassis drive axle strength within the wheel-track adjustable scope, and for satisfying the requirement raised within deformation range.

Key words: sprayer, high-clearance chassis, wheel-track adjustable, drive axle, static strength