Lv, Y; Feng, J; Wang, G and Li, H (2024) Stability characteristics and experiment of hydraulic drive four-wheel chassis. Journal of Engineering, Design and Technology, 22(2), pp. 598-612. ISSN 1726-0531
Abstract
Purpose: This study aims to improve the maneuverability and stability of four-wheel chassis in a small paddy field; a front axle swing steering four-wheel chassis with optimal steering is designed. Design/methodology/approach: When turning, the front inner wheel stops and the rear inner wheel is in the following state. The hydraulic drive system of the walking wheel adopts a driving mode in which two front-wheel motors are connected in series and two rear wheel motors in parallel. The chassis uses a combination of a gasoline engine with a water cooling system, a CVT continuously variable transmission and a hydraulic drive system to increase the control capability. The front axle rotary chassis adopts a step-less variable speed engine and a hydraulic control system to solve the hydraulic stability of the chassis in uphill and downhill conditions so as to effectively control the over-speed of the wheel-side drive motors. Through the quadratic orthogonal rotation combination design test, the mathematical models of uphill and downhill front-wheel pressures and test factors are established. Findings: The results show that the chassis stability is optimal when the back pressure is 0.5 MPa, and the rotating slope is 4°. The uphill and downhill pressures of the front wheels are 2.38 MPa and 1.5 MPa, respectively. Originality/value: The influence of external changes on the pressure of hydraulic motors is studied through experiments, which lays the foundation for further research.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | experimental investigation; four-wheel drive chassis; stability characteristic; swing-steering |
| Index terms: | cooling system, hydraulic, investigation, methodology, control system, stability, experiment, slope, mathematical model |
| Subjects: | data collection methods, mechanical systems, mathematical modelling, fluid mechanics, monitoring and control, structural engineering, research methods, geotechnical engineering |
| Topics: | Business Strategy, Research Practice, Engineering Principles |
| Descriptive scope: | 5 PCTEA |
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