STRUCTURAL DESIGN AND POWER SIMULATION OF TRACKED ELECTRIC TRACTOR BASED ON ECONOMY

In view of the serious pollution of traditional fuel machinery in facility agriculture production, in order to facilitate the operation of tractors in greenhouses, in this study, a small tracked electric tractor suitable for facility agriculture was designed and analysed. In the early stage of design, the basic frame of pure electric tractor was established, the final chassis layout is determined through force analysis and layout setting; after the three-dimensional modeling of the tractor structure, the finite element analysis using the software Ansys verified that the stiffness and strength of the frame met the design requirements; the dual-motor drive structure was optimized. The maximum deformation of the track chassis frame was 0.685 mm, the maximum equivalent elastic strain of the track chassis frame was 0.0131 mm, and the maximum stress of the track chassis frame was 25.818 MPa, which was less than the yield stress of the selected material of the frame. ADVISOR was used to simulate the electric tractor during rotary ploughing and unladen transport operations. The simulation results showed that the dual-motor drive mode saved more than 20% of energy consumption compared with the single-motor mode and the transmission efficiency was improved by about 17%, which improved the operational efficiency of the tractor, and provided theoretical and data support for the subsequent prototype production.