Abstract
Aiming at the needs of field operations in different deep mud, a liftable crawler chassis based on the connecting rod arm mechanism was designed, including the chassis upper frame, lifting mechanism, hydraulic cylinder, limit mechanism, left and right walking system. In the ADAMS software, a virtual prototype model of the lifting and lowering chassis is established. The angle variation of the frame on the chassis relative to the ground and the angular velocity and acceleration of each lifting rod were simulated and analyzed. These rules met the chassis lifting adjustment requirements during the harvester operation.
Highlights
China is the world's largest rice producer and consumer, with paddy field and paddy production accounting for 21% and 35% of the world, respectively [1]
The gearbox casing and even the chassis of the crawler combine harvester are trapped in the field, resulting in large forward resistance, high power consumption, low operating efficiency and low work quality [4]
The combine harvester is located at a shallower and less deeply paved road, and when walking on a dry road, the center of gravity of the chassis should be low
Summary
China is the world's largest rice producer and consumer, with paddy field and paddy production accounting for 21% and 35% of the world, respectively [1]. The above chassis has its specific use occasions, and cannot fully meet the requirements of the carrying capacity and adjustment range of the lifting device in the paddy combine harvester in the paddy field. It is necessary to redesign the lifting and lowering device based on the crawler combine harvester and carry out targeted design calculations and simulation analysis. Lift adjustable tracked chassis mechanism design The crawler combine harvester chassis mainly consists of a chassis upper frame, a lifting mechanism, an engine, a cab, and a left and right walking system. The chassis device eliminates the design of the traditional figure-shaped beam, strengthens the structure of the chassis frame, and adds a lifting mechanism between the traveling beam and the frame.
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