A control device for tractor three-degree-of-freedom agricultural implement suspension mechanism

Abstract

The invention relates to a control device of a three degree-of-freedom farm tool suspension mechanism of a tractor. The device comprises a controller, a hydraulic cylinder, a displacement sensor builtin the hydraulic cylinder, an angle sensor, a solenoid directional valve, a hydraulic pump, a farm tool position heeling and pitching control algorithm module and the like, wherein the controller isarranged on an instrument desk, and connected with the angle sensor, the built-in displacement sensor, the solenoid directional valve and the hydraulic pump through signal lines respectively; the farmtool position heeling and pitching control algorithm module is used for controlling the farm tool terrain clearance, farm tool heeling angle and farm tool pitching angle. The control device of the three degree-of-freedom farm tool suspension mechanism of the tractor has the advantages that the position, heeling angle and pitching angle of farm tools can be controlled according to the actual farming environment and farming requirements, the operation can save labor, and the device saves energy and is environmentally friendly.

Description

technical field [0001] The invention relates to agricultural machinery, in particular to a control device for a tractor three-degree-of-freedom farm tool suspension mechanism. Background technique [0002] In China, the land area of ​​hills accounts for more than 43% of the country, the population accounts for more than 50% of the country, the cultivated land area accounts for 31.5% of the country, and the grain output accounts for 35.5% of the country (2011). The production base of crops occupies a very important position in China's agricultural production. Compared with the high level of agricultural mechanization in China's vast plains, the level of agricultural mechanization in hilly and mountainous areas is still very low, which has become a bottleneck for the full realization of agricultural mechanization in China. The reasons for the low level of agricultural mechanization in hilly areas include the low level of agricultural machinery operations in hilly areas and ha...

AI Technical Summary

Problems solved by technology

Because in the traditional three-point suspension rod, the agricultural implement has a degree of freedom of rotation around the drive axle and another degree of freedom is the degree of freedom of the horizontal swing of the agricultural implement around the vertical direction, the lifting arm can only control the degree of freedom of rotation around the drive axle ( This degree of freedom can control the height and position of the farm tool), but cannot limit the freedom of the lateral swing of the farm tool; when the farm tool is working on a slope, the gravity of the farm tool will cause the farm tool to swing laterally, which will lead to the partial traction phenomenon of the farm tool during farming, which affects the tractor farm tool group. Straight line travel and safety for slope operations

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