Intelligent electro-hydraulic lifting control device and intelligent electro-hydraulic lifting control method for paddy field agricultural machine

Abstract

The invention discloses an intelligent electro-hydraulic lifting control device for a paddy field agricultural machine. The intelligent electro-hydraulic lifting control device comprises a detection module, a control module and an execution module. The control module makes an action judgment according to agricultural machine information acquired by the detection module and sends a signal. The execution module controls automatic lifting, lowering and leveling of agricultural implements. The detection module comprises an automatic driving controller, a wheel speed sensor, a body tilt angle sensor and a leveling cylinder displacement sensor. The control module comprises an electro-hydraulic lifting controller. The execution module comprises an electro-hydraulic lifting control valve, a pump,a hydraulic cylinder and a three-point suspension, and is used for executing instructions sent by the control module to control movement of the agricultural implements. The agricultural machine information includes a straight travelling signal, a turning and reversing signal and an agricultural implement leveling signal. The invention further discloses an intelligent electro-hydraulic lifting control method for the paddy field agricultural machine. Straight travelling of the paddy field agricultural machine, the tilling depth of the agricultural implements during turning and reversing, and automatic leveling of the agricultural implements in a paddy field can be controlled.

Description

technical field [0001] The invention relates to the field of agricultural machinery, in particular to an intelligent electro-hydraulic lifting control device and method for paddy field agricultural machinery. Background technique [0002] Most of the existing three-point suspension devices of tractors and agricultural implements are mechanical and manual operations, which have the following three problems: [0003] The first point: tractors operate in a straight line in paddy fields, and the slip rate is difficult to control so that traction efficiency and fuel economy control cannot be achieved; [0004] The second point: tractor paddy field operation until the field head turns around, it is necessary to manually control the lifting and lowering of agricultural machinery, such repeated operations seriously affect work efficiency and increase labor intensity; [0005] The third point: when tractor works in paddy fields, the left and right inclination angle of agricultural i...

AI Technical Summary

Problems solved by technology

[0003] The first point: tractors operate in a straight line in paddy fields, and the slip rate is difficult to control so that traction efficiency and fuel economy control cannot be achieved;

[0004] The second point: tractor paddy field operation until the field head turns around, it is necessary to manually control the lifting and lowering of agricultural machinery, such repeated operations seriously affect work efficiency and increase labor intensity;

[0005] The third point: tractor paddy field operation, the left and right inclination angle of agricultural machinery depends entirely on the vehicle body, and it is impossible to achieve leveling control on agricultural machinery alone, so that it is difficult to achieve the purpose of leveling paddy fields

[0006] The existing patent No. 201710004337.3 is an adaptive lifting device and control method for tractor electro-hydraulic suspension field heads. The technical point of this patent is to judge the U-turn steering by the wheel speed difference of the angle sensor 103 and the wheel speed sensors 106 and 107. The start and end times are judged by the angle sensor and the wheel speed difference between the wheel speed sensors on both sides to determine the start and end of the U-turn. This patent requires the use of two wheel speed sensors, which has problems of complex structure and calculation

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