Steering system of a rice transplanter and its control method

Abstract

The invention relates to a steering system of a rice transplanter. The steering system comprises a hydraulic system and a steering control system, wherein the hydraulic system comprises a power element, executing elements, and a control element; the power source is an engine; the power element of the hydraulic system is a hydraulic pump; the executing elements are four single-acting hydraulic cylinders which are separately mounted on the inner side of each of four wheels, and can separately control the rotating angle of the four wheels; the control element comprises three-position four-way electromagnetic proportion reversing valves, and the three-position four-way electromagnetic proportion reversing valves control the size of an electric current of a ratio electromagnet of each of the three-position four-way electromagnetic proportion reversing valves so as to adjust the opening degree of the corresponding reversing valve in a stepless manner; the steering control system mainly comprises a central controller and angle sensors, wherein the angle of a corresponding wheel and the flow direction of oil fluid of the hydraulic system are adjusted by the central controller according to a selected steering mode, and relationships between every two steering angles of the each of the wheels are calculated according to the different steering modes; and the angle sensors are separately mounted on the inner side of the corresponding wheel, and during steering, the steering angles of the wheels are measured by the corresponding angle sensor, and are fed back to the central controller to eliminate deviation of the steering angles continuously.

Description

technical field [0001] The invention relates to a rice transplanter steering system and a control method thereof, belonging to the technical field of rice transplanter steering control. Background technique [0002] In recent years, my country has become the world's largest producer and user of agricultural equipment, but the situation that agricultural machinery products are "big but not strong" is widespread. With the implementation of the country's "13th Five-Year Plan", hydraulic technology is gradually being used in agricultural machinery In the field of equipment, agricultural machinery is also gradually developing towards automation and intelligence. At the same time, rice is one of the most important grains in my country. In 2015, China's rice planting area was about 30 million hectares, accounting for 30% of China's total grain crop area and 20% of the world's rice planting area. Food supply and ensuring national food security are of great significance. [0003] Ric...

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problems such as circuitous and narrow paddy field roads, inconvenient turning of rice transplanters, and easy rolling of paddy fields after rice transplanting when turning, and provide a simple and compact structure, light and reasonable steering, variable steering mode, small turning radius A new type of hydraulic steering mechanism and its control method that is easy to realize automation and intelligence, and can meet the normal operation and driving of high-speed rice transplanters in paddy fields and roads

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