Sugarcane harvester and front suspension header root cutting depth control device and method thereof

Abstract

The invention relates to a sugarcane harvester and a front suspension header root cutting depth control device and method thereof, The sugarcane harvester comprises the front suspension header root cutting depth control device. The device comprises a contour wheel, a hydraulic electric control proportional valve and an automatic root cutting depth adjusting controller, wherein the contour wheel is connected with a left sugarcane lifter and a right sugarcane lifter and is provided with a rotation angle sensor so as to measure a contour wheel parameter theta, the hydraulic electric control proportional valve is connected with a sugarcane lifter lifting oil cylinder, a front suspension header lifting oil cylinder, a sugarcane section cutting hydraulic motor and a sugarcane root cutting hydraulic motor, and a pressure sensor and a flow sensor are mounted on the hydraulic electric control proportional valve so as to measure a power consumption parameter N of the root cutting motor; and the automatic root cutting depth adjusting controller is connected with the rotation angle sensor and the hydraulic electric control proportional valve to receive the contour wheel parameter theta and the power consumption parameter N of the root cutting motor, and controls the sugarcane lifter lifting oil cylinder and the front suspension header lifting oil cylinder to adjust lifting of the left sugarcane lifter, the right sugarcane lifter and the front suspension header through a PID fuzzy control algorithm, so that the automatic adjustment and control of the sugarcane root cutting depth are realized. The invention further provides the sugarcane root cutting depth control method of the device.

Description

technical field [0001] The invention relates to a sugarcane harvester, in particular to a sugarcane harvester and a device and method for controlling the undercutting depth of the front suspension header. Background technique [0002] Sugarcane is one of the main sugar crops in the world, and the average annual planting area of ​​sugarcane in the world is about 22 million hectares. Among them, they are mainly distributed in countries such as Brazil, India, China, Cuba and Australia. my country's sugarcane planting area is about 1.7 million hectares, mainly distributed in Guangxi, Yunnan and Guangdong provinces. There are three basic methods of sugarcane harvesting: whole stalk harvesting, segmental harvesting and segmental harvesting. In Australia, the United States and other countries that have realized full-scale mechanization, the mainstream model for sugarcane harvesting is a large-scale cutting combine harvester. At present, the sugarcane harvesters used in the main ...

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Problems solved by technology

[0003] Sugarcane combine harvesters are divided into whole-stalk sugarcane combine harvesters and section-cutting combine harvesters. The harvesting process of whole-stalk sugarcane combine harvesters is generally: branch cane support—root cutting—feeding—whole stalk conveying— —leaf stripping—cane collection; section-cut combine harvester harvesting process is generally: branch support cane—root cutting—feeding—whole stalk conveying—cutting—dumping—collecting cane conveying, or Supporting cane—root cutting—cutting—conveying—discharging—collecting cane conveying; the common feature of the whole stalk type and the cutting type combine harvester is that the root is cut at the front of the combine harvester, and the sugarcane harvester The quality of root cutting is an important indicator of harvesting performance. Sugarcane is a perennial root crop. The quality of root cutting directly affects the degree of root breaking and the density and yield of sugarcane growing plants in the next year. Cutting within 5cm into the soil, practice has proved that cutting within 5cm into the soil improves the cutting quality of perennial roots and the growth rate of perennial roots in the next year, and greatly reduces the loss of sugarcane root cutting; the whole stalk type and section type sugarcane combine harvesters currently used in China , There are two main ways to control the undercutting height: one is when the sugarcane combine harvester is working, the driver of the harvester lowers the header to a certain level for harvesting according to years of driving experience, and in the process of continuous operation according to the judgment of the driver The height of the cutting table should be adjusted appropriately due to terrain changes and machine load conditions. This method is greatly affected by human factors and land terrain changes, and the quality of sugarcane root cutting cannot be guaranteed stably; the other is imported large-scale cutting sugarcane harvesters. The depth of sugarcane undercutting is automatically adjusted and controlled according to the power consumption of the undercutting motor (or the pressure of the oil circuit). When the sugarcane growth density is relatively balanced and the planting land is relatively flat, the sugarcane undercutting quality is better, but the sugarcane growth density The root cutting quality of sugarcane will deteriorate when the planting land is uneven and the terrain changes greatly. However, the main sugarcane production areas in China are mainly concentrated in Guangxi, Yunnan, Guangdong and other places. Most of the planting land is hilly and mountainous. The variation is large, and about 70% are ratoon cane, and the growth density is uneven

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