Anti-blocking electro-hydraulic control system for sugarcane harvester conveying channel

Abstract

The invention discloses an anti-blocking electro-hydraulic control system for a sugarcane harvester conveying channel. The system comprises an electronic control unit and a three-position four-way electromagnetic throttling reversing valve, wherein two hydraulic ports of the three-position four-way electromagnetic throttling reversing valve are correspondingly connected with two hydraulic ports ofa hydraulic motor, and the other two hydraulic ports of the three-position four-way electromagnetic throttling reversing valve are correspondingly connected with a hydraulic source and an oil tank; magnetic steel and a torque sensor are installed on a conveying shaft, and a rotating speed sensor is installed near the magnetic steel; the signal output end of the rotating speed sensor and the signal output end of the torque sensor are connected with the input end of the electronic control unit, and the output end of the electronic control unit is connected with an electromagnetic valve of the three-position four-way electromagnetic throttling reversing valve; and the rotating speed sensor, the torque sensor, the electronic control unit and the electromagnetic valve of the three-position four-way electromagnetic throttling reversing valve are correspondingly connected with a switching power supply so as to obtain a working power supply. According to the anti-blocking electro-hydraulic control system, the running direction of the conveying channel can be automatically controlled according to the torque and the rotating speed of the conveying shaft so that a blockage of the conveying channel can be removed.

Description

technical field [0001] The invention relates to the field of automatic control, in particular to an electro-hydraulic control system for solving the blockage of the conveying channel of a sugarcane harvester. Background technique [0002] Sugarcane is the main sugar crop in China. China's sugarcane production ranks third in the world, and it is one of the world's major sugar producing and consuming countries. The development of the sugarcane industry directly affects the income and life of tens of millions of sugarcane farmers. Therefore, there is a great market application demand for sugarcane harvesters at present. But the sugarcane harvester still has the problem of conveying channel blockage in the process of harvesting sugarcane. The main reason is that due to the hilly terrain of the main sugarcane producing areas in my country, sugarcane tends to roll on slopes. Lodging and bending sugar cane are easy to break and block the logistics channel. Among them, the probl...

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Problems solved by technology

[0003] There are also some sugarcane harvesters that have the function of automatically controlling the reverse conveyance of the conveying channel to achieve the purpose of automatically clearing the blockage. system, but it lacks the control of the conveying speed during reverse conveying, and it only uses the pressure signal as the basis for judging whether the conveying channel is blocked, which is prone to misjudgment

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