Grain cylinder automatic return control device and method for a high-position grain unloading combine harvester

Abstract

The invention provides a grain cylinder automatic return control apparatus and method for a high-height grain discharging combine harvester. The control apparatus comprises a grain discharging mechanism, a control mechanism and a driving mechanism, wherein the grain discharging mechanism is formed by a transverse grain cylinder, a vertical grain cylinder and a discharging port; the control mechanism consists of a logic gate circuit, a position sensor, a master control switch, a handle switch and a power supply; and the driving mechanism is formed by a motor and an oil cylinder; the control mechanism drives the transverse grain cylinder to rotate via the driving mechanism, so the grain discharging port can be adjusted and grain can be discharged and the grain discharging port can return. The invention further provides a grain cylinder automatic return control method for the high-height grain discharging combine harvester. The control method is simple, convenient to operate and can reduce labor work; automatic return and emergent stop and manual operation switch can be achieved by the use of the control method; strong reliability is provided; return time is greatly shortened due to the automatic return function; operation process is simplified and work efficiency is improved; the controller employs the logic gate circuit, thereby being suitable for combine harvesters under bad work conditions; and the control apparatus possesses long service life and high reliability.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery control, and in particular relates to the automatic return technology of a combine harvester for unloading grain at a high position. Background technique [0002] my country is a big agricultural country, and the market demand for grain combine harvesters is very large. Combine harvesters usually have a grain collection and unloading device for collecting and harvesting crops for storage, transportation, and dumping. The grain collection and unloading device is divided into two types: manual unloading and mechanical unloading. At present, one of the necessary conditions for the efficient operation of large and medium-sized grain combine harvesters is to automatically complete the grain unloading operation while the harvester is harvesting, thereby improving the working efficiency of the harvester. [0003] However, most of the existing large and medium-sized grain combine harveste...

AI Technical Summary

Problems solved by technology

Due to the low precision of the grain unloading mechanism, and the delay and hysteresis of human operation, when the manual operation of the grain unloading cylinder returns, it often cannot be in place at one time.

This manual return method of the grain unloading device cannot meet the production needs, and has the disadvantages of many return actions, low precision, and manual adjustment and coordination.

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