Adaptive cleaning grain harvester

Abstract

The invention relates to an adaptive cleaning grain harvester, and belongs to the technical field of agricultural machinery. The adaptive cleaning grain harvester comprises travel chassis and a control circuit. The travel chassis is provided with a main header, a threshing and separating device, a grain cleaning device and a cereal collecting and unloading device, and the threshing and separatingdevice is connected with the main header by a feeding and conveying device. A front hinge bracket and a rear hinge bracket are fixedly connected with a grooved body of a vibrating sieve of the grain cleaning device; sieve plates are hinged to positions between the front hinge bracket and the rear hinge bracket, one of the front hinge bracket and the rear hinge bracket is hinged to one end of an electric control telescopic device, and the other end of the electric control telescopic device is hinged to a side of each sieve plate; a fan is provided with rotational speed regulation links; sensorsinclude left, right, front and rear inclination angle sensors, telescopic distance sensors and rotational speed sensors, and signal output ends of the various sensors are connected with the electriccontrol telescopic device and controlled ends of the rotational speed regulation links of the fans by the control circuit. The adaptive cleaning grain harvester has the advantages that even grains onparcels of rice fields with different slope gradients can be harvested by the adaptive cleaning grain harvester, and the grain harvesting operation efficiency and quality can be guaranteed.

Description

technical field [0001] The invention relates to a cleaning grain harvester of a grain harvester, in particular to an self-adaptive cleaning grain harvester and a corresponding cleaning method, belonging to the technical field of agricultural machinery. Background technique [0002] The grain harvester is a commonly used harvesting machine for large-scale agricultural production at present. Its typical structure is disclosed in the Chinese patent document with application number 201410080572.5. It contains a header mainly composed of a reel and a cutting device. The device is connected with a threshing and separating device mainly composed of a threshing drum and a concave screen. A grain cleaning device is installed under the concave screen of the threshing and separating device. The output end of the grain cleaning device is connected with the grain unloading device through a conveying mechanism. . [0003] Both practical and theoretical studies have shown that the harvest...

AI Technical Summary

Problems solved by technology

However, when crops are harvested in hilly areas, due to the poor flatness of cultivated land and many slope fields, the existing grain harvesters have the problem of significantly increased cleaning losses

Because, under the action of the harvested grain's own weight, when the body of the combine harvester tilts left and right, the vibrating screen will tilt left and right accordingly, resulting in the accumulation of materials to one side

When the harvester is working on a downhill field, the material will accumulate towards the front of the sieve, making it difficult for the sieve to perform normal screening; when the harvester is working on an uphill field, the material will easily slip behind the sieve quick discharge

As a result, the loss of cleaning will increase due to the inability to ensure normal and sufficient screening.

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