A high-throughput threshing and cleaning device for ratooning rice combine harvester

Abstract

The invention provides a high-throughput threshing and cleaning device for a ratooning rice combine harvester, including a threshing device, a cleaning device, a double re-removal device for residual augers, a corrugated punching-grid concave plate sieve and a shutter-fish scale cleaning device. Screening; corrugated punching-grid concave screen and shutter-fish scale cleaning screen are provided between the threshing device and the cleaning device, and the corrugated punching-grid concave screen is located at the bottom of the threshing device; The louver-scale cleaning screen is located directly below the corrugated punching-grid concave plate sieve, and the waste auger double re-removal device is located below the louver-scale cleaning sieve, which is used to separate the grain from the waste The remaining mixture is re-transported to the shutter-scale cleaning screen for screening. The invention satisfies the high-efficiency threshing and high-throughput cleaning requirements of the small grass valley than the first-season ratooned rice during high stubble operation, and has high cleaning rate, low crushing rate, low loss rate and low impurity content rate.

Description

technical field [0001] The invention relates to the technical field of agricultural equipment, in particular to a high-throughput threshing and cleaning device for a ratooning rice combine harvester. Background technique [0002] The ratooning rice is a rice variety that uses the dormant buds that survive on the rice pile after harvesting to make it mature again after heading. The advantages of saving species. At present, in double-cropping rice areas where there is excess heat in one season but insufficient heat in two seasons, and only one season of mid-season rice is planted, ratooning rice planting has become a planting system that increases the total rice output by increasing the multiple cropping index. Compared with conventional rice, the first-season harvest of ratooning rice has agronomic requirements such as high stubble retention and low rolling. [0003] The threshing and cleaning device is an important core component of the combine harvester, and its threshing...

AI Technical Summary

Problems solved by technology

At present, the ratooned rice harvesters are mainly small harvesters, which limit the space of the cleaning device, and with the continuous increase of the feeding amount, the materials in the limited cleaning space have no time to stratify and disperse, and due to the The grain content in the ratooning rice extract is large, and the rest is mainly broken ears and stems and leaves, which cannot be quickly and evenly distributed through the sieve, which will easily lead to local accumulation on the sieve surface

Therefore, the traditional rice combine harvester threshing and cleaning device can no longer meet the high-efficiency harvesting requirements of Xiaocaogu compared with the first-season ratooned rice. This requires the invention of a ratooned rice with good threshing and separation ability and high-efficiency cleaning. High throughput threshing and cleaning device for combine harvester

[0005] A kind of threshing cleaning conveying device in the prior art, the bottom and back of the threshing drum are wrapped side by side by the front concave screen and the rear concave screen, and the prolapsed matter is transported to the cleaning screen by the conveyor belt arranged obliquely under the threshing drum It can realize grain grading, impurity removal and filtration, but for crops with large grain content, it is difficult to achieve rapid sieving, and it is easy to cause unsmooth discharge of grass caused by excessive discharge of grass in the threshing cylinder. Cleaning screen clogging and other problems

A threshing and cleaning device for a longitudinal axial flow combine harvester in the prior art enhances the threshing and separation ability of materials by setting a threshing section, a separation section, and a grass discharge section on the threshing drum body, but for the first season of small grass-to-grain ratio Ragnaring rice, where it is difficult to ensure the integrity of the stalk during the flow of the threshing drum, increasing the load on the cleaning operation

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