Threshing cylinder and method for adjusting rotating speed of threshing cylinder during threshing

Abstract

The invention discloses a threshing cylinder and a method for adjusting the rotating speed of the threshing cylinder during threshing. The threshing cylinder comprises a rotating shaft and a pluralityof toothed bars installed on the rotating shaft, each toothed bar is provided with a plurality of threshing teeth, and at least one toothed bar is provided with more than one force measuring tooth. The threshing cylinder further comprises a force measuring device used for detecting the material resistance borne by the force measuring teeth, material resistance data reflecting the feeding amount can be obtained through detection, the detection accuracy is high, improvement is easy, and the improvement cost is low. The method for adjusting the rotating speed comprises the steps that the material resistance borne by the force measuring teeth when the threshing cylinder rotates in a threshing device for threshing is obtained through detection, the current feeding amount in the threshing device is obtained, the rotating speed of the threshing cylinder is adjusted to be matched with the current feeding amount, and the feeding amount condition in the threshing device can be accurately obtained. Accurate adjustment of the rotating speed of the threshing cylinder is achieved, then the breakage rate and the incomplete threshing rate are reduced, and the working performance and the threshingeffect of the threshing device are improved.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a threshing drum and a method for adjusting the rotational speed when the threshing drum is used for threshing. Background technique [0002] As one of the core links of crop harvesting, threshing work quality directly affects the overall quality of harvest. At present, foreign countries are vigorously developing adaptive feed rate technology in the threshing process, and have made breakthroughs. However, due to foreign technology blockades, domestic self-adaptive research started late and its application is relatively low. [0003] At present, the main ways of detecting the feeding amount in China are: (1) estimating the feeding amount by detecting the grain flow rate; (2) predicting the feeding amount by detecting the power consumption of the main threshing components; (3) combining (1) and The method of (2) is fused to predict the feeding amount; (4) The feedin...

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Problems solved by technology

However, the above detection method is to measure the feeding amount by detecting the relevant parameters of the device before the threshing device, and the value of the feeding amount is indirectly calculated by detecting the relevant parameters of other working parts. Due to the shape of the grain and the order of laying The state of the parameters in the threshing device is different from the state before the threshing device, so there is a large error between the detected crop feeding amount and the actual grain feeding amount in the threshing device. The feeding amount obtained by the system based on these detection methods Adjust the working parameters of the threshing device, and the adjusted working parameters of the threshing device have a large error with the actual working parameters that should be selected, resulting in a large broken rate and unremoved rate, which reduces the working performance and threshing effect

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