A detection device for the failure of a harvester with a longitudinal axial flow drum

Abstract

The invention discloses a device for detecting the faults of a harvester with a longitudinal axial flow roller. The device comprises an acceleration sensor arranged on the main shaft of the harvester with the longitudinal axial flow roller, wherein the acceleration sensor is connected with a computer through a direct current removal module and a filter in sequence, and the computer is provided with a fault diagnosis module for the harvester with the longitudinal axial flow roller. According to the device, further through the steps and methods related to the device, the problems that in the prior art, diagnosis accuracy is low, and errors are large are solved, and moreover the defect that when blocking happens, in the deceleration and shut-down process, the accuracy of monitored instant rotating speed is too low to meet the request of fault diagnosis is overcome.

Description

technical field [0001] The invention belongs to the technical field of fault diagnosis of harvesters, and in particular relates to a fault detection device for harvesters with longitudinal axial flow drums. Background technique [0002] Over the years, domestically produced full-feed combine harvesters have basically adopted horizontally arranged axial-flow drums to separate from the separation device. This arrangement has a compact structure and better performance when the feed amount is small. Arrangement, limited by the space position, the threshing drum can not be too long, therefore, this type of harvester generally has the following problems: First, because the threshing drum is short, the threshing and separation capabilities are limited, and the entrainment loss will increase when the feeding amount is slightly larger Second, poor adaptability to wet crops and some hard-to-remove crops; third, material distribution on the cleaning screen surface is uneven, and the cl...

AI Technical Summary

Problems solved by technology

[0002] Over the years, domestically produced full-feed combine harvesters have basically adopted horizontally arranged axial-flow drums to separate from the separation device. This arrangement has a compact structure and better performance when the feed amount is small. Arrangement, limited by the space position, the threshing drum can not be too long, therefore, this type of harvester generally has the following problems: First, because the threshing drum is short, the threshing and separation capabilities are limited, and the entrainment loss will increase when the feeding amount is slightly larger Second, poor adaptability to wet crops and some hard-to-remove crops; third, material distribution on the cleaning screen surface is uneven, and the cleaning effect is poor when the feeding amount is large

The literature "Research on Fault Diagnosis Method of Combine Harvester Operation Process Based on PLC" proposes a fault diagnosis method based on the instantaneous change trend of the target signal, and uses the difference equation of the discrete signal of the drum speed to realize the diagnosis and alarm of the threshing drum fault, but these methods generally exist The problem of low diagnostic accuracy and large error, and when blockage occurs, the accuracy of the monitored instantaneous speed is too low during the process of slowing down and stopping, which cannot meet the requirements of fault diagnosis

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