A Fault Diagnosis Method for Belt Conveyor Roller Assembly
A belt conveyor and fault diagnosis technology, which is applied in the testing of computer components, mechanical components, machine/structural components, etc., can solve the difficulties of early diagnosis of roller faults, the difficulty of effectively collecting the characteristic information of roller faults, and the failure of rollers. Issues such as effective research on component fault diagnosis to achieve the effect of improving efficiency
Inactive Publication Date: 2018-10-19
BEIJING UNIV OF TECH
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Problems solved by technology
However, the working environment of the drum is relatively complicated, and non-contact diagnostic methods such as ultrasound and laser have little effect; and it is difficult to effectively collect the fault characteristic information of the drum running at high speed, which makes the early diagnosis of the drum fault more difficult.
At present, there is no effective research on the fault diagnosis of drum components in China
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[0016] In order to further illustrate the technical means adopted by the present invention to achieve the predetermined purpose, please refer to the following detailed description and drawings of the present invention, but the drawings are only for reference and illustration, and are not used to limit the present invention.
[0017] Such as figure 1 As shown, it is a flowchart of a fault diagnosis method for a belt conveyor roller assembly, including signal acquisition, noise reduction processing, feature parameter extraction, and neural network expert system diagnosis, etc.
[0018] The first step: Use the vibration sensor to collect the vibration signal of the faulty drum assembly. The fault type setting includes the crack fault at the joint between the web plate and the shell, the crack fault of the web plate, the compression deformation fault of the drum surface, the shear fault of the expansion sleeve connecting bolt and Rolling body failure of the inner and outer rings o...
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The invention discloses a fault diagnosis method for a roller assembly of a belt conveyor, which adopts characteristic frequency analysis and a neural network method to diagnose the fault of the roller body and the fault of the bearing assembly. First, the vibration sensor is used to collect the vibration signals of the drum assembly under different fault conditions, and then the EMD threshold method is used to reduce the noise of the vibration signal, and the frequency domain parameters of the noise reduction signal are extracted to analyze the fault characteristic frequency to judge the health status of the bearing assembly. The time-domain parameters constitute the eigenvector as the input parameter of the neural network system, and the neural network expert system uses the training samples for simulation training, and obtains a set of rules to form the neural network expert system diagnosis mechanism, and according to the diagnosis mechanism, based on the extracted eigenvectors. Body fault diagnosis. The method can realize the fault diagnosis of the drum assembly and effectively improve the efficiency of fault diagnosis of the drum assembly.
Description
technical field [0001] The invention relates to the field of belt conveyor fault diagnosis, in particular to a fault diagnosis method for a belt conveyor roller assembly. Background technique [0002] A belt conveyor is a friction driven machine that transports material in a continuous manner. It is mainly composed of frame, conveyor belt, idler roller, roller, tensioning device, transmission device and so on. The roller is the power node of the belt conveyor, and its safety and reliability are directly related to the safety and stability of the entire conveying system. It mainly includes shafts, cylinders, hubs, spoke plates, expansion sleeves, bearing components and other structures. In the actual operation of the belt conveyor, the failure of the roller body and its bearing assembly occurs from time to time, which poses a major threat to the safe operation of the conveying system. [0003] The failure forms of the pulley assembly of the belt conveyor mainly include cra...
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IPC IPC(8): G06N3/04G06K9/00G01M13/00G01M13/04
CPCG01M13/00G01M13/045G06N3/042G06F2218/04G06F2218/12
Inventor 付胜刘坤程磊黄奕铭郑浩
Owner BEIJING UNIV OF TECH