Fault diagnosis device for spindle bearing of roadheader cutting head and use method thereof

Abstract

The invention discloses a fault diagnosis device for a spindle bearing of a roadheader cutting head and a use method thereof. The device is characterized in that a central processing unit monitor is connected, via a signal conditioning circuit, with acceleration transducers which are respectively mounted at a front bearing casing and a rear bearing casing of the spindle of the roadheader cutting head. The monitor, an embedded real-time multitask operating system, comprises an original signal vibration amplitude monitor device, a signal feature extraction device and a maintenance guidance module. The use method of the device comprises the steps: vibrating signals of the front and rear bearings of the spindle are online measured to obtain wear-out failure signature spectrum of the spindle bearing, the failure signature spectrum and corresponding maintenance guidance are stored in the monitor; and signal features are extracted by online monitor signals and then compared with the spectrum to analyze diagnosis policy, and maintenance guidance advice in relation to the wear-out failure of the spindle bearing is given. On the premise of overcoming the difficulty problems of large vibration amplitude, adverse working environment and the like of the roadheader cutting head, the device identifies the wear-out failure of the spindle bearing of the roadheader cutting head reliably and is accordingly suitable for the diagnosis of mechanical faults which are widely present in the roadheader cutting head.

Description

technical field [0001] The invention belongs to the technical field of fault diagnosis of mechanical structures, and in particular relates to a fault diagnosis device for a main shaft bearing of a cutting head of a roadheader and a method for using the same. Background technique [0002] At present, with the rapid development of the national economy, the society's demand for energy is expanding day by day. As the main source of energy, the production safety of the coal industry is not optimistic. One of the reasons is that coal mining machinery generally lacks the necessary online safety monitoring and diagnosis system. As far as the roadheader is concerned, its safety depends on the key vulnerable parts of the cutting head main shaft, which is prone to accidents, especially the running state of the cutting head main shaft bearing. Domestic roadheaders have been researched and developed since the 1980s. At present, several series such as EBJ type, EL type, and EBH type have...

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But there is no report on ARM-based cutting head spindle bearing fault diagnosis device for roadheader

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