Xue Guanghui

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Vibrating screen is the one of key equipments in coal preparation industry. It is difficult of acquisition of condition signal and feature extraction of crack fault because of the structure features of the vibrating screen lower beam. So there is no effective method to diagnose the crack fault of the vibrating screen lower beam at home and abroad. This(More)
The purpose of this study is to detect the cracks of the banana vibration screen beam by wavelet transform. A single-cracked beam with single crack is evaluated by means of discrete wavelet packet transform in the present research, in which wavelet transforms are employed to detect the cracks on the beam. The experimental results reveal that the proposed(More)
According to the statistics, roof and side fall accidents often occur and jeopardize greatly in coal mines. The variation of the strain and stress in the surrounding rocks of the mine roadway can predict the accident. How to obtain the strain and stress is the key point of the prediction. This paper provides a method on the case. Firstly the principle of(More)
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