Construction machinery is active in mountainous and desert areas and other mining sites far away from human life, sometimes even working in the underground 2000 meters. There are many kinds of this kind of machinery, from mineral crushing machinery to cutting machinery, screening machinery, loading machinery, conveying machinery, etc., are 24 hours a day continuous operation of equipment. The failure of any of these machines will have a great impact on the production of the mining site, and due to the recent large scale of machinery, maintenance operations have become very difficult.