The places where construction machinery is active are mostly mining sites such as mountains and deserts that are far away from ordinary human life, and sometimes even work at 2,000 meters underground. There are many kinds of such machinery, ranging from mineral crushing machinery to cutting machinery, screening machinery, loading machinery, conveying machinery, etc., all of which are continuously operated 24 hours a day. Any failure of any of these machines will greatly affect the production at the mining site, and the recent increase in size of the machines has made maintenance work very difficult.