The WJ3 underground internal combustion scraper has a bucket capacity of 3.5m³ and a rated load of 7t. It meets the requirements of mine safety certification and is suitable for scraping, transporting and unloading materials in non-explosive environment mine tunnels and other small tunnels, and can meet the requirements of loading ore trucks of up to 20t in the underground mining process. ​The machine has a high level of protection and is suitable for wet and dusty environments in underground mine tunnels of 3.5m x 3.5m. The machine is highly intelligent, safe and reliable to use and has good overall machine stability, which can significantly improve mine productivity and profitability.