WJ1 Underground Internal Combustion LHD is a kind of equipment used in mine roadway excavation in non-explosive environment and shoveling, transportation and unloading of other small tunnel materials; It is mainly used for shoveling, transporting loose materials after blasting and milling, and can also be used in tunnel projects such as railways, highways and water conservancy, especially suitable for short transportation distances, narrow, low and muddy working environments; The rated bucket capacity is 1m³,the rated load is 2 tons, and it is suitable for 2 m×2 m roadways.