Driven by flameproof diesel machine, complete chassis, mechanical transmission, hydraulic assisted mechanical steering, rear two wheel drive, self-unloading carriage body. It is mainly applied in the transportation in the underground lanes with the section is not less than 3.2.7m. gradient is not more than 16 degrees. It is with the characteristics such as compact structure, simple operation, small turning radius, good climbing ability, low pollution, as well as high efficiency.