The invention belongs to the technical field of design and manufacturing of
coal mine underground auxiliary transportation equipment, solves the technical problems that in the
coal mine transportation field, no traction engine capable of realizing trackless or tracked reloading is provided, and unidirectional driving is not conducive to health and
safe driving, and provides an explosion-proof
diesel engine road-rail vehicle for a
coal mine underground roadway. The road-rail vehicle comprises a
carriage, a main cab, a vice cab, front wheels, rear wheels, a frame, suspensions, transmission shafts, a
transfer case, drive axles, a
clutch, a hydraulic
oil tank, a
fuel tank, a
waste gas treatment tank, a feed water tank, an
air filter, a gas tank, a
diesel engine, a hydraulic mechanism, a pneumatic mechanism, wheeltrack guiding devices, a quick change-over device and traction connection devices. The road-rail vehicle is provided with a
mode switching system, so that the switching of a trackless working mode and a tracked working mode can be realized; four-wheel driving and bidirectional driving are adopted; and the road-rail vehicle is reasonable in design, compact in structure, small size, strong in climbing ability, and flexible, can shuttle in a narrow coal mine underground roadway, and freely and conveniently run forwards and backwards.