Internal combustion dual purpose steel rail drilling machine

The utility model discloses an explosive dual-purpose rail drilling machine, which is composed of a gasoline engine, a reduction gearbox, a feeding mechanism and a clamping assembly, wherein both the reduction gearbox and the feeding mechanism are connected with the principal shaft, one end of which is provided with a female cone. A hollow boring bit and drillstock assembly is mounted at the female cone. The drillstock assembly comprises a drill bush whose one end is provided with a blind hole and a spring is arranged inside the bind hole. One end of the spring is connected with the tail of a thimble. A hollow boring bit is fixed at the port of the blind hole and the thimble passes through the centre hole of the hollow boring bit. The rail drilling machine uses the hollow boring bit to drill on rail with high degree of hardness, while when the rail is of low degree of hardness, the boring bit can be conveniently changed with a standard twist bit. The utility model is economical and durable, and sharpening is convenient, thus the utility model is an efficient railroad maintenance equipment with good quality.