Special grinder machine for steel rail

The utility model discloses a special grinder machine for a steel rail. The utility model aims to overcome the disadvantages in the prior art that the flatness of welded junction can not be controlled easily when the steel rail is ground with a hand grinder by a person; the oscillation and the noise are high when a trolley runs on the steel rail; the service life of mechanical equipment is affected; the environment is polluted; and the labor intensity of a worker is high. The special grinder machine comprises a frame, a motor and a grinding wheel, wherein, the motor is installed on the frame, and the grinding wheel is driven to rotate by the motor; and wheels which can drive the frame to run along the polished steel rail are installed at the lower part of the frame. Because the grinding wheel can grind the butt-welded seams of the steel rail when the wheels installed on the frame run along the steel rail, the problems of poor flatness due to manual grinding with a hand grinder and high labor intensity are sol