Drilling machine for coal mining

The drilling machine comprises two sets of brake rollers, the tops of the two sets of brake rollers are fixedly connected with a bottom plate, the right side of the top of the bottom plate is fixedly connected with a pushing handle, the left side of the pushing handle is provided with a water storage tank, the left side of the top of the water storage tank is fixedly connected with a water pump, and the right side of the water pump is provided with a water pumping pipe. A conveying pipe is arranged at the top of the water pump, a first motor drives a first threaded rod to rotate to enable the adjusting assembly to ascend and descend, a second motor drives a second threaded rod to rotate to enable a first connecting block to move rightwards, and a first connecting shaft, a movable supporting rod and a second connecting shaft are matched with one another to drive the second connecting block to upwards jack up the right side of a bearing plate; the bearing plate is rotated and inclined through the rotating shaft