Drilling power assisting device of drilling machine

The utility model relates to an assisting device, in particular to a drilling power assisting device of a drilling machine, and belongs to the technical field of the drilling machine. The drilling power assisting device of the drilling machine comprises a drilling frame and a feeding trolley, wherein a plurality of feeding motors with speed reducers are arranged on the feeding trolley, the output ends of the feeding motors with speed reducers are connected with a feeding gear, and the feeding gear at the the output ends of the feeding motors with speed reducers is connected with a rack arranged on the drilling frame in a meshed way. Power-assisted motors with speed reducers and having the same quantity with the feeding motors with speed reducers are arranged on the feeding trolley, the output ends of the power-assisted motors with speed reducers are connected with a power-assisted gear, and the power-assisted gear at the output ends of the power-assisted motors with speed reducers is connected with the rack arranged on the drilling frame in a meshed way. The drilling power assisting device of the drilling machine improves adaptability of the drilling machine to narrow terrains and loaded transport, uses a stable rack and pinion mechanism to replace a chain mechanism with relative poor stability, and thus effectively avoid an adverse effect to smooth operation caused by the possibility of skidding and gear jumping between a chain and a chain wheel during work.