Light internal combustion impact type tamping pickaxe

The invention discloses a light internal combustion impact type tamping pickaxe which comprises a power part, a gear part, a transmission part and a pickaxe body part. The gear part comprises a gear box, a change gear and a pinion, wherein the change gear and the pinion are arranged in the gear box and are connected in a meshed mode. The power part is located on the lower side of the gearbox and connected with the small gear. The air pressure crank case is connected with the gearbox, the change gear is located on the air pressure crank, and the air pressure connecting rod is connected with the air pressure crank. The upper pickaxe body is connected with the air pressure crankcase, the lower pickaxe body is connected with the upper pickaxe body, the air pressure piston is in sliding fit with the upper pickaxe body, a sealing device is arranged in the lower end of the upper pickaxe body, the impact piston is located in the upper pickaxe body, and one end of the impact piston extends into the lower pickaxe body.