Special-shaped bottom surface type dynamic compaction hammer and crawler-type dynamic compaction machine

The utility model provides a special-shaped bottom surface type dynamic compaction hammer and a crawler-type dynamic compaction machine, and relates to the technical field of constructional engineering machinery. The special-shaped bottom face type dynamic compaction hammer comprises a hammer body and filler, a hammering face is formed at the bottom of the hammer body, an annular groove is formed in the hammering face, a cavity is formed in the hammer body, the hammer body is provided with an exhaust channel arranged in the vertical direction, the exhaust channel and the cavity are independently arranged, and the exhaust channel is gradually expanded from the middle to the two ends; and the filler is filled in the cavity. Due to the fact that the annular groove is formed in the hammering face, local vacuum is not prone to being formed between the hammer body and the tamped ground, the exhaust channel is gradually expanded from the middle to the two ends so that tamped soil can be prevented from blocking the e