TPB-40型气动破碎镐是以压缩空气为动力的工具，压缩空气由伐轮流分配到缸体两端，使锤体进行往复运动冲击钢钎尾部，将钢钎凿入混凝土层中，使其分裂成块

 Tpb-40 pneumatic crushing pick is a tool powered by compressed air.The compressed air is distributed to both ends of the cylinder block in turn to make the hammer body reciprocate impact the end of the drill, chisel the drill into the concrete layer, make it split into blocks.