High-speed wall breaking knife

The utility model provides a high-speed wall breaking knife. The high-speed wall breaking knife comprises a first blade and a second blade, the first blade comprises a first supporting block and two first blades; the two first blades are arranged on the two sides of the first supporting block correspondingly and bent downwards. The side edge of the first blade is provided with a first blade; the second blade comprises a second supporting block and two second blades; the two second blades are arranged on the two sides of the second supporting block correspondingly and bent upwards. The side edge of the second blade is provided with a second blade; the first blades and the second blades are fixed to the cutter bar in a lap joint mode, and the two first blades and the two second blades are distributed in a staggered mode. The cutting area of the blade can be increased, the cutting efficiency and the wall breaking effect can be improved, noise and vibration can be reduced, and power loss can be reduced. 本申请提出一种高速