Excavation machinery patio hob is suitable for drilling all kinds of counter shafts and vertical shafts,
and can be applied to many kinds of cutters. It is mainly used in mine and tunnel ventilation shaft excavation. According to the rock mechanics of the stratum, the engineers of the excavation machinery adopt the calculation and analysis means to precisely calculate the cutting efficiency of each row of teeth and the direction of movement, so as to make it produce the maximum crushing area and volume when each tooth contacts the hole wall. The alloy teeth and other raw materials are selected from domestic famous brands, which can adapt to digging in all types of rock formations from 30MPa to 200MPa.