Reduce device that shield constructs machine knife dish and wearing and tearing of native storehouse inner wall

The utility model discloses a reduce device that shield constructs machine knife dish and wearing and tearing of native storehouse inner wall, including wear -resisting steel sheet, wear -resisting steel sheet is fixed around the blade disc, around the incision intra -annular side and on the pressure -bearing baffle of native storehouse, wear -resisting steel sheet comprises substrate and wearing layer double metal structure. The utility model discloses wearing layer hardness can reach HRC58 -62, and its wear resistance is common plate's 15 -20 more than doubly, and the 5 -10 who is low alloy steel board performance is more than doubly, can reduce in the soil body wearing and tearing of grit to blade disc circumference and native storehouse inner wall greatly. In addition, wear -resisting steel sheet is the double metal structure, is build -up welding metallurgical?bonding between wearing layer and the substrate, and bonding strength is high, can be at the in -process absorbed energy that receives the impact,