Grader moldboard structure

A grader moldboard structure, comprising a left moldboard, a plurality of middle moldboard having the same structure, and a right moldboard that are sequentially connected to form a long strip-like moldboard body;

• wherein two sides of the middle moldboard are each provided with a non-strike-through transverse half-waist circular groove and a semi-circular hole in the groove, connection edges of one sides of the left moldboard and the right moldboard are each provided with a non-strike-through transverse half-waist circular groove and a semi-circular hole in the groove, the two half-waist circular grooves being spliced to form a waist circular groove for inserting a connection block, a positioning circular hole corresponding to a circular hole formed in the middle of the waist circular groove being provided in the middle of the connection block;
• at least one row of hard alloy blocks sequentially connected to each other is welded on front upper edges of the left moldboard, the middle moldboards and the right moldboard respectively, at least inner and outer two rows of particulate hard alloy layers being at least parallelly welded on an inner upper surface of the hard alloy block, a lateral particulate hard alloy layer perpendicular to the two rows of particulate hard alloy layers along a lateral side being welded on both ends of the two rows of particulate hard alloy layers.