Concave soil is broken cutter slightly

The utility model provides a concave soil is broken cutter slightly, includes blade disc and the box-like tool bit of 3-6 suits, the blade disc is round platform shape, and the center part of blade disc is provided with the mounting hole that makes up with the roller, is provided with and makes up the swallow-tail form block that formula tool bit quantity is matchd on the face of cylinder of blade disc, the swallow-tail form block encircles the face of cylinder evenly distributed of blade disc, combination formula tool bit comprises operator head and vice tool bit, and the operator head is including broken head of concave soil and connector, and vice tool bit is the plate body, the top surface be provided with and the lug that the broken overhead spacing groove of concave soil matches, bottom surface be the arc surface that matches with the face of cylinder of blade disc, are the working face in front, the working face is provided with cycloid tooth and cycloid groove, and vice tool bit is on through the loading end of bolt fastening connector in the operator head and be located the broken head below of concave soil, becomes detachable the connection with the operator capitiform, each makes up the formula tool bit and installs respectively and be provided with swallow-tail form block department on the blade disc face of cylinder, through baffle and bolt fastening and form detachable connection.