Coal plow cutter
View Patent ↗A plow cutter having a cutter foot that includes a cutter shank and a cutter head, the plow cutter including at least one face cutting edge, a plurality of wear-resistant face cutting edge pins each anchored in a respective recess located in the face cutting edge, at least one of the plurality being located on either side of a center plane of the cutter head, and a floor blade that includes at least one wear-resistant floor blade pin. Each of the plurality of the face cutting edge pins and the floor blade pin is made of a highly wear-resistant material, and has a conical pin head and a curved dome shape external surface.
1. A plow cutter having a cutter foot and a cutter head, the plow cutter comprising:
at least one face cutting edge;
a plurality of wear-resistant edge pins each anchored in a respective recess on a first side of a center plane of the cutter foot;
a second plurality of wear-resistant edge pins each anchored in a respective recess on a second side of the center plane of the cutter foot; and
a floor blade that includes at least one wear-resistant floor blade pin, wherein
the center plane of the cutter foot is substantially perpendicular to a cutting direction of the plow cutter;
a central axis of each of the plurality of edge pins is oriented at an angle with respect to the center plane of the cutter foot; and
each of the edge pins and the at least one floor blade pin has a conical pin head and a curved dome-shaped external surface.
2. The plow cutter of claim 1 , wherein
at least one of the edge pins is soldered into the respective recess in the cutter head.
3. The plow cutter of claim 1 , wherein
the at least one floor blade pin is located on an upper side of the cutter head opposite the cutter foot.
4. The plow cutter of claim 1 , wherein
the at least one floor blade pin is located on an upper side of the cutter head; and
the head of the at least one floor blade pin projects beyond a frontal cutting body of the floor blade.
5. The plow cutter of claim 4 , wherein
the frontal cutting body is a cutting insert.
6. The plow cutter of claim 4 , wherein
the frontal cutting body includes a frontal cutting body pin; and
a diameter of a head of the frontal cutting body pin is larger than a diameter of the head of each of the edge pins.
7. The plow cutter of claim 4 , wherein
the pin head of the at least one floor blade pin is oriented diagonally on the upper side of the cutter head relative to the cutting direction; and
a surface of the pin head that points in the cutting direction is inclined at a steeper angle with respect to the cutting direction than a surface of the pin head that points in a direction opposite to the cutting direction.
8. The plow cutter of claim 1 , wherein
an upper side of the cutter head is bordered by at least two arms that run diagonally toward each other and that meet on an apex line; and
the at least one floor blade pin is located on the upper side and on the apex line.
9. The plow cutter of claim 8 , wherein
a cutting insert that forms a frontal cutting body is formed in a triangular shape;
at least one of the edge pins is located on at least one of the arms; and
the edge pins are located on either side of the cutting insert with respect to the center plane or behind the cutting insert with respect to the cutting direction.
10. The plow cutter of claim 9 , wherein
the edge pins located on either side of the cutting insert are inserted in respective recesses in the cutter head; and
center axes of the recesses are oriented at an angle with respect to the center plane.
11. The plow cutter of claim 1 , wherein
the first plurality of wear-resistant edge pins includes at least one face cutting edge pin located in the face cutting edge.