COAL PLOW Russian patent published in 1994 - IPC

FIELD: mining equipment. SUBSTANCE: plow has a main frame, bodies with cutting tools, end frames with swivels for connecting a draw member and a device for fixing the main and corresponding end frames relative to each other in the vertical plane. The end frames are pivotally connected to the main frame. Each articulated joint is made in the form of projections located on the side part of the main frame and shaped projections located on the end frame. Each shaped projection on the end frame embraces a matching projection on the main frame. Each device for fixing the main frame to the end frame is made in the form of a distance spacer mounted in the clearance between the end and main frames. EFFECT: improved structure. 5 dwg