Patent ID: 6070820
Filing Date: 2000-06-06
Classification: B02C

Abstract:
A table assembly for use in a vertical shaft impact crusher for crushing aggregate material, the crusher including a housing having an interior defining an impact surface, the table assembly comprising:a flywheel disposed inside the housing and supported for rotation about a vertical axis;a table adapted for attachment to the flywheel, the table having a top surface, a bottom surface, and a peripheral edge, a portion of the table top surface defining an aggregate material landing surface;a plurality of shoe assemblies mounted to the top surface of the table adjacent to and circumferentially spaced along the peripheral edge, each of the shoe assemblies having a guide surface positioned to throw the outwardly migrating aggregate material toward the impact surface in response to rotation of the table assembly, the shoe assemblies collectively imparting a downward bending moment to the table assembly in response to rotation of the table assembly;a liner mounted to the outer periphery of the table; anda reinforcing ring attached to the bottom surface of the table at a point disposed radially outwardly of an outer extent of the flywheel and radially inwardly of an inner extent of the liner, the reinforcing ring being sized to counteract the downward bending moment, thereby relieving stresses on the table assembly.