Patent ID: 7699253

Claim:
A conical crusher, comprising: a structure, superiorly carrying an upper housing; a tubular axle vertically fixed to the structure and provided with an axial through hole housing a supporting rod having an upper end and a lower end coupled to an actuator mounted on structure; a cone head internal to the upper housing and defining therewith a crushing cavity, said cone head being axially journalled onto the upper end of the supporting rod and being radially and eccentrically journalled around the tubular axle, said actuator being selectively driven to define the axial positioning of the supporting rod and of the cone head in relation to the upper housing, wherein the supporting rod has the upper end thereof articulated to the cone head and the lower end thereof provided with a spherical joint formed in the structure, said supporting rod defining, with the axial through hole of the tubular axle, a radial gap sufficient for allowing the oscillation of the supporting rod around the spherical joint, following the oscillation of the cone head during operation of the conical crusher, said radial gap being slightly larger than the eccentricity of the radial bearing of the cone head, in order to prevent the supporting rod from touching the tubular axle.