Cone crusher with peripherally driven gyratory head
AssigneeCedarapids, Inc.
InventorRoger M. Clark
Life of this patent
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Abstract
A conical crusher head of a gyratory cone crusher is supported by a spider arm cradle. Radially disposed and circumferentially evenly spaced spider arm type support members of the cradle extend outwardly through an annular material discharge path in the lower portion of the crusher and through the generally cylindrical frame of the crusher. A gyratory drive mechanism is disposed annularly about the material flow path region and is coupled to the head support members to gyrate the head.
Claims19
A gyratory crusher comprising:
- a crusher frame;
- a concave disposed and supported against an upper end of the crusher frame, the concave having an inner crushing surface sloping radially outward in a downward direction, and having a central material feed opening at an upper portion of the concave and a bottom opening larger than the central material feed opening at a base of the concave;
- a spider arm cradle disposed beneath the base of the concave, the spider arm cradle having spider arms extending from generally a vertical centerline through the crusher radially outward beyond the base of the concave;
- a crusher head of conical shape disposed on and totaly supported by the spider arm cradle generally centrally within the concave, the crusher head having a conical crushing surface extending adjacent the crushing surface of the concave, the crusher head and the concave being spaced from each other and forming a material crushing chamber there between, the crushing chamber having an annular discharge opening about a periphery of the crushing head;
- a spider arm cradle drive disposed annularly about the lower crusher frame portion, the spider arm cradle drive engaging each of the spider arms and moving each spider arm in a rotational path about an axis of rotation, the respective axes of rotation of the spider arms intersecting in an apex of gyration of the crusher head.
A gyratory crusher comprising:
- a crusher frame;
- a support structure disposed and urged against an upper end of the crusher frame, the support structure having a plurality of peripherally spaced thread lugs extending inward from the support structure in a helical thread pattern having a predetermined pitch;
- a concave having external threads of the same predetermined pitch of the thread lugs, the threads being engaged by the thread lugs to support the concave at a selected height within the support structure;
- a crusher head disposed within a lower end of the crusher frame and having upward directed crushing surfaces extending toward the concave;
- means for totaly supporting the crusher head vertically with respect to the concave;
- and
- means for driving the crusher head in a gyratory orbit with respect to the concave.
A gyratory crusher of the type which crushes materials between a concave and a gyrating crusher head, comprising:
- a spider arm cradle disposed generally centrally within the gyratory crusher, the spider arm cradle having a plurality of spider arms;
- a crusher head totaly supported by the spider arm cradle, the spider arms of the spider arm cradle extending outward from the periphery of the crusher head through a material discharge region disposed annularly about the crusher head, the spider arms having respective spider arm ends disposed externally of and annularly about the material discharge region;
- and
- means, disposed externally about the material discharge region and engaging each of the spider arm ends for revolving each of the spider arm ends about respective axes of gyration intersecting at an apex, to gyrate the crusher head about the apex of gyration.
Dependencies are inferred from the claim text.