Screw adjust cone crusher

1. A system for crushing rock comprising:

a lower section generally comprising a container with a top side opening with internal threads disposed inside a circumference of the top side opening;

a gyrating cone coupled to said lower section;

an upper section comprising:

a bonnet support comprising external threads configured to mate with said internal threads;

a bonnet disposed on said bonnet support, said bonnet configured to resist movement of rock caused by collision of rock with said gyrating cone;

a tramp iron relief system comprising:

a plurality of accumulators disposed above said bonnet.

2. The cone crusher of claim 1 wherein said plurality of accumulators are disposed entirely above said internal threads.

3. The cone crusher of claim 2 wherein said plurality of accumulators are disposed entirely above said bonnet support.

4. The cone crusher of claim 3 wherein said plurality of accumulators are disposed entirely above said bonnet.

5. The cone crusher of claim 1 further comprising:

a motor driven drive gear configured to rotate around an axis fixed with respect to said lower section;

a ring gear configured to mesh with and be driven by said motor driven drive gear, said ring gear disposed around an external periphery of said bonnet support;

said ring gear being configured to impart a rotational force and movement upon said bonnet support when said ring gear is caused to rotate by said motor driven drive gear; said ring gear further configured to allow said bonnet support to translate vertically, so as to permit said bonnet support to rotate and move up and down, with respect to said gyrating cone, during adjustment of a material output size setting.

6. The cone crusher of claim 5 wherein said ring gear and bonnet support further comprise a plurality of channel members substantially perpendicular with respect to a horizontal plane of said ring gear and coupled with one of said ring gear and said bonnet support and further comprising a plurality of longitudinal protuberances coupled with one of said ring gear and an exterior surface of said bonnet support, wherein each of said plurality of longitudinal protuberances are configured to fit within at least one of said plurality of channel members, so that said bonnet support is allowed to translate up and down with respect to said ring gear.

7. A cone crusher of claim 6 further comprising a plurality of roller supports disposed around a periphery of said lower section and configured to support from beneath said ring gear and further configured to permit said ring gear to rotate on said roller supports.

8. A cone crusher of claim 7 further comprising a threaded ring disposed adjacent said internal threads and configured to lock said bonnet support in a position by hydraulically causing said thread ring to be jammed against the external threads.

9. A cone crusher comprising:

a gyrating cone;

means for supporting the gyrating cone;

a bonnet;

means for supporting said bonnet, such that rotation of an external ring gear rotationally coupled with said bonnet results in rotation and up and down movement of the bonnet, depending on a direction of rotation of the ring gear; and,

means disposed substantially entirely above the bonnet, for releasing tramp iron from under the bonnet.

10. The cone crusher of claim 9 wherein said external ring gear is disposed below said bonnet.

11. The cone crusher of claim 9 further comprising a means for selectively preventing rotation of said means for supporting.

12. The cone crusher of claim 11 wherein said means for selectively preventing rotation comprises a hydraulically actuated clamp ring coupled to said means for supporting the gyrating cone.

13. The cone crusher of claim 9 wherein said means for supporting said bonnet comprises a bonnet support with external threads which mate with internal threads on a lower section of said cone crusher;

wherein said means for supporting said bonnet comprises a bonnet support with external threads which mate with internal threads on a lower section of said cone crusher; and

further comprising means for rotating said external ring gear so as to adjust a material output size setting.

14. A cone crusher comprising:

a gyrating cone;

a bonnet, disposed above said gyrating cone;

means for maintaining an adjustable vertical separation distance between said bonnet and said gyrating cone, where adjustment of the adjustable vertical separation distance is achieved by rotating two threaded objects with respect to each other in one direction to achieve an increased adjustable vertical separation distance and in an opposing direction to achieve a decreased adjustable vertical separation distance; and

means, disposed substantially entirely above the bonnet, for releasing tramp iron from under the bonnet.

15. A cone crusher of claim 14 wherein said means for maintaining comprises a bonnet support with a threaded exterior and a base structure with a threaded interior.

16. The cone crusher of claim 14 wherein said means, disposed substantially entirely above the bonnet, for releasing tramp iron comprises a plurality of accumulators, each of which is disposed entirely above said bonnet and around a periphery of a hopper configured to feed material to be crushed from above downwardly into an opening in the top of the bonnet.