Anti-spin apparatus and method for cone crusher head

In a cone or gyratory crusher, wherein said crusher comprises a bowl liner mounted in a bowl, said bowl having a frame and a feed opening for receiving material to be crushed, said bowl liner having an interior surface, and a crusher head assembly extending upwardly into a space formed by said bowl liner, wherein in operation said crusher head assembly gyrates about a central shaft and is provided gyrational motion by a motor-driven rotating eccentric element, the improvement comprising:

• a solid deformable annular rubber muscle element secured relative to said bowl frame and positioned between said bowl frame and a surface of the crusher head assembly;
• means for applying pressure to a first external surface of said solid deformable annular rubber muscle element to thereby force a second opposed external surface of said solid deformable annular rubber muscle element into contact under pressure with said surface of the crusher head assembly to prevent spin of the crusher head assembly during start-up, and for releasing reducing the applied pressure to the first external surface of said solid deformable annular rubber muscle element to thereby release said second opposed external surface of said solid deformable annular rubber muscle element from contact under pressure with said surface of the crusher head assembly during normal operation, whereby said means prevents said crusher head assembly from spinning during start-up of said crusher, and, after material for crushing is introduced into said bowl, said second opposed external surface of said solid deformable annular rubber muscle element no longer contacts said surface of said crusher head assembly whereby said crusher head assembly is then prevented from rotation with the eccentric element by the friction of the material for crushing between said crusher head assembly and said bowl liner.

An anti-spin device for a cone or gyratory crusher, wherein said crusher comprises a bowl liner mounted in a bowl, said bowl having a frame and a feed opening for receiving material to be crushed, said bowl liner having an interior surface, and a crusher head assembly extending upwardly into a space formed by said bowl liner, wherein in operation said crusher head assembly gyrates about a central shaft and is provided gyrational motion by a motor-driven rotating eccentric element, said anti-spin device comprising:

• a solid deformable annular rubber muscle element secured relative to said bowl frame and positioned between said bowl frame and a surface of the crusher head assembly;
• means for applying pressure to a first external surface of said solid deformable annular rubber muscle element to thereby force a second opposed external surface of said solid deformable annular rubber muscle element into contact under pressure with said surface of the crusher head assembly to prevent spin of the crusher head assembly during start up, and for reducing the applied pressure to the first external surface of said solid deformable annular rubber muscle element to thereby release said second opposed external surface of said solid deformable annular rubber muscle element from contact under pressure with said surface of the crusher head assembly during normal operation, whereby said means prevents said crusher head assembly from spinning during start-up of said crusher and, after the crusher has started and material for crushing is introduced into said bowl, the second opposed external surface of said solid deformable annular rubber muscle element no longer contacts said surface of said crusher head assembly whereby said crusher head assembly is then prevented from rotation with the eccentric element by the friction of the crushed material between said crusher head assembly and said bowl liner.