Torque reaction pulley for an inertia cone crusher

A torque reaction pulley mountable at an inertia crusher to form part of a drive transmission mechanism for rotational drive of an unbalanced mass body within the crusher, the pulley comprising:

• a drive input portion connectable to a motor to provide rotational drive to the pulley;
• a drive output portion connectable to the mass body to transmit the rotational drive to the mass body;
• and
• a self-adjusting torque reaction coupling formed non-integrally with the drive input and output portions and being configured to receive, store and at least partially return torque to components of the drive transmission mechanism and positioned in the drive transmission pathway intermediate the drive input and output portions, the torque reaction coupling including an elastic component configured to transmit a torque to the mass body and to dynamically displace and/or deform elastically in response to a change in the torque resultant from rotation of the mass body within the crusher so as to dissipate the change in the torque at the crusher, the unbalanced weight being suspended in a floating arrangement relative to the drive transmission mechanism via the torque reaction coupling such that the torque reaction coupling is arranged to enable a predetermined amount of change in a tilt angle of the unbalanced weight and an angular velocity of the unbalanced weight relative to rotational drive of the torque reaction coupling.