When the single - cylinder cone crusher is in operation: the motor drives the pinion of the crusher, and the pinion drives the bull gear. The bull gear assembly (bull gear, bull gear frame, eccentric steel sleeve) drives the eccentric sleeve assembly (eccentric cylinder sleeve, eccentric copper sleeve) and the main shaft assembly (main shaft, inner cone, inner cone liner plate) to revolve around the theoretical vertical line within the copper bush. The main shaft assembly can rotate on its own around the center line of the main shaft within the eccentric copper sleeve.
When the crusher is running empty, the eccentric sleeve assembly "holds" the main shaft assembly and revolves together with the bull gear. When materials are added into the crushing cavity, the main shaft assembly (main shaft, inner cone) rotates slowly within the eccentric copper sleeve due to the resistance of the materials. The running path of the inner cone appears to swing back and forth within the crushing cavity while rotating slowly. The materials are crushed by the swinging inner cone.
The connection between the support sleeve and the frame is tightened by a hydraulic cylinder. When non - crushable objects such as metal blocks fall into the crusher, the moving cone of the single - cylinder is lifted by the hydraulic piston at the bottom, playing roles in adjusting the discharge port, protecting against passing of iron, and repeatedly lifting and falling to clear blocked ores.
