Jaw crusher working principle
The electrical motor drives the crusher shaft and make the movable jaw move upwards and downwards. This movement would trigger the toggle plate to push the movable jaw forward and backwards. When the movable jaw moves forth toward the fixed jaw, materials in the crushing cavity will be squashed or chopped. And the movable jaw travels back, the chopped or squashed materials which met the requirement will be discharged from the outlet. Since the motor keeps working, the crusher will crush and discharge periodically to achieve mass production
Jaw crushers are heavy duty machines and hence need to be robustly constructed. The outer frame is generally made of cast iron or steel. The jaws themselves are usually constructed from cast steel. They are fitted with replaceable liners which are made of manganese steel, or Ni-hard (a Ni-Cr alloyed cast iron). Jaw crushers are usually constructed in sections to ease the process transportation if they are to be taken underground for carrying out the operations.