The swing jaw moves up and down via eccentric shaft,driven by motor through v-belt and belt pully.The angle between toggle plate and swing jaw increase when swing jaw moves up.So movable jaw plate approaches fixed jaw plate.The stuff gets crushed in this process simultaneously.When swing jaw moves down,the angle decreases.And the movable jaw plate leaves the fixed jaw plate with the action of pulling rod and spring.The finished material is discharged from crushing chanmber.