Jaw crusher with multiple drive means

An improved jaw crusher including a supporting frame structure, a pair of opposed downwarding converging crusher jaws defining therebetween a space for passage of material to be crushed, means supporting one of the jaws in floating relation on the frame structure, means supporting the other jaw on the frame structure for opposed crushing action relative to the one jaw, and improved means for imparting oscillatory vibration to the one jaw comprising

• multiple sets of similar eccentric masses arranged in vertically spaced apart relation, each set having at least two eccentric masses arranged in laterally spaced apart relation on separate shafts independently mounted on the one jaw by separate bearing means, the shafts for each set of eccentric masses being interconnected by flexible coupling means, and drive means operatively interconnected with the eccentric masses for driving them in rotation and imparting oscillatory vibration to the one jaw whereby the size of the eccentric masses is proportionately reduced relative to a single eccentric mass for driving the one jaw and the size of the bearings is similarly reduced permitting operation of the eccentric masses at increased rates of rotation as desired for achieving optimum operation of the crusher, one of the shafts for each set of eccentric masses being interconnected with the drive means by split gear means for synchronously operating the multiple sets of eccentric masses.

In a jaw crusher including a supporting frame structure, a pair of opposed downwardly converging crusher jaws defining therebetween a space for passage of material, means supporting one of the jaws in floating relation on the frame structure, means supporting the other jaw on the frame structure for opposed crushing action relative to the one jaw, an improved support for the one jaw comprising

• an elongated resilient member connected with the frame structure behind the jaw,
• a reaction member connected to the jaw and cicumferentially surrounding the elongated resilient member for permitting oscillatory movement of the jaw in response to an eccentric means while at the same time limiting travel of the jaw in all directions on the frame structure, the reaction member being connected to a lower portion of the jaw and further comprising additional resilient means mounted on the frame structure behind an upper portion of the jaw,
• releasable means connecting the elongated resilient member with the frame structure and permitting the elongated resilient member to be disconnected from the frame structure to facilitate installation and removal of the jaw as a unit, and
• motor means mounted on the frame structure and interconnected with the eccentric means by releasable coupling means allowing the eccentric means to be installed and removed as part of the jaw unit.