Apparatus and method for a coupling assembly

A coupling assembly adapted for use on rock crusher having an upper rotating shaft and a lower rotating shaft, said coupling assembly comprising:

• an eccentric axis plate, said eccentric axis plate including:
• an eccentric axis plate top surface that is operatively connected to the upper rotating shaft of the rock crusher;
• an eccentric axis plate bottom surface that is spaced apart from the eccentric axis plate top surface and has a drive tang extending therefrom;
• a slider plate, said slider plate including:
• a slider plate top surface that is in operational contact with the drive tang of the eccentric axis plate bottom surface and has a top groove therein;
• a slider plate bottom surface that is space apart from the slider plate top surface and has a bottom groove therein;
• an adapter plate, said adapter plate including:
• an adapter plate top surface that is in operational contact with the slider plate bottom surface and has an adapter plate tang extending therefrom;
• an adapter plate bottom surface that is spaced apart from the adapter plate top surface and operatively connected to the lower rotating shaft of the rock crusher;
• wherein the upper rotating shaft has a first longitudinal axis;
• and wherein the lower rotating shaft has a second longitudinal axis;
• and wherein the first longitudinal axis and the second longitudinal axis are non-parallel;
• and wherein the coupling assembly is adapted to couple the upper rotating shaft and the lower rotating shaft;
• and wherein the drive tang of eccentric axis plate and the top groove of the slider plate comprise an involute arc that is concentric to an intersection of the non-parallel first longitudinal axis and the second longitudinal axis.

A method for coupling together a first component of an item of equipment with a second component of the item of equipment, wherein the first component has a first longitudinal axis, the second component has a second longitudinal axis, and the first longitudinal axis is not parallel to the second longitudinal axis, the method comprising the steps of:

• providing a coupling assembly comprising:
• an eccentric axis plate (EAP) having an EAP first surface and an EAP second surface that is spaced apart from the EAP first surface;
• a slider plate having a slider plate first surface and a slider plate second surface that is spaced apart from the slider plate first surface;
• an adapter plate having an adapter plate first surface and an adapter plate second surface that is spaced apart from the adapter plate first surface;
• connecting the EAP first surface to the first component of the item of equipment;
• connecting the adapter plate second surface to the second component of the item of equipment;
• forming a first coupling to connect the EAP second surface and the slider plate first surface, the first coupling formed by a first tang extending from one of the EAP second surface and the slider plate first surface and a first groove formed in the other one of the EAP second surface and the slider plate first surface, wherein the first tang provides a contacting surface that is sized and configured to engage the first groove;
• forming a second coupling to connect the slider plate second surface and the adaptor plate first surface, the second coupling formed by a second tang extending from one of the slider plate second surface and the adaptor plate first surface and a second groove formed in the other one of the slider plate second surface and the adaptor plate first surface, wherein the second tang provides a contacting surface that is sized and configured to engage the second groove, wherein the contacting surface of at least one of the first tang and second tang includes an arcuate contacting surface that is an involute curve concentric to an intersection of the first and second longitudinal axes;
• and
• rotating the first component and the second component of the item of equipment using the coupling assembly.