System for overload protection and gap setting for a compact eccentric crusher

A compact eccentric roll crusher for crushing a supply of mineral material, the crusher comprising:

• a crusher frame that at least partially define a crushing chamber;
• a crushing roller mounted to a drive shaft for eccentric movement within the crushing chamber;
• a crusher jaw having a first end and a second end, wherein the first end is pivotably mounted such that the second end is movable into and out of the crushing chamber to adjust a crushing gap between the crusher jaw and crushing roller;
• a pair of crusher jaw adjustment assemblies being operable to control the movement of the second end of the crusher jaw, each crusher jaw adjustment assembly comprising:
• a connection arm having a first end and a second end, wherein the first end is connected to the second end of the crusher jaw;
• a slider mounted for longitudinal movement along a slider rail, wherein the second end of the connection arm is connected to the slider;
• and
• a drive unit operable to move the slider along the slider rail to control the position of the second end of the crusher jaw.

An adjustment assembly for use with a crusher operable to crush a supply of mineral material and having a crushing roller mounted to a drive shaft for rotation in a crushing chamber and a crusher jaw having a first end and a second end, wherein the first end is pivotably mounted such that the second end is movable into and out of the crushing chamber to adjust a crushing gap between the crusher jaw and crushing roller, the adjustment assembly comprising:

• a pair of a crusher jaw adjustment assemblies positioned on first and second sides of the crusher, the crusher jaw adjustment assemblies being operable to control the movement of the second end of the crusher jaw, each crusher jaw adjustment assembly comprising:
• a connection arm having a first end and a second end, wherein the first end is connected to the second end of the crusher jaw;
• a slider mounted for longitudinal movement along a slider rail, wherein the second end of the connection arm is connected to the slider;
• and
• a drive unit operable to move the slider along the slider rail to control the position of the second end of the crusher jaw.