Crusher with adjustable closed side setting

A system for crushing a crushable material comprising:

• a crusher configured to receive the crushable material, the crusher comprising:
• an adjustable jaw;
• a moveable jaw;
• a frame that supports the adjustable jaw and the moveable jaw such that the adjustable jaw and the moveable jaw define a crushing chamber having an upper opening for receiving the crushable material and a lower opening for expelling crushed material from the chamber after crushing;
• a drive mechanism coupled to the moveable jaw for directing reciprocating motion of the moveable jaw;
• and
• an adjustment mechanism comprising a hydraulic ram coupled to the adjustable jaw, the hydraulic ram being configured to alter an angle of the adjustable jaw to adjust a closed side setting of the crushing chamber, which determines a size of the crushed material produced by the crusher, and to remain in a stationary position to maintain the closed side setting during operation of the crusher;
• at least one sensor for measuring at least one parameter relating to operation of the crusher;
• and
• a controller configured to receive the measured parameter from the at least one sensor and, based at least in part on the measured parameter, to automatically engage the adjustment mechanism to adjust the closed side setting.

A system for crushing a crushable material comprising:

• a crusher configured to receive the crushable material, the crusher comprising:
• an adjustable jaw;
• a moveable jaw;
• a frame that supports the adjustable jaw and the moveable jaw such that the adjustable jaw and the moveable jaw define a crushing chamber having an upper opening for receiving the crushable material and a lower opening for expelling crushed material from the chamber after crushing;
• a drive mechanism coupled to the moveable jaw for directing reciprocating motion of the moveable jaw;
• and
• an adjustment mechanism coupled to the adjustable jaw for altering an angle of the adjustable jaw and, thereby, altering a closed side setting of the crushing chamber;
• at least one sensor for measuring at least one parameter relating to operation of the crusher;
• and
• a controller configured to receive the measured parameter from the at least one sensor and, based at least in part on the measured parameter, to automatically engage the adjustment mechanism to adjust the closed side setting,
• wherein the controller is configured to perform a calibration routine, the calibration routine comprising:
• closing the adjustable jaw of the crusher with the adjustment mechanism;
• measuring a pressure level of the hydraulic cylinder coupled to the adjustment mechanism with the at least one sensor;
• if the pressure level is greater than a threshold value, storing the position of the adjustable jaw as a zero position closed side setting;
• and
• opening the adjustable jaw a predetermined distance from the zero position to a use position.