Rock crushing machine with rotary eccentric jaw driving mechanism

A rock crusher comprising:

• a frame, said frame including a pair of upright spaced apart frame walls;
• at least one stationary jaw extending transversely between said frame walls;
• a generally upright movable jaw suspended between said upright frame walls for reciprocating movement toward and away from said stationary jaw, said movable jaw including a first cylindrical wall portion which defines a first chamber of circular cross section extending at least partially through the movable jaw along a transverse axis between the frame walls;
• and
• drive means for reciprocating said movable jaw in a substantially linear direction toward and away from said stationary jaw to crush rock between the jaws, said drive means including first rotatable cam shaft means positioned at least partially within said first chamber and first eccentric means mechanically coupled to said first cam shaft means for motion relative to said cam shaft means and cooperating with said cam shaft means to impart reciprocating motion to said movable jaw substantially in said linear direction when said first cam shaft means rotates.

A rock crusher comprising:

• a frame, said frame including a pair of upright spaced apart frame walls;
• a generally upright movable jaw suspended between said upright frame walls for reciprocating movement toward and away from said stationary jaw, said movable jaw including a first cylindrical wall portion which defines a first chamber of circular cross section extending at least partially through the movable jaw along a transverse axis between the frame walls;
• and
• drive means for reciprocating said movable jaw in a substantially linear direction toward and away from said stationary jaw to crush rock between the jaws, said drive means including first rotatable cam shaft means positioned at least partially within said first chamber and first eccentric means mechanically coupled between said first cam shaft means and said first cylindrical wall portion such that said movable jaw reciprocates substantially in said linear direction when said first cam shaft means rotates,
• said first chamber being positioned in a lower portion of said movable jaw, said movable jaw also including a second cylindrical wall portion which defines a second chamber of circular cross section extending at least partially through an upper portion of the movable jaw along a transverse axis between the frame walls, said drive means including second rotatable cam shaft means positioned at least partially within said second chamber and second eccentric means mechanically coupled between said second cam shaft means and said second cylindrical wall portion such that said movable jaw reciprocates substantially in said linear direction when said second cam shaft means rotates.

A rock crusher comprising:

• a frame, said frame including a pair of upright spaced apart frame walls;
• a pair of stationary jaws extending transversely between said frame walls;
• a pivot shaft extending transversely between an upper portion of said frame walls and pivoted at one end portion to one of said frame walls and at its other end portion to the other of said frame walls;
• a generally upright movable jaw mounted to said pivot shaft between said frame walls for swinging movement about the axis of said shaft, said movable jaw including a cylindrical chamber defining sleeve extending transversely through said movable jaw so as to define a chamber of circular cross section having an axis which is parallel to said pivot shaft;
• a drive shaft extending through said chamber and pivoted at one end portion to one of said frame walls and pivoted at its other end portion to another of said frame walls, said drive shaft including a cylindrical camming portion positioned within the chamber;
• a hollow cylindrical eccentric bushing surrounding said camming portion, said eccentric bushing being mechanically coupled to the interior surface of said chamber defining sleeve and to the exterior surface of said camming portion, so as to move relative to both said cylindrical sleeve and said camming portion with the rotation of said camming portion, and such that said movable jaw moves substantially in a horizontal direction between the stationary jaws when the drive shaft is rotated.