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US 4,382,560 AGranted
Rock crushing machine with dual cam shaft jaw driving mechanism
OwnerNicolle A. Tooleinventor
Life of this patent
Estimating the term…
Abstract
A rock crusher includes a dual cam shaft drive mechanism for imparting substantially linear motion to a movable jaw between a pair of fixed jaws. A driven cam shaft coupled to the movable jaw cooperates with another cam shaft also coupled to the jaw to impart this motion to the jaw. In one embodiment, the maximum eccentricity of the driven cam shaft is less than the maximum eccentricity of the other cam shaft so that the other cam shaft oscillates and imparts the desired motion to the movable jaw. In another embodiment, the cam shafts have the same maximum eccentricity and are synchronized to move together, such as by gears, during crushing.
Claims16
A rocker crusher comprising:
- a movable jaw;
- a stationary jaw;
- and a drive mechanism including
- rotatable drive cam shaft means extending transversely through and mechanically coupled to the movable jaw and oscillating cam shaft means extending transversely through and mechanically coupled to the movable jaw.
1 more element
A drive mechanism for a rock crusher with a movable jaw and a stationary jaw comprising:
- first rotatable eccentric shaft means coupled to such a movable jaw, said first eccentric shaft means having a maximum eccentricity of a first dimension and being adapted for driving in rotation;
- and
- second floating eccentric shaft means coupled to said movable jaw, said second eccentric shaft means having a maximum eccentricity of a second dimension greater than the first dimension such that the second eccentric shaft means oscillates when the first shaft means rotates to impart reciprocating motion to the movable jaw.
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 of reciprocating movement toward and away from said stationary jaw, said movable jaw including first and second spaced apart wall portions which define respective first and second spaced apart chambers each extending at least partially through the movable jaw along a transverse axis between the frame walls;
- and
- drive means for reciprocating said movable jaw toward and away from said stationary jaw to crush rock between the jaws, said drive means including first rotatable cam shaft means journalled to said first wall portion, having a maximum eccentricity of a first dimension, and positioned at least partially within said first chamber, said drive means also including second cam shaft means journalled to said second wall portion having a maximum eccentricity of a second dimension equal to the first dimension, and positioned at least partially in the second chamber, such that said second cam shaft means oscillates and said movable jaw reciprocates when said first cam shaft means rotates;
- and also including synchronizing means for mechanically coupling said first and second shaft means such that they rotate together when one of said shafts is rotated.
3 more elements
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 first and second spaced apart wall portions which define respective first and second spaced apart chambers each extending at least partially through the movable jaw along a transverse axis between the frame walls;
- and
- drive means for reciprocating said movable jaw toward and away from said stationary jaw to crush rock between the jaws, said drive means including first rotatable cam shaft means journalled to said first wall portion, having a maximum eccentricity of a first dimension, and positioned at least partially within said first chamber, said drive means also including second cam shaft means journalled to said second wall portion having a maximum eccentricity of a second dimension greater than the first dimension, and positioned at least partially in the second chamber, such that said second cam shaft means oscillates and said movable jaw reciprocates when said first cam shaft means rotates.
2 more elements
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 drive 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, said drive shaft including a first cylindrical camming portion;
- an oscillating shaft extending transversely between a lower portion of said frame walls and pivoted to one end portion to one of said frame walls and pivoted at its other end portion to another of said frame walls, said oscillating shaft including a second cylindrical camming portion of a greater maximum eccentricity than the maximum eccentricity of the first camming portion;
- a generally upright movable jaw mounted to said drive shaft and to said oscillating shaft between said frame walls for reciprocating movement between the stationary jaws, a rock crushing cavity being defined between each of said stationary jaws and the movable jaw, said movable jaw including respective upper and lower first and second cylindrical chamber defining sleeves extending transversely through said movable jaw so as to define first and second chambers of circular cross section;
- said drive shaft extending through said first chamber with said first camming portion being journalled to said first chamber defining sleeve;
- said oscillating shaft extending through said second chamber with said second camming portion being journalled to said second chamber defining sleeve;
- and
- means for rotating said drive shaft thereby oscillating said oscillating shaft and moving said movable jaw between said stationary jaws to crush rock in each rock crushing cavity.
6 more elements
Dependencies are inferred from the claim text.