Conical crusher
First Claim
Patent Images
1. An apparatus for crushing materials, comprising:
- (a) a frame structure including a hub member having a vertical bore;
(b) a stationary support member having a central longitudinal axis, and having an upper portion and a lower portion, said lower portion being positioned within said bore and secured to said hub;
(c) a cylindrical eccentric mounted around said stationary support member for eccentric rotation therearound, said eccentric having an axis which intersects said longitudinal axis;
(d) means for rotating said eccentric about said support member;
(e) a head assembly having a cylindrical eccentric follower mounted on said eccentric for eccentric rotational movement about said support member, and including a lower crusher surface, and an upper spherical bearing member fixed to the underside of said head assembly;
(f) a bowl assembly mounted for adjustable movement relative to said frame, said bowl assembly having an upper crusher surface spaced an adjustable predetermined distance from said lower surface under static conditions; and
(g) a spherical bearing seat supported by rigidly fixed to said upper portion of said support member, and holding and supporting said upper spherical bearing member, said spherical bearing seat having a center of curvature which substantially coincides with said intersection of said eccentric axis and said longitudinal axis.
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Reexamination
Accused Products
Abstract
A crusher of the conical type has a spherical bearing arrangement for supporting the head assembly on a stationary shaft. Included are tramp release means for automatically opening the crusher throat when tramp material is encountered and for jacking open the throat under nonoperating conditions.
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Citations
27 Claims
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1. An apparatus for crushing materials, comprising:
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(a) a frame structure including a hub member having a vertical bore; (b) a stationary support member having a central longitudinal axis, and having an upper portion and a lower portion, said lower portion being positioned within said bore and secured to said hub; (c) a cylindrical eccentric mounted around said stationary support member for eccentric rotation therearound, said eccentric having an axis which intersects said longitudinal axis; (d) means for rotating said eccentric about said support member; (e) a head assembly having a cylindrical eccentric follower mounted on said eccentric for eccentric rotational movement about said support member, and including a lower crusher surface, and an upper spherical bearing member fixed to the underside of said head assembly; (f) a bowl assembly mounted for adjustable movement relative to said frame, said bowl assembly having an upper crusher surface spaced an adjustable predetermined distance from said lower surface under static conditions; and (g) a spherical bearing seat supported by rigidly fixed to said upper portion of said support member, and holding and supporting said upper spherical bearing member, said spherical bearing seat having a center of curvature which substantially coincides with said intersection of said eccentric axis and said longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A crusher of the conical type having a stationary lower frame assembly, a vertically movable upper frame assembly biased toward said lower frame assembly, a head assembly including a crusher head mounted on a support means for gyratory motion relative to said frame assemblies, an adjustable bowl mounted to said upper frame assembly for vertical movement relative to said frame assemblies and head assembly, and eccentric means for imparting gyratory motion to said head, and a drive means for driving said eccentric means, said crusher characterized by release means including biasing means and lifting means connected to said lower and upper frames for releasably biasing said upper frame into an abutting relationship with said lower frame and responsive to a first signal for deactivating said biasing means and activating said lifting means for lifting said upper frame away from said lower frame to permit the clearing of jammed material, and responsive to a second signal for activating said biasing means and deactivating said lifting means;
- said release means comprising a plurality of double acting hydraulic cylinders and pistons, said cylinders connected to one of said frame assemblies and said pistons connected to the other of said frame assemblies, one end of said cylinders being pressurized in a normally operating crushing mode to exert a hydraulic biasing force to hold said frame assemblies together in abutting relationship, and further including at least one normally pressurized accumulator in fluid communication with said one end of one of said cylinders to receive fluid displaced from said one cylinder when tramp material passes through the crushing cavity between said head and said bowl.
- View Dependent Claims (9, 10, 11, 12, 13)
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14. A crusher frame, comprising:
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(a) a hub member having a vertical bore for receiving a stationary crusher apparatus support member and an annular, substantially horizontal surface about said bore for rotatably supporting an eccentric; (b) a horizontally positioned base flange; (c) a plurality of arms integral with and extending radially outwardly from said hub, each of said arms bifurcating into a pair of diverging vertical flanges secured to said base flange; (d) an annular shell fabricated from sheet steel and positioned in a welded, abutting relationship to said base flange between said arms and to said extension of said arms; (e) an annular ring yieldably secured along its lower periphery in an abutting relationship to the upper periphery of said annular shell; (f) an annular member movable attached to the internal surface of said annular ring for vertical movement relative to said annular ring; and (g) yielding means fixedly secured to each of said vertical flanges and yieldably secured to said annular ring for biasing said annular ring to said annular shell. - View Dependent Claims (15, 16)
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- 17. A crusher of the conical type having a stationary lower frame assembly, a vertically movable upper frame assembly biased toward said lower frame assembly, a head assembly including a crusher head mounted on a support means for gyratory motion relative to said frame assemblies, an adjustable bowl having an annular surface with spaced abutments and mounted to said upper frame assembly for vertical movement relative to said frame assemblies and head assembly by virtue of interfacing, helically threaded surfaces of said upper frame and bowl, an eccentric for imparting gyratory motion to said head, and a drive means for driving said eccentric, said crusher characterized by having a bowl adjusting double acting ram assembly mounted on one of said frame assemblies, said ram assembly having a cylinder and, within said cylinder, an axially reciprocating piston, said cylinder having fluid connectors for delivering pressurized fluid selectively to either side of said piston, a fork connected to said piston having two engaging surfaces for selective engagement with opposite sides of said abutments, said fork having first and second positions in which said ram assembly rotates said bowl in one direction on the extension stroke of said piston when said fork is in said first position, and in the other direction on the retraction stroke of said piston when said fork is in said second position, thereby imparting vertical movement to said bowl.
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19. An apparatus for crushing materials, comprising:
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(a) a frame structure including a base, an annular shell supported by said base, a central hub with a central bore, and a plurality of arms integral with and extending radially out from said hub and terminating at said base, said annular shell having an upper portion which terminates in a ring seat; (b) an annular ring mounted for vertical movement and biased downwardly against said ring seat, said annular ring being helically threaded along the internal surface thereof; (c) a bowl assembly including an annular substantially vertical flange helically threaded along the external surface and meshing with the internally threaded surface of said annular ring, and an upper crusher surface secured to said flange; (d) a head assembly including a lower crusher surface spaced an adjustable predetermined static distance from said upper crusher surface; (e) bowl assembly adjusting means mounted on said ring for rotating said bowl assembly to adjust the static distance from said upper and lower surfaces; (f) a stationary support shaft having a top portion, and also having a bottom portion rigidly maintained within the central bore of said hub; (g) head assembly support means for vertically and horizontally supporting said head assembly on said shaft, and including an upper spherical bearing surface secured to said head assembly, and a lower spherical bearing surface secured to said support shaft top portion and supporting said upper bearing surface; (h) an eccentric means mounted for rotational movement about said stationary shaft for imparting gyratory motion to said lower crusher surface, said eccentric means supported axially by said central hub; (i) drive means for rotating said eccentric means; and (j) a plurality of release means each supported by said base and connected to said annular ring for biasing said annular ring against said ring seat under normal operating conditions and for permitting upward vertical displacement of said annular ring when said upper and lower crusher surfaces encounter tramp material, said release means additionally being operative to positively displace said annular ring upward under static conditions for clearing the space between said upper and lower crusher surfaces. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification