Abstract: A gyratory crusher crushing head, removably mounted a crushing shell, includes a circumferential groove is formed in an outer facing surface of the crushing head. The groove is positioned towards a second lower end at the outward facing surface relative to an axial length of the crushing head. The groove and its relative axial positioning minimizes the stress concentrations at the crushing head resulting from forces tangential to the outward facing surface.

Abstract: A counterweight for use in a cone crusher that includes an inner oil chamber and an outer oil chamber to collect lubricating oil during operation of the cone crusher. The counterweight includes a vertical separating wall that receives a splash shield. The vertical separating wall and splash shield define an inner oil chamber while an outer oil chamber is defined by the splash shield, the vertical separating wall and an inner wall of the counterweight. Both the inner and outer oil chambers include drain holes that allow lubricating oil to pass through a generally horizontal floor of the counterweight. The combination of the inner and outer oil chambers allows oil to quickly exit the counterweight into the main oil sump and reduces the amount of oil that gets exposed to the upper seal assembly which reduces the passage of oil past seal assemblies formed in the cone crusher.

Abstract: Gyrator crusher has a crusher head on which a first crushing shell is mounted, a frame on which a second crushing shell is mounted, the first and second crushing shells forming a crushing aperture. Drive device rotates an eccentric causing the connected crusher head to perform gyratory movement for crushing. Dust seal seals a gap between the frame and a fastening portion situated close to the crusher head and includes a seal bellows and a seal slide ring. Seal slide ring connects sealingly to a lower portion of the seal bellows and has a lower slide surface adapted to slide along, and to sealingly abut, with a substantially vertical abutment pressure, against an upper slide surface on the frame. Upper portion of the seal bellows sealingly connects to the fastening portion so rotation of the crusher head rotates the seal slide ring about a substantially vertical axis of rotation.

Abstract: A gyratory crusher, including an outer crushing shell and an inner crushing shell forming between them a crushing chamber, the crushing chamber communicating with a discharge zone that forwards crushed material from the crushing chamber and out of the crusher. The inner crushing shell is supported on a crushing head. The outer crushing shell is supported on a crusher frame. At least one sealing arrangement is between the discharge zone and a working part zone in which at least one bearing for the crushing head to perform a gyratory movement relative to the crusher frame is arranged. The sealing arrangement includes a sealing surface, and a sealing member arranged to seal against the sealing surface and including an inner circumferential flexible sealing lip, an outer circumferential flexible sealing lip and at least one inlet for pressurized fluid to be supplied to an overpressure zone arranged between the inner and outer sealing lips and the sealing surface.

Abstract: A gyratory cone crusher 10 includes a support frame 12 having a vertical axis X and a receiving formation 14 mounted rigidly in the frame 12, a central vertical axis of the receiving formation 14 being in line with vertical axis X. A crushing head 16 is slideably engaged with the receiving formation 14 and has a first, upwardly presented conical crushing surface 18. A crushing bowl 20 having a second, downwardly presented funnel-shaped second crushing surface 22 spaced apart from the first crushing surface 18 is mounted above the crushing head 16. The crushing bowl 20 is mounted in an eccentric housing 24 so that a central axis Z of the crushing bowl 20 is positioned at an angle oblique to vertical axis X.

Abstract: A gyratory crusher includes a crushing head, which is arranged rotatably on a substantially vertical shaft and on which a first crushing shell is mounted, and a frame, on which a second crushing shell is mounted, which second crushing shell, together with the first crushing shell, delimits a crushing gap. A supporting piston is arranged inside a cavity of the shaft, which supporting piston is displaceable in the vertical direction in order to adjust the width of the crushing gap. An eccentric is, by means of at least one radial bearing, arranged rotatably about the shaft. The gyratory crusher has an oil line, arranged in the cavity and extending through a piston plate included in the supporting piston, for supplying lubricating oil to a lubricating oil chamber configured at least partially in the cavity above the piston plate, the lubricating oil chamber being connected to the radial bearing by a duct arranged in the shaft.

Abstract: A gyratory crusher including a crusher head on which a first crushing shell is mounted, a frame on which a second crushing shell is mounted, the first and second crushing shells forming a crushing aperture. A drive device is adapted to rotate an eccentric to which the crusher head is so connected as to be caused, during rotation of the eccentric, to perform a gyratory movement for crushing of material which is introduced into the crushing aperture. A dust seal is adapted to seal a gap between the frame and a fastening portion situated close to the crusher head. The dust seal includes a seal bellows and a seal slide ring. The seal slide ring is connected sealingly to a lower portion of the seal bellows and has a lower slide surface adapted to slide along, and to sealingly abut, with a substantially vertical abutment pressure determined by the inherent weight of the seal slide ring and by the influence of the seal bellows, against an upper slide surface provided on the frame.

Abstract: A central shaft for a gyratory crusher, which includes a crushing head on which a first crushing shell is mounted; a frame on which a second crushing shell is mounted, which second crushing shell defines, together with the first crushing shell, a crushing gap; and a driving device, which is arranged to rotate an eccentric about said central shaft and thereby to cause the crushing head to execute a gyratory movement for crushing of material that is introduced in the crushing gap. The central shaft has a cavity in which are accommodated an anti-reverse and a torque limiter, the anti-reverse and the torque limiter being adapted for connection to said crushing head for restricting spinning.

Abstract: The apparatus is a gyratory crusher in which all the wear parts can be removed and replaced from the top of the crusher, thus eliminating the need to remove large, heavy parts from below the crusher. This is accomplished by constructing the crusher so that the eccentric and the piston assembly can be lifted up and out sequentially. The piston assembly then includes all the wear parts within the lowest assembly, the hydraulic support, so that those parts can be replaced without access to the underside of the crusher. If necessary, the hydraulic support within which the piston assembly is held can also be removed from above the crusher.

Abstract: A dust-proof structure of a cone crusher below a cone core of the cone crusher includes primarily a dust ring which is suspended under the cone core, allowing the dust ring to operate concurrently with the cone core. Lubricant oil is provided between the dust ring and the cone core, enabling the dust ring to be tightly attached with a lip part of the cone core and operate successfully. The dust is prevented from entering into the cone crusher by ineffectiveness of a dust-proof function. Furthermore, a dust collar is attached under the dust ring, and an adjustment washer is provided between the dust collar and the cone core. When the dust ring is worn out, the adjustment washer is removed, and the dust ring is tightened again by screwing elements, thus preventing the dust from entering into the cone crusher due to the ineffectiveness of the dust-proof function.

Abstract: A gyratory crusher includes a crushing head on which a first crushing shell is mounted, and a frame on which a second crushing shell is mounted. The second crushing shell defines, together with the first crushing shell, a crushing gap. The gyratory crusher includes a space adapted to hold a liquid. The space is defined by a piston and a cylinder, any one of the piston and the cylinder being formed at least partly of a substantially vertical shaft around which the crushing head is arranged. The space is adapted to form, together with the liquid, a cushion, thereby enabling the cushion to serve as a thrust bearing and transmit vertical forces from the crushing head to the frame.

Abstract: It has been said that the wheel is the greatest invention of all time; when horses or oxen pulled wagons, dirt roads or no roads sufficed, but the wheels of modern transportation require paved roads for cars and trucks, concrete air strips for airplanes, ballast for railroads, concrete for dams, buildings, and many other things. Rock is the material that answers all these needs, but rock must be crushed to usable sizes. Big boulders or quarried rock are crushed by primary stage jaw or very large gyratory crushers that reduces the rock to sizes that second stage crushers can accept, and if the rock needs to be very small a third stage is used. Cone crushers are the crushers of choice for second and often for third stage crushing which is the type crusher of this patent application.

Abstract: A crushing chamber is formed between a concave liner and a mantle liner. The concave liner has a first area surface having a length of T to ?2T; a second and a third area surface; which surfaces are gradually inclined from the side of the inlet for the crushing chamber. The mantle liner has a first tapered surface having a length of greater than T, a cross angle of less than 20° and an inclination angle of greater than 60°; a second tapered surface having a length of greater than 0.5T and a cross angle of 5° to 10°; and a third tapered surface having an inclination angle of 45° to 50°. The area surfaces as well as the tapered surfaces are continuously arranged in a curvilinear manner. The shapes enhance the throughput of goods in a good fine-crushing performance, reducing the uneven abrasion due to the action.

Abstract: A dust seal system for a gyratory crusher having a shaft and a frame includes a bracket attached to the frame, a dust seal, and a collar. The bracket has a slot into which the dust seal is disposed, and the collar is in contact with the seal during crusher operation.

Abstract: A socket seal for a gyratory crusher is comprised of a ring with a pair of lips extending therefrom. The ring can have an outwardly expanding dovetail which is inserted into a slot in the piston or hemispherical bearing socket. The seal prevents downward flow of oil from the lubricated space between the hemispherical bearing ball and socket.

Abstract: A cone rock crusher for crushing rocks into sized aggregate material, including an improved protective seal that prevents external contaminants from entering the crusher's lubrication system. The seal is a rotating, self-cleaning, socket sealing ring with a magnetic safety release device which protects the flexible membrane seal from damage.

Abstract: The machine is comprised of a main body (32), a bonnet (14) which rests on the upper frame of the main body (32) and a concave holder (66) threadably inserted into the bonnet (14). The bonnet (14) is maintained in intimate contact with the main body (32) by means of a plurality of tramp iron cylinders (18) while the concave holder (66) is screwed into the bonnet (14) by means of an adjusting gear (16) and matching pinion (58). The concave holder (66) is locked in position within the bonnet (14) by means of a plurality of locking cylinders (60) positively engaging a locking slide ring (64). A mantle (70) covered male conical member (28) is driven by a crown gear (36) and pinion (52) in an elliptical rotation within the confines of a concave die (68) thus crushing the raw rock on each near pass.

Abstract: A coal-burning utility electrical power generation plant includes a mill pulverizing coal and supplying same to a boiler for combustion. The boiler has a bottom ash hopper for receiving combustion products including clinkers, and a clinker grinder for grinding the clinkers. The clinker grinder includes a rotary drum in a grinding chamber and having grinding teeth and driven by a rotary shaft extending through a stuffing box assembly. The stuffing box assembly has a flushing fitting for supplying flushing fluid thereto and along the shaft and into the grinding chamber. A seal permits flushing fluid flow from the flushing fitting into the grinding chamber, and blocks reverse flow. Long life is provided without a grease fitting, and leakage is substantially reduced.

Abstract: A gyratory crusher having a frame (1) and in the frame an eccentric shaft (3) rotatable around a vertical shaft in the frame, with a vertical inclined hole in it. A main shaft (4) is supported by bearings in the hold of the eccentric shaft, a supporting cone (5) being attached to the upper end of said main shaft (4). Around the main shaft, below the supporting cone (5) there is a sealing cover (10) covering the eccentric shaft. The upper edge (12) of the sealing cover (10) is sealed against the main shaft (4) by means of a sealing member (13), the outer edge of which has been fitted in an annular groove (17) on the inner edge (12) of the sealing cover (10). The face-to-face arranged upper and lower surfaces so the part (13") of the sealing member (13) in the groove and the groove (17) of the sealing cover (10) are inclined so that their outer edges are higher up than their inner edges.

Abstract: A conical gyratory grinder-crusher having a rigidly supported outer frustroconically shaped grinding-crushing member and an inner conical grinding member supported on a wobble mechanism which is in turn adjustably supported by air bellows so as to adjust the spacing between the inner and outer grinding-crushing members defining the grinding-crushing cavity, and therefore the particle size of the ground material. The bottom of the grinding-crushing cavity is closed by a flexible member. The flexible member seals the bottom of the grinding-crushing cavity. A slurry of fines or ground material is discharged from the grinder-crusher through grate discharge outlets provided in the lower portion of the inner conical grinding-crushing member.

Abstract: A gyratory crusher having a frame with a lower frame portion, a crusher head, a mounting mechanism for pivotally and gyrationally mounting the crusher head on the lower frame portion such that the crusher head operably gyrates between a closed side setting and a corresponding open side setting, a seal mechanism for operably protecting the mounting mechanism. The seal mechanism includes a flexible member having an outer edge, sealingly connected to the crusher head, and an inner edge, sealingly connected to the lower frame portion by an outer bearing race secured to the inner edge, an inner bearing race secured to the lower frame portion, and bearing balls captured between the outer and inner bearing races. The flexible member may have a single wall structure with a corrugation-like configuration, or a double wall structure with an inflatable bladder therebetween.

Abstract: The gyratory crusher includes a bowl which defines a chamber for receiving material to be crushed and a discharge opening at the base thereof through which crushed material is able to discharge. A crushing head is mounted in the bowl at an offset position with respect to a central axis of the bowl, and a drive assembly is operable for driving the crushing head within the bowl for imparting gyratory motion to the head about a gyratory axis inclined with respect to and intersecting the central axis, whereby frangible or friable material received into the chamber is subjected to crushing between an inner peripheral surface of the bowl and an outer peripheral surface of the head by the gyratory motion of the head.

Abstract: A conical gyratory mill for regrinding, milling or fine pulverization of materials, having a milling media, such as milling balls, located in the milling space between a milling bowl and a milling head. The material to be milled is introduced into the top of the milling space and is milled as it descends through the milling space by interaction with the milling balls, milling bowl and head. A fluid is introduced at the bottom of the milling space and is discharged at the top of the milling space, carrying with it material which has been milled to the desired degree of fineness.

Abstract: A protection arrangement for a hopper seal in a conical crusher having a material feed hopper located within the upper portion of the crusher bowl, over the crusher bowl liner. The protection arrangement preventing material and liquid flowing from the hopper into the crusher bowl from flowing against and abrading components of the hopper seal. The protection arrangement including an upwardly extending lip on the bowl liner which is received within a discharge hole in the bottom of the hopper.

Abstract: A gyratory crusher includes a flexible dust seal having an outer edge attached to a cone head of the crusher and to an outer of a ball-bearing seal, an inner race of which is attached to a mounting arrangement for rotationally mounting an eccentric member about a crusher axis with a pair of taper bearings and for rotationally mounting the cone head about a cone head axis offset from the crusher axis. The cone head is also mounted on a plurality of hydrostatic bearings. A mantel of the crusher is attached to the cone head by a removable cap nut and mantel stud. The crusher includes a self-contained lubricating system and a hydraulic tramp iron relief system with connections contained internally within structure of a lower frame portion of the crusher. The crusher includes a drive gear centered about the crusher axis and attached directly to the eccentric member.

Abstract: The present invention relates to a gyratory cone crusher having an eccentric member mounted within a lower main frame for rotational motion relative thereto. Disposed within the eccentric member is a crusher head assembly defining a first crushing surface which is adapted to gyrate relative a second crushing surface included within an upper bowl assembly attached to the main frame. Rotation of the eccentric member is facilitated by a plurality of V-belts extending between the eccentric member and a drive motor. Disposed between head assembly and the eccentric member and the eccentric member and the main frame are first and second bronze bearings which are interfaced to a lubrication system.

Abstract: A gyratory rock crusher having a base seal and a cone seal. The cone seal has a recess for receiving a projecting portion of the base seal, and these portions have cooperating upper and lower spherical surfaces arranged for relative parallel movement upon gyratory movement of the cone. The projecting portion has a thickness less than the width of the recess and springs are provided for holding the base seal upwardly against the cone seal to provide sealing engagement between upper surfaces of the two seals and to provide a space between lower surfaces thereof. Forced air is moved into the recess by a plurality of ducts in the projecting portion and discharge of forced air is through the lower space whereby to block the entrance of contaminants into the crusher. A deflector is mounted on the end of the projecting portion to reverse movement of the incoming air and efficiently direct such air through the space for blocking the entrance of contaminants.

Abstract: A first annular seal member on the base of a gyratory rock crusher is associated with a second annular seal member on the crusher cone. These two seal members have cooperating spherical surfaces which rub slidably together in the gyratory movements. An air sealing chamber is formed by the sealing members and other portions of the crusher and is associated with an annular groove in the first seal member having an inlet with a forced air system in an arrangement wherein air currents intercept dust moving along the spherical surfaces and also carry such dust away from inner portions of the crusher.

Abstract: For cone crushers comprising an eccentrically-driven crushing cone, it is necessary to provide a labyrinth seal between the inwardly disposed eccentric drive and the crushing cone, the upper seal half thereof being connected to the crushing cone and the lower seal half thereof being connected to the eccentric drive. A new labyrinth seal is essentially distinguished in that helically extending fluids are provided on at least one wall of a cylindrical ring of the lower and/or upper seal half. It is thereby achieved that the slight air flow constantly emerge from the sealing gap and a penetration of dust into or, respectively, through the sealing gap is reliably prevented.

Abstract: A base member has a face surface arranged to face a load receiving member. A plurality of grooves are provided in the face surface and bearing inserts are supported in these grooves. Such inserts project beyond the grooves and terminate in end bearing surfaces arranged to be engaged by the load receiving member. Lubrication inlets comprise cross grooves communicating with the insert receiving grooves whereby to supply lubrication under pressure to the area between the inserts. The system is associated with a high pressure source whereby oil is arranged to be forced over the end bearing surfaces of the inserts to provide a hydrostatic support for the loading receiving member. A water cooling passageway is provided in the base member.

Abstract: A cone crusher for crushing stones comprises an outer shroud housing a shaft driven of conical swinging motion at the middle portion whereof there is provided a crushing or milling cone, cooperating with a shroud conical ring to define an upward widening space therebetween, a rotating bush being provided for housing a hydraulic piston supporting, through an axial roller bearing, the bottom end of the shaft arranged substantially concentrical to the piston.

Abstract: A gyrating cone-shaped head cooperates with a stationary bowl support to crush rock or the like admitted into the crusher. The gyrating action of the head is accomplished by an off-set shaft arrangement for the head driven by a rotatable eccentric member. Input drive for the crusher rotatably operates the eccentric member through an independent coupler for improved gear alignment, operation and maintenance. The head has gyrating support on a dished bearing surface of the main frame, and hydrostatic pressure is admitted between the head and the frame support to minimize wear. Also, a fluid lift is provided for portions of the drive apparatus to support such parts and eliminate thrust loading caused by the weight of such parts on a radial roller bearing, thereby prolonging the useful life of the bearing. An improved seal is provided between the head and the main frame and is of a structure to remain intact and to operate effectively under all normal operating conditions of the crusher.

Abstract: A gyratory crusher has a sealing device between a shaft and a body, the device comprising an annular chamber carried by the body, and containing liquid, and a rigid wall carried by the shaft and projecting downwards into the liquid, and extended downwards by a flexible skirt.