Abstract: An improved cone crusher wherein raw material is crushed between a gyrating mantle and a bowl liner above the mantle. Space between the mantle and the bowl liner is adjusted by moving the bowl liner upward, and the adjusting movement is automatically performed by hydraulic pressure applied evenly to the entire circumference, successfully meeting fluctuation of load and abnormal overload.

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: An improved cone crusher with an eccentrically driven crushing cone, crushing jacket outside of the cone defining a crushing nip therebetween, the cone is driven in an oscillating manner tilting about its vertical axis and is connected to a driven through a universal joint having a one way clutch connected between the joint and a drive shaft with a support for the cone and a cap having a reduced portion which can shear in torsion, and means for holding the cone on a support with controllable force.

Abstract: A cone crusher includes outer and inner cones (2, 3) with a discharge slot (5) between them, a shaft (7) of the inner cone (3), a means for adjusting the size of the discharge slot (5) and a means for imparting gyrations to the inner cone (3). The means for adjusting the size of the discharge slot (5) is a reciprocation mechanism (12) and the means for imparting gyrations to the inner cone is an unbalanced vibrator (17).

Abstract: A cone type crusher which has a crushing chamber constituted by a crushing head assembly and a conical cap ring securely fitted in a fixed frame, the crusher including an eccentric drive cylinder for supportng therein and driving a vertical main shaft of the head assembly for gyration. The eccentric drive cylinder is supported by bearings which are located in two vertically spaced positions to preclude frictional wear due to metallic contacts, and is vertically movable for the purpose of adjusting the exit clearance of the crushing chamber.

Abstract: A novel bearing construction for use in a cone crusher and the like in which an eccentric rotating in a frame and a crushing head gyrating in the inner periphery of the eccentric are movable up and down by hydraulic pressure. A cylindrical socket inserted in a sleeve of the frame is slidable up and down while the crushing head is supported by the upper part of the socket and the eccentric is supported by the lower part of the socket so that the bearing are prevented from wear and trouble during operation.

Abstract: A crusher with rotary crusher plates and a vertical main axis has plates (1,2) disposed one above the other and spaced apart to form between the plates an annular slot (4) having radial, outwardly converging crushing surfaces (1', 2'). Said plates are rotatable about axes (A,B) which are non-parallel; the lower plate (2) is driven and the upper plate (1) is provided with a central feed opening (3) with a feed funnel (5) projecting downwardly into the opening. During operation, the lower plate (2) is arranged to execute a simultaneous gyrating movement in an opposite direction in relation to its direction of rotation, the number of revolutions per minute of the gyrating movement being substantially higher than the number of revolutions per minute of the lower plate (2) about its axis of rotation (B). The crushing surface (2') of the lower plate (2) has a central, cone-shaped section (2") which projects upwardly into the central feed opening (3) of the upper plate (1).

Abstract: An inertia cone crusher includes a housing with an outer cone secured therein and an inner cone mounted concentrically with the outer cone on a spherical support. A bearing bush carrying an unbalanced mass member is installed on the inner cone shaft to engage with its spherical end thrust bearing a spherical support of the drive shaft of a power motor. A crank supporting a carrier member for engaging the unbalanced mass member is also secured to the drive shaft. The carrier member includes a weight unbalanced with respect to the axis of rotation of the unbalanced mass member, the weight having such mass and position that its static moment is about equal in value, and opposite to the static moment of the unbalanced mass member.

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 gyratory cone crusher having an eccentric member mounted for rotary motion on a spindle, the eccentric member having a lower skirt surrounding the spindle and an upper cylindrical portion extending upward from the spindle, the eccentric member being supported on the spindle by a V-flat thrust bearing located at the bottom of the skirt and a pair of radial bearings located inside of the skirt, a tapered crusher head is mounted on the eccentric member for gyratory motion within a bowl assembly, the crusher head is supported on the eccentric member by a radial bearing surrounding the cylindrical portion of the eccentric member, a thrust bearing surrounding the skirt, all of the radial bearings being interchangeable and the outside diameter of the thrust bearing being greater than the outside diameter of the V-flat thrust bearing, and a hydropneumatic piston and cylinder assembly for holding the crusher head on the base, the hydropneumatic assembly having a control circuit for selectively relieving the holding

Abstract: A bearing supporting system for cone crushers of the type which has a head center securely mounted on an upper portion of a main shaft for mounting a mantle thereon and has the main shaft supported by the eccentric drive shaft in radial direction, the support system including a self-aligning thrust bearing mounted on an intermediate portion of the mantle shaft, supporting the main shaft on the eccentric drive shaft through the thrust bearing.

Abstract: Oppositely facing surfaces have grooves in one of the surfaces and low coefficient of friction inserts in the grooves. The inserts have a thickness greater than the depth of the grooves so as to project from the grooves when seated therein for bearing against a facing surface and maintaining the two surfaces in spaced apart relation. Such inserts provide a reduced friction relation between the two surfaces whereby the two surfaces can be readily rotated between a working condition having a thrust load therebetween and a loosened non-working condition. Preferably, two or more of the grooves and inserts are provided, the inserts being held in the grooves by distorted portions in the walls of the grooves.

Abstract: A gyratory crusher comprises a housing having arranged therein an adjustment ring with an upper support of a crushing cone provided with a ball joint fixed in position in a cross-piece of the adjustment ring. The crushing cone has a shaft pressed thereinto and inserted by its upper end to the ball joint for the ball joint to be capable of displacement along the shaft. The crushing cone is placed on a spherical surface of a thrust element which bears on a cup member to slide thereon. The lower shank of the shaft is provided with an accentric rotatable by a drive means.

Abstract: The object of the invention is a cone crusher comprising a shaft mounted in a frame for oscillating movement, and a rotor which is rotatably mounted on the shaft and adapted to be rotated on the shaft by means of a drive and which has an out-of-balance weight so that the rotation of the rotor in conjunction with centrifugal force sets the shaft in gyratory oscillating motion, while a conical crusher head carried by the shaft is caused to roll on the inner side of a crushing mantle carried by the frame. Characteristic of the invention is that the cone crusher is equipped with a movable counterweight which is caused by the drive to perform a circular movement about the shaft at an angular displacement of substantially 180.degree.

Abstract: The gap between the bowl cone and the gyrating cone of a cone crusher, though adjustable by hydraulically lifting the bowl, is safely fixed during crushing by shims for vertical firmness and by a ring of wedge segments binding the side of the bowl. Both are held firm by spring washers, with no need to maintain a hydraulic pressure. For adjustment hydraulic jacks of one set release both shims and wedge, with the correct sequencing for removal of shims. A floater ring is normally pressed by one set of spring washers for clamping the shims. When it is pressed down hydraulically it first releases the shims, but further movement under influence of a small pump presses down the wedge segments, overcoming the spring washers which normally press the wedge segments for wedging. The shims are double shim plates some of which have slots that prevent removal of the right hand end until the left end has been swung free, and the others of which are just the opposite.

Abstract: A cone crusher features a "fine" head and a pair of adapters and associated mantles which allow conversion of the crusher from fine to coarse operation, or vice versa, without the need to change the head itself. Each adapter and its associated mantle can be put on or taken off the head as a unit.

Abstract: A gyratory cone crusher of the type having a crusher head assembly mounted on an intermediate member supported for rotary motion on a shaft to produce gyratory motion of the crusher head assembly within a bowl assembly. The intermediate member including a skirt surrounding the shaft and a stub shaft of reduced diameter extending upward above the shaft. The intermediate member being supported on the shaft and the crusher head assembly being supported on the intermediate member by roller bearing assemblies, the bearing assemblies being lubricated by a closed lube oil recirculating system, and an anti-spin assembly connected between the spindle and the crusher head assembly, the anti-spin assembly being self-aligning with respect to the crusher head assembly, and including a one-way clutch either of the linkage or cam type mounted in the spindle.

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: In a gyratory crusher, a main shaft having a tapered mantle supporting portion extending through a correspondingly tapered bore in the crusher mantle to support the mantle on the shaft, and a bearing sleeve fitted about the end of the shaft releasably securing the crusher mantle to the tapered portion of the shaft.

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: In a crusher having a gyratory conical crushing head that cooperates with an annular bowl, the bowl has a threaded connection with a frame member, to be adjustable up and down by rotation. A clamping ring, acting like a jam nut, also has a threaded connection with the frame member and is so connected with the bowl as to be constrained to rotate with it; but normally the bowl and clamping ring are biased towards one another under clamping force, to prevent bowl rotation. To release the bowl for rotation, pressurized air is injected between the bowl and the clamping ring, acting directly on them to overcome clamping force and being introduced via the helical passage defined by the threaded connection between clamping ring and frame member. Seals between the bowl and clamping ring, and between the bowl and frame member, prevent escape of the air.

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 pressure relief system for a gyratory crusher is disclosed in which two separate but interacting fluid assemblies function, respectively, to adjust the operating position of the crusher cone of the gyratory crusher and to control the pressure above which the pressure relief system is activated. The system operates to relieve excessive pressure caused by the introduction of uncrushable foreign matter into the crushing chamber and to facilitate the elimination of such matter from the crusher.

Abstract: Centerline of the pinion and gear is offset from the centerline of the bore in which the pinion bearing housing is contained. A change holds the bearing housing in operating position and is also operable to rotatably adjust the pinion housing, the O.D. of which is eccentric relative to its I.D. Thus rotation of the bearing housing within the bore effects the adjustment of the vertical height of the pinion relative to the driving gear.

Abstract: A gas distribution manifold arrangement and methods for the gas precharge of a plurality of associated hydropneumatic hydraulic accumulators. Each accumulator receives, as by an elastic bladder in the accumulator, a precharge of a pneumatic fluid such as nitrogen. Each accumulator has a corresponding gas inlet valve through which pneumatic fluid is admitted to the accumulator. A hollow gas manifold is provided and a separate conduit connects the corresponding gas inlet valve of each accumulator through a corresponding selector valve on the manifold to the interior of the manifold. With the gas inlet valve of each accumulator open, and all of the selector valves on the gas manifold open, charging gas admitted to the gas manifold flows in parallel paths to apply an equal gas precharge to all accumulators.

Abstract: A hydraulic accumulator particularly useful in connection with gyratory crushers of the type in which the crusher head and shaft are hydraulically supported so that when the crusher head encounters uncrushable material such as "tramp iron" the crusher head can move down to pass the tramp iron, causing at least some of the hydraulic fluid supporting the crusher shaft to be ejected to a hydraulic accumulator. A plurality of gyrations of the crusher may occur before the tramp iron passes. The accumulator chamber which receives the hydraulic fluid ejected from beneath the crusher shaft contains a gas precharged elastic bladder. Hydraulic fluid is admitted to the accumulator chamber through a poppet valve built into the accumulator structure, which valve is normally spring biased to a closed position against its valve seat.

Abstract: In a gyratory crusher the crusher head is mounted on a drive shaft which is driven by an eccentric. The eccentric is continually rotated to cause the head to gyrate for effecting the crushing of material. an antispin arrangement is provided to prevent rotation of the crusher head in the same direction as the eccentric under idling conditions or no load conditions. The antispin device includes a pair of ratchets one of which is coupled to the shaft and the other of which is formed on the end face of a piston which is held in the counterbore of the drive shaft by a spring. A rectangular torsion rod extends through the center of the piston into a clearance hole bored in the crusher head drive shaft. The top of the torsion rod is anchored in the spider cap of the crusher.

Abstract: In a crusher having a crusher head shaft which is adjustable under load in the vertical direction and passes through a drive eccentric, clearance must exist between the shaft and the inner eccentric bearing. Due to the constantly rotating crushing load which moves angularly in the same direction as the drive eccentric is rotating and relative to the shaft which is stationary or slowly rotating in a direction opposite to the direction in which the drive eccentric is rotating, the inner race of the inner bearing of the eccentric should be an interference fit on the shaft. If the inner race is not an interference fit on the shaft, rapid wear will occur on both the shaft and the bearing bore. To overcome these two opposing requirements of a loose fit for adjusting purposes and a tight fit for good bearing practice, a composite bushing assembly is provided.

Abstract: Eccentric assembly removal is accomplished by operation of the crusher head shaft piston exerting an upward pushing force on the eccentric assembly and simultaneously applying high pressure fluid to the eccentric outer bearing housing.