Abstract: A cone crusher, including a supporting device being arranged inside a cavity of a main shaft of the crusher. The supporting device is arranged to support a crushing head, and to be vertically displaceable for adjusting the width of a crushing gap. The supporting device has an upper portion enclosed by the crushing head, the upper portion being arranged to provide support to the crushing head. A lower portion extends downwards within the cavity of the main shaft, wherein the upper portion and the lower portion have different outer dimensions as defined transverse to the shaft axis. A pressure-active surface is formed at a transition between the upper portion and the lower portion so as to form a variable-volume compression chamber within the cavity below the pressure-active surface.

Abstract: A crusher device such as a cone or gyratory crusher is disclosed. The crusher device includes a shaft defining a first direction parallel to its length. The shaft includes an upper shaft end, a crusher head, and an overload safety device that couples the crusher head to the upper shaft end. The overload safety device includes a biasing device configured to bias the crusher head away from the upper shaft end in the first direction. The overload safety device is configured to permit displacement of the crusher head along the first direction relative to the shaft in response to a force acting on the crusher head in the first direction.

Abstract: A gyratory crusher main shaft assembly has a main shaft, an axially upper region of the main shaft including a tapered conical section with a protective sleeve friction fitted over the cone. To facilitate mounting and dismounting of the sleeve, at least one groove is indented within a radially external facing surface of the main shaft at the region of the cone to allow fluid to be introduced under pressure to the region between the sleeve and the cone.

Abstract: A drive mechanism for an inertia cone crusher having a drive transmission to rotate an unbalanced mass body within the crusher and to cause a crusher head to rotate about a gyration axis at a tilt angle formed by an axis of the crusher head relative to the gyration axis. A torque reaction coupling is positioned in the drive transmission between the mass body and a drive input component and is elastically displaceable and/or deformable. In particular, the torque reaction coupling is configured to: i) transmit a torque from the drive input to the mass body and ii) to dynamically displace and/or deform elastically in response to a change in the torque resultant from a change in the tilt angle of the crusher head so as to dissipate the change in the torque to the drive transmission.

Abstract: A dust seal for a cone crusher or gyratory crusher and a cone crusher or gyratory crusher are provided, wherein the crusher includes a stationary part having a dust collar, and a crusher head which is supported so as to be rotatable relative to the stationary part in a crushing direction of rotation and in an idling direction of rotation which is opposite to the crushing direction of rotation. The dust seal has a crusher head contact portion configured for directly or indirectly contacting the crusher head, and a dust collar contact portion configured for directly or indirectly contacting the dust collar crusher head. The dust seal is configured to impart a frictional force between the crusher head and the dust seal via the crusher head contact portion, and/or between the dust collar and the dust seal via the dust collar contact portion upon rotation of the crusher head at least in the idling direction of rotation.

Abstract: A cone crusher may include a crushing cone held on a driven eccentric bushing. The eccentric bushing may rotate in a radial direction about a spindle. The spindle may be fixedly clamped in a spindle receptacle provided in a housing lower part. The spindle may comprise a cylindrical upper bearing portion that is braced in a bore that forms the spindle receptacle by way of an upper mechanical clamping device.

Abstract: A gyratory crusher includes a frame and a crushing head which is arranged rotatably about a substantially vertical shaft. The frame has an upper frame portion and a lower frame portion. The lower frame portion includes a hub. The hub has a centralized arranged through hole with a center axis extending through the hole and the hub. The hole is arranged to cooperate with the shaft being rotatably arranged in the hole. The hub is connected by arms to the lower frame portion and includes a drive ring pocket.

Abstract: A method for detecting tramp material in an inertia cone crusher having an outer crushing shell and an inner crushing shell is provided. The inner crushing shell is supported on a crushing head. The crushing head is rotatably connected to an unbalance bushing. The unbalance bushing has an unbalance weight for tilting the unbalance bushing when it is rotated, such that the crushing head will gyrate about a gyration axis, the inner crushing shell thereby approaching the outer crushing shell for crushing material in the crushing chamber formed therebetween. The method includes the steps of measuring at least one of a position and a motion of the crushing head; obtaining, based on the measurement, a gyration value; comparing the gyration value with a gyration reference value; and determining, based on the comparison, whether to issue a tramp material warning signal indicating the presence of tramp material in the crusher.

Abstract: A liner system, adapted for use with a rock crusher having a support bowl and a concave ring. The liner system comprises a collet that is adapted to apply a force to the concave ring and a collet adjuster that is adapted to lower and raise the collet, in the preferred liner system, the concave ring is removably retained in the support bowl of the rock crusher by the liner system. A method for adjusting a collet comprising providing such a liner system and adjusting the collet adjuster so as to removably retain the concave ring.

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 is provided that has a crusher head, an eccentric assembly connected to the crusher head, a bushing positioned between the eccentric assembly and the crusher head, a retaining member, and a plurality of fasteners. The retaining member has an opening and a plurality of holes. The retaining member is positioned adjacent to the eccentric assembly such that a portion of the eccentric assembly is within the opening. Each fastener extends through a respective hole to the crusher head. The retaining member is positioned adjacent to the crusher head and the eccentric assembly such that the retaining member is decoupled from the bushing. The cone crusher is preferably configured to crush rock, stone, ore or minerals. A method of making or retrofitting a crushing device such as, for example, a cone crusher or other gyratory crusher, is also provided.

Abstract: A gyratory cone crusher with a conehead centerline and a main centerline being skewed and non-coplanar with respect to each other. The conehead exhibits an elliptical movement path which results in faster throughput and enhanced cubicity performance.

Abstract: A gyratory crusher has a crushing head on which a first crushing shell is mounted, a frame on which a second crushing shell is mounted, and a driving device, which is arranged with a rotating eccentric to cause the crushing head to execute a gyratory movement for crushing of material. The crushing head is connected to the frame of a rotation-restricting arrangement, which comprises a beater in a tank. Spinning of the crushing head is restricted by the beater being braked, during operation of the crusher, by a liquid contained in the tank.

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: A conical crusher, comprising: an upper housing; a tubular axle lodging a supporting rod. Inside the upper housing is mounted a cone head being axially journalled onto a spherical bearing carried by an upper end of the supporting rod and said cone head being radially and eccentrically journalled around the tubular axle. The supporting rod has a lower end thereof fixed to a piston of a hydraulic cylinder in order to operate as a support means for the cone head and also as an actuator to vertically displace the cone head and adjust the opening of the crushing cavity and also as a protecting means, reducing the hydraulic pressure to prevent overloads. The proposed solution further provides a locking hub mechanism in the cone head.

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: 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 variable throw eccentric cone crusher. The cone crusher comprises a frame, a crusher head supported on the frame for gyration about a first axis, a bowl supported on the frame in spaced relation to the crusher head, and a mechanism on the frame for varying the eccentricity of the gyration of the crusher head. An eccentric member engages the crusher head and is eccentrically pivotable about a second axis radially offset from the first axis. The eccentric member is adjustable to vary the eccentricity of the gyration of the crusher head.

Abstract: An eccentric cone crusher having multiple counterweights. More particularly, the present invention provides a cone crusher including a frame, a crusher head for eccentric rotation about an axis, an eccentric member supporting the crusher head and having a center of gravity off the axis of eccentric rotation, and at least two counterweights attached to the eccentric. Utilizing more than one counterweight permits greater flexibility in positioning the counterweights, and minimizes moments and other stresses on the apparatus.

Abstract: A gyratory crusher includes a frame structure; an eccentric member rotatably mounted to the frame structure about a first axis; a main shaft rotatably mounted to the eccentric member about a second axis angularly offset from the first axis; a crusher head mounted to the main shaft and supported by a plurality of hydrostatic bearings, mounted on the frame structure in abutting engagement with the crusher head; a first drive mechanism for rotating the eccentric member about the first axis; and a stroke adjusting mechanism having an outer race continuously and dynamically rotatable about a third axis, angularly offset from both the first and second axes, for adjusting the angular offset of the second axis relative to the first axis. A hydraulic drive mechanism, including a hydraulic motor and a rotary hydraulic connector, distribution lines and ports, for distributing pressurized hydraulic fluid to the hydraulic motor, is provided for rotating the outer race relative to the eccentric member about the third axis.

Abstract: An angle .theta. formed between a horizontal line passing through the contact point P and a slant surface of a mantle based on an empirical rule corresponding to the vertical distance L ranging from the reference line S to the contact point P of the mantle continued to vary due to abrasion is inputted in advance into an angle inputting and outputting device, the angle .theta. corresponding to the vertical distance L detected by a distance sensing device in reference to an angle inputted value is selected and at the same time the selected angle is inputted into the distance calculating device, a product of a distance difference .DELTA.L between the contact point P of the concave and the contact point P of the mantle and a cosine value of the angle .theta. is calculated by the distance calculating device, resulting in that an inputting operation for the angle .theta. can be eliminated, so that a stop time of the cone crusher is reduced and an operating efficiency of the cone crusher is improved.

Abstract: A conical crusher head of a gyratory cone crusher is supported by a spider arm cradle. Radially disposed and circumferentially evenly spaced spider arm type support members of the cradle extend outwardly through an annular material discharge path in the lower portion of the crusher and through the generally cylindrical frame of the crusher. A gyratory drive mechanism is disposed annularly about the material flow path region and is coupled to the head support members to gyrate the head.

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 novel supporting structure for the crushing head of a cone crusher in which an eccentric rotating in a frame and the crushing head gyrating in the inner periphery of the eccentric are movable up and down by hydraulic pressure, characterized in that a cylindrical socket is inserted in a sleeve of the frame which is slidable up and down while the eccentric and the crushing head are supported by a hydraulic mechanism mounted on the upper end of the sleeve, thereby reducing the overall height of the cone 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 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 method and apparatus of comminuting ore-like material to produce a disproportionately large volume of flakier product which is easily and more efficiently ground in a mill, wherein the method includes the application of a stream of liquid all around the inlet of a conical crusher, increasing the speed and reducing the throw of the crusher to produce a generally flaky product, crushing the ore in the presence of the liquid and passing the ore and liquid slurry directly to a grinding mill.

Abstract: A conical crusher having a power draw of approximately 1,000 Hp and capable of being installed in a conventional crusher foundation is provided with an annular frame shell with support means capable of withstanding the higher than normal crushing forces, a hydraulic circuit capable of counterbalancing the crusher bowl while it is in a raised position to allow material to be cleared from a jammed crusher, and a mechanical anti-spin head bushing. A method is provided for increasing the production of conical crushers by altering head throw and diameter, increasing the power draw and increasing the internal volume of the crusher.

Abstract: Vibratory crushing apparatus is disclosed including a mandrel support housing suspended on a frame structure and providing floating support for a vertically arranged mandrel. Upper and lower collar housings are arranged upon the mandrel support housing and define upper and lower faces for crushing interaction with the mandrel. A shaft extends along the mandrel axis on bearings with opposed eccentric masses attached to its ends by hinges. The circumferential face on the upper collar is tapered for receiving relatively large materials to be crushed. Components of the crusher are of modular construction to facilitate repair and maintenance and a cylindrical ring secured to a central portion of the mandrel functions in combination with the upper and lower collar members to form a passage for conducting material to be crushed through the apparatus.

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 vibratory crusher and method of operation are disclosed wherein an elongated mandrel has a rotatable shaft extending along its axis with eccentric masses mounted in balanced and opposed offset relation on opposite ends of the shaft, the mandrel being supported in a manner permitting floating gyratory motion of its ends which are arranged in spaced apart relation within first and second relatively fixed reaction collars or cones, the shaft being driven in rotation whereby the eccentric masses cause the ends of the mandrel to gyrate relative to the reaction collars or cones for producing a vibratory crushing effect therebetween.

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.

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 mill or crusher useful for crushing and grinding material employing mechanical vibratory drive force at a sonic frequency. A drive shaft having orbiting eccentric weight means fixedly attached thereto and having freedom of motion both rotationally and laterally is rotatably driven by a drive motor to generate quadrature related vibratory force components in the drive shaft. Rotatably supported on the drive shaft by means of suitable bearings is a driving member having mass (inductive) inertia in said sonic frequency range. A "slave" member is freely supported on vibration isolation members in external concentricity with the driving member so that it is effectively in a "floating" condition, thus presenting a mass reactance in said sonic frequency range. Material to be milled or crushed is fed in the gap between the driving member and the free-floating "slave". Cycloidal force is delivered from the shaft to the driving member to precess or roll around on the inside wall of the free floating slave member.

Abstract: A portable hard rock crusher unit especially useful for low clearance underground mines. Material to be crushed is horizontally fed to the rotary crusher jaws. A curved convergent material flow-path is employed between two crusher jaws. The outer member of the crusher is a substantially stationary outer curved concave jaw and its inner jaw member is a cylindrical element mounted to give eccentric motion on a shaft. The inner member may freely rotate on its eccentric or it may also be rotatably driven. Material fed between the inner and outer jaw members of the crusher encounters a progressively narrower opening as it is crushed and moved by the peristaltic pumping action caused by the eccentric motion of the movable inner crusher element acting against the outer stationary jaw.

Abstract: A method for determining the adjustment of a crusher gap setting and/or crusher rate of wear in a gyratory crusher with hydraulic adjustment of the crusher cone height. The invention allows measurement of the gap while the machine is in motion and this data permits automatic adjustment during operation.