Gyratory rock crushers generally have a downwardly expanding central conical member which rotates or gyrates within an outer upwardly expanding frustroconically shaped member typically called a shell The shell can be comprised of two or more pieces e g a top shell and a bottom shell The central conical member generally has a wearing cover or a liner called a mantle A spider assembly rests on the top shell forming the top of the support structure for the machine.
A shaft extends vertically through the rock crusher This shaft is supported by a bearing in the spider assembly The central portion of the shaft tapers inwardly in an upward direction to form the central conical crushing member This portion of the shaft supports the mantle which moves with the shaft to effect the crushing operation The spider assembly is designed to support the shaft while allowing gyratory movement during operation of the machine Additionally the vertical position of the shaft is controlled by a piston arrangement in the spider.
Therefore it would be advantageous to have a sleeve and head nut arrangement that does not require threads on the shaft Further there is a need for a head nut assembly that is self tightening in response to upward loads Further still there is a need for a compact and easily replaceable sleeve and head nut arrangement that does not require additional fasteners.
An exemplary embodiment relates to an attachment apparatus for a gyratory crusher including a shaft and a mantle disposed about the shaft The attachment apparatus has a sleeve disposed about the shaft defining a contact surface between the sleeve and the shaft and a head nut threaded onto the sleeve The radius of the shaft increases in an upward direction over at least part of the contact surface whereby the head nut retains the mantle with respect to the shaft in at least one direction.
Another embodiment relates to an attachment apparatus for a gyratory crusher including a shaft and a mantle disposed about the shaft The attachment apparatus has a sleeve disposed about the shaft and a head nut threaded onto the sleeve The sleeve is a continuous ring whereby the head nut prevents upward motion of the mantle.
Still another embodiment relates to a gyratory crusher having a shell a shaft disposed within the shell a mantle covering a portion of the shaft a head nut located above the mantle and a sleeve between the head nut and the shaft The sleeve is maintained and positioned on the shaft by means of a tapered contact surface between the sleeve and the shaft.
A still further embodiment relates to a method of assembling or repairing a gyratory crusher This method includes heating a sleeve placing the sleeve over a shaft cooling the sleeve to effect a shrink fit arrangement on the shaft and threading a head nut onto the sleeve.
Mantle Covers the head of the crusher to protect it from wear The 4 188 foot and smaller crushers have a one piece mantle The 5 189 foot and 7 foot crushers have two piece mantles upper and lower mantle Minimum Closed Side Setting Theoretically the tightest that a specific set of liners can be set at Due to fines in the feed.
FIG 1 is a vertical cross sectional view of the gyratory crusher and.
The chief difference between cone and gyratory or jaw crushers is the nearly parallel arrangement of the mantle and the cone at the discharge end in the cone crusher This is illustrated in Figure 5 2 Reduction ratios in the following ranges are common for cone crushers 61 81 for secondaries 41 61 for tertiary and quaternary crushing.
Crusher Specifiions Diameter pienfotowerk Crusher Wikipedia A gyratory crusher is one of the main types of primary crushers in a mine or ore processing plant Gyratory crushers are designated in size either by the gape and mantle diameter or by the size of the receiving opening jaw crusher minimum diameter oalebakkershoes Jaw Crusher.
A gyratory crusher uses a new head nut attachment apparatus The gyratory crusher has a shell a shaft disposed within the shell a mantle covering a portion of the shaft a head nut located above the mantle and a sleeve between the head nut and the shaft The sleeve is maintained in position on the shaft by means of a tapered contact surface between the sleeve and the shaft and the head nut.
SANDVIK EXPANDS ITS MID RANGE Sandvik Mining added to its CH800 series of mining cone crushers by launching two models in the mid range segment The new CH860 is designed for high capacity secondary crushing while the CH865 is intended for high reduction tertiary and pebble applications both feature higher crushing forces relative to mantle diameter and a 500 kW motor.
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