US3887143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyratory crusher
Assignee: Portec Inc
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Filing: 1974-05-28
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Granted: 1975-06-03
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Expires: 1994-05-28
Abstract
Abstract A gyratory crusher includes a bowl assembly adjustably positioned relative an annular support ring mounted atop a fixed peripheral frame. Radial flanges on the bowl are vertically located by shims and retainer brackets containing the flanges which are then interlocked relative the support ring by hydraulically actuated means. A segmented clamp ring intermediate the bowl and support ring is provided with hydraulically energized means for clamping the bowl assembly to the support ring while a plurality of fluid cylinder assemblies carried by the bowl assembly are subsequently operable to break loose the locking action of the clamp ring to permit readjustment of the bowl assembly. During operation of the crusher a plurality of fluid load relief cylinders interconnecting the support ring and peripheral frame yield, in a unique controlled manner, to permit elevation of the bowl assembly, clamp ring and support ring, when non-crushable material is fed into the apparatus.
Inventors
- 👤 George T Gilbert
- 👤 Anton W Chryst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:23
CPC Classifications
B; B02; B02C; B02C2/00; B02C2/02; B02C2/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
211 words
A crusher including, a peripheral frame provided with an uppermost annular V-way, a conical crusher mantle mounted within said frame, a bowl assembly disposed above said mantle and including a cylindrical body having an outer cylindrical periphery of lesser diameter than said peripheral frame, an annular support ring surrounding said bowl body and vertically displaceable relative thereto, said support ring provided with a downwardly facing annular cavity mating with said frame V-way and adapted to be supported thereupon, said support ring having an inwardly facing wedge surface radially spaced from said bowl body outer periphery, a segmented bowl clamp ring surrounding said bowl assembly intermediate said outer periphery and said support ring wedge surface, said segmented clamp ring having an outwardly facing wedge surface juxtaposed said support ring wedge surface, a plurality of bolts carried by each segment of said clamp ring and passing upwardly through said support ring, stop means on the upper distal portion of said bolts, fluid-actuated expansible means surrounding said bolts intermediate said stop means and said supporting ring whereby, actuation of said expansible means urges said clamp ring segments upwardly against said support ring as said two juxtaposed wedge surfaces force said segmented clamp ring radially inwardly to clamp said bowl assembly to said support ring.
Claim 2
Dependent Claim
211 words
A crusher including, a peripheral frame provided with an uppermost annular V-way, a conical crusher mantle mounted within said frame, a bowl assembly disposed above said mantle and including a cylindrical body having an outer cylindrical periphery of lesser diameter than said peripheral frame, an annular support ring surrounding said bowl body and vertically displaceable relative thereto, said support ring provided with a downwardly facing annular cavity mating with said frame V-way and adapted to be supported thereupon, said support ring having an inwardly facing wedge surface radially spaced from said bowl body outer periphery, a segmented bowl clamp ring surrounding said bowl assembly intermediate said outer periphery and said support ring wedge surface, said segmented clamp ring having an outwardly facing wedge surface juxtaposed said support ring wedge surface, a plurality of bolts carried by each segment of said clamp ring and passing upwardly through said support ring, stop means on the upper distal portion of said bolts, fluid-actuated expansible means surrounding said bolts intermediate said stop means and said supporting ring whereby, actuation of said expansible means urges said clamp ring segments upwardly against said support ring as said two juxtaposed wedge surfaces force said segmented clamp ring radially inwardly to clamp said bowl assembly to said support ring.
Claim 3
Dependent Claim
211 words
A crusher including, a peripheral frame provided with an uppermost annular V-way, a conical crusher mantle mounted within said frame, a bowl assembly disposed above said mantle and including a cylindrical body having an outer cylindrical periphery of lesser diameter than said peripheral frame, an annular support ring surrounding said bowl body and vertically displaceable relative thereto, said support ring provided with a downwardly facing annular cavity mating with said frame V-way and adapted to be supported thereupon, said support ring having an inwardly facing wedge surface radially spaced from said bowl body outer periphery, a segmented bowl clamp ring surrounding said bowl assembly intermediate said outer periphery and said support ring wedge surface, said segmented clamp ring having an outwardly facing wedge surface juxtaposed said support ring wedge surface, a plurality of bolts carried by each segment of said clamp ring and passing upwardly through said support ring, stop means on the upper distal portion of said bolts, fluid-actuated expansible means surrounding said bolts intermediate said stop means and said supporting ring whereby, actuation of said expansible means urges said clamp ring segments upwardly against said support ring as said two juxtaposed wedge surfaces force said segmented clamp ring radially inwardly to clamp said bowl assembly to said support ring.
Claim 4
Dependent Claim
211 words
A crusher including, a peripheral frame provided with an uppermost annular V-way, a conical crusher mantle mounted within said frame, a bowl assembly disposed above said mantle and including a cylindrical body having an outer cylindrical periphery of lesser diameter than said peripheral frame, an annular support ring surrounding said bowl body and vertically displaceable relative thereto, said support ring provided with a downwardly facing annular cavity mating with said frame V-way and adapted to be supported thereupon, said support ring having an inwardly facing wedge surface radially spaced from said bowl body outer periphery, a segmented bowl clamp ring surrounding said bowl assembly intermediate said outer periphery and said support ring wedge surface, said segmented clamp ring having an outwardly facing wedge surface juxtaposed said support ring wedge surface, a plurality of bolts carried by each segment of said clamp ring and passing upwardly through said support ring, stop means on the upper distal portion of said bolts, fluid-actuated expansible means surrounding said bolts intermediate said stop means and said supporting ring whereby, actuation of said expansible means urges said clamp ring segments upwardly against said support ring as said two juxtaposed wedge surfaces force said segmented clamp ring radially inwardly to clamp said bowl assembly to said support ring.
Claim 5
Dependent Claim
30 words
A crusher according to claim 1 including, breaking means carried by said bowl assembly and engageable with said clamp ring to vertically separate said juxtaposed wedge surfaces from one another.
Claim 6
Dependent Claim
25 words
A crusher according to claim 1 wherein, said frame V-way and support ring cavity each include a pair of tapered surfaces defining mating trapezoidal configurations.
Claim 7
Dependent Claim
19 words
A crusher according to claim 1 including, yieldable tie means clamping said support ring downwardly toward said frame V-way.
Claim 8
Dependent Claim
25 words
A crusher according to claim 1 including, fluid-actuated locking means operable to clamp said bowl assembly to said support ring in selected vertical relationship thereto.
Claim 9
Dependent Claim
109 words
A crusher according to claim 1 including, a plurality of adjustment flanges projecting radially and outwardly from said bowl body and overlying said support ring, a retainer bracket overlying each said flange and secured to said support ring, each said bracket having an interior opening surrounding one said flange and permitting of substantial vertical displacement of said flange within the confines of said opening, shim means insertable within each said opening above and below said flange to fill all free vertical space within said opening, and shim lock means carried by each said bracket operable to clamp said bowl flanges in fixed relationship to said brackets and support ring.
Claim 10
Dependent Claim
194 words
A crusher according to claim 1 including, a fixed vertical bearing shaft within said frame having a central vertical bore, an eccentric journalled about said vertical shaft, a crusher head supporting said mantle bearing-mounted upon said eccentric, drive means Engaging said eccentric for rotation thereof and for imparting gyratory motion to said mantle, an anti-spin assembly within said frame for limiting free spinning of said mantle during operation of said drive means when no feed material is present between said mantle and bowl assembly, said anti-spin assembly provided with a stationary fluid pump having a drive shaft extending upwardly through said bore and connected to said head, a pair of fluid ports in said pump, means constantly supplying fluid to the exterior of said pump in the area of said ports, one said port including a check valve whereby during normal crushing operation said drive shaft and pump rotates in one direction as fluid is drawn into said pump through said check valve and during no-feed operation the tendency of said shaft and pump to rotate in the opposite direction is substantially restricted as said check valve precludes exit of fluid from said pump.
Claim 11
Dependent Claim
54 words
A crusher according to claim 2 wherein, said clamp ring includes a plurality of circumferentially adjacent segments, and said breaking means includes a fluid-actuated lift cylinder, said support ring provided with an aperture beneath said cylinder, a release pin extending from said cylinder and through said aperture to abut two said clamp ring segments.
Claim 12
Dependent Claim
129 words
A crusher according to claim 4 wherein, said tie means includes a plurality of load relief cylindners attached to said frame beneath said V-way, each said cylinder having a tie bolt therein provided with a piston adjacent its lower end, the upper end of each said tie bolt projecting upwardly through said V-way and overlying support ring and having a nut affixed to its upper distal portion, a conduit supplying fluid to each said cylinder in series, a fluid accumulator mounted adjacent each said cylinder and provided with a separate conduit whereby, vertical displacement of said bowl assembly and the concurrent displacement of said support ring and tie bolt pistons displaces fluid from at least one said cylinder both toward its respective accumulator and toward said cylinder adjacent thereto.
Claim 13
Dependent Claim
35 words
A crusher according to claim 5 wherein, said fluid-actuated expansible means and fluid-actuated locking means comprise hydraulic washers, and a conduit connecting all said hydraulic washers in series for supplying fluid under pressure thereto simultaneously.
Claim 14
Dependent Claim
84 words
A crusher according to claim 6 whereiin, each said bracket includes a top cross head and a pair of depending side walls, said shim lock means including a stud passing downwardly through said cross head, a base plate attached to the bottom distal portion of said stud adjacent said support ring, and a hydraulic washer carried by the upper distal portion of said stud above said cross head to elevate said base plate and lock said shims and bowl flange relative said support ring.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |