US1873671A - Yielding release for crusher bowls - Google Patents

Description

Aug. 23, 1932. E. B. sYMoNs YIELDING RELEASE FOR CRUSHER BOWLS Filed Aug. 5. 1931 2 Sheets-Sheet 1 ffzwn fw afyaf @www y JM @in Aug. 23, 1932. E. B. sYMoNs YIELDING RELEASE FOR CRUSHER BOWLS Filed Aug. 5, 1951 2 Sheets-Sheet 2 E/U gg lf/ rE40 /2 Patented Aug. 23, 1932 UNITED STATES PATENT OFFICE EDG-AR IB. SYMONS, OF HOLLYWOOD, CALIFORNIA, ASSIGNOR TO NORDBEBG- MANUFAC- TUBING CO., OF MILWAUKEE, WISCONSIN', A CORPORATION 0F WISCONSIN YIELDlN G RELEASE FOR CBUSHER BOWLS Application led August 5, 1931. Serial No. 555,215.

My invention relates to an improvement in crushing machines and has for one object the provision of an improved yielding release for the bowl or concave of a ratory crusher. Another object is the provision of improved yielding means for normally holding the bowl fixed in redetermined crushing position. Other objects will appear from time to time in the course of the specification and claims.

The invention is more or less diagrammatically indicated in the accompaying drawings, wherein Figure 1 is a vertical section;

Figure 2 is a partial elevation; and

Figure 3 is a detail of a spring abutment segment.

Like parts are indicated by like symbols throughout the specification and drawings.

Referrin to the figures, A generally indicates a fixe main frame for the crusher. Its upper edge is provided with an outwardly projecting iange A1, the opposite sides of which are bevelled or inclined as at A2 A3.

. B generally indicates a shaft, on the upper end of which is mounted a' crushing head or cone B1 having an outer generally conic surface B2. The supporting means for the cone and shaft are omitted from the present drawings, since they do not of themselves form part of the present invention.

It will be understood that any suitable means may be employed for supporting and gyrating the shaft and head. B3 indicates a crushing mantle positioned upon the head B1. It may be held in position as by the sleeve B* and the locking member B5. The details of the locking means are omitted, since they do not of themselves form part of the present invention.

C generally indicates a bowl supporting ring which is positioned upon the flange A1. It is provided with a concavity generally indicated as C1, which receives the Han e A1, and which has inclined surfaces C2 3 opposed to the corresponding surfaces A2 A3 of the flange A1. The member C is provided with an internally screwthreaded portion C1.

D generally indicates the bowl structure proper, which may include an outer generally cylindrical portion D1l screwthreaded to mesh with the screwthreading C4, as at D2. Any sultable means may be employed for impart- 1ng relative rotation to the members C and D, whereby to effect vertical adjustment of the bowl structure D. D5 indicates a generally conic inner wall of the bowl structure, herein shown as overhan 'ng the head B1. The bowl liner D4 may e secured thereto in any suitable manner as by the lugs D5 engaged by the hooks or bolts D6 withthe adjusting shims D7 and the lock nuts D8.

It will be understood that in the normal use of the device, the bowl liner D4 is held normally fixed in the position in which it is shown, while the head, including the mantle B3, 1s gyrated to effect the crushing action. In order, therefore, to hold the ring C normally locked against the flange A1 in the osltion shown in Figure 1 I provide the ollowing means. I may employ a number of bolts E1 E11 which pass through apertures E1 E2 in the members A1 and C respectively. The bolts may be headed or provided with nuts at top and bottom. It will be noted, vas in Figure 2, that the bolts E are arranged in two series. E10 indicate bolts having heads E11 at the lower ends. The bolts E10 project upwardly through the ring C and through the upper segments E", being provided with upper nuts E12. Another set of bolts E14 are headed at the top as at E15, and project downwardly along the frame A, to support the lower segments E5 by means of the nuts E4. The upper and lower segments are provided with spring positioning abutments E16 and it will be noted from Figure 2 that these abutments on the lower segments are aligned with the heads E11 of the bolts E10, while the abutment E16 of the upper segments E6 are aligned with the bolt heads E15. The bolts E1o and E14 alternate, so that the springs E17 E16 of each series are alternately positioned by bolts passing through them and by the spring abutments E11 E1s and E15 En;l

G indicates an upper housing which may be positioned upon the member C within the upper springs E1". Preferably it extends above the top segments E5. The member G,

therefore, serves as a guide for the upper segments B6 and the springs E18, preventing any substantial lateral movement thereof. Similarly the main frame A serves as a guide for lie lower segments Et5 and the lower springs In the use of the presentl device, the upper and lower sets of springs are of sufiicient strength to hold the ring C, and thus the crushing liner D4, normally fixed in crushing position. In case tramp iron or other uncrushable material penetrates the crushing zone, the springs will permit the entire bowl structure, including the ring C, to tilt upwardly to permit the passage of the uncrushable material 0r to prevent the breakage of the crusher.

It will be realized that whereas I have described and shown a practical and operative device, nevertheless many changes may be made in size, shape, number and disposition of parts without departing from the spirit of my invention.v I, therefore, wish my drawings to be taken as in a broad sense illustrative and diagrammatic rather than as limiting me to the precise details of the present showing.

I claim:

. 1. In a gyratory crusher, a xed circumferential frame member, a crushing head and means for gyrating it, a bowl surrounding the head, supporting means for the bowl tiltably mounted upon the upper edge of the frame member, and yielding means for holding said supporting means normally fixed in relation to said frame, said means including a set of springs positioned above said supporting means and a set of springs positioned below said supporting means, abutment members confining the upper and lower ends respectively of said sets of springs, and compression members, extending respectively upwardly and downwardly from said bowl supporting means in securing relationship with the upper and lower abutment members respectively.

A 2. In a gyratory crusher, a fixed circumferential frame member, a crushing head and means for gyrating it, a bowl surrounding the head, supporting means for the bowl tiltably mounted upon the upper edge of the frame member, and yielding means for holding said supporting means normally fixed in relation to said frame, said means including a set of springs positioned above said supporting means and a set of springs positioned below said supporting means, abutment members confining the upper and lower ends respectively of said sets of springs, and compression members, extending respectively upwardly and downwardly from said bowl supporting means in securing relationship with the upper and lower abutment members respectively, said compression members including headed bolts, the heads of said bolts being adapted to serve as spring positioning abutments.

3. In a gyratory Crusher, a fixed circumferential frame member, a crushing head and means for gyrating it, a bowl surrounding the. head, supporting means for the bowl tiltably mounted upon the upper edge of the frame member, and yielding means for holding said supporting means normally fixed in relation to said frame, said means including a set of springs positioned above said supporting means and a set of springs positioned below said supporting means, abutment members confining the upper and lower ends respectively of said sets of springs, and compression members, extending respectively upwardly and downwardly from said bowl supportingmeans in securing relationship with the upper and lower abutment members respectively, the upwardly extending and downwardly extending compression members alternating.

4. In a gyratory Crusher, a fixed circumferential frame member, a crushing head and means for gyrating it, a bowl surrounding the head, supporting means for the bowl tiltably mounted upon the upper edge of the frame member, and yielding means for holding said supporting means normally fixed in relation to said frame, said means lncluding a set of springs positioned above said supporting means and a set of springs positioned below said supporting means, abutment members confining the upper and lower ends respectively of said sets of springs, and compression members, extending respectively upwardly and downwardly from said bowl supporting means in securing relationship with the upper and lower abutment members respectively, the upwardly extending and downwardly extending compression members alternating, each such compression member including a headed bolt, said bolt heads being adapted to serve as spring positioning abutments for springs of one set, the bodies of the bolts being adapted to serve as spring aligning means for spring of' the other set, the heads of the upwardly extending bolts abutting against the frame member, the heads of the downwardly extending bolts abutting against the bowl.

5. In a gyratory crusher, a normally fixed circumferential frame member, a crushing head within said frame member and means for gyrating it, a bowl, surrounding said head, said bowl being tiltably positioned upon the upper edge of the frame member, the frame member being provided with a flange outwardly extending about its upper edge, the bowl including a portion overlying said flange, and yielding means for holding the bowl normally fixed in relation to the frame, said means including a lower set of springs positioned about the frame member and vertically aligned beneath the fiange,

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and an upper set of springs vertically aligned with the lower set of springs and positioned above the portion of the bowl which overlies the flange, abutment means for the upper ends of the upper springs and for the lower ends of the lower springs, and compression members therefor, the compression e members for the lower set of springs connecting the overlying portion of the bowl with the lower abutment means, the compression members for the upper set of springs connecting the flange of the frame with the upper abutment means.

6. In a gyratory crusher, a normally fixed circumferential frame member, a crushing head within said frame member and means for gyrating it, a bowl surrounding said head, said bowl being tiltably positioned upon the upper edge of the frame member, the frame member being provided with a iange outwardly extending about its upper edge, the bowl including a portion overlying said ange, and yielding means for holding the bowl normally fixed in relation to the frame, said means including a lower set of springs positioned about the frame member and vertically aligned beneath the flange, and an upper set of springs vertically aligned with the lower set of springs and positioned above the portion of the bowl which overlies the flange, abutment means for the upper ends of the upper springs and for the lower ends of the lower springs, and compression members therefor, the compression members for the lower set of springs connecting the overlying portion of the bowl with the lower abutment means, the compression members for the upper set of springs connecting the flange of the frame with the upper abutment means, said compression members being headed, the heads ofthe compression members for each set of springs being adapted to serve as spring positioning abutments for the adjacent ends of the sp-rings of the opposite set.

7. In a gyratory crusher, a normally fixed circumferential frame member, a crushing head within said frame member and means for gyrating it, a bowl. surrounding said head said bowl being tiltably positioned upon the upper edge of the frame member, the frame member being provided with 'a flange outwardly extending about its upper edge, the bowl including a portion overlying said flange, and yielding means for holding the bowl normally fixed in relation to the frame, said means including a lower set of springs positioned about the frame member and vertically aligned beneath the flange, and an upper set of springs vertically aligned with the lower set of springs and positioned above the portion of the bowl which overlies the flange, generally circular abutment means for the upper ends of the upper springs and for the lower ends of the lower springs, and compression members therefor, the compression members for the lower set of springs connecting the overlying portion of the bowl with the lower abutment means, the compression members for the upper set of springs connecting the iange of the frame with the upper abutment means, the frame being adapted to serve as a guide for the lower set of springs and the lower abutment means, and an additional housing member, positioned above the bowl, adapted to serve as a guide for the upper set of springs and the upper abutment means.

Signed at Hollywood, county of Los Angeles and State of California, this 24th day of July, 1981.

EDGAR B. SYMONS.

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