US1894601A - Crushing machine - Google Patents

Description

Jan. 17, 1933. E, B, SYMONS 1,894,601

CRUSHING .MACHINE Filed Feb. 20.. 1929 A 2 Sheets-Sheet 1 Jan. 17, 1933. E. a. sYMoNs CRUSHING MACHINE Filed Feb. 20. 1929 2 Sheets-Sheet 2 Patented `lan. 17, 1933 UNITED STATES EDGAR B. SYMONS, OF HOLLYWOOD, CALIFORNIA, ASSIGNOR TO N ORDBERG MANU- FACTURING COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN' CRUSHING MACHINE Application led February 20, 1929. Serial No. 341,336.

My invention relates to a crushing device, and particularly to an improvement in crushing devices in which a cone is gyrated in a normally fixed concave or bowl.

One object of my invention is to provide a bowl, and supporting means therefor, which shall be normally maintained in fixed position but which shall be adapted to yield to a predetermined pressure in excess of normal crushing pressure or to permit the passage through the space between cone and bowl of uncrushable material. Another object is the provision ot improved yielding means or members whereby this yielding is permitted. Another object is to provide an improved lubricating means and dust preventing means for a cone. crusher of the type described. Other objects will appear from time to time in the course of the specification and claims.

Certain of the material shown in the present application has been divided therefrom and is claimed in the co-pending divisional application 467,237, filed on July 11, 1930. This divided material includes the employment of individual sets ot springs as shown for example in Figures 2, 3 and 4, and the screw-threaded adjustment shown herein in Figure 1.

I illustrate my invention more or less diagrammatically in the accompanying drawings, wherein- Figure l is a vertical axial section;

Figure 2 is a horizontal section on the line 2-2 of Figure l; and

/ Figures 3 and 4 are'partial horizontal sections through variant forms of my device.

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

Referring to the drawings, A `generally indicates the main trame of a crushing device Which may be formed at the bottom ot any suitable base A1, secured to a supporting surface,A for example by the bolts A2. A main frame section is shown, as in Figure 2, as cylindrical in cross-section. It is illustrated as terminating at its upper edge in a fiange. B, the top of which is inwardly beveled as at El and outwardly beveled as at B2 to receive the upper frame section or ring, generally indicated as C. The flange B projects outwardly from the body A of the frame. 0r, stating it otherwise, the body or trame A is recessed within theouter periph ery of the fiange B. The purpose of this recessing or offset will later appear. The member C is provided with a laterally extending Yflange o1 flanges C1, outwardly extending from the `generally cylindrical portion C2, the cylindrical portion being inwardly screwthreaded as at C3. The fiange or fianges C1 are provided with the beveled surfaces C* and C, opposed to the beveled surfaces B1 and B2 of the portion B.

The member B is apertured to receive a plurality of aligning members, indicated as the pins D, with the flanges l)1 and the upwardly projecting portions D2 shown as slightly tapered and rounded at the tip.

Positioned about the main frame A are a plurality of groups ot springs E. The tops and bottoms ot said springs are compressed between a plurality of sets ot abutment members or segments, an upper abutment E1 and a lower abutment E2 being provided tor each set of springs E. lVhile I do not wish to be limited to any particular number or arrangement of springs, I have indicated. in Figure 2, as a practical arrangement, a plurality of sets of springs. five springs to a set. the springs being arranged in staggered relation with three springs arranged in an arc adjacent the face of the main frame and two springs positioned more distantly therefrom. In order to maintain the compression of the springs and to provide a bond between the lower abutment E2 and the member C1, I employ a plurality of bolts E3 for each set of springs. said bolts being held at the, top as at E4 and being provided at the bottom with locking and adjusting nuts E5, whereby the compression of the springs may be controlled. As an illustration. I have indicated three such bolts E3 for each group ot springs, two of said bolts being aligned with surrounding springs.

The member D serves to'center the other ot said springs, and it will be understood that, where necessary, axial lugs or plugs, such as E, are employed to maintain the springs properly aligned. E7 indicates an outer rim about each such abutment member E1 or E2. It will be observed. as in Figure l, that the effect cf the spring assembly will be to draw the flange or ring G1 downwardly against the flange or ring B. and to maintain the frame portion C2 fixed in position in relation to the frame A.

In screw-threaded relation to the spring C2 is the bowl or concave supporting frame, generally indicated as G. It includes the cylindrical outer frame portion G1, screwthreaded as at G2 in opposition to the screwthreaded portion C3 of the member C2. It will be understood that rotation of the member G1 in relation to the member C raises and lowers the'bowl or concave, the means for effecting such rotation and adjustment being not indicated herein. since they form of themselves no part of the present invention. Inuardly and upwardly projecting from the lower edge of the member G1 is thebowl support G1, which is connected to the outer portion G1 as by the webs G4. The portion Gsis apertured as at G to permit the passage of securing lugs GrT upon the bowl proper G. Gs indicate any suitable locking means whereby, by engagement with the lugs G7, the bowl G can be brought up against the member G3. The details of these locking means are not described with greater fullness herein, being the sub-ject of a co-pending application, No. 310.988 filed-on the 8th day of October, 1928.

Positioned upon the ton of the member C2 is a member, generally indicated as H. It includes a cylindrical portion H1 and a generally horizontal top portion H2` in which are formed a plurality of apertured bosses Hs, which receive the heads H4 of the bolts H. H" is a nut upon said bolt, adapted to engage the lateral flanges or projections H'I which is associated with the member G. whereby the tightening of the bolt H will draw the member H downwardly against the upper edge of the frame member C1, or rather, will raise the member G, in relation to C2. It will be understood that the members H7 project into pockets in the member H, whereby relative rotation of the members G and H is prevented.

Positioned within the inner periphery of the port-ion H2 of the housing H is a cylindrical member J, within which is a hopper formed of segments J1 resting upon a hopper shaped supporting surface J2. which in turn is secured to the upper edge of the portion G2, as by the bolts J4. rlhe details of this hopper structure do not, of themselves, form a part of the present invention and will not be further considered. The ring J5 may be employed to engage the vtops of the segments J1, to hold them in position, the ring J 5 being held by the straps or abutments J bolted as at J to the upper edge of the ring J. A wiping member J8 is provided intermediate the ring J and the housing H.

K generally indicates a generally cylindrical bearing sleeve associated with the main frame A and lying in the vertical axis thereof. Positioned therewithin is the eccentrically apcrtured sleeve K1, associated with the gear K2, which, meshing with the driving gear K, may be rotated from any suitable power .source not herein shown. The crushing shaft K4 penetrates the eccentric aperture K5 of the sleeve K1 and is gyrated in response to the rotation of said sleeve.

L generally indicates the bearing and guard member positioned above the sleeve K. ltis indicated as having an upper spherical bearing surface L1, and is surrounded by the oil sump or peripheral passage L2, in which flows any suitable oil, discharge passage L3 is in communication with the space formed by the gear box K10 about the gear K2. L4 indicates a flange extending outwardly from the sump L2 and having an upper spherical bearing surface L5 and a lower spherical bearing surface L. both said surfaces being preferably concentric with the. main spherical bearing surface L1. L'I indicates an oil groove in the face of the surface L", provided with passages Lg extending to the bottom of the oil sump.

M generally indicates a cone mounted on the upper end of the shaft K4 and is provided with a spherical bearing surface M1, conforming to and resting upon the surface L1. M2 indicates an axial oil passage in the shaft K4. which is in communication with the lateral passage M3 with the oil induct M extending to the lower bearing surface M1. It there communicates with the circumferential oil passage M5` which in turn communicates with the radial passage M1 extending to the wall of the shaft K, and being adapted to deliver oil downwardly along said shaft to the gear box K10 or to the bearing surface between shaft and eccentric sleeve. The crushing head M is provided with the outer conic surface portion. generally indicated as M7. and terminating at its lower edge in the downwardly extending apron M8. M9 indicates an inner apron positioned exteriorly of the surface M1. The, members M8 and M9 have opposed parallel surfaces, in-

'dicated as M10 and M11, Within which .slides the oil wiping member generally indicated as 0, and having the flange O1 and a spherical bearing surface opposed to the surface Lu and a lower flange O2 opposed to the surface L". Any suitable means, for example the springs O3, are employed for thrusting the member OA downwardly and for maintaining its upper member O1 closely opposed to the upper bearing surface L5 of the member L4.

Positioned upon the head M7 is any suitable mantle P, shown in conic form,'witl1 the upwardly extending central hub or top p0rtion P1 adapted tozbe engaged by the annular abutment P2 controlled by the lock nut P2 screw-threaded, as at P4, to the upper screwthreaded extension K11 of the shaft K4. The portion P3 is provided at its upper end With an outwardly extending circumferential flange P, upon which is positioned any suitable feed limiting or feeding plate P, The.

details whereby the lock nut P3 is held against rotation, in such fashion that the mantle is clamped upon the cone, do not of themselves, form part of the present invention and need not be considered in detail.

It will be realized that Whereas I have described and shown a practical and operative device, nevertheless many changes might be made in the size, shape, number and disposition of parts without departing from the spirit of my invention. I thereforewish my drawings to be taken as, in a broad sense, illustrative and diagrammatic, rather than as limiting me to the specific features herein described and shown, except so far as I limit myself by the language of the claims.

The usefand operation ofimy invention are as follows:

The invention relates to an improvement in cone crushers of the type wherein a spring release is provided for the bowl. In the larger size of Crushers it is important that a sutlicient number of springs be spaced about a bowl to hold it in position against all but excess crushing strains., I find it desirable to arrange the springs in a plurality of groups and to arrange the springs in each group at varying ldistances from the axis of the machine. These groups of springs are of sufficient power to hold the ring C1 clamped firmly downwardly against the top of 'the frame A. On theother hand, if uncrushable material, such Yas tramp iron or caked stone, passes through the device, the

springs are of such strength and set at such compression as to give sufficiently to prevent breakage or stoppage of the machine and to pass the troublesome substance or body. Then the bowl and its support tilt upwardly to permit the passage of such material, the member C1 is lifted from the member B. The bolts E3 tend to maintain the alignment of the devices, but I prefer to employ, also, the pin or aligning members I), the upper ends D1 of which insure that the member C1 will not escape fro-m its proper alignment. and will not rotate in relationto the member B. Such rotation, of course, throws a strain upon the bolts and springs.

Whereas .I have described and shown a particular arrangement of springs in groups it will be understood that I do not wish to be limited specifically to it, except so far as I do limit myself inmy claims and in particular I may employ a concentric arrangement of springs, two or more springs being positioned about the individual guides orbolts E3 or about the members E, as shown in Figures 3 and 4. I have indicated in Figure 3 a form of my device in which I employ the inner spring R and the outer spring R1 about each bolt or abutment. In the form of Figure` 4 I illustrate a third external spring R2, about the other two. It will be realized that whereas I have illustrated these multiple springs as shown in connection with segments E2 that they may be applied independently of such segments, with any suitable means for guiding and centering them or for grouping them, when they are arranged in groups. The group arrangement is convenient but may not under all circumstances be necessary.

The member H is in effect a housing ring, and prevents the access of dust to the parts within it It serves other primary purposes, however. The lateral projections H, as above described, prevent any relative rotaryY movement of the member H and the member G. Therefore the ring H may act as a wrench for turning the bowl G within the ringfC. Any suitable means for causingrotation of the ring H, such means being not shown herein in detail, have for effect to rotate the member G and to cause the member G to raise or lower within the screwthreaded ring C2. 'Assuming that the rotation is in such direction as to cause the member G to rise. it rises in relation to the member H which rests normally upon the top of the member C2, upwardly projecting from the frame member C. The wiping member or washer J8 provides a substantial dust proof connection between the inwardly projecting flange H2 and the cylindrical member .I about the hopper.

The bolts H5, with their nuts H, serve to raise the member G, through the projections H", to relieve the contact of the threads on the opposed members G1 and C2. These .threads are made with considerable play, and the act of crushing stone will lift the threads on the member G2 and cause them to bound to the extent of the play between them and the opposed threads. It is in order to take up this play that the bolts H are introduced. By tightening the bolts H after the correct setting has been obtained, the play is taken up, as to the loose threads. The nuts HG lift up on the bowl and the ring H exerts a downward pressure upon the top of the member C2.

The washers H10 may be made of liber and may be interposed between steel washers, one above and one below. The washers H10 may for example be made of pieces of rubber belting. If a piece of steel goes through the crushing cavity, it causes the ring- Cto be raised in relation to the member A, this tilting yielding release being important to prevent breakage of the device. As soon as the head recedes and the steel, or other uncrushcone, and-a hopper positioned above said able substance, as pass from the crushing cavity, there will be a pronounced blow when the ring member C seats itself on the frame as at C5. It is the function of the washers H1 to absorb or cushion this shock. In practice they furnish suicient pressure to keep the threads in contact, so that there will be no pounding but they give sufficiently to prevent stripping the threads on the bolts 11"'.

'lhe cone M is mounted upon a spherical bearing surface L1, and this bearing surface is protected from the penetration of dust or the like, which would shortly wear it out, firstly by the circumferential oil sump and secondly by the outer guard member L with its inner and outer spherical bearing surfaces in engagement with the inner andl outer flanges of the dust guard member O.

The hopper above the cone is preferably formed of a plurality of removable, and preferably separately removable segments J1. These Segments or liners are subjected to heavy wear and may be made of manganese steel, being of course easily replaceable and being held in place for example upon the conic ring or supporting surface J2, being held in position either by their form and interengagement, or by the rearward projec tions .11 which may project through the slots J of the member J2. The ring J5 serves to hold them against upward movement.

I claim:

1. In a gyratory Crusher, a circumferential frame member, a cone positioned within said frame member and means for gyrating it, a bowl surrounding said cone and tiltably mounted u on said frame member, the plane of the tiltlng connection between bowl and frame intersecting said cone beneath its top.

2. In a gyratory crusher, a circumferential frame member, a cone positioned within said frame member and means for gyrating it. a bowl surrounding said cone and tiltably mounted upon said frame member, the plane of the tilting connection between bowl andY frame intersection said cone beneath its top, and yielding means adapted normally to hold said bowl against movement in relation to said frame member.

3. In a gyratory erusher, a cone and means for gyrating it, a bowl surrounding said cone,

4and a hopper positioned above said bowl, said hopper including a plurality of removable segments.

4. In a gyratory Crusher, a cone and means for gyrating it, a bowl surrounding said cone, and a hopper positioned above said bowl, said hopper including a plurality of removable segments, and a generally cylindrical extension member positioned about the outer edge ofsaid hopper.

5'. In a gyratory Crusher, a cone and means for gyrating it, a bowl surrounding said bowl, said hopper including a plurality of separately removablesegmcnts.

6. In a gvratory Crusher, a cone and means for gyrating it, a bowl surrounding said cone, and a hopper positioned above said bowl= said hopper 4including a plurality of removable segments. and a conie supporting member upon which said segments rest.

'i'. ln a gyratory crusher, a cone and means for gyrating it, a bowl surrounding said cone, and a hopper positioned above said bowl, said hopper including a plurality of removable segments, and a conic supporting member upon which said segments rest, said supporting member being apertured, said segments being provided with securing members adapted to penetrate such apertures.

8. 1n a gyratory crushcr, a cone and means for gyrating it, a bowlsurrounding said cone, and a hopper positioned above said bowl, said hopper including a pluralityof removable segmcnts, and means for holding said 'segments in position.

9. In a gyratory crusher, a normally fixed circumferential frame member. a crushing cone positioned within said frame member and means for gyrating the cone, a bowl surrounding said cone and tiltably mounted upon said frame member, the plane of the tilting connection between bowl and frame intersecting said cone beneath its top, and yielding means adapted normally to hold said bowl against movement in relation to said frame member.

Signed at Hollywood county of Los Augeles and State of California, this lst day of February, 1929.

EDGAR B. SYMONS.

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