US1575874A - Crushing head - Google Patents

Description

CRUSHING HEAD 5 Sheets-Shed 1 Original Filed Sept. 111-, 1925 @RUSHING 'HEAD Original Filed Sept. 14. 1925 5 Sheetsmshem 5 Patent Wlan'. i226 ltllitliTE S'WA'ITES EDGAR B. SYMONS, F LOS ANGELES. CALIFORNIA, SSIGNOR T0 SYMONS BROTHERS COMPANY, 0F MILWAUKEE, WISCONSIN, A CORPORATION OF SOUTH DAKOTA.

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i 'Application filed January 4, 1925,8eria1 No. 4,377, which is a continuation of applications Serial Nos. 662,636 and 662,632, filed September 14, 1923. Divided and this application iled April 4, 1925.

Serial No. 20,G 01.

To aZZ whom t may concern:

Be it known that l, EDGAR B: ISYMoNs, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a certain new and useful Improvement in Crushing Heads, of which the following is a specification.

My invention -relates l'gyratory cone erushers, and particularly to crushing heads or cones therefor, and to means for moving and supporting and lubrieating them. I

One object is the provision of a simple l5 and eificient oiling system. Another ob]ect is'the prevention of the entrance of dust, water, or other foreign material into the bearings, and the reduction to a minimum of the leakage of oil. Another obiect is the .provision of new and improved means tor supporting the crushing. head. .Other objects will appear from time to time in the lcourse of the specification and clainis.

The present application is a division of `my application 437.7, filed on anuary2-t,

1925 as a continuation of my prior applicaltions 662,636 and 662,638, fledSeptember My invention is illustrated more or less diagrammatically in the acompanying drawings wherein- Figure 1 is a plan yiew;

Figure 2 is a section on Figure l;

Figug 2; and

Figure 4 is a yertical section of a variant form of my device.

Figure 5 is a'detail.

Like parts are illustrated by like characters throughout.

A is a bed, upon which rests a frame A1' outwardly ilanged at A2 for stiffness, and provided at its top with a reinforcing flange A8. A A6 are radial arins extending. in-

wardly from the flange A1 to support a rigid bearing sleeve A5. One side of this bearing to improvements in the line 2-2 of sleeve carries a ear case A from which pro' jects laterally t e horizontal sleeve A1r pro- 3 is a detail part section similar tov jecting from the frame. The sleeve A5 terminates in a gear case A1 which is formed by a flange A8 pro]ecting outwardly from the body of the sleeve A5, and closed by the' bearing cap A9, there being an oil tight packing A10 between this cap and the top of the sleeve A8. The sleeve A5 is provided with a tightly fitted lining A11.

B is an eccentric sleeve mounted for rotation in the bearing and having an outer babbitted bearinfr A12. It is fianged at B2 and has an annulaar ball bearing B1 resting on the flanged upper end of the lining A11 to support the downward thrust caused by the weight of the eccentric and its associated parts. B8 is a ring gear bolted or riveted to the underside of the flange B2 surrounding the upper end lof the bearing A8 and located within the gear case A16. B*1r is a bevel -pinion in mesh with the gear BS, mounted on the drive shaft B5 which shaft rotates in a bearing B6 carried by the two part split adjustable bearing support B7, which support is outwardly tapered and feathered in the sleeve A". The two parts of the bearing support are adapted to be forced inwardly to adjust the bearing by means of feed screws B8 in the cap B9 which cap is bolted in place to close the open end of the sleeve A. B1is a belt pulley, keyed to the shaft B5.

The bearing cap A9 has at its upper side a spherical bearing surface which supports a segmental ball member C1 having a babbitt facing C2 to engage the spherical bearing surface. C is the crushing head or cone mounted on and integral with the segmental ball above referred to. It has a skirt C4 extending downwardly below the ball bearing and is provided immediately below the bearing covered by they skirtl with a flange C, having a spherical surface concentric with the ball bearing engaging an oil packing ring C in a spherical surface on the cap A9 which surface is also, concentric with the ball bearing. C7 is a shaft mounted in the cone, tapered and locked by the com' ression ring C8 andthe nuts C This s aft extends down through the cap A making a close lit with the babbitt surface C1 on the inside of the eccentric sleeve B, so Ithat when the sleeve is rotated the shaft will be gyrated and cause`the cone to gyrate on its spherical bearing.

D is an inclined mantle, of manganese steel or other suitable material, carried on the cone, and supported for example by the packing D1 of zinc or other suitable material. D2 is a conic plug adapted to engage the upper portion of the mantle D to hold it in place, the abutting surfaces being substantially perpendicular to the surface of the cone. The plug is held in position :tor example by the nut Ds.

E is a conical spider having acylindrical lange E1 adapted to penetrate and be vertically adjustable in the frame A1. It is provided with reinforcing ribs Egand three laterally extending lugs Es. Adjusting bolts E4 are screw threaded in bosses E `on the ring A1, and pass through the lugs E3. The lugs E3 are counter sunk at E6 and supporting nuts E7 and locking nuts E8 have conical surfaces to engage these countersinks so that when the nuts E8 have been slacked od the nuts E1 may be rotated to raise or lower the spider and adjust it toward and from the crushing head or cone. lil is a concave mantle carriedvby the spider E rovided with a zinc or other suitable packing E1. Luge E11 projecting from the lower edge of the concave are engaged by holding bolts E12 which pass upwardl through the Hangs E1 and are heldA in ace to support the mantle by the nuts 1*. The splder y is outwardly flared above the cone to provide a funnel or hopper to guide the material to be crushed into the crushing area.

F is a pump housin closing the lower end of the sleeve A. is a gear pum carried thereby and mounted on a sha t F2. F3 is a crank disk rigidly attached to the gear pump and having an aperture adapted to be engaged by a crank in F1 which is thrust downwardly toward tile disk by means of a spring F1". lin arranging this part of the apparatus the plug F16 is screw threaded into a. hole in the end of theeccentric and a collar on the crank pin Ft rests against this plug to revent the spring FS from throwing the p ug out too far. The relative position of plug and collar is such that the crank in can go down far enough to engage t e hole in the crank disk. rll'akii'ig the position shown in Figure 2, when the crank diskV is put in place2 the crank pin rides on the disk compressing the spring. As soon as the ap paratus starts up the eccentric rotates until the crank pin is in line with the hole in the disk, when the spring forces the pin into the hole and from then on the crank pin is in the hole in the crank disk. F5

atraen is an oil pipe extending from a oint above the bottom of the chamber F t rough the conduit F7 to the pump. Oil is discharged thus through the conduit FE and the pipe F, conduit F10 to the annular conduit F11 by which the ball and socket bearing is lubricated. Oil asses out into the annular chamber F12 fxrom the ball and socket bearing whence it drains into the conduit F13 into the ear chamber, and thus back to the oil we l. Some of this oil will be passed through the conduit F11 to lubricate the bearing B6. F20 is an oil duct extending, as shown -in Figure 2, from the oil conduit F8 to the chamber beneath the eccentric and the main Crusher shaft in which islocated the crank disk F3. Oil passes through this duct F2 to fill this chamber andy in response to the action of the pump F1. Since the cross sectional area of the passage F20 is very materially smaller than the cross sectional area of the conduit F8, this receives a relatively small propor-l bearings B1 and finally flows back to the oil chamber F". There is thus a complete circulation'of oil through all of the bearings and the oil chamber being completely closed and there beine' no rotating acking employed lubrication troubles will bc reduced to a minimum.

While the flange E1 carries the spider E it makes a close fit in the frame A3 and is more or less held a ainst rotation by the adjusting screws E4. till the crushing action is likely to cause cree )ing with res ect to the frame as the ra ius along whlch the crushingr7 pressure is applied sweeps round and round during. the gyration of the cone. ln order to prevent this cree ing and resultant locking, jamming or brea ing of the adjusting screws the upper lOO portion of the frame is split at G and rovided with horizontally disposed lugs x1, G2. G3 is a locking bolt passing through these lugs and associated with the lock nut G4, by which, once the concave has been properly adjusted :for height, the. frame may bel clamped snugly on the spider to hold the parts against the kcreeping or dislacement. The key l is also inserted in key Ways cut in the frame and. spider to assist in holding against creeping.

H is a bearing bed carrying a bracket H1 and bearing H2. H3 is a stop collar on the shaft B to hold the shaft against lateral displacement so as to maintain the 35 suitable material.

Leraars L, which in Figure 3 is shown as bolted to the gear B3 and adapted to rotate within 'the gear housing A18.

Referring to the variant form shown in Figure a, N is a bearing cap having an uplO wardly concave spherical supporting surface N1, to provide for the opposed spherical bearing surface N2 of the head N3. The head is centrally apertured, and seats upon the upwardly tapered surface N(s of the I gfyratory shaft N5, the lower section N7 ot which penetrates within the eccentric aperture ot the sleeve N8. rlhe head is provided with a skirt N1o bolted or otherwise removably secured to a ledge N11 about the head,

and terminating in a spherical surfaced 'flange N12 adapted to engage the oil packing ring N13 in the spherical bearing surface N14 which is concentric with the main spherical bearing or supporting surface.

The upper end of the head is surrounded by a ledge which is arcuate in cross section as at O1, the arcuate portion forming a support for the hollow' crushingv cone O2 which is inwardly flanged atv the top as at @3 about its central` aperture to conform generally to the shape of the ledge.

Mounted upon the hollow cone is a mantlc comprising the concentric rings P P1 which may be of manganese steel or other P2 is a securing -or pressure transmit-ting ring .adapted to engage the uppermost of the manganese inantle rings. The mantle rings may rest diriectly upon the hollow cone, but are pref- 40 erably supported upon a layer ot .Zine or other suitable material lm.

S is a circumferential oil passage formed in the vsurface of the bearing surface N, and adapted to be supplied with oil, for ex# ample by the oil duct S1, from any suitable oil source. 'S2 is circumferential oil well positioned between the main spherical supporting surface N and the supplemental bearing surface N14 in contact with the flange N1. The sine of the well in relation to the movement of the cone is lsuch that under normal circumstances the inner edge of the 'flange will not contact the inner wall of the oil well. St is a run-off oil passage adapted to return the oil from the oil well to the main lubricating system of the Crusher.

Although lhave illustrated and described a practical and operative Crusher, it will be @0 realized that l may malte many changes in size, number, sha e, disposition and location of parts without departing :from the spirit of my invention, and that l wish my disclosure to be talren as in a broad sense @5 .illustrative rather than as limiting me to lpreferably closed oiling system.

'up through the duct the specific device herein. described and shown.. 11

The operation of my invention is as follows- I `When the machine is set up as shown -in the drawings and the drive shaft is rotated, it rotates the eccentric sleeve andvthereby the causes the eccentric shaftto gyrate or wabble. The eccentric shaft in turn gyrates the conic crushing head which rocks or gyrates on its large spherical bearing. 'l1 he head, in response to the v movement of the eccentric sleeve and the eccentric shaft. gyrates aboutl a point adjacent the apex of the cone, this central point being determined by the curvature of the spherical bearing. As the head gyrates the point of closest approach between head and concave travels about the concave.

bviously the crushing zone is filled with dust and flying particles and'it is a matter of extreme importance to provide a bearing which shall he substantially dustproof and which, on the otherhand, shall prevent the escape of the lubricant from the ln order to protect the main spherical bearing from fthe intrusion of foreign material l surround it with an open space or trap, represented. herein by the circumferential oil well or passage S. Outside of this passage l provide a second-pair of opposed spherical bearing surfaces concentric with the main supporting bearing N. The engagement between the opposed surfaces may be supplemented by a packing of any suitable type., ln operation the packing is to some extent oil soaked, if only oy the 'act that the lflange N12 contacts the oil in the well, and wip@ it across the packing. The depending apron to a large extent protects this outer bearing from dust and :flying particles. ln the 'formshown in Figure 2 the member C4 serves as such a protecting and dust-deflecting apron. ln the 'forni shown in Figure 4c the corresponding service is performed by the hollow cone, which extends downwardly and outwardly beyond the Hangs. Assuming that some 'foreign material passes through. the outer spherical hearing it penetrates the interior only in the )torni of oil soaked particles, andit passes into the oil in the oil well. lt drains thence by the passage to the main lubricating system and is Iiltered out or otherwise disposed of in the course of the normal circula'tion of 'the oil. No -foreign material can penetrate to the main spherical bearing since there is a flow of oil outwardly across the bearing surface N2. Uf the oil pumped I S1 some flows out across the periphery of the supporting bearing N1, and some ci? it flows inwardly toward the central shaft of the crusher. The leakage of oil from the system is mnimized since the oil which llows into the peripheral oil well is drained thence by the passage St.

l claim:

1. l'n acrushing machine, a gear case, having a 'circular top opening, a circular closure therefor having an upwardly extending bearing surface, lubricating passages contained within. the wall of the housing and the closure, pins unequally spaced interposed between the closure and housing, one of said pins being hollow andiadapted to complete the connection between said oil passages.

2, A crushing head comprising a body having a spherical bearing surface intermediate its to and bottom, a skirt project-- ing downwardly below the hearing surface, and an annular lug projecting inwardly from the skirt beneath and having a spherical surface concentric with the bearing surface.

3. A crushing h ead 'comprising a cone, the bottoni of which has a downwardly disposed spherical surface, an apron depending downwardly from the cone, below the bearing surface, a lug extending; inwardly therefrom and having a spherical surface concentric with the irst mentioned bearing surface.

4l. In a gyratory crusher, a bearing element provided with an upwardly concave spherical bearing, a crushing head adapted to be received by said concave spherical bearing and provided with a bearing surface shaped to conform thereto, and means depending from said crusher head positioned beyond the normal limit of the engagement of the Crusher head. with the concave bearing, adapted to prevent the passage of foreign material to or from said bearing.

5. ln a gyratory Crusher, a bearing element provided with an upwardly concavel spherical bearing, a crushing head adapted to be received by 'said concave spherical bearing and provided with a bearing surface shaped to conform thereto, a protecting apron, depending from the cone, provided with a spherical bearing surface concentric with said concave bearing, a bearing element opposed thereto, and a circun'iferential depression surrounding said concave spherical bearing, the bottoni of said depression extending lower 'than the lowest point of Contact of said apron and bearing elenicnt.

G. ln a gyratory crusher, a hearing plate having an upwardly concave spherical bearing, a concentric su pplententalhearing nienthcr surrounding it and spaced therefrom, having a spherical surface concentric with the main hearing surface.

7. ln a gyratory Crusher, a bearing plate having an upwardly concave spherical bearing, a concentric supplemental bearing member surrounding it and spaced therefrom, havingv a spherical surface concentric with Lavar-ive the main. bearing surface, and positioned at a greater distance than. the main bearing from their common centere 8. ln a gyratory Crusher, a bearing inember having an. upwardly concave spherical bearing surface, an annular member sur'- rounding such bearing surface, and having a concave spherical surface concentric therewith, an annular channel between said concave surfaces, the bottom of which extends below the lowest point of both, and a crushing head having downwardly convex bearing surfaces engaging each of said concave hearing surfaces. l

9. In a gyratory Crusher, a bearing plate having an upwardly concave spherical bearing, a supplemental annular bearing inember surrounding and located below such bearing and having a spherical surface concentric with the main bearing surface, and an annular channel between the bearing surfaces, the bottom of whichvis below the lowl est point in the hearing surface-s, a crushing head having downwardly convex surfaces engaging both bearing surfaces, and an apron extendingb downwardly below both such spherical surfaces.

l0. .ln a gyratory Crusher, a concave, a crushing head positioned therewithin and means for gyrating it, the under side of said' head having a spherical bearing surface, a supporting element for said head, the upper face thereof having a spherical bearing surface adapted to engage and conform to the bearing surface of the head, said supporting element having a second spherical bearing surface concentric with said lirst bearing surface, said supporting element having a circumferential oil well separating said 'nearingsurfaces.

ll. lin a gyrat-ory crusher, a concave, a crushing head positioned therewithin and means for gyrating it, the under side of said head having a spherical downwardly convex bearing surface, a supporting element for said head, the upper face thereof having a concave spherical hearing surface adapted to engage and conform to the bearing surface of the head, said supporting element being provided 'with means, positionedadliacent its outer edge, effective for preventing the escape of oil therefrom, and. for preventing the ingress of foreign material between the hearing surfaces.

l2. ln a gyratory Crusher,v a concave, a head positioned thcrewithin and nicans for gryrating it, the under side of said head having a spherical hearing surface, a supporting element for said head, the upper surface thereof having a. spherical hearing surface adapted to engage and conform to the bearing surface of the head, a second spherical bearing surface upon. said supporting element, concentric with said first 'hearing surface and separated therefrom. by a circumferental oil well, a shield removably secured to said head and extending outwardly therefrom and having a bearingsurface adapted to engage said outer spherical bearing surface upon the supporting element.

13. ln a gyratory Crusher, a concave, a head positioned therewithin and means for gyrating' it, the under side of said head having a spherical `bearing surface, a supporting element for said head, the upperv surface thereof having a spherical bearingl surface adapted to engage and conform to the bearing' surface of the head, a second spherical bearing surface upon said supportingr element, concentric with but lower than said first bearing surface, and separated therefrom by a circumferential oil well, a shield removably secured to said head and extending downwardly therefrom, and having a hearing surface adapted to engage said outer lower spherical bearing surface.

14. ln a `Ljyratoii'y Crusher, a concave a head positioned therewithin and means for ,cyr-ating it, the under side of said head having' a spherical bearing surface, a supporting;r element for said head, the upper surface thereof having a spherical bearing surface adapted to engage and conform to the bear ing surface of the head, a second spherical bearing surface upon said supporting element, concentric with said first bearing surface and separated therefrom by a circumferential oil well, an opposed bearing inemher on said head adapted to engage said second surface, a hollow cone mounted on said head and extending downwardly beyond and lower than said second spherical bearing surface.

15. ln a gyratory Crusher, a concave, a head positioned therewithin and means for gyrating it, the under side of said head having a spherical bearing surface, a supporting element for said head, the upper surface' tl'icrcof haring a spherical bearing surface adapted to engage and conform to the bearing surface of the head, a second spherical hearing surface upon said supporting,r element, concentric with said irst heal-ine' surface and separated therefrom by a circumferential oil well, an opposed bearing" member on said head adapted to engage said second surface, and a skirt extending downwardly and outwardly from said head to a plane lower than that of said second spheri cal bearing surface.

16. In a gyratory Crusher, a concave, a head positioned therewithin and means for gyrating it, the under side of said head having a spherical bearing surface, a supporting element for said head, the upper surface thereof having a spherical hearing surface adapted to engage and conform tothe bearing surface of the head, a second spherical hearing surface upon said supporting element, concentric with said first bearing surface and separated therefrom by a circumferential oil well, an opposed bearing member on said head adapted to engage said second surface, and means for shielding the junction between said outer bearing surfaces from the access of the material undergoing crushing. Y

17. ln a gyratory Crusher, a bearing plate having an upwardly concave spherical bearing, a concentric supplemental bearing member surrounding,r it and spaced therefrom,

'ing thereabout, the surface of the first mentioned bearing being broken by a pocket in communication with said first mentioned oil duct, of such dimensions as to be in communication with said annular oiling passage at all positions of the head during its gyration.

19. In a gyratory crusher, a crushing, head having a lower spherical bearing' surface, a sup-port therefor having an opposed concentric horizontally extending spherical bearing; surface, an oil duct extending to and discharging at the surface of the spherical. bearing, one of the bearing surfaces being broken hy an annular oiling;- passage extending thereabout, and an annular sump, extending about the periphery of the spherical bearing surface of said support, closed by the Crusher head.

20. ln a gyratory Crusher, a crushing head having a lower spherical bearing lsurface, a support 'therefor having an opposed concentric iori'zontally extending spherical bearing surface, an oil duct extending to and discharging at the surface of the spherical bearing', one of the bearing surfaces being broken by an annularoiling' -passage extending thereabout, an annular sump, closed by the crushing head, extending about the periphery of the spherical bearing surface of said support, a main oil sump, lan oil pump, and an oil circuit including said sump, pump, oil duct and annular sump, and means for actuating said pump to pump oilL through said first mentioned duct to the surface of the spherical hearme.

5l. ln a gyratory Crusher, a Crusher shaft and means for 1Q/rating,c it, a one-piece conic head mounted on said shaft, a spherical lll() surfaced bearimg pmtion on the lows-1 sid@ that of sai@ first menoned spherical beau'- of said hea, an apron extending ounvvmdj/ ing pmtoin,

and downwardly bayond said sherca ham Siglw at Los .zmgevse county of Los U ing portifm, and a rcumferenal Flange Angees and State of Caom'a this 21st inwardly p'ojectng therefmm, th@ lower day of March, 1925 side of said Hang-e being m'med 'with a 'spherical 'bearing swim@ concemtri@ with EDGAR SYMUNS.

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