US2510437A - Gyratory crusher with power head adjustment - Google Patents

Description

June 6,1950 s. w. TRAYLOR, JR 2,510,437

GYRATORY CRUSHER WITH POWER HEAD ADJUSTMENT Q 3 Sheets-Sheet 1 Filed Sept. 15, 1946 Samuel Wfi'aylaz; Jr:

S. W. TRAYLOR, JR

GYRATORY CRUSHER WITH POWER HEAD ADJUSTMENT June 6, 1950 3 Sheets-Sheet 2 June 6, 1950 s. w. TRAYLOR, JR 2,510,437

' GYRATORY CRUSHER WITH POWER HEAD ADJUSTMENT Filed Sept. 13, 1946 3 Sheets-Sheet 3 Sam uel VIZ figs [01 71:

Patented June 6, 1950 eYRA roRY CRUSHER WIT-H POWER HEAD ADJUSTMENT SamueLW; 'Tfay lor, J r., Allentown, Pa. 7 Applibation September 13, 1946; S'erialNo. 696,879 j 16-C laims. (c1. 241- 213) This invention relates to gyratory-rcrushers of the ty-peahaving :an upright eshaitito. which :a lgyratory movem'entis --imparted by;,-a -rotary ec+ 'centricin which the'shaftxis-journaled for :free rotary movement causedwby-the rolling ot a head, secured vtolthe -shaft, {on the materialwbetween "it :andia ZCOIICHVG... Such shafts are ordi narily axially slidable int-he eccentric and-ears: provided with an z'adjustable support at the upper or. 'lower endv of the'shaft so that the-shaft can be adjusted verticallyxfor the -'purpose-of:positioningi the head relative to the z-concave for a Title or-coarseproduct', as-sthe -ease'may require. Ordinarily these shaft adjustments-are accent.- plishedmanually and the crusher has to be stopped. It is an object of the present invention-to provide a :power adjust ment for the shaft inone :or both di-rections,-g1e.-. living the power a-for one adjustmentafrom. :the rotary ,motion of the shaft "during-operation .of the crusher and iorthe'opposite. adjustment, from its gyratory motion. It is a further object of the-invention to provide an improved bottom support cfor :the.-shaf-t. Illustrative embodiments ofwthe inventionare shown in the accompanying drawings in which. 7

Figure 1 .iSx'an axial section of: a crusher equipped .for' power adjustment .-ofthe shaft either :up ordown,.. 7 V

Figure .2 is :a section. substantially on line .2-..-2 of..F'igu 'e 1, v

Figure .3 is a .se'ctionsubstantially on line 3--3 oi-fFigure 1,.., Figure 4 is a section of a modified v-iorm of apparatuswin. which the crusher shaft .is adjustably supported from above,\,substantial1y .on line 344 of Figure .5 of. a crushenequippedefo'r while theyuarebein-glmade power. adjustment of the shalftin o'ne direction 7 only, and V V Figure 5 isan axial section of therupper portion ofa crusher, the section being takensubstantially on line 5-5 of Figure '4.

Referring to Figures'-"1"to-'3, the crusher com pris'es a frame includii1g-an upper section l0 and a-lower section ll; The lower section'has a hub with a vertical bore 1 2 in which, through the intermediary -of--'abushing 13 is journaled as rotary member or eeeentri'dz "comprising a 'cyl=- indrical: portion 14' and a lower annular flange I 5 i s-upported cont-van; rantisfri'ctiona :thrust bearing-J6; a bevelzgeanill ,bei-ngfixed to-zflange I5. Reference -..-numeral 1-8 vdesignates: a horizontal shafirfioumaled in a-frame extension and having fixedpn-onerenda pinioml 9 in engagement with gear; I] andnon the ,5 other: a drive :pulley The-eccentric has an eccentric bore-:2! whose aXis;is -.tilted relative to the .axisuo f. rotation: of the eccentric, the bore terminatin'gndownwardly at annular flange .22 whosetop surface constituting; the bottom-'rof the here, is ina plane normal to the .aXis'--0f -thebore-2|, the-flange definingra circular openingv 2 l Reference numeral 23 designateswav nut having a top; out-turned flange 2t bywhich it is sup ported. on flange 22 through an anti-friction bearing '25, the nut bell'lig 603K121:WithithEfbOIG 2i and: projecting, freely downwardly: through opening 2!. The .nut engagesa threaded sup: porting portion or plug 1 26.

Received in the .bore 2liwithfreedom-of rotation is. a sleeve '21 which is supported by and coupled with nut 23 through-a.- suitable coupling member 2 8 here 1 shown: as- :an Oldhamfs or double slider coupling. The interior of "the sleeve is enlarged at its upper end so that a-shoulder is providedonwhieh is supported one portionZSyof a spherical socket assembly whose other :portion 30 is held place by a threaded-ring 31, the socket assembly enlgagingaball 32 provided with a diametriealbore which freelyv receives the lower cylindrical: portion 33 E of: the "crusher shaft 34. The lower end or the shaft is supported on and coupledwith the supporting portion or .plug 26 through an-O1dham*s'-coup1ing .35, ashore shown. The nut 23, iplugzzfi and sleeve ZTwhich is wcoupledwith the nut, ;constitute :an. upright cup-:like :bear-ing unit for-:the:s-haft :35, "the -.-plu'g 1constitutingthe'bottom end wallof the cup and;

here shown, being,verticallyadjustable;.

Theup-per end of easing section H is upwardly flared to a .circular rim: 36 whose inner and outer Walls convergesupwardly. The top; section [0 includes a ;ring-':,3-l having a bottom flange-sll channeled toimate with' the rim -36.- Ring-131 includes an inwardly projecting :annular flang-e 38 havinga downwardly. flared inner :edge; and above the flange -38 :the ring-includeswa -.-eol'lar portion 173 9 which terminates upwardly in: an out.- turned flange 48;. The :ringis :tiltablyyseeured to thewrim' 3-6." 'byg'means of :bolts 4 l which pass through :enlargejd openings; 'in'. the latter and in flange 38, the lower ends of the bolts heinggsurrounded by compression ispringsififi nWhiOh abut upwardly against-the bottom ofzrim 3t 'and down- :ward-ly: against al'sectionali'zed ring reasothat ringa'l'l *is yie'l dingly heldagaxinst rim 36 with the possibility of tilting relative atheret s as per:- mitted Joy: thee-coupling 3-5; for-=-the:rel-ief :of stresses;

Seatedagainstandisu-pported by the inner edge of flange 38 is the mating marginal portion of a concave 44, the concave having an outer face flaring downwardly, and engaged between this face and the inner face of collar portion 33 is a wedge ring 45 which, through a top flange 46, is bolted to flange 40 of ring 31 by means of bolts 41. Ring 45 is formed with a spider including arms as at 48 which support a bearing housing 49 into which the upper end of shaft 34 extends, the shaft end being supported by means of a ball and socket arrangement, like that at its lower end, for gyratory movement with capability of axial adjustment. Ring 3'! also supports a feed hopper 50.

Secured on an upwardly tapering portion of shaft 34 by means of a nut is a head 52 which, as here shown, includes a core 53 and a mantle 54, and in the space between the head and concave is disposed a crushing ring 55 which is a preferred feature but forming no part of the present invention, being claimed in my copending application, Serial No. 643,033, filed January 24, 1946 now Patent No. 2,498,774, Feb. 28, 1950.

As is well understood, when the eccentric is driven from pulley 2!], the shaft 34 is given a gyratory motion. That is to say, its axis moves in a conical path whose apex is at the neutral point 56 of the shaft. Inasmuch as nut 23 is always coaxial with the shaft, it too will gyrate or planetate. Furthermore, since the supporting portion 35 is coupled to the shaft and since the friction between it and the nut is greater than that between the nut and its support, the nut will participate in the rotation of the shaft. How these movements of the shaft are taken advantage of to effect axial adjustment in either direction will now be described.

Keyed to the lower end of nut 23 are gears 60 and 6! having external teeth which, as here shown, Figures 2 and 3, are generally triangular. Surrounding gear 6|] is an internally toothed orbit gear 52 which, through a spacer 63 is supported on an internally toothed orbit gear 64 which surrounds gear 6 I, gear 64 being supported on a shoulder provided by a cap member 65 which forms the bottom portion of frame section II. Gears 62 and 64 have cylindrical outer peripheries and are rotatably received in a cylindrical cap portion 56 coaxial with the axis of rotation of the eccentric.

As shown in Figure 2, gears 66 and 62 have the same number of teeth and their size relation is such that gear 66 can planetate about the axis of gear 62 in engagement with the latter. If the gear 60 were not rotating, then its planetation would have no effect on gear 62. However, assuming the direction of shaft gyration to be counter-clockwise, then the crushing head, roll ing on the material in the crushing space, will be rotated clockwise. As a specific example, assume the head to be 36 in diameter and to be set to one inch on the closed side, then the head would be rolling on a circle which is 37 inches in diameter and its distance of rotation during one complete gyration would be 3.1416 inches, and gear 62 would be rotated to the same extent clockwise.

Reference numeral 61 designates a vertical rock shaft journalled in the top and bottom walls of a pocket 68 off of the cylindrical portion of the cap 65, the lower end of the shaft projecting through a gland 69 and having secured thereto an arm 10. Fixed on the shaft in the horizontal plane of gear 62 is a dog H adapted to cooperate with notches 12 in the periphery of gear '62 to arrest the rotation of the latter as shown in Figure 2. When this occurs, the rotation of nut 23 is also stopped, but since the shaft and the supporting member 26 continue to rotate, they will be moved up or down depending on the direction of the threads between the supporting member and the nut. Preferably, the threads are left hand so that when the nut is arrested, an upward adjustment will be effected. The dog and notches are so shaped that the latter exert an outward camming effect on the dog so that the latter has to be held to prevent being thrown out. Should it be held too long so that the shaft or head jams upwardly, the resultant jamming of the interengaged threads will cause the nut to be rotated and gear 62, being thus driven, will throw out the dog or at least Warn the operator to release the handle.

Gear 64, on the other hand, has a greater num-- ber of teeth than gear 6|, the ratio as here shown being 23-to-20. The size "relationship of the gears is such that gear 6| can planetate about the axis of gear 64 in engagement with the latter. In view of this ratio, gear 64 will normall be driven counter-clockwise.

Fixed on shaft 61 in the horizontal plane of gear 64 is a dog 73 adapted to cooperate with notches 14 of gear 64 to arrest the latter as shown in Figure 3 and it will be noted that the relative disposition of dogs H and 13 is such that both are disengaged or one or the other is engaged with its associated gear. When the rotation of gear 64 is arrested, the result is that gear 6| will be driven clockwise a distance of 3 teeth for each gyration. This angular movement is substantially greater than 10, which is assumed to be the normal angle of shaft rotation for each gyration, and, consequently, nut 23 is driven faster than member 26 so that the latter will be displaced in a direction opposite to that in which it was displaced when the nut was held stationary as in Figure 2.

When dog 13 is out of contact with the orbit gear 64, and with gear 8! gyrating in a counterclockwise direction and rotating in a clockwise direction, approximately 10 degrees per gyration, ear 64 will rotate in a counter-clockwise direction a distance, in each gyration of the internal gear 5|, equal to the difference between the amount of rotation of the internal gear in said gyration (10 degrees) and the planetary advance in said gyration (three teeth, or approximately 47 degrees), said difference being approximately 37 degrees.

As noted above, however, when rotation of gear 64 is arrested by dog 13, gear 6!, during each gyration, will be advanced in a clockwise direction, a distance equal to three teeth or approximately 47 degrees and the nut 23 will be correspondingly advanced. Since the shaft and the threaded supporting member 26 rotate only approximately 10 degrees 'during each gyration, the nut is advanced substantially 37 degrees with respect thereto, thereby displacing the shaft relative to the supporting nut.

The gears 64 and BI, in combination with do 13, constitute means for transmitting force from the gyratory motion of the shaft to the nut to rotate the same faster than the normal rotation of the shaft in the same direction as the shaft during each gyration thereof, thereby to adjust vertically the shaft with respect to the nut.

It will thus be evident that merely by the appropriate rocking of shaft 61, the crusher shaft -ean be quickiy moved either=up or=down while driven-counter-clockwise --so' that-noel l and the notches would" have to bedesig' iie'd toprevent rotation in thatdirectiom InFigurese andfixeference numeral 80-desig.- notes a spidersupported bearing housing; into which-proj ects the upper end of a -gyratory shaft 8-! whose"- lower-end -is journal-led in an eccentric and-is-axiallyslidable therein-as in common practice;- The --be'aringhousing supports a bushing 32 which surroundsthe shaft amiss --bor'edone taper to accommodate the motion-of the shaft,

' and suppo-r-te'don- -an-=out turned flange 83 of the bushing is a bronze ring ;84-whic'h-has-aspherical upper surface generated about the neutral. point of the shaft;- The threaded upper end of the shaft, whichin this case ccnstitutes-th'e supporting portion, isengaged in anut 85-which has a bottom-sphericalsurface mating W'i-ththe sphericalsurface of ring 84- and rotatable thereon. Formed on the upperendof the nutisa gear 86 which is gyrator-y withirr an internally toothed gear 81 rotatably supported the upper-partcf the housing on the vertical axis of i the crusher. At -o-ne-side,- the--housing is -eni argedto provide a pocket 88 throughwhicl r cirtends avertical rock shaft 89 whose lower end is accessible-formant ulation, andwithin the pocket the shaft has i fixed thereto dogs'sfl and- 9 (in angular relation.

Assuming that the-direction-of normal shaftrotation is clockwise, then. just as in Figure 2, gear 8? is-norrnally driven-cIockWise. Itsrotationcan be arrested by swinging dog 90 into a notch--92 in-=theperiphery of gear-81; and in that case, the rotating shaft will thread itself upwardly if provided with a left-hand thread as shown in Figure.-5. The. gyratoryniotion at the; top of the shaft is not sufficient to enable. it tobev taken advantage of as in Figure 3.: However; by swinging dog 9! into engagement with a notch 93 of gear ti, the nut .can be held against rotation while the shaft is manually turned as by'means :of :a; bar inserted in notches as at--'94 in the upper end ofv the head. With dogs -90"and 91'fbothin neutral position; nut '85 rotates with shaft Bi and carries shaft, a rotary memberiinwhich pne end of said shaft is 'eccentri'cally journalled and is slidable,

ahead fixed on s'aicfslraft.and a fixed concave surrounding the head; 'a' mitro'ta'tably supported at one end of said shaft, a supporting portion for the shaft threaded in said nut and rotating with the shaft and in turn normally rotating said nut during operation of the crusher, and means operable to arrest rotation of said nut with the shaft whereby to adjust vertically in one direction said supporting portion and therewith the shaft as the result of relative shaft rotation.

2. In a gyratory crusher comprising an upright shaft, a rotary member in which one end of said shaft is eccentrically journalled and is slidable, a head fixed on said shaft and a fixed concave surrounding the head; amt .rotatably supponte'd at one end of-:saidshaft;.a supportingrportion for the shaft threaded in said inut and rotating "with the shaft and in turn normally .rotatingsaidenut during operation of the crusher, means operable to arrest rotation of said nut. with theshaft whereby to adjust vertically in onedirectionsaid supporting portion and therewith the shaft .as the result of relative shaftrotation, andLm'eans J transmitting forcefrom the gyratory motion of the-shaft :to the nut to rotate :the sameifaster thanthe'normal rotation of theshaftinthe same direction .as-the-shaft, whereby to adjust vertical-1y the-otherdirection said supporting-portioiiand shaft.

3 In gyrator'y-c'rusher comprising an upright shaftga rotaryme in-ber in which-one-end of sa-id shaft is eccentnoany j ournaued -and :isslidable, a 'headfixed on said shaft anda fixed :coricave surrounding the head, a nutrotatably-supported at one end of said shaft, a supporting portion for the shaft tl-n' eadedin saidnut and rotating with the shaft and in turn normally-rotating said nut during operation of the crusher, andacontroll'able drive to said nut derived from the gyr'atory motion-ofthe shaft for driving the nut faster than-the normally rotating shaft whereby to adjust-vertically said supporting portion and shaft.

4. In a gyratory crusher comprising anupright shaft, a rotary memberin'ohe endof'said shaft is eccentric al-l y j ournalled and is slidable, a head fixedonsaid shaft and a fixed-concave surrounding the head; a nut rotatabl-y supported at oneend of said-shaft-forgyratory movement therewith; j asupporting portion- -for'-- the shaft thre'aded in said-hut and rotating with the's'haft and -inturnnormally rotating said mitduring operation--01? thecrusher, an-externallytoothed innerplanetary gear fixed-to said-nut, an internail-y toothed outer orbit gear surroundingsaid inner gear and mounted for-rotation'on-e-fixed axis, said gearshavi-ng a size and tooth ratio effooting" simultaneous gyratory planetationof the inner gear within theoutergeanwnne-rotating the latter with tlieshaft; andmeans-fer arresting rotation of the outer gear,-the-;ratio between the gears being such that when the outer '7. Structure-according to, clef-m l wherein the nut s-at-theiuppen n veith haft ndw rein said supporting portion is the upper end of the shaft.

8. Structure according to claim 1 wherein means is provided to cause rotation of the nut in the same direction as the direction of normal shaft rotation and at a faster rate, to adjust in the other direction, the supporting portion and the shaft relative to the nut.

9. Structure according to claim 2 wherein the nut is at the lower end of the shaft and wherein said supporting portion comprises a member be- 7 neath the shaft and coupled thereto in a manner to permit relative tilting of the shaft.

10. In a gyratory crusher comprising an upright shaft, a rotary member in which one end of said shaft is eccentrically journalled and is slidable, a head fixed on said shaft and a fixed concave surrounding the head, a nut rotatably supported at one end of said shaft for gyratory movement therewith, a supporting portion for the shaft threaded in said nut and rotating with the shaft and in turn normally rotating said nut during operation of the crusher, an externally toothed imier planetary gear fixed to said nut for gyratory movement therewith, an internally toothed outer orbit gear surrounding said inner gear and mounted for rotation on a fixed axis, said gears having a size relation permitting gyratory planetation of said inner gear in engagement with said outer gear while rotating the same, and means operable to arrest said outer gear, the tooth ratio between the inner and outer gears being more than one to one, whereby when said outer gear is arrested, the gyratory planetation of said inner gear will cause said inner gear and nut to be driven in the direction of normal shaft rotation at a speed greater than that of the shaft so that said supporting portion and, therewith said shaft will be displaced vertically in one direction.

11. Structure according to claim 10 wherein the nut is at the lower end of the shaft and wherein said supporting portion comprises a member beneath the shaft and coupled thereto in a manner to permit relative tilting of the shaft.

12. In a gyratory crusher comprising an upright shaft, a rotary member in which one end of said shaft is eccentrically journalled and is slidable, a head fixed on said shaft and a fixed concave surrounding the head, a nut rotatably supported at one end of said shaft for gyratory movement therewith, a supporting portion for the shaft threaded in said nut and rotating with the shaft and in turn normally rotating said nut during operation of the crusher, an externally toothed inner planetary gear fixed to said nut, an internally toothed outer orbit gear surrounding said inner gear and mounted for rotation on a fixed axis, said gears having a size and tooth ratio effecting simultaneous gyratory planetation of the inner gear in engagement with the outer gear while rotating the latter with the shaft, means operable to arrest the outer gear, the ratio between the gears being such that when the outer gear is arrested, the speed and degree of rotation of the inner gear and nut are less than that of the shaft and said supporting portion, so that the supporting member and said shaft will be displaced vertically in one direction due to relative shaft rotation, a second externally toothed inner planetary gear fixed to said nut for gyratory movement therewith, a second internally toothed outer orbit gear surrounding said second inner gear and mounted for rotation on a fixed axis, said second gears having a size relation permit- 8 ting gyratory planetation of said second inner gear in engagement with said second outer gear while rotating the same, and means operable to arrest rotation of said second outer gear, the tooth ratio between said second inner and outer gears being more than one to one, whereby, when said second outer gear is arrested, the gyratory planetation of said second inner gear will cause said second inner gear and nut to be driven in the direction of normal shaft rotation at a speed greater than that of the shaft so that said supporting portion and therewith said shaft will be displaced vertically in the opposite direction.

13. Structure according to claim 2 whereinthe nut is at the lower end of the shaft and wherein said supporting portion comprises a member beneath the shaft and coupled thereto in a manner to permit relative tilting of the shaft.

14. In a gyratory crusher having a stationary lower frame, a member supported for rotation in said frame on a fixed vertical axis and having an upright cylindrical bore disposed on an axis which is eccentric with respect to and inclined from said vertical axis, said bore terminating in a bottom surface normal to its axis, an upwardly facing cup-like bearing unit supported coaxially in said bore by said bottom surface, and a crusher shaft having its lower end disposed coaxially within said unit and supported against downward movement exclusively by said unit.

15. A crusher in accordance with claim 14 characterized by the inclusion of antifriction bearing means between the bottom of said member and said unit.

16. Structure according to claim 14 wherein the cup-like bearing unit includes a bottom end wall forming element constituting the support for the shaft and wherein said element is vertically adjustable for vertical adjustment of the shaft.

SAMUEL W. TRAYLOR, JR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 269,193 Gates Dec. 19, 1882 463,539 McCully Nov. 17, 1891 501,843 McCully July 18, 1893 525,410 Gates Sept. 4, 1894 525,443 Carman et a1. Sept. 4, 1894 666,129 Chester Jan. 15, 1901 799,647 I-Iart Sept. 19, 1905 1,176,834 Kennedy Mar. 28, 1916 1,405,878 Torrance Feb. 7, 1922 1,630,194 Malone et al May 24, 1927 1,953,472 Fahrenwald Apr. 3, 1934 2,135,324 Brown Nov. 1, 1938 2,147,833 Fahrenwald Feb. 21, 1939 2,256,134 Bornay Sept. 16, 1941 2,327,389 Annesley Aug. 24, 1943

Images