US2543595A - Riding ring for rotary cylinders - Google Patents

Description

Feb. 27, 1951 c, PATTEN 2,543,595

RIDING RING FOR ROTARY CYLINPERS I Filed March 25, 1949 2 Sheets-Sheet 1 I l O O 0, /7 /6 20 7 Charles H .Pa tten YMM Feb. 27, 1951 c. H. PATTEN 2,543,595

RIDING RING FOR ROTARY CYLINDERS Filed March 25, 1949 2 Sheets-Sheet 2 2 Chafles JLBa/Z'Z'en, A 941%) MW ATTO R N EY5.

Patented Feb. 27, 1951 2,543,595.- ammo RING FOR ROTARY CYLINDERS Charles H. Patten, Allentown, Pa, assignor to Traylor' Engineering and Manufacturing Company, Allentown, Pa., a corporation of Delaware Application March 25, 1949, Serial No. 83,492- Claims. (01. soc-20.4),

The present. invention relates to riding rings for rotary cylinders.

This application is a continuation-in-part of my co-pending application Serial No. *7 49 613', filed May 21, 1947.

Rotary cylinders, such as the shells of rotary kilns, coolers, drl'ersand grinding mills, are pro-- vided with a plurality of riding rings which rotate in fixed bearing elements to thereby rotatably support the cylinders. It has heretofore been the practice to-iorm each riding ring of one piece of material and apply the rings by sl-iding them endwise along the cylinders. As a result, initial application of a ring, as well as replacement, involves a considerable period of time and labor.

An important obiect of'the present invention is to provide a riding ring formed in sections so that it more readily can be applied to a cylinder. A further object of the present invention to provide a novel means for mounting ariding ring on a cylinder.

Other objects and advantages of the invention will be apparent from the following specification and accompanying drawings, wherein Figure l is a side view of a ring, the view showing a cylinder in transverse section,

Figure 2- is a radial section through the ring and cylinder oiFigure 1, the viewbeing takenon the angled line 2 -2- of Figure l,

Figure 3 is a fragmentary face view of the ring of Figures 1 and 2, i. e., the view {looking toward the ring in a radial direction and fromv above Figure l,

Figure 4 is a detailed section on the line 4-1 of Figure 3, e

Figure 5' is an elevation view of amodifi'ed form of a ring and a modified means for mounting the ring on cylinder,

Figured is a fragmentary face view of the. ring showninfflFigure 5'.

Figure '1 is a sectional view taken on the line 1-1 of Figure 6 and,

Figure 8 is a sectional view taken on. the line 8-8 ofFigure- 6.

Referring to- Figures 1 to 4,, the numeral In. designates arotary cylinder suclj'g as is provided in a. calciningor; a similar structure and the numeral? generally designates the riding ring. The ring H; is illustrated as termed of two sec-- tions: i2 and [3, each of whichcomprises half oiv an annulus. However, it will be; understood that the ring Ill may be formed of a greater number of sections. Each section. includes sidewalls l4 and I5; ing in radial planes and flanges Mo and:

2 I So are provided at the inner edges of the respective walls.

As" is best indicated in Figure 3, adjoining ends of the sections I2. and [3 are provided with cooperating or inter-engaging hook elements 16 and Il, respectively. In more detail, each end of the section 1 2 terminates in an extension, or shank, IGa of less axial width than the body of the section 12 having parallel side walls. At its outer end shank Ilia carries an integral head portion Eb which has a greater axial Width than the shank ltd. The inside face IEO of head 16b lies in a radial plane and the side face 15d of the head lies in a plane parallel to the side walls I4 and 15. As best shown in Figure 4, the walls Ice and "if are formed by radii so that opposed surfaces of the hook elements ['6' and H can engage each other. However, as shown in Figure 3, the outer face Hie: of head IEb also extends at an obtuse angle with respect to the side wall l5 of the section I2. Also, theangle between the end wall It)" of section l2 and the. side wall I4 is complementary to the angle between lie and side wall [5.

It will be understood that the face [60 lies in a plane radial of the axial center of the section l2 and, therefore, will lie in a plane radial with respect to the axis of the cylinder Ill.

The hook 11 provided on the section I3 has a form identical with that of the hook element i6 and parts of hook I! corresponding to like parts of hook I 6 bear reference characters including the. same exponential letters". However, it will be understood that the hooks at the opposite ends of. each section [2 and I3 will be laterally displaced. That is, and as indicated in Figure 1,

the hook [6' at the opposite end of the section I I will be axially displaced with regard to the hook l6. shown. in. Figures. By this arrangement, the adjacent hooks of two sections will fit together ina. complementary manner as best shown in Figure 3.

As is clear from Figure 3, the shanks 'ifi'a and Ho are of greater length circumferentially of the ring than the heads I66 and lib, thereby providing' a space between the inner faces and lie of the heads and the inside walls 16g and Hg of Hence, by first 3 the two hooks l6 and l! and then forcing the other wedge I8 in between wedge l9 and the inner face lfic of hook head lBb, the two sections will be held together.

It will be observed that surfaces I60 and He comprise detent surfaces acting to hold the sections against circumferential movement, and that surfaces 156 and I6) of hook i6 as well as the opposed surfaces of hook ll, form detent surfaces which hold the sections against circumferential and axial, or lateral, movement with respect to each other.

As is indicated at 25 in Figures 2, 3 and 4, the radially outward edges of all of the surfaces of the hooks and wedges may be bevelled so that 4 ing ends of the sections 52 and 53 are provided with cooperating or interengaging hook elements 56 and 51 respectively. Each end of the section 52 terminates in an extension or shank 56a of a width in a direction paralel to the axis of the cylinder less than the width of the body of the section 52 having parallel side walls. At its outer end the shank 55a carries an integral head portion 56b. The outer end face 566 and the inside face 550 of the head portion 56b and also the wall 55] are substantially parallel and are disposed at an, angle with respect to the axial direction of the cyinder 50. The side face 56d of the head 56b andv the side face 56g of the after the sections have been assembled as described above, they can be welded. -Any .pro-

tuberances can be ground off so that theci'r'cumf ferential and side surfaces of the completed ring show only four plates 24 surrounding the cylinder,

it will be obvious that the number of plates may be greater or less except that it is desirable to use at least two pates so that they canzbe fitted upon the cylinder without the necessity of sliding them lengthwise of the cylinder.

As will be observed from Figure 2, the inner surface of each section of the ring is inclinedadjacent its side edges, as indicated at 22 and 23. In other words, the inner surface of the ring diverges away from the cylinder toward the side These divergent surfaces edges of the ring. operate with inclined wedges or shims-24 forced in from opposite sides of the ring between the ring and the plates 2!. The shims as: may be relatively short in a circumferential direction. After the shims 25 have been fitted in place, rivets 25 may be passed through al gned apertures in the flanges Ma and 55a of the ring sec-V tions, shims 24, p ates 2| and the wall of the cylinder in, and then headed.

Instead of the arrangement of shims 24 and plates 2i just described to secure the ring 1 i to the cylinder Hi, the arrangement disclosed in the application of Richard Bernhard for Riding Ring Mounting for Rotary Cylinders, Serial No." 6931599, filed August 28, 1946. now Patent Number 2,449,198 issued September 14 1948- may be used.-

If the arrangement of the Bernhard application isused, the inner surfaceof the ring sectionswould be cylindrical instead of inclined as indicated at 23 and 24 in Figure 2.;--

Referring to'Figuresfi to 8, the numeral designat s a rotary cylinder similar to the above described cylinder ID. The numeral 5| generally designates a modified form of riding ring. The ring 5| is illustrated as formed of two sections 52 and 53, each of which compriseshalf of an annulus.

and lying in radial planes. Unlike the modification shown in Figures 1 to i, the sections 52, 53 are substantially rectangular in cross section as shown in Figure '7 and are not provided with flanges.

The support--- However, it will be understood that the ring 5| may be formed of a greater number; of sections. Each section includes sideavalls 5e;-

.Bei rr napar c lar y-tefisi re elite celeb 1: l 75 shank 58a. are substantially parallel and are perpendicularly disposed with respect to the faces -or walls 566, 56c and 56 The edge 56h formed by thintersectioi'l of faces 56c and 5611 is 'rounded as is also the edge 569' formed by the intersection of faces 55 and 550.

As best seen in Fi ure 8,- the walls orfaces 55c, 55c and 56 lie in planes radially extending from the axial center ofthe section 52 and therefore, will lie in planes radial with respect to the axis of the cylinder 55. Y r

The hook'51, provided on the sec ion 53, has a form identical with that of the hook element 56 and parts of hook 55 bear reference characters including 'thesame exponential letters.

However, it will be understood that the hooks at the opposite endsof'sections 52- and 53 will be radially displaced in the same manneres above described with respecttoy sections12 and I3.

. The shanks 56a and EIa-are of greater lengthin a direction circumferentiallyrof the ring than the heads 5% and 5ib'so as'to pro ide a s ace between the inner faces 55c and 570 of the heads and the inside walls 550 and 51g of the shanks. Wedge 55 and 59 are forced into this space to secure the sections together against relative axial and circumferential movement.

-As shown in Figure 8. the opposed faces of the wedges (indicated at 6'!) are inclined with respect to radius of the-ring in the same manner as above described with'respect to wedges l8 and [9. Durin assembly, the wedge 59 is first inserted in the space or pocket between the two hooks 56 and 51 and then the wedge 58 is forced in between wed e 59 and the inner face 560 of the hook head 55b so as to-hold the two sectio 52 and 53 together.v s i a he d a outward-edges of-all of the surfaces of the hooks and wedges may be bevelled,

as indicatedat 6!] in Figure}, whereby the sections may be welded after assembly. The weldinrrridges may then be groundofi. so. as to provide that. the circumferential and side surfaces of the completed ring be smooth-and circular.

,Themeans for supporting the ring .5! on the cylinder 50 comprises a"'p1urality' 0f plates 6! of from each'other circur'nferentially around the cylinder- 55' but' 'it' will'b'e understood that they may? :be placed "in: contiguous? abutting relation '1 asiaretheplate's 21:. e The"plat'es '61 are prefer-' ably secured to'thering 50 by welding as at 62.

Retainer bars 63 and are secured .to the plates 6| by welding as at 65 and 66, respectively. Each of the retainer bars 53,-64: may be in the form 9 ;?z ;;1 5E 3:1; E 213 eaiee l ia ir umier i l r 2 around the cylinder but preferably each bar is in the form of an arcuate segment and a plurality of such segments are secured to the plates 6| so as to form an annular retainer collar adjacent each of the side walls 54, 55 of the ring 5|. By thus providing that the retainer bars be in the form of segments rather than one integral circular pire, the necessity for sliding the bars axially of a long cylinder will be obviated during assembly.

As shown in Figure '7, the inner side walls 61 and 68 of the retainer bars 63 and 64 extend in radial planes and abut, respectively, the ring side walls 54 and 55 so as to retain the ring against axial displacement. It will be noted that the inner cylindrical surface 69 of the ring is of a diameter slightly greater than the exterior cylindrical surface formed by the series of circumferentially disposed plates 6|. There is thus provided a clearance between surfaces 69 and 10 so as to allow for thermal expansion of the cylinder 50. The side walls 54, 55 of the ring and the retaining walls 61, 68 of the retainer bars 63, 64 are substantially smooth and planar and it will be obvious that the ring 5| will be freely rotatable with respect to the cylinder 50 until thermal expansion of the cylinder 50 eliminates the clearance between surfaces 69 and 10 so as to provide a press fit between the ring 5| and the plates 6|.

It will be understood that instead of the arrangement just described to secure the ring 5| to the cylinder 50, either of the arrangements disclosed in my co-pending application Serial No. 749,613 or the arrangement shown in Figures 1 and 2 of this application, or that shown in the Bernhard Patent No. 2,449,198, September 14, 1948, may be used. It will also be understood that the arrangement shown in Figure '7 for securing the ring 5| to the cylinder 50 may be used to mount the ring ll of Figures 1 to 4 upon the cylinder l0.

As is indicated in Figures 1 to 4, the ring sections I 2, I 3 are shown to be hollow and provided with air passages and apertures and it will be understood that the ring sections 52, 53 may be similarly formed if so desired.

By providing that the detent surfaces 560, 510 are at an acute angle with respect to the circumferential center-line of the ring, rather than perpendicular to the center-line as shown by detent surfaces I60, He, the modified structure of Figures 5 to 8 eliminates all shoulders on the outer surface of the ring in a direction directly transverse to the direction of movement of the ring surface. It will thus be seen that as the shoulder formed by surface 56c or 51c moves into contact with a roller or other supporting means of the fixed bearing, only a limited length of the shoulder will be in contact with the roller at any particular instant. However, if the shoulders are transverse as shown in Figures 1 to 4,

the entire length of the shoulder will contact the roller instantaneously as the rotation of the cylinder causes the shoulder to arrive at the position of the roller, rather than the gradual limited contact that is obtained in the modified structure of Figures 5 to 8. It will be obvious that the acute-angled position of the detent surfaces 560, 51c tends to provide in effect a smoother cylinder bearing surface and tends to eliminate vibration and jarring during rotation of the cylinder, while at the same time obviating the necessity for extremely small tolerances when grinding the shoulders and welding material thereon down to the cylindrical surface of the ring.

The terminology used in the specification is for the purpose of description and not limitation, the scope of the invention being indicated in the claims,

I claim:

1. A rotary cylinder riding ring comprising a plurality of arcuate sections, the sections having their adjacent ends provided with respectively complementary hooks, each of said hooks including a shank portion having inner and outer side walls which is an extension of the ring section and a head at the outer end of the shank, said shanks having a greater length longitudinally of the ring section than the corresponding length of said heads, the outer surface of each head being inclined relative to the intersected outer side wall of said shank at an obtuse angle, each of said heads including a detent surface which lies at substantially a right angle to the intersected inner shank side wall, and securing means insertable between opposed detent surfaces to force said hooks together into locking engagement with each other.

2. The combination set forth in claim 1, wherein said securing means comprise complementary wedges.

3. The combination set forth in claim 1, wherein the inner annular surface of the ring diverges outwardly and away from the cylinder on which the ring is to be mounted and toward the side edges of the ring, and arcuate inclined wedges adjacent said divergent inner surface and adapted to be mounted on the cylinder for supportably mounting the ring thereon.

4. The combination set forth in claim 1, wherein the inner annular surface of the ring is in the form of a cylinder having a larger diameter than the diameter of the cylindrical supporting means on which the ring is to be mounted so as to provide clearance for thermal expansion of the cylinder, and annular retainer means adapted to be secured to the cylinder and abutting both side walls of the ring so as to limit axial dislacement of the ring with respect to the cylinder, the abutting surfaces of said retainer means and said ring side walls being smooth and planar so as to allow the ring to rotate freely with respect to the cylinder.

5. The combination set forth in claim 1, wherein the inner shank side walls intersected by the detent surfaces are inclined relative to the circumferential center line of the ring by an angle which is less than a right angle.

CHARLES H. PATIEN.

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

UNITED STATES PATENTS Number Name Date 428,058 Richards May 13, 1890 2,132,321 Rice Oct. 4, 1938 FOREIGN PATENTS Number Country Date 146,580 Great Britain July 5, 1920

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