US1921445A - Conveyer roll - Google Patents

Description

Aug' 8, 1933- G. N. VAN DERHEF 1,921,445

CONVEYER ROLL Original Filed June 22, 1927 rso Patented Aug. e, 1933 l AUsiran l `1,921,445y i coNvnrEa ROLL George NL Van Eibernest, South Bend, Ind., as- Y signor to Dodge Manufacturing Corporation, Y Mishawakailnd., a Corporation of Delaware [original @message .time 22, 1927, serial'N.

200,566. Llivid 1929.

and thisapplication May 31, Serial No. 367,357 v locaties. (o1. 30s- 205 This invention (for which the present appli-- cation is filed as a division of my applicat Serial No. 206,566, Vled June 2.1,-19279 relates to conveyor rolls, incre particularly belt sup-- porting installations. The object of the invention is to obtain a very efficient and practicable conveyor belt supporting installation comprising rol-lsor idlers, and to provide an improved idler therefor.

The invention will be explained by reference to anillustrative embodiment thereof shown in the accompanying drawing, and will be more particularly pointed out in the claims 'annexed to this description. l Y l The drawing represents a' troughing support comprising in this instance three lrolls or idlers, of which the 'intermediate roll is vshown in section and the adjacent end portions of the outer or ilanlring rolls are shcivn'in elevation. ,In the drawing, the .three rolls referred to are respectively designated by the numerals 1, 2 and v3. These are arranged end to end on relatively inclined. axes. They are closed spaced so as to bring the adjacent roll ends near tcgether at the top, in order to provide a nearly continuous support for the ccnveyer belt and' thus avoid objectionable saggingl of the belt between rolls.

The rolls are carried between suitable supporting brackets, being individually. removable as hereinafter explained. Intermediate brackets for supporting adjacent roll ends are indicated at L1 these being arranged inthe gaps between the roll ends, below the axles of the rolls. The rolls at their vadjacent ends are supported through their axles froin these brackets or intermediate supports. 'It will be understood that the rolls land 3 are similarly supported at their outer ends from suitable brackets (not shown).

The construction of the. individual rolls and their accessories Will be understood by reference to the intermediate roll 2, which together with cave surfaces 'l truly concentric with the interior.

cylindrical surface 8 oftheroll; and thc said annular surfaces I maybe utilized for centering run in true balance, resisting Wear of the bear.l

axle 113` extending through the roll andv on truly cc-axial Withthe bearing cones and shaft 'formed to provide grease Vchambers in their inplied through the axle.

the roll in the machines for the boring, turning and finishing operations, sov that the bearing-` encasing hubs maybe bored in exact alinernent and-interiorly iinished intrue concentricity With the surface 8, and the outer surfaceof the roll 5U. may be Vturned and finished precisely parallel f and in true concentricity with said interiorsur-l face. The roll so manufactured is claimed ,by me as an improved article of `manufacture in my said parent applications, and the method of manufacture is claimed by mein a divisional application Serial No, 2Q3,272, filed July'16, 1928.

Use of` acast iron roll for a conveyer belt supporting idler is advantageous from the standpoints of strength, sturdiness, and vresist- 7,0

lance to abrasion, asV Wellv as forv economy of manufacture, While a cast roll of the character stated has the special advantage that it will4 ings and .Wearing of the conveyer belt which often results'froin unbalanced rolls. f

Bearings comprising, tapered bearingv rollers 9 and cup and cone rings therefor are mounted in the hubs 6, the two bearings being symmetrically arranged to sustainradial "load and op`- posite end thrusts. As shown, the bearing cup rings 10 are ntted inthe hubs against thrust shoulders r11 at the inner' sides of Vsaid Cup' rings, and the cone rings 12 are iitted Ona steel which the roll freely revolves through theinterposed bearings.V The exact alinement andvtrue, concentricity of the bearing recesses in the hubs makes it possible to locate the bearingv cups c axis, thereby insuring proper` operation of. the bearings and' maintenance of the rolls in balance, provided the bearings be maintained in proper adjustment. The. bearing cup rings 10 may be advantageousiy forced into the recesses of the roll vhubswith 'a press fit, and the cone rings 12 maybe forced'withja press lit on the axle 13.

The bearingfencasing .hubs ofthe rolls 'are ner ends, to Awhich grease or lubricant is sup- In the specific construction shown the axle isholloW. to provide,A a grease conduit 15 communicating throughthe apertures 16 with the grease chambers 14. The lubricantis introduced into the axle ,ends as hereinafter described, and enters the bearings through the reservoirs or chambers 14 on the. Yinner sides of the bearings and .travels outward toward the grease seals at the outer sides of of the bearings.

the bearings, giving av positive circulation which prevents the accumulation of old grease.

Means cooperating with the inner ends of the bearing-encasing hubs and the axle to confine the grease and prevent its escape into the interior `of the roll is represented by a grease tube 1'?v surrounding the axle and having its ends tightly jointed to the hubs. The ends of the grease tube may pass through the openings in the inner ends of the hubs and may be beaded thereto at 13. The beading operation may place the tube in sufficient tension to maintain tight joints with the hub throughout the life'of the roll. The sealing of the hubs around the axle by the grease tube 1'7 is advantageous in a hollow cast roll because of the possibility that in practice all coarse sand or other` abrasive material might not be removed from the interior of the roll.

Grease sealing means represented by labyrinth packings are provided at the outer sides In the present case each labyrinth packing is provided by a sheetV metal ilanged ring 19, a peripherally grooved disc 20, and an outer Vsheet metal plate 21 having a circular iiange which enters a circular groove 22 in the outer end of the hub. The ring 19 tted in the hub provides a restricted passage between its inner edge and the bearing cone ring 12. The disc 20, mounted on the axle within the hub, is formed to provide a slight clearance between the opposite sides of the disc and the plates 19 and 21, and the grooved periphery of` thedisc provides a pair of constricted passages and an intermediate enlarged space between the said periphery and the interior ofthe hub. The flange of the plate 21 entering the circular recess 22 provides an additional restricted passage around said flange. The' labyrinth seal described electively prevents the escape of grease.

The end portions of the axle 13 project outside the bearings and are provided with end pieces 23 detachably afiixed on the supporting brackets 4. These end pieces 23 embody collars 24 enclosing the axle ends and abutting against the bearing devices for positioning the bearings relative to the axle. The collars 24 are held in place bythe bolt heads 25 oi fastening and adjusting screws or bolts 26 screwed into the axlev ends. Washers interposed between the bolt headsv and the collars are indicated at 27. The bolts are held from turning by locking devices in the form of washers having bendable lugs 28 engaging the bolt heads, thesel locking devices having. extensions 29 engaging recesses in the end pieces 23 to prevent the locking vdevices from turning relative to the end pieces. Set

screws 30 in the collars engage the axle to hold it against rotation.

The length of the axle 13 is less than the distance between the outside faces of the two collars 24. when the latter are clamped against the bearing devices, thus providing clearances to allow forv adjusting the collars inwardly by tightening the bolts 26. In the specific construction shown, the end thrust between the collars 24 and the bearing cones 12 is transmitted throughtheeiements 2l) and 21 ci the grease seals, said elementsl 20 and 21l here typifying spacing members appropriate for the particular axial dimensions of the collars shown, which in this instance are sufficiently long to extend clear to and abut against the plates 21.y If the collars were of shorter length, compensa- 'lightening the bolts will draw the collars 24V inwardly, shortening the distance between the collars, with resultant adjusting effect upon the bearings. Y

The `roll is equipped at one endwith a lubricant-introducing tube 3l having an appropriate iitting 32 ior connection with a grease gun or force feeding device. The tube 3l is shown attached laterally to the collar 2li on one oi the axle ends. The grease port in said collar to which said tube is connected communicates with the conduit 15 in the axle via a circumferential recess 33 formed in the outer surface of the axle and a grease port 34 in the axle. Grease forced into the axle through the tube 31 passes to the grease chambers 14 and enters the bearings at their inner sides as previously explained.

As shown, the 'lubricant-introducing tube projects outwerdly and downwardly, positioning the valved itting 37 at a conveniently accessible point for attachment and operation of a force feeding device. This lubricant-introducing tube may be attached to whichever end of the axle is most convenient, the necessary grease holes and passages being duplicated at the opposite ends of the axle. In practice, however, it is sufficient to employ one lubricant-introducing tube as shown, and the grease hole in the end piece 23 'at the opposite end of the rroll may be closed by an ordinary plug.

Downwardly projecting angle arms are provided on the` axle ends by the end pieces 23 which engage and are removably supported by the brackets 4 in a manner to hold the end pieces rmly in position while allowing them to be disconnected from the brackets' by lifting the roll. As shown, therend pieces are formed with bracket-engaging parts 35 ntted in recesses 36 in the faces of the brackets, the said parts 35 of the end pieces being slidably iitted in the recessed parts or the brackets and the recesses being open at the top so as to permit the end pieces to be withdrawn from or inserted into the recesses or the brackets by upward or downward' movement of the roll in a direction at right angles to its axis. v

foregoing description with reference more pai ilarly to the roll 2 will be understood as applying toAea-ch of the rolls or the troughing yg3-.ort structure, each of said rolls being arranged bc-tween and removably mounted through its axle-carrying vend pieces on a pair or" iixed brackets, which brackets will be understood to be mounted upon any suitable decking or support. Only the intermediate brackets l are shown, these being arranged in gaps between adjacent roll ends and supporting the adjacent axle ends through the angle arm attachments or end pieces 23. rIhe opposite faces of the said intermediate brackets 4 are closely adjacent' to the roll ends but entirely clear thereof, and the outer ends of the rolls 1 and 3 may similarly be in close juxtaposition toY the confronting faces oitheir supporting brackets (not shown). As indicated in the drawing, the proportions and arrangement of parts are such that, while the axle end attachments at adjacent ends of the rolls-are closely juxtaposed, each roll may be lifted by movement atright angles to its axis until its axle-carrying end llO lli)

y pieces 23are clear Vof and diSengagedrmthe with 'the bearing cone ringsfior adjusting the brackets, without interference'by the adjacent roll end. Thus each roll maybe individually removed by lifting it until its end pieces "are clear of the brackets and then moving it sidewise to withdraw it from the other rolls.

The fastening and adjusting bolts "m in the specific construction shown typify threaded fas- V tening devices screwed to the axle ends by which to hold the axle end pieces in cooperative relation with the rolll bearings, maintaining Vthe bearings in proper position relative tothe axle and securing the roll parts in assembly.

It will be seenthat the invention provides an exceedingly practicable .construction for a troughing vsupport for belt conveyers having closely arranged rolls which can be individually lubricated while in place, without'interfering with the operation of the conveyer, and which can be individually removed by lifting them from their supports for inspection, adjustment and repair, and the bearings of which may be adjusted in the iield. i f D What I claim as my invention, and desire to secure by Letters Patent, is:

l. A conveyer roll having an axle and bearings thereon set inwardly from the ends of the roll, the axle ends having attachments providing depending angle arms engageable with and by which the axle ends may be removably supported by supports placedclosely adjacent to the roll ends, said attachments embodying collars non-rotatably secured to and longitudinally adjustable on the axle ends and cooperating with the bearings for positioning and adjusting the same, and adjusting means screwed to the axle ends Vagainst said collars, said attachments adapted for close 'juxtaposition in back to back relation to like parts of other similar rolls when arranged in the relationship shown in the accompanying drawing.

2. A conveyer roll having inwardly set bearings comprising tapered bearing rollers and cup,

on the axle, screwboltsl in the ends of the axle,

having heads cooperating with said collars by which the collars are held in cooperativerelation with the bearing cones and may be adjusted inwardly for adjusting the bearings, and the axle ends being provided with depending arms adapted to be removably Aaiixed on supports adjacent the roll ends. I Y

3. A conveyer roll having `inwardly set bearings comprising tapered bearing rollers and cup and cone rings therefor, an axle-on which said cone rings are mounted, the roll having bearingencasing hubs in which the cup rings are tted, the bearings in the opposite ends of the roll be- -ingsymmetrical and arranged to be tightened by inward adjustment of the cone rings, the axle end portions projecting outside said-bearings and terminating proximate to the roll ends,

and angle pieces on the axle endportions providing depending arms adapted to be removably anxed on supports adjacent the roll ends, said angle pieces embodyingcollars adjustably fastened on the axle end portions and cooperating bearings, said` angle pieces adaptedfor close juxtaposition in back to back relation'to like parts vvof other similar rolls when arranged in volves, the said bearings being set inwardly from the roll ends and the axle ends being outside said kbearings and` adapted to be supported in close proximity te the roll ends, said roll having i means for holding grease on the inner sides of the bearings and grease seals on the cuter sides of the bearings, collars non-rotatably'secure'd to and adjustable on the axle ends and cooperating with the bearings for positioning and adjusting the same, headed fastenings screwed to the axle ends ragainst `said collars, a grease-introducing tube laterally connected withv a said collar, and a grease duct in the axle communicating with said tubeand with said grease holding means at `the inner side of thebearings.

5. Ina structure'of the class described, the combination with conveyer rolls arranged closelyA adjacent endto end on relatively inclined axes, said rolls having axles and rantiricticn bearings thereon set inwardlyr from the roll, ends, ofy supporting standards from which the rolls are removably supported by angle pieces on the ing with the bearings for positioning the same,

said collars having depending arms removably aiilxed on said standards and detachable therelfrom upon liftingthe rolls, screw bolts in the ends of the axle having heads cooperating with said collars for adjustingv the same for adjusting the bearings, there being clearance between the roll ends and adjacent faces of the standards and between adjacent axle end attachments so that each roll can be lifted to disengage. said arms fromj said standards and can be removed fromthe standards by movement at right angles to theroll axis.

6. Ina structure of the class described, the combination with conveyer rolls arranged closely adjacent end-to en'd on relatively inclined axes, said rolls having axles and bearings thereon set inwardly from the roll ends, of an interposed support and a pair of angle pieces arrangedy back to back removably aiiixed on said support and embodying collars non-rotatably secured on the axle ends, said collars cooperating vwith the bearings for maintaining them inposi- 7. In a structure of the class described, the I' combination with conveyer rolls arranged closely adjacent end to vendron relatively inclined axes, said rolls having axles and antifriction bearings thereon set inwardly from the roll ends, of sup- .pcrting standards from which the rolls are re- Amovably supported by end pieces on the axle l ends, said end pieces` embodying collars on the axle and cooperating with the bearings for posifist an independent unit removable from its supporting brackets without disturbing the others.

8. A conveyor roll having an axle and bearings thereon set inwardly from the ends of the roll, the axle ends having attachments embodying collars enclosing said ends and cooperating with the bearings for positioning them on the axle, said attachments providing depending angle arms engageable with and by which the axle ends. may be removably supported by supportsplaced closely adjacent to the roll ends, and threaded fastening devices screwed to the axle ends engaging said collars for adjustably holding them in cooperative relation with the bearings, said attachments and fastenings constructed and arranged to permit close juxtapositionin back to back relation thereto of like parts ci other similar rolls when arranged in the relation shown. j

9. A conveyer roll having bearing-encasing hubs and bearingsv therein comprising tapered bearing rollers and cup and cone rings there- "for, said bearings arranged with their conical bearing surfaces converging inwardly, the cup rings being fitted in said hubs which are formed with thrust shoulders engaging the inner sides of said cup rings and with grease chambers at the inner sides of said bearings, a tubular axle on which said cone rings are mounted in communication with said grease chambers, and

angle pieces-on the axle ends-having bracket engaging portions `for detachable engagement with 'supporting brackets adjacent the roll ends and having axle housing portions cooperating with the cone-.rings of the bearings for positioning the same, screw bolts screwed into the ends of the tubular axle and constituting end closures therefor, the heads of said ybolts cooperating with said angle pieces to hold them in cooperative relation with said bearing cone rings and the said angle pieces having passages for communication with grease introducing means and in communication Vwith the grease duct in the axle. v `j 10. Ina structure of the class described, the combination with conveyor rolls arranged end to end on relatively inclined axes, said rolls having axles and bearings thereon set inwardly from the roll ends, of an interposed supporting bracket and a pair of angle pieces arranged back to back removably aixed to said bracket and embodying collars on the axle ends, said collars cooperating with the-bearings for maintaining them in proper position on the axle,` and eans comprising headed fasteningsscrewed to the axle ends against said collars for holding said collars in cooperativerelation with the bearings and adjusting the collars to adjust the bearings.

GEORGE N. VAN DERHOEF.Vv

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