US1967822A

US1967822A - Railway truck construction

Info

Publication number: US1967822A
Application number: US660807A
Authority: US
Inventors: Oscar J Horger
Original assignee: Timken Roller Bearing Co
Current assignee: Timken Co
Priority date: 1932-03-15
Filing date: 1932-03-15
Publication date: 1934-07-24
Anticipated expiration: 1951-07-24

Description

July 24, 1934. o. J. HORGER 1,967,822

RAILWAY TRUCK CONSTRUCTION Filed March 15, 1933 4 Sheets-Sheet l Wyn/r0}.- Z5 (9% 1 Cam. m i

y 24, 1934- o. J. HORGER .RAILWAY TRUCK CONSTRUCTION Filed March 15, 1953 4 Sheets-Sheet 2 y 24, 1934- o. J. HORGER 1,967,822

RAILWAY TRUCK CONSTRUCTION Filed March 15, 193:5 4 Sheets-Sheet s July 24, 1934. o. J. HORGER RAILWAY TRUCK CONSTRUCTION Filed March 15, 1933 4 Sheets-Sheet 4 Potented July 24, 1934 rAr r Qt-mi;

RAILWAY TRUCK CQNSTRUCTION Oscar ll. Berger, Canton, lDhio, assignor to The I Tim'ken Roller Bearing (Company, Canton, Ohio,

a corporation or Ohio Application March 15, 1933;, Serial No. 664L807 ll @isims.

. My invention relates to railway trucks, particularly to the arrangement of the axle and hearing parts in the side frame members oisuch trucks. it is extremely dific'ult to install the usual type of roller hearing axle assemblies in conventional railway truck frames adapted for plain bearings due to the increased size of the roller bearings over the Plain ones. This is pa ticularly true in the case oi comparatively large integrally cast locomotive truck frames wherein it is impracticable to make the axle openings of the frame large enough to accommodate the nsual type of roller bearing axle housing as-.

semhlies.

The principal object of this invention. is to provide an axle and roller bearingassembly for a railway truck which will he able to withstand the stresses encountered, but which will he narrower in width than the usual type oi such sssernblies so that it can be installed in a plain bearing truck frame without'widening the axle openings thereof. it further object is to provide a construction of this type which is simple in construction and which is readily dismentled for inspection purposes and the like.

The invention consists principally in o. railway truck wherein the usual enlarged journal box portions of the housing that enclose the hear= ings are dispensed with, and wherein the outer bearing members or cups of the bearings are made to cooperate directly with the side frame members of the truck. The invention alsoconsists in removably attaching closure or housing members to the ends of the bearing maps so that they can be readily removed, and in constructing and arranging the bearing parts so that after the closure or housing members have been removed, the hearing parts can be readily moved along the axle into a convenient position for inspection purposes end the like. The invention further consists in the constructions and com binations and arrangements oi parts hereinafter des'cribedand claimed. i

In the accompanying drawings which form tort of this specification and wherein like rei= erence numerals refer to like parts wherever they seem,

Fig. i is an-end view, with the outer end of the time and wheel cut away, of an axle and bearing assembly 'embodying my invention and mounted in; a side frame member cl a. railway truck, and it is a view, along the line 11 in Fig. 2,

Fig. 2 is a central vertical section of the axleand bearing assembly, beings-view along the line 22 in F g. 1,

(Cl. its-'19) Fig. 3 is a central horizontal section along the line 3-3 in Fig. .2,

Fig. 4 is a vertical section along the line M in Fig. 2,

(Fig. 5 is a vertical section similar to Fig. 2 of to a modification oi the invention, U L

Fig. 6 is an end view partially in section or the split outer bearing member or cup used in the modification disclosed in Fig. 5,-

Fig. 'l is a side view oi the split hearing cup on shown in Fig. 6,

Fig/Bis a verticnl section similar to Fig. 2 of another modification oi the invention,

9 is a horizontal section along the line 9-9 in'Fig. 8,

it is a vertical section similar to Fig. 2

ct another modification oi the invention,

Fig. ll is a horizontal section mong the line llll in Fig. 10, and

Fig. 12 is a view looking at the inner end of the assembly shown in Fig. it with. the axle cut away, being a view along the line l2.12 in sis. is.

, In the accompanying drawings is shown a part oi a conventional integrally cast locomotive truck 3 1) side frame 1. having an axle opening 2 defined by pedestals whose bottoms are connected by a pedestal tie member 3.. The pedestal t on one side of the axle opening extends vertically, whereas the pedestal 5 on the other side thereof is inclined to make the opening wider at its bottom. The vertical pedestal t has a channel-shaped frame liner 6 fitted around it. The inclined pedestal 5 has a channel-shaped frame liner 7 fitted around it, which has a wedge-shaped web for 9Q cooperating with the inclined pedestal. Preferably, a holder block 8 is welded to the pedestal 4 above the top of the frame liner 6 for preventing vertical displacement thereof; and the wedgeshaped liner 7 is provided at its bottom with an adjustment. bolt 9 that has threaded engagement with thepedestal tie member 3 for preventme vertical displacement of said liner 7 and for adjusting its position.

In the preferred form of the invention shown in Figs. 1 to 4, inclusive, an axle 10, with a. wheel 11 fixed thereon, is disposed within the axle openme 2 in the side frame of the truck. An inner bearing member or cone 12 having two racewayportions, and having its smaller diameter at its of saidcone abuts against the end of an annular Q rib 13 provided on the axle; the outer end of said cone abuts against the end of a spacer ring Mm middle, is mounted on the axle. The inner end located on the inside of'the side frame.

14 fixed on the axle between said cone and the wheel 11.

Disposed within thev axle opening 2 of the truck side frame and mounted around the cone on the axle is an outer bearing member or cup 15 having two raceway portions that cooperate with those of the cone; and two circular sets of conical rollers 16, in suitable cages 1'7, are interposed between the cup and cone. The cup has a central rib 18 on its inner periphery at its middle for separating the two raceway portions thereof. The cup also has annular recesses 19 in its inner periphery at its ends for receiving rings 20 whose ends facing the middle of the bearing constitute thrust surfaces for the large ends of the conical rollers.

The bearing cup 15, instead of being made in the usual circular form, has flat sides 21, a flat top 22, and a flat bottom 23, making it generally rectangular in shape. The flat sides 21 of the cup directly engage the flat wear faces of the frame liners; and the usual load transmitting spring saddle members 24 of the truck are seated directly on the flat top 22 of the cup.

' The axle between the side frames of the truck is enclosed in a substantially U-shaped axle housing 25 that is provided with a top cover plate 26 which is removably secured to the axle housing as by bolts 2'7 extending through said cover plate and into threaded holes provided for such bolts in the top edge portions of the U-shaped hous ing. The end of said axle housing adjacent to the inner end of the bearing cup is flared out-laterally to form vertically disposed side flange portions 28 and an integral bottom flange portion 29, and the side flange portions are extended upwardly above the top of the U-shaped housing at its end. The cover plate 26 is provided with an upright flange portion 30 at its end which fills the space between the upwardly extended flange portions of the side flanges of the axle housing. This upright flange portion 30 of the cover plate 26 and the lateral

end flange portions

28 and 29 of the axle housing are provided with a series of bolt holes for receiving bolts 31 for securing the axle housing and its cover plate to the bearing cup. These bolts extend entirely through the cup from end to end thereof and are also used for securing an outer housing member or closure ring 32 to the bearing cup. The outer closure ring is mounted around the spacer ring 14 at the outer end of the bearing cone, and it is made generally rectangular in outline with the corner portions thereof cut away as at 33 for accommodating nuts 34 threaded on the ends of four comparatively large bolts 35 that extend through the side end flange portions of the axle housing and through the bearing cup near its respective corners.

Both the closure ring and the upright flange portion of the cover plate are arranged to keep the spring saddle members from sliding off of their seats on the top of the bearing cup. The upn'ght flange portion of the cover plate extends above the top of cup and has flange portions 36 at its sides that extend over the top of the cup to form a pocket for the spring saddle member Likewise, the closure ring extends above the top of the cup and has a pair of flange portions 3'7 that extend over the top of the cup to form a pocket for the spring saddle member located on the outside of the side frame.

The inner end of the closure ring abuts against the thrust ring at the outer end of the bearing cup for holding said ring in place; and the end of the axle housing and the flange portion of the cover plate are made to abut against the thrust ring at the irmer end of the bearing cup for holding said ring in place. Preferably, shims 38 conforming in shape to that of the respective ,ends of the bearing cup are interposed between its respective ends and the adjacent parts bolted thereto, said shims constituting means for adjusting the bearings.

The lateral side flange portions at the end of the axle housing extend beyond the sides of the bearing cup and are provided with thrust blocks 39 that have flat thrust surfaces facing the inner flanges of the frame liners for engaging the same for preventing excessive endwise movement of the entire axle and bearing assembly with respect to the truck frame. Such flange portions are, preferably, strengthened by integral webs 40 provided at the sides of the axle housing.

The construction hereinabove described may be readily dismantled as follows: The truck frame is jacked up and the entire wheel and axle assembly dropped therefrom. The bolts securing the axle housing, the cover plate, and the outer closure ring to the bearing cup are removed. The cover plate is then lifted from the axle housing and the axle housing dropped to the floor. With the cover plate and axle housing out of the way, the inner thrust ring is pulled out of its seat in the cup recess. This removal of the thrust ring allows the inner set of rollers and cage assembly to be pulled out of the cup and inwardly I along the axle and thereafter the cup, together with the outer set of rollers and cage assembly so that all of the bearing parts can be brought into a convenient position where they are completely exposed for inspection, or the like.

In the modification illustrated in Fig. 5, the position of the bearings is reversed from that shown in the preferred form. The inner bearing member or cone 12a has its largest diameter at its middle andis provided on its outer periphery at its middle with an annular positioning rib 41 and at its ends with annular thrust ribs 42; and 20 the outer bearing member or cup 15a is split at its center to allow removal of the bearing parts. The two half sections of the composite cup are, obviously, held firmly together by the

bolts

31 and 35 which secure the axle housing, the cover 5 plate, and the outer closure ring to the respective ends of the composite cup. Preferably, instead of splitting the bearing cup in a single plane, it is advisable to provide one of the half sections of the bearing cup with an annular flange 43 that projects from its end facing the outer half section of the cup and fits into an annular mating recess 44 provided therefor in the adjoining end of the other half section of the bearing cup. Also in some'instances, when the split type of bearing cup is used, it is advisable to further clamp the two half sections of the composite bearing cup together by the arrangement shown in Figs. 6 and '7. In this construction, each side of the composite bearing cups is provided with a central circular groove 45 which is slightly under-cut at its bottom, and a clamping ring 46 whose cross section corresponds to that of the groove is pressed in the groove. The clamping rings 46, when assembled within the 145 circular grooves 45, obviously, prevent the two half sections of the composite cup from spreading apart; and it is impossible for the clamping ring to worl; loose due to the undercut shape of the grooves.

menace With this form or the invention, the housing and bearing parts are readilydismantled as follows: The truck is jacked up, and the axle assembly dropped therefrom. The bolts holding the two half sections of the cup and securing the closure and housing members thereto are removed. The cover plate is lifted from the housing; the housing is dropped to the floor; and the wheel is removed. This leaves the axle and bearing parts exposed and by prying the clamping rings loose, the two half sections of the composite bearing cup are free to. separate so that the inner bearing parts can be brought inwardly along theaxle and the outer bearing parts outwardly along the axle'where they can be readily inspected.

'In the modification illustrated in Figs. 8 and 9, the general arrangement of parts and the position of the bearings are quite similar to thatoi the preferred fornroi the invention, except that the outer bearing member is provided at its middle on its outer periphery with an integral thrust rib 47 for the small ends of the rollers and at its outer end with an integral thrust rib it for the large ends of the outer set of rollers. The cone 12b atitsinner end is provided with an ular groove 49 in its outer periphery for receiving a split ring 50 snapped, or otherwise fitted therein, which holds a thrust ring 51 in place that encircles the cone and that is provided with a thrust surface for the large ends of the inner set of rollers. With this arrangement, the parts are readily inspected by removing the axle housing, the cover plate, and the outer closure ring in a manner similar to that for removing the same parts in the preferred term. With these parts removed, the split ring 50 removed from the groove 49 in which it is seated, which removal allows the thrust ring and the inner roller and cage assembly, followed thereafter by the cup and outer roller and cage assembly, to be moved inwardly along the axle.

In'the modification shown in Figs. 10 to 12, inclusive, the construction of the outer closure ring and of the bearing parts is similar in all respects to that of the corresponding parts oi the modification illustrated in Figs. 8 and 9 and just described. However, in this form of the invention, instead of using a U-shaped axle housing that extends between the side frames of the truck, a housing member in the form of a comparatively large inner closure ring 52 is bolted to the inner end or" the. bearing cup 15?) in a manner similar to that of bolting the U-shaped axle housing to the cup in the other forms of the invention. This inner closure ring encircles the integral cone engaging thrust rib. 13 provided on the axle. Said closure ring 52 extends above the top of the bearing cup and-is provided with flange portions 36c, extending over the top of the cup to form a pocket for the inner saddle member 24; and the side portions of said closure ring 52 extend beyond the sides of the bearing cup and support the thrust blocks 39 bolted to said side portions for engaging the inner flanges of the frame liners for preventing endwise movement of the axle assembly. The steps required-for dismantling this form of construction are, obviously, quite similar to those'described in connection with the other .iorms of the invention; it is believed unnecessary to describe such steps in detail.

With the constructions hereinabove described, by forming the bearing cupsso that they cooperate directly with the side members of the truck,

or cup 15? is madeplain; and the inner bearing member or cone 12b I an axle and bearing assembly, conforming to my invention can be made considerably narrower than the usual type of such assemblies that areprovided with bearing housings. Accordingly, my axle and roller bearing assembly can be installed in a conventional truck frame adapted for plain bearings at a comparatively low, cost. In equipping a conventional plain truck frame with my axle and roller bearing assemblies, the only work required to be done on the pedestal members of the truck frame is to machine such members slightly to straighten them out and to properly aline them; and in some'cases where the pedestal members are not worn to any great extent, such slight machining operations may even be unnecessary.

As pointed out hereinabove, the axle and roller bearing assemblies embodying my invention are readily dismantled so that the bearing parts thereof can be broughtinto a convenient posi-. tion where they are readily accessible for inspection purposes, and the like. Furthermore, it is to be notedthat the constructions are extremely simple. They can be made for about the same cost as that of the usual type of roller bearing axle constructions which could only be installed in a plain bearing truck frame by making the axle openings wider which would involve considerable e and which widening of the openings would have the disadvantage of weakening the frame.

Obviously, the constructions hereinabove described admit of considerable variations without departing from the scope of the invention; ac

cordingly. I do not wish to be limited to the precise constructions and arrangements of parts shown and described.

What I c is:

l. The combination of a railway truck frame, an axle, roller bearings mounted thereon, said bearings each comprising an outer raceway member formed with its exterior side surfaces substantially vertical for direct cooperation with the side frame members oi said truck. frame, a housing extending partially around said axle withits ends secured to the inner ends of said raceway members, and newer removably secured to said housing for completely enclosing said axle, the ends of said cover and said housing being removably secured to the ends of-said outer raceway members.

2. The combination of a railway truck, frame, an axle, roller bearings mounted thereon, said bearings each comprising an outer raceway member formed with its exterior side surfaces substantially vertical for direct cooperation with the side frame members of said truck frame, a substantially U-shaped housing mounted around said axle with its ends secured to the inner ends of said raceway-members, a cover secured to said housing for completely enclosing said axle, a closure ring mounted around said axle at the outer end of said bearings, and means extending through each outer raceway member from end to end thereof for securing the axle housing, thecover therefor, the closure ring and said outer. raceway member.

3. The combination of a railway truck frame, an axle, roller bearings mounted thereon, said bearings each comprising an outer raceway mem-' ber formed with its exterior side surfaces substantially vertical for direct cooperation with the side frame members .of said truck frame, said outer raceway member having annular recesses in its inner periphery at its ends. thrust rings for the bearing rollers disposed in said recesses, and housing members mounted around said axle with its ends secured to the inner ends of said raceway members, said housing members abutting against said thrust rings for holding them in place.

4. The combination of a railway truck frame, an axle, roller bearings mounted thereon, said bearings being provided with an outer raceway member formed with its sides substantially vertical for direct cooperation with the side frame members of said truck frame, said outer bearing member having annular recesses in its inner periphery at its ends, thrust rings for the bearing rollers disposed in said recesses, a substantially U-shaped housing mounted around said axle and means for fastening the ends of said housing to the inner ends of said outer raceway members, a cover plate secured to said housing, the ends of said cover plate and said housing abutting against the inner thrust ring to hold it in place, a closure ring mounted around said axle at the outer end of said bearings, said closure ring abutting against said outer thrust ring to hold it in place, said fastening means comprising bolts extending through said outer raceway members, the housing, cover plates and closure rings.

5. The combination of a railway truck frame, an axle, roller bearings mounted thereon, said bearings being provided with an outer bearing member formed for direct cooperation with the side frame members of said truck frame, a housing member mounted around said axle at the end of said bearings, the side portions of said housing extending beyond the sides of said outer bearing member, thrust members provided on the side portions of the housing member for cooperating with the pedestal members of the truck frame, and means extending through said side housing member and into said outer bearing member for securing said housing member thereto.

6. The combination of a railway truck frame, an axle, roller bearings mounted thereon, said bearings being provided with an outer bearing member formed for direct cooperation with the side frame members of said truck frame, a housing mounted around said axle at the end of said bearings, the end of said housing adjacent to the bearings being flanged out laterally to form side flange portions which extend beyond the sides of said outer bearing member, thrust members provided on said side flange portions of the housing for cooperating with the pedestal members of the truck frame, and bolts extending through said side flange portions and into said outer bearing member for securing said housing thereto.@

'1. The combination of a railway truck frame having spring saddle members, an axle, roller ,bearings mounted on the end portions of said axle and each having an outer raceway member, and a housing for said axle with its ends rigidly secured to the inner ends of said outer raceway members, the spring saddle members being seated directly on the'top of said outer raceway member, the upper end portions of said housing members extending upwardly beyond the tops of said raceway members to help keep said spring saddle members on their seats.

8. The combination of a railway truck frame having an'inner spring saddle member and an outer spring saddle member, an axle, roller bearings including an outer bearing member mounted thereon, the spring saddle members being seated on the top of said outer bearing member, a substantialLv U-shaped housing mounted around the axle at the inner end of said bearings and secured to said outer bearing member, a cover plate secured to said housing and having a flange portion at its end extending above the top of the outer bearing member and cooperating with the inner spring saddle member for keeping it seated on the top of the outer bearing member, a closure ring mounted around said axle at the outer end of the bearings, and secured to said outer bearing member, the upper portion of said closure ring extending above the top of the outer bearing member and cooperating with the outer spring saddle member for keeping it seated on the top of the outer bearing member.

9. The combination of a railway truck frame, an axle vertically movably mountedtherein, roller bearings mounted on said axle and each comprising an outer bearing member with substantially vertical outer sides adapted for vertical sliding in the frame and a substantially horizontal top surface adapted to constitute a seat for a saddle member, a housing rigidly connecting said outer bearing members together, said outer bearing members each having two raceway portions and being split between such raceway portions, and means extending through the hous- 'ing members and the two half sections of the outer bearing member for holding them all together.

10.- The combination of a railway truck frame, an axle vertically movably mounted therein, roller bearings mounted on said axle and each comprising an outer bearing member with substantially vertical outer sides adapted for vertical sliding in the frame and a substantially horizontal top surface adapted to constitute a I seat for a saddle member, a housing rigidly connecting said outer bearing members together, said outer bearing mefnbers each having two raceway portions and being split between such raceway portions, the half sections of the outer bearing member having'semi-circular grooves in their sides that form circular grooves when the two half sections of the outer bearing member are placed together, and rings in said grooves for holding the two half sections of the outer bearing member together.

11. The combination of a railway truck frame having an axle opening, an axle vertically movably mounted in said opening, an inner bearing member mounted on said axle near each end thereof, an outer bearing member mounted