US1748131A - Mine car - Google Patents

Description

W. V. JOHNSON MINE CAR Filed Feb. l, 1925 Fel. 25, 1930.

,15 nal boxes shown in Fig. 1;

Patented Feb. 25,1930

UNITED STATES PATENT OFFICEl WARREN V. JOHNSON, OEBLOOMSBURG, PENNSYLVANIA, ASSIGNOR TO AMERICAN CAR .AND FOUNDRY COMPANY, OF NEW YORK, N. Y., A CORPORATION OF JERSEY l Reference is had to the accompan ing drawings which illustrate the preferred orm of the invention, though it is to be under-A stood that the invention is not limited to the exact details of construction shown and 'described, as it is obvious that various modifications thereof within the scope of the claims will occurjto persons skilled in the art.

In said drawings:

' Figure' 1 is an elevational view partially in Isection and looking from-the en-d of a mine car, of an axle and journal boxes constructed in accordance with the invention;4

Fig. 2 is an end view o'f the axle and jour- Fig. 3 is an elevational view of the sleeve lproj ecting through the journal box -Fig. 4 is an end elevational view of the sleeve shown in Fig. 3, and

Fig. 5 is an end view of the collar on the car axle.

One object of the invention is to provide a mine car with outside bearing boxes having roller bearing assemblies which can be adjusted to compensate fprwear and which can be removed from the wheel axle without disturbing the a-djustment thereof. VJournal boxes of mine cars are commonly of the inside type as in my Patent No. 1,605,440, November 2, 1926, with Vfriction reducing rollers in the wheel as illustrated in that patent, that is, there are two such journal boxes as 20 therein disposed near opposite ends of the axles between the supporting wheels. When wider car bodies are desired, of increased capacity, journal boxes on the axles and outside of the wheels have been positioned underthe car sills vas 1-2 herein and stra-ight cylindrical rollers f used as lfriction reducing means, as illustrated in my Patent No. 1,534,123, of April 21, 1925, but adjustment to compensate for wear of such vrollers is practically impossible without removal of the rollers from the assembly. hencethe tapered roller of the well known Timken type is sometimes used, though heretofore there has been provided in mine cars no convenient means of adjustments thereof to compensate for wear for the reason that, without -my invention, readj ustment and usually re-assembly of the roller bearings has MINE CAB Application filed February 1, 1926. Serial No. 85,312.

permits a new wheel to be substituted for one that has'become worn withoutidisturbing the bearing adjustment. l

Another object of the invention is to provide a mine car axle with outside journal boxes having conical roller bearing assemblies which may be conveniently adjusted when in position on 'the axle and which may be removed without disturbing the' adjustment, and furthermore mounted in each journal box is a sleeve which serves to carry the roller bearing assemblies and to connect the wh'el to the axle and insure its rotation therewit v In many structures such for example as the"-` journal boxes on mine cars,- anti-friction bearing assemblies are provided which are diicult to adjust and which are not adapted to be removed from the axle without spoiling the bearing adjustment. In the journal boxes herein shown on a mine car axle roller bearing assemblies are provided which are 'pref-4 erably of the conical type and which are easily adjusted to compensate for wear When in position on the car axle.

Referring to the drawing, the side sills 1 and 2 of a mine car are shown mounted on two outside journal boxes 3 and 4. The journal boxes are carried by an axle 5 which extends through wheels 6 and 7. The journal boxes 3 and 4 aie similar in construction and .accordingly only one journal box will be detwo ribs 32 and 33 extending around a portion ofthe outside circumference thereof and terminating in lugs 34 each having an` opening therethrough for receiving securing bolts 5 10. The sill plate 8 is provided with downwardly projecting ears 35j having openings vtherethrough in alinement with the openings in the lugs 34 toreceive the bolts 10 to retain the journal box in position. Within the journal box are mounted two roller bearing assemblies 36'and 37. The raceways of each of these roller bearing assemblies 36 and 37 are what I term correlatively oblique; i. e., one,

at least, of the cooperating raceways of each assembly hassome extent radially with refi c l c erence to the axis of.rotat1on, so that shifting of such cooperating raceways in an axial dif rection relative to one another will adjust the space between them. The roller bearing assembly 36 comprises an outer race member '38, an inner race member 39 an-d interposed conical rollers 40. Asshown, the raceways y.38 and'39 are not only correlatively oblique, withreference to the axis of rotation, as above explained` but are both of them individually oblique relative to said axis, and also relatively oblique 'with reference to each other. The outer race member 38 is secured to the bottom portion l9 of the bearing box and the inner 3;) race member isvmounted on a sleeve member 14 so as to be movable for adjusting the bearing assembly. The rollers 40 are .formed as a rustum of a cone in shape and the bearing surfaces of the race members are inclined to tit the rollers. The roller bearing assembly 's 37 is provided Iwith an outer race member 41, an inner'race member 421and rollers 43 which are similar in construction and mounting to he parts in the roller bearing assembly 36. 40 The two outer racemembers 38 and 41 in the two bearing assemblies are positioned adja,

cent to a .rib 13 formed in the journal box and the open space within the journal box between the rib 13 and the sleeve 14 is adaptedbe lled with lubricating material.` The sleeve member 14 projects througlrthe journal box and is mounted on the axle. A

= bolt 16, which projects through openings 174 in the sleeve andanopening 18 in the axle,v

serves to secure the sleeve to the axle and insuresl its rotation therewith. The sleeve is alsoprovided with ylugs 19 which proj ect/'into orifices 20 formed in the hub 21 of the wheel which in the case under consideration is the wheel l6. By such means it is apparent that the axle, sleeve and wheel are locked'together v in order to have common rotative'moveinent. The wheel 6 is not only connected to the axlel by means of the lugs 19 on the sleeve 14 but-is shown connected to the axle b meansof a collar 22. The collar 22 is ixedly secured to the axle by being shrunk or pressed in position. Such collar 22 is provided with lugs 2'3projecting into orifices 24 formed in the end of the wheel hub 21. It is to be understood that if so 'desiredthe wheel may be con- -theejournal box. A castle nut 28 is threadably connected to the sleeve 14 adjacent to the collar 27 for adjusting the roller bearing assemblies 36 and 37 to compensate for wear. In adjusting the position of the castle nut on the axle it is apparent the movable dust collar 27 is operated to adjust the positions of the inner race membersA of the bearing assemblies, so that the adjustment of the bearings is effected and maintained independently of any other parts, and is unaffected by removal of the parts from the axle. The longitudinal movement of the inner raceM members serves to ,adjust the bearing assemblies for wear by reason of their wedge shape or'correlative Obliquity, as above explained. The castle nut is held in any adjusted position by means 'of a cotter pin 29 which projects through the sleeve 14 vand the axle 5.

In the above described construction for a mine car it will be noted the axle 5 is e providedA with outside journal boxes adjacent to theh'wheels 6 and 7 .j Each of the outside journal boxes is provided with roller bearing assemblies which maybe adjust-ed conveniently and the journal Vboxes may be removed without in any manner dis turbing the adjustment of the roller bearing assemblies. If it is desired to remove a wheel from the axle it is only necessary to remove the bolt 16, which secures the sleeve to the axle, and to remove the bolts which secure the journal boxin position. Inasmuch as the roller bearing assemblies are adjusted by means of the nut 28 -on the sleeve it is apparent the removal of the sleeve and journal box in no way affects the adjustment of the bearing assemblies. After removal of the sleeve and journal box the wheel may be removed with ease. K

- What is claimed is:

1. In combination, a car axle extending f through a wheel and adapted to rotate therewith, a sleeve removably mounted on the axle, an outside journal box, a plurality of anti-friction bearing assemblies removably mounted on the sleeve in said box comprising y -maintaining their adjustment when journal box and bearings are removed from the axle. 2. In ombination, an axle having a collar lixedly secured thereto, a wheel mounted onY the axle and connected to said collar 'for rota-l tlon therewith, an outside journal box carried on the axle and having recesses formed therein to receive lugs projecting from said collar, an outside journal box carried by the axle, roller bearing means in said journal box, a sleeve secured to said axle and extending through said journal box and roller bearing means, and means carried by said-sleeve for adjusting said roller bearing means.

4. In combina-tion, an axle having a collar and a sleeve secured thereto, a car wheell mounted on the axle between and connected to the sleeve and said collar, an outside journal box having roller bearing means therein, said sleeve having a dust collar formed integral therewith for one side of said journal box, a detachable dust collar for the opposite side of saidjournal box, and means carried by said sleeve for adjusting said roller bearing means.

5. In combination, an axle having a car wheel mounted thereon, an outside journal box on the axle,a sleeve on the axle projecting through said journal box, said 'sleeve being secured to the axle and having lugs projecting into recesses in said wheel for compelling the wheel, sleeve and axle to rotate together, roller bearing means in said journal box, and meansy carried by saidy sleeve for adjusting said roller bearing means.

6. In combination with a car axle` a mounting therefor comprising a journal box and a sleeve on said axle, tapered rollers, a plurality of inner and outer inclined raceways for said rollers, said inner raceways being mounted on the sleeve, means for simultaneously adjusting said inner raceways relative to each other to compensate for wear, and means for retainingsaid raceways in adjusted relation when said mounting is removed from an axle.

7 In combination, a car axle, an outside journal box, roller bearing means for the axle' in said journal box comprising a plurality of pairs of correlatively oblique inner and outer raceways, a sleeve detachably secured to the axle and projecting through the said journal box and on which the inner raceways are mounted for movement relain said journal box comprising a plurality of inner and outer raceways having roller bearings therebetween, a sleeve mounted on the axle and on which the anti-friction means are mounted, and means on said sleeve for adjusting the inner raceways axially to vary the space between them to adjust the anti-friction means, said journal box, sleeve and anti-friction means being removable from the axle without disturbing the adjusted position of ysaid anti-friction means.

9. In combination with an axle, an antifriction mounting therefor comprising a plurality of bearing assemblies each having inner and outer raceways with roller bearings interposed therebetween, a sleeve on the axle upon which said assemblies are mounted, means for adjusting the inner raceways relative to the outer raceways whereby to adjust the assemblies, and a journal box in which said sleeve and bearings are mounted, said sleeve and adjusting means being so formed as to permit removal of the mounting in assembled relation.

10. An axle mounting comprising a unit freely removable from the axle including a journal box, a sleeve secured to the axle, and spaced bearing assemblies interposed between the sleeve and journal box, each of said assemblies comprising an outer raceway and inner raceway mounted on the sleeve and roller bearings interposed between said raceways, and means for retaining said j ournal box, bearing assemblies andsleeve in assembled relation, said means being movable to move at least one of said inner raceways axially whereby to adjust the bearing assemblies.

11. An axle mounting comprising a journal box having an annular recess at each end thereof, an outer raceway seated in each recess and removable therefrom, a sleeve mounted on the axle and provided with a retaining lange, inner raceways mounted on the sleeve, one thereof arranged adjacent the retaining flange, roller bearings interposed between-the inner and outer raceways, and means on the sleeve for retaining the journal box, raceways, roller bearings and sleeve in assembled relation when the sleeve is on or removed from the axle, said retaining means being movable to adjust the inner raceways relative to each other and relative to the outer raceways to compensate for wear of said roller bearing.

In witness whereof I have hereunto set my hand.

WARREN V. JOHNSON.

Images