US2319920A

US2319920A - Railway truck pedestal structure

Info

Publication number: US2319920A
Application number: US409948A
Authority: US
Inventors: Ernest F Dohe; William J Wilson
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-09-08
Filing date: 1941-09-08
Publication date: 1943-05-25
Anticipated expiration: 1960-05-25

Description

E. F. DOHE ET AL RAILWAY TRUCK PEDESTAL STRUCTURE Filed Sept. 8, 1941 May 25, 1943.

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Hu U 8 v w w 7 W m a W W 4 I 1 \m QQWQQQQQQRA Q HK l G @V m ERNEST F. DOHE WILLIAM J. WILSON BY ATTORNEY Patented May 25, 1943 RAILWAY TRUCK PEDESTAL STRUCTURE Ernest F. Dohe and William J. Wilson,

Omaha, Nebr.

Application September 8, 1941, Serial No. 409,948

9 Claims.

The invention relates to railway rolling stock and more particularly to truck pedestal and axle box assembly and consists in a novel mounting of the liner or journal box lateral motion device on the pedestal.

Because of the increased high speeds at which trains are being run, it has been found that to maintain a good riding truck the fits between the parts of the trucks which have movement relative to each other, such as axle boxes and the frame pedestals receiving the same, should be made as close as possible. It is desirable to have only a small amount of lateral and longitudinal play or clearance between the pedestal legs and the journal box so as to reduce as much as possible the effects of longitudinal and transverse shocks between the box and truck frame. It is also necessary that play between these parts shall not be increased excessively because of wear between the journal box and pedestal legs.

Efforts to obtain the desired results indicated above have been made by providing renewable liners on the pedestal legs and on the journal boxes so that a relatively hard material can be used which will keep the wear to a minimum and so that when wear does take place the liners may be renewed without replacing the frame or journal box parts.

The main object of the present invention is to provide a close flt between the pedestal and the box which will accommodate the necessary movement between the pedestal and the box vertically and transversely of the truck and at the same time avoid undue play or clearance longitudinally of the truck and preferably which includes a liner, or lateral motion device, and provides for the adjustable mounting of the liner on the pedestal to secure the desired result.

This and other detailed objects of the invention as will appear hereafter are attained by the structure illustrated in the accompanying drawing in which- Figure 1 is a side view of one end of a railway truck with a portion of one wall of the journal box and associated structure sectioned to more clearly illustrate the construction.

Figure 2 is a horizontal section taken approximately on the line 2--2 of Figure 1 and drawn to an enlarged scale.

The truck wheel I is mounted on the truck axle 2 which carries the journal box 3 provided with lateral wings l which support coil springs 5 on which rests the truck frame 6 including a pedestal jaw l for receiving the journal box between the pedestal legs 8. Movement of the box longitudinally of the frame is resisted by anchor rods 9 extending longitudinally of the box with their ends connected respectively to brackets Ill on the box and brackets ii on the frame.

This arrangement is disclosed and claimed in an application filed by James C. Travilla, Jr. and Otto Jabelmann June 26, 1941, Serial No. 399,838 and in itself does not constitute the present invention.

Each pedestal leg includes a transverse box opposing wall 12 and front and rear side walls l3 and M respectively. The adjacent portions of the journal box comprise a side wall l5, paralleling the leg wall I2, and front and rear flanges l6 and I1, paralleling the leg walls I3 and I 4.

A liner and lateral motion unit is mounted on the pedestal leg and slidably engages the journal box. This unit includes a U-shaped inner plate member I8 having a transverse portion IS with flanges 20 extending therefrom alongside of leg walls I3 and M. A pad 2! of rubber-like material has one face bonded or otherwise secured to portion l9, and its edges terminate substantially flush with the outer faces of flanges 20.

An outer plate member 22 is bonded or otherwise secured to the outer face of pad 2| and preferably is of U section with its flanges 23 paralleling but spaced from flanges 20. Member 22 clears the box side wall and has a sliding flt with the box flanges I! or with flanges 25 of a suitable wear plate 24 provided on the box.

This liner unit comprises a lateral motion device as disclosed in Patent No. 2,229,429, issued January 21, 1941, to James C. Travilla, Jr. It accommodates relative movement of the box and pedestal vertically of the truck, although such movement may be yieldingly resisted by anchor rods 9, but resists relative lateral movement between the journal box and pedestal, although yielding to forces tending to produce such relative transverse movement as are encountered when the vehicle enters a curve, when the resulting shocks will be cushioned by the shear resistance of pad 2|, and such shocks will be largely dissipated before reaching the truck frame and the car body.

The liner unit is held to the pedestal leg by a bolt-like device which includes a shank 26 extending through walls [3, H and flanges 20 and retainer plates 21 welded thereon, there being nuts 28 threaded on the end portion of shank 26 and having conical bases fitting the openings in the retainer plates. To adapt the mounting of the liner unit on the pedestal leg so that proper adjustment can be made between them, to avoid undue play between the journal boxes and the pedestal, and to render the holding device effective, the openings 29 in flanges 26 are enlarged to accommodate initial movement of the liner unit transversely of wall I2 to the correct position for engagement with box 3 in accordance with the centering of the latter in the pedestal, as determined, for example, by anchor rods 9.

In mounting the liner unit and lateral motion device on the pedestal, it is first applied over the pedestal leg and temporarily clamped thereon. Then element 26 is inserted and retainers 21 placed over the ends of element 26 and nuts 28 applied to the ends of element 26 and screwed down to lightly thrust retainers 21 against flanges 26.

If desired, a selective shim 30 of requisite thickness, or more than one such shim, may be placed between wall l2 and plate 19 to adjust the clearance between the box side wall and plate 22 and to provide a firm backing for plate l9. After the proper distance between the liners at opposite sides of the pedestal has been obtained,

nuts 28 are tightened and retainers 21 are permanently secured to flanges 20 as by one or more welds W or a continuous weld, applied in situ.

The openings in walls I3 and H for element 26 snugly seat the latter so that the liner will not shift from desired position after the assembly is completed.

This arrangement makes it possible to effect readily a desired adjustment of the liner, or lateral motion device, and the pedestal and to closely control the fit between the journal box and pedestal, Full annular bearings are provided between element 26, through nuts 28, and the liner unit and the pedestal walls. Hence repeated thrusts between the box and pedestal are unlikely to affect the mounting as would occur if the tapered portions of the nuts had only a line contact with the counter-sunk surfaces in plate 21 or if the bolt shank 26 had only a line contact with the openings in pedestal walls l3 and I4.

The liner unit illustrated and described embodies a lateral. motion device and in the appended claims the term liner is intended to cover a lateral motion device of the type described, but it will be understood that a simple liner plate, corresponding to element I8 but directly contacting the box wall and flanges, or wear plates thereon, may be mounted upon the pedestal in the same manner.

Other variations in the details of the construction may be made without departing from the spirit of the invention, and the exclusive use of such modifications as come within the scope of the claims is contemplated.

What is claimed is:

1. In combination, a railway truck pedestal leg, a liner therefor having a journal box opposing portion and a flange extending from said portion over the side of the pedestal leg, a holding device extending through the pedestal leg and said flange, the opening in the pedestal leg provi-ding a snug fit for said device, and the opening in said flange for said device being enlarged to accommodate movement of said liner portion towards and away from the pedestal leg, a member overlying said opening in said flange and the adjacent portion of said flange and apertured to closely fit said device, and separate means fixedly securing said member to said liner flange to prevent movement of said flange relative to said member, device and pedestal leg.

2. A structure as described in claim 1 in which the means securing the member to-the liner flange comprises welds applied to the member and the liner flange on a part of the latter facing exteriorly of the pedestal leg.

3. In combination, a railway truck pedestal leg, a liner therefor having a journal box opposing portion and a flange extending from said portion over the side of the pedestal leg, a holding device extending through the pedestal leg and said flange, the opening in the pedestal leg providing a snug fit for said device, and the opening in said flange for said device being enlarged to accommodate movement of said lin-er portion towards and away from the pedestal leg, a member overlying said opening in said flange and the adjacent portion of said flange and apertured to closely fit said device, and means applicable to said member and liner flange, after adjustment oi. said liner on said pedestal, for securing said member and flange relative to each other and thereby maintaining the position of the liner on the pedestal.

4. In combination, a railway truck pedestal leg, a liner therefor having a journal box opposing portion and a flange extending from said portion over the side of the pedestal leg, a holding device extending through the pedestal leg and said flange, the opening in said flange for said device being enlarged to accommodate movement of said liner portion towards and away from the pedestal leg, a vertically elongated plate overlying a substantial portion of said flange and apertured to receive and closely flt said holding device to afford an annular bearing for the latter, and means securing said plate to said flange at vertically spaced points near the top and bottom of the flange and plate and intermediate said points to distribute the thrust between said device and flange over an extended area.

5. In combination, a railway truck pedestal for receiving a relatively movable axle journal box and including a leg having front and rear walls and a transverse wall between them arranged to oppose a side of a journal box, a pedestal liner applied to said leg and including a portion extending across said wall and having flanges extending alongside the front and rear walls of the pedestal, a selective shim between said liner portion and the transverse wall of the pedestal leg, a bolt-like device extending through apertures in said pedestal front and rear walls, and through said flanges, and snugly seated in said wall apertures, the apertures in said flanges being enlarged to accommodate adjustment of said liner on said pedestal leg as required for shims of different thickness between the liner and the pedestal leg transverse wall, retainer plates overlying the apertured parts of said flanges and provided with openings, the bolt-like device comprising a shank with tapered units at its ends adjustable relative to each other transversely of the pedestal and fitting in said retainer plate openings, said retainer plates being welded in situ to said liner flanges.

6. In combination, a railway truck pedestal leg, a liner therefor having a journal box opposing portion and flanges extending from said portion over the sides of the pedestal leg, a holding device having an elongated shank extending through the pedestal leg and said flanges, the openings in said flanges for said device being members,

tending through said flanges, the openings in enlarged to accommodate movement of said liner portion towards and away from the pedestal leg, members overlying said openings and the adjacent portion of said flanges and having apertures to receive said device shank, tapered units on said device shank adjustable relative to each other transversely of the pedestal to snugly flt said member apertures, and separate means fixedly securing said members to said liner flanges to prevent movement of said flanges relative to said device and pedestal leg.

7. In combination, a railway truck pedestal leg, a liner therefor having a journal box opposing portion and a flange extending from said portion over the side of the pedestal leg, a plurality of holding devices extending through the pedestal leg and said flange and spaced apart vertically, the openings in said flange devices being enlarged to accommodate movement of said liner portion towards and away from the pedestal leg, a member securely engaging a plurality of the devices, and means securing said member to said flange at vertically spaced points to hold said devices and flange against relative movement and to distribute the thrust between said devices and flange over an extended area of said flange.

8. In combination, a railway truck pedestal leg, a liner therefor having a Journal box opposing portion and flanges extending from said portlon' over the sides 01' the pedestal leg, a plurality of bolts extending transversely through the pedestal leg and snugly fltting therein and also exfor said said flanges for said bolts being enlarged to provide for movement of said liner portion towards and away from the pedestal leg, a plate washer member overlying each flange and apertured for the corresponding ends of said bolts and fltting the same snugly, and means securing each of said plates to the corresponding flange at spaced points Iollowing adjustment of the liner and pedestal leg and distributing the thrustbetween the bolts and the liner over an extended area of the liner.

9. In combination, a railway truck pedestal leg with front and rear walls, a liner therefor having a journal box opposing portion'and flanges extending from said portion over the sides of the pedestal leg, said leg and flanges having apertures, a holding device extending through said apertures, and snugly seated in said wall apertures, the apertures in said flanges being enlarged to accommodate the adjustment of said liner on said pedestal leg, retainer plates overlying the apertured parts of said flanges and provided with tapered openings, said holding device being provided with tapered units thereon adjustable relative to each other transversely oi the pedestal and snugly fltting the tapered openings in said retainer plates, and means fixedly securing said retainer plates to said liner flanges to prevent movement of said flanges relative to said plates, devices, and pedestal leg.

ERNEST. F; DOHE. WILLIAM J. WILSON.