US2258657A

US2258657A - Railway motor truck

Info

Publication number: US2258657A
Application number: US279248A
Authority: US
Inventors: William H Meyer
Original assignee: General Steel Castings Corp
Current assignee: General Steel Castings Corp
Priority date: 1939-06-15
Filing date: 1939-06-15
Publication date: 1941-10-14
Anticipated expiration: 1958-10-14

Description

, 1939 6 Sheets-Sheet l Ill W. H. MEYER RAILWAY MOTOR TRUCK Filed June 15 Oct. 14, 1941.

INVENTOR WILLIAM H. MEYER BY M ATTORNEY.

Oct. 14, 1941'. w. H. MEYER 2,258,657

RAILWAY MOTOR TRUCK Filed June 15, 1939 6 Sheets-Sheet 2 l l\ m WILLIAM H. MEYER BY ATTORNEY.

Oct. 14, 1941 w. H. MEYER RAILWAY MOTOR TRUCK Filed June 15, 1939 6 Sheets-Sheet 3 FIG. 8.

INVENTOR WILLIAM H. MEYER BY @04 ATTORNEY Oct. 14, 1941. w, MEYER RAILWAY MOTOR TRUCK Filed June 15, 1939 6 Sheets-Sheet 4 FIG. 10.

JNVENTOR WKLLIAM H. MEYER BY 43%,

flwzzzq ATTORNEY Oct. 14, 1941. w. H. MEYER 2,258,657

RAILWAY MOTOR TRUCK Filed June 15, 1959 6 Sheets-Sheet 5 FIG. 13.

INVENTOR WILLIAM H. MEYER BY Cdv M ATTORNEY.

Oct. 14, 1941. w. H. MEYER RAILWAY MOTOR TRUCK Filed June 15, 1939 6 Sheets-Sheet 6 FIG. 14.

FIG. 15.

INVENTOR WILLIAM H. MEYER BY ATTORNEY Patented Oct. 14, 1941 RAILWAY MOTOR TRUCK William H. Meyer, St. Louis, Mo., assignor to General Steel Castings Corporation, Granite City, 111., a corporation of Delaware Application June 15, 1939, Serial No. 279,248

12 Claims.

The invention relates to railway rolling stock and more particularly to railway trucks of the type which includes axle driving motors and conduits for delivering air to the motors to cool the same. Usually air compressors or blowers are carried by the vehicle body mounted on the trucks and a problem arises in conducting the air from the vehicle body to the motors in the trucks.

Heretofore such trucks have included air passageways leading from the body uhderframe through the truck center plate into the truck bolster and then into an air passageway formed in the truck frame and then to the motor housing, there being flexible connections between the bolster and the truck frame and between the truck frame and the motor housing to accommodate relative movement of these parts particularly, as is usually the case, Where the bolster is mounted upon springs supported from the truck frame by swing hangers.

In this type of truck it is desirable to use elliptic springs but to allow for the swinging of the truck bolster and to obtain suflicient clearance between that portion of the bolster forming an air passageway and the inner end portions of the elliptic springs it has been deemed necessary to locate the swing hangers at the outer side of the frame wheel pieces and to extend the cross bolsters laterally beneath the wheel pieces and, accordingly, to utilize straight equalizers between the axles. Such outside swing hanger arrangement is not adapted for the use of equalizers depressed between their ends and the bolster springs must be located at a lower level than is necessary when inside swing hangers are used it the standard heights above the rail for the truck frame and center plate are to be maintained.

One object of the present invention is to simplify and reduce the weight and cost and maintenance expense of a swing hanger truck with air passageways to the motors.

Another object of the invention is to make the air passage from the truck bolster center plate to the motors of substantial cross section and to avoid sharp angles or bends and thereby to reduce resistance to the current of air.

Another object of the invention is to provide ample clearance between the bolster springs and the rail and other truck parts.

Another object of the invention is to provide for the use in a truck of this general type of depressed or drop equalizers and inside swing hangers.

These general objects and other more specific objects are attained in the structures illustrated in the accompanying drawings in which- Figure 1 is a top view of one longitudinal half of a six wheel motor truck embodying one form of the invention.

Figure 2 is a side elevation and longitudinal vertical section taken on the line 22 of Figure 1.

Figures 3, 4 and 5 are vertical transverse sections taken on the corresponding section lines of Figure 2, Figure 3 showing a portion of the vehicle underframe,

Figure 6 is a top view of a substantial part of a similar truck embodying another form of the invention.

Figure 7 is a longitudinal vertical section taken on the line 'l'l of Figure 6.

Figure 8 is a transverse vertical section taken on the line 8-8 of Figure 6.

Figures 9, l2 and 14 correspond to Figure 6 but illustrate different forms of the invention.

Figures l0, l3 and 15 correspond to Figure 7 but are taken on the corresponding section lines of Figures 9, l2 and 14 respectively.

Figure 11 corresponds to Figure 8 but is taken on section line I l--H of Figure 9.

The truck illustrated in Figures 1 to 5 inclusive includes wheels I, axles 2, motors for driving the end axles, the housings of which motors are indicated at 3, journal boxes 4, depressed equalizers 5 extending between adjacent journal boxes, coil springs B seated on the equalizers and supporting the truck frame. All of this structure is of familiar form.

The truck frame includes wheel pieces 1, resting upon the truck springs 6, and transverse transoms each comprising a pair of

lower elements

8 and 9 respectively extending inwardly from the wheel pieces and then extending downwardly and then transversely of the truck. The outer member of the transom also includes an upper element I0 extending between the wheel pieces and at substantially the same level. Suspended from the upper end portions of the transom members are swing hangers II. The lower ends of each pair of hangers are connected by a cross bar l2, and a spring plank I3 extends between the cross bars l2 at opposite sides of the truck. Elliptical springs l4 are seated upon spring planks I3 and mount the truck bolster which consists of a central portion provided with a center plate l5, arms i5 extending longitudinally of the truck, and cross bolsters H at the outer ends of arms l6 and spaced from center plate l5 and extending alongside transom element l0 and above the level 01'

transom elements

8 and 9 and resting upon springs l4. Side bearing brackets [8 project outwardly and upwardly from bolster arm I6.

The above described general arrangement is well known in the art although some of the parts described possess novel details.

Center plate is of hollow construction and is adapted to receive air from a blower mounted on the vehicle underframe U as has been previously disclosed, for example, in Sheehan Patent 1,634,307 issued July 5, 1927. Ducts I9 lead downwardly and longitudinally of the truck from beneath center plate l5 and terminate in outlets facing towards the end of the truck.

A conduit 2| leads from each duct I!) over transom element 8, and spring plank l3, and is connected to a duct 22 extending longitudinally and transversely of the truck (see Figure 1) to an opening provided in the corresponding motor housing 3 at a point on the latter near the adjacent wheel piece 1. Duct 22 may be rigid with motor housing 3 and considered a part thereof for the purposes of this disclosure. Preferably conduit 2| has bellows connections 23 to ducts I9 and 22.

The motors are supported upon axles 2 and upon springs 24 mounted on brackets 25 on the adjacent transom elements 9 in a well known manner whereby the inner end of the motor may move vertically relative to the truck frame. Bolster I5-I6-|1-|3 moves vertically relative to the truck frame due to the action of springs l4 and moves transversely of the truck frame due to the swinging action of hangers N. All of such movements are accompanied by movement of elements l9. 2| and 22 relative to the transom and these parts are proportioned and arranged to provide adequate clearance between them and between the air conduit and passageways and the inner ends of springs l4.

Figures 6, 7 and 8 illustrate a form of the in- 12 vention in which the swing hangers 26 are suspended from brackets 2'! at the outside of the frame wheel pieces 28. This arrangement positions the leaf springs 29 substantially farther from the longitudinal center line of the truck than the springs in the structure previously described. The air passage from bolster center plate 30 to motor 3| is through a bolster longitudinal arm 32 and a portion of the bolster transverse arm 33 and a duct 34 depending from arm 33. A relatively short conduit 35 flexibly connects the discharge outlet of duct 34 with the inlet of the motor housing. The truck frame transom elements 36 and 3'! correspond to elements 9 and Ill in the structure previously described and are spaced from each other to accommodate conduit 35.

This construction eliminates the additional depending passageway structure at the center of the bolster as previously described and also avoids the necessity of an elongated and transversely extending conduit structure as indicated at 2| and 22 in Figure l, the relatively short bellows type conduit 35 directly connecting the end of passageway in the bolster and a portion of the motor housing adjacent to the truck frame wheel piece.

Figures 9, l0 and '11 illustrate another form of the invention. in which the swing hangers 4'!) are suspended from the elevated ends of the transom elements 4| and 42 at the inner side of the frame wheel pieces 43. The middle portion of transom element 42 is. of sufficient depth to provide necessary strength for bracing the wheel pieces andv carrying the motor 44.

The air passageway leads from center plate 45 through the bolster longitudinal arm 46 and across the bolster transverse arm 41 to an outlet at the same level as the major portion of the bolster and of the frame wheel pieces 43. This outlet is connected to the motor housing at the same level by a bellows type conduit 48 similar to that shown in Figures 6-8. While this conduit is not positioned inwardly of the bolster springs 49 as in both of the constructions previously described it clears the bolster springs by passing over the inwardly projecting portions thereof and also clears the top of transom element 42 so as to avoid interference with the relative movement of the bolster and motor relative to the truck frame and bolster springs.

Figures 12 and 13 illustrate a truck in which a frame, bolster supporting structure, bolster and motor are constructed and arranged similarly to the truck shown in Figures 9-11 but transom element 5B is of greater depth and its top is at a greater height above the rail. The air is led from an upwardly facing outlet 5! in the bolster to an upwardly facing inlet 52 in the motor housing by a conduit 53 which extends upwardly above the level of the bolster and the truck frame, passing over transom element 5|! and discharging downwardly to inlet 52 through a flex ible connection 54. If desired conduit 53 could be formed integral with the bolster.

In some equipment there is ample room between the top of the truck frame and the bottom of the vehicle underframe to accommodate a conduit of this type and where such an arrangement may be used the problem of clearing the truck transom and the bolster springs is readily solved by the structure described.

Figures 14 and 15 illustrate another truck in which the air passageway leads from beneath center plate 60 through a duct 6| extending longitudinally and upwardly and positioned on the longitudinal center line of the truck and terminating in an outlet facing towards the end of the truck. A separately formed rigid conduit 62 is flexibly connected to the outlet duct 6! and to a longitudinally facing inlet in a duct 53 provided on the motor housing. Conduit E2 passes over the bolster transverse arm 64 and over the deep transom element 65 and there is no problem attending the clearance of the bolster springs 05.

In all forms of the invention the air passageway from the truck center plate to the motor includes a conduit independent of the transom and passes over transom elements extending between the wheel pieces and clears all the transom parts and the bolster springs and associated structure. The structure avoids sharp offsets and varying cross sections of the conduit as present in previous structure where the conduit is formed as a part of the transom and the structure also eliminates sliding. connections between the trainsom and the bolster as has been used previously to form a continuousv conduit between theswlng bolster and] the truck frame transom;

The arrangement. is adapted. for numerous combinations of, passageways formed in the botster itself and various connections between the air passageway in the bolster and the' motorso that almost any arrangement of the truck frame, bolster suspension and vehicleundertrame may be accommodated.

While the structure illustrated in the drawings is embodied in 6 wheel trucks it may also be embodied in 4 wheel trucks with swing. holsters with slight modifications and the details of the bolster and transom structure and the connection between the bolster and the motor may be modified in other ways than indicated without departing from the spirit of the invention and the exclusive use of such modifications as come within the scope of th claims is contemplated.

What is claimed is:

1. In a railway truck, a frame including wheel pieces and a transverse transom having an element extending between said wheel pieces, swing hangers pivotally suspended from said frame, elongated leaf springs carried by said swing hangers and extending inwardly of the frame from said wheel pieces, a bolster at one side of said transom and mounted on said springs and movable thereon relative to said hangers and frame and movable with said hangers and springs relative to said frame and including an air passage, an axle driving motor at the other side of said transom, and a conduit, extending at the level of and between said springs and over said element and movable independently of said transom and leading from said bolster air passage to a, portion of said motor adjacent to the side of the truck.

2. In a railway six wheel truck, a frame including a transverse transom having a horizontal opening extending therethrough longitudinally of the truck, a bolster overlying the middle axle of the truck and being at one sid of said transom and movable relative thereto and including an air passage, an axle driving motor at the other side of said transom and a conduit movable with said bolster independently of said transom and leading from said bolster air passage through said transom opening to said motor.

3. In a railway six wheel truck, a frame including a transverse transom having verticall spaced top and bottom members extending from side to side of the truck frame, a bolster overlying the middle axle of the truck and being at one side of said transom and movable relative thereto and includin an air passage, an axle driving motor at the other side of said transom, and a conduit movable with said bolster and motor independently of said transom and extending from said bolster air passage between said top and bottom members to said motor.

4. In a railway truck, a frame including wheel pieces, a pair of adjacent transom elements extending inwardly and downwardly from one of said wheel pieces and transversely of the truck and then upwardly and outwardly to the other wheel piece, swing hangers pivotally suspended from the elevated end portions of said transom elements, leaf springs mounted on the swinging ends of said swing hangers and extending inwardly of said frame between said elements, a bolster including a center plate at one side of said pair of transom elements and an arm extending therefrom longitudinally of the truck over the inner of said elements and supporting the bolster on said springs, said bolster forming an air passageway including an inlet through said center plate and an outlet adjacent the outer of said transom elements, an axle driving motor at the side of said transom elements opposite said bolster, and a separately formed air conduit leading from said bolster to said motor and clearing said transom elements.

5. In a railway six wheel truck, a frame including a transverse transom, a lateral motion bolster having a center plate over the middle axle of the truck and an arm extending therefrom longitudinally of the truck and a cross bolster at the end of said arm and between the middle axle and an end axle and extending along one side of said transom, an axle driving motor at the opposite side of said transom, there being an air passageway formed by said center plate, arm and cross bolster, and a connection clearing said transom between said motor and the portion of said cross bolster forming a part of said passageway.

6. In a railway truck, three wheeled axles, a frame carried thereby and including transverse transom elements, motors mounted on the end axles and said transom elements, a lateral motion bolster carried by said fram and including a hollow center plate positioned over the middle axle, an air passageway leading downwardly from said center plate to one side of the middle axle and then longitudinally of the truck, at the level of said middle axle, to the adjacent motor and clearing the intermediate transom elements.

7. A truck as described in claim 6 which includes swing hangers suspended from the ends of said transom elements and elongated leaf springs extending inwardly therefrom and also cleared by the air passageway.

8. In a railway truck, a frame including a transverse transom, an axle driving motor at one side of said transom, a bolster at the other side of said transom and movable relative thereto and including a hollow center plate and a cross bolster spaced therefrom and mounted on said frame, there being an air conduit extending from said hollow center plate over said cross bolster to said motor.

9. In a railway truck, a frame including a. transverse transom, an axle driving motor at one side of said transom, a bolster at the other side of said transom and movable relative thereto and including a hollow center plate, spaced longitudinal arms, a transverse arm at the outer end of said longitudinal arms and mounted on the truck frame, and an air conduit leading from said bolster between said longitudinal arms and upwardly and over said transverse arm to said motor.

10. In a railway truck, a frame including a transom having an element extending from one side of the truck to the other, a lateral motion bolster at one side of said transom provided with a center plate and having an air passageway leading from the center plate, an axle at the other side of said transom. a motor housing carried on said axle and transom, and an air conduit leading from an outlet in said bolster passageway and over said transom element to said motor housing, there being flexible connections at the ends of said conduit, one connection being fixed to said bolster and the other connection being fixed to said housing whereby inclination of said conduit with respect to said bolster and housing resulting from relative movements of said bolster and housing transversely and vertically of the truck is accomodated.

11. In a railway truck, a frame including wheel pieces and. a transverse transom having an element extending between said wheel pieces, swing hangers pivotally suspended from said frame, elongated leaf springs carried. by said swing hangers and extending inwardly of the frame from said wheel pieces, a bolster at on side of said transom and having a longitudinal extension mounted on said springs and movable thereon relative to said hangers and frame and movable with said hangers and springs relative to said frame, said bolster including an air passage,

an axle driving motor at the other side of said transom, and a conduit extending at the level of said springs and over said element and positioned between said springs and the longitudinal center line of the truck and being movable independently of said transom and leading from said bolster air passage to a portion of said motor close to the side of the truck and adjacent to the inner end of one of said bolster springs.

12. In a railway truck, a frame including wheel pieces and spaced transverse transoms, at least one of which has a relatively low element extending between said wheel pieces, swing hangers pivotally suspended from said frame, elongated leaf springs carried by said swing hangers and extending inwardly of the frame from said wheel pieces, a bolster having spaced members extending transversely of the truck and mounted on said springs and movable thereon relative to said hangers and frame and movable with said han ers and springs relative to said frame, at least one of said members being located at one side of said transom element, said bolster having a load supporting portion extending between and carried by said transverse members, said members and portion including an airpassage, an axle driving motor at the other side of said transom element and an air conduit positioned at the level of said springs and inwardly of the truck from the inner end of one of said springs and extending over said element and movable independently of said transom and leading from said air passage to a portion of said motor adjacent to the side of the truck.

WILLIAM H. MEYER.