US3837293A - Railway truck bolster and side frame - Google Patents
Railway truck bolster and side frame Download PDFInfo
- Publication number
- US3837293A US3837293A US00296876A US29687672A US3837293A US 3837293 A US3837293 A US 3837293A US 00296876 A US00296876 A US 00296876A US 29687672 A US29687672 A US 29687672A US 3837293 A US3837293 A US 3837293A
- Authority
- US
- United States
- Prior art keywords
- bolster
- columns
- channel
- side frame
- defining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/04—Bolster supports or mountings
- B61F5/06—Bolster supports or mountings incorporating metal springs
Definitions
- This invention relates to railway vehicles and more particularly to improvements in cast steel truck bolsters and side frames.
- an object of this invention is to provide an improved railway truck with considerably improved strength qualities that is capable of withstanding severe dynamic service loading while at the same time providing improved ride characteristics over a continuous range of car loads.
- FIG. 1 is a fragmentary perspective view of a freight car truck embodying a preferred form of the invention, the view'being taken from one outboard end of the bolster;
- FIG. 2 is a partial sectional view taken in the transverse vertical plane indicated by the line 2-2 of FIG.
- FIG. 3 is an outboard side elevational view of a railway car truck side frame
- FIG. 4 represents a top plan view of a portion of the compression member of the side frame shown in FIG. 3;
- FIG. 5 is a further fragmentary sectional view taken in the vertical transverse plane indicated by the line 55 of FIG. 3 which passes through the compression member of the side frame;
- FIG. 6 is a side elevation of one end of the bolster
- FIG. 7 is a top plan view showing one end of the bolster structure
- FIG. 8 is a top plan view representing another embodiment of the compression member of the side frame
- FIG. 9 is a sectional view taken in the vertical transverse plane indicated by the line 9-9 of FIG. 8 which passes through the compression member of the side frame;
- FIG. 10 is an exploded perspective view of the truck bolster, friction shoes and control springs showing more clearly the improved construction.
- FIG. I which illustrates a portion of a truss type railway truck
- the side frame indicated generally at 10 is seen to comprise a tension member 12 and a compression member 14 interconnected by spaced vertical colums 16, the sides of which form a window 18 (FIGS. 1 and 3) substantially rectangular in shape.
- the side frame 10 is supported in the usual manner by wheel and axle assemblies 19, a portion of which can be seen in FIG. 1.
- railway truck for the purpose of the present disclosure may be considered identical at both sides thereof, and for the sake of brevity only that portion shown will be described in detail.
- the window 18 is adapted to receive the end of the bolster, generally indicated at 20.
- the lower surface 22 at the end of the bolster 20 is supported by a plurality of support spring groups 24 which rest at their lower ends on the side frame tension member 12.
- a plurality of support spring groups 24 which rest at their lower ends on the side frame tension member 12.
- opposite side walls 26 at each end of the bolster 20 are wedgeshaped receiving pockets 28 which open outwardly toward the side frame columns 16 and have an inclined inner wall or sloped surface 30 which has a width corresponding substantially to the width of the wedgeshaped friction shoe 32 positioned therein.
- the inclined inner wall 30 (FIG. 10) that projects from each pocket above the top wall 34 of the bolster 20 is connected by an integrally cast hood or stiffener 35 which extends across the width of the top wall 34.
- the improved construction of the bolster 20 greatly increases the strength of the inclined or sloped surface 30 in the bolster pocket 28.
- This U-shaped stiffener 35 provides direct support between opposing sloped surfaces 30 and eliminates any tendency for the sloped surfaces to break off and pivot toward each other around the line of intersection formed by the bolster top wall 34 and the sloped surfaces 30.
- One wedge-shaped friction shoe 32 is operatively carried in each pocket 28 and defines an inclined surface 36 corresponding to and frictionally engaging the inclined wall or sloped surface 30 of the pocket 28.
- the lower surface 41 of the wedge-shaped friction shoe 32 is engaged by the upper end of a control spring 38 which is disposed between said friction shoe 32 and the tension member 12 of the side frame 10.
- the inclined inner wall 30 therefore provides an inclined thrust area equal to, that of the engaged portion of the inclined surface 36 of the wedge-shaped friction shoe 32.
- the improved compression member 14 is downwardly opening U-shaped channel 40, as best seen in FIG. 5, devoid of tie straps and open on the underside thereof, said opening being defined by parallel bifurcated side portions 42 that extend along the underside of the compression member intermediate the vertical columns 16 of the side frame 10.
- a flange 44 Formed on each of the bifurcated side portions 42 is a flange 44 having external extensions 46.
- the flange 44 has greater thickness than either of the side portions 42 of the top wall 48 of the U-shaped channel 40.
- the thickness and shape of the flange 44 are determined by the load necessary to produce crippling of the compression member; the greater the load the thicker the flange 44. However, it is important to maintain adequate spacing between the flanges 44 to insure the unimpeded motion of the bolster stiffener 35 therebetween.
- Such as arrangement of bolster 20 and side frame allows for the maximum projection of the sloped surfaces 30 which enables the friction shoe 32 to be positioned higher in the pocket 28 of the bolster 20.
- the abovementioned arrangement enables the entire raised portion of the bolster stiffener 35 to be received in a complementary opening in the side frame 10 compression member 14, thereby allowing maximum elevation of the bolster in the side frame opening 18 which is required for insertion of long travel spring groups 24 with the minimum side frame opening 18.
- Maximum projection of the sloped surfaces 30 is also provided, thereby enabling each friction shoe 32 to be positioned higher in the bolster pockets 28 which in turn substantially increases the length of the control springs 38 associated with each of the friction shoes 32.
- both the support springs 24 and control springs 38 results in a softer load rate for the springs; which insures increased reserve capacity without approaching the stress limitations of the springs.
- Increased spring length also means greater reserve spring travel which reduces the danger of damage to the springs and cargo by more effectively resisting a solid condition of the springs.
- FIGS. 8 and 9 illustrate another embodiment of the invention wherein the compression member 14 of the side frame 10 is flared in the mid portion. That portion of the compression member 14 between the vertical columns is a flared U-shaped channel 50 opening downwardly.
- the flared U-shaped channel 50 has a top wall 52 and bifurcated side portions 54 all having substantially the same thickness. Extending from each of the side portions 54 intermediate the spaced vertical columns 16 are flanges 56.
- the flanges 56 have an external extension 58 extending the full length of the side portions 54.
- the flanges 56 in the mid portion of the suject to the maximum deflection.
- the distance between the two internal extensions 60 is greater than the width of the stiffener 35 on the bolster 20, thereby allowing the stiffener 35 to move freely inside the flared U-shaped channel 50 of compression member 14.
- the internal extension 60 of the flange 56 blends into the side portion 54 near the ends of the flared U-shaped channel 50.
- a railway truck side frame comprising a horizontally disposed compression and tension members connected by a pair of spaced vertical columns defining an opening therebetween, said compression member defining a downwardly opening channel intermediate said spaced columns, said channel having downwardly depending legs along the edges thereof forming a generally downwardly opening U-shaped cross-section, the mid-portion of said channel being flared outwardly from said spaced columns so that said U-shaped channel has a greater width in its mid-portion than the end portions at said columns, and a flange extending along the lower extremity of each of said legs.
- a side frame having compression and tension members connected by a pair of spaced columns and defining an opening therebetween, said compression member being bifurcated and having downwardly depending side portions on the underside thereof defining a downwardly opening channel intermediate said columns, said side portions being relatively closely spaced from each other at the extremities of said channel adjacent said columns, and said side portions being relatively widely spaced from each other at the mid-portion of said channel; and a bolster supported by said side frame intermediate said columns and having upper and lower walls connected by spaced side walls, said bolster defining friction shoe receiving pockets on opposite sides thereof and stiffening means extending across said upper wall and engaging said pockets, said stiffening means being receivable by said channel.
- a side frame having upper and lower members spanning a pair of spaced columns defining a window, said upper member defining a downwardly opening channel wider at its mid-portion that at its extremities at said columns, a bolster supported by said side frame intermediate said members, said bolster defining friction shoe receiving pockets on opposite sides thereof, and stiffening means extending across said bolster and engaging said pockets above its upper wall, said stiffening means being receivable in said channel.
Abstract
Description
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00296876A US3837293A (en) | 1972-10-12 | 1972-10-12 | Railway truck bolster and side frame |
CA168,680A CA984224A (en) | 1972-10-12 | 1973-04-13 | Railway truck bolster and side frame construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00296876A US3837293A (en) | 1972-10-12 | 1972-10-12 | Railway truck bolster and side frame |
Publications (1)
Publication Number | Publication Date |
---|---|
US3837293A true US3837293A (en) | 1974-09-24 |
Family
ID=23143941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00296876A Expired - Lifetime US3837293A (en) | 1972-10-12 | 1972-10-12 | Railway truck bolster and side frame |
Country Status (2)
Country | Link |
---|---|
US (1) | US3837293A (en) |
CA (1) | CA984224A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4003318A (en) * | 1975-06-25 | 1977-01-18 | Standard Car Truck Company | Reinforced bolster pocket wall |
US5305694A (en) * | 1993-06-17 | 1994-04-26 | Amsted Industries Incorporated | Sideframe with increased fatigue life having longer cross-sectional thickness transition zone |
US9216450B2 (en) | 2011-05-17 | 2015-12-22 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
US9233416B2 (en) | 2011-05-17 | 2016-01-12 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
US9346098B2 (en) | 2011-05-17 | 2016-05-24 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
US10358151B2 (en) | 2013-12-30 | 2019-07-23 | Nevis Industries Llc | Railcar truck roller bearing adapter-pad systems |
US10562547B2 (en) | 2013-12-30 | 2020-02-18 | Nevis Industries Llc | Railcar truck roller bearing adapter pad systems |
US10752265B2 (en) | 2013-12-30 | 2020-08-25 | Nevis Industries Llc | Railcar truck roller bearing adapter pad systems |
US11479276B2 (en) * | 2018-05-24 | 2022-10-25 | Transportation Ip Holdings, Llc | Railroad car truck side frame |
US11565728B2 (en) | 2013-12-30 | 2023-01-31 | Nevis Industries Llc | Railcar truck roller bearing adapter-pad systems |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20723A (en) * | 1858-06-29 | Bedstead | ||
US2652002A (en) * | 1949-10-11 | 1953-09-15 | American Steel Foundries | Snubbed truck |
US2723630A (en) * | 1950-02-08 | 1955-11-15 | Buckeye Steel Castings Co | Damping device for railway car trucks |
US2805630A (en) * | 1952-01-07 | 1957-09-10 | Symington Gould Corp | Quick wheel change truck |
US2974610A (en) * | 1958-10-23 | 1961-03-14 | American Steel Foundries | Snubbed bolster truck |
-
1972
- 1972-10-12 US US00296876A patent/US3837293A/en not_active Expired - Lifetime
-
1973
- 1973-04-13 CA CA168,680A patent/CA984224A/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20723A (en) * | 1858-06-29 | Bedstead | ||
US2652002A (en) * | 1949-10-11 | 1953-09-15 | American Steel Foundries | Snubbed truck |
US2723630A (en) * | 1950-02-08 | 1955-11-15 | Buckeye Steel Castings Co | Damping device for railway car trucks |
US2805630A (en) * | 1952-01-07 | 1957-09-10 | Symington Gould Corp | Quick wheel change truck |
US2974610A (en) * | 1958-10-23 | 1961-03-14 | American Steel Foundries | Snubbed bolster truck |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4003318A (en) * | 1975-06-25 | 1977-01-18 | Standard Car Truck Company | Reinforced bolster pocket wall |
US5305694A (en) * | 1993-06-17 | 1994-04-26 | Amsted Industries Incorporated | Sideframe with increased fatigue life having longer cross-sectional thickness transition zone |
US9216450B2 (en) | 2011-05-17 | 2015-12-22 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
US9233416B2 (en) | 2011-05-17 | 2016-01-12 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
US9346098B2 (en) | 2011-05-17 | 2016-05-24 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
US10112629B2 (en) | 2011-05-17 | 2018-10-30 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
US10350677B2 (en) | 2011-05-17 | 2019-07-16 | Nevis Industries Llc | Side frame and bolster for a railway truck and method for manufacturing same |
US10358151B2 (en) | 2013-12-30 | 2019-07-23 | Nevis Industries Llc | Railcar truck roller bearing adapter-pad systems |
US10562547B2 (en) | 2013-12-30 | 2020-02-18 | Nevis Industries Llc | Railcar truck roller bearing adapter pad systems |
US10752265B2 (en) | 2013-12-30 | 2020-08-25 | Nevis Industries Llc | Railcar truck roller bearing adapter pad systems |
US11565728B2 (en) | 2013-12-30 | 2023-01-31 | Nevis Industries Llc | Railcar truck roller bearing adapter-pad systems |
US11479276B2 (en) * | 2018-05-24 | 2022-10-25 | Transportation Ip Holdings, Llc | Railroad car truck side frame |
Also Published As
Publication number | Publication date |
---|---|
CA984224A (en) | 1976-02-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NATIONAL WESTMINSTER BANK USA, A NATIONAL BANKING Free format text: SECURITY INTEREST;ASSIGNOR:ACF INDUSTRIES, INCORPORATED;REEL/FRAME:004307/0396 |
|
AS | Assignment |
Owner name: ACF INDUSTRIES, INCORPORATED, 750 THIRD AVENUE, NE Free format text: RECONVEYS ALL LETTERS PATENTS BACK TO BORROWER RECITED IN REEL 4307FRAMES 396 AND 397 RECORED OCT. 2, 1984 (LOAN HAS BEEN PAID IN FULL);ASSIGNOR:NATIONAL WESTMINSTER BANK USA, AS AGENT;REEL/FRAME:004365/0266 Effective date: 19841220 |
|
AS | Assignment |
Owner name: FIRST NATIONAL BANK OF CHICAGO, THE, ONE FIRST NAT Free format text: SECURITY INTEREST;ASSIGNOR:AMSTED INDUSTRIES INCORPORATED;REEL/FRAME:004666/0778 Effective date: 19860227 Owner name: FIRST NATIONAL BANK OF CHICAGO, THE,ILLINOIS Free format text: SECURITY INTEREST;ASSIGNOR:AMSTED INDUSTRIES INCORPORATED;REEL/FRAME:004666/0778 Effective date: 19860227 |
|
AS | Assignment |
Owner name: AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE., IL Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:FIRST NATIONAL BANK OF CHICAGO, AS AGENT;REEL/FRAME:005070/0731 Effective date: 19880831 |