GB2118504A - Railway bogie - Google Patents

Railway bogie Download PDF

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Publication number
GB2118504A
GB2118504A GB08309812A GB8309812A GB2118504A GB 2118504 A GB2118504 A GB 2118504A GB 08309812 A GB08309812 A GB 08309812A GB 8309812 A GB8309812 A GB 8309812A GB 2118504 A GB2118504 A GB 2118504A
Authority
GB
United Kingdom
Prior art keywords
bolster
gib
side frame
inch
frame column
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.)
Granted
Application number
GB08309812A
Other versions
GB8309812D0 (en
GB2118504B (en
Inventor
James A Henkel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Amsted Industries Inc
Original Assignee
Amsted Industries Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Amsted Industries Inc filed Critical Amsted Industries Inc
Publication of GB8309812D0 publication Critical patent/GB8309812D0/en
Publication of GB2118504A publication Critical patent/GB2118504A/en
Application granted granted Critical
Publication of GB2118504B publication Critical patent/GB2118504B/en
Expired legal-status Critical Current

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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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Rolling Contact Bearings (AREA)
  • Braking Arrangements (AREA)

Abstract

A railway bogie comprises two side frames and a bolster (10) having at each end two sets of inner (16, 24) and outer (18, 26) bolster gibs. Each set of gibs forms a pocket on the bolster to receive a respective side frame column (12, 14). The clearance between the side frame column and the inner bolster gib is equal to or greater than the clearance between the side frame column and the outer bolster gib. The inner clearance may be 1.27 cm and the outer clearance 0.95 cm. <IMAGE>

Description

SPECIFICATION Railway bogies The present invention relates generally to railway bogies, and more particularly to a railway bogie having a bolster received in two side frames wherein inner and outer bolster gibs form pockets to receive the side frame columns.
The presence of such bolster gibs is known from patents such as U.S. Patent No.3,109,387. However, that patent is mainly concerned with side frame stop lugs which limit the horizontal and rotative movement of the bolster within the side frames.
It has been discovered that the side frames in such railway bogies tend to move inward toward each other during service. The reason for such tendency is unknown, but a greater movement is suspected under loaded car conditions. Accordingly, excessive inner bolster gib wear has been experienced with minimal outer gib wear. Of course such gib wear is due to the side frames tendency to move inward toward each other, whereby the inner gibs are contacted by the side frame columns.
An example of such inner bolster gib-side frame column wear was obtained from a heavy duty Association of American Railroads (AAR) standard railway bogie after 480,000 miles of service. The inner bolster gib had worn 0.211 inch (0.536 cm) and the side frame column contacting the inner bolster gib had worn 0.172 inch (0.437 cm). The outer bolster gib showed no wear and the side frame column contacting such outer bolster gib also showed no wear.
The present Association of American Railroads (AAR) standard for heavy duty railway bogies is to provide for an initial, non-worn inner bolster gibside frame column spacing of 1/4 inch (0.63 cm) and an outer bolster gib-side frame column spacing of 5/8 inch (1.58 cm). Such a spacing arrangement has resulted in the excessive inner gib wear discussed above. Such inner bolster gib and contacting side frame column wear is noted to take place mostly in the first one or two years of service of the railway bogie. Afterthis initial wear-in period, little further wear is believed to occur.
Accordingly, it is an object of the present invention to provide a railway bogie which exhibits lessened inner bolster gib wear and improved service life for the bolster and side frames of the bogie.
The present invention provides a railway bogie having a bolster supported in two side frames. The bolster has two sets of inner and outer bolster gibs at either end thereof, such gibs forming a pocket to receive the side frame columns. The clearance between the inner gib and the side frame column is increased from the AAR standard, and the clearance between the inner gib and the side frame column is increased from the AAR standard, and the clearance between the inner and outer gib-side frame column clearances has been found to be where the inner gib-side frame column clearance is equal to or slightly greater than the outer gib-side frame column clearance.
In a preferred arrangement, the present invention provides a railway truck comprising a bolster and two side frames, said bolster including at each end thereof an inner bolster gib and an outer bolster gib, each such gib extending outward from the bolster to form a pocket on the bolster to contact the side frame, the clearance between the inner bolster gib and the side frame being increased from the AAR standard of 1/4 inch to about 1/2 inch, and the clearance between the outer bolster gib and the side frame column being reduced from the AAR standard of 5/8 inch to about 3/8 inch.
The present invention reduces the excessive amount of inner gib wear, while maintaining the total inner and outer gib clearance required by the AAR such that a long service life is obtained before the maximum AAR standard of 1 1/2 inches (3.81 cm) of total clearance between fhe inner and outer gibs and the side frame columns is reached and repair is required.
In the sole Figure of the drawing, a top partial view of a preferred embodiment of a bolster and a side frame forming part of a railway bogie according to the present invention is shown.
In the drawing a partial top view of one side of a bolster 10 is shown. Side frame columns 12 and 14 with respective wear plates 15 and 17 are also shown as nearly abutting the bolster 10.
The end of bolster 10 is shown to have two sets of inner bolster gibs 16 and 24 and outer bolster gibs 18 and 26 which extend transversely outward from the longitudinal axis of bolster 10. Side frame column 12 has a stop lug 20 extending outward from the longitudinal axis of side frame column 12, and side frame column 14 has a stop lug 22 extending outward from the longitudinal axis of side frame column 14.
The space between inner bolster gibs 16 and 25 and side frame columns 12 and 14 is increased from the AAR standard of 1/4 inch to about 1/2 inch (1.27 cm), and the space between outer bolster gibs 18 and 26 and side frame columns 12 and 14 is reduced from the AAR standard of 5/8 inch to about 3/8 inch (0.95 cm). A preferred relation is to have the distance between the inner bolster gib and the side frame column equal to or greater than the distance between the outer bolster gib and the side frame column.
1. A railway bogie comprising a bolster and two side frames, each end of the bolster being adapted to be received in an opening in one of the side frames, each end of the bolster including at least one inner bolster gib and at least one outer bolster gib extending transversely outward from the longitudinal axis of the bolster, the inner and outer bolster gibs forming at least one pocket to receive at least one column of one of said side frames, the clearance between the or each inner bolster gib and the respective side frame column being equal to or greater than the distance between the or each outer bolster gib and the respective side frame column.
2. A railway bogie comprising a bolster and two side frames, said bolster being supported within said
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Railway bogies The present invention relates generally to railway bogies, and more particularly to a railway bogie having a bolster received in two side frames wherein inner and outer bolster gibs form pockets to receive the side frame columns. The presence of such bolster gibs is known from patents such as U.S. Patent No.3,109,387. However, that patent is mainly concerned with side frame stop lugs which limit the horizontal and rotative movement of the bolster within the side frames. It has been discovered that the side frames in such railway bogies tend to move inward toward each other during service. The reason for such tendency is unknown, but a greater movement is suspected under loaded car conditions. Accordingly, excessive inner bolster gib wear has been experienced with minimal outer gib wear. Of course such gib wear is due to the side frames tendency to move inward toward each other, whereby the inner gibs are contacted by the side frame columns. An example of such inner bolster gib-side frame column wear was obtained from a heavy duty Association of American Railroads (AAR) standard railway bogie after 480,000 miles of service. The inner bolster gib had worn 0.211 inch (0.536 cm) and the side frame column contacting the inner bolster gib had worn 0.172 inch (0.437 cm). The outer bolster gib showed no wear and the side frame column contacting such outer bolster gib also showed no wear. The present Association of American Railroads (AAR) standard for heavy duty railway bogies is to provide for an initial, non-worn inner bolster gibside frame column spacing of 1/4 inch (0.63 cm) and an outer bolster gib-side frame column spacing of 5/8 inch (1.58 cm). Such a spacing arrangement has resulted in the excessive inner gib wear discussed above. Such inner bolster gib and contacting side frame column wear is noted to take place mostly in the first one or two years of service of the railway bogie. Afterthis initial wear-in period, little further wear is believed to occur. Accordingly, it is an object of the present invention to provide a railway bogie which exhibits lessened inner bolster gib wear and improved service life for the bolster and side frames of the bogie. The present invention provides a railway bogie having a bolster supported in two side frames. The bolster has two sets of inner and outer bolster gibs at either end thereof, such gibs forming a pocket to receive the side frame columns. The clearance between the inner gib and the side frame column is increased from the AAR standard, and the clearance between the inner gib and the side frame column is increased from the AAR standard, and the clearance between the inner and outer gib-side frame column clearances has been found to be where the inner gib-side frame column clearance is equal to or slightly greater than the outer gib-side frame column clearance. In a preferred arrangement, the present invention provides a railway truck comprising a bolster and two side frames, said bolster including at each end thereof an inner bolster gib and an outer bolster gib, each such gib extending outward from the bolster to form a pocket on the bolster to contact the side frame, the clearance between the inner bolster gib and the side frame being increased from the AAR standard of 1/4 inch to about 1/2 inch, and the clearance between the outer bolster gib and the side frame column being reduced from the AAR standard of 5/8 inch to about 3/8 inch. The present invention reduces the excessive amount of inner gib wear, while maintaining the total inner and outer gib clearance required by the AAR such that a long service life is obtained before the maximum AAR standard of 1 1/2 inches (3.81 cm) of total clearance between fhe inner and outer gibs and the side frame columns is reached and repair is required. In the sole Figure of the drawing, a top partial view of a preferred embodiment of a bolster and a side frame forming part of a railway bogie according to the present invention is shown. In the drawing a partial top view of one side of a bolster 10 is shown. Side frame columns 12 and 14 with respective wear plates 15 and 17 are also shown as nearly abutting the bolster 10. The end of bolster 10 is shown to have two sets of inner bolster gibs 16 and 24 and outer bolster gibs 18 and 26 which extend transversely outward from the longitudinal axis of bolster 10. Side frame column 12 has a stop lug 20 extending outward from the longitudinal axis of side frame column 12, and side frame column 14 has a stop lug 22 extending outward from the longitudinal axis of side frame column 14. The space between inner bolster gibs 16 and 25 and side frame columns 12 and 14 is increased from the AAR standard of 1/4 inch to about 1/2 inch (1.27 cm), and the space between outer bolster gibs 18 and 26 and side frame columns 12 and 14 is reduced from the AAR standard of 5/8 inch to about 3/8 inch (0.95 cm). A preferred relation is to have the distance between the inner bolster gib and the side frame column equal to or greater than the distance between the outer bolster gib and the side frame column. CLAIMS
1. A railway bogie comprising a bolster and two side frames, each end of the bolster being adapted to be received in an opening in one of the side frames, each end of the bolster including at least one inner bolster gib and at least one outer bolster gib extending transversely outward from the longitudinal axis of the bolster, the inner and outer bolster gibs forming at least one pocket to receive at least one column of one of said side frames, the clearance between the or each inner bolster gib and the respective side frame column being equal to or greater than the distance between the or each outer bolster gib and the respective side frame column.
2. A railway bogie comprising a bolster and two side frames, said bolster being supported within said side frames, said bolster including at each end thereof an inner bolster gib and an outer bolster gib, each gib extending outward from the bolster to form a pocket on the bolster to receive the side frame, the clearance between the inner bolster gib and the side frame being greater than 1/4 inch (0.64 cm), and the clearance between the outer bolster gib and the side frame being less than 5/8 inch (1.59 cm).
3. A railway bogie as claimed in claim 2, wherein the clearance between the inner bolster gib and the side frame is about 1/2 inch (1.27 cm) and the clearance between the outer bolster gib and the side frame is about 3/8 inch (0.95 cm).
4. A railway bogie as claimed in claim 2 or 3, wherein each bolster end includes two inner and two outer bolster gibs, each gib extending outwardly from the longitudinal axis of the bolster.
5. A railway bogie as claimed in claim 4, wherein the side frame includes two columns, each of which is received in a bolster gib pocket.
6. A railway bogie comprising a bolster and two side frames substantially as herein described with reference to the accompanying drawing.
GB08309812A 1982-04-12 1983-04-12 Railway bogie Expired GB2118504B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US36728282A 1982-04-12 1982-04-12

Publications (3)

Publication Number Publication Date
GB8309812D0 GB8309812D0 (en) 1983-05-18
GB2118504A true GB2118504A (en) 1983-11-02
GB2118504B GB2118504B (en) 1986-01-22

Family

ID=23446558

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08309812A Expired GB2118504B (en) 1982-04-12 1983-04-12 Railway bogie

Country Status (13)

Country Link
JP (1) JPS58180370A (en)
KR (1) KR840004387A (en)
AR (1) AR230401A1 (en)
AU (1) AU557556B2 (en)
BE (1) BE896426A (en)
BR (1) BR8301807A (en)
CA (1) CA1213472A (en)
ES (1) ES279894Y (en)
GB (1) GB2118504B (en)
MX (1) MX162550A (en)
PT (1) PT76512B (en)
ZA (1) ZA832511B (en)
ZW (1) ZW8283A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2088049A3 (en) * 2008-02-06 2012-08-01 VÚKV a.s. Device for connecting the bogie of a railway vehicle to the bolster or to the vehicle underframe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB822456A (en) * 1958-03-17 1959-10-28 American Steel Foundries Improvements in or relating to a railway car truck
GB838273A (en) * 1958-09-01 1960-06-22 American Steel Foundries Improvements in railway car trucks
GB1073122A (en) * 1964-06-17 1967-06-21 Midland Ross Corp Bogies for rail vehicles
GB2045188A (en) * 1979-04-11 1980-10-29 Railrod Dynamics Inc Freight car truck assembly
US4357880A (en) * 1980-08-25 1982-11-09 Midland-Ross Corporation Bolster for a railroad car truck

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB822456A (en) * 1958-03-17 1959-10-28 American Steel Foundries Improvements in or relating to a railway car truck
GB838273A (en) * 1958-09-01 1960-06-22 American Steel Foundries Improvements in railway car trucks
GB1073122A (en) * 1964-06-17 1967-06-21 Midland Ross Corp Bogies for rail vehicles
GB2045188A (en) * 1979-04-11 1980-10-29 Railrod Dynamics Inc Freight car truck assembly
US4357880A (en) * 1980-08-25 1982-11-09 Midland-Ross Corporation Bolster for a railroad car truck

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2088049A3 (en) * 2008-02-06 2012-08-01 VÚKV a.s. Device for connecting the bogie of a railway vehicle to the bolster or to the vehicle underframe

Also Published As

Publication number Publication date
JPS58180370A (en) 1983-10-21
PT76512A (en) 1983-05-01
ZA832511B (en) 1983-12-28
CA1213472A (en) 1986-11-04
AU557556B2 (en) 1986-12-24
KR840004387A (en) 1984-10-15
GB8309812D0 (en) 1983-05-18
ES279894Y (en) 1986-01-16
GB2118504B (en) 1986-01-22
ES279894U (en) 1985-06-01
AR230401A1 (en) 1984-04-30
BE896426A (en) 1983-10-11
AU1340683A (en) 1983-10-20
ZW8283A1 (en) 1983-10-12
MX162550A (en) 1991-05-20
BR8301807A (en) 1983-12-20
PT76512B (en) 1986-01-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19980412