US3834774A - Center plate bearing - Google Patents

Center plate bearing Download PDF

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Publication number
US3834774A
US3834774A US00374194A US37419473A US3834774A US 3834774 A US3834774 A US 3834774A US 00374194 A US00374194 A US 00374194A US 37419473 A US37419473 A US 37419473A US 3834774 A US3834774 A US 3834774A
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US
United States
Prior art keywords
center plate
recesses
bearing surface
side walls
center
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
Application number
US00374194A
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English (en)
Inventor
D Fiegl
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
Dresser 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 Dresser Industries Inc filed Critical Dresser Industries Inc
Priority to US00374194A priority Critical patent/US3834774A/en
Priority to ZA00743275A priority patent/ZA743275B/xx
Priority to AU69505/74A priority patent/AU478255B2/en
Priority to CA203,468A priority patent/CA1028567A/en
Priority to JP49073765A priority patent/JPS5759105B2/ja
Priority to DE2431296A priority patent/DE2431296C3/de
Priority to GB2859074A priority patent/GB1464017A/en
Application granted granted Critical
Publication of US3834774A publication Critical patent/US3834774A/en
Assigned to FIRST NATIONAL BANK OF CHICAGO, THE reassignment FIRST NATIONAL BANK OF CHICAGO, THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMSTED INDUSTRIES INCORPORATED
Assigned to AMSTED INDUSTRIES, INC., A CORP. OF DE. reassignment AMSTED INDUSTRIES, INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: DRESSER INDUSTRIES, INC., A CORP OF DE.
Assigned to AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE. reassignment AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: FIRST NATIONAL BANK OF CHICAGO, AS AGENT
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
    • F16C17/24—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety
    • 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
    • B61F5/16—Centre bearings or other swivel connections between underframes and bolsters or bogies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/10—Railway vehicles

Definitions

  • a preferred construction has been the combination of a fabricated or cast steel center filler with or without draft lugs, a through bottom cover plate and a separate center plate bolted or welded to the bottom cover plate.
  • This permits easy removal of the center plate when it has become worn or cracked and over the years has been found to provide a center plate life expectancy of about to years.
  • a problem has been in determining when a center plate has worn sufficiently to repair it or justify a replacement.
  • the railraod cars were elevated off the truck bolsters and inspectors went beneath them to measure the amount of wear on each center plate. It would be must less troublesome and safer if an inspector would be able to determine center plate wear visually and exterior to the railroad car underframe.
  • Another object is to prevent the development of a higher level of load concentration, under roll conditions, due to wear on the lower surface of the center plate.
  • a center plate having a base portion and a circular boss projectingdownwardly therefrom.
  • the boss contains a bearing surface spaced from the base, circumferential opposed side walls and circumferential opposed end walls.
  • the circular boss contains a longitudinal recess alongthe side walls between the end walls where the side walls normally join the bearing surface.
  • FIG. 1 is a bottom view and FIG. 2 is an elevation view of one type of center plate incorporating the features of the present invention
  • FIGS. 3 and 4 are partial elevation views of another type of center plate containing different embodiments of the present invention.
  • center plate 10 for a railroad car such as a house boxcar.
  • the boxcar body (not shown) overlies the body bolstercenter sill structure (not shown) and the center plate is mounted on the underside of this bolster-sill structure to support the car body on the car truck.
  • the center plate is an integral member. preferably formed of cast steel, and includes a generally-square. flat base portion 12 formed to define mounting or bolting flanges l4 and 16 along the side edges thereof and having a central circular boss 18 extending from the lower face thereof.
  • a transverse hole 20 extending through the plate centrally of the boss 18 is provided for accom modating a king pin extending upwardly through the truck center plate to maintain vertical alignment of the boss and mating bowl of a truck center plate.
  • the mounting flanges I4 and 16 are defined by mounting faces on the upper face of the center plate which are preferably machined surfaces. Longitudinally spaced bolt holes 22 and 24 are provided in each mounting flange.
  • the center plate then is designed to be bolted to the support flanges of the center sill through the immediate structure: of the body bolster cover plate, with the center plate supporting the assembly at the center sill flanges apart from any auxiliary sill structure.
  • the circular boss 18 has a bearing surface 26 spaced downwardly from and parallel to the base portion. It contains circumferential side walls 28 normally in alignment with the center line of the railroad car and circumferential end walls 30 normally in alignment with the center line of the body bolster of the car. These circumferential walls connect the bearing sur face 26 to the base 12.
  • the bearing surface 26 contains a longitudinal recess 32 along the side walls between the end walls where the side walls normally join the bearing surface.
  • FIGS. 3 and 4 illustrate another type of center plate 34 designed to be welded within a pocket in the center sill. These FIGS. illustrate more clearly the design of the longitudinal recess.
  • the recess 36 is cleftlike wherein the vertical surface 38 thereof meets the horizontal surface 40 and the bearing surface 26, by means of small radii at about a right angle and the horizontal surface 40 meets the side wall 42 of the boss 44 at a similar right angle.
  • the horizontal surface 40 of the recess 36 joins the bearing surface 26 by the medium of a larger radius than shown in FIG. 3, thereby eliminating the vertical wall and the horizontal surface joins with the side wall 42 of the boss 44 at a beveled surface 46. All three configurations provide good line contact for the center plate.
  • a center plate for use with a railroad car body bolster center sill assembly comprising a horizontal base portion, and a circular boss projecting downwardly therefrom; said boss having a bearing surface spaced downwardly from and parallel to said base and vertical side walls which form circumferential side walls normally in alignment with the center line of the railroad car and circumferential end walls normally in alignment with the center line of the body bolster connecting said bearing surface to said base; and bearing surface and vertical side walls containing spaced parallel longitudinal recesses, having a substantial amount of surface parallel to and spaced a designated amount upward from said bearing surface along said side walls between the end walls, the intersection of the recesses and bearing surface forming a bearing line, on the bearing surface, parallel to the center line of the car.
  • a center plate according to claim 2 in which the horizontal surface of the recesses and the side walls of the boss form a common edge that is beveled.
  • a center plate according to claim 2 in which the horizontal surface of the recesses and the side walls of the boss form a common edge that is convex.
  • a center plate according to claim 2 in which the horizontal surfaces of the recesses and the bearing surface of said boss form a common edge through a concave radius.
  • a center plate according to claim 2 in which the horizontal surface of the recesses and the vertical surface of the recesses form a common edge that is con-

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Braking Arrangements (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
US00374194A 1973-06-27 1973-06-27 Center plate bearing Expired - Lifetime US3834774A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US00374194A US3834774A (en) 1973-06-27 1973-06-27 Center plate bearing
ZA00743275A ZA743275B (en) 1973-06-27 1974-05-21 Center plate
AU69505/74A AU478255B2 (en) 1973-06-27 1974-05-29 Center plate
CA203,468A CA1028567A (en) 1973-06-27 1974-06-26 Railway car center plate wear indicator
JP49073765A JPS5759105B2 (OSRAM) 1973-06-27 1974-06-27
DE2431296A DE2431296C3 (de) 1973-06-27 1974-06-27 Mittelplatte für eine Vorrichtung zur Lagerung eines Eisenbahnwagens auf einem Drehgestell
GB2859074A GB1464017A (en) 1973-06-27 1974-06-27 Railroad car body centre plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00374194A US3834774A (en) 1973-06-27 1973-06-27 Center plate bearing

Publications (1)

Publication Number Publication Date
US3834774A true US3834774A (en) 1974-09-10

Family

ID=23475726

Family Applications (1)

Application Number Title Priority Date Filing Date
US00374194A Expired - Lifetime US3834774A (en) 1973-06-27 1973-06-27 Center plate bearing

Country Status (6)

Country Link
US (1) US3834774A (OSRAM)
JP (1) JPS5759105B2 (OSRAM)
CA (1) CA1028567A (OSRAM)
DE (1) DE2431296C3 (OSRAM)
GB (1) GB1464017A (OSRAM)
ZA (1) ZA743275B (OSRAM)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2421769A (en) * 2004-12-30 2006-07-05 Daido Metal Co A plain bearing providing a visual indication of wear
US8869954B2 (en) 2011-04-15 2014-10-28 Standard Car Truck Company Lubricating insert for railroad brake head assembly
US8869709B2 (en) 2011-08-10 2014-10-28 Standard Car Truck Company High friction railroad car components with friction modifying inserts
CN106515776A (zh) * 2016-10-26 2017-03-22 中车长春轨道客车股份有限公司 用于城铁车辆的心盘通用过渡装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2562489B (en) 2017-05-16 2022-06-22 Skf Aerospace France Method of determining wear in a bearing surface

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2258640A (en) * 1938-11-23 1941-10-14 Gen Steel Castings Corp Railway center plate structure
US2655117A (en) * 1949-10-10 1953-10-13 Gen Steel Castings Corp Railway vehicle body and truck central bearing
US3326611A (en) * 1965-12-13 1967-06-20 Pullman Inc Center plate construction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2258640A (en) * 1938-11-23 1941-10-14 Gen Steel Castings Corp Railway center plate structure
US2655117A (en) * 1949-10-10 1953-10-13 Gen Steel Castings Corp Railway vehicle body and truck central bearing
US3326611A (en) * 1965-12-13 1967-06-20 Pullman Inc Center plate construction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2421769A (en) * 2004-12-30 2006-07-05 Daido Metal Co A plain bearing providing a visual indication of wear
GB2421769B (en) * 2004-12-30 2008-05-14 Daido Metal Co Plain bearing
US8869954B2 (en) 2011-04-15 2014-10-28 Standard Car Truck Company Lubricating insert for railroad brake head assembly
US8869709B2 (en) 2011-08-10 2014-10-28 Standard Car Truck Company High friction railroad car components with friction modifying inserts
CN106515776A (zh) * 2016-10-26 2017-03-22 中车长春轨道客车股份有限公司 用于城铁车辆的心盘通用过渡装置

Also Published As

Publication number Publication date
JPS5759105B2 (OSRAM) 1982-12-13
ZA743275B (en) 1975-05-28
AU6950574A (en) 1975-12-04
DE2431296C3 (de) 1980-01-17
CA1028567A (en) 1978-03-28
DE2431296B2 (OSRAM) 1979-05-17
DE2431296A1 (de) 1975-01-23
GB1464017A (en) 1977-02-09
JPS5037120A (OSRAM) 1975-04-07

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Legal Events

Date Code Title Description
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

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, INC., 3700 PRUDENTIAL PLAZA, CH

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:DRESSER INDUSTRIES, INC., A CORP OF DE.;REEL/FRAME:004513/0932

Effective date: 19850911

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

Owner name: AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE., ILLINOIS

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:FIRST NATIONAL BANK OF CHICAGO, AS AGENT;REEL/FRAME:005070/0731

Effective date: 19880831