US20070169663A1 - Sideframe pedestal - Google Patents

Sideframe pedestal Download PDF

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Publication number
US20070169663A1
US20070169663A1 US11/335,811 US33581106A US2007169663A1 US 20070169663 A1 US20070169663 A1 US 20070169663A1 US 33581106 A US33581106 A US 33581106A US 2007169663 A1 US2007169663 A1 US 2007169663A1
Authority
US
United States
Prior art keywords
pedestal
freight car
bearing
pedestal roof
sideframe
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.)
Abandoned
Application number
US11/335,811
Other languages
English (en)
Inventor
Thomas Berg
James Myers
Kurt Fisher
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 Rail Co Inc
Original Assignee
ASF Keystone 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 ASF Keystone Inc filed Critical ASF Keystone Inc
Priority to US11/335,811 priority Critical patent/US20070169663A1/en
Assigned to ASF KEYSTONE, INC. reassignment ASF KEYSTONE, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FISHER, KURT, MYERS, JAMES, BERG, THOMAS R.
Assigned to CITIICORP NORTH AMERICA, INC. reassignment CITIICORP NORTH AMERICA, INC. AMENDED AND RESTATED INTELLECTUAL PROPERTY SECURITY AGREEMENT DATED APRIL 6, 2006 Assignors: ABC RAIL PRODUCTS CHINA INVESTMENT CORPORATION, AMCONSTRUCT CORPORATION, AMRAIL CORPORATION, AMSTED INDUSTRIES INCORPORATED, AMVEHICLE CORPORATION, ASF-KEYSTONE MEXICO HOLDING CORP., ASF-KEYSTONE, INC., BALTIMORE AIRCOIL COMPANY, INC., BRENCO, INCORPORATED, BURGESS-NORTON MFG. CO., INC., CALERA ACQUISITION CO., CONSOLIDATED METCO, INC., DIAMOND CHAIN COMPANY, GRIFFIN PIPE PRODUCTS CO., INC., GRIFFIN WHEEL COMPANY, INC., MEANS INDUSTRIES, INC., MERIDIAN RAIL CHINA INVESTMENT CORP., TRANSFORM AUTOMOTIVE LLC, UNITED RAIL ANCHOR COMPANY, INC., VARLEN CORPORATION
Priority to MX2007000720A priority patent/MX2007000720A/es
Priority to CA2574323A priority patent/CA2574323C/en
Priority to RU2007102027/11A priority patent/RU2337846C1/ru
Priority to AU2007200223A priority patent/AU2007200223B2/en
Priority to SE0700110A priority patent/SE531641C2/sv
Priority to ZA200700556A priority patent/ZA200700556B/en
Priority to BRPI0700065A priority patent/BRPI0700065B1/pt
Priority to CN2007100860578A priority patent/CN101011972B/zh
Priority to UAA200700553A priority patent/UA93983C2/ru
Publication of US20070169663A1 publication Critical patent/US20070169663A1/en
Assigned to AMSTED RAIL COMPANY, INC. reassignment AMSTED RAIL COMPANY, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ASF-KEYSTONE, INC., BRENCO, INC., GRIFFIN WHEEL COMPANY, UNIT RAIL ANCHOR COMPANY
Assigned to BANK OF AMERICA, N.A., AS THE SUCCESSOR COLLATERAL AGENT reassignment BANK OF AMERICA, N.A., AS THE SUCCESSOR COLLATERAL AGENT INTELLECTUAL PROPERTY SECURITY INTEREST ASSIGNMENT AGREEMENT Assignors: CITICORP NORTH AMERICA, INC., AS THE RESIGNING COLLATERAL AGENT (AS SUCCESSOR IN INTEREST OF CITICORP USA, INC.)
Assigned to WELLS FARGO BANK, NATIONAL ASSOCIATION, AS SUCCESSOR AGENT reassignment WELLS FARGO BANK, NATIONAL ASSOCIATION, AS SUCCESSOR AGENT NOTICE OF SUCCESSOR AGENT AND ASSIGNMENT OF SECURITY INTEREST AT REEL/FRAME 023471/0036 Assignors: BANK OF AMERICA, N.A., AS THE RESIGNING AGENT
Abandoned 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
    • B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
    • 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
    • B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
    • B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
    • B61F5/36—Arrangements for equalising or adjusting the load on wheels or springs, e.g. yokes

Definitions

  • the present invention relates to railway freight car trucks and, more particularly, to a freight car truck sideframe and the interface between the freight car truck sideframe and a bearing assembly.
  • Freight car truck sideframes are known that have a sideframe pedestal design which is flat and in a horizontal plane or having 15 inches of maximum radius along the longitudinal edges starting a specified distance from the center line.
  • the 15 inches of maximum radius option is shown in Association of American Railroads (AAR) standard S-325-94, “Limiting Dimensions for AAR Alternate Standard Pedestal Type Sideframes.”
  • the flat horizontal roof of such known designs do not compensate for a deflection of the bolster and axle that occurs under loaded car conditions. With increasing axle loads commonly used in service, this deflection has increased. The combination of increased axle load and increased deflection has caused additional load to be concentrated on the bearing assembly, for example the inner race of the roller bearing elements that is part of the bearing assembly, located at the end of the axle.
  • a bearing assembly is a roller bearing and the load would concentrate on the inner race of the roller bearing elements. This increased load concentration reduces the life of the bearing assembly.
  • Another embodiment of the present invention has a bearing assembly including a bearing adapter.
  • One embodiment of the present invention provides an angled non horizontal surface in a sideframe pedestal roof.
  • the angle in one embodiment of the present invention is about the longitudinal axis of the sideframe.
  • the angle is specifically selected to compensate for the deflection in the bolster and axle structure when a car is loaded and disperses the load about a length on the bearing assembly to reduce the load concentration on the bearing assembly.
  • Another embodiment of the present invention provides an angled non horizontal surface in a bearing adapter.
  • the angle in the bearing adapter is about the longitudinal axis of the sideframe pedestal roof. The angle is specifically selected to compensate for the deflection in the bolster and axle structure when a car is loaded and disperses the load about a length on the bearing assembly to reduce the load concentration on the bearing assembly.
  • FIG. 1 is a perspective view of a railway truck showing a sideframe pedestal according to one embodiment of the present invention
  • FIG. 2 is a side cross sectional detailed view of a bearing assembly, axle and sideframe in an unloaded condition, according to an embodiment of the present invention
  • FIG. 3 is a side cross sectional view of a prior art bearing assembly, axle and sideframe in an unloaded condition
  • FIG. 4 is a side cross sectional view of a prior art bearing assembly, wheel set and sideframe in a loaded condition
  • FIG. 5 is a side cross sectional view of a bearing assembly, axle and sideframe in an unloaded condition, according to an embodiment of the present invention
  • FIG. 6 is a side cross sectional view of a bearing assembly, axle and sideframe in a loaded condition, according to an embodiment of the present invention
  • FIG. 7 is a side cross sectional view of a bearing assembly, axle, and sideframe in an unloaded condition, according to a second embodiment of the present invention.
  • FIG. 8 is a side cross sectional view of a bearing assembly, axle and sideframe in a loaded condition, according to a second embodiment of the present invention.
  • a railway vehicle truck 10 having a sideframe pedestal 11 .
  • Railway truck 10 has a first sideframe 12 and a second identical sideframe 12 laterally spaced and disposed in a generally parallel relationship to truck longitudinal axis L.
  • Each sideframe 12 has an inboard face 13 and an outboard face 14 .
  • Sideframes 12 are mounted in pairs on a pair of spaced wheelsets 4 .
  • One wheelset 4 includes an axle 16 , mounted wheels 18 and bearing assemblies 25 .
  • An axle 16 has a first axle end 15 and a second axle end 17 .
  • Bearing assemblies 25 are mounted at the first axle end 15 and second axle end 17 .
  • Each sideframe 12 has a pedestal jaw 50 at each end and a bolster opening 23 at the sideframe midsection.
  • a bolster 20 extends between each of the sideframe bolster openings 23 and is supported by springs 22 .
  • Bolster 20 may be connected to a railcar underside at a centrally-located center plate 21 .
  • bearing assembly 125 is held on axle end 117 by backing ring 125 A and by axle end cap 125 B.
  • Bearing assembly 125 has a roller type bearing 125 c with outer race 126 and inner race 124 .
  • the inner race 124 is pressed onto axle end 117 and rotates with the axle end 117 .
  • Bearing adapter 170 contacts outer race 126 .
  • Pedestal roof 111 contacts bearing adapter 170 , in some applications there may not be a bearing adapter 170 and the pedestal roof may be in direct contact with the outer race 126 .
  • FIG. 3 a prior art design is shown.
  • side frame 50 bearing assembly 25 bearing adapter 70 , and pedestal roof 11 are shown under a no load condition.
  • Pedestal roof 11 is generally horizontal, and under the no load condition the load is evenly distributed.
  • loading in bearing assembly 25 in an unloaded condition is quite insignificant, with only the weight of the unloaded freight car, typically from 40,000 to 60,000 pounds, distributed over four locations on two freight car trucks. Under load, 200,000 to 250,000 additional pounds of loading is added, one half to each truck.
  • side frame 50 , bearing assembly 25 , bearing adapter 70 , and pedestal roof 11 are shown under load.
  • a deflection angle a of from 0-5 degrees is produced from the loaded condition, with the load concentrated the inner portion of bearing outer race 26 causing unnecessary stress on bearing assembly 25 .
  • pedestal roof 111 bearing assembly 125 , and adapter 170 , are shown with axle 117 and wheels 118 and sideframe 112 and bolster 120 under no load.
  • Pedestal roof 111 has a deflection compensator angle b cut into pedestal roof 111 .
  • the deflection compensator angle b of from 0 to 5 degrees, is shaped to evenly distribute the load over a bearing adapter 170 , bearing assembly 125 , under loaded conditions.
  • pedestal roof 111 , bearing assembly 125 and adapter 170 are shown under a loaded condition.
  • Axle 117 is bowed due to the loading received at the ends through bearings 125 , bearing adapter 170 and sideframes 112 .
  • Bolster 120 is also bowed, resulting in an outward rotation of side frame 112 .
  • pedestal roof 111 has a deflection compensator angle b cut into pedestal roof 111 , the load is evenly distributed from pedestal roof 111 to bearing adapter 170 to bearing assembly 125 .
  • FIG. 7 another embodiment of the present invention is shown.
  • Pedestal roof 211 , bearing assembly 225 , and bearing adapter 270 are shown, along with sideframe 212 , axle 217 and wheels 218 and bolster 220 .
  • Bearing adapter 270 has a deflection compensator angle c cut into it.
  • the deflection compensator angle is between 0 and 5 degrees. Such angle is shaped to evenly distribute load over bearing adapter 270 , and bearing assembly 225 under loaded conditions.
  • FIG. 8 the embodiment of FIG. 7 is shown under a loaded condition.
  • Pedestal roof 211 , bearing assembly 225 and adapter 270 are present.
  • Axle 217 is bowed due to the loading received at its ends through bearings 225 , bearing adapter 270 , and sideframe 212 .
  • Side frame 220 is also rotated outward due to bowing of bolster 120 under load.
  • bearing adapter 270 has a deflector compensator angle c cut into it
  • pedestal roof 211 has its load evenly distributed from pedestal roof 211 , through bearing adapter 270 to bearing assembly 225 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Body Structure For Vehicles (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Handcart (AREA)
US11/335,811 2006-01-20 2006-01-20 Sideframe pedestal Abandoned US20070169663A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US11/335,811 US20070169663A1 (en) 2006-01-20 2006-01-20 Sideframe pedestal
MX2007000720A MX2007000720A (es) 2006-01-20 2007-01-18 Pedestal de larguero.
CA2574323A CA2574323C (en) 2006-01-20 2007-01-18 Sideframe pedestal
UAA200700553A UA93983C2 (ru) 2006-01-20 2007-01-19 Способ компенсации прогибания оси тележки железнодорожного вагона и способ уменьшения концентрации нагрузки ha поверхность kohtakta между боковиной и осью и тележка грузового вагона (варианты)
CN2007100860578A CN101011972B (zh) 2006-01-20 2007-01-19 具有侧架轴箱的铁路货车
SE0700110A SE531641C2 (sv) 2006-01-20 2007-01-19 Anordning och förfarande för kompensering av avböjning i en hjulaxel
AU2007200223A AU2007200223B2 (en) 2006-01-20 2007-01-19 Sideframe pedestal
RU2007102027/11A RU2337846C1 (ru) 2006-01-20 2007-01-19 Боковина тележки грузового вагона
ZA200700556A ZA200700556B (en) 2006-01-20 2007-01-19 Sideframe pedestal
BRPI0700065A BRPI0700065B1 (pt) 2006-01-20 2007-01-19 métodos de compensar deflexão em um eixo de um truque de vagão de carga, e de reduzir uma concentração de carga em uma interface entre um marco lateral e um eixo em um truque de vagão de carga, e truque de vagão de carga

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/335,811 US20070169663A1 (en) 2006-01-20 2006-01-20 Sideframe pedestal

Publications (1)

Publication Number Publication Date
US20070169663A1 true US20070169663A1 (en) 2007-07-26

Family

ID=38283433

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/335,811 Abandoned US20070169663A1 (en) 2006-01-20 2006-01-20 Sideframe pedestal

Country Status (10)

Country Link
US (1) US20070169663A1 (pt)
CN (1) CN101011972B (pt)
AU (1) AU2007200223B2 (pt)
BR (1) BRPI0700065B1 (pt)
CA (1) CA2574323C (pt)
MX (1) MX2007000720A (pt)
RU (1) RU2337846C1 (pt)
SE (1) SE531641C2 (pt)
UA (1) UA93983C2 (pt)
ZA (1) ZA200700556B (pt)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9150226B2 (en) 2004-07-15 2015-10-06 Amsted Rail Company, Inc. Mounting ring
WO2017112433A1 (en) * 2015-12-21 2017-06-29 Standard Car Truck Company Railroad car truck with warp restraints
US20190168786A1 (en) * 2017-12-04 2019-06-06 Standard Car Truck Company Railroad car truck with warp restraints
US11008027B2 (en) * 2017-12-18 2021-05-18 Standard Car Truck Company Railroad car truck with warp restraints
US20220153321A1 (en) * 2020-11-13 2022-05-19 Alstom Transport Technologies Railway vehicle bogie and associated railway vehicle and machining process

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9637143B2 (en) 2013-12-30 2017-05-02 Nevis Industries Llc Railcar truck roller bearing adapter pad systems
US10358151B2 (en) 2013-12-30 2019-07-23 Nevis Industries Llc Railcar truck roller bearing adapter-pad systems
US10569790B2 (en) 2013-12-30 2020-02-25 Nevis Industries Llc Railcar truck roller bearing adapter-pad systems
US9669846B2 (en) * 2013-12-30 2017-06-06 Nevis Industries Llc Railcar truck roller bearing adapter pad systems
US12291247B2 (en) 2013-12-30 2025-05-06 Nevis Industries Llc Railcar truck roller bearing adapter-pad systems

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5509358A (en) * 1994-12-08 1996-04-23 Amsted Industries Incorporated Railcar truck bearing adapter construction
US5924366A (en) * 1998-03-27 1999-07-20 Buckeye Steel Castings Side frame pedestal roof with rocker seats
US6125767A (en) * 1998-06-26 2000-10-03 Amsted Industries Incorporated Railway truck sideframe with reinforced columns
US6142081A (en) * 1998-05-07 2000-11-07 Naco, Inc. Pedestal rocker seat for providing passive axle steering to a rigid railway truck
US20050268813A1 (en) * 2004-06-08 2005-12-08 Asf-Keystone. Inc. Railway truck pedestal bearing adapter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2634713B1 (fr) * 1988-07-27 1992-01-17 Sambre & Meuse Usines Unite ferroviaire, telle que wagon ou bogie, a essieux stabilises par friction
RU2275308C2 (ru) * 2004-06-22 2006-04-27 Общество С Ограниченной Ответственностью "Головное Специализированное Конструкторское Бюро Вагоностроения" Тележка двухосная для грузовых вагонов

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5509358A (en) * 1994-12-08 1996-04-23 Amsted Industries Incorporated Railcar truck bearing adapter construction
US5924366A (en) * 1998-03-27 1999-07-20 Buckeye Steel Castings Side frame pedestal roof with rocker seats
US6142081A (en) * 1998-05-07 2000-11-07 Naco, Inc. Pedestal rocker seat for providing passive axle steering to a rigid railway truck
US6125767A (en) * 1998-06-26 2000-10-03 Amsted Industries Incorporated Railway truck sideframe with reinforced columns
US20050268813A1 (en) * 2004-06-08 2005-12-08 Asf-Keystone. Inc. Railway truck pedestal bearing adapter

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9150226B2 (en) 2004-07-15 2015-10-06 Amsted Rail Company, Inc. Mounting ring
WO2017112433A1 (en) * 2015-12-21 2017-06-29 Standard Car Truck Company Railroad car truck with warp restraints
US10336349B2 (en) 2015-12-21 2019-07-02 Standard Car Truck Company Railroad car truck with warp restraints
US20190168786A1 (en) * 2017-12-04 2019-06-06 Standard Car Truck Company Railroad car truck with warp restraints
US11027755B2 (en) * 2017-12-04 2021-06-08 Standard Car Truck Company Railroad car truck with warp restraints
US11008027B2 (en) * 2017-12-18 2021-05-18 Standard Car Truck Company Railroad car truck with warp restraints
US20220153321A1 (en) * 2020-11-13 2022-05-19 Alstom Transport Technologies Railway vehicle bogie and associated railway vehicle and machining process
FR3116255A1 (fr) * 2020-11-13 2022-05-20 Alstom Transport Technologies Bogie de véhicule ferroviaire, véhicule ferroviaire et procédé d’usinage associés
EP4001048A1 (fr) * 2020-11-13 2022-05-25 ALSTOM Transport Technologies Bogie de véhicule ferroviaire, véhicule ferroviaire et procédé d'usinage associés
US11993296B2 (en) * 2020-11-13 2024-05-28 Alstom Transport Technologies Railway vehicle bogie and associated railway vehicle and machining process

Also Published As

Publication number Publication date
CA2574323C (en) 2010-05-11
BRPI0700065A (pt) 2007-11-06
ZA200700556B (en) 2010-07-28
UA93983C2 (ru) 2011-03-25
RU2337846C1 (ru) 2008-11-10
SE531641C2 (sv) 2009-06-16
RU2007102027A (ru) 2008-07-27
CN101011972A (zh) 2007-08-08
CN101011972B (zh) 2011-04-13
AU2007200223A1 (en) 2007-08-09
CA2574323A1 (en) 2007-07-20
BRPI0700065B1 (pt) 2018-07-17
MX2007000720A (es) 2008-11-19
AU2007200223B2 (en) 2010-04-01
SE0700110L (sv) 2007-07-21

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Date Code Title Description
AS Assignment

Owner name: ASF KEYSTONE, INC., ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BERG, THOMAS R.;MYERS, JAMES;FISHER, KURT;REEL/FRAME:017500/0893;SIGNING DATES FROM 20051019 TO 20051202

AS Assignment

Owner name: CITIICORP NORTH AMERICA, INC., NEW YORK

Free format text: AMENDED AND RESTATED INTELLECTUAL PROPERTY SECURITY AGREEMENT DATED APRIL 6, 2006;ASSIGNORS:AMSTED INDUSTRIES INCORPORATED;AMCONSTRUCT CORPORATION;AMRAIL CORPORATION;AND OTHERS;REEL/FRAME:017448/0376

Effective date: 20060406

AS Assignment

Owner name: AMSTED RAIL COMPANY, INC., ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ASF-KEYSTONE, INC.;BRENCO, INC.;GRIFFIN WHEEL COMPANY;AND OTHERS;REEL/FRAME:022052/0769

Effective date: 20081001

Owner name: AMSTED RAIL COMPANY, INC.,ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ASF-KEYSTONE, INC.;BRENCO, INC.;GRIFFIN WHEEL COMPANY;AND OTHERS;REEL/FRAME:022052/0769

Effective date: 20081001

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION

AS Assignment

Owner name: BANK OF AMERICA, N.A., AS THE SUCCESSOR COLLATERAL

Free format text: INTELLECTUAL PROPERTY SECURITY INTEREST ASSIGNMENT AGREEMENT;ASSIGNOR:CITICORP NORTH AMERICA, INC., AS THE RESIGNING COLLATERAL AGENT (AS SUCCESSOR IN INTEREST OF CITICORP USA, INC.);REEL/FRAME:023471/0036

Effective date: 20090930

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Owner name: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS SUCCESSOR AGENT, NORTH CAROLINA

Free format text: NOTICE OF SUCCESSOR AGENT AND ASSIGNMENT OF SECURITY INTEREST AT REEL/FRAME 023471/0036;ASSIGNOR:BANK OF AMERICA, N.A., AS THE RESIGNING AGENT;REEL/FRAME:070156/0759

Effective date: 20250206