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WO2014066140A1 - Axe pour ensemble attelage-mâchoire - Google Patents

Axe pour ensemble attelage-mâchoire Download PDF

Info

Publication number
WO2014066140A1
WO2014066140A1 PCT/US2013/065476 US2013065476W WO2014066140A1 WO 2014066140 A1 WO2014066140 A1 WO 2014066140A1 US 2013065476 W US2013065476 W US 2013065476W WO 2014066140 A1 WO2014066140 A1 WO 2014066140A1
Authority
WO
WIPO (PCT)
Prior art keywords
knuckle
pin
shaft
coupler
polymeric
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.)
Ceased
Application number
PCT/US2013/065476
Other languages
English (en)
Inventor
Wang WEIPING
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
Amsted Rail Co 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 Rail Co Inc filed Critical Amsted Rail Co Inc
Priority to MX2014015038A priority Critical patent/MX355530B/es
Priority to AU2013334978A priority patent/AU2013334978B2/en
Priority to CA2889083A priority patent/CA2889083C/fr
Priority to NZ708400A priority patent/NZ708400A/en
Priority to BR112015009079A priority patent/BR112015009079A2/pt
Priority to CN201380054590.XA priority patent/CN104781128A/zh
Publication of WO2014066140A1 publication Critical patent/WO2014066140A1/fr
Priority to ZA2014/05399A priority patent/ZA201405399B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G3/00—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements
    • B61G3/04—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements with coupling head having a guard arm on one side and a knuckle with angularly-disposed nose and tail portions pivoted to the other side thereof, the nose of the knuckle being the coupling part, and means to lock the knuckle in coupling position, e.g. "A.A.R." or "Janney" type

Definitions

  • This invention relates generally to railway ear coupling systems, and more particularly to an improved polymeric knuckle pin.
  • This invention is applicable to any type of coupler that uses a pin to pivotally secure the coupler and knuckle together.
  • the knuckle pin pivotally connects a coupler and a knuckle on a railway car.
  • Such railway knuckle pins are usually comprised of a metal or plastic material.
  • Knuckle pins are shown in U.S. Pat. Nos. 5,145,076, 5,630,519, and 5,736,088.
  • Prior known knuckle pins were made of either metal or plastic material. Metal pins are heavy, limiting the number of pins a maintenance worker can carry while checking the coupler-knuckle connection on the railroad cars. Metal pins are also very hard to maintain because they are susceptible to rust and corrosion.
  • buff and draft movements cause the coupler-knuckle connection to exert stress, force, and impact on the knuckle pin.
  • the high hardness of a metal pin may cause damage to the coupler or knuckle.
  • the pin may bend and impede coupler-knuckle operation, and in rotator cars, if structurally compromised the pin may drop out and cause damage to the crushers.
  • Prior known plastic knuckle pins alleviate some of the damages problems caused by the metal knuckle pins, however, the plastic pins were susceptible to defects caused during the formation process. It was not uncommon for plastic pins to contain air and moisture pockets, making the pins non-uniform in their material matrix. Other plastic pins contained spaced-apart annular relief areas in the shaft to improve the overall uniformity of the plastic material. However, these relief areas significantly compromise the structural integrity of the pin and create multiple stress concentration points causing the plastic pins to break easier.
  • the present invention provides an improved, impact and stress absorbing knuckle pin that reduces fatigue in the coupler, knuckle, and knuckle pin.
  • an improved railway car polymeric knuckle pin is provided for use in a railway car coupler assembly.
  • the polymeric knuckle pin is comprised of a shaft, a head on one end of the shaft, and a locking mechanism on the end of the shaft opposite the head to secure the pin in position as a pivot point between a coupler and a knuckle connection on a railway car.
  • the knuckle pin contains at least one groove in the shaft. The grove is strategically placed in an area on the shaft of the pin where the coupler-knuckle connection exerts impact, force, and stress on the pin.
  • a single or plurality of elastomer rings is placed in the groove or grooves on the shaft.
  • the elastomer rings in the groove provide cushion to the pin from the impact, force, and stress, allow the pin to avoid hard contact with the coupler and knuckle, distribute the loads exerted by the coupler and knuckle more evenly, realign the coupler and knuckle positions, and protect the pin itself from surface cuts and scratches.
  • the elastomer rings on the shaft of the pin improve the life of both the coupler-knuckle assembly and the pin.
  • a polymeric knuckle pin is comprised of a shaft, a head on one end of the shaft, and a locking mechanism on the other end of the shaft opposite the head.
  • the shaft containing at least one groove at a point where the coupler-knuckle connection exerts force on the shaft of the pin.
  • the groove or grooves contain a single elastomer ring or plurality of elastomer rings.
  • the head of the pin is non-round shape.
  • the shaft contains a center area between the head and the locking mechanism where the diameter of the shaft is smaller than the diameter of the rest of the shaft,
  • Fig. 1 is a top perspective view of a coupler-knuckle assembly with the improved knuckle pin of the present invention in place;
  • Fig. 2 is a front elevational view of the improved knuckle pin of the present invention
  • Fig. 3 is a side elevational view of the improved knuckle pin of the present invention.
  • Fig. 4 is a top plan view of the improved knuckle pin of the present invention
  • Fig. 5 is a bottom plan view of the improved knuckle pin of the present invention
  • Fig, 6 is side perspective view of a second embodiment of the improved knuckle pin of the present invention.
  • Fig, 7 is a sectional view of the coupler-knuckle assembly along lines 7— 7 of Fig
  • a coupler-knuckle assembly incorporating preferred embodiment the present invention is generally designated 10 and includes a coupler body 12, a knuckle 14, and a knuckle pin 16.
  • the knuckle 14 is pivotally connected to the coupler body 12 by the knuckle pin 16.
  • the coupler body 12, as shown, has its knuckle 14 in the closed position.
  • the knuckle pin of the present invention generally indicated 16, includes a shaft 32 with a center region 33, a top end 35, and a bottom end 42.
  • a knuckle-pin head 30 is on the top end 35 of the shaft 32, and a snap lock locking mechanism 36 is on the bottom end 42 of the shaft 32.
  • the knuckle pin of the present invention is preferably a solid piece of molded urethane or polyurethane as described below.
  • the polymeric pin is lighter and more resilient, accepts bending fatigue better, and creates less friction as a pivot point between the coupler and knuckle improving performance of the coupler-knuckle assembly.
  • the knuckle pin head 30 of the pin 16 has a dome-shaped top 3 1 , which is sized diametrically larger than the shaft 32.
  • the pin head 30 also has a significantly larger diameter than the pinhole in the coupler-knuckle assembly.
  • An annular radius 34 is formed between the top end of the shaft 35 and the pin head 30 to protect against damage to the pin when installing the pin.
  • the locking mechanism 36 is comprised of two snap lock tabs 37 and 39,
  • the snap lock tabs 37 and 39 are compressed together or towards each other as the pin is inserted into the coupler-knuckle assembly 10 and expand when the pin is fully inserted into the coupler-knuckle assembly,
  • the snap lock tabs 37 and 39 secure the knuckle pin in the coupler-knuckle assembly, because once the pin is fully inserted into the assembly, the snap lock tabs expand or snap-out to greater diameter than the pinhole in the coupler body, A cotter pin or other suitable locking mechanisms can also be used.
  • the shaft 32 is generally cylindrical in shape and includes at least one indented area, wherein the indented area is diametrically smaller than the shaft 32.
  • An upper indented area 38 and a lower indented area 38B are located on the shaft 32 in the coupler-knuckle impact regions 1 12 and 1 13 (shown in Fig, 7), but the groove can extend beyond the coupler-knuckle impact regions 1 12 and 1 13.
  • One indented area 38 is located on shaft 32 where the shaft 32 contacts the coupler body 12 and knuckle 14 in the coupler-knuckle top impact region 1 12, and the other indented area 38B is located on the shaft 32 where the shaft 32 contacts the coupler body 12 and knuckle 14 in the coupler-knuckle bottom impact region 1 13.
  • Elastomer rings 40 are located on the shaft 32 covering and filling some or all of the indented areas. In the areas of the shaft 32 where the indented areas and the elastomer rings 40 are located, the diameter of the indented area plus the rings 40 are the same as the diameter of the shaft 32 or slightly l arger than the diameter of the shaft.
  • the elastomer rings of the present invention are preferably made from thermal plastic polyurethane material, but the rings can be made from any material having a high elasticity and resiliency.
  • the number of elastomer rings varies depending on the length of the indented area and the diameter of the rings, but preferably a plurality of elastomer rings are placed inside each indented area. Placement of the elastomer rings in the indented areas along the area where the coupler-knuckle connection exerts the greatest stress, force, and impact on the knuckle pin allows fatigue on both the coupler-knuckle assembly and the pin to be reduced.
  • the elastomer rings deform elastically absorbing the force and stress from the coupler-knuckfe connection and cushion any impact that occurs.
  • knuckle pin 16 is shown in a side elevational view.
  • the knuckle pin 16 is completely symmetrical except for the locking mechanism 36 on the bottom end 42 of the shaft 32.
  • the two snap lock tabs 37 and 39 are only on two sides of the knuckle pin 16. Everything else shown is the same as previously described in Fig. 2.
  • a top plan view shows that in the preferred embodiment of the present invention, the knuckle pin head 30 is circular in shape. As shown, the elastomer rings 40 extend radially outward, slightly beyond the diameter of the shaft 32.
  • a bottom plan view of the knuckle pin 16 shows that the pin is completely symmetrical except for the snap lock tabs 37 and 39 on the bottom end 42 of the shaft 32.
  • FIG. 6 another embodiment of the knuckle pin of the present invention is shown at 60, including a shaft 66, wherein the shaft 66 has a top end 67, a center region 68, and a bottom end 69, a knuckle-pin head 62 on the top end 67 of the shaft 66, and a locking mechanism 76 on the bottom end 69 of the shaft 66.
  • the indented area 72 and elastomer ring 74 structure is the same as described in Fig. 2.
  • the knuckle pin head 62 is a non-round shape 64 preventing rotation of the knuckle pin 60 while inserted in the coupler-knuckle assembly 10.
  • the knuckle pin head 62 as shown has one flat side with the remaining sides round, but any other non-round shapes are contemplated in this invention.
  • the shaft 66 has a reduction in the shaft diameter 70 in the center region 68 of the shaft 66. Typically during use, very little stress is paced on the center region 68 of the shaft 66.
  • the reduction in shaft diameter 70 allows the knuckle pin 60 to be lighter because less material is used, while also facilitating the cooling process by allowing the pin to cool faster and more evenly, ensuring the pin has a uniform material matrix after the molding process.
  • the bottom end of the shaft 69 has a bottom extension 78 with a hole 80. This is a non-standard element on most knuckle pins, but it allows a compressed air hose to be tied to the shaft through the hole 80.
  • a sectional view including the knuckle pin 16 of the present invention locked into place in a coupler-knuckle assembly 10 is shown.
  • the knuckle pin 16 is inserted into the coupler pinhole 114 that is aligned with the knuckle pinhole 116 until the locking mechanism 76 engages and prevents the pin from coming loose or falling out of the coupler-knuckle assembly 10.
  • the indented area 72 containing the elastomer rings 74 are aligned with the coupler-knuckle impact regions 112.
  • the coupler-knuckle impact regions 112 are where the coupler-knuckle assembly 10 exerts the greatest amount of force, impact, and stress on the knuckle pin 16.
  • the force and stress exerted on the knuckle pin 16 are caused by the misalignment of the knuckle pulling lugs 100 and the coupler body pulling lugs 106.
  • the knuckle has two upper pulling lugs 101 and 102, and two lower pulling lugs 103 and 104.
  • the coupler body has two upper pulling lugs 107 and 108, and two lower pulling lugs 109 and 110, While in use, when uneven force is exerted on the upper and lower pulling lugs of the coupler and knuckle, the coupler knuckle assembly can become misaligned placing force, stress, and impact on the knuckle pin 16.
  • the elastomer rings 74 deform elastically absorbing the force, impact, and stress exerted on the knuckle pin 16 reducing the fatigue of the pin, and the resiliency of the elastomer rings realign the coupler 12 and knuckle 14, Once the coupler 12 and the knuckle 14 are realigned in their original and proper position, and the outside stress is removed from the knuckle pin 16, the elastomer rings 74 fully recover to their original position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Vibration Dampers (AREA)

Abstract

Axe d'attelage polymère amélioré comportant au moins une zone évidée dans laquelle sont placées des bagues en élastomère. La zone évidée est stratégiquement placée dans une zone de la tige d'axe dans laquelle l'accouplement attelage-mâchoire exerce des chocs, des forces et des contraintes sur l'axe. Les bagues en élastomère situées dans la zone évidée permettent l'amortissement des chocs, des forces et des contraintes exercés sur l'axe, permettant à l'axe d'éviter un contact dur avec l'attelage et la mâchoire, répartissent les charges exercées par l'attelage et la mâchoire de manière plus uniforme, réalignent les positions de l'attelage et de la mâchoire et protègent l'axe lui-même des entailles et des éraflures de surface. Lesdites bagues en élastomère situées sur la tige de l'axe améliorent la durée de vie de l'ensemble attelage-mâchoire ainsi que de l'axe.
PCT/US2013/065476 2012-10-24 2013-10-17 Axe pour ensemble attelage-mâchoire Ceased WO2014066140A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
MX2014015038A MX355530B (es) 2012-10-24 2013-10-17 Perno articulado acoplador.
AU2013334978A AU2013334978B2 (en) 2012-10-24 2013-10-17 Coupler knuckle pin
CA2889083A CA2889083C (fr) 2012-10-24 2013-10-17 Axe pour ensemble attelage-machoire
NZ708400A NZ708400A (en) 2012-10-24 2013-10-17 Coupler knuckle pin
BR112015009079A BR112015009079A2 (pt) 2012-10-24 2013-10-17 pino de articulação polimérico em um acoplador de vagão ferroviário
CN201380054590.XA CN104781128A (zh) 2012-10-24 2013-10-17 车钩关节销
ZA2014/05399A ZA201405399B (en) 2012-10-24 2014-07-22 Coupler knuckle pin

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/659,509 2012-10-24
US13/659,509 US20140110368A1 (en) 2012-10-24 2012-10-24 Coupler knuckle pin

Publications (1)

Publication Number Publication Date
WO2014066140A1 true WO2014066140A1 (fr) 2014-05-01

Family

ID=50484393

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2013/065476 Ceased WO2014066140A1 (fr) 2012-10-24 2013-10-17 Axe pour ensemble attelage-mâchoire

Country Status (9)

Country Link
US (1) US20140110368A1 (fr)
CN (1) CN104781128A (fr)
AU (1) AU2013334978B2 (fr)
BR (1) BR112015009079A2 (fr)
CA (1) CA2889083C (fr)
MX (1) MX355530B (fr)
NZ (1) NZ708400A (fr)
WO (1) WO2014066140A1 (fr)
ZA (1) ZA201405399B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9701323B2 (en) 2015-04-06 2017-07-11 Bedloe Industries Llc Railcar coupler
RU184610U1 (ru) * 2018-08-23 2018-10-31 РЕЙЛ 1520 АйПи ЛТД Автосцепка грузового вагона
US11608095B2 (en) 2019-01-29 2023-03-21 Pennsy Corporation Knuckle pin

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4976363A (en) * 1989-11-30 1990-12-11 Amsted Industries Incorporated Knuckle pin retainer for railway vehicle coupler
US5145076A (en) * 1990-11-13 1992-09-08 Zeftek, Inc. Plastic knuckle pin with annular relief grooves for preventing pin failure due to fatigue
US5630519A (en) * 1996-03-27 1997-05-20 Zeftek, Inc. Plastic knuckle pin
US6834879B1 (en) * 2002-09-12 2004-12-28 Robin Industries, Inc. Elastomerically isolated tow hitch drawbar
WO2007082315A1 (fr) * 2006-01-09 2007-07-19 Deebar Mining & Industrial Supplies Cc Systeme de transport

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6062406A (en) * 1998-03-26 2000-05-16 Naco, Inc. Pivot pin and retention clip assembly for a railroad car coupler
CN201235827Y (zh) * 2008-07-08 2009-05-13 中国北车集团大同电力机车有限责任公司 防止13号车钩的钩舌销弯曲的结构
CN201334032Y (zh) * 2008-12-19 2009-10-28 南车长江车辆有限公司 铁路车辆用固定车钩

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4976363A (en) * 1989-11-30 1990-12-11 Amsted Industries Incorporated Knuckle pin retainer for railway vehicle coupler
US5145076A (en) * 1990-11-13 1992-09-08 Zeftek, Inc. Plastic knuckle pin with annular relief grooves for preventing pin failure due to fatigue
US5630519A (en) * 1996-03-27 1997-05-20 Zeftek, Inc. Plastic knuckle pin
US6834879B1 (en) * 2002-09-12 2004-12-28 Robin Industries, Inc. Elastomerically isolated tow hitch drawbar
WO2007082315A1 (fr) * 2006-01-09 2007-07-19 Deebar Mining & Industrial Supplies Cc Systeme de transport

Also Published As

Publication number Publication date
BR112015009079A2 (pt) 2017-08-08
AU2013334978A1 (en) 2015-06-11
AU2013334978B2 (en) 2016-10-06
NZ708400A (en) 2017-05-26
US20140110368A1 (en) 2014-04-24
MX355530B (es) 2018-04-20
ZA201405399B (en) 2015-11-25
CN104781128A (zh) 2015-07-15
CA2889083A1 (fr) 2014-05-01
MX2014015038A (es) 2015-03-05
CA2889083C (fr) 2017-03-21

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