US3926127A - Railway axle friction snubber assembly - Google Patents

Railway axle friction snubber assembly Download PDF

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Publication number
US3926127A
US3926127A US425949A US42594973A US3926127A US 3926127 A US3926127 A US 3926127A US 425949 A US425949 A US 425949A US 42594973 A US42594973 A US 42594973A US 3926127 A US3926127 A US 3926127A
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US
United States
Prior art keywords
axle spring
axle
cap
railway cars
projection
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
US425949A
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English (en)
Inventor
Seisuke Shima
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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
Priority claimed from AU63740/73A external-priority patent/AU471240B2/en
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to FR7345442A priority Critical patent/FR2271094B1/fr
Priority to US425949A priority patent/US3926127A/en
Application granted granted Critical
Publication of US3926127A publication Critical patent/US3926127A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B61F5/308—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating damping devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/04—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and mechanical damper or dynamic damper

Definitions

  • a wing-shaped axle spring snubbing device for railway cars wherein a cap is mounted on each axle spring and a friction shoe having a projection projecting out of a bore made in an inside wall of an axle spring guide containing said cap is engaged with a friction surface of an axle box so that, when the axle spring is compressed, the cap may be moved to the friction surface side, thereby the moving force may be transmitted to the friction shoe through the projection and this friction shoe may be frictionally engaged with the friction surface.
  • This invention relates to axle spring snubbing devices for railway cars.
  • axle spring snubbing device in a wing-shaped axle box wherein a link mechanisim is provided between a cap of the axle spring and a truck frame.
  • link mechanisim is provided between a cap of the axle spring and a truck frame.
  • An object of the present invention is to provide an axle spring snubbing device for railway cars wherein the above mentioned defects are eliminated, the maintenance and inspection are little required or are easy and the assembly is simple.
  • FIG. 1 is a partly verticallysectioned view of a first embodiment of an axle spring snubbing device in a wing type axle box for railway cars according to the present invention
  • FIG. 2 is a perspective view of a cap used in the embodiment in FIG. 1;
  • FIG. 3 is a perspective view of a friction shoe used in the axle spring snubbing device according to the present invention.
  • FIG. 4 is a partly vertically sectioned viewof a second embodiment of the axle spring snubbing device
  • FIG. 5 is a partly vertically sectioned view of a third embodiment of the axle spring snubbing device
  • FIG. 6 is a perspective view of only the lower part of an axle spring guide used in the embodiment in FIG. 5 seen as sectioned on line 66 of FIG. 5;
  • FIG. 7 is a perspective view of a cap used in the embodiment in FIG. 5;
  • FIG. 8 is a view showing a further embodiment of the axle spring snubbing device according to the present invention.
  • FIG. 9 is a perspective view of a cap used in the embodiment shown in FIG. 8;
  • FIG. 10 is a sectional view on line 10- 10 of FIG. 1;
  • FIG. 11 is a sectional view on line 11l1 of FIG. 1;
  • FIG. 12 is a sectional view on line 12-12 of FIG. 5;
  • FIG. 13 is a perspective view of the cap 9' of FIG. 4.
  • FIG. 14 is a sectional view on line 14-14 of FIG. 4.
  • 1 is a wing type axle box supporting an axle of a wheel and 2 is truck frame having friction surfaces 3 on both upper sides of the axle box 1.
  • Axle springs 4 are provided as usual between the axle box 1 and truck frame 2.
  • a bore 6 connecting the axle spring side and axle box side with each other is made in the inside wall of the axle spring guide 5 in the truck frame 2.
  • a projection 8 on the back surface of the friction shoe 7 in contact with the friction surface 3 of the axle box 1 projects on the axle spring side out of the bore 6.
  • a bar-shaped projection 10 of a semicircular cross-section is made in a position displaced to the side opposite the friction surface 3 of the axle box 1 from the middle of the upper part, that is, of the closed side of the cap 9.
  • a concave part 11 is made on the inside surface of the axle spring guide 5 corresponding to the projection 10. Said projection 10 is engaged with the concave part 11.
  • a rather outward; projected surface 12 on the axle box friction surface side of the cap 9 is incontact with the end surface of the projection 8 of the friction shoe 7.
  • a projection 10 is provided on a cap 9 eccentrically from the center of the cap so that the projection 10 engages with a concave part 11 at the eccentric position. Due to this eccentric engagement, when the truck frame 2 descends, the cap 9 is pressed down against the action of the axle spring 4 in such a manner that it moves downwardly and pivots in the clockwise direction, thereby causing the friction shoe 7 to engage the friction surface 3.
  • the structure is substantially the same except the cap or axle spring guide in the above mentioned embodiment. Therefore, the same reference numerals are attached to the same respective parts.
  • a proj ection 10 of a cap 9 is pivoted with a pin 13 in a concave part 1 l
  • a hole 11" in the truck frame 2 receives a projection 10'', the outwardly projecting surface 12" engages the the projection of the friction shoe 8, while a pair of projections 15 each having a diagonally upward inclined surface 14 toward the side of the friction surface 3 are made on the outside surfaces on both sides of a cap 9".
  • Inclined parts 16 corresponding to the inclined surfaces 14 are provided on the inside surfaces of an axle spring guide 5".
  • a cap 9" has a projection 10" substantially triangular in transverse section and having an inclined surface 17 and a similar projecting surface 12 engages the projection 8 of the friction shoe 7.
  • An inclined concave part 18 corresponding to the inclined surface 17 is made in an axle spring guide sill.
  • the inclined surfaces 14 and 17 in the axle spring guides will slide along the inclined surfaces 16 and 18, respectively.
  • the cap will move toward the friction surface 3 the end surface 12 of the cap will push the end surface of the projection 8 on the friction shoe 7 and therefore the friction shoe 7 will be pushed against the friction surface 3 of the axle box 1 to make any desired spring snubbing effect.
  • an oil damper as in the conventional technique is not required, the component parts are few in the structure and therefore the maintenance, inspection and assembly are easy.
  • An axle spring snubbing device for railway cars comprising a friction surface provided on each upper side surface of a wing type axle box, an axle spring interposed between said axle box and a truck frame, a cap means mounted on the upper end of the axle spring between said upper end and said truck frame, an axle spring guide provided in the truck frame, mutually directly engaging means on said cap means and axle spring guide, respectively, for moving said cap means laterally toward a friction surface of said axle box when the axle spring is compressed and a laterally movable friction shoe means provided between said cap and said axle box friction surface.
  • An axle spring snubbing device for railway cars according to claim 1 wherein said moving means comprises a first engaging means provided on the upper surface of said cap means and offset toward the side thereof away from said axle box and a second engaging means provided in said axle spring guide in a position corresponding to said first engaging means.
  • An axle spring snubbing device for railway cars wherein said first engaging means is a bar-shaped projection of a semicircular cross-section provided in a position on the side opposite said friction surface from the center of the upper part of the cap means and said second engaging means is a concave part made on the inside surface of said axle spring guide in a position corresponding to said projection so that the center axis of said axle spring and the engaging part of said projection and concave are laterally displaced from each other.
  • An axle spring snubbing device for railway cars according to claim 3 wherein said projection is pivoted in said concave part with a pin.
  • An axle spring snubbing device for railway cars according to claim 1 wherein said moving means comprises a first inclined surface provided in said cap means and a second inclined surface provided in said axle spring guiding means in a position corresponding to said first inclined surface.
  • An axle spring snubbing device for railway cars wherein said first inclined surface is provided on each of a pair of projections provided on the outside surfaces on both sides of said cap means and said second inclined surface is provided in a position corresponding to said first inclined surface on the inside surface of said axle spring guide.
  • An axle spring snubbing device for railway cars according to claim 5 wherein said first inclined surface is provided on the upper surface of said cap means and said second inclined surface is provided in said axle spring guide so as to correspond to said first inclined surface.
  • said friction shoe means comprises a back surface projection which can be slidably inserted in a bore made in the inside wall of said axle spring guide and a plate-shaped friction shoe integral with said projection.
  • An axle spring snubbing device for railway cars according to claim 1 wherein a raised surface of said cap means, projected so as to be in contact with said friction shoe means, is provided on the side of said cap means nearest said axle box.
  • An axle spring snubbing device for railway cars according to claim 10 wherein said cap means is substantially in the form of a cylinder closed at one end and tapered at the other opened end.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
US425949A 1973-12-18 1973-12-19 Railway axle friction snubber assembly Expired - Lifetime US3926127A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7345442A FR2271094B1 (enrdf_load_stackoverflow) 1973-12-18 1973-12-19
US425949A US3926127A (en) 1973-12-18 1973-12-19 Railway axle friction snubber assembly

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU63740/73A AU471240B2 (en) 1973-12-18 1973-12-18 Axle spring snubbing device for railway cars
FR7345442A FR2271094B1 (enrdf_load_stackoverflow) 1973-12-18 1973-12-19
US425949A US3926127A (en) 1973-12-18 1973-12-19 Railway axle friction snubber assembly

Publications (1)

Publication Number Publication Date
US3926127A true US3926127A (en) 1975-12-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
US425949A Expired - Lifetime US3926127A (en) 1973-12-18 1973-12-19 Railway axle friction snubber assembly

Country Status (2)

Country Link
US (1) US3926127A (enrdf_load_stackoverflow)
FR (1) FR2271094B1 (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847735A (en) * 1970-07-10 1974-11-12 Babcock & Wilcox Co Nuclear reactor safety system
FR2490172A1 (fr) * 1980-09-17 1982-03-19 Sncf Agencement de suspension pour vehicules ferroviaires
EP0035443B1 (fr) * 1980-02-29 1984-06-13 USINES ET ACIERIES DE SAMBRE ET MEUSE Société Anonyme Suspension pour chassis à au moins deux essieux de véhicule de chemin de fer et chassis muni de cette suspension
US4648326A (en) * 1985-02-22 1987-03-10 Lukens General Industries, Inc. Radial axle railway truck with axle couplings at sides transversely interconnected with each other
US5315056A (en) * 1992-02-14 1994-05-24 Abb Lummus Crest Inc. Catalyst regeneration in a dehydrogenation process
EP1484228A1 (en) * 2003-05-20 2004-12-08 Powell Duffryn Rail Limited Damping arrangements for Y25 bogies
US20050087091A1 (en) * 2003-10-23 2005-04-28 Bowden A. G. Friction wedge with mechanical bonding matrix augmented composition liner material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10023039A1 (de) * 2000-05-11 2001-11-15 Daimler Chrysler Ag Fahrwerk eines Schienenfahrzeuges mit radial einstellbaren Radsätzen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1951547A (en) * 1931-03-03 1934-03-20 Standard Coupler Co Stabilizer
US2355450A (en) * 1942-02-14 1944-08-08 Standard Car Truck Co Car truck
US2539607A (en) * 1945-01-15 1951-01-30 Symington Gould Corp Railway truck
US2625888A (en) * 1945-09-20 1953-01-20 Symington Gould Corp Railway truck
US2963987A (en) * 1958-02-07 1960-12-13 American Steel Foundries Snubbed suspension means for a railway car wheel and axle assembly
US3517620A (en) * 1966-11-16 1970-06-30 Midland Ross Corp Railway car truck with friction dampened axles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1951547A (en) * 1931-03-03 1934-03-20 Standard Coupler Co Stabilizer
US2355450A (en) * 1942-02-14 1944-08-08 Standard Car Truck Co Car truck
US2539607A (en) * 1945-01-15 1951-01-30 Symington Gould Corp Railway truck
US2625888A (en) * 1945-09-20 1953-01-20 Symington Gould Corp Railway truck
US2963987A (en) * 1958-02-07 1960-12-13 American Steel Foundries Snubbed suspension means for a railway car wheel and axle assembly
US3517620A (en) * 1966-11-16 1970-06-30 Midland Ross Corp Railway car truck with friction dampened axles

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847735A (en) * 1970-07-10 1974-11-12 Babcock & Wilcox Co Nuclear reactor safety system
EP0035443B1 (fr) * 1980-02-29 1984-06-13 USINES ET ACIERIES DE SAMBRE ET MEUSE Société Anonyme Suspension pour chassis à au moins deux essieux de véhicule de chemin de fer et chassis muni de cette suspension
FR2490172A1 (fr) * 1980-09-17 1982-03-19 Sncf Agencement de suspension pour vehicules ferroviaires
EP0048193A1 (fr) * 1980-09-17 1982-03-24 Societe Nationale Des Chemins De Fer Francais Agencement de suspension pour véhicules ferroviaires
US4648326A (en) * 1985-02-22 1987-03-10 Lukens General Industries, Inc. Radial axle railway truck with axle couplings at sides transversely interconnected with each other
US5315056A (en) * 1992-02-14 1994-05-24 Abb Lummus Crest Inc. Catalyst regeneration in a dehydrogenation process
EP1484228A1 (en) * 2003-05-20 2004-12-08 Powell Duffryn Rail Limited Damping arrangements for Y25 bogies
EP1925526A1 (en) * 2003-05-20 2008-05-28 English Welsh & Scottish Railway Holdings Limited Improvements in the track friendliness of the Y25 bogie
US20050087091A1 (en) * 2003-10-23 2005-04-28 Bowden A. G. Friction wedge with mechanical bonding matrix augmented composition liner material
US6971319B2 (en) 2003-10-23 2005-12-06 Westinghouse Air Brake Technologies Corporation Friction wedge with mechanical bonding matrix augmented composition liner material

Also Published As

Publication number Publication date
FR2271094B1 (enrdf_load_stackoverflow) 1978-04-14
FR2271094A1 (enrdf_load_stackoverflow) 1975-12-12

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