US2981207A - Railway trucks and similar carriages - Google Patents

Railway trucks and similar carriages Download PDF

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Publication number
US2981207A
US2981207A US742886A US74288658A US2981207A US 2981207 A US2981207 A US 2981207A US 742886 A US742886 A US 742886A US 74288658 A US74288658 A US 74288658A US 2981207 A US2981207 A US 2981207A
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United States
Prior art keywords
bolster
links
frame
respect
unit
Prior art date
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Expired - Lifetime
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US742886A
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English (en)
Inventor
Paulsen Jean Felix
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.)
Luxembourgeoise de Brevets et de Participations SA
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Luxembourgeoise de Brevets et de Participations SA
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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
    • B61F5/50—Other details
    • B61F5/52—Bogie frames
    • 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
    • B61F5/32—Guides, e.g. plates, for axle-boxes
    • B61F5/325—The guiding device including swinging arms or the like to ensure the parallelism of the axles

Definitions

  • the present invention relates to railway trucks and similar carriages including at least two pairs of wheels, a frame fixed in the transverse direction with respect to the axle bearings of said wheels, and a bolster for pivotally supporting a carriage body or the like, said bolster being movably mounted on said frame so as to be capable of suitable displacements with respect thereto.
  • the object of this invention is to provide a truck of this kind which is better adapted to meet the requirements of practice than those existing at the present time.
  • said bolster is connected with said frame directly by 2,981,207 Patented Apr. 25, 1961 Furthermore, the lateral ends of said bolster 2 form side bearings 10 adapted to cooperate with portions 11, for instance in the form of circular sectors, fixed on the under face of the carriage body and adapted to slide on said bearings 10.
  • the above mentioned links 3 are each constituted by two plates having a good resistance to compression and pivoted about the geometrical axes of two spindles 19 mounted in fixed position, one with respect to frame 1 and the other with respect to bolster 2.
  • Said plates 3 carry, rigid therewith, tubular elements 13 (Fig. 6) coaxially surrounding spindles 19 in fixed position with respect thereto.
  • frame two links located on opposite sides, respectively, of the longitudinal middle plane of the frame, each of said links having its lower part pivoted to said frame about a longitudinal axis and its upper part pivoted to said bolster about a longitudinal axis.
  • Fig. 1 is a perspective view of a railway truck made according to the invention.
  • Figs. 2, 3 and 4 show said truck, respectively in elevational view, in plan view with parts in cross-section and in vertical section on the line IV--IV of Fig. 2.
  • Figs. 5 and 6 show, on an enlarged scale, respectively a detail of Fig. 3 and a portion of the truck in section on the line VI-VI of Fig. 4.
  • Figs. 7 and 8 show, in plan view with parts in crosssection and in vertical section on the line VIII-VIII of Fig. 7, a modification of a truck made according to the invention.
  • the railway truck shown by Figs. 1 to 6 includes two pairs of wheels 7, a frame 1 fixed in the transverse direction with respect to the bearings 5 of the axles 6 of said wheels, and a bolster 2 for pivotally supporting a carriage body or the like, said bolster 2 being movably mounted on frame 1 so as to be capable of suitable displacements with respect thereto.
  • bolster 2 is connected with frame 1 directly by two links 3 located on opposite sides, respectively, of the longitudinal middle plane of frame 1, each of said links 3 having its lower part pivoted to said frame about the longitudinally extending axis of a spindle 19 and its upper part pivoted to said bolster about the longitudinally extending axis of a spindle also designated by reference numeral 19.
  • axle bearings 5 are mounted on levers 4 pivoted to frame 1 about transverse axes, respectively, as visible at 22 (Figs. 1 and 2), said levers including upwardly extending arms the top portions of which are applied against opposite ends of a spring structure 8 arranged resiliently to oppose compression thereof by said arms of levers 4.
  • Bolster 2 is provided, in its central part, with a housing 9 adapted to accommodate the pivot'of the carriage body.
  • Sleeve 14 may be given any suitable thickness so as to adjust the thickness of the interstice between them and cylindrical element 17. Of course, this sleeve 14, might be dispensed with, the viscous material being placed between cylindrical part 17 and a. tubular part integral with elements 14.
  • the viscous material which tends to prevent rotation of the parts 14 and 17 with respect to each other is for instance constituted by a polymer obtained from an organic monomer, such as a hydrocarbon of the ethylene series C H the molecular structure of which has only one double link.
  • a material comprises polyisobutylene of molecular weight ranging from 5,000 to 25,000, possibly mixed with polyisobutylene of still higher molecular weight averaging 80,000.
  • silicone elastomers or other analogous substances may also be used.
  • the thickness of the interstice in which said viscous material is placed (for instance the distance between elements 17 and 14 preferably ranges from to some tenths of a millimeter.
  • bolster element 2 which is supported by frame 1, is located above said frame.
  • links 3 are given, as shown by Fig. 4, a slight inclination (p (preferably ranging from 4 to 10) with respect to the vertical, the upper axes 19 being at a smaller distance from each other than the lower axes 19. A torque due to the action of gravity is thus constantly added to the resilient return torque due to the rubber articulations that are used.
  • bearings 10 are disposed in line with the plates forming links 3, so that the stresses on bolster 2 are reduced to a minimum, and said bolster may be made of a weight as reduced as possible.
  • Elastic abutments 20 (Figs. 1, 3 and 4), carried by frame 1, limit the displacements of bolster 2 with respect to said frame by preventing links 3 from moving, during their oscillations, beyond the vertical position.
  • Fig. 3 shows, in horizontal axial position, the articulainner element 21 (Figs. 3
  • At least one annular mass ofrubber 27 made adhesive to both of the above mentioned elements 21 and 26;
  • each lever 4 is provided with an upwardly extending arm the end of which carries said bearing 30.
  • .Structure 8 is constituted by the juxtaposition of a plurality of rubber discs 31 (Figs. 2 and 3) and metal plates 32 each interposed between two rubber discs. ,Saidmetal plates 32 are provided with projections which ensure their centering with respect to the rubber discs.
  • This system constitutes a kind of. compression spring of a type known. under the name of Batra.
  • Such a; resilient structure has the advantage of being oflighter weight than an equivalent steel coil spring and of being provided with substantial damping properties.
  • any other typeof compression springs made either of a metal or an elastomer, and in particular of pneumatic or mixedstructure springs, preferably constituted byhelix-shaped bellowsvmade of a reinforced fabric and combined with at least one coil spring'of the 23, with at least one lug 24 integral with frame '1 and same pitch as described in, the French Patent No.
  • annular cushions of a resilient material rubber or elastomer:
  • axle boxes are located, in the usual manner, on the outer side of the wheels, which ensures a relatively strong opposition to rolling.
  • Suspension springs, 8 are then located slightly toward the outside with respect to levers 4, and the bolster and other suspension elements thereof are disposed between these springs.
  • axle boxes 5 are located on the inner sides of the wheels and levers 4 are therefore also disposed on the inner sides of said wheels.
  • Resilient means for instance a rubber mass (on the right hand side of Fig. 7) connecting together the two levers 4 located on the same axle so that every angular displacement of one of these levers resiliently urges the other one to have a similar displacement;
  • the two arms 4 are pivoted to the bolster by means of a double articulation of the type above described.
  • suspension spring 8 two springs 8 and 8 (Figs. 7 and 8) so as to reduce the vertical dimensions of the truck and to be able to mount bolster 2 so that it extends beyond said resilientstructures 8 8 links 3 being then located on the outer sides of said resilient structure.
  • a truck which comprises, in combination, two pairs of wheels, axles mounted on said wheels, bearings mounted to support said axles, a frame unit supported by said bearings so as to be fixed in the transverse direction with respect thereto, a bolster unit, two links of fixed length located on opposite sides respectively of the longitudinal vertical middle plane of said frame unit for directly connecting said bolster unit with said frame unit, each of said links having its lower part pivoted to said frame unit about a longitudinal axis and its upper part pivoted to said bolster unit about a longitudinal axis, said links constituting the only weight transmitting means between said bolster unit and said frame unit, and return means interposed between at least one of said links and that of said two units to which it is pivoted for resiliently urging said links toward symmetrical positions with respect to said longitudinal middle plane.
  • each of said links is made of two portions parallel to each otherand the center lines of which are located in the planes determined by the two axes about which each link is pivoted to said frame and said bolster respectively, said bolster being provided with two bearing surfaces for supporting a carriage body, each of said bearing surfaces being located on the portion of said bolster extending between said two portions of one of said links.
  • a truck which comprises, in combination, two pairs of wheels, axles mounted on said wheels, bearings mounted to support said axles, a frame unit supported by Said bearings so as to be fixed in the transverse direction withrespect thereto, a bolster unit, two links of fixed length located on opposite sides respectively of the longitudinal vertical middle plane of said frame unit for dif rectly connecting said bolster unit with said frame unit, each, of said links having its lower part pivoted to said frame'unit about a longitudinal axis and its upper part pivoted to saidbolster unit about a longitudinal axis, an l n ssn i mins.
  • a truck which comprises, in combination, two pairs of wheels, axles mounted on said wheels, bearings mounted to support said axles, a frame unit supported by said bearings so as to be fixed in the transverse direction with respect thereto, a bolster unit, two links of fixed length located on opposite sides respectively of the longitudinal vertical middle plane of said frame unit for directly connecting said bolster unit with said frame unit, each of said links having its lower part pivoted to said frame unit about a longitudinal axis and its upper part pivoted to said bolster unit about a longitudinal axis, said links constituting the only weight transmitting means between said bolster unit and said frame unit, and means interposed between at least one of said links and that of said two units to which it is pivoted for resiliently urging said links toward symmetrical positions with respect to said longitudinal middle plane, the respective axes about which the upper parts of said links are pivoted to said bolster unit being at a distance from each other smaller than the distance between the respective axes about which said links are pivoted to said frame unit.
  • a truck according to claim 5 in which the angle made by each of said links with the vertical rangesfrom 4 to 10 in the state of rest.
  • a truck according to claim 5 further including resilient abutment means carried bysaid frame and arranged to cooperate with said bolster to prevent either of said links from pivoting outwardly beyond the position where it is vertical.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
US742886A 1957-06-18 1958-06-18 Railway trucks and similar carriages Expired - Lifetime US2981207A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1178545T 1957-06-18

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US2981207A true US2981207A (en) 1961-04-25

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US742886A Expired - Lifetime US2981207A (en) 1957-06-18 1958-06-18 Railway trucks and similar carriages

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US (1) US2981207A (fr)
CH (1) CH352700A (fr)
FR (1) FR1178545A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115100A (en) * 1958-11-19 1963-12-24 Cons Foundries And Mfg Corp Railway auxiliary truck
US3191551A (en) * 1962-06-06 1965-06-29 Metalastik Ltd Railway vehicles
US3208402A (en) * 1962-10-31 1965-09-28 Sidney H Bingham Railroad and rapid transit car and undercarriage suspension system
US3818841A (en) * 1970-08-28 1974-06-25 Luxembourg Brev Participations Railway car roll stabilizing bogie
WO1997023375A3 (fr) * 1995-12-22 1997-09-04 Newag Gmbh & Co Kg Bogie de vehicule ferroviaire a deux essieux
EP3225496A1 (fr) * 2016-03-29 2017-10-04 Unac Bras d'essieu pour essieu ferroviaire, essieu ferroviaire et vehicule ferroviaire comprenant un tel bras d'essieu
WO2020115778A1 (fr) * 2018-12-06 2020-06-11 Ab Consulting S.A.S. Di Andrea Bracciali & C. Bogie ferroviaire à deux essieux

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2194792A (en) * 1938-05-21 1940-03-26 Henry A Herndon Shock absorber
US2271195A (en) * 1940-02-20 1942-01-27 American Car & Foundry Co Mine or similar car
US2630079A (en) * 1946-10-19 1953-03-03 American Steel Foundries Car truck
US2638058A (en) * 1948-07-09 1953-05-12 Clark Equipment Co Rail car truck
US2720847A (en) * 1949-11-21 1955-10-18 Hedin Erik Bogies for railway cars
US2730048A (en) * 1952-06-12 1956-01-10 American Steel Foundries Car truck

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2194792A (en) * 1938-05-21 1940-03-26 Henry A Herndon Shock absorber
US2271195A (en) * 1940-02-20 1942-01-27 American Car & Foundry Co Mine or similar car
US2630079A (en) * 1946-10-19 1953-03-03 American Steel Foundries Car truck
US2638058A (en) * 1948-07-09 1953-05-12 Clark Equipment Co Rail car truck
US2720847A (en) * 1949-11-21 1955-10-18 Hedin Erik Bogies for railway cars
US2730048A (en) * 1952-06-12 1956-01-10 American Steel Foundries Car truck

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115100A (en) * 1958-11-19 1963-12-24 Cons Foundries And Mfg Corp Railway auxiliary truck
US3191551A (en) * 1962-06-06 1965-06-29 Metalastik Ltd Railway vehicles
US3208402A (en) * 1962-10-31 1965-09-28 Sidney H Bingham Railroad and rapid transit car and undercarriage suspension system
US3818841A (en) * 1970-08-28 1974-06-25 Luxembourg Brev Participations Railway car roll stabilizing bogie
WO1997023375A3 (fr) * 1995-12-22 1997-09-04 Newag Gmbh & Co Kg Bogie de vehicule ferroviaire a deux essieux
US6098551A (en) * 1995-12-22 2000-08-08 Newag Gmbh & Co. Kg Twin-axle rail vehicle bogie
EP3225496A1 (fr) * 2016-03-29 2017-10-04 Unac Bras d'essieu pour essieu ferroviaire, essieu ferroviaire et vehicule ferroviaire comprenant un tel bras d'essieu
FR3049552A1 (fr) * 2016-03-29 2017-10-06 Unac Bras d’essieu pour essieu ferroviaire, essieu ferroviaire et vehicule ferroviaire comprenant un tel bras d’essieu.
WO2020115778A1 (fr) * 2018-12-06 2020-06-11 Ab Consulting S.A.S. Di Andrea Bracciali & C. Bogie ferroviaire à deux essieux

Also Published As

Publication number Publication date
CH352700A (fr) 1961-03-15
FR1178545A (fr) 1959-05-12

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