US3828692A - System for transmitting traction and braking forces in a rail vehicle - Google Patents

System for transmitting traction and braking forces in a rail vehicle Download PDF

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Publication number
US3828692A
US3828692A US00291933A US29193372A US3828692A US 3828692 A US3828692 A US 3828692A US 00291933 A US00291933 A US 00291933A US 29193372 A US29193372 A US 29193372A US 3828692 A US3828692 A US 3828692A
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United States
Prior art keywords
running gear
coupling means
pair
combination
bar
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Expired - Lifetime
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US00291933A
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English (en)
Inventor
E Kreissig
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Schweizerische Lokomotiv und Maschinenfabrik AG (SLM)
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Schweizerische Lokomotiv und Maschinenfabrik AG (SLM)
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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
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/22—Guiding of the vehicle underframes with respect to the bogies
    • B61F5/24—Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes

Definitions

  • linkage includes a pair of draw bars which are pivotally connected to either the body or running gear and are longitudinally inclined to the horizontal. These bars are interconnected together at their opposite ends by a coupling means.
  • the coupling means can be in the form of an assembly including a connecting rod and a pair of levers; a connecting rod, guide arm and a pair of levers; a single pivotally mounted connecting rod; or a pair of fluid pressure cylinders which interact with pistons on the ends of the draw bars.
  • This invention relates to a system for transmitting traction and braking forces in a rail vehicle. More par ticularly, this invention relates to a linkage for accurately transmitting traction and braking forces in a rail vehicle.
  • Various systems have been known for transmitting traction and braking forces in a rail vehicle between a body of the vehicle and a running gear of the vehicle which supports the body.
  • One known system utilizes a linkage having two consecutively disposed drawbars one to the body and the other to the running gear.
  • Each drawbar is subdivided into two parts which are interconnected by a pivot having a transverse pivot axis and which can pivot relative to one another only in the vertical plane.
  • the horizontal forces can be transmitted to the running gear via the drawbars in such a way as to cause jerking.
  • the invention provides a rail vehicle having a body and a running gear truck or chassis which supports the body with a linkage between the body and running gear.
  • the linkage includes a pair of draw bars which are each inclined towards each other longitudinally to a horizontal plane while being pivotally connected at one end to the body or running gear as well as a coupling means which interconnects the draw bars together at the opposite ends.
  • the coupling means is connected to the other of the body or running gear.
  • the coupling means includes a pair of levers, such as bell cranks or bent levers, each having a pair of arms and a connecting rod.
  • Each lever is pivotally mounted to the body or running gear, as the case may be, and is pivotally connected via one arm to a draw bar and via the other arm to the connecting rod.
  • the arms of the levers which connect to the rod are disposed in parallel relation while the other arms are disposed centrally and symmetrically of the running gear.
  • This coupling means can be connected to the underside of the running gear, resulting in a long draw bar, or to the topside of the running gear, resulting in a shorter draw bar.
  • the draw bars can be located on the longitudinal axis of the running gear or to the sides of the running gear.
  • the coupling means includes a pair of levers, as above, mounted to the same side of the running gear relative to the transverse axis of the running gear as well as a connecting rod interconnecting the levers and a guide arm interconnecting one of the levers with a drawbar.
  • each pair of drawbars are connected to a coupling means similar to the above. Also, the pairs of drawbars are articulated so that one pair acts only in one direction of travel of the rail vehicle while the other pair acts only in the other direction of travel.
  • the coupling means for connecting the drawbars is constituted by a single lever which is pivotably mounted in a horizontal plane about a vertical axis.
  • the coupling means includes fluid pressure cylinders which slidably receive the ends of the drawbars and are interconnected to each other to smooth out veritcal springing of the rail vehicle.
  • a particular advantage of the system according to the invention is that the linkage and coupling means can be positioned in a way best suited to the restricted space available in running gear so that, for instance, all the space in the center of the running gear is available'to receive various items of traction equipment.
  • the coupling means has at least one lever pivoted to the running gear or to the body is distinguished by great simplicity such that it can be produced and, more particularly, fitted to a rail vehicle at very reduced cost.
  • the drawbars can each be disposed in virtually any arbitrarily selected zone of vehicle width so that forces can be transmitted positively independently of the height of the coupling device.
  • FIG. 1 illustrates an elevational view of a rail vehicle incorporating a linkage according to the invention therein;
  • FIG. 2 illustrates a part plan view of the linkage of FIG. 1;
  • FIG. 3 illustrates an elevational view of a rail vehicle incorporating a modified linkage similar to that shown in FIGS. 1 and 2;
  • FIG. 4 illustrates a plan view of the linkage of FIG.
  • FIG. 5 illustrates a view similar to FIG. 1 of a linkage wherein a pair of draw bars are mounted on the longitu-
  • FIG. 9 illustrates a view similar to FIG. 7 wherein the linkage is connected to the top of the running gear;
  • FIG. 10 illustrates a plan view of the linkage of FIG. 9
  • FIG. 11 illustrates a view similar to FIG. 1 wherein a pair of linkages are connected between a vehicle body and a running gear;
  • FIG. 12 illustrates a plan view of the linkage of FIG. 11
  • FIG. 13 illustrates a view of a modified linkage similar to that of FIGS. 3 and 4;
  • FIG. 14 illustrates a plan view of the linkage of FIG. 13
  • FIG. 15 illustrates a view of a linkage similar to that shown in FIGS. 11 and 12;
  • FIG. 16 illustrates a plan view of the linkage of FIG. 15
  • FIG. 17 illustrates a view similar to FIG. 1 of a linkage utilizing a single horizontally disposed lever
  • FIG. 18 illustrates a plan view of the linkage of FIG. 17
  • FIG. 19 illustrates a view similar to FIG. 1 of a linkage utilizing a fluid pressure cylinder
  • FIG. 20 illustrates a plan view of the linkage of FIG. 19.
  • a rail-vehicle body 1 is supported on a running gear or chassis 2 by way of two springs 9, only one of which can be seen.
  • the springs 9 are disposed on spring carriers 10 which are rockingly suspended at the sides of the frame of the running gear 2.
  • the running gear 2 comprises two sets of wheels 3, 4 each of which are journalled in two bearings 5 rockably mounted on the running-gear frame. Disposed on each bearing 5 are two resilient support members 6 on which the running gear frame rests.
  • each wheel set 3, 4 is driven by a motor 7 through a suitable known gearing 8.
  • Each motor 7 has a housing from which various brackets project to mount the motor 7 in the running gear frame.
  • One bracket 50 projects from one side while two brackets 51 project from an opposite side.
  • the brackets 50 of the two motors 7 extend towards one another and are screwed together and the brackets SI are screwed to the running-gear frame.
  • the motor housings are each connected via a connecting passage 52 to the deliveries of a cooling fan (not shown).
  • each of the wheels of the sets 3, 4 is fitted with clasp brakes 53 whose shoes 54, 54' are operated by way of linkage 56 and of a brake cylinder 55 disposed on the running-gear frame.
  • the brake cylinders 55 are connected in known manner to a control facility (not shown).
  • the body 1 and running gear 2 are interconnected by a linkage comprising two drawbars or traction rods ll, 12 which extend lengthwise of the running-gear frame on both sides thereof.
  • the two drawbars ll, 12 are each connected, for pivoting around a horizontal axis, to two dependent members 13 on the bottom of the body 1; as considered in the direction of travel, one pair of members 13 is in front of the running gear and the other pair is behind the running gear.
  • the two bottom ends of the bars 11, 12 are interconnected by a coupling means 14 which is positioned horizontally a short distance above the ground and which comprises two double-arm levers l5, 16 so interconnected by a transverse connecting rod 17 as to be pivotable to the same hand of rotation.
  • the two levers l5, 16 are bell cranks or bent levers which are pivoted to the running gear 2, i.e., in the construction shown, to the undersides of the motor housings via two vertical pins 18 which are arranged centrally and symmetrically in relation to the running gear 2.
  • the arms of the bell crank 15 include an obtuse angle a and the arms of the bell crank 16 include an acute angle B, the angle a and B being supplementary, i.e., a B
  • the bell cranks 15, 16 have parallel arms, the rod 17 being pivoted to those two arms of the levers 15, 16 which are near one another.
  • the draw bars 11, 12 are each so connected to the ends of the laterally projecting arms of the bell cranks l5, 16 as to be able to make appropriate transverse pivoting motions when the body 1 pivots relatively to the running gear 2, as when the vehicle negotiates curves.
  • the draw bars ll, 12 and the coupling means 14 provide a kinetically accurate transmission of traction forces outside the space between the motors. Thus, this space is available to receive the various parts which have to be placed in the running gear 2.
  • the corotating bell cranks 15, 16 provide smooth equilization of the horizontal components of the traction forces.
  • FIGS. 3 and 4 the system shown is of similar construction to the system shown in FIGS. 1 and 2 except that two draw bars 11, 12 and a coupling means 14 interconnecting the draw bars ll, 12' are disposed between the running gear 2 and the bottom of the body 1.
  • the bottom of the body 1 is higher than in the embodiment shown in FIGS. 1 and 2.
  • the bell-crank pivot pins 18 are disposed centrally and symmetrically on the top of the running-gear frame.
  • the draw bars 11, 12 are disposed between the wheels near the running-gear longitudinal center plane L.
  • the pairs of dependent members 13 are each secured to a part of the body 1 at the same level as the running-gear frame. So that they may both pivot to the same hand, the bell-cranks 15, 16 are the other way round as compared with the embodiment of FIGS. 1 and 2. Consequently, as shown in FIG. 6, the rod 17 crosses that arm of bell-crank 16 which is connected to bar 11. correspondingly, rod 17 is pivotally connected to the undersides of the bell cranks 15, 16.
  • This construction is of use more particularly for rail vehicles having body parts which come down low nearv the running gear 2.
  • the bars 1 l, 12 are interconnected by a coupling means 19 disposed horizontally on the underside of the running-gear frame.
  • the coupling means 19 comprises two levers (bell-cranks or bent levers) 21, 21 which are interconnected by a transverse rod 20 and whose arm are at 90 to one another.
  • the coupling means 19 also comprises a longitudinally extending connecting rod 22 and a guide arm 23.
  • the two bell-cranks 21, 21 are mounted near the wheel set 4 on vertical pins 18 which are disposed on the same side of the running gear symmetrical of the running-gear longitudinal center plane L and which are disposed on brackets on the underside of the running-gear frame. Adjacent arms of the levers 21, 21 are parallel to one another and coupled together for pivoting in the same hand by the connecting rod 20, the rod 20 extending parallel to the wheel axles. The other arms of the levers 21, 21' project beyond the sides of the running gear 2.
  • Draw bar 12 is pivoted to the arm of lever 21 and rod 22 to the corresponding arm of lever 21'; the other end of rod 22 is bifurcated and piv oted, together with the end of bar 11, to guide arm 23.
  • the guide arm 23 is mounted on a vertical pin 18 disposed on the underside of the running-gear frame.
  • the draw bars 11, 12 are pivoted to brackets 29 on the body 1 and interconnected by a coupling means 24 similar to the one used in the embodiment of FIGS. 7 and 8.
  • the rod 20 interconnects two levers 25, 25, each having two arms at rightangles to one another, the arms being disposed in spaced-apart vertical relationship on a common pivot 26.
  • the levers 25, 25' are mounted by way of theirvertical pivots 26 in the running-gear frame side bearers.
  • Those arms of the levers 25, 25 which are interconnected by the rod 20 are disposed above the running-gear frame, while those arms of the levers 25, 25' which are connected to the rod 22 or bar 12 are disposed below the running gear frame.
  • the arrangement of the parts which form the linkage 24 in planes disposed one above another enable traction and braking forces to be transmitted substantially independently of running-gear construction.
  • FIGS. 11 and 12 two pairs of draw bars 27, 27' and 28, 28' are pivoted to the vehicle body 1.
  • the draw bar pair 27, 27 is connected to the back end of the running-gear frame while the draw bar pair 28, 28 is connected to the front end of the frame.
  • Each bar pair is interconnected by a coupling means 31 which, as in the embodiment of FIGS. 7 and 8, comprises two bell-cranks 21, 21' pivoted to the underside of the vehicle frame, plus a connecting rod 20.
  • the draw bar ends connected to the levers 21, 21 are formed with slots 32, 33 (FIG. 11) each so engaged by a guide pin on the corresponding lever arm that the guide pin and the draw bar can moverelative to one another lengthwise.
  • the arrangement of the linkage interconnecting the body 1 and running gear 2 is basically the reverse of the arrangement shown in FIGS. 3 and 4.
  • Each of the draw bars 11, 12 is pivoted to a horizontal pin 34 projecting from the running-gear frame and to one of the two levers 15, 16.
  • Each lever l5, 16 is mounted on a vertical pin 18 disposed at the bottom of the body 1. This system operates very similarly to the system shown in FIGS. 3 and 4. 1
  • the arrangement of the linkage interconnecting the body 1 and running gear 2 is basically the reverse of that shown in FIGS. 11 and 12, except that in FIGS. 15 and 16 each of draw bars 27, 27; 28, 28' is pivoted to a pin 34 on the runninggear frame while each of the levers 21, 21 of the coupling means 31 which interconnects the other ends of each draw bar pair is mounted on a pin 18 disposed on the underside of the vehicle body 1.
  • the body 1 is mounted on running gear 35 whose side bearers are interconnected by a transverse cross bearer 36 disposed near the transverse center plane E.
  • the manner in which the body 1 is borne by the running gear 35 is not shown.
  • the motors 7 are screwed by means of brackets 51 to the edge bearers of the running-gear frame and at their other ends are suspended on one each of rockers 37 pivoted to the cross-bearer 36.
  • Each draw bar 11, 12 is pivoted on a horizontal pivot 38 disposed on the body 1.
  • a coupling means 39 is embodied by a horizontal inclined two-armed lever (equalizer) 40, and the bottom ends of the bars 11, 12 are pivoted to the ends of the lever 40.
  • the lever 40 is mounted by means of a vertical pivot 41 in a bearing 42 disposed on the crossbearer 36.
  • two draw bars 43, 44 are pivoted to the two side bearers of the running gear 2 by way of the horizontal pins 34, and a piston 45 is secured to the free end of each bar 43, 44.
  • the two pistons 45 are guided in seal-tight manner in two fluid pressure cylinders 46, 47 of a hydraulic coupling means 48, the cylinders 46, 47 being pivoted to dependent members 13 on the bottom of the body 1.
  • Each cylinder 46, 47 is closed by an end member through which the associated bar 43, 44 extends in seal-tight manner.
  • each of the two cylinders 46, 47 are separated by the pistons 45 and interconnected in crossover-fashion by way of lines 49a, 49b i.e., the working chamber above piston 45 of one cylinder 46 or 47 is connected to the working chamber below the piston 45 of the other cylinder 47, 46, respectively.
  • the pressure cylinders can be pivoted to the running gear and the draw bars to the vehicle body.
  • a pneumatic coupling means or a coupling means actuated in some other way, possibly by a servomotor, can be used.
  • a system comprising a skew coupling linkage having two bent levers each disposed in a plane corresponding to the inclination of the associated draw bar and being mounted for pivoting on a pin disposed perpendicularly to the plane of the draw bar.
  • an inclined connecting rod must be used to interconnect the two adjacent arms of the bent levers. This feature reduces stressing of the bent levers by vertical components of the forces introduced via the draw bars.
  • coupling means interconnecting said draw bars together, each said bar being connected at an opposite end to said one end to said coupling means and said coupling means being connected to the other of said body and said running gear.
  • said coupling means includes at least one lever pivotally mounted on said other of said body and said running gear.
  • said coupling means includes a pair of bell cranks. each respective bell crank being connected to a respective one of said draw bars and pivotally connected to said other of said body and said running gear; and a rod interconnecting said bell cranks for pivoting in the same direction of rotation.
  • each bell crank has a pair of cams, one of said arms being connected to said rod and the other of said arms being connected to a respective draw bar; said arms of said bell cranks connected to said rod being parallel to each other and said other arms being disposed centrally and symmetrically to said running gear.
  • said coupling means includes a pair of pistons, each respective piston being connected to a respective draw bar, and a pair of interconnected fluid pressure cylinders, each respective piston being slidably mounted in a respective cylinder.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)
US00291933A 1971-09-24 1972-09-25 System for transmitting traction and braking forces in a rail vehicle Expired - Lifetime US3828692A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1396771A CH542743A (de) 1971-09-24 1971-09-24 Vorrichtung zum Übertragen von Zug- und Bremskräften an einem Schienenfahrzeug

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US3828692A true US3828692A (en) 1974-08-13

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US00291933A Expired - Lifetime US3828692A (en) 1971-09-24 1972-09-25 System for transmitting traction and braking forces in a rail vehicle

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US (1) US3828692A (enrdf_load_stackoverflow)
JP (1) JPS4840109A (enrdf_load_stackoverflow)
CH (1) CH542743A (enrdf_load_stackoverflow)
DE (1) DE2149126B2 (enrdf_load_stackoverflow)
FR (1) FR2153925A5 (enrdf_load_stackoverflow)
NL (1) NL7114306A (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167906A (en) * 1976-07-23 1979-09-18 Schweizerische Lokomotiv- Und Maschinenfabrik Railway vehicle bogies
US4175494A (en) * 1974-07-25 1979-11-27 Schweizerische Lokomotiv-Und Maschinenfabrik Fluid pressure actuator interconnected bogies
US4241666A (en) * 1976-08-19 1980-12-30 Asea Aktiebolag Railway car electric traction motor air cooling system
US4273055A (en) * 1977-09-20 1981-06-16 Schweizerische Lokomotiv-Und Maschinenfabrik Railway vehicle traction and braking force transmitting system
US4337706A (en) * 1977-11-30 1982-07-06 Schweizerische Lokomotiv Und Maschinenfabrik Railway locomotive
US4411202A (en) * 1979-07-11 1983-10-25 Schweizerische Lokomitiv-Und Maschinenfabrik Rail vehicle
US4485743A (en) * 1982-09-29 1984-12-04 General Motors Corporation High efficiency semi-articulated railway power truck
US4926756A (en) * 1987-07-28 1990-05-22 Utdc Inc. Longitudinal steering linkage for truck with interaxle yokes
AU609502B2 (en) * 1987-07-28 1991-05-02 Utdc Inc. Longitudinal steering linkage for truck with interaxle yokes
US20050183625A1 (en) * 2004-02-23 2005-08-25 Goding David J. High efficiency semi-articulated railway power bogie
US20140261061A1 (en) * 2012-07-10 2014-09-18 Csr Nanjing Puzhen Co., Ltd Flexible direct drive bogie

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH554251A (de) * 1972-07-26 1974-09-30 Schweizerische Lokomotiv Schienenfahrzeug mit einer vorrichtung zum lastausgleich angetriebener achsen der drehgestelle.
DE2833201C3 (de) * 1978-07-27 1982-10-07 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum Übertragen von Zug- und Bremskräften an einem schienengebundenen Triebfahrzeug
CH684075A5 (de) * 1991-05-23 1994-07-15 Sig Schweiz Industrieges Drehgestell.
DE4444540B4 (de) * 1994-06-16 2015-08-06 Josef Nusser Schienenfahrzeug mit Drehvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US205956A (en) * 1878-07-16 Improvement in railway-car trucks
US1138357A (en) * 1911-01-28 1915-05-04 J G Brill Co Car-truck.
US1307326A (en) * 1919-06-17 John heuky thomas
US2199128A (en) * 1938-12-22 1940-04-30 American Brake Co Brake rigging
DE837711C (de) * 1949-02-10 1952-05-02 Roman Liechty Dipl Ing Achssteuereinrichtung fuer die Radachsen von Schienenfahrzeugen mit einem dreiarmigen Verstellhebel
US3528374A (en) * 1967-02-03 1970-09-15 British Railways Board Railway truck resiliently interconnected axle boxes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US205956A (en) * 1878-07-16 Improvement in railway-car trucks
US1307326A (en) * 1919-06-17 John heuky thomas
US1138357A (en) * 1911-01-28 1915-05-04 J G Brill Co Car-truck.
US2199128A (en) * 1938-12-22 1940-04-30 American Brake Co Brake rigging
DE837711C (de) * 1949-02-10 1952-05-02 Roman Liechty Dipl Ing Achssteuereinrichtung fuer die Radachsen von Schienenfahrzeugen mit einem dreiarmigen Verstellhebel
US3528374A (en) * 1967-02-03 1970-09-15 British Railways Board Railway truck resiliently interconnected axle boxes

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4175494A (en) * 1974-07-25 1979-11-27 Schweizerische Lokomotiv-Und Maschinenfabrik Fluid pressure actuator interconnected bogies
US4167906A (en) * 1976-07-23 1979-09-18 Schweizerische Lokomotiv- Und Maschinenfabrik Railway vehicle bogies
US4241666A (en) * 1976-08-19 1980-12-30 Asea Aktiebolag Railway car electric traction motor air cooling system
US4273055A (en) * 1977-09-20 1981-06-16 Schweizerische Lokomotiv-Und Maschinenfabrik Railway vehicle traction and braking force transmitting system
US4337706A (en) * 1977-11-30 1982-07-06 Schweizerische Lokomotiv Und Maschinenfabrik Railway locomotive
US4411202A (en) * 1979-07-11 1983-10-25 Schweizerische Lokomitiv-Und Maschinenfabrik Rail vehicle
US4485743A (en) * 1982-09-29 1984-12-04 General Motors Corporation High efficiency semi-articulated railway power truck
US4926756A (en) * 1987-07-28 1990-05-22 Utdc Inc. Longitudinal steering linkage for truck with interaxle yokes
AU609502B2 (en) * 1987-07-28 1991-05-02 Utdc Inc. Longitudinal steering linkage for truck with interaxle yokes
US20050183625A1 (en) * 2004-02-23 2005-08-25 Goding David J. High efficiency semi-articulated railway power bogie
US20140261061A1 (en) * 2012-07-10 2014-09-18 Csr Nanjing Puzhen Co., Ltd Flexible direct drive bogie
US9352758B2 (en) * 2012-07-10 2016-05-31 Csr Nanjing Puzhen Co., Ltd. Flexible direct drive bogie

Also Published As

Publication number Publication date
DE2149126A1 (de) 1973-04-05
DE2149126B2 (de) 1973-09-20
FR2153925A5 (enrdf_load_stackoverflow) 1973-05-04
NL7114306A (enrdf_load_stackoverflow) 1973-03-27
CH542743A (de) 1973-10-15
JPS4840109A (enrdf_load_stackoverflow) 1973-06-13

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