CA1302529C - Reverse current device for railway vehicles - Google Patents
Reverse current device for railway vehiclesInfo
- Publication number
- CA1302529C CA1302529C CA000570125A CA570125A CA1302529C CA 1302529 C CA1302529 C CA 1302529C CA 000570125 A CA000570125 A CA 000570125A CA 570125 A CA570125 A CA 570125A CA 1302529 C CA1302529 C CA 1302529C
- Authority
- CA
- Canada
- Prior art keywords
- casing
- edge
- spring
- reverse current
- brush
- 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
Links
- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 claims abstract description 3
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 229920002994 synthetic fiber Polymers 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000000875 corresponding effect Effects 0.000 claims 2
- 241000928106 Alain Species 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000135164 Timea Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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
- B61F15/00—Axle-boxes
- B61F15/20—Details
- B61F15/28—Axle-boxes modified to ensure electrical conductivity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Elimination Of Static Electricity (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
PATENT APPLICATION
entitled: Reverse current device for railway vehicles in the name of: Alain DUMONT
assigned to: FERRAZ
ABSTRACT OF THE DISCLOSURE
This invention relates to a reverse current device for railway vehicles, in which the spring associated with each brush is fixed on a clip provided with reinforcements which, at one of their ends, comprise a hooking flange, whilst the opposite end is sectioned to abut against a projection of the casing. A plate serves as stop for a nose element of the brush, with a view to limiting slide thereof under the effect of wear.
entitled: Reverse current device for railway vehicles in the name of: Alain DUMONT
assigned to: FERRAZ
ABSTRACT OF THE DISCLOSURE
This invention relates to a reverse current device for railway vehicles, in which the spring associated with each brush is fixed on a clip provided with reinforcements which, at one of their ends, comprise a hooking flange, whilst the opposite end is sectioned to abut against a projection of the casing. A plate serves as stop for a nose element of the brush, with a view to limiting slide thereof under the effect of wear.
Description
~3~
The present invention relates to reverse current devices used in the railway stock industry with a view to ensuring transmission of the electrical cur-rent be~ween the chassis of the vehicles and the rails.
It is known that the devices of the type in question most often comprise an openable casing of circular section which is fixed on the chassis of the vehicle in question and which contains three 10 junction brushes associated with springs or other elastic means which tend to apply them permanently against a rotating collector member rendered fast with the hub oE one of the wheels. It suffices under these conditions to connect each of the brushes to 15 any element of the chassis to obtain the electrical junction of the latter with the rails on which the wheels bear.
It goes without saying that these reverse current devices must present a very robust construc-tion to withstand the vibrations and shocks to whichthey are subjected during circulation of the vehicle, due to their location at the level of the wheels.
It will be observed that this location renders them particularly vulnerable to the projection of water and to the res~ltant corrosion. The brushes wear out particularly rapidly and replacement thereof must not necessitate complicated and expensive opera-tions.
It is an object of the present invention to 3~ overcome all the problems set forth hereinabove.
The reverse current device according to the invention is principally noteworthy in that each of the pressure springs is secured to its guiding sheath by means of a clip which comprises, on either side of a flat central part of which one end forms ~3~,S%~
a point of anchoring for said spring, two projecting reinforcements of which one end is bent twice at right angles to determine a flange adapted to hook against the corresponding edge of two projections 5 or ribs of the casing, whilst the opposite end of each of said reinforcements is shaped so as to define a hook arranged to abut against the opposite edge of the said projections by momentary elastic deforma-tion of the opening of said hook.
According to a preferred embodiment of the preceding arrangement, the free end of t~e pressure spring is secured against the clip by means of screws or rivets and a bearing plate of arcuate section, which is arranged to form stop Eor a lateral nose 15element provided on the brush, thus limiting the displacement of the latter in its sheath under the effect of wear.
The invention will be more readily understood on reading the following description with referenc~
20to the accompanying drawings, in which:
Fig. 1 is a view in elevation of a reverse current device according to the invention, the cover of the casing having been partially torn away.
Fig. 2 is a diametral section along plane 25II-II of Fig. 1.
Fig. 3 is a view in perspective showing, in the dismounted position, one of the securing clips and the elements associated therewith.
Fig. 4 is a section showing this clip in the 30mounted position.
Referring now to the drawings, the device shown in FigsO 1 and 2 comprises a casing formed by the assembly, with the aid of screws such as 1, of a cage 2 of circular section and a cover 3. It 35should be observed that the annular edge 2a (Fig.
~3~S~
The present invention relates to reverse current devices used in the railway stock industry with a view to ensuring transmission of the electrical cur-rent be~ween the chassis of the vehicles and the rails.
It is known that the devices of the type in question most often comprise an openable casing of circular section which is fixed on the chassis of the vehicle in question and which contains three 10 junction brushes associated with springs or other elastic means which tend to apply them permanently against a rotating collector member rendered fast with the hub oE one of the wheels. It suffices under these conditions to connect each of the brushes to 15 any element of the chassis to obtain the electrical junction of the latter with the rails on which the wheels bear.
It goes without saying that these reverse current devices must present a very robust construc-tion to withstand the vibrations and shocks to whichthey are subjected during circulation of the vehicle, due to their location at the level of the wheels.
It will be observed that this location renders them particularly vulnerable to the projection of water and to the res~ltant corrosion. The brushes wear out particularly rapidly and replacement thereof must not necessitate complicated and expensive opera-tions.
It is an object of the present invention to 3~ overcome all the problems set forth hereinabove.
The reverse current device according to the invention is principally noteworthy in that each of the pressure springs is secured to its guiding sheath by means of a clip which comprises, on either side of a flat central part of which one end forms ~3~,S%~
a point of anchoring for said spring, two projecting reinforcements of which one end is bent twice at right angles to determine a flange adapted to hook against the corresponding edge of two projections 5 or ribs of the casing, whilst the opposite end of each of said reinforcements is shaped so as to define a hook arranged to abut against the opposite edge of the said projections by momentary elastic deforma-tion of the opening of said hook.
According to a preferred embodiment of the preceding arrangement, the free end of t~e pressure spring is secured against the clip by means of screws or rivets and a bearing plate of arcuate section, which is arranged to form stop Eor a lateral nose 15element provided on the brush, thus limiting the displacement of the latter in its sheath under the effect of wear.
The invention will be more readily understood on reading the following description with referenc~
20to the accompanying drawings, in which:
Fig. 1 is a view in elevation of a reverse current device according to the invention, the cover of the casing having been partially torn away.
Fig. 2 is a diametral section along plane 25II-II of Fig. 1.
Fig. 3 is a view in perspective showing, in the dismounted position, one of the securing clips and the elements associated therewith.
Fig. 4 is a section showing this clip in the 30mounted position.
Referring now to the drawings, the device shown in FigsO 1 and 2 comprises a casing formed by the assembly, with the aid of screws such as 1, of a cage 2 of circular section and a cover 3. It 35should be observed that the annular edge 2a (Fig.
~3~S~
2~ of the cage 2 is sandwiched between two rings 4 and 5 made of synthetic material and sectioned so as to be connected to each other by high-frequency welding; this particular arrangement ensures protec-tion and isolation of the edge 2a, at the same timeas it allows three insulated channels 6 to be made, adapted to receive the screws for securing the casing 2-3 on the chassis of the rolling vehicle.
The cage 2 is shaped so as to define a certain 10 number of horizontal sheaths 2b oriented parallel to one another and open at their two ends. In the embodiment envisaged, these sheaths 2b are three in number and it will be noted that they are disposed at about 60 with respect to one another so as to 15 lie, all three, in the upper part of the casing 2-3.
In this way, the possible flow of water and pollution on a lower sheath is avoided, which might hinder slide of the corresponding brush.
In each sheath 2b is slidably mounted a brush 20 7 of which one of the ends is adapted to bear against a collector disc 8 (Fig. 2) fast with one of the wheels of the railway vehicle, whilst the opposite end receives the elastic pressure of a spring 9, formed in manner known per se by a wound metal leaf.
The clip 10 shown in Figs. 3 and 4 is used for securing the spring 9 associated with each brush 7. This clip 10, made of an elastically deformable metal, comprises a flat central part 10a bordered by two reinforcements 10b which project on that face 30 of the clip turned towards the brush 7. One of the ends of this central part 10a is pierced for the passage of two rivets 11 which traverse the end of the spring 9 to be secured an~ a retaining plate 12~ It will be observed that the reinforcements 10b 35 border the end of the spring 9 which is thus main-s~
tained laterally.
The end of each reinforcement which faces~he brush 7 is bent twice at right angles to form a flange 10c shaped so as to hook against the end face or edge 13a of one or the other of two parallel projections or ribs 13 of the cage 2. Furthermore, the opposite end o~ the reinforcements 10b is curved and rolled in order to determine a hook 10d which, after en~agement of the edges 10c against the faces 10 13a, is capable, by momentary elastic deformation of its opening, of abutting against the opposite faces or edges 13b of the projections 13.
The clip is then firmly immobilized in the casing 2-3 and thus ensures perfect securing of the 15 spring 9 associated with the brush 7 envisaged.
It wil]. be noted that the plate 12 presents a curved section such that, as shown in Fig. 4, its free edge projects in front of the lateral reinforce-ments 10b of the clip 10 and is consequently disposed 20 on the path of a nose element 7a projecting from the brush 7. It will be understood that the coopera-tion of this nose element 7a and of the plate 12 limits the slide of the brush 7 which occurs during wear thereof, avoiding any risk of damage due to 25 exaggerated wear.
Each brush 7 is connected by conductors (not shown) to a terminal 14 screwed in the corresponding sheath 2b and the cage 2 bears a common terminal 5 adapted to be connected by a plaiting to the chassis 30 of the railway vehicle. Optimum connection of this chassis to the rails via the reverse current device is thus ensured.
It goes without saying that the number of brushes may vary to a certain extent. I~- must, more-35 over, be understood that the foregoing description ~3~
has been given only hy way of example and that it in no way limits the domain of the invention which would not he exceeded by replacing the details of execution described by any other equivalents.
The cage 2 is shaped so as to define a certain 10 number of horizontal sheaths 2b oriented parallel to one another and open at their two ends. In the embodiment envisaged, these sheaths 2b are three in number and it will be noted that they are disposed at about 60 with respect to one another so as to 15 lie, all three, in the upper part of the casing 2-3.
In this way, the possible flow of water and pollution on a lower sheath is avoided, which might hinder slide of the corresponding brush.
In each sheath 2b is slidably mounted a brush 20 7 of which one of the ends is adapted to bear against a collector disc 8 (Fig. 2) fast with one of the wheels of the railway vehicle, whilst the opposite end receives the elastic pressure of a spring 9, formed in manner known per se by a wound metal leaf.
The clip 10 shown in Figs. 3 and 4 is used for securing the spring 9 associated with each brush 7. This clip 10, made of an elastically deformable metal, comprises a flat central part 10a bordered by two reinforcements 10b which project on that face 30 of the clip turned towards the brush 7. One of the ends of this central part 10a is pierced for the passage of two rivets 11 which traverse the end of the spring 9 to be secured an~ a retaining plate 12~ It will be observed that the reinforcements 10b 35 border the end of the spring 9 which is thus main-s~
tained laterally.
The end of each reinforcement which faces~he brush 7 is bent twice at right angles to form a flange 10c shaped so as to hook against the end face or edge 13a of one or the other of two parallel projections or ribs 13 of the cage 2. Furthermore, the opposite end o~ the reinforcements 10b is curved and rolled in order to determine a hook 10d which, after en~agement of the edges 10c against the faces 10 13a, is capable, by momentary elastic deformation of its opening, of abutting against the opposite faces or edges 13b of the projections 13.
The clip is then firmly immobilized in the casing 2-3 and thus ensures perfect securing of the 15 spring 9 associated with the brush 7 envisaged.
It wil]. be noted that the plate 12 presents a curved section such that, as shown in Fig. 4, its free edge projects in front of the lateral reinforce-ments 10b of the clip 10 and is consequently disposed 20 on the path of a nose element 7a projecting from the brush 7. It will be understood that the coopera-tion of this nose element 7a and of the plate 12 limits the slide of the brush 7 which occurs during wear thereof, avoiding any risk of damage due to 25 exaggerated wear.
Each brush 7 is connected by conductors (not shown) to a terminal 14 screwed in the corresponding sheath 2b and the cage 2 bears a common terminal 5 adapted to be connected by a plaiting to the chassis 30 of the railway vehicle. Optimum connection of this chassis to the rails via the reverse current device is thus ensured.
It goes without saying that the number of brushes may vary to a certain extent. I~- must, more-35 over, be understood that the foregoing description ~3~
has been given only hy way of example and that it in no way limits the domain of the invention which would not he exceeded by replacing the details of execution described by any other equivalents.
Claims (5)
1. In a reverse current device for railway ve-hicles, of the type comprising an openable casing containing brushes associated with pressure springs which tend to maintain them applied against a rotating collector, each spring is secured by means of a clip which com-prises, on either side of a flat central part of which one end forms a point of anchoring for said spring, two projecting reinforcements of which one end is bent twice at right angles to determine a flange adapted to hook against the corresponding edge of two projections of the casing, whilst the opposite end of each of said reinforcements is shaped so as to define a hook arranged to abut against the opposite edge of the said projections by momentary elastic deformation of the opening of said hook.
2. The device of Claim 1, wherein the free end of the spring is secured on the clip by means of screws or rivets and a bearing plate of arcuate sec-tion, which is sectioned so that its free edge forms stop for a lateral nose element provided on the corres-ponding brush, thus limiting the displacement of the latter under the effect of wear.
3. The device of Claim 1, wherein the sheathes which slidably contain the brushes are disposed in that part of the casing facing upwardly.
4. The device of Claim 1, wherein the edge, of circular section, of the casing cage is sandwiched between two rings made of synthetic material which are assembled together by high-frequency welding.
5. The device of Claim 4, wherein the insulating rings define, opposite a series of openings made in the edge of the cage, channels for the passage of the screws intended for securing the casing against the chassis of the railway vehicle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8708899A FR2616731B1 (en) | 1987-06-22 | 1987-06-22 | CURRENT RETURN DEVICE FOR VEHICLES ON RAILS |
| FR87.08899 | 1987-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1302529C true CA1302529C (en) | 1992-06-02 |
Family
ID=9352458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000570125A Expired - Lifetime CA1302529C (en) | 1987-06-22 | 1988-06-22 | Reverse current device for railway vehicles |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0297002B1 (en) |
| JP (1) | JP2634862B2 (en) |
| CA (1) | CA1302529C (en) |
| DE (1) | DE3861746D1 (en) |
| ES (1) | ES2019997B3 (en) |
| FR (1) | FR2616731B1 (en) |
| IN (1) | IN169388B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1019652B (en) * | 1990-07-07 | 1992-12-30 | 李石生 | Tyre with backswept elastic supporting bodies |
| DE4127336A1 (en) * | 1991-08-19 | 1993-02-25 | Schunk Metall & Kunststoff | HOLDING DEVICE FOR BRUSH VEHICLES USED AS RE-CURRENT AND / OR EARTHING CONTACT BRUSHES AND METHOD FOR PRODUCING SUCH A HOLDING DEVICE |
| IT1272642B (en) * | 1993-09-16 | 1997-06-26 | Risomesa Spa | CURRENT RETURN GROUP FOR RAILWAY TRADITION AND RELATED BRUSHES |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1547620A (en) * | 1967-10-04 | 1968-11-29 | Ferraz & Cie Lucien | Improvements in current return devices for electric rail vehicles |
| FR2248186B1 (en) * | 1973-10-23 | 1976-06-18 | Ferraz & Cie Lucien | |
| JPS51133913U (en) * | 1975-04-21 | 1976-10-28 | ||
| JPS594819U (en) * | 1982-07-01 | 1984-01-12 | 日本サ−ボ株式会社 | bearing |
| JPS61194823U (en) * | 1985-05-28 | 1986-12-04 |
-
1987
- 1987-06-22 FR FR8708899A patent/FR2616731B1/en not_active Expired
-
1988
- 1988-06-21 JP JP63153363A patent/JP2634862B2/en not_active Expired - Lifetime
- 1988-06-22 DE DE8888420213T patent/DE3861746D1/en not_active Expired - Lifetime
- 1988-06-22 EP EP19880420213 patent/EP0297002B1/en not_active Expired - Lifetime
- 1988-06-22 ES ES88420213T patent/ES2019997B3/en not_active Expired - Lifetime
- 1988-06-22 CA CA000570125A patent/CA1302529C/en not_active Expired - Lifetime
- 1988-07-04 IN IN549/CAL/88A patent/IN169388B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JP2634862B2 (en) | 1997-07-30 |
| FR2616731B1 (en) | 1989-11-17 |
| DE3861746D1 (en) | 1991-03-14 |
| EP0297002A1 (en) | 1988-12-28 |
| EP0297002B1 (en) | 1991-02-06 |
| JPH0197101A (en) | 1989-04-14 |
| ES2019997B3 (en) | 1991-07-16 |
| IN169388B (en) | 1991-10-05 |
| FR2616731A1 (en) | 1988-12-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |