EP1802485A1

EP1802485A1 - Ground power supply system for electric vehicle

Info

Publication number: EP1802485A1
Application number: EP05805761A
Authority: EP
Inventors: René Donnard
Original assignee: Lohr Industrie SA
Current assignee: Lohr Industrie SA
Priority date: 2004-09-30
Filing date: 2005-09-21
Publication date: 2007-07-04
Also published as: WO2006035139A1; RU2007115611A; FR2875751A1; JP2008514500A; CN101044040B; US20080105509A1; KR20070067106A; CN101044040A; RU2374095C2; JP4824690B2; US7748509B2; KR101166279B1

Abstract

The inventive power supply system (1) comprises a ground placed power supply device (2) provided with at least one linear supply wire (7) connected to a voltage supply, a rail (6) comprising at least one zero reset conductor strip (8) and at least one protective profile in a flat L-shaped position profile masking the conductor wire. Said system also comprises an on-board current sensing device (3) comprising at least one movable sensing subassembly (38) comprising a power sliding contactor (41) and a zero volts sliding contactor (42) which are electrically connected to the vehicle load circuits and used for slidingly contacting the supply wire and the a zero reset conductor strip. Said invention is useful for manufacturers of public transport vehicles and the lines therefor.

Description

Electric ground system for electric vehicles.

The present invention relates to an electrical ground power system for electric vehicles preferably guided by a guide assembly rolling on a guide rail.

-E ^~ l ^~ re ^~~ vxs ^~ e-plus-paxti-cu ±± remeττt-a-ssyseme ^~ power supply by the ground in low continuous voltage.

The targeted electric vehicles are land vehicles for example road but also rail. The invention is particularly adapted to the power supply of a self-guided urban public transport vehicle with electric propulsion, this vehicle being able to be of railway or pneumatic type. The invention is however not limited to this preferred application. This type of vehicle with electric drive or traction is conventionally supplied with electrical energy by overhead cables or catenaries arranged above their lanes. The current trend is, however, for aesthetic or other reasons, to remove these electrified overhead lines and replace them with ground-level or underground power systems. Various ground power systems have been proposed for these vehicles in the prior art. However, all these systems have a number of disadvantages mainly in terms of security. Indeed, these prior systems provide a high voltage power supply including continues that can be extremely dangerous to humans from contact with conductive parts ^v. In addition, with the use of high voltage, an additional risk appears related to the existence of stray currents.

The object of the invention is to provide a perfectly safe ground feeding system.

Another object of the invention is to provide a ground power system whose installation and assembly are simple and fast.

Another object of the invention is to provide an easy maintenance ground power system. To solve this technical problem, the invention provides a ground power system for a land vehicle, movable on a determined path, ground-type power supply by sliding contact with at least one conductive part. This system comprises an electric power supply device disposed on the ground and a current sensing device, embedded on the vehicle and moving with the latter. The electric power supply device according to the invention is placed in an open chute on the top. It comprises at least one linear supply conductor connected to an electrical supply voltage, this at least one conductor being placed in the trough laterally to a rail which carries at least one conducting track of return to zero volts. It further comprises at least one protection profile, which has a general L-shaped lying, surrounding and hiding the linear conductor underneath.

Onboard current sensing device comprises at least one movable collection subassembly carried by a carrier assembly, which circulates in the chute laterally to the rail. This collection subassembly comprises a power scraper intended to come into sliding electrical contact with the supply conductor and a zero-volt scraper intended to come into sliding electrical contact.

With this, you are going to go back to zero-zero, that is. wipers being electrically connected to the user circuits of the vehicle.

Advantageously, the contact between the power wiper and the supply conductor is effected under the protection profile and is surrounded by the return of this protection profile. This at least one linear supply conductor may preferentially be connected to a DC supply voltage.

The ground supply system according to the invention thus ensures perfect safety for pedestrians or other road users.

In addition, the installation and maintenance of this power system are particularly easy.

Advantageously, the system according to the invention may comprise an additional safety device in the event of a problem involving the safety of persons, in the form of a means for separating the at least one subset of sensors that is moving. in the chute allowing extraction in full line of the carrier assembly which is then no longer under tension.

According to a preferred embodiment of the invention, the electrical power supply device may comprise two linear supply conductors each connected to an electrical supply voltage, these two conductors being placed in the trough on either side. a central rail that carries two conductive tracks back to zero volts. It then also includes two protection profiles which have a generally L-shaped coated, each of these protection profiles surrounding and hiding one of the linear conductors placed below.

According to this variant, the device embedded ^~ de-collection-of-current-eompo-r-te-two-subheader Sembia-s- mobile capture carried by a carrier assembly, which circulate in the chute on both other of the central rail, each of these sensing subassemblies comprising a power wiper for sliding electrical contact with the corresponding supply conductor and a zero-volt shoe for sliding electrical contact with the track corresponding zero-volt return conductor, these power and zero-volt return rubbers being electrically connected to the user circuits of the vehicle. Advantageously, the contact between each power wiper and the corresponding power supply conductor can then take place under the corresponding protection profile and be surrounded by the return of this protection profile. Preferably, the two linear supply conductors may each be connected to a continuous low supply voltage, one positive and the other negative, for example of equal value. Other features and advantages of the invention will appear on reading the detailed description which follows, description made with reference to the accompanying drawings, in which:

. FIG. 1 is a cross sectional view of an example of an electrical power supply system according to the invention comprising a ground power supply device and an onboard sensor device;

FIG. 2 is a cross-sectional view of the ground-mounted electrical power supply device corresponding to the exemplary embodiment of the invention illustrated in FIG.

1;

Figs. 3 to 8 are cross-sectional views which illustrate embodiments of the main components of a ground-mounted electrical power supply device according to the invention. elements being represented alone or associated with a small number of them: - Figure 3 thus shows a central rail;

- Figure 4 shows a central rail mounted in a chute and cooperating with the guide assembly of the capture arm or the vehicle;

- Figure 5 shows a cross on which is mounted a central rail and a sidewall profiles completed by its protection profile;

- Figure 6 shows a carrier bracket; - Figure 7 shows a portion of a side profile on which is mounted a stirrup carrying a conductor and a protection profile;

- Figure 8 is similar to Figure 7 but illustrates another variant of linear conductor;

. FIG. 9 is a perspective view of an example of an on-board current sensing device according to the invention completed by a guiding device; . FIG. 10 is a perspective view of a carrier assembly according to the variant of FIG. 9, one of its connecting pieces being separated from the interface piece;

. Figures 11 and 12 are perspective views of two catch pads for mounting on the carrier assembly of Figure 10 and arranged on either side of the central rail.

The electrical power supply system according to the present invention may be described in greater detail with reference to FIGS. 1 and 2 to FIG. to 12. The equivalent elements shown in the different figures will bear the same numerical references.

The various figures and the detailed description below relating thereto, relate to a particular embodiment of the invention with two linear supply conductors, two return conductors to zero volts and two subassemblies of capture . It must however be understood that this is only a preferred example of the invention in no way limiting. As already mentioned and although not shown, the power supply system according to the invention may comprise only one linear supply conductor, a single return conductor track to zero volts and only one subset capture.

In the same way the supply voltage of the linear conductor (s) supply (s) can be of any shape and value. It may be, but not necessarily, a DC voltage, a high traction voltage, a safe low voltage or other. A high tensile voltage generally used is of the order of 750 volts. Safe low voltage is understood to mean voltages less than or equal to 60 volts for each polarity. These voltages are safety voltages that is to say non-lethal voltages and physiologically not dangerous for the man.

The electrical power supply system 1 according to the invention is formed of two complementary devices which cooperate to enable the ground-based power supply of the on-board electrical circuits to be used on board. a mobile electric vehicle on a specified route. It is formed of an electric power supply device 2 disposed on the ground and a current sensing device 3, embedded on the vehicle and moving with the latter, which will be successively described for the preferred embodiment shown.

The current supply device 2 is shown alone in FIG.

This device is contained in a trough 4, preferably of concrete, of substantially rectangular section and open at its upper face.

This chute 4 is intended to be placed in a trench and immobilized therein with the aid of a suitable backfill. The height of the trench is preferably chosen so that the top of the trough is substantially flush with the surface of the ground. The concrete chute 4 may nevertheless protrude above the surface of the ground. In some cases, it may not even be buried, but simply placed in excess thickness and immobilized on a finished floor already existing, for example a roadway.

To allow the evacuation of the water that can infiltrate the chute 4, its internal volume is drained preferably by means of a central linear collection 5 and two channels not shown along and bordering the chute. of the pipes or pipes then drain the collected water to a look and then to the sewer.

The ground-based current supply device 2 mainly consists, for the variant shown, of a preferably central rail 6 and of two linear supply conductors 7, each connected to a preferably continuous voltage, the positive-y - -1 ^~ 'other - negative -,; - -sub-- -Ia --- form --- of - deu-x- symmetrical subsets of power supply. The electrical energy comes from a network after transformation and rectification in distribution stations and sub-stations to arrive at a supply voltage set in the preferred example described at +60 volts and -60 volts. The return by the electrical zero is performed along the rail 6, preferably central, which carries for this purpose two conducting strips 8 return to zero volts, preferably symmetrical.

The rail 6 can serve only to support the conducting track (s) 8 return to zero volts. However, and preferably, it may also be a guide rail, the invention nevertheless remaining valid in the absence of this guide function. Advantageously, the rail 6 may be made, preferably by extrusion, of electrically insulating material and mechanically resistant. Various current processes make it possible to obtain parts whose resistance is maximum in the direction of extrusion with, as the case may be, reinforcing fibers.

It is also envisaged the case of a metal rail 6 because it is at a zero electrical potential and therefore without danger to people. In the preferred embodiment shown, the rail 6 has a body 9 whose general shape of section is of substantially triangular type.

In order to save material, while ensuring a satisfactory strength vis-à-vis the lateral forces, the body 9 of the rail 6 has a hollow box structure and thus includes for example two superposed boxes 10 to -sensrbiement-section trapezoidal _r and separated by a cylindrical cavity 12. According to an essential characteristic of the invention, the rail 6 carries on at least one of its side walls 13, but preferably on each of them, a conductive track 8 allowing the return to zero volts, preferably made of steel. The tracks 8 are preferably symmetrical and substantially vertical, as shown in the various figures.

The body 9 of the rail continues upwards by a full rail head 14, which can also be called mushroom. It has, in the example shown, a section of generally trapezoidal shape with two lower flanks inclined and diverging upwards, two inclined rolling tracks 16 and joined in the upper part by a table 17 for example slightly convex.

It can thus serve as a guide rail for a guide assembly of the vehicle or the capture arm, which, as shown in FIGS. 4 and 9, may comprise two V-shaped guide rollers 18 which roll on the two corresponding inclined tracks 16. of the head 14 of the rail 6.

Downwards, the body 9 of the rail 6 terminates preferably by an enlarged base 19 leaving on each side a longitudinal support edge 20 allowing its anchoring in the bottom of the chute The rail 6 is immobilized in the bottom of the chute 4 on crosspieces 21 arranged at regular intervals, for example every 0.80 m and by means of clamping pieces 22, called clamping, screwed on the sleepers.

At each of the lateral ends 23 of these crosspieces 21, is immobilized by ^~ cl-ipsage - 1 -'extrémité - inférieuxe-_2-4 -.' - a _ _ _ _. The flank sections 25 laterally delimit the electric power supply device. Their outer face is taken in the concrete. These flank sections 25 may be made of plastic material, for example pultruded very lightly loaded.

As already mentioned, the current supply device 2 according to the invention comprises at least one, but preferably two linear conductors 7 arranged in the trough 4 on either side of the rail 6 and at a distance therefrom.

These conductors 7 preferably have a substantially trapezoidal symmetrical section and can be made from any suitable conductive material such as stainless steel, aluminum or copper.

In the case where they are connected to a very low voltage (+60 volts or -60 volts), the conductors 7 are subjected to a current of high amperage. They must therefore have a relatively large surface area. For reasons of weight and price, the use of aluminum will be favored for the realization of these drivers.

To ensure good friction conditions between the scrapers of the current sensing device 3 and the linear conductors 7, the corresponding face thereof is preferentially covered with a friction plate 26 of stainless steel of small thickness, for example of a millimeter thick approximately. In the preferred example shown, this friction plate 26 is attached to the flat bottom face 27 of each of the conductors 7.

As illustrated in Figure 8, the

-conductor - linear .-. J ... _n .'_ is ._. p.as _..__ fo_r_cément monobloc.

In the case where a smaller surface area is sufficient, the linear conductor 7 may be formed of a conductive linear core 55 embedded in an insulating support 56, for example of substantially trapezoidal section.

The insulating support 56 comprises in the lower part a receiving groove 57 in which the conductive linear core 55 is force-fitted and retained. The flat lower face 58 of the conductive linear core 55 remains free and is preferably slightly set back at the inside of the insulating support 56.

The linear supply conductors 7 are carried by a series of stirrups 28 through which they are suspended. Each of these stirrups 28 preferably comprises an upper wall 29 extended downwards, at its lateral edges, by two lateral walls 30 matching the shape of the upper part of the conductor 7 or the corresponding insulating support 56.

At least one and preferably each of these stirrups 28 may be formed of two wedge-shaped pieces 31 which are placed on either side of the conductor 7, then joined at their upper wall 29 and assembled by clamping. so as to hold the conductor 7 or the insulating support 56 thereof by pinching.

The stirrup 28 also preferably comprises an upper bead 32 projecting upward, whose function will be explained later.

The stirrups 28 are laid at intervals. They are spaced about 800 m for example, but can be arranged more closely and regularly, especially in the curves.

As can be seen in FIGS.

-8 -, -l-es-tr-ier ^ s- ^ δ-rest on a -nervure ... support 3_3 sidewall profile 25 and are for example fixed on it to the screw means 34 whose nuts are taken in the concrete.

A protection profile 35 is fixed on at least one and preferably each sidewall profile 25. This connection can be made at the upper end of each sidewall profile 25 in which is engaged the end of the profile. protection 35 which is preferably also fixed by means of screws 34 whose nuts are taken in the concrete. This protection profile 35 preferably has a generally L-shaped shape and surrounds the linear conductor 7 placed below.

By its presence, it prohibits possible access of users to the linear conductor 7 under tension thus ensuring complete security. In addition, it prevents undesirable, accidental or malicious penetration of objects, tools, debris or the like in the power supply system according to the invention. It also provides overall protection against the elements.

The architecture of the assembly described above is made such that each conductor 7 is completely masked by the L-shaped protection profile 35 which makes it inaccessible. This feature, possibly coupled with the use of low voltage, makes the system power supply according to the invention a totally secure system.

The protection profile 35 preferably has an upper shelf 36 slightly sloping outwardly for the flow of rainwater to the corresponding bank forming gutter. An intermediate joint not shown, mounted on each side ^" in ^" a ^"~ ^{"""""""""""""""""""""""} -fi-le- flank 25 ensures the separation of ^one seal. Advantageously, there is a space between the rail 6 and the protective profile 35, which allows evacuation to the bottom of the trough 4 of the body of water and such as for example debris or small objects .To avoid jamming, the existing space, in the absence of cross member 21, between the base 19 of the rail 6 and the lower end 24 of the sidewall profile 25 is of greater size than that existing between the rail 6 and the protection profile 35. The protection profiles 35 must be sufficiently strong to withstand the weight of another electric vehicle in the crossings or to allow the passage of ordinary vehicles, pedestrians, cyclists or motorcyclists at crossings and level crossings arranged with conventional circulation.

These profiles being slightly flexible, the upper bead 32 projecting from some or each of the carrier stirrup 28 forms for it a bearing abutment as can be seen in Figure 7, which allows a recovery efforts in case significant deformations.

The structure described above is continuous. As regards stirrups 28, they may be punctual, that is to say in the form of a piece that repeats at intervals. The flank profile 25 is it is continuous, but is fixed to inserts drowned in concrete and provided at regular intervals.

We will now go into more detail in the description of the current sensing device, embedded on the vehicle and illustrated in Figures 9 to 11.

The collection of electrical energy

--necessary. _de operation of the vehicle use circuits is effected by means of at least one and preferably two mobile collection subsets 38, for example symmetrical, which flow in the trough 4 on either side of the rail 6 .

The main part of each collection subassembly 38 is a sensing shoe 39 shown in perspective in FIGS. 11 and 12. The two sensing shoes 39 are preferably identical, one being simply arranged inverted with respect to the other .

In the preferred embodiment shown, each shoe 39 has an elongated body 40 and has in its central position a substantially horizontal power slider 41 intended to come into sliding contact with the underside 27 or 58, preferably coated with a friction plate. 26, the corresponding supply conductor 7.

Of course, this power wiper 41 can be mounted in resilient contact contact with the conductor 7 so as to ensure satisfactory electrically conductive contact in all circumstances.

Advantageously, in operation, the contact between the power wiper 41 and the power supply conductor 7 is effected under the protective profile 35 in the form of a lying-down L and is surrounded by the return of this protection profile.

Each of the capture shoes 39 comprises also, on its side intended to be directed towards the rail 6, a zero-volt scraper 42 arranged to be and to remain in sliding electrical contact on the corresponding zero return volt conducting track 8 carried by the rail 6. These wipers 42 may also be mounted in elastic return contact with the corresponding track 8.

-The-ir-o-head-UT-s .de. _p_uiss_ançe_ 4JL ___ _ _r ~ j the friction zero volts 42 are made of electrically conductive material. The body 40 of the catch shoes 39, made of electrically insulating material, ensures electrical insulation between the two wipers.

Advantageously, the body 40 of the sensing shoe 39 may also incorporate dampers 43, for example formed of a box surrounding each wiper and its spring.

Each of the power scrapers 41 and return to zero volt 42 is electrically connected to a conductive supply strip for its electrical connection with the vehicle.

A protective cover 44, incorporating a device for fast connection of the electrical contacts, can advantageously hold each wiper in position. Preferably, and in order to facilitate maintenance, the wipers and their electrical connection can be released, in particular with a view to their replacement, by unscrewing a single screw 45 which remains integral with the cover 44. The two catching shoes 39 are carried and joined mechanically by a carrier assembly 46, preferably mounted on the guide arm of the vehicle for dynamic stability.

The carrier assembly 46, illustrated in FIG. 9, comprises two support arms 47 of generally U-shaped inverted shape and whose free ends 48 downwardly, preferably bent outwards, form hooking plates 49 for fixing the catching shoes 39.

The two U-shaped support arms 47 form the front and rear part of the carrier assembly 46. They are joined by two reinforcing lateral bars 50, preferably substantially horizontal, connecting on each - fiane --- les- -br-reeds The carrier assembly 46 serves two functions.

On the one hand, it supports the collection subsystems 38 inside the chute and on the other hand, it provides the electrical connection between these capture subassemblies 38 and the user circuits of the vehicle.

This latter function is preferably performed by means of copper bars 51 embedded in a composite material frame forming the support arms 47 and providing electrical insulation of the bars.

Each of the catching shoes 39 is fixed at the front and rear on the carrier assembly 46, by means of two attachment plates 49 each belonging to a different support arm 47.

One of these attachment plates 49 is electrically connected to the power wiper 41 and enables the power current to be transmitted to the user circuit of the vehicle, for example via the lateral branch of the corresponding support arm 47. The other plate 49 is electrically connected to the zero volt wiper 42 and allows the return to zero volt, for example via the side branch of the corresponding support arm 47. As part of normal vehicle operation, the ground power system according to the invention is provided so that the capture subassemblies 38 are inserted into the chute 4 in the pickup position at the beginning of the line and only come out at the end of the line. However, for reasons of safety and speed of intervention and disengagement, the system according to the invention allows the separation

subassemblies of the invention, and the extraction of the carrier assembly 46 in full line, for example in the event of a breakdown, accident or accident; any problem.

Advantageously, this separation in full line can be made, in case of serious breakdowns involving the safety of people, without damaging the other elements present in the chute. In addition, it ensures the power off elements outside the chute.

For this and as shown in FIG. 9, the carrier assembly 46 is separable longitudinally at its lateral reinforcement bars 50. It can thus be split into an upper interface piece 52 and at least one, preferably two lower pieces. The upper interface piece 52 is preferably extended on each of its flanks by a lower connection piece 53 each terminated by two attachment plates 49.

Preferably, the two connecting pieces 53 are identical and have a generally U shape. They can be secured to the upper interface piece 52 by means of a pin or shear bolt 54 which yields under a pressure greater than one. predetermined limit.

Obviously, the invention is not limited to the preferred embodiment described above and shown in the various figures, the skilled person can bring many modifications and imagine other variants without departing from the scope and scope of 1'invention.

Claims

Ground power supply system (1) for a land vehicle movable on a determined path, of ground-type electrical type sliding contact with at least one conductive part, system comprising a ^{~ "} supply ^{" device} ^{~ ~} cσuraτit-éiectrique - (- 2 ^• -) - arranged - on-the-ground-and-a current sensing device (3), embedded on the vehicle and moving with the latter, characterized in that:

- the device for supplying electric current

(2) is placed in a chute (4) open on the top, comprises at least one linear supply conductor (7) connected to a supply voltage, this at least one conductor (7) being placed in the chute (4) laterally to a rail

(6) which carries at least one return conductor track (8) to zero volts, and further comprises at least one protection profile (35) which has a generally L-shaped lying, surrounding and hiding the at least one linear conductor (7) underneath, in that - the on-board current sensing device (3) comprises at least one movable pick-up subassembly (38), carried by a carrier assembly (46), which circulates in the chute (4) laterally to the rail (6), this at least one sensing subassembly (38) comprising a power wiper (41) intended to come into sliding electrical contact with the at least one supply conductor ( 7) and a zero-volt shoe (42) intended to come into sliding electrical contact with the at least one zero-volt return conductor track (8), these power (41) and zero-volt return power (42) ) being electrically connected to the user circuits of the vehicle, and in that

- the contact between the power wiper (41) and the at least one power supply conductor (7) is effected under the at least one protection profile (35) and is surrounded by the return of this at least one ^" prof ± i" e-de-protection-

2. The system power supply to the ground according to Claim 1 characterized in that the at least one linear power supply wiring (7) is connected to a DC voltage of ^one supply.

Ground power system according to claim 1 or 2, characterized in that

the electric power supply device (2) comprises two linear supply conductors (7) each connected to an electrical supply voltage, these two conductors (7) being placed in the trunking (4) on both sides another of a central rail (6) which carries two zero-volt return conductor tracks (8), and furthermore comprises two protective profiles (35) which have a generally L-coated shape, each of these protection profiles ( 35) surrounding and hiding one of the linear conductors (7) placed underneath, in that - the on-board current sensing device (3) comprises two movable sensing subassemblies (38) carried by a carrier assembly ( 46), which circulate in the chute (4) on either side of the central rail (6), each of these sensing subassemblies (38) comprising a power wiper (41) intended to come into electrical contact with each other. sliding with the corresponding supply conductor (7) and a zero-volt shoe (42) intended to come into sliding electrical contact with the corresponding zero-volt return conductor track (8), these power (41) and return rubbers at zero volts (42) being electrically connected to the user circuits of the -vector and the contact between each power contactor (41) and the corresponding supply conductor (7). performs under the corresponding protection profile (35) and is surrounded by the return of this protection profile.

4. ground power system according to claims 2 and 3 characterized in that the two linear supply conductors (7) are each connected to a low DC supply voltage, one positive and the other negative .

5. ground power system according to the preceding claim characterized in that the supply voltage supplied by the linear conductors (7) is +60 volts for one and -60 volts for the other.

6. Ground power system according to any one of claims 1 to 3 characterized in that the supply voltage supplied by the at least one linear conductor (7) is high tensile voltage.

7. ground power system according to the preceding claim characterized in that the high tensile voltage is about 750 volts.

8. ground power system according to any one of the preceding claims characterized in that the chute (4) is a concrete chute of substantially rectangular section, which is buried in a trench so that the top of the chute is substantially flush with the surface of the ground.

9. Ground power system according to any one of the preceding claims characterized in that the interior volume

-de-la-gouiotte - (- 4 -) - es-t-d-r-ai-born-au-moy-eru-d-'- uπie_αoline linear_Le (5) and two gutters along and bordering the chute.

10. Ground power system according to any one of the preceding claims characterized in that the rail (6) serves as a guide rail.

11. Ground power system according to any one of the preceding claims characterized in that the rail (6) is made of electrically insulating material.

12. Ground power system according to any one of the preceding claims characterized in that the at least one conductive trace return zero volt (8) is made of steel.

13. ground power system according to claim 3 characterized in that the two return conductor tracks to zero volt (8) are symmetrical and substantially vertical.

14. Ground power system according to any one of the preceding claims characterized in that the rail (6) is immobilized in the bottom of the chute (4) on sleepers (21) arranged at regular intervals.

15. Ground power system according to any one of the preceding claims characterized in that the ground current supply device (2) is delimited laterally. by two flank sections (25).

16. Ground power system according to claims 14 and 15 characterized in that the flank sections (25) are made of plastic material and are immobilized by clipping their lower end (24) at the lateral end. (23) corresponding sleepers - ( ^" 2F) -

17. Ground power system according to any one of the preceding claims characterized in that the at least one linear supply conductor (7) is made of aluminum.

18. Ground power system according to the preceding claim characterized in that the sliding surface of the at least one linear supply conductor (7) is covered with a friction plate (26) of low stainless steel thickness.

19. Ground power system according to any one of the preceding claims characterized in that the at least one linear supply conductor (7) is formed of a conductive linear core (55) embedded in an insulating support (56).

20. Ground power system according to any one of the preceding claims characterized in that the at least one linear supply conductor (7) is carried by a series of stirrups (28) by which it is suspended .

21. Electrical ground power system according to the preceding claim characterized in that at least one of stirrups (28) is formed of two pieces (31) shaped wedge placed on either side of the at least one conductor (7), then joined and assembled at their upper wall (29) in order to hold the at least one conductor (7) by pinching.

22. Ground power system according to claim 20 or 21 characterized in that the stirrups (28) are laid at intervals and fixed on the flank sections (25).

23. An electric power system at ^~~ n ^~ l ^'~ s ^~ e ^~ iA ^~~ rσn revendlc ^ -Tron-15-caxactrér ± -se-in-this-that- the at least one cover profile ( 35) is fixed on one of the side profiles (25).

24. floor power system according to any one of the preceding claims characterized in that the at least one protective section (35) has an upper shelf (36) slightly sloping outwardly.

25. Electrical ground power system according to any one of claims 20 to 22 characterized in that at least one of the stirrups (28) comprises an upper bead (32) projecting upwardly forming a stop of support for the at least one protection profile (35).

26. Ground power system according to any one of the preceding claims characterized in that there is a space between the rail (6) and the protection profile (35) which serves for the evacuation of water and foreign bodies towards the bottom of the chute (4).

27. Ground power system according to any one of the preceding claims, characterized in that in the at least one sensing subassembly (38), the power wiper (41) and the zero volt shoe (42). ) are gathered on a sensing shoe (39).

28. ground power system according to claims 3 and 27 characterized in that the two sensing shoes (39) are identical, one being arranged inverted with respect to the other.

29. Ground power system according to any one of the preceding claims characterized in that at least one of the power wiper (41) or zero volt shoe (42) is mounted in resilient contact with the contact at the minus one linear conductor (7) or the at least one conductor-conductor-ee (- 8 -) - corresponding (-e -) -.-

30. Ground power system according to any one of the preceding claims characterized in that at least one of the power wiper (41) or zero volt shoe (42) is equipped with a damper (43).

31. Ground power system according to any one of the preceding claims characterized in that the carrier assembly (46) is mounted on the guide arm of the vehicle.

32. Ground power system according to any one of the preceding claims, characterized in that the carrier assembly

(46) contains copper bars (51) embedded in a composite material frame providing electrical insulation of the bars.

33. ground power system according to claims 3 and 27 characterized in that the carrier assembly (46) comprises two support arms

(47) of generally U-shaped inverted, whose side branches are joined by side reinforcing bars (50) and whose free ends (48) located downwardly form hooking plates (49) for fixing the catching shoes (39).

34. Ground power system according to any one of the preceding claims characterized in that it comprises a means for separating the at least one subset of capture (38) for extracting the carrier assembly (46) in full line.

35. Ground power system according to the preceding claim characterized in that the carrier assembly (46) is splittable into an upper interface piece (52) and at least one connecting bottom piece (53).

3 ^~ 6 ^~ ; -System-d -'-al-iment-ati-on-e-l-ee-trique-au-sol according to the preceding claim characterized in that the at least one lower connecting piece (53) is secured to the upper interface piece (52) by means of a pin or shear screw (54) which yields at a pressure greater than a predetermined limit.