FR2471299A1 - Trolley-bus current collector with automatic contact and retraction - by alignment of boom and collector shoe with wire, using remote controlled aiming sight - Google Patents

Abstract

A bidirectional motorised gearing (20,19) controls the rotation of the boom support (6) when the boom (9) is raised towards the overhead wire (f). The collector shoe (25) of flexible or rigid material is jointed about an axis (26) with a shock absorber (27). The boom is raised and lowered by a pneumatic jack (17) and maintained in contact by a coil spring (12). The gear wheel (20) slides into mesh under the action of a fork (23) at the end of the shaft of an auxiliary jack (24). Rotation of the boom about a vertical axis is controlled by the motor so as to ensure that contact is re-established with the overhead wire. The collector shoe is oriented, by means of a remotely controlled aiming sight and retractable adjustment, in line with the wire regardless of the angular position of the boom w.r.t. the vehicle.

Description

 The present invention relates to transport and more particularly the electrical equipment of vehicles with electric traction, such as trolleybuses provided with poles with wipers at their ends to cooperate in pressure with conductive wires of different polarities, arranged in height.

 In known devices of this kind, the poles are connected by ropes at their ends, to winding coils disposed at the rear of the vehicle and provided with return devices intended to 'automatically allow the rapid lowering of said poles in accidental skinning, thereby avoiding their deterioration by shock, as well as that of the overhead line.

 Such devices have notable drawbacks and the transverse overflow of said cords is noted with respect to the size of the vehicle, in the event of rotation of the poles due to the distance of said vehicle from the overhead line, often causing their hooking by passing vehicles; the difficulty of the operator for refocusing and setting up the poles, by resetting the coils by key and then difficult presentation of the rubbers on the wires of the overhead line while retaining the said poles; the risk of accidents during this intervention which takes place in the flow of urban traffic.

There is also known a device for articulation of the pole head whose axis is slightly inclined on the vetticale in order to reduce the parasitic effects due to laces and turns
There are also devices controlled from the cab and allowing the stopping, the lowering of the poles along the longitudinal axis of the vehicle, and automatically their installation on the overhead line, in the only condition of axial alignment by fact of said vehicle with respect to said line. These devices used essentially for lowering or replacing the poles in the case of vehicles with electric mixed traction or with internal combustion engine also comprising the return ropes for manual control in the event of skinning or changes of overhead lines.

 According to the present invention, we wanted to make a set of power outlets for trolleybuses (or possibly traraways) automatically authorizing, in addition to the lowering and axial refocusing of each pole in the event of sudden accidental breakout, the slow ascent for the installation of the wiper on the line whatever its axial, parallel or oblique position with respect to the vehicle, without the use of return cords and by simple manual control exerted inside the cabin.

 According to another characteristic, each pole is connected to a control cylinder which, in the event of a rough peening, causes in combination with the inherent breakdown of the vehicle's electrical supply, a pressure variation of one of its chambers or of the two chambers. and other of its piston to control an elastic means integrated in the control circuit in order to obtain by electrical contact in addition to the automatic lowering of the pole on the roof of the vehicle and its axial positioning, the clutch d 'A motor-driven rotation device, intended to allow, in combination with the slow ascent, the installation of the wiper on the overhead line.

According to another characteristic, the wiper head mounted at the end of each pole comprises a joint with a horizontal axis with an adjustable hardness damper intended to absorb vibrations at the level of the overhead line, the so-called joint with a horizontal axis and perpendicular to the pole being combined or not with a known anti-lace joint, the axis of which is located in a vertical plane containing the pole and, moreover, slightly inclined relative to the vertical.

 According to another characteristic and as a variant, the articulations of the wiper head, namely the horizontal articulation with shock absorber and possibly the anti-yaw articulation, are slightly dimensioned, while all of these articulations are coated with a flexible material. and elastic of appropriate thickness.

 According to another characteristic and in a second variant, the articulation with a horizontal axis of the wiper head and the shock absorber are replaced by a monobloc and flexible profiled assembly constituting the main body of said head and in which is inserted during the molding a cable, or other armature to avoid any risk of accent in the event of rupture of the flexible material of the aforementioned head.

 According to another characteristic, the wiper is established with two contact points spaced on the overhead line to improve the interference in the curves of the line; said wiper further comprising rapid change devices with respect to the wiper.

 According to another characteristic, the wiper carrier externally forms convex, asymmetrical vertical cheeks and of different heights with internally sloping and opposite faces along its entire length; moreover said wiper has a mass imbalance with respect to its articulation in the horizontal plane.

 These characteristics and others will emerge clearly from the following description.

To set the subject of the invention without however limiting it, in the accompanying drawings
Figure 1 is a small perspective view of an electric traction vehicle with poles cooperating with an overhead power line.

 Figure 2 is a larger scale an external view of an electrical outlet socket assembly made according to the invention and in the normal case of power and movement -from the vehicle.

 Figure 3 is a plan view corresponding to Figure 2. The dashed line illustrates the horizontal pivoting of the pole.

FIG. 4 is an external profile view corresponding to FIG. 2.

 FIG. 5 is a side view in cross section along the axis 5-5 of FIG. 2.

 Figure 6 is a view similar to Figure 2, but in the case of unpunning. The wiper head has a joint with a horizontal axis with shock absorber combined with a joint with a tilted vertical axis forming an anti-shoelace and disposed at the end of the pole.

 Figure 7 is a view similar to Figure 6, but the pole is lowered and centered axially on the vehicle roof. The device for controlling the rotation of said pole is shown in the engaged position.

 FIG. 8 is an external profile view corresponding to FIG. 7.

 FIG. 9 is on a larger scale a front view in longitudinal section of a friction shoe mounted on horizontal and vertical articulation axes on the head, itself obtained by molding a flexible material with cable inserted, in order to allow its -Election relative to the pole.

 FIG. 10 is a side view in cross section along line 10-10 of FIG. 9.

FIG. 11 is a profile view in cross section following
ant line 11-11 of figure 9.

 FIG. 12 is an exterior plan view corresponding to FIG. 9.

Figure 12a is a perspective view of the upper end of the wiper head.

 Figure 13 is on a larger scale a front view in longitudinal section of a friction shoe with splaeric joint, according to an alternative embodiment.

 FIG. 13a is a partial profile view and cross-section along the line 13-13 in FIG. 13.

FIG. 14 is a side view corresponding to FIG. 13.

 Figure 15 is a side view corresponding to Figure 13, but on the opposite side.

Figure 16 is a cross-sectional profile view taken along line 16-16 of Figure 13
FIG. 17 is an external front view corresponding to FIG. 13.

 Figure 18 is a non-limiting example of an electrical diagram of the power principle for the operation of one socket outlet according to the invention. This diagram is produced using pneumatic elements.

 FIG. 19 shows a basic electrical diagram for controlling the power circuit of FIG. 18.

 Figure 20 is a purely schematic view illustrating the control station for the automatic operation of the poles in particular for the reperchage.

 FIG. 21 is a variant made to the electrical diagram of the control principle of FIG. 19.

 FIGS. 22 and 23 are respectively variants made to the electrical power diagram of FIG. 18.

 In order to make the object of the invention more concrete, it is described in a nonlimiting manner with reference to the exemplary embodiments of the figures of the drawings.

 This set of socket outlets with automatic piercing and rediscovering for vehicles with electric traction, in particular trolleybuses and established essentially along each pole with a metallic F3ateforme 1 fixed axially and longitudinally on the roof of the vehicle by means of isoBteurs 2 and shock absorbers 3.

The platform 1 allows the fixing of a fixed axis 4 on which rotates freely by means of ball bearings 5, a vertical support 6 whose rear base allows articulation around a fixed axis 7, of a sheath 8 intended to authorize the mounting by clamping or otherwise of the lower end of the pole 9 It should be noted that this sheath 8 receives a freely rotating roller 10 which cooperates during the lowering of the pole 9 with an inclined track 11, as indicated below ~ after
Each perchg 9 provided at its free end with a head with wiper to cooperate with the supply wire of the line, is permanently drawn upwards by means of coil springs 12 interposed in tension between an axis of attachment 13 secured to the rear part of the support yoke G and on the opposite side an adjustable lifting beam 14 fixed on a support 15 integral with the end of the sheath 8.

 The support 15 allows axially the coupling 16 of the rod 16 of a pneumatic cylinder whose barrel 17 housed in the upper part of the support yoke 6 is articulated freely by the internal intern of its transverse axes 18, of marnière d follow the vertical movements of the pole 9.

It should be noted that the arrangement of the jack 16 is such that its mass tends to balance the swivel assembly with respect to the fixed axis 4, mainly during the turns of the vehicle, avoiding spillage due to radial acceleration.
The support yoke 6 is made integral at its base with a smooth conical crown 19, which also rotates around the fixed axis t so as to cooperate with a conical wheel 20 whose periphery is coated with a lining. friction0
A shaft 21 supported by bearings 22 integral with the platform 1 authorizes the drive in rotation of the wheel 20 while allowing its free longitudinal sliding to be in contact or not with the conical ring 19 for its coupling
This sliding of the wheel 20 is effected by means of a fork 23 engaged in a groove 20t and mounted at the end of the rod of the jack d.

 It should also be considered that the shaft 21 is coupled to an electric motor M (pneumatic or hydraulic) at reduced speed fixed on the platform 1, with a possibility of driving in rotation in both directions.

 According to this arrangement, it can be understood that the operation of the motor M entralne the shaft 21 and consequently, during the engagement of the crown 19 relative to the wheel 20 by the action of the jack 24, the support yoke 6 for the rotary control in a horizontal plane of the pole 9, to ensure automatic tracking with respect to this aerial wire.

 In the context of a first alternative embodiment, the wheel 20 and the conical crown 19 are toothed to permanently mesh, while a slide driven in rotation by the shaft 21 but free in longitudinal movement has its conical nose provided with a friction lining in a corresponding bore established at the end of the wheel 20, when the clutch is obtained in the same way as above by the action of the jack 24 and the fork 23.

A second variant consists in directly coupling the motor
M on the wheel 20. The rotor of the engine then turns freely, during the oscillations of the boom device, which follows the profile of the overhead line, when the said engine is not supplied with energy. The motor is supplied gradually, either by increasing voltage or increasing pressure, the speed of rotation of the boom cable is therefore increasing, from 0 to a maximum; which makes it possible to reproduce a sensitive acton of the operator, on a joystick, during the approach of the head towards the aerial wire.

 The pole 9 supports at its end a head 25 articulated around an axis 26 with an interchangeable intermediate damper 27 of adjustable hardness, designed to elastically absorb the vibrations and forces between the two parts with a view to flexible sliding on the overhead line, taking into account its profile and its dressage defects, as illustrated in Figure 2.

According to the embodiment in the first variant of the wiper head illustrated in FIG. 6, the head 53 is also mounted with articulation around an axis 54, with an interchangeable intermediate damper, on a support 55. The latter is also mounted with articulation by its front part on an axis 52, arranged in a vertical plane but with an inclination relative to the end forming a yoke 56 of the pole 9. This arrangement aims to reduce the parasitic effects due to laces and turns.

 According to another embodiment in a second variant of the wiper head illustrated in FIG. 9 the axle 26 and shock absorber assembly of the embodiment of FIG. 2 and the head 53 and support 55 assembly with intermediate damper of the embodiment of FIG. 6, are deleted and replaced, as illustrated in FIG. 9-, by a one-piece head 25 made of flexible material which is sufficiently strong, such as polyurethane plastic. This head 25 forms in this case at the right of its useful section a thickness thinned and enlarged at 251 so as to be able to flex and produce the damping effect of dynamic disturbances. A steel cable A (chain or other) is also inserted into the flexible material, to avoid, in the event of accidental breakage, the falling of the broken piece.

According to an embodiment in third variant of the wiper head not shown, the articulations of axes 26 and possibly 52 with respectively the head 53 efflsupport 55 and the yoke 56 and the support 55, are established with a small dimensioning to be externally coated with '' a flexible material such as polyurethane, whose thickness depends on the applied forces
This arrangement makes it possible - to strengthen the joints, - to absorb movements, - to protect the joints from shock and chemical agents, - to ensure an aesthetic presentation.

In the embodiment illustrated in FIGS. 9, 10, 11, 12 and 12a, the head 25 made of flexible material or not, receives a vertical axis 23 fixed or mounted for free rotation on suitable bearings whose upper part forming a yoke authorizes the engagement of a transverse and horizontal axis 29 with a view to free articulation in a vertical plane of a wiper 30. The latter internally receives the straight wiper 31 constituting two spaced contact spans 311 and 312 on the cable f-so as to improve the quali
~.

t of interference in curves, in particular by avoiding undercutting.

The wiper 31 is centered and fixed in a removable manner by means of a hairpin spring 32, the lateral branches of which bear on the shoulders 33 of the said wiper and the base on sloping and opposite faces 31 in order to ensure its maintenance in the corresponding housing of the 30S wiper while allowing its rapid release for its change.

We also note that the wiper 30, whose horizontal axis 29 is located very close to the furrow area in order to practically eliminate the rearing effect, is established with opposite vertical cheeks 3G sloping, in V shape, along their entire length so as to allow self-centering of the wiper 31 when it is placed on the overhead cable f.

 We note on the other hand that the cheeks 30 - 3ç2 are convex along their vertices to allow during the vertical pressurization of the cable f, the obtaining of a return torque towards the coaxiality of the wiper 31 with the cable f.

It is important to consider that the convexity of one of the cheeks 301 exceeds in height that of the other cheek 302 at the ends of the friction shoe holder 2 following C as illustrated in FIGS. 9 and 12a by thus constituting two prominences forming "horns".

 This arrangement makes it possible to eliminate any equilibrium points which could occur during the pressurization of the tops of the wings of the friction shoe carrier 30 on the overhead line.

It is also noted that a slight mass imbalance is provided with respect to the horizontal joint, so that the ends of the cheeks 301 - 302 are in the form of two "asymmetrical horns between which it is easier to make penetrate the line.

 We note for this purpose that this asymmetry of the "horns allows on the one hand the possible creation of a couple initiating a rotational movement by the engagement of the friction shoe between the two" horns "and the support on the internal slopes and on the other hand the creation of a couple of self-alignment: wiper-line, facilitated by an oscillation of the wiper-tending to return to the horizontal and parallel to the line; all the phenomena being produced by a vertical thrust from the jack and the fact that the highest "horn" constitutes a contact point relatively distant from the vertical axis of articulation.

 In the alternative embodiment illustrated in Figures 13,1aa, 14i5, 16 and 17, the vertical axis 33 is fixed on the head 25, while its upper end forms a ball joint 331 on which the holder fits and is articulated wiper 34 produced with asymmetrical cheeks established as above and maintained by circlips. The latter receives the wiper 31 which has the same characteristics as above, but is held transversely by a hinged cover 35 constituting the upper profile of the wiper 34. This cover 35 is articulated at one of its ends forming a hinge around an axis 36 while its opposite end is held by a screw 37.

 The wiper 31 is further positioned axially and held longitudinally in a flexible manner on the wiper 34 by means of two extreme leaf springs 38 cut into a U shape.

The pneumatic cylinder 17 is connected by its opposite internal chambers 171 and 172 arranged on either side of the control piston 16, by means of a pipe 39 which 2 passes through compressed air distributors 40 - 401 and 40 in the case of pneumatic supply while a filter 41 makes it possible to compensate for the slight differences in volume variation between these said chambers. A membrane detector 42 is also also inserted in the pipe 39 in order to be stressed in case of rapid peeling, creating a sudden depression between the chambers 2 bres 171 and 17, to control an electrical contact authorizing the folding of the pole 9 downwards by the jack 17 and by means of the roller 10 rolling on the inclined track 11, its axial and longitudinal positioning relative to the vehicle.

 In a second step, the pressurization of the jack 17 also causes the feeding of the jack 24 which acts on the fork 23 for the longitudinal displacement of the wheel 20 which engages with the conical ring 19 for the control in gear of the pole 9 in a horizontal plane to allow, without external intervention, its reperchage on the overhead cable.

 In a third step, the supply of the jacks 17 and 24 is stopped, and the jack 17 is purged at a reduced flow rate to ensure, by the springs 12, the slow ascent of the pole 9 in combination with its horizontal rotation obtained via of the electric motor M put into operation by a switch I and able to act in both directions of rotation at variable speeds. Therefore, the wiper 31 can be placed directly on the overhead cable F directly from the driver's cabin which has for this purpose an optical means allowing it to control the reperchage thus.

 In a fourth step, the complete purging of the jacks 17 and 24 intervenes and allows on the one hand the perfect contact of the wiper 31 on the cable f and on the other hand the opposite movement of the fork 23 in order to disengage the wheel 20 .

We will now describe these different operating phases using the electrical diagrams in principle which are in no way limiting in FIGS. 18 to 23.

 When there is leakage for any reason, the resulting electrical cut is detected by a relay R supplied directly by the distribution network with 600 volts. This relay R can be timed to delay its activation, depending on the parameters of the other accessories. T he contacts of relay R enable the various components necessary for controlling the power elements to be supplied with low voltage (24 volts).

 Thus, as shown in FIG. 19, the action of the relay R has the consequence of closing its contact rl for the supply of the solenoid valves E and EV for the control of the distributors 40 - 401 which close the free circulation of the air between the chambers 171 and 172 of the pneumatic cylinder 17. The contact rl is mounted in series with a contact xl normally closed at rest, and relating to a relay X.

This loss of contact due to a peeling, is accompanied by an upward movement of the pole 9 (FIG. 6) which will move the jack 17 and create pressure in the chamber 421 and a depression in the chamber 422 of the detector 42 with membrane 43 for separating said chambers.

 The pressure force in the chamber 421 elastically deforms the membrane 43, which acts mechanically on a contact recalled by spring 44. The contact closure C1 causes the excitation of the relay X which self-supplies by its contact x2. The supply of relay X has the effect of opening the contact xl consequently cutting the supply of the electro-valves EV1 and EV for controlling the distributors 40 and 401, to once again authorize the free circulation of air between the chambers 171 and 172 of the jack 17. The supply of the relay X also has the effect of closing another of its contacts x3 which ensures the control of an electro-valve EV3 which controls the distributor 402.

402
The distributor 40 ensures the release of the chambers 421 and 422 through the distributors 40 and 401 (FIG. 18> as well as the pressurization of the chamber 172 of the jack 17 through a distributor 45, with closed mid-point, with a capacity 46 in series on the fluid network. The pole 9 is therefore folded down, its roller 10 allowing, in combination with the inclined track II its axial and longitudinal positioning relative to the vehicle, as previously indicated (Figures 7 and 8). The automatic take-up cycle is finished, the chamber 172 is still under pressure, and the jack 24 is supplied through an adjustable flow limiter 47 by the pipe 391.

 The jack 24 thus ensures the movement of the wheel 20 which engages with the conical crown 19 for the purpose of rotating the support assembly 6 of the pole 9. A lever 48 is placed (placed in the cockpit of the vehicle) in neutral position II of the distributor 45 to isolate the system from the supply via the capacity 46.

 The lever 48 in position III of the distributor 45 allows the purge of the jack 17 at a reduced flow rate by the throttle 49. This purge corresponds to a slow ascent of the pole 9 (depression in the chamber 172 of the jack 17).

 Using the switch I (figure 20), placed like the lever 48 in the cockpit of the vehicle, one controls in one direction or the other the rotation of the engine M (as indicated above) to replace the wiper 31 on line f. Relay R is energized, its contact rl being again in the open position.

 It is noted that the complete bleeding of the jack 17 by the lever 48, in position III of the distributor 45, ensures total contact of the wiper on the wire X, and also allows the bleeding of the jack 24 (FIG. 18) which returns to the initial position ( figure 2) disengaging the conical crown 19.

An action on a push button C2, from inside the cockpit of the vehicle, cuts the self-supply x2, of the relay X whose contacts xl and x3 pass respectively in closed and open position (figure 19)
It is also covered, as shown in FIG. 21, to avoid any false maneuver or clumsiness, the push button C2 being able to be actuated before the wiper 31 has reestablished the contact (opening of rî), to mount in series with C2 another contact r2 of relay R for the supply of a relay Y which interrupts relay X by a contact yS connected to the self-supply contact = 2 of said relay X.

 Likewise, numerous variants concerning the pneumatic power diagram can be introduced without departing from the scope of the invention.

For example, as shown in FIG. 23, it is possible to use only the chamber 172 of the jack 17 acting with only the chamber t2 of the distributor 42. The single connecting tube 50 between the two canters 421 and 172 receives a nozzle provided with a limiter 51. In this case, only rapid variations (skinning) are detected by the membrane 43 which acts, as indicated above on the contact Cl.

In the variant of FIG. 22, the two distributors 40 and 401 are replaced by a single distributor 52 connected to points a and b of the diagram in FIG. 18.

 It must be considered that to voluntarily maneuver the pole 9 (voluntary changes of feed lines for example), it suffices to join the points P and Q (Figures 8) with a tube fitted with a valve whose opening corresponds to the maneuver voluntary pole with the lever 48. In this case, it is desirable to place the lever 48 in position II before opening the valve located between points P and Q.

The advantages are apparent from the description.

 The invention is in no way limited to that of its modes of application any more than to those of the embodiments of its various parts having been more particularly indicated i on the contrary embraces all variants thereof.

Claims (11)

CLAIMS membrane (42), to cause it to be pressurized with a view to lowering the pole (9) with means of centering along the longitudinal axis of the vehicle; a control device by auxiliary jack (24) and motor (M) fixed on the platform for the clutching of a conical crown (19) integral with the base of the support for the purpose of controlling the rotation of the pole (9) in both directions to ensure, in combination with its ascent, the reparge from inside the vehicle; a wiper head (25) mounted with horizontal articulation and possibly combined with an inclined vertical anti-yaw axis at the end of the pole (9) with adjustable shock absorber (27); a friction shoe articulated vertically and horizontally with respect to said head (25) with asymmetrical cheeks and mass imbalance and means for removable attachment of the friction shoe (31) which forms two spaced spans (311 and 312) on the aerial cable food (f). -1- Socket set with automatic piercing and redialing for vehicles with electric traction, in particular trolleybuses comprising a platform (1) which is fixed axially on the roof by means of insulators (2) and shock absorbers (3) with vertical axes respectively for the free rotation of the outlet (6) on which the base of the pole (9) is mounted with means of return by coil spring (12) on the overhead cable (f), characterized by the fact that the sheath (15) supporting the base of the pole (9) is connected to the rod (16) of a jack (17) whose barrel is articulated on the support, and whose abrupt return in case of accidental piercing acts by its distribution with the inherent rupture of electrical supply, on a detector with -2- Power outlet assembly according to claim 1, characterized in that the jack (17) for lowering the pole (9) in the event of piercing, and for slow recovery is articulated freely by its transverse axes (18 ) integral with its barrel in the upper part forming the yoke of the rotating support (6) the arrangement of said jack balancing the pivoting pole support assembly (9) relative to the axis of articulation of said support (6). -3- Power socket assembly according to claims 1 and 2 taken together, characterized in that the means for centering the pole (9) in the longitudinal axis of the vehicle comprises a roller (10) freely rotatable mounted on the support sleeve (15) of pole (9), to cooperate in support during the automatic lowering of said pole (9) provided by the jack (17) and in case of piercing, with a track (11) fixed, axial and inclined in the shape of a V> fixed on the platform (1). -4- Power socket assembly according to claims 1, 2 and 3 taken together, characterized in that the device for controlling the rotation of the pole (9) from inside the vehicle for the reperchage and after lowering, is provided by an electric, pneumatic, hydraulic, variable speed, variable speed motor rotating in both directions, fixed on the platform, to drive a longitudinal shaft (21) on which a conical wheel is keyed for free sliding ( 20) cooperating or not by friction with a conical crown (19) fitted peripherally with a lining and integral with the rotating support (6). -5- Power socket assembly according to claims 1 and b taken together, characterized in that the means of displacement of the bevel wheel (20) for its clutching or disengaging by friction on the crown (19) is ensured by means of a fork (25) engaged in a groove (201) and mounted at the end of the rod of a jack (24) secured to the platform (1), said jack (24) being pressurized simultaneously with the jack (17) ensuring the lowering of the pole. -6- Power socket assembly according to claims 4 and 5 taken together, characterized in that as a variant, the wheel (20) and the conical crown (19) are toothed to mesh permanently, while a slide , driven in rotation by the longitudinal shaft (21) and in translation by the fork (23) of the cylinder rod (24), cooperates by its conical nose provided with a friction lining with the corresponding bore established face in the thickness of the gear. -7- Power socket assembly according to claims 1 and 4 taken together, characterized in that, alternatively, the motor (M) is directly coupled by its rotor to the wheel (20) engaged with the crown ( 19) in view of the free rotation of said rotor during oszillations of the boom device and when the power supply of the aforementioned motor is not ensured. -8- socket outlet assembly according to claims 1, 2, 3, 4, 5, 6 and 7 taken together, characterized in that the wiper head (25) (31) is articulated at the end of the pole around a horizontal transverse axis (26) with an intermediate damper (27) working in compression in both directions and of adjustable hardness to elastically absorb the forces between these two parts due to the defect in straightening of the overhead cable (f).  -9- socket outlet assembly according to claims 1 and 8 taken together, characterized in that in the first variant the wiper head (53) is mounted articulated around a horizontal axis (54), with intermediate damper , on a support (55) itself mounted at the front in articulation on a vertical axis (52) disposed in inclination between the branches of a yoke (56) mounted at the end of the pole (9) so as to reduce parasitic effects due to laces and turns. -10- Power outlet assembly according to claims 1 and 8 taken together, characterized word that in a second variant, the head (25) integral with the pole (9) is made in a single part of flexible resistance material, and forms at the right of its useful section a profiled and thinned thickness (251) to act by deformation and produce the damping effect; a metal insert (A) being housed in the material to avoid disintegration in the event of accidental rupture. -11- Power socket assembly according to claims 1, 8 and 9 taken together, characterized in that in the third variant, the axis joints (26) (52) with in this embodiment respectively the head (53) and the support (55) as well as the support (55) and the yoke (56) are established with a small dimension and coated with a flexible material such as a plastic material the thickness of which is a function of the applied forces -12- Socket set according to claims 1, 2, 3, -4, 5, 6, 7, 8, 9, 10 and 11, taken together, characterized in that the head (25) with ripper - (31) authorizes the fixing of a vertical axis (28), fixed or rotary, the upper part of which receives a horizontal transverse axis (29) on which the asymmetrical wiper carrier (30) is articulated receiving internally the profiled wiper (31) and straight constituting two spaced 2 spans (311 and 31) of contact on the overhead cable. -13- Set of. socket outlet according to claim 12, ca characterized in that variant, the fixed vertical axis (33), ball-shaped. (331) at its upper part for the position of the friction shoe (34) maintained in height by a circlip, during the time of exchange of the wiper and giving no function in normal service. -14- Socket assembly according to claims 12 and 3 taken together, characterized in that the friction shoe (30) has vertical and asymmetrical cheeks (301 - 302) inclined internally and transversely in the form of a V, for ensure self-centering on the overhead cable (f), and convex along their vertices asymmetrically, by forming horns to allow, during the vertical pressurization, the recall of said friction shoe (30) in the axis of said cable (f); in the event of an unfavorable position, the aforementioned wiper can be prepared automatically by an inclined position relative to its horizontal axis of articulation given by an imbalance in mass. -15- Socket assembly according to claims 12, 13 and 14 taken together, characterized in that the wiper (31) is centered and removably fixed in the wiper by a pin spring (32) of which the lateral branches bear on the shoulders (313) of the said wiper and at the base on sloping faces (314) of the axial opening of the wiper. -16- Socket set according to claims 12, 13, 14 and 15 taken together, characterized in that as a variant the friction shoe (34) is established with a hinged cover (35) held by screws (37 ) to embed the wiper which is positioned axially and maintained by means of two extreme leaf springs (38) cut into a U shape. -17- Socket set according to claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, Il 12, 13, 14, 15 and 16 taken together, characterized in that the cylinder (17) for controlling the pole is connected by one or two opposite chambers (171 and 172) to a pipe (39) passing through fluid distributors (40 - 401 ~ 402) and leading to a detector (42) diaphragm (43) whose displacement given by the abrupt piercing creating an additional compression of the fluid in one direction, allows in combination with the art of electrical supply by loss of contact with the overhead cable, to control the closing of an internal electrical circuit for authorizing the pressurization of the jack (17) for the control of the folding of the pole (9) downwards and its axial centering relative to the vehicle -18- Power socket assembly according to claim 17, characterized in that the pressurization of the jack (17) during the control of folding of the pole, as also on the supply of the jack (24) for the clutch control of the conical crown (19) secured to the pole holder support (15) or -19- Power socket assembly according to claims 17 and 18 sockets assembly, characterized in that after stopping the simultaneous supply of the jacks, the upper jack (17) for controlling the pole (9) is purged at a reduced flow rate to allow the latter to rise slowly and its orientation horizontal by the independent switching on of the engine (M) by the driver, so as to allow the positioning of the wiper (31) on the overhead cable (f), an optical means making it possible to view the overhead line from the inside from the vehicle cabin. -20- Socket set according to claims 17, 18 and 19 taken together, characterized in that after the reperchage, the purge of the jacks (17-24) allows on the one hand the pressure contact of the wiper ( 31) on the aerial cable (f) by means of the return springs (12) towards the top of the pole and on the other hand the opposite movement of the fork (23) with a view to disengaging the conical crown (19 ) by moving away from the bevel wheel (20), or from the slide. - 21 - Socket assembly according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20, characterized in that the vehicle cockpit comprises a control panel with in particular an operating lever (48) for controlling the distributor (45), a switch (1) for starting the engine (M ) and a push button (C2) for resetting the various circuits to their initial state after recycling.