Transferring carriage of vehicles for an automatic mechanic parking system

Abstract

Transferring carriage (100) of vehicles for automatic mechanic parking systems comprising at least a frame (1); means of handling of said carriage (100); and at least a device (13) of centering raising and keeping up of the wheel (32) of a vehicle said device (13) comprising at least a couple of clamp elements (17) and at least a movable support (14); each couple of clamp elements (17) being supported by said movable support (14); said movable support (14) being transversally translatable for positioning said clamp elements (17) of a same couple in proximity of a wheel (32) of an axle of a vehicle such that the centering raising and keeping up of the two wheels (32) of an axle of a vehicle is achieved by means of a single transversal movement towards outside of the carriage of said at least one movable support (14) and of the couple of clamp elements (17) integral therewith.

Description

"Transferring carriage of vehicles for an automatic mechanic parkingsystem"Field of the inventionThe present invention concerns the field of the automatic mechanic parkingsystems. In detail, the present invention concerns a vehicles transferring carriagefor a mechanic automatic parking system.Background artIn the mechanic automatic parking systems, the vehicles are left by the user in anentrance / exit room and from here automatically moved in the parking place timeby time assigned, by means of transferring devices.It is known in said parking systems to have a vehicles transferring device,generally composed by one or two transferring carriages, onto which the car tobed or to be extracted from the parking is loaded. The transferring carriage isnormally positioned on a vertically and / or horizontally translating platformthrough which it can be moved into the required position, on the same level or ondifferent levels of the parking.From said position, the carriage is capable of transferring the vehicle, bringing itfrom the platform it finds itself to another position, on another translatingplatform, in the exit rooms or in the park places, as well as it is able to transferthe vehicle by bringing it from another place, on different translating platforms,in the entering rooms or in the park places, for positioning it on the platform ontowhich it finds itself. The cyclic movement is always of a back and forth type, inthe sense that it moves from its platform up to another position for taking orleaving a vehicle for then coming back to the platform with or without thevehicle.The following documents describe some known automatic mechanic parkingsystems: US 4968208, KR 100696296, EP 1373666, KR100622553.The applicant has observed that the known carriages, generally, do not realize thecentering, taking and raising of the wheels of the car with a single device,thereby resulting complex and expensive to produce.The document DE 198 42 084 (Stolzer) shows a transferring carriage comprisinga frame, means of handling of said carriage and some devices for taking, raisingand centering the wheels of a vehicle, wherein the respective movements arerealized in different times and with a plurality of devices. In particular, while thetaking and the raising of the wheels of the vehicle are realized by the transversalmotion of the slides (26) and rotatory of the grippers (28) (29), the centering ofthe wheels takes place subsequently by means of an alignment of a centralsupport (30) with respect to the longitudinal axis of the transferring carriage. Thiscauses a dilation of the times of centering vehicle and necessitates of a pluralityof different actuators.Furthermore, document DE 198 42 084 shows a transferring carriage (20)suitable for sliding in a trench (18) existing between the supporting wedges ( 11)of the wheels of the vehicle. The devices for the taking and the raising of thewheels of the vehicle are positioned over the frame (21) of the carriage (20) foravoiding colliding, during their transversal motion, with said frame (21). Fromthis derives a complexity and size of the transferring carriage shown in theaforementioned document due to which this last could not pass under the vehicleif said trench was not present. Consequently, its use requires realizing particularbuilding constructions.Furthermore, the applicant has noticed that the carriages for known mechanicalparking systems do not allow centering, taking and raising the wheels of the carwith a single movement that is continuous and composed by means of a singledevice.The applicant has, furthermore, noticed that the carriages for known systems ofmechanic parking do not allow to reduce satisfactorily the volume that isrequired for storing vehicles in the automatic mechanic parking systems.Summary of the inventionAccording to the present invention, it is therefore realized a transferring carriageof vehicles for automatic mechanic parking systems comprising:- at least a frame;- means of handling of said carriage; and- at least a device of centering, raising and keeping of the wheel of a vehicle;- said device comprises at least a couple of clamp elements and at least amovable support; each couple of clamp elements being supported by saidmovable support;- said movable support being transversally translatable for positioning said clampelements of a same couple in proximity of a wheel of an axle of a vehicle;- said transferring carriage being characterized in that the device of centering,raising and keeping of the wheel of a vehicle is shaped for performing, thecentering, the raising and the keeping of the two wheels of an axle of a vehicle bymeans of a single transversal movement towards outside of the carriage of themovable supports and of the couples of clamp elements integral therewith.The applicant considers that not only the width necessary to the recovery of avehicle is minimized by the automatic centering, but also the height that isnecessary to the recovery of the vehicle is minimized thanks to the low thicknessof the carriage according to the invention. The carriage according to the presentinvention can be, in fact, inserted below the vehicle without raising this last withrespect to the sliding plane of the carriage itself. Another advantage is constitutedby the simplicity of the carriage that by performing the centering, taking andraising of the wheels with a single devices, results lights and economic.In the context of the present invention:- For "longitudinal direction" or "longitudinally" it is intended a directiongenerically directed to the sense of motion of the driving wheels of the carriage.- For "transversal direction" or "transversally" it is intended a direction or in anorthogonal direction with respect to the longitudinal axis of the carriage.- For counter inclined with reference to two inclined planes, it is intended that thetwo planes present with respect to an axis interposed between them the sameinclination in absolute value, but with an opposite sign.- For "composed movement" it is intended a movement of a plurality of parts ofthe transferring carriage object of the present invention, being performed insubstantial continuous temporal sequence. In details it refers to the transversalmovement of the movable supports and the rotation movement of the couples ofclamp elements thereto integral which are operated by a single transversalmovement of the device (13) of centering, raising and keeping of the wheel.The present invention, in the aforementioned aspect, it can present at least one ofthe preferred features that are hereinafter described.Preferably, the frame can comprise at least two movable supports, counterposedwith respect to a longitudinal axis of the carriage; the movable supports beingtranslating with respect to the longitudinal axis of the carriage between a restingclosed position and a open working position, said open position beingtransversally arranged more externally with respect to said closed position.Conveniently, the open position changes according of the vehicle to betransported.Preferably, the open position changes according to the transversal distance insidethe tires of the wheels of an axle of the vehicle to be transported.Conveniently, the open position is such that once the vehicle is centered, thelongitudinal axis (X-X) of the carriage coincides with the longitudinal axis of thevehicle to be transported. Advantageously, the clamp elements of each couple areopposed with respect to a transversal direction Y-Y of said carriage and beingrotatable around a rotation axis between a resting position and a closure positionwherein they are disposed substantially faced one to the other.Preferably, each clamp element comprises:- at least an arm comprising at least a inclined plane; said at least a arm beingpivoting between an open position and a closed position substantially orthogonalto the longitudinal axis of the carriage.- at least a lip functionally connected to said at least a arm and shaped so as towhen being pressed against a tyre of a wheel of a vehicle, tends to rotate the armfrom said open position towards said closed position. Conveniently, each armcomprises a plurality of rollers arranged on said inclined plane; the inclinedplanes two clamp elements of the same couple being counter inclined, when saidarms are in said closure position.Advantageously, the carriage can comprise a translation group of said movablesupport comprising:- at least a worm screw;- at least a geared motor operatively connected to said at least a worm screw fordriving its rotation; and- at least a pulling anchor.Preferably, each pulling anchor comprises:- at least a cross head nut in coupling with said worm screw; and- at least a quill provided with a crossbeam at whose ends two pushing rods arehinged.Advantageously, each pushing rod is hinged to an end of a said clamp element soas to the axis of each pushing rod passes for the rotation axis of each clampelement when the clamp elements of each couple are in resting position.Preferably, the carriage comprises two worm screws rotationally actuated by saidgeared motor; of said two worm screws a first presenting a right-handedthreading, while to other presenting a left-handed threading; the inverse rotationof the two worm screws axially moves the two pushing anchors towards outsideor towards inside of the carriage.Conveniently, the frame comprises at least a crossbeam wherein a movablesupporting element can slide.Preferably, each movable supporting element comprises two tines externallyarranged with respect to a crossbeam, each prong sliding in a crossbeam of theframe.According to another aspect, the present invention concerns a vehiclestransferring device for automatic mechanic parking systems comprising twotransferring carriages as previously described, arranged one following the otherin longitudinal direction and eventually coupled.Advantageously, the device of centering, raising and keeping of the wheel lies ona same horizontal plane, fundamentally coinciding with the one of the frame ofthe carriage.According to the present invention it is furthermore realized a method ofhandling of a vehicle in an automatic mechanic parking, said method comprising:- a step of electronic command of the handling of a couple of transferringcarriages of vehicles for systems of automatic mechanic parking along alongitudinal axis wherein said couple of transferring carriages is stopped whendevices of centering, raising and keeping of the wheel of a vehicle, said devicesbeing part of said transferring carriage, are in correspondence of a couple ofopposed wheels a same axle of the vehicle;- a subsequent step of electronic command of a motion of movable supports ofsaid transferring carriage along a direction which is transversal with respect tosaid longitudinal axis, said movable supports housing said device of centering;- wherein when exerting a reaction force of the wheel of the vehicle against saiddevice of centering, said device of centering automatically actuates clampelements which are installed on said movable support and that performsimultaneously a taking and a raising of the wheel, maintaining said couple oftransferring carriages axially aligned on said longitudinal axis.In an aspect of the present invention, said step of electronic command of themotion of said movable supports comprises a step of simultaneous motion of twoopposed centering devices.Furthermore, said method comprises a step of transmission of a stopping signalto a data processing unit supervising said electronic commands of motion of saidcouple of carriages; said stopping signal coming from position sensing meansand causing the automatic activation of the electronic command of activation ofsaid movable supports.Advantageously, finally, said movable supports push said counterposed centeringdevices in a symmetrical way.Brief description of the drawingsFurther features and advantages of the invention will be clearer from the detaileddescription of some preferred and not exclusive embodiments of a newtransferring carriage of vehicles for systems of automatic mechanic parkingaccording to the present invention.Said description will be hereinafter exposed referring to attached drawings,provided only for exemplificative and therefore non-limiting extent, wherein:- figure 1 is a schematic view from above of a transferring carriage for systems ofautomatic mechanic parking according to the present invention, in a first positionwith the movable supports retracted and the clamp elements in an open position;- figure 2 is a schematic view from above of the transferring carriage of figure 1in a second position with the movable supports being extracted and the clampelements in the closure position;- figure 3 is a schematic view in section of the transferring carriage of figure 1according to the section line A-A;- figure 4, is a schematic lateral view of the transferring carriage of figure 1 withthe clamp elements in the closure position;- figure 5 is a schematic lateral view of the transferring carriage of figure 1 withthe clamp elements in open position;- figures 6, 7, 8, 9 show sequential phases of the operations of centering, takingand raising of the wheels of an axle of a vehicle with the carriage according tothe present invention.Detailed description of the embodiments of the inventionReferring to figures 1-9, a transferring carriage of vehicles for systems ofautomatic mechanic parking according to the present invention, is identified withthe reference numeral 100.Referring to the embodiment shown in the figures the carriage is constituted by aframe 1 provided with supporting free wheels 2 and driving 3 suitable for slidingon a planar surface a surface 4, like the upper surface of a platform of verticaltranslation and / or horizontal translation of the car parking place.The free wheels 2 and driving 3 sustain the frame 1 that preferably presents twocrossbeams 5 jointed by a central linking 6.On the two crossbeams 5 are fixed two wheels 7 that drive the transferringcarriage in its translation motion.Preferably, the wheels 7 slide in a rectilinear channel 8 which is fixed to theplanar surface 4 of the position of parking.Preferably, the driving wheels 7 are elastically fixed to the crossbeams 5 bymeans of angular springs 9. The frame 1 is moved from a first geared motor 10that through the pinions 11 and the shaft 12 transmits the motion to the drivingwheels 3.A centering, taking and raising device 13 of two wheels of an axle of the vehicleis housed on the frame 1. On the frame 1, the devices of centering 13 arearranged two by two opposed one with respect to the other.Referring to embodiment shown in the figures , said device 13 of centering,taking or keeping and raising is composed by two movable supports 14 and bytwo couples of clamp elements 17, a couple for each movable support 14.Each movable support 14 is preferably U shaped and comprises two tines 34externally arranged with respect to a crossbeam 35, each prong 34 can slide in acrossbeam 5 of the frame 1.The tines 34 of each movable support 14, can transversally slide into thecrossbeams 5 by means roller wheels 15 which are guided on particular notchesobtained in the crossbeams 5.The movable supports 14 can translate between a resting closed position, shownin figure 1 to an open working position shown in figure 2 and vice versa.More in detail, the two movable supports 14 are opposed with respect to alongitudinal axis X-X of the carriage 100 and can translate with respect to thelongitudinal axis of the carriage X-X between a resting closed position, shown infigure 1, and an open working position, shown in figure 2. The open positionbeing arranged transversally more externally with respect to the closed position.The open position is not a fixed position that depends by the structure of thedevice 13, but a position which changes each time, and being determined by theinternal transversal distance between the tyres of the of the wheels of an axle ofthe vehicle to be transported.The transversal distance inside the tyres of the wheels of an axle of the vehicle tobe transported can be measured as the distance in the transversal distancebetween the two facing surfaces of the two wheels of an axle of the vehicle.In other words, it changes according of the vehicle to be transported. Forperforming the centering of the vehicle, each time said open position isdetermined in such a way that once the vehicle is centered, the longitudinal axisX-X of the carriage 100 coincides with the longitudinal axis of the vehicle to betransported.Each of the two movable supports 14 supports, in correspondence to one end acouple of clamp elements 17, each clamp element 17 can rotate of about 90°around a pin 18 which is fixed to the movable supports 14.Each clamp element 17 being constrained to the pin 18 by means of bearings 19.Always referring to the embodiment shown in the figures, it can be seen as theclamp element 17 is constituted by an arm 1 and by a lip20 that, when the clampelement 17 is in the open position, slightly protrudes transversally towardsoutside of the carriage 100.The lip 20 is associated to the arm 2 1 and is shaped so as to, when it is pressedagainst the tyre of a wheel 32 of the vehicle, tends to make the arm 2 1 rotate andconsequently the clamp element 17 itself, from the open position shown with adashed line in figure 2 towards said closed position shown in figure 2 with acontinuous line.Preferably, the arm 2 1 houses of the free rollers 22 arranged on an inclined planein such a way to force the wheel 32 of the vehicle, that is grasped simultaneouslyby a couple of clamp elements 17, to raise.For that purpose, the inclined planes of two clamp elements 17 of the samecouple are counterinclined, when the arms 2 1 of the same couple of clampelements 17 are in closure position.The device 13 of centering, raising and keeping of the wheel 32 of a vehicle iscapable of performing the raising and the rigid keeping of the two wheels 32 ofan axle of the vehicle by means of a single transversal movement towards outsideof the carriage of the movable supports 14 and of the couples of clamp elements17 integral therewith.In such a way, the frame 1 always rests axially oriented along the longitudinalaxis X-X of the carriage 100. This advantageously allows to use the presentinvention in closed spaces like the modern underground car parks, wherein thecarriages are made sliding on guiding rails and for which saving the lateral spacenecessary for letting the carriages pass is of a fundamental importance. Thecarriage 100 enjoys greater compactness also in height with respect to thesolutions that were protected in the known art, also because the complex andunique motion which is operated by the device 13 of centering, raising andkeeping of the wheel rests fixed on a same horizontal plane, fundamentallycoinciding with the one of the frame (1) of carriage, and does not change height.The carriage 100 furthermore does not necessitate of a trench, passing under thevehicle by laying on the road plane or the pavement.In this extent, the transversal motion of the U-shaped movable supports 14 isperformed by means of a second geared motor 23 and by the pinions 24 thereof,which make rotate two worm screws 25.Advantageously, therefore, only two geared motors are present, of which a firstgeared motor 10 - is devoted to translate longitudinally the carriage 100 alongthe longitudinal axis X-X, while the second - second geared motor 23 - isentirely devoted to control of the transversal motion of the movable supports 14.The geared motors are electrically controlled by a data processing unit thatadvantageously is configured for driving in sequence first the first geared motor10 for the positioning in correspondence of the wheels of the vehicle andsubsequently for driving the second geared motor 23 for the transversal motionof the movable supports 14.Referring to the embodiment shown in figure, it can be seen that - of the twoworm screws 25 - one has right-handed threading, while the other has lefthandedthreading.The inverse rotation of the two worm screws 25 moves, preferablysymmetrically, two pushing anchors 26 towards the outside or towards the insideof the carriage 100.Preferably, each pushing anchor 26 is constituted by a cross-head nut 27 and by aquill with crossed crossbeam 28 at whose ends are fixed pins 29 onto which twopushing rod 30 are hinged.The two pushing rods 30 are hinged at the opposite end of the pins 3 1 of eachcouple of clamp elements 17.The pushing anchors 26 axially move towards inside or outside of the carriage100 the movable supports 14 and consequently the couples of clamp elements 17integral therewith.Moving transversally towards outside, the movable supports 14 bring the the lips20 to stop against lo tyre of the wheel of the vehicle 32 and when the lips 20axially push towards outside the tyre of the wheel of the vehicle 32 by triggeringthe rotation of the clamp elements 17 of each couple and consequently the takingand the raising of the wheel of the vehicle 32.When the user conducts the vehicle into the entering room for the automaticparking, he leaves the vehicle itself in an area which is specifically delimited.The position of the vehicle axles can be detected using known devices like loadcells, photocells, photoelectric cells barriers, laser scanners, cameras or others.Since the carriage 100 according to the present invention can raise two wheels 32of an axle, the operation of transferring of a vehicle shall be realized by usingtwo carriages 100 according the present invention, arranged in sequence in thelongitudinal direction and, eventually, specifically connected each other.In a first step, each carriage 100 will be positioned, by means of a control of theposition and of motion realized with known methods, in such a way to have theown transversal axis coinciding in the neighborhood of the axle of a couple ofwheels 32 of the vehicle.The position of the two wheels 32 of the vehicle, being normally the longitudinalaxis of this last not coinciding with the longitudinal axis of the carriage 100, willbe such that, as shown in Fig. 6, each wheel will have a distance from thelongitudinal axis of the carriage 100 which is different from the other one'sdistance.In the figures 6-9 are shown, by way of example and schematically, some phasesof centering, raising and keeping of the two wheels 32 of an axle of a vehiclewith the carriage 100 yet described.In detail, in figure 6 the carriage 100 is positioned under the vehicle.At this point, through the symmetrical pushing towards outside of the twodevices 13, the operation of centering, raising and keeping of the wheels isstarted.In a second and subsequent phase, one of the two devices 13 of centering, raisingand keeping encounters first a wheel 32 (Fig. 7) and, pushing it and exerting on ita transversal force with respect to the longitudinal axis X-X, it moves the wheelup to the moment in which the second device 13 of centering raising and keepingfinds the second wheel 32 (Fig. 8).Not being able to move further the second wheel 32 towards outside, being thetransversal internal distance among the wheels 32 fixed, and consequently notbeing able to move neither the first wheel 32, the devices 13 of centering, raisingand keeping actuate, in the continuity of motion of the pushing anchors 26, therotation movement of the clamp elements 17 of the two couples.In particular, the rotation movement of the clamp elements 17 of each couple istriggered by the reaction force exerted by the wheels 32 on the lips 20.Said reaction force, making the clamp elements 17 slightly rotate around the pins18, provides that the axis of the pushing rods 30 instead of passing by the axis ofthe pin 18, around which the clamp elementsl7 rotate, moves slightly so as tocreate a couple that triggers a rotation movement of the clamp elements 17 andthat increases always more with the rotatory movement of these last up toobtaining the raising of the wheels 32, as shown in figure 9.The Fig. 9 shows the final position of raising of the two wheels 32 of an axle ofthe vehicle and the keeping, by means of the final part of the U-shaped movablesupports 14 of the wheels 32 against longitudinal movements provoked by theaccelerations during the transportation of the vehicle.The present invention has been described referring to some embodiments.A plurality of modifications can be brought to the herewith describedembodiment, by resting anyway into the scope of protection of the invention,defined by the following claims.

Claims

Claims1. Transferring carriage (100) of vehicles for automatic mechanical parkingsystems comprising:- at least a frame (1);- means of handling of said carriage (100); and- at least a device (13) of centering, raising and keeping of the wheel (32) ofa vehicle;- said device (13) comprises at least a couple of clamp elements (17) and atleast a movable support (14); each couple of clamp elements (17) beingsupported da a said movable support (14); said movable support (14) beingtranslatable transversally for positioning said clamp elements (17) of a samecouple in proximity of a wheel (32) of an axle of a vehicle;- said transferring carriage (100) being characterized in that the device (13)of centering, raising and keeping of the wheel (32) of a vehicle is designedfor performing, the centering, the raising and the keeping of the two wheels(32) of an axle of a vehicle by means of a single transversal movementtowards outside of the carriage of the movable supports (14) and of thecouples of clamp elements (17) integral therewith.

2. Transferring carriage (100) according to claim 1, characterized in that saidframe (1) comprises at least two movable supports (14), opposed with respectto a longitudinal axis (X-X) of said carriage (100); said movable supports(14) being translating with respect to the longitudinal axis of said carriage(X-X) between a resting closed position and an open working position, saidopen position being transversally arranged more externally with respect tosaid closed position.

3. Transferring carriage (100) according to claim 2, characterized in that:- said open position varies according to the inner transversal distancebetween the tyre of the wheels of an axle of the vehicle to be carried;- said open position is such that, once the vehicle is centered, saidlongitudinal axis (X-X) of the carriage (100) coincides with the longitudinalaxis of the vehicle to be carried.

4. Transferring carriage (100) according to any of the preceding claims,- the clamp elements (17) of each couple are opposed with respect to atransversal direction (Y-Y) of said carriage (100) and rotatable around arotation axis (18) between a rest position and a closed position in which theyare substantially facing one another.

5. Transferring carriage (100) according to claim 4, characterized in that eachclamp element (17) comprises:- at least an arm (21) comprising at least a inclined plane; said at least an arm(21) being rotating between an open position and a closed position,substantially orthogonal to the longitudinal axis (X-X) of said carriage (100)- at least a lip (20) functionally connected to said at least an arm (21) andshaped so that when it is pressed against a tyre of a wheel (32) of a vehicle, iturges the arm (21) from said open position towards said closed position.

6. Transferring carriage (100) secondo the claim 5, characterized in that each arm(21) comprises a plurality of rollers (22) arranged on said inclined plane; theinclined planes of two clamp elements (17) of the same couple beingcounterinclined, when said arms (21) are in said closed position.

7. Transferring carriage (100) according to any of the preceding claims,characterized in that a translating assembly of said movable support (14)- at least a worm screw (25);- at least a geared motor (23) operatively connected to said worm screw (25)for drive the rotation thereof; and at least one pushing anchor (26).

8. Transferring carriage (100) according to claim 7, characterized in that eachpushing anchor (26) comprises:- at least a nut screw (27) in coupling with said worm screw (25); and at leasta quill provided of a crossbeam (28) at whose ends two pushing rods (30) arehinged.

9. Transferring carriage (100) according to claim 8, characterized in that eachpushing rod (30) is hinged at another end, to said clamp element (17) so as tothe axis of each pushing rod (30) passes for the rotation axis (18) of eachclamp element (17) when the clamp elements (17) of each couple are inresting position.

10. Transferring carriage (100) according to claim 9 characterized in that itcomprises two worm screws (25) rotated by said geared motor (23); one ofsaid two worm screws (25) having a right-handed thread, whereas the otherhas a left-handed thread; the opposed rotation of the two worms (25) movesaxially said two pushing anchors (26) to the outside or the inside of saidcarriage (100).

11. Transferring carriage according to any of the preceding claims, characterizedin that said frame (1) comprises at least a crossbeam in which a movablesupporting element (14) can slide.

12. Transferring carriage according to any of the preceding claims characterizedin that each movable supporting element (14) comprises two tines (34) whichare arranged on the outside of a crossbar, each tine sliding in a crossbar ofsaid frame (1).

13. Transferring carriage of vehicles for systems of automatic mechanic parkingsystems comprising two transferring carriages (100) according to any of thepreceding claims from 1 a 12, which are arranged one after another along thelongitudinal direction.

14. Transferring carriage according to any of the preceding claims, characterizedin that the device (13) of centering, raising and keeping of the wheel lines ona horizontal plane, fundamentally coinciding with the one of the frame (1) ofthe carriage.

15. Method of motion of a vehicle in an automatic mechanic parking, saidmethod comprising:- a step of electronic command of the motion of a couple of transferringcarriages (100) of vehicles for automatic mechanic parking systems along alongitudinal axis (X-X), wherein said couple of transferring carriages isstopped when devices (13) centering, raising and keeping of the wheel (32)of a vehicle, said devices (13) of centering being part of said transferringcarriage (100), are in correspondence of a couple of wheels (32) which areopposed and of a same axis of the vehicle;- a subsequent step of electronic command of a motion of movable supports(14) of said transferring carriage (100) along a traversal direction withrespect to said longitudinal axis (X-X), said movable supports (14) housingsaid device (13) of centering; wherein when exerting a force of reaction ofthe wheel (32) of the vehicle against said device of centering (13), saiddevice of centering (13) actuates automatically clamp elements (17) installedon said movable support (14) and that performs at the same time a taking anda raising of the wheel (32), maintaining said couple of transferring carriages(100) axially aligned on said longitudinal axis (X-X).

16. Method according to claim 15, characterized in that said step of electroniccommand of the motion of said movable supports (14) comprises a step ofsimultaneous motion of two opposed devices of centering (13).

17. Method according to any of the preceding claims 15-16, characterized in thatit comprises a step of transmission of a stopping signal to a data processingunit supervising said electronic commands of motion of said couple ofcarriages (100); said stopping signal coming from sensing means of positionand causing the automatic activation of the electronic command of saidmovable supports (14).

18. Method according to any of the preceding claims 15-17, wherein saidmovable supports (14) push said opposed devices of centering (13)symmetrically.