Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
  • B60L5/36—Current collectors for power supply lines of electrically-propelled vehicles with means for collecting current simultaneously from more than one conductor, e.g. from more than one phase
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
  • B60L5/40—Current collectors for power supply lines of electrically-propelled vehicles for collecting current from lines in slotted conduits
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
  • B60M1/00—Power supply lines for contact with collector on vehicle
  • B60M1/30—Power rails
  • B60M1/34—Power rails in slotted conduits

Definitions

• the present invention relates to a device for effecting electric drive of heavy trucks, said device comprising on one hand a current transmission means and on the other hand an airborne supporting girder that holds conductor rails, that the current transmission means comprises guiding means that may assume an inactive position and an active position, that the supporting girder comprises a bottom opening through which opening the current transmission means may pass when the guiding means assume an inactive position, that the supporting girder comprises grooves, that the guiding means and the grooves cooperate when the guiding means assume active
• the invention also relates to a method for effecting electric drive of heavy trucks.
• a current collector is previously know, said current collector being carried by a vehicle.
• the current collector may be temporarily connected to a current conductor arranged along the route of the vehicle. However, the temporary connection may only be established at certain locations of the current conductor.
• a current transmission means of the system may assume an inactive position and an active position. In the inactive position the current transmission means may be inserted into an airborne supporting girder. In the active position a complete docking of the current transmission means in the supporting girder is effected.
• a device for current supply to vehicles is previously known, said vehicle being equipped wi current collectors that are brought in contact with current carrying wires that extend transverse to the direction of travel of the vehicle.
• a primary object of the present invention is to present a device and a method of the kind defined in the introductory part of the description, the switching in and the switching out of the electric drive is to be effected in an easy and reliable way during operation.
• a further object of the present invention is to
• the current transmission means comprises guiding means that are adapted to cooperate with the conductor rail and that the guiding means are structurally simple and thus also quite functional .
• Fig. 1 discloses a schematic side view of a part of a device according to the present invention, a vehicle being connected to the device to effect electric drive of the vehicle;
• Fig. 2a discloses a schematic end view of a supporting girder and a current transmission means that is about to dock in the supporting girder
• Fig. 2b discloses a corresponding end view as in Fig. 2a where the current transmission means is partly received in the supporting girder;
• Fig. 2c discloses a corresponding end view as in Fig. 2a where the current transmission means is completely docked in the supporting girder;
• Fig. 3 discloses a schematic side view where the current
• transmission means is docked in the supporting girder, and that for clarity reasons certain parts have been omitted;
• Fig. 4 discloses a schematic side view of a current
• Fig. 5a discloses a first view along V-V in Fig. 4.
• Fig. 5b discloses a second view along V-V in Fig. 4.
• the vehicle shown in Fig. 1 constitutes a long-distance lorry 1 that comprises a truck 3 and a trailer 5.
• the truck 3 is equipped with a trolley arm that is both articulated and telescopic.
• the trolley arm 7 is equipped with control means, e.g. pressure medium cylinders, electric motors, that enables the free end of the trolley arm 7 to be displaced vertically but also sidewards.
• control means e.g. pressure medium cylinders, electric motors
• transmission means 9 may be connected with the conductor rails 10 that are provided inside an airborne supporting girder 11 that extends along the route that the vehicle 1 travels.
• the conductor rails 10 are current carrying.
• the supporting girder 11 is supported by poles 12 at suitable mutual distance. Further supporting means may be arranged to achieve proper support of the supporting girder 11.
• the current transmission means 9 comprises a contact module 15 that at its upper end has a corrugated configuration with projecting ridge portions 16 and first grooves 17 located between the ridge portions 16.
• the ridge portions 16 and the first grooves 17 generally extend in the travelling direction of the vehicle.
• wear surfaces 18 are provided, said wear surfaces 18 preferably being made out of graphite.
• the contact module 15 has three ridge portions 16 and two intermediate grooves 17.
• the contact module 15 is two-parted with a telescopic function, i.e. an upper part 15a of the contact module 15 is displaceable relative to a lower part of the contact module 15, this displacement takes place in vertical direction when the contact module 15 has assumed the position according to Fig. 2b.
• the displacement of the upper part 15a is preferably effected by pressure medium operated means, e.g. a pressure medium cylinder (not shown) .
• the lower part of the contact module 15 is penetrated by an axle arrangement 20 that also generally extends in the travelling direction of the vehicle. According to the
• the axle arrangement 20 has an extension on both sides of the contact module 15.
• Two guiding means are mounted on the axle arrangement 20, each of said guiding means comprising two supporting arms 23, supported by the axle arrangement 20, and rotatable guiding wheels 22 supported by the supporting arms 23 that are pivotally mounted on the axle arrangement 20.
• the connections of the supporting arms 23 to the axle arrangement 20 are mutually displaced in the
• the axle arrangement 20 also comprises some kind of actuator means to pivot the supporting arms 23 relative to the axle arrangement 20. These actuator means are preferably pressure medium activated.
• actuator means are preferably pressure medium activated.
• the current transmission means 9 is also equipped with a GPS-antenna 25 that locates the current transmission means 9 in correct position vis-a-vis the supporting girder 11.
• the current transmission means 9 is equipped with a radar unit 26 that is mounted on a guiding plate 27 that facilitates the docking of the current transmission means 9 in the supporting girder 11. According to the disclosed
• the current transmission means 9 is equipped with a further guiding plate 27, said guiding plates 27 being located in the area of the respective ends of the current transmission means 9.
• the contact module 15 is mounted on a supporting plate 28 that is pivotally connected to the trolley arm 7 that in Fig. 3 is represented by two link rods 29 that are pivotally connected to the supporting plate 28.
• the supporting girder 11 generally has the shape of a U turned upside down.
• the shanks of the U are bent inwards in the area of the free ends of the shanks and thereby second, interior grooves 30 are created in the area of the lower, longitudinal edge of the supporting girder 11. Between the shanks of the U a bottom opening 31 of the supporting girder 11 is created.
• conductor rails 10 are mounted, said counductor rails 10 extending in the longitudinal direction of the supporting girder 11.
• the conductor rails 10 are provided in a supporting unit 8 that has a corrugated configuration where the conductor rails 10 are provided in third grooves 32.
• the corrugated configurations of the supporting unit 8 and the contact module are designed in such a way that they match into each other.
• the vehicle 1 is travelling on a road and a supporting girder 11 with a conductor rail 11 extends along the road.
• the trolley arm 7 is initially in a lowered inactive position.
• the electric drive of the vehicle is to be switched in the trolley arm 7 is activated and it approaches upwards towards the supporting girder 11.
• the current transmission means 9 is oriented in correct position relative to the supporting girder 11, i.e. the current
• transmission means 9 is located directly below the supporting girder 11, see Fig. 2a.
• Fig. 2c shows a mutual position between the current transmission means 9 and the supporting girder 11
• corrugated configurations guarantees that there is a mutual, lateral guiding between the current transmission means 9 and the supporting girder 11.
• the cooperation between the guiding wheels 22 and the second grooves 30 contributes to the lateral guiding.
• the driving means constitute pressure medium cylinders 135, preferably pneumatic cylinders. From Fig. 4 it is evident that the pressure medium cylinders 135 are located at a certain distance from each other in the longitudinal direction of the device.
• the pressure medium cylinders 135 are, via bars 134 at the lower side of the pressure medium cylinders 135, pivotally connected to supporting rods 150 that in their turn are fastened to the current transmission means 109 according to the present invention.
• axle arrangement 120 where one supporting arm 123 is supported by an internal axle 136 of a smaller diameter and the second supporting arm 123 is supported by an external, hollow axle 137 of a larger diameter.
• the operating arms 138, 140 are rigidly connected to the axles 136 and 137 respectively while the operating arms 138, 140 are pivotally connected to the piston rods 139. From Fig. 5a and 5b it is evident that a portion of the material in the external axle 137 is removed in the area of the connection of the first operating arm 138 to the internal axle 136. By this arrangement the first operating arm 138 is allowed to move a certain angle during actuation from the adherent pressure medium cylinder 135.
• FIG. 5a and 5b A comparative examination of Fig. 5a and 5b brings about that by activation of the pressure medium cylinders 135 the axles 136 and 137 are performing a mutual rotation. Since the supporting arms 123 are rigidly connected to the axles 136 and 137 the supporting arms 123 will be transferred between folded position and expanded position during this mutual rotation of the axles 136 and 137.
• transmission means is equipped with guiding wheels 22 that abuts second grooves 30 of the supporting girder 11.
• guiding wheels 22 that abuts second grooves 30 of the supporting girder 11.
• the friction between the non-rotating guiding means and the second grooves 30 is kept extremely low. This is achieved by suitable selection of material in the surfaces that contact each other.
• the transmission means 9 is equipped with a GPS-antenna 25 and a radar unit 36 to take care of correct entering of the current transmission means 9 in the supporting girder 11. This is only an example of a suitable combination of entering means. Within the scope of the present invention it is feasible that the current transmission means 9 is equipped with a GPS-antenna 25 only or with a radar unit 26 only. Also other types of
• said means should only be regarded as a possible example of such driving means.
• said means could be designed in a number of different ways.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Power Engineering (AREA)
• Transportation (AREA)
• Current-Collector Devices For Electrically Propelled Vehicles (AREA)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

Country Status (3)

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• 2013
  • 2013-01-18 SE SE1300050A patent/SE536908C2/sv unknown
• 2014
  • 2014-01-16 EP EP14740298.6A patent/EP2945815A4/de not_active Withdrawn
  • 2014-01-16 WO PCT/SE2014/000005 patent/WO2014112926A1/en active Application Filing

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