NL2022586B1 - Current collecting assembly, current collector and current conducting rail for use therein - Google Patents
Current collecting assembly, current collector and current conducting rail for use therein Download PDFInfo
- Publication number
- NL2022586B1 NL2022586B1 NL2022586A NL2022586A NL2022586B1 NL 2022586 B1 NL2022586 B1 NL 2022586B1 NL 2022586 A NL2022586 A NL 2022586A NL 2022586 A NL2022586 A NL 2022586A NL 2022586 B1 NL2022586 B1 NL 2022586B1
- Authority
- NL
- Netherlands
- Prior art keywords
- current
- collector
- rail
- leg
- arm
- Prior art date
Links
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
- B60L5/38—Current collectors for power supply lines of electrically-propelled vehicles for collecting current from conductor rails
-
- 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
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention relates to a current collecting assembly for mobile installations, such as travelling bridge cranes, comprising a current collector and a current conducting rail, the current conducting rail comprising a rail housing having a bottom, a first leg extending from the bottom in a height direction substantially perpendicular‘ to the bottom, and. a second. leg extending from the bottom in the height direction, wherein the bottom, first leg and second leg define a substantially U— shaped conductor space, the current conducting rail further comprising' a current conductor received. within the substantially U—shaped conductor space, wherein the current collector is configured for moving along the current conducting' rail in a movement direction and. comprises a carbon brush configured for being inserted into the substantially U4shaped conductor space and for contacting the current conductor to collect electrical energy, wherein each of the first leg and the second leg, at an end facing away from the bottom, is provided with a top side orientated at an angle with respect to the height direction, and wherein the current collector comprises two or more guides for guiding the current collector along the current conducting rail, each. of the two or more guides comprising a contact surface for contacting the top side of one of the first and second legs, wherein each contact surface is substantially parallel to the respective top side when the current collector is arranged at the current conducting rail.
Description
NLP204164A CURRENT COLLECTING ASSEMBLY, CURRENT COLLECTOR AND CURRENT
BACKGROUND The invention relates to a current collecting assembly for mobile installations, such as travelling bridge cranes, comprising a current collector and a current conducting rail. The invention further relates to a current collector and current conducting rail for use in such a current collecting assembly. Moreover, the invention relates to a method for installing a current collecting assembly. Current collecting assemblies as such are well known. Such a known current collecting assembly comprises a current conducting rail having a rail housing with a bottom extending in the longitudinal direction of the current conducting rail, a first leg extending from the bottom in a height direction substantially perpendicular to the bottom, and a second leg extending from the bottom in the extension direction. The bottom, first leg and second leg define a substantially U-shaped conductor space. The current conducting rail further comprises a current conductor received within the substantially U-shaped space. The current conducting rail is assembled from multiple segments of rail housing each with a segment of current conductor received therein. The known current collecting assembly further comprises a current collector configured for moving along the current conducting rail and comprising a carbon brushconfigured for being inserted into the substantially U- shaped conductor space and for contacting the current conductor such that electrical energy is collected by the current collector while the current collector moves along the current conducting rail.
SUMMARY OF THE INVENTION In practice, the current conducting rail is often orientated such that the substantially U-shaped conducting space opens in a horizontal direction. A disadvantage of the known current collecting assembly is that the current collector, under influence of gravity, has the tendency to sag during use. Due to the current collector sagging, the carbon brush thereof, during movement of the current collectors, in particular a side surface of the carbon brush, contacts one of the first leg and the second leg while the current collector moves along the current conducting rail. Because of the contact between the carbon brush and one of the first leg and the second leg, the carbon brush is subject to additional wear. Due to the additional wear, more dust particles, i.e, particles of the carbon brush, will appear on the current conductor, thereby reducing the efficiency of electrical energy collecting.
It is an object of the present invention to provide an improved current collecting assembly, or to provide an alternative current collecting assembly.
According to a first aspect, the invention provides a current collecting assembly for mobile installations, such as travelling bridge cranes, comprising a current collector and a current conducting rail, the current conducting rail comprising a rail housing having a bottom, a first leg extending from the bottom in a height direction substantially perpendicular to the bottom, and a second leg extending from the bottom inthe height direction, wherein the bottom, first leg and second leg define a substantially U-shaped conductor space, the current conducting rail further comprising a current conductor received within the substantially U- shaped conductor space, wherein the current collector is configured for moving along the current conducting rail in a movement direction and comprises a collecting brush, such as a carbon brush, configured for being inserted into the substantially U-shaped conductor space and for contacting the current conductor to collect electrical energy, wherein each of the first leg and the second leg, at an end facing away from the bottom, is provided with a top side orientated at an angle with respect to the height direction, and wherein the current collector comprises two Oor more guides, arranged at opposites sides of the collecting brush, for guiding the current collector along the current conducting rail, each of the two or more guides comprising a contact surface for contacting the top side of one of the first and second legs, wherein each contact surface is substantially parallel Lo the respective top side when the current collector is arranged at the current conducting rail.
During use of the current collecting assembly, the current collector is placed onto the current conducting rail, such that the carbon brush is in contact with the current conductor, and a first one of the two or more guides is in contact with the top side of the first leg and a second one of the two or more guides in in contact with the top side of the second leg. Because of the top sides being orientated at an angle with respect to the height direction of the current conductor rail and each of the two or more guides being parallel to the respective top side onto which the respective guide is placed, the current collector under influence of an external force, such as gravity, is forced into an equilibrium position in whichthe contact area between one of the guides and the top side of the first leg is substantially equal to the contact area between another one of the guides and the top side of the second leg. When the current collector is moving to the equilibrium position, the carbon brush is also moving within the U-shaped conductor space in a direction substantially perpendicular to the movement direction. Since the two or more guides are arranged at opposite sides of the carbon brush, the carbon brush will be in the center of the U-shaped conductor space when the current collector is in the equilibrium position. When the carbon brush is in the center of the U-shaped conductor space, the contact between the carbon brush and the current conductor is optimal. Thus, an advantage of the current collecting assembly is that the carbon brush will be and will be kept centered within the U-shaped conductor space.
Additionally, in practice the current conducting rail can move unexpectedly towards the current collector because of, for example, an irregular support surface to which the current conducting rail is secured. Such unexpected movement of the current conducting rail causes excess forces to be applied to the current collector. In a conventional current collecting assembly such excess forces are applied directly to the carbon brush, resulting in extra wear of the carbon brush. In the current collecting assembly according to the invention, such excess forces are applied to the two of more guides of the current collector and the distance between the carbon brush and the current conductor is maintained. An additional advantage of the invention, thus, can be that extra wear of the carbon brush due to unexpected movements of the current conducting rail towards the current collector can be reduced or in the ideal case can be prevented.
In an embodiment, the two or more guides are two or more guiding wheels arranged at the collector frame, wherein each of the two or more guiding wheels is rotatable around a rotation axis. In an embodiment thereof, each ofthe two or more guiding wheels comprises a wheel body having a circumferential contact surface for contacting the top side of one of the first leg and the second leg, wherein the circumferential contact surface of each of the 5 two or more guiding wheels is orientated at an angle with respect to the respective rotation axis, such that the circumferential contact surface of each of the guiding wheels is substantially parallel to the respective top side. An advantage of this embodiment is that guiding wheels running over the top side of the first and second legs, respectively, keep the wear between the two or more guides and the top sides of the first and second legs to a minimum, therewith reducing or in the ideal case preventing additional pollution of the current conducting rail. In an embodiment, the top side of each of the First leg and the second leg are orientated at an angle in a range between 30 and 60 degrees, preferably of about 45 degrees with respect to the height direction. The inventors have found that adjusting the top side of the first leg and the second leg to be at angle in the range of 30 and 60 degrees, preferably of about 45 degrees results in a good centering of the collecting brush of the current collector within the U-shaped conductor space while the current collector can move smoothly over and through the current conducting rail.
In an embodiment, a first imaginary plane extending parallel to the top side of the first leg intersects a second imaginary plane extending parallel to the top side of the second leg. In an embodiment thereof, each of the contact surfaces is ascending in a direction away from the substantially U-shaped space, or each of the contact surfaces is descending in a direction away from the substantially U-shaped space. This has to be understood as that the top side of the first leg has an opposite orientation with respect to the top side of the second leg, or vice versa. Because of the opposite orientation of the top sides of the first and second leg,
the contact surface of a guide at one side of the collecting brush also has an opposite orientation to the contact surface of another guide at another side, opposite to the one side, of the collecting brush, or vice versa. An advantage of this embodiment is that the collecting brush is centered within the U-shaped conductor space and, at the same time, a distance between the collecting brush and the current conductor can be controlled. In an embodiment, the current collector further comprises a collector frame, a collector arm rotatably attached to the collector frame, and a collector connector for connecting the current collector to a mobile installation, wherein the collector connector is rotatably connected to the collector arm and the two or more guides are arranged at the collector frame. An advantage of this embodiment is that the current collector can be secured to a mobile installation, such as a travelling bridge crane, while the current collector is enabled to follow the track formed by the current conducting rail.
In an embodiment, the collector arm is rotatable with respect to the collector frame about a first rotation axis substantially perpendicular to the movement direction and substantially perpendicular to the height direction of the current conducting rail, and about a first additional rotation axis substantially perpendicular to the movement direction and parallel to the height direction of the current conducting rail. Due to the collector arm being rotatable to the collector frame about the first rotation axis, a movement of the current conducting rail towards the collector arm can be absorbed by the collector arm rotating about the first rotation axis. Due to the collector arm being rotatable about the first additional axis, the current collector is able to absorb any fluctuations in the linearity of the current conducting rail in the movement direction. An advantage of this embodiment, therefore, is that fluctuations of the current conducting rail can be absorbed by the current collector.
In an embodiment, a first centering spring isprovided between the collector frame and the collector arm, wherein the first centering spring is configured for maintaining the collector frame and the collector arm in an initial position in which the collector frame and the collector arm are within the same plane substantially perpendicular to the movement direction.
In an embodiment thereof, the collector arm comprises a first elongated arm part and a second arm part orientated transversely to each other.
In a further embodiment, the collector frame comprises a first spring protrusion with a receiving opening, and the second arm part comprises a second protrusion with a receiving opening, wherein each of the ends of the first centering spring is received within the receiving opening of the first spring protrusion or the second spring protrusion, respectively.
In the initial position, the collecting brush is centered within the U- shaped conductor space and friction between the current collector and the current conducting rail is as low as possible.
The first centering spring is arranged, such that rotation of the collector arm about the first rotation axis causes the first centering spring to be compressed or stretched, and rotation of the collector arm about the first additional axis causes the first centering spring to be twisted.
The first centering spring prefers to be in a state in which it is not compressed, stretched or twisted.
When the first centering spring is compressed, stretched or twisted, it will rotate the collector frame and the collector arm with respect to each other until it is no longer compressed, stretched or twisted, therewith bringing the collector frame and the collector arm back in the initial position.
An advantage of this embodiment is that the collecting brush is kept centered within the U-shaped conductor rail and friction between the current collectorand the current conducting rail is kept as low as possible.
In an embodiment, the second arm part is provided with a first coupling part, preferably first partiallyball-shaped coupling part, for coupling the connector arm to the connector frame, wherein the collector frame comprises a receiving chamber for receiving the {first coupling part. A reliable and versatile coupling is realized between the collector frame and the collector arm according to this embodiment.
In an embodiment, the collector connector is rotatable with respect to the collector arm about a second rotation axis substantially perpendicular to the movement direction and substantially perpendicular to the height direction of the current conducting rail, and about a second additional rotation axis substantially perpendicular to the movement direction and parallel to the height direction of the current conducting rail. When the current collector is secured to the mobile installation, such as the traveling bridge crane, the traveling bridge crane itself also moves along a track which may fluctuate, thereby causing movement of the travelling bridge crane with respect to the current conducting rail. Because of the collector connector being rotatable with respect to the collector arm, the current collector is capable of absorbing any fluctuations in the track of the travelling crane, while maintaining the centering of the collecting brush and the distance between the current conductor and the collecting brush.
In an embodiment, when the collector arm comprises a first elongated arm part and a second arm part orientated transversely to each other, the first elongated arm part comprises a second coupling part, preferably a second ball-shaped coupling part, preferably wherein the second coupling part is integral with the collector arm, wherein the second coupling part is provided with a rotation shaft extending through the second coupling part and removable arranged therein, and wherein the collector connector has a coupling member with a receiving space, preferably a partially ball- shaped receiving space, for receiving the second couplingpart. In an embodiment thereof, the coupling member 1s substantially U-shaped in cross-section and has a bottom, a first wall extending from the bottom at a first side thereof, and a second wall extending from the bottom at a second side thereof, wherein each of the first wall and the second wall has a first wall portion, a second wall portion and a third wall portion, wherein the second wall portions and a partially ball-shaped recess in the bottom together define the partially ball-shaped receiving space for receiving the second ball-shaped coupling part, thereby forming a joint, preferably wherein each of the second wall portions is provided with a slit for receiving the rotation shaft. An advantage of this embodiment is that rotation of the collector connector with respect to the collector arm about two separate rotation axes is realized with a single joint formed by the receiving space and the second coupling part. Moreover, the single joint is substantially free of moving parts, therewith reducing the risk of failure. Additionally, rotation of the collector connector about the second additional axis is limited by means of the rotation shaft within the slit.
In an embodiment, the first wall portions and the thirds wall portions together define two receiving channels converging towards the partially ball-shaped receiving space, wherein the receiving channels are configured for receiving a part of the first elongated arm part of the collector arm. Because of the first elongated arm part being received partially within the two receiving channels, the first elongated arm part rotates within the two receiving channels during rotation of the collector connector about the second additional axis. Rotation about the second additional axis is limited because of the first elongated arm part abutting against the respective first and third wall portions.
In an embodiment, a second centering spring is provided between the collector connector and the collector arm, wherein the second centering spring is configured formaintaining the collector connector and the collector arm in an initial position in which the collector arm and the collector arm are within the same plane substantially perpendicular to the movement direction.
As explained above, an advantage of this embodiment is that the collecting brush is kept centered within the U-shaped conductor rail and friction between the current collectorand the current conducting rail is kept as low as possible.
In an embodiment, the collector {frame has a central frame portion, a first side frame portion arranged at a first side of the central frame portion, and a second side frame portion arranged at a second side, opposite to the first side, of the central frame portion, wherein a collecting brush is provided in each of the first and second side frame portions.
In an embodiment thereof, the first side frame portion and the second side frame portionare hingeably coupled to the central frame portion, preferably by means of a film hinge.
In practice, the current conducting rail comprises several corners in order to follow a track to be followed by the mobile installation, such as the travelling bridge crane.
When the current collector has to move through such a corner, the leading part of the current collector enters the corner before the middle and tail part of the current collector.
Because of the length of the collector, the two or more guides may exert a force onto the first and/or second leg of the current conducting rail resulting in extra friction between the two or more guides and the respective leg.
By providing the film hinge between the first side frame portion and the central frame portion, and between the second side frame portion and the central frame portion, for example, the leading part, which might be the first side frame portion, is capable of entering the corner while the central frame portion and the second side frame portion are still moving in a straight line.
This reduces or in the ideal case eliminates friction between the current collector and the current conducting rail in case ofcorners provided in the current conducting rail.
In a further embodiment, two or more guides are provided at each of the first side frame portion and the second side frame portion.
In an embodiment, the rail housing of the current conducting rail comprises multiple rail housing segments, wherein the multiple rail housing segments are mutually coupled by means of multiple rail couplers, and wherein the current conductor is a continuous current conductor 19 extending through and received within the multiple rail housing segments. In the conventional current collecting assemblies, multiple segments of current conductor are connected to each other for example by means of a screw connection. Such screw connections between current conductor segments form irregularities in the current conductor. When a carbon brush moves along such irregularity, the carbon brush, for example, scrapes along the irregularity thereby causing extra wear of the carbon brush. An advantage of this embodiment is that a continuous current conductor is provided, which is a current conductor having a smooth outer circumference over substantially the whole length thereof, therewith reducing the wear of the collecting brush.
In an embodiment, the continuous current conductor is a continuous conductor wire, preferably made of copper, more preferably of annealed copper, wherein the continuous conductor wire has a diameter in the range of 1 to 100 mm, preferably 5.7 mm. An advantage of this embodiment is that in case the continuous conductor wire is twisted within the rail housing, the outer circumference of the continuous conductor rail is still smooth. Additionally, a continuous conductor wire is easy to install, since there is no need to install the continuous conductor wire in a predetermined orientation.
In an embodiment, the current collecting assembly comprises two or more current conducting rails arranged side-by-side, and at least one current collector for eachof the two or more current conducting rails. An advantage of this embodiment is that a multipole current collecting assembly can be provided, wherein each of the two or more current conducting rails has its own current collector.
According to a second aspect, the invention provides a current conducting rail for use in a current collecting assembly according to the first aspect of the invention.
According to a third aspect, the invention provides a current collector for use in a current collecting assembly according to the first aspect of the invention.
According to a fourth aspect, the invention provides a method of installing a current collecting assembly according to the first aspect of the invention, wherein the rail housing of the current conducting rail comprises multiple rail housing segments, wherein the multiple rail housing segments are mutually coupled by means of multiple rail couplers, and wherein the current conductor is a continuous current conductor extending through and received within the multiple rail housing segments, the method comprising the steps of: — providing multiple rail housing segments, multiple rail couplers, and a continuous current conductor; = mounting the multiple rail housing segments to support surfaces in order to form a track to be followed by a mobile installation, such as a travelling bridge crane, thereby mutually coupling the multiple rail housing segments by means of the rail couplers; and - inserting the continuous current conductor into the mounted multiple rail housing segments. The method has at least the same advantages as mentioned above in relation to the current collecting assembly according to the first aspect of the invention.
In an embodiment, the step of inserting the continuous current conductor into the mounted multiple rail housing segments comprises the step of clicking the continuous current conductor into the mounted multiple rail housing segments.
The various aspects and features described and shown in the specification can be applied, individually, wherever possible. These individual aspects, in particular the aspects and features described in the attached dependent claims, can be made subject of divisional patent applications.
BRIEF DESCRIPTION OF THE DRAWINGS The invention will be elucidated on the basis of an exemplary embodiment shown in the attached drawings, in which: Figures 1A - 1B show an isometric overview and a front view, respectively, of a current collecting assembly having a current collector with a collector frame, a collector arm and a collector connector, and a current conducting rail according to an embodiment of the invention; Figures 2A — 2C show an exploded view of the current conducting rail of figure 1, a cross-sectional of the current conducting rail along line II-III in figure 1, and a rail coupler for coupling rail housing segments of the current conducting rail respectively; Figures 3A — 3F show an isometric view of the collector frame, a side view of the collector frame, a top view of the collector frame, a front view of the collector frame, a cross-sectional view of the collector frame along the longitudinal axis thereof, and a cross-sectional view of a carbon brush arranged within the collector frame, respectively;
Figures 4A — 4B show an isometric view of the collector arm, and a top view of the collector arm, respectively; and Figure 5 shows an isometric view of the collector connector.
DETAILED DESCRIPTION OF THE INVENTION An embodiment of a current collecting assembly 1 according to the invention is shown in figure 1A. The current collecting assembly 1 comprises a current collector 2 and a current conducting rail 3. The current conducting rail 3 comprises a rail housing 10 having a first rail housing segment 11 and a second rail housing segment 12. Although only the first and second rail housing segments 11, 12 are shown, in practice the current collecting assembly 1 comprises multiple rail housing segments in order to form the current conducting rail 3.
Each of the first and second rail housing segments 11, 12 is provided with a housing body 13. As shown in figure 2B, the housing body 13 has a rail bottom 14, a first rail leg 15 extending upwardly from the rail bottom 14 in a height direction E, at a first side thereof, and a second rail leg 16 extending upwardly from the rail bottom 14 in the height direction E, at a second side thereof. Each of the first and second rail leg 15, 16 has an inner side 17 which is facing the other one of the first and second rail leg 15, 16. The inner side 17 of each of the first and second rail leg 15, 16 has a first inner portion 18 and a second inner portion 19. The first inner portions 18 of the first and second rail leg 15, 16 together define a space 20 partial circular in cross- section and proximal to the rail bottom 14. The second inner portions 19 of the first and second leg rail 15, 16 together define a passageway 21 distal to the bottom 14,
wherein the second inner portions 19 are substantially parallel to each other. As indicated in figure 2B, the passageway 21 has a first width Wl and the partially circular space 20 has a first diameter Bl. The first width Wl is smaller than the first diameter DI.
Each of the first and second rail leg 15, 16 has an outer side 22 provided with a recess 23. The recess has an arch-shaped bottom 24, a first beveled side wall 25 and a second side wall 26. Further, each of the first rail leg and the second rail leg 15, 16 includes a first receiving channel 27 extending through the respective rail housing segment 11, 12 at the height of the partially circular space 20, and a second receiving channel 28 extending through the respective rail housing segment 11, 12 at the height of the passageway 21. The respective rail housing segment 11, 12 includes a central receiving channel 29 extending through the respective rail housing segment 11, 12 along and through the bottom 12 thereof. The central receiving channel 29 has a bottom wall 30 and an arch- shaped top wall 31. The bottom wall 30 is provided with a triangular protrusion 32 extending towards the top wall 31 of the central receiving channel 29.
As schematically shown in figure 2A, the first rail housing segment 11 and the second rail housing segment 12 are coupled to each other by means of a rail coupler 35. As shown in figure 2C, the rail coupler 35 comprises a coupler body 36 having a coupler bottom 37, a first coupler leg 38 extending upwardly from the coupler bottom 37 at a first side thereof, and a second coupler leg 39 extending upwardly from the coupler bottom 37 at a second side thereof. Each of the first and second coupler leg 38, 39 has an inner side 40 which is facing the other one of the first and second coupler leg 38, 39. The inner side 40 of each of the first and second coupler leg 38, 39 has a first inner portion 41 and a second inner portion 42. The first inner portions 41 of the first and second coupler leg 38, 39 together define a space 43 partial circular in cross-
section and proximal to the coupler bottom 37. The second inner portions 42 of the first and second coupler leg 38, 39 together define a passageway 44 distal to the coupler bottom 37, wherein the second inner portions 42 are substantially parallel to each other. In respect of dimensions of the coupler body 36 it is noted that they correspond to the dimensions of the rail housing segments 11, 12, such that a smooth transition from one of the rail housing segments 11, 12 to the rail coupler 35 or vice versa is realized.
As shown in figure 2C, the coupler body 36 has a first contact surface 45 for contacting one of the rail housing segments 11, 12, and a second contact surface 46, opposite to the first contact surface 45, for contacting the other one of the rail housing segments 11, 12. Each of the coupler legs 38, 39 is provided with a first coupling protrusion 47 for insertion, a second coupling protrusion 48 extending from the first and second contact surface 45, 46 for insertion into the corresponding respective first and second receiving channels 27, 29 of the respective rail housing segment 11, 12. Further, a central coupling protrusion 49 extends from the first and second contact surface 45, 46 of the coupler body 36. Each central coupling protrusion 49 comprises a protrusion body 50 having an engaging protrusion 51 at the distal end thereof. When coupled to one of the rail housing segments 11, 12, the engaging protrusion 51 extends towards the bottom wall of the central receiving channel 29. The side of the engaging protrusion 51 facing the bottom wall 30 of the 30 central receiving channel 29 is provided with a triangular recess 52 arranged for receiving the triangular protrusion
32.
The conductor rail 3 further comprises a continuous current conductor 53 extending through each of the rail housing segments 11, 12 and the coupler(s) 35 of the conductor rail 3. The continuous current conductor 53 has a conductor body 54 which is substantially circular incross-section having a conductor diameter substantially corresponding to the above mentioned first diameter D1. The conductor body 54 is made of annealed copper.
Additionally, the conductor rail 3 comprises a number of rail supports 55 for supporting the conductor rail 3 with respect to a surface at which the conductor rail 3 can be arranged.
Each of the rail supports 55 is provided with a first click arm 56 and a second click arm 57 in order to form a click connection between the respective rail support 55 and the respective rail housing segment 11, 12. In practice, the conductor rail 3 is arranged along a path to be followed by a mobile installation, such a non-shown travelling bridge crane.
In order to install the conductor rail 3 along the path to be followed, first the rail housing segments 11, 12 are installed and coupled to each other with couplers 35. When the installation of the rail housing segments 11, 12 is completed, the continuous current conductor 53 is arranged within the installed rail housing segments 11, 12. As is clear from figure 2B, the continuous current conductor 53 has a diameter which is (slightly) larger than the first width Wl of the passageway 21. Thus, the continuous current conductor 53 has to be forced through the passageway 21, thereby forcing the first and second rail legs 15, 16 to move away from each other.
As the rail housing segments 11, 12 are made of a plastic, the first and second rail legs 15, 16 are enabled to deform temporarily.
When the continuous current conductor 53 is received within the partially circular space 20, the rail legs 15, 16 move back to the position as shown in figure 2B, thereby locking the continuous current conductor 53 within the respective rail housing segment 10, 11. The continuous current conductor 53 is installed in the coupler(s}) 35 in the same manner.
As best shown in figure 2B, the top side 58 of each of the rail legs 15, 16 facing away from the rail bottom 14 of the respective rail housing segment 11, 12 is orientated at an angle with respect to the height direction
In particular, the top side 58 is orientated at an angle of about 45 degrees with respect to the height direction E.
As shown in figure 1, the current collector 2 comprises a collector frame 60 with a carbon brush 100, a collector arm 61 coupled to the collector frame 60, and a collector connector 62 coupled to the collector arm 61 for connecting the current collector 2 to a non-shown mobile installation, such as a travelling bridge crane.
The collector frame 60 is shown in more detail in figures 3A — 3F.
The collector frame 60 has a central frame portion 70 moveable along the current conducting rail 3 in a movement direction X, a first side frame portion 71 arranged at a first side of the central frame portion 70, and a second side frame portion 72 arranged at a second side, opposite to the first side, of the central frame portion 70. The first and second side frame portion 71, 72 are substantially identical to each other.
The central frame portion 70 has a central {frame body 73 with a receiving chamber 74 defined therein.
The receiving chamber 74 is open at the top side thereof in order to receive a part of the collector arm 61. As shown in figure 3C, the receiving chamber has a first side 75 and a second side 76 opposite to the first side 75 in a direction parallel to the movement direction.
The first side 75 extends substantially perpendicular to the movement direction Xx, and the second side 76 is at an angle with respect to the movement direction X.
Further, the receiving chamber 74 has a third side 77 and a fourth side 78, both extending substantially perpendicular to each of the first side 75 and the second side 76. Each of the third and fourth side 77, 78 is provided with a circular opening 79, wherein the circular opening 79 of the third side 77 is situated substantially directly opposite to the circular opening 79 of the fourth side 78. A first rotation axis Rl extends through the circular openings 79 of the third and fourth sides 78, 79. As shown in figure 3B, a first spring protrusion
80 1s provided at the top side of the central frame body 73, extending upwardly therefrom. The first spring protrusion 80 is provided with a receiving opening 81 for receiving a part of a spring.
Fach of the first and second side frame portions 71, 72 has a side frame body 82 which 1s connected to the central frame body 73 by means of a film hinge 83. By means of the film hinge 83, the first side frame portion 71 is able to hinge about a first hinge axis Hl, and the second frame portion 72 is able to hinge about a second hinge axis H2. The central frame body 73 and both the side frame bodies 82 are manufactured as an integral part, for example by means of additive manufacturing, such as injection moulding. The film hinges 83 are thin material bridges between the central frame portion 73 and the first or second frame portion 71, 71, wherein the material, for example, is an elastomeric material, such as nylon (PAG). Due to the film hinges 83, the first and second frame portions 71, 72 are able to rotate with respect to the central from body 73 while moving along the conductor rail
3.
As shown in figure 3C, a guiding sleeve 84 is formed at both sides of the side frame body 82, wherein a guiding space 85 is defined within the guiding sleeve 84.
Each guiding sleeve 84 has an upper opening 86 with a second diameter DZ, and a lower opening 87 with a third diameter D3. The second diameter D2 is smaller than the third diameter D3. A spring 88 having a spring diameter which is larger than the second diameter DZ is placed within each guiding sleeve 84. Because of the second diameter D2 being smaller than the spring diameter, the spring 88 abuts against the top wall of the guiding sleeve 84, and is enabled to extend through the lower opening 87 thereby applying a spring force to the carbon brush 100, as shown in figure 3E.
Each side frame body 82 is further provided with two parallel guiding channels 89 extending through therespective side frame body 82 in a direction substantially perpendicular to the movement direction X. The guiding channels 89 are configured for receiving a part of the carbon brush 100 and for guiding movement thereof. As shown in figure 3E, each guiding channel 89 has a first channel part 90 with a first channel width Cl, and a second channel part 91 above the first channel part 90 with a second channel width C2. The second channel width C2 is larger than the first channel width C1.
As shown in figures 3A and 3B, each side frame body 82 has two wheel connectors 92, wherein one of the two wheel connectors 92 is provided at a first side surface of the side frame body 82 and the other one of the two wheel connectors 92 is provided at a second side surface, opposite to the first side surface, of the side frame body
92. Each wheel connector 92 comprises a first connector protrusion 93 and a second connector protrusion 94, both extending parallel to each other from the respective side surface of the side frame body 92. Each of the first and second connector protrusions 93, 94 comprises a retaining lip 95 at the distal end thereof, which retaining lip 95 extends radially outwards with respect to the longitudinal axis of the respective wheel connector 92. Each of the first and second connector protrusions 93, 94 is produced from elastomeric material, such that the first and second connector protrusions 33, 94 are enabled to be moved towards each other by pushing the first and second protrusions 93, 94 towards each other from an initial position and to move back to the initial position when released.
As shown in figures 3A — 3E, each side frame body 82 has two guiding wheels 96, wherein a first one of the guiding wheels 96 is connected the first side surface of the side frame body 92 by means of the first one of the two wheel connectors 92, and the other one of the two guiding wheels 96 is connected to the second side surface of the side frame body 92 by the second of the two wheelconnectors 92. Each of the guiding wheels 96 has a wheel body 97 having a central recess 98 provided in the center of the respective guiding wheel 96. In the middle of the central recess 98, a non-shown passage is provided through which the respective wheel connector 92 can pass.
In order to connect the respective guiding wheel 96 to the respective side frame body 82, the first and second connector protrusions 93, 94 of the wheel connector 92 are pushed towards each other, such that they can pass through the non-shown passage provided within the guiding wheel 96. When the connector protrusions 93, 94, in particular the retaining lips 95 thereof, have passed through the non- shown passage, the connector protrusions 93, 94 are released, such that they can move back to the initial position as shown in figure 3A.
The retaining lips 95 prevent the guiding wheel{s) 96 from being removed from the collector frame 60 unintentionally.
Each of the guiding wheels 96 is rotable around a second rotation axis R2 which is substantially parallel to the longitudinal axis of the respective wheel connector 92 to which the respectiveguiding wheel 96 is connected.
The wheel body 97 of each of the guiding wheels 96 has a circumferential contact surface 99 which is orientated at an angle with respect to the respective second rotation axis RZ of the guiding wheel 96. In particular, the circumferential contact surface 99 is orientated at an angle of 45 degrees with respect to the respective second rotation axis RZ of the guiding wheel 06. As shown in figure 1B, the circumferential contact surface 99 of each guiding wheel 97 is in contact with the top side 58 of the first and second legs 15, 16 of the conductor rail 3, when the current collector 2 moves through the current conducting rail 3. As the tilt of the circumferential contact surface 99 of the guiding wheels 96 and the tilt of the top sides 58 of the first and second legs 15, 16 are substantially the same, the current collector 2 is centered within the current conducting rail
3 when arranged therein. When the current collector 2 is placed at the current conducting rail 3, the current collector 2 will move into an equilibrium position, in which the contact area between the circumferential contact surface 99 of the guiding wheel 96 and the top side 58 of one of the first and second legs 15, 16 is substantially the same on both legs 15, 16 of the current conducting rail
3. Furthermore, in case the current conducting rail 3 makes an unexpected movement, for example, towards the current collector 2, excess forces will be applied to the current collector 2. Due to the contact between the circumferential contact surface 99 of the guiding wheels 96 and the top side 58 of the first and second legs 15, 16 of the current conducting rail 3, such excess forces will be applied to the guiding wheels 96, thereby preventing the carbon brush 100 from getting damaged.
The current collector 2 further comprises a carbon brush 100. The carbon brush 100 has a mounting member 101 for mounting the carbon brush 100 to the collector frame 60. The mounting member 101 has a mounting body 102 having a first side 103, facing the collector frame 60, and a second side 104, directed towards the current conducting rail 3 when arranged therein, opposite to the first side 103. Guiding rods 105 are arranged at the first side 103 of the mounting member 101, which guiding rods 105 are adapted to be received within the guiding channels 89 of the side frame body 82. Each of the guiding rods 105 has a limiter 106 at the distal end thereof extending radially outwardly from the respective guiding rod 105 with respect to the longitudinal axis thereof, which limiter 106 is intended to be received within the second channel part 91 of the respective guiding channel
89. Since the second channel width C2 of the second channel part 91 is larger than the first channel width Cl of the first channel part 90, the limiter 106 is enabled to only move within the second channel part 91, as movement of the limiter 106 in a direction substantially perpendicular tothe movement direction X within the first second channel part 90 is prevented.
The limiter 105 thus determines the movement range of the carbon brush 100. At the second side 104 of the mounting body 102, a receiving recess 107 is provided for receiving a part of a brush body 110 of the carbon brush 100. The receiving recess 107 comprises a coupling shaft 109 within the receiving recess 107. The mounting body 102 further comprises two through holes 108 debouching into the receiving recess 107, through which non-shown electrical wires can pass to be attached, for example welded, to the brush body 110. The brush body 110 is provided with a brush coupler 111 arranged for being coupled rotatably to the coupling shaft 109 of the mounting body 102. The brush body 110, therefore, is rotatable about a rotation axis substantially parallel to the second rotation axis RZ of the guiding wheels 96. As shown in figure 3D, the brush body 110 has a curved contact surface 112 for contacting the continuous current conductor 53, wherein the radius of curvature of the curved contact surface 112 substantially corresponds to the radius of curvature of the continuous current conductor 53. An isometric view of the collector arm 61 is shown in figure 4A.
The collector arm 61 comprises a first elongated arm part 120 having a first end 121 and a second end 122 opposite to the first end 121 thereof, and a second arm part 123 having a first end 124 and a second end 125 opposite to the first end 124 thereof.
The first elongated arm part 120 and the second arm part 123 are connected to each other at the first ends 121, 124 thereof, wherein the first elongated arm part 120 and the second arm part 123 are orientated transversely to each other.
The second arm part 123 has a first side surface 126 and a second side surface 127 opposite to the first side surface 126. As shown in figure 4A, the first side surface 126 includes a first surface portion 128 and a second surface portion 129. The first surface portion 128 and the second surfaceportion 129 are orientated at an angle with respect to each other. The second side surface 127 is also provided with a first surface portion 128 and a second surface portion 129, such that the second arm part 123 is hexagonal in cross- section. The second arm part 123 further comprises a first abutment surface 130 and a second abutment surface 131 opposite to the first abutment surface 130. At the second end 125, the second arm part 123 is provided with a first partially ball-shaped coupling part 132.
As shown in figure 1A, the first partially ball- shaped coupling part 132 is configured to be received within the receiving chamber 74 of the central frame body 73 of the collector frame 60. When received therein, the collector arm 61 is rotatable around the first rotation axis Rl and an additional rotation axis Al perpendicular to the first rotation axis Rl and to the movement direction X. Rotation of the collector arm 61 around the first rotation axis R1 is limited by the first abutment surface 130 abutting against the second side 76 of the receiving chamber 74, or the second abutment surface 131 abutting against the first side 75 of the receiving chamber 74. Rotation of the arm around the additional rotation axis Al is limited in one direction by the first surface portion 128 of the first side surface 126 abutting against the fourth side 78 of the receiving chamber 74 and the second surface portion 120 of the second side surface 126 abutting against the third side 77 of the receiving chamber 74, or vice versa.
The first elongated arm part 121 also includes a first side surface 133 and a second side surface 134 opposite to the first side surface 133. The first side surface 133 is provided with a second spring protrusion 136 having a receiving opening 137. As shown in figure 1A, a first centering spring 138 can be attached to the second spring protrusion 136 and the first spring protrusion 80 of the collector frame 60 by receiving the end of the first centering spring 138 within the receiving openings 81, 137.
The first centering spring 138 is configured for aligning the collector arm 61 with respect to the collector frame 60, such that they are substantially within the same plane during use of the current collector 2. As shown in figure 4B, a part of the second side surface 134 has a central surface portion 139, a first sloping surface portion 140 and a second sloping surface portion 141. The first and second sloping surface portions 140, 141 are arranged at opposite sides of the central surface portion 139, and are orientated at an angle with respect to the central surface portion 139.
At the second end 122 of the first elongated arm part 120, a fork-shaped member 142 is provided having a first spring coupling rod 143 extending between the legs of the fork-shaped member 142. A second ball-shaped coupling part 144 is provided at the first elongated arm part 120 between the part of the second side surface 134 with the central surface portion 139, the first sloping surface portion 140 and the second sloping surface portion 141, and the fork-shaped member 142. The second ball-shaped coupling part 144 is integral with the collector arm 61. The second ball-shaped coupling part 144 is provided with a rotation shaft 145 which is extending through the second ball-shaped coupling part 144 and is removable arranged therein.
As shown in figure 5, the collector connector 62 comprises a collector connector body 146 with a first body part 147 and a second body part 148. The first body part 147 and the second body part 148 are orientated substantially perpendicular to each other. The second body part 148 is provided with a mounting opening 149 for receiving, for example, (a part of) a non-shown bolt for mounting the current collector 2 to a non-shown mobile installation. The first body part 147 has a first side wall 150 and a second side wall 151 substantially parallel to each other. A second spring coupling rod 152 extends between the first side wall 150 and the second side wall
151.
The first body part 147 is provided with a coupling member 153 at the end facing away from the second body part 148. The coupling member 153 is substantially U- shaped in cross-section and has a bottom 154, a first wall 155 extending from the bottom 154 at a first side thereof, and a second wall 156 extending from the bottom 154 at a second side thereof. Each of the first wall 155 and the second wall 156 has a first wall portion 157, a second wall portion 158 and a third wall portion 159%, wherein the second wall portions 158 of the first wall 155 and the second wall 156 are located between the first wall portions 157 and the third wall portions 159 of the first wall 155 and the second wall 156. As shown in figure 5, the second wall portions 158 and a partially ball-shaped recess 164 in the bottom 154 together define a partially ball-shaped receiving space 161 for receiving the second ball-shaped coupling part 144, thereby forming a joint. The first wall portions 157 and the thirds wall portions 159 together define a receiving channel 162 converging towards the partially ball-shaped receiving space 161. The receiving channels 162 are configured for receiving a part of the first elongated arm part 121 of the collector arm 61. Each of the second wall portions 158 is provided with a slit 163 for receiving the rotation shaft 145.
In the assembled state as shown in figure 1A, the second ball-shaped coupling part 144 is received within the partially ball-shaped receiving space 162 defined by the second wall portions 158 of the first wall 155 and the second wall 156 and the partially ball-shaped recess 164.
The rotation shaft 145 extends through the second ball- shaped coupling part 144 and into the slit 163 of each second wall portion 158. Due to the ball shape of the second ball-shaped coupling part 144 and the partially ball-shaped receiving space 161, the collector connector 62 can rotate with respect to the collector arm 61 about the rotation shaft 145. Rotation of the collector connector 62 about the rotation shaft is limited by the bottom 154between the first side wall portions 157 or between the third side wall portions 159 abutting against the second side surface 134 of the first elongated arm part 120 of the collector arm 61.
Because of the rotation shaft 145 being received within the slit 163 in each of the second wall portions 158, the collector connector 62 is also enabled to rotate with respect to the collector arm 61 around a second additional rotation axis A2 substantially perpendicular to the movement direction x and to the rotation shaft 145. Rotation of the collector connector 62 around the second additional rotation axis A2 is limited by the third wall portion 159 of the first side wall 155 abutting against the second sloping surface portion 141 of the first elongated arm part 120, or by the third wall portion 159 of the second side wall 156 abutting against the first sloping surface portion 140 of the first elongated arm part 120.
As shown in figure 1A, a second centering spring 153 is provided between the first spring coupling rod 145 and the second spring coupling rod 152. The second centering spring 153 is configured for aligning the collector arm 61 and the collector connector 62, such that they are within the same plane, substantially perpendicular to the movement direct X, when no forces are applied to the current collector 2.
It is noted that although only one current conducting rail 3 and one current collector 2 is shown in the figures, the current collecting assembly 1 can be provided with two or more current conducting rails 3 arranged side-by-by and one or more current collectors 2 for each of the two or more current conducting rails 3 in order to realise a multipole current collecting assembly 1.
It is to be understood that the above description is included to illustrate the operation of the preferred embodiments and is not meant to limit the scope of the invention. From the above discussion, many variations will be apparent to one skilled in the art that would yet beencompassed by the scope of the present invention.
In light of the above, the following current collecting assemblies are also within the scope of the invention or can be made subject of divisional patent applications.
Current collecting assembly for mobile installations, such as travelling bridge cranes, comprising a current collector and a current conducting rail, the current conducting rail comprising a rail housing having a bottom, a first leg extending from the bottom in a height direction substantially perpendicular to the bottom, and a second leg extending from the bottom in the height direction, wherein the bottom, first leg and second leg define a substantially U-shaped conductor space, the current conducting rail further comprising a current conductor received within the substantially U- shaped conductor space, wherein the current collector is configured for moving along the current conducting rail in a movement direction the current collector comprising a collector frame having a first frame portion and a second frame portion, wherein a collecting brush, such as a carbon brush, is provided in at least one of the first and second frame portions, wherein the collecting brush is configured for being inserted into the substantially U-shaped conductor space and for contacting the current conductor to collect electrical energy wherein the first frame portion and the second frame portion are hingeably coupled to each other, preferably by means of a film hinge.
Current collecting assembly for mobile installations, such as travelling bridge cranes, comprising a current collector and a current conducting rail, the current conducting rail comprising a railhousing having a bottom, a first leg extending from the bottom in a height direction substantially perpendicular to the bottom, and a second leg extending from the bottom in the height direction, wherein the bottom, first leg and second leg define a substantially U-shaped conductor space, the current conducting rail further comprising a current conductor received within the substantially U- shaped conductor space, the current collector being configured for moving along the current conducting rail in a movement direction and comprises a collecting brush, such as a carbon brush, configured for being inserted into the substantially U- shaped conductor space and for contacting the current conductor to collect electrical energy, the current collector further comprising a collector frame, a collector arm rotatably attached to the collector frame, and a collector connector, rotatably attached to the collector arm, for connecting the current collector to a mobile installation, wherein the collector connector is rotatable with respect to the collector arm about a second rotation axis substantially perpendicular to the movement direction and substantially perpendicular to the height direction of the current conducting rail, and about a second additional rotation axis substantially perpendicular to the movement direction and parallel to the height direction of the current conducting rail.
Preferably, the connector arm comprises a second coupling part, preferably a second ball-shaped coupling part, preferably wherein the second coupling part is integral with the collector arm, wherein the second coupling part is provided with a rotation shaft extending through the second coupling part and removable arranged therein, and the collector connector has a coupling member with a receiving space, preferably a partially ball-shaped receiving space, for receiving the second coupling part.
Preferably, the coupling member is substantially U-shaped in cross-section and has a bottom, a first wallextending from the bottom at a first side thereof, and a second wall extending from the bottom at a second side thereof, wherein each of the first wall and the second wall has a first wall portion, a second wall portion and a third wall portion, wherein the second wall portions and a partially ball-shaped recess in the bottom together define the partially ball-shaped receiving space for receiving the second ball-shaped coupling part, thereby forming a joint, preferably wherein each of the second wall portions is provided with a slit for receiving the rotation shaft.
Claims (27)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2022586A NL2022586B1 (en) | 2019-02-15 | 2019-02-15 | Current collecting assembly, current collector and current conducting rail for use therein |
| DE202020100802.1U DE202020100802U1 (en) | 2019-02-15 | 2020-02-14 | Current collector assembly, current collector and current conducting rail for use therein |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2022586A NL2022586B1 (en) | 2019-02-15 | 2019-02-15 | Current collecting assembly, current collector and current conducting rail for use therein |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL2022586B1 true NL2022586B1 (en) | 2020-08-28 |
Family
ID=66641413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2022586A NL2022586B1 (en) | 2019-02-15 | 2019-02-15 | Current collecting assembly, current collector and current conducting rail for use therein |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE202020100802U1 (en) |
| NL (1) | NL2022586B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT525298A1 (en) * | 2021-07-19 | 2023-02-15 | Siemens Mobility Austria Gmbh | Power supply equipment, vehicle and vehicle infrastructure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1805117A1 (en) * | 1968-01-26 | 1969-08-14 | Christian Falque | Pantograph |
| US4791871A (en) * | 1986-06-20 | 1988-12-20 | Mowll Jack U | Dual-mode transportation system |
| KR20050080017A (en) * | 2005-07-01 | 2005-08-11 | 옥은호 | A road with underground electronic power supply rail and electric vehicle equipped with auto control pantograph |
| EP2610099A1 (en) * | 2011-12-30 | 2013-07-03 | Siemens Aktiengesellschaft | Transport device for light conveyed goods, in particular vehicle components |
| EP3067233A1 (en) * | 2013-11-06 | 2016-09-14 | Honda Motor Company Limited | Contact charging method and contact charging system for electric vehicle |
-
2019
- 2019-02-15 NL NL2022586A patent/NL2022586B1/en active
-
2020
- 2020-02-14 DE DE202020100802.1U patent/DE202020100802U1/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1805117A1 (en) * | 1968-01-26 | 1969-08-14 | Christian Falque | Pantograph |
| US4791871A (en) * | 1986-06-20 | 1988-12-20 | Mowll Jack U | Dual-mode transportation system |
| KR20050080017A (en) * | 2005-07-01 | 2005-08-11 | 옥은호 | A road with underground electronic power supply rail and electric vehicle equipped with auto control pantograph |
| EP2610099A1 (en) * | 2011-12-30 | 2013-07-03 | Siemens Aktiengesellschaft | Transport device for light conveyed goods, in particular vehicle components |
| EP3067233A1 (en) * | 2013-11-06 | 2016-09-14 | Honda Motor Company Limited | Contact charging method and contact charging system for electric vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| DE202020100802U1 (en) | 2020-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1160213C (en) | Wiper blade for the glass surfaces of a motor vehicle | |
| NL2022586B1 (en) | Current collecting assembly, current collector and current conducting rail for use therein | |
| EP3083322B1 (en) | Current collector and conductor line system | |
| KR20010030688A (en) | Device for connecting a wiper blade for windshields in motor vehicles to a wiper arm | |
| US8727085B2 (en) | Segmented collector shoe assembly | |
| CN1288476C (en) | Glasses with screwless hinges | |
| CN112128242B (en) | All-round dirt-proof slider | |
| CN212553868U (en) | A walk line wheel structure and inspection robot for increasing area of contact | |
| DE19964581B4 (en) | pantograph | |
| US5161667A (en) | Electrical conductor rail and method of making | |
| CN112371667A (en) | Traveling system | |
| US6206156B1 (en) | Section insulator for conductor rails | |
| CN115333003B (en) | Traction device for laying power transmission line cable | |
| CN114552516B (en) | Intelligent bus connecting device and intelligent bus system | |
| CN211639895U (en) | Robot walking track | |
| CN211918861U (en) | Chassis and mobile robot | |
| KR102556658B1 (en) | Current collectors, conductor lines and conductor line systems | |
| CN110842891A (en) | Patrol and examine track and patrol and examine device | |
| CN219649885U (en) | Rail robot drive guiding device | |
| CN214578382U (en) | Sliding bearing assembly | |
| CN217228968U (en) | Belt conveyor with adjustable direction | |
| CN220882382U (en) | Inspection guide rail for electric robot | |
| CN219059745U (en) | Bridge expansion joint connection structure | |
| CN219535001U (en) | Radio frequency cable assembly convenient to connect | |
| CN214698807U (en) | Linear motion module with dust cover |