CN111746356B

CN111746356B - Charging device and charging system for railway vehicle

Info

Publication number: CN111746356B
Application number: CN201910242335.7A
Authority: CN
Inventors: 陈冲; 袁清辉; 尹双; 蒋悦斌
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2022-04-15
Anticipated expiration: 2039-03-28
Also published as: CN111746356A

Abstract

The invention discloses a charging device and a charging system of a rail vehicle, wherein the charging device comprises: lifting platform, charging rail part and switching device. Lifting platform includes the driving piece and places the board, the board removal is placed in the driving piece drive, the rail part that charges is including the rail that charges, switching device includes fixed part, rotary part and switch door, fixed part fixes on the supporting component, the switch door rotationally establishes on the supporting component, rotary part and fixed part sliding fit, rotary part links to each other with the switch door and prescribes a limit to the rotation orbit of switch door, the rail that charges when ascending charges is rotated to dodging the position with the drive switch door with the contact of switch door, when the rail that charges descends, under the action of gravity the lower door of closing is rotated to the closed position, dodge the motion route of charging the rail at the position switch door of dodging, be located the top of charging the rail at the closed position switch door. According to the charging device, the fixed component and the rotating component which are in sliding fit are arranged, so that the operation of opening and closing the door can be smoother.

Description

Charging device and charging system for railway vehicle

Technical Field

The invention relates to the technical field of rail transit, in particular to a charging device and a charging system of a rail vehicle.

Background

In the related art, a charging device of a rail vehicle includes a charging rail and an opening and closing device, and the charging rail may be received in the opening and closing device. When the charging device charges the rail vehicle, the opening and closing mechanism of the opening and closing device can open the opening and closing door to avoid the charging rail, but the structural design of the opening and closing mechanism is complex, so that the assembly is inconvenient, the operation of the opening and closing mechanism is not smooth, the phenomenon that the opening and closing door is not in place is easy to occur, and the protection effect of the opening and closing device on the charging rail is influenced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a charging device for a rail vehicle, which has the advantages of smooth operation and good sealing effect.

The invention also provides a charging system with the charging device of the railway vehicle.

According to the embodiment of the invention, the charging device of the rail vehicle comprises: the lifting platform comprises a driving piece and a placing plate, and the driving piece is connected with the placing plate to drive the placing plate to move up and down; a charging rail part including a charging rail placed on the placing plate; switching device, switching device includes fixed part, rotary part and switch door, fixed part fixes on the support component, the switch door rotationally establishes on the support component, rotary part with fixed part sliding fit, rotary part with the switch door links to each other in order to inject the rotation orbit of switch door, when charging the rail and rising the rail part that charges with the contact of switch door is in order to drive the switch door rotates to dodging the position, when charging the rail and descending, under the action of gravity the switch door rotates to the closed position dodge the position the switch door dodges the motion route of charging the rail the closed position the switch door is located the top of charging the rail.

According to the charging device for the railway vehicle, the fixed component and the rotating component are arranged, and the rotating component is in sliding fit with the fixed component to limit the rotating track of the switch door, so that the switch door can be guided, the switch door can be smoothly rotated to the avoiding position and the closing position, and the operating smoothness of the switch device can be improved.

According to some embodiments of the present invention, the fixed member and the rotating member are each formed in a circular arc shape, a sliding groove is provided in the fixed member, and a part of the rotating member is provided in the sliding groove and slidably engaged with the sliding groove.

In some embodiments of the present invention, the fixing component includes a fixing plate and two first limit plates, the two first limit plates are spaced apart from each other on opposite sidewalls of the fixing plate, and the fixing plate and the two first limit plates cooperate to define the sliding groove.

In some embodiments of the present invention, the first limiting plate is provided with a first guide groove extending along a rotation trajectory of the rotating member, and the opening and closing device further includes a first guide post fixed to the rotating member to rotate synchronously with the rotating member, the first guide post extending into the first guide groove to be slidably fitted into the first guide groove.

In some embodiments of the present invention, the rotating component includes two second limiting plates arranged at intervals, two of the second limiting plates correspond to two of the first limiting plates one to one, and the second limiting plates are in sliding fit with inner peripheral walls of the corresponding first limiting plates.

In some embodiments of the present invention, the second limiting plate is provided with a second guide groove extending along a rotation trajectory of the rotating member, and the opening and closing device further includes a second guide post fixed to the fixed member and extending into the second guide groove to be slidably fitted into the second guide groove.

In some embodiments of the invention, the stationary component and the rotating component are concentrically arranged.

In some embodiments of the invention, the angle of rotation of the rotating component relative to its centre of rotation is less than 90 °.

According to some embodiments of the invention, the lift platform further comprises: a support assembly telescopically disposed below the placing plate to support the placing plate.

In some embodiments of the invention, the lift platform further comprises: the opening and closing auxiliary piece is arranged on the placing plate and moves along with the placing plate synchronously, and when the placing plate ascends, the opening and closing auxiliary piece can be in contact with the rotating component to drive the rotating component to rotate until the opening and closing door is separated from the charging rail component.

In some embodiments of the present invention, the number of the switching doors is two, each of the switching doors is connected to the corresponding rotating component, and the opening and closing auxiliary member is located between the two rotating components and drives the two rotating components to rotate synchronously.

In some embodiments of the present invention, both ends of the charging rail in a length direction are provided with the opening and closing assistance pieces.

In some embodiments of the present invention, a plurality of first engaging teeth are disposed on the rotating member, a plurality of second engaging teeth are disposed on the opening/closing auxiliary member, and the plurality of first engaging teeth and the plurality of second engaging teeth are engaged with each other to drive the rotating member to rotate.

According to some embodiments of the present invention, a first magnetic member is disposed on the switch door, a second magnetic member is disposed on the supporting member, and the first magnetic member and the second magnetic member are magnetically attracted and matched to drive the switch door to rotate to the closed position.

According to some embodiments of the invention, the supporting member is a box body having an extending opening, the opening and closing door is rotatably provided on the box body to open or close the extending opening, the driving member is placed in the box body, and the charging rail extends out of or is received in the box body through the extending opening.

In some embodiments of the invention, the box comprises an intermediate support and a cladding, the cladding being enclosed on the outside of the intermediate support, the intermediate support being formed as a hollow piece.

In some embodiments of the invention, the intermediate support frame is a metal pipe or a metal profile.

A charging system according to an embodiment of the present invention includes: the charging device according to the above embodiment of the present invention; a collector shoe in contact with the charging rail to form an electrical connection.

According to the charging system provided by the embodiment of the invention, by arranging the charging device, the operation of the charging system can be smoother, and the use safety of the charging system can be improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a charging device according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion circled by A in FIG. 1;

FIG. 3 is a schematic view of a mating structure of a stationary member and a rotating member according to an embodiment of the present invention;

FIG. 4 is an exploded view of a stationary member and a rotating member according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a first state of an opening and closing door during opening according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a second state of the switch door during opening according to the embodiment of the invention;

FIG. 7 is a schematic diagram of a third state of the switch door during opening according to the embodiment of the invention;

FIG. 8 is a schematic diagram of the operation of the opening and closing door according to the embodiment of the present invention;

fig. 9 is a schematic view showing a fitting state of the first magnetic member and the second magnetic member according to the embodiment of the present invention;

FIG. 10 is a schematic view of the structure of the support assembly and the placing plate according to the embodiment of the present invention;

FIG. 11 is a sectional view showing a partial structure of a case according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a charging system according to an embodiment of the present invention in a first state;

fig. 13 is a schematic structural diagram of the charging system in the second state according to the embodiment of the present invention.

Reference numerals:

the charging device (100) is provided with a charging unit,

the lifting platform 1 is provided with a lifting platform,

a driving member 11, a placing plate 12, a supporting member 13, a connecting arm set 13a, a first connecting arm 131, a first slider 131a, a second connecting arm 132, a second slider 132a, a rotating shaft 133, a first pivoting seat 134, a second pivoting seat 135, a first sliding seat 136, a first sliding groove 136a, a second sliding seat 137, a second sliding groove 137a, an opening/closing auxiliary member 14,

the charging rail part 2, the charging rail 21, the insulating base 22,

an opening and closing means 3, a first extended locus 3a, a second extended locus 3b, a tangent point 3c,

the fixing member 31, the sliding groove 31a, the fixing plate 311, the first stopper plate 312, the first guide groove 312a, the second fitting hole 312b,

the rotating member 32, the second stopper plate 321, the second guide groove 321a, the first fitting hole 321b, the coupling plate 322,

a support member 33, a case 33a, an extension 331, an intermediate support 332, a packing 333,

a switch door 34, a first guide post 35, a second guide post 36, a first magnetic member 37, a second magnetic member 38,

the charging system (200) is provided with a charging system,

a collector shoe 201, a telescopic arm assembly 202, a first telescopic arm 202a, a second telescopic arm 202b,

the track beam 300, the escape space 300a,

a vehicle body 400.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

A charging device 100 for a rail vehicle according to an embodiment of the present invention, which charging device 100 can charge a rail vehicle, is described below with reference to the accompanying drawings.

As shown in fig. 1, a charging device 100 for a rail vehicle according to an embodiment of the present invention includes: lifting platform 1, charging rail component 2 and switching device 3.

As shown in fig. 10, the elevating platform 1 may include a driving member 11 and a placing plate 12, and the driving member 11 may be connected to the placing plate 12 to drive the placing plate 12 to move up and down. The charging rail part 2 may include a charging rail 21, and the charging rail part 2 may be placed on the placing plate 12. Specifically, when the charging device 100 is operated, the driving member 11 may drive the placing plate 12 to move up and down, and the placing plate 12 may drive the charging rail 21 to move synchronously therewith, so that the charging rail 21 may be driven to contact or separate from the collector shoe 201 on the body 400 of the railway vehicle.

Alternatively, the driving member 11 may be a linear motor, and the driving member 11 may also be a hydraulic cylinder, which may be set according to actual use requirements.

As shown in fig. 1, the opening and closing device 3 may include a fixed member 31, a rotating member 32, and an opening and closing door 34, the fixed member 31 may be fixed to a supporting member 33, the opening and closing door 34 may be rotatably provided on the supporting member 33, the rotating member 32 may be slidably engaged with the fixed member 31, and the rotating member 32 is coupled to the opening and closing door 34 to define a rotation track of the opening and closing door 34. When the charging rail 21 ascends, the charging rail member 2 may contact the switch door 34 to drive the switch door 34 to rotate to the escape position. As charging rail 21 descends, door 34 may rotate to a closed position under the force of gravity. The switch door 34 may be retracted from the path of movement of the charging rail 21 when the switch door 34 is in the retracted position, and the switch door 34 may be positioned above the charging rail 21 when the switch door 34 is in the closed position.

Specifically, one end of the rotating member 32 may be connected to the opening/closing door 34, and the other end of the rotating member 32 may be slidably fitted to the fixed member 31. When the charging device 100 is in operation, the driving member 11 may drive the placing plate 12 and the charging rail 21 to move upward synchronously, and the charging rail 21 may contact the switch door 34 during the movement. As the charging rail 21 continues to rise, the charging rail 21 may drive the switch door 34 to rotate in the first direction relative to the support member 33 to rotate to the retracted position. When the switch door 34 rotates relative to the support member 33, the rotating member 32 can be driven to slide relative to the fixed member 31, and when the rotating member 32 slides relative to the fixed member 31, a rotating track of the switch door 34 can be defined.

When the charging of the charging device 100 is completed, the driving member 11 may drive the placing plate 12 and the charging rail 21 to move downward. As the charging rail 21 moves down, the switching door 34 and the rotating member 32 rotate in a second direction opposite to the first direction under its own weight to rotate the switching door 34 to the closed position. Wherein, when switch door 34 is in the closed position, switch door 34 can be located the top of charging rail 21, and switch door 34 can play the effect of protection to charging rail 21, can prevent that foreign matters such as dust and sand, leaf from dropping on charging rail 21 and influencing charging device 100's normal work.

Alternatively, the first direction in the above description may be a clockwise direction, and the second direction in the above description may be a counterclockwise direction.

It can be understood that, because the rotating component 32 and the fixed component 31 are in sliding fit, a rotating track of the switch door 34 can be defined, and the rotating component 32 and the fixed component 31 are in sliding fit, so that the switch door 34 can be guided, the switch door 34 can be opened and closed more smoothly, the switch door 34 can be rotated to the avoiding position and the closing position smoothly, and the protection effect of the opening and closing device 3 on the charging rail 21 can be improved.

According to the charging device 100 for the railway vehicle, provided by the fixing part 31 and the rotating part 32, the rotating part 32 is in sliding fit with the fixing part 31 to define the rotating track of the opening and closing door 34, so that the opening and closing door 34 can be guided, the opening and closing door 34 can be smoothly rotated to the avoiding position and the closing position, and the operating smoothness of the opening and closing device 3 can be improved.

As shown in fig. 3 to 4, according to some embodiments of the present invention, each of the fixed member 31 and the rotating member 32 may be formed in a circular arc shape, a sliding groove 31a may be provided in the fixed member 31, and a portion of the rotating member 32 may be provided in the sliding groove 31a and slidably engaged with the sliding groove 31a, whereby the structural design and assembly manner of the fixed member 31 and the rotating member 32 may be made simpler. Moreover, the arc-shaped structure can make the sliding fit between the fixed component 31 and the rotating component 32 smoother, and further can make the rotation of the opening and closing door 34 smoother. Alternatively, both the fixed member 31 and the rotating member 32 may be formed in a semicircular shape.

Alternatively, the rotation angle of the rotating member 32 with respect to the rotation center thereof may be smaller than 90 °, so that when the switch door 34 is switched from the avoidance position to the closed position, the rotating member 32 may rotate synchronously with the switch door 34 by its own weight, thereby reducing the rotation resistance of the switch door 34 and enabling the operation of the switch door 34 to be smoother.

As shown in fig. 4, in some embodiments of the present invention, the fixing member 31 may include a fixing plate 311 and two first limiting plates 312, the two first limiting plates 312 may be spaced apart from each other on opposite sidewalls of the fixing plate 311, and the fixing plate 311 and the two first limiting plates 312 cooperate to define the sliding groove 31a, so that the design of the sliding groove 31a may be simpler, and the rotating member 32 may be conveniently engaged with the fixing member 31.

For example, the fixing plate 311 and the two first limiting plates 312 of the fixing member 31 may be formed in a circular arc shape, wherein the two first limiting plates 312 extend downward relative to the side wall of the fixing plate 311, and the fixing plate 311 and the two first limiting plates 312 may define the slide groove 31a disposed in an open manner. When the rotating member 32 is engaged with the fixed member 31, the rotating member 32 may be inserted into the sliding groove 31a in a downward and upward manner. When the rotating member 32 rotates in synchronization with the opening and closing of the door 34, the rotating member 32 reciprocates in the sliding groove 31a, and the shape of the sliding groove 31a may define a rotation locus of the rotating member 32. Thus, the engagement between the fixed member 31 and the rotating member 32 can be made smoother by the above arrangement.

As shown in fig. 4, in some embodiments of the present invention, the first stopper plate 312 may be provided with a first guide groove 312a extending along a rotation track of the rotating member 32, and the opening and closing device 3 may further include a first guide post 35, the first guide post 35 may be fixed to the rotating member 32 to rotate synchronously with the rotating member 32, and the first guide post 35 may extend into the first guide groove 312a to be slidably engaged with the first guide groove 312 a.

For example, the rotating member 32 may be provided with a first fitting hole 321b, the first fitting hole 321b may be disposed opposite to the first guide groove 312a, and the first guide post 35 may sequentially pass through the first guide groove 312a and the first fitting hole 321b to be positioned on the rotating member 32. When the rotating member 32 is slidably engaged with the fixed member 31, the first guide post 35 may move synchronously with the rotating member 32, and the first guide post 35 may be slidably engaged with the first guide groove 312a while moving. The first guide post 35 may rotate in the first mounting hole 321b, and the first guide post 35 may revolve in the first guide groove 312a about the center of the first guide groove 312 a.

Therefore, with the above arrangement, the first guide post 35 not only can serve to connect the fixed member 31 and the rotating member 32, but also the first guide post 35 and the first guide groove 312a can make the engagement between the fixed member 31 and the rotating member 32 more firm, and can prevent the rotating member 32 from being disengaged from the sliding groove 31a, so that the engagement between the rotating member 32 and the fixed member 31 can be more stable and smooth.

As shown in fig. 4, in some embodiments of the present invention, the rotating component 32 may include two second limiting plates 321 arranged at intervals, the two second limiting plates 321 may correspond to the two first limiting plates 312 one by one, and the second limiting plates 321 are slidably engaged with the inner peripheral walls of the corresponding first limiting plates 312, so that the engaging structure of the rotating component 32 and the fixed component 31 may be more firm. For example, in the specific example shown in fig. 4, the rotating member 32 includes a connecting plate 322 having a circular arc shape, the connecting plate 322 is disposed concentrically with the fixing plate 311, the connecting plate 322 is connected to the switching door 34, and two second stopper plates 321 are disposed on opposite sidewalls of the connecting plate 322 and extend downward relative to the connecting plate 322. When the rotating member 32 is engaged with the fixed member 31, the connecting plate 322 is located radially outward of the fixed plate 311, and the two second stopper plates 321 are located inward of the corresponding first stopper plates 312.

As shown in fig. 4, in some embodiments of the present invention, the second limiting plate 321 may be provided with a second guide groove 321a extending along the rotation track of the rotating member 32, and the opening and closing device 3 may further include a second guide post 36, and the second guide post 36 may be fixed on the fixed member 31 and extend into the second guide groove 321a to be slidably engaged with the second guide groove 321 a. For example, the fixing member 31 may be provided with a second fitting hole 312b, the second fitting hole 312b may be disposed opposite to the second guide groove 321a, and the second guide post 36 may sequentially pass through the second fitting hole 312b and the second guide groove 321a to be positioned on the fixing member 31. The second guide groove 321a may be slidably engaged with the second guide post 36 when the rotating member 32 is slidably engaged with the fixed member 31.

Therefore, with the above arrangement, the second guide posts 36 not only can serve to connect the fixed member 31 and the rotating member 32, but also the second guide posts 36 and the second guide grooves 321a are in sliding engagement, so that the fixed member 31 and the rotating member 32 can be more firmly engaged, the rotating member 32 can be prevented from being disengaged from the sliding grooves 31a, and the engagement between the rotating member 32 and the fixed member 31 can be more smoothly and stably engaged.

In some embodiments of the present invention, the fixed member 31 and the rotating member 32 may be concentrically disposed. Specifically, both the fixed member 31 and the rotating member 32 may be formed in an arc shape, and the center positions of the fixed member 31 and the rotating member 32 are the same. Thus, with the above arrangement, the rotating member 32 can be stably slidably fitted to the inner peripheral wall of the fixed member 31, and the rotating member 32 can be prevented from being caught in the sliding groove 31a, thereby enabling the opening/closing door 34 to rotate more smoothly. It is understood that the positions of the centers of the fixed member 31 and the rotating member 32 may be different, as long as the normal opening and closing of the door 34 can be satisfied.

As shown in fig. 10, according to some embodiments of the present invention, the lifting platform 1 further includes a support assembly 13, and the support assembly 13 is telescopically provided under the placing plate 12 to support the placing plate 12. The support assembly 13 may support the placing plate 12, thereby improving the structural stability of the lifting platform 1.

In the specific example shown in fig. 10, the support assembly 13 may include at least one connection arm group 13a, wherein each connection arm group 13a may include a first pivot seat 134, a second pivot seat 135, a first slide seat 136, a second slide seat 137, a first connection arm 131 and a second connection arm 132, the first pivot seat 134 may be fixedly disposed at the bottom of the placing board 12, the first pivot seat 134 and the second pivot seat 135 may be disposed at an interval in the up-down direction, the second slide seat 137 may be fixedly disposed at the bottom of the placing board 12, the second slide seat 137 and the first slide seat 136 may be disposed at an interval in the up-down direction, an upper end of the first connection arm 131 may be pivotably connected to the first pivot seat 134, a lower end of the first connection arm 131 may be rotatably and slidably connected to the first slide seat 136, an upper end of the second connection arm 132 may be rotatably and slidably connected to the second slide seat 137, the lower end of the second connecting arm 132 may be pivotally connected to the second pivot mount 135, and the first connecting arm 131 and the second connecting arm 132 may be pivotally connected therebetween.

Specifically, when the charging device 100 charges the rail vehicle, the placing plate 12 moves upward, and the extending length of the supporting member 13 increases. The first connecting arm 131 and the second connecting arm 132 rotate relative to each other through the rotating shaft 133 so that the included angle α between the first connecting arm 131 and the second connecting arm 132 is reduced, the upper end of the first connecting arm 131 can rotate relative to the first pivot seat 134, the lower end of the first connecting arm 131 can rotate relative to the first sliding seat 136, and the first connecting arm 131 can slide forward relative to the first sliding seat 136 while being rotatably engaged with the first sliding seat 136. The lower end of the second connecting arm 132 can rotate relative to the second pivot seat 135, the upper end of the second connecting arm 132 can rotate relative to the second sliding seat 137, and the second connecting arm 132 can slide forward relative to the second sliding seat 137 while being rotatably matched with the second sliding seat 137. The sliding distance of the first connecting arm 131 relative to the first sliding seat 136 is the same as the sliding distance of the second connecting arm 132 relative to the second sliding seat 137.

When the charging of the rail vehicle is completed, the placing plate 12 is moved downward, and the extension length of the supporting member 13 is reduced. The first connecting arm 131 and the second connecting arm 132 rotate relative to each other so that the included angle α between the first connecting arm 131 and the second connecting arm 132 is increased, the upper end of the first connecting arm 131 can rotate relative to the first pivot seat 134, the lower end of the first connecting arm 131 can rotate relative to the first sliding seat 136, and the first connecting arm 131 can slide backwards relative to the first sliding seat 136 while being in rotating fit with the first sliding seat 136. The lower end of the second connecting arm 132 can rotate relative to the second pivot seat 135, the upper end of the second connecting arm 132 can rotate relative to the second sliding seat 137, and the second connecting arm 132 can slide backwards relative to the second sliding seat 137 while being rotatably matched with the second sliding seat 137. The sliding distance of the first connecting arm 131 relative to the first sliding seat 136 is the same as the sliding distance of the second connecting arm 132 relative to the second sliding seat 137.

In some embodiments of the present invention, the first sliding seat 136 may be provided with a first sliding slot 136a, the lower end of the first connecting arm 131 may be provided with a first sliding block 131a, the first sliding block 131a is rotatably and slidably engaged with the first sliding slot 136a, the second sliding seat 137 may be provided with a second sliding slot 137a, the upper end of the second connecting arm 132 may be provided with a second sliding block 132a, and the second sliding block 132a is rotatably and slidably engaged with the second sliding slot 137a, so that, by the above arrangement, the engagement structure between the first connecting arm 131 and the first sliding seat 136, and between the second connecting arm 132 and the second sliding seat 137 may be simpler, and the operation of the supporting assembly 13 may be smoother.

Alternatively, the lower end of the first connecting arm 131 may be rotatably connected to the first sliding block 131a, the first sliding block 131a may be slidably engaged with the first sliding slot 136a, and when the extending length of the supporting member 13 is changed, the first connecting arm 131 may apply a pushing force to the first sliding block 131a to make the first sliding block 131a slide back and forth in the first sliding slot 136 a.

Alternatively, the upper end of the second connecting arm 132 may also be rotatably connected to the second sliding block 132a, the second sliding block 132a may be slidably engaged with the second sliding slot 137a, and when the extending length of the supporting component 13 is changed, the second connecting arm 132 may apply a pushing force to the second sliding block 132a to make the second sliding block 132a slide back and forth in the second sliding slot 137 a.

Alternatively, the supporting assembly 13 may also include a plurality of connecting arm sets 13a, the connecting arm sets 13a may be sequentially connected in the vertical direction, and the connecting arm sets may be selectively arranged according to the lifting displacement of the placing plate 12, which is not particularly limited in the present invention. It will be understood that the design of the support assembly 13 is not exclusive, as long as the raising and lowering of the plate 12 can be accommodated. For example, the support member 13 may be a spring.

As shown in fig. 1-2, in some embodiments of the present invention, the lifting platform 1 may further include an opening/closing auxiliary member 14, the opening/closing auxiliary member 14 may be disposed on the placing plate 12 and may move synchronously with the placing plate 12, and when the placing plate 12 is lifted, the opening/closing auxiliary member 14 may contact with the rotating member 32 to drive the rotating member 32 to rotate until the opening/closing door 34 is separated from the charging rail member 2, so that the charging safety performance of the charging device 100 may be improved. Specifically, when the placing plate 12 is raised, the charging rail member 2 can drive the switch door 34 to rotate, and one end of the switch door 34 is stopped against the charging rail member 2. As the standing plate 12 continues to rise, the opening and closing assistance member 14 may be engaged with the rotating member 32 to cause the rotating member 32 to bring the opening and closing door 34 to rotate again to separate the opening and closing door 34 from the charging rail member 2.

As shown in fig. 6 to 7, in a specific example of the present invention, the charging rail member 2 may include a charging rail 21 and two insulating holders 22 disposed at an interval, lower ends of the two insulating holders 22 are respectively fixed on the placing plate 12, upper ends of the two insulating holders 22 are respectively supported at a bottom of the charging rail 21, the opening and closing assistance member 14 is located at one end of the charging rail 21 and disposed at an interval from the charging rail 21, and a height of the opening and closing assistance member 14 is smaller than a height of the insulating holders 22. When the placing plate 12 is lifted, the charging rail 21 first contacts with the switch door 34 and drives the switch door 34 to rotate in the forward direction, the rotating part 32 and the fixing part 31 can be driven to be in sliding fit while the switch door 34 rotates, and the free end of the switch door 34 can be lapped on the charging rail 21. As the standing plate 12 continues to rise, the opening/closing assistance member 14 comes into contact with the rotating member 32 and can drive the rotating member 32 to continue the forward rotation, whereby the rotation angle of the opening/closing door 34 can be increased and the opening/closing door 34 is separated from the charging rail member 2. When the placing panel 12 is lowered, the opening/closing assistance member 14 engages with the rotating member 32 and drives the rotating member 32 to continue the reverse rotation. As the placing plate 12 continues to descend, the opening and closing door 34 is just overlapped on the charging rail 21 when the opening and closing assistance member 14 is about to be separated from the rotating member 32. As the charging rail 21 descends, the switching door 34 can rotate to the retracted position in synchronization with the rotating member 32 by its own weight.

As shown in fig. 5 to 7, in some embodiments of the present invention, there may be two switching doors 34, each switching door 34 may be connected to a corresponding rotating member 32, and the opening and closing assistance member 14 may be located between the two rotating members 32 and drive the two rotating members 32 to rotate synchronously, thereby improving the opening and closing efficiency of the opening and closing device 3.

Specifically, as shown in fig. 5, when the switch door 34 is in the closed position, the charging rail member 2 is located below the switch door 34, and the opening/closing assist member 14 and the charging rail 21 are both located at the intermediate position between the two switch doors 34. As shown in fig. 6, when the placing board 12 is raised, the charging rail 21 is simultaneously in contact with the two switch doors 34, the charging rail 21 can drive the switch door 34 located on the left side to rotate counterclockwise, the charging rail 21 can drive the switch door 34 located on the right side to rotate clockwise, and the free ends of the two switch doors 34 can be overlapped on the charging rail 21. As shown in fig. 7, as the placing plate 12 continues to rise, the opening and closing assistance member 14 starts to contact the two rotation members 32 and can drive the two rotation members 32 to continue rotating, whereby the rotation angle of the two opening and closing doors 34 can be increased, and the two opening and closing doors 34 are simultaneously separated from the charging rail member 2. When the placement plate 12 is lowered, the opening/closing assist member 14 engages with the two rotating members 32 to drive the rotating member 32 on the left side to rotate clockwise and the rotating member 32 on the right side to rotate counterclockwise. As the placing plate 12 continues to descend, the two opening and closing doors 34 just overlap the charging rail 21 when the opening and closing assistance member 14 is about to be separated from the two rotation members 32. As the charging rail 21 descends, the two switching doors 34 can rotate to the avoidance position in synchronization with the rotating member 32 under their own weight.

As shown in fig. 8, in some specific examples of the present invention, the arc of the fixed member 31 may extend along a first extending track 3a, the rotating member 32 may rotate along a second extending track 3b, and a tangent point 3c of the first extending track 3a and the second extending track 3b is located below the opening/closing door 34. When the opening/closing assistance member 14 is engaged with the rotation member 32, the tangent point 3c of the first extended locus 3a and the second extended locus 3b is rotated upward. When the opening/closing door 34 is separated from the charging rail member 2 and rotated to the escape position, the tangent point 3c of the first extended locus 3a and the second extended locus 3b is just tangent to the side wall of the opening/closing assistance member 14. Alternatively, the width L of the opening and closing assistance member 14 is the same as the minimum distance between the two rotation members 32 during rotation, thereby making it possible to make the entire structure of the opening and closing device 3 more compact and operate more smoothly.

In some embodiments of the present invention, the opening/closing auxiliary members 14 may be disposed at both ends of the charging rail 21 in the length direction, and the rotating members 32 and the fixing members 31 may be disposed at both ends of the opening/closing door 34 in the length direction, so that the two opening/closing auxiliary members 14 may be simultaneously engaged with the corresponding rotating members 32, thereby ensuring that the opening/closing door 34 is completely separated from the charging rail member 2, and improving the safety of the charging device 100.

In some embodiments of the present invention, the rotating member 32 may be provided with a plurality of first engaging teeth (not shown), and the opening/closing auxiliary member 14 may be provided with a plurality of second engaging teeth (not shown), and the plurality of first engaging teeth may be engaged with the plurality of second engaging teeth to drive the rotating member 32 to rotate, so that the acting force between the rotating member 32 and the opening/closing auxiliary member 14 may be increased, and thus, the opening/closing door 34 may be ensured to be accurately rotated to the retracted position. It is of course understood that a first friction surface may be provided on the rotary part 32, a second friction surface may be provided on the outer circumferential wall of the opening/closing assistance member 14, and the friction fit between the first friction surface and the second friction surface may increase the friction force between the rotary part 32 and the opening/closing assistance member 14, thereby also ensuring that the opening/closing door 34 can be accurately rotated to the retracted position.

As shown in fig. 9, according to some embodiments of the present invention, the switch door 34 may be provided with a first magnetic member 37, the supporting member 33 may be provided with a second magnetic member 38, and the first magnetic member 37 and the second magnetic member 38 are magnetically engaged to drive the switch door 34 to rotate to the closed position. Specifically, the magnetic force between the first magnetic member 37 and the second magnetic member 38 can drive the opening/closing door 34 to rotate to the closed position smoothly, thereby ensuring a smoother closing process of the opening/closing door 34.

As shown in fig. 1, according to some embodiments of the present invention, the supporting member 33 may be a box 33a having an extending opening 331, the switch door 34 may be rotatably provided on the box 33a to open or close the extending opening 331, the driving member 11 may be placed in the box 33a, and the charging rail 21 may extend out of the box 33a through the extending opening 331 or be received in the box 33a, so that the sealing effect of the opening and closing device 3 may be improved, and thus the charging rail member 2 may be better protected. The form of the support member 33 is not limited to this. For example, the support member 33 may be an inner peripheral wall of the rail beam 300, the charging rail member 2 may be provided in the escape space 300a of the rail beam 300, and the opening and closing door 34 may cooperate with opposite side walls of the rail beam 300 to define a receiving space of the charging rail member 2, whereby the design form of the opening and closing device 3 may be made simpler.

In some embodiments of the present invention, a first flexible layer may be disposed on the inner peripheral wall of the opening/closing door 34, and a second flexible layer may be disposed on the outer peripheral wall of the opening/closing assistance member 14. Thus, the above arrangement allows the charging rail 21 and the opening/closing door 34, and the opening/closing assist member 14 and the outer peripheral wall of the rotating member 32 to be in flexible contact with each other, thereby reducing the operating noise of the charging device 100.

As shown in fig. 11, in some embodiments of the present invention, the box 33a may include an intermediate support 332 and a covering member 333, the covering member 333 may be enclosed outside the intermediate support 332, and the intermediate support 332 may be formed as a hollow member, so that the self weight of the box 33a may be reduced while the structural strength of the box 33a is satisfied, and the effects of convenient transportation and convenient assembly may be achieved. Alternatively, the intermediate support frame 332 may be a metal pipe or a metal profile, and the wrapping member 333 may be a thin steel plate.

The charging device 100 of the present invention, which is provided in the escape space 300a of the track beam 300 and can charge the rail vehicle, will be described in detail with reference to the accompanying drawings as one embodiment. It is to be understood that the following description is only exemplary, and not restrictive of the invention.

As shown in fig. 10, the elevating platform 1 may include a driving unit 11, a placing plate 12, and a supporting unit 13, the driving unit 11 may be connected to the placing plate 12 to drive the placing plate 12 to move up and down, and the supporting unit 13 may include at least one connecting arm group 13 a. Wherein each of the connecting arm groups 13a may include a first pivot base 134, a second pivot base 135, a first sliding base 136, a second sliding base 137, a first connecting arm 131 and a second connecting arm 132, the first pivot base 134 may be fixedly disposed at the bottom of the placing board 12, the first pivot base 134 and the second pivot base 135 may be disposed at an interval in the up-down direction, the second sliding base 137 may be fixedly disposed at the bottom of the placing board 12, the second sliding base 137 and the first sliding base 136 may be disposed at an interval in the up-down direction, the upper end of the first connecting arm 131 may be pivotally connected to the first pivot base 134, the lower end of the first connecting arm 131 may be rotatably and slidably connected to the first sliding base 136, the upper end of the second connecting arm 132 may be rotatably and slidably connected to the second sliding base 137, the lower end of the second connecting arm 132 may be pivotally connected to the second pivot base 135, the first connecting arm 131 and the second connecting arm 132 are pivotally connected.

When the placing plate 12 is moved upward, the extending length of the supporting member 13 is increased. The first connecting arm 131 and the second connecting arm 132 rotate relative to each other so that the included angle α between the first connecting arm 131 and the second connecting arm 132 is reduced, the upper end of the first connecting arm 131 can rotate relative to the first pivot seat 134, the lower end of the first connecting arm 131 can rotate relative to the first sliding seat 136, and the first connecting arm 131 can slide forward relative to the first sliding seat 136 while being rotatably engaged with the first sliding seat 136. The lower end of the second connecting arm 132 can rotate relative to the second pivot seat 135, the upper end of the second connecting arm 132 can rotate relative to the second sliding seat 137, and the second connecting arm 132 can slide forward relative to the second sliding seat 137 while being rotatably matched with the second sliding seat 137. The sliding distance of the first connecting arm 131 relative to the first sliding seat 136 is the same as the sliding distance of the second connecting arm 132 relative to the second sliding seat 137.

When the placing plate 12 is moved downward, the extending length of the supporting member 13 is reduced. The first connecting arm 131 and the second connecting arm 132 rotate relative to each other so that the included angle α between the first connecting arm 131 and the second connecting arm 132 is increased, the upper end of the first connecting arm 131 can rotate relative to the first pivot seat 134, the lower end of the first connecting arm 131 can rotate relative to the first sliding seat 136, and the first connecting arm 131 can slide backwards relative to the first sliding seat 136 while being in rotating fit with the first sliding seat 136. The lower end of the second connecting arm 132 can rotate relative to the second pivot seat 135, the upper end of the second connecting arm 132 can rotate relative to the second sliding seat 137, and the second connecting arm 132 can slide backwards relative to the second sliding seat 137 while being rotatably matched with the second sliding seat 137. The sliding distance of the first connecting arm 131 relative to the first sliding seat 136 is the same as the sliding distance of the second connecting arm 132 relative to the second sliding seat 137.

Charging rail part 2 includes the insulating seat 22 that charging rail 21 and two intervals set up, and the lower extreme of two insulating seats 22 is fixed respectively on placing board 12, and the bottom at charging rail 21 is supported respectively to the upper end of two insulating seats 22, and the length direction's of charging rail 21 both ends all are equipped with switching auxiliary member 14, and two switching auxiliary members 14 all set up with charging rail 21 interval, and switching auxiliary member 14 highly is less than insulating seat 22's height.

The opening and closing device 3 may include a fixed member 31, a rotating member 32, and two opening and closing doors 34, wherein the fixed member 31 may be fixed on a supporting member 33, the opening and closing doors 34 may be rotatably provided on the supporting member 33, the rotating member 32 may be slidably engaged with the fixed member 31, and the rotating member 32 is connected with the opening and closing doors 34 to define a rotation track of the opening and closing doors 34. The supporting member 33 may be a box 33a having an extending opening 331, the opening and closing door 34 may be rotatably provided on the box 33a to open or close the extending opening 331, the driving member 11 may be placed in the box 33a, and the charging rail 21 may extend out of the box 33a through the extending opening 331 or be received in the box 33 a.

As shown in fig. 4, the fixing member 31 includes a fixing plate 311 and two first limiting plates 312, the fixing plate 311 and the two first limiting plates 312 may be formed in a circular arc shape, the fixing plate 311 is fixed on an inner peripheral wall of the box body 33a, the two first limiting plates 312 may be spaced apart from opposite side walls of the fixing plate 311, the two first limiting plates 312 extend downward relative to the side walls of the fixing plate 311, and the fixing plate 311 and the two first limiting plates 312 may define an open sliding groove 31a together. Each of the first stopper plates 312 is provided with a first guide groove 312a extending along the rotation locus of the rotating member 32.

The rotating member 32 includes a circular arc-shaped connecting plate 322, the connecting plate 322 is concentrically disposed with the fixing plate 311, the connecting plate 322 is connected to the corresponding opening/closing door 34, and two second limiting plates 321 are disposed on opposite sidewalls of the connecting plate 322 and extend downward relative to the connecting plate 322. When the rotating member 32 is engaged with the fixed member 31, the connecting plate 322 is located radially outward of the fixed plate 311, and the two second stopper plates 321 are located inward of the corresponding first stopper plates 312. Each of the second stopper plates 321 is provided with a second guide groove 321a extending along the rotation locus of the rotating member 32.

The rotating member 32 may be provided with a first fitting hole 321b, the fixing member 31 may be provided with a second fitting hole 312b, the first fitting hole 321b may be disposed opposite to the first guide groove 312a, and the second fitting hole 312b may be disposed opposite to the second guide groove 321 a. When the rotating member 32 is engaged with the fixed member 31, the rotating member 32 may extend into the sliding groove 31a, the connecting plate 322 is located at a radial outer side of the fixed plate 311, and the two second limiting plates 321 are located at an inner side of the corresponding first limiting plate 312. The first guide post 35 may sequentially pass through the first guide slot 312a and the first fitting hole 321b to be positioned on the rotating member 32, and the second guide post 36 may sequentially pass through the second fitting hole 312b and the second guide slot 321a to be positioned on the fixed member 31. When the rotating member 32 is slidably fitted to the fixed member 31, the first guide post 35 may move synchronously with the rotating member 32, the first guide post 35 may be slidably fitted to the first guide groove 312a while moving, and the second guide groove 321a may be slidably fitted to the second guide post 36.

Specifically, when the charging device 100 charges the railway vehicle, the driving member 11 drives the placing plate 12 to ascend, the charging rail 21 simultaneously contacts with the two switch doors 34, the charging rail 21 can drive the switch door 34 located on the left side to rotate counterclockwise, the charging rail 21 can drive the switch door 34 located on the right side to rotate clockwise, and the free ends of the two switch doors 34 can be overlapped on the charging rail 21. As shown in fig. 7, as the placing plate 12 continues to rise, the opening/closing assistance member 14 starts to contact the two rotation members 32 and can drive the two rotation members 32 to continue rotating, whereby the rotation angle of the two opening/closing doors 34 can be increased and the opening/closing doors 34 are separated from the charging rail member 2. When the placement plate 12 is lowered, the opening/closing assist member 14 engages with the two rotating members 32 to drive the rotating member 32 on the left side to rotate clockwise and the rotating member 32 on the right side to rotate counterclockwise. As the placing plate 12 continues to descend, the two opening and closing doors 34 just overlap the charging rail 21 when the opening and closing assistance member 14 is about to be separated from the two rotation members 32. As the charging rail 21 descends, the two switching doors 34 can rotate to the avoidance position in synchronization with the rotating member 32 under their own weight.

The arc of the fixed part 31 can extend along the first extending track 3a, the rotating part 32 can rotate along the second extending track 3b, and the tangent point 3c of the first extending track 3a and the second extending track 3b is positioned below the switch door 34. When the opening/closing assistance member 14 is engaged with the rotation member 32, the tangent point 3c of the first extended locus 3a and the second extended locus 3b is rotated upward. When the opening/closing door 34 is separated from the charging rail member 2 and rotated to the escape position, the tangent point 3c of the first extended locus 3a and the second extended locus 3b is just tangent to the side wall of the opening/closing assistance member 14. The width L of the opening/closing assistance member 14 is the same as the minimum distance between the two rotation members 32 during rotation, thereby making it possible to make the entire structure of the opening/closing device 3 more compact and to operate more smoothly.

As shown in fig. 12 to 13, a charging system 200 according to an embodiment of the present invention includes: according to the charging device 100 and the collector shoe 201 of the above-mentioned embodiment of the present invention, the collector shoe 201 may contact with the charging rail 21 to form an electrical connection, and the collector shoe 201 may transfer the collected electric quantity into the battery on the vehicle body 400, thereby achieving the purpose of charging the railway vehicle.

In the specific example shown in fig. 12-13, the charging system 200 may further include a telescopic arm assembly 202 disposed on the vehicle body 400, the telescopic arm assembly 202 includes a first telescopic arm 202a and a second telescopic arm 202b, one end of the first telescopic arm 202a is connected to the vehicle body 400 of the railway vehicle, the other end of the first telescopic arm 202a is rotatably connected to the second telescopic arm 202b, and one end of the second telescopic arm 202b, which is far away from the first telescopic arm 202a, is provided with a collector shoe 201. When the rail vehicle does not need to be charged, the first telescopic arm 202a and the second telescopic arm 202b are rotated with each other to be folded and stored at the bottom of the vehicle body 400. When the charging system 200 charges the rail vehicle, the first telescopic arm 202a and the second telescopic arm 202b rotate relative to each other, and the second telescopic arm 202b can bring the collector shoe 201 into contact with the charging rail 21 to form an electrical connection.

According to the charging system 200 of the embodiment of the invention, by arranging the charging device 100, not only can the operation of the charging system 200 be smoother, but also the use safety of the charging system 200 can be improved.

In the description of the present invention, it is to be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A charging device for a rail vehicle, comprising:

the lifting platform comprises a driving piece and a placing plate, and the driving piece is connected with the placing plate to drive the placing plate to move up and down;

a charging rail part including a charging rail placed on the placing plate;

the switching device comprises a fixed part, a rotating part and a switching door, the fixed part is fixed on a supporting part, the switching door is rotatably arranged on the supporting part, the rotating part is in sliding fit with the fixed part, the rotating part is connected with the switching door to limit the rotating track of the switching door, the charging rail part is in contact with the switching door to drive the switching door to rotate to an avoiding position when the charging rail ascends, the switching door rotates to a closing position under the action of gravity when the charging rail descends, the switching door avoids the moving path of the charging rail at the avoiding position, and the switching door is positioned above the charging rail at the closing position;

the fixed component and the rotating component are both formed into circular arcs, a sliding groove is formed in the fixed component, and a part of the rotating component is arranged in the sliding groove and is in sliding fit with the sliding groove.

2. The railway vehicle charging device as claimed in claim 1, wherein the fixing member comprises a fixing plate and two first limiting plates, the two first limiting plates are spaced apart from each other on opposite side walls of the fixing plate, and the fixing plate and the two first limiting plates cooperate to define the sliding groove.

3. The charging device for the railway vehicle as claimed in claim 2, wherein the first limiting plate is provided with a first guide groove extending along a rotation track of the rotating member, the opening and closing device further comprises a first guide post fixed to the rotating member to rotate synchronously with the rotating member, and the first guide post extends into the first guide groove to be slidably fitted into the first guide groove.

4. The charging device for the railway vehicle as claimed in claim 2, wherein the rotating member comprises two second limiting plates arranged at intervals, the two second limiting plates correspond to the two first limiting plates one by one, and the second limiting plates are in sliding fit with the inner peripheral walls of the corresponding first limiting plates.

5. The charging device for the railway vehicle as claimed in claim 4, wherein the second limiting plate is provided with a second guide groove extending along a rotation track of the rotating member, and the opening/closing device further comprises a second guide post fixed to the fixing member and extending into the second guide groove to be slidably fitted into the second guide groove.

6. The charging device for a railway vehicle according to claim 1, wherein the stationary member and the rotating member are concentrically disposed.

7. The charging device for a railway vehicle according to claim 1, wherein a rotation angle of the rotating member with respect to a rotation center thereof is less than 90 °.

8. The rail vehicle charging device of claim 1, wherein the lift platform further comprises: a support assembly telescopically disposed below the placing plate to support the placing plate.

9. The rail vehicle charging device of claim 8, wherein the lift platform further comprises: the opening and closing auxiliary piece is arranged on the placing plate and moves along with the placing plate synchronously, and when the placing plate ascends, the opening and closing auxiliary piece can be in contact with the rotating component to drive the rotating component to rotate until the opening and closing door is separated from the charging rail component.

10. The railway vehicle charging device as claimed in claim 9, wherein the number of the switching doors is two, each of the switching doors is connected to a corresponding one of the rotating members, and the switching auxiliary member is located between the two rotating members and drives the two rotating members to rotate synchronously.

11. The charging device for a railway vehicle according to claim 10, wherein the opening/closing assistance member is provided at both ends of the charging rail in a length direction.

12. The railway vehicle charging device as claimed in claim 9, wherein the rotating member is provided with a plurality of first engaging teeth, the opening/closing auxiliary member is provided with a plurality of second engaging teeth, and the plurality of first engaging teeth and the plurality of second engaging teeth are engaged with each other to drive the rotating member to rotate.

13. The charging device for the railway vehicle as claimed in claim 1, wherein the switch door is provided with a first magnetic member, the support member is provided with a second magnetic member, and the first magnetic member and the second magnetic member are magnetically attracted and matched to drive the switch door to rotate to the closed position.

14. The charging device for the railway vehicle as claimed in any one of claims 1 to 13, wherein the supporting member is a case having an extension opening, the opening and closing door is rotatably provided on the case to open or close the extension opening, the driving member is placed in the case, and the charging rail is extended out of or received into the case through the extension opening.

15. The railway vehicle charging device as claimed in claim 14, wherein the case includes a middle support frame and a cover member, the cover member being enclosed at an outer side of the middle support frame, and the middle support frame is formed as a hollow member.

16. The rail vehicle charging device of claim 15, wherein the intermediate support frame is a metal pipe or a metal profile.

17. A charging system, comprising:

a charging device according to any one of claims 1-16;

a collector shoe in contact with the charging rail to form an electrical connection.