CN111231682B

CN111231682B - Charging system

Info

Publication number: CN111231682B
Application number: CN201811447106.0A
Authority: CN
Inventors: 肖志鸿; 谭志成; 其他发明人请求不公开姓名
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2018-11-29
Filing date: 2018-11-29
Publication date: 2021-11-12
Anticipated expiration: 2038-11-29
Also published as: CN111231682A

Abstract

The invention discloses a charging system, comprising: current collector, lift platform and charging rail. The current collector is established on rail vehicle, and lift platform is including placing board and driving piece, and the upper end of driving piece links to each other with placing the board and place the board with the drive and reciprocate, and the rail that charges is established on placing the board in order to follow and place the board and reciprocate, and the rail that charges can be portable to contact with the current collector. According to the charging system, the lifting platform can drive the charging rail to move up and down to be in contact with or separated from the current collector, so that the charging mode of the charging system is simpler, the use safety is high, and the charging efficiency can be improved. Moreover, the lifting platform drives the charging rail to contact with the current collector, so that friction and collision between the charging rail and the current collector can be reduced, working noise of the rail vehicle during charging can be reduced, and the service life of the current collector can be prolonged.

Description

Charging system

Technical Field

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

Background

In the correlation technique, be equipped with on rail vehicle's the platform or the vehicle section and fill electric pile, when rail vehicle need charge, need the manual work to fill electric pile and go up the rifle and insert in rail vehicle's the interface that charges, not only operate inconvenience, influence charge efficiency from this, adopt the artifical mode of charging still can have the potential safety hazard of electrocuting moreover.

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 system, which has the advantages of convenient operation and high safety.

According to an embodiment of the present invention, a charging system for charging a rail vehicle traveling on a rail beam includes: the current collector is arranged on the rail vehicle; the lifting platform comprises a placing plate and a driving piece, and the upper end of the driving piece is connected with the placing plate to drive the placing plate to move up and down; the charging rail is arranged on the placing plate to move up and down along with the placing plate, and the charging rail can move to be in contact with the current collector.

According to the charging system provided by the embodiment of the invention, the lifting platform can drive the charging rail to move up and down to be in contact with or separate from the current collector, so that the charging mode of the charging system is simpler, the use safety is high, and the charging efficiency can be improved. Moreover, the lifting platform drives the charging rail to contact with the current collector, so that friction and collision between the charging rail and the current collector can be reduced, working noise of the rail vehicle during charging can be reduced, and the service life of the current collector can be prolonged.

According to some embodiments of the invention, the lift platform further comprises: the upper end of the telescopic piece is connected with the placing plate, and the telescopic piece can stretch in the height direction to support the placing plate when the placing plate moves.

In some embodiments of the present invention, each of the telescoping members comprises at least one connection arm set, each of the connection arm sets comprising a first pivot mount, a second pivot mount, a first slide mount, a second slide mount, a first connection arm, and a second connection arm; the first pivoting seat is fixedly arranged at the bottom of the placing plate, and the first pivoting seat and the second pivoting seat are arranged at intervals in the vertical direction; the second sliding seat is fixedly arranged at the bottom of the placing plate, and the second sliding seat and the first sliding seat are arranged at intervals in the vertical direction; the first connecting arm and the second connecting arm are connected in a pivoting manner; the upper end of the first connecting arm is pivotally connected with the first pivoting seat, and the lower end of the first connecting arm is rotatably and slidably connected with the first sliding seat; the upper end of the second connecting arm is rotatably and slidably connected with the second sliding seat, and the lower end of the second connecting arm is pivotally connected with the second pivoting seat.

In some embodiments of the present invention, the first sliding seat is provided with a first sliding slot, the lower end of the first connecting arm is provided with a first sliding block, and the first sliding block is rotatably and slidably engaged with the first sliding slot; the second sliding seat is provided with a second sliding groove, a second sliding block is arranged at the upper end of the second connecting arm, and the second sliding block is rotatably and slidably matched with the second sliding groove.

According to some embodiments of the invention, the lift platform further comprises: an opening and closing device having an open state and a closed state; when the opening and closing device is in an opening state, the opening and closing device avoids a movement path of the charging rail; when the opening and closing device is in a closed state, the opening and closing device blocks the rising of the charging rail.

In some embodiments of the present invention, the opening and closing device includes: the linkage mechanism is connected with the opening and closing plate and the placing plate; when the placing plate moves up and down, the placing plate drives the opening and closing plate to move through the linkage mechanism, so that the opening and closing device is switched between an opening state and a closing state; when the opening and closing device is in an opening state, the opening and closing plate avoids the movement path of the charging rail, and in a closing state, the opening and closing plate blocks the rising of the charging rail.

In some embodiments of the invention, the linkage comprises: one end of the vertical linkage unit is connected with the placing plate so as to be driven by the placing plate to move; the other end of the vertical linkage unit is connected with the transverse linkage unit to drive the transverse linkage unit to move, and the transverse linkage unit is connected with the opening and closing plate and drives the opening and closing plate to move.

In some embodiments of the present invention, the vertical linkage unit comprises: the installation base is arranged on the placing plate, the first connecting piece is arranged on the placing plate, one end of the first connecting piece is matched with the installation base in a rotating mode, and the other end of the first connecting piece is connected with the transverse linkage unit in a rotating mode.

In some embodiments of the invention, the vertical linkage unit further comprises: and one end of the second connecting piece is in running fit with the mounting base, and the other end of the second connecting piece is connected with the transverse linkage unit.

In some embodiments of the invention, the vertical linkage unit further comprises: and the first end of the third connecting piece is rotatably arranged on the mounting base, and the second end of the third connecting piece is simultaneously in running fit with the first connecting piece and the second connecting piece.

In some embodiments of the invention, the lateral linkage unit comprises: the moving member is connected with the vertical linkage unit and driven by the vertical linkage unit to move; the fixed part is in sliding fit with the moving part and is static relative to the track beam; the two rotating rods are arranged in a crossed mode and are in pivot connection through pivot shafts, one end of each rotating rod is in pivot connection with one opening and closing plate, and the other end of each rotating rod is in rotatable and slidable connection with the other opening and closing plate; the moving member with two dwang link to each other in order to change the contained angle of two dwang.

In some embodiments of the present invention, there are two opening and closing plates, each of the opening and closing plates is provided with a third sliding groove extending in a length direction thereof, a third sliding block slidably fitted with the third sliding groove is provided in the third sliding groove, two ends of the rotating rod are respectively rotatably connected to the third sliding blocks in the different third sliding grooves, and the pivot shaft is stationary relative to the track beam.

In some embodiments of the present invention, there are two opening and closing plates, at least one of the opening and closing plates is provided with a third sliding groove extending in a length direction thereof, a third sliding block slidably fitted with the third sliding groove is provided in the third sliding groove, the number of the third sliding blocks is two, one end of each of the rotating rods is rotatably connected to the third sliding block, and the other end of each of the rotating rods is rotatably connected to the corresponding opening and closing plate.

According to some embodiments of the invention, the lift platform further comprises: the containing box is provided with a containing space, the driving piece and the charging rail are arranged in the containing space, a protruding opening is formed in the top of the containing space, and the charging rail is suitable for penetrating through the protruding opening and extending out of the containing box.

According to some embodiments of the invention, the current collector comprises: a support bracket adapted to be secured to the rail vehicle; the connecting shaft is arranged on the supporting frame and can move up and down relative to the supporting frame; the elastic piece is respectively matched with the support frame and the connecting shaft; the positive current receiving plate and the negative current receiving plate are arranged at the lower end of the connecting shaft at intervals.

In some embodiments of the invention, the connecting shaft comprises: connecting columns; the outer barrel is sleeved outside the connecting column, the outer barrel can move up and down relative to the connecting column, the elastic part is sleeved outside the connecting column, one end of the elastic part abuts against the supporting frame, and the other end of the elastic part abuts against the outer barrel.

Optionally, the connecting column penetrates out of the upper end face of the support frame, and a stopping portion which is abutted against the upper end face of the support frame is arranged on the connecting column.

In some embodiments of the invention, the support frame comprises: a stationary plate adapted to be secured to the rail vehicle; the outer sleeve is arranged below the fixing plate and is arranged at intervals with the fixing plate; the two ends of each extension arm are respectively connected with the fixing plate and the outer sleeve, the upper end of the connecting shaft is connected with the fixing plate, and the lower end of the connecting shaft penetrates through the outer sleeve to be connected with the positive current receiving plate and the negative current receiving plate.

In some embodiments of the invention, one of the connecting shaft and the outer sleeve is provided with a rotation stopping block, and the other one is provided with a rotation stopping groove matched with the rotation stopping block.

In some embodiments of the invention, the support frame further comprises: and the inner sleeve is positioned between the outer sleeve and the connecting shaft.

In some embodiments of the invention, at least one of the plurality of extension arms is provided with a first weight-reducing slot.

In some embodiments of the invention, the current collector further comprises: the upper end of the fixed arm is connected with the connecting shaft, the lower end of the fixed arm extends downwards to form a first sub-arm and a second sub-arm which are arranged at intervals, the positive current receiving plate is arranged at the lower end of the first sub-arm, and the negative current receiving plate is arranged at the lower end of the second sub-arm.

Optionally, at least one of the first sub-arm and the second sub-arm is provided with a second weight-reducing slot.

In some embodiments of the present invention, a flexible buffer is disposed between the positive current receiving plate and the first sub-arm, and between the negative current receiving plate and the second sub-arm.

According to some embodiments of the invention, the current collectors are two, the charging rails are two and the two charging rails are divided into a positive charging rail and a negative charging rail; the charging system is configured such that when the rail vehicle is switched between forward running and u-turn running, the positive charging rail is adapted to be in switching contact with the positive current receiving plates of the two current collectors, and the negative charging rail is adapted to be in switching contact with the negative current receiving plates of the two current collectors.

In some embodiments of the present invention, the positive charging rail and the negative charging rail are both disposed on a track beam, and distances between the positive charging rail and the negative charging rail from a center line of the track beam are not equal.

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 an overall structural schematic diagram of a charging system 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 diagram of a matching structure of a charging rail and a current collector according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of the overall structure of a lift platform according to an embodiment of the present invention;

FIG. 5 is a side view of a lift platform according to an embodiment of the present invention;

FIG. 6 is a schematic view showing the overall structure of a container box according to an embodiment of the present invention;

fig. 7 is a schematic view of a cooperating structure of a lifting platform and an opening and closing device according to an embodiment of the present invention in a first view angle;

fig. 8 is a schematic view of a cooperating structure of the lifting platform and the opening and closing device according to the embodiment of the present invention in a second view angle;

fig. 9 is a schematic view of a cooperating structure of the lifting platform and the opening and closing device according to the embodiment of the present invention in a third view angle;

fig. 10 is a front view of a fitting structure of the elevating platform and the opening and closing means according to the embodiment of the present invention;

fig. 11 is a bottom view of a fitting structure of the elevating platform and the opening and closing means according to the first embodiment of the present invention;

fig. 12 is a bottom view of a fitting structure of the elevating platform and the opening and closing means according to the second embodiment of the present invention;

fig. 13 is an overall structural schematic diagram of a current collector according to an embodiment of the present invention;

fig. 14 is a cross-sectional view of a current collector according to an embodiment of the invention;

fig. 15 is a schematic view of a charging principle of the charging system according to the embodiment of the invention;

fig. 16 is a partial structural view of a track beam according to an embodiment of the present invention.

Reference numerals:

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

the current collector (1) is provided with a current collector,

a support frame 11, a fixing plate 111, an outer sleeve 112, a rotation-stopping groove 1121, an extension arm 113, a first weight-reducing groove 1131,

a connecting shaft 12, a connecting column 121, a stopping part 1211, a rotation stopping block 1212, an outer cylinder 122,

the elastic member 13 is provided at a position where,

a fixed arm 14, a first sub-arm 141, a second sub-arm 142, a flexible bumper 143, a second lightening slot 144,

a current-receiving plate 15, a positive current-receiving plate 151, a negative current-receiving plate 152, a guide 153,

the lifting platform 2 is arranged on the upper portion of the frame,

a placement plate 21 is placed on the upper surface of the body,

the drive member (22) is provided,

the length of the telescopic member (23),

the connecting arm set 231, the first connecting arm 2311, the first slider 2311a, the second connecting arm 2312, the second slider 2312a, the rotating shaft 2313, the first pivoting seat 2314, the second pivoting seat 2315, the first sliding seat 2316, the first sliding groove 2316a, the second sliding seat 2317, the second sliding groove 2317a,

the opening and closing means (24) are provided,

an opening and closing plate 241, a third sliding groove 2411,

a linkage mechanism 242, a vertical linkage unit 2421, a mounting base 24211, a first connecting part 24212, a second connecting part 24213, a third connecting part 24214, a transverse linkage unit 2422, a moving part 24221, a first movable arm 24221a, a second movable arm 24221b, a third movable arm 24221c, a fixed part 24222, a rotating rod 24223, a third slider 24224, a pivot shaft 24225,

the slide rails 243 are provided with a slide rail 243,

the accommodating case 25, the protruding opening 25a,

the support base 26, the positioning projection 261,

the bottom plate 27 is provided with a plurality of holes,

a charging rail 3, a positive charging rail 3a, a negative charging rail 3b,

the length of the bogie 200 is such that,

track beam 300, switch 301, looped track segment 302.

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 system 100 according to an embodiment of the present invention, which charging system 100 can charge a rail vehicle traveling on a rail beam 300, is described below with reference to fig. 1 to 16.

As shown in fig. 1 to 3, a charging system 100 according to an embodiment of the present invention includes: current collector 1, lift platform 2 and charging rail 3.

Wherein, the current collector 1 can be established on rail vehicle, and lift platform 2 can be including placing board 21 and driving piece 22, and the upper end of driving piece 22 can be linked to each other with placing board 21 in order to drive and place board 21 and reciprocate, and the rail that charges 3 can be established on placing board 21 in order to follow and place board 21 and reciprocate, and the rail that charges 3 can move to and contact with current collector 1.

Specifically, the lifting platform 2 can drive the placing plate 21 to move up and down, thereby driving the current collector 1 to move up and down. When charging system 100 charges, driving piece 22 can drive and place board 21 rebound, places board 21 and can drive charging rail 3 and follow its synchronous motion, and charging rail 3 can move to the position with current collector 1 matched with and constitute the electricity with current collector 1 and be connected, and charging rail 3 can charge rail vehicle. After the charging system 100 finishes charging, the driving member 22 may drive the placing board 21 to move downward, so as to drive the charging rail 3 to be separated from the current collector 1, and the electrical connection circuit between the current collector 1 and the charging rail 3 is disconnected.

Alternatively, the charging system 100 may be disposed in a station, or the charging system 100 may be disposed in a special parking line, and may be selectively disposed according to actual use requirements.

For example, the charging system 100 is provided in a station. When the rail vehicle arrives at a station, if the rail vehicle needs to be charged, the rail vehicle can transmit a signal needing to be charged to the charging control system. When the rail vehicle enters the station and stops stably, the charging control system sends a charging signal to the driving member 22, and the driving member 22 can drive the charging rail 3 to move upwards to contact with the current collector 1. After the battery of the rail vehicle is fully charged, the rail vehicle can transmit a charging end signal to the charging control system, the charging control system can send the charging end signal to the driving member 22, the driving member 22 can drive the charging rail 3 to move downwards to be separated from the current collector 1, and the rail vehicle can normally run. When the rail vehicle arrives at the station, if the rail vehicle does not need to be charged, the rail vehicle can transmit a signal which does not need to be charged to the charging control system. When the rail vehicle enters the station, the driving member 22 may remain stationary and the charging rail 3 does not contact the current collector 1.

From this, through above-mentioned setting, charging system 100 can contact or separate with current collector 1 according to rail vehicle's the demand control that charges to can promote rail vehicle's the autonomy of charging, can prevent that passive phenomenon of charging from appearing in rail vehicle, can prolong battery and current collector 1's life. Moreover, the driving part 22 is adopted to drive the charging rail 3 to contact with the current collector 1, so that the friction and the collision between the charging rail 3 and the current collector 1 can be reduced, the working noise of the railway vehicle during charging can be reduced, and the service life of the current collector 1 can be prolonged.

In a specific example of the present invention, the charging system 100 may be used to charge a rail vehicle, which is provided with a current collector 1 electrically connected to a charging rail 3. The middle of the track beam 300 is provided with a concave portion to form an escape space for people to escape, and the charging system 100 may be disposed below the escape space. When the rail vehicle needs to be charged, the driving member 22 can drive the placing plate 21 to drive the charging rail 3 to move upwards into the escape space. When the charging rail 3 is fully contacted with the current collector 1, the driving member 22 stops driving, and a closed charging loop is formed between the charging rail 3 and the current collector 1 to charge the rail vehicle. After the rail vehicle is charged, the driving member 22 can drive the placing plate 21 to move downwards, the charging rail 3 is separated from the current collector 1, and the charging rail 3 is accommodated below the escape space of the rail system.

Thus, with the above arrangement, the lifting platform 2 can achieve the lifting and lowering of the charging rail 3. When charging system 100 charges, lift platform 2 can drive charging rail 3 and remove to the space of fleing in, after charging system 100 charges and accomplishes, lift platform 2 can drive charging rail 3 and accomodate in the below in the space of fleing, can make the space of fleing keep unobstructed from this, can prevent that charging rail 3 from producing the secondary damage to the personnel of fleing to can promote charging system 100's safety in utilization. Moreover, the lifting of the lifting platform 2 can be selected according to the actual charging requirement, so that the passive charging phenomenon of the rail vehicle can be avoided, and the service life of a battery in the rail vehicle can be prolonged. The lifting platform 2 is automatically controlled without manual participation in charging, so that the use safety of the charging system 100 can be improved.

In the specific example shown in fig. 7-8, the lifting platform 2 is provided with four spaced apart support seats 26, the support seats 26 being made of an insulating SMC material. The bottom of supporting seat 26 links to each other with lift platform 2, and the top of supporting seat 26 is equipped with the location lug 261 that two intervals set up, and every location lug 261 all with supporting seat 26 bolted connection, inject the space of placing of charging rail 3 between two location lugs 261. The number of the charging rails 3 is two, and the two charging rails 3 are arranged in parallel. When the charging rail 3 is assembled with the support bases 26, each charging rail 3 can be placed on two support bases 26, and the positioning projections 261 can be stopped on the peripheral wall of the charging rail 3, thereby achieving a good fixing effect on the charging rail 3. From this, through above-mentioned setting, can make the cooperation structure of rail 3 and lift platform 2 that charges simpler, firm to can also promote charging system 100's the stability of charging.

According to the charging system 100 of the embodiment of the invention, the lifting platform 2 can drive the charging rail 3 to move up and down to contact with or separate from the current collector 1, so that the charging mode of the charging system 100 is simpler, the use safety is high, and the charging efficiency can be improved. Moreover, the lifting platform 2 drives the charging rail 3 to contact with the current collector 1, so that friction and collision between the charging rail 3 and the current collector 1 can be reduced, working noise of the rail vehicle during charging can be reduced, and the service life of the current collector 1 can be prolonged.

In some embodiments of the present invention, the driving member 22 may drive the placing plate 21 to move up and down in the vertical direction, whereby the moving displacement of the placing plate 21 may be shortened, and the charging efficiency may be improved. Of course, the driving member 22 may drive the placing plate 21 to move along a moving track extending obliquely, as long as the charging rail 3 can be driven to contact with the current collector 1.

As shown in fig. 4 to 5, according to some embodiments of the present invention, the elevating platform 2 may further include at least one telescopic member 23, an upper end of the telescopic member 23 may be connected to the placing plate 21, and the telescopic member 23 may be telescopic in a height direction (up and down direction as shown in fig. 4) to support the placing plate 21 when the placing plate 21 is moved. Thereby, the telescopic member 23 can relieve the supporting pressure of the driving member 22, so that the driving member 22 can be normally operated.

In some embodiments of the present invention, the telescopic member 23 may further include a self-locking mechanism (not shown), when the telescopic member 23 extends to the set position, the self-locking mechanism may be triggered to maintain the telescopic member 23 at the current position, and the self-locking mechanism may maintain the telescopic member 23 at the current extension degree, so that the telescopic member 23 may firmly support the placing board 21, and the charging rail 3 may be more firmly matched with the current collector 1.

As shown in fig. 4 to 5, in some embodiments of the present invention, each telescopic member 23 may include at least one connection arm set 231, wherein each connection arm set 231 may include a first pivot seat 2314, a second pivot seat 2315, a first slide seat 2316, a second slide seat 2317, a first connection arm 2311 and a second connection arm 2312, the first pivot seat 2314 may be fixedly disposed at the bottom of the placing plate 21, the first pivot seat 2314 and the second pivot seat 2315 may be spaced apart in the up-down direction, the second slide seat 2317 may be fixedly disposed at the bottom of the placing plate 21, the second slide seat 2317 and the first slide seat 2316 may be spaced apart in the up-down direction, an upper end of the first connection arm 2311 may be pivotably connected to the first pivot seat 2314, a lower end of the first connection arm 2311 may be rotatably and slidably connected to the first slide seat 2316, an upper end of the second connection arm 2312 may be rotatably and slidably connected to the second slide seat 2317, the lower end of the second link arm 2312 may be pivotably connected to the second pivot seat 2315, and the first link arm 2311 and the second link arm 2312 may be pivotably connected therebetween.

Specifically, the first connecting arm 2311 may be pivotally connected to the second connecting arm 2312, when the extension length of the telescopic element 23 is changed, the first connecting arm 2311 and the second connecting arm 2312 may rotate with each other, the upper end of the first connecting arm 2311 may rotate with respect to the first pivoting seat 2314, the lower end of the first connecting arm 2311 may rotate with respect to the first sliding seat 2316, and the first connecting arm 2311 may also slide with respect to the first sliding seat 2316 while being rotationally matched with the first sliding seat 2316. The lower end of the second connecting arm 2312 can rotate relative to the second pivoting seat 2315, the upper end of the second connecting arm 2312 can rotate relative to the second sliding seat 2317, and the second connecting arm 2312 can slide relative to the second sliding seat 2317 while being in rotating fit with the second sliding seat 2317. From this, through the aforesaid setting, can make the structural design of extensible member 23 more ingenious, can satisfy lift platform 2's user demand.

For example, as shown in fig. 5, the telescopic member 23 may include a pair of link arms 231, the link arms 231 include first link arms 2311 and second link arms 2312 arranged in a crossing manner, and the first link arms 2311 and the second link arms 2312 are pivotally connected to each other by a rotating shaft 2313. When the charging system 100 is charged, the elevating platform 2 moves upward, and the extension length of the expansion piece 23 increases. The first connecting arm 2311 and the second connecting arm 2312 rotate relative to each other so that the included angle alpha between the first connecting arm 2311 and the second connecting arm 2312 is reduced, the upper end of the first connecting arm 2311 can rotate relative to the first pivoting seat 2314, the lower end of the first connecting arm 2311 can rotate relative to the first sliding seat 2316, and the first connecting arm 2311 can slide forwards relative to the first sliding seat 2316 while being in rotating fit with the first sliding seat 2316. The lower end of the second connecting arm 2312 can rotate relative to the second pivoting seat 2315, the upper end of the second connecting arm 2312 can rotate relative to the second sliding seat 2317, and the second connecting arm 2312 can slide forwards relative to the second sliding seat 2317 while being in rotating fit with the second sliding seat 2317. The sliding distance of the first link arm 2311 with respect to the first sliding seat 2316 is the same as the sliding distance of the second link arm 2312 with respect to the second sliding seat 2317.

After the charging system 100 finishes charging, the lifting platform 2 moves downward, the charging rail 3 is separated from the current collector 1, and the extension length of the telescopic member 23 is reduced. The first connecting arm 2311 and the second connecting arm 2312 rotate relative to each other to increase an included angle α between the first connecting arm 2311 and the second connecting arm 2312, the upper end of the first connecting arm 2311 can rotate relative to the first pivoting seat 2314, the lower end of the first connecting arm 2311 can rotate relative to the first sliding seat 2316, and the first connecting arm 2311 can rotate and match with the first sliding seat 2316 and can slide backwards relative to the first sliding seat 2316. The lower end of the second connecting arm 2312 can rotate relative to the second pivoting seat 2315, the upper end of the second connecting arm 2312 can rotate relative to the second sliding seat 2317, and the second connecting arm 2312 can slide backwards relative to the second sliding seat 2317 while being in rotating fit with the second sliding seat 2317. The sliding distance of the first link arm 2311 with respect to the first sliding seat 2316 is the same as the sliding distance of the second link arm 2312 with respect to the second sliding seat 2317.

In some embodiments of the present invention, the first sliding seat 2316 may be provided with a first sliding slot 2316a, the lower end of the first connecting arm 2311 may be provided with a first sliding block 2311a, the first sliding block 2311a may be rotatably and slidably engaged with the first sliding slot 2316a, the second sliding seat 2317 may be provided with a second sliding slot 2317a, the upper end of the second connecting arm 2312 may be provided with a second sliding block 2312a, and the second sliding block 2312a may be rotatably and slidably engaged with the second sliding slot 2317a, so that the above arrangement may make the engaging structure between the first connecting arm 2311 and the first sliding seat 2316, and between the second connecting arm 2312 and the second sliding seat 2317 simpler, and may further make the operation of the telescopic element 23 smoother.

Alternatively, the lower end of the first link arm 2311 may be rotatably connected to the first slider 2311a, the first slider 2311a may be slidably engaged with the first sliding groove 2316a, and when the extension length of the telescopic member 23 is changed, the first link arm 2311 may apply a pushing force to the first slider 2311a to slide the first slider 2311a back and forth in the first sliding groove 2316 a.

Alternatively, the upper end of the second connecting arm 2312 may also be rotatably connected to the second slider 2312a, the second slider 2312a may be slidably engaged with the second sliding slot 2317a, and when the extension length of the telescopic member 23 is changed, the second connecting arm 2312 may apply a pushing force to the second slider 2312a to slide the second slider 2312a back and forth in the second sliding slot 2317 a.

Optionally, the telescopic member 23 may also include a plurality of connecting arm sets 231, the connecting arm sets 231 may be sequentially connected in the vertical direction, and may be selectively set according to the lifting displacement of the lifting platform 2, which is not specifically limited in the present invention. It will be appreciated that the design of the telescopic elements 23 is not exclusive, as long as the raising and lowering of the lifting platform 2 can be achieved. For example, the telescopic member 23 may be a spring.

As shown in fig. 4, in some embodiments of the present invention, there may be two telescopic members 23, two telescopic members 23 are distributed on two sides of the driving member 22, and the two telescopic members 23 may simultaneously function to support the placing plate 21, thereby making the structure of the lifting platform 2 more stable. Of course, it can be understood that a plurality of telescopic members 23 may be disposed on the lifting platform 2, and the arrangement may be selected according to the structural requirements of the lifting platform 2.

Optionally, the lifting platform 2 may further comprise a base plate 27, and the lower ends of the driving member 22 and the telescopic member 23 may be connected to the base plate 27. A first sliding seat 2316 and a second pivoting seat 2315 may be provided on the placing plate 21. Further, the first sliding seat 2316 may be provided as an integral part with the placing plate 21, the second pivoting seat 2315 may also be provided as an integral part with the placing plate 21, and the first sliding seat 2316 and the second pivoting seat 2315 may also be provided as an integral part with the placing plate 21, whereby the overall structure of the lifting platform 2 may be made simpler and the assembling efficiency may be improved by the above-described arrangement.

According to some embodiments of the present invention, the driving member 22 may be a hydraulic cylinder, and the hydraulic cylinder may convert hydraulic energy into mechanical energy and may reciprocate in a linear direction, so that the driving member 22 may operate more stably, and thus the operation stability of the charging system 100 may be ensured. Alternatively, the drive member 22 may be a linear motor.

As shown in fig. 7-9, according to some embodiments of the present invention, the lifting platform 2 may further comprise: the opening and closing device 24, the opening and closing device 24 can have an open state and a closed state, when the opening and closing device 24 is in the open state, the opening and closing device 24 can avoid the moving path of the charging rail 3, when the opening and closing device 24 is in the closed state, the opening and closing device 24 can be located at a position blocking the rising of the charging rail 3, the opening and closing device 24 can protect the charging rail 3, and the use safety of the charging system 100 can be improved.

Specifically, when the charging system 100 is charging, the opening/closing device 24 is in an open state, and the driving member 22 can drive the charging rail 3 to ascend to the charging position to cooperate with the current collector 1. After the charging system 100 finishes charging, the driving member 22 may drive the charging rail 3 to move downward, and then the opening/closing device 24 may be adjusted to the closed state, and the opening/closing device 24 may protect the charging rail 3, may prevent sundries from falling onto the charging rail 3, and may also prevent a safety accident caused by a rail protection worker touching the charging rail 3.

For example, a receiving groove for receiving the lifting platform 2 and the charging rail 3 may be provided in the rail beam 300, an opening may be provided above the receiving groove, and the opening may be opened or closed by the opening and closing device 24. When the charging system 100 is charging, the opening and closing device 24 opens the opening, and the driving member 22 can drive the charging rail 3 to extend out of the accommodating groove. After the charging system 100 completes charging, the driving member 22 can drive the charging rail 3 to be received in the receiving slot, and then the opening and closing device 24 can close the opening.

As shown in fig. 7, in some embodiments of the present invention, the opening and closing device 24 may include an opening and closing plate 241 and a linkage 242, the linkage 242 may be connected to the opening and closing plate 241 and the placing plate 21, and when the placing plate 21 moves up and down, the placing plate 21 may drive the opening and closing plate 241 to move through the linkage 242, so that the opening and closing device 24 may be switched between an opened state and a closed state. The opening/closing plate 241 can escape from the movement path of the charging rail 3 when the opening/closing device 24 is in the open state, and the opening/closing plate 241 can block the rising of the charging rail 3 when the opening/closing device 24 is in the closed state, whereby the design form of the opening/closing device 24 can be made simpler by the above arrangement.

Alternatively, the opening and closing device 24 may include one opening and closing plate 241, and the linkage 242 may drive the opening and closing plate 241 to move in different directions. When the opening/closing device 24 is switched to the open state, the interlocking mechanism 242 may drive the opening/closing plate 241 to move forward, and the opening/closing plate 241 may escape from the movement path of the charging rail 3. When the opening/closing device 24 is switched to the closed state, the interlocking mechanism 242 can drive the opening/closing plate 241 to move in the reverse direction, and the opening/closing plate 241 is located directly above the charging rail 3.

Alternatively, the opening and closing device 24 may include two opening and closing plates 241. When the opening and closing device 24 is switched to the open state, the linkage 242 may drive the two opening and closing plates 241 to move away from each other to define the ascending space of the charging rail 3. When the opening/closing device 24 is switched to the closed state, the interlocking mechanism 242 may drive the two opening/closing plates 241 to move in a direction to approach each other, and the two opening/closing plates 241 are located directly above the charging rail 3.

As shown in fig. 10 to 11, in some embodiments of the present invention, the linkage mechanism 242 may include a vertical linkage unit 2421 and a lateral linkage unit 2422, one end of the vertical linkage unit 2421 may be connected to the placing board 21 to be driven to move by the placing board 21, the other end of the vertical linkage unit 2421 may be connected to the lateral linkage unit 2422 to drive the lateral linkage unit 2422 to move, and the lateral linkage unit 2422 may be connected to the opening and closing board 241 and move the opening and closing board 241.

Specifically, when the charging system 100 performs charging, the driving element 22 may drive the placing board 21 to move upward, the placing board 21 may drive the vertical linkage unit 2421 to move while the placing board 21 moves, and the vertical linkage unit 2421 may drive the lateral linkage unit 2422 to move, so that the lateral linkage unit 2422 may drive the opening and closing board 241 to move forward to avoid the movement path of the charging rail 3. After the charging system 100 completes charging, the driving element 22 may drive the placing board 21 to move downward, the placing board 21 may drive the vertical linkage unit 2421 to move while moving, and the vertical linkage unit 2421 may drive the horizontal linkage unit 2422 to move, so that the horizontal linkage unit 2422 may drive the opening and closing board 241 to move in the opposite direction to avoid the moving path of the charging rail 3. Thus, with the above arrangement, the placing plate 21, the vertical linkage unit 2421, the horizontal linkage unit 2422 and the opening and closing plate 241 can be linked with each other, so that not only can the operation of the linkage mechanism 242 be smoother, but also the working efficiency of the opening and closing device 24 can be improved.

The design of the link mechanism 242 is not limited to this. For example, in other embodiments of the present invention, the linkage 242 may drive the opening and closing plate 241 to move longitudinally to avoid the charging rail 3, and the linkage 242 may also move in other directions in the space as long as it can avoid the charging rail 3 and return to the closed state, and the movement form of the opening and closing plate 241 is not particularly limited in the present invention.

As shown in fig. 7 to 8, in some embodiments of the present invention, the vertical linkage unit 2421 may include: a mounting base 24211 and a first link 24212, the mounting base 24211 may be provided on the placing plate 21, one end of the first link 24212 may be rotatably coupled to the mounting base 24211, and the other end of the first link 24212 may be rotatably coupled to the traverse linkage unit 2422. Specifically, when the placing board 21 moves upward, the interval between the vertical linkage unit 2421 and the lateral linkage unit 2422 decreases, the first link 24212 may rotate counterclockwise, and the upper end of the first link 24212 may apply a tensile force to the lateral linkage unit 2422, whereby the opening and closing board 241 may be driven to escape from the moving path of the charging rail 3. When the placing board 21 is moved downward, the interval between the vertical linkage unit 2421 and the lateral linkage unit 2422 increases, the first link 24212 may be rotated clockwise, and the upper end of the first link 24212 may apply a pushing force to the lateral linkage unit 2422, whereby the opening and closing board 241 may be driven to block the ascent of the charging rail 3. Therefore, through the arrangement, the structural design form and the operation mode of the vertical linkage unit 2421 can be simpler, and the working efficiency can be improved.

As shown in fig. 7 to 8, in some embodiments of the present invention, the vertical linkage unit 2421 may include: a mounting base 24211, a first connector 24212, and a second connector 24213, the mounting base 24211 may be provided on the placing plate 21, one end of the first connector 24212 may be rotatably coupled to the mounting base 24211, the other end of the first connector 24212 may be coupled to the traverse link unit 2422, one end of the second connector 24213 may be rotatably coupled to the mounting base 24211, and the other end of the second connector 24213 may be coupled to the traverse link unit 2422. Specifically, when the placing board 21 moves up and down, the first link 24212 and the second link 24213 may rotate with respect to the mounting base 24211, and the first link 24212 and/or the second link 24213 may apply a force to the traverse linkage unit 2422 when rotating, and the force may cause the traverse linkage unit 2422 to be interlocked with the opening and closing board 241, so that the opening and closing device 24 may be flexibly switched between the open state and the closed state. Therefore, through the arrangement, the structural design of the vertical linkage unit 2421 is simpler, and the operation is more convenient.

As shown in fig. 7-8 and 10, in some embodiments of the present invention, the vertical linkage unit 2421 may further include a third connector 24214, a first end of the third connector 24214 may be rotatably disposed on the mounting base 24211, and the first connector 24212 and the second connector 24213 may be respectively rotatably connected to the third connector 24214, so that the overall structure of the vertical linkage unit 2421 may be more harmonious, and the operation of the opening and closing device 24 may be smoother. For example, the lower end of the third link 24214 may be rotatably connected to the mounting base 24211, the upper end of the third link 24214 and the lower ends of the first and

second links

24212 and 24213 may be connected by a rotation pin, and the second and

third links

24213 and 24214 may be rotated by the rotation pin.

As shown in fig. 8-9, in some embodiments of the present invention, the lateral linkage unit 2422 may include: a moving part 24221, a fixing part 24222 and two rotating levers 24223, the moving part 24221 may be connected to the vertical linkage unit 2421 to be driven by the vertical linkage unit 2421 to move, the fixing part 24222 may be in sliding fit with the moving part 24221, the fixing part 24222 is stationary with respect to the track beam 300, the two rotating levers 24223 may be disposed to intersect and pivotally connected by a pivoting shaft 24225, both ends of each rotating lever 24223 may be respectively connected to two opening and closing plates 241, one end of each rotating lever 24223 may be rotatably connected to one of the opening and closing plates 241, the other end of each rotating lever 24223 may be rotatably and slidably connected to the other opening and closing plate 241, and the moving part 24221 may be connected to the two rotating levers 24223 to change an included angle of the two rotating levers 24223.

Specifically, when the opening and closing device 24 needs to be adjusted to the open state or the closed state, the vertical linkage unit 2421 may apply force to the moving member 24221, and the moving member 24221 may drive the two opening and closing plates 241 to move. The fixing part 24222 can limit the moving part 24221, and can ensure that the moving part 24221 can move back and forth along a set track. For example, the opening and closing plate 241 is two and connected to the lateral linkage unit 2422. When the placing plate 21 is moved upward, the vertical linkage unit 2421 may apply a pushing force to the moving member 24221, and the moving member 24221 may drive the two opening and closing plates 241 to move toward a direction away from each other to define an ascending space of the charging rail 3. When the placing board 21 is moved downward, the vertical linkage unit 2421 may apply a pulling force to the moving member 24221, and the moving member 24221 may drive the two opening and closing boards 241 to move toward each other to be switched to the closed state. Therefore, through the arrangement, the structural design of the transverse linkage unit 2422 can be simpler, and the operation is more convenient.

In one specific example of the present invention, the moving member 24221 may include a first movable arm 24221a, a second movable arm 24221b, and a third movable arm 24221c, the first movable arm 24221a may extend in a length direction (a front-rear direction as shown in fig. 11) of the opening and closing plate 241, one end of the first movable arm 24221a may be connected to an upper end of the first connection member 24212, and the other end of the first movable arm 24221a may be rotatably connected to first ends of the second and third

movable arms

24221b and 24221 c. The second end of the second movable arm 24221b is pivotally connected to one of the opening and closing plates 241 and the second end of the third movable arm 24221c is pivotally connected to the other opening and closing plate 241. When the placing plate 21 is moved upward, the angle between the first linkage 24212 and the second linkage 24213 increases, the upper end of the first linkage 24212 may pull the first movable arm 24221a to move forward, and the first movable arm 24221a may move while applying a tensile force to the second movable arm 24221b and the third movable arm 24221 c. The second and third

movable arms

24221b and 24221c can rotate relative to the first movable arm 24221a, the included angle between the second and third

movable arms

24221b and 24221c is reduced, and the second and third

movable arms

24221b and 24221c can drive the two opening and closing plates 241 to move towards the directions away from each other so as to avoid the running track of the charging rail 3. When the placing plate 21 moves downward, the angle between the first link 24212 and the second link 24213 decreases, the upper end of the first link 24212 can push the first movable arm 24221a to move backward, the first movable arm 24221a can apply a pushing force to the second movable arm 24221b and the third movable arm 24221c while moving, the second movable arm 24221b and the third movable arm 24221c rotate relative to the first movable arm 24221a, the angle between the second movable arm 24221b and the third movable arm 24221c increases, and the second movable arm 24221b and the third movable arm 24221c can drive the two opening and closing plates 241 to move to the directions close to each other to be right above the charging rail 3.

In another specific example of the present invention, the opening and closing device 24 includes a vertical linkage unit 2421 and a lateral linkage unit 2422. The vertical linkage unit 2421 may include: a mounting base 24211, a first connector 24212, a second connector 24213, and a third connector 24214, wherein the mounting base 24211 may be provided on the placing plate 21, a first end of the third connector 24214 may be rotatably provided on the mounting base 24211, and the first connector 24212 and the second connector 24213 may be rotatably connected to a second end of the third connector 24214, respectively. The lateral linkage unit 2422 includes: a moving part 24221, a fixing part 24222 and two rotating parts, wherein the upper end of the second connecting part 24213 is connected with the fixing part 24222, the upper end of the first connecting part 24212 is pivotally connected with the moving part 24221, and the fixing part 24222 is kept relatively stationary with the placing plate 21.

The moving member 24221 may include a first movable arm 24221a, a second movable arm 24221b, and a third movable arm 24221c, the first movable arm 24221a extending in a length direction (front-rear direction as shown in fig. 11) of the opening and closing plate 241, one end of the first movable arm 24221a being connected to an upper end of the first connection member 24212, and the other end of the first movable arm 24221a being rotatably connected to first ends of the second and third

movable arms

24221b and 24221 c. The two turning levers 24223 are arranged to intersect and the two turning levers 24223 are fitted rotatably. One end of each of the turning levers 24223 may be rotatably connected to one of the opening and closing plates 241, the other end of each of the turning levers 24223 may be rotatable and slidable with respect to the other opening and closing plate 241, and the moving member 24221 may be connected to both of the turning levers 24223 to change the angle β between the two turning levers 24223.

When the placing plate 21 is moved upward, the angle between the first linkage 24212 and the second linkage 24213 increases, the upper end of the first linkage 24212 can pull the first movable arm 24221a forward, the first movable arm 24221a can move while applying a pulling force to the second movable arm 24221b and the third movable arm 24221c, the second movable arm 24221b and the third movable arm 24221c rotate relative to the first movable arm 24221a, and the angle between the second movable arm 24221b and the third movable arm 24221c decreases. Under the pulling force of the second and third

movable arms

24221b and 24221c, the two rotating levers 24223 relatively rotate and the angle β between the two rotating levers 24223 increases, whereby the two opening and closing plates 241 may be pulled to move away from each other, so that an ascending space of the charging rail 3 may be defined. When the placing plate 21 is moved downward, the angle between the first linkage 24212 and the second linkage 24213 decreases, the upper end of the first linkage 24212 may push the first movable arm 24221a to move backward, and the first movable arm 24221a may apply a pushing force to the second movable arm 24221b and the third movable arm 24221c while moving. Second and third

movable arms

24221b and 24221c pivot relative to first movable arm 24221a and the angle between second and third

movable arms

24221b and 24221c decreases. Under the thrust force of the second and third

movable arms

24221b and 24221c, the two rotating levers 24223 relatively rotate and the included angle β between the two rotating levers 24223 decreases, so that the two opening and closing plates 241 may be pulled to move away from and close to each other, and the two opening and closing plates 241 may be located right above the charging rail 3.

Alternatively, there may be two opening and closing plates 241, each opening and closing plate 241 is provided with a third sliding slot 2411 extending in the length direction (the front-back direction shown in fig. 11), and each third sliding slot 2411 may be provided therein with a third slide 24224 which is spaced apart from the two third sliding slots 2411 and is in sliding fit with the third sliding slots 2411. The two rotating levers 24223 are disposed to intersect each other, and both ends of each of the rotating levers 24223 are rotatably connected to one third slide 24224, respectively. One of the third sliders 24224 is positioned in the third sliding groove 2411 of the left opening and closing plate 241, and the other third slider 24224 is positioned in the third sliding groove 2411 of the right opening and closing plate 241. When the moving member 24221 applies force to the two rotating rods 24223, the two rotating rods 24223 can rotate relative to each other, so as to drive the corresponding third slide block 24224 to slide in the third sliding slot 2411, the pivot shafts 24225 can be stationary relative to the track beam 300, so that the third slide block 24224 can also rotate relative to the rotating rods 24223 while sliding, and the rotating rods 24223 can apply pulling force or pushing force to the opening and closing plate 241, so as to switch the opening and closing plate 241 between the open state and the closed state.

As shown in fig. 12, in some embodiments of the present invention, there may be two opening and closing plates 241, at least one of the opening and closing plates 241 may be provided with a third sliding groove 2411 extending in a length direction thereof (i.e., a front-rear direction as shown in fig. 12), a third sliding block 24224 slidably engaged with the third sliding groove 2411 may be provided in the third sliding groove 2411, there may be two third sliding blocks 24224, one end of each of the rotating rods 24223 may be rotatably connected to the third sliding block 24224, and the other end of each of the rotating rods 24223 may be rotatably connected to the corresponding opening and closing plate 241, so that the design form of the opening and closing device 24 may be simpler and the assembly thereof may be more convenient.

For example, as shown in fig. 12, two opening and closing plates 241 may be arranged in the left-right direction, each opening and closing plate 241 is provided with a third sliding slot 2411 extending in the front-back direction, and each third sliding slot 2411 is provided with a third slide 24224 slidably engaged with the third sliding slot 2411. The two turning levers 24223 are disposed to intersect each other, one end of one turning lever 24223 is rotatably connected to the left opening/closing plate 241, the other end is rotatably connected to the third slide block 24224 in the third slide groove 2411 of the right opening/closing plate 241, one end of the other turning lever 24223 is rotatably connected to the right opening/closing plate 241, and the other end is rotatably connected to the third slide block 24224 in the third slide groove 2411 of the left opening/closing plate 241.

The design of the opening/closing device 24 is not limited to this. For example, the opening/closing device 24 may be driven by a motor or a cylinder to move the opening/closing plate 241. For example, the opening and closing device 24 may include two linear motors, each of which is connected to a corresponding opening and closing plate 241 to drive the opening and closing plate 241 to move. When the charging system 100 requires charging, the two linear motors may drive the corresponding opening and closing plates 241 to move in a direction away from each other. When the charging of the charging system 100 is completed, the two linear motors may drive the corresponding opening and closing plates 241 to move toward each other.

In some embodiments of the present invention, the fixing part 24222 may have a sliding space, and the moving part 24221 may be inserted into the sliding space and movably engaged with the fixing part 24222, so that the engaging structure between the fixing part 24222 and the moving part 24221 may be more compact, and the assembly space occupied by the opening and closing device 24 may be reduced. It is understood, of course, that the manner of assembly between movable part 24221 and fixed part 24222 is not limited thereto. For example, a sliding groove may be provided on one side wall of the fixing part 24222, and a portion of the moving part 24221 may protrude into the sliding groove and may slide relative to the sliding groove. For another example, the moving part 24221 may not be connected to the fixing part 24222, and the moving part 24221 can move relative to the fixing part 24222.

As shown in fig. 8 to 9, in some embodiments of the present invention, the opening and closing device 24 may further include a slide rail 243 extending in a transverse direction (a left-right direction as shown in fig. 8), and the opening and closing plate 241 may be slidably engaged with the slide rail 243, so that the movement of the opening and closing plate 241 may be smoother. Alternatively, a first rolling body may be provided on the opening/closing plate 241, and a plurality of second rolling bodies provided at intervals to be in rolling engagement with the first rolling body may be provided on the slide rail 243, whereby, when the opening/closing plate 241 moves, the first rolling body may be in rolling engagement with the plurality of second rolling bodies, so that the operation resistance of the opening/closing plate 241 may be reduced, and the workload of the link mechanism 242 may be reduced.

As shown in fig. 6, according to some embodiments of the present invention, the lifting platform 2 may further include an accommodating box 25, an accommodating space may be disposed in the accommodating box 25, the driving member 22 and the charging rail 3 may be disposed in the accommodating space, an extending opening 25a may be disposed at a top of the accommodating space, the charging rail 3 is adapted to extend out of the accommodating box 25 through the extending opening 25a, and the accommodating box 25 may seal the charging rail 3, so as to improve the safety of the charging system 100.

For example, the accommodating case 25 may be provided below the escape passage of the rail beam 300. When the rail vehicle is charged, the driving member 22 may drive the charging rail 3 to move upward and extend out of the accommodating box 25 through the extending opening 25a, and the charging rail 3 may contact the current collector 1 in the escape route. After the rail vehicle is charged, the driving member 22 can drive the charging rail 3 to be accommodated in the accommodating box 25, so that the escape passage can be kept smooth, and the charging rail 3 can be prevented from causing secondary damage to the escape personnel during escape.

Of course, in other embodiments of the invention, an escape space may be provided in the rail beam 300, the accommodating box 25 may be provided below the escape space, and the top of the escape space may be opened and the protrusion opening 25a may be formed. Thus, with the above arrangement, the overall structure of the charging system 100 can be made simpler.

Alternatively, the opening and closing device 24 may be provided in the accommodating case 25, and the driving member 22, the charging rail 3, and the opening and closing device 24 may be provided in the accommodating case 25. The inner peripheral wall of the accommodating box 25 may be provided with a slide rail 243, and the opening and closing plate 241 may be slidably engaged with the slide rail 243. The linkage 242 may drive the opening and closing plate 241 to move, whereby the opening or closing of the projection port 25a may be achieved. For example, when the charging system 100 is charging, the linkage 242 may drive the opening and closing plate 241 to move forward, the opening and closing plate 241 may open the protruding opening 25a, the driving element 22 may drive the charging rail 3 to move upward and protrude out of the accommodating box 25 through the protruding opening 25a, and the charging rail 3 may form a charging loop with the current collector 1. When the charging system 100 is charged, the driving member 22 may drive the charging rail 3 to move downward and pass through the protruding opening 25a into the accommodating box 25, and the linkage mechanism 242 may drive the opening and closing plate 241 to move reversely so that the opening and closing plate 241 closes the protruding opening 25 a. Therefore, by the arrangement, the sealing performance of the lifting platform 2 can be improved, and safety accidents caused by the fact that sundries enter the accommodating box 25 can be prevented, so that the use safety of the charging system 100 can be improved.

As shown in fig. 1-2, according to some embodiments of the present invention, the current collector 1 may include a support frame 11, a connection shaft 12, an elastic member 13, a positive current receiving plate 151, and a negative current receiving plate 152. The support frame 11 is adapted to be fixed on a rail vehicle, the connecting shaft 12 can be disposed on the support frame 11, the connecting shaft 12 can move up and down relative to the support frame 11, the elastic member 13 can be respectively matched with the support frame 11 and the connecting shaft 12, and the positive current receiving plate 151 and the negative current receiving plate 152 can be disposed at the lower end of the connecting shaft 12 at an interval.

Specifically, when the current-receiving plate 15 is impacted in the up-down direction, the connecting shaft 12 can drive the positive current-receiving plate 151 and the negative current-receiving plate 152 to move in the up-down direction, and the elastic member 13 is extruded to be elastically deformed, so that the impact received by the current-receiving plate 15 can be converted into the elastic potential energy of the elastic member 13, the impact received by the current-receiving plate 15 can be buffered and absorbed, the impact noise of the current-receiving plate 15 is reduced, the current-receiving plate 15 is protected, and the service life of the current-receiving plate 15 is prolonged. Moreover, under the action of the elastic restoring force of the elastic element 13, the elastic element 13 can drive the connecting shaft 12 to drive the current receiving plate 15 to move downwards, so that the current receiving plate 15 and the charging rail 3 can be more stably and reliably matched, and the running stability and reliability of the charging system 100 are further improved.

As shown in fig. 13-14, in some embodiments of the present invention, the connecting shaft 12 may include a connecting post 121 and an outer cylinder 122. The outer cylinder 122 may be sleeved on the connection column 121, as shown in fig. 14, and the outer cylinder 122 is sleeved on the connection column 121 from bottom to top. The outer cylinder 122 is movable up and down with respect to the connection column 121. Therefore, when the outer cylinder 122 moves up and down relative to the connecting column 121, the flow receiving plate 15 can be driven to move up and down, so as to buffer and absorb the impact received by the flow receiving plate 15.

As shown in fig. 14, the elastic member 13 may be sleeved on the connection post 121, one end of the elastic member 13 abuts against the support frame 11, and the other end of the elastic member 13 abuts against the outer cylinder 122. It should be noted that, when the current-receiving plate 15 contacts the charging rail 3, the charging rail 3 may generate an upward force on the current-receiving plate 15 to push the current-receiving plate 15 to move upward. In the process of upward movement of the current-receiving plate 15, the outer cylinder 122 is pushed to press the elastic member 13 to generate elastic deformation, so that the impact force received by the current-receiving plate 15 can be converted into elastic potential energy of the elastic member 13. Moreover, under the elastic restoring force of the elastic member 13, the elastic member 13 can push the current-receiving plate 15 toward the charging rail 3, so that the reliability of the matching of the current-receiving plate 15 and the charging rail 3 can be improved.

As shown in fig. 14, according to some embodiments of the present invention, the connecting column 121 may penetrate through the upper end surface of the supporting frame 11, and the connecting column 121 may be provided with a stopper 1211 abutting against the upper end surface of the supporting frame 11. The stopping portion 1211 can be a bolt, and the upper end of the connecting column 121 can be threaded with the bolt after penetrating through the upper end surface of the supporting frame 11. Therefore, the stop portion 1211 is disposed to prevent the connecting column 121 from being separated from the supporting frame 11.

As shown in fig. 13-14, in some embodiments of the present invention, the support frame 11 may include: a fixed plate 111, an outer sleeve 112, and a plurality of extension arms 113. The fixing plate 111 may be fixed to a rail vehicle, and the outer tube 112 is disposed below the fixing plate 111 and spaced apart from the fixing plate 111. Both ends of each extension arm 113 may be connected to the fixing plate 111 and the outer sleeve 112, respectively, an upper end of the connecting shaft 12 may be connected to the fixing plate 111, and a lower end of the connecting shaft 12 may pass through the outer sleeve 112 to be connected to the positive current receiving plate 151 and the negative current receiving plate 152. This can improve the structural stability of the current collector 1.

Specifically, the fixing plate 111 may be fixed to the bogie 200 of the railway vehicle by a bolt connection or a screw connection, the extension arm 113 may play a role in fixing and connecting the outer sleeve 112, the outer sleeve 112 is sleeved on the connecting shaft 12, the outer sleeve 112 may play a role in guiding the connecting shaft 12, and the connecting shaft 12 may be prevented from swinging left and right while moving upward, so that the current receiving plate 15 and the charging rail 3 may be tightly attached together. Alternatively, the fixing plate 111, the plurality of extension arms 113 and the outer sleeve 112 may be provided as an integrated part, so that not only the assembly efficiency of the current collector 1 may be improved, but also the overall structure of the current collector 1 may be more firm.

According to some embodiments of the present invention, one of the connecting shaft 12 and the outer sleeve 112 is provided with a rotation stopping block 1212, and the other is provided with a rotation stopping groove 1121 adapted to the rotation stopping block 1212. As shown in fig. 14, a rotation stop block 1212 may be provided on the connection post 121, and a rotation stop groove 1121 may be provided on the outer sleeve 112. The rotation stopping block 1212 may be provided on the outer circumferential wall of the connection post 121, and the rotation stopping block 1212 extends in the up-down direction. Accordingly, the rotation preventing groove 1121 is provided on the inner peripheral wall of the outer sleeve 112, and the rotation preventing groove 1121 extends in the up-down direction. The rotation preventing block 1212 is movable in the rotation preventing groove 1121 in the up-down direction. Therefore, the connecting column 121 can be prevented from rotating relative to the outer sleeve 112 in the up-and-down moving process, and the matching firmness and reliability of the current receiving plate 15 and the charging rail 3 can be improved.

The rotation preventing groove 1121 may penetrate the outer tube 112 in the vertical direction. The rotation stopping groove 1121 may also be formed to penetrate the outer sleeve 112 downward, and the upper end of the rotation stopping groove 1121 may be closed. Thereby, the up and down movement displacement of the connection post 121 can be limited by the rotation stopping grooves 1121. For example, when the connection post 121 moves upward to a predetermined distance, the rotation stop block 1212 abuts against the upper end wall of the rotation stop groove 1121 to limit further movement of the connection post 121. It is understood that the rotation stopping block 1212 may also be provided on the inner peripheral wall of the outer sleeve 112, and a rotation stopping groove 1121 adapted to the rotation stopping block 1212 is provided on the outer peripheral wall of the connecting shaft 12.

In some embodiments of the present invention, the support frame 11 may further include an inner sleeve (not shown) located between the outer sleeve 112 and the connecting shaft 12. It will be appreciated that the firmness and reliability of the fit between the outer sleeve 112 and the connecting shaft 12 may be improved by providing an inner sleeve between the outer sleeve 112 and the connecting shaft 12.

Alternatively, the inner sleeve may be a flexible member. The inner sleeve is a flexible member, which can improve the firmness and reliability of the fit between the outer sleeve 112 and the connecting shaft 12. Moreover, the inner sleeve of the flexible member can buffer and absorb the impact between the connecting shaft 12 and the outer sleeve, so as to effectively avoid the collision damage between the connecting shaft 12 and the outer sleeve 112, and the inner sleeve can also reduce the friction between the connecting shaft 12 and the outer sleeve 112, thereby prolonging the service life of the support frame 11.

As shown in fig. 13, in some embodiments of the invention, at least one of the plurality of extension arms 113 is provided with a first weight-reducing slot 1131. That is, the first weight-reducing groove 1131 may be provided in one of the extension arms 113, or the first weight-reducing groove 1131 may be provided in each of the extension arms 113 at the same time, and the first weight-reducing groove 1131 may penetrate through the extension arm 113 in the thickness direction of the extension arm 113. Therefore, the material consumption of the support frame 11 can be saved, and the production cost of the support frame 11 can be reduced. Also, the overall weight of the support bracket 11 can be reduced.

As shown in fig. 13-14, in some embodiments of the present invention, the current collector 1 may further include: the fixing arm 14 may have an upper end of the fixing arm 14 connected to the connecting shaft 12, a lower end of the fixing arm 14 may extend downward to form a first sub-arm 141 and a second sub-arm 142 that are spaced apart from each other, the positive current receiving plate 151 may be disposed at a lower end of the first sub-arm 141, and the negative current receiving plate 152 may be disposed at a lower end of the second sub-arm 142. Thereby, the positive current receiving plate 151 and the negative current receiving plate 152 are fixedly connected.

As shown in fig. 13 to 14, the first sub-arm 141 and the second sub-arm 142 may be arc-shaped arms, so that the stress of the first sub-arm 141 and the second sub-arm 142 may be uniformly distributed, and the structural strength of the fixing arm 14 may be improved.

According to some embodiments of the present invention, at least one of the first sub-arm 141 and the second sub-arm 142 is provided with a second lightening groove 144. That is, the second weight-reducing groove 144 may be provided in the first sub-arm 141, the second weight-reducing groove 144 may be provided in the second sub-arm 142, or the second weight-reducing groove 144 may be provided in both the first sub-arm 141 and the second sub-arm 142.

As shown in fig. 13, each of the first sub-arm 141 and the second sub-arm 142 is provided with a second lightening groove 144, and the second lightening groove 144 penetrates the corresponding first sub-arm 141 and the corresponding second sub-arm 142 in the thickness direction. By providing the second weight-reduction grooves 144 on the first sub-arm 141 and the second sub-arm 142, the material usage of the current collector 1 can be saved, and the production cost of the current collector 1 can be reduced. Also, the overall weight of the current collector 1 can be reduced.

As shown in fig. 13-14, in some embodiments of the present invention, a flexible buffer 143 is disposed between the positive current receiving plate 151 and the first sub-arm 141, and between the negative current receiving plate 152 and the second sub-arm 142. It should be noted that, when the current collector 1 is impacted in the up-down direction, the flexible buffer 143 can buffer and absorb the impact force between the positive current-receiving plate 151 and the first sub-arm 141, and between the negative current-receiving plate 152 and the second sub-arm 142, so as to effectively protect the current collector 1 and prolong the service life of the current collector 1.

As shown in fig. 14, according to some embodiments of the present invention, the guide portions 153 are disposed at both ends of the positive current receiving plate 151 and the negative current receiving plate 152, and the thickness of the guide portions 153 gradually increases toward the middle along both ends of the positive current receiving plate 151 or the negative current receiving plate 152. As shown in fig. 14, the current-receiving plate 15 is configured in a shape thick in the middle and thin at both ends. Thus, the guide portion 153 may function as a guide when the current receiving plate 15 is in contact with the charging rail 3, thereby facilitating contact engagement between the current receiving plate 15 and the corresponding guide rail.

As shown in fig. 15, according to some embodiments of the present invention, there may be two current collectors 1, two charging rails 3 may be provided at intervals, and the two charging rails 3 are divided into a positive charging rail 3a and a negative charging rail 3 b. The charging system 100 is configured such that when switching between forward driving and u-turn driving of the rail vehicle, the positive charging rail 3a is in switching contact with the positive current receiving plates 151 of the two current collectors 1, and the negative charging rail 3b is adapted to be in switching contact with the negative current receiving plates 152 of the two current collectors 1.

It should be noted that, as shown in fig. 16, due to the influence of the terrain or other factors, the track beam 300 needs to be provided with a section similar to the "bulb line" shown in fig. 16, and the rail vehicle can turn around when driving to the section of the "bulb line" of the track beam 300. As shown in fig. 16, the rail vehicle can travel in the forward direction (the direction indicated by an arrow a1 in fig. 16). When the rail vehicle makes a u-turn, the rail vehicle enters the circular track section 302 from the switch 301, and the rail vehicle makes a round around the circular track section 302 and then is converted from a forward driving (i.e., a direction indicated by an arrow a1 shown in fig. 16) to a reverse driving (i.e., a direction indicated by an arrow a2 shown in fig. 16).

When the rail vehicle is switched from the forward driving to the reverse driving, the positive charging rail 3a is adapted to be in switching contact with the positive current receiving plates 151 of the two current collectors 1, and the negative charging rail 3b is adapted to be in switching contact with the negative current receiving plates 152 of the two current collectors 1.

It should be noted that "adapted" in the above description that "the positive charging rail 3a is adapted to be in switching contact with the positive current receiving plates 151 of the two current collectors 1, and the negative charging rail 3b is adapted to be in switching contact with the negative current receiving plates 152 of the two current collectors 1" means that the positive charging rail 3a and the positive current receiving plates 151, and the negative charging rail 3b and the negative current receiving plates 152 may have a state of being engaged with and disengaged from each other. When the rail vehicle needs to be charged, the positive charging rail 3a is in contact with the positive current receiving plate 151, and the negative charging rail 3b is in contact with the negative current receiving plate 152. When the rail vehicle does not need to be charged, the positive charging rail 3a and the positive current receiving plate 151, and the negative charging rail 3b and the negative current receiving plate 152 are in a non-contact separated state.

For example, the charging system 100 may be disposed at a charging area such as a station or a charging point, when the rail vehicle needs to be charged, the rail vehicle moves into the charging area, the positive charging rail 3a is in contact with the positive current receiving plate 151, and the negative charging rail 3b is in contact with the negative current receiving plate 152, so as to charge the rail vehicle. When the rail vehicle exits the charging area, the positive charging rail 3a is separated from the positive current receiving plate 151, and the negative charging rail 3b is separated from the negative current receiving plate 152, so as to disconnect the charging of the rail vehicle. Of course, the charging system 100 may be disposed along the entire length of the rail beam 300.

As shown in fig. 7, in some embodiments of the present invention, the positive charging rail 3a and the negative charging rail 3b are both disposed on the track beam 300, and the distances of the positive charging rail 3a and the negative charging rail 3b from the center line of the track beam 300 are not equal. Thus, when the rail vehicle travels forward to the charging area, the positive charging rail 3a contacts the positive current receiving plate 151 of one of the two current collectors 1, and the negative charging rail 3b contacts the negative current receiving plate 152 of one of the two current collectors 1. When the rail vehicle turns around and runs reversely to the charging area, the positive charging rail 3a contacts with the positive current receiving plate 151 of the other of the two current collectors 1, and the negative charging rail 3b switches to contact with the negative current receiving plate 152 of the other of the two current collectors 1, so as to achieve the reversing charging effect of the rail vehicle.

A charging system 100 according to an embodiment of the present invention, which charging system 100 may charge a rail vehicle, is described below with reference to fig. 1 to 16. It is to be understood that the following description is only exemplary, and not restrictive of the invention.

As shown in fig. 1 to 3 and 15, a charging system 100 according to an embodiment of the present invention includes: current collector 1, lift platform 2 and charging rail 3.

As shown in fig. 13 to 14, each current collector 1 includes: support frame 11, connecting axle 12, elastic component 13, fixed arm 14 and current-receiving plate 15. The connecting shaft 12 comprises a connecting column 121 and an outer cylinder 122, and the outer cylinder 122 is sleeved on the connecting column 121 from the lower end of the connecting column 121. The elastic element 13 is a spring and is sleeved on the connecting column 121, the top end of the elastic element 13 is abutted against the supporting frame 11, and the bottom end of the elastic element 13 is abutted against the top of the outer cylinder 122.

The fixing arm 14 is formed in a fork shape, an upper end of the fixing arm 14 is bolted to the outer cylinder 122, and a lower end of the fixing arm 14 is provided with a first sub-arm 141 and a second sub-arm 142 which are spaced apart from each other. The positive current receiving plate 151 is connected to the second sub-arm 142, and the negative current receiving plate 152 is connected to the first sub-arm 141. Flexible buffers 143 are disposed between the first sub-arm 141 and the negative current-receiving plate 152, and between the second sub-arm 142 and the positive current-receiving plate 151.

The supporting frame 11 includes a fixing plate 111, an outer sleeve 112 and a plurality of extension arms 113, the fixing plate 111 is fixed on the bogie 200 of the railway vehicle by bolts, the outer sleeve 112 is sleeved on the outer sleeve 122, and the extension arms 113 are connected between the outer sleeve 112 and the fixing plate 111. The upper end of the connection column 121 is provided with a stop portion 1211, and the stop portion 1211 stops against the upper surface of the fixing plate 111 to prevent the connection column 121 from separating from the fixing plate 111.

As shown in fig. 4 to 11, the elevating platform 2 includes: a placing plate 21, a driving member 22, two retractable telescopic members 23, a containing box 25 and an opening and closing device 24. The placement plate 21, the driving member 22, the extendable member 23, and the opening/closing device 24 can be accommodated in the accommodating box 25, and the accommodating box 255 is provided in the escape passage of the track system.

An accommodating space is arranged in the accommodating box 25, and two extending openings 25a arranged at intervals are arranged at the top of the accommodating box 25. As shown in fig. 8, the charging rails 3 are two and arranged in parallel. Be equipped with the supporting seat 26 that four intervals set up on lift platform 2, the bottom of supporting seat 26 links to each other with lift platform 2, and the top of supporting seat 26 is equipped with the location lug 261 that two intervals set up, and every location lug 261 all with supporting seat 26 bolted connection, inject the space of placing of charging rail 3 between two location lugs 261. When the charging rail 3 is assembled with the support bases 26, the charging rail 3 can be placed on the two support bases 26, and the positioning projections 261 can be stopped on the outer peripheral wall of the charging rail 3, thereby being capable of fixing the charging rail 3 well.

The driving piece 22 is a hydraulic driving cylinder, the upper ends of the driving piece 22 and the two telescopic pieces 23 are connected with the bottom wall of the placing plate 21, the lower ends of the driving piece 22 and the two telescopic pieces 23 are connected with the bottom plate 27, and the two telescopic pieces 23 are distributed on two sides of the driving piece 22. Each telescopic member 23 includes a pair of link arm groups 231, each link arm group 231 may include a first pivot seat 2314, a second pivot seat 2315, a first slide seat 2316, a second slide seat 2317, a first link arm 2311 and a second link arm 2312, the first pivot seat 2314 may be fixedly disposed at the bottom of the placing plate 21, the first pivot seat 2314 and the second pivot seat 2315 may be spaced apart in the up-down direction, the second slide seat 2317 may be fixedly disposed at the bottom of the placing plate 21, the second slide seat 2317 and the first slide seat 2316 may be spaced apart in the up-down direction, an upper end of the first link arm 2311 may be pivotally connected with the first pivot seat 2314, a lower end of the first link arm 2311 may be rotatably and slidably connected with the first slide seat 2316, an upper end of the second link arm 2312 may be rotatably and slidably connected with the second slide seat 2317, a lower end of the second link arm 2312 may be pivotally connected with the second pivot seat 2315, the first link arm 2311 and the second link arm 2312 are pivotally connected therebetween.

The opening and closing device 24 includes a vertical linkage unit 2421 and a lateral linkage unit 2422. The vertical linkage unit 2421 includes: a mounting base 24211, a first connector 24212, a second connector 24213, and a third connector 24214, wherein the mounting base 24211 may be provided on the placing plate 21, a first end of the third connector 24214 may be rotatably provided on the mounting base 24211, and the first connector 24212 and the second connector 24213 may be rotatably connected to the third connector 24214, respectively. The lateral linkage unit 2422 includes: a moving part 24221, a fixing part 24222 and two rotating parts, wherein the upper end of the second connecting part 24213 is pivotally connected with the fixing part 24222, the upper end of the first connecting part 24212 is connected with the moving part 24221, and the fixing part 24222 is fixed on the inner peripheral wall of the accommodating box 25.

The moving member 24221 includes a first moving arm 24221a, a second moving arm 24221b, and a third moving arm 24221c, the first moving arm 24221a extends in the length direction (the front-rear direction as viewed in fig. 11) of the opening and closing plate 241, one end of the first moving arm 24221a is connected to the upper end of the first connecting member 24212, and the other end of the first moving arm 24221a is rotatably connected to the first ends of the second and third moving

arms

24221b and 24221 c. The two rotating levers 24223 are disposed to intersect and the two rotating levers 24223 are rotatably engaged, one end of each of the rotating levers 24223 may be rotatably connected to one of the opening and closing plates 241, the other end of each of the rotating levers 24223 may be rotatable and slidable with respect to the other opening and closing plate 241, and the moving member 24221 may be connected to the two rotating levers 24223 to change the angle of the two rotating levers 24223.

As shown in fig. 15, the positive charging rail 3a is located on the left side of the central axis of the track beam 300, the negative charging rail 3b is located on the right side of the central axis of the track beam 300, the distance between the positive charging rail 3a and the central axis of the track beam 300 is D1, the distance between the negative charging rail 3b and the central axis of the track beam 300 is D2, and D1 < D2. The two current collectors 1 are located on the left and right sides of the central axis of the track beam 300, and the distance between the two current collectors 1 and the central axis of the track beam 300 is the same.

Specifically, when the rail vehicle needs to be charged, the driving member 22 drives the placing plate 21 to move upward, whereby the charging rail 3 can be moved upward. The angle between first link 24212 and second link 24213 increases and the upper end of first link 24212 can pull first movable arm 24221a forward and move first movable arm 24221a while applying a pulling force to second movable arm 24221b and third movable arm 24221c, second movable arm 24221b and third movable arm 24221c rotate relative to first movable arm 24221a, and the angle between second movable arm 24221b and third movable arm 24221c decreases. Under the pulling force of the second and third

movable arms

24221b and 24221c, the two rotating levers 24223 relatively rotate and the angle β between the two rotating levers 24223 increases, whereby the two opening and closing plates 241 can be pulled to move away from each other, whereby the protruding opening 25a on the accommodating case 25 can be opened.

As the charging rail 3 rises, the charging rail 3 may contact the current collector 1, the elastic member 13 is gradually compressed, and the elastic member 13 may apply a downward reaction force to the connecting shaft 12. Thus, with the above arrangement, the positive current receiving plate 151 of one current collector 1 and the positive charging rail 3a can be tightly attached together, and the negative current receiving plate 152 of the other current collector 1 and the negative charging rail 3b can be tightly attached together, so that the charging stability of the charging system 100 can be improved.

After the rail vehicle is charged, the driving member 22 drives the placing plate 21 to move downward, so that the charging rail 3 can be driven to move downward, and the charging rail 3 is separated from the current collector 1. As the angle between the first linkage 24212 and the second linkage 24213 decreases as the charging rail 3 moves downward, the upper end of the first linkage 24212 may push the first movable arm 24221a to move backward, and the first movable arm 24221a may apply a pushing force to the second movable arm 24221b and the third movable arm 24221c while moving. Second and third

movable arms

24221b and 24221c decreases. Under the urging force of the second and third

movable arms

24221b and 24221c, the two rotating levers 24223 relatively rotate and the angle β between the two rotating levers 24223 decreases, whereby the two opening and closing plates 241 can be pulled to move in the direction away from and close to each other. When all of the driving member 22, the placing plate 21, and the charging rail 3 are stored in the storage box 25, the two opening and closing plates 241 just close the protruding opening 25a of the storage box 25.

It is to be understood that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not 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 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 system for charging a rail vehicle traveling on a rail beam, comprising:

the current collector is arranged on the rail vehicle;

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

a charging rail provided on the placing plate to move up and down following the placing plate, the charging rail being movable to contact with the current collector;

the lift platform still includes: an opening and closing device having an open state and a closed state; when the opening and closing device is in an opening state, the opening and closing device avoids a movement path of the charging rail; when the opening and closing device is in a closed state, the opening and closing device blocks the rising of the charging rail.

2. The charging system of claim 1, wherein the lift platform further comprises: the upper end of the telescopic piece is connected with the placing plate, and the telescopic piece can stretch in the height direction to support the placing plate when the placing plate moves.

3. The charging system of claim 2, wherein each of said telescoping members comprises at least one set of connecting arms, each of said set of connecting arms comprising a first pivot mount, a second pivot mount, a first slide mount, a second slide mount, a first connecting arm, and a second connecting arm;

the first pivoting seat is fixedly arranged at the bottom of the placing plate, and the first pivoting seat and the second pivoting seat are arranged at intervals in the vertical direction;

the second sliding seat is fixedly arranged at the bottom of the placing plate, and the second sliding seat and the first sliding seat are arranged at intervals in the vertical direction;

the first connecting arm and the second connecting arm are connected in a pivoting manner; the upper end of the first connecting arm is pivotally connected with the first pivoting seat, and the lower end of the first connecting arm is rotatably and slidably connected with the first sliding seat; the upper end of the second connecting arm is rotatably and slidably connected with the second sliding seat, and the lower end of the second connecting arm is pivotally connected with the second pivoting seat.

4. The charging system according to claim 3, wherein:

the first sliding seat is provided with a first sliding chute, the lower end of the first connecting arm is provided with a first sliding block, and the first sliding block is rotatably and slidably matched with the first sliding chute;

the second sliding seat is provided with a second sliding groove, a second sliding block is arranged at the upper end of the second connecting arm, and the second sliding block is rotatably and slidably matched with the second sliding groove.

5. The charging system according to claim 1, wherein the opening and closing device includes: the linkage mechanism is connected with the opening and closing plate and the placing plate;

when the placing plate moves up and down, the placing plate drives the opening and closing plate to move through the linkage mechanism, so that the opening and closing device is switched between an opening state and a closing state;

when the opening and closing device is in an opening state, the opening and closing plate avoids the movement path of the charging rail, and in a closing state, the opening and closing plate blocks the rising of the charging rail.

6. The charging system of claim 5, wherein the linkage mechanism comprises:

one end of the vertical linkage unit is connected with the placing plate so as to be driven by the placing plate to move;

the other end of the vertical linkage unit is connected with the transverse linkage unit to drive the transverse linkage unit to move, and the transverse linkage unit is connected with the opening and closing plate and drives the opening and closing plate to move.

7. The charging system according to claim 6, wherein the vertical linkage unit includes:

the mounting base is arranged on the placing plate;

and one end of the first connecting piece is in running fit with the mounting base, and the other end of the first connecting piece is in running connection with the transverse linkage unit.

8. The charging system of claim 7, wherein the vertical linkage unit further comprises:

and one end of the second connecting piece is in running fit with the mounting base, and the other end of the second connecting piece is connected with the transverse linkage unit.

9. The charging system of claim 8, wherein the vertical linkage unit further comprises:

and the first end of the third connecting piece is rotatably arranged on the mounting base, and the second end of the third connecting piece is simultaneously in running fit with the first connecting piece and the second connecting piece.

10. The charging system of claim 6, wherein the lateral linkage unit comprises:

the moving member is connected with the vertical linkage unit and driven by the vertical linkage unit to move;

the fixed part is in sliding fit with the moving part and is static relative to the track beam;

the two rotating rods are arranged in a crossed mode and are in pivot connection through pivot shafts, one end of each rotating rod is in pivot connection with one opening and closing plate, and the other end of each rotating rod is in rotatable and slidable connection with the other opening and closing plate;

the moving member with two dwang link to each other in order to change the contained angle of two dwang.

11. The charging system according to claim 10, wherein the number of the opening/closing plates is two, each of the opening/closing plates is provided with a third sliding groove extending in a length direction thereof, a third slider slidably engaged with the third sliding groove is provided in the third sliding groove, two ends of the rotating rod are rotatably connected to the third sliders in the different third sliding grooves, respectively, and the pivot shaft is stationary with respect to the rail beam.

12. The charging system according to claim 10, wherein the number of the opening/closing plates is two, at least one of the opening/closing plates is provided with a third sliding groove extending in a length direction thereof, a third sliding block slidably engaged with the third sliding groove is provided in the third sliding groove, the number of the third sliding blocks is two, one end of each of the rotating rods is rotatably connected to the third sliding block, and the other end of each of the rotating rods is rotatably connected to the corresponding opening/closing plate.

13. The charging system of any one of claims 1-12, wherein the lift platform further comprises:

the containing box, be equipped with accommodation space in the containing box, the driving piece with it all is suitable for to establish to charge the rail in the accommodation space, accommodation space's top has the mouth that stretches out, it is suitable for to pass to charge the rail stretch out the mouth the containing box.

14. The charging system of claim 1, wherein the current collector comprises:

a support bracket adapted to be secured to the rail vehicle;

the connecting shaft is arranged on the supporting frame and can move up and down relative to the supporting frame;

the elastic piece is respectively matched with the support frame and the connecting shaft;

the positive current receiving plate and the negative current receiving plate are arranged at the lower end of the connecting shaft at intervals.

15. The charging system according to claim 14, wherein the connecting shaft includes:

connecting columns; and

the outer barrel is sleeved outside the connecting column, the outer barrel can move up and down relative to the connecting column, the elastic part is sleeved outside the connecting column, one end of the elastic part abuts against the supporting frame, and the other end of the elastic part abuts against the outer barrel.

16. The charging system according to claim 15, wherein the connecting column penetrates through the upper end surface of the support frame, and the connecting column is provided with a stopper portion abutting against the upper end surface of the support frame.

17. The charging system of claim 14, wherein the support bracket comprises:

a stationary plate adapted to be secured to the rail vehicle;

the outer sleeve is arranged below the fixing plate and is arranged at intervals with the fixing plate;

the two ends of each extension arm are respectively connected with the fixing plate and the outer sleeve, the upper end of the connecting shaft is connected with the fixing plate, and the lower end of the connecting shaft penetrates through the outer sleeve to be connected with the positive current receiving plate and the negative current receiving plate.

18. The charging system according to claim 17, wherein one of the connecting shaft and the outer sleeve is provided with a rotation stop block, and the other is provided with a rotation stop groove adapted to the rotation stop block.

19. The charging system of claim 17, wherein the support bracket further comprises: and the inner sleeve is positioned between the outer sleeve and the connecting shaft.

20. The charging system of claim 17, wherein at least one of the plurality of extension arms is provided with a first weight-reducing slot.

21. The charging system of claim 14, wherein the current collector further comprises: the upper end of the fixed arm is connected with the connecting shaft, the lower end of the fixed arm extends downwards to form a first sub-arm and a second sub-arm which are arranged at intervals, the positive current receiving plate is arranged at the lower end of the first sub-arm, and the negative current receiving plate is arranged at the lower end of the second sub-arm.

22. The charging system of claim 21, wherein at least one of the first sub-arm and the second sub-arm is provided with a second weight-reducing slot.

23. The charging system according to claim 21, wherein a flexible buffer is provided between the positive current receiving plate and the first sub-arm, and between the negative current receiving plate and the second sub-arm.

24. The charging system according to claim 1, wherein the current collectors are two;

the number of the charging rails is two, and the two charging rails are divided into a positive charging rail and a negative charging rail;

the charging system is configured such that when the rail vehicle is switched between forward running and u-turn running, the positive charging rail is adapted to be in switching contact with the positive current receiving plates of the two current collectors, and the negative charging rail is adapted to be in switching contact with the negative current receiving plates of the two current collectors.

25. The charging system of claim 24, wherein the positive charging rail and the negative charging rail are both disposed on a track beam, and wherein the positive charging rail and the negative charging rail are not equidistant from a centerline of the track beam.