CN211918432U - Power supply management system in garage of rail vehicle - Google Patents
Power supply management system in garage of rail vehicle Download PDFInfo
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- CN211918432U CN211918432U CN201922272584.9U CN201922272584U CN211918432U CN 211918432 U CN211918432 U CN 211918432U CN 201922272584 U CN201922272584 U CN 201922272584U CN 211918432 U CN211918432 U CN 211918432U
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Abstract
The utility model discloses a power supply management system in rail vehicle's storehouse, because this application has set up a plurality of connection interface that are on a parallel with track and one by one interval distribution at orbital side, therefore, the staff utilize shorter connecting device alright get up with the in-process with power supply socket and the connection interface nearby of removing rail vehicle in the storehouse, need not to use longer cable, on the one hand staff labour saving and time saving when removing connecting device, on the other hand is because connecting device is difficult to contact ground less, sliding friction can not take place with ground at rail vehicle's removal in-process connecting device yet, the electric leakage hidden danger has been eliminated.
Description
Technical Field
The utility model relates to a rail vehicle field especially relates to a rail vehicle's interior power supply management system of storehouse.
Background
The rail vehicle needs to be regularly put in storage for operations such as maintenance and the like, when the rail vehicle enters the storage, the power supply in the storage is usually needed to supply power to the rail vehicle so as to move the rail vehicle, in the prior art, a power supply plug of the power supply in the storage needs to be connected to a power supply socket on the rail vehicle so as to supply power to a traction motor of the rail vehicle, and therefore the rail vehicle needs to drive a cable connected with the power supply plug to move for a longer distance, so that the cable is longer, on one hand, a worker can waste time and labor when moving the longer cable, and the rail vehicle is easy to cause the abrasion of the cable when the driven cable moves, so that.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rail vehicle's power supply management system in storehouse has improved work efficiency, has eliminated the electric leakage hidden danger.
In order to solve the technical problem, the utility model provides a power supply management system in rail vehicle's storehouse, include:
a power supply in the warehouse;
the plurality of connecting interfaces are arranged on the side edge of the track where the rail vehicle is located, are parallel to the track and are distributed at intervals one by one, and are respectively connected with the power supply in the garage;
the first end of the connecting device is connected with a power supply socket of the railway vehicle, and the second end of the connecting device is suspended in the air, so that the second end of the connecting device is connected with the connecting interface closest to the second end of the connecting device, and the traction motor can be electrically operated.
Preferably, the connecting device and the power supply socket are two;
the first end of each connecting device is connected with the corresponding power supply socket, and the second end of each connecting device is suspended;
the power supply management system in the garage of the rail vehicle further comprises:
the fixed contact is connected with the traction motor;
a main contact connected to the fixed contact and the mechanical operating device, respectively;
the mechanical operation device is used for connecting the main contact with one of the power supply sockets through the mechanical operation device so that the traction motor can be electrically operated.
Preferably, the power supply management system in the garage of the rail vehicle further includes:
the normally closed contact is connected in series with a main broken ring of a vehicle-mounted power circuit breaker of the railway vehicle and is connected with the mechanical operation device;
the mechanical operating means is also used for opening the normally closed contact to cut off the circuit breaker while the user connects the main contact with one of the power supply sockets through the mechanical operating means.
Preferably, the power supply management system in the garage of the rail vehicle further includes:
auxiliary contacts respectively connected with the control device, the auxiliary power supply and the mechanical operating device;
the mechanical operating device is further used for a user to connect the main contact with one of the power supply sockets through the mechanical operating device and turn over the state of the auxiliary contact while disconnecting the normally closed contact;
the auxiliary power supply;
the control device is connected with the main broken ring and is used for controlling an alarm to give an alarm when the state of the auxiliary contact is a non-default state and the main broken ring is not disconnected;
and the alarm is connected with the control device.
Preferably, the power supply management system in the garage of the rail vehicle further includes:
the power supply switch is respectively connected with the fixed contact and the traction motor;
the garage motor car starting switch is connected with the control device and used for sending a motor car command to the control device through a user;
the control device is further configured to control the power supply switch to be turned on when the motor train command is received, and control the power supply switch to be turned off when the motor train command is not received.
Preferably, the control device is further used for prohibiting the output of a control signal for switching on and off and a control signal for opening the pantograph-lifting valve when the motor train command is received.
Preferably, the connecting device comprises a wire and a power bar;
the first end of the wire is used as the first end of the connecting device, the second end of the wire is connected with the first end of the power bar, and the second end of the power bar is used as the second end of the connecting device;
the plurality of connection interfaces are respectively connected with the positive electrodes of the power supplies in the warehouse;
wherein the negative pole of the load on the rail vehicle is grounded through the steel rail.
Preferably, the control device is a central control unit of the locomotive.
Preferably, the power supply management system in the garage of the rail vehicle further includes:
the limiting device is connected with the mechanical operating device and used for limiting the mechanical operating device to an original position when the mechanical operating device is not unlocked by the unlocking key and releasing the limiting of the mechanical operating device when the mechanical operating device is unlocked by the unlocking key;
a switching device connected to a pantograph valve of a pantograph of the railway vehicle, for closing the pantograph valve when not turned on by the key and opening the pantograph valve when turned on by the key;
a unique said opening key for connection with said limit stop or said switch device for opening one of said limit stop or said switch device therethrough at the same time.
Preferably, the limiting device is a mechanical lock.
The utility model provides a power supply management system in rail vehicle's storehouse, because this application has set up a plurality of connection interface that are on a parallel with track and one by one interval distribution at orbital side, therefore, the staff utilize shorter connecting device alright get up with the in-process with power supply socket and the connection interface nearby of removing rail vehicle in the storehouse, need not to use longer cable, on the one hand staff labour saving and time saving when removing connecting device, on the other hand is because connecting device is difficult to contact ground less, sliding friction can not take place with ground at rail vehicle's in-process connecting device yet, the electric leakage hidden danger has been eliminated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the prior art and the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an in-warehouse power supply management system for a rail vehicle according to the present invention;
fig. 2 is a schematic structural diagram of another in-warehouse power supply management system for a rail vehicle according to the present invention.
Detailed Description
The core of the utility model is to provide a rail vehicle's power supply management system in storehouse has improved work efficiency, has eliminated the electric leakage hidden danger.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an in-warehouse power supply management system for a rail vehicle according to the present invention, including:
a power supply 1 in the warehouse;
the plurality of connecting interfaces 2 are arranged on the side of the track where the rail vehicle is located, are parallel to the track and are distributed at intervals one by one, and are respectively connected with the power supply 1 in the garage;
the first end of the connecting device 3 is connected with a power supply socket of the rail vehicle, and the second end of the connecting device 3 is suspended in the air, so that the traction motor can be electrically operated by connecting the second end of the connecting device 3 with the connecting interface 2 closest to the second end of the connecting device 3.
In particular, in view of the technical problems in the background art, the embodiment of the present invention provides a plurality of connection interfaces 2 connected to a power source 1 in a storage, the connection interfaces 2 can be used for supplying power, and the connection interfaces 2 are distributed in parallel to a track at intervals one by one at positions of a track side, that is, in the process of running a rail vehicle in the storage, no matter which position the track side runs to, the connection interfaces 2 are distributed at the track side, so that the connection device 3 can be set to be shorter in length, in the process of moving the rail vehicle in the storage, the connection interface 2 closest to the rail vehicle can be connected to the second end of the connection device 3 at first so that the rail vehicle can move a distance, when the connection device 3 disconnects the second end from the connection interface 2 due to insufficient length, the second end of the connection device 3 can be connected to the connection interface 2 closest to the rail vehicle at this time again (or can be connected to the front of the rail vehicle) One connection interface 2) which is farthest from the rail vehicle in the advancing direction and moves next time; in the above scheme, because connecting device 3 can set up to shorter length, consequently the staff labour saving and time saving when removing connecting device 3, connecting device 3 is difficult to contact ground moreover and takes place the damaged situation of friction at the in-process that rail vehicle removed, has got rid of the potential safety hazard of electric leakage.
Specifically, the connection interface 2 may be regarded as an interface for supplying power, which is connected to the power supply 1 in the storage, and the connection device 3 may be regarded as a section of conductor, which is used for connecting the power supply 1 in the storage to the rail vehicle.
Wherein, the distance between a plurality of 2 sharp and the track of connection interface place can independently be set for, and a plurality of 2 interval distances between each other of connection interface also can independently be set for, the embodiment of the utility model provides a do not limit here.
It is worth mentioning that the embodiment of the utility model provides an in-warehouse power supply 1 can choose for use 36V's DC power supply, because of 36V is human safe voltage, consequently can guarantee staff's safety.
Of course, the power supply 1 in the warehouse may be other types besides the 36V dc power supply, and the embodiment of the present invention is not limited herein.
The utility model provides a power supply management system in rail vehicle's storehouse, because this application has set up a plurality of connection interface that are on a parallel with track and one by one interval distribution at orbital side, therefore, the staff utilize shorter connecting device alright get up with the in-process with power supply socket and the connection interface nearby of removing rail vehicle in the storehouse, need not to use longer cable, on the one hand staff labour saving and time saving when removing connecting device, on the other hand is because connecting device is difficult to contact ground less, sliding friction can not take place with ground at rail vehicle's in-process connecting device yet, the electric leakage hidden danger has been eliminated.
For better explaining the embodiment of the present invention, please refer to fig. 2, fig. 2 is a schematic structural diagram of another power supply management system in a railway vehicle warehouse according to the present invention, and on the basis of the above embodiment:
as a preferred embodiment, the connecting means 3 and the supply socket are both two;
the first end of each connecting device 3 is connected with the corresponding power supply socket, and the second end is suspended;
the power supply management system in the garage of the rail vehicle further comprises:
a fixed contact 4 connected with the traction motor;
a main contact 5 connected to the fixed contact 4 and the mechanical operation device 6, respectively;
a mechanical operating device 6 for connecting the main contact 5 with one of the supply sockets, so that the traction motor is electrically operated.
Specifically, considering that the rail vehicle may enter the warehouse from two different directions, therefore, in order to facilitate the connection interface 2 of the power supply 1 in the warehouse to be connected to the rail vehicle through the connection device 3, the power supply sockets on the rail vehicle in the embodiment of the present invention are provided with two (which may be respectively disposed on the left and right sides of the rail vehicle), each power supply socket has its own connection device 3, so that when the worker connects the power supply 1 in the warehouse to the rail vehicle, the worker can connect the second end of the connection device 3 on the side of the connection interface 2 to the nearest connection interface 2, and then connect the main contact 5 to the power supply socket corresponding to the connection device 3 connected to the connection interface 2 through the mechanical operation device 6, so as to achieve the connection of the power supply 1 in the warehouse, and can select to connect one of the two power supply sockets through the mechanical operation device 6, the two power supply sockets are prevented from supplying power to the traction motor at the same time, and potential safety hazards are eliminated.
The fixed contact 4 and the main contact 5 connected thereto may be in various specific forms, for example, may be a connecting wire, a first end of the connecting wire is used as the fixed contact 4, and a second end is used as the main contact 5, etc., and the embodiment of the present invention is not limited herein.
Specifically, the mechanical operating device 6 may be a mechanical device capable of controlling the main contact 5 to change between three positions, which may include a floating default position, a first position connected to one of the power supply sockets, and a second position connected to the other power supply socket.
As a preferred embodiment, the in-house power supply management system for a railway vehicle further includes:
a normally closed contact 7 connected in series with a main breaker ring of a vehicle-mounted power circuit breaker of the rail vehicle and connected with a mechanical operation device 6;
the mechanical operating means 6 is also used for opening the normally closed contact 7 at the same time as the user connects the main contact 5 with one of the supply sockets by means of the mechanical operating means 6, in order to cut off the circuit breaker.
Specifically, consider that the staff is in the storehouse when being connected main contact 5 and one of them power supply socket through mechanical operation device 6 power supply 1 has just been inserted rail vehicle, if vehicle mounted power does not then cause danger by the circumstances of cutting off this moment, the embodiment of the utility model provides an, when being connected main contact 5 and one of them power supply socket through mechanical operation device 6, the normally closed contact 7 of concatenating in vehicle mounted power circuit breaker's the main broken ring of rail vehicle also can be disconnected by mechanical operation device 6, and consequently, even the staff forgets and cuts off vehicle mounted power before inserting power supply 1 in the storehouse, also can accomplish vehicle mounted power circuit breaker's cutting off simultaneously when the operation connects and unloads operating means, has eliminated the potential safety hazard.
As a preferred embodiment, the in-house power supply management system for a railway vehicle further includes:
an auxiliary contact 8 connected to the control device 10, the auxiliary power supply 9, and the mechanical operation device 6, respectively;
the mechanical operating device 6 is also used for the user to turn over the state of the auxiliary contact 8 while connecting the main contact 5 with one of the power supply sockets through the mechanical operating device 6 and disconnecting the normally closed contact 7;
an auxiliary power supply 9;
the control device 10 is connected with the main broken ring and is used for controlling the alarm 11 to give an alarm when the state of the auxiliary contact 8 is a non-default state and the main broken ring is not disconnected;
and an alarm 11 connected with the control device 10.
In particular, the mechanical operating device 6 can also reverse the state of the auxiliary contact 8, while connecting the main contact 5 to one of the supply sockets and disconnecting the normally closed contact 7, and, when the state of the auxiliary contact 8 changes, since the auxiliary contact 8 is also connected with the auxiliary power supply 9, the control device 10 can sense the level change, the control device 10 can judge whether the main broken ring is broken when the state of the auxiliary contact 8 changes (when the mechanical operating device 6 operates the main contact 5 to be connected with one of the power supply sockets), if the main broken ring is not broken, the normally closed contact 7 or the mechanical operating device 6 can be in failure, at this time, the danger that the vehicle-mounted power supply and the power supply 1 in the garage simultaneously supply power for the rail vehicle can occur, the control device 10 can then control the alarm 11 to give an alarm at this time, so that the staff can find and respond in time.
Wherein, the mode of whether the main broken ring of detection breaks can be very many, for example detects the change of the high-low level on the main broken ring etc. the embodiment of the utility model provides a do not limit here.
Wherein, the default state of auxiliary contact 8 can be for the state when mechanical operating device 6 does not connect main contact 5 with one of them power supply socket, when mechanical operating device 6 is connected main contact 5 with one of them power supply socket, then auxiliary contact 8 is non-default state, and the default state can also be for the shutoff for the closure, the embodiment of the utility model provides a do not limit here.
Specifically, the alarm 11 may be of various types, for example, may be a buzzer or a voice alarm device, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the in-house power supply management system for a railway vehicle further includes:
a power supply switch 12 connected to the fixed contact 4 and the traction motor, respectively;
an in-garage motor car start switch 13 connected to the control device 10 for a user to send a motor car command to the control device 10 therethrough;
the control device 10 is also used to control the power supply switch 12 to be turned on when a motor car command is received and to control the power supply switch 12 to be turned off when a motor car command is not received.
Specifically, in the embodiment of the present invention, when preparing a garage interior moving car, a user can press the garage interior moving car start switch 13 in advance so as to send a moving car command to the control device 10, the control device 10 can control the power supply switch 12 to be turned on when receiving the moving car command, and at this time, the fixed contact 4 and the traction motor can be powered on, otherwise, the fixed contact cannot be powered on, thereby further ensuring the safety of the garage interior moving car.
The garage motor car starting switch 13 can be an entity switch, a virtual switch on a touch screen, and the like, and the embodiment of the utility model provides a do not limit here.
As a preferred embodiment, the control device 10 is further configured to prohibit the output of the on/off control signal and the control signal for opening the pantograph valve when the motor vehicle command is received.
Specifically, the control device 10 can prohibit the output of a control signal for switching on and off and a control signal for opening the pantograph-raising valve when receiving a motor car command, that is, when a motor car is in a garage, the power supply 1 in the garage and the vehicle-mounted power supply can be further ensured not to simultaneously supply power to the rail vehicle, and the safety is further ensured.
As a preferred embodiment, the connection means 3 comprises a wire and a power bar;
the first end of the lead is used as the first end of the connecting device 3, the second end of the lead is connected with the first end of the power supply bar, and the second end of the power supply bar is used as the second end of the connecting device 3;
the plurality of connecting interfaces 2 are respectively connected with the positive pole of the power supply 1 in the warehouse;
wherein the negative pole of the load on the rail vehicle is earthed via the rail.
In particular, the power bar has an advantage of convenience in use because the power bar is in point-contact with the connection interface 2, so that the second end of the power bar can be safely separated from the connection interface 2 even if the stroke is too large during the movement of the rail vehicle.
Of course, besides the specific form of the conducting wire and the power bar, the connecting device 3 may be of other various types, and the embodiment of the present invention is not limited herein.
In a preferred embodiment, the control device 10 is a central control unit of the locomotive.
Specifically, the control device 10 is a central control unit of the locomotive, which can save cost, and the central control unit of the locomotive has stable performance and high processing speed.
Of course, the control device 10 may be of various types other than the central control unit of the locomotive, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the in-house power supply management system for a railway vehicle further includes:
a position limiting device 14 connected with the mechanical operation device 6 and used for limiting the mechanical operation device 6 to the original position when the mechanical operation device is not opened by the opening key and releasing the position limitation of the mechanical operation device 6 when the mechanical operation device is opened by the opening key;
the switch device is connected with the pantograph lifting valve of the pantograph of the railway vehicle and is used for closing the pantograph lifting valve when the switch device is not opened by the opening key and opening the pantograph lifting valve when the switch device is opened by the opening key;
a unique opening key for connection with the limiting device 14 or the switching device for opening one of the limiting device 14 or the switching device by it at the same time.
Specifically, the limiting device 14 is in a default state when not opened by the opening key, that is, the mechanical operating device 6 is limited to the original position, the mechanical operating device 6 cannot be operated, and the main contact 5 cannot be connected with one of the power supply sockets, while the switching device can close the pantograph-lifting valve when not opened by the opening key, and only one opening key can be opened at the same time, so that the vehicle-mounted power supply controlled by the pantograph-lifting valve and the warehouse power supply controlled by the limiting device 14 are limited to be connected to the rail vehicle at the same time, and the safety is further guaranteed.
The switching device may be regarded as a mechanical control device for controlling the opening and closing of the pantograph valve, which may itself be a mechanical lock, the state of which may be changed by an opening key, which may also be used to change the state of the limiting device 14, in order to release/maintain the limit to the mechanical operating device 6.
In a preferred embodiment, the position limiting device 14 is a mechanical lock.
Specifically, the mechanical lockset has the advantages of simple structure, low cost, long service life and the like.
Of course, besides the mechanical lock, the position limiting device 14 may be of other types, and the embodiment of the present invention is not limited herein.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An in-garage power supply management system for a rail vehicle, comprising:
a power supply in the warehouse;
the plurality of connecting interfaces are arranged on the side edge of the track where the rail vehicle is located, are parallel to the track and are distributed at intervals one by one, and are respectively connected with the power supply in the garage;
the first end of the connecting device is connected with a power supply socket of the railway vehicle, and the second end of the connecting device is suspended in the air, so that the second end of the connecting device is connected with the connecting interface closest to the second end of the connecting device, and the traction motor can be electrically operated.
2. The in-garage power supply management system for railway vehicles according to claim 1, characterized in that the connecting device and the power supply socket are both two;
the first end of each connecting device is connected with the corresponding power supply socket, and the second end of each connecting device is suspended;
the power supply management system in the garage of the rail vehicle further comprises:
the fixed contact is connected with the traction motor;
a main contact connected to the fixed contact and the mechanical operating device, respectively;
the mechanical operation device is used for connecting the main contact with one of the power supply sockets through the mechanical operation device so that the traction motor can be electrically operated.
3. The in-house power supply management system for a railway vehicle according to claim 2, further comprising:
the normally closed contact is connected in series with a main broken ring of a vehicle-mounted power circuit breaker of the railway vehicle and is connected with the mechanical operation device;
the mechanical operating means is also used for opening the normally closed contact to cut off the circuit breaker while the user connects the main contact with one of the power supply sockets through the mechanical operating means.
4. The in-house power supply management system for a railway vehicle according to claim 3, further comprising:
auxiliary contacts respectively connected with the control device, the auxiliary power supply and the mechanical operating device;
the mechanical operating device is further used for a user to connect the main contact with one of the power supply sockets through the mechanical operating device and turn over the state of the auxiliary contact while disconnecting the normally closed contact;
the auxiliary power supply;
the control device is connected with the main broken ring and is used for controlling an alarm to give an alarm when the state of the auxiliary contact is a non-default state and the main broken ring is not disconnected;
and the alarm is connected with the control device.
5. The in-house power supply management system for a railway vehicle according to claim 4, further comprising:
the power supply switch is respectively connected with the fixed contact and the traction motor;
the garage motor car starting switch is connected with the control device and used for sending a motor car command to the control device through a user;
the control device is further configured to control the power supply switch to be turned on when the motor train command is received, and control the power supply switch to be turned off when the motor train command is not received.
6. The in-garage power supply management system for railway vehicles according to claim 5, wherein the control device is further configured to prohibit output of the control signal for turning on/off the master switch and the control signal for turning on the pantograph control valve when the railcar command is received.
7. The power-in-garage management system for rail vehicles according to claim 2, characterized in that said connection means comprise a wire and a power bar;
the first end of the wire is used as the first end of the connecting device, the second end of the wire is connected with the first end of the power bar, and the second end of the power bar is used as the second end of the connecting device;
the plurality of connection interfaces are respectively connected with the positive electrodes of the power supplies in the warehouse;
wherein the negative pole of the load on the rail vehicle is grounded through the steel rail.
8. The in-garage power management system for rail vehicles according to claim 4, wherein said control device is a locomotive central control unit.
9. The system for managing supply of power to a rail vehicle in an interior according to any one of claims 2 to 8, further comprising:
the limiting device is connected with the mechanical operating device and used for limiting the mechanical operating device to an original position when the mechanical operating device is not unlocked by the unlocking key and releasing the limiting of the mechanical operating device when the mechanical operating device is unlocked by the unlocking key;
a switching device connected to a pantograph valve of a pantograph of the railway vehicle, for closing the pantograph valve when not turned on by the key and opening the pantograph valve when turned on by the key;
a unique said opening key for connection with said limit stop or said switch device for opening one of said limit stop or said switch device therethrough at the same time.
10. The system according to claim 9, wherein the restraint device is a mechanical lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922272584.9U CN211918432U (en) | 2019-12-17 | 2019-12-17 | Power supply management system in garage of rail vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922272584.9U CN211918432U (en) | 2019-12-17 | 2019-12-17 | Power supply management system in garage of rail vehicle |
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| Publication Number | Publication Date |
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| CN211918432U true CN211918432U (en) | 2020-11-13 |
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| CN201922272584.9U Active CN211918432U (en) | 2019-12-17 | 2019-12-17 | Power supply management system in garage of rail vehicle |
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| Country | Link |
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| CN (1) | CN211918432U (en) |
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