Rail vehicle pantograph control circuit, rail vehicle

Abstract

The present invention provides a rail vehicle pantograph control circuit and a rail vehicle. The control circuit includes: a pantograph raising solenoid valve that raises the pantograph when energized and lowers the pantograph when de-energized; a pantograph raising relay and a pantograph lowering relay, wherein the normally open contact corresponding to the control of the pantograph raising relay, the normally closed contact corresponding to the control of the pantograph lowering relay, and the pantograph raising solenoid valve are connected in series in a power supply circuit of the pantograph raising solenoid valve; and a pantograph enabling relay, wherein the normally open contact corresponding to the control of the pantograph enabling relay is connected in parallel with the normally closed contact corresponding to the control of the pantograph lowering relay. A pantograph raising bypass circuit is formed by the normally open contact corresponding to the control of the pantograph enabling relay. In the event that the normally closed contact of the pantograph lowering relay fails to remain closed, or a fault in the pantograph enabling circuit causes the normally open contact of the pantograph enabling relay to fail to close, this bypass circuit allows emergency pantograph raising.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and in particular to a rail vehicle pantograph control circuit and a rail vehicle. Background Art

[0002] The pantograph is the main way for rail vehicles to obtain electricity. How to reliably realize the control of pantograph raising and lowering is very important for the safe operation of the vehicle. The existing pantograph control device uses push button switches, toggle switches and other switches to issue pantograph raising and lowering instructions, and control the pantograph solenoid valve coil to realize pantograph raising or lowering control. However, in the actual operation of the vehicle, due to factors such as vehicle vibration and component failure, single point failures in the control circuit often occur. The existing pantograph control method does not fully consider component failures and has no redundant control measures. Single point failures in the circuit can easily cause the pantograph control circuit to fail, and there is a problem that the pantograph cannot be raised or lowered normally when the vehicle is in operation. If the control circuit fails while the vehicle is running, it will cause abnormal pantograph lowering and the vehicle will not be able to raise the pantograph to obtain electricity, which poses a great safety risk. Summary of the Invention

[0003] In view of the problems existing in the prior art, the present invention provides a rail vehicle pantograph control circuit and a rail vehicle.

[0004] The present invention provides a pantograph control circuit for a railway vehicle, the control circuit comprising:

[0005] a bow raising solenoid valve, which raises the bow when energized and lowers the bow when de-energized;

[0006] A bow raising relay and a bow lowering relay, a normally open contact corresponding to the control of the bow raising relay, a normally closed contact corresponding to the control of the bow lowering relay, and the bow raising solenoid valve are connected in series in a power supply circuit of the bow raising solenoid valve;

[0007] The pantograph raising relay is allowed, and the normally open contact corresponding to the control of the pantograph raising relay is connected in parallel with the normally closed contact corresponding to the control of the pantograph lowering relay.

[0008] According to a railway vehicle pantograph control circuit provided by the present invention, the control circuit further includes:

[0009] The bow raising enabling relay, the normally open contact corresponding to the control of the bow raising enabling relay, the normally open contact corresponding to the control of the bow raising relay, the normally closed contact corresponding to the control of the bow lowering relay and the bow raising solenoid valve are connected in series in the power supply circuit of the bow raising solenoid valve.

[0010] According to a rail vehicle pantograph control circuit provided by the present invention, the normally open contact corresponding to the control of the pantograph raising enabling relay and the normally closed contact corresponding to the control of the pantograph lowering relay are connected in parallel with the normally open contact corresponding to the control of the pantograph raising permission relay.

[0011] According to a railway vehicle pantograph control circuit provided by the present invention, the control circuit further includes:

[0012] A zero-speed relay, wherein the normally closed contact corresponding to the control of the zero-speed relay is connected in parallel with the normally open contact corresponding to the control of the bow-lifting enabling relay;

[0013] in,

[0014] The zero-speed relay is energized when the rail vehicle stops running, and the normally closed contact corresponding to the control of the zero-speed relay is disconnected;

[0015] The zero-speed relay loses power when the rail vehicle is running, and the normally closed contact corresponding to the control of the zero-speed relay remains closed.

[0016] According to a railway vehicle pantograph control circuit provided by the present invention, the pantograph raising enabling relay controls whether to be energized or not through the pantograph raising enabling circuit, and the pantograph raising enabling circuit includes:

[0017] The bow-lifting enabling relay;

[0018] A three-position switch operating position relay at the same end as the bow-lift enabling relay;

[0019] a three-position switch operating position relay at the opposite end of the bow-lift enabling relay;

[0020] Among them, the normally open contacts corresponding to the three-position switch operating position relay at the same end, the normally open contacts corresponding to the three-position switch operating position relay at the opposite end and the bow-lifting enabling relay are connected in series in the power supply circuit of the bow-lifting enabling relay.

[0021] According to a railway vehicle pantograph control circuit provided by the present invention, the pantograph raising enabling circuit further includes:

[0022] The battery traction switch at the same end as the bow raising enabling relay, the battery traction switch at the same end and the bow raising enabling relay, the normally open contacts corresponding to the control of the three-position switch operating position relay at the same end, the normally open contacts corresponding to the control of the three-position switch operating position relay at the opposite end and the battery traction switch are connected in series in the power supply circuit of the bow raising enabling relay.

[0023] According to a railway vehicle pantograph control circuit provided by the present invention, the pantograph raising relay is controlled to be energized or not through a pantograph raising bypass circuit, and the pantograph raising bypass circuit includes:

[0024] The said bow raising relay is allowed;

[0025] A pantograph-raising-allowing bypass switch is connected in series with the pantograph-raising-allowing relay in a power supply circuit of the pantograph-raising-allowing relay.

[0026] According to a railway vehicle pantograph control circuit provided by the present invention, the pantograph raising relay and the pantograph lowering relay are controlled to be energized or not by a pantograph raising instruction circuit and a pantograph lowering instruction circuit respectively;

[0027] The bow raising instruction circuit includes:

[0028] the bow-lifting relay;

[0029] A bow raising button, wherein the bow raising button and the bow raising relay are connected in series in a power supply circuit of the bow raising relay;

[0030] The bow lowering instruction circuit includes:

[0031] the bow-drop relay;

[0032] A bow lowering button is connected in series with the bow lowering relay in the power supply circuit of the bow lowering relay.

[0033] According to a railway vehicle pantograph control circuit provided by the present invention, the control circuit includes:

[0034] An input / output control module, the input / output control module being configured to receive a pantograph raising instruction or a pantograph lowering instruction from a signaling system of the rail vehicle in an unmanned driving mode;

[0035] An unmanned driving mode relay for raising the bow, the unmanned driving mode relay for raising the bow being connected to the input / output control module, the normally open contact corresponding to the control of the unmanned driving mode relay for raising the bow being connected in series with the bow raising relay in another power supply circuit of the bow raising relay;

[0036] An unmanned driving mode relay for lowering the pantograph, the unmanned driving mode relay for lowering the pantograph being connected to the input / output control module, the normally open contact corresponding to the control of the unmanned driving mode relay for lowering the pantograph being connected in series with the pantograph lowering relay in another power supply circuit of the pantograph lowering relay;

[0037] in,

[0038] When the unmanned driving mode relay for raising the pantograph receives an activation command from the driver's cab of the signal system, the unmanned driving mode relay for raising the pantograph is energized, and the normally open contact of the corresponding control is closed; when the unmanned driving mode relay for raising the pantograph does not receive an activation command from the driver's cab of the signal system or is manually activated by operating the driver's cab key, the unmanned driving mode relay for raising the pantograph is de-energized, and the normally open contact of the corresponding control is opened;

[0039] When the pantograph raising relay receives a pantograph raising command from the signal system and the normally open contact corresponding to the control of the unmanned driving mode relay for pantograph raising is closed, the pantograph raising relay is energized;

[0040] When the unmanned driving mode relay for lowering the pantograph receives the driver's cab activation command from the signal system, the unmanned driving mode relay for lowering the pantograph is energized and the normally open contact of the corresponding control is closed; when the driver's cab activation command is not received from the signal system or the driver's cab key is manually activated, the unmanned driving mode relay for lowering the pantograph is de-energized and the normally open contact of the corresponding control is opened;

[0041] The pantograph lowering relay is energized when it receives a pantograph lowering command from a signal system and the normally open contact corresponding to the control of the unmanned driving mode relay for pantograph lowering is closed.

[0042] According to a railway vehicle pantograph control circuit provided by the present invention, the control circuit further includes:

[0043] The bow-lifting holding relay is connected in parallel with the bow-lifting solenoid valve, and the normally open contact corresponding to the control of the bow-lifting holding relay is connected in parallel with the normally open contact corresponding to the control of the bow-lifting relay.

[0044] The present invention also provides a rail vehicle, comprising the rail vehicle pantograph control circuit as described in any one of the above items.

[0045] The rail vehicle pantograph control circuit and rail vehicle provided by the present invention form a pantograph raising bypass circuit by allowing the normally open contacts of the corresponding control of the pantograph raising relay. When the normally closed contacts of the pantograph lowering relay cannot remain normally closed or the pantograph raising enabling circuit fails, causing the normally open contacts of the pantograph raising enabling relay to fail to close, the bypass pantograph raising measure is used to achieve emergency pantograph raising. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0047] Figure 1 A schematic diagram of a control circuit provided by the present invention;

[0048] Figure 2 This is another schematic diagram of a control circuit provided by the present invention. DETAILED DESCRIPTION

[0049] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0050] The rail vehicle pantograph control circuit provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0051] Figure 1 The control circuit diagram provided by the present invention is as follows: Figure 1 As shown, the present invention provides a rail vehicle pantograph control circuit, the control circuit comprising:

[0052] Bow raising solenoid valve Y01, the bow raising solenoid valve raises the bow when energized and lowers the bow when de-energized;

[0053] The bow raising relay K01 and the bow lowering relay K02, the normally open contacts corresponding to the control of the bow raising relay, the normally closed contacts corresponding to the control of the bow lowering relay and the bow raising solenoid valve are connected in series in the power supply circuit of the bow raising solenoid valve;

[0054] The bow raising relay K03 is allowed to connect in parallel the normally open contact of the corresponding control of the bow raising relay and the normally closed contact of the corresponding control of the bow lowering relay.

[0055] It should be noted that the present invention is applicable to both manually driven vehicles and unmanned vehicles.

[0056] Preferably, the pantograph raising solenoid valve adopts a level type solenoid valve. When it receives a continuous high level, the pantograph raising solenoid valve is energized, the air path is opened, and the pantograph is raised; when it receives a low level, the pantograph raising solenoid valve loses power and exhausts air, and the pantograph drops due to gravity.

[0057] Optionally, the control circuit further includes:

[0058] The bow raising enabling relay K05, the normally open contact corresponding to the control of the bow raising enabling relay, the normally open contact corresponding to the control of the bow raising relay, the normally closed contact corresponding to the control of the bow lowering relay and the bow raising solenoid valve are connected in series in the power supply circuit of the bow raising solenoid valve.

[0059] It should be noted that the conditions for raising the pantograph are pre-determined through the pantograph raising enabling relay to prevent vehicle accidents caused by incorrect pantograph raising operations when the pantograph raising conditions are not met.

[0060] Optionally, the normally open contact corresponding to the control of the bow raising enabling relay and the normally closed contact corresponding to the control of the bow lowering relay are connected in parallel with the normally open contact corresponding to the control of the bow raising enabling relay.

[0061] It should be noted that the normally open contacts corresponding to the control of the bow raising enable relay and the normally closed contacts corresponding to the control of the bow lowering relay are bypassed as a whole by allowing the normally open contacts corresponding to the control of the bow raising relay to be closed, that is, the normally open contacts corresponding to the control of the bow raising relay are used as an emergency redundant route for the normally open contacts corresponding to the control of the bow raising enable relay and the normally closed contacts corresponding to the control of the bow lowering relay. Therefore, when the bow raising enable relay or the bow lowering relay fails, the bow raising can be continued by allowing the bow raising relay.

[0062] Optionally, the control circuit further includes:

[0063] Zero-speed relay, the normally closed contact corresponding to the control of the zero-speed relay is connected in parallel with the normally open contact corresponding to the control of the bow-lifting enabling relay;

[0064] in,

[0065] The zero-speed relay is energized when the rail vehicle stops running, and the normally closed contact corresponding to the control of the zero-speed relay is disconnected;

[0066] When the zero-speed relay loses power while the rail vehicle is running, the normally closed contacts corresponding to the control of the zero-speed relay remain closed.

[0067] It should be noted that the zero-speed relay loses power when the vehicle is not at zero speed, and is used to bypass the normally open contacts of the corresponding control of the bow raising enable relay to prevent the abnormal loss of the bow raising enable signal during vehicle operation. That is, when the vehicle is driving, even if the bow raising conditions are not met and the bow raising enable relay loses power, the normally open contacts of the corresponding control of the bow raising enable relay change from closed to open, and the normally closed contacts of the corresponding control of the zero-speed relay remain closed, thereby ensuring the power supply to the bow raising solenoid valve and avoiding bow lowering when the vehicle is driving.

[0068] Preferably, the normally closed contacts of the corresponding zero-speed relays K10 and K11 are connected in series, and then connected in parallel with the pantograph raising enable signal to prevent the pantograph raising enable signal from being abnormally lost during vehicle operation, resulting in pantograph lowering and stopping in the tunnel. Furthermore, the contacts of the two zero-speed relays are connected in series to prevent a single zero-speed relay contact from becoming stuck when the vehicle is stationary, resulting in a failure to raise the pantograph and abnormal pantograph raising.

[0069] Optionally, the control circuit further includes:

[0070] The bow raising and holding relay K04 is connected in parallel with the bow raising solenoid valve, and the normally open contact corresponding to the control of the bow raising and holding relay is connected in parallel with the normally open contact corresponding to the control of the bow raising relay.

[0071] Preferably, in the control circuit, the power supply is connected to the first end of the normally closed contact corresponding to the control of the bow-lowering relay K02 and the first end of the normally open contact corresponding to the control of the bow-raising relay K03, the second end of the normally closed contact corresponding to the control of the bow-lowering relay K02 is connected to the first end of the normally open contact corresponding to the control of the bow-raising enabling relay K05, the first end of the normally open contact corresponding to the control of the bow-raising enabling relay K05 is simultaneously connected to the first end of the normally closed contact corresponding to the control of the zero-speed relay K10, the second end of the normally open contact corresponding to the control of the bow-raising enabling relay K05 is connected to the first end of the normally open contact corresponding to the control of the bow-raising relay K01 and the second end of the normally closed contact corresponding to the control of the zero-speed relay K11, and the normally closed contact corresponding to the control of the zero-speed relay K10 is connected to the first end of the normally open contact corresponding to the control of the bow-raising relay K01 and the second end of the normally closed contact corresponding to the control of the zero-speed relay K11. The second end of the closed contact is connected to the first end of the normally closed contact controlled by the zero-speed relay K11. The second end of the normally closed contact controlled by the zero-speed relay K11 is also connected to the second end of the normally open contact controlled by the bow-lifting relay K03. The first end of the normally open contact controlled by the bow-lifting relay K01 is also connected to the first end of the normally open contact controlled by the bow-lifting holding relay K04. The second end of the normally open contact controlled by the bow-lifting relay K01 is connected to the second end of the normally open contact controlled by the bow-lifting holding relay K04, the first end of the bow-lifting solenoid valve Y01 and the first end of the bow-lifting holding relay K04. The second end of the bow-lifting solenoid valve Y01 is connected to the negative pole of the power supply, and the second end of the bow-lifting holding relay K04 is connected to the negative pole of the power supply.

[0072] This embodiment forms a bow-raising bypass circuit by allowing the normally open contacts of the corresponding control of the bow-raising relay to be controlled. When the normally closed contacts of the bow-lowering relay cannot remain normally closed, or when the bow-raising enabling circuit fails and the normally open contacts of the bow-raising enabling relay cannot be closed, the bypass bow-raising measure is used to achieve emergency bow-raising.

[0073] On the basis of the above embodiments, further embodiments are provided as follows: Figure 2 Another control circuit diagram provided by the present invention is as follows: Figure 2 As shown, specifically including:

[0074] Optionally, the bow-lift enabling relay controls whether it is energized or not through a bow-lift enabling circuit, and the bow-lift enabling circuit includes:

[0075] Bow raising enabling relay K05;

[0076] The three-position switch operating position relay K07-1 at the same end as the bow raising enabling relay;

[0077] The three-position switch operating position relay K07-2 at the opposite end of the bow-lifting enabling relay;

[0078] Among them, the normally open contacts corresponding to the three-position switch operating position relay at the same end and the normally open contacts corresponding to the three-position switch operating position relay at the opposite end and the bow-lifting enabling relay are connected in series in the power supply circuit of the bow-lifting enabling relay.

[0079] Optionally, the bow-lift enabling circuit further includes:

[0080] The battery traction switch S21-1 at the same end as the bow lifting enabling relay, the battery traction switch at the same end and the bow lifting enabling relay, the normally open contacts corresponding to the control of the three-position switch operating position relay at the same end, the normally open contacts corresponding to the control of the three-position switch operating position relay at the opposite end and the battery traction switch S21-2 are connected in series in the power supply circuit of the bow lifting enabling relay.

[0081] It should be noted that the battery traction switch must be operated when the vehicle switches from pantograph traction to battery traction mode, switching to battery power. The high-voltage box's three-position switch switches the vehicle's high-voltage circuit operating state and has three positions: run, workshop, and grounded. When the vehicle is in operation, the three-position switch is in the run position, allowing the vehicle to raise the pantograph and draw high-voltage power. When in the workshop for maintenance, the three-position switch is in the workshop position, allowing the vehicle to draw high-voltage power by plugging into the workshop power supply. When performing maintenance on high-voltage equipment, the three-position switch must be in the grounded position to ground the vehicle's high-voltage circuit and ensure safety. The run position relay indicates the run position of the three-position switch. When the three-position switch is in the run position, the run position relay energizes, allowing the pantograph to be raised. The pantograph raise enable circuit integrates the pantograph raise enable condition into the run position signal of the three-position switches on both ends of the pantograph and the battery traction switch signals on both ends. The pantograph raise enable relay K05 energizes, allowing the pantograph to be raised, only when both three-position switches on the high-voltage box are in the run position and the vehicle is not in battery traction. When the pantograph is raised, the three-position switch at either end is placed in the non-operating position, and the pantograph automatically lowers; the operating vehicle at either end is switched to battery traction mode, and the pantograph automatically lowers.

[0082] Preferably, in the pantograph raising enabling circuit, the power supply is connected to the first end of the battery traction switch S21-1, the second end of the battery traction switch S21-1 is connected to the first end of the normally open contact corresponding to the operating position relay K07-1 of the high-voltage box three-position switch of the pantograph vehicle at this end, the second end of the normally open contact corresponding to the operating position relay K07-1 is connected to the first end of the battery traction switch S21-2 of the remote vehicle through the train line, the second end of the battery traction switch S21-2 is connected to the first end of the normally open contact corresponding to the operating position relay K07-2 of the high-voltage box three-position switch of the remote pantograph vehicle, the second end of the normally open contact corresponding to the operating position relay K07-2 of the high-voltage box three-position switch of the remote pantograph vehicle is connected to the first end of the pantograph raising enabling relay K05 of the local pantograph vehicle through the train line, and the second end of the pantograph raising enabling relay K05 is connected to the negative pole of the power supply.

[0083] Optionally, the pantograph raising relay is allowed to be energized or not through the pantograph raising bypass circuit, which includes:

[0084] Allow the pantograph raising relay K03;

[0085] The pantograph raising permission bypass switch S22 is connected in series with the pantograph raising permission relay in the power supply circuit of the pantograph raising permission relay.

[0086] It should be noted that in the bow raising bypass circuit, the power supply is connected to the first end of the bow raising bypass switch S22, the second end of the bow raising bypass switch S22 is connected to the first end of the bow raising relay K03, and the second end of the bow raising relay K03 is connected to the negative pole of the power supply.

[0087] Under normal circumstances, the pantograph-raising bypass switch is normally closed. If a fault causes the normally closed contacts of the pantograph-lowering relay and the normally open contacts of the pantograph-raising enable relay to fail to close, the pantograph-raising bypass switch S22 can be operated to bypass the normally closed contacts K02 and K05 of the pantograph-lowering relay, and then the pantograph-raising enable relay can be operated to raise the pantograph. This ensures that the train can raise the pantograph and return to the depot for maintenance, avoiding the need for additional vehicle rescue due to the inability to raise the pantograph.

[0088] Optionally, the pantograph raising relay and pantograph lowering relay are controlled to be energized or not by pantograph raising instruction circuit and pantograph lowering instruction circuit respectively;

[0089] The bow raising command circuit includes:

[0090] Bow raising relay K01;

[0091] Bow raising button S01, the bow raising button and the bow raising relay are connected in series in the power supply circuit of the bow raising relay;

[0092] The bow lowering command circuit includes:

[0093] Bow lowering relay K02;

[0094] The bow lowering button S02 is connected in series with the bow lowering relay in the power supply circuit of the bow lowering relay.

[0095] Optionally, the control circuit includes:

[0096] An input / output control module, which is used to receive a pantograph raising or lowering command from a signaling system of a rail vehicle in an unmanned driving mode;

[0097] The unmanned driving mode relay K30 for raising the bow is connected to the input and output control module, and the normally open contact corresponding to the control of the unmanned driving mode relay for raising the bow is connected in series with the bow raising relay in another power supply circuit of the bow raising relay;

[0098] The unmanned driving mode relay K29 for lowering the pantograph is connected to the input and output control module. The normally open contact corresponding to the control of the unmanned driving mode relay for lowering the pantograph is connected in series with the pantograph lowering relay in another power supply circuit of the pantograph lowering relay.

[0099] in,

[0100] When the unmanned driving mode relay for raising the pantograph receives an activation command from the driver's cab of the signal system, the unmanned driving mode relay for raising the pantograph is energized, and the normally open contact of the corresponding control is closed; when the unmanned driving mode relay for raising the pantograph does not receive an activation command from the driver's cab of the signal system or is manually activated by operating the driver's cab key, the unmanned driving mode relay for raising the pantograph is de-energized, and the normally open contact of the corresponding control is opened;

[0101] When the pantograph raising relay receives a pantograph raising command from the signal system and the normally open contact corresponding to the control of the unmanned driving mode relay for pantograph raising is closed, the pantograph raising relay is energized;

[0102] When the unmanned driving mode relay for lowering the pantograph receives the driver's cab activation command from the signal system, the unmanned driving mode relay for lowering the pantograph is energized and the normally open contact of the corresponding control is closed; when the driver's cab activation command is not received from the signal system or the driver's cab key is manually activated, the unmanned driving mode relay for lowering the pantograph is de-energized and the normally open contact of the corresponding control is opened;

[0103] The pantograph lowering relay is energized when it receives a pantograph lowering command from a signal system and the normally open contact corresponding to the control of the unmanned driving mode relay for pantograph lowering is closed.

[0104] Preferably, in the bow raising instruction circuit, the power supply is connected to the first end of the control contact corresponding to the bow raising button S01, the second end of the control contact corresponding to the bow raising button S01 is connected to the anode of the diode VD11, the cathode of the diode VD11 is connected to the first end of the bow raising relay K01, and the second end of the bow raising relay K01 is connected to the negative pole of the power supply.

[0105] Preferably, the input / output control module is connected to the first end of the normally open contact corresponding to the control of the unmanned driving mode relay K30, and the second end of the normally open contact corresponding to the control of the unmanned driving mode relay K30 is connected to the cathode of the diode VD11. The input / output control module and unmanned driving mode relay K30 are suitable for unmanned vehicles and do not require this circuit for manually driven vehicles. Logic conditions such as the pantograph selector switch and the driver's cab master control relay can also be incorporated in series according to actual needs.

[0106] It should be noted that in manual driving mode, when the driver presses the pantograph-raise button, the pantograph-raise relay K01 activates and energizes, generating a pantograph-raise signal. In unmanned driving mode, the input / output control module receives the pantograph-raise command from the signal system and issues a high-level pantograph-raise command signal. The normally open contact of the corresponding unmanned driving mode relay K30 closes, activating the pantograph-raise relay K01 and generating a pantograph-raise signal.

[0107] Preferably, in the pantograph lowering command circuit, the power supply is connected to the first terminal of the contact corresponding to the control of the pantograph lowering button S02, the second terminal of the contact corresponding to the control of the pantograph lowering button S02 is connected to the anode of another diode VD12, the cathode of diode VD12 is connected to the first terminal of the pantograph lowering relay K02, and the second terminal of the pantograph lowering relay K02 is connected to the negative terminal of the power supply; the input / output control module is connected to the first terminal of the normally open contact corresponding to the control of the unmanned driving mode relay K29, and the second terminal of the normally open contact corresponding to the control of the unmanned driving mode relay K29 is connected to the cathode of the diode. The input / output control module and unmanned driving mode relay K29 are suitable for unmanned vehicles and are not required for manually driven vehicles. Logic conditions such as the pantograph selector switch and the driver's cab master control relay can also be incorporated in series according to actual needs.

[0108] Preferably, the bow raising button is a self-resetting button, which is used for manually operating to issue a bow raising instruction; the bow lowering button is a self-resetting button, which is used for manually operating to issue a bow lowering instruction.

[0109] It should be noted that in manual driving mode, when the driver presses the lower pantograph button, pantograph lowering relay K02 activates, generating a pantograph lowering signal. In autonomous driving mode, the input / output control module receives the pantograph lowering command from the signal system and issues a high-level pantograph lowering command signal. The normally open contact of autonomous driving mode relay K29 closes, activating pantograph lowering relay K02 and generating a pantograph lowering signal. Both autonomous driving mode relays K30 and K29 ​​are activated when the vehicle is in autonomous driving mode.

[0110] Furthermore, regarding the pantograph raising control, when the above-mentioned manual mode or unmanned driving mode issues a pantograph raising command, the pantograph raising relay K01 is energized, and the normally open contact of the corresponding control is closed; when there is no pantograph lowering command, the pantograph lowering relay K02 loses power, and the normally closed contact of the corresponding control is closed; when the three-position switch is in the operating position and the non-battery traction mode, the pantograph raising enabling condition is met, the pantograph raising enabling relay K05 is energized, and the normally open contact of the corresponding control is closed, then the pantograph raising solenoid valve Y01 is energized, the pantograph raising holding relay K04 is energized, and the normally open contact of the corresponding control of the pantograph raising holding relay K04 is closed, the pantograph raising solenoid valve Y01 is self-energized, the pantograph air supply path is connected, and the pantograph is raised.

[0111] The normally closed contact corresponding to the control of the lowering relay K02 and the normally open contact corresponding to the control of the raising relay K01 are interlocked to avoid malfunction of the control circuit caused by adhesion or failure of closing of a single contact.

[0112] Furthermore, regarding the pantograph lowering control, the above-mentioned manual mode or unmanned driving mode issues a pantograph lowering command, the pantograph lowering relay K02 is energized, the normally closed contact of the corresponding control is disconnected, the pantograph raising holding circuit is de-energized, the pantograph raising solenoid valve Y01 is de-energized, the pantograph air supply path is cut off, and the pantograph is lowered by its own weight.

[0113] The present invention also provides a rail vehicle, comprising any of the above-mentioned rail vehicle pantograph control circuits.

[0114] The present invention utilizes conventional control devices, including a pantograph raising button, a pantograph lowering button, an input / output control module, a pantograph raising bypass switch, a pantograph raising relay, a pantograph lowering relay, a pantograph raising bypass relay, a pantograph raising enable relay, a pantograph raising hold relay, a zero-speed relay, and a pantograph raising solenoid valve, to achieve pantograph raising and lowering control. The control logic incorporates interlocking conditions for pantograph raising and lowering commands to prevent malfunctions caused by single-point faults, a pantograph raising bypass mechanism in the event of a relay fault, and a pantograph raising hold mechanism in the event of a loss of the pantograph raising enable during vehicle operation to prevent the vehicle from being disconnected. This achieves redundant control of the pantograph raising and lowering circuits for multiple faults, effectively reducing the pantograph raising control failure rate and improving vehicle availability. The present invention is highly applicable to both manually driven and fully automated driving platforms.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A pantograph control circuit for a railway vehicle, characterized in that: The control circuit comprises: a bow raising solenoid valve, which raises the bow when energized and lowers the bow when de-energized; A bow raising relay and a bow lowering relay, a normally open contact corresponding to the control of the bow raising relay, a normally closed contact corresponding to the control of the bow lowering relay, and the bow raising solenoid valve are connected in series in a power supply circuit of the bow raising solenoid valve; The pantograph raising relay is allowed, and the normally open contact corresponding to the control of the pantograph raising relay is connected in parallel with the normally closed contact corresponding to the control of the pantograph lowering relay.

2. The rail vehicle pantograph control circuit according to claim 1, characterized in that: The control circuit further includes: The bow raising enabling relay, the normally open contact corresponding to the control of the bow raising enabling relay, the normally open contact corresponding to the control of the bow raising relay, the normally closed contact corresponding to the control of the bow lowering relay and the bow raising solenoid valve are connected in series in the power supply circuit of the bow raising solenoid valve.

3. The rail vehicle pantograph control circuit according to claim 2, characterized in that: The normally open contact corresponding to the control of the pantograph raising enabling relay and the normally closed contact corresponding to the control of the pantograph lowering relay are connected in parallel with the normally open contact corresponding to the control of the pantograph raising allowing relay.

4. The rail vehicle pantograph control circuit according to claim 2, characterized in that: The control circuit further includes: A zero-speed relay, wherein the normally closed contact corresponding to the control of the zero-speed relay is connected in parallel with the normally open contact corresponding to the control of the bow-lifting enabling relay; in, The zero-speed relay is energized when the rail vehicle stops running, and the normally closed contact corresponding to the control of the zero-speed relay is disconnected; The zero-speed relay loses power when the rail vehicle is running, and the normally closed contact corresponding to the control of the zero-speed relay remains closed.

5. The rail vehicle pantograph control circuit according to claim 2, characterized in that: The bow-lift enabling relay controls whether it is energized or not through a bow-lift enabling circuit, and the bow-lift enabling circuit includes: The bow-lifting enabling relay; A three-position switch operating position relay at the same end as the bow-lift enabling relay; a three-position switch operating position relay at the opposite end of the bow-lift enabling relay; Among them, the normally open contacts corresponding to the three-position switch operating position relay at the same end and the normally open contacts corresponding to the three-position switch operating position relay at the opposite end are connected in series in the power supply circuit of the bow-lifting enabling relay.

6. The rail vehicle pantograph control circuit according to claim 5, characterized in that: The bow-lift enabling circuit further includes: The battery traction switch at the same end as the bow raising enabling relay, the battery traction switch at the same end and the bow raising enabling relay, the normally open contacts corresponding to the control of the three-position switch operating position relay at the same end, the normally open contacts corresponding to the control of the three-position switch operating position relay at the opposite end and the battery traction switch are connected in series in the power supply circuit of the bow raising enabling relay.

7. The rail vehicle pantograph control circuit according to claim 1, characterized in that: The pantograph raising relay is controlled to be energized or not through the pantograph raising bypass circuit, and the pantograph raising bypass circuit includes: The said bow raising relay is allowed; A pantograph-raising-allowing bypass switch is connected in series with the pantograph-raising-allowing relay in a power supply circuit of the pantograph-raising-allowing relay.

8. The rail vehicle pantograph control circuit according to claim 1, characterized in that: The pantograph raising relay and the pantograph lowering relay are controlled to be energized or not by pantograph raising instruction circuit and pantograph lowering instruction circuit respectively; The bow raising instruction circuit includes: the bow-lifting relay; A bow raising button, wherein the bow raising button and the bow raising relay are connected in series in a power supply circuit of the bow raising relay; The bow lowering instruction circuit includes: the bow-drop relay; A bow lowering button is connected in series with the bow lowering relay in the power supply circuit of the bow lowering relay.

9. The rail vehicle pantograph control circuit according to claim 8, characterized in that: The control circuit comprises: An input / output control module, the input / output control module being configured to receive a pantograph raising instruction or a pantograph lowering instruction from a signaling system of the rail vehicle in an unmanned driving mode; An unmanned driving mode relay for raising the bow, the unmanned driving mode relay for raising the bow being connected to the input / output control module, the normally open contact corresponding to the control of the unmanned driving mode relay for raising the bow being connected in series with the bow raising relay in another power supply circuit of the bow raising relay; An unmanned driving mode relay for lowering the pantograph, the unmanned driving mode relay for lowering the pantograph being connected to the input / output control module, the normally open contact corresponding to the control of the unmanned driving mode relay for lowering the pantograph being connected in series with the pantograph lowering relay in another power supply circuit of the pantograph lowering relay; in, When the unmanned driving mode relay for raising the pantograph receives an activation command from the driver's cab of the signal system, the unmanned driving mode relay for raising the pantograph is energized, and the normally open contact of the corresponding control is closed; when the unmanned driving mode relay for raising the pantograph does not receive an activation command from the driver's cab of the signal system or is manually activated by operating the driver's cab key, the unmanned driving mode relay for raising the pantograph is de-energized, and the normally open contact of the corresponding control is opened; When the pantograph raising relay receives a pantograph raising command from the signal system and the normally open contact corresponding to the control of the unmanned driving mode relay for pantograph raising is closed, the pantograph raising relay is energized; When the unmanned driving mode relay for lowering the pantograph receives the driver's cab activation command from the signal system, the unmanned driving mode relay for lowering the pantograph is energized and the normally open contact of the corresponding control is closed; when the driver's cab activation command is not received from the signal system or the driver's cab key is manually activated, the unmanned driving mode relay for lowering the pantograph is de-energized and the normally open contact of the corresponding control is opened; The pantograph lowering relay is energized when it receives a pantograph lowering command from a signal system and the normally open contact corresponding to the control of the unmanned driving mode relay for pantograph lowering is closed.

10. The rail vehicle pantograph control circuit according to claim 1, characterized in that: The control circuit further includes: The bow-lifting holding relay is connected in parallel with the bow-lifting solenoid valve, and the normally open contact corresponding to the control of the bow-lifting holding relay is connected in parallel with the normally open contact corresponding to the control of the bow-lifting relay.

11. A rail vehicle, characterized in that: The rail vehicle comprises the rail vehicle pantograph control circuit according to any one of claims 1 to 10.

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