A brake control circuit for a multiple-unit train and a multiple-unit train

Abstract

The present application provides a braking control circuit for a multiple-coupled train and a multiple-coupled train, which can utilize a first braking subcircuit, a second braking subcircuit, a third braking subcircuit or a fourth braking subcircuit provided on any trailer in the multiple-coupled train to perform the operation of alleviating the braking control of the multiple-coupled train, making the operation of performing the braking control of the multiple-coupled train simpler and more convenient; moreover, it is convenient and time-saving when the trains are coupled, and the redundancy of the braking control is increased. When a driver's cab at one end fails and braking control cannot be performed, braking control operations can be performed without crossing eight train carriages, which saves time and effort and increases availability.

Description

Technical Field

[0001] The present application relates to the technical field of rail vehicles, and in particular to a braking control circuit for a multiple-unit train and a multiple-unit train. Background Art

[0002] At present, a multiple-unit train refers to a rail vehicle formed by at least two trains connected head to tail in sequence. With the rapid development of rail transit vehicle construction, the traditional fixed marshaling operation cannot meet the flexible needs of passenger flow. If the rail vehicle is designed as a small formation, such as a train consisting of 4 carriages (referred to as 4-unit), it will be operated in a fixed formation of 4 units when the passenger flow is small, and in a multiple-unit train in the form of 4 units when the passenger flow is large. This can meet the flexible needs of passenger flow and achieve energy-saving and economic effects. The braking control mechanism of the multiple-unit train is generally set on the driver's cab of the trailer at the head of the multiple-unit train. When a fault occurs in the driver's cab of the trailer at one end, it will cause the defect that the braking control operation of the multiple-unit train is more troublesome. Summary of the invention

[0003] In order to solve the above problems, the purpose of the embodiments of the present application is to provide a braking control circuit for a multiple-unit train and a multiple-unit train.

[0004] In a first aspect, an embodiment of the present application provides a braking control circuit of a multiple-unit train, which is used for a multiple-unit train, wherein the multiple-unit train comprises: a first 4-unit set and a second 4-unit set; the first 4-unit set comprises: a first trailer, a second trailer and two motor cars arranged between the first trailer and the second trailer; the second 4-unit set comprises: a third trailer, a fourth trailer and two motor cars arranged between the third trailer and the fourth trailer; the braking control circuit of the multiple-unit train comprises: a first braking subcircuit arranged in a driver's cab of the first trailer, a second braking subcircuit arranged in a driver's cab of the second trailer, a third braking subcircuit arranged in a driver's cab of the third trailer, a fourth braking subcircuit arranged in a driver's cab of the fourth trailer, and a brake valve arranged on the motor car;

[0005] The first brake subcircuit, the second brake subcircuit, the third brake subcircuit and the fourth brake subcircuit are respectively provided with a brake relief relay;

[0006] The first braking subcircuit, the second braking subcircuit, the third braking subcircuit and the fourth braking subcircuit are respectively connected to the non-permanent busbar and the DC negative line terminal on the reconnected train;

[0007] The first brake subcircuit, brake valves respectively provided on two motor vehicles between the first trailer and the second trailer, and the second brake subcircuit are connected in sequence;

[0008] The third brake subcircuit, the brake valves respectively provided on the two motor vehicles between the third trailer and the fourth trailer, and the fourth brake subcircuit are connected in sequence;

[0009] The second brake subcircuit is connected to the third brake subcircuit via a coupler;

[0010] When the driver's cab of the second trailer is activated, the current output by the non-permanent busbar passes through the second braking sub-circuit, the brake valve provided on the motor vehicle between the first trailer and the second trailer, and the first braking sub-circuit in sequence, and then passes through the second braking sub-circuit for the second time. After passing through the second braking sub-circuit for the second time, it passes through the third braking sub-circuit, the fourth braking sub-circuit, and the brake valve provided on the motor vehicle between the third trailer and the fourth trailer in sequence, and then passes through the third braking sub-circuit for the second time. After passing through the third braking sub-circuit for the second time, the current enters the brake release relay of the second braking sub-circuit, so that the brake release relay of the second braking sub-circuit is energized to perform the operation of releasing the braking control of the multiplexed train.

[0011] In a second aspect, an embodiment of the present application further provides a multiple-unit train, comprising the multiple-unit train braking control circuit described in the first aspect above.

[0012] In the solutions provided in the first aspect to the second aspect of the embodiments of the present application, a first braking subcircuit, a second braking subcircuit, a third braking subcircuit and a fourth braking subcircuit are respectively arranged on the four trailers of the two marshalings of the multiple-unit train, and the first braking subcircuit, the second braking subcircuit, the third braking subcircuit and the fourth braking subcircuit are used to form a braking control circuit of the multiple-unit train; when the driver's cab of the second trailer is activated, the current output by the non-permanent busbar passes through the second braking subcircuit, the brake valves respectively arranged on the two motor cars between the first trailer and the second trailer, and the first braking subcircuit in sequence, and then passes through the second braking subcircuit for the second time, and then passes through the third braking subcircuit, the fourth braking subcircuit, and the brake valves arranged on the motor car between the third trailer and the fourth trailer in sequence, and then passes through the third braking subcircuit for the second time, and after passing through the third braking subcircuit for the second time, enters the brake release relay of the second braking subcircuit, so that The brake relief relay of the second brake subcircuit is energized to perform the operation of relieving the brake control of the multiplexed train. When the driver's cabs of the first, third and fourth trailers are activated, operations similar to those when the driver's cab of the second trailer is activated can also be performed. Compared with the method in the related art that only the brake control mechanism of the multiplexed train located in the driver's cab of the head trailer in the multiplexed train can be used to perform the brake relief operation, the first brake subcircuit, the second brake subcircuit, the third brake subcircuit or the fourth brake subcircuit provided on any trailer in the multiplexed train can be used to perform the operation of relieving the brake control of the multiplexed train, making the operation of performing the brake control of the multiplexed train simpler and more convenient; moreover, it is convenient and time-saving when the trains are coupled, and the redundancy of the brake control is increased. When the driver's cab at one end fails and the brake control cannot be performed, the brake control operation can be performed without crossing eight train cars, which saves time and effort and increases availability.

[0013] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A structural schematic diagram of a brake control circuit for a multiple-unit train provided in Example 1 of the present application is shown. DETAILED DESCRIPTION

[0016] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0017] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0018] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0019] At present, a multiple-unit train refers to a rail vehicle formed by at least two trains connected head to tail in sequence. With the rapid development of rail transit vehicle construction, the traditional fixed marshaling operation cannot meet the flexible needs of passenger flow. If the rail vehicle is designed as a small formation, such as a train consisting of 4 carriages (referred to as 4-unit), it will be operated in a fixed formation of 4 units when the passenger flow is small, and in a multiple-unit train in the form of 4 units when the passenger flow is large. This can meet the flexible needs of passenger flow and achieve energy-saving and economic effects. The braking control mechanism of the multiple-unit train is generally set on the driver's cab of the trailer at the head of the multiple-unit train. When a fault occurs in the driver's cab of the trailer at one end, it will cause the defect that the braking control operation of the multiple-unit train is more troublesome.

[0020] Based on this, this embodiment proposes a braking control circuit for a multiple-unit train and a multiple-unit train, by respectively arranging a first braking subcircuit, a second braking subcircuit, a third braking subcircuit and a fourth braking subcircuit on the four trailers of the two formations of the multiple-unit train, and utilizing the first braking subcircuit, the second braking subcircuit, the third braking subcircuit and the fourth braking subcircuit to form a braking control circuit for the multiple-unit train; when the driver's cab of the second trailer is activated, the current output by the non-permanent busbar passes through the second braking subcircuit, the brake valves respectively arranged on the two motor cars between the first trailer and the second trailer, the first braking subcircuit in sequence, and then passes through the second braking subcircuit for the second time, and after passing through the second braking subcircuit for the second time, it passes through the third braking subcircuit, the fourth braking subcircuit, the brake valves arranged on the motor car between the third trailer and the fourth trailer in sequence, and then passes through the third braking subcircuit for the second time, and then passes through the third braking subcircuit for the second time. After the subcircuit, it enters the brake relief relay of the second brake subcircuit, so that the brake relief relay of the second brake subcircuit is energized, and performs the operation of relieving the brake control of the multiple-coupled train. When the driver's cabs of the first, third and fourth trailers are activated, they can also perform operations similar to those when the driver's cab of the second trailer is activated. The first brake subcircuit, the second brake subcircuit, the third brake subcircuit or the fourth brake subcircuit provided on any trailer in the multiple-coupled train can be used to perform the operation of relieving the brake control of the multiple-coupled train, making the operation of executing the brake control of the multiple-coupled train simpler and more convenient; moreover, it is convenient and time-saving when the trains are coupled, and the redundancy of the brake control is increased. When the driver's cab at one end fails and the brake control cannot be performed, the brake control operation can be performed without crossing eight train cars, which saves time and effort and increases availability.

[0021] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and embodiments.

[0022] Example

[0023] This embodiment proposes a braking control circuit for a multiple-unit train, which is used for a multiple-unit train. The multiple-unit train includes: a first 4-unit set and a second 4-unit set; the first 4-unit set includes: a first trailer TMc1, a second trailer TMc2 and two motor cars Mp1 and Mp2 arranged between the first trailer and the second trailer; the second 4-unit set includes: a third trailer TMc3, a fourth trailer TMc4 and two motor cars Mp3 and Mp4 arranged between the third trailer and the fourth trailer.

[0024] The first 4-carriage set and the second 4-carriage set are coupled to form a 4+4 multiplex train.

[0025] The first trailer TMc1, the second trailer TMc2, the third trailer TMc3, and the fourth trailer TMc4 are respectively provided with a driver's cab.

[0026] Pantographs are provided on EMU Mp1, EMU Mp2, EMU Mp3 and EMU Mp4 respectively.

[0027] Unless otherwise specified, the multiple-unit train mentioned in this embodiment is a 4+4 multiple-unit train.

[0028] See also Figure 1 The structural schematic diagram of a multiple-unit train braking control circuit is shown. The multiple-unit train braking control circuit proposed in this embodiment includes: a first braking subcircuit 100 set in the driver's cab of the first trailer, a second braking subcircuit 200 set in the driver's cab of the second trailer, a third braking subcircuit 300 set in the driver's cab of the third trailer, a fourth braking subcircuit 400 set in the driver's cab of the fourth trailer, and a brake valve 700 set on the EMU.

[0029] The first braking sub-circuit 100 , the second braking sub-circuit 200 , the third braking sub-circuit 300 , and the fourth braking sub-circuit 400 are respectively provided with a braking release relay K51 .

[0030] The first braking subcircuit, the second braking subcircuit, the third braking subcircuit and the fourth braking subcircuit are respectively connected to the non-permanent busbar 500 and the DC negative line terminal 600 on the reconnected train.

[0031] The first brake sub-circuit 100, brake valves 700 respectively provided on two motor vehicles between the first trailer and the second trailer, and the second brake sub-circuit 200 are connected in sequence.

[0032] The third brake sub-circuit 300, the brake valves 700 respectively provided on the two motor vehicles between the third trailer and the fourth trailer, and the fourth brake sub-circuit 400 are connected in sequence.

[0033] The second braking sub-circuit is connected to the third braking sub-circuit via a coupler 800 .

[0034] In the case where the operation of relieving the braking control of the multiple-unit train is performed using the driver's cab of the trailer (the second trailer and the third trailer) located in the middle of the multiple-unit train, when the driver's cab of the second trailer is activated, the current output by the non-permanent busbar 500 passes through the second braking sub-circuit 200, the brake valve 700 provided on the motor vehicle between the first trailer and the second trailer, and the first braking sub-circuit 100 in sequence, and then passes through the second braking sub-circuit 200 for the second time. After passing through the second braking sub-circuit for the second time, it passes through the third braking sub-circuit 300, the fourth braking sub-circuit 400, and the brake valve 700 provided on the motor vehicle between the third trailer and the fourth trailer in sequence, and then passes through the third braking sub-circuit 300 for the second time. After passing through the third braking sub-circuit 300 for the second time, it enters the brake relief relay K51 of the second braking sub-circuit, so that the brake relief relay K51 of the second braking sub-circuit is energized to perform the operation of relieving the braking control of the multiple-unit train.

[0035] In one embodiment, the brake valve 700 refers to a gateway valve or a smart valve of the brake system.

[0036] After the operation of relieving the braking control of the multiple-unit train is performed, the braking control operation of the multiple-unit train will be released and the braking control operation will no longer be performed.

[0037] In order to perform the operation of relieving the braking control of the multiple-unit train, in the braking control circuit of the multiple-unit train proposed in this embodiment, the first braking sub-circuit 100, the second braking sub-circuit 200, the third braking sub-circuit 300 and the fourth braking sub-circuit 400 respectively further include: a circuit breaker F01, a first driver's cab activation relay K01, a second driver's cab activation relay K02, a third driver's cab activation relay K03, a coupling relay K04 and a brake valve 700.

[0038] The non-permanent busbar 500, the circuit breaker F01, the first driver's cab activating relay K01, the second driver's cab activating relay K02, the third driver's cab activating relay K03, the brake release relay K51, and the DC negative line terminal 600 are connected in sequence.

[0039] The coupling relay K04 is connected to the second cab activating relay K02, the third cab activating relay K03, and the coupler 800 respectively.

[0040] The brake valve 700 is respectively connected to the first driver's cab activating relay K01, the second driver's cab activating relay K02 and the brake valve of the motor vehicle.

[0041] The coupling relay K04 is in a closed state.

[0042] When the first trailer driver's cab, the second trailer driver's cab, the third trailer driver's cab and the fourth trailer driver's cab are not activated, the circuit breaker F01, the first driver's cab activation relay K01, the third driver's cab activation relay K03 and the brake release relay K51 are respectively in the disconnected state, and the second driver's cab activation relay K02 is in the closed state.

[0043] The interlocking relay K04 of the first brake sub-circuit 100 , the interlocking relay of the second brake sub-circuit 200 , the interlocking relay of the third brake sub-circuit 300 , and the interlocking relay of the fourth brake sub-circuit 400 are connected to each other.

[0044] When the circuit breaker F01 in the second braking subcircuit 200 is closed, the non-permanent busbar 500 outputs current to the second braking subcircuit 200, and the second braking subcircuit 200 is energized from the non-permanent busbar to activate the second trailer driver's cab to utilize the second braking subcircuit to perform the operation of relieving the braking control of the coupled train.

[0045] When the driver's cab of the second trailer is activated and the air brakes in the first 4-carriage group and the second 4-carriage group are in the released state, the first driver's cab activation relay and the third driver's cab activation relay in the second braking subcircuit are changed from the open state to the closed state, and the second driver's cab activation relay is changed from the closed state to the open state; and all brake valves in the braking control circuit of the multiplexed train are in the closed state.

[0046] The air brakes in the first 4-carriage set and the second 4-carriage set are both in the released state, which will cause all brake valves in the brake control circuit of the multiple-carriage train to be in the closed state to form a loop in the multiple-carriage train.

[0047] At this time, the first braking sub-circuit 100, the third braking sub-circuit 300 and the fourth braking sub-circuit 400 are not activated, so the opening and closing states of the first driver's cab activation relay K01, the second driver's cab activation relay K02 and the third driver's cab activation relay K03 in the first braking sub-circuit 100, the third braking sub-circuit 300 and the fourth braking sub-circuit 400 have not changed, and the first driver's cab activation relay K01 and the third driver's cab activation relay K03 are still in the disconnected state, and the second driver's cab activation relay K02 is in the closed state.

[0048] Specifically, the second braking subcircuit 200 performs an operation process of relieving the braking control of the multiple-unit train, including:

[0049] The current output by the non-permanent busbar 500 to the second brake sub-circuit 200 passes through the circuit breaker F01 of the second brake sub-circuit 200, and then passes through the first driver's cab activation relay K01 of the second brake sub-circuit 200 and the brake valve 700 of the second brake sub-circuit 200, the brake valve 700 provided on the motor vehicle between the first trailer TMc1 and the second trailer TMc2, the brake valve 700 of the first brake sub-circuit 100, the second driver's cab activation relay K02 of the first brake sub-circuit 100 and the coupling relay K04 of the first brake sub-circuit 100, the coupler between the second brake sub-circuit 200 and the third brake sub-circuit 300, and the coupling relay K04 of the fourth brake sub-circuit 400. 4. The second driver's cab activation relay K02 of the fourth brake subcircuit 400 and the brake valve 700 of the fourth brake subcircuit 400, the brake valve 700 installed on the EMU between the third trailer TMc3 and the fourth trailer TMc4, the brake valve 700 of the third brake subcircuit 300 and the second driver's cab activation relay K02 of the third brake subcircuit 300, the coupler 800 between the second brake subcircuit 200 and the third brake subcircuit 300, and the third driver's cab activation relay K03 of the second brake subcircuit enter the brake release relay K51 of the second brake subcircuit, so that the brake release relay K51 of the second brake subcircuit is energized to perform the operation of releasing the brake control of the multiplexed train.

[0050] The specific process of relieving the braking control of the multiple-unit train when the third trailer driver's cab is activated is similar to the specific process of relieving the braking control of the multiple-unit train when the second trailer driver's cab is activated, and will not be repeated here.

[0051] In the case where the operation of relieving the braking control of the multiple-unit train is performed using the driver's cab of the trailers (the first trailer and the fourth trailer) located at the head of the multiple-unit train, when the driver's cab of the first trailer is activated, the current output by the non-permanent busbar 500 passes through the first braking sub-circuit, the brake valves 700 respectively provided on the motor vehicle between the first trailer and the second trailer, and the second braking sub-circuit 200 in sequence, and then enters the third braking sub-circuit 300, and then passes through the brake valve provided on the motor vehicle between the third trailer and the fourth trailer and the fourth braking sub-circuit 400 in sequence, and then enters the third braking sub-circuit 300 again, and after passing through the third braking sub-circuit 300, it passes through the second braking sub-circuit 200 and the brake valve 700 provided on the motor vehicle between the first trailer and the second trailer in sequence, and enters the brake relief relay K51 of the first braking sub-circuit, so that the brake relief relay K51 of the first braking sub-circuit 100 is energized to perform the operation of relieving the braking control of the multiple-unit train.

[0052] Specifically, the first braking subcircuit 100 performs an operation process of relieving the braking control of the multiple-unit train, including:

[0053] When the circuit breaker F01 in the first braking subcircuit 100 is closed, the non-permanent busbar 500 outputs current to the first braking subcircuit 100, and the first braking subcircuit is powered by the non-permanent busbar 500 to activate the driver's cab of the first trailer to utilize the first braking subcircuit to perform the operation of relieving the braking control of the multiplexed train.

[0054] When the driver's cab of the first trailer is activated and the air brakes in the first 4-carriage group and the second 4-carriage group are in the released state, the first driver's cab activation relay and the third driver's cab activation relay in the first braking subcircuit are changed from the open state to the closed state, and the second driver's cab activation relay is changed from the closed state to the open state; and all brake valves in the braking control circuit of the multiplexed train are in the closed state.

[0055] At this time, the second braking sub-circuit 200, the third braking sub-circuit 300 and the fourth braking sub-circuit 400 are not activated, so the opening and closing states of the first driver's cab activation relay K01, the second driver's cab activation relay K02 and the third driver's cab activation relay K03 in the second braking sub-circuit 200, the third braking sub-circuit 300 and the fourth braking sub-circuit 400 have not changed, and the first driver's cab activation relay K01 and the third driver's cab activation relay K03 are still in the disconnected state, and the second driver's cab activation relay K02 is in the closed state.

[0056] The current output by the non-permanent busbar 500 to the first brake subcircuit 100 passes through the circuit breaker F01 of the first brake subcircuit 100, and then passes through the first cab activation relay K01 and the brake valve 700 of the first brake subcircuit, the brake valve 700 provided on the motor vehicle between the first trailer and the second trailer, the brake valve 700 of the second brake subcircuit 200, the second cab activation relay K02 of the second brake subcircuit 200 and the coupling relay K04 of the second brake subcircuit, the coupler 800 between the second brake subcircuit and the third brake subcircuit, the second cab activation relay K02 of the third brake subcircuit 300 and the brake valve K05 of the third brake subcircuit 300, and the brake valve K06 provided on the motor vehicle between the third trailer and the fourth trailer. The brake valve 700, the brake valve 700 of the fourth brake subcircuit, the second driver's cab activation relay K02 of the fourth brake subcircuit and the coupling relay K04 of the fourth brake subcircuit, and the coupler between the second brake subcircuit 200 and the third brake subcircuit 300, after passing through the coupler 800 between the second brake subcircuit and the third brake subcircuit, enter the coupling relay K04 of the first brake subcircuit 100, and after passing through the coupling relay of the first brake subcircuit 100 and the third driver's cab activation relay K03 of the first brake subcircuit in turn, enter the brake release relay K51 of the first brake subcircuit 100, so that the brake release relay K51 of the first brake subcircuit 100 is energized to perform the operation of releasing the braking control of the multiple-unit train.

[0057] The specific process of relieving the braking control of the multiple-unit train when the fourth trailer driver's cab is activated is similar to the specific process of relieving the braking control of the multiple-unit train when the first trailer driver's cab is activated, and will not be repeated here.

[0058] Here, the non-permanent busbar 500 is the positive electrode of the DC 110V power supply; the DC negative line terminal 600 is the negative electrode of the DC 110V power supply.

[0059] This embodiment also provides a multiple-unit train, comprising the multiple-unit train braking control circuit mentioned above.

[0060] In summary, the present embodiment proposes a braking control circuit for a multiple-unit train and a multiple-unit train, wherein a first braking subcircuit, a second braking subcircuit, a third braking subcircuit and a fourth braking subcircuit are respectively arranged on four trailers of two marshalings of the multiple-unit train, and the braking control circuit for the multiple-unit train is formed by using the first braking subcircuit, the second braking subcircuit, the third braking subcircuit and the fourth braking subcircuit; when the driver's cab of the second trailer is activated, the current output by the non-permanent busbar passes through the second braking subcircuit, the brake valves respectively arranged on two motor cars between the first trailer and the second trailer, and the first braking subcircuit in sequence, and then passes through the second braking subcircuit for the second time, and then passes through the third braking subcircuit, the fourth braking subcircuit, and the brake valves arranged on the motor car between the third trailer and the fourth trailer in sequence, and then passes through the third braking subcircuit for the second time, and then enters the brake release relay of the second braking subcircuit, The brake relief relay of the second brake subcircuit is energized to perform the operation of relieving the brake control of the multiplexed train. When the driver's cabs of the first, third and fourth trailers are activated, operations similar to those when the driver's cab of the second trailer is activated can also be performed. Compared with the method in the related art that only the brake control mechanism of the multiplexed train located in the driver's cab of the head trailer in the multiplexed train can be used to perform the brake relief operation, the first brake subcircuit, the second brake subcircuit, the third brake subcircuit or the fourth brake subcircuit provided on any trailer in the multiplexed train can be used to perform the operation of relieving the brake control of the multiplexed train, making the operation of performing the brake control of the multiplexed train simpler and more convenient; moreover, it is convenient and time-saving when the trains are coupled, and the redundancy of the brake control is increased. When the driver's cab at one end fails and the brake control cannot be performed, the brake control operation can be performed without crossing eight train cars, which saves time and effort and increases availability.

[0061] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A brake control circuit for a multiple-unit train, used for a multiple-unit train, the multiple-unit train comprising: The first 4-carriage group and the second 4-carriage group; The first four-carriage group includes: a first trailer, a second trailer and two motor cars arranged between the first trailer and the second trailer; the second four-carriage group includes: a third trailer, a fourth trailer and two motor cars arranged between the third trailer and the fourth trailer; characterized in that the braking control circuit of the multiple-carriage train includes: a first braking subcircuit arranged in the driver's cab of the first trailer, a second braking subcircuit arranged in the driver's cab of the second trailer, a third braking subcircuit arranged in the driver's cab of the third trailer, a fourth braking subcircuit arranged in the driver's cab of the fourth trailer, and a brake valve arranged on the motor car; The first brake subcircuit, the second brake subcircuit, the third brake subcircuit and the fourth brake subcircuit are respectively provided with a brake relief relay; The first braking subcircuit, the second braking subcircuit, the third braking subcircuit and the fourth braking subcircuit are respectively connected to the non-permanent busbar and the DC negative line terminal on the reconnected train; The first brake subcircuit, brake valves respectively provided on two motor vehicles between the first trailer and the second trailer, and the second brake subcircuit are connected in sequence; The third brake subcircuit, the brake valves respectively provided on the two motor vehicles between the third trailer and the fourth trailer, and the fourth brake subcircuit are connected in sequence; The second brake subcircuit is connected to the third brake subcircuit via a coupler; When the driver's cab of the second trailer is activated, the current output by the non-permanent busbar passes through the second braking subcircuit, the brake valve provided on the motor vehicle between the first trailer and the second trailer, and the first braking subcircuit in sequence, and then passes through the second braking subcircuit for the second time, and then passes through the third braking subcircuit, the fourth braking subcircuit, and the brake valve provided on the motor vehicle between the third trailer and the fourth trailer in sequence, and then passes through the third braking subcircuit for the second time, and then enters the brake release relay of the second braking subcircuit after passing through the third braking subcircuit for the second time, so that the brake release relay of the second braking subcircuit is energized, and the operation of releasing the braking control of the multiplexed train is performed; The first brake subcircuit, the second brake subcircuit, the third brake subcircuit and the fourth brake subcircuit respectively further include: a circuit breaker, a first driver's cab activation relay, a second driver's cab activation relay, a third driver's cab activation relay and a coupling relay; The non-permanent busbar, the circuit breaker, the first driver's cab activation relay, the second driver's cab activation relay, the third driver's cab activation relay, the brake release relay, and the DC negative line terminal are connected in sequence; The coupling relay is connected to the second cab activation relay, the third cab activation relay, and the coupler respectively; The brake valve is respectively connected to the first driver's cab activation relay, the second driver's cab activation relay and the brake valve of the motor vehicle; The linkage relay is in a closed state; When the first trailer cab, the second trailer cab, the third trailer cab and the fourth trailer cab are not activated, the circuit breaker, the first cab activation relay, the third cab activation relay and the brake release relay are respectively in an open state, and the second cab activation relay is in a closed state; When the circuit breaker in the second brake subcircuit is closed, the non-permanent busbar outputs current to the second brake subcircuit, the second brake subcircuit is powered from the non-permanent busbar, and the second trailer driver's cab is activated to utilize the second brake subcircuit to perform an operation of relieving the brake control of the multiple train; When the second trailer cab is activated and the air brakes in the first 4-carriage train and the second 4-carriage train are both in the released state, the first cab activation relay and the third cab activation relay in the second brake subcircuit are switched from the open state to the closed state, and the second cab activation relay is switched from the closed state to the open state; and all brake valves in the brake control circuit of the multiple train are in the closed state; The current output by the non-permanent busbar to the second braking subcircuit passes through the circuit breaker of the second braking subcircuit and then passes through the first cab activation relay of the second braking subcircuit and the brake valve of the second braking subcircuit, the brake valve provided on the motor vehicle between the first trailer and the second trailer, the brake valve of the first braking subcircuit, the second cab activation relay of the first braking subcircuit and the coupling relay of the first braking subcircuit, the coupler between the second braking subcircuit and the third braking subcircuit, the coupling relay of the fourth braking subcircuit, the second cab activation relay of the fourth braking subcircuit and the brake valve of the fourth braking subcircuit, the brake valve provided on the motor vehicle between the third trailer and the fourth trailer, the brake valve of the third braking subcircuit and the second cab activation relay of the third braking subcircuit, the coupler between the second braking subcircuit and the third braking subcircuit, and the third cab activation relay of the second braking subcircuit, and then enters the brake release relay of the second braking subcircuit, so that the brake release relay of the second braking subcircuit is energized to perform the operation of releasing the braking control of the multiplexed train.

2. The brake control circuit of a multiple train according to claim 1, characterized in that: The interlocking relay of the first brake sub-circuit, the interlocking relay of the second brake sub-circuit, the interlocking relay of the third brake sub-circuit, and the interlocking relay of the fourth brake sub-circuit are connected to each other.

3. The brake control circuit of a multiple train according to claim 2, characterized in that: When the driver's cab of the first trailer is activated, the current output by the non-permanent busbar passes through the first braking sub-circuit, the brake valves respectively provided on the motor car between the first trailer and the second trailer, and the second braking sub-circuit in sequence, and then enters the third braking sub-circuit, and then passes through the brake valve provided on the motor car between the third trailer and the fourth trailer and the fourth braking sub-circuit in sequence, and then enters the third braking sub-circuit again, and after passing through the third braking sub-circuit, passes through the second braking sub-circuit and the brake valve provided on the motor car between the first trailer and the second trailer in sequence, and enters the brake release relay of the first braking sub-circuit, so that the brake release relay of the first braking sub-circuit is energized to perform the operation of releasing the braking control of the multiplexed train.

4. The brake control circuit of a multiple train according to claim 3, characterized in that: When the circuit breaker in the first brake subcircuit is closed, the non-permanent busbar outputs current to the first brake subcircuit, the first brake subcircuit is powered from the non-permanent busbar, and the first trailer driver's cab is activated to use the first brake subcircuit to perform an operation of relieving the brake control of the multiple train; When the first trailer cab is activated and the air brakes in the first 4-carriage set and the second 4-carriage set are both in the released state, the first cab activation relay and the third cab activation relay in the first brake subcircuit are switched from the open state to the closed state, and the second cab activation relay is switched from the closed state to the open state; and all brake valves in the brake control circuit of the multiple train are in the closed state; The current output by the non-permanent busbar to the first brake subcircuit passes through the circuit breaker of the first brake subcircuit and then passes through the first cab activation relay and brake valve of the first brake subcircuit in sequence, the brake valve provided on the motor vehicle between the first trailer and the second trailer, the brake valve of the second brake subcircuit, the second cab activation relay of the second brake subcircuit and the coupling relay of the second brake subcircuit, the coupler between the second brake subcircuit and the third brake subcircuit, the second cab activation relay of the third brake subcircuit and the brake valve of the third brake subcircuit, and the brake valve provided on the motor vehicle between the third trailer and the fourth trailer. , the brake valve of the fourth brake subcircuit, the second driver's cab activation relay of the fourth brake subcircuit and the coupling relay of the fourth brake subcircuit, and the coupler between the second brake subcircuit and the third brake subcircuit, after passing through the coupler between the second brake subcircuit and the third brake subcircuit, enter the coupling relay of the first brake subcircuit, and after passing through the coupling relay of the first brake subcircuit and the third driver's cab activation relay of the first brake subcircuit in turn, enter the brake release relay of the first brake subcircuit, so that the brake release relay of the first brake subcircuit is energized to perform the operation of releasing the braking control of the multiple-unit train.

5. The brake control circuit of a multiple train according to any one of claims 1 to 4, characterized in that: The non-permanent busbar is the positive pole of the DC 110V power supply.

6. The brake control circuit of a multiple train according to any one of claims 1 to 4, characterized in that: The DC negative line terminal is the negative pole of the DC 110V power supply.

7. A multiple-unit train, characterized in that: The invention comprises the braking control circuit of a multiple-unit train as described in any one of claims 1 to 6.

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