Train Anti-Collision System for Rail Transit Test Track

Abstract

The present invention provides a train anti-collision system for a rail transit test track, which includes an on-vehicle anti-collision device and a trackside barrier and control device. When the train needs to operate in manual driving mode on the test track, the control center remotely controls the trackside hydraulic barriers at both ends of the test track to rise. At the same time, the driver operates the anti-collision bypass switches in the cabs at both ends to the non-bypass position. The train can operate within the range between the trackside hydraulic barriers at both ends. Once the train fails to stop in time due to the driver's fatigue or inattentiveness, when the train crosses the trackside hydraulic barrier, the on-vehicle anti-collision device touches the trackside hydraulic barrier, causing the on-vehicle anti-collision device to cut off the emergency braking circuit of the train. The train applies emergency braking and safely stops in front of the buffer stop at the end of the test track without colliding with the buffer stop on the test track.

Description

Technical Field

[0001] The present invention relates to the field of rail transit, and specifically, to a train anti-collision system for a rail transit test track. Background Art

[0002] Trains operate in manual mode on the test track. At this time, the signal system is bypassed and cut off, and the train relies only on the driver for safety protection. However, once there are problems such as the driver's fatigue operation or inattentiveness, there is a high probability of a collision accident caused by the train's failure to stop in time.

[0003] To solve the occurrence of train collision accidents caused by human factors such as the driver's fatigue operation or inattentiveness when the train operates in manual mode on the test track, the present invention provides a train anti-collision system for a rail transit test track, which has high reliability and is simple and easy to implement. Summary of the Invention

[0004] Aiming at the defects in the prior art, the purpose of the present invention is to provide a train anti-collision system for a rail transit test track.

[0005] According to a train anti-collision system for a rail transit test track provided by the present invention, it includes an on-vehicle anti-collision device, a trackside barrier and a control device. The on-vehicle anti-collision device mainly consists of an anti-collision relay, an anti-collision bypass switch, an anti-collision circuit breaker and an undercarriage jumper device. The trackside barrier and the control device mainly consist of a trackside hydraulic barrier, a rainproof control box, a control terminal and a control cable.

[0006] Preferably, the normally open contact of the anti-collision relay in the on-vehicle anti-collision device is connected to the train emergency braking circuit. When the contact of the anti-collision relay is disconnected, the train emergency braking circuit is cut off, and the train applies emergency braking to stop. When the contact of the anti-collision relay is closed, the train emergency braking circuit returns to normal, and the train maintains normal operation.

[0007] Preferably, the contact of the anti-collision bypass switch in the on-vehicle anti-collision device is connected in parallel with the normally open contact of the anti-collision relay to the train emergency braking circuit. When the bypass switch contact is closed, the normally open contact of the anti-collision relay is bypassed. When the bypass switch contact is disconnected, the bypass of the normally open contact of the anti-collision relay is removed.

[0008] Preferably, for the anti-collision relay in the on-vehicle anti-collision device, its coil drive circuit is connected to the undercarriage jumper device. When the undercarriage jumper is disconnected, the anti-collision relay loses power and drops. When the undercarriage jumper is restored, the anti-collision relay gets power and pulls up.

[0009] Preferably, the underbody jumper device in the vehicle anti-collision device is installed on the side of the underbody of the train driver's cab, on the same side as the trackside hydraulic barrier, and its contour does not exceed the vehicle gauge. The jumper height meets the requirement of mutual contact with the trackside hydraulic barrier.

[0010] Preferably, for the trackside barrier and control device, the trackside hydraulic barrier is installed on the same side as the underbody jumper device on the test track, and the distance from the end stop of this end of the test track is greater than the emergency braking protection distance of the train. Different emergency braking protection distances are calculated according to different train running speed grades.

[0011] Preferably, for the trackside barrier and control device, when the trackside hydraulic barrier is erected, the top structure of the barrier can interact with the underbody jumper device to hang up the jumper of the underbody jumper device, and when the trackside hydraulic barrier falls, any part of it will not affect the train operation.

[0012] Preferably, for the trackside barrier and control device, its control terminal is placed in the control center, and the terminal interface can display the current state of the trackside hydraulic barrier, and provide erection and lowering operation buttons on the display interface. After the operation, the command can be remotely sent to the rainproof control box to control the erection or lowering of the trackside hydraulic barrier.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The structure of the present invention is reasonable, the design is ingenious and the effect is remarkable;

[0015] 2. When the train runs on the test track in the manual driving mode, once an accident occurs and the train fails to stop in time and passes through the position where the trackside hydraulic barrier is located, the train can automatically apply emergency braking to stop, and will not collide with the end stop of the test track, effectively preventing the occurrence of train collision accidents caused by human reasons such as driver fatigue operation or inattention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:

[0017] Figure 1 is the schematic diagram of the vehicle anti-collision device.

[0018] Figure 2 is the structural diagram of the underbody jumper device.

[0019] Figure 3 is the schematic diagram of the trackside barrier and control device.

[0020] Figure 4 is the structural diagram of the trackside hydraulic barrier.

[0021] As shown in the figure:

[0022] Anti-collision bypass switch 1

[0023] Anti-collision relay 2

[0024] Anti-collision circuit breaker 3

[0025] Jumper device 4

[0026] Trackside hydraulic barrier 5

[0027] Rainproof control box 6

[0028] Control board 7

[0029] Converter 8

[0030] Switching power supply 9

[0031] Air switch 10

[0032] Control center 11 Detailed implementation mode

[0033] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all belong to the protection scope of the present invention.

[0034] As Figures 1 to 4 shown, a train anti-collision system for a rail transit test line according to the present invention includes an on-vehicle anti-collision device, a trackside barrier and a control device. When the train needs to run on the test line in manual driving mode, the dispatcher operates the trackside hydraulic barrier to automatically raise at the control center, and the driver operates the anti-collision bypass switch to activate the on-vehicle anti-collision device. When an accident occurs and the train fails to stop in time, when it passes by the trackside hydraulic barrier during operation, the undercarriage jumper of the on-vehicle anti-collision device is hung up, the anti-collision relay loses power and drops, and its normally open contact disconnects the train emergency braking circuit, and the train stops emergently to prevent collision with the end stop of the test line; when the train is running on the main line or running on the test line in other modes, the dispatcher operates the trackside hydraulic barrier to automatically lower, and the driver operates the anti-collision bypass switch to bypass the on-vehicle anti-collision device, and the train can run normally without being affected by the test line anti-collision system.

[0035] The on-vehicle anti-collision device mainly consists of an anti-collision relay, an anti-collision bypass switch, an anti-collision circuit breaker, and an underbody jumper device. The trackside barrier and control device mainly consists of a trackside hydraulic barrier, a rainproof control box, a control terminal, and a control cable. The rainproof control box includes a control board, an RS232 to 485 converter, a switching power supply, and an air switch. The air switch provides power protection for the circuits inside the rainproof control box and the trackside hydraulic barrier. The switching power supply provides power to the control board. The RS232 to 485 converter is used to receive instructions from the control center and forward them to the control board. The control board outputs raising and lowering instructions to the trackside hydraulic barrier and collects the status of the trackside hydraulic barrier and feeds it back to the control terminal through the RS232 to 485 converter. The control terminal is placed in the control center. The terminal interface can display the current status of the trackside hydraulic barrier and provides raising and lowering operation buttons on the display interface. After the operation, the command can be remotely sent to the rainproof control box to control the raising or lowering of the trackside hydraulic barrier. The normally open contact of the anti-collision relay in the on-vehicle anti-collision device is connected to the train emergency braking circuit. When the contact of the anti-collision relay is disconnected, the train emergency braking circuit is cut off, and the train applies emergency braking to stop. When the contact of the anti-collision relay is closed, the train emergency braking circuit returns to normal, and the train maintains normal operation.

[0036] The contact of the anti-collision bypass switch in the on-vehicle anti-collision device is connected in parallel with the normally open contact of the anti-collision relay to the train emergency braking circuit. When the bypass switch contact is closed, the normally open contact of the anti-collision relay is bypassed. When the bypass switch contact is disconnected, the bypass of the normally open contact of the anti-collision relay is removed. For the anti-collision relay in the on-vehicle anti-collision device, its coil drive circuit is connected to the underbody jumper device. When the underbody jumper is disconnected, the anti-collision relay loses power and drops. When the underbody jumper is restored, the anti-collision relay gets powered and pulls up.

[0037] The underbody jumper device in the on-vehicle anti-collision device is installed on the side of the train driver's cab underbody, on the same side as the trackside hydraulic barrier. Its contour does not exceed the vehicle gauge, and the jumper height meets the requirement of mutual contact with the trackside hydraulic barrier.

[0038] The trackside hydraulic barrier of the trackside barrier and control device is installed on the same side as the underbody jumper device on the test track. The distance from the end stop of the test track at this end is greater than the train emergency braking protection distance, and different emergency braking protection distances are calculated according to different train running speed grades. When the trackside hydraulic barrier is raised, the top structure of the barrier can interact with the underbody jumper device to hang up the jumper of the underbody jumper device. When the trackside hydraulic barrier is lowered, any part of it will not affect the train operation. The control terminal of the trackside barrier and control device is placed in the control center. The terminal interface can display the current status of the trackside hydraulic barrier and provides raising and lowering operation buttons on the display interface. After the operation, the command can be remotely sent to the rainproof control box to control the raising or lowering of the trackside hydraulic barrier.

[0039] As Figure 1 , Figure 3 described above, the present invention provides an anti-collision system for a rail transit test track, which includes an on-vehicle anti-collision device, a trackside barrier and a control device. When a train runs on the test track in the manual driving mode, the dispatcher operates the trackside barrier to automatically erect at the control center, and the driver operates the anti-collision bypass switch to activate the on-vehicle anti-collision device. When an accident occurs and the train fails to stop in time and continues to run past the trackside barrier, the underbody jumper wire of the on-vehicle anti-collision device is hung up, the anti-collision relay loses power and drops, and its normally open contact disconnects the train emergency braking circuit, causing the train to stop by emergency braking and not collide with the test track bumper; when the train runs on the main line or runs on the test track in other modes, the dispatcher operates the trackside hydraulic barrier to automatically drop, and the driver operates the anti-collision bypass switch to bypass the on-vehicle anti-collision device, and the train can operate normally without being affected by the anti-collision system of the test track.

[0040] Taking a certain train about to run on the test track in the manual driving mode as an example, the driver applies to the control center to activate the anti-collision system of the test track. The dispatcher at the control center operates the control terminal to send a command to erect the trackside hydraulic barriers at both ends of the test track. The trackside hydraulic barriers immediately erect. At the same time, the driver operates the anti-collision bypass switches in both driver's cabs to the non-bypass position. When the driver receives the information that the trackside hydraulic barriers at both ends have been erected from the control center, the driver manually drives the train to start running on the test track, and the running range does not exceed the range of the trackside hydraulic barriers at both ends.

[0041] During the operation of this train on the test track, if an accident occurs and the train fails to stop at the trackside hydraulic barrier and continues to run forward, the trackside hydraulic barrier will hang up the jumper wire of the on-vehicle jumper device, the on-vehicle anti-collision relay loses power and drops, and the train automatically applies emergency braking to stop, without colliding with the end bumper of the test track, reliably protecting the safety of personnel and equipment.

[0042] After the operation of this test track is completed, the driver applies to the control center to deactivate the anti-collision system of the test track. The dispatcher at the control center operates the control terminal to send a command to drop the trackside hydraulic barriers at both ends of the test track. The trackside hydraulic barriers immediately drop. At the same time, the driver operates the anti-collision bypass switches in both driver's cabs to the bypass position, and the train resumes normal operation in the non-manual driving mode.

[0043] When the train runs on the test track in the manual driving mode, the on-vehicle ATC system is bypassed, and the train operation protection is only provided manually by the driver, the present invention can make the train stop within a safe range and not collide with the end bumper of the test track by setting trackside barriers at certain positions on the test track and touching them with the on-vehicle anti-collision device, and can effectively prevent the occurrence of train collision accidents caused by driver fatigue operation or inattentiveness.

[0044] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0045] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A train anti-collision system for a rail transit test line, characterized in that It includes an on-vehicle anti-collision device, a trackside barrier and a control device, where: The on-vehicle anti-collision device includes an anti-collision relay, an anti-collision bypass switch, an anti-collision circuit breaker and an underbody jumper device; one end of the coil of the anti-collision relay is connected to the secondary of the anti-collision circuit breaker, and the other end is connected to the negative pole of the power supply through the underbody jumper device; The anti-collision bypass switch and the normally open contact of the anti-collision relay are connected in parallel and then connected to the train emergency braking circuit; The trackside barrier and control device includes a trackside hydraulic barrier that can automatically rise and fall. When the trackside hydraulic barrier rises, it can disconnect the jumper of the underbody jumper device when the underbody jumper device passes through the trackside hydraulic barrier.

2. The train anti-collision system for the rail transit test line according to claim 1, wherein, The normally open contact of the anti-collision relay is connected in series to the train emergency braking circuit. When the relay loses power and drops, the normally open contact disconnects the train emergency braking circuit.

3. The train anti-collision system for the rail transit test line according to claim 1, wherein The anti-collision bypass switch is in the train emergency braking circuit and forms a parallel relationship with the normally open contact of the anti-collision relay. When the switch contact is closed, the normally open contact of the anti-collision relay is bypassed.

4. The train anti-collision system for the rail transit test line according to claim 1, characterized in that, The underbody jumper device is installed on the side of the driver's cab underbody, on the same side as the trackside hydraulic barrier, and its contour does not exceed the vehicle gauge; when the train passes above the trackside hydraulic barrier, the underbody jumper device can contact the trackside barrier to reliably disconnect the underbody jumper.

5. The train anti-collision system for the rail transit test track according to claim 1, wherein, The trackside hydraulic barrier is installed on the same side as the underbody jumper device on the test track, and the distance from the end stop of this end of the test track is greater than the train emergency braking protection distance. Different emergency braking protection distances are calculated according to different train running speed grades.

6. The train anti-collision system for the rail transit test track according to claim 1, wherein When the trackside hydraulic barrier is erected, the top structure of the barrier interacts with the underbody jumper device to hang up the jumper of the underbody jumper device, and when the trackside hydraulic barrier falls, any part of it does not affect the train operation.

7. The train anti-collision system for the rail transit test line according to claim 1, characterized in that The trackside barrier and control device also includes a rainproof control box and a control terminal, where: The rainproof control box includes a control board, an RS232 to 485 converter, a switching power supply and an air switch. The air switch provides power protection for the circuits in the rainproof control box and the trackside hydraulic barrier. The switching power supply provides power to the control board. The RS232 to 485 converter is used to receive instructions from the control center and forward them to the control board. The control board outputs erection and lowering instructions to the trackside hydraulic barrier and collects the status of the trackside hydraulic barrier and feeds it back to the control terminal through the RS232 to 485 converter.

8. The train anti-collision system for the rail transit test track according to claim 7, characterized in that, The control terminal is placed in the control center. The terminal interface can display the current status of the trackside hydraulic barrier and provide erection and lowering operation buttons on the display interface. After the operation, the command can be remotely sent to the rainproof control box to control the trackside hydraulic barrier to erect or lower.

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