CN112606877A - Urban rail train obstacle detection method - Google Patents
Urban rail train obstacle detection method Download PDFInfo
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- CN112606877A CN112606877A CN202011565097.2A CN202011565097A CN112606877A CN 112606877 A CN112606877 A CN 112606877A CN 202011565097 A CN202011565097 A CN 202011565097A CN 112606877 A CN112606877 A CN 112606877A
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- 238000001514 detection method Methods 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims description 38
- 238000010521 absorption reaction Methods 0.000 claims description 17
- 229910052755 nonmetal Inorganic materials 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 abstract description 9
- 230000003139 buffering effect Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
- B61L23/041—Obstacle detection
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention aims to solve the problem of barrier collision during the rail running of an urban rail transit train and provides a device and a method for responding to the barrier collision and detection meeting the safe running requirement of a subway train in order to prevent accidents caused by collision.
Description
Technical Field
The invention relates to the technical field of urban rail trains, in particular to a method for detecting obstacles of an urban rail train.
Background
With the acceleration of the urbanization process and the increasing demand of urban transportation, urban rail transit plays an increasingly important role in the field of public transportation. With the development of urban rail transit, in consideration of efficient operation and safety requirements, along with the great harm of obstacles on an operation line, when the obstacles meet, destructive collision occurs slightly, and serious accidents such as derailment occur seriously, so on-orbit obstacle detection research becomes necessary.
At present, a non-contact detection device is researched at home and abroad and used as a future direction of obstacle detection, but the non-contact detection device cannot be widely applied due to the reasons of limited prior art, insufficient reliability and the like, and meanwhile, the contact detection device is considered to be more outstanding in reliability in consideration of urban rail transit transportation characteristics, namely the running speed of a train is within the range of 0-100km/h, the reliability of a non-contact detection mode is insufficient, when an obstacle is light, the detection device can pop the obstacle out of a running rail surface through slight collision, and when the obstacle is heavy, a normal trigger mechanism can be started to trigger train braking, so that accidents are avoided or worsened.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for dealing with obstacle collision and detecting the safe running requirement of a subway train.
The invention adopts the technical scheme that the method for detecting the obstacle of the urban rail train comprises the steps that when a light-weight obstacle is encountered during the running of the train, the obstacle collides and contacts with a detection cross beam, the detection cross beam of the obstacle detection device and a buffering vibration absorption mechanism act together to buffer the collision force of the obstacle, meanwhile, the obstacle is ejected out of a running rail surface,
when a large obstacle is encountered during train running, the detection beam and the buffering vibration absorption mechanism of the obstacle detection equipment cannot absorb all collision force, after a buffer spring in the buffering vibration absorption mechanism is compressed to a set stroke, the wall surface of the detection beam contacts the limiting trigger device to generate an electric control trigger signal to trigger a brake loop to perform emergency braking, the control unit receives the signal and reports the signal to a Train Control and Management System (TCMS), and each control unit performs corresponding brake control to ensure the running safety.
Further, an urban rail train obstacle detection device is adopted, the detection device comprises a control unit and an obstacle detection equipment unit, the control unit is installed in the carriage, and the obstacle detection equipment unit is installed at the front end of a bogie at the head or the tail of the train; the barrier detection device is directly or indirectly connected with the train control and management system TCMS and the brake loop line and used for transmitting command information or controlling commands; the barrier detection equipment unit comprises a fixing and height adjusting mechanism, a limiting trigger device, a buffering and vibration absorbing mechanism, a detection cross beam, a resistance plate and a safe traction rope; the obstacle detection equipment unit is connected with the control unit through a cable, the electrical connection interfaces of the obstacle detection equipment unit are respectively positioned on the limiting trigger device and the resistance plate, and the detection cross beam and the rail surface are arranged in parallel at intervals.
Furthermore, the fixing and height adjusting mechanisms comprise two groups which are respectively arranged at the relative positions of two sides of the detection beam, the fixing and height adjusting mechanisms connect the bogie with the obstacle detection equipment unit body, and the fixing and height adjusting mechanisms comprise a bogie mounting interface board and an obstacle detection unit mounting board which are connected by bolts and nuts.
Furthermore, a kidney-shaped hole is formed in the mounting plate of the obstacle detection unit and used for adjusting the upper elevation and the lower elevation of equipment, and the structure of the mounting interface plate of the bogie and the mounting plate of the obstacle detection unit adopts a wedge-shaped tooth structure and is used for connecting and interlocking in the vertical direction.
Furthermore, the buffering and vibration absorbing mechanism comprises 1 non-metal end, 2 linear bearings, 2 long sleeves and 2 buffering and vibration absorbing springs, wherein the non-metal end is fixedly connected with the detection cross beam by bolts and nuts, the end face of an opening on the non-metal end is flush and embedded with the two linear bearings and is fastened by screws, the two long sleeves respectively penetrate through the linear bearings and protrude out of the installation end face of the linear bearings for a set distance, the outer wall of each long sleeve is in clearance fit with the inner wall of the linear bearing, the two buffering springs are respectively sleeved on the protruding shaft walls of the two long sleeves, one end of each long sleeve is axially limited by the end face of the linear bearing or the non-metal end, two groups of long bolts respectively penetrate through the sleeves and are connected in series to the corresponding through holes of the installation plate, the back faces of the through holes are locked by the nuts, the axial end face of one end of each, the other end of the buffer spring is axially limited by the wall surface of the mounting plate.
Furthermore, the detection beam is formed by bending a rectangular aluminum profile with the cross section size of 120 x 60 x 3, the whole detection beam is in a symmetrical bending shape, the middle part of the detection beam is forward convex, and the middle part of the detection beam is in curve transition.
Further, spacing trigger device contains 3 redundant limit switch of group, limit switch be provided with the gag lever post, spacing trigger device fix on barrier detection unit mounting panel, the gag lever post stretches out the device box, gag lever post and front end detect the rear wall face of crossbeam and keep the calculated distance of effectively triggering, when the barrier collision appears, detect the crossbeam and receive the impact force backward displacement, bump the gag lever post behind the compression buffer spring, trigger the barrier and detect the guarantee mechanism, 3 group's limit switch adopt 3 to get 2 voting mechanisms, after 2 group's limit switch is triggered simultaneously, then trigger signal is effective.
Further, the obstacle detecting apparatus unit employs contact collision detection.
Furthermore, the derailment detection device unit comprises 2 resistance plates, the resistance plates are connected with the control unit through cables, and the 2 resistance plates are respectively installed at two ends of the lower portion of the detection beam.
The invention has the beneficial effects that: the train obstacle detection method can bring operation safety guarantee for rail transit operating vehicles, avoid major accidents caused by collision, further avoid passenger casualties and major economic losses, guarantee the transportation safety of citizens and improve the economic benefits of operating units.
Drawings
Fig. 1 is a schematic diagram of a master controller motherboard of an urban rail train obstacle detection device according to the invention.
Fig. 2 is a block diagram of a derailment detection apparatus of the urban rail train obstacle detection apparatus according to the present invention.
Fig. 3 is a structural diagram of a buffering and damping mechanism of the urban rail train obstacle detection device.
Fig. 4 is a view in the direction of a-a of fig. 3.
Fig. 5 is a structure diagram of a limit trigger device of the urban rail train obstacle detection device.
The labels in the figure are: 1-fixing and height adjusting mechanism, 2-limiting trigger device, 3-buffering vibration absorption mechanism, 4-detecting beam, 5-resistance plate, 6-safe traction rope, 7-non-metal end, 8-linear bearing, 9-long sleeve, 10-buffer spring, 11-long bolt, 12-limiting switch and 13-limiting rod.
Detailed Description
The invention is further explained by combining the attached drawings 1 to 5, and the invention discloses a method for detecting the obstacle of an urban rail train, wherein the device of the method comprises a control unit and an obstacle detection device unit, wherein the control unit is arranged in a carriage, and the obstacle detection device unit is arranged at the front end of a locomotive bogie; the whole vehicle can adopt a double-set system and is respectively arranged at the corresponding positions of the vehicle head and the vehicle tail; the barrier detection device is directly or indirectly connected with the train TCMS and the brake loop wire and used for transmitting command information or controlling commands;
the obstacle detection equipment unit comprises a fixing and height adjusting mechanism 1, a limiting trigger device 2, a buffering and vibration absorbing mechanism 3, a detection cross beam 4, a resistance plate 5 and a safe traction rope 6; the obstacle detection equipment unit is connected with the control unit by a cable, and the electrical connection interfaces of the obstacle detection equipment unit are respectively positioned on the limiting trigger device 2 and the resistance plate 5.
The obstacle detection apparatus unit employs contact collision detection. When a light-weight obstacle is encountered during train running, the obstacle collides and contacts with the detection cross beam 4, the detection cross beam 4 of the obstacle detection equipment and the buffering vibration absorption mechanism 3 act together to buffer the collision force of the obstacle, and meanwhile, the obstacle is ejected out of the running rail surface, so that the running of the train is not influenced, and the safety of the train and the detection equipment is ensured.
When a large obstacle is encountered during train running, the detection beam 4 and the buffering vibration absorption mechanism 3 of the obstacle detection equipment cannot absorb all collision force, when the buffer spring 10 in the buffering vibration absorption mechanism 3 is compressed to a set stroke, the wall surface of the detection beam 4 contacts the limiting trigger device 2 to generate an electric control trigger signal to trigger the brake loop to perform emergency braking, the control unit receives the signal and reports the signal to a train TCMS system, and each control unit performs corresponding braking control to ensure the running safety;
the obstacle detection equipment unit has the derailment detection function, the main detection component is a resistance plate 5, the resistance plate 5 is connected with the control unit through a cable, the two resistance plates 5 are respectively arranged at two ends of the lower part of the detection beam 4, the detection beam 4 is parallel to the rail surface and keeps a set distance, when a train derails, the detection beam 4 inevitably contacts the rail surface and simultaneously contacts the resistance plates 5, the resistance plates 5 and the rail form conduction current, the main control unit detects a current signal, identifies the derailment of the train, and timely triggers emergency braking and reports a train TCMS system, so that the occurrence of more accidents of the train is avoided;
the control unit comprises a first power supply module, a second power supply module, a sensor input board, a sensor processing board, a DI dry contact board, a working back board, a structural chassis and the like, and the control unit has basic functions of obstacle collision detection and processing, contact type derailment detection, on-track detection, self diagnosis and fault protection, data recording, MVB, DI, EB dry contact, communication, redundancy, PTU and the like. The MVB, DI and EB dry contacts communicate with the TCMS to transmit instructions, state and fault data. The control unit is connected in series with the whole vehicle brake loop line through the EB dry contact point, and the obstacle detection system can be ensured to directly control the vehicle to brake emergently.
The host power supply module adopts a double hot standby redundancy architecture, and can realize the power supply redundancy function. When the single power supply fails, the standby power supply can be automatically switched, and the normal work of the system is not influenced during the failure switching. The fixing and height adjusting mechanism 1 of the obstacle detecting equipment unit comprises two groups which are respectively positioned at the relative positions of two sides of a detecting beam 4 and used as an intermediate link to effectively connect a bogie with the body of the obstacle detecting equipment unit, the single-group fixing and height adjusting mechanism 1 comprises a bogie mounting interface board and an obstacle detecting unit mounting board which are connected by bolts and nuts, the mounting board is provided with a kidney-shaped hole to realize the adjustment of the upper elevation and the lower elevation of the equipment, the interface board and the mounting board structurally adopt a wedge-shaped tooth structure to realize the connection interlocking in the vertical direction and ensure the firm connection of the bogie mounting interface board and the obstacle detecting unit mounting board,
the limit trigger device 2 of the obstacle detection equipment unit comprises 3 sets of redundant limit switches 12, the limit trigger device 2 is fixed on a mounting plate of the obstacle detection unit, a limit rod 13 extends out of a device box, a limit rod 13 of the limit switch 12 and the rear wall surface of a front end detection cross beam 4 keep an effective trigger calculation distance, when an obstacle collides, the detection cross beam 4 moves backwards under the impact force, the limit rod 13 of the limit switch 12 is touched after a buffer spring 10 is compressed, an obstacle detection guarantee mechanism is triggered, 3 sets of limit switches 12 adopt a 3-out-of-2 voting mechanism, and when 2 sets of limit switches 12 are triggered simultaneously (NC signals are disconnected and NO signals are closed), a trigger signal is effective.
The limit switch 12 is a general triggered function based switch such as a microswitch.
The mounting plate of the obstacle detection unit is provided with a limit switch 12 protection boss, the height of the boss is set for calculation, effective triggering of the limit switch 12 can be guaranteed under the condition of over-limit collision force, and meanwhile the limit switch 12 can be protected from collision damage of the detection beam 4;
the buffer and vibration absorption mechanism 3 of the obstacle detection equipment unit comprises two groups which are respectively positioned at the opposite positions of two sides of a detection beam 4 and are used as an intermediate link to effectively connect a mounting plate with the detection beam 4, the single group of buffer and vibration absorption mechanism 3 comprises 1 non-metal end 7, 2 linear bearings 8, 2 long sleeves 9, 2 buffer and vibration absorption springs, auxiliary fastening bolt nuts, gaskets and the like, the non-metal end 7 is fixedly connected with the detection beam 4 by adopting bolt nuts, the end surfaces of openings on the non-metal end 7 are flush and embedded with the two linear bearings 8 and are fastened by adopting screws, the two long sleeves 9 respectively penetrate through the linear bearings 8 and protrude out of the mounting end surfaces of the linear bearings 8 by a set distance, the outer wall of each long sleeve 9 and the inner wall of each linear bearing 8 are in clearance fit to reserve axial freedom, the linear bearings have axial sliding displacement on the long sleeves 9, and the two buffer springs 10 are respectively sleeved on the protruding, one end of the buffer spring 10 is axially limited by the end face of the linear bearing 8 or the nonmetal end 7, two groups of long bolts respectively penetrate through the sleeve and are connected in series to corresponding through holes of the mounting plate, the back of each through hole is locked through a nut, the axial end face of one end of the sleeve is limited by the wall face of the mounting plate, the axial end face of the other end of the sleeve is limited by the cap end face or a gasket of the long bolt 11, the axial end of the other end of the buffer spring 10 is limited by the wall face of the mounting plate, the structure of the buffer spring is that the linear bearing 8 is axially slid on the sleeve by the detection cross beam 4 and the. The buffering and vibration absorbing mechanism 3 realizes the buffering and vibration absorbing functions through the effective deformation of the non-metal end 7 and the compression of the spring, and the buffering and vibration absorbing capacity is determined by calculation.
The two ends of a detection beam 4 of the obstacle detection equipment unit are respectively fastened and connected with nonmetal end heads 7 on the two sides through bolts, the detection beam 4 is formed by bending a rectangular aluminum profile with the cross-sectional dimension of 120 x 60 x 3, the whole detection beam is in a symmetrical bending shape, the middle part is convexly provided with a size, the middle part adopts a curve transition, and the structural form meets the requirements of collision vibration absorption capacity and collision force transfer. The nonmetal end 7 is made of polytetrafluoroethylene, has enough strength and plasticity, is rigidly connected with the detection beam 4, and is deformed together under the action of collision, so that the collision force transfer and the balance of deformation and vibration absorption are effectively achieved.
The safe traction rope 6 of the obstacle detection equipment unit is used as a secondary protection mechanism of the train and the obstacle detection equipment, and after the obstacle detection equipment falls due to special factors, the hanging traction effect is achieved, and the equipment is prevented from falling on a rail surface to cause greater accidents.
This integrated derailment of barrier check out test set unit detects function, main determine module is eddy current sensor, eddy current sensor passes through cable junction with the control unit, two eddy current sensors are installed respectively in detecting crossbeam lower part position both ends, it is parallel with the rail face and keep setting for the distance to detect the crossbeam, main control unit real-time supervision eddy current state signal, after the train takes place the derailment, the eddy current sensor who detects the crossbeam lower part must contact the rail face, lead to eddy current sensor eddy current value to change, effective change signal is detected to the main control unit, it derails to discern the vehicle, report the train TCMS system immediately and trigger the emergency braking loop line, apply emergency braking and avoid the train to take place more accident.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011565097.2A CN112606877B (en) | 2020-12-25 | 2020-12-25 | Obstacle detection method for urban rail trains |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011565097.2A CN112606877B (en) | 2020-12-25 | 2020-12-25 | Obstacle detection method for urban rail trains |
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| CN112606877A true CN112606877A (en) | 2021-04-06 |
| CN112606877B CN112606877B (en) | 2022-05-24 |
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| CN202011565097.2A Expired - Fee Related CN112606877B (en) | 2020-12-25 | 2020-12-25 | Obstacle detection method for urban rail trains |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562028A (en) * | 2021-07-08 | 2021-10-29 | 中车南京浦镇车辆有限公司 | Contact type obstacle detection circuit and obstacle detection method for railway vehicle |
| CN115384569A (en) * | 2022-07-18 | 2022-11-25 | 合肥市轨道交通集团有限公司 | Rail vehicle and obstacle-removing and anti-derailment detection device and detection method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004927A (en) * | 2016-06-17 | 2016-10-12 | 吉林瑞电科技有限公司 | Obstacle detection device for rail vehicle |
| FR3056177A1 (en) * | 2016-09-21 | 2018-03-23 | Alstom Transport Technologies | OBSTACLE DETECTION DEVICE FOR A RAILWAY VEHICLE |
| KR101854051B1 (en) * | 2016-12-02 | 2018-05-03 | 현대로템 주식회사 | Sensor for obstacle detection apparatus |
| CN110682935A (en) * | 2019-08-22 | 2020-01-14 | 张明宇 | Integrated obstacle detection and derailment detection system |
-
2020
- 2020-12-25 CN CN202011565097.2A patent/CN112606877B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004927A (en) * | 2016-06-17 | 2016-10-12 | 吉林瑞电科技有限公司 | Obstacle detection device for rail vehicle |
| FR3056177A1 (en) * | 2016-09-21 | 2018-03-23 | Alstom Transport Technologies | OBSTACLE DETECTION DEVICE FOR A RAILWAY VEHICLE |
| KR101854051B1 (en) * | 2016-12-02 | 2018-05-03 | 현대로템 주식회사 | Sensor for obstacle detection apparatus |
| CN110682935A (en) * | 2019-08-22 | 2020-01-14 | 张明宇 | Integrated obstacle detection and derailment detection system |
Non-Patent Citations (1)
| Title |
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| 张大友 等: "一起锅炉熄火事故的原因分析及处理", 《电力安全技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562028A (en) * | 2021-07-08 | 2021-10-29 | 中车南京浦镇车辆有限公司 | Contact type obstacle detection circuit and obstacle detection method for railway vehicle |
| CN115384569A (en) * | 2022-07-18 | 2022-11-25 | 合肥市轨道交通集团有限公司 | Rail vehicle and obstacle-removing and anti-derailment detection device and detection method thereof |
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| CN112606877B (en) | 2022-05-24 |
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