CN112606876B - Urban rail train barrier detection device - Google Patents
Urban rail train barrier detection device Download PDFInfo
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- CN112606876B CN112606876B CN202011565089.8A CN202011565089A CN112606876B CN 112606876 B CN112606876 B CN 112606876B CN 202011565089 A CN202011565089 A CN 202011565089A CN 112606876 B CN112606876 B CN 112606876B
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- obstacle detection
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- obstacle
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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 vehicle trains
- B61L23/04—Control, warning, or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
- B61L23/041—Obstacle detection
Abstract
The invention provides a device for dealing with obstacle collision and detection in order to solve the problem of obstacle collision of an urban rail transit train in rail running and prevent accidents caused by collision.
Description
Technical Field
The invention relates to the technical field of urban rail trains, in particular to an urban rail train obstacle detection device.
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 transport. With the development of urban rail transit, considering 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 derailment and other major accidents are caused seriously, so that on-track 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 device for dealing with obstacle collision and detection, which meets the safe running requirement of a subway train.
The technical scheme adopted by the invention is that the urban rail train obstacle detection device comprises a control unit and an obstacle detection equipment unit, wherein the control unit is arranged in a carriage, and the obstacle detection equipment unit is arranged at the front end of a bogie at the head or tail of a vehicle; 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 instructing information transmission or control commands; the obstacle detection equipment unit comprises a fixing and height adjusting mechanism, a limiting and triggering 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 sleeve is limited by the wall face of the installation plate, the axial end face of the other end face of each long bolt cap or the gasket is limited by the end face of the long bolt cap, the other end of the buffer spring is axially limited by the wall surface of the mounting plate.
Furthermore, the non-metal end head is made of polytetrafluoroethylene.
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 device 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 with reference to fig. 1 to 5, and the invention discloses an urban rail train obstacle detection device, which 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 a train control and management system TCMS and a brake loop line 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 shaft walls of the two long sleeves 9, 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 buffer spring 10 is compressed, and the length of the linear bearing 8 and the parameters of the buffer spring 10 are determined by design calculation. 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 detection function of barrier detection equipment unit, 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 electric eddy current state signal, after the train takes place to derail, the eddy current sensor who detects the crossbeam lower part must contact the rail face, lead to the change of electric eddy current sensor eddy current value, effective change signal is detected to the main control unit, it derails to discern the vehicle, report train control and management system TCMS system immediately and trigger emergency braking loop line, apply emergency braking and avoid the train to take place bigger accident.
Claims (7)
1. Urban rail train barrier detection device, its characterized in that: the device 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 bogie at the head or the tail of a vehicle; the barrier detection device is directly or indirectly connected with the train control and management system TCMS and the brake loop line and is used for transmitting instruction information or control 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 by cables, the electrical connection interfaces of the obstacle detection equipment unit are respectively positioned on the limit trigger device and the resistance plate, the detection cross beam is arranged in parallel with the rail surface at intervals,
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, the fixing and height adjusting mechanisms comprise bogie mounting interface boards and obstacle detection unit mounting boards, and the bogie mounting interface boards and the obstacle detection unit mounting boards are connected by bolts and nuts; the buffering and vibration absorbing mechanism comprises 1 nonmetal end, 2 linear bearings, 2 long sleeves and 2 buffering springs, wherein the nonmetal end is fixedly connected with the detection cross beam by bolts and nuts, the end face of a hole in the nonmetal 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 nonmetal end, two groups of long bolts respectively penetrate through the long sleeves and are connected in series to the corresponding through holes of the mounting plate of the obstacle detection unit, the back of each through hole is locked by a nut, the axial end face of one end of each long sleeve is limited by the wall face of the mounting plate of the obstacle detection unit, and the axial end face of the other end of each long bolt is limited by the end face of a long bolt cap or a gasket, the other end of the buffer spring is axially limited by the wall surface of the mounting plate of the obstacle detection unit.
2. The urban rail train obstacle detection device according to claim 1, wherein: the bogie mounting interface board and the obstacle detection unit mounting plate structurally adopt a wedge-shaped tooth structure and are used for connecting and interlocking in the vertical direction.
3. The urban rail train obstacle detection device according to claim 1, wherein: the non-metal end is made of polytetrafluoroethylene.
4. The urban rail train obstacle detection device according to claim 1, wherein: the detection crossbeam is formed by bending a rectangular aluminum profile with the cross section size of 120 x 60 x 3, the whole detection crossbeam is in a symmetrical bending shape, the middle part of the detection crossbeam is forward convex, and the middle part of the detection crossbeam is in curve transition.
5. The urban rail train obstacle detection device according to claim 1, wherein: 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 behind the crossbeam wall keep the calculated distance that effectively triggers, 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 limit switch adopt 3 to get 2 voting mechanisms, after 2 groups limit switch triggered simultaneously, then trigger signal is effective.
6. The urban rail train obstacle detection device according to claim 1, wherein: the obstacle detection device unit employs contact-type collision detection.
7. The urban rail train obstacle detection device according to claim 1, wherein: the derailment detection device comprises 2 resistance plates, the resistance plates are connected with the control unit through cables, and the 2 resistance plates are respectively arranged at two ends of the lower part of the detection beam.
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| CN202011565089.8A CN112606876B (en) | 2020-12-25 | 2020-12-25 | Urban rail train barrier detection device |
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| CN202011565089.8A CN112606876B (en) | 2020-12-25 | 2020-12-25 | Urban rail train barrier detection device |
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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 |
| EP3299248A1 (en) * | 2016-09-21 | 2018-03-28 | ALSTOM Transport Technologies | An 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 |
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2020
- 2020-12-25 CN CN202011565089.8A patent/CN112606876B/en active Active
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 |
| EP3299248A1 (en) * | 2016-09-21 | 2018-03-28 | ALSTOM Transport Technologies | An 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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| 一起锅炉熄火事故的原因分析及处理;张大友 等;《电力安全技术》;20081231;第10卷(第10期);第39-40页 * |
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