CN107253454B - Movable contact net safety interlocking device - Google Patents
Movable contact net safety interlocking device Download PDFInfo
- Publication number
- CN107253454B CN107253454B CN201710573270.5A CN201710573270A CN107253454B CN 107253454 B CN107253454 B CN 107253454B CN 201710573270 A CN201710573270 A CN 201710573270A CN 107253454 B CN107253454 B CN 107253454B
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- China
- Prior art keywords
- movable contact
- contact net
- transition section
- safety
- travel switch
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/02—Details
- B60M1/04—Mechanical protection of line; Protection against contact by living beings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a movable contact net safety interlocking device which is applicable to a movable contact net and comprises a transition section insulating device, a safety control device and an automatic alarm device; the transition section insulating device, the safety control device and the automatic alarm device are controlled in an electric interlocking way. The transition section insulating device is provided with a Z-shaped structure and is positioned between two sections of movable contact networks right above the track; the safety control device locks the overhead contact system when the two-section movable overhead contact system is swung out of place or is swung out of overrun, so that overrun is prevented; if the swing out exceeds the limit, the isolating switch cannot be operated, and the automatic alarm device can carry out audible and visual alarm. In the working process of the movable contact net, the movable contact net safety interlocking device can effectively avoid the short circuit phenomenon caused by the fact that two sections (or more than two sections) of movable contact net swing out of overrun, and has a protective effect on the use safety of power supply equipment and the personal safety of field acting personnel, so that unnecessary risks are avoided.
Description
Technical Field
The invention relates to the field of movable contact networks, in particular to a movable contact network safety interlocking device.
Background
The movable contact net is a device for supplying power for the entrance and exit of rail transit vehicles into and out of a maintenance warehouse and the debugging in the maintenance warehouse. In order to realize the overhaul with or without electricity under different conditions at different positions of a certain overhaul strand, at least two sections of movable contact networks are generally arranged above the same overhaul strand. However, when the movable contact net swings to the position right above the maintenance track, the travel switch for detecting the swing out of the movable contact net fails, or the contact net continues to swing due to manual misoperation, so that the overrun phenomenon occurs, and two sections (or more than two sections) of contact net which are not contacted originally are in direct contact. When a movable contact net of a certain overhaul strand is powered on, the contact net is short-circuited, the power supply equipment is seriously damaged, and the personal safety of field operators is even threatened.
Disclosure of Invention
Therefore, the invention provides the movable contact net safety interlocking device, which effectively solves the technical problem that the movable contact net swings out of the overrun.
According to one aspect of the invention, there is provided a safety interlock device for a mobile catenary, adapted to a mobile catenary, comprising a transitional segment insulation device, a safety control device and an automatic alarm device; the transition section insulating device, the safety control device and the automatic alarm device are controlled in an electric interlocking way.
Optionally, according to the mobile contact net safety interlocking device of the invention, the mobile contact net is fixed on a stand column at one side of a track, and is provided with two swing arms with equal length connected with the stand column, the other ends of the swing arms are provided with insulators with equal length, and a busbar is connected between the other ends of the insulators; different mobile catenary have swing arms and busbars of different lengths.
Optionally, according to the movable contact net safety interlocking device of the invention, the transition section insulating device consists of a composite insulator between the bus bars at two sides and opposite ends of the bus bars, and has a Z-shaped structure.
Alternatively, according to the safety interlocking device of the mobile contact network, the other ends of the two side buses are provided with an overlapping area with the bus of the mobile contact network, and the length of the bus overlapping area is smaller than that of the bus of the single side of the transition section insulating device.
Optionally, according to the mobile contact net safety interlocking device of the invention, the transition section insulating device is fixedly arranged right above the track and is positioned between two sections of mobile contact net.
Optionally, according to the movable contact net safety interlocking device of the invention, the transition section insulating device is arranged at one end of the telescopic mechanism, and the other end of the transition section insulating device is fixed on the upright post at one side of the track; when the device works, the telescopic mechanism stretches out to move the transition section insulating device to the position right above the track and is positioned between the two sections of movable contact networks.
Optionally, the safety interlocking device of the movable contact net comprises an external collision block and a combined module, wherein the combined module consists of an electromagnetic lock module, an internal collision block sum, a travel switch, a reset spring and an electric insulation layer.
Optionally, the movable contact net safety interlocking device according to the invention comprises an in-place travel switch and an overrun travel switch; the electrical insulation layer is located between the combined module and the transition piece insulation device buss, the electrical insulation layer being located between the outer bump and the mobile catenary buss.
Optionally, according to the safety interlocking device for the mobile contact network, the safety control device is located in a bus bar overlapping area, wherein the external collision block and the combined module are respectively and fixedly installed at the tail ends of the bus bars at two sides of the bus bars of the mobile contact network and the transition section insulating device in a welding and bolting mode.
Optionally, according to the safety interlocking device for the movable contact network, when the movable contact network swings out to work in place, the external collision block abuts against the combined module and is located on the outer side of the combined module.
The invention discloses a movable contact net safety interlocking device which is applicable to a movable contact net and comprises a transition section insulating device, a safety control device and an automatic alarm device; the transition section insulating device, the safety control device and the automatic alarm device are controlled in an electric interlocking way. The transition section insulating device and the safety control device are positioned between two sections of mobile contact networks right above the track, when a section of contact network is swung out of position, a position travel switch in the safety control device is triggered, an electric interlocking control system gives out a swing out-of-position signal, and meanwhile an electromagnetic lock module in the safety control device is electrified to work, so that the locking of the two sections of mobile contact networks and the transition section insulating device is realized; when detecting that the travel switch of the overhead line system in place is out of order or is manually misoperation, an overrun travel switch in the safety control device is triggered, and the electric interlocking control system gives out an overrun signal, so that the isolating switch cannot be operated at the moment, and the power transmission operation is stopped; meanwhile, the automatic alarm device gives out an audible and visual alarm to remind on-site operators of the out-of-limit of the movable contact net. The safety interlocking device of the mobile contact network effectively avoids the short circuit phenomenon caused by direct contact of two sections (or more) of mobile contact networks, ensures the use safety of power supply equipment and an operating system, and further ensures the personal safety of field operators.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the specific embodiments. The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention. In the drawings:
fig. 1 is a diagram showing a swinging-out operation state of a mobile contact net to which the present invention is applied.
FIG. 2 is a schematic illustration of the construction of a transition piece insulation and safety control device in one embodiment of a safety interlock device of the present invention.
FIG. 3 is a schematic diagram of the safety interlock device of the present invention for effecting electrical interlock control.
Fig. 4 is a schematic diagram of the swing-out process of the overrun preventing mechanical structure of the mobile catenary.
Fig. 5 is a schematic diagram of the mobile catenary anti-overrun mechanical structure swung out of position.
The components are described as follows:
10 mobile contact net 11 swing arm 12 insulator
13 busbar 14 busbar overlap region
20 transition section insulation device 21 busbar 22 composite insulator
30 safety control device 31 external bump 32 combined module
321 and 326 internal ram 322 in-place travel switch 323 return spring
324 overrun travel switches 325 and 328 electrically insulating layer 327 electromagnetic lock module
40 automatic alarm device
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description. Examples of which are shown in the accompanying drawings and the specific examples described in the following detailed description of the invention are meant to be illustrative of the invention and are not to be construed as limiting the invention.
Fig. 1 is a diagram showing a swinging-out operation state of a mobile contact net to which the present invention is applied.
As shown in fig. 1, the invention provides a movable contact net safety interlocking device, which is suitable for a movable contact net and comprises a transition section insulating device 20, a safety control device 30 and an automatic alarm device 40, wherein the transition section insulating device 20, the safety control device 30 and the automatic alarm device 40 perform electric interlocking control.
The movable contact net 10 is fixed on a factory building upright post at one side of a track and is used for providing power for the entrance and exit of a rail transit vehicle from a maintenance warehouse and the debugging in the maintenance warehouse, and is provided with two swing arms 11 with equal length, which are connected with the upright post, one end of each swing arm is connected with the upright post and can rotate, and the rotation angle is 0-90 degrees; the other end of the swing arm 11 is connected with an insulator 12, and the length of the insulators at the two equal-length swing arm ends on the same section of mobile contact net is the same, and a contact net busbar 13 is connected between the other ends of the equal-length insulators 12. In order to realize overhaul under different conditions at different positions of a certain overhaul strand, at least two sections of movable contact networks are generally arranged above the same overhaul strand, and different movable contact networks are provided with swing arms with different lengths, and bus lengths between the swing arms are also different.
FIG. 2 is a schematic illustration of the construction of a transition piece insulation and safety control device in one embodiment of a safety interlock device of the present invention.
As shown in fig. 1 or 2, the transition section insulating device 20 in the safety interlocking device of the mobile contact network of the present invention is composed of two side buses 21 and a composite insulator 22 between opposite end parts thereof, and presents a "Z" type structure; the transition section insulating device 20 is installed right above the track and is located between the two sections of mobile contact networks 10.
Furthermore, because the positions of the two sections of movable contact networks on a certain track are fixed, the Z-shaped structure transition section insulating device between the two sections of movable contact networks can be fixedly arranged between the two sections of movable contact networks and right above the track, and the fixed mounting mode can be lifting from the top of a factory building or other fixed mounting modes.
Because the maintenance and debugging sites of the railway car need auxiliary equipment such as a crane, the transition section insulating device which is fixedly installed inevitably generates interference to the operation process of the auxiliary equipment. Thus, further, the transition piece insulator 20 is not fixed in position and can be mounted on one end of the telescopic mechanism, the other end of which is fixed on the upright on one side of the track; when the device works, the telescopic mechanism stretches out to move the transition section insulating device 20 to a position between the two sections of mobile contact networks 10 right above the track; when the device does not work, the telescopic mechanism contracts, the transition section insulating device leaves right above the track, and the maintenance auxiliary equipment can work normally.
As shown in fig. 1 or 2, both outer ends of the bus bars 21 on both sides of the transition piece insulation device have an overlap region 14 with the movable contact network bus bar 13, and the length of the bus bar overlap region 14 is smaller than the length of the bus bar 21 on one side of the transition piece insulation device.
As shown in fig. 2, the safety interlock device for a mobile contact network provided by the invention, wherein the safety control device 30 comprises an external collision block 31 and a combined module 32, and the combined module 32 comprises an electromagnetic lock module 327, internal collision blocks 321 and 326, a travel switch, a return spring 323 and electric insulation layers 325 and 328; when the movable contact net 10 swings out of position or overruns, the external collision block 31 collides with the extrusion electromagnetic lock module 327, the electromagnetic lock module 327 and the internal collision block generate transverse movement, the internal collision block collides with the in-position travel switch roller, the travel switch is triggered, and the electric interlocking control system correspondingly gives out-of-position or overruns signals.
Further, the travel switches in the combination module 32 include an in-place travel switch 322 and an overrun travel switch 324.
As shown in fig. 1 or 2, the safety interlock device for the mobile overhead line system according to the present invention, wherein the safety control device 30 is located at the bus bar overlapping area 14, wherein the external bump 31 is fixedly installed at the upper end side of the bus bar 11 of the mobile overhead line system by welding, bolting or other connection means, and the combination module 32 is fixedly installed at the lower end side of the bus bar 21 at both sides of the transition section insulating device 20 by welding, bolting or other connection means. The mounting positions of the outer bump 31 and the combination bump 32 at the ends of the respective bus bars may not be limited as to whether the upper side or the lower side of the bus bar ends are at the ends, because the mounting positions of the outer bump 31 and the combination bump 32 do not interfere with the normal sliding contact of the pantograph with the contact line on the rail transit vehicle. Put out in place: when the swing arm 11 of the mobile contact net 10 and the bus bar 13 between the swing arm 11 and the bus bar 13 are swung out (0-90 degrees), the electromagnetic lock module 327 in the combined module 32 at the tail end of the bus bar 13 of the transition section insulating device is pressed to enable the electromagnetic lock module 327 and the internal collision block 321 to transversely move, when the internal collision block 321 impacts the roller of the in-place travel switch 322 in the transverse moving process, the in-place travel switch 322 is triggered to indicate that the section of mobile contact net is swung out (90 degrees), and simultaneously, an in-place signal is swung out for the electric interlocking control system, at the moment, the electromagnetic lock module 327 is electrified, and the generated strong attraction force tightly attracts the external collision block 31 at the tail end of the bus bar of the mobile contact net, so that the mobile contact net is locked with the transition section insulating device. After locking, a worker sees a swing-out in-place signal given by the electric interlocking control system, and operates the isolating switch to give out the swing-out in-place movable contact net to carry out power transmission operation.
Out of overrun: when a travel switch (not shown in the figure) for detecting the mobile contact net in place fails, or due to manual misoperation, the contact net swing arm continues to swing, the outer collision block 31 at the tail end of the contact net swing arm continues to squeeze the electromagnetic lock module 327 at the tail end of the transition section insulation device, so that the inner collision block 326 moves transversely, and then the trolley of the overrun travel switch 324 is impacted, the overrun travel switch 324 is triggered, the swing arm of the mobile contact net passes through a safe working position, the overrun is swung out, an overrun signal is given to the electric interlocking control system, and the isolating switch cannot operate at the moment, so that power transmission operation cannot be carried out.
Further, when the overrun travel switch 324 is triggered, it indicates that the movable overhead line system swings out of overrun, and at this time, the automatic alarm device 40 (not shown in the figure) performs an audible and visual alarm to remind the on-site operator of the overrun problem of the overhead line system, so as to draw attention of the operator and perform emergency treatment. The position of the automatic alarm device can be set according to the field requirement and can be positioned near the isolating switch, and if the working specification of the automatic alarm device 40 exceeds the limit, the isolating switch cannot be operated at the moment, and the power transmission operation cannot be carried out.
As shown in fig. 1 or 2, in the safety interlock device for a mobile catenary according to the present invention, the return spring 323 is used for restoring the position of the combination module 32 and its internal devices after the mobile catenary is swung out or out of the position for overrun.
As shown in fig. 1 or 2, an electrical insulation layer 325 is located between the combined module 32 and the transition piece insulation device bus bar 21, and the electrical insulation layer 328 is located between the outer ram 31 and the mobile contact network bus bar 13. Electrically insulating layers 325 and 328 may isolate the safety control device from the electrical insulation between the bus bars.
FIG. 3 is a schematic diagram of the safety interlock device of the present invention for effecting electrical interlock control.
As shown in fig. 3, when the movable contact net swings out of position, the internal collision block 321 in the safety control device 30 collides with the position travel switch 322, so that the normally open contact of the position travel switch 322 is closed, the K1 relay coil is electrified, the normally open contact of the K1 relay is closed, the electromagnetic lock module 327 is controlled to be electrified, the external collision block 31 is adsorbed, and at the moment, the isolating switch can be manually operated to perform power transmission operation.
As shown in fig. 3, when the travel switch that detects that the mobile overhead line system is swung out of place fails or is operated by a person, the internal bump 326 hits the overrun travel switch 324, which causes the normally closed contact of the overrun travel switch 324 to be opened, and the overrun signal is fed back to the PLC controller, at this time, the isolating switch cannot be operated, and the power transmission operation is stopped.
In the swing-out process of the movable contact net, the electromechanical combined safety interlocking device can realize the function of preventing overrun, and the mechanical structure overrun preventing device can also simply realize the function of preventing the movable contact net from swinging out of overrun.
Fig. 4 is a schematic diagram of the swing-out process of the overrun preventing mechanical structure of the mobile catenary.
As shown in fig. 4, the mechanical structure of the movable contact net for preventing overrun is 'L' -shaped and is positioned at one end of the contact net swing arm connected with the upright post, one end of the mechanical structure is fixedly welded at the middle part of one side of the swing arm rotating shaft, and the mechanical structure is not stressed and does not play a role when the movable contact net swing arm swings out from 0 degrees.
Fig. 5 is a schematic diagram of the mobile catenary anti-overrun mechanical structure swung out of position.
As shown in fig. 5, when the swing arm of the mobile network swings out of place (90 °), the working end of the anti-overrun mechanical structure of the mobile contact network is perpendicular to the position where the swing arm of the mobile network swings out of place at this moment, but when the travel switch which swings out of place is detected to fail, or when the swing arm of the contact network continues to swing due to manual misoperation, the anti-overrun mechanical structure is used as a mechanical direct stop, the working end of the anti-overrun mechanical structure is stressed, the continuous swing of the swing arm is prevented, and the function of preventing the swing arm of the mobile contact network from swinging out of overrun is realized.
The invention discloses a movable contact net safety interlocking device which is applicable to a movable contact net and comprises a transition section insulating device, a safety control device and an automatic alarm device; the transition section insulating device, the safety control device and the automatic alarm device are controlled in an electric interlocking way. The transition section insulating device is provided with a Z-shaped structure and is positioned between two sections of movable contact networks right above the track; the safety control device locks the overhead contact system when the two-section movable overhead contact system is swung out of place or is swung out of overrun, so that overrun is prevented; if the swing out exceeds the limit, the isolating switch cannot be operated, and the automatic alarm device can carry out audible and visual alarm. In the working process of the movable contact net, the movable contact net safety interlocking device can effectively avoid the short circuit phenomenon caused by the contact of two sections (or more than two sections) of movable contact net, has a protective effect on the use safety of power supply equipment and the personal safety of field acting personnel, and avoids unnecessary danger.
Claims (7)
1. The utility model provides a portable contact net safety interlock, is applicable to portable contact net (10), its characterized in that: comprises a transition section insulation device (20), a safety control device (30) and an automatic alarm device (40); the transition section insulation device (20), the safety control device (30) and the automatic alarm device (40) are controlled in an electric interlocking way; the transition section insulating device (20) consists of two side buses (21) and a composite insulator (22) between opposite ends of the buses, and has a Z-shaped structure; the other ends of the two side buses (21) are provided with an overlapping area (14) with the movable contact network buses (13), and the length of the bus overlapping area (14) is smaller than that of the single side bus (21) of the transition section insulating device; the safety control device (30) comprises an external ram (31) and a combination module (32), the combination module (32) comprising: an electromagnetic lock module (327), first and second internal bumps (321, 326), a travel switch, a return spring (323), first and second electrically insulating layers (325, 328); when the movable contact net (10) swings out of place or exceeds the limit, the outer collision block (31) collides with the extrusion electromagnetic lock module (327), the electromagnetic lock module (327) and the inner collision block move transversely, the inner collision block collides with the travel switch roller, the travel switch is triggered, and the electric interlocking control system correspondingly gives out of place or exceeds the limit signal.
2. The mobile catenary safety interlock of claim 1 wherein: the movable contact net (10) is fixed on a stand column at one side of the track, and is provided with two swing arms (11) with equal length, which are connected with the stand column, the other ends of the swing arms (11) are provided with insulators (12) with equal length, and contact net bus bars (13) are connected between the other ends of the insulators (12); different mobile catenary have swing arms and busbars of different lengths.
3. The mobile catenary safety interlock of claim 1 wherein: the transition section insulating device (20) is fixedly arranged right above the track and is positioned between the two sections of movable contact networks (10).
4. The mobile catenary safety interlock of claim 1 wherein: the transition section insulating device (20) is arranged at one end of the telescopic mechanism, and the other end of the transition section insulating device is fixed on the upright post at one side of the track; when the device works, the telescopic mechanism stretches out to move the transition section insulating device (20) to the position right above the track and is positioned between the two sections of movable contact networks (10).
5. The mobile catenary safety interlock of claim 1 wherein: the travel switch comprises an in-place travel switch (322) and an overrun travel switch (324); the first electrically insulating layer (325) is located between the combined module (32) and the transition section insulating device busbar (21), and the second electrically insulating layer (328) is located between the outer bump (31) and the mobile contact network busbar (13).
6. The mobile catenary safety interlock of claim 1 wherein: the safety control device (30) is located in a busbar overlapping area (14), wherein the external collision block (31) is fixedly installed at the tail end of the movable contact net busbar (13) in a welding and bolting mode, and the combined module (32) is fixedly installed at the tail ends of the busbars (21) at two sides of the transition section insulating device in a welding and bolting mode.
7. The mobile catenary safety interlock of claim 1 wherein: when the movable contact net (10) is put out to work in place, the external collision block (31) abuts against the combined module (32) and is positioned on the outer side of the combined module (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710573270.5A CN107253454B (en) | 2017-07-14 | 2017-07-14 | Movable contact net safety interlocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710573270.5A CN107253454B (en) | 2017-07-14 | 2017-07-14 | Movable contact net safety interlocking device |
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| Publication Number | Publication Date |
|---|---|
| CN107253454A CN107253454A (en) | 2017-10-17 |
| CN107253454B true CN107253454B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710573270.5A Active CN107253454B (en) | 2017-07-14 | 2017-07-14 | Movable contact net safety interlocking device |
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| CN (1) | CN107253454B (en) |
Citations (7)
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| CN1121254A (en) * | 1994-09-14 | 1996-04-24 | 羊城铁路总公司韶关机务段 | Automatic and safe monitoring device isolated switch |
| CN101306652A (en) * | 2008-06-05 | 2008-11-19 | 中铁电气化局集团宝鸡器材有限公司 | Horizontal rotation rigid moveable contact line system |
| CN201201528Y (en) * | 2008-05-13 | 2009-03-04 | 北京铁道工程机电技术研究所 | Railway side shifting type rigid movable contact electric network |
| CN201729071U (en) * | 2010-08-05 | 2011-02-02 | 银振刚 | Intelligent mobile contact screen |
| CN202011410U (en) * | 2011-04-02 | 2011-10-19 | 中铁电气化局集团宝鸡器材有限公司金台分厂 | Safety interlock control system for lateral moving rigid movable contact net used in overhaul shed of motor train unit |
| WO2012123252A1 (en) * | 2011-03-11 | 2012-09-20 | Siemens Aktiengesellschaft | Line switch system for a line system for supplying a vehicle with electricity |
| CN203623405U (en) * | 2013-11-29 | 2014-06-04 | 兰州华创交大电气科技有限责任公司 | Intelligent mobile overhead line system device for storeroom door |
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2017
- 2017-07-14 CN CN201710573270.5A patent/CN107253454B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121254A (en) * | 1994-09-14 | 1996-04-24 | 羊城铁路总公司韶关机务段 | Automatic and safe monitoring device isolated switch |
| CN201201528Y (en) * | 2008-05-13 | 2009-03-04 | 北京铁道工程机电技术研究所 | Railway side shifting type rigid movable contact electric network |
| CN101306652A (en) * | 2008-06-05 | 2008-11-19 | 中铁电气化局集团宝鸡器材有限公司 | Horizontal rotation rigid moveable contact line system |
| CN201729071U (en) * | 2010-08-05 | 2011-02-02 | 银振刚 | Intelligent mobile contact screen |
| WO2012123252A1 (en) * | 2011-03-11 | 2012-09-20 | Siemens Aktiengesellschaft | Line switch system for a line system for supplying a vehicle with electricity |
| CN202011410U (en) * | 2011-04-02 | 2011-10-19 | 中铁电气化局集团宝鸡器材有限公司金台分厂 | Safety interlock control system for lateral moving rigid movable contact net used in overhaul shed of motor train unit |
| CN203623405U (en) * | 2013-11-29 | 2014-06-04 | 兰州华创交大电气科技有限责任公司 | Intelligent mobile overhead line system device for storeroom door |
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| CN107253454A (en) | 2017-10-17 |
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