CN107253454B - Movable contact net safety interlocking device - Google Patents

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

Mobile catenary safety interlock device

technical field

The invention relates to the field of mobile catenary, in particular to a safety interlocking device for a mobile catenary.

Background technique

The mobile catenary is a device that provides power supply for rail transit vehicles entering and exiting the maintenance depot and debugging in the maintenance depot. In order to realize maintenance with or without electricity under different conditions at different positions of a certain maintenance track, generally at least two sections of movable catenary are set above the same maintenance track. However, when the movable catenary swings directly above the maintenance track, due to the fault of the limit switch for detecting the swing out of the mobile catenary, or due to human misoperation, the catenary continues to swing, and the phenomenon of exceeding the limit occurs, so that Direct contact between two (or more than two) catenary lines that would otherwise not be in contact. When power is sent to the mobile catenary of one of the maintenance lanes, it will cause a short circuit of the catenary, causing serious damage to the power supply equipment, and even threatening the personal safety of the on-site operators.

Contents of the invention

Therefore, the present invention provides a safety interlocking device for a mobile catenary, which effectively solves the above-mentioned technical problem that the mobile catenary swings out of limit.

According to one aspect of the present invention, a mobile catenary safety interlocking device is provided, which is suitable for a mobile catenary, including a transition segment insulation device, a safety control device and an automatic alarm device; the transition segment insulation device, The safety control device and the automatic alarm device implement electrical interlocking control.

Optionally, according to the mobile catenary safety interlock device of the present invention, the mobile catenary is fixed on a column on one side of the track, has two equal-length swing arms connected to the column, and the other end of the swing arm has Insulators of equal length, busbars are connected between the other ends of the insulators; different mobile catenaries have swing arms and busbars of different lengths.

Optionally, according to the mobile catenary safety interlocking device of the present invention, the transition segment insulation device is composed of bus bars on both sides and composite insulators between opposite ends, and has a "Z" structure.

Optionally, according to the mobile catenary safety interlock device of the present invention, the other ends of the bus bars on both sides have overlapping areas with the mobile catenary bus bars, and the length of the overlapping area of the bus bars is shorter than the transition The length of the bus bar on one side of the section insulation device.

Optionally, according to the mobile catenary safety interlock device of the present invention, the transition segment insulation device is fixedly installed directly above the track, and is located between two sections of the mobile catenary.

Optionally, according to the mobile catenary safety interlock device of the present invention, the transition segment insulation device is installed at one end of the telescopic mechanism, and the other end is fixed on the column on one side of the track; during operation, the telescopic mechanism Extending moves the transition section insulation directly above the track and between the two sections of the mobile catenary.

Optionally, according to the mobile catenary safety interlocking device of the present invention, the safety control device includes an external bumper and a combined module, and the combined module is composed of an electromagnetic lock module, an inner bumper, a travel switch, a return spring, Composition of electrical insulation layer.

Optionally, according to the mobile catenary safety interlock device of the present invention, the travel switch includes an in-position travel switch and an over-limit travel switch; Between the rows, the electrical insulation layer is located between the outer striker and the mobile catenary busbar.

Optionally, according to the mobile catenary safety interlocking device of the present invention, the safety control device is located in the overlapping area of the busbars, wherein the external collision block and the combined module are respectively fixed and installed on the mobile catenary by welding or bolting. The end of the catenary busbar and the busbar on both sides of the transition section insulation device.

Optionally, according to the mobile catenary safety interlocking device of the present invention, when the mobile catenary swings out to work, the external impact block is close to the combination module and is located outside the combination module.

The mobile catenary safety interlocking device disclosed by the present invention is suitable for the mobile catenary, and includes a transition segment insulation device, a safety control device and an automatic alarm device; the transition segment insulation device, the safety control device and the automatic alarm device Implement electrical interlock control. The transition segment insulation device and the safety control device are located between the two sections of mobile catenary directly above the track. When a certain section of the catenary is put in place, the in-position travel switch in the safety control device is triggered, and the electrical interlock control system The swing out in place signal is given, and the electromagnetic lock module in the safety control device is energized to work at the same time to realize the locking of the two-stage mobile catenary and the transition segment insulation device; If it is misoperated by humans, the over-limit travel switch in the safety control device is triggered, and the electrical interlock control system gives an over-limit signal. At this time, the isolating switch cannot be operated, and the power transmission operation stops; at the same time, the automatic alarm device sends out a sound and light alarm. Remind the on-site operators that the mobile catenary is out of limit. The mobile catenary safety interlock device of the present invention effectively avoids the short-circuit phenomenon caused by the direct contact of two (or more) mobile catenary sections, ensures the safety of the power supply equipment and the operating system, and further ensures the on-site The personal safety of workers.

Description of 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 the purpose of illustrating specific embodiments and are not to be considered as limitations of the invention. In the attached picture:

Fig. 1 is a diagram showing the working state of the mobile catenary applicable to the present invention.

Fig. 2 is a structural schematic diagram of the transition segment insulation device and the safety control device in an embodiment of the safety interlock device of the present invention.

Fig. 3 is a schematic diagram of the principle of electrical interlock control realized by the safety interlock device of the present invention.

Fig. 4 is a schematic diagram of the swing-out process of the mobile catenary anti-overrunning mechanical structure.

Fig. 5 is a schematic diagram of the mobile catenary anti-overrunning mechanical structure put in place.

The components are described as follows:

10 mobile catenary 11 swing arm 12 insulator

13 busbar 14 busbar overlapping area

20 Transition section insulation device 21 Bus bar 22 Composite insulator

30 safety control device 31 external collision block 32 combination module

321 and 326 internal bumper 322 travel switch in place 323 return spring

324 Over-limit stroke switch 325 and 328 Electrical insulation layer 327 Electromagnetic lock module

40 automatic alarm device

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Examples of the embodiments are shown in the accompanying drawings, and the specific embodiments described in the following embodiments of the present invention are only illustrative illustrations of specific embodiments of the present invention, and are intended to explain the present invention, rather than constituting a limitation of the invention.

Fig. 1 is a diagram showing the working state of the mobile catenary applicable to the present invention.

As shown in Figure 1, the present invention provides a mobile catenary safety interlocking device, which is suitable for the mobile catenary, including a transition segment insulation device 20, a safety control device 30 and an automatic alarm device 40, wherein the transition segment The segment insulation device 20, the safety control device 30 and the automatic alarm device 40 implement electrical interlocking control.

The mobile catenary 10 is fixed on the column of the factory building on one side of the track, and is used to provide power supply for rail transit vehicles entering and exiting the maintenance garage and debugging in the maintenance garage. It has two equal-length swing arms 11 connected to the column. One end of the swing arm is connected with the column and can rotate, and the rotation angle is 0-90°; Similarly, a catenary busbar 13 is connected between the other ends of the equal-length insulators 12 . In order to realize maintenance under different conditions at different positions of a certain maintenance track, generally at least two sections of movable catenary are set above the same maintenance track. Different mobile catenary has swing arms of different lengths. The busbar lengths are also different.

Fig. 2 is a structural schematic diagram of the transition segment insulation device and the safety control device in an embodiment of the safety interlock device of the present invention.

As shown in Fig. 1 or 2, the transition segment insulation device 20 in the mobile catenary safety interlock device of the present invention is composed of bus bars 21 on both sides and composite insulators 22 between the opposite ends thereof, presenting a "Z ” type structure; the transition section insulation device 20 is installed directly above the track, and is located between two sections of the mobile catenary 10 .

Furthermore, since the positions of the two sections of mobile catenary on a certain track are fixed, the "Z" structure transition section insulation device in between can also be fixedly installed between the two sections of mobile catenary and located directly above the track, The fixed installation method can be hoisting from the top of the factory building or other fixed installation methods.

Since auxiliary equipment such as cranes are needed for rail vehicle maintenance and commissioning, the fixedly installed transition section insulation device will inevitably interfere with the operation process of auxiliary equipment. Therefore, further, the position of the transition segment insulation device 20 is not fixed, and can be installed on one end of the telescopic mechanism, and the other end of the telescopic mechanism is fixed on the column on one side of the track; The transition section insulation device 20 moves between the two sections of the mobile catenary 10 directly above the track; when not working, the telescopic mechanism shrinks, and the transition section insulation device leaves the top of the track to facilitate the normal operation of the maintenance auxiliary equipment.

As shown in Figure 1 or 2, the two outer ends of the busbars 21 on both sides of the transition segment insulation device have an overlapping area 14 with the mobile catenary bus bar 13, and the length of the bus bar overlapping area 14 is shorter than that of the transition segment The length of the bus bar 21 on one side of the insulation device.

As shown in Figure 2, in the mobile catenary safety interlocking device provided by the present invention, the safety control device 30 includes an external collision block 31 and a combined module 32, and the combined module 32 includes an electromagnetic lock module 327, an internal collision block 321 And 326, travel switch, back-moving spring 323, electrical insulation layer 325 and 328; When the mobile catenary 10 was put in place or exceeded, the external bumper 31 impacted and extruded the electromagnetic lock module 327, the electromagnetic lock module 327 and the inner bumper Lateral movement occurs, the internal bumper hits the roller of the travel switch in place, the travel switch is triggered, and the electrical interlock control system gives a corresponding signal of swing out in place or overrun.

Further, the travel switch in the combination module 32 includes a travel switch 322 in place and a travel switch 324 beyond the limit.

As shown in Figure 1 or 2, according to the mobile catenary safety interlocking device of the present invention, the safety control device 30 is located in the overlapping area 14 of the busbar, wherein the external collision block 31 is connected by welding, bolting or other Fixedly installed on the upper side of the end of the mobile catenary busbar 11, the combined module 32 is fixedly installed under the ends of the busbar 21 on both sides of the transition section insulation device 20 by welding, bolting or other connection methods side. The outer bumper 31 and the combination bumper 32 are located at the end of the corresponding bus bar. As for the installation position on the upper side or the lower side of the bus end, there is no limit, because the installation position of the outer bumper 31 and the combined bumper 32 does not hinder The normal sliding contact between the pantograph and the contact wire on the rail transit vehicle. Swing out in place: When the swing arm 11 of the mobile catenary 10 together with the bus bar 13 in between is in the swing out process (0-90°), the outer bumper 31 at the end of the bus bar 13 is located at the transition section by extrusion The electromagnetic lock module 327 in the combined module 32 at the end of the bus bar 21 of the insulating device causes the electromagnetic lock module 327 and the internal collision block 321 to move laterally. When the internal collision block 321 hits the roller of the limit switch 322 during the lateral movement , the in-position travel switch 322 is triggered, indicating that the section of the mobile catenary is in place (90°), and at the same time, a signal is sent to the electrical interlock control system. At this time, the electromagnetic lock module 327 is powered on, and the strong suction generated by it Tightly suck the external striker 31 at the end of the mobile catenary busbar, so that the mobile catenary and the transition section insulation device are locked. After locking, the staff sees the swing out signal given by the electrical interlock control system, and operates the isolating switch to carry out the power transmission operation to the swing out mobile catenary.

Swing out of limit: When the limit switch (not shown in the figure) that detects the position of the mobile catenary fails, or due to human misoperation, the swing arm of the catenary continues to swing, and the external impact block 31 at the end will continue to squeeze the transition The electromagnetic lock module 327 at the tail end of the section insulation device causes the internal collision block 326 to move laterally, and then hits the roller of the over-limit travel switch 324, and the over-limit travel switch 324 is triggered, indicating that the swing arm of this section of the mobile catenary has crossed the safety zone. When the working position is set out of limit, an over-limit signal is given to the electrical interlock control system. At this time, the isolating switch cannot be operated and the power transmission operation cannot be performed.

Further, when the over-limit stroke switch 324 is triggered, it means that the mobile catenary swings out of the limit. At this time, the automatic alarm device 40 (not shown in the figure) gives an audible and visual alarm to remind the on-site operators that the catenary over-limit problem occurs. , draw the attention of the operator and perform emergency treatment. The position of automatic alarm device can be set according to on-the-spot needs, can be positioned at the vicinity of isolating switch, and automatic alarm device 40 work description exceeds limit, and then isolating switch can't operate at this moment, can not carry out power transmission operation.

As shown in Figure 1 or 2, in the mobile catenary safety interlock device of the present invention, the return spring 323 is used for the combined module 32 and The position of its internal components is restored.

As shown in Fig. 1 or 2, the electrical insulation layer 325 is located between the combined module 32 and the busbar 21 of the transition segment insulation device, and the electrical insulation layer 328 is located between the external collision block 31 and the movable Between catenary bus bars 13. Electrical insulation layers 325 and 328 may isolate the electrical insulation between the safety control device and the bus bars.

Fig. 3 is a schematic diagram of the principle of electrical interlock control realized by the safety interlock device of the present invention.

As shown in Figure 3, when the mobile catenary is put in place, the internal bumper 321 in the safety control device 30 hits the limit switch 322 in place, causing the normally open contact of the limit switch 322 to close, the K1 relay coil is energized, and the K1 relay normally The open contact is closed, and the electromagnetic lock module 327 is controlled to be energized to absorb the external collision block 31. At this time, the isolating switch can be manually operated to carry out the power transmission operation.

As shown in Figure 3, when the travel switch that detects that the mobile catenary is in place fails or is misoperated, the internal bumper 326 hits the over-limit travel switch 324, causing the normally closed contact of the over-limit travel switch 324 to be disconnected , Feedback puts an overrun signal to the PLC controller, at this time the isolating switch cannot be operated, and the power transmission operation stops.

In the process of swinging out the mobile catenary, in addition to the electromechanical safety interlock device can realize the anti-overrunning function, the anti-overrunning device of the mechanical structure can also simply realize the function of preventing the mobile catenary from swinging out of the limit.

Fig. 4 is a schematic diagram of the swing-out process of the mobile catenary anti-overrunning mechanical structure.

As shown in Figure 4, the mechanical structure of the mobile catenary anti-overrunning is "L" type, which is located at the end of the connection between the swing arm of the catenary and the column, and one end is fixedly welded to the middle of one side of the swing arm rotation axis. When the catenary swing arm swings out from 0°, the mechanical structure is not stressed and does not play a role.

Fig. 5 is a schematic diagram of the mobile catenary anti-overrunning mechanical structure put in place.

As shown in Figure 5, when the swing arm of the mobile network is in place (90°), the working end of the mobile catenary anti-overrunning mechanical structure is perpendicular to the position where the swing arm of the mobile network is in place, but When it is detected that the limit switch that is in place fails, or due to human misoperation, the catenary swing arm continues to swing. At this time, the anti-overrunning mechanical structure acts as a mechanical straight stop, and its working end is stressed to prevent the swing arm from continuing to swing. The function of preventing the mobile catenary from swinging out of the limit has been realized.

The mobile catenary safety interlocking device disclosed by the present invention is suitable for the mobile catenary, and includes a transition segment insulation device, a safety control device and an automatic alarm device; the transition segment insulation device, the safety control device and the automatic alarm device Implement electrical interlock control. The transition segment insulation device has a "Z" structure and is located between the two sections of mobile catenary directly above the track; the safety control device locks the catenary when the two sections of mobile catenary are swinging out of place or beyond the limit, Prevent overrun; if the swing is overrun, the isolating switch cannot be operated, and the automatic alarm device will give an audible and visual alarm. During the working process of the mobile catenary, the use of the mobile catenary safety interlock device of the present invention can effectively avoid the short circuit phenomenon caused by the contact of two (or more than two) mobile catenary sections, and the damage to the power supply equipment The safety of use and the personal safety of on-site personnel play a protective role, avoiding unnecessary dangers.

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).