CN211342267U - Interlocking safety circuit for controlling rail vehicle door and door control device - Google Patents
Interlocking safety circuit for controlling rail vehicle door and door control device Download PDFInfo
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- CN211342267U CN211342267U CN201921936858.3U CN201921936858U CN211342267U CN 211342267 U CN211342267 U CN 211342267U CN 201921936858 U CN201921936858 U CN 201921936858U CN 211342267 U CN211342267 U CN 211342267U
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Abstract
The present disclosure relates to an interlocking safety circuit for rail vehicle door control, a door control device. The interlocking safety circuit includes a plurality of interlocking modules connected in series, each interlocking module corresponding to one or more doors of the rail vehicle, each interlocking module including a safety relay and a door lock in-place switch connected in series. Wherein, safety relay is used for being connected with the locking device who corresponds the door, safety relay sets up to: the safety relay is closed in the case that the locking device of the corresponding vehicle door controls the locking of the vehicle door. The door lock switch that targets in place is used for being connected with the door lock of corresponding door, the door lock switch that targets in place sets up to: and under the condition that the door lock of the corresponding vehicle door is locked in place, the door lock in-place switch is closed. Therefore, under the condition of ensuring the overall safety of the vehicle door safety loop, the structure of the whole vehicle door interlocking safety loop is simplified, and the number of relays is reduced.
Description
Technical Field
The disclosure relates to the field of rail vehicle control, in particular to an interlocking safety circuit and a vehicle door control device for controlling a vehicle door of a rail vehicle.
Background
In recent years, along with the rapid development of the urban rail transit industry, people have higher and higher requirements on the safety of urban rail transit vehicles.
During the running of the rail vehicle, all the doors must be kept closed, and the doors need to be opened again at the stop. If the limit switch of the door is in trouble, there is a possibility that the vehicle is driven by accident without the door being closed, which seriously affects safety. At present, almost all rail vehicles are provided with an interlocking safety circuit for controlling vehicle doors, which is used for detecting whether each vehicle door is in a closed state or not and timely finding out the condition that the vehicle doors are not normally closed due to certain faults. When the vehicle door is not closed, the door interlock safety circuit is disconnected, the vehicle traction enabling is blocked, and the vehicle is prevented from running under the condition that the vehicle door is not closed.
An Electronic Door Controller (EDCU) is usually provided at each door of a railway vehicle, and the EDCUs are connected in series in a loop of a certain structure to form a door interlock safety loop of the door, and the door interlock safety loops of all the doors are connected in series to form a door interlock safety loop of the whole vehicle. The vehicle door interlocking safety circuit widely adopted at the present stage is mainly a circuit with a two-stage structure, namely, a single compartment is taken as a unit, and each compartment is connected with all vehicle door controllers in the compartment in series by utilizing a relay to form a lower-stage circuit; and then the contacts of all the lower-level loop relays are connected in series to form an upper-level loop covering the whole railway vehicle. When a vehicle door in a certain lower-level loop is not normally closed due to some faults, the potential of a vehicle door controller arranged on the vehicle door is changed, and then the upper-level loop is influenced through the series connection relation. And when the vehicle detects that the door interlock safety circuit of the vehicle is not closed, the vehicle traction enabling is locked.
SUMMERY OF THE UTILITY MODEL
The purpose of this disclosure is to provide a simple, reliable interlocking safety circuit, door controlling means for rail vehicle door control.
In order to achieve the above object, the present disclosure provides an interlocking safety circuit for a rail vehicle door control, the interlocking safety circuit including a plurality of interlocking modules connected in series, each interlocking module corresponding to one or more doors of the rail vehicle, each interlocking module including a safety relay and a door lock in-place switch connected in series.
Wherein, safety relay is used for being connected with the locking device who corresponds the door, safety relay sets up to: the safety relay is closed in the case that the locking device of the corresponding vehicle door controls the locking of the vehicle door. The door lock switch that targets in place is used for being connected with the door lock of corresponding door, the door lock switch that targets in place sets up to: and under the condition that the door lock of the corresponding vehicle door is locked in place, the door lock in-place switch is closed.
Optionally, the normally closed contact of the safety relay is connected in series in the interlock module.
Optionally, the normally closed contact of the door lock in-place switch is connected in series in the interlocking module.
Optionally, each interlock module further comprises a door-close-in-place switch connected in series with the safety relay, the door-close-in-place switch being configured to connect with a door panel of a corresponding vehicle door, the door-close-in-place switch being configured to: and under the condition that the corresponding vehicle door is closed in place, the door-closed-place switch is closed.
Optionally, the normally open contact of the door-closed position switch is connected in series in the interlock module.
Optionally, each interlock module further includes an emergency unlocking switch connected in series with the safety relay, the emergency unlocking switch is used for being connected with a locking device of a corresponding vehicle door, and the emergency unlocking switch is set to: and under the condition that the emergency unlocking gear key is dialed to the reset gear, the emergency unlocking switch is closed, and the corresponding locking device of the vehicle door locks the vehicle door.
Optionally, the normally open contact of the emergency unlocking switch is connected in series in the interlocking module.
Optionally, each interlock module further includes an isolation lock switch connected in parallel with a circuit formed by connecting the safety relay and the door lock in-place switch in series, the isolation lock switch is configured to be connected to an isolation lock of a corresponding vehicle door, and the isolation lock switch is configured to: the isolation lock switch is closed when the isolation lock is dialed into an isolation gear, and the isolation lock switch is opened when the isolation lock is dialed into a non-isolation gear.
Optionally, the normally open contact of the isolation lock switch is connected in series in the interlock module.
The present disclosure also provides a door control device of a rail vehicle, including the above-mentioned interlocking safety circuit that the present disclosure provided.
Through the technical scheme, the interlocking modules corresponding to the vehicle doors are connected in series to form a single-stage interlocking safety circuit, each interlocking module comprises the safety relay and the door lock in-place switch which are connected in series, the structure of the whole vehicle door interlocking safety circuit is simplified under the condition that the overall safety of the vehicle door safety circuit is ensured, the number of relays is reduced, the overall stability of the vehicle door safety circuit is improved, and meanwhile, fault diagnosis and treatment are easy.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a block diagram of an interlocked safety circuit provided by an exemplary embodiment;
FIG. 2 is a schematic diagram of a scenario in which an interlocked safety loop is provided in an exemplary embodiment;
FIG. 3 is a schematic block diagram of an interlock module provided in an exemplary embodiment;
fig. 4 is a schematic diagram of the contact types of the various switches in the interlock module provided by an exemplary embodiment.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the existing interlocking safety circuit for controlling the door of the railway vehicle, the interlocking safety circuit is mainly a circuit with a secondary structure, and the secondary circuit comprises a plurality of relays, so that the material cost is high, the structure is complex, and the stability and the safety are poor. In view of this, the inventor thinks that a simple single-stage interlocking safety circuit can be formed, the structure of the whole vehicle door interlocking safety circuit is simplified, and the number of relays is reduced.
FIG. 1 is a block diagram of an interlocked safety circuit provided by an exemplary embodiment. As shown in fig. 1, an interlocking safety circuit for a rail vehicle door control is characterized in that the interlocking safety circuit comprises a plurality of interlocking modules connected in series, each interlocking module corresponding to one or more doors of a rail vehicle, and each interlocking module comprises a safety relay and a door lock in-place switch connected in series.
Wherein, safety relay is used for being connected with the locking device who corresponds the door, and safety relay sets up to: the safety relay is closed in the case where the locking device of the corresponding door controls the locking of the door. The safety relay is opened when the locking device of the corresponding vehicle door controls the opening of the vehicle door. The safety relay may be a safety relay meeting EN50205 standard.
The door lock switch that targets in place is used for being connected with the door lock that corresponds the door, and the door lock switch that targets in place sets up to: and when the door lock of the corresponding vehicle door is not in place, the door lock in-place switch is opened.
As described above, in the case where the doors are not closed, the interlock safety circuit should be in an open state so that the vehicle traction enable lock is enabled to prevent the vehicle from traveling without the doors closed. The safety relay and the door lock in-place switch are set according to the method, so that the interlocking safety circuit is disconnected under the condition that the closing of the vehicle door is uncertain. In this way, the rail vehicle can be ensured to run in the door-locked state by simply connecting the safety relay and the door lock in place switch in series in the interlocking safety circuit.
One interlocking module may correspond to one door of the rail vehicle. That is, the interlock module may be provided in the EDCU of the corresponding vehicle door. The safety relay and door lock in-place switch in the interlock module are devices specific to the door to which the interlock module corresponds.
When one interlocking module corresponds to a plurality of doors of the railway vehicle, the safety relay and the door lock in-place switch in the interlocking module can simultaneously control the plurality of doors, and the plurality of doors can have the same EDCU, the safety relay and the door lock in-place switch. That is, the control of the plurality of doors is synchronized.
Through the technical scheme, the interlocking modules corresponding to the vehicle doors are connected in series to form a single-stage interlocking safety circuit, each interlocking module comprises the safety relay and the door lock in-place switch which are connected in series, the structure of the whole vehicle door interlocking safety circuit is simplified under the condition that the overall safety of the vehicle door safety circuit is ensured, the number of relays is reduced, the overall stability of the vehicle door safety circuit is improved, and meanwhile, fault diagnosis and treatment are easy.
FIG. 2 is a schematic diagram of an interlocked safety loop provided by an exemplary embodiment. As shown in fig. 2, a corresponding interlock module is disposed above each door, and each interlock module is connected in series and is connected to an automatic train Protection system (ATP). The ATP can judge the on-off of the interlocking safety circuit and then send the judgment result to the driver console or the signal system, and the driver console or the signal system can control the driving according to the on-off result.
In one embodiment, the normally closed contacts of the safety relay are connected in series in the interlock module in which they are located. In this way, the locking device can only control the unlocking of the door if the safety relay is activated (i.e. triggered). If the safety relay is not activated, the safety relay is in a closed state, so that the interlocking safety loop is conducted, and the locking device controls the locking of the vehicle door. The interlocked safety circuit cannot be closed as long as the safety relay is in the activated state.
Wherein, the activation condition of the safety relay can be any one of the following three conditions, at this time, the interlocking safety loop is disconnected: (1) the EDCU receives a valid door opening command, the hard wire enable signal is activated, the vehicle door is not isolated, the zero speed signal (hard wire) is activated, and the network door allows the signal to be valid (network signal); (2) the door is not closed; (3) the door emergency device is operational.
The deactivation condition of the safety relay may be: the door has been closed and the door emergency device is not operated and after the lock-up test has been successfully performed (if there is a solenoid valve in the current door drive environment).
In one embodiment, the normally closed contacts of the door lock in place switch may be in series with the interlock module in which it is located. Thus, when the door lock is in the in-place locking position, the door lock in-place switch is not activated (not triggered, not operated), and when the door lock is away from the in-place locking position or does not reach the in-place locking position, the door lock in-place switch is activated (triggered), the normally closed contact is opened, and the interlocking safety circuit of the vehicle door is disconnected.
Locking the door lock in place indicates that the door lock has been properly locked. Whether the door lock is in place can be judged according to the distance between the door plates of the two doors, for example, when the distance between the door plates of the two doors is less than 3cm, the door lock is judged to be in place. Specifically, the door lock in-place switch can be closed when the door lock is locked in place in a mechanical contact mode, and the door lock in-place switch is opened when the door lock corresponding to the vehicle door is not locked in place.
The door lock in-place switch can be a travel switch or a microswitch, the type of the door lock in-place switch can be selected according to ISO13849-1 or EN60204-1, and the door lock in-place switch is suitable for safety-related applications. Thus, when the door lock is not locked in place, the normally closed contact can be mechanically ensured to be opened even if the door lock in-place switch fails.
Fig. 3 is a schematic structural diagram of an interlock module provided in an exemplary embodiment. Fig. 3 is a schematic diagram of the structure of one of the interlock modules, and the other interlock modules of the interlock safety circuit may have the same or different structures. In this embodiment, each interlock module may further include a gate off position switch connected in series with the safety relay. The door closing in-place switch is used for being connected with a door plate of a corresponding vehicle door, and the door closing in-place switch is set as follows: and the door closing in-place switch is closed under the condition that the corresponding vehicle door is closed in place, and the door closing in-place switch is opened under the condition that the corresponding vehicle door is not closed in place.
The door is closed in place, which means that the vehicle is running without danger to passengers. Whether the door is closed in place or not can be judged according to the distance between the door panels of the two doors, for example, when the distance between the door panels of the two doors is less than 30cm, the door is judged to be closed in place. The door-closed-position switch may be arranged to close in the event that the door is closed in position by means of mechanical contact.
In the embodiment, the condition that the vehicle door is not closed in place can be ensured, the door closing in-place switch is opened, and the interlocking safety circuit is disconnected, so that the vehicle traction enabling lock is realized.
In particular, the normally open contacts of the door-closed-position switch may be connected in series in the interlocking module in which it is located. Thus, when the door panel moves towards the door closing direction and is closed to the proper position, the door closing to the proper position switch is triggered (activated and acted). When the door is not closed in place, the door-closing-in-place switch is not triggered, and the normally open contact is disconnected, so that the interlocking safety loop of the door is disconnected.
When a safety loop relay, a door lock in-place switch and a door close in-place switch are connected in series in an interlocking safety loop of the vehicle door, even if a normally open contact of the door close in-place switch is conducted in a failure mode, the interlocking safety loop cannot be closed. When the door lock is not in the in-place locking position, the door lock in-place switch can disconnect the relay contact, and the contact of the in-place locking switch is also disconnected, so that the disconnection of the interlocking safety circuit can be further ensured, and the vehicle can be blocked by traction.
As shown in fig. 3, each interlock module may further include an emergency unlock switch connected in series with the safety relay. The emergency unlocking switch is used for being connected with the locking device of the corresponding vehicle door. The emergency unlocking switch is set as follows: and under the condition that the emergency unlocking gear key is dialed to the reset gear, the emergency unlocking switch is closed, the locking device corresponding to the car door locks the car door, and under the condition that the emergency unlocking gear key is dialed to the emergency unlocking gear, the emergency unlocking switch is opened, and the locking device corresponding to the car door unlocks the car door.
The emergency unlocking gear key can comprise an emergency unlocking gear and a reset gear, and when the gear is reset, the train normally runs. When the automobile door needs to be opened for escape in an emergency, the button can be manually pushed to an emergency unlocking gear, and the automobile door can be independently controlled to be unlocked at the moment.
In this way, the interlocked safety circuit of the door can be closed when the train door lock is in the locked position and emergency unlocking is not operated (emergency unlock gear button is in reset gear). When the emergency unlocking of the vehicle door is operated (the emergency unlocking gear button is in the emergency unlocking gear), the emergency unlocking switch is turned on, and the interlocking safety circuit of the vehicle door can be disconnected.
And the normally open contact of the emergency unlocking switch is connected in series in the interlocking module. Therefore, when the emergency unlocking gear key is in the reset gear, the emergency unlocking switch is triggered (actuated), and the normally open contact of the emergency unlocking switch is closed; when the emergency unlocking gear key is in the emergency unlocking gear, the emergency unlocking switch is not triggered (does not act), the emergency unlocking switch is disconnected, the interlocking safety circuit of the vehicle door is disconnected, and the vehicle traction enabling lock is blocked.
When the safety loop relay, the door lock in-place switch, the door close in-place switch and the emergency unlocking switch are connected in series in the interlocking safety loop of the vehicle door, even if the normally open contact of the emergency unlocking switch fails to be conducted, the interlocking safety loop of the vehicle door cannot be closed, because the contact of the safety loop relay is connected in series in the interlocking safety loop of the vehicle door. When an emergency unlocking signal is collected (the emergency unlocking gear button is in the emergency unlocking gear), the contact of the emergency unlocking switch is disconnected, the emergency unlocking switch is opened, and the door interlocking safety circuit is disconnected.
In yet another embodiment, each interlock module further includes an isolation lock switch connected in parallel with the circuit after the safety relay and the door lock in place switch are connected in series. The isolation lock switch is used for being connected with an isolation lock of a corresponding vehicle door. The isolation lock switch may be configured to: the isolation lock switch is closed when the isolation lock is shifted to the isolation gear, and is open when the isolation lock is shifted to the non-isolation gear.
As shown in fig. 3, the safety circuit relay, the door lock in-place switch, the door close in-place switch and the emergency unlocking switch are connected in series and then connected in parallel with the isolation lock switch.
The isolation lock can keep off the position including keeping apart and non-two fender positions, when the door is normal, can dial non-isolation fender position, accepts general control, when the door trouble, can artifically dial isolation fender position, keeps apart the door that will break down from whole door system, can report this door trouble and status information simultaneously, prevents to influence the operation because of single door trouble. The normally open contacts of the isolation lock switch may be connected in series in the interlock module in which it is located.
And under the condition that the isolation lock is shifted to the isolation gear, the isolation lock switch is closed, and the safety loop relay, the door lock in-place switch, the door closing in-place switch and the emergency unlocking switch are short-circuited. And under the condition that the isolation lock is dialed to a non-isolation gear, the isolation lock switch is opened, so that the safety loop relay, the door lock in-place switch, the door close in-place switch and the emergency unlocking switch jointly determine the on-off of the interlocking safety loop. The interlock safety circuit of the vehicle door also has the function of bypassing the vehicle door by the isolation lock operation.
The safety circuit relay, the door lock in-place switch, the door close in-place switch, the emergency unlocking switch and the isolation lock switch can be the travel switches or the micro switches.
Fig. 4 is a schematic diagram of the contact types of the various switches in the interlock module provided by an exemplary embodiment. Fig. 4 shows the various relays and switches in the various embodiments described above. The contact of each switch or relay is in a normally open state or a normally closed state, which has been described in detail above and will not be described herein.
In the embodiment of fig. 4, when the EDCU is powered off, the safety relay is in a deactivated state, i.e., a closed state, the normally closed contact is turned on, and when the door is not in the closed in-place position, the door-closed in-place switch is turned on (the door-closed in-place switch is a normally open contact), which can also ensure that the interlocking safety circuit of the door is disconnected; when the door lock is in the in-place locking position, the in-place door lock switch is closed (the in-place door lock switch is a normally closed contact), and the interlocking safety loop of the vehicle door is closed. Therefore, the function of the interlock safety circuit of the vehicle is not affected even when the EDCU is powered off.
The arrangement of the electric shock type (normally open or normally closed) of each relay and switch in the embodiment can avoid the situation that the usability of the vehicle under the condition is influenced due to the fact that the vehicle cannot run because the interlocking safety loop of the vehicle door cannot be closed when the vehicle door of the vehicle is actually in the closed and locked state under the condition that the EDCU is powered off, so that the application range of the vehicle is widened.
The EDCU can periodically check the consistency of the relay control instruction of the interlocking safety circuit and the state of the safety relay contact, and if the check is inconsistent, the safety relay can be activated to disconnect the safety relay, so that the interlocking safety circuit of the car door is disconnected, and the guiding safety side is processed.
The present disclosure also provides a door control device of a rail vehicle, including the above-mentioned interlocking safety circuit that the present disclosure provided.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. An interlocking safety circuit for rail vehicle door control, characterized in that the interlocking safety circuit comprises a plurality of interlocking modules connected in series, each interlocking module corresponding to one or more doors of the rail vehicle, each interlocking module comprising a safety relay and a door lock in place switch connected in series,
wherein, safety relay is used for being connected with the locking device who corresponds the door, safety relay sets up to: in the case that the locking device of the corresponding vehicle door controls the locking of the vehicle door, the safety relay is closed,
the door lock switch that targets in place is used for being connected with the door lock of corresponding door, the door lock switch that targets in place sets up to: and under the condition that the door lock of the corresponding vehicle door is locked in place, the door lock in-place switch is closed.
2. The interlocking safety circuit of claim 1, wherein the normally closed contacts of the safety relay are connected in series in the interlocking module in which they are located.
3. The interlocking safety circuit of claim 1, wherein the normally closed contacts of the door lock-in-place switch are connected in series in the interlocking module.
4. The interlock safety circuit of claim 1 wherein each interlock module further comprises a door closed in-place switch connected in series with the safety relay, the door closed in-place switch for connection with a door panel of a corresponding vehicle door, the door closed in-place switch configured to: and under the condition that the corresponding vehicle door is closed in place, the door-closed-place switch is closed.
5. The interlocked safety circuit of claim 4, wherein the normally open contacts of the door-to-door position switch are connected in series in the interlocked module.
6. The interlocking safety circuit of claim 1, wherein each interlocking module further comprises an emergency release switch connected in series with the safety relay, the emergency release switch for connection with a locking device of a corresponding vehicle door, the emergency release switch configured to: and under the condition that the emergency unlocking gear key is dialed to the reset gear, the emergency unlocking switch is closed, and the corresponding locking device of the vehicle door locks the vehicle door.
7. The interlocked safety circuit of claim 6, wherein the normally open contact of the emergency release switch is connected in series in the interlocked module.
8. The interlocking safety loop of claim 1, wherein each interlocking module further comprises a disconnecting lock switch connected in parallel with the circuit after the safety relay and the door lock in place switch are connected in series, the disconnecting lock switch for connection with a disconnecting lock of a corresponding vehicle door, the disconnecting lock switch configured to: the isolation lock switch is closed when the isolation lock is dialed into an isolation gear, and the isolation lock switch is opened when the isolation lock is dialed into a non-isolation gear.
9. The interlocking safety loop of claim 8, wherein the normally open contact of the isolation lock switch is connected in series in the interlocking module.
10. A door control device for a rail vehicle, characterized by comprising an interlocking safety circuit according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921936858.3U CN211342267U (en) | 2019-11-08 | 2019-11-08 | Interlocking safety circuit for controlling rail vehicle door and door control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921936858.3U CN211342267U (en) | 2019-11-08 | 2019-11-08 | Interlocking safety circuit for controlling rail vehicle door and door control device |
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| CN211342267U true CN211342267U (en) | 2020-08-25 |
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| CN201921936858.3U Active CN211342267U (en) | 2019-11-08 | 2019-11-08 | Interlocking safety circuit for controlling rail vehicle door and door control device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294058A (en) * | 2021-05-18 | 2021-08-24 | 安徽盛世高科轨道装备有限公司 | Electric end door control mechanism of electric motor train unit and control system thereof |
| CN113482463A (en) * | 2021-07-26 | 2021-10-08 | 中车长春轨道客车股份有限公司 | Locking system for cab partition wall door of railway passenger car |
-
2019
- 2019-11-08 CN CN201921936858.3U patent/CN211342267U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294058A (en) * | 2021-05-18 | 2021-08-24 | 安徽盛世高科轨道装备有限公司 | Electric end door control mechanism of electric motor train unit and control system thereof |
| CN113294058B (en) * | 2021-05-18 | 2022-08-16 | 安徽盛世高科轨道装备有限公司 | Electric end door control mechanism of electric motor train unit and control system thereof |
| CN113482463A (en) * | 2021-07-26 | 2021-10-08 | 中车长春轨道客车股份有限公司 | Locking system for cab partition wall door of railway passenger car |
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