CN114537469A - Subway signal system switching device and equipment - Google Patents
Subway signal system switching device and equipment Download PDFInfo
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- CN114537469A CN114537469A CN202210440937.5A CN202210440937A CN114537469A CN 114537469 A CN114537469 A CN 114537469A CN 202210440937 A CN202210440937 A CN 202210440937A CN 114537469 A CN114537469 A CN 114537469A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/18—Railway track circuits
- B61L1/181—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/18—Railway track circuits
- B61L1/181—Details
- B61L1/185—Use of direct current
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Abstract
The invention relates to a subway signal system switching device and equipment. The apparatus comprises: the power supply, the switching relay and the switching switch; the power supply is used for supplying power to the switching relay; the change-over switch is used for controlling whether the power supply supplies power to the change-over relay or not, wherein a first end of the change-over switch is connected with the power supply, and a second end of the change-over switch is connected with the change-over relay; the switching relay is used for switching the accessed test line signal system, wherein the switching relay comprises a relay contact group and a relay coil, and the relay coil is used for controlling the relay contact group to be accessed into the corresponding test line signal system according to the state of the switching switch. The invention can ensure that only one test run signal is allowed to be sent at the same time, and improves the safety of test run operation.
Description
Technical Field
The invention relates to the technical field of signal switching, in particular to a subway signal system switching device and equipment.
Background
According to the planning condition of a subway line, a civil engineering arrangement scheme that vehicle sections of two lines are co-located exists, signal equipment of different manufacturers is required to be used for train motor car testing on the same test line, different signal systems sharing the test line are respectively provided with different signal equipment (a signal machine, a shaft counting system and the like) and interface circuits of the vehicle section signal systems, and test operation of the different signal systems is carried out. However, in the prior art, different signal systems sharing a test run line are all connected with an interface circuit of the same vehicle section signal system, so that the situation that different test run line signal systems on the same test run line simultaneously apply for test runs to the vehicle section signal systems, and the different test run line signal systems simultaneously receive a test run permission signal replied by the vehicle section signal systems, is easy to occur, and the problem of insecurity in the test run process is caused.
Disclosure of Invention
In view of this, the invention provides a switching device and equipment for a subway signal system, which can ensure that only one test run signal is allowed to be sent at the same time, and improve the safety of test run operation.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
in a first aspect, the present invention provides a switching device for a subway signal system, comprising: the power supply, the switching relay and the switching switch;
the power supply is used for supplying power to the switching relay;
the change-over switch is used for controlling whether the power supply supplies power to the change-over relay or not, wherein a first end of the change-over switch is connected with the power supply, and a second end of the change-over switch is connected with the change-over relay;
the switching relay is used for switching the accessed test line signal system, wherein the switching relay comprises a relay contact group and a relay coil, and the relay coil is used for controlling the relay contact group to be accessed into the corresponding test line signal system according to the state of the switching switch.
In a second aspect, the invention provides a switching device of a subway signal system, which comprises the above switching device, a test run panel and a combination cabinet, wherein the switch and the test run indicator lamp are arranged on the test run panel, and the power supply and the switching relay are arranged in the combination cabinet.
By means of the technical scheme, the switching device and the equipment for the subway signal system are provided, the test line signal systems are connected with the switching relays respectively through the switching relays, whether the switching relays are powered or not is controlled through the switching relays, it can be guaranteed that only one test line signal system is allowed to send test signals to the train section system at the same time, only one train is allowed to perform test at the same time, and safety of test operation is improved. Meanwhile, in the embodiment of the invention, different test line signal systems are connected to the switching relay, and the corresponding test line signal system is selected by the switching relay to send the test signals to the vehicle section signal system, so that the problem of low safety of test operation caused by the fact that different test line signal systems are directly connected with the vehicle section system, different test line signal systems send test signals to the vehicle section signal system at the same time and different test line signal systems receive signals allowing test at the same time in the prior art can be effectively solved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a switching device of a subway signal system according to an embodiment of the present invention;
fig. 2 is an enlarged view of a first partial structure of a switching device of a subway signal system according to an embodiment of the present invention;
fig. 3 is an enlarged view of a second partial structure of the switching device of the subway signal system according to the embodiment of the present invention;
fig. 4 is an enlarged view of a third partial structure of the switching device of the subway signal system according to the embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the prior art, different signal systems sharing a test run line are all connected with an interface circuit of the same vehicle section signal system, so that the situation that different test run line signal systems on the same test run line simultaneously apply for test runs to the vehicle section signal systems and the different test run line signal systems simultaneously receive a test run permission signal replied by the vehicle section signal systems easily occurs, and the problem of unsafe test run in the process of test run operation is caused.
In order to solve the above problems, an embodiment of the present invention provides a switching device for a subway signal system, referring to fig. 1, which is a schematic structural diagram of the switching device for the subway signal system, and the switching device includes:
a power supply 1 for supplying power to the switching relay; in this embodiment, the power supply is a 24V dc power supply.
A change-over switch 2 for controlling whether the power supply supplies power to the change-over relay; in this embodiment, whether the power supply supplies power to the switching relay is controlled by controlling the on and off states of the switch, when the switch is in the on state, the power supply and the switching relay form a loop, and then the power supply supplies power to the switching relay, and when the switch is in the off state, the power supply and the switching relay form an open circuit, and then the power supply does not supply power to the switching relay.
The switching relay 3 comprises a plurality of relay contact groups 31 and a relay coil 32, wherein the relay contact groups are used for connecting different test run line signal systems, and the relay coil is used for controlling the relay contact groups to be connected into the corresponding test run line signal systems; in this embodiment, the model of the switching relay is JWXC _1700, which includes 8 sets of relay contact sets, wherein, different interfaces of different test run line signal systems are connected to one end of each set of relay contact set 31, the test run line signal system includes 2 different test run line signal systems, each test run line signal system includes a plurality of interfaces, each interface is used for transmitting different types of test run signals, and the other end of each set of relay contact set is connected with the vehicle section signal system through an interface circuit. In this embodiment, 4 sets of relay contact sets are exemplified, wherein the relay contact sets are, from top to bottom: the test car lamp relay contact group comprises a test car lamp relay contact group, a first relay contact group, a second relay contact group and a third relay contact group.
Specifically, the test run line signal system in the subway signal device in this embodiment adopts dual-system redundant acquisition, and each test run line signal system is connected with two sets of relay contact sets.
Specifically, when a test is required, when the switch is closed, the power supply supplies power to the relay coil 32, the relay coil 32 is excited and drives the relay contact to form a loop with the first test line signal system 4, a test signal sent by the first test line signal system 4 is transmitted to the train section signal system through the interface circuit 6, the train section signal system sends a test permission signal, and the test permission signal is transmitted back to the first test line signal system 4 through the relay contact group to permit a train corresponding to the first test line signal system 4 to perform test operation; when the change-over switch 2 is switched off, the power supply 1 does not supply power to the relay coil 32, the relay coil 32 is demagnetized, meanwhile, a relay contact and the second test run signal system 5 form a loop, a test run signal sent by the second test run signal system 5 is transmitted to the vehicle section signal system through the interface circuit, the vehicle section signal system sends a test run permission signal, the test run permission signal is transmitted back to the second test run signal system 5 through the interface circuit 6, and a train corresponding to the second test run signal system 5 is permitted to perform test run operation. Through setting up the switching relay, and whether supply power to the relay coil through change over switch control power supply, with different test run line signal system of control relay contact group access, in order to carry out the operation of taking a trial run, it only allows a test run line signal system to send the signal of taking a trial run to have guaranteed same moment, can effectively avoid prior art to link to each other with the vehicle section system with different test run line signal system directness, and same moment different test run line signal system sends the signal of taking a trial run to vehicle section signal system simultaneously, thereby the effectual security that improves the taking a trial run.
Referring to fig. 1, each relay contact group 31 in the embodiment of the present invention includes three relay contacts, which are a first relay contact 311, a second relay contact 312, and a third relay contact 313, wherein the first relay contact 311 and the second relay contact 312 are normal contacts, and the third relay contact 313 is a moving contact. In this embodiment, a first relay contact 311 is connected to a first test line signal system 4, a second relay contact 312 is connected to a second test line signal system 5, a first end of a third relay contact 313 is connected to an interface circuit 6, a second end is connected to the first relay contact 311 or the second relay contact 312 according to a state of a switch 2, when the switch 2 is closed, a second end of the third relay contact 313 is connected to the first relay contact 311, a test signal sent by a first interface of the first test line signal system 4 is sent to a vehicle section signal system through a switch relay 3, when the switch 2 is disconnected, a second end of the third relay contact 313 is connected to the second relay contact 312, and a test signal sent by a first interface of the second test line signal system 5 is sent to the vehicle section signal system through the switch relay 3.
Specifically, as shown in fig. 1, in the embodiment of the present invention, the first test run line signal system 4 includes a first test run line signal system first interface 41, a first test run line signal system second interface 42, and a first test run line signal system third interface 43, and the second test run line signal system 5 includes a second test run line signal system first interface 51, a second test run line signal system second interface 52, and a second test run line signal system third interface 53
As shown in fig. 1, the switching device in the embodiment of the present invention further includes a test run indicator light set, where the test run indicator light is used to indicate an accessed test run line signal system, a first end of the test run indicator light set is connected to the first relay contact 311 and the second relay contact 312, and the test run indicator light is accessed according to the accessed test run line signal system, and another end of the test run indicator light set is connected to a power supply, and the power supply supplies power to the test run indicator light set at the same time. Through setting up the banks of lights of taking a trial run, the condition of taking a trial run of mastering train that can be accurate to the security of the operation of taking a trial run has been improved.
Referring to fig. 2, a first partial structure enlarged view of the switching device of the subway signal system according to the embodiment of the present invention includes a power supply 1, a relay coil 32, and a switch 2. In this embodiment, the change-over switch includes a first change-over switch contact 21 and a second change-over switch contact 22, where the first change-over switch contact 21 and the second change-over switch contact 22 are respectively disposed on two sides of the relay coil 32 and are respectively connected to the positive electrode and the negative electrode of the power supply 1, and whether the power supply supplies power to the relay coil is controlled by the state of the change-over switch contacts. Specifically, when the first switch contact 21 and the second switch contact 22 are closed simultaneously, the power supply 1 supplies power to the relay coil 32, the relay coil 32 is excited, and the second end of the third relay contact 313 is driven to be connected with the first relay contact 311, the test signal of the first test line signal system 4 is sent to the vehicle section signal system through the switch relay 3, when the first switch contact 21 and/or the second switch contact 22 are disconnected, the relay coil 32 is demagnetized, the second end of the third relay contact 313 is connected with the second relay contact 312, and the test signal of the second test line signal system 5 is sent to the vehicle section signal system through the switch relay 3. Set up to two through the contact with change over switch to set up respectively in the both sides of relay coil, when improving the operation security of taking a trial run, can also guarantee the security of change over relay work, the effectual trouble of having avoided because of change over switch single contact leads to the unable normal condition of work of change over relay.
Please refer to fig. 3, which is an enlarged view of a second partial structure of a switching device of a subway signal system according to an embodiment of the present invention, including a power supply 1, a switching relay 3, and a test run indicator light set 7. In this embodiment, the test run indicator light group 7 includes a first test run indicator light 71 and a second test run indicator light 72, wherein, in this embodiment, the first test run indicator light 71 is connected to a first relay contact 311 in a relay contact group, the second test run indicator light 72 is connected to a second relay contact 312 in the relay contact group, a third relay contact 313 in the relay contact group is connected to a power supply, when a relay coil is excited, the third relay contact 313 is connected to the first relay contact 311, the first test run indicator light is on, when the relay coil is demagnetized, the third relay contact 313 is connected to the second relay contact 311, and the second test run indicator light is on. Through linking to each other pilot lamp group with switching relay with the taking a trial run, can make the condition of mastering the taking a trial run that the staff can be accurate, guarantee when having the train to take a trial run, other signals of taking a trial run can't be sent, have guaranteed the safety of the operation of taking a trial run.
With reference to fig. 4, a third partial structure enlarged view of the switching device of the subway signal system according to the embodiment of the present invention includes a vehicle section signal system 8, an interface circuit 6, a first test line signal system 4, and a second test line signal system 5. In this embodiment, the first test run signal system 4 includes a first test run signal system first interface, a first test run signal system second interface, and a first test run signal system third interface, and the second test run signal system 5 includes a second test run signal system first interface, a second test run signal system second interface, and a second test run signal system third interface, where different interfaces in each test run signal system are used to transmit different types of test run signals.
In the embodiment of the invention, one interface in each test run line signal system is connected with one relay contact group, and the difference value between the number of the interfaces in the test run line signal system and the number of the relay contact groups is 1. Specifically, the relay contact set is connected to a vehicle section signaling system 8 via an interface circuit 6. When a test run is required, the change-over switch 2 controls whether the power supply supplies power to the relay coil 32 according to a test run signal system which needs to send a test run signal, when the test run signal system which needs to send the test run signal is the first test run signal system 4, the change-over switch is closed, the power supply supplies power to the relay coil 32, the relay coil 32 is excited, and drives the third relay contact 313 in the first relay contact group, the second relay contact group and the third relay contact group to be closed with the first relay contact 311, at this time, a test run request signal of a first interface of the first test run signal system 4 passes through the change-over relay 3 and is transmitted to the vehicle section signal system 8 through the interface circuit, the vehicle section signal system 8 sends a test run permitting signal to a second interface of the first test run signal system 4 through the interface circuit 6, other signals sent by the vehicle section signal system are sent to a third interface of the first test line signal system 4 through an interface circuit 6; when the test line signal system needing to send the test signal is the second test line signal system 5, the change-over switch is turned off, the power supply does not supply power to the relay coil 32, the relay coil 32 demagnetizes, and drives the third relay contact 313 and the second relay contact 312 in the first relay contact group, the second relay contact group and the third relay contact group to be closed, at this time, a test signal request sent by the first interface of the second test line signal system 5 passes through the change-over relay 3 and is transmitted to the vehicle section signal system 8 through the interface circuit, the vehicle section signal system 8 sends a signal allowing test running to the second interface of the second test line signal system 5 through the interface circuit 6, and other signals sent by the vehicle section signal system are sent to the third interface of the second test line signal system 5 through the interface circuit 6.
Specifically, in the embodiment of the present invention, one switching relay is connected to a test run signal system capable of transmitting 3 different types of test run signals at most, and when the types of test run signals transmitted by the test run signal system are greater than three groups, a plurality of relays need to be connected. Specifically, after the relay coils of the plurality of switching relays are connected in parallel, the plurality of switching relays connected in parallel are connected with the switching switch, so that the number of the transmission types of the test run signals is increased. Meanwhile, any one of the normal contacts of the relay connected with the test run indicator lamp in each switching relay is connected with the power supply and the test run indicator lamp.
Specifically, the embodiment of the invention also provides subway signal system switching equipment which comprises the switching device, wherein the equipment further comprises a test car tray and a combination cabinet. In this embodiment, will try on a car and instruct banks and change over switch setting on the dish of trying on a car, will switch over relay and power supply and set up in the assembled cabinet.
Specifically, in a common test run section line, firstly, the number of types of test run signals required to be sent by each test run signal system is counted, and corresponding number of switching relays are selected according to the number of types of test run signals required to be sent by each test run signal system, wherein the test run signal systems are used for sending test run signals, the vehicle section signal systems are used for sending test run permission signals according to the received test run signals, and when the test run signal systems receive the test run permission signals, corresponding trains are controlled to perform test run operation; after the number of the types of the test signals required to be sent by each test line signal system is determined, selecting a corresponding number of switching relays according to the number of the types of the test signals required to be sent by each test line signal system, wherein the number ratio of the switching relays to the types of the test line signals is 1: 3; and when the number of the required switching relays is more than 1, the relay coils of all the switching relays are connected in parallel.
Specifically, after the number of the switching relays is determined, each group of test run signal systems is connected into a relay contact group in the switching relays, each relay contact group connected with the test run signal system group is connected into an interface circuit, and meanwhile, the interface circuit is connected into a vehicle section signal system. In this embodiment, the switching relay is preferably installed in the existing combination cabinet of the test run line, and may also be installed in other vacant positions of the test run line equipment room.
Specifically, when the test line signal system is connected, the power supply forms a loop through the relay coil of the change-over switch and the change-over relay, and the change-over switch is manually controlled by a worker to control whether the power supply supplies power to the change-over relay or not, so that the single connection of different test line signal systems in the test line signal system group is completed. In this embodiment, preferably, the change-over switch is arranged on the test run panel, and the operator operates the change-over switch on the test run panel to select the accessed test run line signal system, so as to perform the test run operation.
Specifically, still install the pilot lamp group of taking a trial run on the dish of taking a trial run, the pilot lamp group of taking a trial run includes 2 pilot lamps of taking a trial run, and the colour of every pilot lamp of taking a trial run is different for instruct the operating condition of taking a trial run signal system. In the device provided by the embodiment of the invention, the first end of the pilot lamp group is connected into the relay contact group in the switching relay, and the second end is connected into the power supply. When the accessed test run line signal system sends a change, the corresponding test run indicator lamp also changes correspondingly. When the number of switching relays is greater than 1. And connecting any one of the normal contacts of the relay connected with the test run indicator lamp in each switching relay, and then connecting the switching relay with the power supply and the test run indicator lamp.
Specifically, when the accessed test run line signal systems are an X test run line signal system and a Y test run line signal system respectively, the first test run indicator lamp is used for indicating the work of the X test run line signal system, and the second test run indicator lamp is used for indicating the work of the Y test run line signal system. When an X test run line signal system needs to be accessed, a worker manually operates a change-over switch on a test run disc to enable a power supply source to supply power to a change-over relay, and then the X test run line signal system and the change-over relay, an interface circuit and a vehicle section signal system form a loop, the X test run line signal system can send a test run signal and receive a test run allowing signal, the vehicle section signal system can receive the test run signal and send test run allowing information, and therefore test run operation is conducted. When the X test run line signal system finishes test run operation or needs to be accessed into the Y test run line signal system, a worker operates a change-over switch on a test run disc to enable the change-over switch to be in an off state, at the moment, the Y test run line signal system, a change-over relay, an interface circuit and a vehicle section signal system form a loop, the Y test run line signal system can send test run signals and receive test run permission signals, and the vehicle section signal system can receive the test run signals and send the test run permission information to conduct test run operation.
Specifically, the subway signal switching equipment provided by the embodiment of the invention can ensure that only one test run signal is accessed at the same time when the test run operation is performed, thereby ensuring the safety of the test run operation, and simultaneously effectively avoiding the situation that different test run signal systems simultaneously receive permission for test run due to the fact that different test run signal systems simultaneously access a vehicle section signal system in the prior art. Meanwhile, the subway signal switching equipment provided by the embodiment of the invention can be reconstructed by using the existing equipment, a new cabinet is not required, the area of an equipment machine room is not required to be increased, the change-over switch and the test run indicator lamp can be shared with the existing test run disk, the switching relay can be arranged at the vacant combination position of the existing combination cabinet, and the interface circuit switching of two shared test run lines is completed under the condition that the floor area of a signal system is not increased.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A subway signal system switching apparatus, comprising: the power supply, the switching relay and the switching switch are arranged on the power supply;
the power supply is used for supplying power to the switching relay;
the change-over switch is used for controlling whether the power supply supplies power to the change-over relay or not, wherein a first end of the change-over switch is connected with the power supply, and a second end of the change-over switch is connected with the change-over relay;
the switching relay is used for switching the accessed test line signal system, wherein the switching relay comprises a relay contact group and a relay coil, and the relay coil is used for controlling the relay contact group to be accessed into the corresponding test line signal system according to the state of the switching switch.
2. A subway signal system switching device as claimed in claim 1, further comprising a test run indicator for indicating the state of said switch, wherein a first end of said test run indicator is connected to said relay contact set, and another end of said test run indicator is connected to said power supply.
3. A subway signal system switching device as claimed in claim 1, wherein said relay contact set includes a first relay contact, a second relay contact and a third relay contact, wherein said first relay contact and said second relay contact are normal contacts and said third relay contact is a moving contact.
4. A subway signal system switching device as claimed in claim 1, wherein said diverter switch includes a first diverter switch contact and a second diverter switch contact, wherein said first diverter switch contact and said second diverter switch contact are respectively disposed on both sides of said relay coil.
5. A subway signal system switching device as claimed in claim 1, wherein said power supply is a dc power supply.
6. A subway signal system switching device as claimed in claim 1, wherein said switching device includes at least one said switching relay.
7. A subway signal system switching device as claimed in claim 6, wherein when said switching relay is plural in number, relay coils of plural said switching relays are connected to said changeover switch in parallel.
8. A subway signal system switching device as claimed in claim 3, wherein said first relay contact is connected to a first test line signal system for transmitting a signal transmitted by said first test line signal system when said first relay contact is closed, said second relay contact is connected to a second test line signal system for transmitting a signal transmitted by said second test line signal system when said second relay contact is closed, and said third relay contact is connected to an interface circuit for transmitting a signal transmitted by said first test line signal system or said second test line signal system.
9. A switching apparatus of a subway signal system, comprising the switching device as claimed in any one of claims 1 to 8, and further comprising a test run panel and a combination cabinet, wherein said changeover switch and said test run indicator lamp are provided on said test run panel, and said power supply source and said switching relay are provided in said combination cabinet.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115092223A (en) * | 2022-06-30 | 2022-09-23 | 中铁工程设计咨询集团有限公司 | Reverse cutting equipment for rail transit signal system |
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