An electrical fault handling system for rail transit switches

Abstract

The present invention discloses an electrical fault handling system for a rail transit turnout, belonging to the technical field of rail transit, which includes a main turnout combination, a standby turnout combination, a first traction point switch machine for pulling the tip part of the turnout switch rail, a second traction point switch machine for pulling the rear end part of the turnout switch rail, a relay module, and a turnout redundancy switching system. The main turnout combination, the standby turnout combination, the first traction point switch machine, the second traction point switch machine, and the turnout redundancy switching system are all electrically connected to the relay module.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit, and particularly relates to an electrical fault processing system for a rail transit turnout. Background Art

[0002] The rail transit turnout equipment is a key equipment related to the safety and punctuality of subway operation services. A turnout failure will directly affect the transportation efficiency of the subway.

[0003] The rail transit turnout equipment generally consists of an interlocking acquisition and drive part, an indoor relay control combination, an outdoor switch machine, and connecting cables for each part. Therefore, the factors causing turnout failures are relatively complex and there are many intermediate links. Taking the double-machine traction turnout, which is the most widely used in domestic subways, as an example: a set of double-machine traction turnout indoor relay combinations includes two 1DQJs (one turnout start relay), two 1DQJFs (one turnout start auxiliary relay), two 2DQJs (two turnout start relays), two BHJs (protection relays), two DBQs (phase failure protectors), two DBJs (normal position indication relays), two FBJs (reverse position indication relays), two R1s (turnout indication resistors), one ZDBJ (total normal position indication relay), one ZFBJ (total reverse position indication relay), one QDJ (cut-off relay), one RC (cut-off relay capacitor resistor), one ZBHJ (total protection relay), one DCJ (normal operation relay), one FCJ (relay), one SJ (locking relay), plus two 5A circuit breakers (action power circuit breakers) and two 0.5A circuit breakers (indication power circuit breakers). In addition to these devices, it also includes hundreds or thousands of wires and contacts connecting these devices, as well as the connecting cables between the control room and the switch machine in the tunnel. Any problem occurring in any place will cause the turnout to issue a fault alarm. At the same time, the fault points in each link are hidden on each component and its contacts. Common fault phenomena include "indication flashing off", "not turning in place", "losing indication", etc. When an alarm occurs, it is necessary to immediately allocate manpower to conduct fault investigation. The difficulty of fault analysis and investigation is relatively large, and the affected time is relatively long during the daily operation of the subway, seriously affecting the subway service quality.

[0004] In view of the impact of turnout failures on rail transit operations, in recent years, in the national vocational skills competition for urban rail transit signal workers jointly organized by relevant ministries and commissions, the turnout fault investigation competition has been used as a practical operation compulsory link. At the same time, signal workers' skills competitions of different levels are also held irregularly by provinces, cities and subway operation units, and the turnout fault investigation and handling are also used as a practical operation compulsory link. Therefore, whether the investigation and handling of turnout faults can be carried out quickly and accurately has become a key element for testing a qualified rail transit signal worker, and it is also a key indicator reflecting the high or low business level of signal workers.

[0005] However, in recent years, the rail transit industry has developed rapidly. The technical capabilities of signal professionals have been diluted, and the cultivation of the professional capabilities of practitioners lags far behind the speed of the opening of newly built rail transit lines. Therefore, during the daily operation of the subway, faults may occur at any time. It is common that the professional skills, psychology, and other factors of fault handlers affect the fault repair situation.

[0006] In addition, in terms of equipment influencing factors, as a key equipment for the stable operation of the subway, the signal system, including interlocking systems, ATP / ATO systems, power supplies, networks, and other equipment, has redundant functions at different levels such as cold standby, hot standby, two-out-of-three, and two-by-two-out-of-two to increase its reliability. On the contrary, the switch equipment, which is also a key signal equipment affecting the stable operation of the subway, has no redundant features even after development to date. This is another important factor that affects the stable operation of the subway whenever a switch fault occurs.

[0007] The most vulnerable part where switch faults occur frequently is the relay circuit combination part in the equipment room. There are the most components, the most complex structure, and the most frequent operations here. Adding redundant functions here can complete the switch in a timely manner when a fault occurs, isolate the faulty switch components, ensure the functions of the switch, and ensure the stability during the rail transit operation period. After the operation ends, the fault can be repaired. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a rail transit switch electrical fault handling system that can handle switch faults in a short time and ensure the normal operation of rail transit.

[0009] To solve the above technical problem, the technical solution of the present invention is as follows:

[0010] A rail transit switch electrical fault handling system includes a main switch combination, a standby switch combination, a first traction point switch machine for pulling the tip part of the switch tongue, a second traction point switch machine for pulling the rear end part of the switch tongue, a relay module, and a switch redundancy switching system. The main switch combination, the standby switch combination, the first traction point switch machine, the second traction point switch machine, and the switch redundancy switching system are all electrically connected to the relay module.

[0011] Preferably, the standby switch combination includes a standby switch control circuit, a standby first traction point switch machine action circuit, a standby second traction point switch machine action circuit, and a standby switch indication information interlocking acquisition circuit. The standby first traction point switch machine action circuit and the standby second traction point switch machine action circuit are both electrically connected to the standby switch control circuit. The standby first traction point switch machine action circuit and the standby second traction point switch machine action circuit are both electrically connected to the standby switch indication information acquisition circuit. The main switch combination includes a main switch control circuit, a main first traction point switch machine action circuit, a main second traction point switch machine action circuit, and a main switch indication information interlocking acquisition circuit. The main first traction point switch machine action circuit and the main second traction point switch machine action circuit are both electrically connected to the main switch control circuit. The main first traction point switch machine action circuit and the main second traction point switch machine action circuit are both electrically connected to the main switch indication information interlocking acquisition circuit.

[0012] Preferably, the standby first traction point switch machine action circuit includes a first traction point phase failure protector, a first traction point switch No. 1 start relay, a first traction point switch No. 1 start auxiliary relay, and a first traction point switch No. 2 start relay. The A phase of the first traction point phase failure protector is electrically connected to the standby first traction point switch machine action circuit through the first traction point switch No. 1 start relay. The B phase of the first traction point phase failure protector is connected to the first traction point switch No. 2 start relay through the first traction point switch No. 1 start auxiliary relay. The C phase of the first traction point phase failure protector is connected to the first traction point switch No. 2 start relay through the first traction point switch No. 1 start auxiliary relay. The first traction point switch No. 2 start relay is electrically connected to the standby first traction point switch machine action circuit. A first B-phase electric changeover relay is provided between the B phase of the first traction point phase failure protector and the first traction point switch No. 1 start auxiliary relay. A first C-phase electric changeover relay is provided between the C phase of the first traction point phase failure protector and the first traction point switch No. 1 start auxiliary relay.

[0013] Preferably, the spare second traction point switch machine action circuit includes a second traction point phase failure protector, a first start relay for the second traction point switch, a first start auxiliary relay for the second traction point switch, and a second start relay for the second traction point switch. The A phase of the second traction point phase failure protector is electrically connected to the spare second traction point switch machine action circuit through the first start relay for the second traction point switch. The B phase of the second traction point phase failure protector is connected to the second start relay for the second traction point switch through the first start auxiliary relay for the second traction point switch. The C phase of the second traction point phase failure protector is connected to the second start relay for the second traction point switch through the first start auxiliary relay for the second traction point switch. The second start relay for the second traction point switch is electrically connected to the spare second traction point switch machine action circuit. A second B-phase electrical changeover relay is provided between the B phase of the second traction point phase failure protector and the first start auxiliary relay for the second traction point switch. A second C-phase electrical changeover relay is provided between the C phase of the second traction point phase failure protector and the first start auxiliary relay for the second traction point switch.

[0014] Preferably, a plurality of first B-phase power connection relays are connected in series between the B phase of the first traction point phase failure protector and the B phase of the power supply. A plurality of first C-phase power connection relays are connected in series between the C phase of the first traction point phase failure protector and the C phase of the power supply. A plurality of second B-phase power connection relays are connected in series between the B phase of the second traction point phase failure protector and the B phase of the power supply. A plurality of second C-phase power connection relays are connected in series between the C phase of the second traction point phase failure protector and the C phase of the power supply.

[0015] Preferably, the relay module includes a first main / standby changeover relay module. The main first traction point switch machine action circuit and the spare first traction point switch machine action circuit are connected through the first main / standby changeover relay module. The first main / standby changeover relay module includes a plurality of first main / standby changeover relays. The normally closed contact of any one of the first main / standby changeover relays is electrically connected to the main first traction point switch machine action circuit. The normally open contact of any one of the first main / standby changeover relays is electrically connected to the spare first traction point switch machine action circuit. The common contact of any one of the first main / standby changeover relays is electrically connected to the first traction point switch machine.

[0016] Preferably, the relay module further includes a second main / standby switching relay module. The main second point machine action circuit and the standby second point machine action circuit are connected through the second main / standby switching relay module. The second main / standby switching relay module includes a number of second main / standby switching relays. The normally closed contact of any one of the second main / standby switching relays is electrically connected to the main second point machine action circuit, the normally open contact of any one of the second main / standby switching relays is electrically connected to the standby second point machine action circuit, and the common contact of any one of the second main / standby switching relays is electrically connected to the second point machine.

[0017] Preferably, the relay module includes a control switching relay module. The control switching relay module is arranged between the standby switch control circuit and the main switch control circuit. The control switching relay module includes a number of control switching relays. The normally open contact of any one of the control switching relays is electrically connected to the standby switch control circuit, and the normally closed contact and the common contact of any one of the control switching relays are both electrically connected to the main switch control circuit.

[0018] Preferably, the relay module further includes a indication information switching relay module. The indication information switching relay module is arranged between the standby switch indication information interlocking acquisition circuit and the main switch indication information interlocking acquisition circuit. The indication information switching relay module includes a number of indication information switching relays. The normally open contact of any one of the indication information switching relays is electrically connected to the standby switch indication information interlocking acquisition circuit, the normally closed contact of any one of the indication information switching relays is electrically connected to the main switch indication information interlocking acquisition circuit, and the common contact of any one of the indication information switching relays is electrically connected to the railway interlocking system acquisition board.

[0019] Adopting the above technical solutions, the beneficial effects are as follows:

[0020] By setting the standby switch combination, when the main switch combination fails, it can be switched to the standby switch combination to control the normal operation of the point machine;

[0021] By setting the relay module, when switching to the standby switch combination, the relays that need to act during the switching process can act simultaneously, and the main switch combination can be safely and accurately switched to the standby switch combination;

[0022] By setting the switch redundancy switching system, controlling the relay module to complete the action, the main switch combination is successfully switched to the standby switch combination. Description of the Drawings

[0023] Figure 1It is the structural principle block diagram of the present invention;

[0024] Figure 2 It is the plan layout diagram of the relay module of the present invention;

[0025] Figure 3 It is the structural block diagram of the circuit connection between the standby switch combination and the main switch combination of the present invention;

[0026] Figure 4 It is the connection diagram of the standby switch control circuit of the present invention;

[0027] Figure 5 It is the connection diagram of the main switch control circuit of the present invention;

[0028] Figure 6 It is the action circuit diagram of the switch machine at the first traction point of the standby switch of the present invention;

[0029] Figure 7 It is the action circuit diagram of the switch machine at the second traction point of the standby switch of the present invention;

[0030] Figure 8 It is the action circuit diagram of the switch machine at the first traction point of the main switch of the present invention;

[0031] Figure 9 It is the action circuit diagram of the switch machine at the second traction point of the main switch of the present invention;

[0032] Figure 10 It is the acquisition circuit diagram of the indication information of the standby switch by the interlocking host of the present invention;

[0033] Figure 11 It is the acquisition circuit diagram of the indication information of the standby switch by the interlocking slave of the present invention;

[0034] Figure 12 It is the acquisition circuit diagram of the indication information of the main switch by the interlocking host of the present invention;

[0035] Figure 13 It is the acquisition circuit diagram of the indication information of the main switch by the interlocking slave of the present invention;

[0036] Figure 14 It is the software control operation interface diagram of the present invention. Specific embodiments

[0037] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted here that the description of these embodiments is for helping to understand the present invention, but does not constitute a limitation to the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] Such as Figure 1As shown in the figure, it is the structural principle block diagram of the present invention. The rail transit switch electrical fault handling system includes a main switch combination, a standby switch combination, a first traction point switch machine for pulling the tip part of the switch tongue, a second traction point switch machine for pulling the rear end part of the switch tongue, a relay module, and a switch redundancy switching system. The main switch combination, the standby switch combination, the first traction point switch machine, the second traction point switch machine, and the switch redundancy switching system are all electrically connected to the relay module;

[0039] The main switch combination is equipped with the same number of main switch combinations as the number of switches configured for the station line where it is located. One set of standby switch combinations can be set at each station for standby switching to all the main switch combinations in the station where it is located. The main switch combination and the standby switch combination complete the switching through the relay module. The switch redundancy switching system can be communicatively connected to the relay module through RS485 / USB. The relay module is powered by a 24VDC power supply. By setting the standby switch combination, when any problem occurs in the main switch combination, the control of the switch machine of the outdoor switch by the main switch combination can be cut off, and the control is switched to the standby switch combination to control the normal operation of the outdoor switch machine, ensuring the normal operation of the rail transit switch;

[0040] The standby switch combination includes a standby switch control circuit, a standby first traction point switch machine action circuit, a standby second traction point switch machine action circuit, and a standby switch indication information interlocking acquisition circuit. The standby first traction point switch machine action circuit and the standby second traction point switch machine action circuit are both electrically connected to the standby switch control circuit. The standby first traction point switch machine action circuit and the standby second traction point switch machine action circuit are both electrically connected to the standby switch indication information acquisition circuit. The main switch combination includes a main switch control circuit, a main first traction point switch machine action circuit, a main second traction point switch machine action circuit, and a main switch indication information interlocking acquisition circuit. The main first traction point switch machine action circuit and the main second traction point switch machine action circuit are both electrically connected to the main switch control circuit. The main first traction point switch machine action circuit and the main second traction point switch machine action circuit are both electrically connected to the main switch indication information interlocking acquisition circuit;

[0041] The action circuit of the spare first traction point switch machine includes a first traction point phase failure protector, a first traction point switch No. 1 start relay, a first traction point switch No. 1 start auxiliary relay, and a first traction point switch No. 2 start relay. The A phase of the first traction point phase failure protector is electrically connected to the action circuit of the spare first traction point switch machine through the first traction point switch No. 1 start relay. The B phase of the first traction point phase failure protector is connected to the first traction point switch No. 2 start relay through the first traction point switch No. 1 start auxiliary relay. The C phase of the first traction point phase failure protector is connected to the first traction point switch No. 2 start relay through the first traction point switch No. 1 start auxiliary relay. The first traction point switch No. 2 start relay is electrically connected to the action circuit of the spare first traction point switch machine. A first B-phase electrical change-over relay is provided between the B phase of the first traction point phase failure protector and the first traction point switch No. 1 start auxiliary relay. A first C-phase electrical change-over relay is provided between the C phase of the first traction point phase failure protector and the first traction point switch No. 1 start auxiliary relay;

[0042] The action circuit of the spare second traction point switch machine includes a second traction point phase failure protector, a second traction point switch No. 1 start relay, a second traction point switch No. 1 start auxiliary relay, and a second traction point switch No. 2 start relay. The A phase of the second traction point phase failure protector is electrically connected to the action circuit of the spare second traction point switch machine through the second traction point switch No. 1 start relay. The B phase of the second traction point phase failure protector is connected to the second traction point switch No. 2 start relay through the second traction point switch No. 1 start auxiliary relay. The C phase of the second traction point phase failure protector is connected to the second traction point switch No. 2 start relay through the second traction point switch No. 1 start auxiliary relay. The second traction point switch No. 2 start relay is electrically connected to the action circuit of the spare second traction point switch machine. A second B-phase electrical change-over relay is provided between the B phase of the second traction point phase failure protector and the second traction point switch No. 1 start auxiliary relay. A second C-phase electrical change-over relay is provided between the C phase of the second traction point phase failure protector and the second traction point switch No. 1 start auxiliary relay;

[0043] A number of first B-phase power connection relays are connected in series between the B phase of the first traction point phase failure protector and the B phase of the power supply. A number of first C-phase power connection relays are connected in series between the C phase of the first traction point phase failure protector and the C phase of the power supply. A number of second B-phase power connection relays are connected in series between the B phase of the second traction point phase failure protector and the B phase of the power supply. A number of second C-phase power connection relays are connected in series between the C phase of the second traction point phase failure protector and the C phase of the power supply;

[0044] The relay module includes a first main / backup switching relay module. The active first traction point switch machine operation circuit and the standby first traction point switch machine operation circuit are connected through the first main / backup switching relay module. The first main / backup switching relay module includes several first main / backup switching relays. The normally closed contact of any one of the first main / backup switching relays is electrically connected to the active first traction point switch machine operation circuit, the normally open contact of any one of the first main / backup switching relays is electrically connected to the standby first traction point switch machine operation circuit, and the common contact of any one of the first main / backup switching relays is electrically connected to the first traction point switch machine;

[0045] The relay module further includes a second main / backup switching relay module. The active second traction point switch machine operation circuit and the standby second traction point switch machine operation circuit are connected through the second main / backup switching relay module. The second main / backup switching relay module includes several second main / backup switching relays. The normally closed contact of any one of the second main / backup switching relays is electrically connected to the active second traction point switch machine operation circuit, the normally open contact of any one of the second main / backup switching relays is electrically connected to the standby second traction point switch machine operation circuit, and the common contact of any one of the second main / backup switching relays is electrically connected to the second traction point switch machine;

[0046] The relay module includes a control switching relay module. The control switching relay module is arranged between the standby switch control circuit and the active switch control circuit. The control switching relay module includes several control switching relays. The normally open contact of any one of the control switching relays is electrically connected to the standby switch control circuit, and the normally closed contact and the common contact of any one of the control switching relays are both electrically connected to the active switch control circuit;

[0047] The relay module further includes an indication information switching relay module. The indication information switching relay module is arranged between the standby switch indication information interlocking acquisition circuit and the active switch indication information interlocking acquisition circuit. The indication information switching relay module includes several indication information switching relays. The normally open contact of any one of the indication information switching relays is electrically connected to the standby switch indication information interlocking acquisition circuit, the normally closed contact of any one of the indication information switching relays is electrically connected to the active switch indication information interlocking acquisition circuit, and the common contact of any one of the indication information switching relays is electrically connected to the railway interlocking system acquisition board;

[0048] Such as Figure 2As shown in the figure, it is the layout plan of the relay module of the present invention. The relays on the relay module adopt three-contact relays, namely common contacts, normally closed contacts, and normally open contacts. The relays on the relay module are divided by function into the first main-backup switching relay module, the second main-backup switching relay module, the control switching relay module, the indication information switching relay module, as well as the power-on relay and the phase-changing relay. When the relay on the relay module is in the state of the coil being powered off, the normally closed contact of the relay is closed. When the relay is energized, it is attracted, the normally closed contact of the relay is disconnected, and the normally open contact of the relay is closed.

[0049] Among them, the normally open contact of any relay in the first main-backup switching relay module, the second main-backup switching relay module, the control switching relay module, and the indication information switching relay module is connected to the standby turnout combination, and the normally closed contact of any relay is connected to the main turnout combination. The switching control between the standby turnout combination and the main turnout combination is completed through the relay module.

[0050] Among them, the power-on relay and the phase-changing relay are connected in series in the standby turnout combination. The common contact of any power-on relay is connected to the power supply, and the normally open contact is connected to the power input end of the standby turnout action circuit, that is, the normally open contact is connected to the primary side of the DBQ (phase failure protector). The power-on relays are connected in parallel with each other.

[0051] Among them, the common contact of any phase-changing relay is connected to the power output end of the standby turnout action circuit, that is, the common contact is connected to the secondary side of the DBQ (phase failure protector). The normally closed contact is connected to the same phase of the three-phase power supply, and the normally open contact is connected to the normally closed contact of the phase-changing relay of another phase (phase B or phase C).

[0052] When the relay module is in the power-off state, the main turnout combination is connected to work through the normally closed contacts of the relays in the relay module to complete the circuit connection under normal circumstances. When the state of the relay coil in the relay module is changed to make the relay coil in the relay module continuously energized, the normally open contact of the relay is closed, and the normally closed contact of the relay is disconnected. At the same time, the normally open contact connects the standby turnout combination, and the normally closed contact disconnects the main turnout combination to complete the switching from the main turnout combination to the standby turnout combination. Each relay on the relay module is used to control a corresponding switching point. When multiple relays are integrated in the relay module, when a command is sent to the relay module, the synchronous action of multiple relays can be realized, and the mutual switching between the main turnout combination and the standby turnout combination composed of multiple groups of circuits can be realized.

[0053] The present invention uses a multi-channel relay module to control the switching of each switching point between the standby turnout combination and the main turnout combination with an independent relay. Among them, each set of main turnout control circuits and standby turnout control circuits requires 3 control switching relays; the switch machine action circuit within each set of standby turnout combinations requires 2 B-phase power connection relays and 2 C-phase power connection relays, where 1 is used as the B-phase power connection relay for the first traction point, 1 is used as the C-phase power connection relay for the first traction point, 1 is used as the B-phase power connection relay for the second traction point, and 1 is used as the C-phase power connection relay for the second traction point; the switch machine action circuit within each set of standby turnout combinations requires 2 B-phase phase change relays and 2 C-phase phase change relays, where 1 is used for the phase change from B-phase to C-phase for the first traction point, 1 is used for the phase change from C-phase to B-phase for the first traction point, 1 is used for the phase change from B-phase to C-phase for the second traction point, and 1 is used for the phase change from C-phase to B-phase for the second traction point; the first main-to-standby switching relay module includes 5 first main-to-standby switching relays, and the second main-to-standby switching relay module includes 5 second main-to-standby switching relays, where 5 first main-to-standby switching relays are used as the switching relays for the switch machine action circuit of the first traction point, and the other 5 second main-to-standby switching relays are used as the switching relays for the switch machine action circuit of the second traction point; the indication information switching relay module requires 8 indication information switching relays, where 4 are used for the switching of the interlocking host acquisition circuit and the other 4 are used for the switching of the interlocking slave acquisition circuit; in summary, a total of 29 independent relays are required to control the switching of each switching point between the standby turnout combination and the main turnout combination. Therefore, using a fixed 32-channel relay module can achieve the synchronous operation of all switching points;

[0054] As Figure 3 shown, it is a structural block diagram of the circuit connection between the standby turnout combination and the main turnout combination of the present invention. The standby turnout combination internally includes a standby turnout control circuit, a standby first traction point switch machine action circuit, a standby second traction point switch machine action circuit, and a standby turnout indication information interlocking acquisition circuit. The standby turnout indication information interlocking acquisition circuit includes a standby turnout indication information interlocking host acquisition circuit and a standby turnout indication information interlocking slave acquisition circuit. The standby first traction point switch machine action circuit and the standby second traction point switch machine action circuit are both electrically connected to the standby turnout control circuit, the standby first traction point switch machine action circuit and the standby second traction point switch machine action circuit are both electrically connected to the standby turnout indication information interlocking host acquisition circuit, and the standby first traction point switch machine action circuit and the standby second traction point switch machine action circuit are both electrically connected to the standby turnout indication information interlocking slave acquisition circuit;

[0055] The spare switch combination internally includes a spare switch control circuit, a spare first-point switch machine operation circuit, a spare second-point switch machine operation circuit, a spare switch indication information interlocking host acquisition circuit, and a spare switch indication information interlocking slave acquisition circuit. The spare first-point switch machine operation circuit and the spare second-point switch machine operation circuit are controlled by the spare switch control circuit. The spare first-point switch machine operation circuit controls the operation of the first-point switch machine, and the spare second-point switch machine operation circuit controls the operation of the second-point switch machine, completing the simultaneous start, conversion, and locking of the first and second traction points. The control circuits for the first and second traction points must be synchronized, so the spare switch control circuit is used for control;

[0056] The main switch combination internally includes a main switch control circuit, a main first-point switch machine operation circuit, a main second-point switch machine operation circuit, and a main switch indication information interlocking acquisition circuit. The main switch indication information interlocking acquisition circuit includes a main switch indication information interlocking host acquisition circuit and a main switch indication information interlocking slave acquisition circuit. The main first-point switch machine operation circuit and the main second-point switch machine operation circuit are both electrically connected to the main switch control circuit, the main first-point switch machine operation circuit and the main second-point switch machine operation circuit are both electrically connected to the main switch indication information interlocking host acquisition circuit, and the main first-point switch machine operation circuit and the main second-point switch machine operation circuit are both electrically connected to the main switch indication information interlocking slave acquisition circuit;

[0057] As Figure 4 shown, it is the connection diagram of the spare switch control circuit of the present invention. There are 3 control switching relays provided between the spare switch control circuit and the main switch control circuit. The 3 control switching relays are used to switch between the spare switch control circuit and the main switch control circuit. The control switching relays act when it is necessary to switch the main switch control circuit to the spare switch control circuit, and switch the turnout positioning operation relay, turnout reverse position operation relay, and turnout locking relay commands in the main switch control circuit to the spare switch control circuit, serving as the command conditions for the turnout positioning conversion command, turnout reverse position conversion command, and turnout locking command in the spare switch control circuit.

[0058] The common contact of the control switching relay connects to the command operation relays in the main switch control circuit, namely the turnout positioning operation relay, the turnout reverse position operation relay, and the turnout locking relay. The normally closed contact of the control switching relay connects to the main switch control circuit, and the normally open contact of the control switching relay connects to the spare switch control circuit;

[0059] As Figure 5As shown in the figure, it is the connection diagram of the main switch control circuit of the present invention. The number of main switch combinations is equal to the number of station switches. Each set of switches is equipped with a set of main switch combinations. The main switch control circuit in the main switch combination uses the existing switch control circuit of the station where it is located. In the present invention, the common contacts of the control switching relay are connected in series on the switch positioning operation relay, the switch reverse position operation relay and the switch locking relay in the existing switch control circuit of each set of switches. The normally closed contacts of the control switching relay are then connected to the existing switch control circuit. For example, the first set of switch control circuits, the second set of switch control circuits, up to the Nth set of switch control circuits. The normally open contacts of the control switching relays with the same function are connected in parallel in sequence and then connected to the switch control circuit in the standby switch combination. When the normally closed contacts of the control switching relay are closed, the first set of switch control circuits, the second set of switch control circuits, up to the Nth set of switch control circuits complete corresponding actions through the switch positioning operation relay, the switch reverse position operation relay and the switch locking relay in this switch control circuit. When it is necessary to switch one of the sets of switches to the standby switch control circuit, the three control switching relays used to switch the switch control circuit of this group act synchronously. The control switching relay disconnects the normally closed contacts and connects the normally open contacts. At this time, the standby switch control circuit is connected to the switch positioning operation relay, the switch reverse position operation relay and the switch locking relay in one of the main switch control circuits, executes the commands from one of the main switch control circuits and completes the corresponding actions;

[0060] As Figure 6 , Figure 7 shown, Figure 6 is the action circuit diagram of the first traction point switch machine of the standby switch of the present invention, Figure 7 is the action circuit diagram of the second traction point switch machine of the standby switch of the present invention. The action circuit of the standby first traction point switch machine is designed in the same way as the action circuit of the first traction point switch machine of any switch in the station where it is located, and the structure and action principle are the same. The action circuit of the standby first traction point switch machine includes a first traction point phase failure protector, a first traction point switch one start relay, a first traction point switch one start auxiliary relay and a first traction point switch two start relay. The A phase of the first traction point phase failure protector is connected to line 1 of the action circuit of the standby first traction point switch machine ( Figure 6 X1 line in it) through the first traction point switch one start relay. The B phase of the first traction point phase failure protector is connected to the first traction point switch two start relay through the first traction point switch one start auxiliary relay. The C phase of the first traction point phase failure protector is connected to the first traction point switch two start relay through the first traction point switch one start auxiliary relay. The first traction point switch two start relay is connected to line 2 ( Figure 6 X2 line in it), line 3 ( Figure 6 X3 line in it), line 4 (Figure 6 in the X4 line), line 5( Figure 6 is connected to the X5 line in the middle);

[0061] The action circuit of the spare second traction point switch machine adopts the same design as the action circuit of the traction point switch machine of any turnout in the station where it is located, and the structure and action principle are kept consistent. The action circuit of the spare second traction point switch machine includes a second traction point phase failure protector, a first starting relay for the first turnout of the second traction point, a first starting auxiliary relay for the first turnout of the second traction point, and a second starting relay for the second turnout of the second traction point. The A phase of the second traction point phase failure protector is connected to line 1( Figure 7 in the X1 line) of the action circuit of the spare second traction point switch machine through the first starting relay for the first turnout of the second traction point. The B phase of the second traction point phase failure protector is connected to the second starting relay for the second turnout of the second traction point through the first starting auxiliary relay for the first turnout of the second traction point. The C phase of the second traction point phase failure protector is connected to the second starting relay for the second turnout of the second traction point through the first starting auxiliary relay for the first turnout of the second traction point. The second starting relay for the second turnout of the second traction point is connected to line 2( Figure 7 in the X2 line), line 3( Figure 7 in the X3 line), line 4( Figure 7 in the X4 line), line 5( Figure 7 is connected to the X5 line in the middle);

[0062] It should be noted that the action circuit of the spare first traction point switch machine is respectively provided with a first B-phase electric conversion relay between the B phase of the first traction point phase failure protector and the first starting auxiliary relay for the first turnout of the first traction point, and a first C-phase electric conversion relay between the C phase of the first traction point phase failure protector and the first starting auxiliary relay for the first turnout of the first traction point; the action circuit of the spare second traction point switch machine is respectively provided with a second B-phase electric conversion relay between the B phase of the second traction point phase failure protector and the first starting auxiliary relay for the first turnout of the second traction point, and a second C-phase electric conversion relay between the C phase of the second traction point phase failure protector and the first starting auxiliary relay for the first turnout of the second traction point;

[0063] The double-machine traction switch for urban rail transit often adopts a five-wire AC switch machine. Its core moving part is a three-phase motor powered by AC 380V. According to the different laying methods of the switch rail lines, the switch machine can be installed on the left side of the track line or on the right side of the line. Therefore, for the function of the electric switch machine to switch the switch rail to the reverse position and the normal position, the action paths when it is installed on the left side of the line and on the right side of the line are opposite. For example, if the switch rail is to be switched from the normal position to the reverse position, the switch machine installed on the left side of the line is in the extending action, while conversely, the switch machine installed on the right side of the line is in the pulling-in action, and vice versa for the reverse position. Therefore, for the switch machines installed in the line, it is necessary to distinguish whether they are normally installed switch machines or reversely installed switch machines, and it is necessary to change the phase sequence of the motor in the switch machine to achieve the forward or reverse rotation of the motor. The switch machine with the motor rotating forward is called a normally installed switch machine, and its three-phase motor phase sequence is U-V-W (A-B-C). The switch machine with the motor rotating in reverse is called a reversely installed switch machine, and its three-phase motor phase sequence is U-W-V (A-C-B). In this embodiment, when the action circuit of the standby first traction point switch machine controls the switch machine at the first traction point of the switch rail outside the control room, the phase sequence of its three-phase motor can be switched by operating the first B-phase electric phase-changing relay and the first C-phase electric phase-changing relay. When the action circuit of the standby second traction point switch machine controls the switch machine at the second traction point of the switch rail outside the control room, the phase sequence of its three-phase motor can be switched by operating the second B-phase electric phase-changing relay and the second C-phase electric phase-changing relay;

[0064] The spare first traction point switch machine action circuit includes a first B-phase changeover relay and a first C-phase changeover relay. The set numbers of the first B-phase changeover relay and the first C-phase changeover relay are configured according to the number of reverse-mounted switch machines in the same subway station. For the normal-mounted turnouts in the station, the first B-phase changeover relay and the first C-phase changeover relay do not need to be configured. The first B-phase changeover relay is connected in series with another first B-phase changeover relay, and the first C-phase changeover relay is connected in series with another first C-phase changeover relay. The common contact of the first first B-phase changeover relay is connected to the B-phase of the first traction point phase failure protector. The common contact of the next first B-phase changeover relay is connected to the normally closed contact of the previous first B-phase changeover relay, and so on, until the normally closed contact of the last first B-phase changeover relay is connected to the first traction point switch machine first start auxiliary relay. The common contact of the first first C-phase changeover relay is connected to the C-phase of the first traction point phase failure protector. The common contact of the next first C-phase changeover relay is connected to the normally closed contact of the previous first C-phase changeover relay, and so on, until the normally closed contact of the last first C-phase changeover relay is connected to the first traction point switch machine first start auxiliary relay. The normally open contact of the first B-phase changeover relay is connected to the normally closed contact of the first C-phase changeover relay in the same group of turnout relay modules, and the normally open contact of the first C-phase changeover relay is connected to the normally closed contact of the first B-phase changeover relay in the same group of turnout relay modules;

[0065] The spare second traction point switch machine action circuit includes a second B-phase electric change relay and a second C-phase electric change relay. The set numbers of the second B-phase electric change relay and the second C-phase electric change relay are configured according to the number of reverse-mounted switch machines in the same subway station. For the right-mounted turnouts in the station, there is no need to configure the second B-phase electric change relay and the second C-phase electric change relay. The second B-phase electric change relays are connected in series with each other, and the second C-phase electric change relays are connected in series with each other. The common contact of the first second B-phase electric change relay is connected to the B phase of the second traction point phase failure protector. The common contact of the next second B-phase electric change relay is connected to the normally closed contact of the previous second B-phase electric change relay, and so on, until the normally closed contact of the last second B-phase electric change relay is connected to the first start auxiliary relay of the second traction point switch. The common contact of the first second C-phase electric change relay is connected to the C phase of the second traction point phase failure protector. The common contact of the next second C-phase electric change relay is connected to the normally closed contact of the previous second C-phase electric change relay, and so on, until the normally closed contact of the last second C-phase electric change relay is connected to the first start auxiliary relay of the second traction point switch. The normally open contact of the second B-phase electric change relay is connected to the normally closed contact of the second C-phase electric change relay in the same group of turnout relay modules. The normally open contact of the second C-phase electric change relay is connected to the normally closed contact of the second B-phase electric change relay in the same group of turnout relay modules;

[0066] When switching between the main turnout combination and the spare turnout combination in the station, if the turnout corresponding to the main turnout combination to be switched is a reverse-mounted switch machine, the B-phase electric change relay and the C-phase electric change relay in the relay module for switching this group of turnouts will act, changing the phase sequence of the spare first traction point switch machine action circuit and the spare second traction point switch machine action circuit included in the spare turnout combination from A-B-C to A-C-B, changing the three-phase electric phase sequence of the spare first traction point switch machine action circuit and the spare second traction point switch machine action circuit from the three-phase electric phase sequence suitable for right-mounted switch machines to the three-phase electric phase sequence suitable for reverse-mounted switch machines, and completing the conversion of the reverse-mounted switch machine to drive the turnout from the normal position to the reverse position and from the reverse position to the normal position. If the turnout corresponding to the main turnout combination to be switched is a right-mounted switch machine, there is no B-phase electric change relay and C-phase electric change relay in the relay module for switching this group of turnouts, and the phase sequence of the spare first traction point switch machine action circuit and the spare second traction point switch machine action circuit included in the spare turnout combination does not need to be changed, and still follows the A-B-C three-phase electric phase sequence required by the right-mounted switch machine to complete the conversion of the right-mounted switch machine to drive the turnout from the normal position to the reverse position and from the reverse position to the normal position.

[0067] In the design scheme of the action circuit of the standby first traction point switch machine and the action circuit of the second traction point switch machine in the present invention, a B-phase power conversion relay and a C-phase power conversion relay are designed therein. Therefore, after the need for switching, it can ensure that the phase sequence after switching is consistent with the original turnout combination phase sequence, avoiding the situation that if the motor phase sequence of the reverse-mounted switch machine is executed according to the phase sequence of the forward-mounted switch machine, the correct turnout indication cannot be communicated;

[0068] According to the phase sequence conversion function described in the above-mentioned three-phase motor phase sequence conversion design, since the phase failure protector is supplied with 380V voltage and the B-phase power supply line and the C-phase power supply line need to be crossed on the secondary side of the phase failure protector during phase sequence conversion, if the conversion is carried out while energized during phase sequence conversion, when the B-phase power conversion relay and the C-phase power conversion relay act, the action of the two relay contacts is slightly out of sync, resulting in a small time difference, and a short circuit of the BC phase of the AC380V power supply will occur, the fuse will trip, causing the switching failure between the main turnout combination and the standby turnout combination. Therefore, several power-on relays are arranged at the front of the power supply in the action circuit of the standby first traction point switch machine and the action circuit of the standby second traction point switch machine. The action circuit of the standby first traction point switch machine is provided with a first B-phase power-on relay and a first C-phase power-on relay; the action circuit of the standby second traction point switch machine is provided with a second B-phase power-on relay and a second C-phase power-on relay. The first B-phase power-on relay, the second B-phase power-on relay, the first C-phase power-on relay and the second C-phase power-on relay are normally in the off state, so that a power-off conversion can be realized when the B-phase power supply line and the C-phase power supply line are crossed and phase-converted, which can ensure the success and safety of the phase sequence switching. The first B-phase power-on relay and the second B-phase power-on relay are a pair, and the number of pairs is equal to the number of all turnouts that need to be switched in the subway station. The first C-phase power-on relay and the second C-phase power-on relay are a pair, and the number of pairs is equal to the number of all turnouts that need to be switched in the station;

[0069] In the action circuit of the standby first traction point switch machine, a first B-phase power-on relay is connected in series between the B-phase power supply for turnout action and the input side of the first traction point phase failure protector, and a first C-phase power-on relay is connected in series between the C-phase power supply for turnout action and the input side of the first traction point phase failure protector. The common contacts of the first B-phase power-on relay are connected in parallel to the B-phase power supply for turnout action, and the common contacts of the first C-phase power-on relay are connected in parallel to the C-phase power supply for turnout action. The normally open contacts of the first B-phase power-on relay are connected in parallel to the B-phase power supply input terminal of the first traction point phase failure protector, and the normally open contacts of the first C-phase power-on relay are connected in parallel to the C-phase power supply input terminal of the first traction point phase failure protector. The normally closed contacts of the first B-phase power-on relay and the first C-phase power-on relay are not connected with a load;

[0070] In the spare second traction point switch machine action circuit, a second B-phase power supply connection relay is connected in series between the B-phase power supply for the switch machine action and the input side of the second traction point phase-breaking protector, and a second C-phase power supply connection relay is connected in series between the C-phase power supply for the switch machine action and the input side of the second traction point phase-breaking protector. The common contacts of the second B-phase power supply connection relay are connected in parallel to the B-phase power supply for the switch machine action, and the common contacts of the second C-phase power supply connection relay are connected in parallel to the C-phase power supply for the switch machine action. The normally open contacts of the second B-phase power supply connection relay are connected in parallel to the B-phase power supply input terminal of the second traction point phase-breaking protector, and the normally open contacts of the second C-phase power supply connection relay are connected in parallel to the C-phase power supply input terminal of the second traction point phase-breaking protector. The normally closed contacts of the second B-phase power supply connection relay and the second C-phase power supply connection relay are not connected with a load.

[0071] Each power supply connection relay for connecting the B and C phase power supplies belongs to a different relay module. When controlling the B-phase power supply connection relay and the C-phase power supply connection relay in all relay modules, a time-delay action function is set. It is required that the B-phase power supply connection relay and the C-phase power supply connection relay perform actions after other relays have acted. Since the B-phase power supply, the C-phase power supply are connected to the common contacts of the power supply connection relay, the normally open contacts of the power supply connection relay are connected to the input terminal of the phase-breaking protector, and the normally closed contacts of the power supply connection relay are not connected with a load, the B-phase power supply connection relay and the C-phase power supply connection relay are normally in the off state. Before the other relays act, the B-phase power supply and the C-phase power supply in the three-phase power supply are in the off state. After the other relays at the back end have all acted, then the B-phase power supply connection relay and the C-phase power supply connection relay are executed, and the safe switching of the phase sequence of the three-phase power supply at the back end can be ensured to succeed.

[0072] When in the non-switching state, the first B-phase power supply connection relay, the second B-phase power supply connection relay, the first C-phase power supply connection relay, and the second C-phase power supply connection relay are in the off state. The B-phase current of the 380V switch action power supply is cut off at the common contact of the first B-phase power supply connection relay and the second B-phase power supply connection relay. The C-phase current of the 380V switch action power supply is cut off at the common contact of the first C-phase power supply connection relay and the second C-phase power supply connection relay. There is no power in the standby first traction point switch machine action circuit and the standby second traction point switch machine action circuit, which can protect the equipment safety of the standby switch combination to a certain extent. When starting to switch the main switch combination of the station to the standby switch combination, due to the switching control software setting a delay action function for the B-phase and C-phase power supply connection relays in the relay module, for example, set to n seconds, where n can be any number, then the B-phase power supply connection relay and the C-phase power supply connection relay in the standby first traction point switch machine action circuit and the standby second traction point switch machine action circuit will act with a delay of n seconds. The common contact of the relay is connected to the normally open contact, and the 380V switch action power supply is sent to the input end of the phase failure protector through the common contact and the normally open contact. And during this delay time, other relays on the circuit have completed the corresponding switching, so the 380V switch action power supply can complete the conversion of the switch according to the set circuit path.

[0073] As Figure 8 , Figure 9 shown, Figure 8 This is the action circuit diagram of the first traction point switch machine of the main switch of the present invention. Figure 9This is the action circuit diagram of the second traction point switch machine for the main turnout of the present invention. The number of main turnout combinations is configured equally according to the number of turnouts in this station. One set of main turnout combination is configured for each turnout. The main turnout combination includes the action circuit of the main first traction point switch machine and the action circuit of the main second traction point switch machine. The action circuits of the main first traction point switch machine and the main second traction point switch machine in the main turnout combination use the existing switch machine action circuits in the station where they are located. The relay module includes the first main / backup switching relay module. The action circuit of the main first traction point switch machine is connected to the action circuit of the backup first traction point switch machine through the first main / backup switching relay module. The first main / backup switching relay module includes several first main / backup switching relays. The normally closed contact of any one of the first main / backup switching relays is electrically connected to the action circuit of the main first traction point switch machine. The normally open contact of any one of the first main / backup switching relays is electrically connected to the action circuit of the backup first traction point switch machine. The common contact of any one of the first main / backup switching relays is electrically connected to the first traction point switch machine. The relay module also includes the second main / backup switching relay module. The action circuit of the main second traction point switch machine is connected to the action circuit of the backup second traction point switch machine through the second main / backup switching relay module. The second main / backup switching relay module includes several second main / backup switching relays. The normally closed contact of any one of the second main / backup switching relays is electrically connected to the action circuit of the main second traction point switch machine. The normally open contact of any one of the second main / backup switching relays is electrically connected to the action circuit of the backup second traction point switch machine. The common contact of any one of the second main / backup switching relays is electrically connected to the second traction point switch machine;

[0074] In the present invention, on line 1 ( Figure 8 X1 line in it), line 2 ( Figure 8 X2 line in it), line 3 ( Figure 8 X3 line in it), line 4 ( Figure 8 X4 line in it), and line 5 ( Figure 8 X5 line in it) of the action circuit of the main first traction point switch machine, 5 first main / backup switching relays are respectively connected in series;

[0075] The normally closed contact of the first main / backup switching relay on line 1 ( Figure 8 X1 line in it) of the action circuit of the main first traction point switch machine connects to line 1 ( Figure 8 X1 line in it) of the action circuit of the main first traction point switch machine. The normally open contact of the first main / backup switching relay on line 1 ( Figure 8 X1 line in it) of the action circuit of the main first traction point switch machine connects to line 1 ( Figure 6 X1 line in it) of the action circuit of the backup first traction point switch machine. The common contact of the first main / backup switching relay on line 1 ( Figure 8 X1 line in it) of the action circuit of the main first traction point switch machine connects to the first traction point switch machine;

[0076] The normally closed contact of the first main - standby switching relay on the line 2 ( Figure 8 X2 line in the middle) of the action circuit of the primary first traction point switch machine connects to the line 2 ( Figure 8 X2 line in the middle) of the action circuit of the primary first traction point switch machine. The normally open contact of the first main - standby switching relay on the line 2 ( Figure 8 X2 line in the middle) of the action circuit of the primary first traction point switch machine connects to the line 2 ( Figure 6 X2 line in the middle) of the action circuit of the standby first traction point switch machine. The common contact of the first main - standby switching relay on the line 2 ( Figure 8 X2 line in the middle) of the action circuit of the primary first traction point switch machine connects to the first traction point switch machine;

[0077] The normally closed contact of the first main - standby switching relay on the line 3 ( Figure 8 X3 line in the middle) of the action circuit of the primary first traction point switch machine connects to the line 3 ( Figure 8 X3 line in the middle) of the action circuit of the primary first traction point switch machine. The normally open contact of the first main - standby switching relay on the line 3 ( Figure 8 X3 line in the middle) of the action circuit of the primary first traction point switch machine connects to the line 3 ( Figure 6 X3 line in the middle) of the action circuit of the standby first traction point switch machine. The common contact of the first main - standby switching relay on the line 3 ( Figure 8 X3 line in the middle) of the action circuit of the primary first traction point switch machine connects to the first traction point switch machine;

[0078] The normally closed contact of the first main - standby switching relay on the line 4 ( Figure 8 X4 line in the middle) of the action circuit of the primary first traction point switch machine connects to the line 4 ( Figure 8 X4 line in the middle) of the action circuit of the primary first traction point switch machine. The normally open contact of the first main - standby switching relay on the line 4 ( Figure 8 X4 line in the middle) of the action circuit of the primary first traction point switch machine connects to the line 4 ( Figure 6 X4 line in the middle) of the action circuit of the standby first traction point switch machine. The common contact of the first main - standby switching relay on the line 4 ( Figure 8 X4 line in the middle) of the action circuit of the primary first traction point switch machine connects to the first traction point switch machine;

[0079] The normally closed contact of the first main - standby switching relay on the line 5 ( Figure 8 X5 line in the middle) of the action circuit of the primary first traction point switch machine connects to the line 5 of the action circuit of the primary first traction point switch machine. The normally open contact of the first main - standby switching relay on the line 5 of the action circuit of the primary first traction point switch machine connects to the line 5 ( Figure 8 X5 line in the middle) of the action circuit of the standby first traction point switch machine. The normally open contact of the first main - standby switching relay on the line 5 ( Figure 6 X5 line in the middle) of the action circuit of the primary first traction point switch machine.Figure 8 The common contact of the first main / standby transfer relay on the line 1 (X5 line in the middle) connects to the first point machine of the switch machine for traction;

[0080] On the line 1 ( Figure 9 X1 line in the middle), line 2 ( Figure 9 X2 line in the middle), line 3 ( Figure 9 X3 line in the middle), line 4 ( Figure 9 X4 line in the middle), and line 5 ( Figure 9 X5 line in the middle) of the action circuit of the main second point machine of the switch machine for traction, 5 second main / standby transfer relays are respectively connected in series;

[0081] The normally closed contact of the second main / standby transfer relay on the line 1 ( Figure 9 X1 line in the middle) of the action circuit of the main second point machine of the switch machine for traction connects to the line 1 ( Figure 9 X1 line in the middle) of the action circuit of the main second point machine of the switch machine for traction, and the normally open contact of the second main / standby transfer relay on the line 1 ( Figure 9 X1 line in the middle) of the action circuit of the main second point machine of the switch machine for traction connects to the line 1 ( Figure 7 X1 line in the middle) of the action circuit of the standby second point machine of the switch machine for traction. The common contact of the second main / standby transfer relay on the line 1 of the action circuit of the main second point machine of the switch machine for traction connects to the second point machine of the switch machine for traction;

[0082] The normally closed contact of the second main / standby transfer relay on the line 2 ( Figure 9 X2 line in the middle) of the action circuit of the main second point machine of the switch machine for traction connects to the line 2 ( Figure 9 X2 line in the middle) of the action circuit of the main second point machine of the switch machine for traction, and the normally open contact of the second main / standby transfer relay on the line 2 ( Figure 9 X2 line in the middle) of the action circuit of the main second point machine of the switch machine for traction connects to the line 2 ( Figure 7 X2 line in the middle) of the action circuit of the standby second point machine of the switch machine for traction. The common contact of the second main / standby transfer relay on the line 2 of the action circuit of the main second point machine of the switch machine for traction connects to the second point machine of the switch machine for traction;

[0083] The normally closed contact of the second main / standby transfer relay on the line 3 ( Figure 9 X3 line in the middle) of the action circuit of the main second point machine of the switch machine for traction connects to the line 3 ( Figure 9 X3 line in the middle) of the action circuit of the main second point machine of the switch machine for traction, and the normally open contact of the second main / standby transfer relay on the line 3 ( Figure 9 X3 line in the middle) of the action circuit of the main second point machine of the switch machine for traction connects to the line 3 ( Figure 7 X3 line in the middle) of the action circuit of the standby second point machine of the switch machine for traction. The common contact of the second main / standby transfer relay on the line 3 of the action circuit of the main second point machine of the switch machine for traction connects to the second point machine of the switch machine for traction; Figure 9 The normally closed contact of the second main / standby transfer relay on the line 3 (

[0084] The normally closed contact of the second main / standby changeover relay on the action circuit line 4 ( Figure 9 X4 line in the middle) of the second traction point switch machine in the main use connects to the action circuit line 4 ( Figure 9 X4 line in the middle) of the second traction point switch machine in the main use. The normally open contact of the second main / standby changeover relay on the action circuit line 4 ( Figure 9 X4 line in the middle) of the second traction point switch machine in the main use connects to the action circuit line 4 ( Figure 7 X4 line in the middle) of the second traction point switch machine in the standby. The common contact of the second main / standby changeover relay on the action circuit line 4 ( Figure 9 X4 line in the middle) of the second traction point switch machine in the main use connects to the second traction point switch machine;

[0085] The normally closed contact of the second main / standby changeover relay on the action circuit line 5 ( Figure 9 X5 line in the middle) of the second traction point switch machine in the main use connects to the action circuit line 5 ( Figure 9 X5 line in the middle) of the second traction point switch machine in the main use. The normally open contact of the second main / standby changeover relay on the action circuit line 5 ( Figure 9 X5 line in the middle) of the second traction point switch machine in the main use connects to the action circuit line 5 ( Figure 7 X5 line in the middle) of the second traction point switch machine in the standby. The common contact of the second main / standby changeover relay on the action circuit line 5 ( Figure 9 X5 line in the middle) of the second traction point switch machine in the main use connects to the second traction point switch machine;

[0086] When there is no switching state, the common contact and the normally closed contact of the first main / standby changeover relay on the action circuit lines 1 ( Figure 8 X1 line in the middle), 2 ( Figure 8 X2 line in the middle), 3 ( Figure 8 X3 line in the middle), 4 ( Figure 8 X4 line in the middle), 5 ( Figure 8 X5 line in the middle) of the first traction point switch machine in the main use are connected. It normally connects to the action circuit of the first traction point switch machine of the switch. When starting to switch the main switch combination of the station to the standby switch combination, the first main / standby changeover relay in the action circuit of the first traction point switch machine in the main switch combination within the main use operates, and the normally closed contact disconnects from the action circuit of the first traction point switch machine in the main switch combination within the main use, and switches to connect to the action circuit of the first traction point switch machine in the standby switch combination through the normally open contact. The action circuit of the first traction point switch machine in the standby executes the action conversion of the first traction point switch machine of the switch, and completes the actions of the first traction point switch machine from the normal position to the reverse position and from the reverse position to the normal position; the action circuit of the second traction point switch machine in the main use is due to lines 1 ( Figure 9 X1 line in the middle), 2 ( Figure 9 X2 line in the middle), 3 ( Figure 9 X3 line in the middle), 4 ( Figure 9 X4 line in the middle), 5 (Figure 9 The common contact of the second switching relay on the X5 line in the middle is connected to the normally closed contact, which normally connects to the action circuit of the switch machine at the second traction point of the turnout. When starting to switch the main turnout combination of the station to the standby turnout combination, the second switching relay in series in the action circuit of the main second traction point switch machine operates, and the normally closed contact disconnects from the action circuit of the main second traction point switch machine and switches to the normally open contact to connect to the action circuit of the standby second traction point switch machine. The action circuit of the standby second traction point switch machine performs the action conversion of the switch machine at the second traction point of the turnout, completing the action of the switch machine at the second traction point from the normal position to the reverse position and from the reverse position to the normal position;

[0087] As Figures 10 - 13 shown, Figure 10 This is the acquisition circuit diagram of the standby turnout indication information interlocking host of the present invention, Figure 11 This is the acquisition circuit diagram of the standby turnout indication information interlocking slave of the present invention, Figure 12 This is the acquisition circuit diagram of the main turnout indication information interlocking host of the present invention, Figure 13 This is the acquisition circuit diagram of the main turnout indication information interlocking slave of the present invention. After the double-machine traction turnout of urban rail transit is converted from the normal position to the reverse position or from the reverse position to the normal position, the position of the current turnout is reflected through the indication relay in the turnout action circuit. One normal position indication relay and one reverse position indication relay are provided at the first traction point of the double-machine traction turnout, and one normal position indication relay and one reverse position indication relay are provided at the second traction point of the double-machine traction turnout. The railway signal interlocking system acquires the states of the contacts of the normal position indication relay and the reverse position indication relay in the turnout indication circuit, and can reflect the position and state of the current turnout. The safety integrity level of the interlocking system is SIL4 (Safety Integrity Level). Therefore, there are two sets of systems running simultaneously in the signal interlocking system. Usually, one set is the main system and the other set is the slave system. The two sets of signal interlocking systems respectively acquire the states of two groups of contacts of the normal position indication relay and the reverse position indication relay of the turnout, which are used for voting and calculation between the two sets of signal interlocking systems. Therefore, the signal interlocking system acquires the position and state of each turnout through 8 groups of contacts;

[0088] The interlocking acquisition circuit for spare switch indication information includes the main interlocking acquisition circuit for spare switch indication information and the slave interlocking acquisition circuit for spare switch indication information. The main interlocking acquisition circuit for spare switch indication information includes the normal position indication relay of the first point switch machine of the double - machine traction switch, the reverse position indication relay of the first point switch machine of the double - machine traction switch, the normal position indication relay of the second point switch machine of the double - machine traction switch, and the reverse position indication relay of the second point switch machine of the double - machine traction switch. The slave interlocking acquisition circuit for spare switch indication information contains the same relays as the main interlocking acquisition circuit for spare switch indication information. The difference is that the main interlocking acquisition circuit for spare switch indication information collects the first group of contacts of each switch indication relay, while the slave interlocking acquisition circuit for spare switch indication information collects the second group of contacts of each switch indication relay;

[0089] The interlocking acquisition circuit for normal switch indication information includes the main interlocking acquisition circuit for normal switch indication information and the slave interlocking acquisition circuit for normal switch indication information. The interlocking acquisition circuit for normal switch indication information in the normal switch combination and the interlocking slave indication circuit for normal switch indication information use the existing interlocking acquisition circuit for normal switch indication information and the interlocking acquisition circuit for normal switch indication information of the slave in the station where it is located. In the present invention, 4 indication information switching relays are connected in series in each existing interlocking acquisition circuit for normal switch indication information of the main switch and the interlocking acquisition circuit for normal switch indication information of the slave in each set of switches in the station, and a total of 8 indication information switching relays are used to complete the switching between the interlocking acquisition circuit for normal switch indication information and the interlocking acquisition circuit for spare switch indication information;

[0090] The common contact of any indication information switching relay is connected to the interlocking acquisition interface cabinet, the normally - closed contact of any indication information switching relay is connected to the interlocking acquisition circuit for normal switch indication information, and the normally - open contact of any indication information switching relay is connected to the interlocking acquisition circuit for spare switch indication information;

[0091] The normally - open contacts of all indication information switching relays with the same function in the station are connected in parallel to the interlocking acquisition circuit for normal switch indication information with the same function in the spare switch combination in sequence; that is, the normally - open contacts of the indication switching relays on the normal position indication relay of the first point of all normal switch combinations are connected in parallel and then connected to the circuit of the normal position indication relay of the first point of the spare switch combination;

[0092] The normally - open contacts of the indication switching relays on the reverse position indication relay of the first point of all normal switch combinations are connected in parallel and then connected to the circuit of the reverse position indication relay of the first point of the spare switch combination;

[0093] The normally - open contacts of the indication switching relays on the normal position indication relay of the second point of all normal switch combinations are connected in parallel and then connected to the circuit of the normal position indication relay of the second point of the spare switch combination;

[0094] The normally open contacts of the indication changeover relays on the indication relays of the second traction points in all main switch turnout assemblies are connected in parallel in sequence and then connected to the circuit of the indication relay of the second traction point of the standby switch turnout assembly;

[0095] The normally open contacts of the indication changeover relays on the reverse indication relays of the second traction points in all main switch turnout assemblies are connected in parallel in sequence and then connected to the circuit of the reverse indication relay of the second traction point of the standby switch turnout assembly;

[0096] When in the non-switching state, the common contact of the indication information changeover relay is connected to the normally closed contact. The condition power supplies of the main interlocking machine and the slave interlocking machine are respectively connected to the interlocking acquisition circuits of the switch turnout indication information of the main interlocking machine and the slave interlocking machine through the state of the normal indication relay of the first traction point of this switch turnout, the reverse indication relay of the first traction point, the normal indication relay of the second traction point, and the reverse indication relay of the second traction point. When it is necessary to switch the main switch turnout assembly to the standby switch turnout assembly, the indication information changeover relay in the corresponding main switch turnout assembly operates, the common contact of the indication information changeover relay disconnects from the normally closed contact and connects to the normally open contact, and the normal indication relay of the first traction point, the reverse indication relay of the first traction point, the normal indication relay of the second traction point, and the reverse indication relay of the second traction point in the standby switch turnout assembly are respectively connected to the slave interlocking machine and the main interlocking machine systems;

[0097] In order to control the relay module to act simultaneously when switching between the main switch turnout assembly and the standby switch turnout assembly, and certain restrictions on the relay module need to be set in the software, the relay module can be controlled by programming software or by a PLC control system;

[0098] In the present invention, there is a set of standby switch turnout assemblies as the redundant assemblies for all main switch turnout assemblies of the whole station. There can be multiple sets of main switch turnout assemblies, which are configured according to the usage requirements. Therefore, it is determined that only one set of main switch turnout assemblies is allowed to be switched to the standby switch turnout assembly at the same time. If the standby switch turnout assembly has completed the switching of one set of main switch turnout assemblies of the whole station, at this time, it is not allowed for other main switch turnout assemblies to request to switch to the standby switch turnout assembly control. Therefore, its logic needs to be restricted to avoid the situation where one set of standby switch turnout assemblies controls two or more sets of main switch turnout assemblies;

[0099] As Figure 14 shown Figure 14This is the software control operation interface diagram of the present invention. The switching logic can be restricted from the software operation interface. If a command to switch a certain set of turnouts from the primary turnout combination to the standby turnout combination has been issued at this time, the prompt color of this set of turnouts will change from "green" to "red", indicating that the standby turnout combination has been successfully switched and is occupied. At this time, the command sending box of other primary turnout combinations will prohibit the command of "switching to the standby turnout system", and it is not allowed for other primary turnout combinations to send the command of "switching to the standby turnout system" again, restricting other turnouts from sending commands to occupy and switch the standby turnout system again. After the turnout fault is restored, after manually sending the command of "switching to the primary turnout system" to the turnout prompt color that has become "red", at this time, it switches from the standby turnout combination to the primary turnout combination. After the switching is successful, the prompt color of this turnout changes from "red" to "green", indicating that the primary turnout combination has been successfully switched and the standby turnout combination is in an idle state and can be used as the standby combination of other primary turnout combinations again. At this time, other primary turnout combinations are allowed to send the command of "switching to the standby turnout combination" to it;

[0100] Since the switching requirements between the primary turnout combination and the standby turnout combination occur when a turnout fault occurs during subway operation, which belongs to the design of standby equipment in an emergency situation, switching from the primary turnout combination to the standby turnout combination at this time is an operation with extremely high safety restrictions. Therefore, it is necessary to restrict the operation authority to prevent switching in non-emergency situations. The operation software interface of the present invention provides three user roles: "administrator", "operator", and "observer" to restrict the use and switching operations of the system;

[0101] The "administrator" role provides function permissions of "address management", "system settings", and "operation records";

[0102] "Address management" can edit the relay modules of all turnouts at this station, set the delay action time of any relay in the relay module, edit and modify the turnout numbers, drag the turnout number icons on the software interface, and add relay module addresses arbitrarily to increase the N + 1 redundancy capacity;

[0103] "System settings" can modify the software name. Any station can independently modify the software name, and the modified software name can match the redundant operating systems of any station. In "system settings", the passwords of the "administrator" permission, "operator" permission, and "observer" permission can also be modified, as well as the ports and baud rates related to the relay modules. "Operation records" can view, delete, and export the operation record logs;

[0104] "Operator" can provide the operation permission for the redundant combination switching of turnouts. Among the three users of "Administrator, Observer, Operator", only logging in to the "Operator" account is allowed to perform the mutual switching command between the standby turnout combination and the main turnout combination. And when sending the command, it is necessary to repeat the input of the "Operator" account password to verify the authenticity of the operation;

[0105] "Observer" provides the interface viewing and operation record log viewing functions. The operation query log function can view the time of command sending, equipment, whether the command sending is true or not, and the corresponding operator, but cannot perform any editing and command sending permissions. After the software is opened, it defaults to stay in the "Observer" account;

[0106] In summary, because only one set of standby turnout combination is designed for the whole station, so using the functions contained in the turnout electrical redundancy switching system, it can be realized that only one set of main turnout combination can be switched to the standby turnout combination at the same time;

[0107] Because using the functions contained in the turnout electrical redundancy switching system, it can be realized to set the delay action function for the B-phase electric changeover relay and the C-phase electric changeover relay in the standby turnout combination, so that the standby turnout combination can be applicable to the control of the right-hand turnout machine and also applicable to the control of the left-hand turnout machine. And, it can also set the delay action function for any relay on the relay module when needed.

[0108] Because using the functions contained in the turnout electrical redundancy switching system, it can be realized that the present invention is applicable to all rail transit stations. When applicable to different rail transit stations, the software name can be modified, and by matching the relay module of different rail transit stations, the switching control can be carried out.

[0109] Because using the functions contained in the turnout electrical redundancy switching system, it can be realized that the account permissions of "Operator, Administrator, Observer" are from high to low, restricting that only logging in to the "Operator" account can perform the switching command between the "main turnout combination" and the "standby turnout combination". At the same time, set a password when switching the account permissions, and repeat the input of the password when sending the command to impose security restrictions on bad operations.

[0110] Due to the provision of the main turnout combination, standby turnout combination, relay module and turnout electrical redundancy switching system, the relay module includes several relays. The normally open contact of any one relay is connected to the standby turnout control system, and the normally closed contact of any one relay is connected to the main turnout control system, so that the main turnout and the standby turnout can be switched by controlling the relay module. After any main turnout fails, it can be switched to the standby turnout for use to ensure the normal operation of rail transit;

[0111] By setting up a standby switch combination, when the main switch combination fails, it can be switched to the standby switch combination to control the normal operation of the point machine;

[0112] By setting up a relay module, when switching to the standby switch combination, the relays that need to act during the switching process can act simultaneously, and the main switch combination can be safely and accurately switched to the standby switch combination;

[0113] By setting up a switch redundancy switching system, controlling the relay module to complete the action, the main switch combination is successfully switched to the standby switch group.

[0114] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present invention.

Claims

1. A rail transit turnout electrical fault handling system, characterized in that: it includes a main turnout combination, a standby turnout combination, a first traction point switch machine for pulling the tip part of the turnout switch rail, a second traction point switch machine for pulling the rear end part of the turnout switch rail, a relay module and a turnout redundant switching system. The main turnout combination, the standby turnout combination, the first traction point switch machine, the second traction point switch machine, and the turnout redundant switching system are communicatively connected to the relay module through RS485 / USB; the standby turnout combination includes a standby turnout control circuit, a standby first traction point switch machine action circuit, a standby second traction point switch machine action circuit, and a standby turnout indication information interlocking acquisition circuit. The standby first traction point switch machine action circuit and the standby second traction point switch machine action circuit are both electrically connected to the standby turnout control circuit, and the standby first traction point switch machine action circuit and the standby second traction point switch machine action circuit are both electrically connected to the standby turnout indication information acquisition circuit. The main turnout combination includes a main turnout control circuit, a main first traction point switch machine action circuit, a main second traction point switch machine action circuit, and a main turnout indication information interlocking acquisition circuit. The main first traction point switch machine action circuit and the main second traction point switch machine action circuit are both electrically connected to the main turnout control circuit, and the main first traction point switch machine action circuit and the main second traction point switch machine action circuit are both electrically connected to the main turnout indication information interlocking acquisition circuit; the standby first traction point switch machine action circuit includes a first traction point phase failure protector, a first traction point turnout first start relay, a first traction point turnout first start auxiliary relay, and a first traction point turnout second start relay. The A phase of the first traction point phase failure protector is electrically connected to the standby first traction point switch machine action circuit through the first traction point turnout first start relay. The B phase of the first traction point phase failure protector is connected to the first traction point turnout second start relay through the first traction point turnout first start auxiliary relay. The C phase of the first traction point phase failure protector is connected to the first traction point turnout second start relay through the first traction point turnout first start auxiliary relay. The first traction point turnout second start relay is electrically connected to the standby first traction point switch machine action circuit. A first B-phase electrical changeover relay is provided between the B phase of the first traction point phase failure protector and the first traction point turnout first start auxiliary relay, and a first C-phase electrical changeover relay is provided between the C phase of the first traction point phase failure protector and the first traction point turnout first start auxiliary relay; The spare second traction point switch machine action circuit includes a second traction point phase failure protector, a first start relay for the second traction point switch, a first start auxiliary relay for the second traction point switch, and a second start relay for the second traction point switch. The A phase of the second traction point phase failure protector is electrically connected to the spare second traction point switch machine action circuit through the first start relay for the second traction point switch. The B phase of the second traction point phase failure protector is connected to the second start relay for the second traction point switch through the first start auxiliary relay for the second traction point switch. The C phase of the second traction point phase failure protector is connected to the second start relay for the second traction point switch through the first start auxiliary relay for the second traction point switch. The second start relay for the second traction point switch is electrically connected to the spare second traction point switch machine action circuit. A second B-phase electrical change-over relay is provided between the B phase of the second traction point phase failure protector and the first start auxiliary relay for the second traction point switch. A second C-phase electrical change-over relay is provided between the C phase of the second traction point phase failure protector and the first start auxiliary relay for the second traction point switch; A number of first B-phase power connection relays are connected in series between the B phase of the first traction point phase failure protector and the B phase of the power supply. A number of first C-phase power connection relays are connected in series between the C phase of the first traction point phase failure protector and the C phase of the power supply. A number of second B-phase power connection relays are connected in series between the B phase of the second traction point phase failure protector and the B phase of the power supply. A number of second C-phase power connection relays are connected in series between the C phase of the second traction point phase failure protector and the C phase of the power supply; By setting up a turnout redundancy switching system, the control relay module is made to complete the action, and the main turnout combination is smoothly switched to the spare turnout group; The relay module includes a number of relays. The normally open contact of any one relay is connected to the spare turnout control system, and the normally closed contact of any one relay is connected to the main turnout control system, so that the main turnout and the spare turnout can be switched by controlling the relay module. After any main turnout fails, it can be switched to the spare turnout for use.

2. A rail transit turnout electrical fault handling system according to claim 1, characterized in that: The relay module includes a first main / backup switching relay module. The main first traction point switch machine action circuit and the spare first traction point switch machine action circuit are connected through the first main / backup switching relay module. The first main / backup switching relay module includes a number of first main / backup switching relays. The normally closed contact of any one of the first main / backup switching relays is electrically connected to the main first traction point switch machine action circuit. The normally open contact of any one of the first main / backup switching relays is electrically connected to the spare first traction point switch machine action circuit. The common contact of any one of the first main / backup switching relays is electrically connected to the first traction point switch machine.

3. A rail transit turnout electrical fault handling system according to claim 2, characterized in that: The relay module further includes a second main-backup switching relay module. The main second traction point switch machine action circuit and the backup second traction point switch machine action circuit are connected through the second main-backup switching relay module. The second main-backup switching relay module includes a plurality of second main-backup switching relays. The normally closed contact of any one of the second main-backup switching relays is electrically connected to the main second traction point switch machine action circuit. The normally open contact of any one of the second main-backup switching relays is electrically connected to the backup second traction point switch machine action circuit. The common contact of any one of the second main-backup switching relays is electrically connected to the second traction point switch machine.

4. A rail transit turnout electrical fault processing system according to claim 3, characterized in that: the relay module includes a control switching relay module. The control switching relay module is arranged between the backup turnout control circuit and the main turnout control circuit. The control switching relay module includes a plurality of control switching relays. The normally open contact of any one of the control switching relays is electrically connected to the backup turnout control circuit. The normally closed contact of any one of the control switching relays and the common contact of any one of the control switching relays are both electrically connected to the main turnout control circuit.

5. A rail transit turnout electrical fault processing system according to claim 4, characterized in that: the relay module further includes a representation information switching relay module. The representation information switching relay module is arranged between the backup turnout representation information interlocking acquisition circuit and the main turnout representation information interlocking acquisition circuit. The representation information switching relay module includes a plurality of representation information switching relays. The normally open contact of any one of the representation information switching relays is electrically connected to the backup turnout representation information interlocking acquisition circuit. The normally closed contact of any one of the representation information switching relays is electrically connected to the main turnout representation information interlocking acquisition circuit. The common contact of any one of the representation information switching relays is electrically connected to the railway interlocking system acquisition board.

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