CN210760801U

CN210760801U - Switch control circuit

Info

Publication number: CN210760801U
Application number: CN201921349184.7U
Authority: CN
Inventors: 贺木华; 陈海波; 张范; 张怀; 吴坤; 方院江
Original assignee: Hunan Maglev Transportation Development Co ltd
Current assignee: Hunan Maglev Transportation Development Co ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-06-16
Anticipated expiration: 2029-08-20

Abstract

The utility model discloses a switch control circuit, which comprises a first switch starting relay, a second switch starting relay, a fixed position operating relay, a reversed position operating relay and a cut-off relay; a group of front contacts of a second turnout starting relay are connected in series in an excitation circuit of the positioning indication relay; the second turnout starting relay is used for cutting off and positioning the excitation circuit of the indicating relay when the excitation magnet is attracted to the rotating pole in the reverse operation, so as to form a self-closing circuit for switching on the cutting-off relay and the first turnout starting relay; the inversion indicates that a group of rear contacts of a second turnout starting relay are connected in series in an excitation circuit of the relay; and the second turnout starting relay is used for cutting off the excitation circuit of the reverse position indication relay when the excitation magnet is attracted to the rotating pole in the positioning operation so as to form a self-closing circuit for switching on the cutting-off relay and the first turnout starting relay. The utility model discloses can reduce the emergence probability of the unable goat of switch, the inconsistent trouble of indoor and outdoor equipment, improve train operation through rate.

Description

Switch control circuit

Technical Field

The utility model belongs to the technical field of urban rail transit signal specialty technique and specifically relates to indicate a switch control circuit.

Background

A switch is a basic arrangement for branching a track into two or more tracks and switching a rail train from one track to another.

The way of operating the switch is divided into: the turnout route operation and the independent turnout operation. The turnout approach operation means that a positioning operation relay (DCJ) or a reverse operation relay (FCJ) of a turnout inside an approach is sucked up by handling the approach, so that a turnout starting circuit is switched on, and the turnout is switched to a specified position; the independent operation of the turnout refers to that the turnout starting circuit is switched on by pressing a turnout positioning or reversing button, so that the turnout is switched to a specified position.

If the reverse direction turnout operation is carried out immediately before the turnout starting circuit is not restored, as the capacitor C in the excitation and self-closing circuit of the disconnecting relay QDJ has 6.5s of discharge time, and actually, the capacitor C is not enough to ensure that the disconnecting relay QDJ can reliably self-close and suck up at the 5.9s after the information is returned, the self-closing circuit of the first turnout starting relay 1DQJ is disconnected, and the reverse position in an outdoor electric control cabinet or the reliable suction up of a positioning operation relay can not be maintained, so that the outdoor unlocking motor stops and stops after the motor is slightly moved once, and the turnout can not be switched and the failure that the indoor second turnout starting relay 2DQJ is inconsistent with the actual position of the turnout can occur. After 7.6s, the information is returned, the cut-off relay QDJ is ensured to be self-closed and sucked up because the capacitor C is charged, and at the moment, the reverse turnout operation is carried out, and all relays in the turnout control circuit can sequentially act according to the normal action sequence.

Therefore, if reverse direction turnout operation is performed in the time period of 5.9 to 7.6 seconds after the turnout gives the indication information, the capacitor C cannot guarantee the self-closing and suction of the disconnecting relay QDJ, so that the self-closing circuit of the first turnout starting relay 1DQJ is disconnected, the reverse position in the outdoor electric control cabinet or the reliable suction of the positioning operation relay cannot be maintained, the turnout cannot be switched, and the failure that the actual position of the indoor second turnout starting relay 2DQJ is inconsistent with the actual position of the turnout exists. However, the time interval as long as 8 seconds seriously reduces the train operation passing rate and affects the train operation efficiency, so that when the turnout switch is actually controlled, reverse turnout operation can be carried out within 8 seconds, which is difficult to avoid, and the turnout cannot be switched, and the failure that the indoor second turnout starting relay 2DQJ is inconsistent with the actual position of the turnout occurs.

When the turnout cannot be switched and the indoor second turnout starting relay 2DQJ is inconsistent with the actual position of the turnout, the following measures are generally taken: 1) the state of 2DQJ is artificially changed in the indoor equipment, and the indoor and outdoor equipment are in a consistent state; 2) manually operating a turnout electric control cabinet in an outdoor rail running area, and changing the actual position of the turnout to keep consistent with indoor equipment; 3) the turnout motor is manually shaken in the outdoor rail running area, the actual position of the turnout is changed, and the turnout motor is kept consistent with indoor equipment. However, the above technical measures avoid the occurrence of the situation that the turnout is not represented in the single operation to a certain extent, but only the residual problem of the design is treated as a temporary solution, and the problem is not fundamentally solved, so that the fault still occurs for many times.

SUMMERY OF THE UTILITY MODEL

To the technical problem who exists among the above-mentioned prior art, the utility model provides a switch control circuit to reduce the emergence probability of the unable switch of switch, the inconsistent trouble of indoor and outdoor equipment, improve train operation through rate.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

a switch control circuit comprises a first switch starting relay 1DQJ, a second switch starting relay 2DQJ, a positioning operation relay DCJ, a reverse operation relay FCJ, a positioning indication relay DBJ, a reverse indication relay FBJ and a cut-off relay QDJ, wherein the first switch starting relay 1DQJ is used for retrieving interlocking conditions, and the second switch starting relay 2DQJ is used for controlling a motor to rotate to complete unlocking, switching and locking of switches;

a group of front contacts of a second turnout starting relay 2DQJ are connected in series in an excitation circuit of the representing relay DBJ in a positioning mode; the second turnout starting relay 2DQJ is used for cutting off and positioning the excitation circuit of the representing relay DBJ when the excitation attracting and rotating pole is operated in a reverse position, so as to form a self-closing circuit of the cut-off relay QDJ and further form a self-closing circuit of the first turnout starting relay 1 DQJ;

the reverse position shows that a group of rear contacts of a second turnout starting relay 2DQJ are connected in series in an excitation circuit of the relay FBJ; and the second turnout starting relay 2DQJ is used for cutting off the excitation circuit of the reverse position indication relay FBJ when the excitation attracts and rotates the pole in the positioning operation, so as to form a self-closing circuit of the cut-off relay QDJ and further form a self-closing circuit of the first turnout starting relay 1 DQJ.

Further, the first fork start relay 1DQJ is a slow release relay.

Further, the slow release time of the first turnout starter relay 1DQJ is 0.5 second.

Further, the second switch actuating relay 2DQJ is a polarity hold relay.

Further, the location operation excitation circuit of first fork start-up relay 1DQJ, by the anodal KZ of power to power negative pole KF series connection in proper order and include: a first group of front contacts of a track relay DGJ, a third group of rear contacts of a locking protection relay SFJ, a first group of coils of a first turnout starting relay 1DQJ, a fourth group of rear contacts of a second turnout starting relay 2DQJ and a second group of front contacts of a positioning operation relay DCJ;

the reversal operation excitation circuit of first fork start relay 1DQJ is established ties in proper order by the anodal KZ of power to power negative pole KF and is included: a first group of front contacts of the track relay DGJ, a third group of rear contacts of the locking protection relay SFJ, a first group of coils of a first turnout starting relay 1DQJ, a fourth group of front contacts of a second turnout starting relay 2DQJ and a second group of front contacts of the reversal operation relay FCJ;

the excitation circuit of cutting off relay QDJ is connected in series in proper order and includes: a capacitor C, a sixth group of front contacts of the first turnout starting relay 1DQJ, a coil of the disconnecting relay QDJ and a resistor R1;

first fork start relay 1 DQJ's self-closing circuit is established ties in proper order by the anodal KZ of power to power negative pole KF and is included: the second set of front contacts of the disconnecting relay QDJ, the second set of coils of the first turnout starter relay 1DQJ, and the third set of front contacts of the first turnout starter relay 1 DQJ;

the reversal operation excitation circuit of second switch starting relay 2DQJ is established ties in proper order by the anodal KZ of power to power negative pole KF and is included: a fifth set of front contacts of the first turnout starter relay 1DQJ, an eighth set of front contacts of the disconnecting relay QDJ, a first set of coils of the second turnout starter relay 2DQJ, and a second set of front contacts of the reverse operation relay FCJ;

second switch starting relay 2 DQJ's location operation excitation circuit is established ties in proper order by the anodal KZ of power to power negative pole KF and is included: a fourth group of front contacts of the first turnout starting relay 1DQJ, a seventh group of front contacts of the disconnecting relay QDJ, a second group of coils of the second turnout starting relay 2DQJ and a second group of front contacts of the positioning operation relay DCJ;

the positioning shows the excitation circuit of relay DBJ, by power supply positive pole 1DCZ24 to power supply negative pole 1DCF24 in proper order series connection include: the system comprises a No. 1 lock pin N travel switch, a coil of a positioning indication relay DBJ, a first group of front contacts of a second turnout starting relay 2DQJ and a No. 2 lock pin N travel switch;

the reverse position of the excitation circuit of the relay FBJ is represented, and the excitation circuit comprises a power supply anode 1DCZ24 and a power supply cathode 1DCF24 which are connected in series in sequence: the 1 # lock pin L travel switch, a coil of a reverse position indication relay FBJ, a third group of rear contacts of a second turnout starting relay 2DQJ and a 2 # lock pin L travel switch;

the self-closing circuit of cut-off relay QDJ is established ties in proper order by the anodal KZ of power to power negative pole KF and is included: positioning a third group of rear contacts of the indicating relay, inverting the third group of rear contacts of the indicating relay, cutting off a first group of front contacts of the relay and cutting off a coil of the relay;

the excitation circuit of the reversal operation relay FCJ is sequentially connected in series from a power supply anode 1DCZ24 to a power supply cathode 1DCF24 and comprises: a first group of front contacts of a first turnout starting relay 1DQJ, a second group of rear contacts of a second turnout starting relay 2DQJ, a first group of front contacts of a reverse operation relay, a coil of the reverse operation relay FCJ and a second group of front contacts of a first turnout starting relay 1 DQJ;

the excitation circuit of the positioning operation relay DCJ is sequentially connected in series from a power supply anode 1DCZ24 to a power supply cathode 1DCF24 and comprises: a first set of front contacts of the first turnout starter relay 1DQJ, a second set of front contacts of the second turnout starter relay 2DQJ, a first set of front contacts of the positioning operating relay, a coil of the positioning operating relay DCJ, and a second set of front contacts of the first turnout starter relay 1 DQJ.

Further, the method is applied to a medium-low speed magnetic suspension turnout control system.

Advantageous effects

The utility model discloses the front contact of second switch starting relay 2DQJ is gone into in the excitation circuit that the location represents relay DBJ, the back contact of second switch starting relay 2DQJ is gone into in the excitation circuit that the counterpoint represents relay FBJ, can trigger the location in advance or the counterpoint represents the relay closure, thereby construct the self-closing circuit that leads to and cut off relay QDJ and first switch starting relay 1DQJ in advance, avoid cutting off relay QDJ and inhale the emergence of the unable switch condition of outdoor switch that leads to because of electric capacity discharge is not enough to guarantee its self reliable self-closing in the excitation circuit, consequently can effectively shorten indoor external equipment (indoor 2DQJ and outdoor switch) inconsistent fault time window, thereby reduce unable switching, the emergence probability of the inconsistent trouble of indoor external equipment, improve train operation throughput. Meanwhile, in the time period from the end of capacitor discharging to the end of charging, if turnout non-representation occurs (namely the turnout cannot be switched to cause inconsistency of indoor and outdoor equipment), turnout representation can be given in a turnout return operation mode, and turnout non-representation faults can be quickly and effectively solved.

Drawings

FIG. 1 is a cut-off relay QDJ excitation circuit and a self-closing circuit;

fig. 2 is an excitation circuit of the first switch actuating relay 1DQJ, a self-closing circuit and an excitation circuit of the second switch actuating relay 2 DQJ;

FIG. 3 is an exciting circuit of a reversal and positioning operation relay in a switch electric control cabinet;

fig. 4 shows the excitation circuit of the relay in the positioned and inverted state.

Detailed Description

The following is a detailed description of the embodiments of the present invention, and the present embodiment uses the technical solution of the present invention as a basis for developing, and gives detailed implementation and specific operation process, and it is right to further explain the technical solution of the present invention.

Aiming at the technical problems in the prior art that: 1) when a train passing through the turnout is handled or the turnout is operated independently, the turnout can be operated again after 8 seconds after the position indication information of the turnout appears, the train operation passing rate is reduced seriously, and the train operation efficiency is influenced; 2) if switch conversion operation is handled in 8 seconds, indoor, the peripheral hardware state will not be unanimous, the trouble that switch no position represented appears, the utility model provides a switch switching control circuit, including first switch starting relay 1DQJ, second switch starting relay 2DQJ, location control relay DCJ, counterpoint control relay FCJ, location representation relay DBJ, counterpoint representation relay FBJ, cut off relay QDJ, electric capacity C, resistance R1, locking protection relay SFJ, and by the excitation circuit or the self-closing circuit of above each relay of component constitution: the positioning operation excitation circuit, the reverse operation excitation circuit and the self-closing circuit of the first turnout starting relay 1DQJ, the excitation circuit and the self-closing circuit of the cut-off relay QDJ, the positioning operation excitation circuit and the reverse operation excitation circuit of the second turnout starting relay 2DQJ, the positioning excitation circuit of the positioning indication relay DBJ, the reverse indication excitation circuit of the relay FBJ, the reverse operation excitation circuit of the relay FCJ and the positioning excitation circuit of the positioning operation relay DCJ.

The location operation excitation circuit of first switch start relay 1DQJ means the excitation circuit of first switch start relay 1DQJ when switch by the location operation of reversal, by the anodal KZ of power to power negative pole KF series connection in proper order and include: a first group of front contacts of a track relay DGJ, a third group of rear contacts of a locking protection relay SFJ, a first group of coils of a first turnout starting relay 1DQJ, a fourth group of rear contacts of a second turnout starting relay 2DQJ and a second group of front contacts of a positioning operation relay DCJ; expressed as: KZ-DGJ_11-12-SFJ_31-33-1DQJ_3-4-2DQJ_141-143-DCJ_21-22-KF, see fig. 2.

The reversal operation excitation circuit of first switch start relay 1DQJ means that the excitation circuit of first switch start relay 1DQJ when switch is by location to reversal operation, and by the anodal KZ of power to power negative pole KF in proper order series connection include: the first set of front contacts of the track relay DGJ, the third set of back contacts of the latching shield relay SFJ, the first set of coils of the first turnout starter relay 1DQJ, the fourth set of front contacts of the second turnout starter relay 2DQJ, and the second set of front contacts of the reverse operation relay FCJ are represented as: KZ-DGJ_11-12-SFJ_31-33-1DQJ_3-4-2DQJ_141-142-FCJ_21-22-KF, see fig. 2.

First fork start relay 1 DQJ's self-closing circuit is established ties in proper order by the anodal KZ of power to power negative pole KF and is included: the second set of front contacts of the disconnecting relay QDJ, the second set of coils of the first turnout starter relay 1DQJ, and the third set of front contacts of the first turnout starter relay 1 DQJ; expressed as: KZ-QDJ_21-22-1DQJ_1-2-1DQJ_31-32-KF, see fig. 2.

The excitation circuit who cuts off the relay, establish ties in proper order and include: a capacitor C, a sixth group of front contacts of the first turnout starting relay 1DQJ, a coil of the disconnecting relay QDJ and a resistor R1; expressed as: c + -1DQJ_61-62-QDJ_1-4-R1_2-1-C-is shown in FIG. 2.

The self-closing circuit of cut-off relay is established ties in proper order by the anodal KZ of power to power negative pole KF and is included: positioning a third group of rear contacts of the indicating relay, inverting the third group of rear contacts of the indicating relay, cutting off a first group of front contacts of the relay and cutting off a coil of the relay; expressed as: KZ-DBJ_31-33-FBJ_31-33-QDJ_11-12-QDJ_1-4-KF, see fig. 2.

Second switch starting relay 1 DQJ's location operation excitation circuit, the excitation circuit of second switch starting relay 2DQJ when the switch is by the operation of reversal location, by the anodal KZ of power to power negative pole KF series connection in proper order and include: a fourth group of front contacts of the first turnout starting relay 1DQJ, a seventh group of front contacts of the disconnecting relay QDJ, a second group of coils of the second turnout starting relay 2DQJ and a second group of front contacts of the positioning operation relay DCJ; expressed as: KZ-1DQJ_41-42-QDJ_71-72-2DQJ_3-4-DCJ_22-21-KF, see fig. 2.

The reversal operation excitation circuit of second switch starting relay 1DQJ, the excitation circuit of second switch starting relay 2DQJ when the switch is operated by the location to the reversal, by the anodal KZ of power to power negative pole KF series connection in proper order and include: a fifth set of front contacts of the first turnout starter relay 1DQJ, an eighth set of front contacts of the disconnecting relay QDJ, a first set of coils of the second turnout starter relay 2DQJ, and a second set of front contacts of the reverse operation relay FCJ; expressed as: KZ-1DQJ_51-52-QDJ_81-82-2DQJ_2-1-FCJ_22-21-KF, see fig. 2.

The excitation circuit of location operation relay DCJ comprises by power anodal 1DCZ24 to power negative pole 1DCF24 in proper order series connection: the first set of front contacts of the first switch actuating relay 1DQJ, the second set of front contacts of the second switch actuating relay 2DQJ, the first set of front contacts of the positioning operating relay, the coil of the positioning operating relay DCJ, the second set of front contacts of the first switch actuating relay 1DQJ are represented as: 1DCZ24-JZZJ_11-12-1DQJ_11-12-2DQJ_121-122-DCJ_11-12-DCJ_1-4-1DQJ_22-21-JZZJ_22-211DCF24, see FIG. 3;

the excitation circuit of the reversal operation relay FCJ is sequentially connected in series from a power supply anode 1DCZ24 to a power supply cathode 1DCF24 and comprises: a first group of front contacts of a first turnout starting relay 1DQJ, a second group of rear contacts of a second turnout starting relay 2DQJ, a first group of front contacts of a reverse operation relay, a coil of the reverse operation relay FCJ and a second group of front contacts of a first turnout starting relay 1 DQJ; expressed as: 1DCZ24-JZZJ_11-12-1DQJ_11-12-2DQJ_121-123-FCJ_11-12-FCJ_1-4-1DQJ_22-21-JZZJ_22-21-1DCF24, see FIG. 3.

The positioning shows the excitation circuit of relay DBJ, by power supply positive pole 1DCZ24 to power supply negative pole 1DCF24 in proper order series connection include: the system comprises a No. 1 lock pin N travel switch, a coil of a positioning indication relay DBJ, a first group of front contacts of a second turnout starting relay 2DQJ and a No. 2 lock pin N travel switch; expressed as: no. 2DCZ24-1 lock pin N travel switch-DBJ_1-4-2DQJ_112-111A number 2 lock pin N travel switch-2 DCF24, see fig. 4.

The reverse position of the excitation circuit of the relay FBJ is represented, and the excitation circuit comprises a power supply anode 1DCZ24 and a power supply cathode 1DCF24 which are connected in series in sequence: the 1 # lock pin L travel switch, a coil of a reverse position indication relay FBJ, a third group of rear contacts of a second turnout starting relay 2DQJ and a 2 # lock pin L travel switch; expressed as: 2DCZ24-1 number lock pin L travel switch-FBJ_1-4--2DQJ_113-111-number 2 locking pin L travel switch-2 DCF24, see fig. 4.

The following description is made by taking the parameters of the components of the medium-low speed magnetic suspension turnout control system as specific embodiments.

When the switch is switched from positioning to reverse position by the operation of the approach, because the capacitor C in the cut-off relay QDJ exciting circuit and the self-closing circuit has 6.5S discharging time, the logic action sequence of each relay of the switch control circuit is related to the time interval between the appearance of the switch operation position indicating information:

1. if the turnout is operated to the reverse position within 0 to 5.9 seconds after the turnout has the positioning indication information, the logic action program of each relay of the turnout control circuit is as follows:

before operating the turnout, because the capacitor discharges continuously, the sucked relay has the following characteristics: a first turnout starting relay 1DQJ and a disconnecting relay QDJ; therefore, the turnout is operated to the reverse position within 0 to 5.9 seconds, the driving power supply sent by the interlocking machine drives the reverse position operation relay FCJ to suck up, and the reverse position operation excitation circuit of the second turnout starting relay 2DQJ is switched on, so that the second turnout starting relay 2DQJ is subjected to reverse position operation excitation pole switching; after the second turnout starting relay 2DQJ is operated in a reverse position to excite the magnetic pole, the front contact of the second turnout starting relay 2DQJ falls and is disconnected, and then the exciting circuit of the positioning indication relay DBJ is cut off, as shown in FIG. 4, the positioning indication relay DBJ falls; positioning the drop of the relay DBJ, and switching on and off the self-closing circuit of the relay QDJ; and (3) switching on the QDJ self-closing circuit to switch on the self-closing circuit of 1 DQJ.

Because the second turnout starting relay 2DQJ reversal operation excitation pole makes the front contact and the middle contact of the second group closed, and the self-closing circuit of the first turnout starting relay 1DQJ is switched on, the excitation circuit of the reversal operation relay FCJ in the trackside turnout system electrical control cabinet can be switched on, and the outdoor turnout starts to execute the unlocking-switching-locking action steps.

The switch operation FCJ is therefore, the switch is operated to the reverse position within 0 to 5.9 seconds after the switch appears the location and represents the information, when second switch starting relay 2DQJ changes the pole to the reverse position by the location, the switch switching is accomplished to the discharge that outdoor switch also can utilize electric capacity C to indoor outer equipment representation unanimity, does not influence the normal action conversion of switch.

2. If the turnout is operated to be in the reverse position within 5.9-6.4 seconds after the turnout is positioned and shows information, the logic action program of each relay of the turnout control circuit is as follows:

operating the turnout to reverse within 5.9-6.4 seconds, driving a driving power supply sent by an interlocking machine to drive a reverse operation relay FCJ to suck up, and switching on a reverse operation excitation circuit of a second turnout starting relay 2DQJ to enable a reverse operation excitation pole of a second turnout starting relay 2 DQJ; after the second turnout starting relay 2DQJ is operated in a reverse position to excite the magnetic pole, the front contact of the second turnout starting relay 2DQJ falls and is disconnected, and then the exciting circuit of the positioning indication relay DBJ is cut off, as shown in FIG. 4, the positioning indication relay DBJ falls; positioning the drop of the relay DBJ, and switching on and off the self-closing circuit of the relay QDJ; and (3) switching on the QDJ self-closing circuit to switch on the self-closing circuit of 1 DQJ.

For among the prior art, the location shows that relay DBJ needs wait outdoor switch and begin the unblock action and trigger and fall down, the utility model discloses a second switch starting relay 2DQJ changes utmost point and triggers and fall down, can make the self-closing circuit who cuts off relay QDJ construct in advance and lead to make counterpoint operation relay FCJ can keep the excitation to inhale until the switch completion before the electric capacity discharges the end.

Therefore, when the switch is operated to the reverse position within 5.9 to 6.4 seconds after the positioning indication information appears on the switch, the second switch starting relay 2DQJ is switched to the reverse position from the positioning, and meanwhile, the outdoor switch is switched on in advance by using the self-closing circuit of the cut-off relay QDJ, so that the switch can be completed by reliably sucking up the reverse position operation relay FCJ in the outdoor electric control cabinet, the indoor and outdoor equipment can be consistent in representation, and the normal action conversion of the switch is not influenced.

3. If the turnout is operated to the reverse position in 6.4 seconds after the positioning indication information appears on the turnout, the logic action program of each relay of the turnout control circuit is as follows:

since the first turnout starter relay 1DQJ has a slow release time of about 0.5 second, at the 6.4 th second, the driving power supply sent out by the FCJ through the interlocking machine is sucked up, QDJ and 1DQJ are still sucked up, and the pole switching circuit of the structure 2DQJ is specifically as follows: KZ- → 1DQJ_51-52-→QDJ_81-82-→2DQJ_2-1-→FCJ_22-21- → KF, temporarily opening the electric control cabinet circuit of the outdoor turnout, e.g.As shown in fig. 3, the outdoor turnout performs the unlocking action, the unlocking action time is about 0.6 second, the turnout unlocking cannot be completed, the positioning is switched to the reverse position, and therefore the control console has a state that the turnout is not shown.

In the embodiment, the turnout is singly operated to the original position, because the second turnout starting relay 2DQJ is switched to the pole, the positioning operation relay DCJ and the locking protection relay SFJ are sequentially sucked up through the driving power supply sent by the interlocking machine, the positioning operation excitation circuit of the first turnout starting relay 1DQJ is switched on, the capacitor C in the excitation circuit of the cut-off relay QDJ is charged completely, the cut-off relay QDJ is discharged through the charged capacitor C, the cut-off relay QDJ is kept to be reliably sucked up, and the self-closing circuit of the first turnout starting relay 1DQJ is switched on after the cut-off relay QDJ is sucked up. The excitation circuit of the positioning operation relay DCJ in the outdoor turnout electric control cabinet is switched on through the positioning operation relay DCJ, the first turnout starting relay 1DQJ and the second turnout starting relay 2DQJ, the outdoor turnout moves towards the positioning direction, and the control console will have positioning indication.

4. If the turnout is operated to be in the reverse position within 6.5 to 7 seconds after the turnout is positioned and shows information, the logic action program of each relay of the turnout control circuit is as follows:

the disconnecting relay QDJ falls due to the end of discharging of the capacitor C, and the first turnout starter relay 1DQJ is held in the suck-up state by the slow release. The switching circuit of the second switch actuating relay 2DQJ cannot be turned on by the drop of the disconnecting relay QDJ, and therefore, the state of the indoor and outdoor devices cannot be changed by operating the switch to the reverse position in this period, that is, the indoor and outdoor devices are maintained in the original state.

5. If the turnout is operated to the reverse position within 7 to 7.6 seconds after the turnout appears the positioning indication information, the logic action program of each relay of the turnout control circuit is as follows:

when the slow release of the first turnout starting relay 1DQJ is finished in the 7 th second, the first turnout starting relay falls down due to the end of the slow release time, so that the capacitor C in the excitation circuit of the disconnecting relay QDJ starts to charge until the charging of the 7.6 th second is finished, the turnout is operated to the reverse position in the period, and the indoor and outdoor equipment continues to maintain the original state.

6. And if the turnout is operated to be in the reverse position after 7.6 seconds after the positioning indication information appears:

after the capacitor C in the excitation circuit of the cut-off relay QDJ is charged in 7.6 seconds, the switch is operated to reverse, indoor and outdoor devices sequentially act according to a normal action sequence, DBJ drops after the pole of 2DQJ is switched, and the drop-off device forms a QDJ self-closing circuit in advance, so that the action sequence of other relays is not influenced. When the indoor and outdoor equipment is finished, the console gives out the state information of the turnout reverse position. The normal action sequence of each indoor and outdoor device is as follows:

the interlocking machine sends out a driving power supply, the reverse operation relay FCJ and the locking protection relay SFJ are excited and attracted, and the attraction and excitation conditions of the first turnout starting relay 1DQJ are met; after the first turnout starting relay 1DQJ is excited and sucked up, the front contact of the sixth group of the turnout starting relay is switched on an excitation circuit of the turnout relay QDJ; the suction of the cut-off relay QDJ is carried out, and the front contact of the cut-off relay QDJ is communicated with a self-closing circuit of a first fork starting relay 1 DQJ; when the first switch actuating relay 1DQJ is switched on and off by the excitation suction mechanism of the disconnecting relay QDJ, the second switch actuating relay 2DQJ simultaneously switches poles; the second turnout starting relay 2DQJ makes the positioning indication relay DBJ fall and close, and opens and closes the self-closing circuit of the disconnecting relay QDJ; as shown in fig. 3, after the first turnout start relay 1DQJ, the disconnecting relay QDJ suck-up and the second turnout start relay 2DQJ pole switching, the excitation circuit of the trackside turnout system operating circuit reverse operation relay FCJ is switched on; a reverse operation relay FCJ in an electrical control cabinet of the trackside turnout system sucks up, a logic circuit in the electrical control cabinet acts, and a turnout unlocking motor acts to unlock the turnout; as shown in fig. 4, the switch motor of the switch pulls the switch to rotate, and after the switch is in place, the switch locking motor locks the switch, and the switch is switched on and switched off to indicate the excitation circuit of the relay FBJ; the reverse position shows that after the relay FBJ is excited and sucked up, the self-closing circuit of the cut-off relay QDJ is cut off, so that the cut-off relay QDJ falls down, and the self-closing circuit of the first turnout starting relay 1DQJ is cut off; the switching circuit of the second switch actuating relay 2DQJ is interrupted by the dropping of the disconnecting relay QDJ and the first switch actuating relay 1 DQJ.

Through the analysis of the circuit, the front contact of the second turnout starting relay 2DQJ is connected in series in the excitation circuit of the positioning indication relay DBJ, the rear contact of the second turnout starting relay 2DQJ is connected in series in the excitation circuit of the reverse indication relay FBJ, the fault time window (namely, the indoor 2DQJ and the outdoor turnout indicate inconsistent fault time periods) can be effectively shortened, the capacitor discharge time is shortened from 5.9 seconds in the original fault time window to 1.1 seconds after the capacitor discharge is finished, and the capacitor discharge time is shortened from 6.4 seconds to 1.1 seconds after the capacitor discharge is finished.

In addition, in the time period from the capacitor discharging time of 6.4 seconds to the capacitor discharging time of 1.1 seconds after the capacitor discharging time is over, the turnout is operated when the capacitor discharging time of 6.4 seconds, and if the turnout is not represented, the turnout representation can be given in a turnout back operation mode; if the turnout is operated in the time period from the time when the capacitor is just discharged for 6.5 seconds to the time when the capacitor is discharged for 1.1 seconds, indoor and outdoor equipment cannot act, and the representation state of the turnout cannot be influenced.

When the switch is switched from reverse position to positioning by operating the route, the principle is the same as that of the switch from positioning to reverse position, and the description is omitted here.

The above embodiments are preferred embodiments of the present application, and those skilled in the art can make various changes or modifications without departing from the general concept of the present application, and such changes or modifications should fall within the scope of the claims of the present application.

Claims

1. A switch control circuit comprises a first switch starting relay 1DQJ, a second switch starting relay 2DQJ, a positioning operation relay DCJ, a reversal operation relay FCJ, a positioning indication relay DBJ, a reversal indication relay FBJ and a cut-off relay QDJ, wherein the first switch starting relay 1DQJ is used for retrieving interlocking conditions, the second switch starting relay 2DQJ is used for controlling a motor to rotate to complete the unlocking, switching and locking of switches, and the switch control circuit is characterized in that,

2. The switch control circuit of claim 1, wherein the first switch start relay 1DQJ is a slow release relay.

3. The switch control circuit of claim 2, wherein the slow release time of the first switch actuation relay 1DQJ is 0.5 seconds.

4. The switch control circuit of claim 1, wherein the second switch actuating relay 2DQJ is a polarity hold relay.

5. The switch control circuit of claim 1, wherein the positioning operation exciting circuit of the first switch start relay 1DQJ, sequentially connected in series from the positive power supply terminal KZ to the negative power supply terminal KF, comprises: a first group of front contacts of a track relay DGJ, a third group of rear contacts of a locking protection relay SFJ, a first group of coils of a first turnout starting relay 1DQJ, a fourth group of rear contacts of a second turnout starting relay 2DQJ and a second group of front contacts of a positioning operation relay DCJ;

6. The switch control circuit of claim 1, applied to a medium-low speed magnetic levitation switch control system.