CN204882768U - Railroad signal microcomputer interlocking equipment turnout indication plate detection device - Google Patents
Railroad signal microcomputer interlocking equipment turnout indication plate detection device Download PDFInfo
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- CN204882768U CN204882768U CN201520694875.6U CN201520694875U CN204882768U CN 204882768 U CN204882768 U CN 204882768U CN 201520694875 U CN201520694875 U CN 201520694875U CN 204882768 U CN204882768 U CN 204882768U
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Abstract
The utility model discloses a railroad switch indicating board detection device in railway signal microcomputer interlocking equipment, which comprises a power switch, a double-pole double-throw switch, a first light emitting diode and a second light emitting diode, wherein the power switch, the double-pole double-throw switch and the two light emitting diodes are arranged in a peripheral circuit of a railroad switch indicating board, two optical couplers, a reverse indicating lamp and a positioning indicating lamp of the railroad switch indicating board are communicated with a power supply through the actions of the power switch and the double-pole double-throw switch, whether a double optical coupling element, the reverse indicating lamp and the positioning indicating lamp in the railroad switch indicating board are normal is detected through the states of the reverse indicating lamp and the positioning indicating lamp in the railroad switch indicating board and the states of the two light emitting diodes arranged on the periphery of the railroad switch indicating board, thereby judging whether the railroad switch indicating board is repaired or not, avoiding the phenomena that a relay is pulled back and forth to indicate and cause damage to a computer input board under the condition that the railroad switch indicating board is not repaired, the device has the advantages of convenient detection and simple structure.
Description
Technical field
The utility model relates to railway signal computer interlock technical field, particularly switch indication board checking device in a kind of railway signal microcomputer interlock equipment.
Background technology
In railway Large scale construction in recent years, railway signal microcomputer interlock equipment obtains and uses widely.Interlock device is the core of signal system, take on the important task ensureing traffic safety, wherein railway signal microcomputer interlock equipment easily realize with train traffic control, arrange control, the interface of the equipment such as microcomputer monitoring, be conducive to maintenance and handling failure, easily realize action record and fault diagnosis, possess the ability expanded in the future and upgrade, by standardized administration and same technical standard, obtain monitoring, develop fast.So-called railway signal microcomputer interlock system, it is exactly the station signal interlocking system adopting computer technology to form, system with route, track switch, signal for control object, the interlocking between route, track switch, signal is realized by computer system, and by the requirement of train operation and shunting service, automatically control route, conversion track switch, clearing signal etc.
In the micro-computer interlocking control system of railway signal microcomputer interlock equipment WQ--2000, employ a kind of switch indication relay, switch indication plate is as shown in Figure 1 installed in switch indication relay, wherein switch indication plate meets computer input control system need of work by photoelectricity transformation principle, as shown in Figure 1, switch indication plate comprises with lower port: power end 1, surely show line end 2, show back end 3, instead show line end 4, counter showing enter end 6 into end 5 and Ding Biao; Switch indication plate forms primarily of two optocoupler T (as MCT6), reverse indication lamp LED1 and normal indication lamp LED2, two optocoupler comprises two isolated optocouplers, be respectively the first optocoupler and the second optocoupler, wherein the first optocoupler input end light-emitting diodes tube cathode is connected its anode by reverse indication lamp LED1, resistance R2 with polar capacitor C1 successively, wherein the anode of reverse indication lamp LED1 connects the negative electrode of the first optocoupler input end light emitting diode, anode contact resistance R2; The negative pole contact resistance R2 of polar capacitor C1, positive pole connects the first optocoupler input end light-emitting diodes tube anode, and one end that resistance R2 is connected with polar capacitor C1 negative pole is the anti-table line end 4 of switch indication plate; The transmitting of the first optocoupler output terminal transistor very the counter of switch indication plate is shown into end 5; Wherein the second optocoupler input end light-emitting diodes tube cathode is connected its anode by normal indication lamp LED2, resistance R1 with polar capacitor C2 successively; Wherein the anode of normal indication lamp LED2 connects the negative electrode of the second optocoupler input end light emitting diode, anode contact resistance R1; The negative pole contact resistance R1 of polar capacitor C2, positive pole connects the second optocoupler input end light-emitting diodes tube anode, one end that resistance R1 is connected with polar capacitor C2 negative pole is connected with one end of resistance R3 and the anode of the first optocoupler input end light emitting diode respectively, and the resistance R3 other end returns end 3 as the table of switch indication plate; Table line end 2 is determined as switch indication plate in one end that polar capacitor C2 positive pole is connected with the second optocoupler input end light-emitting diodes tube anode; The transmitting of the second optocoupler output terminal transistor very the fixed of switch indication plate is shown into end 6; The collector of the first optocoupler transistor is connected with the collector of the second optocoupler transistor and as the power end 1 of switch indication plate.Switch indication relay is subject to induction current impact when thundering, the two optocouplers on switch indication plate, reverse indication lamp LED1 and normal indication lamp LED2 are fragile.And after the switch indication relay that microcomputer interlocking damages is keeped in repair, cannot judge whether to keep in repair, each all will by plug switch indication relay back and forth on reaching the standard grade, also to contact scheduling to handle back and forth and just can judge whether to keep in repair, if switch indication plate just likely causes computer input plate to damage once bad in switch indication relay, result in greater loss.
Utility model content
The purpose of this utility model is that the shortcoming overcoming prior art is with not enough, switch indication board checking device in a kind of railway signal microcomputer interlock equipment is provided, by this pick-up unit can direct-detection switch indication plate whether normal, avoid back and forth plug switch indication relay and cause switch indication plate to cause computer input plate when not keeped in repair the phenomenon damaged.
The purpose of this utility model is achieved through the following technical solutions: switch indication board checking device in a kind of railway signal microcomputer interlock equipment, comprise power switch, double-point double-throw switch, the first light emitting diode and the second light emitting diode, described double-point double-throw switch comprises the first stationary contact, the second stationary contact, the 3rd stationary contact, the 4th stationary contact, the first moving contact and the second moving contact; In double-point double-throw switch, the first moving contact and the second moving contact are respectively with the first stationary contact with the 3rd stationary contact is corresponding connects, or the first moving contact and the second moving contact are respectively with the second stationary contact with the 4th stationary contact is corresponding connects;
First stationary contact connects the table Hui Duan of switch indication plate; First moving contact connects DC power anode by power switch after being connected with switch indication plate power end; What the second stationary contact connected switch indication plate determines table line end, and the 3rd stationary contact connects the anti-table line end of switch indication plate; Second moving contact connects DC power cathode; Second moving contact connects the counter of switch indication plate by the first light emitting diode and shows into end, and wherein the negative electrode of the first light emitting diode connects the second moving contact, and anode connects the counter of switch indication plate and shows into end; Second moving contact connects the fixed of switch indication plate by the second light emitting diode and shows into end, and wherein the negative electrode of the second light emitting diode connects the second moving contact, and anode connects the fixed of switch indication plate and shows into end; First stationary contact is connected with the 4th stationary contact.
Preferably, the cathode voltage of described direct supply is positive 5V, and the cathode voltage of direct supply is negative 5V.
Preferably, described power switch is single-pole single-throw (SPST).
Preferably, described switch indication plate road forms primarily of two optocoupler, reverse indication lamp and normal indication lamp;
Two optocoupler comprises two isolated optocouplers, is respectively the first optocoupler and the second optocoupler;
First optocoupler input end light-emitting diodes tube cathode is connected its anode by reverse indication lamp, resistance R2 with polar capacitor C1 successively, and wherein the anode of reverse indication lamp connects the negative electrode of the first optocoupler input end light emitting diode, anode contact resistance R2; The negative pole contact resistance R2 of polar capacitor C1, positive pole connects the first optocoupler input end light-emitting diodes tube anode, and one end that resistance R2 is connected with polar capacitor C1 negative pole is the anti-table line end of switch indication plate; The transmitting of the first optocoupler output terminal transistor very the counter of switch indication plate is shown into end;
Second optocoupler input end light-emitting diodes tube cathode is connected its anode by normal indication lamp, resistance R1 with polar capacitor C2 successively; Wherein the anode of normal indication lamp connects the negative electrode of the second optocoupler input end light emitting diode, anode contact resistance R1; The negative pole contact resistance R1 of polar capacitor C2, positive pole connects the second optocoupler input end light-emitting diodes tube anode, one end that resistance R1 is connected with polar capacitor C2 negative pole is connected with one end of resistance R3 and the anode of the first optocoupler input end light emitting diode respectively, and the resistance R3 other end is as the table Hui Duan of switch indication plate; Table line end is determined as switch indication plate in one end that polar capacitor C2 positive pole is connected with the second optocoupler input end light-emitting diodes tube anode; The transmitting of the second optocoupler output terminal transistor very the fixed of switch indication plate is shown into end; The collector of the first optocoupler transistor is connected with the collector of the second optocoupler transistor and as the power end of switch indication plate.
Further, described pair of optocoupler is MCT6 chip.
The utility model pick-up unit is as follows for the Cleaning Principle of switch indication plate fault:
Closed electrical source switch, action double-point double-throw switch, make the first moving contact and the second moving contact respectively with the first stationary contact with the 3rd stationary contact is corresponding connects, now DC power anode connects the table Hui Duan of switch indication plate by the first moving contact and the first stationary contact, DC power cathode connects the anti-table line end of switch indication plate by the second moving contact and the 3rd stationary contact, makes to show Hui Duan and anti-table wire end energize in switch indication plate; DC power cathode is shown into end by the second the counter of moving contact connection switch indication plate simultaneously, DC power anode connects the power end of switch indication plate, make the power end of switch indication plate and instead show into termination energize, if now reverse indication lamp and the first light emitting diode all luminous, then represent that in reverse indication lamp and two optocoupler, the first optocoupler is all normal; If the first light-emitting diode is luminous, the first light emitting diode is not luminous, then represent that reverse indication lamp is normal, and in two optocoupler, the first optocoupler breaks down; If the first light-emitting diode is not luminous, then represent that reverse indication lamp and/or the first optocoupler input end light emitting diode are out of order, now because the first optocoupler input end light emitting diode fails to switch on power, the first optocoupler can not enter duty, so the first light emitting diode is not luminous.
Closed electrical source switch, action double-point double-throw switch, makes the first moving contact and the second moving contact respectively with the second stationary contact with the 4th stationary contact is corresponding connects; What now DC power anode connected switch indication plate by the first moving contact and the second stationary contact determines table lead-in wire terminal, DC power cathode connects the table Hui Duan of switch indication plate by the second moving contact, the 4th stationary contact and the first stationary contact, makes determining table line and showing to switch on power between Hui Duan of switch indication plate; DC power anode connects the power end of switch indication plate simultaneously, and DC power cathode is connected switch indication version by the second moving contact and surely shown into end, makes the power end of switch indication plate and Ding Biao enter termination energize; Now normal indication lamp and the second light emitting diode all luminous, then represent that in normal indication lamp and two optocoupler, the second optocoupler is all normal; If now normal indication lamp is luminous, and the second light emitting diode is not luminous, then represent that normal indication lamp is normal, and in two optocoupler, the second optocoupler breaks down; If the second light-emitting diode is not luminous, then represent that normal indication lamp and/or the second optocoupler input end light emitting diode are out of order, now because the second optocoupler input end light emitting diode fails to switch on power, the second optocoupler can not enter duty, so the second light emitting diode L is not luminous.
The utility model has following advantage and effect relative to prior art:
The utility model arranges power switch in the periphery of switch indication plate, double-point double-throw switch and two light emitting diodes, by the action of power switch and double-point double-throw switch by two of switch indication plate optocouplers, reverse indication lamp and normal indication lamp and power supply are connected, the state of two light emitting diodes arranged by state and the switch indication plate periphery of reverse indication lamp and normal indication lamp in switch indication plate detects two optic coupling element in switch indication plate, reverse indication lamp and normal indication lamp whether normal, thus judge whether switch indication plate keeps in repair after failure, avoid back and forth plug switch indication relay and cause switch indication plate to cause computer input plate when not keeped in repair the phenomenon damaged, have easy to detect, structure of the detecting device advantage that is simple and that bring convenience to maintenance.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of switch indication plate in switch indication relay.
Fig. 2 is pick-up unit circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
As shown in Figure 2, present embodiment discloses switch indication board checking device in a kind of railway signal microcomputer interlock equipment, comprise power switch K1, double-point double-throw switch K2, the first light emitting diode U and the second light emitting diode L.
Double-point double-throw switch K2 comprises the first stationary contact a, the second stationary contact c, the 3rd stationary contact d, the 4th stationary contact f, the first moving contact b and the second moving contact e; In double-point double-throw switch K2, the first moving contact b and the second moving contact e is respectively with the first stationary contact a with the 3rd stationary contact d is corresponding connects, or the first moving contact b and the second moving contact e is respectively with the second stationary contact c with the 4th stationary contact f is corresponding connects;
The table that first stationary contact a connects switch indication plate returns end 3; First moving contact b connects DC power anode+5V by power switch K1 after being connected with switch indication plate power end 1; Second stationary contact c connects the anti-table line end 4 determining table line end the 2, three stationary contact d connection switch indication plate of switch indication plate; Second moving contact e connects DC power cathode-5V; Second moving contact e connects the counter of switch indication plate by the first light emitting diode U and shows into end 5, and wherein the negative electrode of the first light emitting diode U connects the second moving contact e, and anode connects the counter of switch indication plate and shows into end 5; Second moving contact e connects the fixed of switch indication plate by the second light emitting diode L and shows into end 6, and wherein the negative electrode of the second light emitting diode L connects the second moving contact e, and anode connects the fixed of switch indication plate and shows into end 6; First stationary contact a is connected with the 4th stationary contact f.
In the present embodiment, power switch K1 is single-pole single-throw switch (SPST).
Switch indication plate road forms primarily of two optocoupler T, reverse indication lamp LED1 and normal indication lamp LED2;
Two optocoupler comprises two isolated optocouplers, is respectively the first optocoupler and the second optocoupler;
First optocoupler input end light-emitting diodes tube cathode is connected its anode by reverse indication lamp LED1, resistance R2 with polar capacitor C1 successively, and wherein the anode of reverse indication lamp LED1 connects the negative electrode of the first optocoupler input end light emitting diode, anode contact resistance R2; The negative pole contact resistance R2 of polar capacitor C1, positive pole connects the first optocoupler input end light-emitting diodes tube anode, and one end that resistance R2 is connected with polar capacitor C1 negative pole is the anti-table line end 4 of switch indication plate; The transmitting of the first optocoupler output terminal transistor very the counter of switch indication plate is shown into end 5;
Second optocoupler input end light-emitting diodes tube cathode is connected its anode by normal indication lamp LED2, resistance R1 with polar capacitor C2 successively; Wherein the anode of normal indication lamp LED2 connects the negative electrode of the second optocoupler input end light emitting diode, anode contact resistance R1; The negative pole contact resistance R1 of polar capacitor C2, positive pole connects the second optocoupler input end light-emitting diodes tube anode, one end that resistance R1 is connected with polar capacitor C2 negative pole is connected with one end of resistance R3 and the anode of the first optocoupler input end light emitting diode respectively, and the resistance R3 other end returns end 3 as the table of switch indication plate; Table line end 2 is determined as switch indication plate in one end that polar capacitor C2 positive pole is connected with the second optocoupler input end light-emitting diodes tube anode; The transmitting of the second optocoupler output terminal transistor very the fixed of switch indication plate is shown into end 6; The collector of the first optocoupler transistor is connected with the collector of the second optocoupler transistor and as the power end 1 of switch indication plate.Wherein in switch indication plate, two optocoupler is MCT6 chip.
The process that the present embodiment above-mentioned detection device carries out detecting for switch indication plate is specific as follows:
Closed electrical source switch K1, action double-point double-throw switch K2, make the first moving contact b and the second moving contact e respectively with the first stationary contact a with the 3rd stationary contact d is corresponding connects, the table that now DC power anode connects switch indication plate by the first moving contact b and the first stationary contact a returns end 3, DC power cathode connects the anti-table line end 4 of switch indication plate by the second moving contact e and the 3rd stationary contact, makes to show back end 3 in switch indication plate and instead show line end 4 to switch on power; DC power cathode is shown into end 5 by the second the counter of moving contact connection switch indication plate simultaneously, DC power anode connects the power end 1 of switch indication plate, the power end 1 of switch indication plate and counter showing are switched on power into end 5, if now reverse indication lamp LED1 and the first light emitting diode U is all luminous, then represent that in reverse indication lamp LED1 and two optocoupler, the first optocoupler is all normal; If the first light-emitting diode LED1 is luminous, the first light emitting diode U is not luminous, then represent that reverse indication lamp LED1 is normal, and in two optocoupler, the first optocoupler breaks down; If the first light-emitting diode LED1 is not luminous, then represent that reverse indication lamp LED1 and/or the first optocoupler input end light emitting diode are out of order, now because the first optocoupler input end light emitting diode fails to switch on power, first optocoupler can not enter duty, so the first light emitting diode U is not luminous.
Closed electrical source switch K1, action double-point double-throw switch K2, make the first moving contact b and the second moving contact e respectively with the second stationary contact c with the 4th stationary contact f is corresponding connects; What now DC power anode connected switch indication plate by the first moving contact b and the second stationary contact c determines table lead-in wire terminal 2, the table that DC power cathode connects switch indication plate by the second moving contact e, the 4th stationary contact f and the first stationary contact a returns end 3, makes determining table line end 2 and showing back to switch on power between end 3 of switch indication plate; DC power anode connects the power end 1 of switch indication plate simultaneously, and DC power cathode is connected switch indication version by the second moving contact e and surely shown into end 6, makes the power end 1 of switch indication plate and Ding Biao enter end 6 and switches on power; Now normal indication lamp LED2 and the second light emitting diode L is all luminous, then represent that in normal indication lamp LED2 and two optocoupler, the second optocoupler is all normal; If now normal indication lamp LED2 is luminous, and the second light emitting diode L is not luminous, then represent that normal indication lamp LED2 is normal, and in two optocoupler, the second optocoupler breaks down; If the second light-emitting diode LED2 is not luminous, then represent that normal indication lamp LED1 and/or the second optocoupler input end light emitting diode are out of order, now because the second optocoupler input end light emitting diode fails to switch on power, second optocoupler can not enter duty, so the second light emitting diode L is not luminous.
Therefore by Closing Switch K1 and action double-point double-throw switch K2, the present embodiment pick-up unit directly judges that whether switch indication plate is normal.Without the need to plug switch indication relay back and forth, and the phenomenon avoided causing switch indication plate to cause computer input plate when not keeped in repair and damage.There is easy to detect, structure of the detecting device simple and to keeping in repair the advantage brought convenience, affecting transport production without the upper limit.
Above-described embodiment is the utility model preferably embodiment; but embodiment of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (5)
1. switch indication board checking device in a railway signal microcomputer interlock equipment, it is characterized in that, comprise power switch, double-point double-throw switch, the first light emitting diode and the second light emitting diode, described double-point double-throw switch comprises the first stationary contact, the second stationary contact, the 3rd stationary contact, the 4th stationary contact, the first moving contact and the second moving contact; In double-point double-throw switch, the first moving contact and the second moving contact are respectively with the first stationary contact with the 3rd stationary contact is corresponding connects, or the first moving contact and the second moving contact are respectively with the second stationary contact with the 4th stationary contact is corresponding connects;
First stationary contact connects the table Hui Duan of switch indication plate; First moving contact connects DC power anode by power switch after being connected with switch indication plate power end; What the second stationary contact connected switch indication plate determines table line end, and the 3rd stationary contact connects the anti-table line end of switch indication plate; Second moving contact connects DC power cathode; Second moving contact connects the counter of switch indication plate by the first light emitting diode and shows into end, and wherein the negative electrode of the first light emitting diode connects the second moving contact, and anode connects the counter of switch indication plate and shows into end; Second moving contact connects the fixed of switch indication plate by the second light emitting diode and shows into end, and wherein the negative electrode of the second light emitting diode connects the second moving contact, and anode connects the fixed of switch indication plate and shows into end; First stationary contact is connected with the 4th stationary contact.
2. switch indication board checking device in railway signal microcomputer interlock equipment according to claim 1, is characterized in that, the cathode voltage of described direct supply is positive 5V, and the cathode voltage of direct supply is negative 5V.
3. switch indication board checking device in railway signal microcomputer interlock equipment according to claim 1, is characterized in that, described power switch is single-pole single-throw (SPST).
4. switch indication board checking device in railway signal microcomputer interlock equipment according to any one of claim 1 to 3, is characterized in that, described switch indication plate road forms primarily of two optocoupler, reverse indication lamp and normal indication lamp;
Two optocoupler comprises two isolated optocouplers, is respectively the first optocoupler and the second optocoupler;
First optocoupler input end light-emitting diodes tube cathode is connected its anode by reverse indication lamp, resistance R2 with polar capacitor C1 successively, and wherein the anode of reverse indication lamp connects the negative electrode of the first optocoupler input end light emitting diode, anode contact resistance R2; The negative pole contact resistance R2 of polar capacitor C1, positive pole connects the first optocoupler input end light-emitting diodes tube anode, and one end that resistance R2 is connected with polar capacitor C1 negative pole is the anti-table line end of switch indication plate; The transmitting of the first optocoupler output terminal transistor very the counter of switch indication plate is shown into end;
Second optocoupler input end light-emitting diodes tube cathode is connected its anode by normal indication lamp, resistance R1 with polar capacitor C2 successively; Wherein the anode of normal indication lamp connects the negative electrode of the second optocoupler input end light emitting diode, anode contact resistance R1; The negative pole contact resistance R1 of polar capacitor C2, positive pole connects the second optocoupler input end light-emitting diodes tube anode, one end that resistance R1 is connected with polar capacitor C2 negative pole is connected with one end of resistance R3 and the anode of the first optocoupler input end light emitting diode respectively, and the resistance R3 other end is as the table Hui Duan of switch indication plate; Table line end is determined as switch indication plate in one end that polar capacitor C2 positive pole is connected with the second optocoupler input end light-emitting diodes tube anode; The transmitting of the second optocoupler output terminal transistor very the fixed of switch indication plate is shown into end; The collector of the first optocoupler transistor is connected with the collector of the second optocoupler transistor and as the power end of switch indication plate.
5. according to switch indication board checking device in the railway signal microcomputer interlock equipment described in claim 4, it is characterized in that, described pair of optocoupler is MCT6 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520694875.6U CN204882768U (en) | 2015-09-09 | 2015-09-09 | Railroad signal microcomputer interlocking equipment turnout indication plate detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520694875.6U CN204882768U (en) | 2015-09-09 | 2015-09-09 | Railroad signal microcomputer interlocking equipment turnout indication plate detection device |
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|---|---|
| CN204882768U true CN204882768U (en) | 2015-12-16 |
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| CN201520694875.6U Active CN204882768U (en) | 2015-09-09 | 2015-09-09 | Railroad signal microcomputer interlocking equipment turnout indication plate detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970257A (en) * | 2017-03-31 | 2017-07-21 | 上海紫通信息科技有限公司 | Power equipment control output signal Acquisition Circuit |
| CN112952760A (en) * | 2021-02-07 | 2021-06-11 | 浙江众合科技股份有限公司 | Point switch driving system with open-phase protection |
| CN113942541A (en) * | 2021-12-21 | 2022-01-18 | 中铁十四局集团电气化工程有限公司 | Portable turnout operation device and turnout operation method |
-
2015
- 2015-09-09 CN CN201520694875.6U patent/CN204882768U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970257A (en) * | 2017-03-31 | 2017-07-21 | 上海紫通信息科技有限公司 | Power equipment control output signal Acquisition Circuit |
| CN106970257B (en) * | 2017-03-31 | 2019-10-29 | 上海紫通信息科技有限公司 | Power equipment control output signal Acquisition Circuit |
| CN112952760A (en) * | 2021-02-07 | 2021-06-11 | 浙江众合科技股份有限公司 | Point switch driving system with open-phase protection |
| CN113942541A (en) * | 2021-12-21 | 2022-01-18 | 中铁十四局集团电气化工程有限公司 | Portable turnout operation device and turnout operation method |
| CN113942541B (en) * | 2021-12-21 | 2022-03-29 | 中铁十四局集团电气化工程有限公司 | Portable turnout operation device and turnout operation method |
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