Subway crane contact rail short circuit simulation system

Abstract

The utility model discloses a subway travelling contact rail short circuit simulation system, which comprises a power supply, a control relay, a voltage regulator, a switch cabinet simulation circuit, a contact rail, a steel rail and a direct current gear motor, the direct current gear motor is connected with the power supply and arranged between the contact rail and the steel rail, and the output end of the direct current gear motor is provided with a short circuit conductor. The length of the short-circuit conductor is greater than or equal to the distance between the contact rail and the steel rail; the positive electrode of the power supply is connected with the positive electrode of the voltage regulator through a first normally-open contact of the control relay, the negative electrode of the voltage regulator is connected with the switch cabinet analog circuit, the switch cabinet analog circuit is connected with the negative electrode of the power supply through a second normally-open contact of the control relay, and the voltage regulator is connected with the contact rail and the steel rail. According to the utility model, the short circuit of the contact rail during subway driving can be simulated, so that workers can take treatment measures in time when accidents occur, and train management and scheduling can be better carried out.

Description

Technical Field

[0001] This utility model belongs to the field of rail transit technology, specifically relating to a short-circuit simulation system for subway train contact rail. Background Technology

[0002] Subways are an important part of urban rail transit. In actual operation, subways may experience contact rail short circuit accidents. However, existing subway simulations only involve the subway train and do not cover contact rail short circuits, which cannot effectively simulate sudden situations such as contact rail short circuits in subway operation. This makes it difficult for staff to take corresponding measures quickly and in a timely manner.

[0003] Therefore, a subway contact rail short-circuit simulation system is proposed. By simulating subway contact rail short-circuit accidents and other emergencies in subway operation, it helps staff to take timely measures to deal with accidents and better manage and schedule trains. Utility Model Content

[0004] To overcome one or more of the above-mentioned technical defects, this utility model provides a subway contact rail short-circuit simulation system. By simulating subway operation emergencies such as subway contact rail short-circuit accidents, it helps staff to take timely measures to deal with accidents and better manage and dispatch trains.

[0005] To solve the above problems, this utility model is implemented according to the following technical solution:

[0006] A subway train contact rail short-circuit simulation system includes a power supply, a control relay, a voltage regulator, a switch cabinet simulation circuit, a contact rail, a steel rail, and a DC geared motor. The DC geared motor is connected to the power supply and is installed between the contact rail and the steel rail. The output end of the DC geared motor is provided with a short-circuit conductor. The short-circuit conductor has a rod-shaped structure and its length is greater than or equal to the distance between the contact rail and the steel rail.

[0007] The positive terminal of the power supply is connected to the positive terminal of the voltage regulator through the first normally open contact of the control relay. The negative terminal of the voltage regulator is connected to the switch cabinet simulation circuit. The switch cabinet simulation circuit is connected to the negative terminal of the power supply through the second normally open contact of the control relay. The voltage regulator is connected to the contact rail and the steel rail respectively.

[0008] Furthermore, the switchgear analog circuit includes a contact wire isolating switch, a first DC feeder switch and a second DC feeder switch connected in parallel, and a DC input switch. One end of the contact wire isolating switch is connected to the negative terminal of the voltage regulator, and the other end is connected to the first DC feeder switch and the second DC feeder switch respectively. The other ends of the first DC feeder switch and the second DC feeder switch are both connected to the second normally open contact of the control relay through the DC input switch.

[0009] Furthermore, it also includes a first shunt and a waveform recorder. One end of the first shunt is connected to the positive terminal of the power supply, and the other end is connected to the first normally open contact of the control relay. The waveform recorder is connected to the output terminal of the first shunt.

[0010] Furthermore, it also includes a relay protection device, one end of which is connected to the output terminal of the first shunt, and the other end is connected to the switch cabinet analog circuit.

[0011] Furthermore, it also includes a voltmeter, a red terminal, and a black terminal. The voltmeter is connected to the output terminal of the voltage regulator. The positive output terminal of the voltage regulator is connected to the contact rail through the red terminal, and the negative output terminal of the voltage regulator is connected to the rail through the black terminal.

[0012] Furthermore, it also includes a second shunt and an ammeter. The second shunt is connected to the switch cabinet analog circuit and the negative terminal of the power supply, respectively, and the ammeter is connected to the second shunt.

[0013] Furthermore, it also includes a control panel, which is equipped with a motor start button and a relay start button. The motor start button is connected to the DC geared motor, and the relay start button is connected to the coil of the control relay.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model discloses a subway train contact rail short-circuit simulation system, including a power supply, a control relay, a voltage regulator, a switch cabinet simulation circuit, a contact rail, a steel rail, and a DC geared motor. The DC geared motor is connected to the power supply and is positioned between the contact rail and the steel rail. A short-circuit conductor is installed at the output end of the DC geared motor. The short-circuit conductor has a rod-like structure and its length is greater than or equal to the distance between the contact rail and the steel rail. The voltage regulator is connected to both the contact rail and the steel rail. Adjusting the output voltage of the voltage regulator allows for the regulation of the subway train speed. When a contact rail short-circuit test is required, the DC geared motor operates, causing the short-circuit conductor to rotate and connect the contact rail and the steel rail, simulating a contact rail short-circuit fault. This helps staff take timely measures in case of an accident and improves train management and scheduling. Attached Figure Description

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0017] Figure 1 This is a schematic diagram of the subway train contact rail short-circuit simulation system described in Example 1. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the subway train contact rail short-circuit simulation system described in Example 1. Figure 2 ;

[0019] Labeling Explanation: 1. Power Supply; 2. Control Relay; 3. Voltage Regulator; 4. Switchgear Simulation Circuit; 411. Contact Line Isolating Switch; 412. First DC Feeder Switch; 413. Second DC Feeder Switch; 414. DC Incoming Switch; 5. Contact Rail; 6. Rail; 7. DC Gear Motor; 8. Short-Circuit Conductor; 9. Green Terminal; 10. First Shunt; 11. Blue Terminal; 12. Waveform Recorder; 13. Relay Protection Device; 14. Voltmeter; 15. Red Terminal; 16. Black Terminal; 17. Second Shunt; 18. Ammeter. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example 1

[0022] This embodiment discloses a subway train contact rail short-circuit simulation system, such as Figure 1 and 2 It includes a power supply 1, a control relay 2, a voltage regulator 3, a switch cabinet analog circuit 4, a contact rail 5, a steel rail 6, and a DC geared motor 7. The DC geared motor 7 is located between the contact rail 5 and the steel rail 6. The output end of the DC geared motor 7 is equipped with a short-circuit conductor 8. The short-circuit conductor 8 is a rod-shaped structure and its length is greater than or equal to the distance between the contact rail 5 and the steel rail 6.

[0023] The positive terminal of power supply 1 is connected to the positive terminal of voltage regulator 3 via the first normally open contact (5-9) of control relay 2. The negative terminal of voltage regulator 3 is connected to the switch cabinet simulation circuit 4. The switch cabinet simulation circuit 4 is connected to the negative terminal of power supply 1 via the second normally open contact (8-12) of control relay 2. Voltage regulator 3 is connected to contact rail 5 and steel rail 6 respectively. When DC geared motor 7 is working, it drives short-circuit conductor 8 to rotate and connect contact rail 5 and steel rail 6, realizing contact rail short-circuit simulation. Specifically, power supply 1 is a 24V DC power supply.

[0024] Specifically, it also includes a green terminal 9, through which the voltage regulator 3 and the negative terminal of the power supply 1 are respectively connected to the switch cabinet analog circuit 4.

[0025] In this embodiment, the switchgear analog circuit 4 includes a contact wire isolating switch 411, a first DC feeder switch 412 and a second DC feeder switch 413 connected in parallel, and a DC input switch 414. The negative terminal of the voltage regulator 3 is connected to the contact wire isolating switch 411 through the green terminal 9. The other end of the contact wire isolating switch 411 is connected to the first DC feeder switch 412 and the second DC feeder switch 413 respectively. The other ends of the first DC feeder switch 412 and the second DC feeder switch 413 are connected to the DC input switch 414. The DC input switch 414 is connected to the second normally open contact (8-12) of the control relay 2 through the green terminal 9.

[0026] In this embodiment, the system also includes a first shunt 10, a blue terminal 11, a waveform recorder 12, and a relay protection device 13. One end of the first shunt 10 is connected to the positive terminal of the power supply 1, and the other end is connected to the first normally open contact (5-9) of the control relay 2. The output terminal of the first shunt 10 is connected to the waveform recorder 12 and the relay protection device 13 respectively through the blue terminal 11. The waveform recorder 12 can record the current waveform changes when the subway train is working. The other end of the relay protection device 13 is connected to the first DC feeder switch 412 and the second DC feeder switch 413 respectively. Specifically, the relay protection device 13 is a DCR150A DC traction protection and control device.

[0027] In this embodiment, a voltmeter 14, a red terminal 15, and a black terminal 16 are also included. The voltmeter 14 is connected to the output terminal of the voltage regulator 3. The positive output terminal of the voltage regulator 3 is connected to the contact rail 5 through the red terminal 15, and the negative output terminal of the voltage regulator 3 is connected to the rail 6 through the black terminal 16.

[0028] In this embodiment, a second shunt 17 and an ammeter 18 are also included. The second shunt 17 is connected to the DC input switch 414 and the negative terminal of the power supply 1, respectively. The ammeter 18 is connected to the second shunt 17 to detect the real-time current value in the circuit.

[0029] In this embodiment, a control panel (not shown in the figure) is also included. The control panel is equipped with a motor start button and a relay start button. The motor start button is connected to the DC geared motor 7, and the relay start button is connected to the coil of the control relay 2.

[0030] The following explanation is based on the specific implementation process:

[0031] Close the DC incoming line switch, the first DC feeder switch or the second DC feeder switch, and the contact wire isolating switch in sequence. Press the relay start button on the control panel to start the control relay and form a power supply circuit. Power is supplied to the contact rail through the voltage regulator and the red terminal, and power is supplied to the rail through the voltage regulator and the black terminal. At this time, the train can collect voltage for power reception.

[0032] The train speed is adjusted by regulating the output voltage of the voltage regulator. A waveform recorder records the current waveform during train operation, and a relay protection device records the current value. Operators can also observe voltage and current changes in the simulation system using voltmeters and ammeters. During a contact rail short-circuit test, pressing the motor start button on the control panel starts the DC geared motor. The DC geared motor drives the short-circuit conductor to rotate and connect the contact rail to the rail, creating a short circuit and simulating a contact rail short-circuit fault.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A short-circuit simulation system for subway train contact rails, characterized in that, It includes a power supply, control relays, voltage regulators, switch cabinet analog circuits, contact rails, steel rails, and a DC geared motor. The DC geared motor is connected to the power supply and is located between the contact rails and steel rails. The output end of the DC geared motor is equipped with a short-circuit conductor, which is a rod-shaped structure with a length greater than or equal to the distance between the contact rails and steel rails. The positive terminal of the power supply is connected to the positive terminal of the voltage regulator through the first normally open contact of the control relay. The negative terminal of the voltage regulator is connected to the switch cabinet simulation circuit. The switch cabinet simulation circuit is connected to the negative terminal of the power supply through the second normally open contact of the control relay. The voltage regulator is connected to the contact rail and the steel rail respectively.

2. The subway train contact rail short-circuit simulation system according to claim 1, characterized in that, The switchgear simulation circuit includes a contact wire isolating switch, a first DC feeder switch and a second DC feeder switch connected in parallel, and a DC input switch. One end of the contact wire isolating switch is connected to the negative terminal of the voltage regulator, and the other end is connected to the first DC feeder switch and the second DC feeder switch respectively. The other ends of the first DC feeder switch and the second DC feeder switch are both connected to the second normally open contact of the control relay through the DC input switch.

3. The subway train contact rail short-circuit simulation system according to claim 1, characterized in that, It also includes a first shunt and a waveform recorder. One end of the first shunt is connected to the positive terminal of the power supply, and the other end is connected to the first normally open contact of the control relay. The waveform recorder is connected to the output terminal of the first shunt.

4. The subway train contact rail short-circuit simulation system according to claim 3, characterized in that, It also includes a relay protection device, one end of which is connected to the output terminal of the first shunt and the other end is connected to the switch cabinet analog circuit.

5. The subway train contact rail short-circuit simulation system according to claim 1, characterized in that, It also includes a voltmeter, a red terminal, and a black terminal. The voltmeter is connected to the output terminal of the voltage regulator. The positive output terminal of the voltage regulator is connected to the contact rail through the red terminal, and the negative output terminal of the voltage regulator is connected to the rail through the black terminal.

6. The subway train contact rail short-circuit simulation system according to claim 1, characterized in that, It also includes a second shunt and an ammeter. The second shunt is connected to the switch cabinet analog circuit and the negative terminal of the power supply, respectively, and the ammeter is connected to the second shunt.

7. The subway train contact rail short-circuit simulation system according to claim 1, characterized in that, It also includes a control panel, which is equipped with a motor start button and a relay start button. The motor start button is connected to the DC geared motor, and the relay start button is connected to the coil of the control relay.

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