Simulation method of rail transit AC switch machine

Abstract

The application innovatively provides a simulation method of an AC switch machine of rail transit, and the simulation of the operation and state of the switch machine is completed by controlling the contacts of the magnetic latching relay through the change of the three-phase voltage during the fixed operation and the reverse operation, and the normally closed and normally open contacts of the magnetic latching relay correspond to the simulation of the fixed position and reverse position state of the switch machine, and no intervention of people or processors is needed. The method has the advantages of long service life, small occupied space, light weight, no noise, convenient simulation of faults, adjustable phase current, low price and the like. Compared with the existing simulation switch machine scheme, the method has the advantages of consistent wiring with the actual switch machine, no need to connect from the motor common line, adoption of standard general relays, small size, no need for a logic processor to complete closed-loop control, full automation, no manual operation of high voltage, safety and reliability, intuitive and convenient quick adjustment of the fixed operation time and the reverse operation time through the time relay, completion of the control of the fixed operation and the reverse operation through the measurement of the phase voltage, and the like.

Description

Technical Field

[0001] This invention belongs to the field of rail transit communication signal control technology, specifically relating to a simulation implementation method for an AC switch machine in rail transit. Background Technology

[0002] In recent years, the rail transit industry has developed rapidly, and switch machines, as one of the most important signaling devices in rail transit, play a vital role in rail transit operations. Switch machines are classified into DC switch machines and AC switch machines according to the power supply of their motors, with AC switch machines accounting for the majority and widely used in rail transit lines.

[0003] AC switch machines are controlled by the interlocking host via a fully electronic interface or a relay interface. In production enterprises and user sites, AC switch machines need frequent operation, and their status needs to be collected. However, AC switch machines are physically complex, weighing nearly 150 kg and costing over 30,000 yuan, and are inconvenient to move. Existing analog switch machines have several problems: some require manual operation, some require processors, some require rail transit-specific polarized relays, some cannot change the rotation time, and some have unadjustable motor current.

[0004] The closest prior art invention to this invention is called a three-phase five-wire electric switch machine simulation box, application number 202511002842.5, hereinafter referred to as Prior Art Document 1. The disadvantages of the technical solution adopted in Prior Art Document 1 are: 1. It uses the connection wires of X5 and motor coils ABC to connect to a 220V AC-to-DC power supply for fixed operation, and uses the shared connection wire of X4 and ABC to connect to a 220V AC-to-DC power supply for reverse operation. The disadvantage is that for actual five-wire switch machines in the field, the shared wire of ABC is not used as a neutral wire indoors, so it cannot complete the 220V power input and be used for actual field testing. Even for teaching purposes, the shared wire of ABC depends on the current balance of ABC and cannot be simply used as a neutral wire for 220V; 2. It uses a dedicated polarized signal device, which requires a special base for installation, is heavy, costs over 3000 RMB, is difficult to fix, and requires a specially customized box.

[0005] This equipment is used to simulate a three-phase five-wire electric switch machine, and its features and performance are exactly the same as those of a real AC five-wire switch machine. Users can connect it to the turnout control circuit for scheduled and reverse operation, and collect the status of the switch machine. Summary of the Invention

[0006] Actual AC switch machines suffer from problems such as large size, heavy weight, inconvenience in simulating faults, high cost, and noise generation during operation. Existing simulated switch machines require manual operation or processor processing and cannot change the rotation time.

[0007] This invention simulates a switch machine by controlling the contacts of a magnetic latching relay with three-phase voltage, without requiring human or processor intervention, thus perfectly solving the aforementioned problems. Attached Figure Description Figure 1 AC analog switch machine schematic diagram; Figure 2 Reverse operation principle diagram; Figure 3 Diagram of the fixed-operation principle; Figure 4 A physical image of an AC-simulated switch machine.

[0008] The components of this device are as follows: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it consists of two 380V relays J1 and J2, two time relays J3 and J4 (time relays adjustable from 0 to 30 seconds), two magnetic latching relays J5 and J6, diodes D1 and D2, high-power resistors A, B, C and R1, and circuit breakers CB1-CB5.

[0009] Relay J1 is connected between X5 and X1. When a scheduled operation is performed indoors, J1 is energized because there is a 380V AC voltage between X5 and X1. Relay J2 is connected between X4 and X1. When a reverse operation is performed indoors, J2 is energized because there is a 380V AC voltage between X4 and X1.

[0010] When reverse operation is performed, the time relay J4 is energized and energized because J2 is energized. After the set time (0-30 seconds), the reverse operation is completed and the setting signal (pin13) of the magnetic latching relays J5 and J6 is output from pin3 of the J4 relay.

[0011] When a fixed operation is performed, the time relay J3 is energized and energized because J1 is energized. After the set time (0-30 seconds), the pin3 of the J3 relay outputs the reset signal (pin9) to the magnetic latching relays J5 and J6 to indicate that the fixed operation is completed.

[0012] To ensure reliable engagement of the internal contacts of the simulated relay switch machine, the contacts of a magnetic latching relay are used to simulate the contacts of the automatic switch mechanism inside an actual switch machine. The normally closed contacts of the magnetic latching relay correspond to the switch machine's positioning, while the normally open contacts correspond to the reverse position.

[0013] The three coils A, B, and C of the motor are simulated by three high-power resistors.

[0014] Fixed operation. At this time, magnetic latching relays J5 and J6 are in the set state, and the indoor equipment outputs 380V voltage to X1, X2, and X5. Specifically, X1→CB1→A; X2→CB2→J5 (pin11-pin8-pin1)→B; X5→CB5→J6 (pin5-pin10)→C. With three phases A, B, and C energized, while the indoor equipment outputs 380V voltage to X1, X2, and X5, → J1 is energized → J3 time relay is energized (adjustable from 0-30 seconds) → after the delay time, J3 (pin1-pin3 closes) → fixed operation complete (GND) output to pin9 of J5 and J6 → J5 and J6 reset → the normally closed contacts of J5 and J6 close. Fixed operation complete, the device operates to the positioning state. At this time, the normally closed contacts of J5 and J6 close.

[0015] Reverse Operation. The indoor equipment outputs 380V voltage to X1, X3, and X4. Specifically, X1→CB1→A; X3→CB3→J5 (pin10-pin1)→B; X4→CB4→J6 (pin1-pin10)→C. With phases A, B, and C energized, while the indoor equipment outputs 380V to X1, X3, and X4, → J2 is energized → J4 time relay is energized (adjustable from 0-30 seconds) → after the delay time, J4 (pin1-pin3 closes) → reverse operation completes (GND) output to pin13 of J5 and J6 → J5 and J6 are set → normally open contacts of J5 and J6 close. Reverse operation complete, the device operates in the reverse position. At this time, the normally open contacts of J5 and J6 are closed.

[0016] Positioning indicator circuit. At this time, J5 and J6 magnetic latching relays are in the reset state, and the normally closed contacts are closed. BB indicates that when the voltage is 3+4-, 110V+ → X2 → CB2 → J5 (pin11-pin4) → D1 → R1 → B → A → CB1 → X1 → 110V-; BB indicates that when the voltage is 3-4+, 110V+ → X1 → CB1 → A → C → J6 (pin10-pin1) → CB4 → X4 → 110V-.

[0017] The circuit is in reverse position. At this time, the magnetic latching relays J5 and J6 are in the set state, and their normally open contacts are closed. BB indicates that when the voltage is 3+4-, the sequence is: 110V+ → X5 → CB5 → J6 (pin5-pin10) → C → A → CB1 → X1 → 110V-; BB indicates that when the voltage is 3-4+, the sequence is: 110V+ → X1 → CB1 → A → B → R1 → D2 → J5 (pin5-pin10) → CB3 → X3 → 110V-.

[0018] The simulated switch machine of this invention can be used to simulate AC switch machines such as S700K, ZDJ9, and ZYJ7, and has the following advantages compared with actual switch machines: Long lifespan. The frequent operation of real-world switch machines affects their lifespan, causing wear and tear on mechanical parts. Simulated switch machines do not have this problem, making them ideal for scenarios involving prolonged and frequent operation, such as testing electronic modules for fully electronic turnouts.

[0019] It occupies little space and is lightweight. Actual switch machines require a large amount of space, while this product only needs two rows of a standard cabinet. If a fully electronic turnout module requires full-load testing of multiple modules, or if multiple switch machines are needed, a simulated switch machine is more suitable than an actual switch machine. It weighs only as much as a few electronic components, making it easy to move.

[0020] No noise. Actual switch machines generate significant noise during operation, affecting the surrounding environment. This simulated switch machine only produces the sound of electronic relays. Convenient for simulating faults. Faults that cannot be simulated on actual switch machines can be easily simulated on the simulated switch machine, such as phase loss, phase interruption, and wire breakage. Adjustable phase current. While the phase current of an actual switch machine is fixed, the phase current of this simulated switch machine can be varied.

[0021] The price is low. The price of a simulated switch machine is lower than that of an actual switch machine.

[0022] Compared with existing analog switch machines, it has the following advantages: It has the same structure as a real switch machine and does not need to be connected to the common wire of the motor; It uses standard general-purpose relays, eliminating the need for rail transit-specific safety relays, resulting in lower costs. It uses a guide rail for mounting, eliminating the need for a printed circuit board, making installation quick and easy; It does not require a logic processor and completes closed-loop control on its own. Fully automatic, no manual operation required, high-voltage electricity, safe and reliable; The set operation time and reverse operation time can be adjusted quickly and easily via a time relay; Control is achieved by measuring phase voltage to perform both fixed and reverse operations; The magnitude of the three-phase current can be changed by altering the resistance values ​​of A, B, and C.

[0023] To address the shortcomings of prior art document 1, this invention employs technical feature 1, connecting a 380V relay between X5 and X1 to complete the fixed operation, and connecting a 380V relay between X4 and X1 to complete the reverse operation. It avoids connecting from the outdoor ABC connection lines, ensuring the simulated switch machine's architecture is consistent with the actual switch machine. Technical feature 2 uses magnetic latching relays to simulate and control the positioning and reverse states, offering low cost at just over 30 yuan per unit. Technical feature 3 uses universal magnetic latching relays, supporting rail mounting and other installation methods, allowing for quick and convenient fixed assembly, lightweight design, and easy relocation.

[0024] This device can be used for on-site testing in rail transit, factory debugging in manufacturing enterprises, and equipment simulation in colleges and universities.

Claims

1. The simulation device of the rail transit AC switch machine is characterized in that, The switch machine simulation is completed by controlling the contacts of the magnetic latching relay with three-phase voltage, without the need for human or processor intervention.

2. The simulation device for an AC switch machine in rail transit according to claim 1 comprises two 380V relays J1 and J2, two time relays J3 and J4, the time relays being adjustable from 0 to 30 seconds, two magnetic latching relays J5 and J6, diodes D1 and D2, high-power resistors A, B, C and R1, and circuit breakers CB1-CB5.

3. The simulation device for an AC switch machine in rail transit according to claim 1, wherein relay J1 is connected between X5 and X1, and J1 is energized when the switch is operated indoors, due to the 380V AC voltage between X5 and X1. Relay J2 is connected between X4 and X1, and J2 is energized when the switch is operated indoors, due to the 380V AC voltage between X4 and X1.

4. In the simulation device for an AC switch machine in rail transit according to claim 1, when reversing operation is performed, J2 is energized and activated because of the energizing of time relay J4. After a set time (0-30 seconds), pin 3 of relay J4 outputs a reversing operation completion signal (pin 13) to magnetic latching relays J5 and J6. When resetting operation is performed, J1 is energized and activated because of the energizing of time relay J3. After a set time (0-30 seconds), pin 3 of relay J3 outputs a resetting operation completion signal (pin 9) to magnetic latching relays J5 and J6.

5. In accordance with claim 1, a simulation device for an AC switch machine in rail transit is provided, in order to reliably maintain the internal contacts of the simulated relay switch machine, the contacts of a magnetic latching relay are used to simulate the contacts of the automatic switch mechanism inside the actual switch machine. The normally closed contacts of the magnetic latching relay correspond to the switch machine's positioning, and the normally open contacts correspond to the reverse position.

6. The simulation device for an AC switch machine in rail transit according to claim 1, wherein the fixed operation, reverse operation, fixed meter, and reverse meter working circuits are as follows: Fixed Operation. In the initial state, magnetic latching relays J5 and J6 are in the set state, the normally open contacts are closed, and the indoor equipment outputs 380V voltage to X1, X2, and X5. Wherein X1→CB1→A; X2→CB2→J5 (pin11-pin8-pin1)→B; X5→CB5→J6 (pin5-pin10)→C. When the three phases A, B, and C are energized, while the indoor equipment outputs 380V voltage to X1, X2, and X5, → J1 is energized → J3 time relay is energized (adjustable from 0-30 seconds) → after the delay time, J3 (pin1-pin3 closes) → fixed operation completed (GND) output to pin9 of J5 and J6 → J5 and J6 reset → normally closed contacts of J5 and J6 close. Fixed operation completed, the device operates to the positioning state. At this time, the normally closed contacts of J5 and J6 are closed. Reverse operation. Initially, the magnetic latching relays J5 and J6 are in the reset state, their normally closed contacts are closed, and the indoor equipment outputs 380V voltage to X1, X3, and X4. Specifically, X1→CB1→A; X3→CB3→J5 (pin10-pin1)→B; X4→CB4→J6 (pin1-pin10)→C. With phases A, B, and C energized, while the indoor equipment outputs 380V voltage to X1, X3, and X4, → J2 is energized → J4 time relay is energized (adjustable from 0-30 seconds) → after the delay time, J4 (pin1-pin3 closes) → reverse operation complete (GND) output to pin13 of J5 and J6 → J5 and J6 are set → the normally open contacts of J5 and J6 close. Reverse operation complete, the device operates in the reverse position. At this time, the normally open contacts of J5 and J6 are closed. Position indication circuit. At this time, J5 and J6 magnetic latching relays are in the reset state, and their normally closed contacts are closed. BB indicates that when the voltage is 3+4-, the sequence is: 110V+ → X2 → CB2 → J5 (pin11-pin4) → D1 → R1 → B → A → CB1 → X1 → 110V-; BB indicates that when the voltage is 3-4+, the sequence is: 110V+ → X1 → CB1 → A → C → J6 (pin10-pin1) → CB4 → X4 → 110V-. This is a reversed position indication circuit. At this time, J5 and J6 magnetic latching relays are in the set state, and their normally open contacts are closed. BB indicates that when the voltage is 3+4-, 110V+→X5→CB5→J6(pin5-pin10)→C→A→CB1→X1→110V-; BB indicates that when the voltage is 3-4+, 110V+→X1→CB1→A→B→R1→D2→J5(pin5-pin10)→CB3→X3→110V-.

Images