Portable intelligent operation box for railway signal alternating-current turnout

Abstract

The utility model belongs to the technical field of turnout signal debugging, and aims to solve the problems that turnout operation box equipment is bloated and wiring is complicated. The portable railway signal alternating current turnout intelligent operation box is characterized in that an input end X0 of a controllable programmable logic controller (PLC) is connected with a fixed operation button SB1, an input end X1 is connected with a reverse operation button SB2, and an input end X2 is connected with an emergency stop button SB0; the output end Y0 of the PLC is connected with a coil of the fixed operation contactor KM1, the output end Y1 of the PLC is connected with a coil of the reverse operation contactor KM2, the output ends Y2 and Y3 of the PLC are respectively connected with the wiring W1 and W2 of the switch machine, and the two ends of the fixed meter lamp L1 are respectively connected with the wiring W2 and W4 of the switch machine; the output end Y4 and the output end Y5 are respectively connected with the wiring W1 and the wiring W3 of the switch machine, and the two ends of the reverse meter lamp L2 are respectively connected with the wiring W3 and the wiring W5 of the switch machine. The device is low in cost, short in manufacturing period and capable of reducing use of electrical components and reducing the failure rate.

Description

Technical Field

[0001] The utility model belongs to the technical field of turnout signal debugging, and in particular relates to a portable railway signal AC turnout intelligent operating box. Background Art

[0002] Railway switch is an important part of railway signal equipment, responsible for controlling the switching of railway turnouts to ensure that trains can travel safely and accurately along the predetermined path. Debugging railway switch is a complex and critical process. There are generally two ways: one is to use the control console (or operating table) to perform single operation of outdoor switch equipment (i.e. separate positioning operation and reverse operation); the other is to make the indoor turnout control combination into an operating box and move it outdoors for testing.

[0003] Use a control console (or operating table) to perform single operation (i.e., separate positioning operation and reverse operation) of outdoor switch equipment. Although this method is the safest for operating switch machines, it needs to be carried out within the skylight points. When faced with the construction of overdue replacement of switch machines on existing lines, more skylight points are needed for testing and replacement, which will not only affect railway transportation, but also pose a considerable challenge to the technical level of construction personnel and construction costs.

[0004] Move the indoor turnout control assembly outdoors for testing. Although this method can meet the test requirements, it is bulky and heavy when fully plugged with relays, and requires more manpower to move it to the site for testing. A single relay is expensive, and the relays of a turnout control assembly are even more expensive.

[0005] There is currently a lack of an intelligent control box for railway signal AC turnouts that has a short production cycle, low cost, and is easy to carry. Utility Model Content

[0006] In order to solve at least one of the above technical problems existing in the prior art, the utility model provides a portable railway signal AC turnout intelligent operating box.

[0007] The utility model is implemented by the following technical solutions: a portable railway signal AC turnout intelligent control box, comprising a box body, and a control circuit arranged inside the box body;

[0008] The control circuit includes a programmable logic controller PLC, a fixed-operation contactor KM1, a reverse-operation contactor KM2, a switching power supply, a transformer and a three-phase power supply;

[0009] The input terminal X0 of the programmable logic controller PLC is connected to the fixed operation button SB1, the input terminal X1 is connected to the reverse operation button SB2, and the input terminal X2 is connected to the emergency stop button SB0;

[0010] The output terminal Y0 of the programmable logic controller PLC is connected to the coil of the fixed-operation contactor KM1, the output terminal Y1 is connected to the coil of the reverse-operation contactor KM2, the terminals Y2 and Y3 are respectively connected to the wiring W1 and W2 of the switch machine, and the two ends of the fixed meter lamp L1 are respectively connected to the wiring W2 and W4 of the switch machine; the terminals Y4 and Y5 are respectively connected to the wiring W1 and W3 of the switch machine, and the two ends of the reverse-operation lamp L2 are respectively connected to the wiring W3 and W5 of the switch machine; the normally closed contact of the fixed-operation contactor KM1 is connected between the terminal Y2 and the wiring W1, the normally closed contact of the fixed-operation contactor KM1 is connected between the terminal Y3 and the wiring W2, the normally closed contact of the reverse-operation contactor KM2 is connected between the terminal Y4 and the wiring W3, and the normally closed contact of the reverse-operation contactor KM2 is connected between the terminal Y5 and the wiring W1;

[0011] One end of the three normally open contacts of the fixed-operation contactor KM1 are respectively connected to the A, B, and C phases of the three-phase power supply, and the other ends are respectively connected to the wiring W1, W2, and W5 of the switch machine; one end of the three normally open contacts of the reverse-operation contactor KM2 are respectively connected to the A, B, and C phases of the three-phase power supply, and the other ends are respectively connected to the wiring W1, W4, and W3 of the switch machine; the three-phase power supply provides power to the controllable logic controller PLC through the switching power supply and the transformer.

[0012] Preferably, the switching power supply is used to convert 380V three-phase electricity into 24V direct current. The input terminals L1 and L2 of the switching power supply are respectively connected to the A phase and C phase of the three-phase power supply. The output terminal -24V of the switching power supply is respectively connected to the input terminal -24V of the programmable logic controller PLC and two COM terminals connected to the fixed operation contactor KM1 and the reverse operation contactor KM2. The output terminal +24V of the switching power supply is connected to the input terminal +24V of the programmable logic controller PLC.

[0013] Preferably, the transformer is used to convert 380V three-phase electricity into 24V AC electricity, the input terminals L1 and L2 of the transformer are respectively connected to the A phase and C phase of the three-phase power supply, and the output terminals L and N of the transformer are connected to the output terminal COM of the programmable logic controller PLC.

[0014] Preferably, a current sensor is connected between the normally open contact of the fixed contactor KM connected to the A phase of the three-phase power supply and the wiring W1 of the switch machine, and the current collection end of the programmable logic controller PLC is connected to the collection output side of the current sensor.

[0015] Preferably, it also includes a phase failure protector, wherein terminals 1, 2, and 3 of the phase failure protector are respectively connected to phases A, B, and C of the three-phase power supply, terminal 5 of the phase failure protector is connected to the starting coils of the fixed operation contactor KM1 and the reverse operation contactor KM2, terminals 6 and 7 of the phase failure protector are connected to +24V and -24V power supplies, terminal 8 of the phase failure protector is connected to the -24V terminal of the buzzer flash alarm, and the +24V terminal of the buzzer flash alarm is connected to the +24V power supply.

[0016] Preferably, the outer surface of the box is provided with a fixed operation button SB1, a reverse operation button SB2, an emergency stop button SB0, a fixed meter light L1, a reverse meter light L2, a buzzer flash alarm, a circuit breaker K1 and an ammeter, and the ammeter is used to display the current collected by the current sensor.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] Compared with the method of using a control console (or operating table) to perform single operation (i.e., separate positioning operation and reverse operation) of outdoor switch equipment, the portable railway signal AC turnout intelligent operation box is more suitable for use by on-site debugging personnel, eliminating a series of tedious steps such as frequent contact and confirmation with the control console, thereby improving work efficiency.

[0019] Compared with the method of moving the indoor turnout control assembly into a control box and moving it outdoors for testing, the portable railway signal AC turnout intelligent control box is small in size and easy to carry, saving the cost of manual handling and the risk of damage to equipment such as relays;

[0020] Compared with the method of using a portable turnout control box for testing, the portable railway signal AC turnout intelligent control box has a lower production cost, saving the cost of factory processing circuit boards; the intelligent control box has a short production cycle and related accessories are easy to obtain, reducing maintenance costs; the intelligent control box replaces the original electrical integrated circuits with programs, reducing the use of electrical components and reducing the failure rate; at the same time, with the reduction of electrical components, the box can be made smaller, lighter, and easier for testers to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 1 is a circuit diagram of the control circuit of the present embodiment;

[0023] Figure 2is a schematic diagram of the operation panel at the box body of this embodiment;

[0024] Figure 3 This is a circuit schematic diagram of the switch machine internal wiring connection of this embodiment (when terminals Y2 and Y3 obtain positioning indication command output);

[0025] Figure 4 It is a circuit schematic diagram of the internal wiring connection of the switch machine of this embodiment (when the terminals Y4 and Y5 obtain the reverse position to indicate the command output).

[0026] Combined with the drawings in the embodiments of the utility model, the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between these entities. DETAILED DESCRIPTION

[0028] The utility model provides an embodiment:

[0029] like Figure 1 , Figure 2 A portable railway signal AC turnout intelligent operating box is shown, comprising a box body and an operating circuit arranged inside the box body;

[0030] The control circuit includes a programmable logic controller PLC, a fixed-operation contactor KM1, a reverse-operation contactor KM2, a switching power supply, a transformer and a three-phase power supply; the input terminal X0 of the programmable logic controller PLC is connected to the fixed-operation button SB1, the input terminal X1 is connected to the reverse-operation button SB2, and the input terminal X2 is connected to the emergency stop button SB0;

[0031] The output terminal Y0 of the programmable logic controller PLC is connected to the coil of the fixed-operation contactor KM1, the output terminal Y1 is connected to the coil of the reverse-operation contactor KM2, the terminals Y2 and Y3 are respectively connected to the wiring W1 and W2 of the switch machine, and the two ends of the fixed meter lamp L1 are respectively connected to the wiring W2 and W4 of the switch machine; the terminals Y4 and Y5 are respectively connected to the wiring W1 and W3 of the switch machine, and the two ends of the reverse-operation lamp L2 are respectively connected to the wiring W3 and W5 of the switch machine; the normally closed contact of the fixed-operation contactor KM1 is connected between the terminal Y2 and the wiring W1, the normally closed contact of the fixed-operation contactor KM1 is connected between the terminal Y3 and the wiring W2, the normally closed contact of the reverse-operation contactor KM2 is connected between the terminal Y4 and the wiring W3, and the normally closed contact of the reverse-operation contactor KM2 is connected between the terminal Y5 and the wiring W1;

[0032] like Figure 3 As shown, when terminals Y2 and Y3 receive the positioning indication instruction given by PLC, the Y2 terminal side, wiring W1, the internal circuit of the switch machine, wiring W4, the fixed meter lamp L1, and the Y3 terminal side form a loop, so that the fixed meter lamp L1 lights up, indicating that the turnout is positioned and moved in place;

[0033] like Figure 4 As shown, when terminals Y4 and Y5 receive the reverse position indication instruction given by PLC, a loop is formed among the Y5 terminal side, wiring W1, the internal circuit of the switch machine, wiring W5, reverse indicator light L2, and the Y4 terminal side, so that the reverse indicator light L2 lights up, indicating that the turnout has been moved to the reverse position.

[0034] The specific internal circuit schematic diagram of the switch machine is the prior art.

[0035] One end of the three normally open contacts of the fixed contactor KM1 is connected to the A, B, and C phases of the three-phase power supply, and the other end is connected to the wiring W1, W2, and W5 of the switch machine; one end of the three normally open contacts of the reverse contactor KM2 is connected to the A, B, and C phases of the three-phase power supply, and the other end is connected to the wiring W1, W4, and W3 of the switch machine; the three-phase power supply provides power to the controllable logic controller PLC through the switching power supply and the transformer. The fixed contactor KM1 and the reverse contactor KM2 are used to control the forward and reverse rotation of the switch machine. By pressing the fixed and reverse buttons, the contact relay is controlled to absorb and fall to control the on and off of the start power supply of the switch machine.

[0036] The switching power supply is used to convert 380V three-phase electricity into 24V DC. The input terminals L1 and L2 of the switching power supply are connected to the A phase and C phase of the three-phase power supply respectively. The output terminal -24V of the switching power supply is connected to the input terminal -24V of the controllable programmable logic controller PLC and two COM terminals connected to the fixed contactor KM1 and the reverse contactor KM2 respectively. The output terminal +24V of the switching power supply is connected to the input terminal +24V of the controllable programmable logic controller PLC. The transformer is used to convert 380V three-phase electricity into 24V AC. The input terminals L1 and L2 of the transformer are connected to the A phase and C phase of the three-phase power supply respectively. The output terminals L and N of the transformer are connected to the output terminal COM of the controllable programmable logic controller PLC.

[0037] A current sensor is connected between the normally open contact of the fixed operating contactor KM connected to the A phase of the three-phase power supply and the wiring W1 of the switch machine, and the current collection end of the programmable logic controller PLC is connected to the collection output side of the current sensor.

[0038] The present application also includes a phase failure protector, wherein terminals 1, 2, and 3 of the phase failure protector are respectively connected to phases A, B, and C of a three-phase power supply, terminal 5 of the phase failure protector is connected to the starting coils of the fixed-operation contactor KM1 and the reverse-operation contactor KM2, terminals 6 and 7 of the phase failure protector are connected to +24V and -24V power supplies, terminal 8 of the phase failure protector is connected to the -24V terminal of a buzzer-type flash alarm, and the +24V terminal of a buzzer-type flash alarm is connected to a +24V power supply.

[0039] The box is equipped with a fixed operation button SB1, a reverse operation button SB2, an emergency stop button SB0, a fixed meter light L1, a reverse meter light L2, a buzzer-type flashing alarm, a circuit breaker K1 and an ammeter. The ammeter is used to display the current collected by the current sensor, that is, to monitor the start-up current of the turnout. The circuit breaker K1 is a circuit breaker with a rated current of 5A; the fixed operation button SB1 is a green self-resetting travel switch used to connect the fixed operation (reverse→fixed) start-up circuit; the reverse operation button SB2 is a yellow self-resetting travel switch used to connect the reverse operation (fixed→reverse) start-up circuit; the emergency stop button SB0 is a red non-self-resetting travel switch used to urgently disconnect the turnout start-up circuit; the buzzer-type flashing alarm is a turnout phase loss, phase break and phase error alarm device, and the alarm state is a buzzer plus a flashing red light.

[0040] Specific operating steps: When in use, connect the three-phase AC power supply A, B, C3 wires and the switch W1, W2, W3, W4, W5 wiring to the WANKO wiring terminals 1, 2, 3 of the three-phase power input of the control box, close the power switch, power on the corresponding phase failure protector for inspection, and the buzzer-type flash alarm will sound. After the phase sequence check is completed, the buzzer-type flash alarm will turn off and stop the alarm.

[0041] When the test switch positioning is started, press the fixed operation button, the fixed operation contactor KM1 is attracted, and the switch starting power supply is connected. At this time, the switch will move to the positioning direction, and the starting ammeter will deflect to the 2A range. When the pointer returns to zero, it means that the switch positioning is moved into place.

[0042] After the switch positioning switch is moved into place, the switch indication circuit is connected. At this time, the switch indication lamp L1 lights up green, indicating that the switch positioning indication is good.

[0043] Reverse start and indication test are the same as above.

[0044] Specific working principle:

[0045] Press the fixed operation button to cut off the Y4.Y5 reverse meter power supply, the reverse meter light L2 goes out, after a delay of 2s, the fixed operation contactor is excited and attracted, the ABC three-phase power is connected, the motor rotates forward, the motor rotates forward to the position, the fixed operation contactor loses magnetism and falls, after a delay of 2s, the Y2.Y3 indication power supply is connected, and the fixed meter light L1 is on;

[0046] Press the reverse operation button to cut off the power supply of Y2.Y3 meter, and the meter light L1 goes out. After a delay of 2s, the reverse operation contactor is excited and attracted, and the ABC three-phase power is connected. The motor reverses, and the motor reverses to the end. The reverse operation contactor loses magnetism and falls. After a delay of 2s, the power supply of Y4.Y5 is connected, and the reverse meter light L2 lights up.

[0047] The above delays are all delay programs set in the PLC, which are prior art and will not be described in detail again.

[0048] In addition, the PLC program setting in this application can also automatically cut off the starting power supply if the switch is not in place within 30S; since the indication power supply is AC power supply, the indication inspection channel and the starting circuit channel are the same channel. In order to prevent the 380V power supply of the starting circuit from burning related equipment through the indication circuit, a 2S delay is set to physically isolate this possibility.

[0049] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A portable railway signal AC turnout intelligent control box, characterized in that: It includes a box body and a control circuit arranged inside the box body; The control circuit includes a programmable logic controller PLC, a fixed-operation contactor KM1, a reverse-operation contactor KM2, a switching power supply, a transformer and a three-phase power supply; The input terminal X0 of the programmable logic controller PLC is connected to the fixed operation button SB1, the input terminal X1 is connected to the reverse operation button SB2, and the input terminal X2 is connected to the emergency stop button SB0; The output terminal Y0 of the programmable logic controller PLC is connected to the coil of the fixed-operation contactor KM1, the output terminal Y1 is connected to the coil of the reverse-operation contactor KM2, the terminals Y2 and Y3 are respectively connected to the wiring W1 and W2 of the switch machine, and the two ends of the fixed meter lamp L1 are respectively connected to the wiring W2 and W4 of the switch machine; the terminals Y4 and Y5 are respectively connected to the wiring W1 and W3 of the switch machine, and the two ends of the reverse-operation lamp L2 are respectively connected to the wiring W3 and W5 of the switch machine; the normally closed contact of the fixed-operation contactor KM1 is connected between the terminal Y2 and the wiring W1, the normally closed contact of the fixed-operation contactor KM1 is connected between the terminal Y3 and the wiring W2, the normally closed contact of the reverse-operation contactor KM2 is connected between the terminal Y4 and the wiring W3, and the normally closed contact of the reverse-operation contactor KM2 is connected between the terminal Y5 and the wiring W1; One end of the three normally open contacts of the fixed-operation contactor KM1 are respectively connected to the A, B, and C phases of the three-phase power supply, and the other ends are respectively connected to the wiring W1, W2, and W5 of the switch machine; one end of the three normally open contacts of the reverse-operation contactor KM2 are respectively connected to the A, B, and C phases of the three-phase power supply, and the other ends are respectively connected to the wiring W1, W4, and W3 of the switch machine; the three-phase power supply provides power to the controllable logic controller PLC through the switching power supply and the transformer.

2. A portable railway signal AC turnout intelligent control box according to claim 1, characterized in that: The switching power supply is used to convert 380V three-phase electricity into 24V direct current. The input terminals L1 and L2 of the switching power supply are respectively connected to the A phase and C phase of the three-phase power supply. The output terminal -24V of the switching power supply is respectively connected to the input terminal -24V of the programmable logic controller PLC and two COM terminals connected to the fixed operation contactor KM1 and the reverse operation contactor KM2. The output terminal +24V of the switching power supply is connected to the input terminal +24V of the programmable logic controller PLC.

3. A portable railway signal AC turnout intelligent control box according to claim 1, characterized in that: The transformer is used to convert 380V three-phase electricity into 24V AC electricity. The input terminals L1 and L2 of the transformer are respectively connected to the A phase and C phase of the three-phase power supply, and the output terminals L and N of the transformer are connected to the output terminal COM of the programmable logic controller PLC.

4. A portable railway signal AC turnout intelligent control box according to claim 1, characterized in that: A current sensor is connected between the normally open contact of the fixed operating contactor KM connected to the A phase of the three-phase power supply and the wiring W1 of the switch machine, and the current collection end of the programmable logic controller PLC is connected to the collection output side of the current sensor.

5. A portable railway signal AC turnout intelligent control box according to claim 1, characterized in that: It also includes a phase failure protector, wherein terminals 1, 2, and 3 of the phase failure protector are respectively connected to phases A, B, and C of the three-phase power supply, terminal 5 of the phase failure protector is connected to the starting coils of the fixed-operation contactor KM1 and the reverse-operation contactor KM2, terminals 6 and 7 of the phase failure protector are connected to +24V and -24V power supplies, terminal 8 of the phase failure protector is connected to the -24V terminal of the buzzer-type flash alarm, and the +24V terminal of the buzzer-type flash alarm is connected to the +24V power supply.

6. A portable railway signal AC turnout intelligent control box according to claim 1, characterized in that: The box is equipped with a fixed operation button SB1, a reverse operation button SB2, an emergency stop button SB0, a fixed meter light L1, a reverse meter light L2, a buzzer flash alarm, a circuit breaker K1 and an ammeter. The ammeter is used to display the current collected by the current sensor.

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