Fault simulation device for rail transit signal equipment

Abstract

The utility model discloses a rail transit signal equipment fault simulation device which is used for fault simulation and test of a turnout switch machine in a railway signal system. Comprising a bracket, a mounting plate, a railway signal relay base, a relay group, a switch panel and a circuit breaker, the switch panel is integrated with a button switch, can control the on-off of a relay coil circuit to simulate turnout positioning and reverse operation, and simulates cable disconnection and turnout outage faults through a disconnection button or a circuit breaker. The device is additionally provided with a three-color state indicating lamp, the turnout state is displayed in real time through the contact of the positioning / anti-position relay and the state of the circuit breaker, and visual feedback is improved. According to the device, one-button fault injection is realized through cooperation of the switch panel and the relay base, operation is convenient and visual, misoperation is reduced through centralized control, the problems of frequent cable plugging and unplugging and unstable fault points in traditional fault simulation are solved, and test efficiency and accuracy are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit signal equipment practical training test equipment technical field especially relates to a rail transit signal equipment fault simulation device. BACKGROUND

[0002] In the railway signal system, the fault simulation of turnout control circuit and track circuit is the key link of signal equipment maintenance and practical training. And through the artificial frequent plug-in relay or manual disconnection of circuit cable to simulate the fault, it is easy to cause the relay contact wear, the cable connection reliability decreases, and the fault point is difficult to stable recurrence, the operation is complicated, the efficiency is low, cannot satisfy the flexible demand of fault recurrence of practical training system. CONTENT OF UTILITY MODEL

[0003] In view of the above problem, one purpose of the utility model is to provide a rail transit signal equipment fault simulation device to solve the technical problem of time-consuming and laborious, low efficiency when simulating the circuit fault of frequent plug-in relay or circuit cable in the existing fault generation.

[0004] In order to realize these purposes and other advantages of the utility model, the utility model provides a rail transit signal equipment fault simulation device, which is connected between rail transit signal equipment (such as switch machine or signal lamp etc.) and control integrated center, is used for switch machine operation simulation, turnout power failure and other faults, and includes:

[0005] The bracket is provided with a detachable mounting plate on the front face;

[0006] The railway signal relay base is installed on the mounting plate;

[0007] The railway relay group is vertically inserted into the corresponding jack of the railway signal relay base;

[0008] The switch panel is provided with a plurality of button switches, which are connected to the relay coil excitation circuit, the switch machine control circuit and the power supply loop respectively;

[0009] The circuit breaker is connected in series to the switch machine power supply loop;

[0010] Among them, the button switch is used for controlling the excitation and power-off of the relay coil, realizing the switch machine fixed / anti-position operation simulation, and simulating the turnout power failure by cutting off the power supply through the circuit breaker. The button switch also includes a circuit breaker fault button, which is connected in series in the switch machine control circuit, and is used for cutting off the circuit branch to simulate the cable circuit failure.

[0011] Preferably, in the rail transit signal equipment fault simulation device, the base is JWXC-1700 railway signal relay base, the relay is AX railway relay, and the circuit breaker is CBI circuit breaker (such as CBI-16A high breaking small circuit breaker).

[0012] Preferably, the railway relay group comprises: a positioning relay and a reverse positioning relay; the normally closed contact of the positioning relay and the normally closed contact of the reverse positioning relay are connected in series in the coil loop of the other relay to achieve interlocking. When the positioning relay is attracted, the normally closed contact of the positioning relay breaks the coil loop of the reverse positioning relay, ensuring that the two relays cannot act simultaneously.

[0013] Preferably, the track traffic signal equipment fault simulation device further comprises a state indicating lamp, which is installed in the display control area of the support, and is connected in parallel with the auxiliary contact of the circuit breaker through the normally open / normally closed contact of the relay contact circuit, for real-time display of the positioning state, reverse positioning state and power-off state of the turnout.

[0014] Preferably, the state indicating lamp in the track traffic signal equipment fault simulation device comprises three-color LED indicating lamps, which are respectively set as green, yellow and red;

[0015] The green LED is connected to the power supply circuit through the normally open contact of the positioning indicating relay. When the coil of the positioning indicating relay is powered, the normally open contact is closed, and the green LED is lit to simulate the turnout positioning indication.

[0016] The yellow LED is connected to the power supply circuit through the normally open contact of the reverse positioning indicating relay. When the coil of the reverse positioning indicating relay is powered, the normally open contact is closed, and the yellow LED is lit to simulate the turnout reverse positioning indication.

[0017] The red LED is connected to the power supply circuit in series through the normally closed contact of the positioning indicating relay and the reverse positioning indicating relay. When the coils of the positioning indicating relay and the reverse positioning indicating relay are not excited, the normally closed contact is closed, and the red LED is lit through the series circuit to simulate the turnout fault or power-off state.

[0018] Preferably, the track traffic signal equipment fault simulation device comprises a mounting plate, a plurality of supports and a plurality of relays, wherein the mounting plate is provided with a plurality of front-to-back through mounting holes, and each mounting hole is provided with an insertion part corresponding to the position of the mounting hole, and the insertion part is provided with a slot matched with the shape of the base of the railway signal relay; the base is detachably connected with the mounting plate through the slot, and when the base is inserted into the slot, the back surface of the base is opened towards the back surface of the mounting plate to expose the terminal, and the front surface of the base is opened towards the front surface of the insertion part to expose the relay insertion position.

[0019] Preferably, the inner wall of the slot is provided with a guide protrusion, the two sides of the base are provided with a clamping groove in sliding cooperation with the guide protrusion, and the top of the slot is provided with an elastic protrusion. When the base is inserted, it is deformed under pressure, and after being in place, it is locked by springing into the recess or the top of the base.

[0020] Preferably, the rail transit signal equipment fault simulation device, the side of the mounting plate is provided with an arc-shaped hanging hole, and the top of the arc-shaped hanging hole is an inner concave circular arc surface, which forms a self-positioning cooperation with an outer convex arc surface of a locking pin on a vertical beam of the side of the support;

[0021] The locking pin is screwed into the through hole of the vertical beam and is fixed through thread engagement, the end of the locking pin is provided with a threaded knob, the inner side of the threaded knob is provided with a nylon non-slip gasket, and the side wall of the mounting plate is pressed by the gasket when the knob is rotated, so that quick locking or releasing is realized.

[0022] The bottom of the arc-shaped hanging hole is provided with a guide inclined surface, which cooperates with a chamfered conical surface at the bottom of the locking pin to guide the mounting plate to be accurately clamped into the mounting position of the support in the vertical direction.

[0023] Preferably, the rail transit signal equipment fault simulation device, the back of the support is provided with a wire slot part, the wire slot part includes a plurality of independent wire slots arranged side by side, and the cross section of each wire slot is U-shaped and the slot width is adapted to conductors with different diameters.

[0024] The opening end of the wire slot part is provided with a detachable cover body, and the cover body is slidably connected with the side wall of the wire slot through a slide rail structure.

[0025] The rail transit signal equipment fault simulation device has at least the following beneficial effects:

[0026] The device is connected in the circuit between the rail transit signal equipment (such as a switch machine, a signal lamp and the like) and a control integrated center, and the "one-key" fault injection is realized through the cooperation of the switch panel and the relay base, so that the operation is convenient and intuitive, and the hardware damage and low efficiency caused by the traditional frequent terminal or relay or circuit cable pulling-out are reduced.

[0027] The base, the relay group and the like can be connected into each circuit branch, and a plurality of fault types can be simulated.

[0028] The switch panel and the relay base and the like are arranged on the support, so that the practical training teaching display has high visibility, and the disassembly and assembly are convenient.

[0029] Other advantages, objects and features of the rail transit signal equipment fault simulation device will be embodied in part through the following description, and will be understood by those skilled in the art through research and practice of the rail transit signal equipment fault simulation device. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a front structure schematic view of the rail transit signal equipment fault simulation device of the utility model;

[0031] Figure 2 It is a side structure schematic view of the rail transit signal equipment fault simulation device of the utility model;

[0032] Figure 3This is a front view of the mounting plate of this utility model.

[0033] Figure 4 This is a schematic diagram of the structure of the mounting part and the base of this utility model.

[0034] Figure 5 This is a schematic diagram of the locking pin of this utility model;

[0035] Figure 6 This is a schematic diagram of the structure of the groove portion of this utility model;

[0036] Figure 7 This is a schematic diagram of the connection frame structure between the fault simulation device for rail transit signaling equipment of this utility model and the switch machine and control integration center.

[0037] Figure 8 This is a circuit diagram of the fault simulation device for rail transit signaling equipment of this utility model;

[0038] Figure 9 This is a relay control circuit diagram of the fault simulation device for rail transit signaling equipment of this utility model;

[0039] Figure 10 This is a circuit diagram of the status indicator light of the fault simulation device for rail transit signaling equipment of this utility model.

[0040] The components include: bracket 10; support leg 101; mounting plate 102; mounting hole 103; insertion part 104; slot 105; rib 106; elastic protrusion 107; hanging hole 108; arc surface 109; guide slope 110; locking pin 111; threaded structure 112; front end of locking pin 113; nylon gasket 114; threaded knob 115; chamfered conical surface 116; railway signal relay base 20; groove 201; railway relay group 30; switch panel 40; push button switch 401; wire trough part 50; wire trough 501; cover plate 502; status indicator light 60; and circuit breaker 70. Detailed Implementation

[0041] The present invention will be further described in detail below with reference to the embodiments, so that those skilled in the art can implement it based on the description.

[0042] As shown in Figures 1-10, this embodiment provides a fault simulation device for rail transit signaling equipment, which is connected between the switch machine and the control integration center. It includes a bracket 10, a mounting plate 102, a railway signal relay base 20, a railway relay group 30, a switch panel 40, and a circuit breaker 70.

[0043] The bracket 10 is provided with a detachable mounting plate 102 on the front side, and a support leg 101 is arranged at the bottom of the bracket 10. The railway signal relay base 20 is fixed on the mounting plate 102, and the pins of the railway relay group 30 are vertically inserted into the base socket to ensure reliable electrical contact. The plurality of button switches 401 of the switch panel 40 are respectively connected to the relay coil excitation circuit, the switch machine control circuit and the power supply circuit. By operating the button switch 401, the relay coil on-off can be controlled, and the simulation switch machine positive / negative position conversion action is simulated. When the circuit branch is disconnected by pressing the circuit breaker fault button switch 401, the simulation cable circuit breaker fault is simulated.

[0044] The circuit breaker 70 is connected in series in the switch machine power supply circuit, and the switch machine power supply circuit is simulated by manually disconnecting the circuit breaker 70.

[0045] The embodiment realizes the rapid replacement of the relay by combining the modular mounting plate 102 with the standardized railway signal relay base 20. The switch panel 40 concentrates the excitation control, switch machine switching and power supply shutdown functions through the button switch 401, which facilitates the rapid switching and visual operation of multiple types of faults, reduces the misoperation rate, realizes the "one-key" fault injection through the cooperation of the switch panel and the relay base, and is convenient and intuitive to operate. The technical problems of time-consuming and laborious, unstable fault points and low efficiency in the existing fault generation are solved.

[0046] In another embodiment, the track traffic signal equipment fault simulation device is connected between the switch machine and the control integrated center.

[0047] In another embodiment, the railway signal relay base 20 adopts the JWXC-1700 standard base, and the socket layout is fully matched with the AX series relay pins to ensure stable contact after the relay is inserted. The AX relay has high reliability, and the contact capacity is adapted to the load requirements of the railway signal circuit. The circuit breaker 70 is selected from the CBI series, such as CBI-16A, and the breaking capacity meets the protection requirements of the switch machine power supply circuit.

[0048] In another embodiment, the device is additionally provided with a state indicator light 60 installed in the display control area at the top of the support 10. The state indicator light 60 is connected in parallel with the auxiliary contact of the circuit breaker 70 through the normally open / normally closed contact of the relay contact circuit. When the DBJ coil of the positioning indicating relay is energized, its normally open contact is closed, lighting the positioning indicator light. When the FBJ coil of the reverse indicating relay is energized, its normally open contact is closed, lighting the reverse indicator light. If the circuit breaker 70 is open or both relays are de-energized, the breaking contact of the circuit breaker 70 simultaneously cuts off the main power supply and control power supply circuit of the switch machine, ensuring that the relay coil is de-energized, and the red indicator light is lit through the normally closed contact. This embodiment solves the problem of human observation of relay action errors in real time, improving the visualization and accuracy of fault simulation.

[0049] In another embodiment, the state indicator light 60 is a three-color LED, which is a green LED (L1), a yellow LED (L2), and a red LED (L3). The green LED is connected to the power supply through the normally open contact DBJ-1 of the positioning relay DBJ, and is lit when the DBJ is energized, indicating the positioning of the turnout. The yellow LED is connected through the normally open contact FBJ-1 of the FBJ, and is lit when the FBJ is energized, indicating the reverse position of the turnout. The red LED is connected in series through the normally closed contacts DBJ-2 and FBJ-2 of the DBJ and FBJ, and when both relays are de-energized and not energized, the series circuit is turned on, and the red LED is lit, indicating power failure or fault. This design solves the problem that the traditional single-color indicator light cannot distinguish between complex states, and directly reflects the turnout action and fault type through color coding, and the parallel normally closed contact design ensures that the red light immediately alarms when any relay is abnormally de-energized. Preferably, the green LED (L1), the yellow LED (L2), and the red LED (L3) can be connected in series with a protection resistor R (such as a 1kΩ resistor).

[0050] In another embodiment, the mounting plate 102 is provided with matrix mounting holes 103, each mounting hole 103 is provided with an insertion part 104, the insertion part 104 has a slot 105, the shape of the slot 105 matches the edge profile of the JWXC-1700 base. During installation, the base is pushed into the slot 105, and the back wiring terminal is exposed from the back of the mounting plate 102, which is convenient for wiring connection; the front relay insertion position is completely exposed, which is convenient for the insertion and removal of the relay. This structure solves the problem of low replacement efficiency caused by traditional welding or screw fixing, and realizes quick installation and maintenance of the base.

[0051] In another embodiment, as shown in FIG. 4, the inner wall of the slot 105 is provided with two guide ribs 106, which are metal or plastic ribs, and the base is provided with grooves 201 on both sides. During installation, the guide ribs 106 are in sliding fit with the grooves 201, ensuring the accurate insertion direction of the base; the top of the slot 105 is provided with an elastic lug 107 composed of spring steel sheets, which is deformed under pressure when the base is inserted, and snaps into the recess or the top of the base to achieve locking after being in place. This design solves the problem of alignment difficulty, and improves the installation precision and stability through the guide and self-locking structure.

[0052] In another embodiment, the mounting plate 102 is provided with a hanging hole 108, and the vertical beam of the support 10 is provided with a locking pin 111, which has a threaded structure 112 on the surface and a through hole on the front end 113, which is threadedly fixed with the vertical beam of the support 10. The inner concave arc surface 109 at the top of the hanging hole 108 is in contact with the outer convex arc surface of the locking pin 111, achieving self-positioning; when the threaded knob 115 at the end of the locking pin 111 is tightened, the nylon gasket 114 is pressed against the side wall of the mounting plate 102 to fix it. The guide inclined surface 110 at the bottom of the hanging hole 108 cooperates with the chamfered surface 116 of the locking pin 111 to guide the vertical falling of the mounting plate 102 to the installation position. This structure enables the mounting plate 102 to be automatically centered and positioned by its own weight, solving the time-consuming problem of traditional bolt adjustment and fixation. Only the bolt needs to be loosened and tightened, without the need to unscrew the bolt, to achieve quick disassembly and precise positioning of the mounting plate 102.

[0053] In another embodiment, the back of the support 10 is provided with a wire slot part 50, which has a plurality of independent wire slots 501, each of which has a U-shaped cross section and accommodates power lines, control lines and signal lines, respectively. Preferably, the inner wall of the slot is covered with a fire-retardant PVC gasket. The wire slot 501 is provided with a cover plate 502 at the opening end, which is opened and closed by sliding rails on both sides. This design solves the problem of difficult maintenance caused by messy wiring, and improves the efficiency and safety of cable management through classified wiring and detachable cover plate 502.

[0054] As shown in Figure 8 , Figure 9 and Figure 10 , the implementation process of the device is as follows:

[0055] I. Circuit connection

[0056] 1. Power circuit

[0057] As shown in Figure 8 , the external power source (AC power supply AC 220V) is connected to the support power terminal, which is divided into two paths:

[0058] Main power circuit: output to the switch machine analog load through the circuit breaker;

[0059] Control power circuit: Converted to DC 24V via AC / DC step-down module (input AC220V, output DC24V / 1A) to power relay coils and indicator lights.

[0060] 2. For example Figure 9 and 10 As shown, the relay control circuit

[0061] Positioning relay circuit: Push button switch S1 → DBJ coil → DC 24V negative terminal. When S1 is pressed, DBJ is energized, its normally open contact closes, and the green LED (L1) lights up.

[0062] Reverse relay circuit: Push button switch S2 → FBJ coil → DC 24V negative terminal. When S2 is pressed, FBJ is engaged and the yellow LED (L2) lights up.

[0063] Interlocking logic: The normally closed contacts of DBJ and FBJ are connected in series in the coil circuit of the other to ensure that the two relays do not engage at the same time.

[0064] 3. Fault simulation circuit

[0065] Open circuit fault: Push button switch S3 is connected in series in the switch machine control circuit. Pressing S3 will cut off the branch current.

[0066] Power outage fault: Manually disconnect the circuit breaker to cut off the main power supply of the switch machine. The red LED (L3) will light up through the normally closed contacts of DBJ / FBJ. The red LED (L3) will only conduct when both DBJ and FBJ are de-energized to avoid false alarms due to single relay faults.

[0067] II. Simulation Operation Procedures for Actions and Faults

[0068] 1. Switch operation simulation

[0069] Positioning operation: Press button switch S1 → DBJ engages → Green LED lights up → Switch machine simulates positioning operation;

[0070] Reverse position operation: Press button switch S2 → FBJ engages → Yellow LED lights up → Switch machine simulates reverse position operation.

[0071] 2. Fault Simulation

[0072] Branch circuit break: Pressing button switch S3 → the switch machine control circuit is interrupted, simulating a cable break;

[0073] Switch power failure: Manually disconnect the circuit breaker → the main power supply to the switch machine is cut off, and the red LED lights up.

[0074] 3. Status Feedback and Reset

[0075] Real-time display of turnout state (green / yellow / red corresponds to positioning / anti-position / power-off) by three-color LED;

[0076] After troubleshooting, reset the button switch S3 or close the circuit breaker, and the device returns to the initial state.

[0077] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized.

Claims

1. A rail transit signal equipment failure simulation device, characterized in that, The device comprises: a bracket, the front of which is provided with a detachable mounting plate; a railway signal relay base mounted on the mounting plate; a railway relay group, the pins of which are vertically inserted into corresponding insertion holes of the railway signal relay base; a switch panel provided with a plurality of button switches, which are respectively connected to a relay coil excitation circuit, a switch machine control circuit and a power supply circuit; a circuit breaker connected in series to the switch machine power supply circuit; wherein the plurality of button switches are respectively used to control the excitation and de-excitation of the relay coil, to realize switch machine normal / reverse position operation simulation, to cut off the control circuit to simulate a circuit breaking fault, and to cut off the power supply through the circuit breaker to simulate a switch failure fault.

2. The rail transit signal equipment failure simulation device of claim 1, wherein, The base is a JWXC-1700 railway signal relay base, the relay is an AX railway relay, and the circuit breaker is a CBI circuit breaker.

3. The rail transit signal equipment failure simulation device according to claim 1 or 2, characterized in that, The device further comprises a state indicating lamp, which is installed in the display and control area of the bracket, is connected in parallel with the auxiliary contact of the circuit breaker and the normally open / closed contact of the relay contact circuit through the power supply circuit, and is used to display the normal position state, reverse position state and power-off state of the switch in real time.

4. The rail transit signal equipment failure simulation device of claim 3, wherein, The state indicating lamp comprises three color LED indicating lamps, which are respectively set as green, yellow and red; the green LED is connected to the power supply circuit through the normally open contact of the normal position indicating relay, and when the normal position indicating relay coil is powered on, the normally open contact is closed, and the green LED is lit to simulate the normal position indication of the switch; the yellow LED is connected to the power supply circuit through the normally open contact of the reverse position indicating relay, and when the reverse position indicating relay coil is powered on, the normally open contact is closed, and the yellow LED is lit to simulate the reverse position indication of the switch; the red LED is connected to the power supply circuit through the normally closed contact of the normal position indicating relay and the reverse position indicating relay, and when neither the normal position indicating relay nor the reverse position indicating relay is excited, the normally closed contact is closed, and the red LED is lit through the series circuit to simulate the switch failure or power-off state.

5. The rail transit signal equipment failure simulation device of claim 1, wherein, A plurality of front-to-back through mounting holes are uniformly provided on the mounting plate, each mounting hole is provided with an insertion part at a corresponding position, the insertion part has a slot matched with the shape of the railway signal relay base; the base is detachably connected with the mounting plate through the slot, when the base is inserted into the slot, the back surface thereof is opened towards the back surface of the mounting plate to expose the terminal, and the front surface thereof is opened towards the front surface of the insertion part to expose the relay insertion position.

6. The rail transit signal equipment failure simulation device of claim 5, wherein, The inner wall of the slot is provided with a guide protruding rib, the two sides of the base are provided with clamping grooves in sliding cooperation with the guide protruding rib, and the top of the slot is provided with an elastic protruding block, which is deformed under pressure when the base is inserted, and is locked in the recess or the top of the base after returning to the original position.

7. The rail transit signal equipment failure simulation device of claim 1, wherein, The side of the mounting plate is provided with an arc-shaped hanging hole, the top of the arc-shaped hanging hole is an inner concave arc surface, which forms a self-positioning cooperation with the outer convex arc surface of the locking pin on the vertical beam of the side of the bracket; the locking pin is screwed into the through hole of the vertical beam to be threadedly engaged and fixed, the end of the locking pin is provided with a threaded knob, the inner side of the threaded knob is provided with a nylon non-slip pad, and the side wall of the mounting plate is pressed tightly through the pad when the knob is rotated to realize quick locking or releasing; the bottom of the arc-shaped hanging hole is provided with a guide inclined surface, which cooperates with the chamfered conical surface at the bottom of the locking pin to guide the clamping of the mounting plate into the mounting position of the bracket.

8. The rail transit signal equipment failure simulation device of claim 1, wherein, The back of the support is provided with a wire slot part, which comprises a plurality of independent wire slots arranged side by side, the cross section of each wire slot is U-shaped, and the slot width is adapted to the conductors with different diameters; The opening end of the wire slot part is provided with a detachable cover, and the cover is slidably connected with the side wall of the wire slot through a slide rail structure.

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