Subway train pantograph practical training platform

Abstract

The utility model provides a subway train pantograph practical training platform, include: gas path unit, main control circuit, bow -up control circuit, bow -down control circuit and power supply, main control circuit with bow -up control circuit, bow -down control circuit connection, bow -up control circuit, bow -down control circuit passes through gas path unit and is connected with pantograph, power supply with main control circuit, bow control circuit, bow -down control circuit connection to provide working power supply, the utility model discloses through setting gas path unit, main control circuit, bow -up control circuit, bow -down control circuit can realize the bow function control of pantograph, simple operation, control stable, safe and reliable, has greatly promoted the practical training effect of subway vehicle maintenance personnel, improves the maintenance skill level, ensures the subway operation quality and safety.

Description

Technical Field

[0001] This utility model belongs to the field of pantograph maintenance technology, specifically relating to a pantograph training platform for subway trains. Background Technology

[0002] The pantograph of a subway train mainly consists of a base frame, lower arm, upper arm, lower guide rod, pantograph head, upper guide rod, control box, insulators, and pantograph positioning sensor. Its main characteristics include: light weight, simple structure, low maintenance, and high operational safety. The pantograph is a hinged mechanical component whose raising and lowering actions are controlled by an air circuit. The pantograph collects current from the contact wire and transmits it to the vehicle's electrical system. This pantograph is mounted on the roof via support insulators and contacts the power grid line through a carbon sliding plate on the pantograph head. In the "working" position, the portion of the pantograph on the roof is energized, with electrical insulation only at the mechanical and air circuit interfaces to the roof.

[0003] The lack of a dedicated training platform for pantograph maintenance on subway trains leads to inconvenience for maintenance personnel, hindering their skill development and severely impacting their training effectiveness and work efficiency. Furthermore, it increases the likelihood of pantograph maintenance quality issues, posing safety risks during subway train operation. Utility Model Content

[0004] To overcome the above-mentioned technical defects, this utility model provides a training platform for pantographs on subway trains, which can improve the work efficiency of subway vehicle maintenance personnel.

[0005] This utility model is implemented according to the following technical solution:

[0006] A training platform for pantographs on subway trains includes: a pneumatic circuit unit, a main control circuit, a pantograph raising control circuit, a pantograph lowering control circuit, and a power supply;

[0007] The main control circuit is connected to the raising control circuit and the lowering control circuit;

[0008] The pantograph raising control circuit and the pantograph lowering control circuit are connected to the pantograph via the pneumatic circuit unit;

[0009] The power supply is connected to the main control circuit, the bow control circuit, and the bow lowering control circuit to provide operating power.

[0010] As a further improvement of this utility model, this utility model also includes: an emergency stop button, and the main control circuit is connected to the raising control circuit and the lowering control circuit through the emergency stop button.

[0011] As a further improvement of this utility model, the main control circuit includes: a main control knob and a main control relay;

[0012] The positive terminal of the power supply is connected to the negative terminal of the power supply through the main control knob and the coil of the main control relay.

[0013] As a further improvement of this utility model, the bow raising control circuit includes: a bow raising button and a bow raising relay;

[0014] The positive terminal of the power supply is connected to the negative terminal of the power supply in sequence through the emergency stop button, the normally open contact of the main control relay, the pantograph raising button, and the coil of the pantograph raising relay;

[0015] The positive terminal of the power supply is connected to the pneumatic circuit unit through the normally open contact of the lifting relay.

[0016] As a further improvement of this utility model, the pantograph lowering control circuit includes: a pantograph lowering button and a pantograph lowering relay;

[0017] The positive terminal of the power supply is connected to the negative terminal of the power supply in sequence through the emergency stop button, the normally open contact of the main control relay, the pantograph lowering button, and the coil of the pantograph lowering relay.

[0018] The emergency stop button is connected to the coil of the raising relay via the normally open contact of the raising relay and the normally closed contact of the lowering relay;

[0019] The emergency stop button is connected to the coil of the lowering relay via the normally open contact of the lowering relay and the normally closed contact of the raising relay.

[0020] As a further improvement of this utility model, the air circuit unit includes: an air supply module, a first shut-off valve, a one-way throttle valve, a lifting solenoid valve, and a second shut-off valve connected in sequence.

[0021] The lifting solenoid valve is connected to the normally open contact of the lifting relay;

[0022] The cut-off plug is connected to the pantograph.

[0023] As a further improvement of this utility model, this utility model also includes: a workstation selection switch and a workstation selection relay;

[0024] The positive terminal of the power supply is connected to the negative terminal of the power supply through the coil of the workstation selection switch and the workstation selection relay;

[0025] The normally open contact of the lifting relay is connected to the pneumatic circuit unit through the normally open contact of the workstation selection relay.

[0026] As a further improvement of this utility model, this utility model also includes: a bow lifting pressure relay, a bow lowering position relay, a bow lifting indicator light, a bow lowering indicator light, and an authorization indicator light;

[0027] The positive terminal of the power supply is connected to the negative terminal of the power supply through the pantograph lifting pressure sensor and the coil of the pantograph lifting pressure relay;

[0028] The positive terminal of the power supply is connected to the negative terminal of the power supply through the pantograph lowering position sensor and the coil of the pantograph lowering position relay;

[0029] The positive terminal of the power supply is connected to the negative terminal of the power supply through the normally open contact of the lifting relay and the lifting indicator light.

[0030] The positive terminal of the power supply is connected to the negative terminal of the power supply through the normally closed contact of the raising relay and the lowering indicator light.

[0031] As a further improvement of this utility model, this utility model also includes: a data acquisition unit and a display unit;

[0032] The data acquisition unit is connected to the main control knob, the normally open contact of the bow lifting pressure relay, the normally open contact of the workstation selection relay, the bow lifting button, the emergency stop button, the normally open contact of the bow lowering position relay, the normally open contact of the main control relay, and the display unit.

[0033] As a further improvement of this utility model, the air supply module includes: a start switch, a contactor, and an air compressor;

[0034] The live wire of the power supply is connected to the neutral wire of the power supply through the start switch and the coil of the contactor;

[0035] The live wire and the neutral wire of the power supply are connected to the air compressor through the normally open contact of the contactor.

[0036] Compared with the prior art, this utility model has the following beneficial effects: by setting up a pneumatic circuit unit, a main control circuit, a pantograph raising control circuit, and a pantograph lowering control circuit, it can realize the pantograph raising and lowering function control, which is simple to operate, stable in control, safe and reliable, greatly improving the training effect of subway vehicle maintenance personnel, improving the maintenance skill level, and ensuring the quality and safety of subway operation. Attached Figure Description

[0037] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0038] Figure 1 This is a schematic diagram of the structure of the subway train pantograph training platform described in this utility model;

[0039] Figure 2 This is a schematic diagram of the main control circuit, the raising control circuit, and the lowering control circuit described in this utility model;

[0040] Figure 3 This is a schematic diagram of the structure of the gas path unit described in this utility model;

[0041] Figure 4 The present invention relates to the lifting pressure relay and the lowering positioning relay.

[0042] Figure 5 This is a connection diagram of the bow raising indicator, bow lowering indicator, and authorization indicator described in this utility model;

[0043] Figure 6 This is a connection diagram of the acquisition unit described in this utility model;

[0044] Figure 7 This is a schematic diagram of the air supply module described in this utility model.

[0045] Explanation of reference numerals in the attached diagram: 1. Pneumatic circuit unit; 2. Main control circuit; 3. Pantograph raising control circuit; 4. Pantograph lowering control circuit; 5. Data acquisition unit; 6. Display unit; 100. Pantograph; 1001. Pantograph raising pressure relay; 1002. Pantograph lowering position relay; Detailed Implementation

[0046] 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.

[0047] This utility model provides a training platform for pantographs on subway trains, such as... Figure 1 As shown, it includes: a pneumatic circuit unit 1, a main control circuit 2, a pantograph raising control circuit 3, a pantograph lowering control circuit 4, and a power supply; the main control circuit 1 is connected to the pantograph raising control circuit 3 and the pantograph lowering control circuit 4; the pantograph raising control circuit 3 and the pantograph lowering control circuit 4 are connected to the pantograph 100 through the pneumatic circuit unit 1; the power supply is connected to the main control circuit 2, the pantograph raising control circuit 3, and the pantograph lowering control circuit 4 to provide working power.

[0048] This utility model also includes: an emergency stop button ES, and the main control circuit 1 is connected to the raising control circuit 3 and the lowering control circuit 4 through the emergency stop button ES.

[0049] As shown in Figure 2, the main control circuit 2 includes: a main control knob S01 and a main control relay MCR; the positive terminal 110V+ of the power supply is connected to the negative terminal 110V- of the power supply through the coils of the main control knob S01 and the main control relay MCR.

[0050] like Figure 2As shown, the bow raising control circuit 3 includes: a bow raising button S02 and a bow raising relay PANUR; the positive terminal 110V+ of the power supply is connected to the negative terminal 110V- of the power supply sequentially through the emergency stop button ES, the normally open contact of the main control relay MCR, the bow raising button S02, and the coil of the bow raising relay PANUR; the positive terminal 110V+ of the power supply is connected to the air circuit unit 1 through the normally open contact of the bow raising relay PANUR. Before being connected to the circuit, the positive terminal 110V+ of the power supply is also connected to a switch QF4.

[0051] like Figure 2 As shown, the pantograph lowering control circuit 4 includes: a pantograph lowering button S03 and a pantograph lowering relay PANDR; the positive terminal of the power supply is connected to the negative terminal of the power supply sequentially through the emergency stop button ES, the normally open contact of the main control relay MCR, the pantograph lowering button S03, and the coil of the pantograph lowering relay PANDR. The emergency stop button ES is connected to the coil of the raising relay PANUR through the normally open contact of the raising relay PANUR and the normally closed contact of the lowering relay PANDR. The emergency stop button ES is connected to the coil of the lowering relay PANDR through the normally open contact of the lowering relay PANDR and the normally closed contact of the raising relay PANUR.

[0052] like Figure 3 As shown, the air circuit unit 1 includes: an air supply module A01, a first shut-off valve A02, a one-way throttle valve A03, a pantograph lifting solenoid valve A04, and a second shut-off valve A05 connected in sequence; the pantograph lifting solenoid valve A04 is connected to the normally open contact of the pantograph lifting relay PANUR; the second shut-off valve A02 is connected to the pantograph 100.

[0053] This utility model also includes: a workstation selection switch K1 and a workstation selection relay QR; the positive terminal 110V+ of the power supply is connected to the negative terminal 110V- of the power supply through the coils of the workstation selection switch K1 and the workstation selection relay QR; the normally open contact of the lifting relay PANUR is connected to the pneumatic circuit unit 1 through the normally open contact of the workstation selection relay QR.

[0054] The pantograph training platform allows multiple workstations to be connected to a single pantograph via workstation selection switch K1 and workstation selection relay QR. However, for safety reasons, only one workstation can be authorized at a time. Authorized workstations can control the pantograph's raising and lowering independently, while other workstations cannot control it. When a workstation is in use, it can be used normally when powered on via workstation selection switch K1 and workstation selection relay QR. For teaching purposes, while authorized workstations are conducting electrical fault diagnosis training, other workstations can also conduct partial electrical fault diagnosis training, but they cannot control the pantograph.

[0055] like Figure 4 and Figure 5As shown, this utility model also includes: a pantograph raising pressure relay 1001, a pantograph lowering position relay 1002, a pantograph raising indicator X1, a pantograph lowering indicator X2, and an authorization indicator X3; the positive terminal 110V+ of the power supply is connected to the negative terminal 110V- of the power supply through the coils of the pantograph raising pressure sensor 1001 and the pantograph raising pressure relay SR; the positive terminal 110V+ of the power supply is connected to the negative terminal of the power supply through the coils of the pantograph lowering position sensor 1002 and the pantograph lowering position relay JR; the positive terminal 110V+ of the power supply is connected to the negative terminal 110V- of the power supply through the normally open contact of the pantograph raising relay PANUR and the pantograph raising indicator X1; the positive terminal 110V+ of the power supply is connected to the negative terminal 110V- of the power supply through the normally closed contact of the pantograph raising relay PANUR and the pantograph lowering indicator X2, wherein the pantograph raising indicator X1 is a green indicator light and the pantograph lowering indicator X2 is a red indicator light. A switch QF2-7 is also connected before the positive terminal 110V+ of the power supply is connected to the circuit.

[0056] like Figure 6 As shown, this utility model also includes: a data acquisition unit 4 and a display unit 5; the data acquisition unit 4 is connected to the main control knob S01, the normally open contact of the lifting pressure relay SR, the normally open contact of the work position selection relay QR, the lifting button S02, the emergency stop button ES, the normally open contact of the lowering position relay JR, the normally open contact of the main control relay MCR, and the display unit 5. The data acquisition unit 4 communicates with the display unit through a TTL serial port.

[0057] like Figure 7 As shown, the air supply module A01 includes: a start switch SA, a contactor KM1, and an air compressor M; the live wire L of the power supply is connected to the neutral wire N of the power supply through the start switch SA and the coil of the contactor KM1; the live wire L and the neutral wire N of the power supply are connected to the air compressor M through the normally open contact of the contactor KM1. When the start switch SA is pressed, the coil of the contactor KM1 is energized, the normally open contact closes, and the air compressor M is energized and starts.

[0058] Air compressor M features a silent design and a 30L air cylinder capacity, meeting the normal air supply requirements of the pantograph. The pantograph lifting solenoid valve A04 is powered by DC24V and is used to control the opening and closing of the air circuit between the air compressor air cylinder and the pantograph air pressure lifting device, as well as the exhaust. The pantograph lifting solenoid valve A04 is controlled by the pantograph lifting relay PANUR.

[0059] All components are housed in a control cabinet, constructed from 2mm thick metal sheet through stamping and welding. It features four casters (with brakes), one quick-connect external air hose, and one quick-connect sensor signal connector. The control cabinet measures 80mm × 50mm × 80mm. The display screen is located on the upper left side of the cabinet, while the push-button switches are on the upper right. The electrical circuits and pneumatic units are located inside the cabinet. The front panel of the control cabinet is openable, and the lower cabinet door is equipped with a lock.

[0060] In the various electrical branches of the subway train pantograph training platform, multiple fault simulation points are set up, mainly including: ① main control cannot be activated, ② control circuit behind the emergency stop button is disconnected, ③ unable to raise the pantograph, ④ unable to maintain the raised pantograph position, ⑤ unable to lower the pantograph, ⑥ authorization light not lit after authorization, ⑦ pantograph raising button light not lit, ⑧ pantograph raising solenoid valve not energized. These fault simulation points are implemented through switches to achieve the purpose of rapid fault setting and recovery. During teaching, these switches are used to simulate faults for instruction.

[0061] The present invention will be further explained in conjunction with specific usage processes, as follows:

[0062] During practical training, the pantograph training platform is connected to the pantograph via a quick connector. The pantograph raising and lowering function is controlled by relays, solenoid valves, etc. The operation is simple, the control is stable, safe and reliable, which greatly improves the training effect of subway vehicle maintenance personnel, enhances their maintenance skills, and ensures the quality and safety of subway operation.

[0063] (1) Pantograph Lifting Control: Operate the main control knob S01 to close the main control circuit, energize the coil of the main control relay MCR and close the normally open contact. Press the pantograph lifting button S02 to close the pantograph lifting control circuit, energize the pantograph lifting relay PANUR, close the normally open contact of the pantograph lifting relay PANUR, energize the pantograph lifting solenoid valve, control the air path to the pantograph to open, inflate the pantograph airbag lifting device, and push the pantograph to rise.

[0064] (2) Lowering control: In the raised state, press the lowering button S03 to close the lowering control circuit, energize the coil of the lowering relay PANDR, open the normally closed contact of the lowering relay PANDR in the raised circuit, de-energize the raised relay PANUR, open the normally open contact of the raised relay PANUR, de-energize the raised solenoid valve, disconnect the air path to the pantograph, exhaust the airbag raising device of the pantograph, and lower the pantograph by its own weight.

[0065] 2. The subway train pantograph training platform meets the following operational functions:

[0066] (1) Turn on the main control knob S01 → the main control relay MCR is energized → the pantograph training platform is activated;

[0067] (2) Press the pantograph raising button S02 → the pantograph raising relay PANUR is energized → the pantograph raising indicator X1 lights up → the pantograph is raised normally (pantograph raising control circuit);

[0068] (3) In the raised bow state, turn off the main control knob S01 and maintain the raised bow state;

[0069] (4) Press the emergency stop button ES while the pantograph is raised → the pantograph lowering relay PANDR and the pantograph raising relay PANUR are de-energized → the pantograph raising indicator X1 goes out and the pantograph lowering indicator X2 lights up → the pantograph is lowered.

[0070] (5) When the pantograph is in the raised state, press the lowering button S03 → the lowering relay is energized, the raising relay PANUR is de-energized, the green raising indicator light goes out, and the red lowering indicator light comes on → the pantograph is lowered;

[0071] (6) Turn off the main control knob S01 and press the lowering button S03. The raising and lowering function of the bow will be invalid.

[0072] In summary, this utility model has the following technical effects:

[0073] 1. Improve the effectiveness of skills training. This pantograph training platform can safely simulate typical faults such as the inability to raise or lower the pantograph and the inability to maintain the raised pantograph position. It effectively solves the equipment damage risks and personnel safety hazards associated with traditional training methods that rely on actual vehicle operation. This facilitates pantograph maintenance training for subway maintenance personnel, improving their maintenance skills. The fault setup time has been reduced from 15 minutes to 8 seconds, the single training cycle has been shortened by 55%, and the training batch capacity has increased by 300%.

[0074] 2. Practical for on-site maintenance. The subway train pantograph training platform is designed entirely based on the needs of subway vehicle maintenance sites, making it highly practical and easy to operate. Compared to traditional training equipment, it saves 42% on energy, reduces maintenance costs by 68%, and extends equipment lifespan to 10 years.

[0075] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A training platform for pantographs on subway trains, characterized in that, include: Air circuit unit, main control circuit, pantograph raising control circuit, pantograph lowering control circuit and power supply; The main control circuit is connected to the raising control circuit and the lowering control circuit; The pantograph raising control circuit and the pantograph lowering control circuit are connected to the pantograph via the pneumatic circuit unit; The power supply is connected to the main control circuit, the bow control circuit, and the bow lowering control circuit to provide operating power.

2. The subway train pantograph training platform according to claim 1, characterized in that, Also includes: An emergency stop button is provided, and the main control circuit is connected to the pantograph raising control circuit and the pantograph lowering control circuit through the emergency stop button.

3. The subway train pantograph training platform according to claim 2, characterized in that, The main control circuit includes: a main control knob and a main control relay; The positive terminal of the power supply is connected to the negative terminal of the power supply through the main control knob and the coil of the main control relay.

4. The subway train pantograph training platform according to claim 3, characterized in that, The bow raising control circuit includes: a bow raising button and a bow raising relay; The positive terminal of the power supply is connected to the negative terminal of the power supply in sequence through the emergency stop button, the normally open contact of the main control relay, the pantograph raising button, and the coil of the pantograph raising relay; The positive terminal of the power supply is connected to the pneumatic circuit unit through the normally open contact of the lifting relay.

5. The subway train pantograph training platform according to claim 4, characterized in that, The pantograph lowering control circuit includes: a pantograph lowering button and a pantograph lowering relay; The positive terminal of the power supply is connected to the negative terminal of the power supply in sequence through the emergency stop button, the normally open contact of the main control relay, the pantograph lowering button, and the coil of the pantograph lowering relay. The emergency stop button is connected to the coil of the raising relay via the normally open contact of the raising relay and the normally closed contact of the lowering relay; The emergency stop button is connected to the coil of the lowering relay via the normally open contact of the lowering relay and the normally closed contact of the raising relay.

6. The subway train pantograph training platform according to claim 5, characterized in that, The gas circuit unit includes: an air supply module, a first shut-off valve, a one-way throttle valve, a lifting solenoid valve, and a second shut-off valve connected in sequence; The lifting solenoid valve is connected to the normally open contact of the lifting relay; The cut-off plug is connected to the pantograph.

7. The subway train pantograph training platform according to claim 6, characterized in that, Also includes: Workstation selection switch, workstation selection relay; The positive terminal of the power supply is connected to the negative terminal of the power supply through the coil of the workstation selection switch and the workstation selection relay; The normally open contact of the lifting relay is connected to the pneumatic circuit unit through the normally open contact of the workstation selection relay.

8. The subway train pantograph training platform according to claim 7, characterized in that, Also includes: Pantograph lifting pressure relay, pantograph lowering position relay, pantograph lifting indicator light, pantograph lowering indicator light, authorized indicator light; The positive terminal of the power supply is connected to the negative terminal of the power supply through the pantograph lifting pressure sensor and the coil of the pantograph lifting pressure relay; The positive terminal of the power supply is connected to the negative terminal of the power supply through the pantograph lowering position sensor and the coil of the pantograph lowering position relay; The positive terminal of the power supply is connected to the negative terminal of the power supply through the normally open contact of the lifting relay and the lifting indicator light. The positive terminal of the power supply is connected to the negative terminal of the power supply through the normally closed contact of the raising relay and the lowering indicator light.

9. The subway train pantograph training platform according to claim 8, characterized in that, Also includes: Acquisition unit, display unit; The data acquisition unit is connected to the main control knob, the normally open contact of the bow lifting pressure relay, the normally open contact of the workstation selection relay, the bow lifting button, the emergency stop button, the normally open contact of the bow lowering position relay, the normally open contact of the main control relay, and the display unit.

10. The subway train pantograph training platform according to claim 6, characterized in that, The air supply module includes: a start switch, a contactor, and an air compressor; The live wire of the power supply is connected to the neutral wire of the power supply through the start switch and the coil of the contactor; The live wire and the neutral wire of the power supply are connected to the air compressor through the normally open contact of the contactor.

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