Coupling and uncoupling control circuit and control method for electric coupler of rail transit vehicle

Abstract

The invention provides a coupling and uncoupling control circuit and method for an electric coupler of a rail transit vehicle, and belongs to the technical field of coupling and uncoupling of trains, the coupling and uncoupling control circuit comprises a manual control module, a state indication module, a relay control module, a coupler execution module and an interaction module, the manual control module adopts an uncoupling button and is used for controlling uncoupling operation; the state indication module comprises an uncoupling indication lamp (LED1) and a coupling indication lamp (LED2) and is used for indicating the current coupling and uncoupling states of the vehicle; the relay control module comprises an uncoupling control relay KU1, an uncoupling control relay K1, an uncoupling control relay K2, an uncoupling control relay K3 and an uncoupling control delay relay KT3, and is used for controlling the operation of the car coupler execution module; the car coupler execution module comprises a main shaft limiting switch S1, a hanging face connecting limiting switch S2, an electric coupler retraction feedback switch S3, an electromagnetic valve EV1, an electromagnetic valve EV2 and an electromagnetic valve EV3; the interaction module adopts a TCMS IO port and is used for receiving a coupling state signal and an uncoupling instruction signal.

Description

Technical Field

[0001] This invention belongs to the field of train coupling and uncoupling technology. Specifically, this invention relates to a coupling and uncoupling control circuit and control method for tram couplers in rail transit vehicles. Background Technology

[0002] The APM300 is a medium-to-low capacity vehicle, mainly used as a shuttle bus within airports. Due to the large fluctuations in airport passenger traffic, frequent uncoupling and coupling of vehicles are required.

[0003] Chinese Patent 112124367A provides a train coupling control method and control system. The system includes: an ATS instructing a passively coupled trailer to travel to a corresponding coupling area and enter a coupling-ready state; an ATS instructing an actively coupled trailer to travel to a position at a preset distance from the passively coupled trailer and enter a coupling-ready state; after receiving a decoupling command from the ATS, the actively coupled trailer travels towards the passively coupled trailer according to a safe collision distance sent by the ZC until coupling is completed; after the ZC obtains that the passively coupled trailer and the actively coupled trailer have completed coupling, it performs a merge operation of the identification and position of the passively coupled trailer and the actively coupled trailer, and sends a merge completion message to both the passively coupled trailer and the actively coupled trailer; one of the passively coupled trailer and the actively coupled trailer reports the position of the vehicle after coupling to the ZC.

[0004] Existing technologies do not provide a solution for the rapid coupling and uncoupling of trains. Summary of the Invention

[0005] This invention aims to provide a control circuit and method for coupling and uncoupling trolley couplers in rail transit vehicles, in order to achieve the technical objective of quickly completing the coupling and uncoupling of trains.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] This invention provides a coupling and uncoupling control circuit for a trolley coupler in a rail transit vehicle, comprising a manual control module, a status indication module, a relay control module, a coupler execution module, and an interaction module. The manual control module uses an uncoupling button to control the uncoupling operation.

[0008] The status indication module includes an uncoupling indicator (LED1) and a coupling indicator (LED2) to indicate the current coupling and uncoupling status of the vehicle.

[0009] The relay control module includes uncoupling control relay KU1, uncoupling control relay K1, uncoupling control relay K2, uncoupling control relay K3 and uncoupling control delay relay KT3, which are used to control the operation of the coupler execution module;

[0010] The coupler execution module includes a main shaft limit switch S1, a coupling surface limit switch S2, an electric coupler retraction feedback switch S3, and solenoid valves EV1, EV2, and EV3.

[0011] The interaction module uses the TCMS IO port to receive connection status signals and unhooking command signals.

[0012] The 4V DC power supply is connected to the coil of the unhooking control relay KU1 through a series connection of diode D1 and unhooking button and grounded. The unhooking button is connected to the unhooking indicator light (LED1) through diode D2 and grounded.

[0013] The unhooking button is connected to the normally open contact 1 of the unhooking control relay KU1 via diode D2, and is connected to the cathode of diode D3, which is connected in parallel with the normally open contact 1 / 2 of the control relay KU1.

[0014] The normally open contact 2 of the unhooking control relay KU1 is grounded through the coils of the unhooking control relay K1 and the unhooking control relay K2, respectively. The normally open contact 2 of the unhooking control relay KU1 is grounded in series through the coil of the unhooking control relay K3 and the normally open contact 1 / 2 of the unhooking control delay relay KT3. The 24V DC power supply is connected to the TCMS IO port through the normally open contact 1 / 2 of the unhooking control relay K1.

[0015] The normally open contact 2 of the unhooking control relay KU1 is connected to the normally closed contact 1 of the unhooking control relay K3. The normally closed contact 2 of the unhooking control relay K3 is connected to the cathode of the diode D4. The anode of the diode D4 is connected to a 24V DC power supply through the normally open contact 1 / 2 of the unhooking control relay K2.

[0016] The normally closed contact 2 of the unhooking control relay K3 is connected to ground in series with the contact 1 / 2 of the limit switch S2 and the coil of the unhooking control delay relay KT3.

[0017] The anode of diode D4 is grounded through solenoid valve EV2, and the anode of diode D4 is grounded in series with solenoid valve EV3 through electric hook retraction feedback switch S3.

[0018] The 24V DC power supply is grounded in series through the normally closed contact 3 / 4 of the unhooking control relay K2, the contact 3 / 4 of the connecting surface limit switch S2, the spindle limit switch S1, and the connecting indicator light (LED2). The 24V DC power supply is also grounded in series through the normally closed contact 3 / 4 of the unhooking control relay K2, the contact 3 / 4 of the connecting surface limit switch S2, the spindle limit switch S1, and the solenoid valve EV1. The 24V DC power supply is connected to the TCMS IO port through the normally closed contact 3 / 4 of the unhooking control relay K2, the contact 3 / 4 of the connecting surface limit switch S2, and the spindle limit switch S1.

[0019] This invention provides a control method for the coupling and uncoupling control circuit of a rail transit vehicle trolley coupler:

[0020] Coupling control method: When two trains are coupled, the normally closed contact 3 / 4 of the uncoupling control relay K2, the contact 3 / 4 of the main shaft limit switch S1 and the contact 3 / 4 of the coupling surface limit switch S2 are all closed, the coupling indicator light (LED2) is powered on and illuminated, and a high-level signal of coupling status is input to the TCMS IO port.

[0021] Unhooking control method: After pressing the unhooking button, the coil of the unhooking control relay KU1 is energized, the normally open contact 1 / 2 of the unhooking control relay KU1 is closed, and the unhooking indicator light (LED1) lights up;

[0022] When the coil of the unhooking control relay K1 is energized, the normally open contact 1 / 2 of the unhooking control relay K1 closes, and the unhooking command signal is input to the TCMS IO port;

[0023] When the coil of the uncoupling control relay K2 is energized, the normally closed contact 3 / 4 of the uncoupling control relay K2 opens, the coupling indicator light (LED2) goes out, the normally open contact 1 / 2 of the uncoupling control relay K2 closes to form a self-locking circuit, the solenoid valve EV2 on the coupler is energized, and the electric coupler is retracted.

[0024] When the electric hook is fully retracted, the electric hook retraction feedback switch S3 closes, the solenoid valve EV3 on the coupler is energized, and the mechanical coupler is unhooked.

[0025] When the contact 1 / 2 of the coupler coupling limit switch S2 is closed, the coil of the uncoupling control delay relay KT3 is energized. After a delay, the relay contact 1 / 2 of the uncoupling control delay relay KT3 closes after a delay.

[0026] When the coil of the unhooking control relay K3 is energized, the normally closed contact 1 / 2 of the unhooking control relay K3 is de-energized and opens. When the coil of the unhooking control relay K1 is de-energized, the normally open contact 1 / 2 of the unhooking control relay K1 opens, and the unhooking command signal is input to the TCMSIO port. When the coil of the unhooking control relay K2 is de-energized, the normally open contact 1 / 2 of the unhooking control relay K2 opens, and the unhooking is completed.

[0027] The technical effects of this invention are as follows:

[0028] (1) The present invention enables the rapid completion of train coupling and uncoupling operations in a short period of time, meeting the on-site operational needs.

[0029] (2) This invention has the advantages of high operational efficiency and adaptability to on-site operation needs. By optimizing the coupling and uncoupling control logic, it realizes the rapid completion of train coupling and uncoupling operations. When coupling, the coupling status can be quickly fed back through contact linkage. When uncoupling, only the uncoupling button needs to be pressed to trigger the orderly action of relays, solenoid valves and time delay relays to complete the entire process of electrical unlocking and mechanical uncoupling. No complicated operation steps are required, which greatly shortens the operation time and fully meets the operation needs of high-density operation and rapid dispatch on site.

[0030] (3) The circuit of the present invention is simple and reliable, with precise control and clear status feedback. The uncoupling control circuit simplifies the circuit structure, reduces fault nodes, and improves the stability of long-term operation by reasonably arranging components such as relays, diodes, and limit switches. The circuit can not only accurately control the solenoid valve, time delay relay and other actuators to complete the core actions of coupling and uncoupling, but also intuitively display the operation status through coupling indicator (LED2) and uncoupling indicator (LED1). At the same time, it can provide real-time feedback of high-level signal of coupling status and high and low-level signal of uncoupling command to the driver's control panel through the TCMSIO port, so that the driver can clearly understand the working status of the coupler, effectively guide the standardized operation of coupling and uncoupling, and reduce the risk of operational errors. Attached Figure Description

[0031] This manual includes the following figures, which illustrate the following:

[0032] Figure 1 This is a circuit diagram of a coupling and uncoupling control circuit and control method for a rail transit vehicle trolley coupler according to the present invention.

[0033] Figure 2 This is a circuit diagram of a manual control panel for a control circuit and control method for coupling and uncoupling a trolley coupler in a rail transit vehicle according to the present invention.

[0034] Figure 3 This is a relay panel circuit diagram of a control circuit and control method for coupling and uncoupling a trolley coupler in a rail transit vehicle according to the present invention.

[0035] Figure 4 This is a circuit diagram of a coupler control circuit and control method for coupling and uncoupling a rail transit vehicle coupler according to the present invention. Detailed Implementation

[0036] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.

[0037] This invention provides a coupling and uncoupling control circuit for a trolley coupler in a rail transit vehicle, comprising a manual control module, a status indication module, a relay control module, a coupler execution module, and an interaction module. The manual control module uses an uncoupling button to control the uncoupling operation.

[0038] The status indication module includes an uncoupling indicator (LED1) and a coupling indicator (LED2) to indicate the current coupling and uncoupling status of the vehicle.

[0039] The relay control module includes uncoupling control relay KU1, uncoupling control relay K1, uncoupling control relay K2, uncoupling control relay K3 and uncoupling control delay relay KT3, which are used to control the operation of the coupler execution module;

[0040] The coupler execution module includes a main shaft limit switch S1, a coupling surface limit switch S2, an electric coupler retraction feedback switch S3, and solenoid valves EV1, EV2, and EV3.

[0041] The interaction module uses the TCMSIO port to receive connection status signals and unhooking command signals.

[0042] The 4V DC power supply is connected to the coil of the unhooking control relay KU1 through a series connection of diode D1 and unhooking button and grounded. The unhooking button is connected to the unhooking indicator light (LED1) through diode D2 and grounded.

[0043] The unhooking button is connected to the normally open contact 1 of the unhooking control relay KU1 via diode D2, and is connected to the cathode of diode D3, which is connected in parallel with the normally open contact 1 / 2 of the control relay KU1.

[0044] The normally open contact 2 of the unhooking control relay KU1 is grounded through the coils of the unhooking control relay K1 and the unhooking control relay K2, respectively. The normally open contact 2 of the unhooking control relay KU1 is grounded in series through the coil of the unhooking control relay K3 and the normally open contact 1 / 2 of the unhooking control delay relay KT3. The 24V DC power supply is connected to the TCMSIO port through the normally open contact 1 / 2 of the unhooking control relay K1.

[0045] The normally open contact 2 of the unhooking control relay KU1 is connected to the normally closed contact 1 of the unhooking control relay K3. The normally closed contact 2 of the unhooking control relay K3 is connected to the cathode of the diode D4. The anode of the diode D4 is connected to a 24V DC power supply through the normally open contact 1 / 2 of the unhooking control relay K2.

[0046] The normally closed contact 2 of the unhooking control relay K3 is connected to ground in series with the contact 1 / 2 of the limit switch S2 and the coil of the unhooking control delay relay KT3.

[0047] The anode of diode D4 is grounded through solenoid valve EV2, and the anode of diode D4 is grounded in series with solenoid valve EV3 through electric hook retraction feedback switch S3.

[0048] The 24V DC power supply is grounded in series through the normally closed contact 3 / 4 of the unhooking control relay K2, the contact 3 / 4 of the connecting surface limit switch S2, the spindle limit switch S1, and the connecting indicator light (LED2). The 24V DC power supply is also grounded in series through the normally closed contact 3 / 4 of the unhooking control relay K2, the contact 3 / 4 of the connecting surface limit switch S2, the spindle limit switch S1, and the solenoid valve EV1. The 24V DC power supply is connected to the TCMS IO port through the normally closed contact 3 / 4 of the unhooking control relay K2, the contact 3 / 4 of the connecting surface limit switch S2, and the spindle limit switch S1.

[0049] This invention provides a control method for the coupling and uncoupling control circuit of a rail transit vehicle trolley coupler:

[0050] Coupling control method: When two trains are coupled, the normally closed contact 3 / 4 of the uncoupling control relay K2, the contact 3 / 4 of the main shaft limit switch S1 and the contact 3 / 4 of the coupling surface limit switch S2 are all closed, the coupling indicator light (LED2) is powered on and illuminated, and a high-level signal of coupling status is input to the TCMS IO port.

[0051] Unhooking control method: After pressing the unhooking button, the coil of the unhooking control relay KU1 is energized, the normally open contact 1 / 2 of the unhooking control relay KU1 is closed, and the unhooking indicator light (LED1) lights up;

[0052] When the coil of the unhooking control relay K1 is energized, the normally open contact 1 / 2 of the unhooking control relay K1 closes, and the unhooking command signal is input to the TCMS IO port;

[0053] When the coil of the uncoupling control relay K2 is energized, the normally closed contact 3 / 4 of the uncoupling control relay K2 opens, the coupling indicator light (LED2) goes out, the normally open contact 1 / 2 of the uncoupling control relay K2 closes to form a self-locking circuit, the solenoid valve EV2 on the coupler is energized, and the electric coupler is retracted.

[0054] When the electric hook is fully retracted, the electric hook retraction feedback switch S3 closes, the solenoid valve EV3 on the coupler is energized, and the mechanical coupler is unhooked.

[0055] When the contact 1 / 2 of the coupler coupling limit switch S2 is closed, the coil of the uncoupling control delay relay KT3 is energized. After a delay, the relay contact 1 / 2 of the uncoupling control delay relay KT3 closes after a delay.

[0056] When the coil of the unhooking control relay K3 is energized, the normally closed contact 1 / 2 of the unhooking control relay K3 is de-energized and opens. When the coil of the unhooking control relay K1 is de-energized, the normally open contact 1 / 2 of the unhooking control relay K1 opens, and the unhooking command signal is input to the TCMSIO port. When the coil of the unhooking control relay K2 is de-energized, the normally open contact 1 / 2 of the unhooking control relay K2 opens, and the unhooking is completed.

[0057] The connection relationships of the present invention are described in detail below.

[0058] The 4V DC power supply is connected to the coil of the unhooking control relay KU1 through a series connection of diode D1 and unhooking button and grounded. The unhooking button is connected to the unhooking indicator light (LED1) through diode D2 and grounded. The unhooking button is connected to the normally open contact 1 of the unhooking control relay KU1 through diode D2 and connected to the cathode of diode D3, which is connected in parallel with the normally open contact 1 / 2 of the control relay KU1.

[0059] The normally open contact 2 of the unhooking control relay KU1 is grounded through the coils of both the unhooking control relay K1 and the unhooking control relay K2. The normally open contact 2 of the unhooking control relay KU1 is also grounded in series with the coil of the unhooking control relay K3 and the normally open contact 1 / 2 of the unhooking control delay relay KT3. A 24V DC power supply is connected to the TCMS IO port through the normally open contact 1 / 2 of the unhooking control relay K1. The normally open contact 2 of the unhooking control relay KU1 is connected to the normally closed contact 1 of the unhooking control relay K3. The normally closed contact 2 of the unhooking control relay K3 is connected to the cathode of diode D4. The anode of diode D4 is connected to the 24V DC power supply through the normally open contact 1 / 2 of the unhooking control relay K2. The normally closed contact 2 of the unhooking control relay K3 is grounded in series with the contact 1 / 2 of the limit switch S2 and the coil of the unhooking control delay relay KT3. The anode of diode D4 is grounded through solenoid valve EV2. The anode of diode D4 is also grounded in series with solenoid valve EV3 via hook retraction feedback switch S3. The common terminal of solenoid valves EV1, EV2, and EV3 is connected to the coil of unhooking control relay K1, the coil of unhooking control relay K2, and the common terminal of normally open contact 1 / 2 of unhooking control delay relay KT3. The 24V DC power supply is grounded in series through normally closed contact 3 / 4 of unhooking control relay K2, contact 3 / 4 of connecting surface limit switch S2, spindle limit switch S1, and connecting indicator light (LED2). The 24V DC power supply is also grounded in series through normally closed contact 3 / 4 of unhooking control relay K2, contact 3 / 4 of connecting surface limit switch S2, spindle limit switch S1, and solenoid valve EV1. Finally, the 24V DC power supply is connected to the TCMS IO port through normally closed contact 3 / 4 of unhooking control relay K2, contact 3 / 4 of connecting surface limit switch S2, and spindle limit switch S1.

[0060] The following describes in detail the hooking and unhooking method of the present invention.

[0061] The coupling control method is as follows: when two trains are coupled, the normally closed contact 3 / 4 of the uncoupling control relay K2, the contact 3 / 4 of the main shaft limit switch S1, and the contact 3 / 4 of the coupling surface limit switch S2 are all closed, the coupling indicator light (LED2) is powered on and lit, and the coupling status high-level signal is input to the TCMS IO port.

[0062] The uncoupling control method is as follows: After pressing the uncoupling button, the coil of the uncoupling control relay KU1 is energized, the normally open contact 1 / 2 of the uncoupling control relay KU1 closes, and the uncoupling indicator light (LED1) illuminates; the coil of the uncoupling control relay K1 is energized, the normally open contact 1 / 2 of the uncoupling control relay K1 closes, and the uncoupling command signal (high level) is input to the TCMS IO port; the coil of the uncoupling control relay K2 is energized, the normally closed contact 3 / 4 of the uncoupling control relay K2 opens, the coupling indicator light (LED2) goes out, the normally open contact 1 / 2 of the uncoupling control relay K2 closes to form a self-locking circuit, the solenoid valve EV2 on the coupler is energized, and the electric coupler retracts; when the electric coupler is fully retracted, the electric coupler retraction feedback switch S3 closes, the solenoid valve EV3 on the coupler is energized, and the mechanical coupler is uncoupled; the contact 1 / 2 of the coupling surface limit switch S2 of the coupler closes, and the coil of the uncoupling control delay relay KT3 is energized. After a delay, the relay contact 1 / 2 of the uncoupling control delay relay KT3 closes after a delay of approximately 3.5 to 40 seconds. The coil of the uncoupling control relay K3 is energized, and its normally closed contact 1 / 2 opens. The coil of the uncoupling control relay K1 is de-energized, and its normally open contact 1 / 2 opens, sending a low-level uncoupling command signal to the TCMSIO port. The coil of the uncoupling control relay K2 is de-energized, and its normally open contact 1 / 2 opens, completing the uncoupling process. Once the electrical and mechanical uncoupling of the train is complete, the driver can proceed with the train away.

[0063] The beneficial effects of the present invention are described in detail below.

[0064] This invention enables the rapid completion of train coupling and uncoupling operations in a short time, meeting on-site operational needs.

[0065] This invention has the advantages of high operational efficiency and adaptability to on-site operational needs. By optimizing the coupling and uncoupling control logic, it enables the rapid completion of train coupling and uncoupling operations. During coupling, the coupling status can be quickly fed back through contact linkage. During uncoupling, simply pressing the uncoupling button triggers the orderly action of relays, solenoid valves, and time-delay relays to complete the entire process of electrical unlocking and mechanical uncoupling. No complicated operation steps are required, which greatly shortens the operation time and fully meets the operational needs of high-density operation and rapid dispatch on site.

[0066] The circuit of this invention is simple and reliable, with precise control and clear status feedback. The uncoupling control circuit simplifies the circuit structure, reduces fault points, and improves long-term operational stability by rationally arranging components such as relays, diodes, and limit switches. The circuit can not only accurately control the solenoid valve, time delay relay, and other actuators to complete the core actions of coupling and uncoupling, but also intuitively display the operation status through coupling indicator (LED2) and uncoupling indicator (LED1). At the same time, it feeds back the high-level signal of coupling status and the high and low-level signals of uncoupling command to the driver's control panel in real time through the TCMS IO port, allowing the driver to clearly understand the working status of the coupler, effectively guide the standardized operation of coupling and uncoupling, and reduce the risk of operational errors.

[0067] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A coupling and uncoupling control circuit for a trolley coupler in a rail transit vehicle, characterized in that: It includes a manual control module, a status indication module, a relay control module, a coupler execution module, and an interaction module. The manual control module uses an uncoupling button to control the uncoupling operation. The status indication module includes an uncoupling indicator (LED1) and a coupling indicator (LED2) to indicate the current coupling and uncoupling status of the vehicle. The relay control module includes uncoupling control relay KU1, uncoupling control relay K1, uncoupling control relay K2, uncoupling control relay K3 and uncoupling control delay relay KT3, which are used to control the operation of the coupler execution module; The coupler execution module includes a main shaft limit switch S1, a coupling surface limit switch S2, an electric coupler retraction feedback switch S3, and solenoid valves EV1, EV2, and EV3. The interaction module uses the TCMS IO port to receive connection status signals and unhooking command signals.

2. The coupling and uncoupling control circuit for a rail transit vehicle trolley coupler as described in claim 1, characterized in that: The 4V DC power supply is connected to the coil of the unhooking control relay KU1 through a series connection of diode D1 and unhooking button and grounded. The unhooking button is connected to the unhooking indicator light (LED1) through diode D2 and grounded.

3. The coupling and uncoupling control circuit for a rail transit vehicle trolley coupler as described in claim 1, characterized in that: The unhooking button is connected to the normally open contact 1 of the unhooking control relay KU1 via diode D2, and is connected to the cathode of diode D3, which is connected in parallel with the normally open contact 1 / 2 of the control relay KU1.

4. The coupling and uncoupling control circuit for a rail transit vehicle trolley coupler as described in claim 1, characterized in that: The normally open contact 2 of the unhooking control relay KU1 is grounded through the coils of the unhooking control relay K1 and the unhooking control relay K2, respectively. The normally open contact 2 of the unhooking control relay KU1 is grounded in series through the coil of the unhooking control relay K3 and the normally open contact 1 / 2 of the unhooking control delay relay KT3. The 24V DC power supply is connected to the TCMS IO port through the normally open contact 1 / 2 of the unhooking control relay K1.

5. The coupling and uncoupling control circuit for a rail transit vehicle trolley coupler as described in claim 1, characterized in that: The normally open contact 2 of the unhooking control relay KU1 is connected to the normally closed contact 1 of the unhooking control relay K3. The normally closed contact 2 of the unhooking control relay K3 is connected to the cathode of the diode D4. The anode of the diode D4 is connected to a 24V DC power supply through the normally open contact 1 / 2 of the unhooking control relay K2.

6. The coupling and uncoupling control circuit for a rail transit vehicle trolley coupler as described in claim 1, characterized in that: The normally closed contact 2 of the unhooking control relay K3 is connected to ground in series with the contact 1 / 2 of the limit switch S2 and the coil of the unhooking control delay relay KT3.

7. The coupling and uncoupling control circuit for a rail transit vehicle trolley coupler as described in claim 1, characterized in that: The anode of diode D4 is grounded through solenoid valve EV2, and the anode of diode D4 is grounded in series with solenoid valve EV3 through electric hook retraction feedback switch S3.

8. The coupling and uncoupling control circuit for a rail transit vehicle trolley coupler as described in claim 1, characterized in that: The 24V DC power supply is grounded in series through the normally closed contact 3 / 4 of the unhooking control relay K2, the contact 3 / 4 of the connecting surface limit switch S2, the spindle limit switch S1, and the connecting indicator light (LED2). The 24V DC power supply is also grounded in series through the normally closed contact 3 / 4 of the unhooking control relay K2, the contact 3 / 4 of the connecting surface limit switch S2, the spindle limit switch S1, and the solenoid valve EV1. The 24V DC power supply is connected to the TCMS IO port through the normally closed contact 3 / 4 of the unhooking control relay K2, the contact 3 / 4 of the connecting surface limit switch S2, and the spindle limit switch S1.

9. A control method for the coupling and uncoupling control circuit of a rail transit vehicle trolley coupler as described in any one of claims 1-8, characterized in that: Coupling control method: When two trains are coupled, the normally closed contact 3 / 4 of the uncoupling control relay K2, the contact 3 / 4 of the main shaft limit switch S1 and the contact 3 / 4 of the coupling surface limit switch S2 are all closed, the coupling indicator light (LED2) is powered on and illuminated, and a high-level signal of coupling status is input to the TCMS IO port. Unhooking control method: After pressing the unhooking button, the coil of the unhooking control relay KU1 is energized, the normally open contact 1 / 2 of the unhooking control relay KU1 closes, and the unhooking indicator light (LED1) lights up; When the coil of the unhooking control relay K1 is energized, the normally open contact 1 / 2 of the unhooking control relay K1 closes, and the unhooking command signal is input to the TCMS IO port; When the coil of the uncoupling control relay K2 is energized, the normally closed contact 3 / 4 of the uncoupling control relay K2 opens, the coupling indicator light (LED2) goes out, the normally open contact 1 / 2 of the uncoupling control relay K2 closes to form a self-locking circuit, the solenoid valve EV2 on the coupler is energized, and the electric coupler is retracted. When the electric hook is fully retracted, the electric hook retraction feedback switch S3 closes, the solenoid valve EV3 on the coupler is energized, and the mechanical coupler is unhooked. When the contact 1 / 2 of the coupler coupling limit switch S2 is closed, the coil of the uncoupling control delay relay KT3 is energized. After a delay, the relay contact 1 / 2 of the uncoupling control delay relay KT3 closes after a delay. When the coil of the unhooking control relay K3 is energized, the normally closed contact 1 / 2 of the unhooking control relay K3 is de-energized and opens; when the coil of the unhooking control relay K1 is de-energized, the normally open contact 1 / 2 of the unhooking control relay K1 opens; and the unhooking command signal is input to the TCMS IO port. When the coil of the unhooking control relay K2 is de-energized, the normally open contact 1 / 2 of the unhooking control relay K2 opens, and the unhooking is completed.

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