A safety circuit assisting in the handling of a safety failure of a platform door

Abstract

This utility model relates to a safety circuit for assisting in handling safety faults in platform screen doors. The safety circuit detection switch is a single-pole double-throw switch, installed on the sliding door. When the sliding door is fault-free, the moving end of the single-pole double-throw switch is connected to the first stationary end of the single-pole double-throw switch. When the sliding door malfunctions, the moving end of the single-pole double-throw switch is connected to the second stationary end of the single-pole double-throw switch. The power supply, end door indicator lights, and multiple segmented sections are connected in series to form a closed loop. The moving end of the first single-pole double-throw switch in each segmented section is connected in series with the main line. The first stationary end of the last single-pole double-throw switch in each segmented section is connected in series with the segmented section indicator light and then in series with the main line. The first stationary ends of other single-pole double-throw switches are connected in series with the moving ends of the next single-pole double-throw switch. The second stationary ends of the single-pole double-throw switches in each segmented section are connected in parallel and then in series with the main line. This allows for rapid and accurate location of safety circuit faults in a designated area, shortening fault diagnosis time.

Description

Technical Field

[0001] This utility model relates to the field of subway maintenance technology, and in particular to a safety circuit for assisting in the handling of platform screen door safety malfunctions. Background Technology

[0002] In existing subway platform sliding door technology, when a safety circuit failure occurs, the overall status of the safety circuit is generally determined by observing the indicator lights on the entire side of the safety circuit, which cannot accurately pinpoint the specific section where the failure occurred.

[0003] With the continuous expansion of subway lines and the increasing complexity of equipment types, the causes of safety circuit interruption faults are becoming more and more complex and diverse. Existing safety circuits cannot provide effective support for rapid fault location and efficient handling. Utility Model Content

[0004] The purpose of this invention is to provide a safety circuit for assisting in handling safety faults of platform screen doors, thereby solving the aforementioned problems existing in the prior art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A safety circuit for assisting in the handling of platform screen door safety faults includes a power supply, end door indicator lights, and segmented sections in number matching the number of subway cars. Each segmented section includes segmented section indicator lights and a safety circuit detection switch in number matching the number of sliding doors corresponding to a single subway car. The safety circuit detection switches are single-pole double-throw switches and are installed on the sliding doors. When the sliding doors are fault-free, the moving end of the single-pole double-throw switch is connected to the first stationary end of the single-pole double-throw switch; when the sliding doors malfunction, the moving end of the single-pole double-throw switch is connected to the second stationary end of the single-pole double-throw switch. The power supply, end door indicator lights, and multiple segmented sections are connected in series through a main line to form a closed loop. The moving end of the first single-pole double-throw switch in each segmented section is connected in series with the main line. The first stationary end of the last single-pole double-throw switch in each segmented section is connected in series with the segmented section indicator lights and then in series with the main line. The first stationary ends of other single-pole double-throw switches are connected in series with the moving ends of the next single-pole double-throw switch. The second stationary ends of the single-pole double-throw switches in each segmented section are connected in parallel and then in series with the main line.

[0006] The beneficial effects of this invention are as follows: By adding a safety circuit detection switch to the corresponding sliding door of each carriage, difficult-to-distinguish signals are converted into indicator light signals. Through this visual method, the condition of the safety circuit can be intuitively identified. This allows for rapid and accurate location of safety circuit faults in designated areas, shortening the troubleshooting time for station staff and maintenance personnel, improving emergency response efficiency, reducing the impact on subway operations, and enhancing the safety and reliability of subway operations.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, there are two end gate indicator lights, which are set on the main lines at both ends of the segmented section.

[0009] The further beneficial effect of adopting the above is that the two end door indicator lights can be set at the front and rear of the subway platform respectively, so that maintenance personnel only need to observe any end door indicator light to determine whether the main line or power supply is faulty, which is more efficient. Attached Figure Description

[0010] Figure 1 This is a circuit diagram of a system for assisting in handling safety faults of platform screen doors according to the present invention; Figure 2 This is a schematic diagram of a sliding door malfunction in a system for assisting in the handling of platform screen door safety faults according to this utility model. Figure 3 This is a normal schematic diagram of a sliding door in a system for assisting in handling safety faults of platform screen doors according to this utility model.

[0011] The attached diagram lists the components represented by each number as follows: 1. Power supply; 2. End gate indicator light; 3. Segmented section; 31. Safety circuit detection switch; 32. Segmented section indicator light. Detailed Implementation

[0012] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0013] Example 1 like Figures 1 to 3 As shown, a safety circuit for assisting in the handling of platform screen door safety faults includes a power supply 1, end door indicator lights 2, and segmented sections 3 in number consistent with the number of subway cars. Each segmented section 3 includes segmented section indicator lights 32 and safety circuit detection switches 31 in number consistent with the number of sliding doors corresponding to a single subway car. The safety circuit detection switches 31 are single-pole double-throw switches and are installed on the sliding doors so that when the sliding doors are fault-free, the moving end of the single-pole double-throw switch is connected to the first stationary end of the single-pole double-throw switch; when the sliding doors are faulty, the moving end of the single-pole double-throw switch is connected to the second stationary end of the single-pole double-throw switch. The power supply 1, end door indicator lights 2, and multiple segmented sections 3 are connected in series through a main line to form a closed loop. The moving end of the first single-pole double-throw switch in each segmented section 3 is connected in series with the main line. The first stationary end of the last single-pole double-throw switch in each segmented section 3 is connected in series with the segmented section indicator lights 32 and then in series with the main line. The first stationary ends of other single-pole double-throw switches are connected in series with the moving ends of the next single-pole double-throw switch. The second stationary ends of the single-pole double-throw switches in each segmented section 3 are connected in parallel and then in series with the main line.

[0014] When all sliding doors in the carriage are functioning properly, and the main line and power supply 1 are functioning properly, the moving end of each safety circuit detection switch 31 connects to the first stationary end, and the section indicator lights 32 in each section 3 illuminate, while the end door indicator lights 2 of the entire line illuminate. When any sliding door malfunctions, and the main line and power supply 1 are functioning properly, the moving end of the corresponding safety circuit detection switch 31 in that section 3 connects to the second stationary end, the current does not pass through the section indicator lights 32 in that section 3, and the section indicator lights 32 do not illuminate. The section indicator lights 32 in other sections 3 illuminate, and the end door indicator lights 2 illuminate. By observing the illumination / discontinuation status of each section indicator light 32, station staff can quickly locate the section 3 where the fault occurred. By adding a safety circuit detection switch 31 to the corresponding sliding door of each carriage, the difficult-to-distinguish signals are converted into indicator light signals. Through this visual method, the safety circuit status can be intuitively identified. It can quickly and accurately locate the fault position of the safety circuit in a designated area, shorten the fault investigation time of station staff and maintenance personnel, improve the efficiency of emergency response, reduce the impact on subway operation, and enhance the safety and reliability of subway operation.

[0015] like Figure 2-3 As shown, there are six segments 3, and four safety circuit detection switches 31 are installed in each segment 3; the six segments 3 correspond to the six cars of the subway, and the four safety circuit detection switches 31 of each segment 3 correspond to the four sliding doors of each subway car. Figure 2 The fault was found in the second sliding door of the first carriage; the sixth carriage had no fault. Figure 3 There were no faults in the first and sixth carriages.

[0016] Example 2 like Figure 1 As shown, this embodiment is a further improvement on embodiment 1, as detailed below: There are two end-door indicator lights 2, located on the main lines at both ends of the segmented section 3. The two end-door indicator lights 2 can be installed at the front and rear of the subway platform respectively, allowing maintenance personnel to determine whether the main line or power supply is faulty simply by observing either end-door indicator light 2, thus improving efficiency. When all segmented section indicator lights 32 are off and the end-door indicator lights 2 are also off, it indicates a fault in the main line or power supply 1 of the safety circuit.

[0017] Both the end gate indicator light 2 and the section indicator light 32 are green. The green light indicates no fault and is highly identifiable.

[0018] Example 3 like Figure 2 As shown, this embodiment is a further improvement on any one of embodiments 1 to 2, as detailed below: Power supply 1 is a DC power supply. The output current of DC power supply 1 remains constant and is unaffected by fluctuations in the mains voltage, thus providing a stable power supply to the load. In specific implementation, power supply 1 is a 24V DC power supply.

[0019] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety circuit to assist in the handling of a safety failure of a platform door, characterized in that, The system includes a power supply (1), end door indicator lights (2), and segmented sections (3) in number matching the number of subway cars. Each segmented section (3) includes a segmented section indicator light (32) and a safety circuit detection switch (31) in number matching the number of sliding doors corresponding to a single subway car. The safety circuit detection switch (31) is a single-pole double-throw switch and is installed on the sliding door so that when the sliding door is fault-free, the moving end of the single-pole double-throw switch is connected to the first stationary end of the single-pole double-throw switch; when the sliding door malfunctions, the moving end of the single-pole double-throw switch is connected to the second stationary end of the single-pole double-throw switch. The power supply (1), the end gate indicator (2), and multiple segmented sections (3) are connected in series through the main line to form a closed loop; the moving end of the first single-pole double-throw switch of each segmented section (3) is connected in series with the main line; the first stationary end of the last single-pole double-throw switch of each segmented section (3) is connected in series with the segmented section indicator (32) and then connected in series with the main line; the first stationary end of the other single-pole double-throw switches is connected in series with the moving end of the next single-pole double-throw switch; the second stationary end of the single-pole double-throw switches of each segmented section (3) is connected in parallel and then connected in series with the main line.

2. A safety circuit for assisting in the handling of a safety failure of a platform door, according to claim 1, characterized in that There are two end gate indicator lights (2), which are set on the main lines at both ends of the segmented section (3).

3. A safety circuit for assisting in the handling of a safety failure of a platform door according to claim 2, characterized in that, Both the end gate indicator (2) and the segmented section indicator (32) are green.

4. The safety circuit for assisting the platform door safety fault handling according to any one of claims 1 to 3, characterized in that, The power supply (1) is a DC power supply (1).

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