A passenger room lighting power supply device during non-electric operation of a subway train

Abstract

The utility model discloses a passenger room lighting power supply device during subway train no -electric operation, include: power supply branch, first power supply branch, second power supply branch, change over switch, monitor instrument, power supply is connected with power supply branch, power supply branch, first power supply branch, second power supply branch are in parallel set up, the public end of power supply connection change over switch, and the free end of change over switch is connected first load through first power supply branch, and is connected second load through second power supply branch, and monitor instrument is connected with the public end of change over switch, power supply, and power supply branch starts according to starting signal, and first power supply branch, second power supply branch are communicated with first load, second load according to the start of power supply branch. Through setting up power supply branch, control first power supply branch, second power supply branch, and the connecting point of first load is accessed to one -sided lighting power supply output interface, and the connecting point of second load is accessed to whole car lighting power supply output interface, and then provides power supply for passenger room lighting.

Description

Technical Field

[0001] This utility model belongs to the field of subway train power supply technology, specifically relating to a passenger compartment lighting power supply device during subway train operation without electricity. Background Technology

[0002] In the current technology, subway trains do not have a 110V control power supply, and the working environment inside the passenger compartment is relatively dark. Especially in the interior repair work in the passenger compartment, the workers can only use traditional lighting equipment such as flashlights to illuminate the work.

[0003] The illuminance of a flashlight compared to normal passenger cabin lighting differs significantly in terms of illumination range, light intensity, and color temperature. This can lead to issues such as missed inspections of minor defects and color differences in interior trim during inspections and repairs, which can negatively impact the quality of passenger cabin interior work. Utility Model Content

[0004] To overcome the above-mentioned technical defects, this utility model provides a power supply device for passenger compartment lighting during subway train operation without electricity, which can improve the quality and efficiency of operation.

[0005] This utility model is achieved through the following solution:

[0006] A power supply device for passenger compartment lighting during subway train de-energization operations includes: a power supply branch, a first power supply branch, a second power supply branch, a switching switch, monitoring instruments, and a power supply.

[0007] The power supply is connected to the power supply branch;

[0008] The power supply branch, the first power supply branch, and the second power supply branch are connected in parallel;

[0009] The power supply is connected to the common terminal of the switching switch, and the free terminal of the switching switch is connected to the first load through the first power supply branch and to the second load through the second power supply branch.

[0010] The monitoring instrument is connected to the common terminal of the switching switch and the power supply;

[0011] The power supply branch is activated according to the start signal, and the first power supply branch and the second power supply branch are connected to the first load and the second load respectively according to the activation of the power supply branch.

[0012] As a further improvement of this utility model, the power supply branch includes: a start button, a stop button, and a start relay;

[0013] The positive terminal of the power supply is connected to the negative terminal of the power supply through the coil of the off button, the start button, and the start relay.

[0014] As a further improvement of this utility model, this utility model also includes: a self-locking control branch connected in parallel on both sides of the start button.

[0015] As a further improvement of this utility model, the self-locking control branch includes: a first normally open contact of the start relay; the first normally open contact is connected in parallel with the start button.

[0016] As a further improvement of this utility model, the first power supply branch includes: the second normally open contact of the starting relay, and the free end of the switching switch is connected to the negative terminal of the power supply through the second normally open contact of the starting relay and the first load.

[0017] As a further improvement of this utility model, the second power supply branch includes: the third normally open contact of the starting relay, and the free end of the switching switch is connected to the negative terminal of the power supply through the third normally open contact of the starting relay and the first load.

[0018] As a further improvement of this utility model, this utility model also includes: an indicator branch connected in parallel with the power supply branch, the indicator branch being activated according to the start signal.

[0019] As a further improvement of this utility model, the indicator branch includes: a start indicator circuit and a stop indicator circuit arranged in parallel; both the start indicator circuit and the stop indicator circuit are connected to the power supply.

[0020] As a further improvement of this utility model, the start-up indicator circuit includes: the fourth normally open contact of the start-up relay and the first indicator light, and the positive terminal of the power supply is connected to the negative terminal of the power supply through the fourth normally open contact of the start-up relay and the first indicator light;

[0021] The shutdown indication circuit includes: a first normally closed contact of the start relay and a second indicator light. The positive terminal of the power supply is connected to the negative terminal of the power supply through the first normally closed contact of the start relay and the second indicator light.

[0022] As a further improvement of this utility model, this utility model also includes: an overcurrent relay;

[0023] The coil of the overcurrent relay is connected to the positive and negative terminals of the power supply.

[0024] The positive terminal of the power supply is connected to the common terminal of the switching switch through the normally closed contact of the overcurrent relay.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting up power supply branches, the first power supply branch and the second power supply branch are controlled, the connection point of the first load is connected to the single-sided lighting power supply output interface, and the connection point of the second load is connected to the whole vehicle lighting power supply output interface, thereby providing power for passenger compartment lighting. In addition, the conduction of the branch is switched by the switching switch to meet the lighting needs during operation, and also to ensure the reliability of subsequent equipment and guarantee the quality of the overhaul operation. Attached Figure Description

[0026] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0027] Figure 1 This is an electrical schematic diagram of the passenger room lighting power supply device described in this utility model;

[0028] Figure 2 This is a front view of the passenger room lighting power supply device described in this utility model;

[0029] Figure 3 This is a perspective view of the passenger room lighting power supply device described in this utility model;

[0030] Explanation of reference numerals in the attached diagram: 1. Power supply branch; 2. First power supply branch; 3. Second power supply branch; 4. Self-locking control branch; 5. Indicator branch; 51. Start indicator circuit; 52. Stop indicator circuit; 6. Explosion-proof outer casing; 7. Power socket; 8. First connection terminal; 9. Second connection terminal. Detailed Implementation

[0031] 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.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] This utility model provides a power supply device for passenger compartment lighting during subway train operation without electricity, such as... Figure 1 and Figure 2 As shown, it includes: power supply branch 1, first power supply branch 2, second power supply branch 3, a switch, a monitoring instrument, and a power supply; the power supply is connected to power supply branch 1; power supply branch 1, first power supply branch 2, and second power supply branch 3 are connected in parallel; the power supply is connected to the common terminal of the switch, and the free terminal of the switch SW1 is connected to the first load through the first power supply branch 2 and to the second load through the second power supply branch 3; the monitoring instrument U3 is connected to the common terminal of the switch SW1 and the power supply; power supply branch 1 is activated according to the start signal, and the first power supply branch 2 and the second power supply branch 3 are connected to the first load U1 and the second load U2 according to the activation of power supply branch 1.

[0035] This utility model features two lighting modes: single-side lighting drive for a single car section and double-side lighting drive for a single car section (i.e., whole-vehicle lighting). The two modes are switched via a switch. In single-side lighting mode, the LED light panel on one side of the passenger compartment is illuminated, providing single-side lighting for the passenger compartment. In double-side lighting mode, power is supplied to the passenger compartment lighting circuit, illuminating the LED light panels on both sides of the passenger compartment.

[0036] The monitoring instrument can be an ammeter or voltmeter to monitor the current and voltage in real time.

[0037] Power supply branch 1 includes: start button SB2, stop button SB1, and start relay KM1; the positive terminal VCC of the power supply is connected to ground GND through the coils of stop button SB1, start button SB2, and start relay KM1.

[0038] In addition, this utility model also includes: a self-locking control branch 4 connected in parallel on both sides of the start button.

[0039] The self-locking control branch 4 includes: the first normally open contact of the start relay KM1; the first normally open contact is connected in parallel with the start button SB2.

[0040] The first power supply branch 2 includes: the second normally open contact of the starting relay KM1, and the free end of the switching switch is connected to the negative terminal of the power supply through the second normally open contact of the starting relay and the first load.

[0041] The second power supply branch 3 includes: the third normally open contact of the starting relay KM1, and the free end of the switching switch SW1 connected to the negative terminal of the power supply through the third normally open contact of the starting relay KM1 and the first load U1.

[0042] In order to intuitively see the working status of each branch, this utility model also includes: an indicator branch 5 connected in parallel with the power supply branch 1, which is activated according to the start signal.

[0043] The indicator branch 5 includes a start indicator circuit 51 and a stop indicator circuit 52 connected in parallel; both the start indicator circuit 51 and the stop indicator circuit 52 are connected to the power supply.

[0044] The start indication circuit 51 includes: the fourth normally open contact of the start relay KM1, the first indicator light HD1, and the positive terminal VCC of the power supply is connected to ground GND through the fourth normally open contact of the start relay KM1 and the first indicator light HD1; the stop indication circuit 52 includes: the first normally closed contact of the start relay KM1, the second indicator light HD2, and the positive terminal of the power supply is connected to the negative terminal of the power supply through the first normally closed contact of the start relay KM1 and the second indicator light HD2.

[0045] To prevent overcurrent damage to the device, this invention also includes an overcurrent relay KH; the coil of the overcurrent relay KH is connected to the positive terminal VCC of the power supply and ground GND; the positive terminal VCC of the power supply is connected to the common terminal of the switching switch SW1 through the normally closed contact of the overcurrent relay KH. This invention has a maximum output of 5A, while the actual maximum load current for a single car lighting system is approximately 3.5A or less. Therefore, the built-in overcurrent relay is designed to automatically cut off power and stop the device when the output current is ≥3.5A, preventing overload or short circuit of the train's lighting drive power supply due to excessive output current, which could damage the onboard equipment. After disconnection, simply check the wiring and power module status; if no abnormalities are found, press the start button again to resume use.

[0046] like Figure 3 As shown, power supply branch 1, first power supply branch 2, second power supply branch 3, self-locking control branch 4, indicator branch 5, start indicator circuit 51, and stop indicator circuit 52 are all placed inside the explosion-proof outer casing 6. The explosion-proof type is provided with a power socket 7, a first connection terminal 8, and a second connection terminal 9 on the side.

[0047] Specifically, the power supply is an external 110V power supply, which powers the device through power socket 7. Before use, the original equipment wiring is disconnected. The connection point of the first load is connected to the single-sided lighting power supply output interface via the first connection terminal 8, and the connection point of the second load is connected to the whole-vehicle lighting power supply output interface. This enables passenger compartment lighting during power-off operations without affecting the status of other train equipment or causing cross-current between devices, thus ensuring production safety. Furthermore, considering the possibility of the second connection terminal 9 becoming energized when outputting lighting power to a single car, a transparent protective cover is added to the energized metal part of the second connection terminal 9 to ensure safety during operation.

[0048] The present invention will be further explained in conjunction with specific usage processes, as follows:

[0049] Disconnect the existing equipment wiring and connect it to the single-sided lighting circuit via the first connection terminal 8 and to the vehicle lighting circuit via the second connection terminal 9. When the start button SB2 is pressed, the coil of the start relay KM1 is energized, and the three normally open contacts (5 / 9; 6 / 10; 7 / 11; 8 / 12) of the start relay KM1 close. Among them, the normally open contact 7 / 11 acts as a self-locking control, continuously supplying power to the start relay KM1; the normally open contact 8 / 12 closes, and the first indicator light HD1 is energized and illuminated; the normally open contact 5 / 9... The first load U1 (single-sided lighting power supply output interface) provides DC110V power to drive the train lighting power supply module; the switch SW1 is a function selection knob to select the output of the first load U1 (single-sided lighting power supply output interface) and the second load U2 (vehicle lighting power supply output interface). When the CW position is selected, the first load U1 continuously outputs DC110V power, and when the CCW position is selected, the second load U2 continuously outputs DC110V power, thereby driving the train lighting power supply.

[0050] When the off button SB1 is pressed, the coil of the start relay KM1 is de-energized, all normally open contacts open, and the load stops outputting; the normally closed contacts (4 / 12) of the start relay KM1 close, and the second indicator HD2 is energized and illuminated.

[0051] The overcurrent relay KH serves as overcurrent protection for the circuit. When the current is too high, it disconnects the DC110V power supply from the first load U1 (single-sided lighting power supply output interface) and the second load U2 (vehicle lighting power supply output interface).

[0052] After use, the user should reinstall the disconnected wiring according to the original vehicle wiring position. If the wiring is not connected or there are other abnormalities, the wiring restoration can still be verified through functional testing during static debugging.

[0053] This invention provides power to passenger compartment lighting during power-free operations during major overhauls of train frames, improving work quality and efficiency. It is also easy to connect, has a safe circuit design, meets the lighting needs during operations, ensures the reliability of subsequent equipment, and guarantees the quality of major overhaul operations.

[0054] After the passenger compartment lighting power supply device of this utility model is put into use, operations can be carried out during periods of no electricity, avoiding conflicts and overlaps with other operations. It is estimated that only 6 people are needed for the operation, saving 39 hours of labor per train, with an estimated labor cost of approximately 4,485 yuan per train. The labor cost saved per train is 2,990 yuan. Based on 16 trains per year, a total of 416 hours of labor can be saved, resulting in a labor cost saving of 47,840 years.

[0055] 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 power supply device for passenger compartment lighting during subway train de-energization operations, characterized in that, include: Power supply branch, first power supply branch, second power supply branch, switch, monitoring instruments; The power supply is connected to the power supply branch; The power supply branch, the first power supply branch, and the second power supply branch are connected in parallel; The power supply is connected to the common terminal of the switching switch, and the free terminal of the switching switch is connected to the first load through the first power supply branch and to the second load through the second power supply branch. The monitoring instrument is connected to the common terminal of the switching switch and the power supply; The power supply branch is activated according to the start signal, and the first power supply branch and the second power supply branch are connected to the first load and the second load respectively according to the activation of the power supply branch.

2. The passenger compartment lighting power supply device according to claim 1, characterized in that, The power supply branch includes: a start button, a stop button, and a start relay; The positive terminal of the power supply is connected to the negative terminal of the power supply through the coil of the off button, the start button, and the start relay.

3. The passenger compartment lighting power supply device according to claim 2, characterized in that, Also includes: A self-locking control branch connected in parallel on both sides of the start button.

4. The passenger compartment lighting power supply device according to claim 3, characterized in that, The self-locking control branch includes: the first normally open contact of the start relay; the first normally open contact is connected in parallel with the start button.

5. The passenger compartment lighting power supply device according to claim 2, characterized in that, The first power supply branch includes: the second normally open contact of the starting relay, and the free end of the switching switch is connected to the negative terminal of the power supply through the second normally open contact of the starting relay and the first load.

6. The passenger compartment lighting power supply device according to claim 2, characterized in that, The second power supply branch includes: the third normally open contact of the starting relay, and the free end of the switching switch is connected to the negative terminal of the power supply through the third normally open contact of the starting relay and the first load.

7. The passenger compartment lighting power supply device according to claim 2, characterized in that, Also includes: An indicator branch connected in parallel with the power supply branch is activated according to the start signal.

8. The passenger compartment lighting power supply device according to claim 7, characterized in that, The indicator branch includes a start indicator circuit and a stop indicator circuit connected in parallel; both the start indicator circuit and the stop indicator circuit are connected to a power source.

9. The passenger compartment lighting power supply device according to claim 8, characterized in that, The start-up indicator circuit includes: the fourth normally open contact of the start-up relay and the first indicator light; the positive terminal of the power supply is connected to the negative terminal of the power supply through the fourth normally open contact of the start-up relay and the first indicator light. The shutdown indication circuit includes: a first normally closed contact of the start relay and a second indicator light. The positive terminal of the power supply is connected to the negative terminal of the power supply through the first normally closed contact of the start relay and the second indicator light.

10. The passenger compartment lighting power supply device according to claim 1, characterized in that, Also includes: Overcurrent relay; The coil of the overcurrent relay is connected to the positive and negative terminals of the power supply. The positive terminal of the power supply is connected to the common terminal of the switching switch through the normally closed contact of the overcurrent relay.

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