Driving lamp control system of large railway maintenance machinery

Abstract

The utility model discloses a driving lamp control system of a large railway maintenance machine, which can be applied to the technical field of driving lamp control and comprises a headlamp switch, a high beam switch, an HMI module, a PLC module, a first relay, a second relay and a driving lamp module. The headlamp switch is connected with the power supply and the PLC module; the positive end of the first relay is connected with the PLC module, the negative end of the first relay is grounded, one contact is connected with the power supply, and the other contact is connected with one end of the driving lamp module through the second relay; the other end of the driving lamp module is grounded; the high beam switch is connected with the power supply and the second relay; a fixed contact end of the second relay is connected with one contact of the first relay, and a movable contact end of the second relay is connected with a low beam or a high beam of the driving lamp module; and the HMI module is connected with the PLC module. Therefore, the front headlamp and the rear headlamp can be controlled through any group of switches arranged on the front operation table or the rear operation table, so that the switches are simplified, and the operation complexity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle lighting control technology, and in particular to a vehicle lighting control system for large railway maintenance machinery. Background Technology

[0002] Small and simple track maintenance machinery was used as early as the initial stage of railway development. With the growth of railway transportation and the improvement of industrial technology, track maintenance machinery has developed rapidly, and some heavy, efficient and automated large-scale railway track maintenance machinery has emerged.

[0003] Large railway track maintenance machinery is long and complex, often operating at night and requiring bidirectional movement. Therefore, it is equipped with two sets of headlights, one at the front and one at the rear, for illumination. Existing traffic light control systems typically have separate control buttons for the front and rear traffic lights on the front control panel and the rear control panel, respectively. This prevents the operator from controlling the traffic lights on one side of the machinery from the other. Furthermore, each set of traffic lights often includes multiple headlights requiring individual control, resulting in numerous switches and complex operation.

[0004] Therefore, how to reduce the complexity of driving light control operation is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] To address the aforementioned issues, this utility model provides a train lighting control system for large railway maintenance machinery. The front and rear headlights can be controlled by any set of switches located on the front or rear control panel, thereby simplifying the switching process and reducing operational complexity.

[0006] In a first aspect, this utility model embodiment provides a train lighting control system for large railway maintenance machinery, including: headlight switches, high beam switches and HMI modules separately installed on the front and rear operating panels, as well as a PLC module, a first relay, a second relay and a train lighting module;

[0007] One end of the headlight switch is connected to the power supply, and the other end is connected to the positive terminal and signal input terminal of the PLC module.

[0008] The positive terminal of the first relay is connected to the signal output terminal of the PLC module, the negative terminal is grounded, one contact is connected to the power supply, and the other contact is connected to one end of the driving light module through the second relay;

[0009] The other end of the driving light module is grounded;

[0010] One end of the high beam switch is connected to the power supply, and the other end is connected to the positive terminal of the second relay;

[0011] The negative terminal of the second relay is grounded, the fixed contact is connected to one contact of the first relay, and the moving contact is connected to the low beam or high beam of the driving light module.

[0012] The HMI module is connected to the PLC module.

[0013] Optionally, the high beam switch includes: a front high beam switch and a rear high beam switch;

[0014] The front high beam switch and the rear high beam switch are connected in parallel, with one end connected to the power supply and the other end connected to the positive terminal of the second relay.

[0015] Optionally, the second relay includes: a first high beam control relay and a second high beam control relay;

[0016] The first high beam control relay and the second high beam control relay are connected in parallel.

[0017] The positive terminal of the first high beam control relay is connected to the front high beam switch and the rear high beam switch respectively, and the other terminal is grounded;

[0018] The positive terminal of the second high beam control relay is connected to the front high beam switch and the rear high beam switch, respectively, and the other terminal is grounded.

[0019] Optionally, the driving light module includes a front headlight module and a rear headlight module;

[0020] One end of the headlight module is connected to the power supply via the first high beam control relay and the first relay in sequence, and the other end is grounded;

[0021] One end of the rear headlight module is connected to the power supply via the second high beam control relay and the first relay in sequence, while the other end is grounded.

[0022] Optionally, the PLC module includes: a first PLC module corresponding to the front headlight module and a second PLC module corresponding to the rear headlight module; the headlight switch includes: a front headlight switch and a rear headlight switch; the first relay includes a first low beam control relay and a second low beam control relay;

[0023] The headlight switch includes a first switch and a second switch. The first switch is connected to the power supply and the signal input terminal of the first PLC module, and the second switch is connected to the power supply and the positive terminal of the first PLC module.

[0024] The rear headlight switch includes a third switch and a fourth switch. The third switch is connected to the power supply and the positive terminal of the second PLC module; the fourth switch is connected to the power supply and the signal input terminal of the second PLC module.

[0025] The positive terminals of the first PLC module and the second PLC module are connected by a connecting wire;

[0026] The positive terminal of the first low beam control relay is connected to the signal output terminal of the first PLC module, the negative terminal is grounded, one contact is connected to the power supply, and the other contact is connected to the first high beam control relay.

[0027] The positive terminal of the second low beam control relay is connected to the signal output terminal of the second PLC module, the negative terminal is grounded, one contact is connected to the power supply, and the other contact is connected to the second high beam control relay.

[0028] Optionally, the HMI module includes: a front-end HMI module and a rear-end HMI module;

[0029] The front-end HMI module and the rear-end HMI module are connected in parallel and are connected to the first PLC module and the second PLC module.

[0030] Optionally, the headlight module includes: a first headlight, a second headlight, and a third headlight; the first low beam control relay includes a first headlight low beam control relay, a second headlight low beam control relay, and a third headlight low beam control relay.

[0031] The first headlight low beam control relay, the second headlight low beam control relay, and the third headlight low beam control relay are connected in parallel, and their positive terminals are respectively connected to the three output signal terminals of the first PLC module, while their negative terminals are grounded.

[0032] One end of the contact corresponding to the first headlight low beam control relay is connected to the power supply, and the other end is connected to the first headlight through the first high beam control relay; the other end of the first headlight is grounded.

[0033] One end of the contact corresponding to the low beam control relay of the second headlight is connected to the power supply, and the other end is connected to the second headlight through the first high beam control relay; the other end of the second headlight is grounded.

[0034] One end of the contact corresponding to the low beam control relay of the third headlight is connected to the power supply, and the other end is connected to the third headlight through the first high beam control relay; the other end of the third headlight is grounded.

[0035] Optionally, the rear headlight module includes: a first rear headlight, a second rear headlight, and a third rear headlight;

[0036] The second low beam control relay includes a first rear headlight low beam control relay, a second rear headlight low beam control relay, and a third rear headlight low beam control relay;

[0037] The first rear headlight low beam control relay, the second rear headlight low beam control relay, and the third rear headlight low beam control relay are connected in parallel, and their positive terminals are respectively connected to the three output signal terminals of the second PLC module, while their negative terminals are grounded.

[0038] One end of the contact corresponding to the low beam control relay of the first rear headlight is connected to the power supply, and the other end is connected to the first rear headlight through the second high beam control relay; the other end of the first rear headlight is grounded.

[0039] One end of the contact corresponding to the low beam control relay of the second rear headlight is connected to the power supply, and the other end is connected to the second rear headlight through the second high beam control relay; the other end of the second rear headlight is grounded.

[0040] One end of the contact corresponding to the low beam control relay of the third rear headlight is connected to the power supply, and the other end is connected to the third rear headlight through the second high beam control relay; the other end of the third rear headlight is grounded.

[0041] Optionally, when the first relay is not energized, the corresponding contacts of the first relay are disconnected.

[0042] Optionally, when the second relay is not energized, the moving contact of the second relay is connected to the low beam headlight.

[0043] As can be seen from the above technical solutions, compared with the prior art, the embodiments of this utility model have the following advantages:

[0044] This utility model provides a traffic light control system for large railway maintenance machinery, comprising: a headlight switch, a high beam switch, and an HMI module separately installed on the front and rear control panels; a PLC module; a first relay; a second relay; and a traffic light module. One end of the headlight switch is connected to a power source, and the other end is connected to the positive terminal and signal input terminal of the PLC module. The positive terminal of the first relay is connected to the signal output terminal of the PLC module, and the negative terminal is grounded. One contact is connected to the power source, and the other contact is connected to one end of the traffic light module through the second relay. The other end of the traffic light module is grounded. One end of the high beam switch is connected to the power source, and the other end is connected to the positive terminal of the second relay. The negative terminal of the second relay is grounded. The fixed contact is connected to one contact of the first relay, and the moving contact is connected to either the low beam or high beam of the traffic light module. The HMI module is connected to the PLC module. Thus, the front and rear headlights can be controlled by any set of switches on either the front or rear control panel, simplifying the switching and reducing operational complexity. Attached Figure Description

[0045] Figure 1 A schematic diagram of a train lighting control system for a large railway track maintenance machine provided for an embodiment of this utility model;

[0046] Figure 2 A schematic diagram of the connection relationship of a high beam switch provided for an embodiment of this utility model;

[0047] Figure 3 A schematic diagram of the connection relationship of a second relay provided for an embodiment of this utility model;

[0048] Figure 4 A schematic diagram of the connection relationship of a driving light module provided in an embodiment of this utility model;

[0049] Figure 5 A schematic diagram of a system for independent control of a vehicle lighting module provided for an embodiment of this utility model;

[0050] Figure 6 A schematic diagram of the structure of a control device provided in an embodiment of this utility model;

[0051] Figure 7 A schematic diagram of the connection relationship of an HMI module provided for an embodiment of this utility model;

[0052] Figure 8 A schematic diagram of the connection relationship of a headlight module provided in an embodiment of this utility model;

[0053] Figure 9 This is a schematic diagram illustrating the connection relationship of a rear headlight module provided in an embodiment of this utility model. Detailed Implementation

[0054] As mentioned earlier, existing train lighting control systems suffer from operational complexity. Specifically, with the growth of railway transportation and the improvement of industrial technology, an increasing number of large-scale railway maintenance machines are being used. Due to the long size and complex functions of these machines, their frequent nighttime operation, and the need for bidirectional movement, they are equipped with two sets of headlights for illumination. Existing train lighting control systems typically have separate control buttons for the front and rear lights on the front control panel and the rear control panel, respectively. Drivers must walk to the other side of the machine to control the lights on the other side. Furthermore, each set of lights often includes multiple headlights requiring individual control, resulting in numerous switches and complex operation.

[0055] To address the aforementioned problems, this utility model provides a traffic light control system for large railway maintenance machinery, comprising: headlight switches, high beam switches, and HMI modules separately installed on the front and rear control panels, as well as a PLC module, a first relay, a second relay, and a traffic light module; one end of the headlight switch is connected to a power source, and the other end is connected to the positive terminal and signal input terminal of the PLC module; the positive terminal of the first relay is connected to the signal output terminal of the PLC module, the negative terminal is grounded, one contact is connected to a power source, and the other contact is connected to one end of the traffic light module through the second relay; the other end of the traffic light module is grounded; one end of the high beam switch is connected to a power source, and the other end is connected to the positive terminal of the second relay; the negative terminal of the second relay is grounded, the fixed contact is connected to one contact of the first relay, and the moving contact is connected to the low beam or high beam of the traffic light module; the HMI module is connected to the PLC module. Thus, the front and rear headlights can be controlled by any set of switches installed on either the front or rear control panel, thereby simplifying the switching and reducing operational complexity.

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0057] Figure 1 This is a schematic diagram of a train lighting control system for a large railway track maintenance machine, provided as an embodiment of the present utility model. (Combined with...) Figure 1As shown, the present invention provides a vehicle lighting control system 100, which includes: a headlight switch S1, a high beam switch S2 and an HMI module 110 separately installed on the front and rear control panels, as well as a PLC module 120, a first relay K1, a second relay K2 and a vehicle lighting module 130.

[0058] One end of the headlight switch S1 is connected to the power supply, and the other end is connected to the positive terminal and signal input terminal of the PLC module 120.

[0059] The positive terminal of the first relay K1 is connected to the signal output terminal of the PLC module 120, the negative terminal is grounded, one contact is connected to the power supply, and the other contact is connected to one end of the driving light module 130 through the second relay K2.

[0060] The other end of the driving light module 130 is grounded;

[0061] One end of the high beam switch S2 is connected to the power supply, and the other end is connected to the positive terminal of the second relay K2;

[0062] The negative terminal of the second relay K2 is grounded, the fixed contact is connected to one contact of the first relay K1, and the moving contact is connected to the low beam or high beam of the driving light module 130.

[0063] The HMI module 110 is connected to the PLC module 120.

[0064] In this embodiment of the invention, the normally closed headlight switch S1 is separately installed on the front and rear operating platforms of the large road maintenance machinery. One end of the switch is connected to the power supply, and the other end is connected to the positive terminal and signal input terminal (digital input point) D of the PLC module 120. When the headlight switch S1 is closed, contacts 1 and 1' and 2 and 2' close, the PLC module 120 is energized, and the digital input point receives the signal, outputting a high level at the signal output terminal DO. At this time, the positive terminal is connected to the output terminal of the PLC module 120, and the first relay K1, which is grounded, is energized, and the corresponding normally closed contacts 4 and 4' close. The driving light module 130 includes a front headlight module and a rear headlight module for the large road maintenance machinery, and each module is equipped with a low beam headlight and a high beam headlight. The positive terminal of the second relay K2 is connected to the normally open high beam switch S2, and the negative terminal is grounded. The corresponding fixed contact is connected to contact 4 of the first relay K1, and the moving contact is connected to the daytime running light module 130. The moving contact (contact 51) is normally connected to the low beam in the daytime running light module 130 when the second relay K2 is not energized. Understandably, when the headlight switch S1 is closed, the first relay K1 is energized, contacts 4 and 4' close, and one end of the low beam in the daytime running light module 130 is connected to the power supply through contacts 51, 50, 4, and 4', while the other end is grounded, thus energizing and illuminating the light. When large road maintenance machinery needs to turn on the high beam, the high beam switch S2 is closed, contacts 3 and 3' close, the second relay K2 is energized, contacts 50 and 51 open, and contacts 50 and 52 close, energizing the high beam in the daytime running light module 130, thus illuminating the light. HMI module 110 is connected to PLC module 120 and can control whether the signal output terminal of PLC module 120 outputs a high level, thereby controlling whether the first relay K1 is energized. When the first relay K1 is not energized, contacts 4 and 4' are open, controlling the power off of the driving light module 130, and the driving lights cannot light up. In addition, for convenient operation, headlight switch S1 and high beam switch S2 can be connected to the same knob. The knob is set to 0, 1, and 2. When the knob is turned to 0, both headlight switch S1 and high beam switch S2 are open, and no headlights are energized. When the knob is turned to 1, headlight switch S1 is closed, high beam switch S2 is open, and low beam lights are energized. When the knob is turned to 2, both headlight switch S1 and high beam switch S2 are closed, and high beam lights are energized.

[0065] As one implementation method, the high beam switch S2 is configured as follows: The high beam switch S2 includes a front high beam switch S21 and a rear high beam switch S22.

[0066] The front high beam switch S21 and the rear high beam switch S22 are connected in parallel, with one end connected to the power supply and the other end connected to the positive terminal of the second relay K2.

[0067] Figure 2This is a schematic diagram illustrating the connection relationship of a high beam switch according to an embodiment of the present utility model. Figure 2 As shown in this utility model, to ensure that both the front and rear control panels of large railway maintenance machinery can control the power supply of the high beams, a front high beam switch S21 and a rear high beam switch S22 are provided. The front high beam switch S21 is located on the front control panel, and the rear high beam switch S22 is located on the rear control panel. They are connected in parallel, with one end connected to a power source and the other end connected to the positive terminal of the second relay K2. When the knob on the front control panel is adjusted to position 2, the front high beam switch S21 closes, contacts 3 and 3' close, the second relay K2 is energized, contacts 50 and 52 close, and the high beams are powered on and illuminate. When the knob on the rear control panel is adjusted to position 2, S22 closes, contacts 33 and 33' close, the second relay K2 is energized, contacts 50 and 52 close, and the high beams are also powered on and illuminate.

[0068] As one implementation method, regarding how to configure the second relay K2, the second relay K2 includes: a first high beam control relay K21 and a second high beam control relay K22;

[0069] The first high beam control relay K21 and the second high beam control relay K22 are connected in parallel.

[0070] The positive terminal of the first high beam control relay K21 is connected to the front high beam switch S21 and the rear high beam switch S22 respectively, and the other terminal is grounded;

[0071] The positive terminal of the second high beam control relay K22 is connected to the front high beam switch S21 and the rear high beam switch S22 respectively, and the other terminal is grounded.

[0072] Figure 3 This is a schematic diagram illustrating the connection relationship of a second relay according to an embodiment of the present utility model. Figure 3As shown, in this utility model, in conjunction with the above, the driving light module 130 includes a front headlight module and a rear headlight module. To achieve separate control of the two modules, this utility model embodiment splits the second relay K2 into a first high beam control relay K21 and a second high beam control relay K22. Specifically, the first high beam control relay K21 controls the high and low beams of the front headlight module, with its positive terminal connected to the front high beam switch S21 and the other end grounded; the second high beam control relay K22 controls the high and low beams of the rear headlight module, with its positive terminal connected to the rear high beam switch S22 and the other end grounded. Furthermore, to ensure that the rear headlight module can be controlled at the front end and the front headlight module can be controlled at the rear end, this utility model embodiment connects the first high beam control relay K21 and the second high beam control relay K22 in parallel via a connecting wire, so that the positive terminal of the first high beam control relay K21 is simultaneously connected to the rear high beam switch S22, and the positive terminal of the second high beam control relay K22 is simultaneously connected to the front high beam switch S21.

[0073] As a real-time method, this pertains to how the driving light module 130 is configured. Accordingly, the driving light module 130 includes a front headlight module 131 and a rear headlight module 132;

[0074] One end of the headlight module 131 is connected to the power supply via the first high beam control relay K21 and the first relay K1 in sequence, and the other end is grounded;

[0075] One end of the rear headlight module 132 is connected to the power supply via the second high beam control relay K22 and the first relay K1 in sequence, and the other end is grounded.

[0076] Figure 4 This is a schematic diagram illustrating the connection relationship of a driving light module provided in an embodiment of the present utility model. (Combined with...) Figure 4 As shown, in this invention, the positive terminal of the front headlight module 131 is connected to the power supply sequentially through the first high beam control relay K21 and the first relay K1, while the negative terminal is grounded. The rear headlight module 132 is connected to the power supply sequentially through the second high beam control relay K22 and the first relay K1, with the negative terminal grounded. Thus, when the headlight switch S1 is closed, the first relay K1 is energized, contacts 4 and 4' close, contacts 50.1 and 51.1 close, and contacts 50.2 and 51.2 close, energizing the low beam lamps in both the front headlight module 131 and the rear headlight module 132. At this time, if the high beam switch S2, which is separately set on the front or rear control panel, is closed (S21 is closed, contacts 3 and 3' are closed; or S22 is closed, contacts 33 and 33' are closed), then contacts 50.1 and 51.1 are open, contacts 50.2 and 51.2 are open, contacts 50.1 and 52.1 are closed, and contacts 50.2 and 52.2 are closed, and the high beams in the front headlight module 131 and the rear headlight module 132 are powered.

[0077] As one implementation method, this addresses how to achieve individual control of the front headlight module 131 or the rear headlight module 132. Accordingly, the PLC module 120 includes: a first PLC module P1 corresponding to the front headlight module 131 and a second PLC module P2 corresponding to the rear headlight module 132; the headlight switch S1 includes: a front headlight switch S11 and a rear headlight switch S12; the first relay K1 includes a first low beam control relay K11 and a second low beam control relay K12;

[0078] The headlight switch S11 includes a first switch and a second switch. The first switch is connected to the power supply and the signal input terminal of the first PLC module P1, and the second switch is connected to the power supply and the positive terminal of the first PLC module P1.

[0079] The rear headlight switch S12 includes a third switch and a fourth switch. The third switch is connected to the power supply and the positive terminal of the second PLC module P2; the fourth switch is connected to the power supply and the signal input terminal of the second PLC module P2.

[0080] The positive terminal of the first PLC module P1 and the positive terminal of the second PLC module P2 are connected by a connecting wire;

[0081] The positive terminal of the first low beam control relay K11 is connected to the signal output terminal of the first PLC module P1, the negative terminal is grounded, one contact is connected to the power supply, and the other contact is connected to the first high beam control relay K21.

[0082] The positive terminal of the second low beam control relay K12 is connected to the signal output terminal of the second PLC module P2, the negative terminal is grounded, one contact is connected to the power supply, and the other contact is connected to the second high beam control relay K22.

[0083] Figure 5 This is a schematic diagram of a system for independently controlling a vehicle lighting module, provided as an embodiment of the present invention. (Combined with...) Figure 5As shown, in this utility model, in order to independently control the front headlight module 131 and the rear headlight module 132, the PLC module 120 is designed with a first PLC module P1 corresponding to the front headlight module 131 and a second PLC module P2 corresponding to the rear headlight module 132. The first relay K1 is provided with a first low beam control relay K11 corresponding to the front headlight module 131 and a second low beam control relay K12 corresponding to the rear headlight module 132. The headlight switch S11 includes a normally open first switch (corresponding to contacts 11 and 11') and a second switch (corresponding to contacts 21 and 21'). The first switch is connected to the power supply and the signal input terminal of the first PLC module P11, and the second switch is connected to the positive terminal of the power supply of the first PLC module P11. The rear headlight switch S12 includes a normally open third switch (corresponding to contacts 12 and 12') and a fourth switch (corresponding to contacts 22 and 22'). The third switch connects the power supply to the positive terminal of the second PLC module P2, and the fourth switch connects the power supply to the signal input terminal of the second PLC module P2. Furthermore, in order to simultaneously control the front headlight module 131 and the rear headlight module 132 when only the front headlight switch S11 or the rear headlight switch S12 is turned on, this invention connects the positive terminals of the first PLC module P1 and the second PLC module P2 via a connecting wire. Figure 6 This is a schematic diagram of a control device provided in an embodiment of the present utility model. (In conjunction with...) Figure 6As shown, it can be installed simultaneously on the front and rear control panels. The HMI module works in conjunction with a knob (headlight switch) on the panel, including the knob and touch buttons (the top three are for light control in the driver's direction, and the bottom three are for light control in the opposite direction). This allows simultaneous control of the front and rear headlights. Specifically, the HMI module 110 is connected to the first PLC module P1 and the second PLC module P2. When both PLC modules P1 and P2 are powered, the HMI module 110 can control whether it can output a high level signal from its output signal terminal, thereby controlling whether the first relay K1 is energized. The knob can be set to 0, low beam, and high beam. On the front control panel, 0 corresponds to the front high beam switch S21, rear high beam switch S22, front headlight switch S11, and rear headlight switch S12 all being off; low beam corresponds to front headlight switch S11 being on and the other switches being off; high beam corresponds to front headlight switch S11 and front high beam switch S21 being on and the other switches being off. On the rear control panel, 0 corresponds to the front high beam switch S21, rear high beam switch S22, front headlight switch S11, and rear headlight switch S12 all being off; low beam corresponds to rear headlight switch S12 being on and the other switches being off; high beam corresponds to rear headlight switch S12 and rear high beam switch S22 being on and the other switches being off. On the front control panel, when the knob is turned to the low beam position, the headlight switch S11 closes, contacts 11 and 11' close, and contacts 21 and 21' close. At this time, the first PLC module P1 and the second PLC module P2 are energized, but only the digital input point of the first PLC module P1 receives the signal. Therefore, the signal output terminal of the first PLC module P1 can output a high level, energizing the first low beam control relay K11, whose positive terminal is connected to the grounded negative terminal of the first PLC module P1. The contacts 41 and 41' corresponding to the first low beam control relay K11 close, and the low beam lamp in the headlight module 131 is energized. Under this condition, if the knob is rotated further to the high beam position, the front high beam switch S21 also closes, contacts 3 and 3' close, the first high beam control relay K21 is energized, its corresponding contacts 50.1 and 51.1 open, and contacts 50.1 and 52.1 close, energizing the high beam lamp in the headlight module 131. At this time, the three touch buttons at the top will be highlighted. If you operate the HMI module (click the touch button at the bottom), the output of P2 will output a high level, which will also power K12, thereby realizing the control of the rear headlight module.On the rear control panel, if the knob is turned to the low beam position, the rear headlight switch S12 closes, contacts 12 and 12' close, and contacts 22 and 22' close. At this time, the first PLC module P1 and the second PLC module P2 are energized, but only the digital input point of the second PLC module P2 receives the signal. Therefore, the signal output terminal of the second PLC module P2 can output a high level, energizing the second low beam control relay K12, whose positive terminal is connected to the grounded negative terminal of the second PLC module P2. The corresponding contacts 42 and 42' of the second low beam control relay K12 close, and the low beam lamp in the rear headlight module 132 is energized. Under this condition, if the knob is rotated further to the high beam position, the rear high beam switch S22 also closes, contacts 33 and 33' close, the second high beam control relay K22 is energized, its corresponding contacts 50.2 and 51.2 open, and contacts 50.2 and 52.2 close, and the high beam lamp in the rear headlight module 132 is energized. At this time, the three touch buttons at the top will be highlighted. If you operate the HMI module (click the touch button at the bottom), the output of P1 will output a high level, which will then power K11, thereby controlling the headlight module.

[0084] As one implementation method, the HMI module 110 is designed accordingly. The HMI module 110 includes a front-end HMI module H1 and a rear-end HMI module H2.

[0085] The front-end HMI module H1 and the rear-end HMI module H2 are connected in parallel and are connected to the first PLC module P1 and the second PLC module P2.

[0086] Figure 7 This is a schematic diagram illustrating the connection relationship of an HMI module provided in an embodiment of the present utility model. (In conjunction with...) Figure 7 As shown, in this invention, the HMI module 110 can be simultaneously installed on both the front and rear control panels for convenient driver operation. It can be understood that a front-mounted HMI module H1, capable of simultaneously controlling the first PLC module P1 and the second PLC module P2, is separately installed on the front control panel, and a rear-mounted HMI module H2, also capable of simultaneously controlling the first PLC module P1 and the second PLC module P2, is separately installed on the rear control panel. Thus, through human-machine interaction, with both the first PLC module P1 and the second PLC module P2 energized, the driver can control whether the signal output of either module is at a high level via either the first PLC module P1 or the second PLC module P2, thereby controlling whether the first relay K1 is energized. Specifically, the front-mounted HMI module H1 and the rear-mounted HMI module H2 are connected in parallel and connected to both the first PLC module P1 and the second PLC module P2.

[0087] As one implementation method, the headlight module 131 is configured as follows: The headlight module 131 includes a first headlight L1, a second headlight L2, and a third headlight L3; the first low beam control relay K11 includes a first low beam control relay K11.1, a second low beam control relay K11.2, and a third low beam control relay K11.3.

[0088] The first headlight low beam control relay K11.1, the second headlight low beam control relay K11.2, and the third headlight low beam control relay K11.3 are connected in parallel, and their positive terminals are respectively connected to the three output signal terminals of the first PLC module P1, while their negative terminals are grounded.

[0089] One end of the contact corresponding to the first low beam control relay K11.1 of the headlight is connected to the power supply, and the other end is connected to the first headlight L1 through the first high beam control relay K21; the other end of the first headlight L1 is grounded.

[0090] One end of the contact corresponding to the second headlight low beam control relay K11.2 is connected to the power supply, and the other end is connected to the first headlight L2 through the first high beam control relay K21; the other end of the first headlight L2 is grounded.

[0091] One end of the contact corresponding to the third headlight low beam control relay K11.3 is connected to the power supply, and the other end is connected to the first headlight L3 through the first high beam control relay K21; the other end of the first headlight L3 is grounded.

[0092] Figure 8 This is a schematic diagram illustrating the connection relationship of a headlight module according to an embodiment of the present utility model. Figure 8As shown, in this invention, the forward lighting can adopt a three-lamp design, namely, the headlight module 131 includes: a first headlight L1, a first headlight L2, and a first headlight L3. To allow each headlight to be controlled independently, this invention divides the first low beam control relay K11 into corresponding (positive terminal connected to the signal output terminal of the first PLC module P1, negative terminal grounded) first headlight low beam control relay K11.1, second headlight low beam control relay K11.2, and third headlight low beam control relay K11.3. The first headlight low beam control relay K11.1, second headlight low beam control relay K11.2, and third headlight low beam control relay K11.3 are connected in parallel. Specifically, the first headlight low beam control relay K11.1 corresponds to the first headlight L1. One end of the first headlight L1 is connected to the power supply through the first high beam control relay K21 and the normally closed contacts 411 and 411' corresponding to the first headlight low beam control relay K11.1, while the other end is grounded. The second headlight low beam control relay K11.2 corresponds to the first headlight L2. One end of the first headlight L2 is connected to the power supply through the first high beam control relay K21 and the normally closed contacts 412 and 412' corresponding to the second headlight low beam control relay K11.2, while the other end is grounded. The third headlight low beam control relay K11.3 corresponds to the first headlight L3. One end of the first headlight L3 is connected to the power supply through the first high beam control relay K21 and the normally closed contacts 413 and 413' corresponding to the third headlight low beam control relay K11.3, while the other end is grounded. Thus, when the first PLC module P1 is powered on, the first PLC module P1 can be controlled by the front HMI module H1 or the rear HMI module H2 to output a high level at any signal output terminal, thereby independently controlling whether the first headlight low beam control relay K11.1, the second headlight low beam control relay K11.2, and the third headlight low beam control relay K11.3 are powered on.

[0093] As one implementation method, the design of the rear headlight module 132 is described. Accordingly, the rear headlight module 132 includes: a first rear headlight L4, a second rear headlight L5, and a third rear headlight L6;

[0094] The second low beam control relay K12 includes a first rear headlight low beam control relay K12.1, a second rear headlight low beam control relay K12.2, and a third rear headlight low beam control relay K12.3;

[0095] The first rear headlight low beam control relay K12.1, the second rear headlight low beam control relay K12.2, and the third rear headlight low beam control relay K12.3 are connected in parallel, and their positive terminals are respectively connected to the three output signal terminals of the second PLC module P2, while their negative terminals are grounded.

[0096] One end of the contact corresponding to the first rear headlight low beam control relay K12.1 is connected to the power supply, and the other end is connected to the first rear headlight L4 through the second high beam control relay K22; the other end of the first rear headlight L4 is grounded.

[0097] One end of the contact corresponding to the second rear headlight low beam control relay K12.2 is connected to the power supply, and the other end is connected to the second rear headlight L5 through the second high beam control relay K22; the other end of the second rear headlight L5 is grounded.

[0098] One end of the contact corresponding to the low beam control relay K12.3 of the third rear headlight is connected to the power supply, and the other end is connected to the third rear headlight L6 through the second high beam control relay K22; the other end of the third rear headlight L6 is grounded.

[0099] Figure 9 This is a schematic diagram illustrating the connection relationship of a rear headlight module according to an embodiment of the present utility model. (Combined with...) Figure 9As shown, in this invention, the rear lighting can also adopt a three-lamp design, namely, the rear headlight module 132 includes: a first rear headlight L4, a second rear headlight L5, and a third rear headlight L6. To allow each rear headlight to be controlled independently, this invention divides the second low beam control relay K12 into corresponding (positive terminal connected to the signal output terminal of the second PLC module P2, negative terminal grounded) first rear headlight low beam control relay K12.1, second rear headlight low beam control relay K12.2, and third rear headlight low beam control relay K12.3. The first rear headlight low beam control relay K12.1, second rear headlight low beam control relay K12.2, and third rear headlight low beam control relay K12.3 are connected in parallel. Specifically, the first rear headlight low beam control relay K12.1 corresponds to the first rear headlight L4. One end of the first rear headlight L4 is connected to the power supply through the second high beam control relay K22 and the normally closed contacts 421 and 421' corresponding to the first rear headlight low beam control relay K12.1, while the other end is grounded. The second rear headlight low beam control relay K12.2 corresponds to the second rear headlight L5. One end of the second rear headlight L5 is connected to the power supply through the second high beam control relay K22 and the normally closed contacts 422 and 422' corresponding to the second rear headlight low beam control relay K12.2, while the other end is grounded. The third rear headlight low beam control relay K12.3 corresponds to the third rear headlight L6. One end of the third rear headlight L6 is connected to the power supply through the second high beam control relay K22 and the normally closed contacts 423 and 423' corresponding to the third rear headlight low beam control relay K12.3, while the other end is grounded. Thus, when the second PLC module P2 is powered on, the front HMI module H1 or the rear HMI module H2 can control whether any signal output terminal of the second PLC module P2 outputs a high level, thereby independently controlling whether the first rear headlight low beam control relay K12.1, the second rear headlight low beam control relay K12.2, and the third rear headlight low beam control relay K12.3 are powered on.

[0100] In summary, this utility model embodiment provides a traffic light control system for large railway maintenance machinery, comprising: a headlight switch, a high beam switch, and an HMI module separately installed on the front and rear operating panels, as well as a PLC module, a first relay, a second relay, and a traffic light module; one end of the headlight switch is connected to a power supply, and the other end is connected to the positive terminal and signal input terminal of the PLC module; the positive terminal of the first relay is connected to the signal output terminal of the PLC module, the negative terminal is grounded, one contact is connected to the power supply, and the other contact is connected to one end of the traffic light module through the second relay; the other end of the traffic light module is grounded; one end of the high beam switch is connected to a power supply, and the other end is connected to the positive terminal of the second relay; the negative terminal of the second relay is grounded, the fixed contact is connected to one contact of the first relay, and the moving contact is connected to the low beam or high beam of the traffic light module; the HMI module is connected to the PLC module. Thus, the front and rear headlights can be controlled by any set of switches installed on the front or rear operating panels, thereby simplifying the switching and reducing operational complexity.

[0101] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A train lighting control system for large railway maintenance machinery, characterized in that, The system includes: headlight switches, high beam switches and HMI modules separately installed on the front and rear control panels, as well as a PLC module, a first relay, a second relay and a daytime running light module; One end of the headlight switch is connected to the power supply, and the other end is connected to the positive terminal and signal input terminal of the PLC module. The positive terminal of the first relay is connected to the signal output terminal of the PLC module, the negative terminal is grounded, one contact is connected to the power supply, and the other contact is connected to one end of the driving light module through the second relay; The other end of the driving light module is grounded; One end of the high beam switch is connected to the power supply, and the other end is connected to the positive terminal of the second relay; The negative terminal of the second relay is grounded, the fixed contact is connected to one contact of the first relay, and the moving contact is connected to the low beam or high beam of the driving light module. The HMI module is connected to the PLC module.

2. The train lighting control system for a large railway maintenance machine according to claim 1, characterized in that, The high beam switch includes: a front high beam switch and a rear high beam switch; The front high beam switch and the rear high beam switch are connected in parallel, with one end connected to the power supply and the other end connected to the positive terminal of the second relay.

3. The train lighting control system for a large railway maintenance machine according to claim 2, characterized in that, The second relay includes: a first high beam control relay and a second high beam control relay; The first high beam control relay and the second high beam control relay are connected in parallel. The positive terminal of the first high beam control relay is connected to the front high beam switch and the rear high beam switch respectively, and the other terminal is grounded; The positive terminal of the second high beam control relay is connected to the front high beam switch and the rear high beam switch, respectively, and the other terminal is grounded.

4. The train lighting control system for a large railway maintenance machine according to claim 3, characterized in that, The driving light module includes a front headlight module and a rear headlight module; One end of the headlight module is connected to the power supply via the first high beam control relay and the first relay in sequence, and the other end is grounded; One end of the rear headlight module is connected to the power supply via the second high beam control relay and the first relay in sequence, while the other end is grounded.

5. The train lighting control system for a large railway maintenance machine according to claim 4, characterized in that, The PLC module includes: a first PLC module corresponding to the front headlight module and a second PLC module corresponding to the rear headlight module; the headlight switch includes: a front headlight switch and a rear headlight switch; the first relay includes a first low beam control relay and a second low beam control relay. The headlight switch includes a first switch and a second switch. The first switch is connected to the power supply and the signal input terminal of the first PLC module, and the second switch is connected to the power supply and the positive terminal of the first PLC module. The rear headlight switch includes a third switch and a fourth switch. The third switch is connected to the power supply and the positive terminal of the second PLC module; the fourth switch is connected to the power supply and the signal input terminal of the second PLC module. The positive terminals of the first PLC module and the second PLC module are connected by a connecting wire; The positive terminal of the first low beam control relay is connected to the signal output terminal of the first PLC module, the negative terminal is grounded, one contact is connected to the power supply, and the other contact is connected to the first high beam control relay. The positive terminal of the second low beam control relay is connected to the signal output terminal of the second PLC module, the negative terminal is grounded, one contact is connected to the power supply, and the other contact is connected to the second high beam control relay.

6. The train lighting control system for a large railway maintenance machine according to claim 5, characterized in that, The HMI module includes: a front-end HMI module and a rear-end HMI module; The front-end HMI module and the rear-end HMI module are connected in parallel and are connected to the first PLC module and the second PLC module.

7. The train lighting control system for a large railway maintenance machine according to claim 5, characterized in that, The headlight module includes: a first headlight, a second headlight, and a third headlight; the first low beam control relay includes a first headlight low beam control relay, a second headlight low beam control relay, and a third headlight low beam control relay. The first headlight low beam control relay, the second headlight low beam control relay, and the third headlight low beam control relay are connected in parallel, and their positive terminals are respectively connected to the three output signal terminals of the first PLC module, while their negative terminals are grounded. One end of the contact corresponding to the first headlight low beam control relay is connected to the power supply, and the other end is connected to the first headlight through the first high beam control relay; the other end of the first headlight is grounded. One end of the contact corresponding to the low beam control relay of the second headlight is connected to the power supply, and the other end is connected to the second headlight through the first high beam control relay; the other end of the second headlight is grounded. One end of the contact corresponding to the low beam control relay of the third headlight is connected to the power supply, and the other end is connected to the third headlight through the first high beam control relay; the other end of the third headlight is grounded.

8. The train lighting control system for a large railway maintenance machine according to claim 5, characterized in that, The rear headlight module includes: a first rear headlight, a second rear headlight, and a third rear headlight; The second low beam control relay includes a first rear headlight low beam control relay, a second rear headlight low beam control relay, and a third rear headlight low beam control relay; The first rear headlight low beam control relay, the second rear headlight low beam control relay, and the third rear headlight low beam control relay are connected in parallel, and their positive terminals are respectively connected to the three output signal terminals of the second PLC module, while their negative terminals are grounded. One end of the contact corresponding to the low beam control relay of the first rear headlight is connected to the power supply, and the other end is connected to the first rear headlight through the second high beam control relay; the other end of the first rear headlight is grounded. One end of the contact corresponding to the low beam control relay of the second rear headlight is connected to the power supply, and the other end is connected to the second rear headlight through the second high beam control relay; the other end of the second rear headlight is grounded. One end of the contact corresponding to the low beam control relay of the third rear headlight is connected to the power supply, and the other end is connected to the third rear headlight through the second high beam control relay; the other end of the third rear headlight is grounded.

9. The train lighting control system for a large railway maintenance machine according to claim 1, characterized in that, When the first relay is not energized, the corresponding contact of the first relay is disconnected.

10. The train lighting control system for a large railway maintenance machine according to claim 1, characterized in that, When the second relay is not energized, the moving contact of the second relay is connected to the low beam headlight.

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