Automatic steering LED headlamp of railway locomotive

Abstract

The invention relates to the technical field of railway locomotive lighting, in particular to an automatic steering LED headlamp for a railway locomotive, and can solve the problem that a curve view blind area is caused by fixed installation of an existing headlamp to a certain extent. According to the headlamp, a rotating platform and a stepping motor are additionally arranged at the bottom of the LED headlamp, a control device collects the line turning radius and speed information of a train LKJ device in real time, a steering control instruction is generated through an intelligent algorithm, a motor driver receives the instruction and drives the stepping motor to drive the rotating platform to rotate, and the headlamp is driven to conduct steering adjustment of 0-360 degrees. The system is provided with a zero reset function, the initial irradiation angle is automatically recovered after turning is finished, the view blind area of the curve can be effectively eliminated, the driving safety is improved, meanwhile, the installation and debugging difficulty is reduced, and the system is suitable for the complex mountain railway working condition.

Description

Technical Field

[0001] This application relates to the technical field of railway locomotive lighting, and in particular, to an automatically steering LED headlight for railway locomotives. Background Art

[0002] As the core equipment of railway transportation, the operating state of railway locomotives directly affects the efficiency and safety of the entire railway transportation system. During the operation of railway locomotives, lighting equipment plays a crucial role. Currently, the main existing external lighting equipment on locomotives is the headlight, which can provide necessary light sources at night or in insufficient light conditions to ensure the safe operation of railway locomotives.

[0003] The existing headlight is fixedly installed in the locomotive lamp compartment. Once the installation on the vehicle is completed, its irradiation angle is fixed and cannot be adjusted during the operation of the locomotive. This results in that during the turning process of the locomotive, due to the inability of the headlight to follow and turn, the light source cannot always effectively irradiate on the railway track. When the environmental visibility is poor, especially at night, it will form a blind spot in the field of vision, affecting the driver's lookout and observation, and there are potential safety hazards. Summary of the Invention

[0004] To solve the problem of the blind spot in the field of vision at bends caused by the fixed installation of the existing headlight, this application provides an automatically steering LED headlight for railway locomotives.

[0005] The embodiments of this application are implemented as follows:

[0006] In a first aspect, this application provides an automatically steering LED headlight for railway locomotives, including: an LED headlight, a motor driver, a bottom plate, a rotating platform, and a stepper motor;

[0007] The rotating platform is fixedly installed at the bottom of the LED headlight and realizes a rotational movement of 0 - 360° through the drive of the stepper motor;

[0008] The motor driver is connected to the control device through the RS - 485 communication protocol, and the control device obtains the line turning radius and train speed information in the train LKJ device in real time;

[0009] Based on the line turning radius and train speed information, the control device calculates the turning direction, turning angle, and turning timing of the headlight through an internal algorithm, generates a steering control instruction, and the motor driver receives the control instruction issued by the control device and drives the stepper motor to drive the rotating platform to rotate;

[0010] The rotating platform has a reduction ratio of 100:1, a starting and stopping peak torque of 60 N·m, an instantaneous allowable maximum torque of 98 N·m, and its center of gravity axis coincides with the center of gravity axis of the LED headlight to ensure rotational stability;

[0011] The system is provided with a zero position reset function, which automatically controls the rotating platform to return to the initial irradiation angle of 0° after the turn ends.

[0012] The bottom plate is provided with standardized mounting holes that perfectly match the original lamp mounting positions of the locomotive, for quick fixation to the locomotive lamp compartment.

[0013] In a possible implementation, the working life of the rotating platform is ≥20,000 hours, and it can be repeatedly steered and adjusted within the range of ±20°, adapting to the frequent curve conditions of mountain railways.

[0014] In a possible implementation, the stepper motor is a 24V DC motor, vertically installed at the bottom of the rotating platform, and its output shaft is rigidly connected to the drive shaft of the rotating platform through a coupling to avoid transmission clearance.

[0015] In a possible implementation, the motor driver integrates a bus control function, supports real-time data interaction with the LKJ device, and has a built-in redundant protection circuit to prevent misoperation caused by signal interruption.

[0016] In a possible implementation, the system is configured with a manual adjustment switch, and the driver can manually input a steering angle command through this switch to achieve manual intervention adjustment when the automatic control fails.

[0017] In a possible implementation, the rotating platform maintains the current angle through a self-locking mechanism with a reduction ratio of 100:1 in the power-off state, and the offset is <0.5°.

[0018] In a possible implementation, the model of the rotating platform is CE-RP-M20-100-KT0130, its size adapts to the internal space of the locomotive lamp compartment, and its surface is treated with an anti-corrosion coating to adapt to the high humidity environment.

[0019] In a possible implementation, the calculation method of the steering control instruction includes: dynamically adjusting the rotation angle through a trigonometric function model according to the real-time speed of the locomotive and the curve radius to ensure that the center of the light spot is always aligned with the center line of the railway track.

[0020] In a possible implementation, the bottom plate is made of aluminum alloy, with a thickness of 10mm, having both lightweight and high-strength characteristics, and the mounting hole positions conform to the standards.

[0021] In a possible implementation, the coverage deviation rate of the irradiation light spot of the LED headlamp under the drive of the rotating platform is ≤3%, and the luminous intensity is ≥100,000 cd.

[0022] The technical solution provided by this application can at least achieve the following beneficial effects:

[0023] An automatic-steering LED headlight for railway locomotives provided by the present application collects in real time the radius of curvature of the line and the locomotive speed information in the train LKJ device, ensuring that the illumination angle of the light is adapted to the line in real time after the locomotive enters a curve, solving the problem that the light deviates from the railway track during the turning process of the existing locomotive, improving the driving safety of the train, and being particularly applicable to mountainous sections with complex working conditions.

[0024] Moreover, when the lamp is installed on the vehicle, the angular position no longer needs to be manually adjusted with adjusting bolts. After the lamp is fixed, it only needs to be adjusted directly with a rotating platform, and the adjusted position is set as the "zero position". This reduces the installation difficulty of the lamp, saves the commissioning time, and improves the vehicle loading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 FIG. 1 is a schematic diagram of the overall structure of an automatic-steering LED headlight for railway locomotives shown in an exemplary embodiment of the present application;

[0027] Figure 2 FIG. 2 is a schematic diagram of the rear view structure of an automatic-steering LED headlight for railway locomotives shown in an exemplary embodiment of the present application;

[0028] Figure 3 FIG. 3 is a schematic diagram of the side view structure of an automatic-steering LED headlight for railway locomotives shown in an exemplary embodiment of the present application.

[0029] 1. LED headlight; 2. Motor driver; 3. Base plate; 4. Rotating platform; 5. Stepper motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In order to make the purpose, implementation mode and advantages of the present application clearer, the following will clearly and completely describe the exemplary embodiments of the present application with reference to the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only a part of the embodiments of the present application, rather than all the embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0031] It should be noted that the brief description of terms in this application is only for facilitating the understanding of the following-described embodiments, rather than intending to limit the embodiments of this application. Unless otherwise specified, these terms should be understood in their ordinary and common meanings.

[0032] In this application, terms such as "first", "second", "third", etc. in the specification, claims and the above-mentioned drawings are used to distinguish similar or like objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that such terms can be interchanged under appropriate circumstances.

[0033] The terms "comprising" and "having" and any variations thereof are intended to cover but not exclude inclusion. For example, a product or device comprising a series of components does not necessarily have to be limited to all the components clearly listed, but may include other components not clearly listed or inherent to these products or devices.

[0034] Before explaining the automatic steering LED headlight for railway locomotives provided in the embodiments of this application, the application scenarios and implementation environments of the embodiments of this application will be introduced first.

[0035] As the core equipment of railway transportation, the operating state of railway locomotives directly affects the efficiency and safety of the entire railway transportation system. During the operation of railway locomotives, lighting equipment plays a crucial role. At present, the main existing external lighting equipment on locomotives is the headlight, which can provide necessary light sources at night or in low-light conditions to ensure the safe operation of railway locomotives.

[0036] The existing headlight is fixedly installed in the locomotive lamp compartment. Once the installation on the vehicle is completed, its irradiation angle is fixed and cannot be adjusted during the operation of the locomotive. This results in that during the turning process of the locomotive, due to the inability of the headlight to follow and turn, the light source cannot always effectively irradiate on the railway track. When the environmental visibility is poor, especially at night, it will form a visual blind area, affecting the driver's lookout and observation, and there are potential safety hazards.

[0037] Based on this, the present application provides an automatically steerable LED headlight for railway locomotives. A rotating platform and a stepper motor are installed at the bottom of the LED headlight. The control device collects the line turning radius and speed information of the train's LKJ device in real time, generates a steering control command through an intelligent algorithm. The motor driver receives the control command issued by the control device and drives the stepper motor to drive the rotating platform to rotate, driving the headlight to perform a 0-360° steering adjustment, so that the light spot can track the track direction in real time. The rotating platform is designed with a reduction ratio of 100:1, and has a starting and stopping peak torque of 60 N·m and an instantaneous maximum torque of 98 N·m, and is matched with a standardized installation base plate to achieve rapid loading on the vehicle. The system is provided with a zero position reset function, and automatically restores the initial irradiation angle after the turning is completed. The present invention effectively eliminates the visual blind area of the curve, improves the driving safety, and at the same time reduces the difficulty of installation and debugging, and is applicable to the railway working conditions in complex mountainous areas.

[0038] Next, the technical solution of the present application, and how the technical solution of the present application solves the above technical problems will be specifically described through embodiments in conjunction with the drawings. The embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments.

[0039] Figure 1 FIG. is a schematic diagram of the overall structure of an automatically steerable LED headlight for railway locomotives shown in an exemplary embodiment of the present application. Figure 2 FIG. is a schematic rear view structure of an automatically steerable LED headlight for railway locomotives shown in an exemplary embodiment of the present application. Figure 3 FIG. is a schematic side view structure of an automatically steerable LED headlight for railway locomotives shown in an exemplary embodiment of the present application.

[0040] In an exemplary embodiment, as Figure 1 、 Figure 2 and Figure 3 shown, an automatically steerable LED headlight for railway locomotives is provided. In this embodiment, the device may include: an LED headlight, a motor driver, a base plate, a rotating platform and a stepper motor;

[0041] The rotating platform is fixedly installed at the bottom of the LED headlight and realizes a 0-360° rotational movement through the drive of the stepper motor;

[0042] The motor driver is connected to the control device through the RS-485 communication protocol, and the control device obtains the line turning radius and train speed information in the train's LKJ device in real time;

[0043] Based on the line turning radius and train speed information, the control device calculates the turning direction, turning angle, and turning timing of the headlight through an internal algorithm, generates a steering control instruction, and the motor driver receives the control instruction issued by the control device and drives the stepping motor to drive the rotating platform to rotate;

[0044] The rotating platform has a reduction ratio of 100:1, a starting and stopping peak torque of 60 N·m, an instantaneous allowable maximum torque of 98 N·m, and its center of gravity axis coincides with the center of gravity axis of the LED headlight to ensure rotational stability;

[0045] The system is provided with a zero position reset function, which automatically controls the rotating platform to return to the initial 0° irradiation angle after the turn ends;

[0046] The bottom plate is provided with standardized mounting holes that exactly match the original lamp mounting positions of the locomotive, for quick fixing to the locomotive lamp compartment.

[0047] In a possible implementation, as Figure 1 shown, the structure of the headlight is as follows:

[0048] A rotating platform 4 is installed under the mounting plate of the locomotive LED headlight 1. The center of gravity of the rotating platform is on the same axis as the center of gravity of the lamp to keep the lamp stable; a stepping motor 5 is mounted on the rotating platform, and the motor is vertically installed, which not only saves space but also ensures no interference with other moving parts; a motor driver 2 is installed on the lamp mounting plate to supply power to the motor and convey the rotation instruction; the above structure is uniformly fixed on the bottom plate 3, and there are mounting holes on both sides of the bottom plate for vehicle installation.

[0049] The LED headlight is installed in the locomotive lamp compartment. Before the lamp is powered on, the 100:1 reduction ratio of the rotating platform and the motor can ensure that it will not rotate freely. After power-on, the motor locks the rotating platform. After debugging is completed, the position of the lamp is set to "zero position", and all subsequent rotation angles are based on this.

[0050] During the operation of the locomotive, the control device collects information such as the locomotive speed and turning radius from the LKJ device. Before entering a curve, it converts the information into the rotation information (rotation angle and rotation timing) of the lamp through an internal algorithm and sends it to the motor driver. The motor driver drives the stepping motor to start driving the rotating platform to rotate. After the locomotive enters the curve, the headlight maintains the rotation angle until the turn ends. After the turn ends, the control device sends a return-to-zero signal, and the lamp turns back to the zero position.

[0051] In a possible implementation, the specific technical means are as follows:

[0052] Rotating Platform: According to the structure and size characteristics of the headlamp, a rotating platform is installed at its bottom. The starting and stopping peak torque of the rotating platform is 60 N·m, and the instantaneous allowable maximum torque is 98 N·m. The reduction ratio with the motor is 100:1, which can accurately and smoothly carry the lamp for 0 to 360-degree rotation.

[0053] Stepper Motor: A 24V stepper motor is selected, and the motor drives the rotating platform to rotate.

[0054] Motor Driver: A high-performance bus-controlled stepper motor driver is selected, which integrates the functions of an intelligent motion controller. It uses an RS-485 communication port. Its control device real-time collects the line information in the train LKJ device (mainly the turning radius and train speed information), calculates the required turning direction, turning angle, and turning timing of the headlamp through internal algorithms, generates a steering control command. The motor driver drives the stepper motor to start driving the rotating platform to rotate according to the steering control command. After the turn is completed, the control device sends a homing signal, and the lamp turns back to the zero position to achieve the zero-position reset function (the default initial state angle is 0 degrees).

[0055] Among them, the model of the rotating platform: CE-RP-M20-100-KT0130, reduction ratio 100:1, starting and stopping peak torque 60 Nm, instantaneous allowable maximum torque 98 Nm, working life ≥ 20000 h, working angle range ±20°.

[0056] Working Process:

[0057] A rotating mechanism (including: rotating platform, stepper motor, motor driver) is installed at the bottom of the locomotive LED headlamp. When the locomotive enters a curve, the motor driver receives the rotation command from the control device, and then sends a command to the stepper motor. After receiving the command, the stepper motor drives the rotating platform to rotate, thereby driving the lamp to turn, ensuring that the light source always shines on the railway track. After the turn is completed, the rotating mechanism executes the straightening command and continues to maintain straight irradiation.

[0058] Some embodiments of this application can have a wide range of applications in application fields such as railway transportation, lighting engineering, and mechanical automation control.

[0059] In the field of railway transportation, this technical solution can effectively improve the operation safety and efficiency of locomotives. By accurately calculating the turning angle of the lamp, ensuring that the light source always shines on the railway track, it can avoid safety hazards caused by insufficient light, and at the same time reduce the time waste caused by manually adjusting the lamp, improving transportation efficiency. In addition, due to the simple structure and low maintenance cost of the lamp turning device in this technical solution, the operating cost of railway transportation enterprises can be reduced.

[0060] In the field of lighting engineering, this technical solution can provide an efficient and precise way to control lamps. By using an electronic control system to achieve the rotation of the lamps, not only can the rotation accuracy be improved, but also the lamps can be automatically adjusted according to different environmental conditions and requirements, thus enhancing the lighting effect. In addition, since the lamp rotation device of this technical solution is not affected by the environment, it can work stably in various complex lighting environments, improving the reliability and practicality of lighting engineering.

[0061] In the field of mechanical automation control, this technical solution can provide a new way of automation control. By using an electronic control system to achieve the rotation of the lamps, the automation control of the lamps can be realized, reducing manual intervention and improving production efficiency. In addition, since the lamp rotation device of this technical solution has a simple structure and low maintenance cost, the operation cost of the mechanical automation control system can be reduced.

[0062] Generally speaking, this technical solution has broad application prospects in fields such as railway transportation, lighting engineering, and mechanical automation control. The market demand is huge, and it is expected to play an important role in future development.

[0063] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0064] The above-described embodiments only represent several implementation manners of this application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this application patent should be subject to the appended claims.

Claims

1. An automatic steering LED headlight for railway locomotives, characterized in that, Including: LED headlight, motor driver, base plate, rotating platform and stepper motor; The rotating platform is fixedly installed at the bottom of the LED headlight and realizes 0-360° rotational movement driven by the stepper motor; The motor driver is connected to the control device through the RS-485 communication protocol, and the control device obtains the line turning radius and train speed information in the train LKJ device in real time; Based on the line turning radius and train speed information, the control device calculates the turning direction, turning angle and turning timing of the headlight through an internal algorithm, generates a steering control instruction, and the motor driver receives the control instruction issued by the control device and drives the stepper motor to drive the rotating platform to rotate; The rotating platform has a reduction ratio of 100:1, a starting and stopping peak torque of 60 N·m, an instantaneous allowable maximum torque of 98 N·m, and its center of gravity axis coincides with the center of gravity axis of the LED headlight to ensure rotational stability; The system is provided with a zero position reset function to automatically control the rotating platform to return to the initial 0° irradiation angle after the turn ends; The base plate is provided with standardized mounting holes that are completely matched with the original lamp mounting position of the locomotive for quick fixation to the locomotive lamp cabin.

2. The automatic steering LED headlamp for railway locomotives according to claim 1, characterized in that, The working life of the rotating platform is ≥20,000 hours, and it can be repeatedly steered and adjusted within the range of ±20°, adapting to the frequent curve conditions of mountain railways.

3. The automatic steering LED headlamp for railway locomotives according to claim 1, characterized in that, The stepper motor is a 24V DC motor, vertically installed at the bottom of the rotating platform, and its output shaft is rigidly connected to the drive shaft of the rotating platform through a coupling to avoid transmission clearance.

4. The automatic steering LED headlamp for railway locomotives according to claim 3, wherein, The motor driver integrates a bus control function, supports real-time data interaction with the LKJ device, and is built-in with a redundant protection circuit to prevent misoperation caused by signal interruption.

5. The automatic steering LED headlamp for railway locomotives according to claim 1, wherein The system is configured with a manual adjustment switch, and the driver can manually input a steering angle instruction through this switch when the automatic control fails to achieve manual intervention adjustment.

6. The automatic steering LED headlamp for railway locomotives according to claim 5, characterized in that, The rotating platform maintains the current angle through a self-locking mechanism with a reduction ratio of 100:1 in the power-off state, and the offset is <0.5°.

7. The automatic steering LED headlamp for railway locomotives according to claim 1, characterized in that, The model of the rotating platform is CE-RP-M20-100-KT0130, its size adapts to the internal space of the locomotive lamp cabin, and its surface is treated with an anti-corrosion coating to adapt to the high humidity environment.

8. The automatic steering LED headlamp for railway locomotives according to claim 1, characterized in that, The calculation method of the steering control instruction includes: dynamically adjusting the turning angle through a trigonometric function model according to the real-time speed of the locomotive and the curve radius to ensure that the center of the light spot is always aligned with the center line of the railway track.

9. The automatic steering LED headlight for railway locomotives according to claim 1, wherein The base plate is made of aluminum alloy with a thickness of 10 mm, which has both lightweight and high-strength characteristics, and the mounting hole positions meet the standards.

10. The automatic steering LED headlight for railway locomotives according to claim 1, characterized in that, Under the drive of the rotating platform, the coverage deviation rate of the irradiation light spot of the LED headlight is ≤3%, and the luminous intensity is ≥100,000 cd.

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